Multi-station pre-bender for automobile rubber sealing strip

Abstract

The application relates to the technical field of automobile rubber sealing strip processing, and relates to a multi-station pre-bender for automobile rubber sealing strips. A pre-bender main body slides on the top of a pre-bender chassis along the length direction of the pre-bender main body. The pre-bender chassis is provided with an adjusting gear box for driving the pre-bender main body to move. The feeding end of the pre-bender main body is provided with a feeding guide mechanism, and the discharging end is provided with a discharging guide mechanism. A first roller is arranged on the sleeve ring at the two ends of the sliding shaft on the roller mounting plate of the feeding guide mechanism, and the first roller is arranged on the two sides of the feeding port. A second roller is arranged on the roller mounting plate. The angle displacement monitoring device of the discharging guide mechanism comprises an angle sensor on a bearing seat, and a second pressing wheel is connected to the central shaft of the first pressing wheel at the other end of the bearing seat through a swing rod. The tension adjusting structure arranged on the pre-bender main body is used for adjusting the tension of the metal belt guided by the feeding guide mechanism, so that the risk of the metal belt being broken in the production process is reduced, and the quality and product consistency of the rubber sealing strip processed by the pre-bender are effectively improved.

Description

Technical Field

[0001] This application relates to the field of automotive rubber sealing strip processing technology, and in particular to a multi-station pre-bending machine for automotive rubber sealing strips. Background Technology

[0002] A sealing strip is an item that ensures a tighter seal between two items. In common usage, sealing strips are made of plastic or rubber and are widely used in various industries such as automobiles, doors and windows, cabinets, refrigerators, and containers. Because plastic or rubber sealing strips are relatively soft, they lose their sealing performance with repeated use. Therefore, many sealing strips have an internal metal strip skeleton to prevent deformation and shrinkage, ensure a secure fit, and maintain good sealing performance. This necessitates introducing the sealing strip skeleton into the sealing strip production line, allowing it to be simultaneously removed during the melt extrusion of the sealing strip. Since sealing strip skeletons are purchased as long metal strips stored on large wooden rollers and need to be pressed into a specific shape before use, a device is required to continuously press the metal strips into the required sealing strip skeletons for subsequent processing.

[0003] Existing multi-station pre-bending machines for rubber sealing strips typically have the main body of the pre-bending machine and its feeding and discharging structures fixedly installed on the base of the equipment. During operation, the main body of the pre-bending machine lacks adjustment of the tension of the metal strip during the pre-bending process, resulting in inconsistent quality of the pre-bent metal strips, which affects the quality and consistency of the subsequent production of rubber sealing strips with skeletons. Summary of the Invention

[0004] In order to overcome the technical problems existing in the prior art, this application provides a multi-station pre-bending machine for automotive rubber sealing strips.

[0005] This application provides a multi-station pre-bending machine for automotive rubber sealing strips, which adopts the following technical solution:

[0006] A multi-station pre-bending machine for automotive rubber sealing strips includes a pre-bending machine base frame, an operation box mounted at one end of the base frame, and a pre-bending machine body slidably mounted on the top of the base frame along its length. The base frame houses an adjusting gearbox for driving the movement of the pre-bending machine body. The pre-bending machine body has an inlet and an outlet at both ends. A feeding guide mechanism is mounted on the base frame at the inlet end of the pre-bending machine body, and an outlet guide mechanism is mounted at the outlet end. The feeding guide mechanism includes a roller mounting plate, with collars at both ends of a sliding shaft mounted on the roller mounting plate. The machine is equipped with a first roller, which is located on both sides of the feed inlet. A second roller is also installed on the roller mounting plate, and the height of the second roller is greater than the height of the sliding shaft. The discharge guiding mechanism includes an angular displacement monitoring device located at the discharge outlet, which includes a slider slidably installed on the slide rail. A bearing seat is installed on the slider. An angle sensor is installed at one end of the bearing seat, and a first pressure roller is rotatably installed at the other end. The second pressure roller is connected to the central shaft of the first pressure roller through a swing rod. The pre-bending machine body includes a movable base frame and a protective net on top. The movable base frame is slidably installed along the length of the pre-bending machine base frame.

[0007] By adopting the above technical solution, the raw material first enters the feeding and guiding mechanism. On the roller mounting plate, the raw material is initially guided by the first rollers located on both sides of the feed inlet on the collars at both ends of the sliding shaft. At the same time, the second roller on the roller mounting plate, which is higher than the sliding shaft, further limits and guides the raw material, so that the raw material enters the pre-bending machine body from the feed inlet in a stable posture. The movable base frame of the pre-bending machine body can slide along the length of the pre-bending machine base frame, and its top protective net plays a protective role in the internal pre-bending process. Inside the pre-bending machine body, the raw material undergoes multi-station pre-bending processing to form the sealing strip skeleton of the required shape. After processing, the skeleton is discharged from the discharge port and enters the feed inlet. The material discharge and guiding mechanism is activated by the angular displacement monitoring device located at the discharge port. The slider slides on the slide rail to adjust the discharge position of the sealing strip skeleton. An angle sensor installed on one end of the bearing seat on the slider monitors the angle change of the skeleton in real time. The first pressure roller installed on the other end is connected to the second pressure roller through the swing rod on the central shaft to press and guide the skeleton during the discharge process, ensuring that the skeleton is output with accurate shape and position for the synchronous embedding process during the subsequent melting and extrusion of the sealing strip. The whole process realizes the automated operation of continuously pressing metal strips into sealing strip skeletons, meeting the needs of the production line.

[0008] Preferably, a meter counter is also mounted on the roller mounting plate, including a mounting frame, a meter counting wheel at the free end of the mounting frame, and a meter counting encoder located on the other side of the meter counting wheel. The other end of the mounting frame is rotatably mounted on the roller mounting plate.

[0009] By adopting the above technical solution, before the long metal strip raw material enters the pre-bending machine body through the first and second rollers of the feeding and guiding mechanism, the meter counter on the roller mounting plate begins to function. The meter counter's mounting frame is rotatably mounted on the roller mounting plate. When the long metal strip raw material is conveyed, it drives the metering wheel at the free end of the meter counter mounting frame to rotate. The meter encoder located on the other side of the metering wheel converts the rotation of the metering wheel into an electrical signal, thereby accurately calculating the length of the conveyed long metal strip raw material and achieving precise measurement of the feeding length. After the raw material completes multi-station pre-bending to form a sealing strip skeleton within the pre-bending machine body, the angle is monitored and the output is guided by the angular displacement monitoring device of the discharge guiding mechanism for use in subsequent sealing strip production processes. In this way, the entire process ensures accurate measurement of the raw material feeding length and ensures that the skeleton is output as required, meeting production needs.

[0010] Preferably, the angle sensor is connected to the central shaft of the first pressure roller via a coupling, and the bearing seat is also equipped with an upper limit plate and a lower limit plate to limit the rotation angle of the swing arm.

[0011] Preferably, the swing arm connecting the first pressure roller and the second pressure roller has a linear array of several sets of mounting holes, wherein the second pressure roller can be detachably installed in the mounting holes.

[0012] By adopting the above technical solution, the long metal strip raw material, after being guided by the first and second rollers of the feeding and guiding mechanism and measured by the meter counter, enters the pre-bending machine body to complete multi-station pre-bending to form a sealing strip skeleton, and then is discharged from the outlet to the discharge guiding mechanism. At this time, the angle sensor is connected to the central shaft of the first pressure roller through a coupling, which can accurately sense the change in the rotation angle of the first pressure roller and monitor the angle of the skeleton during discharge in real time. At the same time, the upper limit plate and lower limit plate on the bearing seat limit the rotation angle of the swing arm, ensuring that the first pressure roller and the second pressure roller press and guide the skeleton within a reasonable angle range. The swing arm connecting the first pressure roller and the second pressure roller is provided with a linear array of mounting holes. According to different specifications of sealing strip skeletons, the second pressure roller can be disassembled and installed in the appropriate mounting holes, flexibly adjusting the distance and pressure between the two pressure rollers, so that the skeleton is output in a stable posture to meet the requirements of subsequent production processes.

[0013] Preferably, the adjusting gearbox is driven by a servo motor, and the adjusting gearbox is also equipped with a servo motor controller. A drive pulley is installed on the output shaft of the adjusting gearbox, and a driven pulley corresponding to the drive pulley is installed on the pre-bending machine base frame. The drive pulley and the driven pulley are connected to the traction plate through a transmission belt. A tension sensor is installed in the transmission belt and is connected to the servo motor controller signal. The traction plate is fixedly installed on the movable base frame.

[0014] Preferably, a sliding block is fixedly installed at the bottom of the movable base frame, wherein the sliding block is slidably connected to a slide rail distributed along the length direction of the pre-bending machine base frame.

[0015] By adopting the above technical solution, the gearbox starts, and its output shaft drives the drive pulley to rotate. The drive pulley and the corresponding driven pulley are connected through the transmission belt. Since the traction plate is fixedly installed on the movable base, the rotating drive pulley and driven pulley pull the traction plate through the transmission belt, thereby driving the movable base to move and adjust. The tension sensor installed in the transmission belt monitors the tension of the metal strip between the movable base and the feeding guide mechanism in real time, and transmits the monitored signal to the servo motor controller, thereby adjusting the torque output of the servo motor, and thus adjusting the tension of the metal strip located on the movable base. The sliding block at the bottom of the movable base slides on the slide rails distributed along the length of the pre-bending machine base, ensuring that the movable base moves smoothly and accurately, so that the main body of the pre-bending machine can perform multi-station pre-bending operations on the raw materials according to the set path.

[0016] Preferably, the mobile base frame is also equipped with a pre-bending gearbox and a pre-bending machine roller assembly, wherein the output end of the pre-bending gearbox is connected to the roller end of the pre-bending machine roller assembly via a universal coupling.

[0017] By adopting the above technical solution, the pre-bending gearbox on the mobile base is started, and its output end transmits power to the ends of the rollers on the pre-bending machine roller group through a universal coupling, so that the pre-bending machine roller group can operate and perform multi-station pre-bending operation on the incoming long metal strip raw material, and process it into the required shape of the sealing strip skeleton.

[0018] Preferably, the pre-bending gearbox is located on the back of the mobile base frame, wherein the protective net extends into a protective baffle on one side of the pre-bending gearbox, and an electrical control box is also installed on the back of the pre-bending machine base frame.

[0019] By adopting the above technical solution, the protective baffle extending from the protective net to the pre-bending gearbox can effectively block debris from entering and ensure the safe operation of the pre-bending gearbox; while the electrical control box installed on the back of the pre-bending machine base frame controls and manages the electrical system of the entire pre-bending machine to ensure the coordinated operation of all components.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. This application uses a feeding and guiding mechanism in conjunction with a meter counter to ensure the orderly introduction and accurate measurement of the feeding length of long metal strips; the adjustment of the gearbox, drive pulley, driven pulley, and transmission belt drives the moving base frame to slide smoothly along the slide rail, allowing the pre-bending machine body to flexibly adjust its position. By setting a tension adjustment structure on the pre-bending machine body, the tension of the metal strip introduced by the feeding and guiding mechanism is adjusted, reducing the risk of metal strip breakage during production and effectively improving the quality and product consistency of the rubber sealing strips processed by the pre-bending machine.

[0022] 2. This application uses an angle sensor and pressure roller structure in the discharge guiding mechanism to accurately monitor the discharge angle of the skeleton and provide stable guidance. The mounting holes on the swing arm facilitate the adaptation of skeletons of different specifications. The protective baffle and the electrical control box respectively ensure the safe operation of the pre-bending gearbox and the stable control of the equipment's electrical system. The entire set of equipment can continuously press metal strips into the required sealing strip skeleton, ensuring that the skeleton is not easily deformed or shrinked and is firmly assembled. This provides high-quality raw materials for the skeleton to be embedded synchronously during the subsequent melting and extrusion of the sealing strip, improving the sealing performance and production efficiency of the sealing strip, and meeting the production needs of industries such as automobiles for sealing strips. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a multi-station pre-bending machine for automotive rubber sealing strips.

[0024] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a schematic diagram of the overall structure of the discharge side of a multi-station pre-bending machine for automotive rubber sealing strips.

[0026] Figure 4 yes Figure 3 Enlarged view at point B in the middle;

[0027] Figure 5 This is an exploded view of a multi-station pre-bending machine for automotive rubber sealing strips;

[0028] Figure 6 This is an exploded rear side view of a multi-station pre-bending machine for automotive rubber sealing strips.

[0029] Explanation of reference numerals in the attached drawings: 1. Pre-bending machine base frame; 11. Control box; 12. Adjusting gearbox; 121. Drive pulley; 122. Driven pulley; 13. Slide rail; 14. Electrical control box; 2. Pre-bending machine body; 21. Feed inlet; 22. Discharge outlet; 23. Moving base frame; 231. Traction plate; 232. Sliding block; 233. Pre-bending gearbox; 234. Pre-bending machine roller assembly; 24. Protective net; 241. Protective baffle; 3. Feeding and guiding mechanism; 31. Roller mounting plate; 32. 33. Sliding shaft; 34. Collar; 35. First roller; 36. Second roller; 37. Meter counter; 38. Mounting bracket; 39. Meter counting wheel; 30. Meter encoder; 41. Material discharge guiding mechanism; 42. Angular displacement monitoring device; 43. Slide rail; 44. Sliding block; 45. Bearing seat; 46. Upper limit plate; 47. Lower limit plate; 48. Angle sensor; 49. First pressure roller; 40. Swing rod; 416. Mounting hole; 417. Second pressure roller. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-6This application will be described in further detail.

[0031] This application discloses a multi-station pre-bending machine for automotive rubber sealing strips.

[0032] Reference Figures 1-6A multi-station pre-bending machine for automotive rubber sealing strips includes a pre-bending machine base frame 1, an operation box 11 installed at one end of the pre-bending machine base frame 1, and a pre-bending machine body 2 slidably mounted on the top of the pre-bending machine base frame 1 along its length. An adjusting gearbox 12 for driving the movement of the pre-bending machine body 2 is also installed on the pre-bending machine base frame 1. The pre-bending machine body 2 has an inlet 21 and an outlet 22 at its two ends, respectively. A feeding guide mechanism 3 is installed on the pre-bending machine base frame 1 at the feeding end of the pre-bending machine body 2, and an outlet guide mechanism 4 is installed at the outlet end of the pre-bending machine body 2. The feeding guide mechanism 3 includes a roller mounting plate 31, and a first roller 34 is mounted on the collars 33 at both ends of a sliding shaft 32 on the roller mounting plate 31. Rollers 34 are located on both sides of the feed inlet 21. A second roller 35 is also installed on the roller mounting plate 31, wherein the height of the second roller 35 is greater than the height of the sliding shaft 32. The discharge guiding mechanism 4 includes an angular displacement monitoring device 41 located at the discharge inlet 22, including a slider 412 slidably installed on the slide rail 411. A bearing seat 413 is installed on the slider 412. An angle sensor 414 is installed at one end of the bearing seat 413, and a first pressure roller 415 is rotatably installed at the other end. A second pressure roller 417 is connected to the central axis of the first pressure roller 415 through a swing rod 416. The pre-bending machine body 2 includes a movable base frame 23 and a protective net 24 on the top. The movable base frame 23 is slidably installed along the length of the pre-bending machine base frame 1. The raw material first enters the feeding and guiding mechanism 3. On the roller mounting plate 31, the raw material is initially guided by the first rollers 34 located on both sides of the feed inlet 21 on the end rings 33 of the sliding shaft 32. At the same time, the second roller 35 on the roller mounting plate 31, which is higher than the sliding shaft 32, further limits and guides the raw material, so that the raw material enters the pre-bending machine body 2 from the feed inlet 21 in a stable posture. The movable base frame 23 of the pre-bending machine body 2 can slide along the length of the pre-bending machine base frame 1. Its top protective net 24 plays a protective role in the internal pre-bending process. Inside the pre-bending machine body 2, the raw material undergoes multi-station pre-bending processing to form the sealing strip skeleton of the required shape. After processing, the skeleton is discharged from the discharge port 22 and enters the discharge guiding mechanism. 4. At this time, the angular displacement monitoring device 41 located at the discharge port 22 starts to work. The slider 412 slides on the slide rail 411 to adjust the discharge position of the sealing strip skeleton. The angle sensor 414 at one end of the bearing seat 413 installed on the slider 412 monitors the angle change of the skeleton in real time. The first pressure roller 415 installed at the other end is connected to the second pressure roller 417 through the swing rod 416 on the central shaft to press and guide the skeleton in the discharge process, ensuring that the skeleton is output with accurate shape and position so as to be used for the synchronous embedding process during the subsequent sealing strip melt extrusion. The whole process realizes the automated operation of continuously pressing metal strips into sealing strip skeletons, meeting the needs of the production line.

[0033] Reference Figures 1-6A meter counter 36 is also installed on the roller mounting plate 31, including a mounting frame 361, a meter-counting wheel 362 at the free end of the mounting frame 361, and a meter-counting encoder 363 located on the other side of the meter-counting wheel 362. The other end of the mounting frame 361 is rotatably mounted on the roller mounting plate 31. Before the long metal strip material is initially guided and limited by the first roller 34 and the second roller 35 of the feeding guide mechanism 3 into the pre-bending machine body 2, the meter counter 36 on the roller mounting plate 31 begins to function. The mounting frame 361 of the meter counter 36 is rotatably mounted on the roller mounting plate 31. When the long metal strip material is conveyed, it will drive the meter-counting wheel 362 at the free end of the mounting frame 361 of the meter counter 36 to rotate. The meter-counting encoder 363 located on the other side of the meter-counting wheel 362 converts the rotation of the meter-counting wheel 362 into an electrical signal, thereby accurately calculating the length of the conveyed long metal strip material and realizing accurate measurement of the feeding length. After the raw material is pre-bent at multiple stations within the pre-bending machine body 2 to form the sealing strip skeleton, the angle is monitored and the material is guided out by the angular displacement monitoring device 41 of the discharge guiding mechanism 4 for subsequent sealing strip production processes. This ensures accurate measurement of the raw material feeding length and guarantees that the skeleton is output as required, meeting production needs.

[0034] Reference Figures 1-6 Angle sensor 414 is connected to the central shaft of the first pressure roller 415 via a coupling, and an upper limit plate 4131 and a lower limit plate 4132 are also installed on the bearing seat 413 to limit the rotation angle of the swing arm 416. The swing arm 416, which connects the first pressure roller 415 to the second pressure roller 417, has a linear array of several sets of mounting holes 4161, in which the second pressure roller 417 can be detachably installed within the mounting holes 4161. After being guided by the first roller 34 and the second roller 35 of the feeding and guiding mechanism 3 and measured by the meter counter 36, the long metal strip raw material enters the pre-bending machine body 2 to complete multi-station pre-bending to form a sealing strip skeleton, and then is discharged from the discharge port 22 to the discharge guiding mechanism 4. At this time, angle sensor 414 is connected to the central shaft of the first pressure roller 415 via a coupling, enabling it to accurately sense changes in the rotation angle of the first pressure roller 415 and monitor the angle of the skeleton during discharge in real time. Meanwhile, the upper limit plate 4131 and lower limit plate 4132 on the bearing housing 413 limit the rotation angle of the swing rod 416, ensuring that the first pressure roller 415 and the second pressure roller 417 press and guide the skeleton within a reasonable angle range. The swing rod 416 connecting the first pressure roller 415 and the second pressure roller 417 is provided with a linear array of mounting holes 4161. According to different specifications of sealing strip skeletons, the second pressure roller 417 can be disassembled and installed in the appropriate mounting holes 4161, flexibly adjusting the distance and pressure between the two pressure rollers, so that the skeleton is output in a stable posture to meet the requirements of subsequent production processes.

[0035] Reference Figures 1-6The adjusting gearbox 12 is driven by a servo motor, and a servo motor controller is also installed inside the adjusting gearbox 12. A drive pulley 121 is mounted on the output shaft of the adjusting gearbox 12, and a driven pulley 122 corresponding to the drive pulley 121 is mounted on the pre-bending machine base frame 1. The drive pulley 121 and the driven pulley 122 are connected to the traction plate 231 via a transmission belt. A tension sensor is installed inside the transmission belt and is connected to the servo motor controller. The traction plate 231 is fixedly mounted on the movable base frame 23. A sliding block 232 is fixedly mounted on the bottom of the movable base frame 23, and the sliding block 232 is slidably connected to the slide rails 13 distributed along the length of the pre-bending machine base frame 1. When the adjusting gearbox 12 is started, its output shaft drives the drive pulley 121 to rotate. The drive pulley 121 and the corresponding driven pulley 122 are connected through a transmission belt. Since the traction plate 231 is fixedly installed on the movable base 23, the rotating drive pulley 121 and driven pulley 122 pull the traction plate 231 through the transmission belt, thereby driving the movable base 23 to move and adjust. The tension sensor installed in the transmission belt monitors the tension of the metal strip between the movable base and the feeding guide mechanism 3 in real time. The metal strip is selected as steel or aluminum strip, and the monitored signal is transmitted to the servo motor controller, thereby adjusting the torque output of the servo motor, thus adjusting the tension of the metal strip located on the movable base 23. The sliding block 232 at the bottom of the movable base 23 slides on the slide rails 13 distributed along the length of the pre-bending machine base 1, ensuring that the movable base 23 moves smoothly and accurately, so that the pre-bending machine body 2 can perform multi-station pre-bending operations on the raw materials according to the set path.

[0036] Reference Figures 1-6 The mobile base 23 is also equipped with a pre-bending gearbox 233 and a pre-bending machine roller assembly 234. The output end of the pre-bending gearbox 233 is connected to the roller ends of the pre-bending machine roller assembly 234 via a universal coupling. When the pre-bending gearbox 233 on the mobile base 23 is started, its output end transmits power to the roller ends of the pre-bending machine roller assembly 234 via the universal coupling, causing the pre-bending machine roller assembly 234 to rotate and perform multi-station pre-bending operations on the incoming long metal strip raw material, processing it into a sealing strip skeleton of the required shape.

[0037] Reference Figures 1-6 The pre-bending gearbox 233 is located on the back of the mobile base frame 23. A protective baffle 241 extends from the protective net 24 to one side of the pre-bending gearbox 233. An electrical control box 14 is also installed on the back of the pre-bending machine base frame 1. The protective baffle 241 extending from the protective net 24 to the pre-bending gearbox 233 effectively prevents debris from entering, ensuring the safe operation of the pre-bending gearbox 233. The electrical control box 14 installed on the back of the pre-bending machine base frame 1 controls and manages the entire electrical system of the pre-bending machine, ensuring coordinated operation of all components.

[0038] Working Principle: When the multi-station pre-bending machine for automotive rubber sealing strips is running, the long metal strip material first enters the feeding and guiding mechanism 3. The first roller 34 and the second roller 35 on the roller mounting plate 31 provide initial guidance and limit for the material. At the same time, the measuring wheel 362 of the measuring device 36 rotates under the influence of the material. The measuring encoder 363 converts the rotation into an electrical signal to accurately measure the feeding length. Subsequently, the adjusting gearbox 12 is started, and its output shaft drives the drive pulley 121 to rotate. The drive pulley 121 cooperates with the driven pulley 122 through the transmission belt, pulling the traction plate 231 fixed on the moving base 23, so that the sliding block 232 at the bottom of the moving base 23 slides smoothly along the slide rail 13 in the length direction of the pre-bending machine base 1.

[0039] After the movable base frame 23 is moved into place, the pre-bending gearbox 233 located on its back begins to work, transmitting power to the pre-bending machine roller group 234 through a universal coupling. This pre-bends the metal strip entering the pre-bending machine body 2 in multiple stations, processing it into the required shape of the sealing strip skeleton. During this process, the protective baffle 241 extending from the protective net 24 to one side of the pre-bending gearbox 233 prevents debris from entering, ensuring the normal operation of the pre-bending gearbox 233. The electrical control box 14 on the back of the pre-bending machine base frame 1 provides unified control and management of the equipment's electrical system.

[0040] After the finished sealing strip skeleton is discharged from the discharge port 22, it enters the discharge guiding mechanism 4. Angle sensor 414 is connected to the central shaft of the first pressure roller 415 via a coupling to monitor the skeleton's discharge angle in real time. The upper limit plate 4131 and lower limit plate 4132 on the bearing seat 413 limit the rotation angle of the swing rod 416, ensuring that the first pressure roller 415 and the second pressure roller 417 press and guide the skeleton at a suitable angle. The pressure can be adjusted by installing the second pressure roller 417 in different mounting holes 4161 on the swing rod 416 according to the skeleton specifications. Finally, the formed sealing strip skeleton is output in a stable posture for the subsequent synchronous embedding process during the sealing strip melt extrusion, realizing the automated production of sealing strip skeletons through continuous pressing of metal strips.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-station pre-bending machine for automotive rubber sealing strips, characterized in that: The machine includes a pre-bending machine base frame (1), one end of which is equipped with an operation box (11). A pre-bending machine body (2) is slidably mounted on the top of the pre-bending machine base frame (1) along its length. The pre-bending machine base frame (1) is equipped with an adjusting gearbox (12) for driving the pre-bending machine body (2) to move. The two ends of the pre-bending machine body (2) are respectively provided with a feed inlet (21) and a discharge outlet (22). A feeding guide mechanism (3) is installed on the pre-bending machine base frame (1) located at the feed end of the pre-bending machine body (2). A discharge guide mechanism (4) is installed at the discharge end of the pre-bending machine body (2); a feeding guide mechanism (3) is installed, the feeding guide mechanism (3) includes a roller mounting plate (31), a first roller (34) is installed on the collars (33) at both ends of the sliding shaft (32) on the roller mounting plate (31), wherein the first roller (34) is located on both sides of the feed inlet (21), and a second roller (35) is also installed on the roller mounting plate (31), wherein the height of the second roller (35) is greater than the height of the sliding shaft (32); The discharge guiding mechanism (4) includes an angular displacement monitoring device (41) located at the discharge port (22), including a slider (412) slidably installed on the slide rail (411), a bearing seat (413) installed on the slider (412), an angle sensor (414) installed at one end of the bearing seat (413), and a first pressure roller (415) rotatably installed at the other end, and a second pressure roller (417) is connected to the central axis of the first pressure roller (415) via a swing rod (416); the pre-bending machine body (2) includes a movable base frame (23) and a protective net (24) on top, the movable base frame (23) being slidably installed along the length direction of the pre-bending machine base frame (1).

2. The multi-station pre-bending machine for automotive rubber sealing strips according to claim 1, characterized in that: The roller mounting plate (31) is also equipped with a meter counter (36), which includes a mounting frame (361), a meter counter wheel (362) at the free end of the mounting frame (361), and a meter encoder (363) located on the other side of the meter counter wheel (362). The other end of the mounting frame (361) is rotatably mounted on the roller mounting plate (31).

3. The multi-station pre-bending machine for automotive rubber sealing strips according to claim 1, characterized in that: The angle sensor (414) is connected to the central shaft of the first pressure roller (415) by a coupling, and the bearing seat (413) is also equipped with an upper limit plate (4131) and a lower limit plate (4132) to limit the rotation angle of the swing arm (416).

4. A multi-station pre-bending machine for automotive rubber sealing strips according to claim 3, characterized in that: The first pressure roller (415) is connected to the second pressure roller (417) by a rocker arm (416) with a linear array of several sets of mounting holes (4161), wherein the second pressure roller (417) is detachably installed in the mounting holes (4161).

5. A multi-station pre-bending machine for automotive rubber sealing strips according to claim 1, characterized in that: The adjusting gearbox (12) is driven by a servo motor. The adjusting gearbox (12) is also equipped with a servo motor controller. The output shaft of the adjusting gearbox (12) is equipped with a drive pulley (121). The pre-bending machine base frame (1) is also equipped with a driven pulley (122) corresponding to the drive pulley (121). The drive pulley (121) and the driven pulley (122) are connected to the traction plate (231) through a transmission belt. A tension sensor is installed in the transmission belt and is connected to the servo motor controller signal. The traction plate (231) is fixedly installed on the movable base frame (23).

6. A multi-station pre-bending machine for automotive rubber sealing strips according to claim 5, characterized in that: The bottom of the movable base frame (23) is fixedly equipped with a sliding block (232), wherein the sliding block (232) is slidably connected to the slide rail (13) distributed along the length direction of the pre-bending machine base frame (1).

7. A multi-station pre-bending machine for automotive rubber sealing strips according to claim 1, characterized in that: The mobile base frame (23) is also equipped with a pre-bending gearbox (233) and a pre-bending machine roller assembly (234), wherein the output end of the pre-bending gearbox (233) is connected to the roller end of the pre-bending machine roller assembly (234) via a universal coupling.

8. A multi-station pre-bending machine for automotive rubber sealing strips according to claim 7, characterized in that: The pre-bending gearbox (233) is located on the back of the movable base frame (23), wherein the protective net (24) extends a protective baffle (241) to one side of the pre-bending gearbox (233), and an electrical control box (14) is also installed on the back of the pre-bending machine base frame (1).

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