Steel-plastic composite pipe end expanding device

Abstract

The utility model relates to the technical field of steel-plastic composite pipes, in particular to a steel-plastic composite pipe end expanding device which comprises a device base, an installation shell is fixed to the upper surface of the device base through bolts, and an expanding mechanism used for expanding a composite pipe is installed at the upper end of the installation shell. An adjusting mechanism used for adjusting the expansion mechanism is installed in the installation shell, and a clamping mechanism used for limiting the composite pipe is installed on the left side of the device base. And the expansion mechanism comprises a driving motor, and the driving motor is fixed to the upper end of the mounting shell through a bolt. According to the expansion device for the steel-plastic composite pipe, the installation pipe can be driven to rotate through the arranged expansion mechanism, the auxiliary rod can rotate through the bearing between the auxiliary rod and the expansion plate, so that the steel-plastic composite pipe is expanded, the high-pressure gas can push the movable rod to move, the expansion plate is made to move outwards, and therefore the expansion size of the steel-plastic composite pipe is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of steel-plastic composite pipes, in particular to an end expansion device for steel-plastic composite pipes. Background Technique

[0002] Steel-plastic composite is a pipeline material composed of steel pipes and plastic pipes through a specific process. It combines the advantages of both steel pipes and plastic pipes. It not only has the strength and pressure resistance of steel pipes but also the corrosion resistance of plastic pipes. The end expansion device for steel-plastic composite pipes is a device used to process the ends of steel-plastic composite pipes, and its main function is to expand the diameter of steel-plastic composite pipes to facilitate connection, installation, or other process operations.

[0003] When the existing steel-plastic composite pipes are expanded at the ends, the steel-plastic pipes need to be fixed. However, since the fixed structure used does not have a small buffer, it is easy to cause breakage and damage when the ends of the steel-plastic pipes are expanded.

[0004] The existing patent (publication number: CN219402001U) discloses an end expansion device for steel-plastic composite pipes, which includes a base. Through the expansion disc structure, it is beneficial to expand steel-plastic composite pipes with different diameters. With the cooperation of a spring and a buffer damper, when the steel-plastic composite pipes are expanded at the ends, it plays a buffering effect to avoid excessive pressure and impact and reduce losses.

[0005] Regarding the above problems, although the solution given by the existing patent is beneficial to expand steel-plastic composite pipes with different diameters through the expansion disc structure, it cannot guarantee the smoothness during expansion, resulting in uneven expansion of the inner wall of the steel-plastic composite pipe, making the inner wall uneven and affecting subsequent use. Summary of the Invention

[0006] The purpose of the utility model is to provide an end expansion device for steel-plastic composite pipes, which can drive the installation pipe to rotate. Through the bearing between the auxiliary rod and the expansion plate, the auxiliary rod can rotate, so as to expand the steel-plastic composite pipe. Moreover, high-pressure gas can push the movable rod to move, so that the expansion plate moves outward, thereby adjusting the expansion size of the steel-plastic composite pipe to solve the problems put forward in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: An end expansion device for steel-plastic composite pipes includes a device base. The upper surface of the device base is fixed with an installation shell through bolts. The upper end of the installation shell is provided with an expansion mechanism for expanding the composite pipe. The inside of the installation shell is provided with an adjustment mechanism for adjusting the expansion mechanism. The left side of the device base is provided with a clamping mechanism for limiting the composite pipe.

[0008] The expansion mechanism includes a driving motor, which is fixed to the upper end of the installation shell by bolts. A driving wheel is fixed to the power output shaft of the driving motor. A belt is connected to the outer wall of the driving wheel. A driven wheel is connected to one side of the belt. A transmission rod passing through the inner wall of the installation shell is fixed inside the driven wheel. A connecting pipe is fixed to the end of the transmission rod. An installation pipe is communicated with the end of the connecting pipe. A fixed pipe is communicated with the end of the installation pipe. A movable rod is telescopically connected to the end of the fixed pipe. An expansion plate is fixed to the end of the movable rod. An auxiliary rod is rotatably connected to the inside of the expansion plate through a bearing.

[0009] Preferably, a fixed bearing fixedly connected to the installation shell is sleeved on the outer surface of the installation pipe.

[0010] Preferably, the adjustment mechanism includes an air delivery pump, which is fixed inside the installation shell by bolts. A connecting piece is communicated with the output end of the air delivery pump.

[0011] Preferably, a sealing ring sleeved on the connecting pipe is fixed to the inner wall of the connecting piece, and through holes are formed on the outer surface of the connecting pipe.

[0012] Preferably, the clamping mechanism includes a clamping piece, which is fixed to the left side of the device base. A clamping electric cylinder is fixed to the upper surface of the clamping piece by bolts.

[0013] Preferably, a movable plate is fixed to the telescopic end of the clamping electric cylinder through the clamping piece.

[0014] Preferably, a fixing plate is fixed to the lower end inside the clamping piece, and the fixing plate has a semi-circular structure.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. Through the provided expansion mechanism, the installation pipe can be driven to rotate. Through the bearing between the auxiliary rod and the expansion plate, the auxiliary rod can rotate, thereby expanding the steel-plastic composite pipe. Moreover, high-pressure gas can push the movable rod to move, so that the expansion plate moves outward, thereby adjusting the expansion size of the steel-plastic composite pipe.

[0017] 2. Through the provided clamping mechanism, the clamping electric cylinder drives the movable plate to move vertically, thereby clamping and fixing the steel-plastic composite pipe. Moreover, the cylinder fixed to the left side of the device base drives the clamping piece to move horizontally, thereby conveying the steel-plastic composite pipe. Description of the Drawings

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is the overall structural view of the present invention;

[0020] Figure 2 It is a schematic half-sectional structure view of the installation shell of the present invention;

[0021] Figure 3 It is a schematic half-sectional structure view of the connecting member of the present invention;

[0022] Figure 4 It is a three-dimensional structure view of the expansion plate of the present invention.

[0023] Explanation of reference numerals:

[0024] 1, device base; 2, installation shell; 3, drive motor; 31, driving wheel; 32, belt; 33, driven wheel; 34, transmission rod; 35, connecting pipe; 36, installation pipe; 37, fixed pipe; 38, movable rod; 39, expansion plate; 310, auxiliary rod; 4, fixed bearing; 5, air delivery pump; 51, connecting member; 52, sealing ring; 53, through hole; 6, clamping member; 61, clamping electric cylinder; 62, movable plate; 63, fixing plate. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] The present invention provides a technical solution:

[0027] Please refer to Figures 1 to 4 , a steel-plastic composite pipe end expansion device, including a device base 1, an installation shell 2 is fixed on the upper surface of the device base 1 by bolts, an expansion mechanism for expanding the composite pipe is installed at the upper end of the installation shell 2, an adjustment mechanism for adjusting the expansion mechanism is installed inside the installation shell 2, and a clamping mechanism for limiting the composite pipe is installed on the left side of the device base 1;

[0028] The expansion mechanism includes a driving motor 3, which is fixed to the upper end of the mounting shell 2 by bolts. A driving wheel 31 is fixed to the power output shaft of the driving motor 3. A belt 32 is connected to the outer wall of the driving wheel 31. One side of the belt 32 is connected to a driven wheel 33. A transmission rod 34 passing through the inner wall of the mounting shell 2 is fixed inside the driven wheel 33. A connecting pipe 35 is fixed to the end of the transmission rod 34. The end of the connecting pipe 35 communicates with a mounting pipe 36. The end of the mounting pipe 36 communicates with a fixed pipe 37. The end of the fixed pipe 37 is telescopically connected to a movable rod 38. An expansion plate 39 is fixed to the end of the movable rod 38. An auxiliary rod 310 is rotatably connected to the inside of the expansion plate 39 through a bearing. A fixed bearing 4 fixedly connected to the mounting shell 2 is sleeved on the outer surface of the mounting pipe 36. The adjustment mechanism includes an air delivery pump 5, which is fixed inside the mounting shell 2 by bolts. The output end of the air delivery pump 5 communicates with a connecting part 51. A sealing ring 52 sleeved on the connecting pipe 35 is fixed to the inner wall of the connecting part 51. A through hole 53 is formed in the outer surface of the connecting pipe 35.

[0029] By adopting the above technical solution, before using the steel-plastic composite pipe end expansion device, first place the device base 1 in a suitable position. The driving motor 3 provided on the mounting shell 2 can drive the driving wheel 31 to rotate. With the cooperation of the belt 32, the driven wheel 33 can be synchronously driven to rotate, thereby driving the transmission rod 34 to rotate, making the connecting pipe 35 drive the mounting pipe 36 to rotate. An auxiliary rod 310 is provided on the expansion plate 39 at the end of the mounting pipe 36. Since there is a bearing between the auxiliary rod 310 and the expansion plate 39, the auxiliary rod 310 can rotate, thereby expanding the steel-plastic composite pipe. The air delivery pump 5 provided can deliver compressed gas to the connecting part 51. There is a sealing bearing between the connecting part 51 and the connecting pipe 35, which plays a certain sealing role. The provided sealing ring 52 further improves the sealing effect and reduces the occurrence of gas leakage. The gas enters the inside of the connecting pipe 35 through the through hole 53 and is discharged into the fixed pipe 37, so that the high-pressure gas can push the movable rod 38 to move, making the expansion plate 39 move outward, thereby adjusting the expansion size of the steel-plastic composite pipe. The provided fixed bearing 4 can ensure the stability of the mounting pipe 36 during rotation and reduce the occurrence of shaking.

[0030] Specifically, as Figures 1 - 4 shown, the clamping mechanism includes a clamping member 6, which is fixed to the left side of the device base 1. A clamping electric cylinder 61 is fixed to the upper surface of the clamping member 6 by bolts. The telescopic end of the clamping electric cylinder 61 passes through the clamping member 6 and is fixed with a movable plate 62. A fixed plate 63 is fixed to the lower end inside the clamping member 6. The fixed plate 63 is of a semi-circular structure.

[0031] By adopting the above technical solution, the steel-plastic composite pipe to be processed is passed through between the movable plate 62 and the fixed plate 63. The clamping electric cylinder 61 provided on the clamping member 6 can drive the vertical movement of the movable plate 62, so as to clamp and fix the steel-plastic composite pipe. And through the cylinder fixed on the left side of the device base 1, under the action of the two guide rods, it can drive the clamping member 6 to move horizontally, so as to convey the steel-plastic composite pipe, insert the expansion plate 39 into the end of the steel-plastic composite pipe, and make the outer wall of the auxiliary rod 310 contact with the inner wall of the steel-plastic composite pipe.

[0032] Working principle: The steel-plastic composite pipe is passed through between the movable plate 62 and the fixed plate 63. The clamping electric cylinder 61 provided on the clamping member 6 is used to clamp and fix the steel-plastic composite pipe. Through the cylinder fixed on the left side of the device base 1, under the action of the two guide rods, it can drive the clamping member 6 to move horizontally to convey the steel-plastic composite pipe. Through the driving motor 3 provided on the mounting shell 2, it can drive the driving wheel 31 to rotate, thereby driving the transmission rod 34 to rotate, so that the connecting pipe 35 drives the mounting pipe 36 to rotate. And the auxiliary rod 310 is provided on the expansion plate 39 at the end of the mounting pipe 36. Since there is a bearing between the auxiliary rod 310 and the expansion plate 39, the auxiliary rod 310 can rotate, so as to expand the steel-plastic composite pipe. The air delivery pump 5 can deliver compressed gas to the connecting member 51. The gas enters the interior of the connecting pipe 35 through the through hole 53 and is discharged into the fixed pipe 37, so that the high-pressure gas can push the movable rod 38 to move, and the expansion plate 39 moves outward, so as to adjust the expansion size of the steel-plastic composite pipe.

[0033] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steel-plastic composite pipe end expansion device, comprising a device base (1), characterized in that: A mounting shell (2) is fixed to the upper surface of the device base (1) by bolts, an expansion mechanism for expanding the composite pipe is installed at the upper end of the mounting shell (2), an adjustment mechanism for adjusting the expansion mechanism is installed inside the mounting shell (2), and a clamping mechanism for limiting the position of the composite pipe is installed on the left side of the device base (1); The expansion mechanism comprises a driving motor (3), wherein the driving motor (3) is fixed to the upper end of the mounting shell (2) by means of bolts, a driving wheel (31) is fixed to the power output shaft of the driving motor (3), an outer wall of the driving wheel (31) is connected to a belt (32), one side of the belt (32) is connected to a driven wheel (33), a transmission rod (34) penetrating the inner wall of the mounting shell (2) is fixed inside the driven wheel (33), a connecting pipe (35) is fixed to the end of the transmission rod (34), the end of the connecting pipe (35) is connected to the mounting pipe (36), the end of the mounting pipe (36) is connected to the fixing pipe (37), the end of the fixing pipe (37) is telescopically connected to a movable rod (38), an expansion plate (39) is fixed to the end of the movable rod (38), and the inside of the expansion plate (39) is rotatably connected to an auxiliary rod (310) via a bearing.

2. The steel-plastic composite pipe end expansion device according to claim 1, characterized in that: The outer surface of the mounting tube (36) is sleeved with a fixed bearing (4) fixedly connected to the mounting shell (2).

3. The steel-plastic composite pipe end expansion device according to claim 1, characterized in that: The regulating mechanism comprises an air delivery pump (5), the air delivery pump (5) being fixed inside the mounting shell (2) by means of bolts, and the output end of the air delivery pump (5) being connected to a connecting piece (51).

4. The steel-plastic composite pipe end expansion device according to claim 3, characterized in that: A sealing ring (52) sleeved on the connecting pipe (35) is fixed on the inner wall of the connecting piece (51), and a through hole (53) is opened on the outer surface of the connecting pipe (35).

5. The steel-plastic composite pipe end expansion device according to claim 1, characterized in that: The clamping mechanism comprises a clamping member (6), the clamping member (6) is fixed on the left side of the device base (1), and a clamping electric cylinder (61) is fixed to the upper surface of the clamping member (6) by means of bolts.

6. The steel-plastic composite pipe end expansion device according to claim 5, characterized in that: The telescopic end of the clamping electric cylinder (61) passes through the clamping member (6) and is fixed with a movable plate (62).

7. The steel-plastic composite pipe end expansion device according to claim 5, characterized in that: A fixing plate (63) is fixed to the lower end of the clamping member (6), and the fixing plate (63) is a semicircular structure.

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