Pipe bending device for metal pipe

Abstract

The utility model relates to a pipe bending device for a metal pipe, which comprises a frame body, a hydraulic assembly arranged on the frame body and a hold-down clamp connected with the output end of the hydraulic assembly, a positioning assembly is further arranged on the frame body and comprises a driving piece and a plurality of positioning clamps, positioning grooves are formed in the positioning clamps, and the driving piece is arranged on the frame body. A pipe is clamped between the positioning groove and the hold-down device, the hold-down device is used for bending the pipe, the driving piece comprises a positive and negative thread lead screw, and the multiple positioning clamps are arranged on a positive thread part and a negative thread part of the positive and negative thread lead screw respectively. The driving part is used for driving the positioning clamps arranged on the positive and negative tooth lead screws to move close to each other or move away from each other, and the pressing tool comprises a mounting base, a pressing plate arranged on one side of the mounting base and a pressing groove formed in one side of the pressing plate. According to the pipe bending device for the metal pipe, the bending radius can be determined more conveniently and accurately, and pipes with more bending radius requirements can be bent.

Description

Technical Field

[0001] The utility model relates to the field of pipe bending, and specifically relates to a pipe bending device for metal pipes. Background Technique

[0002] The bending of pipes is generally completed by a pipe bending device. The existing pipe bending devices are divided into manual pipe bending devices, semi-automatic pipe bending machines and automatic pipe bending machines. Among them, the semi-automatic pipe bending machine and the automatic pipe bending machine have higher efficiency than the manual pipe bending machine. However, due to the advantages of the manual pipe bending machine such as low price and easy movement, it still has a certain market. The existing manual pipe bending machine generally includes a frame, a driving mechanism, a bending mechanism, a pipe bending die, etc. Among them, the driving mechanism mostly selects a hydraulic mechanism. Two pipe bending wheels are fixedly installed on the pipe bending die. The bending radius of the pipe is determined by the distance between the two pipe bending wheels. The pipe bending wheels cooperate with the bending mechanism to clamp the pipe, and the bending mechanism applies a thrust to the pipe to complete the bending of the pipe.

[0003] In the prior art, the method of changing the distance between the pipe bending wheels is as follows: a number of fixing holes are provided on the frame. The number of fixing holes is divided into two groups, and the two groups of fixing holes are symmetrically arranged on the frame. The two pipe bending wheels are respectively connected to the two symmetrical fixing holes by means of bolts. This method of changing the bending radius is relatively troublesome. Each time the bending radius of the pipe needs to be changed, two steps of disassembly and installation are required. Moreover, the number of fixing holes that can be provided on the frame is certain, which results in a certain range of selection of the bending radius. To solve the above problems, a pipe bending device for metal pipes is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pipe bending device for metal pipes to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A pipe bending device for metal pipes, including a frame body, a hydraulic component arranged on the frame body, and a press tool connected to the output end of the hydraulic component. A positioning component is also arranged on the frame body;

[0007] The positioning component includes a driving member and a number of positioning jigs. A positioning groove is arranged on the positioning jig. The pipe is clamped between the positioning groove and the press tool. The press tool is used to bend the pipe. The driving member includes a positive and negative thread lead screw. A number of the positioning jigs are respectively arranged on the positive thread part and the reverse thread part of the positive and negative thread lead screw. The driving member is used to drive the positioning jigs arranged on the positive and negative thread lead screw to move closer to each other or move away from each other.

[0008] Further, the pressing tool includes a mounting base, a pressing plate disposed on one side of the mounting base, and a pressing groove formed on one side of the pressing plate. The mounting base is detachably connected to the hydraulic component, and the pressing plate is horizontally disposed on the side wall of the mounting base.

[0009] Further, the frame body includes a base, a plurality of support columns disposed on the base, and a frame plate disposed on the upper end surface of the support columns.

[0010] Further, a placement groove, a first sliding groove, and a first fixing groove are further formed on the base, and a second sliding groove and a second fixing groove are formed on the frame plate.

[0011] Further, the driving member further includes a mounting plate and a motor. The left and right thread lead screw is disposed above the mounting plate. The output end of the motor is detachably connected to one end of the left and right thread lead screw, and a plurality of nut seats are threadedly connected to the left and right thread lead screw.

[0012] Further, a spring post is disposed on the nut seat, and a fixing member is disposed on the spring post. The fixing member includes a connecting seat, an extension plate disposed on the connecting seat, and a slider disposed at one end of the extension plate. A first fixing hole is formed on the slider, the slider is slidably mounted in the sliding groove, and the first fixing hole is located in the first fixing groove.

[0013] Further, the positioning jig is fixedly mounted on the upper end surface of the connecting seat, and the notch of the positioning groove faces the pressing groove.

[0014] Further, a moving block is disposed at the upper end of the positioning jig. A second fixing hole is formed in the moving block. The moving block is slidably mounted in the second sliding groove, and the second fixing hole is located in the second fixing groove.

[0015] Further, the bending device for the metal pipe further includes a controller, and the motor is controlledly connected to the controller.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: The position of the positioning jig can be automatically adjusted through the provided positioning assembly, which is more convenient, faster, and accurate than the existing adjustment methods on the manual pipe bending device, and can also bend pipes with more bending radius requirements. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a bending device for a metal pipe.

[0018] Figure 2 It is a schematic structural diagram of the positioning assembly of the bending device for a metal pipe.

[0019] Figure 3 It is a top view of the base of the bending device for a metal pipe.

[0020] Figure 4 It is a top view of the frame plate of the pipe bending device for metal pipes.

[0021] Figure 5 It is a structural schematic diagram of the press tool of the pipe bending device for metal pipes.

[0022] In the figure: 1. Frame body; 11. Base; 111. Placing groove; 112. First sliding groove; 113. First fixing groove; 12. Frame plate; 121. Second sliding groove; 122. Second fixing groove; 13. Support pillar; 2. Hydraulic component; 3. Positioning component; 31. Mounting plate; 32. Motor; 33. Nut seat; 34. Spring column; 35. Connecting seat; 36. Positioning clamp; 37. Positioning groove; 38. Moving block; 39. Second fixing hole; 310. Extension plate; 311. Slide block; 312. First fixing hole; 313. Positive and negative thread screw rod; 4. Press tool; 41. Mounting seat; 42. Pressing plate; 43. Pressing groove; 5. Controller. Detailed implementation manners

[0023] The following will describe various exemplary embodiments, features, and aspects of the present application in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0024] The special word "exemplary" here means "serving as an example, embodiment, or illustration". Any embodiment described as "exemplary" here does not have to be construed as superior to or better than other embodiments.

[0025] In addition, for a better description of the present application, numerous specific details are given in the following detailed embodiments. Those skilled in the art should understand that the present application can also be implemented without some specific details. In some instances, methods, means, and elements well known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0026] Embodiment 1, please refer to Figures 1 to 5 As shown in the structure, in the embodiment of the present utility model, a pipe bending device for metal pipes includes a frame body 1, a hydraulic component 2 arranged on the frame body 1, a press tool 4 connected to the output end of the hydraulic component 2, and a positioning component 3 is also arranged on the frame body 1;

[0027] The positioning assembly 3 includes a driving member and a plurality of positioning jigs 36. A positioning groove 37 is provided on the positioning jig 36. The pressing tool 4 cooperates with the positioning groove 37 to clamp the pipe. The pressing tool 4 can also apply pressure to the pipe to bend the pipe. The driving member includes a positive and negative thread screw rod 313. The plurality of positioning jigs 36 are respectively arranged on the positive thread portion and the negative thread portion of the positive and negative thread screw rod 313. The driving member is used to drive the positioning jigs 36 arranged on the positive and negative thread screw rod 313 to move closer to each other or move away from each other.

[0028] Further, the pressing tool 4 includes a mounting seat 41, a pressing plate 42 arranged on one side of the mounting seat 41, and a pressing groove 43 opened on one side of the pressing plate 42. The mounting seat 41 is detachably connected to the hydraulic assembly 2. The pressing plate 42 is horizontally arranged on the side wall of the mounting seat 41.

[0029] In this embodiment, the hydraulic assembly 2 is a manual hydraulic mechanism, which is a common mechanical mechanism and is prior art. Its structure will not be described in detail. The pressing tool 4 is detachably installed at the output end of the hydraulic assembly 2 by means of screw connection. By pressing the handle of the hydraulic assembly 2, a thrust can be applied to the pressing tool 4, so as to apply pressure to the pipe clamped between the pressing tool 4 and the positioning groove 37 to bend the pipe.

[0030] Further, the frame body 1 includes a base 11, a plurality of support columns 13 arranged on the base 11, and a frame plate 12 arranged on the upper end surface of the support columns 13. The frame plate 12 is erected above the base 11 to form a pipe bending area between the base 11 and the frame plate 12.

[0031] In this embodiment, the number of the support columns 13 is four, which are respectively arranged at the four corners of the base 11. The frame plate 12 is threadedly connected to the upper end surface of the support columns 13.

[0032] Further, a placement groove 111, a first sliding groove 112 and a first fixing groove 113 are also opened on the base 11. A second sliding groove 121 and a second fixing groove 122 are opened on the frame plate 12.

[0033] Further, the driving member further includes a mounting plate 31 and a motor 32. The positive and negative thread screw rod 313 is erected above the mounting plate 31. The output end of the motor 32 is detachably connected to one end of the positive and negative thread screw rod 313. The motor 32 and the positive and negative thread screw rod 313 can be connected by means of key connection or pin connection. The motor 32 is used to drive the positive and negative thread screw rod 313 to rotate. A plurality of nut seats 33 are threadedly connected to the positive and negative thread screw rod 313. As the screw rod rotates, the nut seats 33 located on different thread portions of the positive and negative thread screw rod 313 move closer to each other or move away from each other.

[0034] In this embodiment, the number of the nut seats 33 is two. The two nut seats 33 are respectively arranged on the two thread portions, and the distances between the two nut seats 33 and the midpoint of the positive and negative thread screw rod 313 are equal.

[0035] Further, a spring post 34 is provided on the nut seat 33, and a fixing member is provided on the spring post 34. The fixing member includes a connecting seat 35, an extension plate 310 provided on the connecting seat 35, and a slider 311 provided at one end of the extension plate 310. A first fixing hole 312 is provided on the slider 311. The slider 311 is slidably mounted in a first chute 112, and the first fixing hole 312 is located in a first fixing groove 113. When fixing the slider 311, a bolt is screwed into the first fixing hole 312 until the nut of the bolt is in close contact with the base 11 on both sides of the first fixing hole 312. It should be noted that the diameter of the nut needs to be greater than the width of the first fixing groove 113.

[0036] In this embodiment, the mounting plate 31 is screwed and installed in the placement groove 111. The number of the first chutes 112 is two, and the number of the first fixing grooves 113 is four. The two first chutes 112 are respectively arranged on both sides of the placement groove 111. The four first fixing grooves 113 are grouped in pairs, and one group of first fixing grooves 113 is respectively arranged on both sides of one first chute 112. The placement groove 111 communicates with the first chute 112, and the first chute 112 communicates with the first fixing groove 113. The number of the first fixing holes 312 is several, which are evenly divided into two groups. Each group of first fixing holes 312 is located in the corresponding first fixing groove 113. The number of the extension plates 310 and the sliders 311 is both two. The two extension plates 310 are respectively arranged at the front and rear ends of the connecting seat 35. The two sliders 311 are respectively installed at one end of the two extension plates 310. The two sliders 311 are respectively slidably mounted in the first chutes 112 on the same side, and the first fixing holes 312 thereon are also respectively located in the first fixing grooves 113 on the same side.

[0037] Further, the positioning fixture 36 is fixedly installed on the upper end surface of the connecting seat 35, and the notch of the positioning groove 37 faces the pressing groove 43.

[0038] Further, a moving block 38 is provided at the upper end of the positioning fixture 36. A second fixing hole 39 is formed in the moving block 38. The moving block 38 is slidably mounted in a second chute 121, and the second fixing hole 39 is located in a second fixing groove 122.

[0039] In this embodiment, the number of the second fixing grooves 122 is two. The two second fixing grooves 122 are respectively arranged on both sides of the second chute 121. The second fixing groove 122 communicates with the second chute 121. When fixing the moving block 38, a bolt is screwed into the second fixing hole 39 until the nut of the bolt is in close contact with the support plates 12 on both sides of the second fixing groove 122. It should be noted that the diameter of the nut needs to be greater than the width of the second fixing groove 122.

[0040] It should be noted that the connecting seat 35 is fixed on the base 11 and the frame plate 12 respectively through the first fixing hole 312 and the second fixing hole 39. Also, since the positioning fixture 36 and the nut seat 33 are elastically connected through the spring post 34, when the positioning fixture 36 is subjected to pressure or thrust, the main components bearing these forces are the slider 311 and the bolt, which can prevent the nut seat 33 or the double-threaded screw 313 from being damaged or deformed due to the applied force.

[0041] Furthermore, the bending device for the metal pipe further includes a controller 5, and the motor 32 is controlledly connected to the controller 5.

[0042] In this embodiment, the controller 5 can be selected as an integrated circuit board, which includes a microprocessor, an input / output interface, and a communication interface. On the motor 32, there are a motor driver, a sensor, an encoder, and a communication interface. Among them, the microprocessor, the input / output interface, the communication interface, the motor driver, the sensor, and the encoder are all prior arts and will not be elaborated here. The controller 5 can control the opening and closing, rotation speed, etc. of the motor 32 in real time.

[0043] When bending the pipe, according to the required bending radius, determine the positions of the two positioning fixtures 36, input data into the controller 5, start the motor 32 through the controller 5, drive the two nut seats 33 to move closer to each other or move away from each other. When the two nut seats 33 move to the required positions, the controller 5 shuts down the motor 32. At this time, the two positioning fixtures 36 are in the required positions. Since the slider 311 and the moving block 38 are connected to the positioning fixture 36, as the nut seat 33 moves, the slider 311 and the moving block 38 move in the first chute 112 and the second chute 121 respectively. Correspondingly, the first fixing hole 312 and the second fixing hole 39 move inside the first fixing groove 113 and the second fixing groove 122 respectively. When the positioning fixture 36 moves into place, screw several bolts into the first fixing hole 312 and the second fixing hole 39 respectively until the bolts are in close contact with the corresponding base 11 or frame plate 12, so that the connecting seat 35 is fixed at this position. Press the pressing rod of the hydraulic component 2 to make the pressing groove 43 gradually approach the positioning component 3. When they are in a suitable relative position, place the pipe on the positioning groove 37, continue to press the pressing rod to make the pressing groove 43 contact the pipe, clamp the pipe through the pressing groove 43 and the positioning groove 37, and then continue to press the pressing rod to apply pressure to the pipe until the pipe is bent to the required radian.

[0044] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0045] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pipe bending device for a metal pipe, characterized in that: It comprises a frame, a hydraulic assembly arranged on the frame, and a pressing tool connected to the output end of the hydraulic assembly, and a positioning assembly is also arranged on the frame; The positioning assembly includes a driving member and a plurality of positioning fixtures, the positioning fixture is provided with a positioning groove, the pipe is clamped between the positioning groove and the press, the press is used to bend the pipe, the driving member includes a positive and negative threaded rod, and the plurality of positioning fixtures are separately arranged on the positive threaded part and the negative threaded part of the positive and negative threaded rod, and the driving member is used to drive the positioning fixtures separately arranged on the positive and negative threaded rods to move towards each other or away from each other.

2. A pipe bending device for metal pipes according to claim 1, characterized in that: The pressing tool comprises a mounting seat, a pressing plate arranged on one side of the mounting seat and a pressing groove opened on one side of the pressing plate. The mounting seat is detachably connected to the hydraulic assembly, and the pressing plate is horizontally arranged on the side wall of the mounting seat.

3. A pipe bending device for metal pipes according to claim 2, characterized in that: The frame body comprises a base, a plurality of pillars arranged on the base and a frame plate arranged on the upper end surfaces of the pillars.

4. A pipe bending device for metal pipes according to claim 3, characterized in that: The base is also provided with a placement slot, a first slide slot and a first fixing slot, and the frame plate is provided with a second slide slot and a second fixing slot.

5. A pipe bending device for metal pipes according to claim 4, characterized in that: The driving member also includes a mounting plate and a motor. The forward and reverse screw rods are mounted above the mounting plate. The output end of the motor is detachably connected to one end of the forward and reverse screw rods. The forward and reverse screw rods are threadedly connected with a plurality of nut seats.

6. A pipe bending device for metal pipes according to claim 5, characterized in that: A spring column is arranged on the nut seat, a fixing piece is arranged on the spring column, the fixing piece comprises a connecting seat, an extension plate arranged on the connecting seat and a slider arranged at one end of the extension plate, a fixing hole 1 is arranged on the slider, the slider is slidably installed in the slide groove, and the fixing hole 1 is located in the fixing groove 1.

7. A pipe bending device for metal pipes according to claim 6, characterized in that: The positioning fixture is fixedly mounted on the upper end surface of the connecting seat, and the notch of the positioning groove faces the pressing groove.

8. A pipe bending device for metal pipes according to claim 7, characterized in that: A moving block is arranged at the upper end of the positioning fixture, a second fixing hole is opened in the moving block, the moving block is slidably installed in the second sliding groove, and the second fixing hole is located in the second fixing groove.

9. A pipe bending device for metal pipes according to claim 8, characterized in that: The metal pipe bending device also includes a controller, and the motor is control-connected to the controller.

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