A continuous feeding device for anti-deformation tension of automobile rubber pipe

Abstract

This invention discloses a continuous feeding device for automotive hoses to prevent deformation and tension, comprising a frame, an unwinding and discharging assembly, a drive unit, an adjusting assembly, and a ranging and control unit. The frame includes a hollow column; the adjusting assembly includes a fixed pulley mounted on the top of the column, a vertically sliding movable pulley, and a counterweight. The counterweight is concealed within the hollow column cavity and connected to the movable pulley, and its weight is less than that of the movable pulley, applying downward flexible tension to the hose path using the difference in gravity. The ranging unit detects the vertical position of the movable pulley, and the control unit adjusts the drive unit's rotation speed in a closed loop based on the deviation between this position and a preset position, dynamically changing the hose length. This invention effectively absorbs speed fluctuations using the concealed counterweight structure and ranging feedback, preventing hose deformation under tension. The overall structure is compact and eliminates the safety hazards of lifting heavy objects, achieving stable feeding.

Description

Technical Field

[0001] This invention relates to the field of automotive hose processing and manufacturing equipment technology, specifically to an automotive hose anti-deformation tension continuous feeding device. Background Technology

[0002] In the continuous production line for subsequent processing of automotive hoses, the rolled hoses wound on the reel need to be continuously unwound and transported to the downstream processing equipment.

[0003] Most existing hose feeding devices use direct traction or a simple constant-speed unwinding structure powered by a motor. This traditional structure has a core technical flaw in actual industrial production: the lack of a storage buffer mechanism in the feeding path makes the hose extremely susceptible to tensile deformation and unable to achieve stable continuous feeding.

[0004] Specifically, automotive hoses are mostly made of elastomers such as rubber, which are relatively soft and easily stretched. Because existing equipment lacks a buffer structure for the hose, the unwinding end and the downstream processing end are in a rigid, synchronized state. In continuous production, even a slight fluctuation in the downstream traction speed, or a speed difference between upstream and downstream, directly translates into a sudden change in hose tension. This uncontrollable high tension can easily cause the hose to be instantly thinned and elongated (i.e., cross-sectional shrinkage deformation), severely compromising the dimensional accuracy of the final product. Simultaneously, without a reserve of hose as a buffer, the equipment cannot dynamically absorb these speed interferences, nor can it provide a transition allowance for the downstream when reel replacement is needed. This results in extremely unstable tension throughout the feeding process and very poor production continuity.

[0005] Therefore, there is an urgent need in this field for a new type of continuous feeding device that can absorb speed differences in real time and provide feeding margin by introducing a dynamic storage mechanism, so as to ensure that the hose is always in a low-tension and stable conveying state that prevents deformation. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a continuous feeding device for automotive hoses to prevent deformation and tension, solving the problem that the lack of a storage buffer mechanism in existing feeding paths leads to hoses being easily deformed under tension and unable to achieve stable and continuous feeding.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a continuous feeding device for preventing deformation and tension of automotive hoses, comprising: The frame includes a hollow column; an unwinding assembly disposed upstream of the frame; a discharge assembly disposed downstream of the frame; and a drive component that is pulsatorically connected to the unwinding assembly. An adjusting assembly is disposed between the unwinding assembly and the discharge assembly. The adjusting assembly includes a fixed pulley installed on the top of the hollow column, a movable pulley that slides in a restricted manner along the vertical direction of the hollow column, and a counterweight connected to the movable pulley. The counterweight is movably disposed in the inner cavity of the hollow column and connected to the movable pulley via a connecting cable, and the weight of the counterweight is less than the weight of the movable pulley. A storage tube path is formed between the fixed pulley and the movable pulley, and the vertical displacement of the movable pulley is used to change the length of the storage tube path. The ranging unit mounted on the frame is used to detect the vertical position of the movable pulley; The control unit is electrically connected to the ranging unit and the drive component, and the control unit adjusts the rotational speed of the drive component according to the deviation between the vertical position of the movable pulley and the preset position.

[0008] Through the above technical solution: This device introduces an adjustment component consisting of a hollow column, fixed pulley, movable pulley, and counterweight between the unwinding component and the discharge component. By concealing and movably inserting the counterweight within the cavity of the hollow column, the longitudinal space inside the column is fully utilized to make the overall equipment layout more compact, and the potential physical collisions and safety hazards caused by the exposed counterweight during lifting are completely eliminated. Simultaneously, by limiting the weight of the counterweight to less than the weight of the movable pulley, the difference in gravity between the two cleverly offsets most of the movable pulley's own weight, allowing the movable pulley to exert only a small and constant downward net force on the hose within the storage path. By adding flexible tension, the cross-sectional shrinkage and tensile deformation of the hose due to rigid traction are avoided from the physical source. Based on this mechanical gravity balancing, combined with the real-time detection of the vertical position of the movable pulley by the ranging unit, the control unit can adjust the unwinding speed of the drive component in a closed loop. By dynamically changing the length of the storage tube path by raising and lowering the movable pulley, the speed fluctuations and interference between upstream and downstream equipment are automatically absorbed. This synergistic cooperation between the physical buffer of the mechanical structure and the closed-loop control of electrical automation ensures that the automotive hose is always in a low-tension and stable conveying state to prevent deformation during continuous feeding, which greatly improves the yield and dimensional accuracy of the subsequent processing line.

[0009] Preferably, the frame is provided with at least two sets of gantry frames along its length; the unwinding assembly is rotatably mounted on the gantry frames.

[0010] The above technical solution, by setting at least two sets of gantry frames and corresponding unwinding components on the machine frame, enables the simultaneous storage of multiple rolls of hose. When the hose reel at the current workstation is about to run out, the operator can quickly pull out the end of the hose from the new reel on the spare gantry frame for end-to-end splicing, significantly reducing downtime for changing rolls and further ensuring the uninterrupted continuity and high efficiency of the downstream processing production line.

[0011] Preferably, a linear guide rail is vertically provided on the hollow column, and a slider that slides with the linear guide rail is connected to the movable pulley.

[0012] The above technical solution involves adding a linear guide rail and a slider to the hollow column, providing high-precision, low-friction rigid guidance for the vertical lifting of the movable pulley. On one hand, this structure effectively limits the lateral swaying and deviation of the movable pulley during high-speed operation and frequent adjustments, ensuring the hose's storage path remains precisely aligned and preventing the hose from derailing due to lateral tension. On the other hand, the linear guide rail significantly reduces the mechanical friction resistance of vertical movement, making the movable pulley more sensitive and smooth in response to changes in hose tension and upstream / downstream speed differences, thus ensuring stable tension adjustment.

[0013] Preferably, the ranging unit is a laser ranging sensor or an ultrasonic ranging sensor; the ranging unit is fixedly installed at the bottom of the frame and is vertically upward toward the movable pulley.

[0014] The above technical solution utilizes laser or ultrasonic ranging sensors to achieve non-contact, high-precision measurement of the position of the movable pulley. This avoids the mechanical friction and operational interference that traditional contact displacement sensors may cause to the movable pulley. By fixing the ranging unit to the bottom of the frame and probing vertically upwards, the absolute height data of the movable pulley can be accurately obtained, providing precise feedback to the control system. Furthermore, the fixed installation at the bottom effectively avoids false alarms caused by sensor movement, and the electrical wiring is simpler and easier to maintain.

[0015] Preferably, both the fixed pulley and the movable pulley have recessed guide grooves on their outer circumferential walls to prevent the glue supply tube from detaching.

[0016] The above technical solution involves recessed anti-detachment guide grooves on the outer circumference of both the fixed and movable pulleys. These recessed grooves fit snugly against the outer wall of the hose, allowing the hose to be embedded within them. This increases the contact area and effectively disperses radial pressure. The deep guide grooves provide stable lateral positioning during high-speed unwinding of the hose and frequent up-and-down adjustments of the movable pulley, effectively preventing slippage due to vibration, lateral force, or sudden tension changes. The design of multiple guide grooves meets the need for multiple turns of winding to increase the storage capacity of the hose.

[0017] Preferably, the gantry frame is provided with movable supports on both sides. Each movable support includes a lifting base that is vertically slidably disposed on the gantry frame and a support seat disposed on the top of the lifting base. A lifting cylinder is correspondingly disposed below the lifting base, and the output end of the lifting cylinder is connected to the lifting base for driving the lifting base and the support seat to move vertically and synchronously. The unwinding assembly includes a main shaft that passes through the center of the reel, and the two ends of the main shaft are rotatably mounted on the support seats on both sides.

[0018] The above technical solution involves installing movable supports on both sides of the gantry, and using a lifting cylinder to drive the lifting base and support seats to simultaneously raise and lower vertically, thus achieving a height adjustment structure for the unwinding assembly. This structure facilitates the assembly and positioning of reels of different specifications or diameters, improving the convenience and stability of reel changing operations. Simultaneously, the main shaft is rotatably mounted on the support seats on both sides, forming a symmetrical support structure for the reel, which enhances the force balance and rotational stability during the unwinding process.

[0019] Preferably, the support base is horizontally slidably disposed on the top of the lifting base; the support base is provided with a horizontal cylinder for driving the support base to move horizontally relative to the lifting base.

[0020] The above technical solution utilizes a horizontal cylinder to drive the support base for horizontal movement, enabling the reel to dynamically adjust its horizontal position along the axial direction after vertical lifting and positioning. This structure allows operators to precisely align the reel's discharge position with the preceding cable path according to actual working conditions, improving the straightness and smoothness of hose delivery.

[0021] Preferably, clearance slots are provided on both sides of the gantry frame; the driving component is a drive motor fixedly installed on the support base on one side; one end of the main shaft is coaxially connected to the output end of the drive motor through a coupling, and the coupling is movably inserted in the clearance slot.

[0022] The above technical solution involves fixing the drive motor to the support base and coaxially connecting it to the main shaft. This allows the drive motor to move vertically and horizontally synchronously with the support base and the main shaft, maintaining a stable transmission connection at any height and position. Simultaneously, clearance slots are provided on the gantry frame for the coupling to pass through, providing ample space for the follow-up displacement of the transmission components. This structure effectively avoids mechanical interference between moving parts during lifting and position adjustment, ensuring the rigidity and reliability of power transmission.

[0023] Preferably, the top of the gantry frame is provided with at least one set of guide wheels for guiding the hose.

[0024] The above technical solution involves installing at least one set of guide wheels at the top of the gantry, achieving high-altitude guidance and smooth unwinding of the hose. This structure cleverly utilizes the space above the gantry, effectively raising the initial routing height of the hose and preventing physical interference and entanglement between the hose and the lower movable support, cylinder mechanism, or heavy reel due to its own weight during unwinding. Simultaneously, the rolling contact of the guide wheels significantly reduces the drag resistance during hose unwinding, providing a low-friction transition for the hose to smoothly enter the dynamic storage path.

[0025] Preferably, the control unit stores a preset vertical distance, which includes a target reference distance and an allowable deviation, and forms an upper limit spacing threshold and a lower limit spacing threshold based on this. During the feeding process, when the control unit determines that the vertical distance detected by the ranging unit is greater than the upper limit spacing threshold, it controls the driving component to accelerate; when it determines that the vertical distance is less than the lower limit spacing threshold, it controls the driving component to decelerate.

[0026] The above technical solution constructs a precise dual-threshold closed-loop range control mechanism by pre-storing a preset distance containing the target reference distance and allowable deviation within the control unit, forming an upper and lower limit distance threshold. This mechanism sets a reasonable dynamic buffer tolerance range for the control system, effectively avoiding frequent start-stop and repeated oscillation adjustments of the drive motor caused by slight speed fluctuations in the production line or jitter in the ranging signal. This not only significantly improves the stability of the adaptive adjustment of the unwinding speed but also reduces the alternating load and wear of the mechanical transmission components, thereby effectively extending the service life of the equipment.

[0027] This invention provides a continuous feeding device for preventing deformation and tension of automotive hoses, which has the following beneficial effects: 1. This invention utilizes an adjustment assembly consisting of a fixed pulley, a movable pulley, and a counterweight at the hollow column of the frame. The counterweight is concealed and movably inserted into the inner cavity of the hollow column, making full use of the internal vertical space of the equipment to achieve a more compact overall layout. It also completely eliminates the physical collisions and safety hazards caused by the exposed heavy counterweight during lifting and lowering. Simultaneously, the weight of the counterweight is limited to be less than the weight of the movable pulley, using the gravity difference to offset most of the movable pulley's own weight. This ensures that the movable pulley applies only a small net weight force to the hose within the storage path, providing downward flexible tension. Combined with closed-loop ranging feedback from the ranging unit and control unit, the length of the storage hose is dynamically changed using speed differences, absorbing speed fluctuations between upstream and downstream equipment. This ensures that the hose is always in a low-tension, stable conveying state, preventing deformation. This physically avoids cross-sectional shrinkage deformation of the hose due to rigid pulling, improving the yield rate and dimensional accuracy of continuous production.

[0028] 2. This invention constructs a precise dual-threshold closed-loop interval control mechanism by pre-storing a preset distance containing the target reference distance and allowable deviation within the control unit, forming an upper limit spacing threshold and a lower limit spacing threshold. This mechanism sets a reasonable dynamic buffer tolerance range for the control system, effectively avoiding frequent start-stop and repeated oscillation adjustments of the drive motor caused by small speed fluctuations, and significantly improving the stability of adaptive adjustment of the unwinding speed. Combined with the low-friction rigid guide provided by the linear guide rail on the hollow column for the moving pulley, and the anti-detachment guide grooves on the outer circumference of the fixed pulley and the moving pulley, it not only ensures the dynamic lifting sensitivity during tension adjustment, but also effectively disperses the radial extrusion force, preventing local flattening deformation of the hose and derailment of the wiring.

[0029] 3. This invention achieves the function of storing multiple rolls of rubber hose on the same machine by setting at least two sets of gantry frames and corresponding unwinding units on the frame. When the current roll is exhausted, it can quickly switch to the spare roll for feeding, which greatly shortens the downtime for changing rolls and improves the efficiency of continuous production. At the same time, the lifting base and support seat are driven to lift and lower synchronously by the lifting cylinder, realizing the automated loading and unloading of heavy rolls, which significantly reduces the intensity of manual labor. Moreover, the drive motor is coaxially connected to the main shaft and moves synchronously with the support seat in multiple degrees of freedom. Combined with the avoidance groove structure on the gantry frame, it effectively avoids mechanical interference and can maintain a stable transmission state at any working height, which further improves the stability and reliability of the equipment operation. Attached Figure Description

[0030] Figure 1 This is a three-dimensional view of the overall structure of the automotive hose anti-deformation tension continuous feeding device of the present invention. Figure 2 This is a rear view of the overall structure of the automotive hose anti-deformation tension continuous feeding device of the present invention. Figure 3 for Figure 1 Enlarged view of a portion of area A in the middle; Figure 4 This is a block diagram of the closed-loop control logic of the control system of the present invention; Reference numerals: 10. Frame; 11. Hollow column; 111. Linear guide rail; 12. Gantry frame; 121. Clearance groove; 13. Guide wheel; 20. Unwinding assembly; 211. Main shaft; 30. Discharge assembly; 40. Drive component; 41. Drive motor; 42. Coupling; 50. Adjustment assembly; 51. Fixed pulley; 52. Moving pulley; 53. Counterweight; 54. Storage tube path; 55. Slider; 56. Anti-detachment guide groove; 57. Connecting cable; 60. Distance measuring unit; 70. Control unit; 80. Movable support; 81. Lifting base; 82. Support base; 83. Lifting cylinder; 84. Horizontal cylinder. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the scope of protection of the invention. In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "top," and "bottom," etc., indicate orientations or positional relationships based on conventional engineering drawings, or the orientations or positional relationships commonly used when the product is in use. These are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0032] This invention provides a continuous feeding device for preventing deformation tension in automotive hoses. It is mainly used in the front-end feeding stage of automotive flexible rubber hose production lines in subsequent processing (such as cutting, surface braiding, heat shrink tubing splicing, etc.). By adjusting the length of the storage tube through the adjustment component to absorb speed fluctuations, and in conjunction with the control unit to adjust the unwinding speed in real time based on distance feedback, the device achieves automated feeding of rolled hoses, constant tension, and dynamic adaptive adjustment of the speed difference between upstream and downstream by combining mechanical physical buffering and electrical automation closed-loop control. It solves the technical defects of traditional equipment that easily lead to shrinkage and deformation of the hose cross-section and stretching during unwinding, which seriously affect the dimensional accuracy of the product.

[0033] Reference Figure 1 , Figure 2 As shown, an anti-deformation tension continuous feeding device for automotive hoses includes: a frame 10, an unwinding assembly 20, a discharge assembly 30, a drive component 40, an adjustment assembly 50, a distance measuring unit 60, and a control unit 70.

[0034] The unwinding assembly 20 is rotatably mounted upstream of the frame 10 for placing the rolled rubber hose; the discharge assembly 30 is located downstream of the frame 10 for conveying the rubber hose to downstream equipment; the driving component 40 is connected to the unwinding assembly 20 for driving the unwinding assembly 20 to rotate and release the rubber hose; the adjusting assembly 50 is located between the unwinding assembly 20 and the discharge assembly 30. The frame 10 includes a hollow column 11, and the adjusting assembly 50 includes a fixed pulley 51 mounted on the top of the hollow column 11, a movable pulley 52 that slides in a restricted manner along the vertical direction of the hollow column 11, and a counterweight 53 connected to the movable pulley 52. The counterweight 53 is movably disposed within the cavity of the hollow column 11 and connected to the movable pulley 52 via a connecting cable 57, and the weight of the counterweight 53 is less than the weight of the movable pulley 52; a storage path 54 is formed between the fixed pulley 51 and the movable pulley 52, through which the glue supply tube passes, and the vertical displacement of the movable pulley 52 is used to change the length of the storage path 54; a ranging unit 60 is disposed on the frame 10 and is used to detect the vertical position of the movable pulley 52; a control unit 70 is electrically connected to the ranging unit 60 and the drive component 40 respectively, constructing an automated electronic control closed-loop system. The control unit 70 adjusts the rotational speed of the drive component 40 according to the deviation between the vertical position of the movable pulley 52 and a preset position.

[0035] Reference Figures 2 to 4 As shown, the frame 10 serves as the physical support platform for the entire automated equipment. The frame 10 includes hollow columns 11 and at least two sets of gantry frames 12, arranged sequentially along the length of the frame 10. The gantry frames 12 provide workstations for the unwinding assembly 20. The unwinding assembly 20 is rotatably mounted on the gantry frames 12. The hollow columns 11 are vertically positioned downstream of the gantry frames 12, with fixed pulleys 51 mounted on the top of the hollow columns 11 and movable pulleys 52 vertically sliding on the hollow columns 11.

[0036] To smoothly guide the lifting and lowering of the movable pulley 52, a linear guide rail 111 is vertically mounted on the hollow column 11, and a slider 55 is mounted on the movable pulley 52 that slides in cooperation with the linear guide rail 111. The cooperation between the linear guide rail 111 and the slider 55 restricts the lateral sway of the movable pulley 52 and provides a vertical sliding trajectory for the movable pulley 52. ​​The adjusting assembly 50 also includes a connecting cable 57, and a counterweight 53 is movably inserted into the inner cavity of the hollow column 11, utilizing the internal space of the hollow column 11. One end of the connecting cable 57 is connected to the movable pulley 52, and the other end is connected to the counterweight 53 via the top of the hollow column 11. The weight of the counterweight 53 is less than the weight of the movable pulley 52, so that after the pulling force of the counterweight 53 offsets part of its own weight, the movable pulley 52 maintains a downward gravity to tighten the rubber tube in the storage path 54.

[0037] In terms of mechanical action, the movable pulley 52 tends to move downwards under its own weight G1, while the counterweight 53 applies an upward pulling force G2 to the movable pulley 52 through the connecting cable 57. Since the weight of the counterweight 53 is less than the weight of the movable pulley 52, i.e., G1 > G2, the movable pulley 52 exerts a downward force of G1 - G2 on the hose within the storage path 54 in a static equilibrium state. This force is shared by the hoses passing around both sides of the movable pulley 52. ​​In a single-turn loop structure with the movable pulley 52 in equilibrium, according to the principle of force balance, we have: 2T = G1 - G2, where T is the tension on one side of the hose. Therefore, we know that: T = (G1 - G2) / 2. By reasonably selecting the weight of the counterweight 53, keeping G1 - G2 within a small range, the hose tension T can be maintained within a low-tension safety range. This structure keeps the hose in a flexible, buffered tension state rather than a rigid traction state, thus avoiding the risk of cross-sectional shrinkage deformation caused by excessive stretching of the hose.

[0038] Based on the above structure, the storage path 54 is formed as follows: After the hose is output from the unwinding assembly 20, it first passes through the guide wheel 13 set at the top of the gantry 12 for directional adjustment, then winds downwards around the outer circumference of the fixed pulley 51, then winds downwards around the outer circumference of the movable pulley 52, and then returns upwards to the fixed pulley 51 to form a multi-turn winding path. Finally, it is led out from the end of the storage path 54 and enters the discharge assembly 30. The guide wheel 13 guides the unwound hose upwards, so that the hose enters the storage path 54 smoothly at a higher position, avoiding contact and friction between the hose and the structural components below.

[0039] Through the aforementioned winding method, a storage tube path 54 with a certain length margin is formed between the fixed pulley 51 and the movable pulley 52. ​​Since the movable pulley 52 can slide up and down along the linear guide rail 111, when the movable pulley 52 moves downwards, the total length of the storage tube path 54 increases; when the movable pulley 52 moves upwards, the total length of the storage tube path 54 decreases. According to the basic geometric relationship of pulley winding, the vertical displacement Δh of the movable pulley 52 will cause a change in the length of the storage tube path 54 of approximately 2Δh (in the case of a single-turn winding), while in a multi-turn winding structure, the change increases proportionally to the number of turns. Therefore, by controlling the lifting and lowering amplitude of the movable pulley 52, a larger storage tube adjustment stroke can be obtained within a relatively small structural space.

[0040] To ensure the hose remains stably flush with the outer circumference of the pulleys during its winding process, multiple anti-detachment guide grooves 56 are recessed on the outer circumference of both the fixed pulley 51 and the movable pulley 52. ​​The anti-detachment guide grooves 56 are arc-shaped grooves that match the outer diameter of the hose, allowing the hose to be embedded within them to form a surface contact structure. This structure not only increases the contact area and disperses localized pressure, but also effectively prevents the hose from laterally jumping off when the movable pulley 52 floats up and down at high speed or when the hose's running speed changes, by using the groove walls for lateral restraint.

[0041] The ranging unit 60 is a laser ranging sensor or an ultrasonic ranging sensor, which non-contactly detects the vertical distance H between the bottom of the movable pulley 52 and the ranging unit 60 in real time. The bottom-view detection avoids obstruction by debris falling during the conveying of the hose above, and the ranging unit 60 sends the real-time vertical distance H signal back to the control unit 70.

[0042] The control unit 70 has internal comparison logic and control decision functions, and pre-stores a preset vertical distance. The preset vertical distance includes the target reference distance H0 and the allowable deviation ΔH, and based on this, it calculates the upper limit spacing threshold H0+ΔH and the lower limit spacing threshold H0-ΔH. During normal operation, the movable pulley 52 remains at the reference position corresponding to the target reference distance H0. The discharge assembly 30 conveys the hose downstream at a constant traction speed, tightening the hose in the storage path 54. The movable pulley 52 overcomes its own weight and rises due to the upward pull, causing the vertical distance detected by the ranging unit 60 to increase. When the control unit 70 receives this vertical distance and determines that it is greater than the upper limit spacing threshold, it determines that the current unwinding speed is lagging and immediately sends an acceleration command to the drive motor 41 to increase the speed of the drive motor 41.

[0043] Conversely, if the unwinding speed instantaneously exceeds the traction speed of the discharge assembly 30, excess tubing accumulates in the storage path 54. The movable pulley 52 moves downwards under its net weight, causing a decrease in the vertical distance detected by the ranging unit 60. When the control unit 70 receives this vertical distance and determines that it is less than the lower limit distance threshold, it sends a deceleration command to the drive motor 41 to reduce the speed of the drive motor 41.

[0044] Reference Figure 3 As shown, regarding the unwinding assembly 20, movable supports 80 are provided on both sides of the gantry frame 12. Each movable support 80 includes a lifting base 81 vertically slidably mounted on the gantry frame 12, and a support seat 82 mounted on top of the lifting base 81. A lifting cylinder 83 is correspondingly located below the lifting base 81. The output end of the lifting cylinder 83 is connected to the lifting base 81, used to drive the support seat 82 and the lifting base 81 to move vertically and synchronously. The unwinding assembly 20 includes a main shaft 211 passing through the center of the reel. Both ends of the main shaft 211 are rotatably mounted on the support seats 82 on both sides. When changing the reel, activating the lifting cylinder 83 can smoothly lift the unwinding assembly 20 to the working height or lower it for unloading, achieving automated double-end loading of heavy-duty reels. The support seat 82 is horizontally slidably mounted on top of the lifting base 81. A horizontal cylinder 84 is provided on the support base 82. The horizontal cylinder 84 is connected to the support base 82 and is used to drive the support base 82 to move horizontally relative to the lifting base 81.

[0045] The gantry frame 12 has clearance slots 121 on both sides. The drive component 40 is a drive motor 41 fixedly mounted on one of the support bases 82. One end of the main shaft 211 is coaxially connected to the output end of the drive motor 41 via a coupling 42. The coupling 42 is movably inserted into the clearance slot 121. This structure ensures that the drive motor 41 moves vertically and horizontally synchronously with the support base 82, maintaining a stable power transmission state at any position. The clearance slot 121 provides space for the multi-degree-of-freedom displacement of the transmission components, avoiding mechanical interference.

[0046] Working principle Reference Figures 1 to 4 As shown, the operator pushes the reel fully loaded with hose into the gantry frame 12, through which the main shaft at the center of the reel is threaded. The lifting cylinder 83 is activated, driving the lifting base 81 and support seat 82 to rise vertically simultaneously, smoothly lifting the main shaft 211 and reel to the working height. Then, the horizontal cylinder 84 is activated, driving the support seat 82 to move horizontally, aligning the hose exit point with the top routing path. After positioning, the hose end is manually pulled, passing sequentially around the guide wheel 13 and the fixed pulley 51, downwards into the anti-detachment guide groove 56 of the movable pulley 52, then upwards back to the fixed pulley 51 to form the hose storage path 54, finally leading out to the discharge assembly 30, completing the initial threading.

[0047] After threading, the movable pulley 52 is subjected to the combined action of its own weight G1 and the tension G2 of the counterweight 53 in a static state. Since G1 is greater than G2, the movable pulley 52 presses down on the hose with a constant net downward weight. This net weight is shared by the hose on both sides of the pulley, causing a constant tension T of (G1-G2) / 2 to be generated inside the hose. This purely mechanical gravity balancing mechanism ensures that the hose remains in a low-tension taut state throughout the entire subsequent conveying process, eliminating the risk of cross-sectional shrinkage deformation of the hose due to rigid traction from a physical source.

[0048] When the equipment starts, the discharge assembly 30 conveys the hose downstream at a constant linear speed, and the drive unit 40 (i.e., drive motor 41) drives the main shaft 211 to unwind. During continuous unwinding, the control unit 70 judges based on the received feedback real-time vertical distance H signal: when H > upper limit spacing threshold, the current state is determined to be slow unwinding, and the control unit 70 sends an acceleration command to the drive unit 40; conversely, when H < lower limit spacing threshold, the current state is determined to be fast unwinding, and the control unit 70 sends a deceleration command to the drive unit 40. After receiving the command, the drive unit 40 adjusts the unwinding speed (compensating for the reduced diameter), thereby causing the movable pulley 52 to change its vertical position (rise / fall), so that the unwinding linear speed is rematched with the downstream, completing the closed-loop regulation.

[0049] When the hose reel at the current workstation is about to run out, the operator uses the pre-stored hose buffer in the storage path 54 to pull out the end of the hose from the new reel on the backup gantry 12. With the discharge assembly 30 maintaining constant speed traction and continuous operation, the splicing of the first and last hoses is completed, achieving uninterrupted continuous material supply.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous feeding device for preventing deformation and tension of automotive hoses, characterized in that, include: The frame (10) includes a hollow column (11); an unwinding assembly (20) disposed upstream of the frame (10); a discharge assembly (30) disposed downstream of the frame (10); and a drive component (40) that is drively connected to the unwinding assembly (20). An adjusting component (50) is disposed between the unwinding assembly (20) and the discharge assembly (30). The adjusting component (50) includes a fixed pulley (51) installed on the top of the hollow column (11), a movable pulley (52) that slides in a restricted manner along the vertical direction of the hollow column (11), and a counterweight (53) connected to the movable pulley (52). The counterweight (53) is movably disposed in the inner cavity of the hollow column (11) and connected to the movable pulley (52) via a connecting cable (57). The weight of the counterweight (53) is less than the weight of the movable pulley (52). A storage tube path (54) is formed between the fixed pulley (51) and the movable pulley (52) through which the glue supply tube passes. The vertical displacement of the movable pulley (52) is used to change the length of the storage tube path (54). The ranging unit (60) mounted on the frame (10) is used to detect the vertical position of the movable pulley (52); And a control unit (70) electrically connected to the ranging unit (60) and the drive unit (40), wherein the control unit (70) adjusts the rotational speed of the drive unit (40) according to the deviation between the vertical position of the movable pulley (52) and the preset position.

2. The automotive hose anti-deformation tension continuous feeding device according to claim 1, characterized in that, The frame (10) is provided with at least two sets of gantry frames (12) along its length; the unwinding assembly (20) is rotatably mounted on the gantry frame (12).

3. The automotive hose anti-deformation tension continuous feeding device according to claim 1, characterized in that, The hollow column (11) is vertically provided with a linear guide rail (111), and the movable pulley (52) is connected with a slider (55) that slides in cooperation with the linear guide rail (111).

4. The automotive hose anti-deformation tension continuous feeding device according to claim 1, characterized in that, The ranging unit (60) is a laser ranging sensor or an ultrasonic ranging sensor; the ranging unit (60) is fixedly installed at the bottom of the frame (10) and is set vertically upward toward the movable pulley (52).

5. The automotive hose anti-deformation tension continuous feeding device according to claim 1, characterized in that, Both the fixed pulley (51) and the movable pulley (52) have recessed outer walls with multiple anti-detachment guide grooves (56) for embedding the rubber tube.

6. The automotive hose anti-deformation tension continuous feeding device according to claim 2, characterized in that, The gantry (12) is provided with movable supports (80) on both sides. The movable supports (80) include a lifting base (81) that is vertically slidably disposed on the gantry (12) and a support seat (82) disposed on the top of the lifting base (81). A lifting cylinder (83) is provided below the lifting base (81). The output end of the lifting cylinder (83) is connected to the lifting base (81) and is used to drive the lifting base (81) and the support seat (82) to rise and fall vertically synchronously. The unwinding assembly (20) includes a main shaft (211) that passes through the center of the reel. The two ends of the main shaft (211) are rotatably mounted on the support seats (82) on both sides.

7. The automotive hose anti-deformation tension continuous feeding device according to claim 6, characterized in that, The support base (82) is horizontally slidably disposed on the top of the lifting base (81); the support base (82) is provided with a horizontal cylinder (84) for driving the support base (82) to move horizontally relative to the lifting base (81).

8. The automotive hose anti-deformation tension continuous feeding device according to claim 6, characterized in that, The gantry (12) has clearance slots (121) on both sides; the drive component (40) is a drive motor (41) fixedly installed on the support base (82) on one side; one end of the main shaft (211) is coaxially connected to the output end of the drive motor (41) through a coupling (42), and the coupling (42) is movably inserted in the clearance slot (121).

9. The automotive hose anti-deformation tension continuous feeding device according to claim 2, characterized in that, The top of the gantry (12) is provided with at least one set of guide wheels (13) for guiding the hose.

10. The automotive hose anti-deformation tension continuous feeding device according to claim 1, characterized in that, The control unit (70) has a preset vertical distance stored in it. The preset vertical distance includes the target reference distance and the allowable deviation, and an upper limit spacing threshold and a lower limit spacing threshold are formed based on this. During the feeding process, when the control unit (70) determines that the vertical distance detected by the ranging unit (60) is greater than the upper limit spacing threshold, it controls the driving component (40) to accelerate. When it determines that the vertical distance is less than the lower limit spacing threshold, it controls the driving component (40) to decelerate.

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