CN113458212A

CN113458212A - Manual pipe bending equipment and pipe bending method thereof

Info

Publication number: CN113458212A
Application number: CN202110875955.1A
Authority: CN
Inventors: 林姚辰; 林伟明; 杜佳富; 宫志民; 郑剑; 马晶晶; 应凌峰; 冯运; 刘高均
Original assignee: Zhejiang King Mazon Machinery Co ltd
Current assignee: Zhejiang King Mazon Machinery Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-10-01
Anticipated expiration: 2041-07-30
Also published as: CN113458212B

Abstract

The invention discloses a manual pipe bending device and a pipe bending method thereof; the pipe fitting bending machine comprises a workbench, rollers and a roller die holder, and further comprises a pipe fitting to be bent, a turntable, a driving mechanism for driving the turntable to rotate and a plurality of quick clamps, wherein the turntable is rotatably arranged above the workbench, the roller die holder is fixedly arranged above the turntable, two adjusting grooves are formed in the turntable, the two adjusting grooves are symmetrically arranged on the front side and the rear side of the roller die holder, the rollers are detachably fixed in any one adjusting groove, the pipe fitting can be fixed on the front side or the rear side of the roller die holder by the plurality of quick clamps, the left side surface of the roller die holder is an arc surface, and the rollers move around the axis of the arc surface on the left side of the roller die holder; the driving mechanism comprises a handle, a screw rod, a sliding block and a transmission arm, the handle is fixed at the right end of the screw rod, the screw rod is rotatably arranged above the workbench, the sliding block is driven to move when the screw rod rotates, one end of the transmission arm is hinged on the sliding block, and the other end of the transmission arm is hinged at the bottom of the turntable; therefore, the bending of the pipe fitting can be completed more accurately in a labor-saving manner.

Description

Manual pipe bending equipment and pipe bending method thereof

Technical Field

The invention relates to the field of pipe bending machines, in particular to manual pipe bending equipment and a pipe bending method 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; the manual pipe bender can only bend the same pipe in a single direction, and cannot bend the same pipe in multiple multi-angle three-dimensional modes; when the manual pipe bender is used, the bending angle of the pipe is too large due to too large force, and other equipment is needed for shaping and repairing. The patent document with the publication number of CN 109158456A discloses a manual pipe bender convenient to operate, which comprises a bottom plate, wherein a fixed die is installed at the top of the center of the bottom plate, an extrusion screw is connected to the outer side, away from the bottom plate, of a first clamping plate, a first adjusting handle is installed at one end of the extrusion screw, a second clamping plate is installed between the first clamping plate and the fixed die, a fixed plate is installed at one side, close to the fixed die, of the second clamping plate, a connecting arm is installed at the top of the fixed die, a second adjusting handle is installed at one end of the connecting arm, and a movable die is installed at the bottom of the connecting arm; the return bend is placed between first splint and second splint, is bent behind second splint and the fixed plate in this patent, plays the effect of placing the return bend work piece of different crookedness respectively, can bend the processing to two return bends simultaneously, through the effect of manual rotation first adjustment handle after, drives first splint and compresses tightly to second splint department. In the process of bending the pipe fitting in the patent, the pipe fitting is bent purely by manpower, and force is not amplified, so that the whole process is time-consuming and labor-consuming; moreover, because a person cannot accurately judge the bending angle, the bending angle is extremely easy to be inaccurate in the bending process of the pipe fitting, reworking is needed, and the working efficiency is low; meanwhile, the movable die is directly fixed on the connecting arm, and in the pipe bending process, the movable die and the pipe fitting generate rigid friction, so that the pipe fitting is easy to deform and even damage.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a manual pipe bending apparatus with a more precise bending angle. Also provides a pipe bending method capable of manually bending the pipe fitting in multiple angles and directions.

In order to achieve the purpose, the invention adopts the following technical scheme: a manual pipe bending method comprises a workbench, rollers, a wheel die holder, a pipe to be bent, a turntable, a driving mechanism for driving the turntable to rotate and a plurality of quick clamps, wherein the turntable is rotatably arranged above the workbench, the wheel die holder is fixedly arranged above the turntable, the turntable is provided with two adjusting grooves, the two adjusting grooves are symmetrically arranged on the front side and the rear side of the wheel die holder, the rollers are detachably fixed in any one of the adjusting grooves, the plurality of quick clamps can fix the pipe on the front side or the rear side of the wheel die holder, the left side surface of the wheel die holder is an arc surface, and the rollers are driven to move around the axis of the arc surface on the left side of the wheel die holder when the turntable rotates; the driving mechanism comprises a handle, a screw rod, a sliding block and a transmission arm, the handle is fixed at the right end of the screw rod, the screw rod is rotatably arranged above the workbench, the sliding block is driven to move when the screw rod rotates, one end of the transmission arm is hinged on the sliding block, and the other end of the transmission arm is hinged at the bottom of the turntable; the pipe fitting comprises a first straight line section, a second straight line section, a third straight line section and a fourth straight line section, wherein the first straight line section is connected with the second straight line section through a first bending section, the second straight line section is connected with the third straight line section through a second bending section, the third straight line section is connected with the fourth straight line section through a third bending section, the first straight line section is arranged in the vertical direction, the second straight line section is positioned below the first straight line section and points to the right side, the third straight line section is positioned on the front side of the second straight line section and points to the right lower side, and the fourth straight line section is positioned on the front side of the third straight line section and points to the right side; the process that the driving mechanism drives the turntable to rotate is as follows: the hand-operated handle drives the screw rod to rotate, the screw rod rotates to drive the sliding block to move in the left-right direction, and the sliding block drives the rotating disc to rotate through the transmission arm; the bending process of the pipe fitting is as follows: when the first bending section is formed: fixing a roller in an adjusting groove at the front side of a wheel die holder, inserting a pipe fitting into a gap between the roller and the front side of the wheel die holder, determining the position of a first bending section, fixing the pipe fitting in front of the wheel die holder through a quick clamp, driving a rotary disc to rotate by a driving mechanism, driving the roller to move by the rotary disc, pushing the pipe fitting to bend towards the rear side along the arc surface at the left end of the wheel die holder by the roller, after a required bending angle is reached, reversely driving the rotary disc by the driving mechanism to reset the roller, opening the quick clamp, taking out the pipe fitting, and forming the first bending section and a first straight line section; when the second bending section is formed, the roller is fixed in an adjusting groove at the rear side of the wheel die holder, the unformed section is inserted into a gap between the roller and the rear side of the wheel die holder, the pipe fitting is rotated to enable the first straight line section to be placed in a required vertical direction, the pipe fitting is fixed at the rear side of the wheel die holder by using the quick clamp after the position of the second bending section is determined, the driving mechanism drives the rotary table to rotate, the rotary table drives the roller to move, the roller pushes the pipe fitting to enable the pipe fitting to be bent towards the front side along the arc surface at the left side of the wheel die holder, after the required bending angle is reached, the driving mechanism drives the rotary table reversely to drive the roller to reset, the quick clamp is opened, the pipe fitting is taken out, and the second bending section and the second straight line section are formed; when the third bending section is formed, the roller is moved to the front side of the wheel die base, the section which is not formed is inserted into a gap between the roller and the front side of the wheel die base, the pipe fitting is rotated to enable the first straight line section and the second straight line section to be placed according to requirements, the pipe fitting is fixed to the front side of the wheel die base by using the quick clamp after the position of the third bending section is determined, the driving mechanism drives the rotary table to rotate, the rotary table drives the roller to move, the roller pushes the pipe fitting to bend towards the rear side along the circular arc surface on the left side of the wheel die base, after the required bending angle is achieved, the driving mechanism reversely drives the rotary table, the rotary table drives the roller to reset, the quick clamp is opened, the pipe fitting is taken out, and the third bending section, the third straight line section and the fourth straight line section can be formed.

Preferably, the number of the transmission arms is two, the number of the sliding blocks is two, the threads on the screw rod are divided into two sections, the two sections of the threads on the screw rod are mutually reverse threads, the two sliding blocks are driven to be close to or away from each other when the screw rod rotates, and the two hinged positions of the two transmission arms and the two hinged positions of the rotary table are located on two sides of the rotating center of the roller. Thus, the process of bending the pipe fitting is more stable.

Preferably, the two hinges of the two transmission arms and the turntable are positioned below the adjusting groove. Thus, the stability of the pipe bending process is improved.

Preferably, the arc surface on the left side of the wheel die holder is inwards recessed to form a first forming groove, the front side surface and the rear side surface of the wheel die holder are inwards recessed to form fixing grooves, the two fixing grooves extend through the wheel die holder in the left-right direction, and the left ends of the two fixing grooves are respectively communicated with the left end and the right end of the first forming groove; when the pipe fitting is bent, the bending section is attached to the first forming groove; when the pipe fitting is fixed, the pipe fitting is clamped and fixed in the fixing groove rapidly. Therefore, the pipe fitting is ensured to be safely and stably fixed, and the bending precision is improved; meanwhile, the contact area between the pipe fitting and the wheel die seat is increased, and the pipe fitting is prevented from being deformed accidentally.

Preferably, an adjusting plate is fixedly mounted on the rotary table, the adjusting plate can be fixedly mounted in any one adjusting groove through a first locking screw, and the roller is rotatably mounted on the adjusting plate. Therefore, the position of the roller is convenient to adjust, and the roller is convenient to replace.

Preferably, a plurality of threaded holes are formed in each adjusting groove, and the adjusting plate can be fixed to different threaded holes through first locking screws. Therefore, the distance between the roller and the wheel die seat is convenient to adjust, and the bending precision is ensured.

Preferably, the equipment also comprises an indexing disc with an angle mark, the indexing disc is fixedly arranged on the workbench and is arc-shaped, and the rotating disc is positioned on the inner side of the indexing disc. Therefore, the bending angle of the pipe fitting can be accurately observed, and the bending precision of the pipe fitting is ensured.

The invention is different from the traditional technical scheme, and has the beneficial effects that:

can fix the pipe fitting in the front side or the rear side of wheel die holder through the quick clamp, can change the initial position of gyro wheel through the adjustment tank, drive through the lead screw, realize the just reversal of carousel on the one hand, realize a plurality of reversals of pipe fitting, the system of bending of multiple angle, the system angle of bending of the accurate control pipe fitting of pitch is passed through to on the other hand lead screw to the mode of hand lead screw is more laborsaving than pure manual return bend, and is safer.

Drawings

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

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

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

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

FIG. 5 is a schematic structural view of the manual pipe bending 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.

Example 1

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 installed on the working panel 11, the turntable 3 is rotatably installed 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 installed 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.

Example 2

The multi-direction multi-angle pipe bending method for bending the pipe 10 by using the multi-direction multi-angle pipe bending forming equipment comprises the following steps:

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 method of the pipe 10 is: 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 hand handle 24 drives the rotary table 3 to rotate anticlockwise through the screw rod 23, the feed nut 25, the guide rod 27 and the transmission arm 28, so that the roller 5 is reset, the quick clamp 6 is opened, the pipe fitting 10 which is bent for one time is taken out, the first straight line section 101 and the first bending section 102 are molded at the moment, and the first plane where the first straight line section 101, the first bending section 102 and the second straight line section 103 are located is determined according to the central lines of the first straight line section 101, the first bending section 102 and the second straight line section 103; as shown in fig. 3, when the pipe 10 is bent and formed 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 make the first straight line segment 101 point upward, the rest positions of the pipe 10 are inserted into the gap between the roller 5 and the rear side of the wheel mold seat 4, after the position of the second bending section 104 is determined, the pipe 10 is fixed by using the quick clamp 6, the rotary table 3 is driven to rotate clockwise, the rotary table 3 drives the roller 5 to move, the roller 5 pushes the pipe 10 to bend forward gradually along the left end of the wheel mold seat 4, after the bending requirement is met, the rotary table 3 is driven to rotate counterclockwise by the hand handle 24 and the rest components of the driving mechanism 2, the roller 5 is reset, the quick clamp 6 is opened, the pipe 10 bent for the second time is taken out, and at this time, the second straight line segment 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 member 10 is bent for the third time, the adjusting plate 32 and the roller 5 are removed from the current adjusting groove 31, and is mounted in the other adjusting groove 31, the remaining section of the pipe 10 is inserted into the gap between the die holder 4 and the roller 5, and 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 rotating disc 3 drives the roller 5 to move by rotating the hand handle 24 and then rotating the rotating disc 3 through the other components of the driving mechanism 2 anticlockwise, the roller 5 pushes the pipe fitting 10 to bend backwards from the left side of the wheel die holder 4, the rotating disc 3 is driven to rotate clockwise after the bending requirement is met, the roller 5 is reset, the quick clamp 6 is opened to take out the pipe fitting 10, and driving a third plane where the third straight line section 105, the third bending section 106 and the fourth straight line section 107 are located according to center lines of the three, so that the pipe 10 is bent and formed on the same equipment.

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.

Claims

1. The utility model provides a manual return bend forming method, includes workstation (1), gyro wheel (5) and wheel die holder (4), its characterized in that: the pipe fitting bending machine is characterized by further comprising a pipe fitting (10) to be bent, a rotary table (3), a driving mechanism (2) for driving the rotary table (3) to rotate and a plurality of quick clamps (6), the rotary table (3) is rotatably arranged above the workbench (1), the wheel die holder (4) is fixedly arranged above the rotary table (3), the rotary table (3) is provided with two adjusting grooves (31), the two adjusting grooves (31) are symmetrically arranged on the front side and the rear side of the wheel die holder (4), the idler wheel (5) is detachably fixed in any one adjusting groove (31), the plurality of quick clamps (6) can fix the pipe fitting (10) on the front side or the rear side of the wheel die holder (4), the left side surface of the wheel die holder (4) is an arc surface, and the rotary table (3) drives the idler wheel (5) to move around the axis of the arc surface on the left side of the wheel die holder (4) when rotating; the driving mechanism (2) comprises a handle (24), a screw rod (23), a sliding block (26) and a transmission arm (28), the handle (24) is fixed at the right end of the screw rod (23), the screw rod (23) is rotatably arranged above the workbench (1), the sliding block (26) is driven to move when the screw rod (23) rotates, one end of the transmission arm (28) is hinged on the sliding block (26), and the other end of the transmission arm (28) is hinged at the bottom of the turntable (3); the pipe fitting (10) comprises a first straight line section (101), a second straight line section (103), a third straight line section (105) and a fourth straight line section (107), the first straight line section (101) and the second straight line section (103) are connected through a first bent section (102), the second straight line section (103) and the third straight line section (105) are connected through the second bent section (102), the third straight line section (105) and the fourth straight line section (107) are connected through a third bent section (106), the first straight line section (101) is arranged in the vertical direction, the second straight line section (103) is located below the first straight line section (101) and points to the right side, the third straight line section (105) is located on the front side of the second straight line section (103) and points to the right side, and the fourth straight line section (107) is located on the front side of the third straight line section (105) and points to the right side; the process that the driving mechanism (2) drives the turntable (3) to rotate is as follows: the hand-operated handle (24) drives the screw rod (23) to rotate, the screw rod (23) rotates to drive the sliding block (26) to move in the left-right direction, and the sliding block (26) drives the turntable (3) to rotate through the transmission arm (28); the process of the pipe fitting (10) is as follows:

when the first bending section (102) is formed: fixing a roller (5) in an adjusting groove (31) in the front side of a roller die holder (4), inserting a pipe fitting (10) into a gap between the roller (5) and the front side of the roller die holder (4), determining the position of a first bending section (102), fixing the pipe fitting (10) in front of the roller die holder (4) through a quick clamp (6), driving a turntable (3) to rotate by a driving mechanism (2), driving the roller (5) to move by the turntable (3), pushing the pipe fitting (10) by the roller (5) to bend towards the rear side along the arc surface of the left end of the roller die holder (4), after a required bending angle is reached, reversely driving the turntable (3) by the driving mechanism (2) to reset the roller (5), opening the quick clamp (6), taking out the pipe fitting (10), and forming the first bending section (102) and the first straight line section (101);

when the second bending section (102) is formed, the roller (5) is fixed in the adjusting groove (31) at the rear side of the roller die holder (4), the unformed section of the pipe (10) is inserted into the gap between the roller (5) and the rear side of the roller die holder (4), the pipe (10) is rotated to enable the first straight line section (101) to be placed in the vertical direction as required, the pipe (10) is fixed at the rear side of the roller die holder (4) by using the quick clamp (6) after the position of the second bending section (102) is determined, the driving mechanism (2) drives the turntable (3) to rotate, the turntable (3) drives the roller (5) to move, the roller (5) pushes the pipe (10) to enable the pipe (10) to be bent towards the front side along the arc surface at the left side of the roller die holder (4), after the required bending angle is reached, the driving mechanism (2) reversely drives the turntable (3) to drive the roller (5) to reset, the quick clamp (6) is opened, and the pipe (10) is taken out, the second curved section (102) and the second straight section (103) are shaped;

when the third bending section (106) is formed, the roller (5) is moved to the front side of the roller die holder (4), the unformed section of the pipe (10) is inserted into a gap between the roller (5) and the front side of the roller die holder (4), the pipe (10) is rotated to enable the first straight line section (101) and the second straight line section (103) to be placed as required, the pipe (10) is fixed to the front side of the roller die holder (4) by using the quick clamp (6) after the position of the third bending section (106) is determined, the driving mechanism (2) drives the rotary disc (3) to rotate, the rotary disc (3) drives the roller (5) to move, the roller (5) is pushed by the roller (5) to bend towards the rear side along the arc surface on the left side of the roller die holder (4), the driving mechanism (2) reversely drives the rotary disc (3) after the required bending angle is achieved, the rotary disc (3) drives the roller (5) to reset, the quick clamp (6) is opened, the pipe (10) is taken out, the third bending section (106) is formed, The third straight line segment (105) and the fourth straight line segment (107) are shaped.

2. The manual pipe bending method according to claim 1, wherein: the number of the transmission arms (28) is two, the number of the sliding blocks (26) is two, the threads on the screw rod (23) are divided into two sections, the two sections of threads on the screw rod (23) are mutually reverse threads, the two sliding blocks (26) are driven to be close to or away from each other when the screw rod (23) rotates, and the two hinged positions of the two transmission arms (28) and the turntable (3) are positioned on two sides of the rotating center of the roller (5).

3. The manual pipe bending method according to claim 2, wherein: two hinged parts of the two transmission arms (28) and the rotary disc (3) are positioned below the adjusting groove (31).

4. A manual pipe bending method according to claim 3, wherein: the distance between the two hinged parts of the two transmission arms (28) and the turntable (3) is the same as the rotating center of the roller (5).

5. The manual pipe bending method according to claim 1, wherein: the arc surface on the left side of the wheel die holder (4) is inwards sunken to form a first forming groove (41), the front side surface and the rear side surface of the wheel die holder (4) are inwards sunken to form fixing grooves (42), the two fixing grooves (42) extend through the wheel die holder (4) in the left-right direction, and the left ends of the two fixing grooves (42) are respectively communicated with the left end and the right end of the first forming groove (41); when the pipe fitting (10) is bent, the bent section is attached to the first forming groove (41); when the pipe fitting is fixed, the pipe fitting (10) is fixed in the fixing groove (42) by the quick clamp (6).

6. The manual pipe bending method according to claim 1, wherein: an adjusting plate (32) is fixedly arranged on the rotary disc (3), the adjusting plate (32) can be fixedly arranged in any one adjusting groove (31) through a first locking screw, and the roller (5) is rotatably arranged on the adjusting plate (32).

7. The manual pipe bending method according to claim 6, wherein: a plurality of threaded holes (311) are formed in each adjusting groove (31), and the adjusting plate (32) can be fixed to different threaded holes (311) through first locking screws.

8. A manual elbow molding apparatus based on a manual elbow molding method according to any one of claims 1 to 7: the method is characterized in that: the equipment further comprises an index plate (35) with an angle mark, wherein the index plate (35) is fixedly installed on the workbench (1), the index plate (35) is arc-shaped, and the rotary plate (3) is located on the inner side of the index plate (35).