Rectangular pipe expanding machine

Abstract

The utility model relates to a rectangular pipe expanding machine which comprises a working table, a mounting seat is arranged above the working table, rectangular pipe expanding dies are symmetrically fixed to the two sides of the mounting seat, a first driving mechanism is arranged below the working table and used for driving the mounting seat to move left and right in a reciprocating mode, and positioning mechanisms are arranged on the two sides above the working table respectively. The positioning mechanism is used for abutting against and limiting the end, away from the flared opening, of the pipeline, and two fastening mechanisms are arranged above the workbench. Two fastening stations are formed on the two sides of the mounting base through the positioning mechanism and the fastening mechanism, the mounting base is driven to move left and right in cooperation with the first driving mechanism, the rectangular pipe expanding dies on the two sides can be driven to conduct flaring on pipes on the two sides, two-time flaring machining is achieved in a reciprocating period, and the flaring efficiency is improved. And when flaring machining is carried out on one side, feeding and discharging can be carried out on the fastening station on the other side, the gap duration of flaring machining of the two pipes is effectively shortened, and then the pipe flaring machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tube expanding machines, in particular to a rectangular tube expanding machine. Background Art

[0002] During the pipeline layout process, if the pipeline is not long enough and needs to be butt-jointed, the existing practice is to expand one of the pipelines, insert the other pipe into the expanded pipeline, and then butt-weld it.

[0003] In the prior art, a pipe expander is usually used to expand the pipe. The traditional pipe expander only has one pipe expanding station. After the expansion of the previous pipe is completed, the pipe needs to be removed and then the next pipe needs to be fixed before the expansion of the next pipe can be carried out. This results in a long interval between the expansion processes of the two pipes, which reduces the processing efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a double-station high-efficiency rectangular pipe expanding machine, which effectively solves the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions.

[0006] A rectangular pipe expanding machine comprises a workbench, a mounting seat is arranged above the workbench, rectangular pipe expanding molds are symmetrically fixed on both sides of the mounting seat, a first driving mechanism is arranged below the workbench, the first driving mechanism is used to drive the mounting seat to move back and forth left and right, positioning mechanisms are respectively arranged on both sides above the workbench, the positioning mechanisms are used to interfere and limit the end of the pipe away from the expanded opening, two fastening mechanisms are arranged above the workbench, the fastening mechanisms are respectively arranged between the side of the mounting seat and the positioning mechanism on the same side, the fastening mechanisms are used to fasten and limit the pipe, and the positioning mechanism and the fastening mechanism on the same side form a fastening station for fixing the pipe.

[0007] It can be seen that two fastening stations are formed on both sides of the mounting seat by the positioning mechanism and the fastening mechanism arranged on both sides of the workbench. The mounting seat is driven to move left and right in cooperation with the first driving mechanism, which can drive the rectangular tube expansion molds on both sides to expand the tubes on both sides respectively. In one reciprocating cycle, two expansion processes are realized. When the expansion process is carried out on one side, the fastening station on the other side can be used for loading and unloading, which effectively reduces the interval time between the expansion processes of the two tubes, thereby improving the efficiency of the tube expansion process.

[0008] Furthermore, a groove cavity is provided in the workbench which passes through from top to bottom. Two guide rods are installed in the groove cavity and extend along the translation direction of the mounting seat. A sliding seat is slidably installed on the two guide rods. The mounting seat is fixed on the upper surface of the sliding seat. The first driving mechanism is connected to the sliding seat.

[0009] Furthermore, the first driving mechanism includes a fixed frame, a first hydraulic cylinder, a connecting arm and a connecting seat. The first hydraulic cylinder is fixed to the lower surface of the workbench through the fixed frame, the connecting seat is fixed to the lower end surface of the sliding seat, one end of the connecting arm is fixed to the end of the telescopic rod of the first hydraulic cylinder, and the other end is fixed to the side of the connecting seat.

[0010] Furthermore, the positioning mechanism includes a placing plate, a positioning block and an adjustment mechanism. The placing plate is fixed to the side of the workbench, the positioning block is arranged above the placing plate, and the bottom of the positioning block is slidingly fitted with the upper surface of the placing plate. The adjustment mechanism is arranged at the side end of the placing plate, and the adjustment mechanism is used to drive the positioning block to fit the placing plate for sliding adjustment.

[0011] Furthermore, the adjustment mechanism includes a mounting block and an adjusting screw. The mounting block is fixed to the side end of the placement plate. The mounting block is provided with threaded holes with both ends passing through. The adjusting screw is threadedly matched and installed in the threaded hole. One end of the adjusting screw is rotatably connected to the positioning block, and a pinch handle is installed at the other end.

[0012] Furthermore, the fastening mechanism includes a fixed clamp seat, a dynamic clamp seat and a second driving mechanism. The fixed clamp seat is fixed on the upper surface of the workbench, the second driving mechanism is arranged above the workbench, and the dynamic clamp seat is arranged above the fixed clamp seat through the second driving mechanism. The second driving mechanism is used to drive the dynamic clamp seat to press down and press the pipe onto the fixed clamp seat.

[0013] Furthermore, a first concave cavity is provided on the fixed clamp seat, and a second concave cavity is provided at the lower end of the dynamic clamp seat. When the dynamic clamp seat is pressed against the fixed clamp seat, the first concave cavity and the second concave cavity form a rectangular clamp cavity matching the pipe.

[0014] Furthermore, the second driving mechanism includes a vertical frame, a suspension and a second hydraulic cylinder. The vertical frame is vertically fixed on the upper surface of the workbench, the suspension is fixed at the upper end of the vertical frame, the second hydraulic cylinder is vertically fixed on the upper surface of the suspension, and the telescopic rod of the second hydraulic cylinder extends through and extends to the bottom of the suspension and is fixedly connected to the dynamic clamp seat.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0016] 1. The utility model forms two fastening stations on both sides of the mounting seat through the positioning mechanism and the fastening mechanism arranged on both sides of the workbench, and cooperates with the first driving mechanism to drive the mounting seat to move left and right, which can drive the rectangular tube expanding molds on both sides to expand the tubes on both sides respectively. In one reciprocating cycle, two expansion processes are realized, and when the expansion process is carried out on one side, the fastening station on the other side can load and unload materials, which effectively reduces the interval time between the expansion processes of the two tubes, thereby improving the efficiency of the tube expansion process.

[0017] 2. The utility model can drive the positioning block to slide left and right in close contact with the upper surface of the placement plate by holding the pinch handle and twisting the adjustment screw in the forward and reverse directions, thereby realizing the position adjustment of the positioning block, facilitating the positioning of pipes of different lengths and sizes, and having high versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the installation of the mounting seat structure in the utility model;

[0020] Figure 3 It is a detailed structural diagram of the first driving mechanism in the utility model;

[0021] Figure 4 It is a detailed structural diagram of the positioning mechanism in the utility model;

[0022] Figure 5 It is a detailed structural diagram of the fastening mechanism in the utility model;

[0023] Figure 6 It is a schematic diagram of the coordination of two clamping seat structures in the utility model.

[0024] In the figure: 1. workbench; 11. groove cavity; 2. mounting seat; 21. guide rod; 22. sliding seat; 3. rectangular tube expansion mold; 4. first driving mechanism; 41. fixed frame; 42. first hydraulic cylinder; 43. connecting arm; 44. connecting seat; 5. positioning mechanism; 51. placement plate; 52. positioning block; 53. adjusting mechanism; 531. mounting block; 532. threaded hole; 533. adjusting screw; 534. pinching handle; 6. fastening mechanism; 601. rectangular clamping cavity; 61. fixed clamping seat; 611. first concave cavity; 62. dynamic clamping seat; 621. second concave cavity; 63. second driving mechanism; 631. stand; 632. suspension; 633. second hydraulic cylinder. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present utility model, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present utility model, 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 cannot be understood as a limitation on the embodiments of the present utility model.

[0027] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0028] See also Figure 1-Figure 6 The utility model provides a rectangular tube expanding machine, including a workbench 1, a mounting seat 2 is provided above the workbench 1, rectangular tube expanding molds 3 are symmetrically fixed on both sides of the mounting seat 2, a first driving mechanism 4 is provided below the workbench 1, the first driving mechanism 4 is used to drive the mounting seat 2 to move back and forth left and right, positioning mechanisms 5 are respectively provided on both sides above the workbench 1, the positioning mechanism 5 is used to resist and limit the end of the pipe away from the expanded mouth, two fastening mechanisms 6 are provided above the workbench 1, the fastening mechanisms 6 are respectively arranged between the side of the mounting seat 2 and the positioning mechanism 5 on the same side, the fastening mechanism 6 is used to fasten and limit the pipe, and the positioning mechanism 5 and the fastening mechanism 6 on the same side form a fastening station for fixing the pipe.

[0029] When the rectangular tube expander is used to expand the pipe, the positioning mechanism 5 and the fastening mechanism 6 are used to limit the pipe on the side of the mounting seat 2, and the first driving mechanism 4 is used to drive the mounting seat 2 to move toward the end of the pipe to be expanded, until the rectangular tube expansion mold 3 is driven to align and enter the pipe. As the first driving mechanism 4 continues to move, the rectangular tube expansion mold 3 can be used to open the mouth of the pipe to achieve the expansion of the pipe. The device forms two fastening stations on both sides of the mounting seat 2 through the positioning mechanism 5 and the fastening mechanism 6 arranged on both sides of the workbench 1. The first driving mechanism 4 is used to drive the mounting seat 2 to move left and right, and the rectangular tube expansion molds 3 on both sides are driven to expand the pipes on both sides respectively. In one reciprocating cycle, two expansion processes are achieved, and when the expansion process is performed on one side, the fastening station on the other side can load and unload materials, effectively reducing the interval time between the expansion processes of the two pipes, thereby improving the efficiency of the pipe expansion process.

[0030] Specifically, the workbench 1 is provided with a groove cavity 11 which passes through from top to bottom, and two guide rods 21 are installed in the groove cavity 11, both extending along the translation direction of the mounting seat 2, and a sliding seat 22 is slidably installed on the two guide rods 21. The mounting seat 2 is fixed on the upper surface of the sliding seat 22, and the first driving mechanism 4 is connected to the sliding seat 22. Through the sliding cooperation between the sliding seat 22 and the guide rod 21, a limiting guiding function is provided for the mounting seat 2, thereby ensuring that the movement and adjustment of the mounting seat 2 are smooth and stable.

[0031] Specifically, the first driving mechanism 4 includes a fixed frame 41, a first hydraulic cylinder 42, a connecting arm 43 and a connecting seat 44. The first hydraulic cylinder 42 is fixed to the lower surface of the workbench 1 through the fixed frame 41, and the connecting seat 44 is fixed to the lower end surface of the sliding seat 22. One end of the connecting arm 43 is fixed to the end of the telescopic rod of the first hydraulic cylinder 42, and the other end is fixed to the side of the connecting seat 44. The first hydraulic cylinder 42 completes a telescopic action. Under the fixed connection between the connecting arm 43 and the connecting seat 44, the sliding seat 22 and the mounting seat 2 can be driven to complete a reciprocating translation, thereby providing a stable drive for the movement and adjustment of the mounting seat 2.

[0032] Specifically, the positioning mechanism 5 includes a placement plate 51, a positioning block 52 and an adjustment mechanism 53. The placement plate 51 is fixed to the side of the workbench 1, the positioning block 52 is arranged above the placement plate 51, and the bottom of the positioning block 52 is slidably fitted with the upper surface of the placement plate 51, and the adjustment mechanism 53 is arranged at the side end of the placement plate 51. The adjustment mechanism 53 is used to drive the positioning block 52 to fit the placement plate 51 for sliding adjustment. During the expansion process, the pipe is placed on the placement plate 51, and it is ensured that the end of the pipe away from the expanded end is in contact with the positioning block 52. The positioning block 52 can block and limit the pipe to prevent the rectangular expansion mold 3 from squeezing the pipe and causing the pipe to shift, thereby affecting the expansion process.

[0033] Specifically, the adjustment mechanism 53 includes a mounting block 531 and an adjusting screw 533. The mounting block 531 is fixed to the side end of the placement plate 51. The mounting block 531 is provided with a threaded hole 532 with two ends passing through. The adjusting screw 533 is threadedly matched and installed in the threaded hole 532. One end of the adjusting screw 533 is rotatably connected to the positioning block 52, and the other end is provided with a pinch handle 534. By holding the pinch handle 534 and twisting the adjusting screw 533 in forward and reverse directions, the positioning block 52 can be driven to slide left and right against the upper surface of the placement plate 51, thereby realizing the position adjustment of the positioning block 52, which is convenient for limiting pipes of different lengths and sizes, and has high versatility.

[0034] Specifically, the fastening mechanism 6 includes a fixed clamp seat 61, a dynamic clamp seat 62 and a second driving mechanism 63. The fixed clamp seat 61 is fixed on the upper surface of the workbench 1, and the second driving mechanism 63 is arranged above the workbench 1. The dynamic clamp seat 62 is arranged above the fixed clamp seat 61 through the second driving mechanism 63. The second driving mechanism 63 is used to drive the dynamic clamp seat 62 to press down, press the pipe on the fixed clamp seat 61, and place the pipe on the fixed clamp seat 61. The dynamic clamp seat 62 is driven downward by the second driving mechanism 63 to cooperate with the fixed clamp seat 61 to clamp the pipe to prevent the pipe from sliding back and forth and affecting the expanding process. The positioning mechanism 5 cooperates with the pipe limit to tighten the pipe and improve the stability of the expanding process.

[0035] Specifically, a first concave cavity 611 is provided on the fixed clamp seat 61, and a second concave cavity 621 is provided at the lower end of the dynamic clamp seat 62. When the dynamic clamp seat 62 is pressed against the top of the fixed clamp seat 61, the first concave cavity 611 and the second concave cavity 621 form a rectangular clamp cavity 601 that matches the pipe. The pipe is matched and inserted into the first concave cavity 611. When the dynamic clamp seat 62 is pressed down, the dynamic clamp seat 62 will eventually be pressed against the fixed clamp seat 61, and the pipe will eventually be limited in the rectangular clamp cavity 601 to ensure that it will not swing or deviate at will.

[0036] Specifically, the second driving mechanism 63 includes a frame 631, a suspension 632 and a second hydraulic cylinder 633. The frame 631 is vertically fixed on the upper surface of the workbench 1, the suspension 632 is fixed at the upper end of the frame 631, and the second hydraulic cylinder 633 is vertically fixed on the upper surface of the suspension 632. The telescopic rod of the second hydraulic cylinder 633 extends through and extends to the bottom of the suspension 632 and is fixedly connected to the dynamic clamp seat 62. Through the extension work of the second hydraulic cylinder 633, the dynamic clamp seat 62 can be pushed downward to realize the downward pressing action. Through the retraction work of the second hydraulic cylinder 633, the dynamic clamp seat 62 can be driven to move upward to realize the resetting action of the dynamic clamp seat 62.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A rectangular tube expanding machine, comprising a workbench (1), characterized in that: A mounting seat (2) is provided above the workbench (1), and rectangular tube expansion molds (3) are symmetrically fixed on both sides of the mounting seat (2). A first driving mechanism (4) is provided below the workbench (1), and the first driving mechanism (4) is used to drive the mounting seat (2) to move back and forth left and right; Positioning mechanisms (5) are respectively provided on both sides above the workbench (1), and the positioning mechanisms (5) are used to interfere and limit the end of the pipe away from the expanded end; Two fastening mechanisms (6) are arranged above the workbench (1), and the fastening mechanisms (6) are respectively arranged between the side of the mounting seat (2) and the positioning mechanism (5) on the same side, and the fastening mechanisms (6) are used to fasten and limit the pipeline; The positioning mechanism (5) and the fastening mechanism (6) on the same side form a fastening station for fixing the pipe.

2. A rectangular tube expanding machine according to claim 1, characterized in that: The workbench (1) is provided with a groove cavity (11) which penetrates vertically, and two guide rods (21) are installed in the groove cavity (11) and extend along the translation direction of the mounting seat (2); A sliding seat (22) is slidably mounted on the two guide rods (21), and the mounting seat (2) is fixed on the upper surface of the sliding seat (22); The first driving mechanism (4) is connected to the sliding seat (22).

3. A rectangular tube expanding machine according to claim 2, characterized in that: The first driving mechanism (4) comprises a fixing frame (41), a first hydraulic cylinder (42), a connecting arm (43) and a connecting seat (44); The first hydraulic cylinder (42) is fixed to the lower surface of the workbench (1) via the fixing frame (41); The connecting seat (44) is fixed on the lower end surface of the sliding seat (22); One end of the connecting arm (43) is fixed to the end of the telescopic rod of the first hydraulic cylinder (42), and the other end is fixed to the side of the connecting seat (44).

4. A rectangular tube expanding machine according to claim 1, characterized in that: The positioning mechanism (5) comprises a placement plate (51), a positioning block (52) and an adjustment mechanism (53); The placement plate (51) is fixed to the side of the workbench (1), the positioning block (52) is arranged above the placement plate (51), and the bottom of the positioning block (52) is slidably fitted with the upper surface of the placement plate (51); The adjustment mechanism (53) is arranged at the side end of the placement plate (51), and the adjustment mechanism (53) is used to drive the positioning block (52) to fit the placement plate (51) for sliding adjustment.

5. A rectangular tube expanding machine according to claim 4, characterized in that: The adjustment mechanism (53) comprises a mounting block (531) and an adjustment screw (533); The mounting block (531) is fixed to the side end of the placement plate (51), and the mounting block (531) is provided with threaded holes (532) with two ends passing through; The adjusting screw rod (533) is threadably mounted in the threaded hole (532); one end of the adjusting screw rod (533) is rotatably connected to the positioning block (52), and the other end is provided with a gripping handle (534).

6. A rectangular tube expanding machine according to claim 1, characterized in that: The fastening mechanism (6) comprises a fixed clamping seat (61), a movable clamping seat (62) and a second driving mechanism (63); The fixed clamp seat (61) is fixed on the upper surface of the workbench (1); The second driving mechanism (63) is arranged above the workbench (1), and the dynamic clamping seat (62) is arranged above the fixed clamping seat (61) through the second driving mechanism (63); The second driving mechanism (63) is used to drive the movable clamp seat (62) to press downward, thereby pressing the pipe tightly onto the fixed clamp seat (61).

7. A rectangular tube expanding machine according to claim 6, characterized in that: The fixed clamp seat (61) is provided with a first concave cavity (611), and the lower end of the movable clamp seat (62) is provided with a second concave cavity (621); When the dynamic clamp seat (62) is pressed against the fixed clamp seat (61), the first concave cavity (611) and the second concave cavity (621) form a rectangular clamp cavity (601) matching the pipe.

8. A rectangular tube expanding machine according to claim 6, characterized in that: The second driving mechanism (63) comprises a stand (631), a suspension (632) and a second hydraulic cylinder (633); The stand (631) is vertically fixed on the upper surface of the workbench (1), and the suspension (632) is fixed at the upper end of the stand (631); The second hydraulic cylinder (633) is vertically fixed on the upper surface of the suspension (632); the telescopic rod of the second hydraulic cylinder (633) extends through and to the bottom of the suspension (632) and is fixedly connected to the dynamic clamp seat (62).

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