Pipe coiling device

Abstract

The utility model discloses a pipe coiling device, which belongs to the technical field of pipe coiling, is used for spiral pipe coiling of steel pipes, and comprises a support frame, a linear motion mechanism, a rotary motion mechanism, a limiting mechanism, a central shaft sleeve and a locking mechanism, one end of the steel pipe is connected with one end of the central shaft sleeve through a limiting mechanism and is locked through a locking mechanism; the linear motion mechanism and the rotary motion mechanism are used for driving the center shaft sleeve to do linear motion and rotate around the center shaft at the same time, and spiral pipe coiling of the steel pipe is achieved. The pipe coiling device can effectively solve the problems that in the prior art, a spiral pipe machined by a traditional pipe coiling machine is large in coaxiality deviation, and the strict requirement of high-precision equipment for pipe precision is difficult to meet; the steel pipe is easy to pop up accidentally in the machining process, and serious potential safety hazards are caused to operators and peripheral equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline coils. Specifically, it relates to a coil device. Background Art

[0002] In the current industrial manufacturing field, as an important processing equipment, the coil winding machine is widely used in multiple industries such as refrigeration, air conditioning, and chemical pipeline systems. Its main function is to process metal pipes (such as copper pipes, steel pipes, etc.) into coiled shapes to meet the installation and connection requirements of different equipment. However, with the progress of technology and the improvement of industrial standards, the market's requirements for the processing accuracy of coil winding machines are becoming increasingly strict. Especially in the application scenarios of high-precision equipment, the accuracy problems of traditional coil winding machines during the processing process are becoming more prominent.

[0003] When traditional coil winding machines process spiral pipes, they generally face the problem that it is difficult to accurately control the overall coaxiality. As one of the important indicators for measuring the processing quality of spiral pipes, coaxiality is directly related to the performance and service life of the final product. Due to deficiencies in the structural design, transmission system, and control system of traditional coil winding machines, the coaxiality deviation of the processed spiral pipes is relatively large, making it difficult to meet the strict requirements of high-precision equipment for pipe accuracy. This not only limits the application scope of coil winding machines in the high-end manufacturing field but also increases the difficulty and cost of subsequent installation and debugging. In addition, safety performance is also one of the important problems that need to be solved urgently for current coil winding machines. Especially when using a pipe bender to process hard materials such as steel pipes, due to the rigidity of the material itself and stress concentration during the processing process, the steel pipe is prone to accidental ejection during the processing process, posing a serious safety hazard to operators and surrounding equipment. This safety hazard not only threatens the life safety of operators but also affects the normal operation of the production line and the economic benefits of the enterprise.

[0004] For example, in the Chinese utility model patent with the document number CN213356526U, a semi-automatic stainless steel pipe coil winding machine, during the coiling process of the steel pipe, the axial supply is achieved by workers tightly holding the stainless steel pipe and continuously advancing it forward, and it cannot guarantee the accuracy of axial feeding. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a coil device for the above-mentioned deficiencies to solve the problems that the coaxiality deviation of the spiral pipes processed by traditional coil winding machines in the prior art is relatively large and it is difficult to meet the strict requirements of high-precision equipment for pipe accuracy; the steel pipe is prone to accidental ejection during the processing process, posing a serious safety hazard to operators and surrounding equipment, etc. To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A coil pipe device for the spiral coiling of steel pipes, comprising a support frame, a linear motion mechanism, a rotary motion mechanism, a limiting mechanism, a central shaft sleeve and a locking mechanism; one end of the steel pipe is connected to one end of the central shaft sleeve through the limiting mechanism and locked by the locking mechanism; the linear motion mechanism and the rotary motion mechanism are used to drive the central shaft sleeve to perform a linear motion while rotating around the center axis, so as to realize the spiral coiling of the steel pipe.

[0007] Further, the linear motion mechanism comprises a lead screw base, a lead screw and a lead screw slider; the lead screw base is fixed on the support frame; the lead screw is fixed on the lead screw base; the lead screw slider is connected to the lead screw in a mating manner; the lead screw slider is connected to the central shaft sleeve in a mating manner.

[0008] Further, the rotary motion mechanism comprises a driving mechanism, a driving wheel and a driven wheel; the driving mechanism is fixed on the support frame; the output end of the driving mechanism drives the driving wheel to rotate; the driven wheel meshes with the driving wheel; the driven wheel is respectively fixed to the lead screw slider and the central shaft sleeve, so as to drive the central shaft sleeve to rotate and drive the lead screw slider to rotate on the lead screw.

[0009] Further, the driving mechanism comprises a servo motor and a planetary reducer; the servo motor is connected to the planetary reducer, and the output end of the planetary reducer is connected to the driving wheel.

[0010] Further, an inner ring of a bearing is connected to the lead screw slider, and an outer ring of the bearing is fixedly connected to a connecting plate; the connecting plate is fixedly connected to the servo motor, driving the servo motor to perform a linear motion synchronously with the lead screw slider.

[0011] Further, a linear bearing base is fixedly connected to the support frame; a smooth shaft is fixedly connected to the linear bearing base; a bearing slider is connected to the smooth shaft in a mating manner; the bearing slider is fixedly connected to the servo motor; the smooth shaft is arranged parallel to the lead screw.

[0012] Further, the limiting mechanism comprises a group of pressing wheels and a group of rollers; a group of the pressing wheels are rotatably connected to the support frame and arranged vertically; the gap between the two pressing wheels is used for the steel pipe to pass through, restricting the movement of the steel pipe in the vertical direction; a group of the rollers are rotatably connected to the support frame and are respectively arranged on both sides of the pressing wheels, restricting the movement of the steel pipe in the horizontal direction.

[0013] Further, the locking mechanism comprises a locking pressing plate fixed to one end of the central shaft sleeve; the locking pressing plate is used to fix one end of the steel pipe to the central shaft sleeve.

[0014] Further, it further comprises a motor limiting device; the motor limiting device comprises a photoelectric sensor fixed to the support frame and a baffle connected to the servo motor; the photoelectric sensor is arranged at the starting point and the ending point of the moving stroke of the servo motor.

[0015] Furthermore, a drag chain is provided on the servo motor to limit the moving distance of the servo motor.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. The present utility model provides a coil pipe device. The linear supply of the central shaft sleeve is realized through the cooperation of the lead screw and the lead screw slider, ensuring the accuracy of the axial feed. At the same time, a servo motor is provided, and the rotational motion and axial feed motion of the central shaft sleeve are completed through the gear cooperation and the lead screw drive cooperation, solving the problem of the coaxiality accuracy of the spiral pipe. With this device, the dimensional accuracy of the processed spiral pipe can meet the requirements;

[0018] 2. The present utility model provides a coil pipe device. A limiting mechanism is provided and a locking mechanism is provided on the central shaft sleeve to ensure the stable progress of the steel pipe during the spiral processing, preventing the steel pipe from popping out under the action of its own stress and other factors, and avoiding safety problems. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a sectional view of the present utility model;

[0021] In the drawings: 1, steel pipe; 2, support frame; 3, central shaft sleeve; 4, lead screw seat; 5, lead screw; 6, lead screw slider; 7, driving wheel; 8, driven wheel; 9, servo motor; 10, planetary reducer; 11, optical axis; 12, pressing wheel; 13, roller; 14, locking pressing plate; 15, drag chain. Detailed Embodiments

[0022] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments, but the present utility model is not limited to the following embodiments.

[0023] Embodiment 1:

[0024] See the appendix Figures 1-2。A coil pipe device includes a support frame 2 which serves as the support for the overall device. A central shaft sleeve 3 is respectively arranged on the support frame 2. The steel pipe 1 is spirally wound around the central shaft sleeve 3 to complete the coiling of the steel pipe 1. A rotary motion mechanism is arranged on the support frame 2 to drive the central shaft sleeve 3 to rotate self - sufficiently, and complete the rotation process in the spiral motion of the steel pipe 1. Specifically, the rotary motion mechanism includes a driving mechanism, a driving wheel 7 and a driven wheel 8. The driving wheel 7 meshes with the driven wheel 8. The driving wheel 7 outputs drive through the driving mechanism. The central shaft sleeve 3 is welded to the driven wheel 8 and arranged coaxially, so as to realize that the driving mechanism drives the driven wheel 8 and the central shaft sleeve 3 to rotate self - sufficiently. The driving mechanism is preferably a combination of a servo motor 9 and a planetary reducer 10. The output end of the servo motor 9 is connected to the planetary reducer 10, and the output end of the planetary reducer 10 is connected to the driving wheel 7.

[0025] The linear motion mechanism is arranged on the support frame 2 to drive the central shaft sleeve 3 to perform linear motion. Specifically, the linear motion mechanism includes a lead screw base 4, a lead screw 5 and a lead screw slider 6. Among them, the lead screw base 4 is fixed on the support frame 2 by means of fixed connection such as screw connection. The lead screw 5 is fixed on the lead screw base 4, and the lead screw slider 6 is connected to the lead screw 5 in a mating manner. The linear motion along the axial direction of the lead screw 5 is realized by the rotation of the lead screw slider 6. One side of the lead screw slider 6 is connected with a slider connecting seat, which rotates and moves axially along the lead screw 5. There is a bearing between the slider connecting seat and the driven wheel 8, and the inner ring of the bearing is fixedly connected. At the same time, to ensure that the slider connecting seat, the bearing and the driven wheel 8 do not interfere with the lead screw 5, the diameter of the through hole in the middle of the slider connecting seat, the bearing and the driven wheel 8 is set to be larger than the diameter of the lead screw 5. The above structure is arranged so that when the driven wheel 8 rotates, it will drive the central shaft sleeve 3 on one side to rotate, and at the same time drive the inner ring of the bearing, the slider connecting seat and the lead screw slider 6 on the other side to rotate in sequence. The rotation of the lead screw slider 6 makes the lead screw slider 6 perform linear motion on the lead screw 5. At this time, the driven wheel 8 will be separated from the driving wheel 7, resulting in the interruption of power transmission. Further, a linear bearing base is arranged on the support frame 2, which is fixedly connected with a smooth shaft 11. The smooth shaft 11 is arranged on one side of the lead screw 5 and is parallel to it. A bearing slider that moves linearly along the smooth shaft 11 is connected to the smooth shaft 11 in a mating manner. The servo motor 9 is installed through a motor base. The bearing slider is fixedly connected with the motor base. At the same time, the motor base is fixedly connected with the bearing mounting seat through a connecting plate, and the bearing mounting seat is fixedly connected with the outer ring of the bearing. And the initial position ensures the meshing state of the driving wheel 7 and the driven wheel 8. Through the arrangement of the above structure, when the servo motor 9 is started, the power is sequentially transmitted to the lead screw slider 6 through the planetary reducer 10, the driving wheel 7, the driven wheel 8, the bearing and the slider connecting seat. During the rotation process of the lead screw slider 6, it will drive the bearing, the driven wheel 8, the central shaft sleeve 3 and the bearing mounting seat to move linearly along the lead screw 5 in turn. At this time, the servo motor 9 realizes linear motion along the smooth shaft 11 through the connection between the bearing mounting seat and the motor base, driving the driving wheel 7 to move synchronously with the driven wheel 8, and always maintaining power output. And the central shaft sleeve 3 performs linear motion and rotational motion at the same time, that is, a spiral motion can be completed at a certain point on the central shaft sleeve 3.

[0026] A limiting mechanism for the steel pipe 1 is provided on the support frame 2. Specifically, it includes two roller cylinders 13 and two pressing wheels 12. The two pressing wheels 12 are arranged vertically and are rotatably connected to the support frame 2 through structures such as bearings. The gap between the two pressing wheels 12 is used for the steel pipe 1 to pass through, restricting the up and down movement of the steel pipe 1 and keeping the upper top surface or the lower top surface of the central shaft sleeve 3 at the same horizontal plane as the gap between the two pressing wheels 12; the two roller cylinders 13 are also rotatably connected to the support frame 2 through structures such as bearings. The two roller cylinders 13 are respectively arranged on the front and rear sides of the pressing wheels 12, that is, along the direction in which the steel pipe 1 enters the pressing wheels 12, and the two roller cylinders 13 are respectively located on the left and right sides of the pressing wheels 12, and their rolling surfaces are in contact with the steel pipe 1, as shown in the appendix Figure 1As shown, the left and right movement of the steel pipe 1 is restricted. The two rollers 13 and the two pressure wheels 12 ensure that the steel pipe 1 does not deviate during the feeding process.

[0027] The linear movement stroke of the central shaft sleeve 3 is restricted to ensure that the size of the coiled pipe of the steel pipe 1 meets the requirements. A stop piece is arranged below the motor base, and photoelectric sensors are arranged at both the starting point and the ending point of the movement of the servo motor 9 on the support frame 2. Further, a controller is respectively electrically connected to the photoelectric sensors and the servo motor 9. During the movement of the servo motor 9, when the stop piece touches the photoelectric sensor at the starting point and the photoelectric sensor at the ending point, the photoelectric sensors send electrical signals to the controller, and the controller controls the servo motor 9 to stop rotating. The above control logic can be realized through the prior art. Ensure that the servo motor 9 always moves within the limited stroke.

[0028] A locking pressure plate 14 is arranged on the end face of the central shaft sleeve 3 to fix one end of the steel pipe 1 on the central shaft sleeve 3. During the movement of the central shaft sleeve 3, the steel pipe 1 is driven to make a spiral movement to complete the spiral coiling. The locking pressure plate 14 can be a buckle structure or a threaded connection structure, as long as it can realize locking and unlocking. Specifically, both ends of the locking pressure plate 14 are connected to the central shaft sleeve 3 through screws, and the steel pipe 1 is used to pass through between the screws at both ends. By screwing the screws, the locking pressure plate 14 moves downward to press the steel pipe 1 tightly on the central shaft sleeve 3.

[0029] A drag chain 15 is also arranged on the support frame 2. One end of the drag chain 15 is fixed on the support frame 2, and the other end is connected to the servo motor 9. While protecting the wires, it can further restrict the movement of the servo motor 9 and play a secondary role in preventing the movement of the servo motor 9 from exceeding the stroke range.

[0030] The working principle of the present utility model: First, align one end of the central shaft sleeve 3 with the limiting mechanism, pass one end of the steel pipe 1 through between the two pressure wheels 12 and between the two rollers 13, and the steel pipe 1 is in contact with both the two pressure wheels 12 and the two rollers 13. Then, after the steel pipe 1 passes through, it continues to pass through the locking pressure plate 14, and the screws are screwed to fix one end of the steel pipe 1 at the end of the central shaft sleeve 3. Then, the controller is used to control the servo motor 9 to start, and the central shaft sleeve 3 starts to make a linear movement and a self-rotation movement, driving the steel pipe 1 to gradually form a spiral coiled pipe on the central shaft sleeve 3. When the servo motor 9 moves to the end point, it automatically stops after being controlled by the signal of the photoelectric sensor. At this time, the operator unlocks the locking pressure plate 14 and starts the servo motor 9 to rotate in the reverse direction. A baffle plate with a through hole is arranged on the support frame 2 between the central shaft sleeve 3 and the driven wheel. The diameter of the through hole is slightly larger than that of the central shaft sleeve 3 and smaller than the diameter of the steel pipe 1 after spiral coiling. When the servo motor 9 rotates in the reverse direction and moves to the starting point, it automatically stops after being controlled by the signal of the photoelectric sensor. During the movement of the central shaft sleeve 3 driving the spiral coiled pipe, restricted by the baffle plate, the central shaft sleeve 3 gradually disengages from the spiral coiled pipe to obtain the final spiral coiled pipe.

[0031] The above are only the preferred embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A coil device for a spiral coil of a steel pipe (1), characterized in that: It includes a support frame (2), a linear motion mechanism, a rotary motion mechanism, a limiting mechanism, a central shaft sleeve (3) and a locking mechanism; one end of the steel pipe (1) is connected to one end of the central shaft sleeve (3) through the limiting mechanism and locked by the locking mechanism; the linear motion mechanism and the rotary motion mechanism are used to drive the central shaft sleeve (3) to perform linear motion while rotating around the center axis, so as to realize the spiral coiling of the steel pipe (1).

2. The coiled pipe device according to claim 1, characterized in that: The linear motion mechanism includes a lead screw seat (4), a lead screw (5) and a lead screw slider (6); the lead screw seat (4) is fixed on the support frame (2); the lead screw (5) is fixed on the lead screw seat (4); the lead screw slider (6) is connected to the lead screw (5) in a mating manner; the lead screw slider (6) is connected to the central shaft sleeve (3) in a mating manner.

3. The coiled pipe device according to claim 2, wherein: The rotary motion mechanism includes a driving mechanism, a driving wheel (7) and a driven wheel (8); the driving mechanism is fixed on the support frame (2); the output end of the driving mechanism drives the driving wheel (7) to rotate; the driven wheel (8) meshes with the driving wheel (7); the driven wheel (8) is fixedly connected to the lead screw slider (6) and the central shaft sleeve (3) respectively, so as to drive the central shaft sleeve (3) to rotate and drive the lead screw slider (6) to rotate on the lead screw (5).

4. The coiled pipe device according to claim 3, wherein: The driving mechanism includes a servo motor (9) and a planetary reducer (10); the servo motor (9) is connected to the planetary reducer (10), and the output end of the planetary reducer (10) is connected to the driving wheel (7).

5. A coil device according to claim 4, characterized in that: A bearing inner ring is connected to the lead screw slider (6), and a connecting plate is fixedly connected to the bearing outer ring; the connecting plate is fixedly connected to the servo motor (9), driving the servo motor (9) to perform linear motion synchronously with the lead screw slider (6).

6. The coiled pipe device according to claim 5, characterized in that: A linear bearing base is fixedly connected to the support frame (2); a smooth shaft (11) is fixedly connected to the linear bearing base; a bearing slider is connected to the smooth shaft (11) in a mating manner; the bearing slider is fixedly connected to the servo motor (9); the smooth shaft (11) is arranged parallel to the lead screw (5).

7. A coil device according to claim 1, characterized in that: The limiting mechanism includes a set of pressing wheels (12) and a set of rollers (13); a set of the pressing wheels (12) are rotatably connected to the support frame (2) and arranged vertically; the gap between the two pressing wheels (12) is used for the steel pipe (1) to pass through, restricting the movement of the steel pipe (1) in the vertical direction; a set of the rollers (13) are rotatably connected to the support frame (2) and are respectively arranged on both sides of the pressing wheels (12), restricting the movement of the steel pipe (1) in the horizontal direction.

8. A coiled tube device according to claim 1, characterized in that: The locking mechanism includes a locking pressure plate (14) fixed to one end of the central shaft sleeve (3); the locking pressure plate (14) is used to fix one end of the steel pipe (1) to the central shaft sleeve (3).

9. The coiled pipe device according to claim 4, characterized in that: It also includes a motor limiting device; the motor limiting device includes a photoelectric sensor fixed on the support frame (2) and a baffle connected to the servo motor (9); the photoelectric sensor is arranged at the starting point and the ending point of the moving stroke of the servo motor (9).

10. A coil device according to claim 4, characterized in that: A drag chain (15) is arranged on the servo motor (9) to limit the moving distance of the servo motor (9).

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