A seamless steel pipe production device

Abstract

The invention relates to the technical field of seamless steel pipe production, and specifically discloses a seamless steel pipe production device, including a workbench, a planetary gear mechanism and a power part arranged on the workbench, wherein the sun gear in the planetary gear mechanism is coaxially connected with a screw rod, the screw rod is threadedly connected with a threaded sleeve, the threaded sleeve is fixed with a slider, a support frame for placing the steel pipe and a clamping assembly for clamping the steel pipe are provided on the slider, the planetary gears in the planetary gear mechanism are coaxially connected with a punching rod for punching holes in the steel pipe; the clamping assembly includes symmetrically arranged clamping arms, the clamping arms are fixedly connected with a rotating shaft rotatably connected to the slider, adjacent rotating shafts are coaxially connected with mutually meshing gears, the gears are meshed with racks, the racks are vertically slidably connected with the slider, a guide track with height changeable positions is provided on the workbench, the bottom end of the rack is slidably connected with the guide track, clamping and punching can be performed during the movement of the steel pipe, the control is convenient and quick, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of seamless steel pipe production, and specifically discloses a seamless steel pipe production device. Background Art

[0002] The production process of seamless steel pipe is as follows: the round tube billet is heated and pierced, then headed, pickled, cold drawn into a billet tube, heat treated, straightened, and finally packaged and put into storage. After multiple processes, the seamless steel pipe production and processing related technologies are completed. When seamless steel pipe is produced, the steel tube billet is conveyed to a heating furnace for heating. After the steel tube billet is heated, it is conveyed to a piercing machine. The punching rod on the piercing machine moves in the direction close to the steel tube billet and punches holes to complete the piercing process. Then the operator places the pierced steel pipe into a collection box, and then transfers the pierced steel pipe to the shrinking machine, and then feeds the steel pipe to the shrinking machine for heading and shrinking. Then the steel pipe is unloaded to the collection box for pickling, cold drawing, heat treatment, straightening, packaging and other processes to complete the manufacturing of seamless steel pipe.

[0003] The Chinese invention patent with patent publication number CN113263071A discloses an efficient and convenient seamless steel pipe production line, which includes a heating furnace, a conveying device, a perforating mechanism, a feeding mechanism and a shrinking machine. The conveying device is connected to the feeding end of the heating furnace, and the conveying device for conveying the steel pipe to both sides of the conveying device is placed horizontally. There are two perforating mechanisms, which are respectively located at the two feeding ends of the conveying device. The feeding mechanism for conveying the steel pipe on the perforating mechanism to the shrinking machine is connected between the perforating mechanism and the shrinking machine. The two perforating mechanisms perforate the steel pipe, and the feeding mechanism automatically conveys the steel pipe to the shrinking machine.

[0004] In this invention, the steel pipe needs to be pushed by a pushing cylinder, and a motor is needed to drive the punching rod to rotate, and a telescopic cylinder is needed to fix the steel pipe. That is, multiple power elements are needed to complete the fixing and punching of the steel pipe. The control process is complicated, and the linkage between equipment and status detection in the production process are required to be high, which increases the control cost and maintenance cost. Therefore, in view of this, the inventor provides a seamless steel pipe production device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that a traditional seamless steel pipe production device requires multiple power elements to complete the fixing and punching of the steel pipe during the punching process, which increases the control cost and maintenance cost.

[0006] In order to achieve the above-mentioned purpose, the basic scheme of the present invention provides a seamless steel pipe production device, including a workbench, a planetary gear mechanism arranged on the workbench and a power part for driving the planetary gear mechanism, the sun gear in the planetary gear mechanism is coaxially connected with a screw rod, the screw rod is threadedly connected with a threaded sleeve, the threaded sleeve is fixed with a slider, the slider is provided with a support frame for placing the steel pipe and a clamping assembly for clamping the steel pipe, the planetary gears in the planetary gear mechanism are coaxially connected with a punching rod for punching holes in the steel pipe;

[0007] The clamping assembly includes symmetrically arranged clamping arms, each of which is fixedly connected to a rotating shaft rotatably connected to the slider, adjacent rotating shafts are coaxially connected to mutually meshing gears, a rack is meshed on the side of the gears away from each other, the rack is vertically slidably connected to the slider, a guide track with height changeable position is provided on the workbench, and the bottom end of the rack is slidably connected to the guide track.

[0008] The principles and effects of this basic solution are:

[0009] 1. In the present invention, a planetary gear mechanism is provided and driven to move by a power member, so that the sun gear and the planetary gear in the planetary gear mechanism can both rotate, the sun gear drives the screw to move, and the cooperation between the screw and the threaded sleeve drives the slider to slide, thereby driving the steel pipe to move, and then relative movement occurs between the steel pipe and the punching rod; at the same time, the planetary gear drives the punching rod to rotate, so that the punching rod rotates to punch holes in the steel pipe.

[0010] 2. In the present invention, by setting guide tracks, racks and gears, etc., when the slider slides, the bottom of the rack slides in the guide track to be raised and lowered, and the meshing between the rack and the gear is utilized to make the two gears rotate relative to or opposite to each other, and the two clamping arms are driven to rotate relative to or opposite to each other through the rotating shaft, so that the clamping arms can clamp or release the steel pipe.

[0011] 3. Compared with the prior art, the present invention can achieve the purpose of clamping and moving the steel pipe and driving the punching rod to rotate to punch holes in the steel pipe only by controlling the start of the power part. The overall structure is compact, the control is simple and easy, and the production cost in the production process of seamless steel pipes is reduced.

[0012] Furthermore, the slide block is provided with a through slot, and the two ends of the rotating shaft are rotatably connected to the inner side walls of the through slot, and a limit block slidably connected to the rack is provided in the through slot. The through slot provides space for the rotation of the clamp arm, and the limit block plays a role of limiting and guiding the sliding of the rack.

[0013] Furthermore, the guide track includes a horizontal section and an inclined section. When the steel pipe is punched, the bottom end of the rack is slidably connected in the horizontal section, and when the steel pipe is transported, the bottom end of the rack is slidably connected in the inclined section. When the bottom end of the rack is slidably connected in the horizontal section, the position of the rack does not change, and the clamp arm is in a state of clamping the steel pipe, which is suitable for punching the steel pipe. When the bottom end of the rack is slidably connected in the inclined section, the position of the rack rises and falls with the guide track, driving the clamp arm to clamp or loosen the steel pipe, which is suitable for punching the steel pipe.

[0014] Furthermore, when the rack moves from the inclined section to the side close to the horizontal section, it drives the rack to rise vertically, and the rack meshes with the gear to make the two gears rotate toward each other. When the rack moves from the inclined section to the end away from the horizontal section, it drives the rack to fall vertically, and the rack meshes with the gear to make the two gears rotate away from each other. When the rack meshes with the gear to make the two gears rotate toward each other, the clamp arm is driven to clamp the steel pipe, thereby facilitating punching. When the rack meshes with the gear to make the two gears rotate away from each other, the clamp arm is driven to release the steel pipe, thereby facilitating the removal of the steel pipe.

[0015] Furthermore, the side walls of the guide rail are symmetrically provided with limit grooves, and the bottom of the rack is provided with a connecting shaft slidably connected to the limit grooves. The limit grooves and the rack cooperate with each other to reduce the contact area between the rack and the guide rail, thereby reducing the friction.

[0016] Furthermore, both ends of the connecting shaft are provided with clamping blocks through the limiting grooves, and the clamping blocks can limit the sliding of the connecting shaft and prevent the position of the connecting shaft from being offset.

[0017] Furthermore, a fixing frame for mounting the planetary gear mechanism is provided on the workbench, and the ring gear, the planetary gear and the sun gear in the planetary gear mechanism are all rotatably connected to the fixing frame. The fixing frame facilitates the installation of the planetary gear mechanism.

[0018] Furthermore, the fixing frame is provided with fixing sleeves which are detachably connected to each other and are located on both sides of the gear ring in the planetary gear mechanism, and the gear ring is rotatably connected between the two fixing sleeves. The position of the gear ring is limited by the two fixing sleeves, which plays a role in limiting the rotation of the gear ring.

[0019] Furthermore, the fixing sleeve is provided with a notch, the outer wall of the gear ring is provided with an external gear, the output end of the power member is coaxially connected with a driving gear, and the driving gear and the external gear are meshed at the notch of the fixing sleeve. The notch provides a meshing environment for the driving gear and the external gear to avoid interference, so that the power member can drive the gear ring to rotate, thereby driving the sun gear and the planetary gear to rotate.

[0020] Based on the same inventive concept, the present invention provides a method for producing a seamless steel pipe, comprising using the above-mentioned seamless steel pipe production device to produce a seamless steel pipe according to the following steps:

[0021] Step S001, heat the round tube blank and place it on a support frame, and start the power part in a positive direction;

[0022] Step S002, the power member drives the screw to rotate through the sun gear in the planetary gear mechanism, and the screw drives the slider to move, so that the bottom of the rack slides in the guide track and rises, driving the clamping arms to move closer to each other to clamp the round tube billet;

[0023] Step S003, after the round tube blank is clamped, the screw continues to drive the slider to move, gradually approaching the punching rod, and at the same time, the power member drives the punching rod to rotate through the planetary gear in the planetary gear mechanism to punch holes in the round tube blank;

[0024] Step S004, after the punching is completed, the power member is started in the reverse direction to separate the punching rod from the steel pipe, and then the bottom of the rack slides in the guide track and descends, driving the clamping arms to move away from each other and release the steel pipe;

[0025] Step S005, the punched steel pipe is sequentially headed, necked, pickled, cold drawn, heat treated, straightened, and packaged until the seamless steel pipe is manufactured.

[0026] By adopting this method to produce seamless steel pipes, during the punching process of seamless steel pipe production, the purpose of clamping, moving and driving the punching rod to rotate the steel pipe to punch holes in the steel pipe can be achieved by only one power component, which simplifies the complexity of the control system and reduces the production cost in the seamless steel pipe production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A side isometric view of a seamless steel pipe production device proposed in an embodiment of the present application is shown;

[0029] Figure 2 A seamless steel pipe production device proposed in an embodiment of the present application is shown. Figure 1 Enlarged view of part A in the middle;

[0030] Figure 3 Another side axial view of a seamless steel pipe production device proposed in an embodiment of the present application is shown;

[0031] Figure 4 A front view of a seamless steel pipe production device proposed in an embodiment of the present application is shown;

[0032] Figure 5 A schematic diagram showing the connection between the guide rail and rack of a seamless steel pipe production device proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0033] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0034] The figure marks in the drawings of the specification include: workbench 1, fixed sleeve 2, sun gear 3, planetary gear 4, ring gear 5, driving gear 6, screw 7, punching rod 8, round tube blank 9, threaded sleeve 10, slider 11, clamping arm 12, guide rail 13, guide rod 14, gear 15, rack 16, limit block 17, support frame 18, power part 19, connecting shaft 20, and clamping block 21.

[0035] A seamless steel pipe production device, for example Figure 1 As shown: it includes a workbench 1, a planetary gear 15 mechanism arranged on the workbench 1 and a power member 19 for driving the planetary gear 15 mechanism. The power member 19 adopts a stepping motor, which is as follows:

[0036] like Figure 1 and Figure 3 As shown, the sun gear 3 in the planetary gear 15 mechanism is coaxially connected with a screw rod 7, the screw rod 7 is threadedly connected with a threaded sleeve 10, the threaded sleeve 10 is fixed with a slider 11, guide rods 14 are arranged on the front and rear sides of the workbench 1, and guide rod 14 sleeves slidably connected to the guide rod 14 are respectively arranged at both ends of the slider 11, and support frames 18 for placing steel pipes and clamping components that can clamp the steel pipes are symmetrically arranged on the front and rear sides of the slider 11, and the support frames 18 are arranged in pairs and respectively accommodate the two ends of the steel pipe.

[0037] like Figure 1 and Figure 3 As shown, there are two planetary gears 4 in the planetary gear 15 mechanism and they are respectively located on the front and rear sides of the sun gear 3. The planetary gears 4 are coaxially connected to the punching rod 8 for punching holes in the steel pipe through a coupling. The planetary gears 4 in the planetary gear 15 mechanism can rotate synchronously, so that the two punching rods 8 can rotate synchronously, and the punching of two steel pipes can be completed at the same time, thereby improving the punching efficiency.

[0038] like Figure 3As shown, a fixing frame for mounting a planetary gear 15 mechanism is provided on the workbench 1, and the ring gear 5, the planetary gear 4 and the sun gear 3 in the planetary gear 15 mechanism are all rotatably connected to the fixing frame. Specifically, two fixing sleeves 2 that are detachably connected to each other by bolts are provided on the fixing frame, and the two fixing sleeves 2 are located on both sides of the ring gear 5 in the planetary gear 15 mechanism. The sun gear 3 and the planetary gear 4 are connected to the fixing sleeves 2 through a connecting frame, and the ring gear 5 is rotatably connected between the two fixing sleeves 2. A notch is provided on the fixing sleeve 2, and an external gear 15 is provided on the outer wall of the ring gear 5. The output end of the power member 19 is coaxially connected with a driving gear 6, and the driving gear 6 and the external gear 15 are meshed at the notch of the fixing sleeve 2.

[0039] like Figure 2 As shown, the clamping assembly includes symmetrically arranged clamping arms 12, each of which is fixedly connected to a rotating shaft rotatably connected to the slider 11. Specifically, a through slot is opened on the slider 11, and the two ends of the rotating shaft are respectively rotatably connected to the inner side walls of the through slot, and the two sides of the adjacent rotating shafts are coaxially connected to mutually meshing gears 15, wherein two mutually meshing gears 15 are meshed with racks 16 on opposite sides, and the tops and bottoms of the racks 16 are fixed to each other to improve the structural strength, and the two racks 16 are vertically slidably connected to the slider 11, and a limit block 17 slidably connected to the racks 16 is provided in the through slot, as shown in FIG. Figure 5 As shown, when the rack 16 rises, the gear 15 on the left rotates clockwise and the gear 15 on the right rotates counterclockwise, so that the two clamping arms 12 approach each other. Conversely, when the rack 16 descends, the two clamping arms 12 move away from each other. A guide track 13 with a changeable height is provided on the workbench 1. The bottom end of the rack 16 is slidably connected to the guide track 13. Limiting grooves are symmetrically provided on the side walls of the guide track 13. A connecting shaft 20 slidably connected to the limiting groove is provided at the bottom of the rack 16. The limiting groove cooperates with the rack 16 to reduce the contact area between the rack 16 and the guide track 13, thereby reducing the friction. Blocks 21 are provided at both ends of the connecting shaft 20 through the limiting groove. The block 21 can limit the sliding of the connecting shaft 20 to prevent the position of the connecting shaft 20 from shifting.

[0040] like Figure 4 and Figure 5As shown, the guide track 13 includes a horizontal section close to the punching rod 8 and an inclined section away from the punching rod 8. When the steel pipe is punched, the bottom end of the rack 16 is slidably connected in the horizontal section, the position of the rack 16 does not change, and the clamping arm 12 is in a state of clamping the steel pipe, which is suitable for punching the steel pipe; when the steel pipe is transported, the bottom end of the rack 16 is slidably connected in the inclined section, and when the rack 16 moves from the inclined section to the side close to the horizontal section (moving from right to left), the rack 16 is driven to rise vertically, and the rack 16 is meshed with the gear 15 so that the two gears 15 rotate toward each other, driving the clamping arm 12 to gradually clamp the steel pipe, thereby facilitating subsequent punching; when the rack 16 moves from the inclined section to the end away from the horizontal section (moving from left to right), the rack 16 is driven to descend vertically, and the rack 16 is meshed with the gear 15 so that the two gears 15 rotate away from each other, driving the clamping arm 12 to gradually release the steel pipe, thereby facilitating the subsequent removal of the steel pipe.

[0041] During the implementation of the present invention, after the round tube blank 9 is heated and placed on the support frame 18, the power member 19 is started in the positive direction. The power member 19 drives the ring gear 5 to rotate through the driving gear 6 and the outer gear 15, and then drives the sun gear 3 and the planetary gear 4 to rotate, that is, drives the screw 7 and the punching rod 8 to rotate. During this process, the screw 7 drives the slider 11 to move to the left, and the rack 16 moves synchronously with the slider 11. When it moves from the bottom of the inclined section of the guide track 13 to the top of the inclined section, the bottom of the rack 16 slides and rises in the guide track 13, driving the clamping arms 12 to gradually approach each other to clamp the round tube blank 9. When the bottom of the rack 16 reaches the top of the inclined section of the guide track 13, the clamping arms 12 completely clamp the round tube blank 9 Clamping, at this time, the round tube blank 9 is not in contact with the punching rod 8, and the slider 11 continues to move to the left under the drive of the screw 7, and the rack 16 slides in the horizontal section of the guide track 13, and the vertical position of the rack 16 does not change, that is, the clamping arm 12 continues to keep the round tube blank 9 clamped, and the round tube blank 9 gradually approaches the punching rod 8. Since the punching rod 8 is driven by the planetary gear 15 to rotate, the round tube blank 9 can be punched. After the punching is completed, the power part 19 is started in the reverse direction, and the screw 7 can drive the slider 11 to move right, so that the rack 16 moves right and gradually moves to the lowest point of the guide track 13. At this time, the clamping arm 12 completely releases the steel pipe, and the punched steel pipe can be removed for the next step of the process.

[0042] Based on the same inventive concept, this embodiment provides a method for producing a seamless steel pipe, comprising using the above-mentioned seamless steel pipe production device to produce a seamless steel pipe according to the following steps:

[0043] Step S001, heat the round tube blank 9 and place it on the support frame 18, and start the power member 19 in the positive direction;

[0044] Step S002, the power member 19 drives the screw 7 to rotate through the sun gear 3 in the planetary gear 15 mechanism, and the screw 7 drives the slider 11 to move, so that the bottom of the rack 16 slides in the guide track 13 and rises, driving the clamping arms 12 to move closer to each other to clamp the round tube 9;

[0045] Step S003, after the round tube blank 9 is clamped, the screw 7 continues to drive the slider 11 to move, gradually approaching the punching rod 8, and at the same time, the power member 19 drives the punching rod 8 to rotate through the planetary gear 4 in the planetary gear 15 mechanism to punch the round tube blank 9;

[0046] Step S004, after the punching is completed, the power member 19 is started in the reverse direction to separate the punching rod 8 from the steel pipe, and then the bottom of the rack 16 slides in the guide track 13 and descends, driving the clamping arms 12 to move away from each other and release the steel pipe;

[0047] Step S005, the punched steel pipe is sequentially headed, necked, pickled, cold drawn, heat treated, straightened, and packaged until the seamless steel pipe is manufactured.

[0048] By adopting this method to produce seamless steel pipes, during the punching process of seamless steel pipe production, the purpose of clamping, moving and rotating the punching rod 8 to punch the steel pipe can be achieved by only one power part 19, which simplifies the complexity of the control system and reduces the production cost in the process of seamless steel pipe production.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A seamless steel pipe production device, characterized in that: It includes a workbench, a planetary gear mechanism arranged on the workbench, and a power part for driving the planetary gear mechanism, wherein the sun gear in the planetary gear mechanism is coaxially connected with a screw rod, the screw rod is threadedly connected with a threaded sleeve, a slider is fixed with the threaded sleeve, a support frame for placing a steel pipe and a clamping assembly for clamping the steel pipe are arranged on the slider, and the planetary gears in the planetary gear mechanism are coaxially connected with a punching rod for punching holes in the steel pipe; The clamping assembly includes symmetrically arranged clamping arms, each of which is fixedly connected to a rotating shaft rotatably connected to the slider, adjacent rotating shafts are coaxially connected to mutually meshing gears, a rack is meshed on the side of the gears away from each other, the rack is vertically slidably connected to the slider, a guide track with height changeable position is provided on the workbench, and the bottom end of the rack is slidably connected to the guide track.

2. A seamless steel pipe production device according to claim 1, characterized in that: The slide block is provided with a through slot, and the two ends of the rotating shaft are rotatably connected to the inner side walls of the through slot respectively. A limiting block slidably connected to the rack is arranged in the through slot.

3. The seamless steel pipe production device according to claim 1, characterized in that: The guide track includes a horizontal section and an inclined section. When the steel pipe is punched, the bottom end of the rack is slidably connected in the horizontal section. When the steel pipe is transported, the bottom end of the rack is slidably connected in the inclined section.

4. A seamless steel pipe production device according to claim 3, characterized in that: When the rack moves from the inclined section to the side close to the horizontal section, it drives the rack to rise vertically, and the rack meshes with the gear to make the two gears rotate towards each other. When the rack moves from the inclined section to the end away from the horizontal section, it drives the rack to fall vertically, and the rack meshes with the gear to make the two gears rotate away from each other.

5. A seamless steel pipe production device according to any one of claims 1 to 4, characterized in that: The side walls on both sides of the guide track are symmetrically provided with limiting grooves, and the bottom of the rack is provided with a connecting shaft that is slidably connected to the limiting grooves.

6. A seamless steel pipe production device according to claim 5, characterized in that: Both ends of the connecting shaft pass through the limiting grooves and are provided with clamping blocks.

7. The seamless steel pipe production device according to claim 1, characterized in that: The workbench is provided with a fixing frame for mounting a planetary gear mechanism, and the ring gear, planetary gears and sun gear in the planetary gear mechanism are all rotatably connected to the fixing frame.

8. A seamless steel pipe production device according to claim 7, characterized in that: The fixing frame is provided with fixing sleeves which are detachably connected to each other and are located on both sides of the gear ring in the planetary gear mechanism, and the gear ring is rotatably connected between the two fixing sleeves.

9. A seamless steel pipe production device according to claim 8, characterized in that: The fixing sleeve is provided with a notch, the outer wall of the gear ring is provided with an external gear, the output end of the power member is coaxially connected with a driving gear, and the driving gear and the external gear are meshed at the notch of the fixing sleeve.

10. A method for producing a seamless steel pipe, characterized in that: The method comprises using the seamless steel pipe production device according to any one of claims 1 to 9 to produce seamless steel pipes according to the following steps: Step S001, heat the round tube blank and place it on a support frame, and start the power part in a positive direction; Step S002, the power member drives the screw to rotate through the sun gear in the planetary gear mechanism, and the screw drives the slider to move, so that the bottom of the rack slides in the guide track and rises, driving the clamping arms to move closer to each other to clamp the round tube billet; Step S003, after the round tube blank is clamped, the screw continues to drive the slider to move, gradually approaching the punching rod, and at the same time, the power member drives the punching rod to rotate through the planetary gear in the planetary gear mechanism to punch holes in the round tube blank; Step S004, after the punching is completed, the power member is started in the reverse direction to separate the punching rod from the steel pipe, and then the bottom of the rack slides in the guide track and descends, driving the clamping arms to move away from each other and release the steel pipe; Step S005, the punched steel pipe is sequentially headed, necked, pickled, cold drawn, heat treated, straightened, and packaged until the seamless steel pipe is manufactured.

Images