CN203725973U - Resistance welding device - Google Patents
Resistance welding device Download PDFInfo
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- CN203725973U CN203725973U CN201320884151.9U CN201320884151U CN203725973U CN 203725973 U CN203725973 U CN 203725973U CN 201320884151 U CN201320884151 U CN 201320884151U CN 203725973 U CN203725973 U CN 203725973U
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Abstract
A resistance welding device comprises a supporting part (1), a tensioning mechanism, an upper electrode (72), a lower electrode (73), a welding air cylinder (71) and a control device. The supporting part (1) comprises multiple expansion sleeves (11) which are sequentially in sliding connection in a front-back mode and a rubber ring (12) clamped between every two adjacent expansion sleeves (11). Pull rods (21) of the tensioning mechanism are inserted into shaft holes of the expansion sleeves (11), and a top cover (2) for limiting outward motion of the expansion sleeve (11) in the forefront is fixed at the front end. Tensioning power devices (22) exert axial extrusion force on the expansion sleeves (11) to enable a distance between every two adjacent expansion sleeves (11) to be small and accordingly extrude the rubber rings (12) to be increased in outer diameter and achieve tensioning and positioning of pipe fitting inner walls. An expansion device of the resistance welding device does not damage the workpiece inner walls, can enable the workpiece deformation amplitude to be very small, can rotate while performing expansion and greatly improves the welding efficiency. In addition, the resistance welding device is further provided with a pneumatic floating device and greatly improves the welding quality.
Description
Technical field
The utility model relates to a kind of welder of industrial use, relates in particular to a kind of welder for pipe fitting and joint are welded together.
Background technology
Electric resistance welding be by after weldment combination by the electrode compression of exerting pressure, utilize electric current to pass through the contact-making surface of joint and the resistance heat effect that adjacent domain produces, by workpiece be heated to fusing or mecystasis, and under pressure cooled and solidified to realize the welding method of metal works combination.Electric resistance welding does not need welding wire, welding rod etc. to fill metal, and the welding material such as oxygen, acetylene, hydrogen, and welding cost is low; Weldment thermal shock region is little, and deformation and stress is also little, conventionally at postwelding, needn't arrange to proofread and correct and heat treatment step, so electric resistance welding is used widely in modern industry.
In existing welder, thereby normally adopt metalwork to support the object that reaches location in the inwall of pipe fitting for locating the pipe fitting positioning device of pipe fitting to be welded, but the direct contact action of this metalwork is easily damaged the inwall of pipe fitting in the mode of pipe fitting inner wall, even likely cause the distortion of pipe fitting.In addition, existing pipe fitting positioning device only has single tensioner positioning function, can not rotate, and should not realize automation, when being applied to welder, if in the time of need to welding a plurality of joint in the position of the different angles of pipe fitting, also need to make pipe fitting positioning device to reset, readjust the angle of pipe fitting, and then carry out tensioner location, use cumbersomely, efficiency is low, time-consuming.
In addition, the resistance welding machine of existing weld-end fittings generally all comprises weld cylinder and the pipe fitting positioning device that top electrode, bottom electrode, driving upper/lower electrode compress, pipe fitting positioning device is by after pipe fitting and joint location combination, and weld cylinder drives upper/lower electrode to compress pipe fitting and joint welds.The resistance welding machine of existing weld-end fittings in actual use, because pipe fitting cannot also together decline with top electrode in the moment of fusing, pipe fitting and joint cannot further be compressed, cause the problems such as rosin joint, dry joint, " fried fire ", make that welding product is of poor quality, defect rate is high; In addition,, because pipe fitting cannot also decline with top electrode in the moment of fusing, upper/lower electrode applied pressure also can cause distortion or other infringements of pipe fitting and pipe fitting positioning device.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of welder that can avoid tensioner when location metalwork to contact with pipe fitting inner wall.
Another technical problem to be solved in the utility model can make pipe fitting decline with top electrode in the moment of fusing simultaneously welder while being to provide a kind of weld-end fittings.
The technical scheme in the invention for solving the above technical problem is, manufactures and designs a kind of welder, comprising: weld cylinder and control device that pipe fitting positioning device, top electrode, bottom electrode, the described top electrode of driving move up and down; Described weld cylinder drives top electrode to compress pipe fitting and joint energising downwards and welds.
Described pipe fitting positioning device comprises the tensioning mechanism for tensioner pipe fitting inner wall to be welded, and described support member comprises the ringfeder that a plurality of front and back are slidably connected successively, the ringfeder seat that is folded in the cushion rubber between two adjacent ringfeders and is fixedly connected with rearmost end ringfeder; Described tensioning mechanism comprises pull bar and the tension power set that are connected with described back end of tie rod; Described pull bar inserts the axis hole of described a plurality of ringfeders, and its front end is fixed the top cover that a restriction forefront ringfeder outwards moves.
Thereby described tension power set apply axial compression power by described pull bar to ringfeder and distance between adjacent two ringfeders are diminished push described cushion rubber, thus the described cushion rubber generation deformation being extruded and external diameter becomes large tensioner location of realizing described pipe fitting inner wall.
Described pipe fitting positioning device also comprises rotating mechanism, the rotary power unit that this rotating mechanism comprises rotating shaft and acts on this rotating shaft rear portion, and described rotating shaft is anterior to be connected with described support member.
Described tensioning mechanism also comprises: be socketed on take-up pulley that the outer and lateral surface of described rotating shaft is provided with annular groove, can be socketed on the relative rotation the pushing clamping sleeve outside this take-up pulley and be fixed on described pushing clamping sleeve and inner side is positioned at the driving member of described annular groove; The power of described tension power set produces axle and is connected with described pushing clamping sleeve; Described power produces axle and pulls described pushing clamping sleeve, and this pushing clamping sleeve pulls described take-up pulley by described driving member.
Described pull bar rear portion offers the first through hole, offers the second through hole on described take-up pulley, offers axially extended slotted hole on described rotating shaft; Described rotating shaft inner chamber is inserted at described pull bar rear portion, and a latch links together described pull bar, take-up pulley and rotating shaft through described the first through hole, the second through hole and slotted hole.
Described rotating shaft both sides are provided with axially extended protruding key, described take-up pulley inwall corresponding position is provided with two axial notches, and the described protruding key of rotating shaft both sides embeds respectively and in two axial notches of take-up pulley, makes can only to move axially relatively between described take-up pulley and rotating shaft but can not relatively rotate.
Described driving member comprises dead axle and bearing, and described dead axle is fixed on described pushing clamping sleeve, and described bearing is positioned at the annular groove in described take-up pulley outside and pegs graft with this dead axle.
Welder of the present utility model also comprises the floating installation that acts on described pipe fitting positioning device, and this floating installation comprises the floating cylinder of vertical setting and supporting air-channel system.
Described floating cylinder is double-acting cylinder, and its cylinder body is provided with the upper gas port communicating with piston top inner chamber and the lower gas port communicating with piston below inner chamber; The clutch end of described floating cylinder is fixedly connected with pipe fitting positioning device; The upper gas port of described floating cylinder is connected described air-channel system with lower gas port, thereby the tolerance of controlling described air-channel system changes the duty of described floating cylinder to adjust the air pressure of described floating cylinder piston upper and lower.
During welding, the inner chamber of the inner chamber of the piston of described floating cylinder top and piston below is all filled with compressed air, makes described pipe fitting positioning device in suspended state.
Described air-channel system comprises: the upper gas circuit being communicated with gas port on described floating cylinder and Pneumatic assembly thereof and the lower gas circuit and the Pneumatic assembly thereof that are communicated with gas port under described floating cylinder.
Described upper gas circuit and Pneumatic assembly thereof comprise the first pressure regulator valve, the first two-position three-way valve and the first one-way throttle valve being linked in sequence with body.
Described lower gas circuit and Pneumatic assembly thereof comprise the second pressure regulator valve, check valve, the second two-position three-way valve, the second one-way throttle valve being linked in sequence with body, are also included in the 3rd two-position three-way valve that forms bypass between described the second pressure regulator valve entrance and the second two-bit triplet valve outlet port.
Described the first pressure regulator valve and the second pressure regulator valve are air pressure pressure regulator valve; Described the first two-position three-way valve, the second two-position three-way valve and the 3rd two-position three-way valve are magnetic valve; Described the first one-way throttle valve and the second one-way throttle valve are throughput choke valve.
Described the first pressure regulator valve, the second pressure regulator valve, the first two-position three-way valve, the second two-position three-way valve, the 3rd two-position three-way valve, the first one-way throttle valve are all connected with control device with the second one-way throttle valve.
At described floating cylinder, be also provided with the sensor for detection of piston position, described sensor is connected with described control device.
Compared with the existing technology, thereby the pipe fitting positioning device in the utility model welder utilizes the cushion rubber distortion of tensioning mechanism extruded sleeve on support member to make external diameter become large tensioner on the inwall of pipe fitting, reach the object of positioning workpieces, can avoid metalwork to contact with the inwall of workpiece, workpiece inwall can be do not damaged, and the distortion of pipe fitting can be reduced to greatest extent; Simultaneously, pipe fitting positioning device of the present utility model has tensioner location and spinfunction concurrently, after tensioner positioning workpieces, possesses again spinfunction, the convenient Difference angles at pipe fitting welds another joint, greatly improve the efficiency of welding, and do not needed to manufacture the welding that more tool can be realized many kinds, effectively reduced production cost; In addition, welder of the present utility model is because pipe fitting positioning device is in suspended state, pipe fitting also together declined with top electrode in the moment of fusing, pipe fitting and joint are further compressed, the problems such as rosin joint, dry joint, " fried fire " have been avoided, make welding product quality good, reduced defect rate, avoided upper/lower electrode applied pressure also can cause distortion or other infringements of pipe fitting and pipe fitting positioning device simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model welder;
Structural representation when Fig. 2 is the welding of the utility model welder;
Fig. 3 is the structural representation of described pipe fitting positioning device 10;
Fig. 4 is the exploded view of described pipe fitting positioning device 10;
Fig. 5 is the structural representation of described take-up pulley 24 and pushing clamping sleeve 25;
Fig. 6 is described ringfeder 11 structural representations;
Fig. 7 is the pneumatic diagram that the pipe fitting positioning device 10 of the utility model welder is positioned at floating installation 6 while preparing position;
Fig. 8 is the pneumatic diagram of the pipe fitting positioning device 10 of the utility model welder floating installation 6 while dropping to working position;
Fig. 9 is the pneumatic diagram of pipe fitting positioning device 10 floating installation 6 when suspended state of the utility model welder;
Figure 10 is the pneumatic diagram that the pipe fitting positioning device 10 of the utility model welder rises to floating installation 6 while preparing position.
The specific embodiment
Below in conjunction with the most preferred embodiment shown in accompanying drawing, be described in further detail.
In the present embodiment, welder of the present utility model is applied to one or more joints 92 to be welded in the lateral wall of pipe fitting 91, as depicted in figs. 1 and 2, it comprises: pipe fitting positioning device 10, top electrode 72, bottom electrode 73, the weld cylinder 71, floating installation 6 and the control device that drive described top electrode 72 to move up and down.Pipe fitting 91 to be welded and joint 92 are individually fixed in pipe fitting positioning device 10 and bottom electrode 73 places, and described weld cylinder 71 drives top electrode 72 to compress pipe fitting 91 and joint 92 energising downwards and welds.
Wherein, as shown in Figure 3 and Figure 4, described pipe fitting positioning device 10 adopts the mode of tensioner location to realize the location to pipe fitting 91, and it mainly comprises: support member 1, tensioning mechanism and rotating mechanism, pipe fitting 91 levels are socketed in outside support member 1.Below be illustrated respectively.
Described support member 1 is roughly cylindric, comprises the ringfeder 11 that a plurality of front and back join, the ringfeder seat 13 that is folded in the cushion rubber 12 between adjacent ringfeder 11 and is fixed on rear ringfeder 11.As shown in Figure 6, the anterior external diameter of described ringfeder 11 is less, and rear portion external diameter is larger, and joint, front and rear part forms a vertical place, rank 113 that becomes.During assembling, the front portion of rear ringfeder 11 is plugged in the inner chamber of the place ahead ringfeder 11, and described cushion rubber 12 is socketed on less anterior of rear ringfeder 11 external diameters and is folded between the rear end face of the place ahead ringfeder 11 and place, the vertical change rank of rear ringfeder 11 113.
As shown in Figure 3 and Figure 4, the rotary power unit 32 that rotating mechanism comprises rotating shaft 31 and acts on these rotating shaft 31 rear portions, rotary power unit 32 can rotate by driven rotary axle 31, the front and rear of this rotating shaft 31 is respectively by bearing 51 and bearing 52 supports, on the middle part sidewall of rotating shaft 31, be relatively fixed with two protruding keys 312 that extend vertically, in addition, also offer a slotted hole 311 extending vertically.
Described tensioning mechanism comprises pull bar 21, tension power set 22, the top cover 23 that is fixed in pull bar 21 front ends, take-up pulley 24, pushing clamping sleeve 25, driving member 26, pushes away seat 27 and latch 28.
Wherein, in the inner chamber of the described a plurality of ringfeders 11 of described pull bar 21 anterior insertion, the affixed top cover 23 of its front end is socketed on ringfeder 11 front portions of forefront, these top cover 23 rear end faces are gripped with cushion rubber 12 between locating 113 with the vertical change rank of forefront ringfeder 11, insert in the anterior inner chamber of described rotating shaft 31 at pull bar 21 rear portions, and these pull bar 21 rearward end offer the first through hole 211 perpendicular to its axis.
As shown in Figure 5, described take-up pulley 24 is socketed on outside the rotating shaft 31 between two bearings 51 and 52, these take-up pulley 24 lateral surfaces are provided with a ring annular groove 241, and on its sidewall, offer the second through hole 242 perpendicular to its axis, in addition, two axial notches 243 that these take-up pulley 24 inwall both sides are respectively equipped with the direction that parallels to the axis embed respectively for the described protruding key 312 of rotating shaft 31 both sides, make thus can only move axially relatively between described take-up pulley 24 and rotating shaft 31 but can not relatively rotate.
Described pushing clamping sleeve 25 is socketed on outside take-up pulley 24, and its lateral wall is a polygon wall, wherein on two relative walls, offers the third through-hole 251 perpendicular to its axis, offers fourth hole 252 and a plurality of screw 253 on all the other walls.In addition, wherein two faces of the polygon lateral wall of described pushing clamping sleeve 25 are fitted with two Anti-rotary blocks 4 that are fixed outward, can prevent that thus pushing clamping sleeve 25 is around its axis rotation.
Described driving member 26 is provided with a plurality of and is arranged at respectively on a plurality of walls of pushing clamping sleeve 25, this driving member 26 comprises dead axle 261 and bearing 262, wherein dead axle 261 the inners are provided with protruding axle, in the fourth hole 252 of this protruding axle from pushing clamping sleeve 25 walls, insert pushing clamping sleeve 25 inner chambers and peg graft with bearing 262, and described bearing 262 is positioned at the annular groove 241 in described take-up pulley 24 outsides, screw is fixed on dead axle 261 outer ends on pushing clamping sleeve 25 by the screw 253 on pushing clamping sleeve 25 walls.Being arranged so that between pushing clamping sleeve 25 and take-up pulley 24 of this driving member 26 can be rotated around axis is relative, but can not relatively move along axis direction.
Described latch 28 links together described pull bar 21, take-up pulley 24 and rotating shaft 31 through the first through hole 211, the second through hole 242 on take-up pulley 24 and the slotted hole 311 on rotating shaft 31 on pull bar 21, and with jump ring 281, is stuck in the jump-ring slot at these latch 28 two ends.
As shown in Figure 4, described tension power set 22 are provided with two and lay respectively at the both sides of rotating shaft 31, and its power produces axle 221 and is connected with oscillating bearing 222.Described seat 27 outer ends that push away convex with protruding axle 271 and are plugged in described oscillating bearing 222, push away seat 27 the inners and are provided with projection 272, and this projection 272 is plugged in the third through-hole 251 on described pushing clamping sleeve 25.The power of described tension power set 22 produces axle 221 by oscillating bearing 222 and pushes away seat 27 and pulls described pushing clamping sleeve 25 to move forward or backward, and 25 of this pushing clamping sleeves pull by a plurality of driving members 26 that are fixed thereon that described take-up pulley 24 is corresponding to be moved forward or backward.In the present embodiment, described tension power set 22 can adopt air cylinder structure.
The power of described tension power set 22 produces axle 221 by oscillating bearing 222 and pushes away seat 27 while pulling described pushing clamping sleeve 25 to move backward, be fixed on a plurality of driving members 26 on pushing clamping sleeve 25 and pull that described take-up pulley 24 is corresponding to be moved backward, because pull bar 21 links together by latch 28 and take-up pulley 24, this will pull pull bar 21 to move backward, thereby described pull bar 21 applies extruding force by 23 pairs of a plurality of ringfeders 11 of top cover and distance between adjacent ringfeder 11 is diminished push described cushion rubber 12, thereby deformation occur described cushion rubber 12 becomes greatly and pipe fitting 91 inwall close contacts external diameter, can realize the positioning function to pipe fitting 91 thus.And when needs rotate pipe fitting 91, rotary power unit 32 drives pull bar 21, support member 1 and take-up pulley 24 to rotate by rotating shaft 31 simultaneously, thereby can drive pipe fitting 91 synchronously to rotate.Now, because pushing clamping sleeve 25 is limited and can not rotate by Anti-rotary block 4, and can relatively rotate between pushing clamping sleeve 25 and take-up pulley 24, so rotatablely moving of take-up pulley 24 can not affect pushing clamping sleeve 25.
In addition, when pipe fitting 91 welds with joint 92, pipe fitting 91 will melt with joint 92 contacts site, size necessity of contact site can be dwindled, pipe fitting 91 must decline in the moment of melting thereupon, otherwise will find the problems such as rosin joint, dry joint, fried fire, affect the quality of welding product, and caused the problem that scrappage is high.For this reason, welder of the present utility model is also provided with the floating installation that acts on pipe fitting positioning device 10 6 that adopts baric systerm, has solved the problem that pipe fitting will decline in welding process thereupon.
The structure of described floating installation 6 as shown in Figure 7, comprising: the first pressure regulator valve 61, the second pressure regulator valve 62, the first two-position three-way valve 631, the second two-position three-way valve 632, the 3rd two-position three-way valve 633, the first one-way throttle valve 641, the second one-way throttle valve 642, check valve 65, floating cylinder 66, three-way pipe 67 with for being connected the body of each pipeline assembly.
Described the first pressure regulator valve 61 and described the second pressure regulator valve 62 are air pressure pressure regulator valve, for as required air pressure being reduced to setting value.
Described the first two-position three-way valve 631, the second two-position three-way valve 632 and the 3rd two-position three-way valve 633 are magnetic valve, respectively comprise an air inlet, an exhaust outlet and a gas outlet; When in opening, the air inlet of each two-position three-way valve is communicated with gas outlet, and exhaust outlet and air inlet and gas outlet cut off; When in closed condition being, the exhaust outlet of each two-position three-way valve is communicated with gas outlet, and air inlet and gas outlet and exhaust outlet cut off.
Described the first one-way throttle valve 641 and the second one-way throttle valve 642 are throughput one-way throttle valve, for regulating the flow that flows to the air-flow of air inlet from gas outlet.
Described check valve 65 makes air-flow flow to gas outlet from its air inlet, and can not flow to air inlet from gas outlet.
Described floating cylinder 66 is the double-acting cylinder vertically arranging, and the cylinder body of described floating cylinder 66 is provided with the upper gas port communicating with piston top inner chamber and the lower gas port communicating with piston below inner chamber; The clutch end of floating cylinder 66 is fixedly connected with pipe fitting positioning device 10, for controlling moving both vertically of described pipe fitting positioning device 10.In the present embodiment, described floating cylinder 66 is arranged on described pipe fitting positioning device 10 tops, is appreciated that described floating cylinder 66 also can be arranged on described pipe fitting positioning device 10 belows.
The air inlet of described the first pressure regulator valve 61, the second pressure regulator valve 62 and the 3rd two-position three-way valve 633 is connected with source of the gas respectively.
The gas outlet of described the first pressure regulator valve 61 is connected with the air inlet of the first two-position three-way valve 631; Described the first two-position three-way valve 631 exhaust outlets are in communication with the outside and are provided with muffler, and the gas outlet of described the first two-position three-way valve 631 is connected with the air inlet of the first one-way throttle valve 641; The gas outlet of described the first one-way throttle valve 641 is connected with the upper gas port of floating cylinder 66.
The gas outlet of described the second pressure regulator valve 62 is connected with the air inlet of check valve 65; The gas outlet of described check valve 65 is connected with the air inlet of described the second two-position three-way valve 632; The exhaust outlet of described the second two-position three-way valve 632 is in communication with the outside and is provided with muffler, and the gas outlet of described the second two-position three-way valve 632 is connected with the first interface of described three-way pipe 67.
The exhaust outlet sealing of described the 3rd two-position three-way valve 633, the gas outlet of described the 3rd two-position three-way valve 633 is connected with the second interface of described three-way pipe 67.The 3rd interface of described three-way pipe 67 is connected with the air inlet of described the second one-way throttle valve 642, and the gas outlet of described the second one-way throttle valve 642 is connected with the lower gas port of floating cylinder 66.
Described the first pressure regulator valve 61, the second pressure regulator valve 62, the first two-position three-way valve 631, the second two-position three-way valve 632, the 3rd two-position three-way valve 633 are all connected with control device, by control device, controlled, in the present embodiment, described control device adopts the control circuit of the compositions such as PLC.
During described floating installation 6 work, comprise the following steps:
I. during weld preparation, the gas circuit of floating installation 6 enters state as shown in Figure 7, the first two-position three-way valve 631 and the 3rd two-position three-way valve 633 are in closed condition, the second two-position three-way valve 632 is in opening, and air-flow flows in the inner chamber of floating cylinder 66 piston belows through the second pressure regulator valve 62, check valve 65, the second two-position three-way valve 632, three-way pipe 67 and the second one-way throttle valve 642 from lower gas port; Now, pipe fitting positioning device 10 is positioned at preparation position as shown in Figure 1;
Ii. after completing weld preparation work, the gas circuit of floating installation 6 enters state as shown in Figure 8, the first two-position three-way valve 631 is in opening, the second two-position three-way valve 632 and the 3rd two-position three-way valve 633 are in closed condition, air-flow is through the first pressure regulator valve 61, the first two-position three-way valve 631 and the first one-way throttle valve 641 flow in the inner chamber of floating cylinder 66 piston tops from upper gas port, the gas of floating cylinder 66 pistons belows from lower gas port through the second one-way throttle valve 642, three-way pipe 67 and the second two-position three-way valve 632 are discharged from the exhaust outlet of described the second two-position three-way valve 632, now, pipe fitting positioning device 10 drops to working position, and the pipe fitting 91 being arranged on pipe fitting positioning device 10 offsets with the joint 92 being arranged on bottom electrode 73,
Iii. at described pipe fitting positioning device 10, drop to after working position, the gas circuit of floating installation 6 enters state as shown in Figure 9, the first two-position three-way valve 631 and the second two-position three-way valve 632 are in opening, the 3rd two-position three-way valve 633 is in closed condition, air-flow is through the first pressure regulator valve 61, the first two-position three-way valve 631 and the first one-way throttle valve 641 flow in the inner chamber of floating cylinder 66 piston tops from upper gas port, air-flow is through the second pressure regulator valve 62 simultaneously, check valve 65, the second two-position three-way valve 632, three-way pipe 67 and the second one-way throttle valve 642 flow in the inner chamber of floating cylinder 66 piston belows from lower gas port, the air pressure of the first pressure regulator valve 61 gas outlets is greater than the air pressure of the second pressure regulator valve 62 gas outlets, now, pipe fitting positioning device 10 enters suspended state,
Iv. at pipe fitting positioning device 10, enter after suspended state, start welding job as shown in Figure 2, weld cylinder 71 drives top electrode 72 to compress pipe fitting 91 and joint 92 energising downwards and welds; Because pipe fitting positioning device 10 is in suspended state, pipe fitting 91 also together declined with top electrode 72 in the moment of fusing, and pipe fitting 91 and joint 92 are further compressed;
V. after welding finishes, the gas circuit of floating installation 6 enters state as shown in figure 10, the first two-position three-way valve 631 is in closed condition, the second two-position three-way valve 632 and the 3rd two-position three-way valve 633 are in opening, air-flow flows into from lower gas port through the 3rd two-position three-way valve 633, three-way pipe 67 and the second one-way throttle valve 642 in the inner chamber of floating cylinder 66 piston belows, and the gas of floating cylinder 66 piston tops is discharged from the exhaust outlet of described the first two-position three-way valve 631 through the first one-way throttle valve 641 and the first two-position three-way valve 631 from upper gas port; Now, pipe fitting positioning device 10 rises to preparation position as shown in Figure 1.
Preferably, at described floating cylinder 66, be also provided with the sensor for detection of piston position, for the residing position of perception pipe fitting positioning device 10, described sensor is connected with described PLC.
More excellent, in step I v, according to the pressure of weld cylinder, adjust the draught head of the first pressure regulator valve 61 and the second pressure regulator valve 62, thereby make pipe fitting 91 still maintenance level when further declining.
Can be by regulating the second one-way throttle valve 642 to control from the flow of 66 gas port exhausts of floating cylinder, to realize the control to pipe fitting positioning device 10 decrease speeds in step I i; In step v, the flow of gas port exhaust from floating cylinder 66 can be controlled by adjusting the first one-way throttle valve 641, to realize the control to pipe fitting positioning device 10 rates of climb; Described the first pressure regulator valve 61, the second pressure regulator valve 62, the first two-position three-way valve 631, the second two-position three-way valve 632, the 3rd two-position three-way valve 633, the first one-way throttle valve 641 and the second one-way throttle valve 642 also can use the product of other kinds, also can be by Artificial Control; Floating installation 6 can also be used other gas circuits of prior art, only needs to control described pipe fitting positioning device 10 and moves up and down and can make pipe fitting positioning device 10 float.
The response speed that is compared to oil hydraulic system is slow, spring be subject to pressure pressure inaccuracy, directly perceived, operability is poor, the floating installation response of the utility model welder is fast, pressure regulates accurately, adjustable pressure scope is wide and adaptability, workable.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a welder, comprising: pipe fitting positioning device (10), top electrode (72), bottom electrode (73), the weld cylinder (71) and the control device that drive described top electrode (72) to move up and down; Described weld cylinder (71) drives top electrode (72) to compress pipe fitting (91) and joint (92) energising downwards and welds; It is characterized in that:
Described pipe fitting positioning device (10) comprises support member (1) and the tensioning mechanism for tensioner pipe fitting inner wall to be welded, and described support member (1) comprises the ringfeder (11) that a plurality of front and back are slidably connected successively, the ringfeder seat (13) that is folded in the cushion rubber (12) between two adjacent ringfeders (11) and is fixedly connected with rearmost end ringfeder (11); Described tensioning mechanism comprises pull bar (21) and the tension power set (22) that are connected with described pull bar (21) rear end; Described pull bar (21) inserts the axis hole of described a plurality of ringfeder (11), and its front end is fixed the top cover (23) that a restriction forefront ringfeder (11) outwards moves;
Described tension power set (22) by described pull bar (21), ringfeder (11) is applied to axial compression power makes adjacent two ringfeders (11) thus between distance diminish and push described cushion rubber (12), the described cushion rubber (12) being extruded thus deformation occurs makes external diameter become large tensioner location of realizing described pipe fitting inner wall.
2. welder according to claim 1, it is characterized in that: described pipe fitting positioning device (10) also comprises rotating mechanism, the rotary power unit (32) that this rotating mechanism comprises rotating shaft (31) and acts on this rotating shaft (31) rear portion, described rotating shaft (31) is anterior to be connected with described support member (1).
3. welder according to claim 2, it is characterized in that, described tensioning mechanism also comprises: be socketed on take-up pulley (24) that the outer and lateral surface of described rotating shaft (31) is provided with annular groove (241), can be socketed on the relative rotation the outer pushing clamping sleeve (25) of this take-up pulley (24) and be fixed on described pushing clamping sleeve (25) and inner side is positioned at the driving member (26) of described annular groove (241); The power of described tension power set (22) produces axle (221) and is connected with described pushing clamping sleeve (25); Described power produces axle (221) and pulls described pushing clamping sleeve (25), and this pushing clamping sleeve (25) pulls described take-up pulley (24) by described driving member (26).
4. welder according to claim 3, it is characterized in that: described pull bar (21) rear portion offers the first through hole (211), on described take-up pulley (24), offer the second through hole (242), on described rotating shaft (31), offer axially extended slotted hole (311); Described rotating shaft (31) inner chamber is inserted at described pull bar (21) rear portion, and a latch (28) links together described pull bar (21), take-up pulley (24) and rotating shaft (31) through described the first through hole (211), the second through hole (242) and slotted hole (311).
5. welder according to claim 3, it is characterized in that: described rotating shaft (31) both sides are provided with axially extended protruding key (312), described take-up pulley (24) inwall corresponding position is provided with two axial notches (243), and the described protruding key (312) of rotating shaft (31) both sides embeds respectively in two axial notches (243) of take-up pulley (24) and makes can only move axially relatively but can not relatively rotate between described take-up pulley (24) and rotating shaft (31).
6. welder according to claim 3, it is characterized in that: described driving member (26) comprises dead axle (261) and bearing (262), it is upper that described dead axle (261) is fixed on described pushing clamping sleeve (25), and described bearing (262) is positioned at the annular groove (241) in described take-up pulley (24) outside and pegs graft with this dead axle (261).
7. according to the welder described in claim 1 to 6 any one, it is characterized in that: also comprise the floating installation (6) that acts on described pipe fitting positioning device (10), this floating installation (6) comprises floating cylinder (66) and the supporting air-channel system of vertical setting;
Described floating cylinder (66) is double-acting cylinder, and its cylinder body is provided with the upper gas port communicating with piston top inner chamber and the lower gas port communicating with piston below inner chamber; The clutch end of described floating cylinder (66) is fixedly connected with pipe fitting positioning device (10); The upper gas port of described floating cylinder (66) is connected described air-channel system with lower gas port, the tolerance of controlling described air-channel system to adjust described floating cylinder (66) thus the air pressure of piston upper and lower changes the duty of described floating cylinder (66);
During welding, the inner chamber of the inner chamber of the piston of described floating cylinder (66) top and piston below is all filled with compressed air, makes described pipe fitting positioning device (10) in suspended state.
8. welder according to claim 7, is characterized in that: described air-channel system comprises: the upper gas circuit being communicated with the upper gas port of described floating cylinder (66) and Pneumatic assembly thereof and the lower gas circuit and the Pneumatic assembly thereof that are communicated with the lower gas port of described floating cylinder (66);
Described upper gas circuit and Pneumatic assembly thereof comprise the first pressure regulator valve (61), the first two-position three-way valve (631) and the first one-way throttle valve (641) being linked in sequence with body;
Described lower gas circuit and Pneumatic assembly thereof comprise the second pressure regulator valve (62), check valve (65), the second two-position three-way valve (632), the second one-way throttle valve (642) being linked in sequence with body, are also included in the 3rd two-position three-way valve (633) that forms bypass between described the second pressure regulator valve (62) entrance and the second two-position three-way valve (632) outlet.
9. welder according to claim 8, is characterized in that: described the first pressure regulator valve (61) and the second pressure regulator valve (62) are air pressure pressure regulator valve; Described the first two-position three-way valve (631), the second two-position three-way valve (632) and the 3rd two-position three-way valve (633) are magnetic valve; Described the first one-way throttle valve (641) and the second one-way throttle valve (642) are throughput choke valve;
Described the first pressure regulator valve (61), the second pressure regulator valve (62), the first two-position three-way valve (631), the second two-position three-way valve (632), the 3rd two-position three-way valve (633), the first one-way throttle valve (641) are all connected with described control device with the second one-way throttle valve (642).
10. welder according to claim 9, is characterized in that: at described floating cylinder (66), be also provided with the sensor for detection of piston position, described sensor is connected with described control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320884151.9U CN203725973U (en) | 2013-12-31 | 2013-12-31 | Resistance welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320884151.9U CN203725973U (en) | 2013-12-31 | 2013-12-31 | Resistance welding device |
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| CN203725973U true CN203725973U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320884151.9U Expired - Fee Related CN203725973U (en) | 2013-12-31 | 2013-12-31 | Resistance welding device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104741760A (en) * | 2013-12-31 | 2015-07-01 | 深圳市鹏煜威科技有限公司 | Resistance welding device |
| CN107745212A (en) * | 2017-08-22 | 2018-03-02 | 东莞市蓉工自动化科技有限公司 | A kind of sleeve precise positioning mash welder |
-
2013
- 2013-12-31 CN CN201320884151.9U patent/CN203725973U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104741760A (en) * | 2013-12-31 | 2015-07-01 | 深圳市鹏煜威科技有限公司 | Resistance welding device |
| CN107745212A (en) * | 2017-08-22 | 2018-03-02 | 东莞市蓉工自动化科技有限公司 | A kind of sleeve precise positioning mash welder |
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Granted publication date: 20140723 Termination date: 20161231 |