Expansion assembly for connecting pipe

Abstract

The utility model discloses an expansion assembly for a connecting pipe, which belongs to the technical field of expansion assembly and comprises four pedestals, a frame is fixedly connected to the upper ends of the four pedestals jointly, four vertical rods are fixedly connected to the upper end of the frame, and a top frame is fixedly connected to the upper ends of the four vertical rods jointly. The assembling mechanism is matched with the driving assembly, a large pipe and a small pipe of a vehicle oil cooler pipe can be rapidly assembled together in an expanding and pressing mode, the working procedure that internal threads are machined on the large pipe and external threads are machined on the small pipe is omitted, aluminum scraps are prevented from being generated during thread machining, and tedious work of thread screwing is replaced with expanding and pressing is avoided. According to the oil cooler pipe expanding and pressing assembly machine, only manual feeding and discharging work is needed, the production efficiency is improved, through cooperation of the macro sensor and the controller, the whole expanding and pressing assembly process is conducted under monitoring of the macro sensor and control of the controller, the product quality and consistency are ensured, and the function of conducting expanding and pressing assembly on an oil cooler pipe rapidly can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion assembly, and more specifically, to an expansion assembly for connecting pipes. Background Technique

[0002] Expansion joint is to use an expansion tube tool to squeeze the end of the tube extending into the tube sheet hole, so that the tube end undergoes plastic deformation, and the tube sheet hole undergoes elastic deformation at the same time. When the expansion tube tool is removed, the tube sheet hole elastically contracts, and a certain squeezing pressure is generated between the tube sheet and the tube, and they are closely attached together to achieve the purpose of sealed and fastened connection. The pipes of the automotive oil cooler are divided into inlet and outlet pipes. According to the distribution of the lubricating oil, there will be branches on the inlet and outlet pipes. For pipes with branches, the processing difficulty becomes greater and the process is complex. Due to process requirements, the inlet and outlet pipes of the oil cooler need to be riveted to the end plate of the oil cooler and then press-fitted with the radiator fins of the oil cooler, and finally welded in a vacuum furnace. It is necessary to process holes first and then process internal and external threads. There are many processes and long processing time. Moreover, due to the fine thread, there are also torque requirements, and the assembly time is also long. In addition, due to all chip-producing machining, it is difficult to ensure the cleanliness of the pipes.

[0003] Chinese Patent Authorization Publication No.: CN211161567 provides a radial expansion joint device for pipe fittings. This solution can complete one expansion joint processing by moving the piston rod of the hydraulic cylinder back and forth once, without the need for precision machining of water holes and water pipes by a numerical control machine tool or machining center. When the clearance between the water pipe and the water hole is much larger than 0.05 mm, the water pipe can be inserted into the water hole for expansion joint, which has the advantage of low cost. However, there are still the following defects in the specific implementation process: there is no fixing device, and the position accuracy during expansion joint cannot be guaranteed.

[0004] Therefore, an expansion assembly for connecting pipes is proposed for the above problems. Content of the Utility Model

[0005] 1. Technical Problems to be Solved

[0006] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide an expansion assembly for connecting pipes, which can realize the function of quickly expanding and assembling the oil cooler pipes.

[0007] 2. Technical Solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] An expansion assembly for connecting pipes includes four pad seats. A frame is fixedly connected to the upper ends of the four pad seats. Four vertical rods are fixedly connected to the upper end of the frame. A top frame is fixedly connected to the upper ends of the four vertical rods. An assembly mechanism is fixedly connected to the upper end of the top frame.

[0010] Further, the assembly mechanism includes an operating table, on the upper end of which a macro sensor is fixedly connected, a controller is fixedly connected, a driving assembly is fixedly connected, a guiding assembly is fixedly connected, and a positioning assembly is fixedly connected.

[0011] Further, the driving assembly includes a cylinder, the output end of the cylinder is fixedly connected with a driving rod through a coupling, a swelling core is fixedly connected to the right end of the driving rod, a pushing plate is fixedly connected to the outer surface of the driving rod, and two limiting rods are fixedly connected to the right end of the pushing plate.

[0012] Further, the guiding assembly includes a guiding seat, a driving groove penetrating the guiding seat is formed at the left end of the guiding seat, and two guiding grooves penetrating the guiding seat are formed at the left end of the guiding seat.

[0013] Further, the positioning assembly includes a lower shell, a hinge is fixedly connected to the upper end, an upper shell is fixedly connected to the upper end of the hinge, a grip is fixedly connected to the upper end of the upper shell, two limiting grooves are formed at the left end of the upper shell, a large pipe is movably connected between the inner surface of the upper end of the lower shell and the inner surface of the lower end of the upper shell, and a small pipe is fixedly connected to the inner surface of the large pipe.

[0014] Further, the outer surface of the driving rod is slidably connected to the inner surface of the driving groove, and the outer surfaces of the two limiting rods are respectively slidably connected to the inner surfaces of the two guiding grooves.

[0015] Further, the outer surface of the swelling core is slidably connected to the inner surface of the small pipe, and the outer surfaces of the two limiting rods are respectively slidably connected to the inner surfaces of the two limiting grooves.

[0016] Further, the lower end of the cylinder is fixedly connected to the upper end of the operating table, the lower end of the guiding seat is fixedly connected to the upper end of the operating table, the lower end of the lower shell is fixedly connected to the upper end of the operating table, and the lower end of the operating table is fixedly connected to the upper end of the top frame.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present utility model are as follows:

[0019] (1) With the cooperation of the assembly mechanism and the driving assembly, the large pipe and the small pipe of the vehicle oil cooler pipe can be quickly assembled by swelling, eliminating the processes of machining internal threads for the large pipe and external threads for the small pipe, avoiding the generation of aluminum chips during thread machining, replacing the cumbersome work of screwing threads with swelling, and only requiring manual loading and unloading, thus improving the production efficiency.

[0020] (2) Through the cooperation of the macro sensor and the controller, the entire inflation and assembly process is monitored by the macro sensor and precisely completed under the control of the controller, ensuring product quality and product consistency.

[0021] (3) Through the cooperation of the guiding component and the positioning component, it can ensure the connection position between the large pipe and the small pipe of the vehicle oil cooler pipe, reduce the probability of production defects, and improve the practicability of the assembly method. Description of the Drawings

[0022] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 is a schematic diagram of the assembly mechanism of the present utility model;

[0024] Figure 3 is a schematic diagram of the driving component of the present utility model;

[0025] Figure 4 is a schematic diagram of the guiding component of the present utility model;

[0026] Figure 5 is a schematic diagram of the positioning component of the present utility model.

[0027] Explanation of the reference numerals in the drawings:

[0028] 1. Pad base; 2. Frame; 3. Vertical rod; 4. Top frame; 5. Assembly mechanism; 51. Operating table; 52. Macro sensor; 53. Controller; 54. Driving component; 541. Cylinder; 542. Driving rod; 543. Inflation core; 544. Pushing plate; 545. Limiting rod; 55. Guiding component; 551. Guiding seat; 552. Driving groove; 553. Guiding groove; 56. Positioning component; 561. Lower shell; 562. Hinge; 563. Upper shell; 564. Handle; 565. Limiting groove; 566. Large pipe; 567. Small pipe. Detailed Embodiment

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Embodiment:

[0033] Please refer to Figures 1-5 , a connection pipe is assembled by expansion and pressing, which includes four pad seats 1. A frame 2 is fixedly connected to the upper ends of the four pad seats 1 together. Four vertical rods 3 are fixedly connected to the upper end of the frame 2. A top frame 4 is fixedly connected to the upper ends of the four vertical rods 3 together. An assembly mechanism 5 is fixedly connected to the upper end of the top frame 4.

[0034] In this solution, the frame 2 is supported by the four pad seats 1. Four vertical rods 3 are installed by using the frame 2. The top frame 4 is supported by the four vertical rods 3, and an assembly mechanism 5 is installed at the upper end of the top frame 4. Through the action of the assembly mechanism 5, the vehicle oil cooler pipe is expanded and pressed for connection, improving the efficiency.

[0035] Please refer to Figures 2-5 , the assembly mechanism 5 includes an operation table 51. The lower end of the operation table 51 is fixedly connected to the upper end of the top frame 4. A micro sensor 52 is fixedly connected to the upper end of the operation table 51. A controller 53 is fixedly connected to the upper end of the operation table 51. A driving component 54 is fixedly connected to the upper end of the operation table 51. A guiding component 55 is fixedly connected to the upper end of the operation table 51. A positioning component 56 is fixedly connected to the upper end of the operation table 51.

[0036] The driving component 54 includes a cylinder 541. The lower end of the cylinder 541 is fixedly connected to the upper end of the operating table 51. The output end of the cylinder 541 is fixedly connected with a driving rod 542 through a coupling. The outer surface of the driving rod 542 is slidably connected with the inner surface of the driving groove 552. The right end of the driving rod 542 is fixedly connected with a swelling core 543. The outer surface of the driving rod 542 is fixedly connected with a pushing plate 544. The right end of the pushing plate 544 is fixedly connected with two limiting rods 545.

[0037] The guiding component 55 includes a guiding seat 551. The lower end of the guiding seat 551 is fixedly connected to the upper end of the operating table 51. A driving groove 552 penetrating the guiding seat 551 is formed at the left end of the guiding seat 551. Two guiding grooves 553 penetrating the guiding seat 551 are formed at the left end of the guiding seat 551. The outer surfaces of the two limiting rods 545 are respectively slidably connected with the inner surfaces of the two guiding grooves 553.

[0038] The positioning component 56 includes a lower shell 561. The lower end of the lower shell 561 is fixedly connected to the upper end of the operating table 51. A hinge 562 is fixedly connected to the upper end. An upper shell 563 is fixedly connected to the upper end of the hinge 562. A handle 564 is fixedly connected to the upper end of the upper shell 563. Two limiting grooves 565 are formed at the left end of the upper shell 563. The outer surfaces of the two limiting rods 545 are respectively slidably connected with the inner surfaces of the two limiting grooves 565. A large pipe 566 is jointly movably connected to the inner surface of the upper end of the lower shell 561 and the inner surface of the lower end of the upper shell 563. A small pipe 567 is fixedly connected to the inner surface of the large pipe 566. The outer surface of the swelling core 543 is slidably connected with the inner surface of the small pipe 567.

[0039] In this solution, by pulling up the handle 564, the upper shell 563 deflects upward under the action of the handle 564 and in cooperation with the hinge 562, so that the upper shell 563 can be opened. At this time, the large pipe 566 and the small pipe 567 to be assembled are placed into the groove at the upper end of the lower shell 561. After the placement is completed, the handle 564 is pressed down to close the upper shell 563. At this time, the cylinder 541 is started, so that the driving rod 542 extends to the right under the action of the cylinder 541. When the driving rod 542 extends to the right, it will drive the swelling core 543 located at its right end together, and at the same time, it will also drive the pushing plate 544 located on its outer surface together. The pushing plate 544 will cause the two limiting rods 545 to move to the right together. At this time, the swelling core 543 and the driving rod 542 will pass through the driving groove 552, and the two limiting rods 545 will respectively pass through the two guiding grooves 553. With the continuous action of the cylinder 541, the swelling core 543 will extend into the inner surface of the small pipe 567, and the two limiting rods 545 will also be inserted into the two limiting grooves 565. At this time, the large pipe 566 and the small pipe 567 will be jointly acted on by the upper shell 563 and the lower shell 561 and be firmly fixed. By compressing air in the cylinder 541 and cooperating with the swelling core 543, the connection part between the small pipe 567 and the large pipe 566 is assembled by swelling.

[0040] Working principle: When it is necessary to expand and press-fit the vehicle oil cooler tube, first pull the grip 564 upward to open the upper shell 563. At this time, place the large tube 566 and the small tube 567 to be assembled into the groove at the upper end of the lower shell 561. After placement, press the grip 564 to close the upper shell 563. Then, control the controller 53 to start the cylinder 541, so that the driving rod 542 and the expanding core 543 extend to the right under the action of the cylinder 541. At the same time, it will also drive the pushing plate 544 and the two limiting rods 545 located on its outer surface to move to the right together, so that the expanding core 543 and the driving rod 542 pass through the driving groove 552, and the two limiting rods 545 pass through the two guiding grooves 553 respectively. With the continuous action of the cylinder 541, the expanding core 543 extends into the inner surface of the small tube 567, and the two limiting rods 545 also insert into the two limiting grooves 565. At this time, the large tube 566 and the small tube 567 are simultaneously fixed firmly under the combined action of the upper shell 563 and the lower shell 561. By compressing air in the cylinder 541 and cooperating with the expanding core 543, the connection between the small tube 567 and the large tube 566 is expanded and press-fitted together. When the length of the expanding core 543 extending into the small tube 567 reaches the monitoring distance of the micro sensor 52, the controller 53 will receive a signal and control the cylinder 541 to drive the expanding core 543 and the driving rod 542 to move to the left together. At this time, the two limiting rods 545 no longer limit the two limiting grooves 565. Open the upper shell 563, take out the assembled oil cooler tube, and after placing the large tube 566 and the small tube 567 to be assembled, the above operation can be repeated.

[0041] The above is only the preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A swelling and pressing assembly for a connecting pipe, comprising four pad seats (1), characterized in that: The upper ends of the four base seats (1) are fixedly connected to a frame (2) together. The upper end of the frame (2) is fixedly connected to four vertical rods (3). The upper ends of the four vertical rods (3) are fixedly connected to a top frame (4) together. The upper end of the top frame (4) is fixedly connected to an assembly mechanism (5).

2. The expansion assembly for a connecting pipe according to claim 1, wherein: The assembly mechanism (5) includes an operating table (51). The upper end of the operating table (51) is fixedly connected to a macro sensor (52). The upper end of the operating table (51) is fixedly connected to a controller (53). The upper end of the operating table (51) is fixedly connected to a driving component (54). The upper end of the operating table (51) is fixedly connected to a guiding component (55). The upper end of the operating table (51) is fixedly connected to a positioning component (56).

3. A swelling and pressing assembly for a connecting pipe according to claim 2, characterized in that: The driving component (54) includes a cylinder (541). The output end of the cylinder (541) is fixedly connected to a driving rod (542) through a coupling. The right end of the driving rod (542) is fixedly connected to a swelling core (543). The outer surface of the driving rod (542) is fixedly connected to a pushing plate (544). The right end of the pushing plate (544) is fixedly connected to two limiting rods (545).

4. A swelling and pressing assembly for a connecting pipe according to claim 3, characterized in that: The guiding component (55) includes a guiding seat (551). A driving groove (552) penetrating the guiding seat (551) is opened at the left end of the guiding seat (551). Two guiding grooves (553) penetrating the guiding seat (551) are opened at the left end of the guiding seat (551).

5. A swelling and pressing assembly for a connecting pipe according to claim 4, characterized in that: The positioning component (56) includes a lower shell (561). A hinge (562) is fixedly connected to the upper end. The upper end of the hinge (562) is fixedly connected to an upper shell (563). A grip (564) is fixedly connected to the upper end of the upper shell (563). Two limiting grooves (565) are opened at the left end of the upper shell (563). A large tube (566) is movably connected to the inner surface of the upper end of the lower shell (561) and the inner surface of the lower end of the upper shell (563) together. A small tube (567) is fixedly connected to the inner surface of the large tube (566).

6. A swelling and pressing assembly for a connecting pipe according to claim 4, characterized in that: The outer surface of the driving rod (542) is slidably connected to the inner surface of the driving groove (552). The outer surfaces of the two limiting rods (545) are respectively slidably connected to the inner surfaces of the two guiding grooves (553).

7. A swelling and pressing assembly for a connecting pipe according to claim 5, characterized in that: The outer surface of the swelling core (543) is slidably connected to the inner surface of the small tube (567). The outer surfaces of the two limiting rods (545) are respectively slidably connected to the inner surfaces of the two limiting grooves (565).

8. A swelling and pressing assembly for a connecting pipe according to claim 5, characterized in that: The lower end of the cylinder (541) is fixedly connected to the upper end of the operating table (51). The lower end of the guiding seat (551) is fixedly connected to the upper end of the operating table (51). The lower end of the lower shell (561) is fixedly connected to the upper end of the operating table (51). The lower end of the operating table (51) is fixedly connected to the upper end of the top frame (4).

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