CN113458212B

CN113458212B - Manual pipe bending equipment and pipe bending method thereof

Info

Publication number: CN113458212B
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 Kingmasun Intelligent Manufacturing Co ltd
Current assignee: Zhejiang Kingmasun Intelligent Manufacturing Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2023-05-02
Anticipated expiration: 2041-07-30
Also published as: CN113458212A

Abstract

The invention discloses a manual pipe bending device and a pipe bending method thereof; the device comprises a workbench, rollers, a wheel die holder, 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 rotationally arranged above the workbench, the wheel 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 wheel die holder, the rollers are detachably fixed in any one of the adjusting grooves, the pipe fitting can be fixed on the front side or the rear side of the wheel die holder by the plurality of quick clamps, the left side surface of the wheel die holder is an arc surface, and the rollers move around the axis of the arc surface on the left side of the wheel die holder; the driving mechanism comprises a handle, a screw rod, a sliding block and a transmission arm, wherein 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, labor can be saved, and bending of the pipe fitting can be completed more accurately.

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

The bending of the pipe fitting is often used in the manufacturing and the assembly of the parts, but the manual pipe bending machine of various types at present has simple structure, but is time-consuming and labor-consuming mostly, and the precision cannot be ensured; moreover, the manual pipe bending machine can only bend the same pipe fitting in a single direction, and cannot bend the same pipe fitting in multiple angles in a three-dimensional way; when the manual pipe bending machine is used, sometimes, the bending angle of the pipe fitting is overlarge due to overlarge force, and other equipment is needed for shaping and repairing. The patent document with the publication number of CN 109158456A discloses a manual pipe bending machine convenient to operate, which comprises a bottom plate, wherein a fixed mold is arranged at the top of the center of the bottom plate, a squeezing screw is connected to the outer side of a first clamping plate far away from the bottom plate, a first adjusting handle is arranged at one end of the squeezing screw, a second clamping plate is arranged between the first clamping plate and the fixed mold, a fixed plate is arranged at one side of the second clamping plate close to the fixed mold, a connecting arm is arranged at the top of the fixed mold, a second adjusting handle is arranged at one end of the connecting arm, and a movable mold is arranged at the bottom of the connecting arm; in this patent place the return bend processing of bending after between first splint and second splint, between second splint and the fixed plate, play the effect of placing the return bend work piece of different crookedness respectively, can bend processing to two return bends simultaneously, through the effect of manual rotation first adjustment handle after, through extrusion screw rod, drive first splint and compress tightly to second splint department. In the bending process of the pipe fitting in the patent, the pipe fitting is bent purely by manpower, and the force is not amplified, so that the whole process is time-consuming and labor-consuming; moreover, as people cannot accurately judge the bending angle, the bending angle is extremely easy to be inaccurate in the bending process of the pipe fitting, and the work efficiency is low due to reworking; meanwhile, the movable mould is directly fixed on the connecting arm, and in the process of bending the pipe, the movable mould and the pipe fitting generate rigid friction, so that the deformation and even damage of the pipe fitting are easily caused.

Disclosure of Invention

In order to solve the problems, the invention aims to provide a manual pipe bending device with more accurate bending angle. Also provides a pipe bending method capable of manually bending the pipe at multiple angles and multiple directions.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the manual bent pipe forming method comprises a workbench, rollers, a wheel die holder, a pipe fitting to be bent, a rotary table, a driving mechanism for driving the rotary table to rotate, and a plurality of quick clamps, wherein the rotary table is rotationally arranged above the workbench, the wheel die holder is fixedly arranged above the rotary table, two adjusting grooves are formed in the rotary table, 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 fitting 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 rotary table rotates; the driving mechanism comprises a handle, a screw rod, a sliding block and a transmission arm, wherein 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 vertically arranged, 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 at the front side of the second straight line section and points to the right lower side, and the fourth straight line section is positioned at the front side of the third straight line section and points to the right side; the driving mechanism drives the turntable to rotate in the following process: the hand crank drives the screw rod to rotate, the screw rod rotates to drive the sliding block to move left and right, and the sliding block drives the turntable to rotate through the transmission arm; the bending process of the pipe fitting is as follows: the first bending section is formed: the method comprises the steps that a roller is fixed in an adjusting groove at the front side of a wheel die holder, a pipe fitting is inserted into a gap between the roller and the front side of the wheel die holder, the position of a first bending section is determined, the pipe fitting is fixed in front of the wheel die holder through a quick clamp, a driving mechanism drives a 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 an arc surface at the left end of the wheel die holder, after a required bending angle is reached, the driving mechanism drives the rotary table reversely to reset the roller, the quick clamp is opened, the pipe fitting is taken out, and the first bending section and a first straight line section are molded; 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 unshaped section is inserted between the roller and a gap at the rear side of the wheel die holder, the pipe fitting is rotated to enable the first straight line section to be placed in the required vertical direction, after the position of the second bending section is determined, the pipe fitting is fixed at the rear side of the wheel die holder by using a quick clamp, the driving mechanism drives the rotary table to rotate, the rotary table drives the roller to move, the roller pushes the pipe fitting, the pipe fitting is 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 reversely drives the rotary table to enable the roller to be driven 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 holder, the unshaped section is inserted between the roller and the gap of the front side of the wheel die holder, the pipe fitting is placed by rotating the pipe fitting according to requirements, the pipe fitting is fixed on the front side of the wheel die holder 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 arc surface of the left side of the wheel die holder, after the required bending angle is reached, 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 two transmission arms are arranged, the two sliding blocks are arranged, the screw thread on the screw rod is divided into two sections, the two sections of screw threads on the screw rod are mutually opposite screw threads, the two sliding blocks are driven to be mutually close to or mutually far away from each other when the screw rod rotates, and the two hinged positions of the two transmission arms and the turntable are positioned on two sides of the rotation center of the roller. In this way, the process of bending the pipe is more stable.

Preferably, the two joints 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 quickly clamped and fixed in the fixing groove. Thus, the safe and stable fixation of the pipe fitting is ensured, and the bending precision is improved; meanwhile, the contact area between the pipe fitting and the wheel die holder is increased, and the pipe fitting is prevented from being deformed accidentally.

Preferably, the rotary table is fixedly provided with an adjusting plate, the adjusting plate can be fixedly arranged in any adjusting groove through a first locking screw, and the roller is rotatably arranged 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 plates can be fixed at different threaded holes through first locking screws. Therefore, the distance between the roller and the wheel die holder is convenient to adjust, and bending precision is guaranteed.

Preferably, the device further comprises an index plate with an angle mark, wherein the index plate is fixedly arranged on the workbench, the index plate is arc-shaped, and the turntable is positioned on the inner side of the index plate. Therefore, the bending angle of the pipe fitting can be accurately observed, and the bending precision of the pipe fitting is ensured.

The invention has the beneficial effects of distinguishing the traditional technical scheme:

can fix the pipe fitting at the front side or the rear side of wheel die holder through quick clamp, can change the initial position of gyro wheel through the adjustment tank, drive through the lead screw, realize the positive and negative rotation of carousel on the one hand, realize a plurality of reverse of pipe fitting, the bending of multiple angle, on the other hand lead screw passes through the accurate control pipe fitting of pitch bending angle to hand lead screw's mode is more laborsaving than pure manual return bend, safer.

Drawings

FIG. 1 is a schematic illustration of a first process for bending a tube;

FIG. 2 is a second schematic illustration of a process of bending a tube;

FIG. 3 is a schematic diagram III of a process of bending a pipe;

FIG. 4 is a schematic diagram of a fourth process for bending a tube;

FIG. 5 is a schematic view of the manual bend 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 diagram of the connection of the wheel mold base, turntable and rollers;

FIG. 8 is a schematic view of the structure with the wheel mold base and rollers removed;

FIG. 9 is a schematic diagram of a driving mechanism;

FIG. 10 is a schematic view of a tube structure after bending;

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

Reference numerals: 1. a work table; 11. a work panel; 12. a support frame; 2. a driving mechanism; 21. a first bearing seat; 22. a second bearing seat; 23. a screw rod; 24. a handle; 25. a feed nut; 251. a linear bearing; 26. a slide block; 27. a guide rod; 28. a transmission arm; 281. a first hinge shaft; 282. a second hinge shaft; 29. a graphite copper sleeve; 3. a turntable; 31. an adjustment tank; 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. wheel mold base; 41. a first molding groove; 42. a fixing groove; 43. a mounting part; 44. a second positioning hole; 5. a roller; 6. a quick clamp; 8. a main shaft; 81. a connecting key; 82. a first lock nut; 83. a second lock nut; 84. a third lock nut; 85. a bearing clamp 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. and a fourth straight line segment.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

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

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Example 1

The multi-direction multi-angle pipe bending forming equipment comprises a workbench 1, rollers 5, a wheel die holder 4, a rotary table 3, a driving mechanism 2 for driving the rotary table 3 to rotate and a plurality of quick clamps 6 for clamping a pipe 10, wherein the pipe 10 is fixed 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 rotary table 3 is rotatably arranged above the workbench 1, the wheel die holder 4 is fixedly arranged above the workbench 1, the wheel die holder 4 is arranged above the rotary table 3, the rollers 5 are rotatably arranged above the rotary table 3, and the rotary table 3 drives the rollers 5 to rotate around the axis of the arc-shaped end of the wheel die holder 4. The working bar 1 comprises a working panel 11 and a supporting frame 12, wherein the supporting frame 11 is fixedly connected with a 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 recessed inwards is formed in the arc surface on the left side of the wheel die holder 4, and a notch of the cross section of the first forming groove 41 is arc-shaped; the front side surface and the rear side surface of the wheel die holder 4 are respectively provided with a fixed groove 42 formed by inwards sinking, the section gaps of the two fixed grooves 42 are arc-shaped, the section gaps of the first forming groove 41 and the section gaps of the fixed grooves 42 are the same, the two fixed grooves 42 extend in the left and right directions and penetrate through the wheel die holder 4, and the two fixed grooves 42 are respectively communicated with the front end and the rear end of the first forming groove 41; the front end face and the rear end face of the wheel die holder 4 are both provided with mounting portions 43 in a protruding mode, the mounting portions are located above the fixing grooves 42, and the plurality of quick members 6 are symmetrically and fixedly mounted on the tops of the two mounting portions 43 respectively. The outer circumferential surface of the roller 5 is provided with a second forming groove which is concave inwards, and the section gap of the second forming groove is the same as the section gap of the first forming groove 41.

Before the pipe is bent, 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 be referred to in patent documents such as a quick clamp head with publication number of CN204843937U and an adjustable quick clamp with publication number of CN 104625996A. In the embodiment, the quick clamp 6 comprises a clamping seat, a pressing handle, a connecting plate, a pressing plate and a pressing head, wherein the clamping seat is fixed at the top of the installation part, the pressing handle is hinged on the clamping 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 down so that the pressing plate drives the pressing head to press the pipe fitting 10 between the wheel die holder 4 and the pressing head, and meanwhile, the angle of the pressing plate is locked by the connecting plate; after the forming, 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. 5-8, the apparatus further includes a spindle 8, the bottom of the spindle 8 is fixedly mounted on the working panel 11, the turntable 3 is rotatably mounted on the spindle 8, the turntable 3 coincides with the axis of the spindle 8, the spindle 8 is coaxial with the circular arc surface on the left side of the wheel mold base 4, the wheel mold base 4 is fixedly mounted on the spindle 8, and the turntable 3 is located below the wheel mold base 4. The main shaft 8 is a step shaft, the diameter of the middle part of the main shaft 8 is larger than that of the upper end and the lower end, the main shaft 8 is provided with three shaft shoulders, connecting keys 81 are fixedly connected to the sections on the upper side and the lower side of the main shaft 8, and a first positioning hole in a convex shape 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 passes through the first positioning hole, the connecting key 81 positioned at the lower side is inserted into the first positioning hole, the shaft shoulder positioned at 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 in threaded connection with the main shaft 8, and the first lock nut 82 is screwed from bottom to top to fix the main shaft 8 on the working panel 11. And the rotary disk 3 is rotatably installed: the turntable 3 is rotationally connected with the main shaft 8 through a first bearing 86, the first bearing 86 is arranged at a shaft shoulder of the main shaft 8 in the middle, the shaft shoulder of the main shaft 8 is propped against the bottom of an inner ring of the first bearing 86, a bearing compression ring 85 is sleeved on the main shaft 8, a third lock nut 84 is connected onto the main shaft 8 in a threaded manner, the bearing compression ring 85 is positioned between the turntable 3 and the third lock nut 84, and the bearing compression ring 85 is used for limiting axial movement of the turntable 3.

The fixed mounting of the wheel die holder 4: the wheel die holder 4 is provided with a second positioning hole 44, 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 and communicated with the through hole, and the top section of the main shaft 8 is in threaded connection with a second locking nut 83; the wheel die holder 4 is fixedly arranged on the main shaft 8 through a second lock 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 passes through a through hole of the second positioning hole 44, the connecting key 81 fixed on the upper section of the main shaft 8 is inserted into a key slot 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; the top section of the main shaft 8 is provided with a second lock nut 83, the second lock nut 83 is in threaded connection with the main shaft 8, and the second lock nut 83 is located on the upper side of the wheel die holder 4, so that the wheel die holder 4 is fixed on the main shaft 8 through the second lock nut 83. Through the structure of the nut, the connecting key 81 and the like, the disassembly and the maintenance of the equipment and the replacement of parts are convenient; the method of replacing the wheel die holder 4 is suitable for processing pipe fittings 10 with various specifications. The axis of the main shaft 8 and the axis of the circular arc surface at the left end of the wheel holder 4 overlap. The bottom of the wheel die holder 4 is provided with a key slot, the key slot is communicated with the second positioning hole 44, the section with the connecting key 81 at the upper side of the main shaft 8 is inserted into and passes through the second positioning hole 44, the connecting key 81 at the upper side is inserted into the key slot, and the top of the connecting key 81 is abutted against the top of the key slot, so that the wheel die holder 4 is supported on the main shaft 8 and the main shaft 8 is limited to rotate; the top of the main shaft 8 is connected with a second lock nut 83 in a threaded manner, and the top of the wheel die holder 4 is pressed by rotating the second lock nut 83, so that the wheel die holder 4 is fixed on the main shaft 8. So arranged, the radial movement of the wheel die holder 4 is limited by the main shaft 8, the axial movement of the wheel die holder 4 is limited by the connecting key 81 and the second locking nut 83, and the rotation of the wheel die holder 4 is limited by the connecting piece; meanwhile, through the structures of the nut, the connecting key 81 and the like, the disassembly and the maintenance of the equipment and the replacement of parts are convenient; the method of replacing the wheel die holder 4 is suitable for processing pipe fittings 10 with various calibers. The wheel die holder 4 is fixedly arranged on the main shaft 8, and the axis of the main shaft 8 is coincident with the axis of the circular arc surface on the left side of the wheel die holder 4. The equipment structure is simplified by the arrangement, so that the equipment is installed and is more convenient to process.

In this embodiment, two adjusting grooves 31 are formed at the top of the turntable 3, the two adjusting grooves 31 are symmetrically arranged, the device further comprises 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 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; the adjusting plate 32 is provided with a limiting hole 321, the limiting hole 321 is a step 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 a threaded hole 311 on the turntable 3, and when the adjusting plate is locked, only the head part of the first locking screw is required to be abutted against the step surface of the limiting hole 321, so that the position of the adjusting plate 32 is fixed; before the adjusting plate 32 is thoroughly 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 range of movement of the adjustment plate 32 is approximately the length of the limiting aperture 321; further, there are two limiting holes 321, the adjusting plate 32 is fixed on the turntable 3 through two first locking screws, and the roller shaft 33 is located between the two limiting holes 321. The roller 5 is installed: the roller 5 is rotatably arranged on a 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 countersunk hole, the countersunk hole penetrates through the adjusting plate 32 from bottom to top, and the second locking screw 88 penetrates through the countersunk hole from bottom to top and is in threaded connection with the roller shaft 33; the roller shaft 33 is a stepped shaft, the bottom diameter of the roller shaft 33 is larger, the roller 5 is rotatably arranged 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 in threaded connection with a third locking screw 34, a gland 36 is sleeved on the threaded section of the third locking screw 34, the gland 36 is abutted against the inner ring of the second bearing 87 positioned at the upper side, when 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 arranged on the roller shaft 33,

in this 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 a positive and negative tooth lead screw, the lead screw 23 rotates and sets up in work panel 11 top, and the lead screw 23 is used for driving two sliders 26 left and right directions to remove, but the direction of movement of two sliders 26 is opposite, and the same end of two drive arms 28 articulates respectively at the top of two sliders 26 through two second articulated shafts 282, and the other end of two drive arms 28 articulates in the bottom of carousel 3 through two first articulated shafts 281, and two first articulated shafts 281 are located the adjustment tank 31 below respectively with carousel 3 articulated position, and the distance between two first articulated shafts 281 and the main shaft 8 is the same. The device further comprises a first bearing seat 21, a second bearing seat 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 arranged on the top end surface of the working panel 11, the first bearing seat 21 is positioned on the left side of the second bearing seat 22, graphite copper sleeves 29 are arranged on the first bearing seat 21 and the second bearing seat 22, a lead screw 23 is rotatably arranged on the first bearing seat 21 and the second bearing seat 22 through two graphite, two graphite copper sleeves 29 are respectively arranged on the first bearing seat 21 and the second bearing seat 22, the lead screw 23 extends rightward to pass through the second bearing seat 22, and a handle 24 is fixedly arranged at the right end of the lead screw 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 opposite threads; the two feed nuts 25 are respectively arranged on the two sections of threads of the screw rod 23, so that the two feed nuts 25 are arranged in the left-right direction; the two guide rods 27 are respectively arranged on the front side and the rear side of the screw rod 23, the right end of the guide rod 27 positioned at the rear side is fixed on the feed nut 25 positioned at the right side, the guide rod 27 positioned at the rear side extends leftwards to penetrate through the feed nut 25 positioned at the left side, the guide rod 27 positioned at the rear side is in sliding connection with the feed nut positioned at the left side through one of the linear bearings 251, the left end of the guide rod 27 positioned at the front side is fixedly connected with the feed nut 25 positioned at the left side, the guide rod 27 positioned at the front side extends rightwards to penetrate through the feed nut 25 positioned at the right side, and the guide rod 27 positioned at the front side is in sliding connection with the feed nut 25 positioned at the right side through the other linear bearing 251. Two slide blocks 26 are located between the two feed nuts 25, and the two slide blocks 26 are fixed to two guide bars 27, respectively. Further, both the driving arms 28 are bent arms, so that the rotation angle of the turntable 3 can be increased. When the turntable 3 is driven to rotate: the hand handle 24 drives the screw rod 23 to rotate, the screw rod 23 rotates to drive the two feed nuts 25 to approach or separate from each other, the two feed nuts 25 respectively drive the two sliding blocks 26 to move 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 hinging rod 281; when the two feed nuts 25 are brought close to each other, the apparatus is viewed from above, and the turntable 3 rotates forward; when the two feed nuts 25 are distanced from each other, the apparatus is viewed from the top, and the turntable 3 is reversed.

In this embodiment, the rotary table further comprises an index plate 35 with angle marks, the index plate 35 is arc-shaped, and the rotary table 3 is positioned on the inner side of the index plate 35. The dividing disc 35 is equal in height to the rotary disc 3.

Example 2

A multi-directional and multi-angle pipe bending method for bending pipe 10 by using the multi-directional and multi-angle pipe bending forming equipment comprises the following steps:

in daily life work, bent pipes with multiple directions and multiple bending angles are frequently seen, and a plurality of planes are occasionally parallel to each other between planes where the bent pipes are bent, but a certain included angle is formed between most of the planes. In the present embodiment, as shown in fig. 10, the pipe 10 after bending 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 segment 101 is vertically erected, the bottom of the first straight line segment 101 is connected with the second straight line segment 103 through a first bending segment 102, the second straight line segment 103 points to the right, the other end of the second straight line segment 103 is connected with a third straight line 105 segment through a second bending segment 104, the third straight line 105 segment points to the right front, the other end of the third straight line 105 segment is connected with a fourth straight line segment 107 through a third bending segment 106, and the fourth straight line segment 107 points to the right; wherein the same plane where the central lines of the first straight line segment 101, the first bending segment 102 and the second straight line segment 103 are positioned is a first plane; the same plane where the central lines of the second straight line segment 103, the second curved segment 104 and the third straight line segment 105 are positioned is a second plane, and the same plane where the central lines of the third straight line segment 105, the third curved segment 106 and the fourth straight line segment 107 are positioned 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 fitting 10 of the present embodiment as an example, the bending forming method of the pipe fitting 10 is as follows: as shown in fig. 1 and 2, when the pipe 10 is subjected to the first bending forming, the pipe 10 is inserted between the roller 5 and the wheel die holder 4, after the bending position of the pipe 10 is determined, the pipe 10 is fixed on the wheel die holder 4 by using the quick clamp 6; the rotary table 3 is driven to rotate clockwise through the driving mechanism 2, the rotary table 3 rotates to drive the roller 5 to move around the main shaft 8, and the roller 5 pushes the pipe fitting 10 when moving, so that the pipe fitting 10 bends backwards along the left end of the wheel die holder 4, and further the pipe fitting 10 completes the first bending; when the bending angle is reached, the hand crank 24 drives the turntable 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 to take out the pipe fitting 10 which is subjected to primary bending, at the moment, the first straight line segment 101 and the first bending segment 102 are molded, and the first plane where the first straight line segment 101, the first bending segment 102 and the second straight line segment 103 are positioned is determined according to the central 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 and formed for the second time, the adjusting plate 32 is removed from the current adjusting groove 31, the adjusting plate 32 and the roller 5 are installed in the other adjusting groove 31, the pipe 10 is rotated to enable the first straight line segment 101 to point upwards, the rest positions of the pipe 10 are inserted into gaps at the rear sides of the roller 5 and the wheel die holder 4, after the positions of the second bending segments 104 are determined, the pipe 10 is fixed by using the quick clamp 6, the rotating disc 3 is driven to rotate clockwise, the roller 5 is driven to move by the rotating disc 3, the roller 5 pushes the pipe 10 to gradually bend forwards along the left end of the wheel die holder 4, after the bending requirement is met, the rotating disc 3 is driven to rotate anticlockwise by the hand handle 24 and further through other components of the driving mechanism 2, the roller 5 is reset, the quick clamp 6 is opened, the pipe 10 after the second bending is taken out, and the second straight line segment 103 and the second flat surface where the second straight line segment 103 and the second bending segment 104 are located are determined according to the center lines of the second straight line segment 103, the second bending segment 104 and the third straight line segment 105; 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 installed in the other adjusting groove 31, the rest section of the pipe 10 is inserted into the gap between the wheel 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 wheel die holder 4 by using the quick clamp 6, the handle 24 is rotated anticlockwise by the rest component turntable 3 of the driving mechanism 2, the turntable 3 drives the roller 5 to move, the roller 5 pushes the pipe 10 to bend backwards from the left side of the wheel die holder 4, the turntable 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 10, and the third plane where the pipe 10 is positioned is driven according to the central lines of the third straight line section 105, the third bending section 106 and the fourth straight line section 107, and the pipe 10 is formed in a bending mode on the same equipment.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the invention.

Claims

1. The manual bent pipe forming method comprises a workbench (1), rollers (5) and a wheel die holder (4) and is characterized in that: the bending machine further comprises 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), wherein the rotary table (3) is rotationally arranged above the workbench (1), the rotary table (4) is fixedly arranged above the rotary table (3), two adjusting grooves (31) are formed in the rotary table (3), the two adjusting grooves (31) are symmetrically formed in the front side and the rear side of the rotary table (4), the idler wheel (5) is detachably fixed in any one of the adjusting grooves (31), the plurality of quick clamps (6) fix the pipe fitting (10) on the front side or the rear side of the rotary table (4), the left side surface of the rotary table (4) is an arc surface, and the idler wheel (5) is driven to move around the axis of the arc surface on the left side of the rotary table (4) when the rotary table (3) rotates; the driving mechanism (2) comprises a handle (24), a screw rod (23), a sliding block (26) and a transmission arm (28), wherein 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 to the sliding block (26), and the other end of the transmission arm (28) is hinged to 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), wherein the first straight line section (101) and the second straight line section (103) are connected through a first bending section (102), the second straight line section (103) and the third straight line section (105) are connected through a second bending section (104), the third straight line section (105) and the fourth straight line section (107) are connected through a third bending section (106), the first straight line section (101) is vertically arranged, 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 below, 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 driving mechanism (2) drives the turntable (3) to rotate, and the process is as follows: the hand handle (24) drives the screw rod (23) to rotate, the screw rod (23) rotates to drive the sliding block (26) to move left and right, and the sliding block (26) drives the turntable (3) to rotate through the transmission arm (28); the process of the pipe fitting (10) elbow is as follows:

when the first bending section (102) is formed: the method comprises the steps that a roller (5) is fixed in an adjusting groove (31) on the front side of a wheel die holder (4), a pipe fitting (10) is inserted into a gap between the roller (5) and the front side of the wheel die holder (4), the position of a first bending section (102) is determined, the pipe fitting (10) is fixed in front of the wheel die holder (4) through a quick clamp (6), a driving mechanism (2) drives a rotary table (3) to rotate, the rotary table (3) drives the roller (5) to move, the roller (5) pushes the pipe fitting (10) to bend towards the rear side along the arc surface of the left end of the wheel die holder (4), after a required bending angle is achieved, the driving mechanism (2) drives the rotary table (3) reversely to reset the roller (5), the quick clamp (6) is opened, the pipe fitting (10) is taken out, and the first bending section (102) and a first straight line section (101) are formed;

when the second bending section (104) is formed, the roller (5) is fixed in the adjusting groove (31) at the rear side of the wheel die holder (4), an unshaped section of the pipe fitting (10) is inserted between the roller (5) and a gap at the rear side of the wheel die holder (4), the pipe fitting (10) is rotated to enable the first straight line section (101) to be placed in a required vertical direction, the pipe fitting (10) is fixed at the rear side of the wheel die holder (4) by using the quick clamp (6) after the position of the second bending section (104) 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 fitting (10) to enable the pipe fitting (10) to bend towards the front side along the arc surface at the left side of the wheel die holder (4), after the required bending angle is reached, the driving mechanism (2) reversely drives the roller (3) to reset, the quick clamp (6) is opened, the pipe fitting (10) is taken out, and the second straight line section (104) and the second straight line section (103) are formed;

when the third bending section (106) is formed, the roller (5) is moved to the front side of the wheel die holder (4), an unshaped section of the pipe fitting (10) is inserted between the roller (5) and a gap at the front side of the wheel die holder (4), the pipe fitting (10) is rotated to enable the first straight line section (101) and the second straight line section (103) to be placed according to requirements, the pipe fitting (10) is fixed at the front side of the wheel 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 turntable (3) to rotate, the turntable (3) drives the roller (5) to move, the roller (5) pushes the pipe fitting (10) to bend towards the rear side along an arc surface at the left side of the wheel die holder (4), after the required bending angle is achieved, the driving mechanism (2) reversely drives the turntable (3), the roller (5) to reset, the quick clamp (6) is opened, the pipe fitting (10) is taken out, and the third bending section (106), the third straight line section (105) and the fourth straight line section (107) are formed.

2. A method of manually bending a tube according to claim 1, wherein: the two transmission arms (28) are arranged, the two sliding blocks (26) are arranged, the screw thread on the screw rod (23) is divided into two sections, the two sections of screw threads on the screw rod (23) are mutually opposite screw threads, the two sliding blocks (26) are driven to be mutually close to or mutually far away from each other when the screw rod (23) rotates, and two hinged positions of the two transmission arms (28) and the turntable (3) are positioned on two sides of the rotation center of the roller (5).

3. A method of manually bending a tube according to claim 2, wherein: two hinged positions of the two transmission arms (28) and the turntable (3) are positioned below the adjusting groove (31).

4. A method of manually operated bend forming as claimed in claim 3, wherein: the two transmission arms (28) and the two hinged positions of the turntable (3) are the same with the rotation center of the roller (5).

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

6. A method of manually bending a tube according to claim 1, wherein: the rotary table (3) is fixedly provided with an adjusting plate (32), the adjusting plate (32) is fixedly arranged in any adjusting groove (31) through a first locking screw, and the roller (5) is rotatably arranged on the adjusting plate (32).

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

8. A manual pipe bending apparatus based on a manual pipe bending method as defined in any one of claims 1 to 7: the method is characterized in that: the device also comprises an index plate (35) with an angle mark, wherein the index plate (35) is fixedly arranged on the workbench (1), the index plate (35) is arc-shaped, and the rotary plate (3) is positioned at the inner side of the index plate (35).