Multi-directional expanding forming device and method for pipe port repairing material

Abstract

The device comprises a fixing mechanism, a diameter expanding mechanism and a turning tool module, the diameter expanding mechanism comprises a main shaft, a plurality of diameter expanding oil cylinders are evenly distributed at the front end of the main shaft, diameter expanding movable blocks are arranged on the diameter expanding oil cylinders, the turning tool module is arranged behind the diameter expanding oil cylinders, the main shaft is arranged on a bearing seat, and the bearing seat is arranged on the bearing seat. The bearing seat is arranged on a supporting plate, and the supporting plate is connected with the base through a main shaft guide rail and a lead screw. A pipe is fixed through a fixing mechanism, a supplementary material is placed outside or inside a port of the pipe, a lead screw pushes a spindle to feed, a diameter expanding oil cylinder pushes out a diameter expanding movable block to expand the diameter of the pipe, after pushing out, the spindle retracts, rotates and then is pushed out again to achieve multidirectional diameter expanding of the supplementary material, and after diameter expanding is completed, a turning tool module is started, and the spindle rotates. And a sealing ring groove and an internal thread are lathed in the pipe. According to the method, the problem that the shape parameter of the pipe expanded by an existing expanding method is poor is solved, and rapid machining of a sealing ring groove and a threaded groove needed for pipe port connection is achieved.

Description

Technical Field

[0001] The invention relates to the field of material forming, and in particular to a device and method for forming a pipe port filling material with multi-directional diameter expansion. Background Art

[0002] Steel pipes are widely used in life and production. They are an economical steel material and play an important role in the pipeline transportation of oil and gas resources. They can be used to transport fluids and powdered solids, exchange heat energy, manufacture mechanical parts and containers, etc. Steel pipes are used to manufacture building structure grids, pillars and mechanical supports, which can reduce weight and save 20-40% of metal. Moreover, factory-based mechanized construction can be realized. However, welding, flange connection and bolt connection between traditional steel pipes have problems such as low safety and low material utilization rate. In addition, most of the existing expansion technologies adopt methods such as oblique rolling expansion, drawing expansion, jacking expansion and mechanical expansion. There are problems such as uneven wall thickness of pipes, low wall thickness accuracy, easy exposure and expansion of surface defects of expanded pipe products, large units and serious energy waste. In addition, it is difficult for the existing expansion methods to realize the rapid processing of sealing ring grooves and thread grooves required for pipe port connection.

[0003] Therefore, the existing material forming field needs to be further improved. Summary of the invention

[0004] The present invention provides a device and method for forming a multi-directional diameter expansion of a pipe port, the purpose of which is to realize the diameter expansion of the pipe port and to machine internal threads and sealing grooves, so as to alleviate the technical problems of uneven wall thickness of the pipe after diameter expansion, low wall thickness accuracy, and easy exposure and expansion of surface defects of the expanded pipe product in the existing diameter expansion method, control the volume of the unit, improve energy utilization, and realize rapid processing of the sealing ring groove and the thread groove required for the connection of the pipe port.

[0005] In order to achieve the above object, the present invention adopts the following scheme:

[0006] In a first aspect, the present invention provides a multi-directional diameter expansion and forming device for a pipe port filling material, comprising a fixing mechanism, an expansion mechanism and a turning tool module, wherein:

[0007] The fixing mechanism comprises a base, side plates are respectively arranged on both sides of the base, a clamping cylinder is arranged inwardly of the side plate, a clamping block is arranged at the driving end of the clamping cylinder, the driving shafts of the two clamping cylinders are coaxially arranged, and the two clamping blocks are used to clamp and fix the pipe to be expanded;

[0008] The expansion mechanism includes a main shaft, which is mounted on a bearing seat, and the bearing seat is arranged on a support plate, and the support plate is slidably connected to the base through a sliding assembly, and a horizontal electric drive mechanism is arranged between the support plate and the base for driving the support plate to move horizontally, and the axis of the main shaft is perpendicular to the axes of the driving shafts of the two clamping cylinders; a plurality of expansion cylinders are evenly distributed along the circumferential direction on the outer side of the front end of the main shaft, and an expansion block is arranged at the driving end of the expansion cylinder, and the turning tool module is arranged on the main shaft and at an adjacent position behind the expansion cylinder; the rear end of the main shaft is connected to the main shaft drive mechanism.

[0009] Furthermore, the two side plates are connected by a plurality of Corinthian columns, a clamping piston is provided in the clamping cylinder, the clamping movable block is provided on the clamping piston, and the clamping movable block is connected to the base via a movable block guide rail or through the Corinthian columns.

[0010] Further, the sliding assembly includes a spindle guide rail; the horizontal electric drive mechanism includes an electric screw rod;

[0011] The spindle guide rail and the electric screw are arranged on the base along the spindle axis direction, and the spindle guide rail is composed of two groups respectively installed on both sides above the base, the support plate is slidably installed on the spindle guide rail, and the nut seat threaded on the electric screw is fixedly connected to the support plate; the front end of the screw is installed on the base through the screw bearing seat, and the rear end is connected to the screw drive mechanism.

[0012] Furthermore, the clamping block is designed as a rectangular block with a semicircular stepped hole on one side; the circular hole formed by the two clamping blocks is coaxial with the main shaft.

[0013] Furthermore, the circular hole formed by the two clamping blocks is a stepped hole, and the stepped hole is a large-diameter hole close to one end of the main shaft.

[0014] Furthermore, the spindle driving mechanism includes a driven gear 2, a driving gear 1 and a spindle motor, the driven gear 2 is installed at the rear end of the spindle, the driving gear 1 is meshed with the driven gear 2, and the driving gear 1 is fixedly connected to the output end of the spindle motor.

[0015] Furthermore, an expanding piston is arranged in the expanding cylinder, and an expanding movable block is arranged on the expanding piston.

[0016] Furthermore, the tool module includes a tool cylinder, the tool cylinder is fixed on the spindle, a tool piston is arranged in the tool cylinder, and a tool is arranged on the tool piston.

[0017] Furthermore, the turning tool module includes a cushion block, the cushion block is fixed on the main shaft, a fixing block is arranged on the cushion block, and the turning tool is fixed on the fixing block.

[0018] In a second aspect, the present invention provides a method for forming a multi-directional diameter expansion of a pipe port filling material, which is applied to the multi-directional diameter expansion forming device for forming a pipe port filling material as described in the first aspect, and comprises the following steps:

[0019] 1) The clamping cylinder drives the clamping block to clamp the pipe to be expanded, and then waits for expansion;

[0020] 2) Select the filling method as inner lining filling or outer lining filling;

[0021] Among them, the inner lining patch is to place the patch pipe on the inner wall of the pipe to be expanded, and the outer lining patch is to place the patch pipe on the outer side of the pipe to be expanded.

[0022] 3) The expansion block is driven to extend through the expansion cylinder to expand and shape the pipe to be expanded;

[0023] 4) Retract the expansion block and use the turning tool module to turn the internal thread and sealing groove on the expanded pipe port.

[0024] In summary, the present invention has the following beneficial effects compared with the prior art:

[0025] The present invention solves the shortcomings of the existing steel pipe connection and installation methods. Through the structural setting of the present invention, it has the following advantages: the connection between pipes is optimized by expanding the diameter of the pipe port and machining the internal thread and the sealing groove. Compared with traditional welding, flange connection and bolt connection, it has the characteristics of safety, reliability and high material utilization rate, and realizes the rapid processing of the sealing ring groove and the thread groove required for the pipe port connection. For the pipe port filling material expansion, it greatly alleviates the problems of uneven pipe wall thickness, low wall thickness accuracy, easy exposure and expansion of surface defects of the expanded pipe product, so that the device ensures uniform deformation of the port part during the expansion process and consistent thickness of each part of the pipe port. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is the front view of the multi-directional expansion and forming device for pipe end filling;

[0027] Figure 2 It is a side view of a multi-directional diameter expansion forming device for pipe end filling;

[0028] Figure 3 It is a top view of the multi-directional expansion forming device for pipe port filling.

[0029] In the figure: 1. fixing mechanism; 101. base; 102. side plate; 103. clamping cylinder; 104. clamping movable block; 105. coring column; 106. movable block guide; 107. clamping piston; 2. expansion mechanism; 201. spindle; 202. expansion cylinder; 203. expansion movable block; 204. bearing seat; 205. support plate; 206. spindle guide; 207. electric screw; 208. screw drive mechanism; 209. driven gear 2; 210. expansion piston; 3. turning tool module; 301. turning tool cylinder; 302. turning tool piston; 303. turning tool. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figures 1 to 3 The present invention provides a multi-directional diameter expansion and forming device for a pipe port filling material, comprising a fixing mechanism 1, an expansion mechanism 2 and a turning tool module 3, wherein:

[0032] The fixing mechanism 1 comprises a base 101, and side plates 102 are respectively arranged on both sides of the base 101, and a clamping cylinder 103 is arranged inwardly of the side plate 102, and a clamping block 104 is arranged at the driving end of the clamping cylinder 103, and the driving shafts of the two clamping cylinders 103 are coaxially arranged, and the two clamping blocks 104 are used to clamp and fix the pipe to be expanded;

[0033] The expansion mechanism 2 includes a spindle 201, which is mounted on a bearing seat 204, which is arranged on a support plate 205, which is slidably connected to the base 101 through a sliding assembly, and a horizontal electric drive mechanism is arranged between the support plate 205 and the base 101, which is used to drive the support plate 205 to move horizontally, and the axis of the spindle 201 is perpendicular to the axis of the drive shafts of the two clamping cylinders 103; a plurality of expansion cylinders 202 are evenly distributed along the circumferential direction on the outer side of the front end of the spindle 201, and an expansion block 203 is arranged at the driving end of the expansion cylinder 202, and a turning tool module 3 is arranged on the spindle 201 and at a position adjacent to the rear of the expansion cylinder 202; the rear end of the spindle 201 is connected to the spindle drive mechanism. Optionally, in some embodiments, the expansion cylinder 202 is arranged in four.

[0034] Furthermore, the two side plates 102 are connected by a plurality of Corinthian columns 105, and optionally, are connected by four Corinthian columns 105. A clamping piston 107 is provided in the clamping cylinder 103, and a clamping movable block 104 is provided on the clamping piston 107. The clamping movable block 104 is connected to the base 101 via a movable block guide rail 106 or through the Corinthian columns 105.

[0035] Further, the sliding assembly includes a spindle guide rail 206; the horizontal electric drive mechanism includes an electric screw rod 207;

[0036] The spindle guide rail 206 and the electric screw 207 are arranged on the base 101 along the axial direction of the spindle 201, and the spindle guide rail 206 is divided into two groups and installed on both sides above the base 101 respectively. The support plate 205 is slidably installed on the spindle guide rail 206, and the nut seat threaded on the electric screw 207 is fixedly connected to the support plate 205; the front end of the screw 207 is installed on the base 101 through the screw bearing seat, and the rear end is connected to the screw drive mechanism 208.

[0037] Furthermore, the clamping block 104 is designed as a rectangular block with a semicircular stepped hole on one side; the circular hole formed by the two clamping blocks 104 is coaxial with the main shaft 201.

[0038] Furthermore, the circular hole formed by the two clamping blocks 104 is a stepped hole, and the end of the stepped hole close to the main shaft 201 is a large-diameter hole.

[0039] Furthermore, the spindle driving mechanism includes a driven gear 209, a driving gear 1 and a spindle motor. The driven gear 209 is installed at the rear end of the spindle 201, the driving gear 1 is meshed with the driven gear 209, and the driving gear 1 is fixedly connected to the output end of the spindle motor.

[0040] Furthermore, an expanding piston 210 is disposed in the expanding cylinder 202 , and an expanding movable block 203 is disposed on the expanding piston 210 .

[0041] Furthermore, one type of turning tool module 3 includes a turning tool cylinder 301 , which is fixed on the spindle 201 , a turning tool piston 302 is arranged in the turning tool cylinder 301 , and a turning tool 303 is arranged on the turning tool piston 302 .

[0042] Furthermore, another type of turning tool module 3 may be selected, wherein the turning tool module 3 includes a cushion block, the cushion block is fixed on the spindle 201, a fixing block is arranged on the cushion block, and a turning tool 303 is fixed on the fixing block.

[0043] The working principle of the above pipe port filling multi-directional diameter expansion forming device is as follows:

[0044] The oil inflow of the rodless chamber of the clamping cylinder 103 drives the clamping piston 107 to push the clamping block 104 inward, so that the two clamping blocks 104 clamp and fix the pipe. After the pipe is clamped and fixed, the oil inflow of the rodless chamber of the clamping cylinder 103 stops. When the lining material filling method is adopted, the lining pipe is put on the cylinder of the main shaft 201, and the motor drives the screw rod 207 to realize the feeding of the main shaft 201. When the working length of the pipe port expansion is reached, the electric screw The motor of rod 207 stops feeding, and the rodless cavity of the expansion cylinder 202 is filled with oil to push the expansion piston 210 and the expansion block 203 radially outward along the main shaft 201, until the inner lining is fully propped up and close to the inner wall of the pipe, and the inner lining filling is completed; when the outer lining filling method is adopted, the outer lining pipe is sleeved on the outer side of the port of the pipe to be expanded to complete the outer lining filling; after the filling is completed, the rodless cavity of the expansion cylinder 202 continues to fill with oil, and advances outward in small increments of 5 mm. The motor drives the spindle 201 to rotate 45°, and then pushes out 5mm in the other direction. After the push out, it retracts. The motor drives the spindle 201 to rotate 45° to continue expanding the diameter, and repeats this process until the required expansion size of the pipe is reached and the expansion is completed; the expansion block 203 is fixed, and the motor continues to drive the spindle 201 to rotate to shape the inner wall of the pipe; after the shaping is completed, oil enters the rod cavity of the expansion cylinder 202, the expansion piston 210 and the expansion block 203 are retracted together, and the screw rod 207 is driven to feed the spindle 201 forward. When the milling cutter contacts the inner wall of the transition area between the original size of the pipe and the expanded size of the pipe, the motor drives the spindle 201 to rotate and drive the spindle 201 to feed slowly, and a sealing groove is milled out of the wall of the transition area. After the sealing groove is milled out, the spindle 201 begins to withdraw outward, and during the withdrawal process, the turning tool piston 302 is extended to realize threading.

[0045] On the other hand, the present invention further provides a method for forming a multi-directional diameter expansion of a pipe port filling material, which is applied to the multi-directional diameter expansion of a pipe port filling material forming device of the aforementioned embodiment, and the method comprises the following steps:

[0046] 1) The clamping cylinder 103 drives the clamping block 104 to clamp the pipe to be expanded, and then waits for expansion;

[0047] 2) Select the filling method as inner lining filling or outer lining filling;

[0048] Among them, the inner lining patch is to place the patch pipe on the inner wall of the pipe to be expanded, and the outer lining patch is to place the patch pipe on the outer side of the pipe to be expanded.

[0049] 3) The diameter expansion block 203 is driven to extend through the diameter expansion cylinder 202 to expand and shape the pipe to be expanded;

[0050] 4) Retract the expansion block 203 and use the turning tool module 3 to turn the internal thread and sealing groove on the expanded pipe port.

[0051] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multi-directional diameter expansion forming device for pipe end filling material, characterized in that: It comprises a fixing mechanism (1), a diameter expansion mechanism (2) and a turning tool module (3), wherein: The fixing mechanism (1) comprises a base (101), side plates (102) are respectively arranged on both sides of the base (101), a clamping cylinder (103) is arranged inwardly of the side plate (102), a clamping block (104) is arranged at the driving end of the clamping cylinder (103), the driving shafts of the two clamping cylinders (103) are coaxially arranged, and the two clamping blocks (104) are used to clamp and fix the pipe to be expanded; The diameter expansion mechanism (2) comprises a main shaft (201), the main shaft (201) is mounted on a bearing seat (204), the bearing seat (204) is arranged on a support plate (205), the support plate (205) is slidably connected to the base (101) via a sliding assembly, and a horizontal electric drive mechanism is arranged between the support plate (205) and the base (101) for driving the support plate (205) to move horizontally, the main shaft (2 01) is perpendicular to the axes of the drive shafts of the two clamping cylinders (103); a plurality of expansion cylinders (202) are evenly distributed along the circumferential direction on the outer side of the front end of the main shaft (201); an expansion block (203) is provided at the driving end of the expansion cylinder (202); the turning tool module (3) is provided on the main shaft (201) and at a position adjacent to the rear of the expansion cylinder (202); the rear end of the main shaft (201) is connected to the main shaft driving mechanism.

2. The multi-directional diameter expansion forming device for pipe end filling material according to claim 1, characterized in that: The two side plates (102) are connected via a plurality of Corinthian columns (105), a clamping piston (107) is arranged in the clamping oil cylinder (103), a clamping movable block (104) is arranged on the clamping piston (107), and the clamping movable block (104) is connected to the base (101) via a movable block guide rail (106) or through the Corinthian columns (105).

3. The multi-directional diameter expansion forming device for pipe end filling material according to claim 1, characterized in that: The sliding assembly comprises a spindle guide rail (206); the horizontal electric drive mechanism comprises an electric screw rod (207); The spindle guide rail (206) and the electric screw rod (207) are arranged on the base (101) along the axis direction of the spindle (201), and the spindle guide rail (206) is composed of two groups respectively installed on both sides above the base (101); the support plate (205) is slidably installed on the spindle guide rail (206); the nut seat threadedly connected on the electric screw rod (207) is fixedly connected to the support plate (205); the front end of the screw rod (207) is installed on the base (101) through a screw rod bearing seat, and the rear end is connected to the screw rod driving mechanism.

4. The multi-directional diameter expansion forming device for pipe end filling material according to claim 1, characterized in that: The clamping block (104) is designed as a rectangular block with a semicircular stepped hole on one side; the circular hole formed by the two clamping blocks (104) is coaxial with the main shaft (201).

5. The multi-directional diameter expansion forming device for pipe end filling material according to claim 4, characterized in that: The circular hole formed by the two clamping blocks (104) is a stepped hole, and the end of the stepped hole close to the main shaft (201) is a large-diameter hole.

6. The multi-directional diameter expansion forming device for pipe end filling material according to claim 1, characterized in that: The spindle drive mechanism comprises a driven gear 2 (209), a driving gear 1 and a spindle motor, wherein the driven gear 2 (209) is mounted on the rear end of the spindle (201), the driving gear 1 is meshed with the driven gear 2 (209), and the driving gear 1 is fixedly connected to the output end of the spindle motor.

7. The multi-directional diameter expansion forming device for pipe end filling material according to claim 1, characterized in that: An expanding piston (210) is arranged in the expanding oil cylinder (202), and an expanding movable block (203) is arranged on the expanding piston (210).

8. The multi-directional diameter expansion forming device for pipe end filling material according to claim 1, characterized in that: The turning tool module (3) comprises a turning tool cylinder (301), wherein the turning tool cylinder (301) is fixed on the main shaft (201), a turning tool piston (302) is arranged in the turning tool cylinder (301), and a turning tool (303) is arranged on the turning tool piston (302).

9. The multi-directional diameter expansion forming device for pipe end filling material according to claim 1, characterized in that: The turning tool module (3) comprises a cushion block, the cushion block is fixed on the main shaft (201), a fixing block is arranged on the cushion block, and a turning tool (303) is fixed on the fixing block.

10. A method for multi-directional expansion of a pipe end filling material, applied to the multi-directional expansion of a pipe end filling material device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: 1) The clamping oil cylinder (103) drives the clamping movable block (104) to clamp the pipe to be expanded, and then wait for the expansion; 2) Select the filling method as inner lining filling or outer lining filling; Among them, the inner lining filler is to place the filler pipe on the inner wall of the pipe to be expanded, and the outer lining filler is to place the filler pipe on the outer side of the pipe to be expanded; 3) driving the diameter expansion movable block (203) to extend through the diameter expansion oil cylinder (202) to expand and shape the pipe to be expanded; 4) retracting the diameter expansion block (203), and using the turning tool module (3) to turn the internal thread and the sealing groove on the expanded pipe port.

Images