An automatic deviation correcting mechanism for a conveyor belt film guide

Abstract

The application discloses a kind of automatic deviation rectifying mechanism for conveyor belt film guide, belong to flow channel equipment technical field, including profile support, inner roller assembly and outer roller assembly, two groups of driving rollers are rotatably assembled on profile support, film is wound on two groups of driving rollers and outer roller assembly, the inner roller cylinder in inner roller assembly is limit rotatably installed on bracket assembly, several counterweights are slidably assembled on the surface of inner roller cylinder, shell cylinder is arranged inside inner roller cylinder and is movably connected with counterweight, for adjusting the weight of inner roller cylinder, two groups of outer roller cylinder are slidably arranged on both sides of inner roller cylinder, for positioning and collecting film, the tension change caused by film creep is used in the application, the rotational speed of inner roller cylinder is adjusted in real time, the centrifugal force of counterweight and elastic force are dynamically balanced, the outer roller cylinder back push groove structure can be centered to collect both sides of film to inhibit deviation, and automatically increase or decrease overall weight, compensate elastic element pressure variation, maintain dynamic balance of film pressure, avoid membrane damage.

Description

Technical Field

[0001] This invention belongs to the field of flow channel equipment technology, specifically relating to an automatic correction mechanism for conveyor belt guide film. Background Technology

[0002] The conveyor belt guide film is a ring-shaped composite film that circulates inside a conveyor die-cutting machine. The conveyor die-cutting machine is equipped with steel die-cutting molds. Optical films are placed under the die-cutting molds in a cycle. The guide film supports the optical films to be cut and circulates with the machine.

[0003] The bottom layer of the composite guide membrane is a rigid PET layer, which provides strength to the composite membrane layer. The surface layer of the composite guide membrane is a soft EVA and / or PVC layer, which is used to withstand repeated punching by the die, reduce chipping and wear, and act as a buffer layer while conveying materials.

[0004] Because the composite guide film undergoes creep elongation during use, if no correction is made, the guide film will deviate from the roller during long-term cyclical movement, leading to die-cutting positioning failure, accelerated wear, and affecting the service life of the composite film. Furthermore, the soft EVA layer is very sensitive to tension changes, and the tension changes caused by creep will also affect the working state of the soft EVA layer. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an automatic correction mechanism for conveyor belt guide film to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An automatic correction mechanism for conveyor belt guiding film includes a mold frame unit and a guiding film. The mold frame unit includes a profile support and a drive roller. Two sets of drive rollers are rotatably mounted on the profile support, and the guiding film is wound around the two sets of drive rollers. The support assembly includes a base plate, a guide rod, and a slide base. The base plate is fixedly installed on the profile support, and the guide rod is provided on the base plate. The slide base is elastically slidably assembled on the guide rod. The inner roller assembly includes an inner roller, a middle roller, a sliding rod, a counterweight, a shell, and a connecting rod. The inner roller is rotatably mounted in a slide table, and a middle roller is fixedly installed at one end of the inner roller. Several sliding rods are arranged in a circumferential array at the outer diameter end of the inner roller, and a counterweight is elastically slidably mounted on the sliding rod. The shell is slidably arranged at the inner diameter end of the inner roller, and the shell and the counterweight are movably connected through a connecting rod. The shell is used to dynamically adjust the weight of the inner roller. The outer roller assembly includes an outer roller, a sleeve opening, and a shaft assembly. The two sets of outer rollers are respectively disposed on both sides of the inner roller, and one end of the outer roller is rotatably sleeved on the outer diameter end of the roller middle cylinder. The other end of the outer roller is fixed with a shaft assembly, which is rotatably sleeved on the outer diameter end of the inner roller. Two sets of guide films are wound around the outer diameter ends of the two sets of outer rollers.

[0007] As a further embodiment of the present invention, the mold frame unit further includes a shaft, a drive shaft wheel, and a primary synchronous belt. The shaft is coaxially fixedly arranged with the drive roller, and the drive shaft wheel is coaxially fixedly installed on one side of the shaft with a primary synchronous belt wound around it.

[0008] As a further embodiment of the present invention, the bracket assembly further includes a lower bracket, an upper bracket, and an elastic element. The lower bracket is fixedly mounted on the base plate, one end of the upper bracket is slidably mounted on the lower bracket, and the other end of the upper bracket is rotatably sleeved on the inner roller. The outer diameter end of the guide rod is also sleeved with an elastic element.

[0009] As a further embodiment of the present invention, the inner roller assembly further includes a through groove, a linkage rod, a crossbar and a steel ring. A through groove is provided on the wall surface of the inner roller near the roller cylinder. One end of the linkage rod is fixedly connected to the shell cylinder, and the other end of the linkage rod is fixedly connected to the crossbar. The crossbar passes through the through groove and is fixedly connected to the steel ring. The outer roller assembly also includes an inner annular groove, which is located at the inner diameter end of the outer roller, and the steel ring is rotatably mounted in the inner annular groove.

[0010] As a further embodiment of the present invention, the inner roller assembly further includes a piston, a guide tube, and a rotary valve core. The piston is slidably assembled in the inner cavity of the shell. One end of the guide tube passes through the shell and is fixedly connected to the piston. The other end of the guide tube is fixedly assembled to the end of the inner roller. The rotary valve core is fixedly assembled to one end of the upper bracket, and the rotary valve core and the guide tube are rotatably sealed and connected. The piston component is provided with through holes that communicate with the guide tube, for connecting the guide tube and the inner cavity of the shell.

[0011] As a further embodiment of the present invention, the automatic correction mechanism for guiding the conveyor belt film further includes a speed-changing transmission component. The speed-changing transmission component includes an upper shaft frame, an upper shaft cylinder, a sector-shaped slider, a lower shaft frame, a synchronous shaft wheel, and a lower shaft wheel. The upper shaft frame is fixedly mounted on one side of the upper support, the upper shaft cylinder is rotatably mounted on the upper shaft frame, and a plurality of sector-shaped sliders are radially arranged on the upper shaft cylinder. The lower shaft frame is fixedly mounted on one side of the lower support, and the synchronous shaft wheel and the lower shaft wheel are coaxially mounted and rotatably mounted on the lower shaft frame. The upper shaft cylinder is connected to the lower shaft wheel via a secondary synchronous belt, which is sleeved on several sector-shaped sliders.

[0012] As a further embodiment of the present invention, the speed transmission component further includes a limiting rod and a sliding plate. Several limiting rods are arranged circumferentially inside the upper shaft cylinder. One end of the sliding plate is fixedly connected to the fan-shaped slider, and the other end of the sliding plate is elastically slidably sleeved on the limiting rod.

[0013] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art: This invention drives the slide table shaft displacement by the tension change caused by the creep elongation of the guide film itself, and adjusts the inner roller speed in real time through the speed change transmission component, so that the centrifugal force and elastic force of the counterweight are dynamically balanced. No additional electrical control or frequent machine stop intervention is required, which improves the correction response speed and reliability. Furthermore, through the push-back groove linkage structure of the outer rollers, the two sets of outer rollers can actively center and converge the guide film side, suppressing the guide film deviation from two directions at the same time, and preventing the film from slipping or folding on the upper edge of the active roller, which is suitable for high-speed production lines that operate for a long time. Furthermore, the overall weight is automatically increased or decreased according to the changes in the inner roller speed, thereby compensating for pressure fluctuations in the elastic components and ensuring that the pressure of the outer roller on the guide film remains dynamically balanced, preventing damage to the film due to sudden changes in tension and extending the fatigue life of the mechanism. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of one embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram from another perspective of one embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the installation position of the bracket assembly in one embodiment of the present invention.

[0017] Figure 4 This is a partial structural diagram of a mold frame unit in one embodiment of the present invention.

[0018] Figure 5 This is a schematic diagram of the conductive membrane in one embodiment of the present invention.

[0019] Figure 6 This is a schematic diagram of the structure of the drive shaft pulley and the primary synchronous belt in one embodiment of the present invention.

[0020] Figure 7 This is a schematic diagram of the structure of the support assembly, inner roller assembly, and outer roller assembly in one embodiment of the present invention.

[0021] Figure 8 This is a partial cross-sectional view of the inner roller assembly in one embodiment of the present invention.

[0022] Figure 9 for Figure 8Enlarged schematic diagram of reference numeral A in the attached figure.

[0023] Figure 10 This is a schematic diagram of the structure of a speed transmission component in one embodiment of the present invention.

[0024] Figure label: Mold frame unit, 101-profile bracket, 102-side sealing plate, 103-shaft bracket, 104-drive roller, 105-side baffle, 106-shaft rod, 107-drive shaft wheel, 108-first-stage synchronous belt, 109-die-cutting base, 110-negative ion generator; Conductive membrane; Support assembly, 301-base plate, 302-guide rod, 303-slide table base, 304-lower support, 305-upper support, 306-elastic element; Inner roller assembly, 401-inner roller, 402-middle roller, 403-through groove, 404-sleeve, 405-synchronization ring, 406-slide rod, 407-counterweight, 408-shell, 409-connecting rod, 410-piston, 411-guide tube, 412-rotary valve core, 413-hose, 414-linkage rod, 415-crossbar, 416-steel ring; Outer roller assembly, 501-outer roller cylinder, 502-sleeve opening, 503-inner ring groove, 504-shaft assembly, 505-return groove; Speed ​​transmission components, 601-upper shaft frame, 602-upper shaft cylinder, 603-limiting rod, 604-sliding plate, 605-sector-shaped slider, 606-lower shaft frame, 607-synchronous shaft pulley, 608-lower shaft pulley, 609-secondary synchronous belt, 610-tertiary synchronous belt; a1 - First end, a2 - Second end, a3 - Constant volume cavity. Detailed Implementation

[0025] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Please see Figures 1-10An automatic correction mechanism for guiding film on a conveyor belt, as described in one embodiment of the present invention, has a first direction x, a second direction y, and a third direction z. The automatic correction mechanism includes a mold frame unit 1 and a guide film 2. The mold frame unit 1 includes a profile support 101 and active rollers 104. Two sets of active rollers 104 are rotatably mounted on the profile support 101, and the guide film 2 is wound around the two sets of active rollers 104. A support assembly 3 includes a base plate 301, a guide rod 302, and a slide table 303. The base plate 301 is fixedly mounted on the profile support 101, and the guide rod 302 is provided on the base plate 301. The slide table 303 is elastically slidably mounted on the guide rod 302. An inner roller assembly 4 includes an inner roller 401, a roller cylinder 402, a slide rod 406, a counterweight 407, a shell cylinder 408, and a connecting rod 409. The inner roller 401 is rotatably mounted on the slide table. In seat 303, a roller cylinder 402 is fixedly installed at one end of the inner roller 401. A plurality of sliding rods 406 are arranged in a circumferential array at the outer diameter end of the inner roller 401, and counterweights 407 are elastically slidably mounted on the sliding rods 406. A shell cylinder 408 is slidably arranged at the inner diameter end of the inner roller 401, and the shell cylinder 408 and the counterweights 407 are movably connected via a connecting rod 409. The shell cylinder 408 is used for dynamically adjusting the inner roller 401. The weight of 01; the outer roller assembly 5 includes an outer roller 501, a sleeve opening 502 and a shaft sleeve 504. The two sets of outer rollers 501 are respectively arranged on both sides of the inner roller 401, and one end of the outer roller 501 is rotatably sleeved on the outer diameter end of the roller cylinder 402. The other end of the outer roller 501 is fixed with a shaft sleeve 504, which is rotatably sleeved on the outer diameter end of the inner roller 401. The two sets of guide films 2 are wound around the outer diameter ends of the two sets of outer rollers 501.

[0027] In practical application, two sets of opposing side sealing plates 102 are mounted parallel to each other on the profile support 101. The two sets of side sealing plates 102 are spaced apart along the width direction of the conveyor belt and are fixedly connected to the end face of the profile support 101. Each set of side sealing plates 102 has a shaft support 103 fixedly mounted at both ends. The shaft support 103 provides a support base for the rotating roller system and is located between the two sets of shaft supports 103 on opposite sides. A drive roller 104 is rotatably mounted thereon. Side baffles 105 are arranged at adjacent positions on the side of the drive roller 104 and are fixedly mounted. Side baffles 105 are used to laterally limit the guide film 2 that passes around the drive roller 104 on the side sealing plate 102 and extend along the axial direction of the drive roller 104 to prevent the guide film 2 from shifting laterally during the conveying process. A die-cutting base 109 is fixedly installed between the two sets of side sealing plates 102. The die-cutting base 109 is located at a preset cutting station. Its upper surface is a flat support surface. The support surface extends continuously along the width direction of the guide film 2 and is used to provide rigid support for the bottom surface of the guide film 2 during the cutting operation to ensure the uniform transmission of cutting force when the cutting tool acts on the guide film 2.

[0028] Negative ion generators 110 are also arranged between the side sealing plates 102. The negative ion generators 110 are fixedly installed on the inner wall of the side sealing plate 102 or the upper end of the profile support 101. Their air outlets are set towards the bottom surface of the guide membrane 2. They are used to continuously spray air containing negative ions onto the bottom surface of the guide membrane 2 during the conveying process. The negative ion airflow can neutralize the static charge generated on the bottom surface of the guide membrane 2 due to friction or cutting action, thereby effectively eliminating the electrostatic adsorption effect. This allows the cutting debris adhering to the bottom surface of the guide membrane 2 to fall off by gravity, thus preventing the debris from affecting the operational stability of the guide membrane 2.

[0029] The base plate 301 is fixedly installed on the profile bracket 101. The base plate 301 is a flat structural component. The guide rod 302 is fixedly installed on the upper end face of the base plate 301 along the z-axis direction. A slide seat 303 is sleeved on the guide rod 302. The slide seat 303 slides with the outer circumferential surface of the guide rod 302 through an inner hole. An elastic element 306 is provided between the slide seat 303 and the base plate 301. The elastic element is sleeved on the outer circumference of the guide rod 302 so that the slide seat 303 has an elastic sliding function along the z-axis direction on the guide rod 302. That is, the slide seat 303 can slide up and down along the guide rod 302 under the action of external force, and return to the initial position by the restoring force of the elastic element after the external force is released.

[0030] The inner roller 401 is a hollow cylindrical structure with its outer circumferential surface forming the outer diameter end. A sleeve 404 and a synchronizing ring 405 are fixedly mounted on this outer diameter end. The outer circumferential surface of the sleeve 404 is rotatably installed in a mounting hole opened in the slide base 303, that is, the sleeve 404 is rotatably and limitingly installed in the slide base 303, so that the inner roller 401 can rotate freely relative to the slide base 303 around its own central axis. At the same time, the inner roller 401 drives the slide base 303 along the z-axis direction through the sleeve 404. The inner roller 401 is equipped with a first end a1 and a second end a2. The first end a1 is located at the end of the inner roller 401 near the middle roller 402, and the second end a2 is located at the end of the inner roller 401 away from the middle roller 402. Several sliding rods 406 are arranged on the outer circumference of the second end a2. The sliding rods 406 extend outward along the radial direction of the inner roller 401. Each sliding rod 406 is fitted with a counterweight 407, and the counterweight 407 is... An elastic compression element is provided between the slide rods 406. This elastic compression element is sleeved on the slide rods 406, thereby enabling the counterweight 407 to have an elastic sliding displacement function in the radial direction on the slide rods 406. When the inner roller 401 rotates around its own axial direction, the counterweight 407 slides outward along the slide rods 406 under the action of centrifugal force. The magnitude of the centrifugal force is related to the rotational speed of the inner roller 401. When the centrifugal force overcomes the elastic force of the elastic compression element, the counterweight 407 moves away from the inner roller. When the cylinder 401 moves in one direction, the outer end of the counterweight 407 is connected to the shell 408 via a connecting rod 409. That is, one end of the connecting rod 409 is hinged to the outer end face of the counterweight 407, and the other end of the connecting rod 409 is hinged to the shell 408. When the counterweight 407 moves radially outward, the counterweight 407 pulls the shell 408 to move synchronously along the axial direction of the inner roller 401 via the connecting rod 409. That is, the shell 408 generates axial displacement relative to the inner roller 401.

[0031] The outer roller 501 is a cylindrical hollow cylinder structure. The sleeve opening 502 is an annular opening structure at the inner hole of the end of the outer roller 501. The sleeve opening 502 is rotatably sleeved on the outer circumferential surface of the inner roller 402. The inner roller 402 is an annular boss structure fixedly set in the middle or end of the inner roller 401. The sleeve opening 502 and the inner roller 402 are clearance-fitted to allow the outer roller 501 to rotate freely relative to the inner roller 401 around their common axis. The other end of the outer roller 501 is provided with a shaft sleeve 5. 04. The shaft assembly 504 is an annular bushing structure, and its inner hole is rotatably fitted onto the inner roller 401. The shaft assembly 504 and the inner roller 401 are also clearance fit, so that the outer roller 501 has rotational freedom in the xoz plane, that is, the outer roller 501 can rotate relative to the inner roller 401 around its own axis. At the same time, the outer roller 501 also has sliding freedom in the y-axis direction, that is, the outer roller 501 can reciprocate sliding displacement relative to the inner roller 401 along its axial direction, that is, the y-axis direction.

[0032] When the shell cylinder 408 moves axially along the inner roller 401 under the traction of the counterweight 407, the shell cylinder 408 can adjust the position of the outer roller 501 in the y-axis direction, thereby realizing the position adjustment of the outer roller 501 relative to the inner roller 401 in the y-axis direction. The guide film 2 is inserted between the two sets of active rollers 104 and the outer roller 501. The guide film 2 passes around the upper surface of the active rollers 104 in sequence, and the outer circumferential surface of the outer roller 501 is pressed against the guide film 2. During the continuous conveying process of the guide film 2, the friction between the guide film 2 and the outer circumferential surface of the outer roller 501 drives the outer roller 501 to rotate around its own axis, that is, the outer roller 501 is in a follow-up rotation state, and its rotation speed is consistent with the linear velocity of the guide film 2. The outer roller 501, the guide film 2, the outer roller 501 ... When the platform 303 and the inner roller 401 move along the negative z-axis, the outer circumferential surface of the outer roller 501 applies a downward pressing force to the guide film 2. This pressing force causes the guide film 2 to undergo downward bending deformation when it passes around the outer roller 501, thereby applying tension to the guide film 2 along the conveying direction. Since the guide film 2 is a composite guide film made of multiple layers of composite materials, under long-term continuous conveying and repeated bending conditions, creep effect will occur inside the material, causing the total length of the guide film 2 to gradually increase, i.e., creep elongation. If the guide film 2 is not effectively tensioned, the loose guide film 2 will cause lateral sliding or deviation in the axial direction of the drive roller 104 due to insufficient tension when it passes around the drive roller 104, thus causing a deviation fault. Therefore, as the creep elongation of the guide film 2 accumulates, by continuously increasing the downward displacement of the outer roller 501 in the negative z-axis direction, that is, gradually increasing the pressing depth of the outer roller 501 on the guide film 2, the wrap angle and curvature of the guide film 2 around the outer roller 501 can be increased accordingly, thereby continuously compensating for the tension lost due to creep elongation, and thus realizing the continuous automatic correction function, ensuring the alignment accuracy and running stability of the guide film 2 on the conveying path.

[0033] Please see Figure 5 In a preferred embodiment of the present invention, the mold frame unit 1 further includes a shaft 106, a drive shaft wheel 107 and a primary synchronous belt 108. The shaft 106 is coaxially fixedly arranged with the drive roller 104, and the drive shaft wheel 107 is coaxially fixedly installed on one side of the shaft 106 and the primary synchronous belt 108 is wound around it.

[0034] In practical application, the shaft 106 is coaxially and fixedly connected to the drive roller 104, and one end of the shaft 106 is assembled and connected to the drive motor. The other end of the shaft 106 is coaxially equipped with the drive wheel 107. The drive wheel 107 and the synchronous wheel 607 are connected by a primary synchronous belt 108, thereby driving the synchronous wheel 607 to rotate on its fixed axis.

[0035] Please see Figure 7In a preferred embodiment of the present invention, the support assembly 3 further includes a lower support 304, an upper support 305, and an elastic element 306. The lower support 304 is fixedly installed on the base plate 301. One end of the upper support 305 is slidably mounted on the lower support 304, and the other end of the upper support 305 is rotatably sleeved on the inner roller 401. The outer diameter end of the guide rod 302 is also sleeved with an elastic element 306.

[0036] In practical application, the lower support 304 is fixedly installed on the base plate 301, and the upper support 305 is slidably inserted into the lower support 304 along the z-axis direction. The upper support 305 is rotatably sleeved on the sleeve 404 so that the inner roller 401 is limited to rotate and assembled in the upper support 305. When the upper support 305 moves along the negative z-axis direction, the inner roller 401 moves synchronously with the upper support 305.

[0037] Please see Figure 7 and Figure 9 In a preferred embodiment of this invention, the inner roller assembly 4 further includes a through groove 403, a linkage rod 414, a crossbar 415, and a steel ring 416. The inner roller 401 has a through groove 403 on its wall surface near the roller cylinder 402. One end of the linkage rod 414 is fixedly connected to the shell cylinder 408, and the other end of the linkage rod 414 is fixedly connected to the crossbar 415. The crossbar 415 passes through the through groove 403 and is fixedly connected to the steel ring 416. The outer roller assembly 5 further includes an inner ring groove 503, which is located at the inner diameter end of the outer roller 501. The steel ring 416 is rotatably mounted in the inner ring groove 503.

[0038] In practical application, the inner roller 401 is provided with a through groove 403 on one side of the first end a1. The through groove 403 is connected to the inner cavity of the inner roller 401. Since one end of the linkage rod 414 is fixedly connected to the shell 408, when the shell 408 moves in the y-axis direction, the linkage rod 414 moves synchronously with the shell 408. The other end of the linkage rod 414 is fixedly connected to a crossbar 415. The crossbar 415 is slidably fitted in the through groove 403 so that when the crossbar 415 moves in the y-axis direction, it synchronously drives the steel ring 416 to move. Since the steel ring 416 is rotatably fitted in the inner ring groove 503, it can synchronously drive the outer roller 501 to move in the y-axis direction.

[0039] Furthermore, the outer roller assembly 5 also includes a push-back groove 505, which protrudes from the outer diameter end of the outer roller 501 and forms a stepped groove with the outer wall surface of the outer roller 501, so that the side of the push-back groove 505 contacts the side of the guide film 2. The two sets of outer rollers 501 move in opposite directions in the y-axis direction. Since the total length of the guide film 2 increases during creep stretching, its width will decrease at the same time. The two sets of outer rollers 501 approach each other and play a central clamping function for the guide film 2, so that the guide film 2 is kept in the middle position of the two sets of outer rollers 501, further reducing the deviation of the guide film 2 during the cyclic movement.

[0040] Please see Figure 9 In a preferred embodiment of the present invention, the inner roller assembly 4 further includes a piston 410, a guide tube 411, and a rotary valve core 412. The piston 410 is slidably assembled in the inner cavity of the shell 408. One end of the guide tube 411 passes through the shell 408 and is fixedly connected to the piston 410. The other end of the guide tube 411 is fixedly assembled to the end of the inner roller 401. The rotary valve core 412 is fixedly assembled to one end of the upper bracket 305, and the rotary valve core 412 and the guide tube 411 are rotatably sealed and connected. The piston 410 is provided with a through hole that communicates with the guide tube 411, for connecting the guide tube 411 and the inner cavity of the shell 408.

[0041] In practical application, both sets of shell cylinders 408 are provided with a constant volume cavity a3. The piston component 410 and the guide pipe 411 are installed at one end of the shell cylinder 408. Since the guide pipe 411 is fixedly installed at the end of the inner roller 401, the volume of the constant volume cavity a3 is in a dynamic change process when the shell cylinder 408 slides in the y-axis direction. That is, when the shell cylinder 408 moves in the positive y-axis direction, the volume of the constant volume cavity a3 increases. Under the action of negative pressure, the oil on one side of the guide pipe 411 is drawn into the constant volume cavity a3, so as to increase the overall weight of the shell cylinder 408, further increasing the pressure on the slide table 303, thereby overcoming the elastic force of the elastic component 306, and causing the slide table 303 to move in the negative z-axis direction, thereby causing the outer roller 501 to move synchronously in the negative z-axis direction, so as to press the outer roller 501 onto the guide diaphragm 2 to maintain the tension of the guide diaphragm 2. When the shell 408 moves in the negative y-axis direction, the volume of the constant volume cavity a3 decreases. Under the action of positive pressure, the oil in the constant volume cavity a3 is forced into the guide pipe 411, so as to reduce the overall weight of the shell 408, reduce the pressure on the slide table 303, and the slide table 303 moves in the positive z-axis direction.

[0042] Furthermore, the rotary valve core 412 is connected to the guide pipe 411 via a rotary sealing valve, and the end of the rotary valve core 412 is connected to the oil tank via a hose 413, the weight of which is negligible.

[0043] Please see Figure 10 In a preferred embodiment of the present invention, a speed-changing transmission component 6 is further included. The speed-changing transmission component 6 includes an upper shaft frame 601, an upper shaft cylinder 602, a sector-shaped slider 605, a lower shaft frame 606, a synchronous shaft pulley 607, and a lower shaft pulley 608. The upper shaft frame 601 is fixedly mounted on one side of the upper support 305. The upper shaft cylinder 602 is rotatably mounted on the upper shaft frame 601, and a plurality of sector-shaped sliders 605 are radially arranged on the upper shaft cylinder 602. The lower shaft frame 606 is fixedly mounted on one side of the lower support 304. The synchronous shaft pulley 607 and the lower shaft pulley 608 are coaxially mounted and rotatably mounted on the lower shaft frame 606. The upper shaft cylinder 602 is connected to the lower shaft pulley 608 via a secondary synchronous belt 609, and the secondary synchronous belt 609 is sleeved on the plurality of sector-shaped sliders 605.

[0044] In practical application, the upper shaft frame 601 is fixedly mounted on the upper support 305, and the lower shaft frame 606 is fixedly mounted on the lower support 304. The rotating upper shaft cylinder 602 and the rotating lower shaft wheel 608 are connected by a secondary synchronous belt 609, and the synchronous shaft wheel 607 is connected by a primary synchronous belt 108. During the cyclic rotation of the guide film 2, the active roller 104 and the shaft 106 synchronously drive the active shaft wheel 107 to rotate, so that the primary synchronous belt 108 synchronously drives the synchronous shaft wheel 607 to rotate. During the rotation of the synchronous shaft wheel 607, the lower shaft wheel 608 at one end synchronously drives the upper shaft cylinder 602 to rotate, and the other end of the upper shaft cylinder 602 is connected to the synchronous ring 405 by a tertiary synchronous belt 610, so that the synchronous ring 405 drives the inner roller 401 to rotate synchronously.

[0045] Furthermore, the transmission component 6 also includes a limiting rod 603 and a sliding plate 604. Several limiting rods 603 are circumferentially arranged inside the upper shaft cylinder 602. One end of the sliding plate 604 is fixedly connected to the fan-shaped slider 605, and the other end of the sliding plate 604 is elastically slidably sleeved on the limiting rod 603. When the distance between the lower support 304 and the upper support 305 changes, the limiting rod 603 is adjusted accordingly. Figure 10For example, when the upper support 305 moves closer to the lower support 304 along the negative z-axis, the elastic force on the slide 604 side decreases when the upper shaft cylinder 602 is close to the lower shaft wheel 608, causing the fan-shaped slider 605 to slide away from the upper shaft cylinder 602. The outer diameter end of the fan-shaped slider 605 is provided with a groove that matches the secondary synchronous belt 609, so that the secondary synchronous belt 609 is always stuck in the groove. Since the rotation radius of the fan-shaped slider 605 increases after it extends radially, but the total length of the secondary synchronous belt 609 remains unchanged, the transmission ratio between the lower shaft wheel 608 and the upper shaft cylinder 602 changes, and the rotational angular velocity of the upper shaft cylinder 602 decreases, further reducing the rotational speed of the synchronous ring 405. The reverse is also true.

[0046] The specific workflow of this embodiment is as follows: S1. The guide film 2 is wound between two sets of drive rollers 104 and two sets of outer rollers 501. In the initial state, each set of outer rollers 501 is pressed against the lower surface of the guide film 2 so that the guide film 2 is kept in a pre-tensioned state under the joint constraint of the drive rollers 104 and the outer rollers 501. The lower shaft wheel 608 drives the upper shaft cylinder 602 and indirectly drives the three-stage synchronous belt 610 to rotate synchronously. The three-stage synchronous belt 610 transmits power to the synchronous ring 405. The synchronous ring 405 drives the inner roller 401 to rotate continuously around its own axis. When the inner roller... When 401 rotates, the counterweight 407 located on the side of the second end a2 of the inner roller 401 moves radially along the inner roller 401 under the action of centrifugal force. The counterweight 407 drives the shell 408 to translate along the positive y-axis. The internal constant volume cavity a3 of the shell 408 is reduced in volume due to the displacement of the shell 408, thereby discharging the oil pre-stored in the shell 408 to the external oil storage container through the guide pipe 411 and the hose 413. At this time, the overall weight of the inner roller 401 is lighter due to the discharge of oil, and the elastic element 306 is in a state of slight support. S2. When the guide membrane 2 undergoes irreversible stretching deformation due to the creep characteristics of the material during long-term continuous operation, the actual circumference of the guide membrane 2 gradually increases. The winding path of the guide membrane 2 between the drive roller 104 and the outer roller 501 increases accordingly, causing the height of the outer roller 501 in the z-axis direction to decrease. The decrease in the outer roller 501 drives the slide seat 303, which is fixed to it, to slide in the negative z-axis direction. The slide seat 303 further drives the upper support 305 to move downwards. After the upper support 305 decreases, the relative spatial position between the lower shaft wheel 608 and the upper shaft cylinder 602 mounted on the upper support 305 changes, leading to a change in the power transmission center distance between the lower shaft wheel 608 and the upper shaft cylinder 602. This change causes a corresponding change in the transmission ratio, further slowing down the output speed of the upper shaft cylinder 602 relative to the input speed of the lower shaft wheel 608. The upper shaft cylinder 602 is connected to the three-stage synchronous belt 610. The reduced rotational speed is transmitted to the synchronization ring 405, which drives the inner roller 401 to reduce its rotational speed. After the rotational speed of the inner roller 401 is reduced, the centrifugal force on the counterweight 407 is reduced accordingly. Under the action of the reset elastic element, the counterweight 407 slides back to the axis of the inner roller 401 and drives the shell 408 to move away from the guide tube 411. That is, the shell 408 translates along the negative y-axis. After the shell 408 translates, the volume of its internal constant volume cavity a3 increases, which creates a negative pressure in the constant volume cavity a3. As a result, external oil is drawn into the shell 408 through the hose 413 and the guide tube 411. After the oil enters the shell 408, the overall weight of the inner roller 401 increases to counteract the elastic compression reaction force of the elastic element 306 that gradually increases due to the descent of the upper support 305. This keeps the tension of the outer roller 501 on the guide film 2 in dynamic balance within the preset range. S3. Simultaneously with process S2 above, as the shell 408 moves away from the guide pipe 411 (i.e., along the negative y-axis), the linkage rod 414 fixedly connected to the end of the shell 408 moves synchronously with the shell 408. The movement of the linkage rod 414 pushes the crossbar 415 to translate along the negative y-axis. The crossbar 415 further pushes the steel ring 416 sleeved on the outside of the inner roller 401 to slide along the axial direction of the inner roller 401. The two sets of steel rings 416 respectively drive the two sets of outer rollers 501 along the roller cylinder 402. The axial direction is slidable so that the push groove 505 provided on the outer wall of the outer roller 501 moves toward the middle area of ​​the roller cylinder 402. The side wall of the push groove 505 contacts the two side edges of the guide film 2. During the sliding process, an inward pushing force is applied to the side of the guide film 2, so that the two side edges of the guide film 2 move toward the middle of the width direction of the guide film 2. In this way, the running trajectory of the guide film 2 on the drive roller 104 and the outer roller 501 is adjusted to the preset center position to prevent the guide film 2 from being laterally deviated during operation. S4. Repeat steps S1 to S3 above. During the entire process of continuous deformation of the guide film 2 due to material creep or tension fluctuation, the rotation speed of the inner roller 401, the position of the counterweight 407, the amount of oil in the shell 408, the compression of the elastic element 306, and the positions of the two sets of outer rollers 501 are adaptively adjusted. Thus, according to the real-time length change of the guide film 2, the height position of the outer rollers 501 in the z-axis direction is dynamically changed to adjust the tension of the guide film 2. At the same time, through mechanical linkage, the axial clamping position of the two sets of outer rollers 501 on the roller cylinder 402 is adjusted synchronously, so that the two sets of outer rollers 501 always apply centering and correction forces in opposite directions to the two sides of the guide film 2. Thus, when the length of the guide film 2 changes, the tension of the guide film 2 is kept stable, and the deviation and serpentine movement of the guide film 2 are suppressed, reducing the accumulation of deviation of the guide film 2 during high-speed operation.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic alignment mechanism for conveyor belt guide film, characterized in that, include: The mold frame unit includes a profile support and active rollers. Two sets of active rollers are rotatably mounted on the profile support, and the guide film is wound around the two sets of active rollers. The support assembly includes a base plate, a guide rod, and a slide base. The base plate is fixedly installed on the profile support, and the guide rod is provided on the base plate. The slide base is elastically slidably assembled on the guide rod. The inner roller assembly includes an inner roller, a middle roller, a sliding rod, a counterweight, a shell, and a connecting rod. The inner roller is rotatably mounted in a slide table, and a middle roller is fixedly installed at one end of the inner roller. Several sliding rods are arranged in a circumferential array at the outer diameter end of the inner roller, and a counterweight is elastically slidably mounted on the sliding rod. The shell is slidably arranged at the inner diameter end of the inner roller, and the shell and the counterweight are movably connected through a connecting rod. The shell is used to dynamically adjust the weight of the inner roller. The outer roller assembly includes an outer roller, a sleeve opening, and a shaft assembly. The two sets of outer rollers are respectively disposed on both sides of the inner roller, and one end of the outer roller is rotatably sleeved on the outer diameter end of the roller cylinder. The other end of the outer roller is fixed with a shaft assembly, which is rotatably sleeved on the outer diameter end of the inner roller. Two sets of guide films are wound around the outer diameter ends of the two sets of outer rollers.

2. The automatic alignment mechanism for conveyor belt guide film according to claim 1, characterized in that, The mold frame unit also includes a shaft, a drive shaft wheel, and a primary synchronous belt. The shaft is coaxially fixed to the drive roller, and the drive shaft wheel is coaxially fixed to one side of the shaft with a primary synchronous belt wound around it.

3. The automatic correction mechanism for conveyor belt guide film according to claim 1, characterized in that, The support assembly also includes a lower support, an upper support, and an elastic element. The lower support is fixedly installed on the base plate. One end of the upper support is slidably mounted on the lower support, and the other end of the upper support is rotatably sleeved on the inner roller. The outer diameter end of the guide rod is also sleeved with an elastic element.

4. The automatic correction mechanism for conveyor belt guide film according to claim 1, characterized in that, The inner roller assembly also includes a through groove, a linkage rod, a crossbar, and a steel ring. The inner roller has a through groove on the wall surface near the roller cylinder. One end of the linkage rod is fixedly connected to the shell cylinder, and the other end of the linkage rod is fixedly connected to the crossbar. The crossbar passes through the through groove and is fixedly connected to the steel ring. The outer roller assembly also includes an inner annular groove, which is located at the inner diameter end of the outer roller, and the steel ring is rotatably mounted in the inner annular groove.

5. The automatic alignment mechanism for conveyor belt guide film according to claim 3, characterized in that, The inner roller assembly also includes a piston, a guide tube, and a rotary valve core. The piston is slidably assembled in the inner cavity of the shell. One end of the guide tube passes through the shell and is fixedly connected to the piston. The other end of the guide tube is fixedly assembled to the end of the inner roller. The rotary valve core is fixedly assembled to one end of the upper bracket, and the rotary valve core and the guide tube are rotatably sealed and connected. The piston component is provided with through holes that communicate with the guide tube, for connecting the guide tube and the inner cavity of the shell.

6. The automatic alignment mechanism for conveyor belt guide film according to claim 3, characterized in that, It also includes a speed transmission component, which includes an upper shaft frame, an upper shaft cylinder, a sector-shaped slider, a lower shaft frame, a synchronous shaft wheel, and a lower shaft wheel. The upper shaft frame is fixedly mounted on one side of the upper support, the upper shaft cylinder is rotatably mounted on the upper shaft frame, and a plurality of sector-shaped sliders are radially arranged on the upper shaft cylinder. The lower shaft frame is fixedly mounted on one side of the lower support, and the synchronous shaft wheel and the lower shaft wheel are coaxially mounted and rotatably mounted on the lower shaft frame. The upper shaft cylinder is connected to the lower shaft wheel via a secondary synchronous belt, which is sleeved on several sector-shaped sliders.

7. The automatic correction mechanism for conveyor belt guide film according to claim 6, characterized in that, The speed transmission component also includes a limiting rod and a sliding plate. Several limiting rods are arranged circumferentially inside the upper shaft cylinder. One end of the sliding plate is fixedly connected to the fan-shaped slider, and the other end of the sliding plate is elastically slidably sleeved on the limiting rod.

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