Rubber hose hard core depoling machine and depoling method

Abstract

The invention relates to separation of metal and non-metal parts, in particular to the technical field of rubber hose hard core method production, and discloses a rubber hose hard core removing machine and a core removing method.The rubber hose hard core removing machine comprises a bottom beam, a vibration part is installed on the bottom beam, an adjusting part is further installed on the bottom beam, and a side beam is integrally connected to the bottom beam; a first driving part is installed on the side beam, a second driving part is arranged on the first driving part, a guide part is connected to the second driving part, the vibration part comprises a machine box, the machine box is fixedly connected to one end of the bottom beam, and an ultrasonic transducer, an amplitude-change pole and a vibration sleeve are arranged through the vibration part. A micron-sized instantaneous gap is formed between the hard core mold and the inner rubber of the rubber pipe, the viscous attaching state of the hard core mold and the inner rubber is destroyed, rigid contact friction between the hard core and the inner rubber is fundamentally eliminated, the technical problems that the inner wall of the rubber pipe is scratched and peeled due to an existing rigid pulling force depoling mode are solved, and the lossless machining effect in the depoling process of the rubber pipe is achieved.

Description

Technical Field

[0001] This invention relates to the separation of metal and non-metal parts, and more specifically to the field of rubber hose hard core production technology, specifically a rubber hose hard core removal machine and removal method. Background Technology

[0002] In the rigid core manufacturing process of rubber hoses, the rigid core serves as a molding die to ensure the inner diameter accuracy, roundness, and inner wall smoothness of the rubber hose. After the rubber hose is wound and vulcanized, the rigid core needs to be removed from the hose to complete the finished product processing. Currently, the mainstream rigid core removal methods in the industry all use "rigid tension" as the core driving force, specifically divided into mechanical traction type, hydraulic ejection type, and compressed air assisted traction type, etc.

[0003] In existing technologies, the core principle of rigid tension core removal is to apply axial rigid force through a traction mechanism or ejection mechanism to overcome the friction between the hard core and the inner wall of the rubber hose, thereby achieving separation. Because the hard core and the inner rubber layer of the hose form a certain adhesive bond during vulcanization, and because the surface of the hard core has minute processing marks or impurities, under rigid tension, the hard core and the inner wall of the hose will generate strong rigid sliding friction. A single axial rigid tension can easily lead to excessive tension causing severe friction and scratches between the hard core and the inner wall, or insufficient tension causing the hard core to jam, requiring increased tension to forcibly remove it, further exacerbating damage to the inner wall. Existing drag reduction measures, such as pre-coating the hard core with lubricant, compressed air, and water pressure, are all passive drag reduction methods. They cannot fundamentally eliminate the rigid contact between the hard core and the inner wall, resulting in limited drag reduction effects. Furthermore, the uniformity of the gap between the hard core and the inner wall can exacerbate damage to the inner wall.

[0004] Existing technicians have made improvements to address the aforementioned inner wall damage problem by optimizing the rigid tensile control precision, improving lubricant performance, and adding compressed air to assist in drag reduction. However, these improvements can only alleviate the damage to a certain extent and cannot meet the production requirements of high-pressure, precision, and large-scale rubber hoses. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a rubber hose hard core removal machine and removal method, which solves the problems of hose inner wall damage, low finished product qualification rate and limited removal efficiency caused by existing removal technologies relying on rigid tension.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a rubber hose hard core removal machine, comprising a bottom beam, a vibrating part mounted on the bottom beam, an adjusting part mounted on the bottom beam, a side beam integrally connected to the bottom beam, a first driving part mounted on the side beam, a second driving part mounted on the first driving part, a guide part connected to the second driving part, the vibrating part comprising a housing, the housing being fixedly connected to one end of the bottom beam, an ultrasonic transducer and an ultrasonic generator mounted inside the housing, an amplitude transformer mounted on the ultrasonic transducer, the amplitude transformer extending movably through to the outside of the housing and rotatably connected to a vibrating sleeve, a positioning rod fixedly connected to the center of the inner wall of the vibrating sleeve, a hard core mold mounted on the positioning rod, positioning holes matching the positioning rod being opened at both ends of the hard core mold, a rubber tube mounted on the hard core mold, the positioning rod being inserted into the positioning hole at one end of the hard core mold, and the end of the hard core mold being inserted into the inner wall of the vibrating sleeve.

[0007] Preferably, the adjustment part includes a bracket, which is fixedly connected to the bottom beam. A shock-absorbing sleeve is fixedly connected to the bracket. A slide block is slidably connected to the bottom beam. A main shaft is rotatably connected inside the slide block. A rotating rod is fixedly connected to one end of the main shaft. One end of the rotating rod slides through the bracket and the shock-absorbing sleeve and extends towards the hard core mold. A positioning rod two matching the positioning hole is fixedly connected to the extended end of the rotating rod. The positioning rod two is inserted into the positioning hole at the other end of the hard core mold.

[0008] Preferably, a slider is fixedly connected to the bottom of the slide block, the slider is slidably connected between the inner walls of the bottom beam, a hydraulic rod is provided on the slider, the hydraulic rod is installed between the inner walls of the bottom beam, the inner end of the hydraulic rod is fixedly connected to the slider, a sliding groove is provided at the bottom of the slide block, and a limiting arm that slides with the sliding groove is fixedly connected to the other end of the bottom beam.

[0009] Preferably, the first drive unit includes a control box, in which a differential controller and a motor are installed. The control box is fixedly connected to a side beam. The output shaft of the motor is fixedly connected to a rotating shaft. A mounting plate is fixedly connected to the side wall of the bracket. A drive shaft is rotatably connected to the mounting plate. A pulley is fixedly sleeved on both the drive shaft and the rotating shaft. A transmission belt is drivingly connected between the pulleys.

[0010] Preferably, a drive gear is fixedly sleeved on the drive shaft, and a sliding gear is fixedly sleeved on the rotating rod. The drive gear and the sliding gear mesh with each other, and the sliding gear is located between the bracket and the main shaft.

[0011] Preferably, the guide portion includes a base plate, a baffle is fixedly connected to the base plate, two support plates and two limiting blocks are symmetrically installed on the base plate, a rocker arm is hinged to each of the two support plates, a driven shaft is rotatably connected to each of the two rocker arms, a rubber threaded roller is fixedly connected between the driven shafts, and a hydraulic rod is hinged between each of the two rocker arms and the baffle.

[0012] Preferably, the second drive unit includes a second motor, which is installed in a control box. The output shaft of the second motor is fixedly connected to a second rotating shaft, and the end of the second rotating shaft is rotatably connected to an adjacent rocker arm. Both the second rotating shaft and the driven shaft on the same side are fixedly fitted with pulleys, and the pulleys are connected by a transmission belt.

[0013] Preferably, the two rocker arms abut against the two limiting blocks respectively, and the rubber threaded roller abuts against the rubber tube.

[0014] Preferably, the center of the second rotating shaft is aligned with the center of the hinge point of the rocker arm, a processing table is mounted on the bottom beam, the processing table is fixedly connected to the base plate, and support legs are installed at the bottom of the bottom beam, the chassis, the base plate, the side beam, and the processing table.

[0015] A method for removing the core from a rigid core of a rubber hose, comprising the following steps: Step 1: The ultrasonic transducer transmits the vibration to the vibration sleeve through the amplitude transformer, causing high-frequency micro-amplitude vibration to be generated on the surface of the hard core mold. The vibration wave generates a micron-level instantaneous gap between the hard core mold and the inner rubber of the rubber tube. Step 2: Motor 1 and Motor 2 generate different speeds through a differential controller. Rotary shaft 1 drives the drive shaft to rotate through transmission belt 1, which causes the drive gear to drive the sliding gear to rotate, thereby causing the rotating rod to rotate. The hard core mold rotates synchronously under the limiting action of positioning rod 1 and positioning rod 2. Step 3: The second rotating shaft drives the driven shaft to rotate through the second transmission belt, causing the rubber threaded roller to rotate, and driving the rubber tube to rotate through the frictional force. The second hydraulic rod provides support force. Step 4: The speed difference between motor 1 and motor 2, combined with the instantaneous gap caused by the vibration wave, creates a speed difference between the rubber tube and the hard core mold. The helical surface of the rubber threaded roller will generate an axial force on the rubber tube, causing the rubber tube to slowly slide axially along the thread lead direction, and finally detach from the hard core mold and land at the extension end of the rotating rod.

[0016] (III) Beneficial Effects Compared with the prior art, the present invention provides a rubber hose hard core removal machine and removal method, which has the following beneficial effects: 1. This rubber hose hard core removal machine uses an ultrasonic transducer, amplitude transformer, and vibration sleeve in the vibration section to generate high-frequency micro-amplitude vibration of the hard core mold. This creates a micron-level instantaneous gap between the hard core mold and the inner rubber of the rubber hose, disrupting their adhesive bonding. This eliminates the rigid contact friction between the hard core and the inner rubber from the source, solving the technical problems of scratches and peeling on the inner wall of the rubber hose caused by existing rigid tension removal methods. This achieves a non-destructive processing effect in the rubber hose removal process. 2. This rubber hose hard core removal machine uses a differential speed controller in the control box to adjust the output speeds of motor one and motor two to drive the hard core mold and rubber threaded roller to rotate respectively. This creates a controllable speed difference between the rubber hose and the hard core mold. Combined with the axial force generated by the rotation of the rubber threaded roller, it solves the problem that existing core removal technology relies on rigid tension, which can easily lead to hard core jamming and limited core removal efficiency. It achieves a smooth separation effect between the rubber hose and the hard core mold. 3. This rubber hose hard core removal machine, through the rotating connection structure of the vibrating part, allows the hard core mold to simultaneously receive high-frequency vibration and rotational power. Combined with the circumferential shear force of differential rotation and the axial component force of the rubber threaded roller, it replaces the traditional rigid axial tension removal method. All components work together to complete the removal operation, solving the problems of poor passive drag reduction effect and narrow applicability of existing removal technology, and achieving efficient coordination and wide applicability of the removal process. 4. This rubber hose hard core removal machine, through the adjustment unit, is equipped with hydraulic rod one, slide and positioning rod two, which, together with the positioning rod one of the vibration unit, complete the coaxial positioning of the hard core mold. Hydraulic rod one can drive the slide to slide axially to adjust the spacing, adapting to hard core molds of different lengths. At the same time, the shock-absorbing sleeve relieves the transmission of rotational vibration of the rotating rod, solving the problems of positioning and adapting hard core molds of different specifications and vibration transmission loss of equipment, and achieving stable clamping of hard core molds and equipment protection effect; 5. This rubber hose core removal machine, through the guide section, is equipped with a hydraulic rod two, a rocker arm, and a rubber threaded roller. The hydraulic rod two can adjust the angle of the rocker arm to ensure that the rubber threaded roller is in close contact with rubber hoses of different diameters. The limiting block limits the rocker arm. The rubber threaded roller drives the rubber hose to rotate through friction and provides the driving force for axial sliding. This solves the problems of drive adaptation for rubber hoses of different diameters and damage to the outer wall due to excessive contact force, and achieves the effect of adapting drive for rubber hoses and protecting the outer wall. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall top structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the overall bottom structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the vibration part of the present invention.

[0020] Figure 4 This is a diagram showing the fit between the hard core mold and the rubber tube of the present invention.

[0021] Figure 5 This is a diagram showing the cooperation between the adjustment part and the first drive part of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the hydraulic rod of the present invention.

[0023] Figure 7 This is a schematic diagram of the guide section of the present invention.

[0024] Figure 8 This is a diagram showing the assembly of the second driving part and the guide part of the present invention.

[0025] In the diagram: 1. Bottom beam; 2. Vibrating section; 21. Chassis; 22. Ultrasonic transducer; 23. Vibrating sleeve; 24. Positioning rod one; 25. Hard core mold; 26. Positioning hole; 27. Rubber tube; 3. Adjusting section; 31. Bracket; 32. Shock absorber sleeve; 33. Slide; 34. Main shaft; 35. Rotating rod; 36. Positioning rod two; 37. Slider; 38. Hydraulic rod one; 39. Slide groove; 310. Limiting arm; 4. First drive section; 41. Control box; 42. Electric... 43. Machine 1; 44. Shaft 1; 45. Mounting plate; 46. Drive shaft; 47. Transmission belt 1; 48. Drive gear; 5. Sliding gear; 69. Second drive unit; 50. Motor 2; 51. Shaft 2; 52. Pulley 2; 53. Transmission belt 2; 60. Guide unit; 61. Base plate; 62. Baffle; 63. Support plate; 64. Limiting block; 65. Rocker arm; 66. Driven shaft; 67. Rubber threaded roller; 68. Hydraulic rod 2; 7. Processing table; 8. Support leg. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1 - Figure 8This invention provides a rubber hose core removal machine, including a base beam 1, a vibrating part 2 mounted on the base beam 1, an adjusting part 3 mounted on the base beam 1, a side beam integrally connected to the base beam 1, a first driving part 4 mounted on the side beam, a second driving part 5 disposed on the first driving part 4, and a guide part 6 connected to the second driving part 5. The vibrating part 2 forms a micron-level instantaneous gap through high-frequency micro-amplitude vibration, disrupting the adhesive bonding state of the hose and the hard core, eliminating rigid friction at the source. The machine includes a casing 2. 1. The chassis 21 has a pre-reserved mounting cavity and wiring channel. The chassis 21 is fixedly connected to one end of the bottom beam 1. The chassis 21 houses an ultrasonic transducer 22 (PZT-8 type piezoelectric ceramic transducer, compatible with JCC-2000E, resonant frequency 20-40kHz, output amplitude 5-20μm, meeting the requirements for hard core vibration gap formation) and an ultrasonic generator (JCC-2000E, 20-40kHz adjustable, power 1500W, suitable for high frequency of hard core molds). (For micro-amplitude vibration requirements), the ultrasonic generator and ultrasonic transducer 22 are connected via a high-frequency cable. An amplitude transformer (coaxially compatible with the PZT-8 transducer) is installed on the ultrasonic transducer 22. The amplitude transformer extends through the outside of the housing 21 and is rotatably connected to the vibration sleeve 23. The amplitude transformer 29 and the vibration sleeve 23 are rotatably connected by a high-speed precision angular contact bearing. A positioning rod 24 is fixedly connected to the center of the inner wall of the vibration sleeve 23. A hard core mold 25 (40Cr quenched and tempered hard core mold) is set on the positioning rod 24. Positioning holes 26 matching the positioning rod 24 are opened at both ends of the hard core mold 25. A rubber tube 27 is set on the hard core mold 25. The positioning rod 24 is inserted into the positioning hole 26 at one end of the hard core mold 25. The end of the hard core mold 25 is inserted into the inner wall of the vibration sleeve 23. The rotation of the vibration sleeve 23 ensures that the hard core mold 25 can rotate with the drive of the first drive unit 4 while receiving high-frequency vibration, so that the vibration action and differential rotation action are synchronized.

[0028] In use, the positioning hole 26 at one end of the hard core mold 25 is aligned with the positioning rod 24, so that the end of the hard core mold 25 fits against the inner wall of the vibration sleeve 23, thus completing the positioning of one end of the hard core mold 25. The ultrasonic generator 20 converts the power frequency electrical energy into a high frequency electrical signal of 20-40kHz, which is transmitted to the ultrasonic transducer 22. The ultrasonic transducer 22 converts the high frequency electrical signal into mechanical vibration of the same frequency. After the amplitude is amplified to 5-20μm by the amplitude transformer 29, it is transmitted to the vibration sleeve 23.

[0029] The vibration sleeve 23 transmits high-frequency mechanical vibration to the hard core mold 25, causing the hard core mold 25 to perform axial high-frequency micro-amplitude vibration. This vibration acts on the bonding surface between the hard core mold 25 and the inner rubber of the rubber tube 27, causing the rubber material at the bonding surface to undergo periodic compression and rebound, breaking the adhesive force between the hard core mold 25 and the inner rubber, and forming a micron-level instantaneous gap between the two. This process directly eliminates the continuous rigid contact between the hard core and the inner rubber in the prior art, and fundamentally solves the problem of scratches, peeling and other inner wall damage caused by the relative sliding of the hard core and the inner rubber when the hard core is removed by rigid tension.

[0030] Compared with the existing technology of compressed air-assisted core removal, the instantaneous gap generated by this vibration unit 2 is actively formed by high-frequency vibration and is not affected by the initial gap uniformity. Even if the hard core mold 25 and the inner rubber of the rubber tube 27 are tightly bonded, the gap can still be generated stably, which effectively solves the problems of narrow applicability and unstable drag reduction effect of the existing passive drag reduction method.

[0031] In this invention, the adjusting part 3 is adapted to coaxially position both ends of the hard core mold 25 of different lengths and provides convenient loading and unloading. It includes a bracket 31, which is fixedly connected to the bottom beam 1. A shock-absorbing sleeve 32 (NR natural rubber shock-absorbing sleeve) is fixedly connected to the bracket 31. A slide block 33 is slidably connected to the bottom beam 1. A main shaft 34 is rotatably connected inside the slide block 33. A rotating rod 35 is fixedly connected to one end of the main shaft 34. One end of the rotating rod 35 slides through the bracket 31 and the shock-absorbing sleeve 32 and extends towards the hard core mold 25. A positioning hole 26 is fixedly connected to the extended end of the rotating rod 35. Positioning rod 36 is inserted into the positioning hole 26 at the other end of the hard core mold 25. A slider 37 is fixedly connected to the bottom of the slide block 33. The slider 37 is slidably connected between the inner walls of the bottom beam 1. A hydraulic rod 38 (HOB40×300FA heavy-duty hydraulic cylinder) is provided on the slider 37. The hydraulic rod 38 is installed between the inner walls of the bottom beam 1. The inner end of the hydraulic rod 38 is fixedly connected to the slider 37. A sliding groove 39 is opened at the bottom of the slide block 33. A limiting arm 310 that slides with the sliding groove 39 is fixedly connected to the other end of the bottom beam 1.

[0032] In use, the hydraulic rod 38 extends and retracts, causing the slider 37 to slide within the bottom beam 1. The slide block 33 moves synchronously with the slider 37. The rotating rod 35 moves axially along the bracket 31 and the shock-absorbing sleeve 32. The distance between the positioning rod 36 and the hard core mold 25 is adjusted. The positioning rod 36 is inserted into the positioning hole 26 at the other end of the hard core mold 25 to complete the positioning of both ends of the hard core mold 25. When the slide block 33 moves, the slide groove 39 slides along the limiting arm 310 to restrict the direction of movement of the slide block 33. The shock-absorbing sleeve 32 alleviates the transmission of vibration generated when the rotating rod 35 rotates to the bracket 31, thereby enabling the loading of the hard core mold 25 and the unloading of the rubber tube 27.

[0033] In this embodiment, the first drive unit 4 provides stable rotational power for the hard core mold 25, including a control box 41. The control box 41 houses a differential controller (TC787-20A dual-channel motor differential controller, compatible with two YE2 series variable frequency motors) and a motor 42 (YE2-90L-4 variable frequency speed control motor, power 1.5kW, rated speed 1440r / min, compatible with the differential controller, speed stepless adjustment from 0-50r / min). The control box 41 is fixedly connected to the side beam. The output shaft of machine 42 is fixedly connected to a rotating shaft 43. The side wall of bracket 31 is fixedly connected to a mounting plate 44. A drive shaft 45 is rotatably connected to the mounting plate 44. Both the drive shaft 45 and the rotating shaft 43 are fixedly fitted with pulleys. A transmission belt 46 is connected between the pulleys. A drive gear 47 is also fixedly fitted on the drive shaft 45. A sliding gear 48 is fixedly fitted on the rotating rod 35. The drive gear 47 and the sliding gear 48 mesh with each other. The sliding gear 48 is located between the bracket 31 and the main shaft 34.

[0034] In use, the differential controller adjusts the output speed of motor 42 to a set speed. Motor 42 drives shaft 43 to rotate. Shaft 43 drives drive shaft 45 to rotate on mounting plate 44 through pulley 1 and transmission belt 46. Drive shaft 45 drives drive gear 47 to rotate. Drive gear 47 meshes with sliding gear 48 to drive the rotating rod 35 to rotate. Rotating rod 35 drives hard core mold 25 to rotate through positioning rod 36. Main shaft 34 rotates synchronously with rotating rod 35 in slide 33, providing rotational support for rotating rod 35.

[0035] It is worth noting that the guide part 6 uses friction and axial force to guide the rubber tube 27 to slide slowly and fall off along the hard core mold 25. It includes a base plate 61, on which a baffle 62 is fixedly connected. Two support plates 63 and two limiting blocks 64 are symmetrically installed on the base plate 61. Rocker arms 65 are hinged on both support plates 63. Driven shafts 66 are rotatably connected to both rocker arms 65. Rubber threaded rollers 67 (nitrile rubber) are fixedly connected between the driven shafts 66. Hydraulic rods 68 (MOB32×100FA light hydraulic cylinders) are hinged between the two rocker arms 65 and the baffle 62. The two rocker arms 65 abut against the two limiting blocks 64 respectively, and the rubber threaded rollers 67 abut against the rubber tube 27.

[0036] In use, the hydraulic rod 68 extends and retracts, causing the rocker arm 65 to rotate around the hinge point of the support plate 63, adjusting the height of the rubber threaded roller 67 so that the rubber threaded roller 67 is in close contact with the outer wall of the rubber tube 27. The limiting block 64 limits the rotation position of the rocker arm 65 to prevent misalignment and separation between the rubber threaded roller 67 and the rubber tube 27.

[0037] It is worth noting that the second drive unit 5 forms a controllable speed difference between the rubber tube 27 and the hard core mold 25, including a second motor 51 (YE2-90L-4 variable frequency speed control motor, power 1.1kW, rated speed 1440r / min, matched with the first motor 42, speed stepless adjustment from 0-30r / min). The second motor 51 is installed in the control box 41. The output shaft of the second motor 51 is fixedly connected to a rotating shaft 52. The end of the rotating shaft 52 is rotatably connected to the adjacent rocker arm 65. The rotating shaft 52 and the driven shaft 66 on the same side are both fixedly fitted with pulleys 53. The pulleys 53 are connected by a transmission belt 54. The center of the rotating shaft 52 is aligned with the center of the hinge point of the rocker arm 65. A processing table 7 is installed on the bottom beam 1. The processing table 7 is fixedly connected to the base plate 61. The bottom of the bottom beam 1, the machine box 21, the base plate 61, the side beams and the bottom of the processing table 7 are all equipped with support legs 8.

[0038] In use, the differential controller adjusts the output speed of motor 2 51 to be different from that of motor 1 42. Motor 2 51 drives shaft 2 52 to rotate. Shaft 2 52 drives driven shaft 66 to rotate through pulley 2 53 and transmission belt 2 54. Driven shaft 66 drives rubber threaded roller 67 to rotate. When rocker arm 65 rotates, shaft 2 52 rotates synchronously with rocker arm 65, and its center is aligned with the center of the hinge point of rocker arm 65 to ensure that transmission belt 2 54 is always taut. Processing table 7 provides support for base plate 61, and support legs 8 support the entire equipment to ensure the stability of the equipment during operation.

[0039] A method for removing the core from a rigid core of a rubber hose, comprising the following steps: Step 1: The ultrasonic transducer 22 transmits the vibration to the vibration sleeve 23 through the amplitude transformer, causing the surface of the hard core mold 25 to generate high-frequency micro-amplitude vibration. The vibration wave generates a micron-level instantaneous gap between the hard core mold 25 and the inner rubber of the rubber tube 27. Step 2: Motor 1 42 and Motor 2 51 generate different speeds through a differential controller. Rotary shaft 1 43 drives drive shaft 45 to rotate through transmission belt 1 46, which causes drive gear 47 to drive sliding gear 48 to rotate, thereby causing rotating rod 35 to rotate. Hard core mold 25 rotates synchronously under the limiting action of positioning rod 1 24 and positioning rod 2 36. Step 3: The rotating shaft 52 drives the driven shaft 66 to rotate through the transmission belt 54, causing the rubber threaded roller 67 to rotate, and driving the rubber tube 27 to rotate through the contact friction force. The hydraulic rod 68 provides support force. Step 4: There is a speed difference between motor 1 42 and motor 2 51. Combined with the instantaneous gap caused by the vibration wave, a speed difference is formed between rubber tube 27 and hard core mold 25. The helical surface of rubber thread roller 67 will generate an axial component force on rubber tube 27, causing rubber tube 27 to slowly slide axially along the thread lead direction, and finally detach from hard core mold 25 and land at the extension end of rotating rod 35.

[0040] Working principle: The bottom beam 1 is the overall basic support structure. Through the coordinated linkage of the vibration part 2, adjustment part 3, first drive part 4, second drive part 5 and guide part 6, combined with ultrasonic vibration drag reduction, differential rotation drive and axial force traction, it replaces the traditional rigid tension core removal mode to achieve non-destructive separation of rubber tube 27 and hard core mold 25. The processing table 7 provides a stable installation foundation for the guide part 6. The support legs 8 support and level all structures such as bottom beam 1, machine box 21, base plate 61 to ensure the stability of the whole machine during operation.

[0041] When the equipment is working, the hydraulic rod 38 of the adjustment unit 3 first extends and retracts, driving the slider 37 to slide in the bottom beam 1. The slide block 33 moves axially synchronously with the slider 37. The main shaft 34 provides rotational support for the rotating rod 35. The positioning rod 36 at the end of the rotating rod 35 cooperates with the positioning rod 24 of the vibration unit 2 and is inserted into the positioning holes 26 at both ends of the hard core mold 25 to complete the coaxial positioning of the hard core mold 25. The shock-absorbing sleeve 32 relieves the vibration transmitted to the bracket 31 when the rotating rod 35 rotates. The limiting arm 310 cooperates with the slide groove 39 to limit the movement direction of the slide block 33 and ensure positioning accuracy.

[0042] After positioning is completed, the vibration unit 2 starts to work. The ultrasonic generator in the housing 21 converts electrical energy into high-frequency electrical signals and transmits them to the ultrasonic transducer 22. The ultrasonic transducer 22 converts the electrical signals into high-frequency mechanical vibrations, which are transmitted to the vibration sleeve 23 via the amplitude transformer. The vibration sleeve 23 drives the hard core mold 25 to perform high-frequency micro-amplitude vibrations, forming a micron-level instantaneous gap. Then, the motor 42 drives the rotating shaft 43 to rotate, and transmits the power to the drive shaft 45 on the mounting plate 44 through the pulley 41 and the transmission belt 46. The drive gear 47 on the drive shaft 45 meshes with the sliding gear 48 on the rotating rod 35, driving the rotating rod 35 to rotate, and then driving the hard core mold 25 to rotate synchronously. The motor 51 drives the rotating shaft 52 to rotate, and transmits the power to the driven shaft 66 through the pulley 53 and the transmission belt 54, driving the rubber threaded roller 67 to rotate.

[0043] The hydraulic rod 68 extends and rotates the rocker arm 65 around the hinge point of the support plate 63, causing the rubber threaded roller 67 to come into close contact with the outer wall of the rubber tube 27. The rubber threaded roller 67 drives the rubber tube 27 to rotate through friction, forming a controllable speed difference with the hard core mold 25. The helical surface of the rubber threaded roller 67 generates a continuous axial force on the rubber tube 27. Finally, under the combined action of the micron-level instantaneous gap, the circumferential shear force of the differential rotation, and the axial force, the rubber tube 27 slowly slides along the axis of the hard core mold 25, and finally detaches from the hard core mold 25 and lands at the extension end of the rotating rod 35, completing the entire core removal operation. There is no rigid tension throughout the process, effectively avoiding damage to the inner wall of the rubber tube 27 and the problem of the hard core mold 25 getting stuck.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A rubber hose core stripping machine, comprising a bottom beam (1), characterized in that: A vibration unit (2) is installed on the bottom beam (1), and an adjustment unit (3) is also installed on the bottom beam (1). A side beam is integrally connected to the bottom beam (1), and a first drive unit (4) is installed on the side beam. A second drive unit (5) is provided on the first drive unit (4), and a guide unit (6) is connected to the second drive unit (5). The vibration unit (2) includes a housing (21), which is fixedly connected to one end of the bottom beam (1). An ultrasonic transducer (22) and an ultrasonic generator are installed inside the housing (21). An amplitude transformer is installed on the ultrasonic transducer (22). The amplitude rod extends through the outside of the housing (21) and is rotatably connected to the vibration sleeve (23). The inner wall of the vibration sleeve (23) is fixedly connected to the center of the positioning rod (24). The positioning rod (24) is provided with a hard core mold (25). Both ends of the hard core mold (25) are provided with positioning holes (26) that match the positioning rod (24). The hard core mold (25) is provided with a rubber tube (27). The positioning rod (24) is inserted into the positioning hole (26) at one end of the hard core mold (25). The end of the hard core mold (25) is inserted into the inner wall of the vibration sleeve (23).

2. The rubber hose hard core removal machine according to claim 1, characterized in that: The adjustment part (3) includes a bracket (31), which is fixedly connected to the bottom beam (1). A shock-absorbing sleeve (32) is fixedly connected to the bracket (31). A slide block (33) is slidably connected to the bottom beam (1). A main shaft (34) is rotatably connected inside the slide block (33). A rotating rod (35) is fixedly connected to one end of the main shaft (34). One end of the rotating rod (35) slides through the bracket (31) and the shock-absorbing sleeve (32) and extends toward the hard core mold (25). A positioning rod two (36) matching the positioning hole (26) is fixedly connected to the extended end of the rotating rod (35). The positioning rod two (36) is inserted into the positioning hole (26) at the other end of the hard core mold (25).

3. The rubber hose hard core removal machine according to claim 2, characterized in that: The bottom of the slide block (33) is fixedly connected to a slider (37), which is slidably connected between the inner walls of the bottom beam (1). A hydraulic rod (38) is provided on the slider (37), which is installed between the inner walls of the bottom beam (1). The inner end of the hydraulic rod (38) is fixedly connected to the slider (37). A sliding groove (39) is provided at the bottom of the slide block (33), and a limiting arm (310) that slides with the sliding groove (39) is fixedly connected to the other end of the bottom beam (1).

4. A rubber hose core stripping machine according to claim 3, characterized in that: The first drive unit (4) includes a control box (41), in which a differential controller and a motor (42) are installed. The control box (41) is fixedly connected to a side beam. The output shaft of the motor (42) is fixedly connected to a rotating shaft (43). The side wall of the bracket (31) is fixedly connected to a mounting plate (44). A drive shaft (45) is rotatably connected to the mounting plate (44). A pulley is fixedly sleeved on both the drive shaft (45) and the rotating shaft (43). A transmission belt (46) is connected between the pulleys.

5. A rubber hose core stripping machine according to claim 4, characterized in that: A drive gear (47) is fixedly sleeved on the drive shaft (45), and a sliding gear (48) is fixedly sleeved on the rotating rod (35). The drive gear (47) meshes with the sliding gear (48), and the sliding gear (48) is located between the bracket (31) and the main shaft (34).

6. A rubber hose core stripping machine according to claim 5, characterized in that: The guide part (6) includes a base plate (61), a baffle (62) is fixedly connected to the base plate (61), two support plates (63) and two limiting blocks (64) are symmetrically installed on the base plate (61), rocker arms (65) are hinged to the two support plates (63), driven shafts (66) are rotatably connected to the two rocker arms (65), rubber threaded rollers (67) are fixedly connected between the driven shafts (66), and hydraulic rods (68) are hinged between the two rocker arms (65) and the baffle (62).

7. A rubber hose core stripping machine according to claim 6, characterized in that: The second drive unit (5) includes a second motor (51), which is installed in the control box (41). The output shaft of the second motor (51) is fixedly connected to a second rotating shaft (52). The end of the second rotating shaft (52) is rotatably connected to an adjacent rocker arm (65). The second rotating shaft (52) and the driven shaft (66) on the same side are both fixedly fitted with pulleys (53). The pulleys (53) are connected by a transmission belt (54).

8. A rubber hose core stripping machine according to claim 7, characterized in that: The two rocker arms (65) abut against the two limiting blocks (64) respectively, and the rubber threaded roller (67) abuts against the rubber tube (27).

9. A rubber hose core stripping machine according to claim 7, characterized in that: The center of the rotating shaft (52) is aligned with the center of the hinge point of the rocker arm (65). A processing table (7) is installed on the bottom beam (1). The processing table (7) is fixedly connected to the base plate (61). Support legs (8) are installed at the bottom of the bottom beam (1), the machine box (21), the base plate (61), the side beam, and the processing table (7).

10. A method for removing the core of a rubber hose rigid core remover, as described in any one of claims 7-9, characterized in that, Includes the following steps: Step 1: The ultrasonic transducer (22) transmits the vibration to the vibration sleeve (23) through the amplitude transformer, causing the surface of the hard core mold (25) to generate high-frequency micro-amplitude vibration. The vibration wave generates a micron-level instantaneous gap between the hard core mold (25) and the inner rubber of the rubber tube (27). Step 2: Motor 1 (42) and Motor 2 (51) generate different speeds through a differential controller. Shaft 1 (43) drives the drive shaft (45) to rotate through transmission belt 1 (46), causing the drive gear (47) to drive the sliding gear (48) to rotate, thereby causing the rotating rod (35) to rotate. The hard core mold (25) rotates synchronously under the limiting action of positioning rod 1 (24) and positioning rod 2 (36). Step 3: The second rotating shaft (52) drives the driven shaft (66) to rotate through the second transmission belt (54), causing the rubber threaded roller (67) to rotate, and driving the rubber tube (27) to rotate through the contact friction force. The second hydraulic rod (68) provides support force. Step 4: There is a speed difference between motor 1 (42) and motor 2 (51). Combined with the instantaneous gap caused by the vibration wave, a speed difference is formed between the rubber tube (27) and the hard core mold (25). The helical surface of the rubber thread roller (67) will generate an axial component force on the rubber tube (27), causing the rubber tube (27) to slowly slide axially along the thread lead direction, and finally detach from the hard core mold (25) and land at the extension end of the rotating rod (35).

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