Oil injection lubricating device for chain links of transverse zipper tongs in film stretching production line

Abstract

The invention provides an oil injection lubricating device for a transverse zipper clip chain link of a film stretching production line. A pin shaft sleeve matching surface of the chain clip chain link is communicated, an oil injection inlet is formed above the pin shaft sleeve matching surface, and a chain wheel is provided with an oil injection mechanism to inject oil to the oil injection inlet; the oil injection mechanism comprises lubricating oil runners, nozzles, an oil injection pipe, a hydraulic station, an oil injection electromagnetic valve and a lubricating grease conveying pipe, the chain wheel is divided into N fan-shaped oil injection areas along the circumference, and N corresponding lubricating oil runners are arranged in a chain wheel center extension shaft at the top of the chain wheel; the oil outlet end of the hydraulic station is connected to the oil injection electromagnetic valve and connected into the corresponding lubricating oil flow channels, and the nozzles are connected with the corresponding lubricating oil flow channels through oil injection pipes. And a nozzle working position proximity switch and an arc bulge which are matched with each other are arranged to output an oil injection signal to control oil injection. The oil injection lubricating device for the transverse zipper clip chain link of the film stretching production line can accurately and uniformly supply oil to lubricate the chain clip chain link, and has the advantages of being small in mechanical abrasion, stable in oil injection, accurate and energy-saving.

Description

Technical Field

[0001] The invention relates to the technical field of film stretching production equipment, and in particular to an oil spray lubrication device for horizontal zipper chain links of a film stretching production line. Background Art

[0002] Horizontal stretching is a key process section of a biaxially oriented film production line. At the transverse stretching machine of a biaxially oriented film production line, the chain composed of chain clips and chain links is arranged in an orderly manner on a closed-loop annular guide rail with a long center distance. The traction force generated by the driving device drives the high-speed operation. During the process, it is necessary to overcome the stretching and compression between the pin shaft and sleeve of the chain clips and chain links and the sliding friction (sliding chain clips) or rolling friction (rolling chain clips) between the guide rail and the guide rail. In order to reduce the degree of friction, improve equipment reliability, and extend the service life and wear resistance of the chain clips and chain links, when the chain clips and chain links are running on the guide rail, an oil lubrication system must be used to lubricate the pin shaft and sleeve. Otherwise, the wear of the chain clips and chain links and the increase of the motor torque will cause the film to break during horizontal stretching, reduce the yield rate of the produced products, and damage the interests of the enterprise.

[0003] There are some chain clip and chain link lubrication devices in the prior art, such as the existing patent CN212203966U, which discloses an automatic lubrication device and a chain transmission mechanism, including an oil gun, an oil pipe, and an oil supply unit. The oil gun supplies lubricating oil to the oil pipe by automatically squeezing the control handle during the rotation of the sprocket. The lubricating oil is transported to the sprocket through the oil pipe, and the lubricating oil on the sprocket penetrates into the pin shaft and the pin sleeve of the chain transmission mechanism during the transmission process. The device controls the oil supply by the collision and squeezing operation of the sprocket on the control handle, and the mechanical wear is large during the entire operation process. In addition, in this scheme, after the lubricating oil flows to the sprocket, the centrifugal force during operation penetrates the lubricating oil into the chain pin shaft and the pin sleeve, and the lubrication effect and uniformity of the pin shaft and the sleeve are poor.

[0004] For another example, the existing patent CN118499452A discloses a guide rail oiling structure for a setting machine, including a tail sprocket and an oil guide plate. A groove is opened on the oil guide plate and a block is provided for blocking the groove. The protrusion on the block rubs against the trapezoidal plate groove on the chain to open the oil supply to the chain roller. The device controls the oil supply by the rubbing of the protrusion on the block and the trapezoidal plate on the chain. The structure is complex and there is also mechanical wear. At the same time, the scheme uses the centrifugal force generated by the rotation of the sprocket to divide the lubricating oil into the oil collecting area of ​​the oil guide plate, and its lubrication uniformity cannot be controlled. And the design of the annular groove on the oil guide plate will cause a waste of lubricating oil to a certain extent, resulting in an increase in the cost of lubrication. At the same time, the oil guide plate is not designed with a cover plate, and the lubricating oil pollution caused by impurities will damage the equipment in severe cases and reduce the service life of the equipment.

[0005] Based on the above problems, it is necessary to specifically propose an oil injection lubrication device for the chain links of the horizontal zipper clips of the film stretching production line, which can accurately and evenly supply oil lubrication to the chain clip links while reducing mechanical wear. Summary of the invention

[0006] The present invention proposes an oil injection lubrication device for horizontal zipper chain links of a film stretching production line, which can accurately and evenly supply oil to lubricate the chain clips and chain links, has the advantages of small mechanical wear, stable oil injection, precise energy saving, and can provide reliable guarantee for normal production.

[0007] In order to achieve the above technical objectives and the above technical effects, the present invention solves the above problems through the following technical solutions:

[0008] An oil-spraying lubricating device for a transverse chain clip link of a film stretching production line comprises a sprocket mounted on a transverse-stretching frame, the sprocket cooperates with the chain clip link to realize chain transmission, the pin shaft sleeve mating surfaces of the chain clip link are in communication and an oil-spraying inlet is arranged on the top, the sprocket is equipped with an oil-spraying mechanism to spray oil on the oil-spraying inlet; the sprocket is divided into N fan-shaped oil-spraying areas along the circumference, and N lubricating oil flow channels corresponding to each oil-spraying area are arranged in the sprocket center extension shaft at the top of the sprocket; the oil-spraying mechanism comprises a nozzle mounted on the sprocket along the circumference and pointing to the oil-spraying inlet, and the nozzle is connected to the lubricating oil of the corresponding oil-spraying area through an oil-spraying pipe. The lubricating oil flow channel is connected; a hydraulic station is arranged above the horizontal pulling frame, and the oil outlet end of the hydraulic station is connected to the oil injection solenoid valve, and the oil injection solenoid valve outputs N lubricating grease delivery pipes which are respectively connected to the corresponding lubricating oil flow channels; N nozzle working position proximity switches arranged longitudinally are arranged above the sprocket, and N circular arc protrusions corresponding to each injection area are arranged along the circumference of the outer wall of the central extension shaft of the sprocket, each circular arc protrusion has a height difference, and corresponds to a nozzle working position proximity switch respectively; the hydraulic station, the oil injection solenoid valve, and the nozzle working position proximity switch circuits are connected to the controller; N is an integer greater than or equal to 3.

[0009] In the above scheme, the lubricating oil is output from the hydraulic station and is controlled by the injection solenoid valve to be respectively delivered to the lubricating oil flow channels corresponding to different injection areas. The lubricating oil is sprayed out from the nozzle through the injection pipe and enters the injection inlet opened on the matching surface of the pin shaft sleeve of the chain clip chain link to lubricate the chain clip chain link. Each injection area in the device is equipped with a corresponding arc protrusion and a nozzle working position proximity switch. The controller controls the injection according to the proximity state signal of the arc protrusion and the nozzle working position proximity switch. Through this structure, the start and stop of the injection of each injection area can be effectively controlled to avoid the waste of lubricating oil.

[0010] Furthermore, the lubricating oil flow channel includes a flow channel ring opened at the top of the sprocket center extension shaft, the bottom of the flow channel ring is connected to the arc flow channel corresponding to the oil injection area through an L-shaped flow channel, and the nozzle is connected to the arc flow channel through an oil injection pipe; the flow channel circles of N lubricating oil flow channels are arranged concentrically in sequence; the top of the sprocket center extension shaft is tightly connected with an upper cover through an oil-proof gasket, the upper cover is provided with an oil inlet hole connected to the flow channel ring, and the lubricating grease delivery pipe is connected to the oil inlet hole of the upper cover and is connected to the corresponding lubricating oil flow channel for oil supply.

[0011] Furthermore, the hydraulic station is provided with a liquid level sensor, an oil heating rod, an oil temperature sensor, an oil pressure sensor, and a hydraulic oil pump whose lines are connected to the controller. When operating, the amount of lubricating oil, oil pressure, and oil temperature in the hydraulic station are fed back to the controller to ensure that it operates within a specified safety range.

[0012] Furthermore, the sprocket is driven by a driving mechanism installed thereunder, including an asynchronous motor installed on a driving frame, the asynchronous motor is connected to a reduction gearbox via a coupling, and the output end of the reduction gearbox is connected to the sprocket shaft to provide power; a high-precision encoder is installed on the asynchronous motor to measure the motor speed, and the asynchronous motor and the high-precision encoder circuits are connected to a controller.

[0013] The sprocket drive adopts a combination of asynchronous motor and high-precision encoder. The asynchronous motor performs single-axis high-precision speed control through the controller. The motor module in the controller can detect the speed, current, torque, temperature of the motor during operation and provide real-time feedback, ensuring the transmission safety and efficiency of the motor. The high-precision encoder is installed on the asynchronous motor shaft head to provide accurate position feedback signals for the transmission system and provide guarantee for the high-torque transmission of the sprocket.

[0014] Furthermore, a plurality of integrated temperature-controlled heaters are arranged along the circumference above the sprocket to heat the lubricating oil in the oil injection pipe. The integrated temperature-controlled heater is fixed to the upper cover or the fixed frame above the sprocket through a heating bracket. The integrated temperature-controlled heater includes a heating plate and an oil injection temperature sensor.

[0015] When the oil injection area enters the working state, the temperature sensor in the integrated temperature control heater corresponding to this area will feed back the temperature to the controller. The control system adjusts the heating power according to the set temperature, which can effectively prevent the lubricating oil from solidifying at low temperature or overheating to damage the pipeline equipment, and ensure that the quantitative nozzle evenly sprays oil on the pin sleeve of the chain clip and chain link.

[0016] Furthermore, the sprocket is divided into three oil injection areas along the circumference, and the lubricating oil flow channel, lubricating grease delivery pipe, nozzle working position proximity switch, and arc protrusion are the three corresponding to the oil injection areas, and N is an integer of 3.

[0017] The advantages and effects of the present invention are:

[0018] 1. The present invention proposes an oil spray lubrication device for the chain links of the transverse zipper clip of a film stretching production line, which divides the entire sprocket into a plurality of fan-shaped oil spray areas along the circumference. Each oil spray area is equipped with an independent oil spray passage and a proximity switch, which can realize the precise start and stop of the oil spray according to the working angle of the sprocket, thereby avoiding the waste and spillage of lubricating oil.

[0019] 2. This solution uses an asynchronous motor plus a high-precision encoder to control the rotation of the motor. The high-precision encoder provides accurate position feedback signals for the transmission system and provides a more accurate model for the controller to control the motor, ensuring the transmission safety and efficiency of the motor and providing protection for the high-torque transmission of the sprocket.

[0020] 3. This solution uses the hydraulic station level sensor, oil heating rod, oil temperature sensor, and oil pressure sensor to monitor the lubricating oil quantity, oil pressure, and oil temperature in real time and feeds back to the controller. The controller can determine whether the oil quantity and oil pressure are within the safe working range based on the signal, and adjust the power of the oil heating rod according to the temperature to ensure stable oil output.

[0021] 4. This solution sets an integrated temperature control heater to heat the lubricating oil in the injection pipe, which can effectively prevent the lubricating oil from solidifying at low temperature or overheating to damage the pipeline equipment, ensure that the quantitative nozzle sprays oil evenly on the pin shaft sleeve of the chain clip and chain link, and improve the quality of oil injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the present invention from a first viewing angle;

[0023] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the lubricating oil flow channel;

[0025] Figure 4 It is a schematic diagram of the top view of the lubricating oil flow channel;

[0026] Figure 5 This is the assembly drawing of the chain clip, chain link and nozzle.

[0027] Figure number identification: 1, sprocket, 2, chain clip and chain link, 2-1, oil injection inlet, 3, sprocket center extension shaft, 4, lubricating oil flow channel, 4-1, flow channel ring, 4-2, L-type flow channel, 4-3, arc flow channel, 5, nozzle, 6, oil injection pipe, 7, hydraulic station, 7-1, liquid level sensor, 7-2, oil heating rod, 7-3, oil temperature sensor, 7-4, oil pressure sensor;

[0028] 8. Fuel injection solenoid valve, 9. Lubricating grease delivery pipe, 10. Nozzle working position proximity switch, 11. Arc protrusion, 12. Controller, 13. Asynchronous motor, 14. Reducer, 15. High-precision encoder, 16. Drive rack, 17. Integrated temperature control heater, 17-1. Heating plate, 17-2. Fuel injection temperature sensor, 18. Upper cover, 19. Horizontal pull guide rail. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] The oil spray lubrication device for the clip chain links of the transverse zipper of the film stretching production line described in this embodiment is as shown in the attached Figure 1 , 2 As shown, the sprocket 1 and the transverse guide rail 19 are installed on the transverse frame, and the chain formed by the chain clips and chain links 2 are annularly sleeved on the transverse guide rail 19. The sprocket 1 is engaged with the chain clips and chain links 2 to realize chain transmission, and the controller 12 is set on the side of the transverse frame.

[0031] As attached Figure 5 As shown, the pin shaft sleeve mating surfaces of the chain clip and chain link 2 are connected and an oil injection inlet 2-1 is provided on the top. The sprocket 1 is equipped with an oil injection mechanism to spray oil on the oil injection inlet. The oil injection mechanism includes a lubricating oil flow channel 4, a nozzle 5, an oil injection pipe 6, a hydraulic station 7, an oil injection solenoid valve 8, and a lubricating grease delivery pipe 9. The sprocket 1 is divided into three fan-shaped oil injection areas along the circumference. The hydraulic station 7 is installed on the horizontal pulling frame. The oil outlet end of the hydraulic station 7 is connected to the oil injection solenoid valve 8. Three lubricating oil flow channels 4 corresponding to the three oil injection areas are provided in the sprocket center extension shaft 3 at the top of the sprocket 1. The oil injection solenoid valve 8 outputs three lubricating grease delivery pipes 9 that are respectively connected to the corresponding lubricating oil flow channels 4.

[0032] As attached Figure 3 , 4 As shown, the lubricating oil flow channel 4 includes a flow channel ring 4-1 opened at the top of the sprocket center extension shaft 3, and the bottom of the flow channel ring 4-1 is connected to the arc flow channel 4-3 corresponding to the oil injection area through the L-shaped flow channel 4-2. The flow channel rings 4-1 of the three lubricating oil flow channels 4 are arranged concentrically from the inside to the outside, and the top of the sprocket center extension shaft 3 is tightly connected to the upper cover 18 through an oil-proof gasket. The upper cover 18 has an oil inlet hole connected to the flow channel ring 4-1, and the lubricating grease delivery pipe 9 passes through the oil inlet hole of the upper cover 18 and is connected to the corresponding lubricating oil flow channel 4 for oil supply. The delivery pipe 9 at the oil inlet hole in the embodiment is welded to the upper cover 18, which can effectively prevent lubricating oil leakage.

[0033] As attached Figure 2As shown, the nozzle 5 is installed on the sprocket and points to the injection inlet. The longitudinal projection of the nozzle 5 corresponds to the space between the teeth of the sprocket 1. The installation quantity and length of the nozzle 5 are consistent with the teeth. The nozzle 5 is connected to the lubricating oil flow channel 6 corresponding to the injection area through the injection pipe 6. The injection pipe 6 is connected to the arc flow channel 4-3 of the lubricating oil flow channel 6.

[0034] The hydraulic station 7 is fixed with a liquid level sensor 7-1, an oil heating rod 7-2, an oil temperature sensor 7-3, an oil pressure sensor 7-4, and a hydraulic oil pump through a mounting seat, and the external wiring terminals are all retained outside the hydraulic station housing and connected to the controller 12. When working, the liquid level sensor 7-1, the oil temperature sensor 7-3, and the oil pressure sensor 7-4 feed back the lubricating oil amount, oil temperature, and oil pressure in the hydraulic station to the controller to ensure that it works within the specified safety range. When the oil heating rod 7-2 is working, the lubricating oil inside the hydraulic station 7 is pressurized and heated to reduce the viscosity of the lubricating oil and facilitate the lubricating oil transportation. The hydraulic oil pump transports the hydraulic oil to the injection solenoid valve 8.

[0035] The device is equipped with an injection detection device to control the injection of the three injection areas, and realizes precise control of the injection in combination with the working angle of the sprocket, including three nozzle working position proximity switches 10 arranged longitudinally above the sprocket 1, and three arc protrusions 11 arranged along the circumference on the outer wall of the sprocket center extension axis. Each arc protrusion 11 has a height difference, and each arc protrusion 11 corresponds to an injection area. The arc protrusion 11 is arranged ahead of the flow channel circle 4-1 on the circumference, so that the injection solenoid valve 8 responds to the oil supply in advance. Figure 2 , 4 As shown. The nozzle working position proximity switch 10 is connected to the controller 12. During operation, a safe distance is kept between the nozzle working position proximity switch 10 and the arc protrusion 11. When the arc protrusion 11 rotates to reach the approach state, the rising edge of the signal will maintain a period of injection high pressure time. When it is not in the approach state, the falling edge of the signal will maintain a period of injection pressure relief time. The nozzle working position proximity switch 10 is installed above the sprocket 1 through a detection frame connected to the upper cover 18. The upper cover 18 is installed above the sprocket 1 through a fixed frame. The fixed frame is fixed to the horizontal pulling frame. The upper cover 18 is rotatably connected to the sprocket center extension shaft 3. In order to avoid obstruction and better display the structure of the embodiment, the detection frame and the fixed frame are not drawn in the figure. In the embodiment, the nozzle working position proximity switch 10 is located in the middle of the arc area where the sprocket 1 and the chain mesh on the circumference.

[0036] Three integrated temperature-controlled heaters 17 are arranged along the circumference above the sprocket 1 to heat the lubricating oil in the oil injection pipe 6. The integrated temperature-controlled heater 17 is fixed to the upper cover 18 through a heating bracket, and includes a heating plate 17-1 and an oil injection temperature sensor 17-2 connected to the controller 12. The heating plate 17-1 heats the oil injection pipe 6, and the oil injection temperature sensor 17-2 detects the working temperature of the heating plate 17-1 and feeds it back to the controller 12. The working quantity and time of the integrated temperature-controlled heater 17 can be selected according to the actual oil injection amount of the equipment or nozzle.

[0037] The sprocket 1 is driven by a driving mechanism installed below it, including an asynchronous motor 13, a coupling, and a reduction box 14 installed on a driving frame 16 and connected in sequence. The output end of the reduction box 14 is connected to the axle of the sprocket 1 to provide power. A high-precision encoder 15 is installed on the shaft head of the asynchronous motor 13 to measure the motor speed. The asynchronous motor 13 and the high-precision encoder 15 are connected to the controller 12. The asynchronous motor 13 performs single-axis high-precision speed control through the controller 12 to ensure the transmission safety and efficiency of the motor. The high-precision encoding provides accurate position feedback signals for the transmission system, provides accurate position feedback signals for the chain clip and chain link lubrication injection system, and provides guarantee for the high-torque transmission of the sprocket.

[0038] The oil injection lubrication device for the horizontal chain clip chain links of the film stretching production line described in this embodiment is used. The drive mechanism is started to drive the sprocket 1 to drag the chain, and the hydraulic station 7 works to deliver the heated lubricating oil to the oil injection solenoid valve 8. The oil injection detection device works, the arc protrusion 11 rotates to reach the approach state to trigger the nozzle working position approach switch 10, and the output signal starts the corresponding oil injection solenoid valve 8 to supply oil to the lubricating oil flow channel 4. The integrated temperature control heater 17 heats the lubricating oil in the oil injection pipe 6, and the lubricating oil is sprayed from the nozzle 5 through the oil injection pipe 6 and points to the oil injection inlet 2-1. The arc protrusion 11 rotates out of the approach state, the oil injection solenoid valve 8 of the corresponding oil injection area is closed, and the next oil injection area enters the working state. When the temperature of the hydraulic station 7, the integrated temperature control heater 17, and the asynchronous motor 13 is abnormal and exceeds the set alarm temperature or process temperature, the asynchronous motor 13 will be stopped immediately, and the pressure of the hydraulic station will be released to ensure the safety of the chain clip chain links, sprockets, and guide rails. The use of this device can realize the oil injection lubrication of the chain clip chain links under the continuous operation state of the chain.

[0039] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and variations of these embodiments without departing from the principle and spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. An oil injection lubrication device for a horizontal chain clip link of a film stretching production line, comprising a sprocket (1) mounted on a horizontal chain frame, the sprocket (1) and the chain clip link (2) cooperate to realize chain transmission, characterized in that: The pin shaft sleeve mating surfaces of the chain clip and chain link (2) are in communication and are provided with an oil injection inlet (2-1) on the upper side, and the sprocket (1) is provided with an oil injection mechanism for spraying oil on the oil injection inlet; the sprocket (1) is divided into N fan-shaped oil injection areas along the circumference, and N lubricating oil flow channels (4) corresponding to each oil injection area are provided in the sprocket center extension axis (3) at the top of the sprocket (1); the oil injection mechanism comprises a nozzle (5) installed on the sprocket along the circumference and pointing to the oil injection inlet, and the nozzle (5) is connected to the lubricating oil flow channel (4) of the corresponding oil injection area through an oil injection pipe (6); A hydraulic station (7) is arranged above the horizontal pulling frame, and the oil outlet end of the hydraulic station (7) is connected to the oil injection solenoid valve (8), and the oil injection solenoid valve (8) outputs N lubricating grease delivery pipes (9) which are respectively connected to the corresponding lubricating oil flow channels (4); N nozzle working position proximity switches (10) arranged longitudinally are arranged above the sprocket (1), and N circular arc protrusions (11) corresponding to each oil injection area are arranged along the circumference of the outer wall of the central extension shaft of the sprocket, and each circular arc protrusion (11) has a height difference and corresponds to a nozzle working position proximity switch (10); The hydraulic station (7), the injection solenoid valve (8), and the nozzle working position proximity switch (10) are connected to the controller (12); and N is an integer greater than or equal to 3.

2. The oil spray lubrication device for the clip chain links of the film stretching production line according to claim 1, characterized in that: The lubricating oil flow channel (4) comprises a flow channel ring (4-1) opened at the top of the central extension axis of the sprocket, the bottom of the flow channel ring (4-1) is connected to the arc flow channel (4-3) corresponding to the oil injection area through an L-shaped flow channel (4-2), and the nozzle (5) is connected to the arc flow channel (4-3) through an oil injection pipe (6); the flow channel rings (4-1) of the N lubricating oil flow channels (4) are arranged concentrically in sequence; The top of the sprocket center extension shaft is tightly connected to an upper cover (18) via an oil-proof gasket. The upper cover (18) is provided with an oil inlet hole connected to the flow channel ring (4-1). The lubricating grease delivery pipe (9) is connected to the oil inlet hole of the upper cover (18) and is connected to the corresponding lubricating oil flow channel (4) for oil supply.

3. The oil spray lubrication device for the clip chain links of the transverse zipper in the film stretching production line according to claim 1, characterized in that: The hydraulic station (7) is provided with a liquid level sensor (7-1) whose lines are connected to the controller (12), an oil heating rod (7-2), an oil temperature sensor (7-3), an oil pressure sensor (7-4), and a hydraulic oil pump.

4. The oil spray lubrication device for the clip chain links of the transverse zipper of the film stretching production line according to claim 1, characterized in that: The sprocket (1) is driven by a driving mechanism installed below the sprocket (1), comprising an asynchronous motor (13) installed on a driving frame (16), the asynchronous motor (13) being connected to a reduction gearbox (14) via a coupling, the output end of the reduction gearbox (14) being connected to the axle of the sprocket (1) to provide power; a high-precision encoder (15) is installed on the asynchronous motor (13) to measure the motor speed, and the asynchronous motor (13) and the high-precision encoder (15) are connected to a controller (12) through lines.

5. The oil spray lubrication device for the clip chain links of the transverse zipper in the film stretching production line according to claim 1, characterized in that: A plurality of integrated temperature control heaters (17) are arranged along the circumference above the sprocket (1) to heat the lubricating oil in the oil injection pipe (6); the integrated temperature control heater (17) is fixed to the upper cover (18) or the fixed frame above the sprocket via a heating bracket; the integrated temperature control heater (17) comprises a heating plate (17-1) and an oil injection temperature sensor (17-2).

6. The oil spray lubrication device for the clip chain links of the transverse zipper in the film stretching production line according to claim 1, characterized in that: The sprocket (1) is divided into three oil injection zones along the circumference, and the lubricating oil flow channel (4), the lubricating grease delivery pipe (9), the nozzle working position proximity switch (10), and the arc protrusion (11) are three corresponding to the oil injection zones, and N is an integer of 3.

Images