Pipe flaring feeding device with adaptive clamping mechanism
The adaptive clamping mechanism solves the problems of adaptability and positioning accuracy of the feeding device in plastic pipe processing, and realizes stable clamping and high-precision conveying of different pipe diameters, thereby improving the degree of automation and processing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 荆门市沙洋宏祥管业有限公司
- Filing Date
- 2025-05-28
- Publication Date
- 2026-06-16
AI Technical Summary
In existing plastic pipe processing, traditional feeding devices have poor adaptability, low positioning accuracy, and insufficient automation, resulting in pipe end deformation and unstable processing quality.
An adaptive clamping mechanism is adopted, including an inclined material rack, a lifting conveyor assembly, an adaptive clamping assembly, a detection assembly, and a controller. Dynamic adjustment and precise positioning are achieved through photoelectric sensors and laser sensors, and clamping force and position compensation are achieved by combining a servo motor and a worm gear mechanism.
It achieves compatibility with different pipe diameters, improves clamping stability by 30%, controls the concentricity of the flared end face within ±0.1mm, reduces the pipe end deformation rate to below 1%, and improves the degree of automation and processing accuracy.
Smart Images
Figure CN224360686U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic pipe production equipment, and in particular to a pipe flaring and feeding device with an adaptive clamping mechanism. Background Technology
[0002] Flaring is one of the core processes in PVC pipe processing, referring to the widening of the pipe end through mechanical or thermoforming methods to form a socket-type connection structure. The flared pipe end is trumpet-shaped, achieving a quick seal connection with the adjacent pipe socket via a rubber sealing ring. It is widely used in water supply and drainage, agricultural irrigation, and industrial fluid transport systems. In the field of plastic pipe processing, the feeding stage before flaring must ensure accurate pipe positioning and stable transport. Traditional feeding devices often use fixed clamps or manual-assisted positioning, which have the following drawbacks: 1. Poor adaptability: Fixed clamping mechanisms are difficult to accommodate pipes of different diameters and wall thicknesses, and changing clamps increases downtime; 2. Low positioning accuracy: Pipes are prone to positional shifts due to their own weight, and the concentricity deviation of the flared end face often exceeds ±0.5mm, affecting subsequent processing quality; 3. Insufficient automation: Frequent manual intervention, especially when transporting thin-walled pipes, can easily lead to pipe deformation due to uncontrolled clamping force.
[0003] Existing technologies, such as the CN222630422 automatic pipeline feeding device, achieve full automation of pipeline feeding by using a top-flattening structure to flatten the pipe and then using a feeding structure to feed the pipe. However, they lack clamping adaptability. Therefore, there is an urgent need to develop an automated feeding device that integrates dynamic adjustment, intelligent detection, and safety protection. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a pipe flaring and feeding device with an adaptive clamping mechanism.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] This utility model discloses a pipe flaring and feeding device with an adaptive clamping mechanism, comprising: an inclined feeding rack, the inclination angle of which is configured to allow the pipe to slide to the discharge side by gravity; a lifting and conveying assembly, fixed to the discharge side of the inclined feeding rack, used for layered lifting and position correction of the pipe; an adaptive clamping assembly, disposed at the end of the lifting and conveying assembly, including a symmetrically driven sprocket transmission mechanism, an elastic clamping unit linked to the sprocket, and a power module for synchronously adjusting the clamping spacing; a height adjustment assembly, connected to the mounting base of the adaptive clamping assembly, used for vertical position compensation of the clamping station; a detection assembly, including at least one photoelectric sensor or laser sensor located at the clamping station, used for collecting pipe position and attitude data; and a controller, signal-connected to the lifting and conveying assembly, the adaptive clamping assembly, and the detection assembly, used for controlling the coordinated action of each component based on sensor feedback.
[0007] As a preferred embodiment of this utility model, the lifting and conveying assembly includes: a conveying support, which is smoothly connected to the inclined material rack via a transition slope, wherein the radius of curvature of the transition slope is greater than 1.5 times the maximum diameter of the pipe; an array of lifting units, each lifting unit comprising a vertical cylinder, a wedge-shaped top block hinged to the top of the cylinder, and a slide rail mechanism for adjusting the horizontal spacing of the lifting units; a V-shaped roller conveyor, the roller surface height of which is continuously adjustable via a worm gear mechanism, and the roller conveyor surface is provided with an anti-slip coating; and a buffer module, located at the connection between the conveying support and the inclined material rack, consisting of an elastic damper and a limiting baffle, for mitigating the impact of pipe sliding.
[0008] As a preferred technical solution of this utility model, the inclined surface of the wedge-shaped top block is provided with staggered raised anti-slip textures, and the inclination angle ranges from 25° to 65°; the piston rod end of the vertical cylinder integrates a pressure detection unit for real-time monitoring of the lifting resistance, and triggers an emergency retraction action when the resistance exceeds the threshold; the slide rail mechanism includes a guide rail fixed to the conveying bracket and a lifting unit base slidably mounted on the guide rail.
[0009] As a preferred embodiment of this utility model, in the adaptive clamping assembly: the sprocket transmission mechanism is an elliptical closed track, the major axis of which is parallel to the pipe axis; the elastic clamping unit includes at least three sets of clamping blocks arranged in an array along the circumference of the sprocket, the working surface of the clamping block is a concave arc surface, and the surface is covered with an elastic pad with a friction coefficient greater than 0.5; the power module includes a servo motor, a harmonic reducer connected to the motor output shaft, and an encoder for detecting the sprocket speed, the encoder signal being connected to the controller to achieve closed-loop control of the clamping speed.
[0010] As a preferred embodiment of this utility model, the height adjustment component includes: a linear guide rail, vertically fixed to the equipment frame, with a dust cover on the surface of the guide rail; a lifting platform, slidably connected to the linear guide rail via a slider, with a counterweight at the bottom of the platform to balance the load; a drive mechanism, including at least one of an electric push rod, a synchronous pulley set, or a ball screw, for driving the lifting platform to move; and a position feedback unit, including a magnetic scale or photoelectric encoder installed on the lifting platform, for feeding back real-time height data to the controller.
[0011] As a preferred technical solution of this utility model, the detection component includes: a positioning detection unit, which adopts a photoelectric sensor or a proximity switch and is installed on the inlet side of the clamping station; a concentricity detection unit, which adopts a laser displacement sensor or a vision camera and is aligned with the flared end face of the pipe to measure the position deviation; and a clamping force detection unit, which is integrated into the piezoelectric thin film sensor or strain gauge of the clamping block for real-time monitoring of clamping pressure.
[0012] As a preferred embodiment of this utility model, the controller is configured to perform the following operations: automatically calculate the target height of the V-shaped roller conveyor and the initial spacing of the clamping blocks based on the pipe diameter; dynamically adjust the action sequence of each lifting unit during the lifting process to ensure horizontal pipe transport; control the height adjustment component to perform vertical position compensation based on the feedback from the concentricity detection unit; and trigger an emergency stop and alarm when the value of the clamping force detection unit exceeds the safe range.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. The spacing between the lifting units can be adjusted by the slide rail mechanism, and the height of the V-shaped roller conveyor can be dynamically adjusted to accommodate pipe diameters from DN20 to DN200. The three-point enveloping clamping and friction pad design of the elastic clamping unit achieves uniform distribution of contact pressure on the pipe wall, improving clamping stability by more than 30%.
[0015] 2. The laser displacement sensor and magnetic grating ruler feedback form a closed-loop control, and the concentricity error of the flared end face is controlled within ±0.1mm; the pressure detection of the lifting unit is linked with the controller to correct the pipeline level in real time, and the repeatability of the conveying position reaches ±0.3mm.
[0016] 3. The combination of the elastic damper and the limit baffle in the buffer module reduces the impact force of the pipe slippage by 40%-60%; the clamping force detection unit is linked with the servo motor, triggering an emergency stop within 0.5s when the pressure exceeds the limit, and the pipe deformation rate drops to below 1%. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is the front view of this utility model;
[0020] Figure 3 This is a top view of the present invention;
[0021] Figure 4 This is the left view of this utility model;
[0022] Figure 5 This is the right view of this utility model;
[0023] Figure 6 This is a schematic diagram of the lifting unit in this utility model;
[0024] In the diagram: 1. Inclined material rack; 2. Lifting and conveying assembly; 3. Adaptive clamping assembly; 4. Height adjustment assembly; 5. Detection assembly; 6. Controller; 21. Conveying bracket; 22. Lifting unit; 23. V-shaped roller conveyor; 24. Worm gear mechanism; 25. Buffer module; 31. Closed track; 32. Clamping block; 33. Servo motor; 34. Harmonic reducer; 41. Linear guide rail; 42. Lifting platform; 43. Drive mechanism; 44. Position feedback unit; 51. Position detection unit; 52. Concentricity detection unit; 53. Clamping force detection unit; 221. Vertical cylinder; 222. Wedge-shaped top block; 223. Slide rail mechanism. Detailed Implementation
[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0026] In the attached diagram, all identical reference numerals refer to the same components.
[0027] like Figure 1-6 As shown, this utility model provides a pipe flaring and feeding device with an adaptive clamping mechanism, including the following core components and their connections:
[0028] The inclined material rack 1 is welded from Q235 carbon steel with an inclination angle of 15°-25°, and its surface is covered with nylon guide strips. The end of the material rack is fixedly connected to the lifting conveyor assembly 2 by bolts, and is used for sliding and guiding by the weight of the pipeline.
[0029] Please see the appendix Figure 2-6 The lifting and conveying assembly 2 includes a conveying support 21: an aluminum alloy frame with a polyurethane transition slope at the front end, the end of which smoothly connects to the V-shaped roller conveyor 23; a lifting unit 22: comprising a vertical cylinder 221, a wedge-shaped top block 222, and a slide rail mechanism 223. The vertical cylinder 221 is fixed to the bottom of the conveying support 21 via a flange, and the top of the piston rod is hinged to the wedge-shaped top block 222, the wedge surface of which is machined with diamond-shaped anti-slip texture; the V-shaped roller conveyor 23: the roller surface is covered with a nitrile rubber layer, and it is connected to the side wall of the conveying support 21 via a worm gear mechanism 24, which can realize roller surface height adjustment; and a buffer module 25: composed of a polyurethane damper and a spring steel baffle, bolted to the inlet side of the conveying support 21.
[0030] Please see the appendix Figure 2-3 The adaptive clamping assembly 3 includes a sprocket drive mechanism 31: comprising an elliptical track and a double-row roller chain, with the long axis of the track parallel to the pipe axis, and mounted on the lifting platform 42 via a bearing seat; an elastic clamping unit 32: comprising three circumferentially distributed clamping blocks, the base of which is made of aluminum alloy, with a silicone pad adhered to the working surface, the pad thickness being 2-5mm; and a power module 33: a servo motor 331 connected to a harmonic reducer 332 via a coupling, the reducer output shaft connected to a drive sprocket via a key, and an encoder 333 mounted at the tail end of the motor.
[0031] The height adjustment assembly 4 includes a linear guide rail 41: a THK brand roller guide rail, vertically installed on both sides of the equipment frame; a lifting platform 42: a counterweight cavity welded to the bottom of the platform, filled with cast iron counterweight blocks, which are slidably connected to the linear guide rail 41 via a slider; a drive mechanism 43: including a ball screw and a servo motor, with the screw nut fixed to the bottom of the lifting platform 42 via a flange; and a position feedback unit 44: a magnetic scale reading head installed on the side of the lifting platform 42, with the scale body fixed to the frame.
[0032] Please see the appendix Figure 3 The detection component 5 includes: a positioning detection unit 51: an Omron photoelectric sensor is horizontally installed at the entrance of the clamping station, with an adjustable distance between the transmitter and receiver; a concentricity detection unit 52: a Keyence laser displacement sensor is fixed above the clamping station by a bracket, with a spot diameter ≤0.5mm; and a clamping force detection unit 53: a thin-film pressure sensor is embedded in the inner layer of the silicone pad of the clamping block 32, with the signal line leading out through the internal channel of the clamping block.
[0033] The method of using this utility model is as follows:
[0034] 1. After the pipe slides from the inclined material rack 1 into the lifting and conveying assembly 2, the buffer module 25 absorbs the impact kinetic energy, the vertical cylinder 221 drives the wedge-shaped top block 222 to lift the pipe to the V-shaped roller conveyor 23, and the worm gear mechanism 24 adjusts the roller surface height according to the pipe diameter.
[0035] 2. The sprocket transmission mechanism 31 of the adaptive clamping component 3 drives the clamping block 32 to retract synchronously. After the silicone pad contacts the tube wall, the servo motor 331 dynamically adjusts the clamping force according to the pressure feedback.
[0036] 3. The height adjustment component 4 drives the lifting platform 42 to perform Z-axis compensation based on the deviation signal of the concentricity detection unit 52, and finally accurately delivers the pipeline to the flaring station.
[0037] This utility model is a pipe flaring and feeding device with an adaptive clamping mechanism, which solves the problem of pipe deformation caused by traditional rigid clamping through multi-mechanism collaborative innovation.
[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A pipe flaring and feeding device with an adaptive clamping mechanism, characterized in that, include: The inclined feeding rack (1) is configured with an inclination angle that allows the pipe to slide to the discharge side by gravity; the lifting and conveying assembly (2) is fixed to the discharge side of the inclined feeding rack (1) and is used to lift and correct the position of the pipe in layers; the adaptive clamping assembly (3) is set at the end of the lifting and conveying assembly (2) and includes a symmetrically driven sprocket transmission mechanism, an elastic clamping unit linked with the sprocket, and a power module for synchronously adjusting the clamping distance; the height adjustment assembly (4) is connected to the mounting base of the adaptive clamping assembly (3) and is used to realize vertical position compensation of the clamping station; the detection assembly (5) includes at least one photoelectric sensor or laser sensor located at the clamping station and is used to collect pipe position and attitude data; the controller (6) is connected to the lifting and conveying assembly (2), the adaptive clamping assembly (3), and the detection assembly (5) and is used to control the coordinated action of each assembly based on sensor feedback.
2. The pipe flaring and feeding device according to claim 1, characterized in that, The lifting and conveying assembly (2) includes: a conveying support (21) that is smoothly connected to the inclined material rack (1) through a transition slope, wherein the radius of curvature of the transition slope is greater than 1.5 times the maximum diameter of the pipe; an array of lifting units (22), each lifting unit (22) including a vertical cylinder (221), a wedge-shaped top block (222) hinged to the top of the cylinder, and a slide rail mechanism (223) for adjusting the horizontal spacing of the lifting units (22); a V-shaped roller conveyor (23), the roller surface height of which is continuously adjusted by a worm gear mechanism (24), and the roller conveyor surface is provided with an anti-slip coating; and a buffer module (25) located at the connection between the conveying support (21) and the inclined material rack (1), consisting of an elastic damper and a limiting baffle, for reducing the impact of pipe sliding.
3. The pipe flaring and feeding device according to claim 2, characterized in that, The inclined surface of the wedge-shaped top block (222) is provided with staggered raised anti-slip textures, and its tilt angle ranges from 25° to 65°; the piston rod end of the vertical cylinder (221) integrates a pressure detection unit for real-time monitoring of the lifting resistance, and triggers an emergency retraction action when the resistance exceeds the threshold; the slide rail mechanism (223) includes a guide rail fixed to the conveying bracket (21) and a lifting unit (22) base slidably installed on the guide rail.
4. The pipe flaring and feeding device according to claim 1, characterized in that, In the adaptive clamping assembly (3): the sprocket drive mechanism is an elliptical closed track (31), whose major axis is parallel to the pipe axis; the elastic clamping unit includes at least three sets of clamping blocks (32) distributed in an array along the circumference of the sprocket, the working surface of the clamping block (32) is an inwardly concave arc surface, and the surface is covered with an elastic pad with a friction coefficient greater than 0.5; the power module includes a servo motor (33), a harmonic reducer (34) connected to the motor output shaft, and an encoder for detecting the sprocket speed, the encoder signal is connected to the controller (6) to realize closed-loop control of the clamping speed.
5. The pipe flaring and feeding device according to claim 1, characterized in that, The height adjustment assembly (4) includes: a linear guide rail (41) vertically fixed to the equipment frame, with a dust cover on the surface of the guide rail; a lifting platform (42) slidably connected to the linear guide rail (41) via a slider, with a counterweight at the bottom of the platform to balance the load; a drive mechanism (43) including at least one of an electric push rod, a synchronous pulley set or a ball screw, for driving the lifting platform (42) to move; and a position feedback unit (44) including a magnetic scale or photoelectric encoder installed on the lifting platform (42), for feeding back real-time height data to the controller (6).
6. The pipe flaring and feeding device according to claim 1, characterized in that, The detection component (5) includes: a positioning detection unit (51), which uses a photoelectric sensor or a proximity switch and is installed on the inlet side of the clamping station; a concentricity detection unit (52), which uses a laser displacement sensor or a vision camera to measure the position deviation by aligning with the flared end face of the pipe; and a clamping force detection unit (53), which is a piezoelectric thin film sensor or strain gauge integrated into the clamping block (32) for real-time monitoring of clamping pressure.
7. The pipe flaring and feeding device according to any one of claims 1-6, characterized in that: The controller (6) is configured to perform the following operations: automatically calculate the target height of the V-shaped roller conveyor (23) and the initial spacing of the clamping blocks (32) based on the pipe diameter; dynamically adjust the action sequence of each lifting unit (22) during the lifting process to ensure horizontal pipe transport; control the height adjustment component (4) to perform vertical position compensation based on the feedback from the concentricity detection unit (52); and trigger an emergency stop and alarm when the value of the clamping force detection unit (53) exceeds the safe range.