CN114951379A

CN114951379A - Hardware processing is with equipment of bending

Info

Publication number: CN114951379A
Application number: CN202210913207.2A
Authority: CN
Inventors: 徐玉喜; 邓芳
Original assignee: Jiangsu Shunlu Electromechanical Co ltd
Current assignee: Jiangsu Shunlu Electromechanical Co ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2022-08-30

Abstract

The invention relates to the technical field of metal plate bending and forming, in particular to bending equipment for hardware processing. The utility model provides a hardware processing is with equipment of bending is used for bending tubular metal resonator, includes workstation, supporting component and bending mechanism and adjustment mechanism. The bending mechanism comprises a chassis, a limiting wheel and a bending assembly, and the bending assembly comprises a supporting column and a clamping wheel. The metal pipe bending equipment for hardware processing realizes bending of the metal pipe by utilizing rotation of the chassis and the clamping wheels, the metal pipe penetrates through gaps between the clamping wheels and the support columns during bending, and the metal pipe abuts against the clamping wheels and at least one support column, so that the metal pipe is bent under the action of the support columns and the clamping wheels during rotation of the chassis. Through setting up adjustment mechanism, adjust the radius of the reference circle at the axis place of a plurality of support columns, and then adjust the camber size that the tubular metal resonator buckles. The bending of the metal pipe that the adaptation different bending degree required is organized altogether, and application scope is wide.

Description

Hardware processing is with equipment of bending

Technical Field

The invention relates to the technical field of metal plate bending and forming, in particular to a bending device for hardware processing.

Background

The bending device is applied to many fields, for example, in the automobile industry, a large number of metal pipes are required to be manufactured into metal bent pipes with a plurality of bending angles and bending directions by using the bending device, and the metal bent pipes are used for manufacturing hydraulic pipes or pneumatic pipes, particularly pipes in automobile braking systems and air conditioning systems, and the precision requirement on the pipe bending is high. A conventional pipe bending machine generally includes a clamping jaw for clamping a straight pipe, a bending die disposed in a bending direction, and a pressing device for pressing a pipe against the bending die, and the pipe is pressed against a profile of the bending die by the pressing device and rotated, so as to complete bending of the pipe.

If the chinese patent with the publication number of grant CN104858272B, a pipe bending machine is disclosed, which can realize the change and switching by installing bending dies of different sizes, and can send the workpiece into different bending dies to change the radian of the bending part during processing, and can not adjust the bending radian at will, and install the bending dies of different sizes to make the device structure large, and can not adjust at will the outside diameter of the die of the bending part of the pipe fitting, different dies need to be replaced for the workpieces of different radians of the bending angle, the application range is small, and the requirements of people can not be met.

Disclosure of Invention

The invention provides a bending device for hardware processing, which aims to solve the problem that the bending camber cannot be adjusted by the conventional bending device.

The invention relates to a bending device for hardware processing, which adopts the following technical scheme:

a bending device for hardware processing is used for bending a metal pipe and comprises a workbench, a supporting assembly, a bending mechanism and an adjusting mechanism. The workbench is fixedly arranged, and the support assembly is used for keeping the axis of the metal tube at the same position in a disposal state. The bending mechanism comprises a chassis, a limiting wheel and a bending assembly, the chassis is arranged on the workbench, the axis of the chassis is in the vertical direction, a driving shaft penetrates through the center of the chassis, the driving shaft is rotatably arranged around the axis of the driving shaft, and the driving shaft drives the chassis to synchronously rotate when rotating; the bending assembly comprises a plurality of supporting columns and clamping wheels, the supporting columns form an arc-shaped resisting surface, every two adjacent supporting columns are sleeved through a sleeving ring, the connecting line of the axes of the supporting columns in the horizontal direction is located on a reference circle, and the center of the reference circle is located on the axis of the chassis; when the chassis rotates, the supporting columns are driven to rotate synchronously. The clamping wheels are arranged on one sides, far away from the axle center of the chassis, of the supporting columns, the chassis drives the clamping wheels to synchronously rotate around the axle center of the chassis when rotating, the metal pipe penetrates through gaps between the clamping wheels and the supporting columns when being bent, and the metal pipe is abutted against the clamping wheels and the at least one supporting column so as to be bent under the action of the supporting columns and the clamping wheels when the chassis rotates. The adjusting mechanism is used for adjusting the radius of a reference circle where the axes of the supporting columns are located, and further adjusting the bending curvature of the metal pipe.

Further, the adjusting mechanism comprises a rotating sleeve, a first rotating ring, a first hinge rod, a synchronizing assembly and an adjusting assembly; the rotating sleeve is sleeved on the outer side of the driving shaft and is in spiral transmission fit with the driving shaft; the first rotating ring is sleeved on the outer side of the rotating sleeve, the first rotating ring and the rotating sleeve move synchronously in the vertical direction and rotate synchronously along with the driving shaft, a plurality of first hinge rods are arranged, one end of each first hinge rod is hinged to the rotating ring, and the other end of each first hinge rod is hinged to the supporting column; the synchronizing assembly includes a first detent and a second detent; the first clamping stop part is fixedly arranged on the driving shaft; the second clamping part is fixedly arranged on the outer side of the drum sleeve ring, and the first clamping part and the second clamping part are abutted in the circumferential direction of the driving shaft in an initial state so as to transmit the rotation of the driving shaft to the rotating sleeve; the adjusting assembly is used for enabling the second clamping parts to be separated from each other, the driving chassis moves in the direction perpendicular to the metal pipe and drives the rotating sleeve to rotate relative to the driving shaft, the rotating sleeve further moves downwards in the axial direction of the driving shaft when rotating, and then the distance of the rotating ring relative to the chassis is reduced, so that the curvature radius of a reference circle where the supporting columns are located is increased, and at least one supporting column abuts against the metal pipe.

Furthermore, a thread groove is formed in the outer peripheral wall of the driving shaft, a sliding block is arranged on the inner peripheral wall of the rotating sleeve, and the sliding block is inserted into the thread groove and is slidably arranged in the thread groove; the adjusting assembly comprises a moving plate, a first gear, a first driving part, a second gear and an operating handle. The workbench is provided with a horizontal sliding groove, the movable plate is horizontally arranged and can be slidably arranged along the sliding groove, and the chassis is fixedly arranged on the movable plate; the movable plate is provided with a mounting groove, the first gear is positioned in the mounting groove and can be rotationally arranged around the axis of the first gear, a rack is arranged on the groove wall on one side of the sliding groove, and the first gear is meshed with the rack. The second gear is fixedly sleeved outside the rotating sleeve; the operating handle is horizontally arranged, one end of the operating handle is in sliding fit with the second gear in the circumferential direction of the second gear, and the operating handle drives the rotating sleeve to synchronously move up and down when moving up and down. When the operating handle moves upwards, the second gear is driven to rise to be meshed with the first gear. The first driving part is used for driving the moving plate to move along the sliding groove in the direction perpendicular to the metal pipe after the second gear is meshed with the first gear.

Furthermore, the bending equipment for hardware processing also comprises a stabilizing assembly, wherein the stabilizing assembly comprises a second rotating ring, a pushing plate and a second hinge rod; the second rotating ring is rotatably sleeved on the rotating sleeve and is positioned below the first rotating ring, and the second rotating ring synchronously rotates along with the rotating sleeve and is arranged in a vertical direction in a manner of being relatively slidable with the rotating sleeve; the quantity of push pedal has a plurality ofly, and a plurality of push pedals loop through the expansion plate and connect and enclose into a closed loop, and the closed loop sets up with the rotation sleeve is coaxial, the inboard of support column offsets with the outside of closed loop, and the second hinge bar has a plurality ofly, and the inner of every second hinge bar articulates in the second swivel, and the outer end articulates in push pedal, along rotating telescopic rotation direction, the outer end of second hinge bar is in the front side that the second hinge bar is inner to make at least partly of closed loop offset with the inboard of support column when the second rotates along with rotating the sleeve rotation.

Furthermore, the bending equipment for hardware processing further comprises a connecting column, a connecting rod and a screw rod; spliced pole fixed mounting is on the chassis, and with chassis eccentric settings, the connecting rod level sets up, and the one end fixed connection of connecting rod is in the drive shaft, and other end fixed connection is in the connecting rod, is provided with the screw hole on the connecting rod, and threaded hole interpolation is equipped with the screw rod, is provided with on the screw rod with screw hole screw drive complex screw thread arch, and the one end fixed mounting of screw rod has vertical locating lever, the tight pulley rotationally overlaps on locating lever, and the tight pulley sets up along the radial direction slidable on chassis, and a pot head of screw rod is equipped with the hand wheel, and the hand wheel rotationally installs on the connecting rod, hand wheel and screw rod screw drive cooperation for the hand wheel drives the screw rod and removes along the radial direction on chassis when rotating, makes tight pulley offset with the tubular metal resonator.

Furthermore, the first driving part is a hydraulic cylinder which is arranged on the workbench, and a piston rod of the hydraulic cylinder penetrates through the workbench and is fixedly connected with the movable plate; hardware processing is with equipment of bending still includes the second drive division, and the second drive division is the motor, and the motor is used for the drive shaft to rotate.

Further, the support assembly includes a central plate and two positioning members; the central plate is vertically arranged, the lower end of the central plate is fixedly arranged on the workbench, and a through hole is formed in the middle of the central plate. The two positioning pieces are respectively arranged on two sides of the central plate, each positioning piece comprises a top rod and a top plate, the top rods penetrate through the central plate and extend along the radial direction of the through hole, the inner ends of the top rods extend into the through hole, the two top rods are both in the horizontal direction, limiting blocks are arranged at the opposite ends of the two top rods, each limiting block is provided with an arc-shaped groove, the two arc-shaped grooves are oppositely arranged, and the central angle of each arc-shaped groove is larger than 90 degrees and smaller than 180 degrees; the top plate is fixedly arranged at the outer end of the ejector rod, and the top plate is connected with the central plate through a spring; the outer contour of the clamping wheel is in a dumbbell shape with the thickness gradually becoming from the middle to the two ends, and the middle of the clamping wheel and the circle center of the arc-shaped groove are in the same horizontal straight line.

Furthermore, hardware processing is with equipment of bending still includes the auxiliary wheel, and the axis of auxiliary wheel is in vertical direction, and the auxiliary wheel is rotationally installed in the workstation around self axis, and the auxiliary wheel is in the same one side of tubular metal resonator with the pinch roller, and keeps contacting with the tubular metal resonator.

Furthermore, a dial is arranged on the upper surface of the chassis, and the radius of curvature is displayed on the dial; the chassis is provided with a plurality of limiting grooves around the axis direction of the chassis, each limiting groove extends along the radial direction of the chassis, the lower end of each pushing plate is provided with a limiting slide block, and each limiting slide block is positioned in one limiting groove and can be arranged along the limiting groove in a sliding mode.

Furthermore, the middle part of the upper end of each supporting column is fixedly provided with a connector the diameter of which is smaller than that of the supporting column, the sleeving ring sleeves two adjacent connectors, and the sleeving ring sleeves two adjacent supporting columns contact with each other when the sleeving ring sleeves two adjacent connectors.

The invention has the beneficial effects that: the metal pipe bending equipment for hardware processing realizes bending of the metal pipe by utilizing rotation of the chassis and the clamping wheels, the metal pipe penetrates through gaps between the clamping wheels and the support columns during bending, and the metal pipe abuts against the clamping wheels and at least one support column, so that the metal pipe is bent under the action of the support columns and the clamping wheels during rotation of the chassis. Through setting up adjustment mechanism, adjust the radius of the reference circle at the axis place of a plurality of support columns, and then adjust the camber size that the tubular metal resonator buckles. The bending of the metal pipe that the adaptation different bending degree required is organized altogether, and application scope is wide.

The positions of two adjacent supporting columns are limited by the aid of the sleeving rings, the supporting columns are close to or far away from the driving shaft, the axes of the supporting columns are always located on a reference circle, and the metal pipe bending precision is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of a bending apparatus for hardware processing according to the present invention;

FIG. 2 is a schematic structural diagram of a removing and bending mechanism and an adjusting mechanism of an embodiment of the bending device for hardware processing according to the invention;

FIG. 3 is a schematic structural diagram of a bending mechanism and an adjusting mechanism of an embodiment of the bending device for hardware processing according to the present invention;

FIG. 4 is a half-sectional view of an embodiment of a bending apparatus for hardware processing of the present invention;

FIG. 5 is a schematic structural diagram of a moving plate and a first driving part of an embodiment of a bending device for hardware processing according to the present invention;

FIG. 6 is a partial cross-sectional view of FIG. 5;

FIG. 7 is a schematic structural diagram of a chassis of an embodiment of a bending apparatus for hardware processing according to the present invention;

FIG. 8 is a structural matching diagram of a clamping wheel and a hand wheel of the embodiment of the bending equipment for hardware processing;

FIG. 9 is a schematic structural diagram of a bending mechanism of an embodiment of the bending apparatus for hardware processing according to the present invention;

fig. 10 is a plan view of an operating state in which a bending mechanism of an embodiment of the bending apparatus for hardware processing according to the present invention bends a metal pipe;

fig. 11 is a top view of a bending mechanism of an embodiment of a bending apparatus for hardware processing according to the present invention, in which a reference circle on which an axis of a support column is located has an increased radius.

In the figure: 100. a work table; 200. a bending mechanism; 300. a metal tube; 103. an auxiliary wheel; 104. a rack; 105. a chute; 106. a jack; 211. a pinch wheel; 212. a screw; 213. a drive shaft; 214. a hand wheel; 215. connecting columns; 216. a first locking part; 217. a connecting rod; 218. a second locking part; 221. a sleeving connection ring; 222. a support column; 223. a first hinge lever; 225. pushing the plate; 226. a second hinge lever; 227. a retractable plate; 228. a second swivel; 229. a first swivel; 2210. a telescopic rod; 231. moving the plate; 232. rotating the sleeve; 233. a piston rod; 234. mounting a plate; 235. a hydraulic cylinder; 236. a first gear; 237. a second gear; 238. an operating handle; 239. assembling a ring; 240. a chassis; 241. a dial scale; 242. a limiting groove; 400. a support assembly; 401. a center plate; 402. a top rod; 403. a top plate; 500. an electric motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of a bending apparatus for hardware processing according to the present invention, as shown in fig. 1 to 11, is a bending apparatus for hardware processing, which is used for bending a metal pipe 300, and includes a table 100, a support assembly 400, a bending mechanism 200, and an adjusting mechanism. The table 100 is horizontally disposed, the table 100 is fixedly installed on the ground by a plurality of support legs, and the support assembly 400 is used to keep the axis of the metal pipe 300 at the same position in the treatment state.

Bending mechanism 200 includes chassis 240 and the subassembly of bending, and chassis 240 sets up on workstation 100, and the axis of chassis 240 is in vertical direction, and drive shaft 213 has run through in the center department of chassis 240, and drive shaft 213 is around self axis rotationally setting, drives chassis 240 synchronous rotation when drive shaft 213 rotates. The bending assembly includes a support column 222 and a clamping wheel 211. The plurality of support columns 222 form an arc-shaped abutment surface, and the outer side wall of the arc-shaped abutment surface is used for abutting against the support columns 222. Every two adjacent support columns 222 are sleeved through a sleeving ring 221, specifically, a connector with a diameter smaller than that of each support column 222 is fixedly installed in the middle of the upper end of each support column 222, the sleeving ring 221 is sleeved on the two adjacent sleeving heads, and the two adjacent support columns 222 are in contact when the sleeving ring 221 is sleeved on the two adjacent connectors. The horizontal connection lines of the axes of the plurality of support columns 222 are on a reference circle, and the center of the reference circle is on the axis of the chassis 240. When the base plate 240 rotates, the plurality of support columns 222 are driven to rotate synchronously. The clamping wheel 211 is arranged on one side of the supporting columns 222 far away from the axis of the chassis 240, the chassis 240 drives the clamping wheel 211 to synchronously rotate around the axis of the chassis 240 when rotating, the metal pipe 300 penetrates through gaps between the clamping wheel 211 and the supporting columns 222 when bending, and the metal pipe 300 abuts against the clamping wheel 211 and at least one supporting column 222, so that the metal pipe 300 is bent under the action of the supporting columns 222 and the clamping wheel 211 when the chassis 240 rotates.

The adjusting mechanism is used for adjusting the radius of a reference circle where the axes of the plurality of supporting columns 222 are located, and further adjusting the bending curvature of the metal tube 300.

In this embodiment, the adjustment mechanism includes a rotating sleeve 232, a first swivel ring 229, a first articulation rod 223, a synchronizing assembly, and an adjustment assembly. The rotating sleeve 232 is sleeved outside the driving shaft 213 and is in screw transmission fit with the driving shaft 213. The first rotating ring 229 is rotatably sleeved outside the rotating sleeve 232, the first rotating ring 229 and the rotating sleeve 232 move synchronously in the vertical direction and rotate synchronously with the driving shaft 213, specifically, a top cover is fixedly mounted on the top of the driving shaft 213, an expansion rod 2210 which can expand and contract in the vertical direction is arranged between the first rotating ring 229 and the top cover, the upper end of the expansion rod 2210 is connected to the top cover, and the lower end of the expansion rod 2210 is connected to the first rotating ring 229. The first hinge lever 223 is provided in plurality, and one end of each first hinge lever 223 is hinged to the swivel and the other end is hinged to the support column 222, so that the support column 222 is driven by the first hinge lever 223 to rotate in the same direction as the driving shaft 213 when the first swivel 229 rotates. The synchronizing assembly includes a first detent 216 and a second detent 218. The first locking portion 216 is fixedly attached to the drive shaft 213. The second locking portion 218 is fixedly mounted on the outside of the rotation sleeve 232, and the first locking portion 216 and the second locking portion 218 abut in the circumferential direction of the drive shaft 213 in an initial state to transmit the rotation of the drive shaft 213 to the rotation sleeve 232, specifically, when the first locking portion 216 includes a first stopper strip protruding upward, the second locking portion 218 includes a second stopper strip protruding downward, and the first stopper strip and the second stopper strip abut in the circumferential direction of the drive shaft 213. The adjusting assembly is used for causing the second clamping portion 218 to disengage from the second clamping portion 218, and driving the chassis 240 to move in a direction perpendicular to the metal tube 300, and driving the rotating sleeve 232 to rotate relative to the driving shaft 213, and the rotating sleeve 232 also moves downwards in the axial direction of the driving shaft 213 when rotating, so that the distance of the rotating ring relative to the chassis 240 is increased, the curvature radius of a reference circle where the plurality of supporting columns 222 are located is increased, and at least one supporting column 222 abuts against the metal tube 300. The curvature of the metal tube 300 can be changed.

In this embodiment, a screw groove is formed on an outer circumferential wall of the driving shaft 213, and a slider is provided on an inner circumferential wall of the rotating sleeve 232, and the slider is inserted into and slidably disposed in the screw groove. The adjustment assembly includes a moving plate 231, a first gear 236, a first drive, a second gear 237, and an operating handle 238. The worktable 100 is provided with a horizontal sliding groove 105, a moving plate 231 is horizontally arranged and slidably arranged along the sliding groove 105, and a chassis 240 is fixedly mounted on the moving plate 231. The moving plate 231 is provided with a mounting groove, the first gear 236 is arranged in the mounting groove and can rotate around the axis of the first gear, a rack 104 is arranged on the wall of one side of the sliding groove 105, and the first gear 236 is meshed with the rack 104. The second gear 237 is fixedly secured to the outside of the rotating sleeve 232. The operating handle 238 is horizontally disposed, one end of the operating handle 238 is slidably engaged with the second gear 237 in the circumferential direction of the rotating sleeve 232, specifically, the operating handle 238 includes a mounting ring 239 and a telescopic handle, the mounting ring 239 is disposed coaxially with the second gear 237 and is rotatably mounted at the bottom of the second gear 237, and the second locking portion 218 is fixedly disposed on the lower surface of the mounting ring 239. The telescopic handle is fixedly connected to the mounting ring 239 and is telescopically arranged along the radial direction of the mounting ring 239, and when the first clamping portion 216 and the second clamping portion 218 need to be disengaged, the telescopic handle 238 is pulled out outwards and lifted upwards, so that the mounting ring 239 drives the second gear 237 to ascend. The second gear 237 is raised into engagement with the first gear 236 as the lever 238 is moved upward. The first driving portion is configured to drive the moving plate 231 to move in a direction perpendicular to the metal tube 300 along the sliding slot 105 after the second gear 237 is meshed with the first gear 236, the moving plate 231 drives the first gear 236 to rotate along the rack 104 when moving, the first gear 236 drives the second gear 237 to rotate when rotating, the second gear 237 drives the rotating sleeve 232 to rotate relative to the driving shaft 213, and the rotating sleeve 232 descends relative to the driving shaft 213 under the restriction of the thread groove and the slider when rotating relative to the driving shaft 213.

In this embodiment, a bending apparatus for hardware processing further includes a stabilizing assembly including a second swivel 228, a push plate 225, and a second hinge rod 226. The second rotating ring 228 is sleeved on the rotating sleeve 232 and located below the first rotating ring 229, and the second rotating ring 228 rotates synchronously with the rotating sleeve 232 and is disposed vertically and slidably relative to the rotating sleeve 232. The number of the top pushing plates 225 is multiple, the multiple top pushing plates 225 are sequentially connected through the expansion plate 227 to form a closed loop, the closed loop is coaxially arranged with the rotating sleeve 232, the inner side of the supporting column 222 abuts against the outer side of the closed loop, the number of the second hinge rods 226 is multiple, the inner end of each second hinge rod 226 is hinged to the second rotating ring 228, the outer end of each second hinge rod 226 is hinged to the top pushing plate 225, the outer end of each second hinge rod 226 is located on the front side of the inner end of the corresponding second hinge rod 226 along the rotating direction of the rotating sleeve 232, so that when the second rotating ring 228 rotates along with the rotating sleeve 232, at least one part of the closed loop abuts against the inner side of the supporting column 222, and the supporting column 222 is more stable.

In this embodiment, the bending apparatus for hardware processing further includes a connection column 215, a connection rod 217, and a screw 212. The connecting column 215 is fixedly arranged on the chassis 240 and eccentrically arranged with the chassis 240, the connecting rod 217 is horizontally arranged, one end of the connecting rod 217 is fixedly connected with the driving shaft 213, the other end of the connecting rod 217 is fixedly connected with a top cover of the connecting rod 217, a threaded hole is arranged on the top cover, a screw rod 212 is inserted in the threaded hole, a threaded bulge in screw transmission fit with the threaded hole is arranged on the screw rod 212, a vertical positioning rod is fixedly arranged at one end of the screw rod 212, a clamping wheel 211 is rotatably sleeved on the positioning rod, the clamping wheel 211 is slidably arranged along the radial direction of the chassis 240, a hand wheel 214 is sleeved at one end of the screw rod 212, the hand wheel 214 is rotatably arranged on the connecting rod 217, the hand wheel 214 is in screw transmission fit with the screw rod 212, so that the handwheel 214 rotates to drive the screw 212 to move along the radial direction of the chassis 240, and the distance of the axis of the chassis 240 of the clamping wheel 211 is adjusted, so that the clamping wheel 211 is abutted against the metal tube 300.

In this embodiment, the first driving portion is a hydraulic cylinder 235, the hydraulic cylinder 235 is disposed on the worktable 100, a piston rod 233 of the hydraulic cylinder 235 penetrates through the worktable 100 and is fixedly connected to the moving plate 231, specifically, an insertion hole 106 is disposed on the worktable 100, and the piston rod 233 penetrates through the insertion hole 106. The bending equipment for hardware processing further comprises a second driving part and a mounting plate 234, wherein the second driving part is a motor 500, and the motor 500 is used for driving a driving shaft 213 to rotate. Mounting plate 234 is disposed below moving plate 231 and is fixedly connected to moving plate 231, and motor 500 is fixedly mounted on mounting plate 234.

In this embodiment, the support assembly 400 includes a central plate 401 and two positioning members. The central plate 401 is vertically disposed, and the lower end thereof is fixedly mounted to the work table 100, and a through hole is formed in the middle of the central plate 401. Two setting elements set up respectively in the both sides of well core plate 401, and every setting element includes ejector pin 402 and roof 403, and ejector pin 402 runs through in well core plate 401 and extends along the radial direction of through-hole, and in the inner of ejector pin 402 stretched into the through-hole, two ejector pins 402 all were in the horizontal direction, and the stopper was all installed to the relative one end of two ejector pins 402, is provided with the arc recess on every stopper, and two arc recesses set up relatively, and the central angle of arc recess is greater than 90 degrees and is less than 180 degrees. The top plate 403 is fixedly arranged at the outer end of the top rod 402, and the top plate 403 is connected with the central plate 401 through a spring. The outer contour of the clamping wheel 211 is in a dumbbell shape with the thickness gradually becoming from the middle to the two ends, and the middle of the clamping wheel 211 and the circle center of the arc-shaped groove are in the same horizontal straight line. When the metal tube 300 is placed between the two limiting plates, the first spring and the second spring are both stretched, and the metal tube 300 is limited by the two arc-shaped grooves and the clamping wheel 211, so that the axes of the metal tube 300 are approximately at the same height no matter the diameter.

In this embodiment, the bending apparatus for hardware processing further includes an auxiliary wheel 103, an axis of the auxiliary wheel 103 is in a vertical direction, the auxiliary wheel 103 is rotatably mounted on the workbench 100 around its axis, the auxiliary wheel 103 and the clamping wheel 211 are on the same side of the metal tube 300 and keep in contact with the metal tube 300, so that stability of the metal tube 300 during bending is improved.

In the present embodiment, a scale 241 is provided on the upper surface of the base plate 240, and a radius of curvature is displayed on the scale 241, so that the degree of bending of the metal pipe 300 can be observed. A plurality of limiting grooves 242 are formed in the base plate 240 in the axial direction of the base plate, each limiting groove 242 extends in the radial direction of the base plate 240, a limiting slide block is mounted at the lower end of each pushing plate 225, each limiting slide block is located in one limiting groove 242 and slidably arranged along the limiting groove 242, the pushing plates 225 slide along a preset limiting slide way when being subjected to the acting force of the second hinge rod 226, and the stability of the pushing block structure is improved.

The theory of operation and the working process of the hardware processing bending equipment of this embodiment are:

firstly, a metal pipe 300 to be bent is inserted into a through hole of a central plate 401, a plurality of push rods 402 clamp the metal pipe 300, then a hand wheel 214 is rotated, the hand wheel 214 rotates to drive a screw 212 to move towards one side close to a support column 222 along the radial direction of a base plate 240, and a clamping wheel 211 and the support column 222 clamp the metal pipe 300. When the metal tube 300 needs to be bent, the motor 500 is started, the motor 500 drives the driving shaft 213 to rotate, the driving shaft 213 drives the rotating sleeve 232 to synchronously rotate through the first clamping part 216 and the second clamping part 218, and the rotating sleeve 232 rotates to drive the first rotating ring 229 to rotate. And when the driving shaft 213 rotates, the telescopic rod 2210 drives the second rotating ring 228, and the connecting rod 215 and the connecting rod 217 drive the chassis 240 to rotate synchronously, that is, at this time, the first rotating ring 229, the second rotating ring 228, the chassis 240, the driving shaft 213 and the rotating sleeve 232 rotate synchronously, the rotating sleeve 232 and the driving shaft 213 do not perform spiral transmission, the distance between the first rotating ring 229 and the chassis 240 is unchanged, the radius of a reference circle where the axes of the plurality of supporting columns 222 are located is unchanged, the second rotating ring 228 and the chassis 240 rotate synchronously, and a closed loop surrounded by the plurality of pushing plates 225 is not expanded or contracted, so that when the chassis 240 rotates, the metal pipe 300 is bent under the action of the clamping wheels 211 and the supporting columns 222 (as shown in fig. 10).

As shown in fig. 2, 4, 5, 6, 8 and 9, when it is necessary to reduce the curvature of the bend of the metal pipe 300, the lever 238 is pulled and lifted upward, the lever 238 is moved upward to move the second gear 237 upward, so that the second gear 237 is engaged with the first gear 236 and the first and

second locking portions

216 and 218 are disengaged. The hydraulic cylinder 235 is started, the hydraulic cylinder 235 drives the moving plate 231 to move in the direction perpendicular to the metal tube 300 along the sliding groove 105, the moving plate 231 drives the first gear 236 to rotate along the rack 104 when moving, the first gear 236 drives the second gear 237 to rotate when rotating, the second gear 237 drives the rotating sleeve 232 to rotate relative to the driving shaft 213, the rotating sleeve 232 descends relative to the driving shaft 213 under the limitation of the thread groove and the sliding block when rotating relative to the driving shaft 213, the distance from the first rotating ring 229 to the chassis 240 is reduced, and the diameter of a reference circle where the axes of the plurality of supporting columns 222 are located is increased. As the second rotary ring 228 rotates relative to the bottom plate 240, the closed loop defined by the push plate 225 expands to support the support column 222. When the diameter of a reference circle on which the axis of the support column 222 is located is expanded to a predetermined size, the hydraulic cylinder 235 is stopped, the operating handle 238 is manually lowered, the second gear 237 is disengaged from the first gear 236, the first locking portion 216 and the second locking portion 218 are abutted in the circumferential direction of the drive shaft 213, and then the motor 500 is started again to bend the metal pipe 300 (as shown in fig. 11).

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A bending device for hardware processing is used for bending a metal pipe and is characterized by comprising a workbench, a supporting assembly, a bending mechanism and an adjusting mechanism; the workbench is fixedly arranged, and the support assembly is used for keeping the axes of the metal tubes at the same position in a disposal state;

the bending mechanism comprises a chassis, a limiting wheel and a bending assembly, the chassis is arranged on the workbench, the axis of the chassis is in the vertical direction, a driving shaft penetrates through the center of the chassis, the driving shaft is rotatably arranged around the axis of the driving shaft, and the driving shaft drives the chassis to synchronously rotate when rotating; the bending assembly comprises a plurality of supporting columns and clamping wheels, the supporting columns form an arc-shaped resisting surface, every two adjacent supporting columns are sleeved through a sleeving ring, the connecting line of the axes of the supporting columns in the horizontal direction is located on a reference circle, and the center of the reference circle is located on the axis of the chassis; when the chassis rotates, the plurality of support columns are driven to synchronously rotate;

the clamping wheels are arranged on one sides of the supporting columns far away from the axle center of the chassis, the chassis drives the clamping wheels to synchronously rotate around the axle center of the chassis when rotating, the metal pipe penetrates through gaps between the clamping wheels and the supporting columns when being bent, and the metal pipe abuts against the clamping wheels and at least one supporting column so as to be bent under the action of the supporting columns and the clamping wheels when the chassis rotates;

the adjusting mechanism is used for adjusting the radius of a reference circle where the axes of the supporting columns are located, and then adjusting the bending curvature of the metal pipe.

2. The bending device for hardware processing according to claim 1, wherein: the adjusting mechanism comprises a rotating sleeve, a first rotating ring, a first hinge rod, a synchronizing assembly and an adjusting assembly; the rotating sleeve is sleeved on the outer side of the driving shaft and is in spiral transmission fit with the driving shaft; the first rotating ring is sleeved on the outer side of the rotating sleeve, the first rotating ring and the rotating sleeve move synchronously in the vertical direction and rotate synchronously along with the driving shaft, a plurality of first hinge rods are arranged, one end of each first hinge rod is hinged to the rotating ring, and the other end of each first hinge rod is hinged to the supporting column; the synchronizing assembly includes a first detent and a second detent; the first clamping stop part is fixedly arranged on the driving shaft; the second clamping part is fixedly arranged on the outer side of the drum sleeve ring, and the first clamping part and the second clamping part are abutted in the circumferential direction of the driving shaft in an initial state so as to transmit the rotation of the driving shaft to the rotating sleeve; the adjusting assembly is used for enabling the second clamping parts to be separated from each other, the driving chassis moves in the direction perpendicular to the metal pipe and drives the rotating sleeve to rotate relative to the driving shaft, the rotating sleeve further moves downwards in the axial direction of the driving shaft when rotating, and then the distance of the rotating ring relative to the chassis is reduced, so that the curvature radius of a reference circle where the supporting columns are located is increased, and at least one supporting column abuts against the metal pipe.

3. The bending device for hardware processing according to claim 2, wherein: the outer peripheral wall of the driving shaft is provided with a thread groove, the inner peripheral wall of the rotating sleeve is provided with a sliding block, and the sliding block is inserted into the thread groove and can be arranged in the thread groove in a sliding manner; the adjusting assembly comprises a moving plate, a first gear, a first driving part, a second gear and an operating handle; the workbench is provided with a horizontal sliding groove, the movable plate is horizontally arranged and can slide along the sliding groove, and the chassis is fixedly arranged on the movable plate; the movable plate is provided with a mounting groove, a first gear is positioned in the mounting groove and can be rotatably arranged around the axis of the first gear, a rack is arranged on the groove wall on one side of the chute, and the first gear is meshed with the rack; the second gear is fixedly sleeved on the outer side of the rotating sleeve; the operating handle is horizontally arranged, one end of the operating handle is in sliding fit with the second gear in the circumferential direction of the second gear, and the operating handle drives the rotating sleeve to synchronously move up and down when moving up and down; when the operating handle moves upwards, the second gear is driven to ascend to be meshed with the first gear; the first driving part is used for driving the moving plate to move along the sliding groove in the direction perpendicular to the metal pipe after the second gear is meshed with the first gear.

4. The bending device for hardware processing according to claim 3, wherein: the bending equipment for hardware processing further comprises a stabilizing assembly, wherein the stabilizing assembly comprises a second rotating ring, a pushing plate and a second hinge rod; the second rotating ring is rotatably sleeved on the rotating sleeve and is positioned below the first rotating ring, and the second rotating ring synchronously rotates along with the rotating sleeve and is arranged in a vertical direction in a manner of being relatively slidable with the rotating sleeve; the quantity of push plates has a plurality ofly, and a plurality of push plates loop through the expansion plate and connect and enclose into a closed loop, and the closed loop sets up with the rotation sleeve is coaxial, the inboard of support column offsets with the outside of closed loop, and the second hinge bar has a plurality ofly, and the inner of every second hinge bar articulates in the second change, and the outer end articulates in the push plate, and along the rotation direction who rotates the sleeve, the outer end of second hinge bar is in the front side in the inner of second hinge bar to make at least partly of closed loop offset with the inboard of support column when the second rotates along with rotating the sleeve.

5. The bending device for hardware processing according to claim 1, wherein: the bending equipment for hardware processing also comprises a connecting column, a connecting rod and a screw rod; spliced pole fixed mounting is on the chassis, and with chassis eccentric settings, the connecting rod level sets up, and the one end fixed connection of connecting rod is in the drive shaft, and other end fixed connection is in the connecting rod, is provided with the screw hole on the connecting rod, and threaded hole interpolation is equipped with the screw rod, is provided with on the screw rod with screw hole screw drive complex screw thread arch, and the one end fixed mounting of screw rod has vertical locating lever, the tight pulley rotationally overlaps on locating lever, and the tight pulley sets up along the radial direction slidable on chassis, and a pot head of screw rod is equipped with the hand wheel, and the hand wheel rotationally installs on the connecting rod, hand wheel and screw rod screw drive cooperation for the hand wheel drives the screw rod and removes along the radial direction on chassis when rotating, makes tight pulley offset with the tubular metal resonator.

6. The bending device for hardware processing according to claim 3, wherein: the first driving part is a hydraulic cylinder, the hydraulic cylinder is arranged on the workbench, and a piston rod of the hydraulic cylinder penetrates through the workbench and is fixedly connected with the movable plate; hardware processing is with equipment of bending still includes the second drive division, and the second drive division is the motor, and the motor is used for the drive shaft to rotate.

7. The hardware processing is with equipment of bending according to claim 1, characterized in that: the support assembly comprises a central plate and two positioning pieces; the central plate is vertically arranged, the lower end of the central plate is fixedly arranged on the workbench, and a through hole is formed in the middle of the central plate; the two positioning pieces are respectively arranged on two sides of the central plate, each positioning piece comprises a top rod and a top plate, the top rods penetrate through the central plate and extend along the radial direction of the through hole, the inner ends of the top rods extend into the through hole, the two top rods are both in the horizontal direction, limiting blocks are arranged at the opposite ends of the two top rods, each limiting block is provided with an arc-shaped groove, the two arc-shaped grooves are oppositely arranged, and the central angle of each arc-shaped groove is larger than 90 degrees and smaller than 180 degrees; the top plate is fixedly arranged at the outer end of the ejector rod, and the top plate is connected with the central plate through a spring; the top plate is fixedly arranged at the outer end of the ejector rod, and the top plate is connected with the central plate through a spring; the outer contour of the clamping wheel is in a dumbbell shape with the thickness gradually becoming from the middle to the two ends, and the middle of the clamping wheel and the circle center of the arc-shaped groove are in the same horizontal straight line.

8. The bending device for hardware processing according to claim 1, wherein: the hardware processing is with equipment of bending still includes the auxiliary wheel, and the axis of auxiliary wheel is in vertical direction, and the auxiliary wheel is rotationally installed in the workstation around self axis, and the auxiliary wheel is in the same one side of tubular metal resonator with the pinch roller, and keeps the contact with the tubular metal resonator.

9. The bending device for hardware processing according to claim 1, wherein: a dial is arranged on the upper surface of the chassis, and the radius of curvature is displayed on the dial; the chassis is provided with a plurality of limiting grooves around the axis direction of the chassis, each limiting groove extends along the radial direction of the chassis, the lower end of each pushing plate is provided with a limiting slide block, and each limiting slide block is positioned in one limiting groove and can be arranged along the limiting groove in a sliding mode.

10. The bending device for hardware processing according to claim 1, wherein: the middle part fixed mounting of the upper end of every support column has the connector that the diameter is less than the support column, cup joints on the ring cover locates two adjacent connectors, cup joints two adjacent support column contacts when the ring cover locates two adjacent cup joints.