Riveting and press-fitting device for oil pipe joint

Abstract

The invention provides an expansion riveting and press-fit device for an oil pipe joint. Comprising an operation table, an installation frame, a first adjustable pull rod oil cylinder, a second adjustable pull rod oil cylinder, a third adjustable pull rod oil cylinder, a first air cylinder, a second air cylinder, a third air cylinder, a fourth air cylinder, a fifth air cylinder, a sixth air cylinder, a seventh air cylinder, an eighth air cylinder, a first pushing handle, a second pushing handle, two first sliding rails, two second sliding rails and two third sliding rails. And two fourth slide rails and a middle load spring. According to the oil pipe joint expanding and riveting and press-fitting device, the expanding and riveting pressure can be adjusted according to oil pipe joints of different specifications through the first adjustable pull rod oil cylinder, the second adjustable pull rod oil cylinder and the third adjustable pull rod oil cylinder, and the expanding and riveting precision is guaranteed; the first air cylinder, the second air cylinder, the third air cylinder, the fourth air cylinder, the fifth air cylinder, the sixth air cylinder, the seventh air cylinder, the eighth air cylinder, the first pushing handle, the second pushing handle, the two first sliding rails and the two second sliding rails are matched to achieve automatic transferring of the oil pipe joints.

Description

Technical Field

[0001] The invention relates to the field of expansion riveting and press-fitting processes for oil pipe joints, and in particular to an expansion riveting and press-fitting device for oil pipe joints. Background Art

[0002] In the processing of oil pipe joints, expansion riveting and press fitting are important processes.

[0003] Traditional processing methods have problems such as low degree of automation, unstable processing accuracy, and low production efficiency, and are difficult to meet the needs of large-scale industrial production.

[0004] Therefore, it is necessary to provide a device for expanding, riveting and press-fitting an oil pipe joint to solve the above technical problems. Summary of the Invention

[0005] The present invention provides an expansion riveting and press-fitting device for an oil pipe joint, which solves the problems of low automation, unstable processing accuracy, low production efficiency, and the difficulty in meeting the needs of large-scale industrial production in traditional processing methods.

[0006] In order to solve the above technical problems, the present invention provides a device for expanding, riveting and press-fitting a pipe joint, comprising:

[0007] Operating table, mounting frame, first adjustable tie rod cylinder, second adjustable tie rod cylinder, third adjustable tie rod cylinder, first air cylinder, second air cylinder, third air cylinder, fourth air cylinder, fifth air cylinder, sixth air cylinder, seventh air cylinder, eighth air cylinder, first push handle, second push handle, two first slide rails, two second slide rails, two third slide rails, two fourth slide rails and medium load spring;

[0008] A plurality of medium-load springs are respectively installed on the surface of the operating table;

[0009] The first adjustable tie rod oil cylinder is installed at the rear of one side of the operating table surface, and the second adjustable tie rod oil cylinder is installed at the right side of the operating table surface;

[0010] The third adjustable pull rod cylinder is installed at the bottom of the operating table;

[0011] The first cylinder and the second cylinder are symmetrically mounted on the surface of the operating table;

[0012] The third cylinder and the fourth cylinder are respectively installed on both sides of one of the medium-load springs;

[0013] The fifth cylinder and the sixth cylinder are respectively installed on both sides of one of the medium-load springs;

[0014] The first push handle and the second push handle are respectively installed on the surface of the operating table;

[0015] The seventh cylinder and the eighth cylinder are respectively installed on one side of the first push handle and the second push handle;

[0016] The two first slide rails, the two second slide rails and the two fourth slide rails are respectively installed on the surface of the operating table, the surfaces of the first cylinder and the second cylinder.

[0017] Preferably, the third slide rail and the fourth slide rail are used to guide the longitudinal movement of related components.

[0018] Preferably, the eighth cylinder and the seventh cylinder work together to complete the unloading action after the oil pipe joint is press-fitted.

[0019] Preferably, the third cylinder and the fourth cylinder are used together for positioning when the oil pipe joint is press-fitted.

[0020] Preferably, the first slide rail and the second slide rail are used to support and guide the lateral movement of related components.

[0021] Preferably, the third adjustable pull rod cylinder is used for the main action of expanding and riveting the oil pipe joint.

[0022] Preferably, the first cylinder and the second cylinder are used to drive the movement of the first pusher.

[0023] Preferably, the operating table is installed above the mounting frame.

[0024] Preferably, a placement component is provided at the bottom of the mounting frame, and the placement component includes: the mounting seat is connected to the bottom of the mounting frame, the fixing rod is connected to one side of the mounting seat, the movable sleeve is provided on the surface of the fixing rod, the bracket is connected to the surface of the movable sleeve, and the placement plate is connected to one end of the bracket.

[0025] Preferably, the fixing bolt is arranged between the movable sleeve and the fixing rod, and the stopper is connected to one end of the fixing rod.

[0026] Compared with the related art, the oil pipe joint expansion riveting and press-fitting device provided by the present invention has the following features:

[0027] Beneficial effects:

[0028] The present invention provides a device for expanding and riveting and press-fitting oil pipe joints. The expanding and riveting pressure can be adjusted according to oil pipe joints of different specifications through a first adjustable pull rod oil cylinder, a second adjustable pull rod oil cylinder, and a third adjustable pull rod oil cylinder to ensure the expanding and riveting accuracy. The first cylinder, the second cylinder, the third cylinder, the fourth cylinder, the fifth cylinder, the sixth cylinder, the seventh cylinder, the eighth cylinder, the first pusher, the second pusher, two first slide rails, two second slide rails, two third slide rails and two fourth slide rails cooperate to realize the automatic transfer, positioning and press-fitting of the oil pipe joints, thereby greatly improving the processing efficiency. The coordinated work of various components makes the processing process more stable and improves the consistency of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of a first embodiment of a device for expanding, riveting, and press-fitting a pipe joint provided by the present invention;

[0030] Figure 2 for Figure 1 A top view of the expansion riveting and press-fitting device shown;

[0031] Figure 3 for Figure 1 The schematic diagram of the overall three-dimensional structure of the expansion riveting and press-fitting device shown in FIG.

[0032] Figure 4 A schematic structural diagram of a second embodiment of a device for expanding, riveting, and press-fitting a pipe joint provided by the present invention;

[0033] Figure 5 for Figure 4 An enlarged schematic diagram of part A is shown.

[0034] Reference numerals in the figure: 1, operating table; 2, mounting frame; 101a, first adjustable tie-rod cylinder; 101b, second adjustable tie-rod cylinder; 102, third adjustable tie-rod cylinder; 201a, first cylinder; 201b, second cylinder; 202a, third cylinder; 202b, fourth cylinder; 203a, fifth cylinder; 203b, sixth cylinder; 204a, seventh cylinder; 204b, eighth cylinder; 301a, first push handle; 302b, second push handle; 401a, first slide rail; 401b, second slide rail; 402a, third slide rail; 402b, fourth slide rail; 501, medium-load spring;

[0035] 6. Placement assembly; 61. Mounting seat; 62. Fixing rod; 63. Movable sleeve; 64. Bracket; 65. Placement plate; 66. Fixing bolt; 67. Stop block. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] First embodiment

[0038] Please refer to Figure 1 、 Figure 2 and Figure 3 ,in, Figure 1 A schematic structural diagram of a first embodiment of a device for expanding, riveting, and press-fitting a pipe joint provided by the present invention; Figure 2 for Figure 1 A top view of the expansion riveting and press-fitting device shown; Figure 3 for Figure 1 The schematic diagram of the overall three-dimensional structure of the expansion riveting and press-fitting device is shown. A device for expanding riveting and press-fitting a pipe joint includes:

[0039] Operating platform 1, mounting frame 2, first adjustable tie rod cylinder 101a, second adjustable tie rod cylinder 101b, third adjustable tie rod cylinder 102, first cylinder 201a, second cylinder 201b, third cylinder 202a, fourth cylinder 202b, fifth cylinder 203a, sixth cylinder 203b, seventh cylinder 204a, eighth cylinder 204b, first push handle 301a, second push handle 302b, two first slide rails 401a, two second slide rails 401b, two third slide rails 402a, two fourth slide rails 402b, and medium-load spring 501;

[0040] The plurality of medium-load springs 501 are respectively installed on the surface of the operating table 1;

[0041] The first adjustable tie rod cylinder 101a is installed at the rear of one side of the surface of the operating table 1, and the second adjustable tie rod cylinder 101b is installed at the right side of the surface of the operating table 1;

[0042] The third adjustable tie rod cylinder 102 is installed at the bottom of the operating platform 1;

[0043] The first cylinder 201a and the second cylinder 201b are symmetrically installed on the surface of the operating table 1;

[0044] The third cylinder 202a and the fourth cylinder 202b are respectively installed on both sides of one of the medium-load springs 501;

[0045] The fifth cylinder 203a and the sixth cylinder 203b are respectively installed on both sides of one of the medium-load springs 501;

[0046] The first push handle 301a and the second push handle 302b are respectively installed on the surface of the operating table 1;

[0047] The seventh cylinder 204a and the eighth cylinder 204b are respectively installed on one side of the first push handle 301a and the second push handle 302b;

[0048] The two first slide rails 401a, the two second slide rails 401b and the two fourth slide rails 402b are respectively installed on the surface of the operating table 1, the surface of the first cylinder 201a and the surface of the second cylinder 201b.

[0049] The third slide rail 402a and the fourth slide rail 402b are used to guide the longitudinal movement of related components.

[0050] The eighth cylinder 204b and the seventh cylinder 204a work together to complete the unloading action after the oil pipe joint is press-fitted.

[0051] The third cylinder 202a and the fourth cylinder 202b are used together to position the oil pipe joint when it is press-fitted.

[0052] The first slide rail 401a and the second slide rail 401b are used to support and guide the lateral movement of related components.

[0053] The third adjustable pull rod oil cylinder 10 is used for the main action of expanding and riveting the oil pipe joint.

[0054] The first cylinder 201a and the second cylinder 201b are used to drive the movement of the first pusher 301a.

[0055] The operating platform 1 is installed above the mounting frame 2 .

[0056] Operating table 1 and mounting frame 2: Operating table 1 is a rectangular steel structure with anti-slip and wear-resistant plates on the surface, which is used to install core execution components; mounting frame 2 is the bottom support frame, which is welded with angle steel and has adjustable height (adjustment range 0-50mm) to ensure the levelness of the equipment.

[0057] Medium-load spring 501: 4 groups in total, symmetrically installed at the four corners of the operating table 1 surface. Each group of springs has a diameter of 12mm, a free length of 80mm, and an elastic coefficient of 20N / mm. They are used to cushion the impact force during cylinder operation to prevent equipment vibration from affecting processing accuracy.

[0058] Expansion riveting execution system: The first adjustable pull rod cylinder 101a: installed on the rear side of the operating table 1, with a stroke of 150mm and a maximum thrust of 30kN. By adjusting the pull rod length (adjustment range 0-30mm), the opening amplitude of the expansion riveting die is controlled to adapt to the diameter expansion requirements of Φ22mm oil pipe (diameter 22.5mm after expansion).

[0059] The second adjustable tie rod cylinder 101b is installed on the right side of the operating table 1, with a stroke of 100mm. It works together with the first adjustable tie rod cylinder 101a to ensure that the expansion riveting die is evenly expanded through lateral thrust to prevent the oil pipe from deflecting when expanding.

[0060] The third adjustable pull rod cylinder 102: installed in the center of the bottom of the operating table 1, with a stroke of 80mm, pushes the expansion riveting die vertically upward, with a maximum thrust of 40kN. It is the main power source for the expansion riveting action, and its pull rod can be adjusted (adjustment accuracy ±0.1mm) to control the expansion riveting depth.

[0061] Press-fit execution system: The first cylinder 201a and the second cylinder 201b are symmetrically installed at the front end of the operating table 1, with a cylinder diameter of 50mm and a stroke of 120mm. The first pusher 301a is driven to move horizontally through the first slide rail 401a (length 300mm, accuracy ±0.05mm) to achieve press-fit positioning of the oil pipe joint.

[0062] The third cylinder 202a and the fourth cylinder 202b are installed on both sides of the medium-load spring, with a cylinder diameter of 40mm and a stroke of 50mm. They are extended synchronously during press-fitting, and the oil pipe joint is axially limited by a positioning block (hardness HRC45-50), with a positioning accuracy of ±0.2mm.

[0063] Transfer and positioning system: The first pusher 301a and the second pusher 302b: Both are L-shaped aluminum alloy structures with non-slip rubber covered on the surface. The first pusher 301a is driven by the first cylinder 201a and is used to transfer the oil pipe to the expansion and riveting station; the second pusher 302b is driven by the fifth cylinder 203a (cylinder diameter 32mm, stroke 80mm) and is transferred to the press-fitting station through the second slide rail 401b (length 250mm).

[0064] The third slide rail 402a and the fourth slide rail 402b: The third slide rail 402a is a longitudinal guide rail (length 200mm) used for the vertical movement of the expansion riveting mold; the fourth slide rail 402b (length 180mm) is used for the longitudinal positioning of the press-fit assembly block, and the straightness error between the two is ≤0.03mm / m.

[0065] The working principle of the oil pipe joint expansion riveting and press-fitting device provided by the present invention is as follows:

[0066] Loading and positioning: Manually place the Φ22*2.0mm oil pipe into the fixture cavity, insert joint 1 into the expansion riveting positioning groove (groove depth 15mm, diameter 22.1mm), and place joint 2 into the press-fit positioning groove (groove depth 10mm, diameter 22mm). Use a clamp (pneumatic fingers, clamping force 50-100N) to fix the oil pipe.

[0067] When the start switch is pressed, the first cylinder 201a and the second cylinder 201b extend synchronously, driving the first pusher 301a to push the oil pipe to the expansion and riveting station along the first slide rail 401a. The third cylinder 202a and the fourth cylinder 202b extend and support the joint 1 through the positioning block to ensure that there is no displacement during expansion and riveting.

[0068] Expansion riveting execution: the third adjustable tie rod cylinder 102 extends vertically upward (speed 50mm / s), pushing the expansion riveting die (conical structure, taper 15°) into the end of the oil pipe. At the same time, the first adjustable tie rod cylinder 101a and the second adjustable tie rod cylinder 101b horizontally expand the die, expanding the diameter of the oil pipe end from 22mm to 22.5mm, and maintaining pressure for 3s to plastically deform the material.

[0069] After the expansion and riveting are completed, the first adjustable tie rod cylinder 101a, the second adjustable tie rod cylinder 101b and the third adjustable tie rod cylinder 102 are synchronously retreated and reset, and the mold releases the oil pipe.

[0070] Press-fitting execution: The fifth cylinder 203a drives the second pusher 302b to move the oil pipe along the second slide rail 401b to the press-fitting station. The sixth cylinder 203b extends and recalibrates the position of the joint 2 through the press-fitting positioning block.

[0071] Cylinder B (press-fit assembly block driven cylinder, stroke 60mm, thrust 25kN) pushes the assembly block (surface hardness HRC55-60) to press connector 2 into the end of the oil pipe. The press-fit depth is controlled at 8±0.1mm. At the same time, the sensor (photoelectric sensor, response time 0.1ms) detects the press-fit in place signal.

[0072] Unloading and circulation: After the press-fitting is completed, the seventh cylinder 204a and the eighth cylinder 204b work together to drive the unloading push rod (speed 80mm / s) to push the oil pipe out of the fixture and drop it into the unloading chute;

[0073] Each air cylinder and oil cylinder resets, and the equipment enters the next working cycle. The single cycle time is about 12 seconds.

[0074] Compared with the related art, the oil pipe joint expansion riveting and press-fitting device provided by the present invention has the following features:

[0075] Beneficial effects:

[0076] The present invention provides a device for expanding and riveting and press-fitting a pipe joint. The expanding and riveting pressure can be adjusted according to pipe joints of different specifications through a first adjustable pull rod cylinder 101a, a second adjustable pull rod cylinder 101b, and a third adjustable pull rod cylinder 102, thereby ensuring the expanding and riveting accuracy. The first cylinder 201a, the second cylinder 201b, the third cylinder 202a, the fourth cylinder 202b, the fifth cylinder 203a, the sixth cylinder 203b, the seventh cylinder 204a, the eighth cylinder 204b, the first pusher 301a, the second pusher 302b, the two first slide rails 401a, the two second slide rails 401b, the two third slide rails 402a, and the two fourth slide rails 402b cooperate to realize the automatic transfer, positioning, and press-fitting of the pipe joint, thereby greatly improving the processing efficiency. The coordinated work of the various components makes the processing process more stable and improves the consistency of product quality.

[0077] Second embodiment

[0078] Please refer to Figure 4 and Figure 5 Based on the first embodiment of this application, which provides a device for expanding and riveting a pipe joint and press-fitting, the second embodiment of this application provides another device for expanding and riveting a pipe joint and press-fitting. The second embodiment is merely a preferred embodiment of the first embodiment, and implementation of the second embodiment will not affect the implementation of the first embodiment alone.

[0079] Specifically, the difference of the oil pipe joint expansion riveting and press-fitting device provided in the second embodiment of the present application is that, in an oil pipe joint expansion riveting and press-fitting device, a placement component 6 is provided at the bottom of the mounting frame 2, and the placement component 6 includes the mounting seat 61 connected to the bottom of the mounting frame 2, the fixing rod 62 connected to one side of the mounting seat 61, the movable sleeve 63 is sleeved on the surface of the fixing rod 62, the bracket 64 is connected to the surface of the movable sleeve 63, and the placement plate 65 is connected to one end of the bracket 64.

[0080] The fixing bolt 66 is disposed between the movable sleeve 63 and the fixing rod 62 , and the stopper 67 is connected to one end of the fixing rod 62 .

[0081] The mounting seat 61 is a U-shaped steel plate (thickness 10mm) and is fixed to the four corners of the bottom of the mounting frame 2 by bolts. Two fixing rods 62 (diameter 20mm, length 300mm) are welded to each mounting seat. The surface of the fixing rod is processed with an M16 thread section (length 100mm) for adjusting the height of the movable sleeve 63.

[0082] The movable sleeve 63 is a hollow cylindrical structure (inner diameter 22mm), which is sleeved on the fixed rod 62 and can slide up and down along the rod (sliding resistance ≤ 5N); the bracket 64 is an L-shaped angle steel (side length 50mm), one end of which is welded to the movable sleeve 63 and the other end is fixed to the placement plate 65 by bolts.

[0083] The placement plate 65 is a rectangular steel plate (size 500×300×5mm) with a rubber pad (thickness 5mm) on the surface, which is used to store the oil pipes to be processed or finished products; the fixing bolt 66 is an M16 bolt, which passes through the threaded hole of the movable sleeve 63 and is tightened with the fixing rod 62 to lock the position of the movable sleeve, with an adjustment accuracy of ±1mm.

[0084] The stopper 67 is a cylindrical iron block (25 mm in diameter and 30 mm in length) welded to the bottom end of the fixed rod 62 to prevent the movable sleeve 63 from sliding off and serves as a lower limit reference for height adjustment.

[0085] Height adjustment and positioning: according to the operator's height or loading requirements, loosen the fixing bolt 66, slide the movable sleeve 63 up and down, adjust the placement plate 65 to the appropriate height (adjustment range 0-200mm), and tighten the fixing bolt 66 to lock the position.

[0086] The stopper 67 limits the lowest position of the movable sleeve 63, ensuring that the height of the placement plate 65 from the ground is greater than or equal to 300 mm, thereby preventing the workpiece from touching the ground and causing contamination.

[0087] Workpiece storage and retrieval: The Φ22*2.0mm oil pipes to be processed can be neatly placed on the placement plate 65, and the rubber pads prevent the surface of the oil pipes from being scratched; the finished products after press-fitting are pushed to the other side of the placement plate 65 by the unloading push rod, realizing the storage of loading and unloading materials in different areas.

[0088] Flexibility and adaptability: The movable sleeve 63 can rotate around the fixed rod 62 (rotation angle 0-90°) so that the placement plate 65 faces the operator, making it convenient to take and place workpieces; for oil pipes of different lengths (such as 500-1000mm), the height difference of the placement components 6 on both sides can be adjusted to keep the oil pipes placed horizontally.

[0089] Compared with the related art, the oil pipe joint expansion riveting and press-fitting device provided by the present invention has the following features:

[0090] Beneficial effects:

[0091] The present invention provides an expansion riveting and press-fitting device for an oil pipe joint. A mounting seat 61, a fixing rod 62, a movable sleeve 63, a bracket 64, a placement plate 65, a fixing bolt 66 and a stopper 67 are arranged at the bottom of a mounting frame 2 to facilitate the placement of a workpiece.

[0092] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for expanding, riveting and press-fitting a pipe joint, characterized in that: include: Operating table, mounting frame, first adjustable tie rod cylinder, second adjustable tie rod cylinder, third adjustable tie rod cylinder, first air cylinder, second air cylinder, third air cylinder, fourth air cylinder, fifth air cylinder, sixth air cylinder, seventh air cylinder, eighth air cylinder, first push handle, second push handle, two first slide rails, two second slide rails, two third slide rails, two fourth slide rails and medium load spring; A plurality of medium-load springs are respectively installed on the surface of the operating table; The first adjustable tie rod oil cylinder is installed at the rear of one side of the operating table surface, and the second adjustable tie rod oil cylinder is installed at the right side of the operating table surface; The third adjustable pull rod cylinder is installed at the bottom of the operating table; The first cylinder and the second cylinder are symmetrically mounted on the surface of the operating table; The third cylinder and the fourth cylinder are respectively installed on both sides of one of the medium-load springs; The fifth cylinder and the sixth cylinder are respectively installed on both sides of one of the medium-load springs; The first push handle and the second push handle are respectively installed on the surface of the operating table; The seventh cylinder and the eighth cylinder are respectively installed on one side of the first push handle and the second push handle; The two first slide rails, the two second slide rails and the two fourth slide rails are respectively installed on the surface of the operating table, the surfaces of the first cylinder and the second cylinder.

2. The oil pipe joint expansion riveting and press-fitting device according to claim 1, characterized in that: The third slide rail and the fourth slide rail are used for guiding the longitudinal movement of related components.

3. The oil pipe joint expansion riveting and press-fitting device according to claim 1, characterized in that: The eighth cylinder and the seventh cylinder work together to complete the unloading action after the oil pipe joint is press-fitted.

4. The oil pipe joint expansion riveting and press-fitting device according to claim 1, characterized in that: The third cylinder and the fourth cylinder are used together for positioning the oil pipe joint when it is press-fitted.

5. The oil pipe joint expansion riveting and press-fitting device according to claim 1, characterized in that: The first slide rail and the second slide rail are used to support and guide the lateral movement of related components.

6. The oil pipe joint expansion riveting and press-fitting device according to claim 1, characterized in that: The third adjustable pull rod oil cylinder is used for the main action of expanding and riveting the oil pipe joint.

7. The oil pipe joint expansion riveting and press-fitting device according to claim 1, characterized in that: The first cylinder and the second cylinder are used to drive the movement of the first pusher.

8. The oil pipe joint expansion riveting and press-fitting device according to claim 1, characterized in that: The operating table is installed above the mounting frame.

9. The oil pipe joint expansion riveting and press-fitting device according to claim 1, characterized in that: A placement component is provided at the bottom of the mounting frame, and the placement component includes: the mounting seat is connected to the bottom of the mounting frame, the fixing rod is connected to one side of the mounting seat, the movable sleeve is provided on the surface of the fixing rod, the bracket is connected to the surface of the movable sleeve, and the placement plate is connected to one end of the bracket.

10. The oil pipe joint expansion riveting and press-fitting device according to claim 9, characterized in that: The fixing bolt is arranged between the movable sleeve and the fixing rod, and the stopper is connected to one end of the fixing rod.

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