阅读说明：本技术 弯管设备及其滚轮组驱动机构 (Pipe bending equipment and roller set driving mechanism thereof ) 是由 林姚辰 林伟明 杜佳富 林敏建 宫志民 郑剑 吕超刚 叶炜俊 张垣西 于 2021-07-30 设计创作，主要内容包括：本发明涉公开了一种弯管设备及其滚轮组驱动机构,工作台、轮模座和滚轮,轮模座固定设置在工作台上方,滚轮位于工作台上方,还包括转盘,转盘转动设置在工作台上方,滚轮转动安装在转盘上,轮模座位于转盘上方,转盘转动带动滚轮围绕轮模座左侧圆弧面的轴线转动；该驱动机构包括丝杆、两个传动臂和两个滑块,两个传动臂一端铰接在转盘底部,两个传动臂与转盘的铰接点位于主轴两侧,两个传动臂另一端分别铰接在两个滑块上,丝杆上的螺纹分为两段并且互为反螺纹；通过丝杆进行驱动,通过丝杆精确的控制管件的弯制角度；丝杆配合两个传动臂,可以使整个机构跟家稳定。通过分度盘可以更加准确的观察管件的弯曲角度；通过快速夹可以将管件。(The invention discloses a pipe bending device and a roller train driving mechanism thereof, comprising a workbench, a roller die holder and rollers, wherein the roller die holder is fixedly arranged above the workbench, the rollers are positioned above the workbench, the pipe bending device also comprises a turntable, the turntable is rotationally arranged above the workbench, the rollers are rotationally arranged on the turntable, the roller die holder is positioned above the turntable, and the turntable rotates to drive the rollers to rotate around the axis of the arc surface on the left side of the roller die holder; the driving mechanism comprises a screw rod, two transmission arms and two sliding blocks, wherein one ends of the two transmission arms are hinged to the bottom of the rotary table, the hinged points of the two transmission arms and the rotary table are positioned on two sides of the main shaft, the other ends of the two transmission arms are respectively hinged to the two sliding blocks, and threads on the screw rod are divided into two sections and are mutually reverse threads; the pipe fitting bending angle is accurately controlled through the screw rod driven by the screw rod; the lead screw cooperates two driving arms, can make whole mechanism stable with the family. The bending angle of the pipe fitting can be observed more accurately through the dividing disc; the pipe can be clamped by a quick clamp.)

1. The utility model provides a roller train actuating mechanism, workstation (1), wheel die holder (4) and gyro wheel (5), wheel die holder (4) are fixed to be set up in workstation (1) top, and gyro wheel (5) are located workstation (1) top, its characterized in that: the left side surface of the wheel die holder (4) is an arc surface, the wheel die holder further comprises a turntable (3), the turntable (3) is rotatably arranged above the workbench (1), the roller (5) is rotatably arranged on the turntable (3), the wheel die holder (4) is positioned above the turntable (3), and the turntable (3) rotates to drive the roller (5) to rotate around the axis of the arc surface on the left side of the wheel die holder (4); the driving mechanism (2) comprises a screw rod (23), two transmission arms (28) and two sliding blocks (26), one ends of the two transmission arms (28) are hinged to the bottom of the rotary table (3), hinged points of the two transmission arms (28) and the rotary table (3) are located on two sides of the rotating center of the rotary table, the other ends of the two transmission arms (28) are hinged to the two sliding blocks (26) respectively, threads on the screw rod (23) are divided into two sections and are mutually reverse threads, and the screw rod (23) rotates to drive the two sliding blocks (26) to be close to or far away from each other; a first forming groove (41) which is concave inwards is formed in the arc surface on the left side of the wheel die holder (4), and a notch in the section of the first forming groove (41) is arc-shaped; set up fixed slot (42) of the sunken formation of inboard respectively on preceding, the back two sides of wheel die holder (4), the cross-section breach of two fixed slots (42) all is the arc, and first shaping groove (41) is the same with fixed slot (42) cross-section breach, and two fixed slots (42) all extend and run through wheel die holder (4) to controlling two directions, and two fixed slots (42) communicate with the front and back both ends in first shaping groove (41) respectively.

2. The roller train driving mechanism according to claim 1, wherein: fixed mounting has preceding fixing base (21) and rear fixing base (22) on workstation (1), and preceding fixing base (21) are located rear fixing base (22) left side, and lead screw (23) are rotated through graphite copper sheathing (29) and are installed in the front on fixing base (21) and rear fixing base (22), and on lead screw (23) extended right and run through rear fixing base (22), lead screw (23) right-hand member fixed mounting has handle (24).

3. The roller train driving mechanism according to claim 1, wherein: the two transmission arms (28) are bent arms.

4. The roller train driving mechanism according to claim 1, wherein: two adjusting grooves (31) are formed in the rotary plate (3), the two adjusting grooves (31) are symmetrically arranged on the rotary plate (3), an adjusting plate (32) is arranged on the rotary plate (3), the adjusting plate (32) can be fixed in any one adjusting groove (31) through a first locking screw, and the roller (5) is rotatably installed on the adjusting plate (32).

5. The roller train driving mechanism according to claim 4, wherein: the hinged parts of the two transmission arms (28) and the rotary table (3) are respectively positioned below the two adjusting grooves (31).

6. The roller train driving mechanism according to claim 5, wherein: a main shaft (8) is fixedly installed on the workbench (1), the turntable (3) is rotatably installed on the main shaft (8), and the distance between the hinged positions of the two transmission arms (28) and the turntable (3) and the main shaft (8) is the same.

7. The roller train driving mechanism according to claim 1, wherein: the driving mechanism (2) further comprises two feeding nuts (25), the two feeding nuts (25) are respectively installed on the two sections of threads of the screw rod (23), the two sliding blocks (26) are respectively and fixedly connected with the two feeding nuts (25), and the two feeding nuts (25) are arranged in the left-right direction.

8. The roller train driving mechanism according to claim 7, wherein: the driving mechanism (2) also comprises two guide rods (27), wherein the left end of one guide rod (27) is fixedly connected with the left feeding nut (25), and the right end of the guide rod (27) is in sliding fit with the right feeding nut (25); the left end of the other guide rod (27) is in sliding fit with the left feeding nut (25), and the right end of the guide rod (27) is fixedly connected with the right feeding nut (25); the two sliding blocks (26) are respectively fixed on the two guide rods (27).

9. The roller train driving mechanism according to claim 8, wherein: the two guide rods (27) are connected in a sliding manner by two feed nuts (25) through linear bearings (251).

10. A pipe bending apparatus, characterized in that: a roller train drive mechanism comprising a indexing plate (35) with angular markings, the indexing plate (35) being fixed to the table (1), and a plurality of quick clamps (6) for securing pipes.

Technical Field

The invention relates to the field of pipe bending machines, in particular to pipe bending equipment and a roller set driving mechanism thereof.

Background

Pipe bending is commonly used in the manufacturing and assembly of parts, but most of the prior various manual pipe bending machines are time-consuming and labor-consuming although the structures are simple, and the precision cannot be guaranteed; and the manual pipe bender can only bend the same pipe fitting in a single direction, and cannot bend the same pipe fitting in multiple three-dimensional modes. The document with the publication number of CN 209222938 discloses a manual simple pipe bender for hardware manufacturing, which belongs to the technical field of hardware manufacturing equipment, and comprises a handle bar, a wheel mold, a clamp mold, an installation base, a large core screw rod, a small core screw rod, a fixing pin and a screw rod fixing nut, wherein the wheel mold is arranged inside the handle bar, the right end of the wheel mold is provided with the clamp mold, the lower end of the clamp mold is provided with the screw rod fixing nut, the lower end of the screw rod fixing nut is provided with the installation base, the small core screw rod is arranged inside the wheel mold, the large core screw rod is arranged inside the clamp mold, and the fixing pin is arranged on the upper end of the large core screw rod and the upper end of the small core screw rod. In the above-mentioned patent, the in-process of return bend relies on the manual work to be crooked, and this kind of mode is not only hard, moreover to the unable accurate control of angle of return bend.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a pipe bending apparatus and a roller train driving mechanism thereof, which are more labor-saving and highly accurate.

In order to achieve the purpose, the invention adopts the following technical scheme: a roller train driving mechanism comprises a workbench, a roller mold seat and rollers, wherein the roller mold seat is fixedly arranged above the workbench, the rollers are positioned above the workbench, the roller train driving mechanism also comprises a turntable, the turntable is rotatably arranged above the workbench, the rollers are rotatably arranged on the turntable, the roller mold seat is positioned above the turntable, and the turntable rotates to drive the rollers to rotate around the axis of the arc surface on the left side of the roller mold seat; the driving mechanism comprises a screw rod, two transmission arms and two sliding blocks, wherein one ends of the two transmission arms are hinged to the bottom of the rotary table, the hinged points of the two transmission arms and the rotary table are positioned on two sides of the rotating center of the rotary table, the other ends of the two transmission arms are respectively hinged to the two sliding blocks, threads on the screw rod are divided into two sections and are mutually reverse threads, and the screw rod rotates to drive the two sliding blocks to be close to or away from each other; a first forming groove which is concave inwards is arranged on the arc surface on the left side of the wheel die holder, and a notch in the section of the first forming groove is arc-shaped; set up the fixed slot that forms to the sunken inboard respectively on preceding, the back two sides of wheel die holder, the cross-section breach of two fixed slots all is the arc, and first shaping groove is the same with fixed slot cross-section breach, and two fixed slots all extend and run through the wheel die holder to controlling two directions, and two fixed slots communicate with the front and back both ends in first shaping groove respectively.

Preferably, fixed mounting has preceding fixing base and back fixing base on the workstation, and preceding fixing base is located back fixing base left side, and the lead screw passes through graphite copper sheathing and rotates the installation in the front on fixing base and back fixing base, and on the lead screw extended right and run through the back fixing base, lead screw right-hand member fixed mounting had the handle. In this way, manual control is facilitated and the life of the drive mechanism is increased.

Preferably, both the transmission arms are bent arms. In this way, the range of rotation of the turntable can be increased.

Preferably, the turntable is provided with two adjusting grooves which are symmetrically arranged on the turntable, the turntable is provided with an adjusting plate, the adjusting plate can be fixed in any one adjusting groove through a first locking screw, and the roller is rotatably arranged on the adjusting plate. The roller is convenient to replace and maintain.

Preferably, the joints of the two transmission arms and the rotary table are respectively positioned below the two adjusting grooves. This serves to increase the stability of the device.

Preferably, the workbench is fixedly arranged on the main shaft, the turntable is rotatably arranged on the main shaft, and the distances between the hinged parts of the two transmission arms and the turntable and the main shaft are the same. In this way, the stability of the device can be increased.

Preferably, the driving mechanism further comprises two feeding nuts, the two feeding nuts are respectively installed on the two sections of threads of the screw rod, the two sliding blocks are respectively and fixedly connected with the two feeding nuts, and the two feeding nuts are arranged in the left-right direction. Thus, the driving can be made more stable.

Preferably, the driving mechanism further comprises two guide rods, wherein the left end of one guide rod is fixedly connected with the left feeding nut, and the right end of the guide rod is in sliding fit with the right feeding nut; the left end of the other guide rod is in sliding fit with the feeding nut on the left side, and the right end of the guide rod is fixedly connected with the feeding nut on the right side; the two sliding blocks are respectively fixed on the two guide rods, and the two guide rods are positioned on two sides of the screw rod. Thus, the driving can be made more stable.

Preferably, the two guide rods are slidably connected by two feed nuts via linear bearings. Thus, the guide bar is prevented from jumping radially, and the sliding is more convenient.

A pipe bending device comprises the roller set driving mechanism, an index plate with angle marks, a plurality of quick clamps for fixing pipe fittings and a workbench.

Compared with the prior art, the invention has the beneficial effects that:

the technical scheme of the invention; the pipe fitting bending machine is driven through the screw rod, on one hand, the bending angle of the pipe fitting can be accurately controlled through the screw rod, and on the other hand, the screw rod is driven to be more labor-saving and safer. The lead screw of positive and negative tooth screw thread cooperates two transmission arms, can make whole mechanism more stable. The bending angle of the pipe fitting can be observed more accurately through the dividing disc; the pipe fitting can be clamped by the quick clamp; can increase through the fixed slot that is arc breach form and the area of contact between the pipe fitting, the same left shaping groove of wheel die holder can increase and the area of contact between the pipe fitting, prevents at the in-process of return bend that the fold appears in the pipe fitting.

Drawings

FIG. 1 is a first schematic view of a pipe bending process;

FIG. 2 is a second schematic view of a pipe bending process;

FIG. 3 is a third schematic view of a pipe bending process;

FIG. 4 is a fourth schematic view of a pipe bending process;

FIG. 5 is a schematic view of a bent pipe forming apparatus with the drive mechanism removed;

FIG. 6 is a cross-sectional view taken at A-A of FIG. 5;

FIG. 7 is a schematic view of a connection structure of the die holder, the turntable and the roller;

FIG. 8 is a schematic view of the die holder and the roller removed;

FIG. 9 is a schematic view of the driving mechanism;

FIG. 10 is a schematic view of a bent pipe;

fig. 11 is a schematic view of a wheel die holder structure.

Reference numerals: 1. a work table; 11. a working panel; 12. a support frame; 2. a drive mechanism; 21. a first bearing housing; 22. a second bearing housing; 23. a screw rod; 24. a handle; 25. a feed nut; 251. a linear bearing; 26. a slider; 27. a guide bar; 28. a drive arm; 281. a first hinge shaft; 282. a second hinge shaft; 29. a graphite copper sleeve; 3. a turntable; 31. an adjustment groove; 311. a threaded hole; 32. an adjusting plate; 321. a limiting hole; 33. a roller shaft; 34. a third locking screw; 35. an index plate; 36. a gland; 4. a wheel die holder; 41. a first forming groove; 42. fixing grooves; 43. an installation part; 44. a second positioning hole; 5. a roller; 6. quickly clamping; 8. a main shaft; 81. a connecting bond; 82. a first lock nut; 83. a second lock nut; 84. a third lock nut; 85. a bearing compression ring; 86. a first bearing; 87. a second bearing; 88. a second locking screw; 10. a pipe fitting; 101. a first straight line segment; 102. a first curved section; 103. a second straight line segment; 104. a second curved section; 105. a third straight line segment; 106. a third curved section; 107. the fourth straight line segment.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1-4, a multidirectional multi-angle pipe fitting bending equipment, comprises a workbench 1, a roller 5, a wheel die holder 4, a turntable 3, a driving mechanism 2 for driving the turntable 3 to rotate and a plurality of quick clamps 6 for clamping the pipe fitting 10 tightly, fix the pipe fitting 10 on the front side or the rear side of the arc-shaped end of the wheel die holder 4 through the quick clamps 6, the turntable 3 rotates and is installed above the workbench 1, the wheel die holder 4 is fixedly installed above the workbench 1, the wheel die holder 4 is located above the turntable 3, the roller 5 rotates and is installed above the turntable 3, the turntable 3 drives the roller 5 to rotate around the axis of the arc-shaped end of the wheel die holder 4. The working strip 1 comprises a working panel 11 and a support frame 12, and the support frame 11 is fixedly connected to the bottom plate of the working panel 11.

The left end of the wheel die holder 4 is a semicircular arc surface, a first forming groove 41 which is concave inwards is arranged on the arc surface on the left side of the wheel die holder 4, and a section gap of the first forming groove 41 is arc-shaped; fixing grooves 42 which are formed by sinking inwards are respectively formed in the front side surface and the rear side surface of the wheel die holder 4, the section gaps of the two fixing grooves 42 are arc-shaped, the section gaps of the first forming groove 41 and the fixing grooves 42 are the same, the two fixing grooves 42 extend towards the left direction and the right direction and penetrate through the wheel die holder 4, and the two fixing grooves 42 are respectively communicated with the front end and the rear end of the first forming groove 41; all there is installation department 43 protruding on two terminal surfaces in the front and back of wheel die holder 4, and the installation department is located fixed slot 42 top, and a plurality of quick-operation pieces 6 are symmetry fixed mounting respectively at two installation departments 43 tops. The outer circumference of the roller 5 is provided with a second forming groove which is inwards concave, and the section gap of the second forming groove is the same as that of the first forming groove 41.

Before pipe bending, the pipe 10 is inserted between the wheel die holder 4 and the roller 5, after the bending position of the pipe 10 is determined, the pipe 10 is fixed at the fixing groove 42 of the wheel die holder 4 through the quick clamp 6. The structure of the quick clamp 6 can refer to patent documents such as a quick chuck disclosed in CN204843937U and an adjustable quick clamp disclosed in CN 104625996A. In the embodiment, the quick clamp 6 comprises a clamp seat, a pressing handle, a connecting plate, a pressing plate and a pressing head, wherein the clamp seat is fixed at the top of the mounting part, the pressing handle is hinged on the clamp seat, the pressing plate is hinged at one end of the pressing handle, two ends of the connecting plate are respectively hinged with the pressing handle and the pressing plate, and the pressing head is fixed on the pressing plate; when the pipe fitting 10 is fixed, the pressing handle is pressed downwards, so that the pressing plate drives the pressing head to press the pipe fitting 10 between the wheel die seat 4 and the pressing head, and meanwhile, the angle of the pressing plate is locked by the connecting plate; after the pipe fitting is formed, the pressing handle is reversely lifted, so that the pressing plate and the pressing head are driven to act, and the pipe fitting 10 is released.

In this embodiment, as shown in fig. 5 to 8, the apparatus further includes a main shaft 8, a bottom of the main shaft 8 is fixedly mounted on the working panel 11, the turntable 3 is rotatably mounted on the main shaft 8, an axis of the turntable 3 coincides with an axis of the main shaft 8, the main shaft 8 is coaxial with a circular arc surface on a left side of the wheel mold base 4, the wheel mold base 4 is fixedly mounted on the main shaft 8, and the turntable 3 is located below the wheel mold base 4. The main shaft 8 is a stepped shaft, the diameter of the middle part of the main shaft 8 is larger than the diameters of the upper end and the lower end, the main shaft 8 is provided with three shaft shoulders, the sections of the upper side and the lower side of the main shaft 8 are fixedly connected with connecting keys 81, and a convex first positioning hole is formed in the working panel 11; when the main shaft 8 is fixed, the bottom section of the main shaft 8 is inserted into and penetrates through the first positioning hole, the connecting key 81 positioned on the lower side is inserted into the first positioning hole, the shaft shoulder positioned on the lower side of the main shaft 8 is abutted against the top of the working panel 11, and the main shaft 8 is fixed on the working panel 11 through the first locking nut 82; the first lock nut 82 is screwed to the main shaft 8, and the main shaft 8 is fixed to the work panel 11 by screwing the first lock nut 82 from bottom to top. The rotary disc 3 is rotatably mounted: the turntable 3 is rotatably connected with the main shaft 8 through the first bearing 86, the first bearing 86 is installed at a shaft shoulder position in the middle of the main shaft 8, the shaft shoulder of the main shaft 8 is abutted to the bottom of an inner ring of the first bearing 86, the main shaft 8 is sleeved with the bearing compression ring 85, the main shaft 8 is connected with the third locking nut 84 through threads, the bearing compression ring 85 is located between the turntable 3 and the third locking nut 84, and the bearing compression ring 85 is used for limiting axial movement of the turntable 3.

And (3) fixedly mounting the wheel die holder 4: a second positioning hole 44 is formed in the wheel die holder 4, the second positioning hole 44 comprises a through hole and a key groove, the through hole penetrates through the wheel die holder 4, the key groove is formed in the bottom of the wheel die holder 4, the key groove is communicated with the through hole, and a second locking nut 83 is arranged at the top section of the main shaft 8 in a threaded connection mode; the wheel die holder 4 is fixedly arranged on the main shaft 8 through a second locking nut 83 and a connecting key 81, when the wheel die holder 4 is arranged, the wheel die holder 4 is arranged on the main shaft 8 from bottom to top, the main shaft 8 penetrates through a through hole of the second positioning hole 44, the connecting key 81 fixed on the upper side section of the main shaft 8 is inserted into a key groove of the second positioning hole 44 from bottom to top, and a shaft shoulder on the upper side of the main shaft 8 is used for supporting the wheel die holder 4; be equipped with second lock nut 83 on the top section of main shaft 8, second lock nut 83 and main shaft 8 threaded connection, second lock nut 83 is located wheel die holder 4 upside, so fixes wheel die holder 4 on main shaft 8 through second lock nut 83. With the arrangement, the disassembly, assembly and maintenance of the equipment and the replacement of parts are facilitated through the structures such as the nut and the connecting key 81; the pipe fitting die holder 4 is suitable for processing pipe fittings 10 with various specifications in a mode of replacing the die holder. The axis of the main shaft 8 coincides with the axis of the circular arc surface at the left end of the wheel die holder 4. A key groove is formed in the bottom of the wheel die holder 4 and is communicated with the second positioning hole 44, a section, with a connecting key 81, on the upper side of the main shaft 8 is inserted into and penetrates through the second positioning hole 44, the connecting key 81 on the upper side is inserted into the key groove, and the top of the connecting key 81 is abutted against the top of the key groove, so that the wheel die holder 4 is supported on the main shaft 8 and the rotation of the main shaft 8 is limited; the top of the main shaft 8 is connected with a second locking nut 83 in a threaded manner, and the second locking nut 83 is rotated to compress the top of the wheel die holder 4, so that the wheel die holder 4 is fixed on the main shaft 8. According to the arrangement, the spindle 8 is used for limiting the radial movement of the wheel die holder 4, the connecting key 81 and the second locking nut 83 are used for limiting the axial movement of the wheel die holder 4, and the connecting piece is used for limiting the rotation of the wheel die holder 4; meanwhile, through the structures such as the nut and the connecting key 81, the disassembly, the assembly and the maintenance of the equipment and the replacement of parts are facilitated; the method is suitable for processing the pipe fittings 10 with various calibers by replacing the wheel die holder 4. The wheel die holder 4 is fixedly arranged on the main shaft 8, and the axis of the main shaft 8 is superposed with the axis of the arc surface on the left side of the wheel die holder 4. The equipment structure is simplified, so that the installation and the processing are more convenient.

In this embodiment, the top of the turntable 3 is provided with two adjusting grooves 31, the two adjusting grooves 31 are symmetrically arranged, the apparatus further includes an adjusting plate 32, and the adjusting plate 32 is fixed in any one of the adjusting grooves 31 through a first locking screw; the bottom surfaces of the two adjusting grooves 31 are respectively provided with a plurality of threaded holes 311 matched with the first locking screws, so that the distance between the adjusting plate 32 and the wheel die holder 4 can be adjusted in a large range by connecting the first locking screws with the threaded holes 311 at different positions; a limiting hole 321 is formed in the adjusting plate 32, the limiting hole 321 is a stepped hole, the limiting hole 321 penetrates through the adjusting plate 32 from top to bottom, a threaded part of the first locking screw penetrates through the limiting hole 321 to be connected with the threaded hole 311 in the turntable 3, and during locking, the head of the first locking screw is only required to be tightly abutted against the stepped surface of the limiting hole 321, so that the position of the adjusting plate 32 is fixed; before the adjusting plate 32 is completely fixed, the adjusting plate 32 can be moved in a small range, so that the distance between the wheel die holder 4 and the adjusting plate 32 is more accurate; the moving range of the adjusting plate 32 is about the length of the limiting hole 321; furthermore, there are two limiting holes 321, the adjusting plate 32 is fixed on the turntable 3 by two first locking screws, and the roller shaft 33 is located between the two limiting holes 321. When the roller 5 is installed: the roller 5 is rotatably arranged on the roller shaft 33, and the roller shaft 33 is fixed on the adjusting plate 32 through a second locking screw 88; the adjusting plate 32 is provided with a counter bore, the counter bore penetrates through the adjusting plate 32 from bottom to top, and the second locking screw 88 penetrates through the counter bore from bottom to top and is in threaded connection with the roller shaft 33; the roller shaft 33 is a step shaft, the diameter of the bottom of the roller shaft 33 is larger, the roller 5 is rotatably mounted on the roller shaft 33 through two second bearings 87, the two second bearings 87 are arranged in the vertical direction, the inner ring of the second bearing 87 positioned at the lower side is abutted against the shaft shoulder of the roller shaft 33, the top of the roller shaft 33 is provided with a third locking screw 34 in a threaded connection manner, the threaded section of the third locking screw 34 is sleeved with a gland 36, the gland 36 is abutted against the inner ring of the second bearing 87 positioned at the upper side, the third locking screw 34 is screwed, the head of the third locking screw 34 is abutted against the gland, and the roller 5 is further mounted on the roller shaft 33,

in the present embodiment, as shown in fig. 9, the driving mechanism 2 includes a screw 23, two transmission arms 28, and two sliders 26; the lead screw 23 is positive and negative tooth lead screw, the lead screw 23 rotates and sets up in the operating panel 11 top, the lead screw 23 is used for driving two sliders 26 left and right sides direction removal, but two sliders 26's moving direction is opposite, two driving arms 28 articulate respectively at two sliders 26's top through two second articulated shafts 282 with one end, two driving arms 28's the other end articulates in the bottom of carousel 3 through two first articulated shafts 281, two first articulated shafts 281 are located the adjustment tank 31 below respectively with carousel 3 articulated position, distance between two first articulated shafts 281 and the main shaft 8 is the same. The apparatus further comprises a first bearing housing 21, a second bearing housing 22, two feed nuts 25, two guide rods and two linear bearings; the first bearing seat 21 and the second bearing seat 22 are fixedly installed on the top end face of the working panel 11, the first bearing seat 21 is located on the left side of the second bearing seat 22, graphite copper sleeves 29 are installed on the first bearing seat 21 and the second bearing seat 22 respectively, the screw rod 23 is installed on the first bearing seat 21 and the second bearing seat 22 through 29 rotation by two graphites, the two graphite copper sleeves 29 are installed on the first bearing seat 21 and the second bearing seat 22 respectively, the screw rod 23 extends through the second bearing seat 22 rightwards, and a handle 24 is fixedly installed at the right end of the screw rod 23; the thread section of the screw rod 23 is positioned between the first bearing seat 21 and the second bearing seat 22, the thread on the screw rod 23 is divided into two sections, and the two sections of threads are mutually reverse threads; the two feeding nuts 25 are respectively arranged on the two sections of threads of the screw rod 23, and the two feeding nuts 25 are arranged in the left-right direction; the two guide rods 27 are respectively arranged at the front side and the rear side of the screw 23, the right end of the guide rod 27 at the rear side is fixed on the feeding nut 25 at the right side, the guide rod 27 at the rear side extends through the feeding nut 25 at the left side leftwards, the guide rod 27 at the rear side is in sliding connection with the feeding nut at the left side through one linear bearing 251, the left end of the guide rod 27 at the front side is fixedly connected with the feeding nut 25 at the left side, the guide rod 27 at the front side extends through the feeding nut 25 at the right side rightwards, and the guide rod 27 at the front side is in sliding connection with the feeding nut 25 at the right side through the other linear bearing 251. Two slide blocks 26 are located between the two feed nuts 25, the two slide blocks 26 being fixed to two guide rods 27, respectively. Furthermore, the two driving arms 28 are both bent arms, so that the rotation angle of the rotary plate 3 can be increased. When the driving turntable 3 rotates: the hand handle 24 further drives the screw rod 23 to rotate, the screw rod 23 rotates to drive the two feeding nuts 25 to approach or separate from each other, the two feeding nuts 25 respectively drive the two sliding blocks 26 to move together with the guide rod 27, the two sliding blocks 26 drive the two transmission arms 28 to act, and the two transmission arms 28 drive the turntable 3 to rotate through the first hinge rod 281; when the two feed nuts 25 are close to each other, the apparatus is viewed from above, and the rotary table 3 is rotated forward; when the two feed nuts 25 are distanced from each other, the carousel 3 is inverted, looking down on the apparatus.

In this embodiment, the rotary table further comprises an indexing disc 35 with an angle mark, the indexing disc 35 is arc-shaped, and the rotary table 3 is located on the inner side of the indexing disc 35. The indexing disk 35 is at the same height as the rotating disk 3.

In daily life and work, bent pipes with multiple directions and multiple bending angles are often encountered, planes of bending positions of the bent pipes are occasionally parallel to each other, but most planes of the bent pipes have certain included angles. In the present embodiment, as shown in fig. 10, the bent pipe 10 includes a first straight line segment 101, a second straight line segment 103, a third straight line segment 105, and a fourth straight line segment 107; the first straight line section 101 is vertically erected, the bottom of the first straight line section 101 is connected with a second straight line section 103 through a first bent section 102, the second straight line section 103 points to the right, the other end of the second straight line section 103 is connected with a third straight line section 105 through a second bent section 104, the third straight line section 105 points to the right front, the other end of the third straight line section 105 is connected with a fourth straight line section 107 through a third bent section 106, and the fourth straight line section 107 points to the right; the same plane where the center lines of the first straight line segment 101, the first bent segment 102 and the second straight line segment 103 are located is a first plane; the same plane where the center lines of the second straight line section 103, the second bending section 104 and the third straight line section 105 are located is a second plane, and the same plane where the center lines of the third straight line section 105, the third bending section 106 and the fourth straight line section 107 are located is a third plane; the first plane, the second plane and the third plane are not parallel to each other and any two planes have included angles.

Taking the pipe 10 described in this embodiment as an example, the bending process of the pipe 10 is as follows: as shown in fig. 1 and 2, when the pipe 10 is bent for the first time, the pipe 10 is inserted between the roller 5 and the die holder 4, and after the bending position of the pipe 10 is determined, the pipe 10 is fixed on the die holder 4 by using the quick clamp 6; the driving mechanism 2 drives the turntable 3 to rotate clockwise, the turntable 3 rotates to drive the roller 5 to move around the main shaft 8, the roller 5 pushes the pipe 10 when moving, the pipe 10 is bent backwards along the left end of the wheel die seat 4, and the pipe 10 is bent for the first time; when the bending angle is reached, the rotary disc 3 is driven to rotate anticlockwise, so that the roller 5 is reset, the quick clamp 6 is opened to take out the pipe fitting 10 which is bent for one time, the first straight line segment 101 and the first bending segment 102 are molded, and a first plane where the first straight line segment 101, the first bending segment 102 and the second straight line segment 103 are located is determined according to the center lines of the first straight line segment 101, the first bending segment 102 and the second straight line segment 103; as shown in fig. 3, when the pipe 10 is bent for the second time, the adjusting plate 32 is removed from the current adjusting groove 31, the adjusting plate 32 is installed in another adjusting groove 31 together with the roller 5, the pipe 10 is rotated to point the first straight line 101 upward, the rest positions of the pipe 10 are inserted into the gap between the roller 5 and the rear side of the wheel die holder 4, the position of the second bending section 104 is determined, fixing the pipe 10 by using the quick clamp 6, driving the turntable 3 to rotate clockwise, driving the roller 5 to move by the turntable 3, pushing the pipe 10 by the roller 5 to bend forward gradually along the left end of the wheel die seat 4, after the bending requirement is met, the driving turntable 3 rotates anticlockwise to reset the roller 5, the quick clamp 6 is opened, the pipe fitting 10 after the second bending is taken out, at the moment, the second straight line section 103 and the second bending section 104 are formed, determining a second plane of the second straight line section 103, the second bending section 104 and the third straight line section 105 according to the central lines of the second straight line section, the second bending section and the third straight line section; as shown in fig. 4, when the pipe 10 is bent for the third time, the adjusting plate 32 and the roller 5 are removed from the current adjusting groove 31, and the pipe 10 is installed in another adjusting groove 31, and then the remaining section of the pipe 10 is inserted into the gap between the die holder 4 and the roller 5, after the position of the third bending section 106 is determined, the pipe 10 is fixed on the die holder 4 by using the quick clamp 6, the rotary disc 3 is driven to rotate counterclockwise, the rotary disc 3 drives the roller 5 to move, the roller 5 pushes the pipe 10 to bend backward from the left side of the die holder 4, the rotary disc 3 is driven to rotate clockwise after the bending requirement is met, the roller 5 is reset, the quick clamp 6 is opened, the pipe 10 is taken out, the third plane where the pipe 10 is located is driven according to the center lines of the third straight line section 105, the third bending section 106, and the fourth straight line section 107, and at this time, the pipe 10 completes multidirectional and multi-angle bending molding on the same device.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.