A device for detecting the curvature of glass lifter guide rails

Abstract

The present invention discloses a device for detecting the curvature of a guide rail of a glass lifter, which belongs to the technical field of glass lifter production detection. The device comprises a main body module and a detection and recording module. The main body module comprises a device frame. A detection platform, a support plate and a connecting plate are fixedly connected between two sides of an inner wall of the device frame. The connecting plate is located between the detection platform and the support plate. By arranging an infrared transmitter, a reflective sheet, a moving component, a telescopic component, a drawing pen, a driving component, a rolling component and a recording tape, the infrared transmitter can obtain a value by measuring the distance from the reflective sheet. At the same time, the drawing pen will draw the curvature of the guide rail on the recording tape. The recording tape can be unfolded later to check whether the guide rail has defects in the same position, thereby facilitating the discovery and processing of problems existing in the guide rail bending process.

Description

Technical Field

[0001] The present invention relates to the technical field of glass lifter production and detection, and more specifically to a device for detecting the curvature of a glass lifter guide rail. Background Art

[0002] The glass lift is a lifting device for car door and window glass, which is mainly divided into two categories: electric glass lift and manual glass lift. Nowadays, many car door and window glass lifting generally uses button-type electric lifting method, using electric glass lift, and the guide rail is an indispensable part of the glass lift. During the production process of the guide rail, the curvature of the guide rail needs to be tested to ensure the quality of the guide rail.

[0003] With respect to the above-mentioned related technologies, the current manual detection method of curvature is usually to draw straight lines at both ends of the guide rail, let the line segment fit closely to the guide rail, and then measure the length of the guide rail to determine the curvature of the guide rail. This method has low detection precision and is not convenient for large-scale detection. Although the detection equipment can realize rapid curvature detection of the guide rail, in actual operation, the curvature interval is usually set. The detection equipment is quickly replaced after detecting the curvature interval of the guide rail, and the shape of the guide rail cannot be recorded, resulting in the staff being unable to uniformly compare the shapes of the detected guide rails and unable to find out whether the guide rails have uniformly small defects. If there are defects, it means that there may be problems with the guide rail bending machine or the bending process. Therefore, a curvature detection device for a glass lifter guide rail is proposed. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a device for detecting the curvature of a glass lifter guide rail, which adopts the following technical solution:

[0005] A device for detecting the curvature of a glass lifter guide rail comprises a main body module and a detection and recording module, wherein the main body module comprises a device frame, a detection platform, a support plate and a connecting plate are fixedly connected between two sides of an inner wall of the device frame, the connecting plate is located between the detection platform and the support plate, the detection platform is located below the connecting plate, a guide rail fixing frame is fixedly connected to the top of the detection platform, the detection and recording module comprises a moving component arranged at the bottom of the support plate, a telescopic component is arranged on the outer surface of the support plate, the telescopic component is connected to the moving component, a driving component is fixedly connected to one side of the device frame, the driving component is adapted to the moving component, and the A drawing pen and an infrared transmitter are connected to the telescopic component, and a reflective sheet located below the infrared transmitter is connected to the telescopic component. Two rolling components are arranged between the two sides of the inner wall of the device frame, and a recording belt is connected between the two rolling components, and the recording belt contacts the front end surface of the connecting plate. Two pressing components are arranged on the connecting plate, and both of the pressing components are in contact with the recording belt. A resistance component is arranged on one side of the inner wall of the device frame, and the resistance component contacts the two rolling components. The infrared transmitter is electrically connected to the display device, and a transmission gear is connected to one of the rolling components, and the transmission gear is adapted to the driving component.

[0006] Furthermore, the moving component includes two first rotating shafts that are rotatably connected to the inside of the support plate, the bottom ends of the two first rotating shafts are fixedly connected to sprockets, a chain is transmission-connected between the outer surfaces of the two sprockets, the bottom of the chain is fixedly connected to a driving shaft, one side of the device frame is rotatably connected to a second rotating shaft, one end of the second rotating shaft and the top end of one of the first rotating shafts are fixedly connected to a bevel gear, the outer surfaces of the two bevel gears are meshed with each other, and the other end of the second rotating shaft is fixedly connected to a pinion.

[0007] Furthermore, the telescopic assembly includes a U-shaped slide plate slidably connected to the outer surface of the support plate, a strip groove is provided at the bottom of the U-shaped slide plate, two square tubes are fixedly connected to the bottom of the U-shaped slide plate, the interiors of the two square tubes are movably connected with lifting rods, a rolling wheel is rotatably connected between the bottom ends of the two lifting rods, the top ends of the two lifting rods are fixedly connected with pressure springs, and the top ends of the two pressure springs are fixedly connected to the bottom of the support plate.

[0008] Furthermore, the infrared emitter and the reflective sheet are fixedly connected to the front end surface of one of the square tubes and one of the lifting rods, the drawing pen is fixedly connected to the rear end surface of another one of the lifting rods, and the driving shaft is movably connected inside the strip groove.

[0009] Furthermore, the rolling assembly includes two rolling shafts which are rotatably connected to both sides of the device frame respectively, and a slot is provided at the adjacent ends of the two rolling shafts, and a winding rod is movably connected between the insides of the two slots, and threaded pins are movably connected to both ends of the two rolling shafts and the winding rod, and the outer surfaces of the two threaded pins are threadedly connected to two nuts, and the recording tape is connected to the outer surface of the winding rod.

[0010] Furthermore, the rolling assembly also includes a ratchet fixedly connected to the outer surface of one of the winding rods, and a resistance spring and a ratchet are movably connected to the other side of the inner wall of the device frame, one end of the ratchet is movably connected to the outer surface of the ratchet, one end of the resistance spring is fixedly connected to the outer surface of the ratchet, and the transmission gear is fixedly connected to the other end of one of the rolling shafts.

[0011] Furthermore, the drive assembly includes a mounting frame fixedly connected to one side of the device frame, a drive motor is installed on the mounting frame, an output shaft of the drive motor is fixedly connected to an incomplete gear, and an outer surface of the incomplete gear is adapted to the pinion and the transmission gear.

[0012] Furthermore, the pressing assembly includes two pressing shafts that are movably connected inside the connecting plate, auxiliary springs are fixedly connected between one end of the two pressing shafts and the rear end surface of the connecting plate, and a pressure plate is fixedly connected between the other ends of the two pressing shafts, and the pressure plate is in contact with the recording tape.

[0013] Furthermore, the resistance assembly includes a hollow seat fixedly connected to one side of the inner wall of the device frame, and the interior of the hollow seat is movably connected to two movable rods, a resistance spring is fixedly connected between adjacent ends of the two movable rods, and the other ends of the two resistance springs are fixedly connected to resistance blocks.

[0014] Furthermore, the resistance assembly also includes two resistance rings, the two resistance rings are respectively connected to the two rolling assemblies, the resistance ring is fixedly connected to the outer surface of the other rolling shaft, and the outer surfaces of the two resistance rings are respectively in contact with the outer surfaces of the two resistance blocks.

[0015] In summary, the present invention includes the following beneficial technical effects:

[0016] (1) The present invention arranges an infrared transmitter, a reflective sheet, a moving component, a telescopic component, a drawing pen, a driving component, a rolling component and a recording tape, so that the infrared transmitter can obtain a value by measuring the distance to the reflective sheet. The distance value of the infrared transmitter is displayed by a display device, and the staff can check whether the value displayed by the display device meets the qualified standard. At the same time, the drawing pen will draw the curvature of the guide rail on the recording tape. The recording tape can be unfolded later to check whether the guide rail has defects at the same position, thereby facilitating the discovery and processing of problems existing in the guide rail bending process;

[0017] (2) The present invention can press the recording tape by arranging the connecting plate, the pressing shaft, the pressing plate and the auxiliary spring, thereby improving the stability of the recording tape when the drawing pen is drawing, thereby improving the stability of the drawing;

[0018] (3) The present invention can increase the resistance of the rolling shaft during rotation by providing the hollow seat, the movable rod, the resistance spring, the resistance ring and the resistance block, thereby making the recording tape more stable when stationary and improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the detection and recording module of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the mobile component and the telescopic component of the present invention;

[0022] Figure 4 It is a schematic structural diagram of the rolling assembly of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the driving assembly of the present invention;

[0024] Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0025] Figure 7 For the present invention Figure 5 Enlarged structural diagram at B in the middle.

[0026] Description of the numbers in the figure:

[0027] 100, main body module; 110, device frame; 120, test bench; 130, guide rail fixing frame; 140, display device; 150, support plate; 160, connection plate;

[0028] 200, detection and recording module; 210, infrared transmitter; 220, resistance assembly; 221, hollow seat; 222, movable rod; 223, resistance spring; 224, resistance ring; 225, resistance block; 230, moving assembly; 231, first rotating shaft; 232, sprocket; 233, chain; 234, driving shaft; 235, second rotating shaft; 236, bevel gear; 237, pinion; 240, telescopic assembly; 241, U-shaped slide plate; 242, square tube; 243, lifting lowering rod; 244, pressing spring; 245, rolling wheel; 250, drawing pen; 260, rolling assembly; 261, rolling shaft; 262, card slot; 263, threaded pin; 264, nut; 265, winding rod; 266, ratchet; 267, ratchet; 268, conflict spring; 270, recording tape; 280, driving assembly; 281, driving motor; 282, incomplete gear; 290, pressing assembly; 291, pressing shaft; 292, auxiliary spring; 293, pressing plate;

[0029] 300. Transmission gear. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The following is combined with Figure 1-7The present invention is described in further detail.

[0034] See also Figure 1-7 A device for detecting the curvature of a glass lift rail includes a main module 100 and a detection and recording module 200. The main module 100 includes a device frame 110. A detection platform 120, a support plate 150 and a connecting plate 160 are fixedly connected between the two sides of the inner wall of the device frame 110. The connecting plate 160 is located between the detection platform 120 and the support plate 150. The detection platform 120 is located below the connecting plate 160. A guide rail fixing frame 130 is fixedly connected to the top of the detection platform 120. The detection and recording module 200 includes a moving component 230 arranged at the bottom of the support plate 150. A telescopic component 240 is arranged on the outer surface of the support plate 150. The telescopic component 240 is connected to the moving component 230. A driving component 280 is fixedly connected to one side of the device frame 110. The driving component 280 is adapted to move with the moving component 230. The telescopic component 240 is connected to a drawing pen 250 and an infrared emitter 210, and the telescopic component 240 is connected to a reflective sheet located below the infrared emitter 210. Two rolling components 260 are arranged between the two sides of the inner wall of the device frame 110, and a recording belt 270 is connected between the two rolling components 260. The recording belt 270 contacts the front end surface of the connecting plate 160, and two pressing components 290 are arranged on the connecting plate 160. Both pressing components 290 are in contact with the recording belt 270. A resistance component 220 is arranged on one side of the inner wall of the device frame 110, and the resistance component 220 contacts the two rolling components 260. The infrared emitter 210 is electrically connected to the display device 140, and a transmission gear 300 is connected to one of the rolling components 260, and the transmission gear 300 is adapted to the driving component 280.

[0035] During use, the staff places the guide rail to be inspected on the guide rail fixing frame 130 for limiting, and then the staff turns on the drive assembly 280, the drive assembly 280 will first drive the transmission gear 300, the transmission gear 300 will drive one of the rolling assemblies 260 to roll, one of the rolling assemblies 260 will pull the recording tape 270 to make the other rolling assembly 260 unwind, so that the other part of the recording tape 270 is located in front of the connecting plate 160, and then the drive assembly 280 is disengaged from the transmission gear 300 and drives the moving assembly 230, the moving assembly 230 will drive the telescopic assembly 240 to move, and the telescopic assembly 240 will roll on the top of the guide rail. At this time, the infrared transmitter 210 is in the open state, and the reflective sheet will rise and fall according to the curvature of the guide rail, so that The infrared transmitter 210 can measure the distance value, and the distance value of the infrared transmitter 210 is displayed by the display device 140. The staff can check whether the value displayed by the display device 140 meets the qualified standard. During the displacement of the telescopic component 240, the drawing pen 250 will draw the arc shape of the guide rail on the recording tape 270, thereby completing the detection of the guide rail. After the detection is completed, the guide rail on the guide rail fixing frame 130 is replaced. After the replacement is completed, the driving component 280 drives the transmission gear 300 again, so that the drawing part of the recording tape 270 is switched again, so that the above steps are repeated for detection. After the recording tape 270 is fully drawn, the staff will remove the recording tape 270 and unfold it. The staff will check whether there is a problem of defects in the same position, and then the bending process can be better optimized.

[0036] The moving assembly 230 includes two first rotating shafts 231 that are both rotatably connected to the inside of the support plate 150, the bottom ends of the two first rotating shafts 231 are fixedly connected to sprockets 232, a chain 233 is transmission-connected between the outer surfaces of the two sprockets 232, the bottom of the chain 233 is fixedly connected to a driving shaft 234, one side of the device frame 110 is rotatably connected to a second rotating shaft 235, one end of the second rotating shaft 235 and the top of one of the first rotating shafts 231 are fixedly connected to a bevel gear 236, the outer surfaces of the two bevel gears 236 are meshed with each other, and the other end of the second rotating shaft 235 is fixedly connected to a pinion 237, and the telescopic assembly 240 includes a sliding connection A U-shaped slide 241 is connected to the outer surface of the support plate 150, and a strip groove is provided at the bottom of the U-shaped slide 241. Two square tubes 242 are fixedly connected to the bottom of the U-shaped slide 241. Lifting rods 243 are movably connected to the inside of the two square tubes 242. A rolling wheel 245 is rotatably connected between the bottom ends of the two lifting rods 243. The top ends of the two lifting rods 243 are fixedly connected to pressing springs 244. The top ends of the two pressing springs 244 are fixedly connected to the bottom of the support plate 150. The infrared transmitter 210 and the reflective sheet are fixedly connected to the front end surface of one of the square tubes 242 and one of the lifting rods 243. The drawing pen 250 is fixedly connected thereto. The rear end face of the other lifting rod 243 is connected to the driving shaft 234 in a movable manner inside the strip groove. The rolling assembly 260 includes two rolling shafts 261 respectively connected to the two sides of the device frame 110. The two rolling shafts 261 are provided with a slot 262 at the adjacent ends. A winding rod 265 is movably connected between the two slots 262. The two rolling shafts 261 and the two ends of the winding rod 265 are movably connected with threaded pins 263. The outer surfaces of the two threaded pins 263 are threadedly connected with two nuts 264. The recording tape 270 is connected to the outer surface of the winding rod 265. The rolling assembly 260 also includes a fixed connection to one of the winding rods 2 65, a ratchet 266 on the outer surface of the device frame 110, a conflict spring 268 and a ratchet 267 are movably connected on the other side of the inner wall of the device frame 110, one end of the ratchet 267 is movably connected to the outer surface of the ratchet 266, one end of the conflict spring 268 is fixedly connected to the outer surface of the ratchet 267, a transmission gear 300 is fixedly connected to the other end of one of the rolling shafts 261, and the driving assembly 280 includes a mounting frame fixedly connected to one side of the device frame 110, a driving motor 281 is installed on the mounting frame, and an output shaft of the driving motor 281 is fixedly connected to an incomplete gear 282, and the outer surface of the incomplete gear 282 is adapted to the pinion 237 and the transmission gear 300.

[0037] The driving motor 281 will transmit the incomplete gear 282, and the incomplete gear 282 will rotate the transmission gear 300. The transmission gear 300 will drive one of the rolling shafts 261 to roll, and one of the rolling shafts 261 will drive the ratchet 266 and the winding rod 265 to rotate. At this time, the winding rod 265 pulls the recording tape 270 to rewind it, and the winding rod 265 in the other rolling assembly 260 unwinds the recording tape 270, so that the other part of the recording tape 270 is located in front of the connecting plate 160. Subsequently, the incomplete gear 282 disengages from the transmission gear 300 and transmits the pinion 237. The pinion 237 drives the second rotating shaft 235 to rotate. Through the meshing of the two bevel gears 236, one of the first rotating shafts 231 rotates, and one of the first rotating shafts 231 drives the sprocket 232 to drive the chain 233 to roll. The chain 233 will drive the driving shaft 234 to move inside the strip groove and push the U-shaped slide plate 241 to move on the outer surface of the support plate 150. The guide rail 270 is moved, and the rolling wheel 245 rolls on the top of the guide rail by the elastic force of the pressing spring 244, so that the lifting rod 243 drives the reflective sheet and the drawing pen 250 to rise and fall according to the curvature of the guide rail, so that the infrared transmitter 210 can obtain a value by measuring the distance from the reflective sheet. During the movement of the lifting rod 243, the drawing pen 250 will draw the curvature shape of the guide rail on the recording tape 270, thereby completing the detection of the guide rail. After the detection is completed, the guide rail on the guide rail fixing frame 130 is replaced. After the replacement is completed, the incomplete gear 282 drives the transmission gear 300 again, so that the drawing part of the recording tape 270 is switched again, so that the above steps are repeated for detection. After the recording tape 270 is completely drawn, the staff can remove the threaded pin 263 and the nut 264 to release the fixation of the winding rod 265, so that the recording tape 270 can be removed and unfolded. The staff checks whether there is a problem of defects in the same position, and then the bending process can be better optimized.

[0038] The pressing assembly 290 includes two pressing shafts 291 that are movably connected inside the connecting plate 160, and an auxiliary spring 292 is fixedly connected between one end of the two pressing shafts 291 and the rear end surface of the connecting plate 160, and a pressure plate 293 is fixedly connected between the other ends of the two pressing shafts 291, and the pressure plate 293 is in conflict with the recording tape 270.

[0039] The pressure plate 293 is pressed against the outer surface of the recording tape 270 by the elastic force of the auxiliary spring 292 , thereby preventing the drawing pen 250 from shaking during drawing and improving the drawing accuracy.

[0040] The resistance assembly 220 includes a hollow seat 221 fixedly connected to one side of the inner wall of the device frame 110, and the hollow seat 221 is internally movably connected with two movable rods 222, and a resistance spring 223 is fixedly connected between the adjacent ends of the two movable rods 222, and the other ends of the two resistance springs 223 are fixedly connected to resistance blocks 225. The resistance assembly 220 also includes two resistance rings 224, and the two resistance rings 224 are respectively connected to the two rolling assemblies 260, and the resistance rings 224 are fixedly connected to the outer surface of the other rolling shaft 261, and the outer surfaces of the two resistance rings 224 are in contact with the outer surfaces of the two resistance blocks 225 respectively.

[0041] The resistance spring 223 applies pressure to the two resistance blocks 225 through the two movable rods 222. The two resistance blocks 225 press the two resistance circles 224 to increase the resistance of the rolling shaft 261 when it rolls, so that the rolling shaft 261 can be more stable when it is stationary.

[0042] The implementation principle of the embodiment of the present invention is as follows: during use, the staff places the guide rail to be inspected on the guide rail fixing frame 130 for limiting, and then the staff turns on the drive motor 281, the drive motor 281 will drive the incomplete gear 282, the incomplete gear 282 rotates the transmission gear 300, the transmission gear 300 will drive one of the rolling shafts 261 to roll, one of the rolling shafts 261 will drive the ratchet 266 and the winding rod 265 to rotate, so that the resistance spring 268 moves on the outer surface of the ratchet 266, at this time the winding rod 265 pulls the recording tape 270 to rewind it, and the winding rod 265 in the other rolling assembly 260 unwinds the recording tape 270, As a result, another part of the recording tape 270 is located in front of the connecting plate 160. Subsequently, the incomplete gear 282 is disengaged from the transmission gear 300 and transmits the pinion 237. The pinion 237 drives the second rotating shaft 235 to rotate. Through the meshing of the two bevel gears 236, one of the first rotating shafts 231 is rotated. One of the first rotating shafts 231 drives the sprocket 232 to drive the chain 233 to roll. The chain 233 will drive the driving shaft 234 to move inside the strip groove and push the U-shaped slide plate 241 to move on the outer surface of the support plate 150. At this time, the rolling wheel 245 rolls on the top of the guide rail through the elastic force of the pressing spring 244, so that the lifting rod 243 drives the reflective sheet and the drawing pen 250 according to the arc of the guide rail. The infrared emitter 210 is raised and lowered by a certain degree, so that the infrared emitter 210 can obtain a value by measuring the distance from the reflective sheet. The distance value of the infrared emitter 210 is displayed on the display device 140. The staff can check whether the value displayed on the display device 140 meets the qualified standard. During the movement of the lifting rod 243, the drawing pen 250 will draw the arc shape of the guide rail on the recording tape 270, thereby completing the detection of the guide rail. After the detection is completed, the guide rail on the guide rail fixing frame 130 is replaced. After the replacement is completed, the incomplete gear 282 drives the transmission gear 300 again, so that the drawing part of the recording tape 270 is switched again, so that the above steps are repeated for detection. After the recording tape 270 is completely drawn The staff can remove the threaded pin 263 and the nut 264 to release the fixation of the reeling rod 265, so that the recording tape 270 can be removed and unfolded. The staff can check whether there is a problem of defects in the same position, and then the bending process can be better optimized. The pressure plate 293 is pressed on the outer surface of the recording tape 270 by the elastic force of the auxiliary spring 292, so as to prevent the drawing pen 250 from shaking during drawing and improve the drawing accuracy. The resistance spring 223 applies pressure to the two resistance blocks 225 through the two movable rods 222. The two resistance blocks 225 will press the two resistance circles 224 to increase the resistance of the rolling shaft 261 during rolling, so that the rolling shaft 261 can be more stable when it is stationary.

[0043] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for detecting the curvature of a glass lifter guide rail, comprising a main module (100) and a detection and recording module (200), characterized in that: The main body module (100) comprises a device frame (110); a detection platform (120), a support plate (150) and a connection plate (160) are fixedly connected between two sides of an inner wall of the device frame (110); the connection plate (160) is located between the detection platform (120) and the support plate (150); the detection platform (120) is located below the connection plate (160); and a guide rail fixing frame (130) is fixedly connected to the top of the detection platform (120); The detection and recording module (200) comprises a moving component (230) arranged at the bottom of a support plate (150); a telescopic component (240) is arranged on the outer surface of the support plate (150); the telescopic component (240) is connected to the moving component (230); a driving component (280) is fixedly connected to one side of the device frame (110); the driving component (280) is adapted to the moving component (230); a drawing pen (250) and an infrared emitter (210) are connected to the telescopic component (240); a reflective sheet located below the infrared emitter (210) is connected to the telescopic component (240); and two rolling components (260) are arranged between two sides of the inner wall of the device frame (110). ), a recording tape (270) is connected between the two rolling assemblies (260), the recording tape (270) contacts the front end surface of the connecting plate (160), two pressing assemblies (290) are arranged on the connecting plate (160), the two pressing assemblies (290) both contact the recording tape (270), a resistance assembly (220) is arranged on one side of the inner wall of the device frame (110), the resistance assembly (220) contacts the two rolling assemblies (260), the infrared transmitter (210) is electrically connected to the display device (140), a transmission gear (300) is connected to one of the rolling assemblies (260), and the transmission gear (300) is adapted to the driving assembly (280); The moving assembly (230) comprises two first rotating shafts (231) both rotatably connected to the inside of the support plate (150); the bottom ends of the two first rotating shafts (231) are fixedly connected to sprockets (232); a chain (233) is transmission-connected between the outer surfaces of the two sprockets (232); the bottom of the chain (233) is fixedly connected to a driving shaft (234); a second rotating shaft (235) is rotatably connected to one side of the device frame (110); one end of the second rotating shaft (235) and the top end of one of the first rotating shafts (231) are fixedly connected to a bevel gear (236); the outer surfaces of the two bevel gears (236) are meshed with each other; and the other end of the second rotating shaft (235) is fixedly connected to a pinion gear (237); The telescopic assembly (240) comprises a U-shaped slide plate (241) slidably connected to the outer surface of the support plate (150), the bottom of the U-shaped slide plate (241) is provided with a strip groove, the bottom of the U-shaped slide plate (241) is fixedly connected to two square tubes (242), the interiors of the two square tubes (242) are movably connected to lifting rods (243), a rolling wheel (245) is rotatably connected between the bottom ends of the two lifting rods (243), the top ends of the two lifting rods (243) are fixedly connected to pressing springs (244), and the top ends of the two pressing springs (244) are fixedly connected to the bottom of the support plate (150); The infrared emitter (210) and the reflective sheet are fixedly connected to the front end surface of one of the square tubes (242) and one of the lifting rods (243); the drawing pen (250) is fixedly connected to the rear end surface of another of the lifting rods (243); and the driving shaft (234) is movably connected inside the strip groove.

2. The device for detecting the curvature of a glass lifter guide rail according to claim 1, characterized in that: The rolling assembly (260) comprises two rolling shafts (261) rotatably connected to two sides of the device frame (110), each of the two rolling shafts (261) having a slot (262) at one adjacent end, a reeling rod (265) movably connected between the insides of the two slots (262), threaded pins (263) movably connected between the two rolling shafts (261) and the two ends of the reeling rod (265), two nuts (264) being threadedly connected to the outer surfaces of the two threaded pins (263), and the recording tape (270) being connected to the outer surface of the reeling rod (265).

3. The device for detecting the curvature of a glass lifter guide rail according to claim 2, characterized in that: The rolling assembly (260) further comprises a ratchet (266) fixedly connected to the outer surface of one of the reeling rods (265); a resisting spring (268) and a ratchet (267) are movably connected to the other side of the inner wall of the device frame (110); one end of the ratchet (267) is movably connected to the outer surface of the ratchet (266); one end of the resisting spring (268) is fixedly connected to the outer surface of the ratchet (267); and the transmission gear (300) is fixedly connected to the other end of one of the rolling shafts (261).

4. The device for detecting the curvature of a glass lifter guide rail according to claim 3, characterized in that: The drive assembly (280) comprises a mounting frame fixedly connected to one side of the device frame (110), a drive motor (281) being mounted on the mounting frame, an output shaft of the drive motor (281) being fixedly connected to an incomplete gear (282), an outer surface of the incomplete gear (282) being compatible with the pinion gear (237) and the transmission gear (300).

5. The device for detecting the curvature of the guide rail of a glass lifter according to claim 4, characterized in that: The pressing assembly (290) comprises two pressing shafts (291) both movably connected inside the connecting plate (160), an auxiliary spring (292) being fixedly connected between one end of the two pressing shafts (291) and the rear end surface of the connecting plate (160), and a pressing plate (293) being fixedly connected between the other ends of the two pressing shafts (291), and the pressing plate (293) is in contact with the recording tape (270).

6. The device for detecting the curvature of the guide rail of a glass lifter according to claim 5, characterized in that: The resistance assembly (220) comprises a hollow seat (221) fixedly connected to one side of the inner wall of the device frame (110); two movable rods (222) are movably connected inside the hollow seat (221); a resistance spring (223) is fixedly connected between adjacent ends of the two movable rods (222); and the other ends of the two resistance springs (223) are fixedly connected to resistance blocks (225).

7. The device for detecting the curvature of the guide rail of a glass lifter according to claim 6, characterized in that: The resistance assembly (220) further comprises two resistance rings (224), the two resistance rings (224) being respectively connected to the two rolling assemblies (260), the resistance ring (224) being fixedly connected to the outer surface of another rolling shaft (261), and the outer surfaces of the two resistance rings (224) being respectively in contact with the outer surfaces of the two resistance blocks (225).

Images