A traction mechanism between pipe stretching machine units

Abstract

A traction mechanism between pipe stretching units includes a base, a cantilever is installed on the base, a driving component for driving the cantilever to rotate is provided on the base, a traction component is provided at the end of the cantilever, the traction component includes a fixed seat, a first cylinder, and a clamping device, the fixed seat is fixed to the end of the cantilever, the first cylinder is fixed to one side of the fixed seat, the clamping device is rotatably connected with the fixed seat, the clamping device includes a support frame, a second cylinder and a clamp assembly are installed on the support frame, the piston rod of the second cylinder is connected to the clamp assembly and drives the clamp assembly to open or close, the piston rod of the first cylinder is connected to the support frame, the extension and retraction of the piston rod of the first cylinder can drive the support frame to rotate relative to the fixed seat, and the rotation center line of the support frame is perpendicular to the clamping center line of the clamp assembly. The present invention facilitates the traction of pipes and improves the transfer and docking efficiency of pipes between stretching units.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe stretching, in particular to a traction mechanism between pipe stretching machine units. Background Art

[0002] When producing long pipes, generally, thick and short pipes are produced first to shorten the process of producing pipe blanks, and then the pipes are drawn using a stretching machine to produce thin and long pipes, which greatly extends the length of the pipes.

[0003] In the current production of pipe fittings, in order to improve the stretching efficiency of pipe fittings, two stretching operations are performed in one set of processing. During the two stretching processes, the end of the pipe fitting after the first stretching needs to be connected to the input end of the second stretching. The original method used in this process is generally manual traction and docking, but the efficiency is low. In addition, since the pipe fittings will heat up and be easily deformed after the first stretching, manual traction may be dangerous and easy to cause errors.

[0004] Therefore, it is very necessary to design a device that can automatically carry out the traction, transfer and docking of pipe fittings in the stretching machine assembly. Summary of the invention

[0005] The object of the present invention is to provide a traction mechanism between pipe stretching machine units, which is convenient for traction of pipes and improves the efficiency of docking between different parts of pipes.

[0006] The present invention provides a traction mechanism between pipe stretching machine units, and the technical solution to solve the technical problem includes a base, a cantilever is installed on the base, a driving component for driving the cantilever to rotate is provided on the base, a traction component is provided at the end of the cantilever, and the traction component includes a fixed seat, a first cylinder, and a clamping device, the fixed seat is fixed to the end of the cantilever, the first cylinder is fixed to one side of the fixed seat, the clamping device is rotatably connected to the fixed seat, the clamping device includes a support frame, a second cylinder and a clamp assembly are installed on the support frame, the piston rod of the second cylinder is connected to the clamp assembly and drives the clamp assembly to open or close, the piston rod of the first cylinder is connected to the support frame, and the extension and retraction of the piston rod of the first cylinder can drive the support frame to rotate relative to the fixed seat, and the rotation center line of the support frame and the clamping center line of the clamp assembly are perpendicular to each other.

[0007] Preferably, a pin is installed on the support frame, and the support frame is rotatably connected to the fixing seat via the pin.

[0008] Preferably, the clamp assembly includes a left clamp, a right clamp, and a support plate. The number of the support plates is two and they are fixed at an interval on the lower part of the support frame. The left clamp and the right clamp are installed between the two support plates and arranged opposite to each other. The left clamp is provided with a rotating shaft and a left gear, and the right clamp is provided with a rotating shaft and a right gear. The rotating shaft is rotatably connected to the support plate, and the left gear and the right gear are meshed with each other.

[0009] Preferably, a slide groove located above the support frame is opened on the end face of one side of the fixed seat mounting support frame, a positioning block is installed in the slide groove, a plurality of spaced positioning bolts are installed on the positioning block, and the non-nut end of the positioning bolt is pressed against the side of the support frame.

[0010] Preferably, the driving component includes a driving cylinder, a rack, and a main gear, the main gear is fixedly connected to the rotating shaft of the cantilever, the rack is installed on the base and meshingly connected to the main gear, the driving cylinder is fixed on the base and the telescopic end is connected to the rack.

[0011] Preferably, the base is provided with induction switches located at both ends of the rack, and the induction switches detect the position of the rack and send out control signals to control the telescopic action of the driving cylinder.

[0012] In summary, the technical solution of the present invention has at least the following beneficial effects:

[0013] 1. The swingable cantilever is designed to achieve the traction of the pipe fittings and facilitate the docking of the pipe fittings;

[0014] 2. By setting up the first cylinder and the second cylinder using the electronic control system, the pipe can be clamped automatically;

[0015] 3. By designing a rotatable support frame, it can adapt to the inclination and deformation of the pipe fittings during actual use, better clamp the pipe fittings, and reduce damage to the pipe fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is the front view of the overall structure of the present invention;

[0018] Figure 2 It is a top view of the overall structure of the present invention;

[0019] Figure 3The traction component of the present invention is partially enlarged Figure I ;

[0020] Figure 4 The traction component of the present invention is partially enlarged Figure II .

[0021] In the picture;

[0022] 1. Base; 2. Cantilever; 3. Fixed seat; 4. First cylinder; 5. Support frame; 6. Second cylinder; 7. Pin shaft; 8. Left clamp; 9. Right clamp; 10. Support plate; 11. Left gear; 12. Right gear; 13. Slide; 14. Positioning block; 15. Positioning bolt; 16. Driving cylinder; 17. Rack; 18. Main gear; 19. Induction switch. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present invention provides a traction mechanism between pipe stretching machine units, such as Figure 1-4 As shown, it includes a base 1, a cantilever 2 is installed on the base 1, and a driving component for driving the cantilever 2 to rotate is provided on the base 1. One embodiment of the driving component in the present invention is; the driving component includes a driving cylinder 16, a rack 17, and a main gear 18, the main gear 18 is fixedly connected to the rotating shaft of the cantilever 2, the rack 17 is installed on the base 1 and meshed with the main gear 18, the driving cylinder 16 is fixed on the base 1 and the telescopic end is connected to the rack 17; as shown in the attached Figure 2As shown, during the working process, the driving cylinder 16 will drive the rack 17 to reciprocate, and then the rack 17 will drive the main gear 18 meshing with it to rotate. Since the main gear 18 is fixedly connected to the rotating shaft of the cantilever 2, the main gear 18 will drive the cantilever 2 to rotate together to realize the transfer of the pipe fitting. In actual use, in order to further improve the degree of automation and ensure stable operation, the present invention is provided with a sensing switch 19 located at both ends of the rack 17 on the base 1. The sensing switch 19 detects the position of the rack 17 and sends a control signal to control the telescopic action of the driving cylinder 16. The two sensing switches 19 are set at the extreme positions of the movement of the rack 17 to both ends. When the end of the rack 17 moves to this position, the sensing switch 19 will give a control signal feedback to the control system. The control system will control the action of the driving cylinder 16 through the electronic control system to change the telescopic state, so as to avoid the disengagement of the rack 17 and the gear due to the excessive movement of the rack 17 during the working process, thereby ensuring the stability of the work.

[0025] The present invention provides a traction component at the end of the cantilever 2, and the traction component includes a fixed seat 3, a first cylinder 4, and a clamping device. The fixed seat 3 is fixed to the end of the cantilever 2, and the first cylinder 4 is fixed to one side of the fixed seat 3. The clamping device is rotatably connected to the fixed seat 3, and the clamping device is used to clamp the end of the fixed pipe fitting, wherein the clamping device includes a support frame 5, and a second cylinder 6 and a clamp assembly are installed on the support frame 5. The piston rod of the second cylinder 6 is connected to the clamp assembly and drives the clamp assembly to open or close. One embodiment of the clamp assembly in the present invention is; the clamp assembly includes a left clamp 8, a right clamp 9, and a support plate 10. The number of the support plates 10 is two and they are fixed to the lower part of the support frame 5 at intervals. The left clamp 8 and the right clamp 9 are installed between the two support plates 10 and are arranged relatively. The left clamp 8 A rotating shaft and a left gear 11 are provided on the right clamp 9, and a rotating shaft and a right gear 12 are provided on the right clamp 9. The rotating shaft is rotatably connected to the support plate 10, and the left gear 11 and the right gear 12 are meshed with each other. It can be seen that when in use, the second cylinder 6 will drive one of the left clamp 8 and the right clamp 9 to rotate by telescoping. During the rotation process, since the left gear 11 and the right gear 12 are meshed with each other, the synchronous opening and closing of the left clamp 8 and the right clamp 9 can be achieved. When it is necessary to clamp the pipe fitting, the second cylinder 6 first drives the left clamp 8 and the right clamp 9 to open. When the pipe fitting enters the middle part of the left clamp 8 and the right clamp 9, the second cylinder 6 drives the left clamp 8 and the right clamp 9 to close to achieve clamping of the pipe fitting. In actual use, in order to avoid damage to the surface of the pipe fitting caused by the left clamp 8 and the right clamp 9 clamping the pipe fitting, an elastic buffer layer can be designed on the clamping inner wall of the left clamp 8 and the right clamp 9.

[0026] After the pipe is stretched, it is easy to deform. Generally, the pipe will not maintain a horizontal state, but will form a certain angle with the horizontal plane under the action of internal stress. At this time, the present invention is designed to connect the piston rod of the first cylinder 4 with the support frame 5. Since the clamping device is rotatably connected to the fixed seat 3, the rotatable connection is achieved by rotatably connecting the support frame 5 with the fixed seat 3. Specifically, a pin 7 is installed on the support frame 5, and the support frame 5 is rotatably connected to the fixed seat 3 through the pin 7. In this way, the extension and retraction of the piston rod of the first cylinder 4 can drive the support frame 5 to rotate relative to the fixed seat 3. In the present invention, the rotation center line of the support frame 5 and the clamping center line of the clamp assembly are perpendicular to each other. In this way, during the rotation of the support frame 5, the angle between the clamping center line of the clamp assembly and the horizontal plane can be adjusted to meet the needs of the pipe, so as to better clamp the pipe and avoid irreversible deformation of the pipe due to the angle with the pipe.

[0027] In order to facilitate the definition of the position of the support frame 5, the present invention provides a slide groove 13 located above the support frame 5 on the end surface of the fixing base 3 on the side where the support frame 5 is installed. Figure 4 As shown, a positioning block 14 is installed in the slide groove 13, and a plurality of spaced positioning bolts 15 are installed on the positioning block 14. The non-nut end of the positioning bolt 15 is pressed against the side surface of the support frame 5. The plurality of positioning bolts 15 can be extended to different lengths by adjustment. In this way, the rear end face of the support frame 5 can be rotated to tilt, which is convenient for fixing the support frame 5 and avoids shaking.

[0028] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A traction mechanism between pipe stretching machine units, characterized in that: The invention comprises a base, a cantilever is installed on the base, a driving component for driving the cantilever to rotate is provided on the base, a traction component is provided at the end of the cantilever, the traction component comprises a fixed seat, a first cylinder, and a clamping device, the fixed seat is fixed to the end of the cantilever, the first cylinder is fixed to one side of the fixed seat, the clamping device is rotatably connected with the fixed seat, the clamping device comprises a support frame, a second cylinder and a clamp assembly are installed on the support frame, the piston rod of the second cylinder is connected to the clamp assembly and drives the clamp assembly to open or close, the piston rod of the first cylinder is connected to the support frame, the extension and retraction of the piston rod of the first cylinder can drive the support frame to rotate relative to the fixed seat, and the rotation of the support frame The center line is perpendicular to the clamping center line of the clamp assembly; a slide groove located above the support frame is opened on the end face of one side of the fixed seat mounting support frame, a positioning block is installed in the slide groove, a plurality of spaced positioning bolts are installed on the positioning block, and the non-nut end of the positioning bolt is pressed against the side of the support frame; the driving component includes a driving cylinder, a rack, and a main gear, the main gear is fixedly connected to the rotating shaft of the cantilever, the rack is installed on the base and meshed with the main gear, the driving cylinder is fixed on the base and the telescopic end is connected to the rack; the base is provided with induction switches located at both ends of the rack, the induction switch detects the position of the rack and sends a control signal to control the telescopic action of the driving cylinder.

2. The traction mechanism between pipe stretching machine units according to claim 1, characterized in that: A pin is installed on the support frame, and the support frame is rotatably connected to the fixing seat through the pin.

3. The traction mechanism between pipe stretching machine units according to claim 1, characterized in that: The clamp assembly includes a left clamp, a right clamp, and a support plate. There are two support plates and they are fixed at intervals on the lower part of the support frame. The left clamp and the right clamp are installed between the two support plates and are arranged opposite to each other. The left clamp is provided with a rotating shaft and a left gear, and the right clamp is provided with a rotating shaft and a right gear. The rotating shaft is rotatably connected to the support plate, and the left gear and the right gear are meshed with each other.

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