Long and thin coil pipe machining equipment
By optimizing the discharge slope angle and high-frequency vibration combined with the material separation mechanism, the problems of lag caused by easy bending, winding and friction in the elongated coil pipe processing equipment are solved, and efficient and accurate automatic processing is achieved.
Patent Information
- Application Number
- CN202510707193.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-29
- Publication Date
- 2025-07-08
AI Technical Summary
During the loading process, existing slender coil pipe processing equipment has problems such as easy bending, winding, inclination, high friction, and lag and surface scratches, resulting in low efficiency and high scrap rate.
The inclination angle of the discharge slope is optimized to 15°~25°, combined with high-frequency vibrator and material distribution mechanism, through the cooperation of the press block and photoelectric switch, the pipe is automatically unwrapped and single-row slide, and the pressure is dynamically shared by the material distribution plate to avoid the lag and pipe damage caused by gravity accumulation.
The pipe unwrap efficiency is improved by 90%, the pipe surface damage rate is reduced, the single material separation success rate is improved, and the stability and efficiency of the pipe bending process is ensured.
Smart Images
Figure CN120268918A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of slender tube bending, and in particular to a slender coil tube processing device. Background Art
[0002] The present invention relates to the technical field of pipe processing equipment, specifically to a fully automatic processing equipment suitable for slender coiled pipes, especially for straight pipes with a diameter of φ6mm to φ12mm and a length of 2 meters to 4 meters, realizing an integrated processing process of automatic loading, precise pipe bending and automatic unloading. The equipment is widely used in the bending and forming of precision slender pipes in the fields of medical equipment, automotive parts, aerospace, etc., such as medical infusion catheters, automotive brake oil pipes, precision wiring harness sleeves, etc. In the processing of slender coiled pipes, traditional equipment faces the following core technical difficulties: 1. Slender pipes (length of more than 2 meters, diameter ≤12mm) have a large aspect ratio (≥166:1) and insufficient rigidity, and are prone to bending, winding or tilting when stacked. Traditional loading racks mostly use flat stacking or simple slope unloading, lacking targeted sorting and material distribution mechanisms, resulting in the mutual squeezing of pipes to form a "material arch" and blocking the unloading channel; a single pipe is warped or offset and cannot accurately enter the feeding device, requiring frequent manual intervention and sorting, which is inefficient (manual sorting accounts for more than 30% of the time). 2. When the traditional loading rack accommodates a large number of pipes (such as 150 φ6mm pipes at a time), the axial pressure on a single pipe at the bottom of the slope can reach more than 200N (according to static calculations, the pressure increases exponentially with the stacking height). At this time, the lifting device needs to overcome the huge friction force to lift the bottom pipe, which is prone to "lifting material jamming" or "pipe flying" (the incidence of flying is as high as 25%); rigid lifting material contact (such as direct metal collision) causes scratches or deformation on the surface of the pipe, and the scrap rate is as high as 15%. 3. When the slender tube is discharged on the slope, due to the gravity component and its own elasticity, the tail is easy to lift up and hook with the adjacent pipe, forming a "chain jam", resulting in continuous feeding interruption. Although the existing device has improved the above situation to a certain extent, there are still certain shortcomings, so there is an urgent need for a device to solve the above technical problems. Summary of the invention
[0003] 1. Technical issues to be resolved
[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a processing device for slender coiled pipes, which solves the problems existing in the prior art. The inclination angle θ of the discharging ramp is optimized to 15° - 25°, and it is combined with the high-frequency vibration of the bottom vibrator (frequency 50Hz, amplitude 0.5mm), so that the pipes are automatically dispersed during vibration and slide down the ramp in a single row, and the unwinding efficiency is increased by 90%. The evenly distributed pressing blocks press the pipes with a pressure of 0.5 - 1kg to offset the elastic upward warping force (the measured upward warping angle drops from 30° to below 5°). The feeding mechanism is ingeniously utilized to avoid the failure of pushing the materials due to the accumulation of gravity and the damage of the pipes. The feeding mechanism divides the pipes into an upper stacking area and a lower sequential arrangement area. The pressure of the upper pipe fittings is borne by the feeding mechanism, and the lower sequential arrangement area does not bear the pressure of the upper part. At this time, the friction force that the pushing mechanism needs to overcome each time is constant and will not change due to the number of pipes in the upper stacking area, thus greatly avoiding "jamming of pushing materials" and "flying of pipes".
[0005] (II) Technical Solution
[0006] To achieve the above object, the present invention provides the following technical solution: A processing device for slender coiled pipes, including a feeding rack, a roller feeding device is fixed on the left side of the feeding rack, a pipe bender is fixed on the left side of the roller feeding device, a front-end positioning device is fixed on the left side of the pipe bender, and a discharging device is fixed on the upper end of the front-end positioning device;
[0007] The feeding rack includes a feeding rack body, a discharging ramp is fixed on the upper end of the feeding rack body, a vibrator is arranged at the lower end of the discharging ramp, a pressing device is arranged at the upper end of the discharging ramp, a second photoelectric switch is fixed on the side of the pressing device, a feeding device is fixed on the upper end of the pressing device, a first photoelectric switch is fixed on the side of the pressing device, a third photoelectric switch is fixed at the end of the pressing device, a pushing device is fixed on the side of the feeding rack body, pressing blocks are fixed on the pressing device, a material blocking block is fixed beside the pressing blocks, and a supporting roller is fixed beside the material blocking block; The feeding rack body is used to fix the discharging ramp, and the discharging ramp provides an inclined track for the pipes to slide down. It is combined with the vibrator to realize the automatic unwinding of the pipes, avoid stacking and winding, and the unwinding efficiency is increased by 90%. The vibrator is installed on the back of the discharging ramp to generate high-frequency vibration (frequency 50Hz, amplitude 0.5mm). The installation quantity of the vibrator depends on the inclination angle of the discharging ramp. The larger the angle, the fewer the number of vibrators required. However, the vibrators need to be symmetrically installed in the axial direction of the pipes to ensure that the front and rear ends of the pipes receive the same vibration, preventing inclination due to different frictional forces at the front and rear during falling. The second photoelectric switch, the arrangement position of the second photoelectric switch is at the upper end of the feeding device, used for material shortage prompt, so as to ensure that there are always pipes in the feeding device. The pressing device and the vibrator are arranged correspondingly. As Figure 2 shown, a fixed pipe is arranged at the upper end of the vibrator, and the distance between the fixed pipe and the pressing device is slightly smaller than the pipe diameter, applying a pressure of 0.5 - 1kg to the pipes. Such a setting has the following advantages:
[0008] 1. Vibration coupling under rigid constraint
[0009] The distance between the fixed pipe and the blank holding device is slightly smaller than the diameter of the pipe, forming an interference fit clamping on the pipe. When the vibrator works, this rigid constraint can directly transfer the vibration energy to the pipe through the fixed pipe, reducing vibration attenuation and energy dissipation caused by gaps.
[0010] 2. Resonance optimization under pressure assistance
[0011] A light pressure of 0.5 - 1 kg makes the pipe in the critical state of elastic deformation, neither inhibiting vibration due to rigid clamping nor causing disorder of the vibration mode due to looseness. In this state, the pipe is easy to match the resonance frequency with the vibrator, improving the vibration energy efficiency.
[0012] 3. The clearance design of the interference fit (slightly smaller than the pipe diameter) allows the pipe to have a small elastic deformation space during vibration.
[0013] The above advantages can ensure that when the pipe vibrates, the falling rates of the front and rear are kept as consistent as possible, preventing the rear end from tilting up when the front end falls first.
[0014] The material separating device clamps the pipe and cooperates with the first photoelectric switch. The first photoelectric switch is located at the lower end of the material separating device. When the first photoelectric switch detects no material, the material separating cylinder in the blank holding device lifts up, and the material on the upper slope slides down. When the first photoelectric switch detects material, the blank holding device presses the pipe. So the lowermost pipe is at most extruded by the materials between the blank holding device and the lowermost pipe, and at least extruded by the materials between the first photoelectric switch and the lowermost pipe. Such a setting solves the problem of material jacking caused by gravity accumulation through dynamic pressure sharing, and can ensure that the lowermost pipe is always pressed by the upper pipes, preventing warping. It can prevent that when the jacking device jacks up, it is necessary to overcome a huge frictional force to jack up the bottom pipe, preventing the pipe from being jacked away. The third photoelectric switch is used to detect whether there is a pipe on the material supporting roller. If there is no pipe, the jacking device jacks up and jacks the pipe onto the material supporting roller. There is a pressing block at the front end of each blank holding device. The position can be adjusted front and back to ensure that only one straight pipe is jacked up when the jacking device jacks up the material. Multiple groups of material blocking blocks are set to ensure that the gap between the material blocking blocks and the pressing blocks is larger than the diameter of one pipe but smaller than the diameter of two pipes, ensuring that the jacking device can only jack up one pipe each time.
[0015] Preferably, the material distributing device includes a material distributing support fixed to the upper end of the material pressing device. A material distributing cylinder is fixed to the lower end of the material distributing support, and a material distributing plate is fixed to the lower end of the material distributing cylinder. The material distributing support fixes the material distributing cylinder and supports the material distributing mechanism. The material distributing cylinder drives the material distributing plate to move up and down. The material distributing plate is used to press the pipe materials to ensure that the pressure of the pipe materials above will not be transmitted to the pipe materials below, avoiding the jamming or bouncing of the material pushing due to the accumulation of gravity, and significantly improving the success rate of material distribution.
[0016] Preferably, the material pushing device includes a cylinder frame. A cylinder is fixed to the lower end of the cylinder frame. A buffer rubber is arranged on the cylinder. A guide rod is installed inside the cylinder frame. A contact block is fixed to the upper end of the guide rod. A guide block fixing frame is fixed to the upper end of the contact block, and a guide block is fixed to the upper end of the guide block fixing frame. The cylinder frame is fixed to the side of the feeding frame and serves as the basic support structure of the material pushing device. It is fixed to the side of the feeding frame, provides an installation carrier for components such as the cylinder and the guide rod, and bears the reaction force during the material pushing process. The cylinder is the core power source, and drives the contact block to jack up the guide block upward through the telescopic movement of the piston rod, jacking up the pipe materials on the discharging slope. The buffer rubber is installed at the top end of the piston rod of the cylinder, between the cylinder and the contact block, and is used to absorb the impact energy at the moment of material pushing, preventing the rapid rise of the guide block fixing frame caused by hard contact and resulting in the bouncing of the pipe materials. The guide rod is vertically installed inside the cylinder frame, passes through the contact block and is fixed to the guide block fixing frame, providing linear guidance for the material pushing action and preventing the contact block from laterally shifting or tilting during the material pushing process. Causing the inclination or offset of the guide block, the guide block fixing frame is fixed to the upper end of the contact block and is used to install the guide block. The guide block is inclined outward, and the tip of the higher side is located on the inner side of the gap between the material blocking block and the material pressing block, and is used to make the pipe material slide down after jacking up one pipe material and slide onto the supporting rollers.
[0017] Preferably, the roller feeding device includes a guide rail fixed on the side of the loading rack, a feeding fixing plate is fixed on the upper end of the guide rail, an adjusting rack is fixed on the upper end of the feeding fixing plate, an adjusting rail is fixed on the side of the adjusting rack, an adjustable cylinder seat is fixed on the side of the adjusting rack, an adjustable stroke cylinder is fixed on the inner side of the adjustable cylinder seat, a spring is fixed on the lower end of the adjustable stroke cylinder, a connecting block is fixed on the lower end of the spring, a passive wheel frame is fixed in the connecting block, a passive wheel is installed on the passive wheel frame, a reducer is fixed on the side of the adjusting rack, a driving wheel is connected to one side of the reducer, a servo motor is fixed on the other side of the reducer, and a driving wheel is connected to the upper side of the feeding fixing plate. A push rack is fixed on the surface, a horizontal push cylinder is fixed on the side of the push rack, a vertical push cylinder is fixed on the side of the horizontal push cylinder, a push block is fixed on the side of the vertical push cylinder, a first conical guide sleeve is fixed on the front end of the feed fixing plate, and a clamp is fixed on the side of the adjustment rack; the guide rail is fixed on the side of the loading rack as the basic support structure of the roller feeding device, providing a horizontal guide track for the feed fixing plate. The locking structure and motion servo can be installed according to the situation to adjust the position of the roller feeding device. The feed fixing plate carries the core components such as the adjustment rack and the push rack to form the main installation platform of the device. The adjustment rack is installed with components such as the passive wheel rack and the adjustable cylinder seat, and the vertical position adjustment of the passive wheel is achieved by adjusting the track. The adjustable cylinder seat fixes the adjustable stroke cylinder and promotes the vertical movement of the passive wheel by adjusting the track. The adjustment track cooperates with the passive wheel frame. The passive wheel frame is provided with a slider that can move along the adjustment track. The adjustable stroke cylinder drives the passive wheel frame up and down through air pressure. By adjusting the cylinder stroke, a flexible clamping force of 0.5 to 1 kg is provided to adapt to slender tubes of different rigidity. The spring and the clamping jaw work together to give the pipe a buffer to prevent the tail of the slender tube from swinging and thus escaping from the roller groove to affect the feeding. The spring gives the slender tube a buffer. After the clamping jaw is closed, there is still a gap between the pipe and the clamping jaw. The pipe can only move axially to prevent the tail of the pipe from swinging when moving forward. The connecting block is used to install the passive wheel frame. The passive wheel frame is installed with the passive wheel to support the passive wheel to realize up and down movement, forming a clamping roller with the active wheel, and driving the pipe forward through friction. Its rigid structure ensures that it will not deform during long-term operation. This conveying method has the following advantages:
[0018] Stable conveying: Double-wheel clamping prevents the tube from slipping, especially suitable for slender tubes with smooth surfaces (such as medical catheters).
[0019] Guiding function: The curvature of the wheel surface is adapted to the diameter of the pipe, guiding the pipe to move in a straight line along the central axis, reducing bending deviation, and at the same time timely controlling the slight swing at the tail of the pipe body to prevent the swing from increasing and causing the pipe to leave the wheel surface.
[0020] The servo motor is used as the power source to drive the driving wheel to rotate through the reducer. The reducer is used to reduce the speed of the servo motor, amplify the torque, and drive the driving wheel to rotate smoothly. The driving wheel rotates under the drive of the reducer, and the friction force drives the pipe to move toward the pipe bending machine. The straight pipe product falls into the driving wheel groove. After the photoelectric switch detects that there is material, the clamp closes. After closing, there is still a gap between the pipe and the clamp, and the pipe can only move axially (the purpose of setting this clamp is to prevent the tail of the slender pipe from swinging during feeding and thus escaping from the roller groove to affect feeding). The vertical push cylinder is lifted up, and then the horizontal push cylinder retracts the push block to push the front end of the straight pipe to position. After positioning, the horizontal push cylinder extends, and the vertical push cylinder retracts to avoid the straight pipe from feeding forward. Finally, the adjustable stroke cylinder extends to press the passive wheel against the driving wheel, and the driving wheel rotates to realize forward feeding. The front end of the roller feeding device is equipped with a first conical guide sleeve to ensure that the pipe can accurately enter the pipe bending machine.
[0021] Preferably, the front-end positioning device comprises a positioning fixing plate fixed at the front end of the pipe bending machine, a positioning slider is fixed on the side of the positioning fixing plate, a positioning slide rail is installed on the side of the positioning slider, a positioning connecting plate is fixed on the side of the positioning slide rail, a positioning cylinder is fixed on the side of the positioning fixing plate, and a floating joint is fixed on the upper end of the positioning cylinder; the positioning fixing plate serves as the basic frame of the front-end positioning device, fixes the positioning slider, the positioning cylinder and other core components, and provides rigid support. The positioning slider is connected to the positioning connecting plate, provides high-precision linear guidance along the positioning slide rail, and the positioning slide rail performs linear reciprocating motion to transmit the driving force of the positioning cylinder. Ensure the stability and repeatability of the movement of the positioning connecting plate. The positioning connecting plate, as an actuator, directly contacts the front end of the pipe and transmits the positioning force. After the positioning is completed, the positioning cylinder provides a positioning driving force to drive the positioning connecting plate to move downward, and the induction block falls. After the material clamp clamps the pipe, the active wheel and the passive wheel of the roller feeding device are opened, and the Y axis of the pipe bending machine feeds and bends the pipe until the pipe bending is completed. The floating joint connects the cylinder piston rod and the positioning connecting plate.
[0022] Preferably, a nylon transition block is fixed to the side of the upper end of the positioning connecting plate, and a sensing block is fixed to the outside of the nylon fixing block; the sensing block is made of metal, and the metal sensing block can resist the tube body to prevent the metal tube body from cutting the nylon fixing block and avoid the nylon transition block from being worn or torn. Moreover, the metal sensing block (such as iron-based material) can directly trigger the magnetic sensor without the need for an additional magnet, thus simplifying the structure.
[0023] Preferably, a second conical guide sleeve is provided at the rear end of the pipe bender, a third conical guide sleeve is provided at the front end of the pipe bender, and the third conical guide sleeve is provided with a material clamp; the pipe enters the second guide sleeve in the pipe bender after passing through the roller feeding device, comes out of the third guide sleeve after passing through the second guide sleeve, and enters the front end positioning device through the material clamp. After the front end positioning device completes the positioning, the mold behind the front end positioning device cooperates with the pipe bender to bend the pipe. The pipe bending mold is relatively universal, so it will not be described in detail in this application.
[0024] (3) Beneficial effects
[0025] The object of the present invention is to provide a processing device for slender coiled pipes, which realizes the high efficiency, precision and automation of the processing of slender coiled pipes: the specially designed loading rack, with the help of the discharging slope, vibrator, pressure feeding device and material distributing mechanism, automatically sorts the stacked pipes into a single row during vibration. The material distributing plate dynamically shares the pressure of the upper-layer pipes, reducing the pressure borne by the single pipe at the bottom by more than 60%. It completely solves the problems of material jamming at the top, pipe ejection and surface damage caused by gravity accumulation in traditional devices, greatly improves the success rate of single-pipe material distribution, lays a solid foundation for the subsequent pipe bending step, and improves the overall pipe bending efficiency. Brief description of the drawings
[0026] Figure 1 is the overall schematic diagram of the present invention;
[0027] Figure 2 is the bottom view of the loading rack of the present invention;
[0028] Figure 3 is the schematic diagram of the loading rack of the present invention;
[0029] Figure 4 is the schematic diagram of the loading rack of the present invention;
[0030] Figure 5 is the enlarged view of the material distributing device of the present invention;
[0031] Figure 6 is the schematic diagram of the ejector device of the present invention;
[0032] Figure 7 is the schematic diagram of the roller feeding device of the present invention;
[0033] Figure 8 is the schematic diagram of the roller feeding device of the present invention;
[0034] Figure 9 is the schematic diagram of the roller feeding device of the present invention;
[0035] Figure 10 is the schematic diagram of the front-end positioning device of the present invention;
[0036] Figure 11 is the schematic diagram of the positioning connecting plate of the present invention;
[0037] Figure 12 is the schematic diagram of the pipe bender of the present invention.
[0038] In the figure: 1 - Loading rack, 101 - Loading rack frame, 102 - Discharging ramp, 103 - Vibrator, 104 - Second photoelectric switch, 105 - Material pressing device, 106 - Material distributing device, 1061 - Material distributing support, 1062 - Material distributing cylinder, 1063 - Material distributing plate, 107 - First photoelectric switch, 108 - Third photoelectric switch, 109 - Material ejecting device, 1091 - Cylinder frame, 1092 - Cylinder, 1093 - Buffer rubber, 1094 - Guide rod, 1095 - Contact block, 1096 - Guide block fixing frame, 1097 - Guide block, 110 - Material pressing block, 111 - Material blocking block, 112 - Material supporting roller, 2 - Roller feeding device, 201 - Guide rail, 202 - Feeding fixing frame, 203 - Adjusting frame, 204 - Adjustable cylinder seat, 205 - Adjusting track, 206 - Adjustable stroke cylinder, 207 - Spring, 208 - Connecting block, 209 - Driven wheel frame, 210 - Driven wheel, 211 - Servo motor, 212 - Reducer, 213 - Driving wheel, 214 - Horizontal material pushing cylinder, 215 - Vertical material pushing cylinder, 216 - Material pushing block, 217 - First conical guide sleeve, 218 - Material pushing frame, 219 - Claw, 3 - Pipe bender, 301 - Second conical guide sleeve, 302 - Third conical guide sleeve, 303 - Material clamp, 4 - Front-end positioning device, 401 - Positioning fixing plate, 402 - Positioning slider, 403 - Positioning slide rail, 404 - Positioning connecting plate, 4041 - Induction block, 4042 - Nylon fixing block, 405 - Positioning cylinder, 406 - Floating joint, 5 - Unloading device. Detailed implementation manner
[0039] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying Figure 1 - accompanying Figure 12 drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0040] As Figure 1 shown, the present invention provides a technical solution: a processing device for slender coiled pipes, including a loading rack 1, a roller feeding device 2 is fixed on the left side of the loading rack 1, a pipe bender 3 is fixed on the left side of the roller feeding device 2, a front-end positioning device 4 is fixed on the left side of the pipe bender 3, and an unloading device 5 is fixed on the upper end of the front-end positioning device 4;
[0041] As Figures 2 - 4As shown in the figure, the loading rack 1 includes a loading rack 101. At the upper end of the loading rack 101, a discharging ramp 102 is fixed. At the lower end of the discharging ramp 102, a vibrator 103 is provided. At the upper end of the discharging ramp 102, a pressing device 105 is provided. On the side of the pressing device 105, a second photoelectric switch 104 is fixed. At the upper end of the pressing device 105, a material distributing device 106 is fixed. On the side of the pressing device 105, a first photoelectric switch 107 is fixed. At the end of the pressing device 105, a third photoelectric switch 108 is fixed. On the side of the loading rack 101, a pusher device 109 is fixed. On the pressing device 105, a pressing block 110 is fixed. Next to the pressing block 110, a material blocking block 111 is fixed. Next to the material blocking block 111, a supporting roller 112 is fixed. The loading rack 101 is used to fix the discharging ramp 102. The discharging ramp 102 provides an inclined track for the pipes to slide down. Cooperating with the vibrator 103, it can achieve automatic unwinding of the pipes, avoid stacking and winding, and improve the unwinding efficiency by 90%. The vibrator 103 is installed on the back of the discharging ramp 102 and generates high-frequency vibration (frequency 50Hz, amplitude 0.5mm). The installation quantity of the vibrator 102 depends on the inclination angle of the discharging ramp 102. The larger the angle, the fewer the number of vibrators 102 required. However, the vibrator 102 needs to be symmetrically installed along the axial direction of the pipe to ensure that the front end and the rear end of the pipe receive the same vibration, preventing inclination due to different frictional forces at the front and the rear when it drops. The second photoelectric switch 104, the arrangement position of the second photoelectric switch 104 is at the upper end of the material distributing device 106, which is used for material shortage prompt, so as to ensure that there are always pipes in the material distributing device 106. The pressing device 105 and the vibrator 103 are arranged correspondingly, as Figure 2 shown, at the upper end of the vibrator 103, a fixed pipe is provided. The distance between the fixed pipe and the pressing device 105 is slightly less than the pipe diameter, applying a pressure of 0.5 - 1 kg to the pipe. Such a setting has the following advantages:
[0042] 1. Vibration coupling under rigid constraint
[0043] The distance between the fixed pipe and the pressing device 105 is slightly less than the pipe diameter, forming an interference fit type clamping of the pipe. When the vibrator 103 works, this rigid constraint can directly transfer the vibration energy to the pipe through the fixed pipe, reducing vibration attenuation and energy dissipation caused by gaps.
[0044] 2. Resonance optimization assisted by pressure
[0045] The light pressure of 0.5 - 1 kg makes the pipe in the critical state of elastic deformation, neither suppressing vibration due to rigid clamping nor causing disorder of the vibration mode due to loosening. In this state, the pipe is easy to match the resonance frequency with the vibrator 103, improving the vibration energy efficiency.
[0046] 3. The clearance design of the interference fit (slightly less than the pipe diameter) allows the pipe to have a small elastic deformation space during vibration.
[0047] The above advantages can ensure that when the pipe is vibrating, the falling rates at the front and back are as consistent as possible, preventing the rear end from tilting up when the front end falls first.
[0048] The material distributing device 106 holds the pipe in place and cooperates with the first photoelectric switch 107. The first photoelectric switch 107 is located at the lower end of the material distributing device 106. When the first photoelectric switch 107 detects that there is no material, the material distributing cylinder 1062 in the material pressing device 106 lifts up, and the material on the upper slope slides down. When the first photoelectric switch 107 detects that there is material, the material pressing device 106 presses the pipe. Therefore, the lowermost pipe is at most squeezed by the materials between the material pressing device 106 and the lowermost pipe, and at least squeezed by the materials between the first photoelectric switch 107 and the lowermost pipe. Such a setting solves the problem of material jamming caused by gravity accumulation through dynamic pressure sharing, and can ensure that the lowermost pipe is always pressed by the pipes above, preventing warping. It can prevent the material ejecting device 109 from having to overcome a huge frictional force to eject the bottom pipe when it ejects, preventing the pipe from being ejected. The third photoelectric switch 108 is used to detect whether there is a pipe on the material supporting roller 112. If there is no pipe, the material ejecting device 109 lifts up and ejects the pipe onto the material supporting roller 112. There is a pressing block 110 at the front end of each material pressing device 105. The position can be adjusted front and back to ensure that only one straight pipe is lifted up when the material ejecting device 109 ejects the material. There are multiple groups of material blocking blocks 111, ensuring that the gap between the material blocking blocks 111 and the pressing blocks 110 is larger than the diameter of one pipe but smaller than the diameter of two pipes, ensuring that the material ejecting device 109 can only lift up one pipe each time.
[0049] As Figure 5 shown, the material distributing device 106 includes a material distributing support 1061 fixed to the upper end of the material pressing device 105. The lower end of the material distributing support 1061 is fixed with a material distributing cylinder 1062, and the lower end of the material distributing cylinder 1062 is fixed with a material distributing plate 1063; the material distributing support 1061 fixes the material distributing cylinder 1062 and supports the material distributing mechanism. The material distributing cylinder 1062 drives the material distributing plate 1063 to move up and down. The material distributing plate 1063 is used to press the pipe tightly, ensuring that the pressure of the upper pipes will not be transmitted to the lower pipes, avoiding material jamming or bouncing caused by gravity accumulation, and significantly improving the material distribution success rate.
[0050] As Figure 6As shown in the figure, the ejector device 109 includes a cylinder frame 1091. A cylinder 1092 is fixed to the lower end of the cylinder frame 1091. A buffer rubber 1093 is provided on the cylinder 1092. A guide rod 1094 is installed inside the cylinder frame 1091. A contact block 1095 is fixed to the upper end of the guide rod 1094. A guide block fixing frame 1096 is fixed to the upper end of the contact block 1095. A guide block 1097 is fixed to the upper end of the guide block fixing frame 1096. The cylinder frame 1091 is fixed to the side of the loading frame 101, serving as the basic support structure of the ejector device. Fixed to the side of the loading frame 101, it provides an installation carrier for components such as the cylinder 1092 and the guide rod 1094, and bears the reaction force during the ejecting process. The cylinder 1092 is the core power source. It drives the contact block 1095 to jack up the guide block 1097 upward through the telescopic movement of the piston rod, jacking up the pipes on the discharging slope 102. The buffer rubber 1093 is installed at the top of the piston rod of the cylinder 1092, between the cylinder and the contact block 1095, and is used to absorb the impact energy at the moment of ejecting, preventing the guide block fixing frame 1096 from rising rapidly due to hard contact and causing the pipes to be bounced off. The guide rod 1094 is vertically installed inside the cylinder frame 1091, passing through the contact block 1095 and fixed to the guide block fixing frame 1096, providing linear guidance for the ejecting action and preventing the contact block 1095 from shifting laterally or tilting during the ejecting process, which may cause the tilting or offset of the guide block 1097. The guide block fixing frame 1096 is fixed to the upper end of the contact block 1095 and is used to install the guide block 1097. The guide block 1097 is inclined outward, and the tip of the higher side is located on the inner side of the gap between the material blocking block 111 and the material pressing block 110, and is used to make the pipe slide down after jacking up one pipe and slide onto the supporting rollers 112.
[0051] As Figures 7 - 9As shown in the figure, the roller feeding device 2 includes a guide rail 201 fixed to the side of the loading rack 1. A feeding fixing plate 202 is fixed to the upper end of the guide rail 201. An adjusting frame 203 is fixed to the upper end of the feeding fixing plate 202. An adjusting track 205 is fixed to the side of the adjusting frame 203. An adjustable cylinder seat 204 is fixed to the side of the adjusting frame 203. An adjustable stroke cylinder 206 is fixed inside the adjustable cylinder seat 204. A spring 207 is fixed to the lower end of the adjustable stroke cylinder 206. A connecting block 208 is fixed to the lower end of the spring 207. A driven wheel frame 209 is fixed inside the connecting block 208. A driven wheel 210 is installed on the driven wheel frame 209. A speed reducer 212 is fixed to the side of the adjusting frame 203. A driving wheel 213 is connected to one side of the speed reducer 212. A servo motor 211 is fixed to the other side of the speed reducer 212. A pushing frame 218 is fixed to the upper end side of the feeding fixing plate 202. A horizontal pushing cylinder 214 is fixed to the side of the pushing frame 218. A vertical pushing cylinder 215 is fixed to the side of the horizontal pushing cylinder 214. A pushing block 216 is fixed to the side of the vertical pushing cylinder 215. A first tapered guide sleeve 217 is fixed to the front end of the feeding fixing plate 202. A clamping jaw 219 is fixed to the side of the adjusting frame 203; the guide rail 201 serves as the basic support structure of the roller feeding device 2 and is fixed to the side of the loading rack, providing a horizontal guiding track for the feeding fixing plate 202. A locking structure and motion servo can be installed as needed to adjust the position of the roller feeding device 2. The feeding fixing plate 202 bears core components such as the adjusting frame 203 and the pushing frame 218, forming the main installation platform of the device. The adjusting frame 203 installs components such as the driven wheel frame 209 and the adjustable cylinder seat 204, and realizes the vertical position adjustment of the driven wheel 210 through the adjusting track 205. The adjustable cylinder seat 204 fixes the adjustable stroke cylinder 206 and drives the vertical movement of the driven wheel 210 through the adjusting track 205. The adjusting track 205 cooperates with the driven wheel frame 209. A slider is provided on the driven wheel frame 209, which can move along the adjusting track 205. The adjustable stroke cylinder 206 drives the driven wheel frame 209 to move up and down through air pressure. By adjusting the cylinder stroke, a flexible pressing force of 0.5 - 1 kg is provided to adapt to slender tubes with different rigidities. The spring 207 and the clamping jaw 219 act together to provide a buffer for the pipe, preventing the tail of the slender tube from swinging and thus getting out of the roller groove and affecting feeding. The spring 207 provides a buffer for the slender tube. There is still a gap between the tube and the clamping jaw 219 after the clamping jaw 219 is closed. The tube can only move axially, preventing the tail of the tube from swinging during forward movement. The connecting block 208 is used to install the driven wheel frame 209. The driven wheel frame 209 installs the driven wheel 210 to support the driven wheel 210 to realize up and down movement, forming a clamping pair of rollers with the driving wheel 213, and driving the pipe to move forward through friction. Its rigid structure ensures no deformation during long-term operation. The advantages of this conveying method are as follows:
[0052] Stable conveying: Double-wheel clamping avoids the slipping of the pipe, especially suitable for slender pipes with smooth surfaces (such as medical catheters).
[0053] Guiding function: The curvature of the wheel surface is adapted to the diameter of the pipe, guiding the pipe to move in a straight line along the central axis, reducing bending deviation, and at the same time timely controlling the slight swing at the tail of the pipe body to prevent the swing from increasing and causing the pipe to leave the wheel surface.
[0054] The servo motor 211 is used as a power source to drive the driving wheel 213 to rotate through the reducer 212. The reducer 212 is used to reduce the speed of the servo motor 211, amplify the torque, and drive the driving wheel 213 to rotate smoothly. The driving wheel 213 rotates under the drive of the reducer, and drives the pipe to move toward the pipe bending machine 3 through friction. The straight pipe product falls into the groove of the driving wheel 213. After the photoelectric switch 3 detects that there is material, the clamp 219 is closed. After closing, there is still a gap between the pipe and the clamp 219, and the pipe can only move axially (the purpose of setting this clamp 219 is to prevent the tail of the slender pipe from swinging during feeding and thus escaping from the roller groove to affect feeding). The vertical push cylinder 215 is lifted up, and then the horizontal push cylinder 214 retracts the push block 216 to push the front end of the straight pipe to position. After positioning, the horizontal push cylinder 214 extends out, and the vertical push cylinder 215 retracts to avoid the straight pipe from feeding forward. Finally, the adjustable stroke cylinder 206 extends to make the passive wheel 210 press against the active wheel 213, and the active wheel 213 rotates to realize forward feeding. The front end of the roller feeding device is equipped with a first conical guide sleeve 217 to ensure that the pipe can accurately enter the pipe bending machine 3.
[0055] The driving wheel 213 and the driven wheel 210 form a roller clamp, and the adjustable stroke cylinder 206 drives the driven wheel to move up and down, providing a flexible pressing force of 0.5 to 1 kg. The pressure is further buffered by the spring 207 to achieve "soft contact". The wheel surface curvature of the driving wheel 213 and the driven wheel 210 strictly matches the outer diameter of the pipe to form an envelope guide groove. After the clamp 219 is closed, a small gap is retained with the pipe (only axial movement is allowed). At the same time, the spring 207 provides a buffering force to form an "axial constraint-radial buffering" mechanism: limit the lateral swing amplitude of the pipe to prevent the tail from escaping from the roller groove (the feeding interruption rate caused by the free swing of the tail of the traditional equipment is as high as 25%, and this device is reduced to less than 5%); the flexible contact of the spring 207 avoids rigid impact, prevents the pipe body from rebounding when it hits the upper passive wheel 210, and reduces the number of rebounds at the tail of the pipe body. Protect thin-walled pipes from damage.
[0056] like Figure 10As shown, the front-end positioning device 4 includes a positioning fixing plate 401 fixed to the front end of the pipe bending machine 3, a positioning slider 402 is fixed on the side of the positioning fixing plate 401, a positioning slide rail 403 is installed on the side of the positioning slider 402, a positioning connecting plate 404 is fixed on the side of the positioning slide rail 403, a positioning cylinder 405 is fixed on the side of the positioning fixing plate 401, and a floating joint 406 is fixed on the upper end of the positioning cylinder 405; the positioning fixing plate 401 serves as the basic frame of the front-end positioning device, fixes the core components such as the positioning slider 402 and the positioning cylinder 405, and provides rigid support. The positioning slider 402 is connected to the positioning connecting plate 404, and provides high-precision linear guidance along the positioning slide rail 403. The positioning slide rail 403 performs linear reciprocating motion to transmit the driving force of the positioning cylinder 405. Ensure the stability and repeatability of the movement of the positioning connecting plate 404. As an actuator, the positioning connecting plate 404 directly contacts the front end of the pipe to transmit the positioning force. After positioning is completed, the positioning cylinder 405 provides a positioning driving force to drive the positioning connecting plate 404 to move downward, and the induction block 4041 falls. After the material clamp 303 clamps the pipe, the driving wheel 213 and the driven wheel 210 of the roller feeding device 2 are opened, and the pipe bending machine 3Y axis feeds and bends the pipe until the bending is completed. The floating joint 406 connects the cylinder piston rod and the positioning connecting plate 404.
[0057] like Figure 11 As shown, a nylon transition block 4042 is fixed to the side of the upper end of the positioning connecting plate 404, and a sensing block 4041 is fixed to the outside of the nylon fixing block 4042; the sensing block 4041 is made of metal, and the metal sensing block 4041 can resist the tube body to prevent the metal tube body from cutting the nylon fixing block 4042, thereby preventing the nylon transition block 4042 from being worn or torn. Moreover, the metal sensing block 4041 (such as iron-based material) can directly trigger the magnetic sensor without the need for an additional magnet, thereby simplifying the structure.
[0058] like Figure 12 As shown, a second conical guide sleeve 301 is provided at the rear end of the pipe bender 3, a third conical guide sleeve 302 is provided at the front end of the pipe bender 3, and a material clamp 303 is provided at the third conical guide sleeve 302; the pipe enters the second guide sleeve 301 in the pipe bender 3 after passing through the roller feeding device 2, comes out of the third guide sleeve 301 after passing through the second guide sleeve 301, and enters the front end positioning device 4 through the material clamp 303. After the front end positioning device completes the positioning, the mold behind the front end positioning device 4 cooperates with the pipe bender 3 to bend the pipe. The pipe bending mold is relatively universal, so it is not described in detail in this application.
[0059] Working principle:
[0060] Straight pipes with a diameter of φ6-φ12mm and a length of 2-4 meters are stacked on a discharge slope 102 (inclination angle 15°-25°). The vibrator 103 (frequency 50Hz, amplitude 0.5mm) at the bottom of the slope generates high-frequency vibration, so that the pipes overcome mutual friction and elastic hooking during vibration, automatically spread out and slide down the slope in a single row.
[0061] The pressing device 105 applies 0.5-1kg pressure to the pipe through the pressing block 110 to offset the upward warping of the tail of the pipe due to the large aspect ratio (the measured upward warping angle is reduced from 30° to below 5°), ensuring that the pipe slides down the slope stably.
[0062] The dividing plate 1063 is driven by the dividing cylinder 1062, and in the initial state, the pipe is divided into two parts:
[0063] Upper stacking area: The weight of the pipes above the dividing plate is borne by the dividing plate to prevent the pressure from being transmitted to the lower part.
[0064] Lower order arrangement area: Only 4-8 pipes are retained under the dividing plate, and the pressure on the bottom pipes is reduced by more than 60% (the bottom pressure of traditional equipment can reach 200N, and this device reduces it to less than 80N).
[0065] The third photoelectric switch 108 detects whether there is a pipe on the supporting roller 112:
[0066] If there is no material, the cylinder 1092 drives the guide block 1097 to push upward, and the tip of the guide block tilted outward is inserted into the gap between the stop block 111 and the pressure block 110 (the gap width is greater than the diameter of one pipe and less than two pipes), and only the single pipe at the bottom is lifted. The pipe falls into the supporting roller 112 and is supported by the driving wheel 213. After the clamping jaws 219 are closed, a small gap is kept between the pipe (only axial movement is allowed), and the spring 207 is used for buffering to prevent the tail of the pipe from swinging out of the roller groove when moving forward. The driving wheel 213 rotates, the vertical push cylinder 215 is lifted, and then the horizontal push cylinder 214 retracts the push block 216 to push the front end of the straight pipe to position. After positioning, the horizontal push cylinder 214 extends, and the vertical push cylinder 215 retracts to avoid the straight pipe from feeding forward. Finally, the adjustable stroke cylinder 206 extends to press the passive wheel 210 against the active wheel 213, and the active wheel 213 rotates to feed forward. The front end of the roller feeding device is equipped with a first conical guide sleeve 217 to ensure that the pipe can accurately enter the pipe bender 3. The pipe passes through the first conical guide sleeve 217 (front end of the roller feeding device), the second conical guide sleeve 301 (rear end of the pipe bender), and the third conical guide sleeve 302 (front end of the pipe bender) in sequence. After the pipe hits the induction block 4041, the active wheel 213 stops rotating and the induction block 4041 moves down. This step ensures that the length of the bent part of the pipe is the same before each bending. The material clamp 303 clamps the pipe and feeds it through the pipe bender 3 until the bending is completed and it is taken out by the unloading device 5.
[0067] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An elongated coiled tube processing device, characterized in that, It includes a loading rack (1), a roller feeding device (2) is fixed on the left side of the loading rack (1), a pipe bender (3) is fixed on the left side of the roller feeding device (2), a front end positioning device (4) is fixed on the left side of the pipe bender (3), and a discharging device (5) is fixed on the upper end of the front end positioning device (4); The said loading rack (1) includes a loading rack frame (101), a discharging slope (102) is fixed on the upper end of the loading rack frame (101), a vibrator (103) is arranged at the lower end of the discharging slope (102), a pressing device (105) is arranged at the upper end of the discharging slope (102), a second photoelectric switch (104) is fixed on the side of the pressing device (105), a material distributing device (106) is fixed on the upper end of the pressing device (105), a first photoelectric switch (107) is fixed on the side of the pressing device (105), a third photoelectric switch (108) is fixed at the end of the pressing device (105), a blanking device (109) is fixed on the side of the loading rack frame (101), a pressing block (110) is fixed on the pressing device (105), a material blocking block (111) is fixed beside the pressing block (110), and a supporting roller (112) is fixed beside the material blocking block (111).
2. The processing equipment for an elongated coiled tube according to claim 1, characterized in that, The said material distributing device (106) includes a material distributing support (1061) fixed on the upper end of the pressing device (105), a material distributing cylinder (1062) is fixed at the lower end of the material distributing support (1061), and a material distributing plate (1063) is fixed at the lower end of the material distributing cylinder (1062).
3. An elongate coiled tube processing device according to claim 1, wherein, The said blanking device (109) includes a cylinder frame (1091), a cylinder (1092) is fixed at the lower end of the cylinder frame (1091), a buffer rubber (1093) is arranged on the cylinder (1092), a guide rod (1094) is installed inside the cylinder frame (1091), a contact block (1095) is fixed at the upper end of the guide rod (1094), a guide block fixing frame (1096) is fixed at the upper end of the contact block (1095), and a guide block (1097) is fixed at the upper end of the guide block fixing frame (1096).
4. An elongate coiled tube processing device according to claim 1, characterized in that, The roller feeding device (2) includes a guide rail (201) fixed to the side of the loading rack (1). A feeding fixing plate (202) is fixed to the upper end of the guide rail (201). An adjusting frame (203) is fixed to the upper end of the feeding fixing plate (202). An adjusting track (205) is fixed to the side of the adjusting frame (203). An adjustable cylinder seat (204) is fixed to the side of the adjusting frame (203). An adjustable stroke cylinder (206) is fixed inside the adjustable cylinder seat (204). A spring (207) is fixed to the lower end of the adjustable stroke cylinder (206). A connecting block (208) is fixed to the lower end of the spring (207). A driven wheel frame (209) is fixed inside the connecting block (208). A driven wheel (210) is installed on the driven wheel frame (209). A reducer (212) is fixed to the side of the adjusting frame (203). A driving wheel (213) is connected to one side of the reducer (212). A servo motor (211) is fixed to the other side of the reducer (212). A pushing frame (218) is fixed to the upper side of the feeding fixing plate (202). A horizontal pushing cylinder (214) is fixed to the side of the pushing frame (218). A vertical pushing cylinder (215) is fixed to the side of the horizontal pushing cylinder (214). A pushing block (216) is fixed to the side of the vertical pushing cylinder (215). A first conical guide sleeve (217) is fixed to the front end of the feeding fixing plate (202).
5. The processing equipment for an elongated coiled tube according to claim 1, wherein, The front-end positioning device (4) includes a positioning fixing plate (401) fixed to the front end of the pipe bender (3). A positioning slider (402) is fixed to the side of the positioning fixing plate (401). A positioning slide rail (403) is installed on the side of the positioning slider (402). A positioning connecting plate (404) is fixed to the side of the positioning slide rail (403). A positioning cylinder (405) is fixed to the side of the positioning fixing plate (401). A floating joint (406) is fixed to the upper end of the positioning cylinder (405).
6. An elongate coiled tube processing device according to claim 4, characterized in that, A nylon transition block (4042) is fixed to the upper side of the positioning connecting plate (404). An induction block (4041) is fixed to the outside of the nylon fixing block (4042).
7. An elongate coiled tube processing device according to claim 1, characterized in that, A second conical guide sleeve (301) is provided at the rear end of the pipe bender (3). A third conical guide sleeve (302) is provided at the front end of the pipe bender (3). A material clamp (303) is provided on the third conical guide sleeve (302).