Clamping device and clamping method for extra-long coils

Abstract

This invention relates to the field of ultra-long coil processing technology, specifically to a clamping device and method for ultra-long coils. The device includes a coiling machine body, a mounting plate, and a support frame. One side of the mounting plate is rotatably connected to the coiling machine body via a rotating shaft. A clamping mechanism and a driving mechanism are mounted on the upper end of the mounting plate. The clamping mechanism includes two support seats, each with a vertical plate fixedly connected to its upper end via a horizontal plate. The beneficial effects of this invention are: it constructs an innovative technical solution that links the clamping mechanism and the driving mechanism. During operation, the support seats of the clamping mechanism support the lower end of the coil. Simultaneously, the pressure plate of the driving mechanism presses down, applying constant and appropriate pressure to the upper end of the coil. When the coil begins its spiral ascent, a servo motor, as the core power source, drives the pressure plate via a ball screw to move smoothly upwards at a rhythm completely synchronized with the coil's ascent speed, maintaining effective pressure on the upper end of the coil and ensuring that the coil does not easily sway.

Description

Technical Field

[0001] This invention relates to the field of ultra-long coil processing technology, specifically to a clamping device and clamping method for ultra-long coils. Background Technology

[0002] Extra-long coils are a special type of pipe with no longitudinal welded joints and a hollow cross-section. Their length breaks through the limitations of traditional coil specifications and can be customized according to actual engineering needs. As a key basic component in the industrial field, extra-long coils are widely used in fields with stringent requirements for piping systems, such as petrochemicals, power energy, shipbuilding, aerospace engineering, semiconductors, and medical and food industries, due to their excellent comprehensive performance.

[0003] In the manufacturing process, the spiral forming of ultra-long coils relies on the coordinated action of multiple sets of guide rollers and drive devices. Under the progressive bending of the bending rollers and the angular offset control of the guide rollers, the straight tube is gradually spirally wound into a coil of predetermined specifications. However, when the coil reaches a certain height, due to its own weight and the characteristics of the spiral structure, the coil body is prone to radial swaying, posing a challenge to forming accuracy and equipment stability. Furthermore, during the finished product collection stage, if the coil in a vertical position is too high, workers need to operate equipment to transfer the coil to the forming station, a rather cumbersome process. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a clamping device and method for ultra-long coils, which solves the problem that when the coil is wound to a certain height, the coil body is prone to radial sway due to its own gravity and the characteristics of the spiral structure, which poses a challenge to the molding accuracy and equipment stability. In addition, during the finished product collection stage, if the coil in the vertical state is at a high height, it is necessary for the staff to operate the equipment to transfer the coil to the molding station, which is a rather cumbersome process.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a clamping device for ultra-long coils, including a coiling machine body, a mounting plate and a support frame, wherein the mounting plate is horizontally arranged on the coiling machine body;

[0006] One side of the mounting plate is rotatably connected to the coiling machine body via a rotating shaft. A clamping mechanism and a driving mechanism are installed on the upper end of the mounting plate. The clamping mechanism includes two support seats. The upper ends of the two support seats are fixedly connected to vertical plates via horizontal plates. Several threaded support rods are rotatably connected to the vertical plates at equal intervals. One end of each threaded support rod passes through the corresponding vertical plate and is fixedly connected to a gear at the end. The threaded support rod is connected to an elastic clamping plate via a threaded sleeve. The elastic clamping plate has an arc-shaped structure and several rubber rollers are rotatably connected to the elastic clamping plate.

[0007] The driving mechanism includes a guide rail, a servo motor is fixedly connected to the lower side wall of the guide rail, a ball screw is fixedly connected to the output end of the servo motor, a threaded plate with a threaded connection is sleeved on the lower outer side of the ball screw, a lifting plate is fixedly connected to the threaded plate, telescopic rods are slidably connected to both sides of the lifting plate, a rack is fixedly connected to the end of the telescopic rod, and a pressure plate is inserted into the outer wall of the lifting plate.

[0008] Specifically, a sliding plate is fixedly connected to the lower end of each of the two support seats, and the two sliding plates are slidably connected to the lower end of the mounting plate. A double-headed cylinder is fixedly connected between the two sliding plates, and the cylinder body of the double-headed cylinder is fixedly connected to the lower end of the mounting plate.

[0009] Specifically, the horizontal plate and the mounting plate are parallel and perpendicular to the corresponding vertical plate.

[0010] Specifically, each of the upright plates is fixedly connected to a limiting plate on its side wall, and the lower end of each limiting plate is slidably connected to the corresponding threaded sleeve side wall.

[0011] Specifically, the threaded plate and the lifting plate are slidably connected on the guide rail, and the width of the threaded plate and the lifting plate is wider than the width of the corresponding connecting block.

[0012] Specifically, the rack is slidably connected to the corresponding vertical plate sidewall and corresponds to the corresponding gear.

[0013] Specifically, the support frame is rotatably connected to the side wall of the coiling machine body and corresponds to one side of the mounting plate.

[0014] The present invention also provides a clamping method for ultra-long coils, comprising the following steps:

[0015] The first step is to start the multiple sets of guide rollers on the coiling machine to squeeze the pipe, causing the pipe to spiral upward and coil.

[0016] The second step is to place the lower end of the coil on the upper end of the two support seats, start the double-headed cylinder to drive the two support seats to move towards each other, clamp the lower end of the coil through the two horizontal plates, and press the upper end of the coil with the pressure plate.

[0017] The third step is to start the servo motor synchronously. The servo motor drives the ball screw to rotate, which in turn drives the threaded plate to lift the pressure plate and the coil synchronously. During the lifting process, the rack drives the gear to rotate, pressing the elastic clamp against the coil, making it difficult for the coil to shake.

[0018] Step 4: When collecting the finished product, rotate the support frame by 10 degrees and flip the mounting plate by 10 degrees. Rotate the coil from a vertical position to a horizontal position, loosen the elastic clamp, and remove the coil.

[0019] The beneficial effects of this invention are:

[0020] (1) This invention constructs an innovative technical solution that links the clamping mechanism and the driving mechanism. During operation, the support seat of the clamping mechanism will support the lower end of the coil. At the same time, the pressure plate of the driving mechanism presses down to apply constant and appropriate pressure to the upper end of the coil. When the coil starts to spiral upward, the servo motor, as the core power source, drives the pressure plate to move smoothly upward in a rhythm completely synchronized with the rising speed of the coil through the ball screw. It always maintains effective pressure on the upper end of the coil, ensuring that the coil will not shake easily. When the coil rises to a set height, the driving mechanism will drive the corresponding two elastic clamps to move in opposite directions along the guide rail to clamp the coil. Through this innovative design of multi-point clamping, from the basic fixation of the lower end of the coil, the continuous pressure of the upper end, to the segmented clamping in the middle, a comprehensive and multi-level stable support system is formed, which effectively eliminates the shaking problem of the coil during the spiral upward process and greatly improves the accuracy and stability of the coil processing or conveying operation.

[0021] (2) The elastic clamp of the present invention adopts an innovative anti-damage design. Multiple freely rotating rubber rollers are evenly distributed on its inner side. These rubber rollers are made of high elastic nitrile rubber. When the elastic clamp is driven by the driving mechanism and comes into contact with the surface of the coil, the rubber rollers can adjust the rotation direction in real time according to the spiral upward motion trajectory of the coil. Rolling friction replaces traditional sliding friction, which not only effectively avoids mechanical damage such as scratches and indentations caused by hard contact on the surface of the coil, but also ensures that the coil is not disturbed by additional resistance during the upward process and maintains smooth spiral motion. In addition, the elastic material of the rubber rollers can absorb vibration energy through its own deformation when the coil is displaced due to mechanical vibration or motion inertia, and control the vibration amplitude within a very small range, further improving the stability and reliability of the coil movement.

[0022] (3) The present invention adopts an integrated indexing mechanism design, which arranges the clamping mechanism and the driving mechanism on a mounting plate that can rotate around the rotation axis. It can realize the spatial posture conversion between the coil forming station and the transfer station. It can perform a 90-degree flipping action in the finished product collection stage, which facilitates the transfer of the finished product to the forming station. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the structure provided by the present invention;

[0025] Figure 2 This is a front sectional view provided for the present invention;

[0026] Figure 3 This is a top sectional view provided for the present invention;

[0027] Figure 4This is a schematic diagram of the structure when the coil is removed according to the present invention;

[0028] Figure 5 This is a schematic diagram of the installation structure of the telescopic rod on the lifting plate provided by the present invention;

[0029] Figure 6 This is a schematic diagram of the connection structure between the limiting plate and the threaded sleeve provided by the present invention;

[0030] Figure 7 This is a schematic diagram of the mounting plate structure provided by the present invention.

[0031] In the diagram: 1. Coiling machine body; 2. Mounting plate; 3. Clamping mechanism; 31. Support base; 32. Horizontal plate; 33. Vertical plate; 34. Threaded support rod; 35. Gear; 36. Threaded sleeve; 37. Elastic clamping plate; 38. Rubber roller; 39. Slide plate; 310. Double-headed cylinder; 311. Limiting plate; 4. Drive mechanism; 41. Guide rail; 42. Servo motor; 43. Ball screw; 44. Threaded plate; 45. Lifting plate; 46. Telescopic rod; 47. Pressure plate; 48. Rack; 5. Support frame. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] like Figures 1-7 As shown, the present invention provides the following technical solution:

[0034] Example 1: A clamping device for extra-long coils includes a coiling machine body 1, a mounting plate 2, and a support frame 5. The mounting plate 2 is horizontally arranged on the coiling machine body 1, and the support frame 5 is rotatably connected to the side wall of the coiling machine body 1 and corresponds to one side of the mounting plate 2.

[0035] When in use, press the mounting plate 2 to ensure that the mounting plate 2 has normal pressure resistance. Rotate the support frame 5 to a position that is close to the coiling machine body 1 to prevent the support frame 5 from opening and obstructing the movement of personnel around the device. Connect the power supply and start the coiling machine body 1. Insert one end of the prepared pipe into the guide roller of the coiling machine body 1. The rotating guide roller of the coiling machine body 1 will bend the pipe and gradually form a spiral shape.

[0036] Example 2: The technical solution of this example, which differs from that of Example 1, is as follows: One side of the mounting plate 2 is rotatably connected to the coil machine body 1 via a rotating shaft. The upper end of the mounting plate 2 is equipped with a clamping mechanism 3 and a driving mechanism 4. The clamping mechanism 3 includes two support seats 31. The upper ends of the two support seats 31 are fixedly connected to a vertical plate 33 via a horizontal plate 32. The horizontal plate 32 is parallel to the mounting plate 2 and perpendicular to the corresponding vertical plate 33. Several threaded support rods 34 are rotatably connected at equal intervals on the vertical plate 33. One end of the threaded support rod 34 passes through the corresponding vertical plate 33 and the end is fixedly connected to a gear 35. The threaded support rod 34 is connected to an elastic clamping plate 37 via a threaded sleeve 36. The elastic clamping plate has an arc-shaped structure. Several rubber rollers 38 are rotatably connected to the elastic clamping plate 37.

[0037] The drive mechanism 4 includes a guide rail 41. A servo motor 42 is fixedly connected to the lower side wall of the guide rail 41. A ball screw 43 is fixedly connected to the output end of the servo motor 42. A threaded plate 44 with a threaded connection is sleeved on the lower outer side of the ball screw 43. A lifting plate 45 is fixedly connected to the threaded plate 44. Telescopic rods 46 are slidably connected to both sides of the lifting plate 45. A rack 48 is fixedly connected to the end of the telescopic rod 46. The rack 48 is slidably connected to the side wall of the corresponding vertical plate 33 and corresponds to the corresponding gear 35. A pressure plate 47 is inserted into the outer wall of the lifting plate 45.

[0038] Specifically, the lower ends of the two support seats 31 are fixedly connected to the slide plates 39, and the two slide plates 39 are slidably connected to the lower end of the mounting plate 2. A double-headed cylinder 310 is fixedly connected between the two slide plates 39. The cylinder body of the double-headed cylinder 310 is fixedly connected to the lower end of the mounting plate 2 and can be used to drive the two support seats 31 to move and clamp the lower end of the coil.

[0039] Specifically, a limiting plate 311 is fixedly connected to the side wall of the upright plate 33. The lower end of the limiting plate 311 is slidably connected to the side wall of the corresponding threaded sleeve 36. The setting of the limiting plate 311 can ensure that the threaded sleeve 36 will not rotate with the threaded support rod 34.

[0040] Specifically, the threaded plate 44 and the lifting plate 45 are slidably connected to the guide rail 41. The width of the threaded plate 44 and the lifting plate 45 is wider than the width of the corresponding connecting block, ensuring that the threaded plate 44 and the lifting plate 45 can slide stably on the guide rail 41.

[0041] In use, when the coil begins to spiral upward, its lower end rests against the upper ends of the two support seats 31. The double-headed cylinder 310 is activated, driving the two support seats 31 to move the horizontal plates 32 towards each other, clamping the lower end of the coil. When the upper end of the coil rests against the lower end of the pressure plate 47, the servo motor 42 is activated, driving the ball screw 43 to rotate. The ball screw 43 drives the threaded plate 44, which in turn drives the lifting plate 45 to rise. The threaded plate 44 and the lifting plate 45 will then meet on the guide rail 4. The coil slides upwards without wobbling. The servo motor 42 is connected to the control structure of the coil machine body 1, allowing the servo motor 42's speed to be adjusted synchronously according to the coil's rising speed, achieving closed-loop speed control. This enables the pressure plate 47 to rise synchronously with the coil, continuously clamping its upper and lower ends. The sponge layer on the pressure plate 47 and horizontal plate 32 ensures it won't scratch the outer wall of the coil. Simultaneously, it drives the rack 48 to slide on the vertical plate 33. When the coil spirals upwards to a certain height, the rack 48 drives two corresponding gears 35. Gear 35 drives threaded support rod 34 to rotate, and threaded support rod 34 drives threaded sleeve 36 to move elastic clamping plate 37 towards the coil until the multiple rubber rollers 38 are pressed against the coil. Because the elastic clamping plate 37 has an arc-shaped structure and is made of spring steel, it has a certain deformation capacity. The elastic clamping plate 37 will gradually bend outward according to the diameter of the coil, increasing the arc, to ensure that the rubber rollers 38 set on the inner side of the elastic clamping plate 37 can press against the coil. During this process, the limiting plate 311 will lock the threaded sleeve. 36, which prevents the threaded sleeve 36 from rotating according to the threaded support rod 34, while the rubber roller 38 is made of high elastic nitrile rubber and is mounted on the elastic clamping plate 37 at both ends through high-precision deep groove ball bearings, forming a low-friction rotating pair. It will adjust the rotation direction according to the spiral upward trajectory of the coil. When the coil causes displacement fluctuations due to mechanical vibration or motion inertia, the rubber roller 38 can absorb vibration energy through its own deformation and the slight displacement of the deep groove ball bearings, controlling the vibration amplitude within a very small range and improving the stability of the coil movement;

[0042] When collecting the finished product, rotate the support frame 5 90 degrees in the opposite direction and flip the mounting plate 2 to rotate the coil from a vertical state to a horizontal state. The support frame 5 will support the vertical plate 33 located below. Pull the pressure plate 47 off the lifting plate 45, so that the servo motor 42 rotates the ball screw 43 in the opposite direction and reverses the gear 35, so that the middle of the coil will not be clamped. Then the coil can be removed, and the mounting plate 2 can be flipped back to its original position. Rotate the support frame 5 back to continue working.

[0043] The present invention also provides a clamping method for ultra-long coils, comprising the following steps:

[0044] Step 1: Start the multiple sets of guide rollers on the coiling machine body 1 to squeeze the pipe, causing the pipe to spiral upward and coil.

[0045] The second step is to place the lower end of the coil on the upper end of the two support seats 31, start the double-headed cylinder 310, drive the two support seats 31 to move towards each other, clamp the lower end of the coil through the two horizontal plates 32, and press the upper end of the coil with the pressure plate 47.

[0046] The third step is to start the servo motor 42 synchronously. The servo motor 42 drives the ball screw 43 to rotate, which in turn drives the threaded plate 44 to drive the pressure plate 47 and the coil to rise synchronously. During the rising process, the rack 48 drives the gear 35 to rotate, pressing the elastic clamp 37 against the coil, making it difficult for the coil to shake.

[0047] Step 4: When collecting the finished product, rotate the support frame 5 by 90 degrees and flip the mounting plate 2 by 90 degrees. Rotate the coil from a vertical position to a horizontal position, loosen the elastic clamp 37, and remove the coil.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping device for extra-long coils, comprising a coiling machine body (1), a mounting plate (2) and a support frame (5), wherein the mounting plate (2) is horizontally arranged on the coiling machine body (1). Its features are: One side of the mounting plate (2) is rotatably connected to the coil machine body (1) via a rotating shaft. The upper end of the mounting plate (2) is equipped with a clamping mechanism (3) and a driving mechanism (4). The clamping mechanism (3) includes two support seats (31). The upper ends of the two support seats (31) are fixedly connected to a vertical plate (33) via a horizontal plate (32). Several threaded support rods (34) are rotatably connected at equal intervals on the vertical plate (33). One end of the threaded support rod (34) passes through the corresponding vertical plate (33) and the end is fixedly connected to a gear (35). The threaded support rod (34) is connected to an elastic clamping plate (37) via a threaded sleeve (36). The elastic clamping plate (37) has an arc-shaped structure. Several rubber rollers (38) are rotatably connected to the elastic clamping plate (37). The drive mechanism (4) includes a guide rail (41), a servo motor (42) is fixedly connected to the lower side wall of the guide rail (41), a ball screw (43) is fixedly connected to the output end of the servo motor (42), a threaded plate (44) with threaded connection is sleeved on the lower outer side of the ball screw (43), a lifting plate (45) is fixedly connected to the threaded plate (44), a telescopic rod (46) is slidably connected to both sides of the lifting plate (45), a rack (48) is fixedly connected to the end of the telescopic rod (46), and a pressure plate (47) is inserted into the outer wall of the lifting plate (45). The lower ends of the two support seats (31) are fixedly connected to the slide plates (39), the two slide plates (39) are slidably connected to the lower end of the mounting plate (2), and a double-headed cylinder (310) is fixedly connected between the two slide plates (39). The cylinder body of the double-headed cylinder (310) is fixedly connected to the lower end of the mounting plate (2). The horizontal plate (32) and the mounting plate (2) are parallel and perpendicular to the corresponding vertical plate (33); Limiting plates (311) are fixedly connected to the side walls of the upright plate (33), and the lower ends of the limiting plates (311) are slidably connected to the side walls of the corresponding threaded sleeves (36). The support frame (5) is rotatably connected to the side wall of the coil machine body (1) and corresponds to one side of the mounting plate (2).

2. The clamping device for ultra-long coils according to claim 1, characterized in that: The threaded plate (44) and the lifting plate (45) are slidably connected on the guide rail (41), and the width of the threaded plate (44) and the lifting plate (45) is wider than the width of the corresponding connecting block.

3. The clamping device for ultra-long coils according to claim 1, characterized in that: The rack (48) is slidably connected to the side wall of the corresponding vertical plate (33) and corresponds to the corresponding gear (35).

4. A clamping method for ultra-long coils, the method being implemented using the clamping device for ultra-long coils as described in any one of claims 1-3, characterized in that, Includes the following steps: Step 1: Start the multiple sets of guide rollers of the coiling machine body (1) to squeeze the pipe, so that the pipe spirals up and coils; The second step is to place the lower end of the coil on the upper end of the two support seats (31), start the double-headed cylinder (310), drive the two support seats (31) to move towards each other, clamp the lower end of the coil through the two horizontal plates (32), and press the upper end of the coil with the pressure plate (47). The third step is to start the servo motor (42) synchronously. The servo motor (42) drives the ball screw (43) to rotate, which in turn drives the threaded plate (44) to drive the pressure plate (47) and the coil to rise synchronously. During the rise, the rack (48) drives the gear (35) to rotate, and presses the elastic clamp (37) against the coil, making it difficult for the coil to shake. Step 4: When collecting the finished product, rotate the support frame (5) 90 degrees and flip the mounting plate (2) 90 degrees. Rotate the coil from the vertical state to the horizontal state, loosen the elastic clamp (37), and remove the coil.

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