Pipe bending assembly and pipe bending machine

Abstract

The invention provides a pipe bending assembly and a pipe bending machine, relates to the technical field of pipe bending machines, and solves the technical problem of low production efficiency caused by collision between a bending die and a bent pipe in the returning process after bending in the prior art. The pipe bending assembly and the pipe bending machine comprise a clamping assembly used for clamping a liquid inlet pipe; the bending assembly comprises a bending die, a bending die moving assembly and a bent pipe driving assembly, the bending die is connected with the bending die moving assembly, and the bending die moving assembly drives the bending die to move in a reciprocating mode so that the bending die can be close to or away from the liquid inlet pipe; the bending die moving assembly is arranged on the pipe bending driving assembly, and the pipe bending driving assembly drives the bending die moving assembly and the bending die to rotate by a preset angle so as to bend the liquid inlet pipe. According to the pipe bending assembly and the pipe bending machine, it is effectively guaranteed that the production progress is conducted normally, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe bending machines, and in particular to a pipe bending assembly and a pipe bending machine. Background Art

[0002] When the liquid inlet pipe bending and sleeve integrated machine of air-conditioning parts assembly production equipment produces liquid inlet pipes, an abnormal pipe bending phenomenon will occur from time to time. The bent parts of the bent pipes will have scratches of varying degrees or serious pipe pinching will occur directly. The process requirements for liquid inlet pipes with too serious scratches do not allow their use. The pipe pinching phenomenon will cause the liquid inlet pipe bending and sleeve integrated machine to get stuck and stop directly, which has a very serious impact on production.

[0003] Based on the above phenomenon, the cause of the abnormal liquid inlet pipe production process was analyzed by observing the on-site production. It was found that the scratches and compression on the liquid inlet pipe were caused by the friction between the bending die and the bent pipe during the retraction process after bending. When these frictions are relatively minor, they will cause scratches on the liquid inlet pipe, resulting in a decrease in the yield rate; when the frictions are more serious, it will cause the liquid inlet pipe to be clamped, and the equipment will directly get stuck and stop to alarm, which will seriously affect the production progress and reduce production efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a pipe bending assembly and a pipe bending machine to solve the technical problem in the prior art that the bending die rubs against the bent pipe during the retraction process after bending, resulting in low production efficiency. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The elbow assembly provided by the present invention comprises:

[0007] A clamping assembly, used for clamping the liquid inlet pipe;

[0008] The bending assembly comprises a bending die, a bending die moving assembly and a bending pipe driving assembly, wherein the bending die is connected to the bending die moving assembly, and the bending die moving assembly drives the bending die to move back and forth so as to make the bending die approach or move away from the liquid inlet pipe;

[0009] The bending die moving assembly is arranged on the bending tube driving assembly, and the bending tube driving assembly drives the bending die moving assembly and the bending die to rotate at a preset angle to bend the liquid inlet tube.

[0010] As an optional embodiment, it further comprises a positioning assembly, wherein the positioning assembly is arranged on the tube bending drive assembly, and the bending die is arranged between the clamping assembly and the positioning assembly;

[0011] The positioning assembly comprises a positioning drive assembly and a positioning jaw, wherein the positioning jaw is connected to the positioning drive assembly, and the positioning drive assembly is used to drive the positioning jaw to clamp or release.

[0012] As an optional embodiment, the positioning clamp includes a first clamp and a second clamp, the first clamp is arranged on the first end of the first swing arm, and the second clamp is arranged on the first end of the second swing arm;

[0013] The middle parts of the first swing arm and the second swing arm are both rotatably arranged on the fixing frame, and the second end of the first swing arm and the second end of the second swing arm are both connected to the positioning drive assembly.

[0014] As an optional embodiment, the bending tube drive assembly includes a bending tube drive motor and a bending tube swing arm, the bending tube swing arm is a U-shaped structure, the two free ends of the bending tube swing arm are rotatably set on a bearing seat, and the bending tube drive motor is transmission-connected to the bending tube swing arm.

[0015] As an optional embodiment, the bending die moving assembly includes a bending die driving cylinder and a guide rod, the guide rod is arranged on the bending tube swing arm, a guide hole is arranged on the bending die, the guide rod cooperates with the guide hole, and the bending die driving cylinder is connected to the bending die to drive the bending die to move along the guide rod.

[0016] As an optional embodiment, it also includes a guide plate, which is arranged on both sides of the bending die to form a guide track for the bending die to move.

[0017] As an optional embodiment, the clamping assembly includes a clamping module and a clamping drive assembly, the clamping module includes a first clamping module and a second clamping module, the second clamping module is connected to the clamping drive assembly, and the clamping drive assembly drives the second clamping module to move closer to or away from the first clamping module to clamp or release the liquid inlet tube.

[0018] As an optional implementation, a curved transition portion is provided at the end of the second clamping module.

[0019] As an optional embodiment, the clamping module is provided with at least two groups, and at least two groups of the second clamping module are connected to the clamping drive assembly;

[0020] The bending dies and bending die moving components are provided in at least two groups, and the at least two groups of the bending dies and bending die moving components are respectively provided corresponding to the at least two groups of the clamping die groups.

[0021] A pipe bending machine comprises the pipe bending assembly as described above.

[0022] The beneficial effects of the present invention are as follows: the pipe bending assembly and pipe bending machine provided by the present invention include a clamping assembly and a bending assembly, the clamping assembly is used to clamp the liquid inlet pipe; the bending assembly is used to bend the liquid inlet pipe, wherein the bending assembly includes a bending die, a bending die moving assembly and a pipe bending drive assembly, the pipe bending drive assembly can drive the bending die moving assembly and the bending die to rotate a preset angle, thereby bending the liquid inlet pipe, the bending die moving assembly is used to drive the bending die to move back and forth so that the bending die approaches or moves away from the liquid inlet pipe, when the liquid inlet pipe is bent, the bending die moving assembly drives the bending die to move back and forth away from the liquid inlet pipe, and the pipe bending drive assembly then drives the bending die moving assembly and the bending die to reverse and reset, thereby effectively preventing the bending die from contacting the liquid inlet pipe, solving the problem of scratches on the liquid inlet pipe and causing equipment shutdown, effectively ensuring the normal production progress, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a three-dimensional diagram (I) of the present invention;

[0025] Figure 2 It is a three-dimensional diagram (two) of the present invention;

[0026] Figure 3 It is a partial structural schematic diagram of the present invention (I);

[0027] Figure 4 It is a partial structural schematic diagram of the present invention (II);

[0028] Figure 5 It is a schematic diagram of the partial structure of A of the present invention;

[0029] Figure 6 It is a schematic diagram of the partial structure of B of the present invention;

[0030] Figure 7 It is a schematic diagram of the partial structure of C of the present invention;

[0031] Figure 8 It is a stereogram of the present invention flipped 90°;

[0032] Fig. 9 It is a schematic diagram of a part of the structure of the present invention flipped 90°.

[0033] In the figure:

[0034] 100, clamping assembly; 110, first clamping module; 120, second clamping module; 130, clamping drive assembly; 140, bending transition portion;

[0035] 200, bending assembly; 210, bending die; 220, bending die moving assembly; 230, bending tube drive assembly; 240, bending tube drive motor; 250, bending tube swing arm; 260, bearing seat; 270, bending die drive cylinder; 280, guide rod; 290, guide hole; 211, guide plate;

[0036] 300, positioning assembly; 310, positioning drive assembly; 320, positioning jaw; 330, first jaw; 340, second jaw; 350, first swing arm; 360, second swing arm; 370, fixing frame;

[0037] 400. Liquid inlet pipe. DETAILED DESCRIPTION

[0038] Please refer to the attached figure below Figures 1 to 9 And the text content understands the content of the present invention and the difference between the present invention and the prior art. The following is a further detailed description of the technical solution (including the preferred technical solution) of the present invention by means of the accompanying drawings and the enumeration of some optional embodiments of the present invention. It should be noted that: any technical feature and any technical solution in the present embodiment are one or more of a variety of optional technical features or optional technical solutions. In order to describe the need for brevity, it is impossible to exhaustively list all the alternative technical features and alternative technical solutions of the present invention in this document, and it is not convenient for the implementation of each technical feature to emphasize that it is one of the multiple optional implementations, so those skilled in the art should know that: any technical means provided by the present invention can be replaced or any two or more technical means or technical features provided by the present invention can be combined with each other to obtain a new technical solution. Any technical feature and any technical solution in the present embodiment do not limit the scope of protection of the present invention. The scope of protection of the present invention should include any alternative technical solutions that can be thought of by those skilled in the art without creative work and new technical solutions obtained by combining any two or more technical means or technical features provided by the present invention.

[0039] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0041] The present invention provides a pipe bending assembly and a pipe bending machine which can effectively ensure the normal progress of production and improve production efficiency.

[0042] Combine the following Figures 1 to 9 The technical solution provided by the present invention is described in more detail.

[0043] The present invention provides a pipe bending assembly, comprising:

[0044] A clamping assembly 100, used to clamp a liquid inlet pipe 400;

[0045] The bending assembly 200 includes a bending die 210, a bending die moving assembly 220 and a bending tube driving assembly 230. The bending die 210 is connected to the bending die moving assembly 220. The bending die moving assembly 220 drives the bending die 210 to move back and forth so that the bending die 210 is close to or away from the liquid inlet pipe 400.

[0046] The bending die moving assembly 220 is disposed on the bending tube driving assembly 230 , and the bending tube driving assembly 230 drives the bending die moving assembly 220 and the bending die 210 to rotate at a preset angle to bend the liquid inlet pipe 400 .

[0047] The pipe bending assembly provided by the present invention includes a clamping assembly 100 and a bending assembly 200, wherein the clamping assembly 100 is used to clamp a liquid inlet pipe 400; the bending assembly 200 is used to bend the liquid inlet pipe 400, wherein the bending assembly 200 includes a bending die 210, a bending die moving assembly 220 and a pipe bending driving assembly 230, the pipe bending driving assembly 230 can drive the bending die moving assembly 220 and the bending die 210 to rotate a preset angle, thereby bending the liquid inlet pipe 400, and the bending die moving assembly 220 is used to drive the bending die 210 to reciprocate. The bending die 210 moves to move closer to or away from the liquid inlet pipe 400. When the liquid inlet pipe 400 is bent, the bending die moving assembly 220 drives the bending die 210 to move back and forth away from the liquid inlet pipe 400. The bending pipe driving assembly 230 then drives the bending die moving assembly 220 and the bending die 210 to reverse and reset, thereby effectively preventing the bending die 210 from contacting the liquid inlet pipe 400, solving the problem of scratches on the liquid inlet pipe 400 and causing equipment shutdown, effectively ensuring the normal production progress and improving production efficiency.

[0048] It can be understood that the bending die 210 is provided with a bending die groove adapted to the liquid inlet pipe 400, and the bending die moving assembly 220 is used to drive the bending die 210 to move back and forth so that the liquid inlet pipe 400 enters the bending die groove on the bending die 210, thereby ensuring that when the bending tube driving assembly 230 drives the bending die moving assembly 220 and the bending die 210 to rotate, the liquid inlet pipe 400 can rotate along a preset direction.

[0049] In some embodiments of the present invention, a positioning assembly 300 is further included, wherein the positioning assembly 300 is disposed on the tube bending drive assembly 230, and the bending die 210 is disposed between the clamping assembly 100 and the positioning assembly 300;

[0050] The positioning assembly 300 includes a positioning drive assembly 310 and a positioning jaw 320 . The positioning jaw 320 is connected to the positioning drive assembly 310 . The positioning drive assembly 310 is used to drive the positioning jaw 320 to clamp or release.

[0051] In some of the above-mentioned embodiments of the present invention, the bending tube assembly also includes a positioning assembly 300, and the positioning assembly 300 is arranged on the bending tube driving assembly 230. When the bending tube driving assembly 230 drives the bending die moving assembly 220 and the bending die 210 to rotate, the positioning assembly 300 follows and rotates simultaneously. The bending die 210 is arranged between the clamping assembly 100 and the positioning assembly 300. After the clamping assembly 100 clamps the liquid inlet pipe 400, the positioning assembly 300 is used to fix the section to be bent of the liquid inlet pipe 400, so that the bending die moving assembly 220 drives the bending die 210 to move back and forth to approach the liquid inlet pipe 400, thereby avoiding the collision of the bending die 210 with the liquid inlet pipe 400 when it approaches the liquid inlet pipe 400, thereby effectively protecting the liquid inlet pipe 400 from damage.

[0052] Specifically, the positioning assembly 300 includes a positioning drive assembly 310 and a positioning clamp 320 . The positioning drive assembly 310 drives the positioning clamp 320 to clamp or release, thereby fixing the section to be bent of the liquid inlet pipe 400 .

[0053] In some embodiments of the present invention, the positioning jaw 320 includes a first jaw 330 and a second jaw 340, wherein the first jaw 330 is disposed on a first end of a first swing arm 350, and the second jaw 340 is disposed on a first end of a second swing arm 360;

[0054] The middle parts of the first swing arm 350 and the second swing arm 360 are both rotatably disposed on the fixing frame 370 , and the second ends of the first swing arm 350 and the second ends of the second swing arm 360 are both connected to the positioning drive assembly 310 .

[0055] In some of the above-mentioned embodiments of the present invention, the middle parts of the first swing arm 350 and the second swing arm 360 are both rotatably set on the fixed frame 370, the first clamp 330 is set on the first end of the first swing arm 350, and the second clamp 340 is set on the first end of the second swing arm 360. The positioning drive assembly 310 drives the first swing arm 350 and the second swing arm 360 to rotate synchronously, so that the first clamp 330 and the second clamp 340 are close to each other or away from each other, thereby clamping the liquid inlet pipe 400. This structure can effectively ensure that the liquid inlet pipe 400 will not contact and collide with the positioning clamp 320 when feeding, and effectively protect the liquid inlet pipe 400 from being damaged during feeding.

[0056] In some embodiments of the present invention, the bending tube drive assembly 230 includes a bending tube drive motor 240 and a bending tube swing arm 250, the bending tube swing arm 250 is a U-shaped structure, and the two free ends of the bending tube swing arm 250 are rotatably set on a bearing seat 260, and the bending tube drive motor 240 is transmission-connected to the bending tube swing arm 250.

[0057] In some of the above-mentioned embodiments of the present invention, the bending pipe swing arm 250 is a U-shaped structure, and the two free ends of the bending pipe swing arm 250 are rotatably set on the bearing seat 260. The bending pipe driving motor 240 is transmission-connected with the bending pipe swing arm 250, so as to drive the bending pipe swing arm 250 to rotate around the rotating axes of the two free ends of the bending pipe swing arm 250. The bending mold moving assembly 220 and the positioning assembly 300 are both arranged on the bending pipe swing arm 250, which can follow the rotation of the bending pipe swing arm 250 to complete the bending of the liquid inlet pipe 400.

[0058] In some embodiments of the present invention, the bending die moving assembly 220 includes a bending die driving cylinder 270 and a guide rod 280, the guide rod 280 is arranged on the bending tube swing arm 250, and a guide hole 290 is arranged on the bending die 210, the guide rod 280 cooperates with the guide hole 290, and the bending die driving cylinder 270 is connected to the bending die 210 to drive the bending die 210 to move along the guide rod 280.

[0059] In some of the above-mentioned embodiments of the present invention, a guide rod 280 is provided on the bending tube swing arm 250, and a guide hole 290 is provided on the bending die 210. The guide rod 280 and the guide hole 290 cooperate with each other, and the bending die driving cylinder 270 is connected to the bending die 210, so that the bending die 210 can reciprocate along the direction of the guide rod 280, thereby avoiding the problem of the bending die 210 being offset and colliding with the liquid inlet pipe 400, and effectively ensuring the accuracy of the reciprocating movement of the bending die 210.

[0060] In some embodiments of the present invention, guide plates 211 are further included. The guide plates 211 are arranged on both sides of the bending die 210 to form guide tracks for the bending die 210 to move.

[0061] In some of the above-mentioned embodiments of the present invention, guide plates 211 are arranged on both sides of the bending die 210, and the two guide plates 211 form a guide track. The bending die 210 moves along the guide track, thereby further avoiding the problem of the bending die 210 being offset and colliding with the liquid inlet pipe 400, and effectively ensuring the accuracy of the reciprocating movement of the bending die 210.

[0062] In some embodiments of the present invention, the clamping assembly 100 includes a clamping module and a clamping drive assembly 130, the clamping module includes a first clamping module 110 and a second clamping module 120, the second clamping module 120 is connected to the clamping drive assembly 130, and the clamping drive assembly 130 drives the second clamping module 120 to move closer to or away from the first clamping module 110 to clamp or release the liquid inlet tube 400.

[0063] In some of the above-mentioned embodiments of the present invention, the clamping assembly 100 includes a clamping module and a clamping drive assembly 130, and the clamping module includes a first clamping module 110 and a second clamping module 120. The clamping drive assembly 130 drives the second clamping module 120 to move back and forth, thereby clamping or releasing the liquid inlet tube 400, thereby effectively fixing the liquid inlet tube 400.

[0064] It is understandable that the first clamping module 110 and the second clamping module 120 are respectively provided with clamping grooves, and the clamping grooves on the first clamping module 110 and the second clamping module 120 are matched with the liquid inlet pipe 400 after being assembled, thereby ensuring that the liquid inlet pipe 400 can be effectively clamped.

[0065] It should be noted that, in order to ensure the clamping accuracy, a guide assembly may be provided between the first clamping module 110 and the second clamping module 120. The guide assembly is a guide rail and slider matching structure or a sliding rod and sliding hole matching structure.

[0066] In some embodiments of the present invention, a curved transition portion 140 is provided at the end of the second clamping module 120 .

[0067] In some of the above embodiments of the present invention, when the bending tube driving assembly 230 drives the two sets of the bending mold moving assemblies 220 to rotate at a preset angle to bend the liquid inlet tube 400 , the liquid inlet tube 400 bends along the bending transition portion 140 .

[0068] It can be understood that the curved transition portion 140 is configured to have a shape that matches the curvature of the liquid inlet pipe 400 , and a curved groove that matches the liquid inlet pipe 400 is also provided on the curved transition portion 140 .

[0069] In some embodiments of the present invention, at least two groups of the clamping modules are provided, and at least two groups of the second clamping modules 120 are connected to the clamping drive assembly 130;

[0070] At least two groups of the bending dies 210 and the bending die moving components 220 are provided, and the at least two groups of the bending dies 210 and the bending die moving components 220 are respectively provided corresponding to the at least two groups of the clamping dies.

[0071] In some of the above-mentioned embodiments of the present invention, the clamping drive assembly 130 is used to drive at least two groups of second clamping modules 120 to move, respectively clamping at least two groups of liquid inlet pipes 400; at least two groups of bending dies 210 and bending module moving assemblies 220 are arranged corresponding to the clamping modules, and the bending tube drive assembly 230 can simultaneously drive at least two groups of the bending dies 210 to rotate a preset angle to bend at least two groups of liquid inlet pipes 400, thereby greatly improving production efficiency.

[0072] The present invention also provides a pipe bending machine, comprising the pipe bending assembly as described above.

[0073] Embodiment 1:

[0074] The elbow assembly provided by the present invention comprises:

[0075] The clamping assembly 100 includes a clamping drive assembly 130 and two groups of clamping modules, the two groups of clamping modules include a first clamping module 110 and a second clamping module 120, the two groups of the second clamping modules 120 are connected to the clamping drive assembly 130, and the clamping drive assembly 130 drives the second clamping module 120 to move closer to or away from the first clamping module 110 to clamp or release the liquid inlet tube 400.

[0076] The bending assembly 200 includes a bending die 210, a bending die moving assembly 220 and a bending pipe driving assembly 230. The bending die 210 is connected to the bending die moving assembly 220, and two groups of the bending die 210 and the bending die moving assembly 220 are correspondingly arranged. The bending die moving assembly 220 drives the bending die 210 to move back and forth so that the bending die 210 is close to or away from the liquid inlet pipe 400.

[0077] The two groups of the bending die moving components 220 are both disposed on the bending tube driving component 230 , and the bending tube driving component 230 drives the two groups of the bending die moving components 220 to rotate at a preset angle to bend the liquid inlet pipe 400 .

[0078] A positioning assembly 300, wherein the positioning assembly 300 is disposed on the tube bending drive assembly 230, and the bending die 210 is disposed between the clamping assembly 100 and the positioning assembly 300;

[0079] The positioning assembly 300 includes a positioning drive assembly 310 and a positioning jaw 320 . The positioning jaw 320 is connected to the positioning drive assembly 310 . The positioning drive assembly 310 is used to drive the positioning jaw 320 to clamp or release the liquid inlet pipe 400 .

[0080] Furthermore, a bending transition portion 140 is provided at the end of the second clamping die set 120 . When the bending tube driving assembly 230 drives the two sets of the bending die moving assemblies 220 to rotate at a preset angle to bend the liquid inlet pipe 400 , the liquid inlet pipe 400 bends along the bending transition portion 140 .

[0081] Further, the positioning jaw 320 includes a first jaw 330 and a second jaw 340, wherein the first jaw 330 is disposed on a first end of a first swing arm 350, and the second jaw 340 is disposed on a first end of a second swing arm 360;

[0082] The middle parts of the first swing arm 350 and the second swing arm 360 are both rotatably disposed on the fixing frame 370 , and the second ends of the first swing arm 350 and the second ends of the second swing arm 360 are both connected to the positioning drive assembly 310 .

[0083] Specifically, the clamping drive assembly 130 is a clamping drive cylinder.

[0084] The bending tube drive assembly 230 includes a bending tube drive motor 240 and a bending tube swing arm 250 . The bending tube swing arm 250 is a U-shaped structure. The two free ends of the bending tube swing arm 250 are rotatably arranged on a bearing seat 260 . The bending tube drive motor 240 is transmission-connected to the bending tube swing arm 250 .

[0085] The positioning drive assembly 310 is a positioning drive cylinder.

[0086] Furthermore, the bending die moving assembly 220 includes a bending die driving cylinder 270, a guide rod 280 and a guide plate 211, the guide rod 280 is arranged on the bending tube swing arm 250, and a guide hole 290 is arranged on the bending die 210, the guide rod 280 cooperates with the guide hole 290, and the bending die driving cylinder 270 is connected to the bending die 210 to drive the bending die 210 to move along the guide rod 280.

[0087] There are two groups of guide plates 211 , and the two groups of guide plates 211 are arranged on both sides of the bending die 210 to form a guide track for the bending die 210 to move.

[0088] The present invention also provides a pipe bending machine, comprising the pipe bending assembly as described above.

[0089] The working process of the pipe bending machine of the present invention is as follows:

[0090] A. The liquid inlet pipe 400 is fed to a specified length, and the clamping drive assembly 130 drives the second clamping module 120 to move and clamp the liquid inlet pipe 400;

[0091] B. The positioning drive assembly 310 drives the positioning clamp 320 to clamp the liquid inlet pipe 400;

[0092] C. The bending tube driving assembly 230 drives the bending die 210 to move back and forth, so that the bending die 210 is close to the liquid inlet pipe 400;

[0093] D. The positioning drive assembly 310 drives the positioning clamp 320 to release the liquid inlet pipe 400;

[0094] E. The bending tube driving assembly 230 drives the two sets of the bending mold moving assemblies 220 to rotate to a preset angle to bend the liquid inlet tube 400;

[0095] F. The bending tube driving assembly 230 drives the bending die 210 to move back and forth, so that the bending die 210 is away from the liquid inlet pipe 400;

[0096] G. The pipe bending driving assembly 230 drives the two sets of the bending mold moving assemblies 220 to rotate in the opposite direction to reset at a preset angle. At this time, the pipe bending is completed.

[0097] In the description of this specification, the description with reference to the terms "example", "embodiment" or "some embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0098] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A pipe bending assembly, characterized in that: include: A clamping assembly, used for clamping the liquid inlet pipe; The bending assembly comprises a bending die, a bending die moving assembly and a bending pipe driving assembly, wherein the bending die is connected to the bending die moving assembly, and the bending die moving assembly drives the bending die to move back and forth so as to make the bending die approach or move away from the liquid inlet pipe; The bending die moving assembly is arranged on the bending tube driving assembly, and the bending tube driving assembly drives the bending die moving assembly and the bending die to rotate at a preset angle to bend the liquid inlet tube.

2. The elbow assembly according to claim 1, characterized in that: It also includes a positioning assembly, the positioning assembly is arranged on the bending tube driving assembly, and the bending die is arranged between the clamping assembly and the positioning assembly; The positioning assembly comprises a positioning drive assembly and a positioning jaw, wherein the positioning jaw is connected to the positioning drive assembly, and the positioning drive assembly is used to drive the positioning jaw to clamp or release.

3. The elbow assembly according to claim 2, characterized in that: The positioning clamp comprises a first clamp and a second clamp, wherein the first clamp is arranged on the first end of the first swing arm, and the second clamp is arranged on the first end of the second swing arm; The middle parts of the first swing arm and the second swing arm are both rotatably arranged on the fixing frame, and the second end of the first swing arm and the second end of the second swing arm are both connected to the positioning drive assembly.

4. The elbow assembly according to any one of claims 1 to 3, characterized in that: The bending tube drive assembly includes a bending tube drive motor and a bending tube swing arm. The bending tube swing arm is a U-shaped structure. The two free ends of the bending tube swing arm are rotatably arranged on a bearing seat. The bending tube drive motor is transmission-connected to the bending tube swing arm.

5. The elbow assembly according to claim 4, characterized in that: The bending die moving assembly includes a bending die driving cylinder and a guide rod, the guide rod is arranged on the bending pipe swing arm, a guide hole is arranged on the bending die, the guide rod cooperates with the guide hole, and the bending die driving cylinder is connected to the bending die to drive the bending die to move along the guide rod.

6. The elbow assembly according to claim 5, characterized in that: It also includes guide plates, which are arranged on both sides of the bending die to form guide tracks for the bending die to move.

7. The elbow assembly according to any one of claims 1 to 3, characterized in that: The clamping assembly includes a clamping module and a clamping drive assembly, the clamping module includes a first clamping module and a second clamping module, the second clamping module is connected to the clamping drive assembly, and the clamping drive assembly drives the second clamping module to move closer to or away from the first clamping module to clamp or release the liquid inlet tube.

8. The elbow assembly according to claim 7, characterized in that: A curved transition portion is provided at the end of the second clamping module.

9. The elbow assembly according to claim 7, characterized in that: The clamping modules are provided with at least two groups, and at least two groups of the second clamping modules are connected to the clamping drive assembly; The bending dies and bending die moving components are provided in at least two groups, and the at least two groups of the bending dies and bending die moving components are respectively provided corresponding to the at least two groups of the clamping die groups.

10. A pipe bending machine, characterized in that: It comprises a bent pipe assembly as described in any one of claims 1-9.

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