Portable small-pipe-diameter pipe bending device

Abstract

The utility model discloses a portable small pipe diameter pipe bending device which comprises a fixing groove, a rolling guide groove and a lever, the lever controls the rolling guide groove to rotate around the fixing groove so as to bend a pipe body located between the fixing groove and the rolling guide groove, and the portable small pipe diameter pipe bending device further comprises a pipe body fixing mechanism used for pressing the pipe body on the fixing groove in an abutting mode. According to the utility model, the fixing mechanism for fixing the pipe body is arranged on the fixing groove, so that the pipe body is not easy to deviate in the bending process. The pipe body penetrates through the space between the lower portion of the screw hole and the fixing groove, then the jacking and pressing bolt is rotated, the end of the jacking and pressing bolt jacks and presses the pipe body on the fixing groove to be fixed, and therefore the pipe body is prevented from deviating. By means of the ejector rod inclined relative to the pipe body, the pipe body cannot move upwards and forwards relative to the fixing groove due to the ejection force and friction force between the ejection head at the end of the ejector rod and the pipe body, and therefore the pipe body is fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe bending tools, in particular to a portable small-diameter pipe bending device. Background Art

[0002] During construction, bent pipes are often embedded in concrete or used as connectors. Direct manual bending of the pipes cannot ensure that the inner and outer wall thicknesses of the bent parts meet the requirements, while the use of machinery can easily cause small-diameter steel pipes to be subjected to large impact forces, resulting in deformation or even cut-off. Traditional manual pipe bender is too simple, with only one guide groove. The specific method is to place the steel pipe on the ground and use the pipe bender to bend it upward. The steel pipe has no fixed measures on the ground. If the worker uses incorrect force during operation, the steel pipe is easily deflected. Utility Model Content

[0003] In order to solve the problem that steel pipes are easily deflected during bending, the utility model proposes a portable small-diameter pipe bending device. By arranging a fixing mechanism for fixing the pipe body on the fixing groove, the pipe body is not easily deflected during the bending process.

[0004] The technical solution adopted by the present invention is to design a portable small-diameter pipe bending device, which includes a fixed groove, a rolling guide groove, and a lever. The lever controls the rolling guide groove to rotate around the fixed groove, thereby bending the pipe body located between the fixed groove and the rolling guide groove. The utility model also includes a pipe body fixing mechanism for pressing the pipe body against the fixed groove.

[0005] In some embodiments, a base is further included, the fixing groove is fixed on the base, the rolling guide groove is provided on the roller, the roller is rotatably connected to the lever, and one end of the lever is rotatably connected to the base.

[0006] In some embodiments, the fixing groove is a semicircular arc groove, and the arc groove is vertically arranged on the base.

[0007] In certain embodiments, the tube body fixing mechanism includes a bracket fixed relative to the fixing slot, the bracket is provided with a screw hole, and the internal thread of the screw hole is matched with a pressing bolt that is telescopic relative to the fixing slot.

[0008] In some embodiments, the tube body fixing mechanism includes a bracket fixed relative to the fixing groove, a push rod is provided on the bracket, the two ends of the push rod are respectively a first end and a second end, the first end and the second end are rotatably connected to the bracket via a hinge shaft, a return spring is provided between the push rod and the bracket, a pressing head is provided on the first end of the push rod, the direction of the first end relative to the fixing groove is opposite to the rolling direction of the rolling guide groove, a hook is provided on the second end, and a clamping head corresponding to the hook is provided on the base, when the hook is hooked on the clamping head, the pressing head is away from the fixing groove, and when the hook is separated from the clamping head, the return spring makes the pressing head approach the fixing groove.

[0009] In some embodiments, the hook end is rotatably connected to the push rod.

[0010] In some embodiments, a guide wheel is provided on the bracket, and the tube body passes between the guide wheel and the fixing groove.

[0011] In some embodiments, the guide wheel is rotatably disposed on the hinge shaft.

[0012] In some embodiments, the guide wheel is rotated by a motor.

[0013] In certain embodiments, the ram includes a rubber layer disposed on the first end.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides a fixing mechanism for the tube body in the fixing groove, thereby preventing the tube body from shifting during bending. The tube body passes between the bottom of the screw hole and the fixing groove, and then the pressing bolt is rotated so that the end of the pressing bolt presses the tube body against the fixing groove, thereby preventing the tube body from shifting. A push rod is tilted relative to the tube body, and the pressing pressure and friction between the pressing head at the end of the push rod and the tube body prevent the tube body from moving upward and forward relative to the fixing groove, thereby achieving fixation of the tube body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is described in detail below with reference to specific embodiments and accompanying drawings. To illustrate details and facilitate understanding of its principles, the drawings are not necessarily drawn to scale, and similar reference numerals may describe similar components in different views. The accompanying drawings generally illustrate the embodiments discussed herein by way of example and not limitation. Among them:

[0017] Figure 1 This is a schematic diagram of the pipe bending device of Example 1 after the lever is lifted.

[0018] Figure 2 This is a schematic diagram of the pipe bending device of Example 1 after the lever is raised and lowered to bend the pipe body.

[0019] Figure 3 This is a schematic diagram of the push head of the push rod leaving the tube body in Example 2.

[0020] Figure 4 yes Figure 3 Enlarged schematic diagram of point A in the middle.

[0021] Figure 5 It is a schematic diagram of the pressing head of the ejector pin of the second embodiment pressing on the tube body.

[0022] Figure 6 yes Figure 5 Enlarged schematic diagram of point B in the middle.

[0023] In the figure, 1. fixing groove; 2. rolling guide groove; 3. lever; 4. tube body; 5. base; 6. bracket; 7. screw hole; 8. pressure bolt; 9. roller; 10. push rod; 11. first end; 12. second end; 13. hinge shaft; 14. return spring; 15. hook; 16. clamping head; 17. pressure head; 18. guide wheel. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments, and the following embodiments do not limit the utility model involved in the claims. In addition, not all combinations of features described in the embodiments are necessarily required for the solution of the utility model.

[0025] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0026] Example 1

[0027] like Figure 1 、 2 As shown, a portable small-diameter pipe bending device includes a fixed groove 1, a rolling guide groove 2, and a lever 3. The lever 3 controls the rolling guide groove 2 to rotate around the fixed groove 1, thereby bending the pipe body 4 located between the fixed groove 1 and the rolling guide groove 2. The device also includes a pipe body 4 fixing mechanism for pressing the pipe body 4 against the fixed groove 1. Before the pipe body 4 is bent, the pipe body 4 fixing mechanism is used to press the pipe body 4 against the fixed groove 1, so that the pipe body 4 will not move relative to the fixed groove 1.

[0028] It also includes a base 5, the fixed groove 1 is a semicircular arc groove, the fixed groove 1 is vertically fixed on the base 5, the rolling guide groove 2 is arranged on the roller 9, and the rolling guide groove 2 is arranged on the circumference corresponding to the roller 9 and the fixed groove 1. The roller 9 is rotatably connected to the lever 3, and one end of the lever 3 is rotatably connected to the base 5. The connection position is located at the center of the arc groove, and the other end of the lever 3 serves as a strength handle.

[0029] The fixing mechanism of the tube body 4 includes a bracket 6 fixed relative to the fixing groove 1. The bracket 6 of this embodiment is fixed to the upper end of the base 5. A screw hole 7 is provided on the bracket 6. The internal thread of the screw hole 7 is matched with a pressing bolt 8 that is telescopic relative to the fixing groove 1.

[0030] When in use, first lift the lever 3 by the handle of the lever 3 so that the lever 3 stands upright, so that the tube roller 9 is above the fixing groove 1 in the vertical direction, and then pass the tube body 4 to be bent from below the screw hole 7 and between the fixing groove 1, and then rotate the pressing bolt 8 so that the end of the pressing bolt 8 presses the tube body 4 on the fixing groove 1 and fixes it, and then press the lever 3 downward to make the roller 9 roll downward along the fixing window groove to bend the tube body 4 along the fixing groove 1.

[0031] Example 2

[0032] like Figure 3 、 4 , 5, and 6, different from the above-mentioned embodiment, the fixing mechanism of the tube body 4 includes a bracket 6 fixed relative to the fixing groove 1, and a push rod 10 is provided on the bracket 6. The two ends of the push rod 10 are respectively a first end 11 and a second end 12, and the first end 11 and the second end 12 are rotatably connected to the bracket 6 through a hinge shaft 13, so that the push rod 10 can rotate freely around the hinge shaft 13, and a return spring 14 is provided between the push rod 10 and the bracket 6, and a push head 17 is provided on the first end 11 of the push rod 10, and the direction of the first end 11 relative to the fixing groove 1 is opposite to the rolling direction of the rolling guide groove 2.

[0033] The second end 12 is provided with a hook 15, and the base 5 is provided with a clamping head 16 corresponding to the hook 15. When the hook 15 is hooked on the clamping head 16, the pressing head 17 moves away from the fixing groove 1. When the hook 15 is separated from the clamping head 16, the return spring 14 causes the pressing head 17 to move closer to the fixing groove 1. The end of the hook 15 is rotatably connected to the push rod 10.

[0034] When the roller 9 rolls the tube body 4 along the fixed groove 1, it exerts an upward and forward force on the tube body 4. Since the direction of the first end 11 is opposite to the rolling direction of the rolling guide groove 2, when the pressing head 17 presses downward on the tube body 4, there is a pressing force and friction between the pressing head 17 at the end of the push rod 10 and the tube body 4. The pressing force and friction prevent the tube body 4 from moving upward and forward relative to the fixed groove 1, thereby fixing the tube body 4.

[0035] When the pipe is bent, the second end 12 of the push rod 10 is rotated downward so that the hook 15 is hooked on the hook head, thereby making the pressing head 17 leave the pipe body 4, and the pipe body 4 can be easily removed or the next pipe body 4 can be inserted.

[0036] The ram 17 includes a rubber layer disposed on the first end 11 to increase friction.

[0037] The bracket 6 is provided with a guide wheel 18. The tube body 4 passes between the guide wheel 18 and the fixing slot 1 to provide guidance for the tube body 4 and prevent the tube body 4 from moving upward. Furthermore, the guide wheel 18 is rotatably disposed on the hinge shaft 13. The guide wheel 18 can be a driving wheel controlled by a motor or other device, thereby actively driving the tube body 4 to move forward and backward along the fixing slot 1 by utilizing the contact friction between the guide wheel 18 and the tube body 4.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A portable small-diameter pipe bending device, comprising a fixed groove, a rolling guide groove, and a lever, wherein the lever controls the rolling guide groove to rotate around the fixed groove, thereby bending the pipe body located between the fixed groove and the rolling guide groove, characterized in that: It also includes a tube fixing mechanism for pressing the tube onto the fixing groove.

2. The portable small diameter pipe bending device according to claim 1, characterized in that: It also includes a base, the fixing groove is fixed on the base, the rolling guide groove is arranged on the roller, the roller is rotatably connected to the lever, and one end of the lever is rotatably connected to the base.

3. The portable small diameter pipe bending device according to claim 2, characterized in that: The fixing groove is a semicircular arc groove, and the arc groove is vertically arranged on the base.

4. The portable small diameter pipe bending device according to claim 2, characterized in that: The tube body fixing mechanism includes a bracket fixed relative to the fixing groove, the bracket is provided with a screw hole, and the internal thread of the screw hole is matched with a pressing bolt that is telescopic relative to the fixing groove.

5. The portable small diameter pipe bending device according to claim 2, characterized in that: The tube body fixing mechanism includes a bracket fixed relative to the fixing groove, and the bracket is provided with a push rod, two ends of the push rod are respectively connected to the first end and the second end, the first end and the second end are rotatably connected to the bracket via a hinge shaft, a return spring is provided between the push rod and the bracket, a pressing head is provided on the first end of the push rod, the direction of the first end relative to the fixing groove is opposite to the rolling direction of the rolling guide groove, a hook is provided on the second end, and a clamping head corresponding to the hook is provided on the base, when the hook is hooked on the clamping head, the pressing head is away from the fixing groove, and when the hook is separated from the clamping head, the return spring makes the pressing head close to the fixing groove.

6. The portable small diameter pipe bending device according to claim 5, characterized in that: The end of the hook is rotatably connected to the push rod.

7. The portable small diameter pipe bending device according to claim 5, characterized in that: The bracket is provided with a guide wheel, and the tube body passes through between the guide wheel and the fixing groove.

8. The portable small diameter pipe bending device according to claim 7, characterized in that: The guide wheel is rotatably arranged on the hinge shaft.

9. The portable small diameter pipe bending device according to claim 8, characterized in that: The guide wheel is controlled to rotate by a motor.

10. The portable small diameter pipe bending device according to claim 5, characterized in that: The ram includes a rubber layer disposed on a first end.

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