CN113953644A

CN113953644A - Two-way friction stir welding equipment suitable for dissimilar plate butt joint usefulness

Info

Publication number: CN113953644A
Application number: CN202111355708.5A
Authority: CN
Inventors: 左都全; 罗强; 马国玲; 周长春; 付尧明
Original assignee: Chongqing Three Gorges University; Civil Aviation Flight University of China
Current assignee: Chongqing Three Gorges University; Civil Aviation Flight University of China
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-01-21
Anticipated expiration: 2041-11-16
Also published as: CN113953644B

Abstract

The invention discloses a bidirectional friction stir welding device suitable for butt joint of dissimilar plates, which comprises a dissimilar alloy plate to be butt jointed, a friction stir welding body, a seat plate, a material seat, a conveying device, a motor and a transmission device, wherein the conveying device comprises a driving conveying roller and a driven conveying roller, a first rubber strip and a second rubber strip are respectively arranged on the two conveying rollers, a welding bin is fixedly connected onto the seat plate, a clamping plate is arranged in the welding bin, the transmission device comprises a transmission shaft and a driving bevel gear, and also comprises an adjusting device and a tensioning device, the adjusting device comprises a track plate, an adjusting screw rod, an adjusting seat and a connecting plate, and the tensioning device comprises a tensioning roller and a guide roller. In the welding process, the two plates have pressure pointing to the welding position, and the welding effect is improved.

Description

Two-way friction stir welding equipment suitable for dissimilar plate butt joint usefulness

Technical Field

The invention relates to plate butt joint equipment made of dissimilar alloy materials, in particular to bidirectional friction stir welding equipment suitable for butt joint of dissimilar plates.

Background

The two plates made of different alloy materials are generally butted in a welding mode, and compared with the traditional gas shielded welding, the friction stir welding is used as a novel solid phase connection method, so that the defects of air holes, cracks and the like of an aluminum alloy melting welding head are effectively overcome, and the method has the advantages of small joint residual stress and deformation, environmental protection, no pollution and the like.

The patent publication numbers are: chinese patent CN201410135852.1 discloses a friction stir welding device, which comprises a magnetic adsorption type automatic trolley carrying platform and a friction stir welding mechanism; the back rigid support can be automatically provided, so that the size of a machined welding line is not limited by the size of a machine tool any more, and the assembly site machining of a large-scale shell structure can be realized without a fixed use site.

However, the above patents still have the following disadvantages:

first, since the single-side welding is performed, there are problems of large upsetting force, incomplete back welding, root defects, and the like in the welding process.

And secondly, the conveying and feeding of the plates are carried out through the driving wheels, and when the plate conveying and feeding device is used specifically, the positions of the upper pair of driving wheels and the lower pair of driving wheels cannot be adjusted, so that sufficient pressure and friction force between the upper pair of driving wheels and the lower pair of driving wheels and the plates cannot be guaranteed, and the conveying and feeding effects of the plates cannot be guaranteed.

Thirdly, in the welding process, the two butted plates do not have pressing force pointing to the welding line, so that the welding effect is poor.

Disclosure of Invention

In order to solve the problems, the invention provides a bidirectional friction stir welding device suitable for butt joint of dissimilar plates, and the bidirectional friction stir welding device is realized through the following technical scheme.

A bidirectional friction stir welding device suitable for butt joint of dissimilar plates comprises dissimilar alloy plates to be butt jointed, a friction stir welding body, a seat plate, a material seat, a conveying device, a motor and a transmission device, wherein the base plate is arranged on the base plate; the right side of the upper surface of the seat plate is fixedly connected with a welding bin, a left side plate and a right side plate of the welding bin are symmetrically provided with a feed inlet and a discharge outlet, a friction stir welding body is fixedly connected to a top plate of the welding bin, the bottom of the friction stir welding body is provided with a rotary mounting seat, a top plate of the welding bin is provided with a through groove for the rotary mounting seat to pass through, the bottom of the rotary mounting seat is fixedly connected with an upper shaft shoulder, a bottom plate of the welding bin is rotatably connected with a shaft rod, the top of the shaft rod is fixedly connected with a lower shaft shoulder, one side of the upper shaft shoulder and the lower shaft shoulder, which are close to each other, is in a circular truncated cone shape, a stirring head is fixedly connected between the upper shaft shoulder and the lower shaft shoulder, the material seat is fixedly connected to the upper surface of the seat plate and is positioned on the left side of the welding bin, the conveying device is driven conveying rollers and driving conveying rollers symmetrically arranged on the upper side and the lower side of the feed inlet, and the motor is fixedly connected to the lower surface of the seat plate, the motor drives the driving conveying roller to rotate through the transmission device, and the driving conveying roller rotates clockwise when viewed from the front to the back direction.

Furthermore, a trough is formed in the upper surface of the trough seat, an opening surface, a transition surface and a guide surface are sequentially arranged on the front side and the rear side of the trough along the left-to-right direction, the width between the guide surfaces is equal to the sum of the widths of the two butt-joint plates, and rollers are densely distributed at the bottom of the trough.

Further, the inside front and back symmetry in welding storehouse is equipped with splint, and the splint of front and back both sides are connected through the curb plate around first spring holder and welding storehouse respectively, the front side the perk forward of both ends about the splint, the rear side the perk backward of both ends about the splint.

Further, a roller is transversely and uniformly connected to the horizontal part of the clamping plate in a rotating mode.

Furthermore, limiting plates are symmetrically arranged in the welding bin up and down, the upper limiting plate and the lower limiting plate are respectively connected with the upper shaft shoulder and the lower shaft shoulder in a sliding mode, the upper limiting plate and the lower limiting plate are respectively connected with the upper side plate and the lower side plate of the welding bin through second spring seats, the left end and the right end of the limiting plate are tilted upwards, and the left end and the right end of the limiting plate are tilted downwards.

Further, the transmission device comprises a transmission shaft and a driving bevel gear; the driving conveying roller is rotatably connected to the left side of the welding bin through a first rotating shaft, driving wheels are symmetrically and fixedly connected to the front end and the rear end of the first rotating shaft, first lug seats are symmetrically and fixedly connected to the front end and the rear end of the lower surface of the seat plate, the transmission shaft is rotatably connected between the first lug seats, driving wheels corresponding to the driving wheels are fixedly connected to the front end and the rear end of the transmission shaft, the driving wheels are located under the corresponding driving wheels, the corresponding driving wheels and the corresponding driving wheels are linked through belts, the motor is provided with a horizontal left output shaft, an axle seat is further fixedly connected to the lower surface of the seat plate, the output shaft is rotatably connected to the axle seat, the driving bevel gear is fixedly connected to the head of the output shaft, driven bevel gears are symmetrically and fixedly connected to the transmission shaft, and the two driven bevel gears are meshed with the driving bevel gear in the front side and the rear side.

The device further comprises an adjusting device and a tensioning device, wherein the adjusting device comprises a track plate, an adjusting screw rod, an adjusting seat and a connecting plate; symmetrical rigid coupling is in the left side in welding storehouse around the track board, and each track board sliding connection has first track piece and the second track piece that corresponds with initiative conveying roller and driven conveying roller, the initiative conveying roller rotates through first pivot to be connected between first track piece, driven conveying roller rotates through the second pivot to be connected between the second track piece, the front side in welding storehouse has the second ear seat in pairs of rigid coupling, adjusting screw rotates to be connected between the second ear seat, adjust seat sliding connection in the front side in welding storehouse, adjust the seat still with adjusting screw meshing, adjust the upper and lower both sides of seat articulated the one end of connecting plate, the head rigid coupling of each connecting plate have the commentaries on classics cover, two upper and lower commentaries on classics covers rotate with second pivot and first commentaries on classics cover respectively and are connected, and initiative conveying roller passes through overspeed device with the belt tensioning when reciprocating.

Further, overspeed device tensioner includes tensioning roller and guide roll, the guide way has been seted up to bilateral symmetry around the bedplate, the rigid coupling has the guide bar in the guide way, and bilateral symmetry is equipped with guide block in pairs in each guide way, guide block and guide bar sliding connection are overlapped on the guide bar between the guide block in pairs and are equipped with the tensioning spring, the tensioning roller rotates the outside of connecting at the guide block, the equal rectangular array in both sides has four guide rolls around the bedplate, the belt linkage is between guide roll, tensioning roller, drive wheel and drive wheel, and the belt is the cross, the cornerite more than or equal to 180 of belt and drive wheel, when first track piece is located the bottommost of track board, the tensioning spring is in natural state.

Furthermore, the front and back symmetry of the driving conveying roller is provided with first rubber strips which are opposite in turning direction, the front and back symmetry of the driven conveying roller is provided with second rubber strips which are opposite in turning direction, the first rubber strips extend clockwise spirally along the direction of the center of the driving conveying roller pointing to the rear side, and the second rubber strips extend counterclockwise spirally along the direction of the center of the driven conveying roller pointing to the rear side.

The invention has the beneficial effects that:

1. treat that the heterogeneous panel of butt joint places on the material seat, the motor passes through transmission and drives initiative conveying roller rotation, thereby carry panel from a left side to the right side and feed, can drive initiative conveying roller and driven conveying roller through adjusting device and press from both sides panel tightly, thereby provide certain pressure, and then guarantee to have sufficient frictional force and be used for carrying panel, at the in-process of regulation, guarantee through overspeed device tensioner that the belt is in the state of tensioning all the time and make belt and drive wheel have sufficient cornerite, guarantee driven reliability.

2. In the welding process, through the arrangement of the upper shaft shoulder, the lower shaft shoulder 17 and the stirring head 18, the friction stir welding is simultaneously carried out on the upper side and the lower side of the plate, and the problems of large upsetting force, incomplete back welding, root defects and the like are solved.

3. In the welded process, the pressure of two plates pointing to the welding position is provided through the clamping plate, the welding effect is improved, the friction force of conveying and feeding can be guaranteed through the arrangement of the first rubber strip and the second rubber strip, and the pressure of the two plates pointing to the welding position can be further provided.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive labor.

FIG. 1: the invention relates to an axonometric view of bidirectional friction stir welding equipment suitable for butt joint of dissimilar plates;

FIG. 2: the invention relates to an axonometric view of a bidirectional friction stir welding device for butt joint of dissimilar plates when the plates are removed;

FIG. 3: the invention discloses a power connection schematic diagram of a motor and a transmission shaft;

FIG. 4: the internal structure of the welding bin is schematic;

FIG. 5: the invention discloses a matching schematic diagram of a limiting plate, an upper shaft shoulder and a lower shaft shoulder 17;

FIG. 6: the structure of the splint is schematic;

FIG. 7: the invention discloses a schematic diagram of a transmission device, an adjusting device and a tensioning device;

FIG. 8: the invention relates to a transverse sectional view of the position of a welding bin;

FIG. 9: the invention relates to a longitudinal section of the welding bin position;

FIG. 10: schematic view of the tensioner of the present invention;

FIG. 11: the invention discloses a stress analysis schematic diagram of the contact position of an active conveying roller and a plate;

FIG. 12: the invention discloses a stress analysis schematic diagram of a contact position of a driven conveying roller and a plate.

The reference numbers are as follows:

a-sheet material, B-friction stir welding body;

1-seat plate, 11-welding bin, 12-feeding port, 13-discharging port, 14-rotary mounting seat, 15-upper shaft shoulder, 16-shaft rod, 17-lower shaft shoulder 17, 18-stirring head 18;

2-material seat, 21-material groove, 22-opening surface, 23-transition surface, 24-guide surface and 25-roller;

31-driven conveying roller, 32-driving conveying roller, 33-first rubber strip, 34-second rubber strip;

4-a motor;

51-transmission shaft, 52-driving bevel gear, 53-first rotating shaft, 54-transmission wheel, 55-first lug seat, 56-driving wheel, 57-belt, 58-output shaft, 59-shaft seat and 510-driven bevel gear;

61-a clamping plate, 62-a first spring seat, 63-a roller, 64-a limiting plate and 65-a second spring seat;

71-a track plate, 72-an adjusting screw rod, 73-an adjusting seat, 74-a connecting plate, 75-a first track block, 76-a second track block, 77-a second rotating shaft, 78-a second lug seat and 79-a rotating sleeve;

81-tensioning roller, 82-guiding roller, 83-guiding groove, 84-guiding rod, 85-guiding block, 86-tensioning spring.

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.

As shown in fig. 1-12, the present invention has the following six embodiments.

Example 1

A bidirectional friction stir welding device suitable for butt joint of dissimilar plates comprises a dissimilar alloy plate A to be butt jointed, a friction stir welding body B, a seat plate 1, a material seat 2, a conveying device, a motor 4 and a transmission device; a welding bin 11 is fixedly connected to the right side of the upper surface of the seat plate 1, a feed inlet 12 and a discharge outlet 13 are symmetrically arranged on a left side plate and a right side plate of the welding bin 11, a friction stir welding body B is fixedly connected to a top plate of the welding bin 11, a rotary mounting seat 14 is arranged at the bottom of the friction stir welding body B, a through groove for the rotary mounting seat 14 to pass through is arranged on the top plate of the welding bin 11, an upper shaft shoulder 15 is fixedly connected to the bottom of the rotary mounting seat 14, a shaft rod 16 is rotatably connected to a bottom plate of the welding bin 11, a lower shaft shoulder 17 is fixedly connected to the top of the shaft rod 16, one side, close to each other, of the upper shaft shoulder 15 and the lower shaft shoulder 17 is in a circular truncated cone shape, a stirring head 18 is fixedly connected between the upper shaft shoulder 15 and the lower shaft shoulder 17, a material seat 2 is fixedly connected to the upper surface of the seat plate 1 and is positioned on the left side of the welding bin 11, a conveying device is positioned on the left side of the welding bin 11, the conveying device is a driven conveying roller 31 and a driving conveying roller 32 which are symmetrically arranged on the upper side and the lower side of the feed inlet 12, the motor 4 is fixedly connected to the lower surface of the seat plate 1, the motor 4 drives the driving conveying roller 32 to rotate through a transmission device, and the driving conveying roller 32 rotates clockwise when viewed from the front to the back direction.

In this embodiment:

this equipment is applicable to the butt joint of two same width panel A, and during the use, two xenogenesis panel A that wait to dock are placed on material seat 2, and panel A's right-hand member is taken and is put in feed inlet 12, and two panel A's butt joint position aims at agitator head 18.

Two panel A are by the centre gripping between initiative conveying roller 32 and driven conveying roller 31, motor 4 during operation drives initiative conveying roller 32 through transmission and rotates, thereby carry panel A from the left right side, rotatory mount pad 14 is driven to friction stir welding body B during operation, go up shoulder 15, the stirring head 18, lower shoulder 17 and axostylus axostyle 16 synchronous revolution, and then go up shoulder 15, stirring head 18 and lower shoulder 17 carry out welded fastening in panel A's upper and lower both sides, upset power when can solving one-way friction stir welding is big, the back is not welded through and root defect scheduling problem.

Example 2

The difference from embodiment 1 is that the following is also included:

the upper surface of the material seat 2 is provided with a trough 21, the front side and the rear side of the trough 21 are sequentially provided with an opening surface 22, a transition surface 23 and a guide surface 24 along the left-to-right direction, the width between the guide surfaces 24 is equal to the sum of the widths of the two butt-jointed plates A, and the bottom of the trough 21 is densely provided with rollers 25.

Preferably, the welding bin 11 is provided with clamping plates 61 symmetrically in the front and rear direction, the clamping plates 61 on the front and rear sides are connected with the front and rear side plates of the welding bin 11 through first spring seats 62, the left and right ends of the front clamping plate 61 tilt forward, and the left and right ends of the rear clamping plate 61 tilt backward.

Preferably, a roller 63 is laterally and uniformly rotatably connected to the horizontal portion of the clamp plate 61.

Preferably, limiting plates 64 are symmetrically arranged in the welding bin 11 up and down, the upper limiting plate 64 and the lower limiting plate 64 are respectively connected with the upper shaft shoulder 15 and the lower shaft shoulder 17 in a sliding manner, the upper limiting plate 64 and the lower limiting plate 64 are respectively connected with the upper side plate and the lower side plate of the welding bin 11 through second spring seats 65, the left end and the right end of the upper limiting plate 64 are tilted upwards, and the left end and the right end of the lower limiting plate 64 are tilted downwards.

In this embodiment:

the panel A of butt joint is placed in silo 21, then promotes panel A right, and at this in-process, through opening the direction in proper order of face 22 and transition face 23 for panel A docks between spigot surface 24, and setting up through roller 25 makes panel A's slip more convenient, and panel A docks the back of accomplishing, adjusts panel A's position, makes panel A's left end and right-hand member align, takes panel A's right-hand member again and puts in feed inlet 12.

Conveyor during operation carries panel A from a left side to the right side, in this process, panel A enters into between the splint 61, splint 61 provides the pressure of two panel A directional welding position through first spring holder 62, improve welded effect, splint 61's both sides perk sets up, when initial condition, the distance that can set up between two splint 61's the horizontal part is less than two panel A's width sum, then when panel A carries from a left side to the right side, the position that perk was gone up to accessible splint 61 enters into between two splint 61 smoothly, at this moment, first spring holder 62 receives the extrusion, and then provide two panel A pressures.

In the process that panel A carried from a left side to the right side, still got into between the limiting plate 64, the perk on the limiting plate 64 is the convenience panel A equally and gets into between the limiting plate 64, and the limiting plate 64 provides panel A holding power and pressure through second spring holder 65, reduces the deformation in the welding process.

Example 3

The difference from embodiment 2 is that the following contents are also included:

the transmission includes a transmission shaft 51 and a drive bevel gear 52; the driving conveying roller 32 is rotatably connected to the left side of the welding cabin 11 through a first rotating shaft 53, driving wheels 54 are symmetrically and fixedly connected to the front end and the rear end of the first rotating shaft 53, first lug seats 55 are symmetrically and fixedly connected to the front end and the rear end of the lower surface of the seat plate 1, a transmission shaft 51 is rotatably connected between the first lug seats 55, driving wheels 56 corresponding to the driving wheels 54 are fixedly connected to the front end and the rear end of the transmission shaft 51, the driving wheels 56 are located right below the corresponding driving wheels 54, the corresponding driving wheels 56 and the driving wheels 54 are linked through a belt 57, a horizontal leftward output shaft 58 is arranged on the motor 4, a shaft seat 59 is further fixedly connected to the lower surface of the seat plate 1, the output shaft 58 is rotatably connected to the shaft seat 59, the driving bevel gear 52 is fixedly connected to the head of the output shaft 58, driven bevel gears 510 are symmetrically and fixedly connected to the transmission shaft 51, and the two driven bevel gears 510 are meshed with the driving bevel gears 52 on the front side and the rear side.

In this embodiment:

the embodiment discloses a specific structure of a transmission device, the motor 4 drives the output shaft 58 and the drive bevel gear 52 to rotate when in operation, the drive bevel gear 52 drives the driven bevel gear 510, the transmission shaft 51 and the drive wheel 56 to rotate, the drive wheel 56 drives the transmission wheel 54 to rotate through the belt 57, so that the first rotating shaft 53 and the drive conveying roller 32 rotate, and the plate A is conveyed from left to right through clockwise rotation of the drive conveying roller 32.

Example 4

The difference from embodiment 3 is that the following is also included:

the device also comprises an adjusting device and a tensioning device, wherein the adjusting device comprises a track plate 71, an adjusting screw 72, an adjusting seat 73 and a connecting plate 74; the track plates 71 are symmetrically and fixedly connected to the left side of the welding cabin 11 in a front-back mode, a first track block 75 and a second track block 76 corresponding to the driving conveying roller 32 and the driven conveying roller 31 are connected to the left side of the welding cabin 11 in a sliding mode, the driving conveying roller 32 is connected between the first track blocks 75 in a rotating mode through a first rotating shaft 53, the driven conveying roller 31 is connected between the second track blocks 76 in a rotating mode through a second rotating shaft 77, second lug seats 78 are fixedly connected to the front side of the welding cabin 11 in pairs, adjusting screws 72 are connected between the second lug seats 78 in a rotating mode, adjusting seats 73 are connected to the front side of the welding cabin 11 in a sliding mode, the adjusting seats 73 are further meshed with the adjusting screws 72, one ends of connecting plates 74 are hinged to the upper side and the lower side of the adjusting seats 73, rotating sleeves 79 are fixedly connected to the heads of the connecting plates 74, the upper rotating sleeves 79 and the lower rotating sleeves 79 are connected with the second rotating shaft 77 and the first rotating shaft 53 in a sleeving mode respectively, and the driving conveying roller 32 tensions the belt 57 through a tensioning device when moving up and down.

In this embodiment:

the embodiment discloses a concrete structure of adjusting device, adjusts the distance of initiative conveying roller 32 and driven conveying roller 31 for panel A through adjusting device to make initiative conveying roller 32 and driven conveying roller 31 exert certain pressure to panel A in panel A's below and top respectively, and then make and have sufficient frictional force, thereby make panel A's transport and feed more stable.

Adjusting screw 72 can drive adjusting seat 73 when rotating and carry out the removal about, adjusting seat 73 passes through connecting plate 74 and changes 79 first pivot 53 of pulling and second pivot 77 for first pivot 53 and second pivot 77 are close to or keep away from panel A simultaneously, and then can adjust the height of initiative conveying roller 32 and driven conveying roller 31, panel A is pressed from both sides tightly between initiative conveying roller 32 and driven conveying roller 31, initiative conveying roller 32 is at the in-process that reciprocates, can be so that belt 57 is in the state of tensioning all the time through overspeed device tensioner.

Example 5

The difference from embodiment 4 is that the following is also included:

the tensioning device comprises a tensioning roller 81 and guide rollers 82, guide grooves 83 are symmetrically formed in the front side and the rear side of the seat plate 1, guide rods 84 are fixedly connected into the guide grooves 83, paired guide blocks 85 are symmetrically arranged in the left side and the right side of each guide groove 83, the guide blocks 85 are slidably connected with the guide rods 84, tensioning springs 86 are sleeved on the guide rods 84 between the paired guide blocks 85, the tensioning rollers 81 are rotatably connected to the outer sides of the guide blocks 85, four guide rollers 82 are arranged in the front side and the rear side of the seat plate 1 in a rectangular array mode, a belt 57 is linked between the guide rollers 82, the tensioning rollers 81, a driving wheel 56 and a driving wheel 54, the belt 57 is in a cross shape, the wrap angle of the belt 57, the driving wheel 54 and the driving wheel 56 is larger than or equal to 180 degrees, and when the first track block 75 is located at the bottommost of the track plate 71, the tensioning springs 86 are in a natural state.

In this embodiment:

the embodiment discloses a specific structure of the tensioning device, and the belt 57 can be always in a tensioned state through the tensioning device in the process that the driving conveying roller 32 moves up and down, and the belt 57 is ensured to have a sufficiently large wrap angle with the driving wheel 54 and the driving wheel 56, so that the stability and reliability of the transmission are ensured.

Assuming that the initial state is set, the first rail block 75 and the second rail block 76 are respectively located at the bottommost portion and the topmost portion of the rail plate 71, and the driving feed roller 32 and the driven feed roller 31 are respectively located at the high point and the low point, and the tension spring 86 is in a natural state.

When the adjusting seat 73 is moved rightward by the adjusting screw 72, the adjusting seat 73 pulls the driving feed roller 32 upward and the driven feed roller 31 downward through the connecting plate 74, and in the process, the transmission wheel 54 is lifted up to make the two guide blocks 85 approach each other, the tension spring 86 is compressed, the compression reaction force of the tension spring 86 acts on the two guide blocks 85 and the tension roller 81, and the tension roller 81 ensures that the belt 57 is always in a tensioned state.

The belt 57 is sufficiently angled with respect to the drive wheel 54 and the drive wheel 56 by the guide rollers 82.

Example 6

The difference from embodiment 5 is that the following is also included:

the front and back symmetry on the driving conveying roller 32 is provided with a first rubber strip 33 with opposite turning directions, the front and back symmetry on the driven conveying roller 31 is provided with a second rubber strip 34 with opposite turning directions, the first rubber strip 33 at the rear side spirally extends clockwise along the direction that the center of the driving conveying roller 32 points to the rear side, and the second rubber strip 34 at the rear side spirally extends anticlockwise along the direction that the center of the driven conveying roller 31 points to the rear side.

In this embodiment:

through the arrangement of the first rubber strip 33 and the second rubber strip 34, friction force of conveying and feeding can be ensured, and pressure of two plates A pointing to a welding position can be further provided.

The plate a was subjected to force analysis in conjunction with fig. 11 and 12.

As shown in fig. 11, taking the first rubber strip 33 on the rear side as an example, analyzing the force applied to the plate material a, the contact position of the first rubber strip 33 and the plate material a is located above the first rubber strip 33, the initial contact position of the plate material a and the first rubber strip 33 is point a, when the driving conveying roller 32 rotates clockwise with the first rubber strip 33, the moving direction of the plate material a relative to the first rubber strip 33 is La, the friction force applied to the plate material a is Fa due to the opposite friction force to the relative movement, and the plate material a has a horizontal component Fa1 and a vertical component Fa2 according to the parallelogram law, the component Fa1 conveys the plate material a from left to right, and the component Fa2 has a forward pushing force to the plate material a on the rear side.

Conversely, the first rubber strip 33 on the front side also pushes the plate a on the front side to the right and has a backward pushing force.

As shown in fig. 12, taking the second rubber strip 34 on the front side as an example, analyzing the stress condition of the plate material a, the contact position of the second rubber strip 34 and the plate material a is located below the second rubber strip 34, and assuming that the initial contact position of the plate material a and the second rubber strip 34 is point b, the plate material a receives a component Fb1 in the horizontal direction and a component Fb2 in the vertical direction, the component Fb1 pushes the plate material a to move to the right, and the component Fb2 has a backward pushing force on the plate material a on the front side.

Conversely, the second rubber strip 34 on the rear side also pushes the plate a on the rear side to the right and has a forward pushing force.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a two-way friction stir welding equipment suitable for xenogenesis panel butt joint is used, includes the xenogenesis alloy panel and the friction stir welding body of treating the butt joint, its characterized in that: the device also comprises a seat plate, a material seat, a conveying device, a motor and a transmission device; the right side of the upper surface of the seat plate is fixedly connected with a welding bin, a left side plate and a right side plate of the welding bin are symmetrically provided with a feed inlet and a discharge outlet, a friction stir welding body is fixedly connected to a top plate of the welding bin, the bottom of the friction stir welding body is provided with a rotary mounting seat, a top plate of the welding bin is provided with a through groove for the rotary mounting seat to pass through, the bottom of the rotary mounting seat is fixedly connected with an upper shaft shoulder, a bottom plate of the welding bin is rotatably connected with a shaft rod, the top of the shaft rod is fixedly connected with a lower shaft shoulder, one side of the upper shaft shoulder and the lower shaft shoulder, which are close to each other, is in a circular truncated cone shape, a stirring head is fixedly connected between the upper shaft shoulder and the lower shaft shoulder, the material seat is fixedly connected to the upper surface of the seat plate and is positioned on the left side of the welding bin, the conveying device is driven conveying rollers and driving conveying rollers symmetrically arranged on the upper side and the lower side of the feed inlet, and the motor is fixedly connected to the lower surface of the seat plate, the motor drives the driving conveying roller to rotate through the transmission device, and the driving conveying roller rotates clockwise when viewed from the front to the back direction.

2. The bidirectional friction stir welding device suitable for butt joint of dissimilar plates according to claim 1, wherein: the material groove is formed in the upper surface of the material seat, an opening surface, a transition surface and a guide surface are sequentially arranged on the front side and the rear side of the material groove along the left-to-right direction, the width between the guide surfaces is equal to the sum of the widths of the two butt-joint plates, and rollers are densely distributed at the bottom of the material groove.

3. The bidirectional friction stir welding device suitable for butt joint of dissimilar plates according to claim 2, wherein: the welding storehouse is characterized in that clamping plates are symmetrically arranged in the welding storehouse in the front and back, the clamping plates on the front side and the back side are respectively connected with front and back side plates of the welding storehouse through first spring seats, the left end and the right end of each clamping plate tilt forwards, and the left end and the right end of each clamping plate tilt backwards.

4. The bidirectional friction stir welding device suitable for butt joint of dissimilar plates according to claim 3, wherein: the horizontal part of the clamping plate is transversely and uniformly connected with a roller in a rotating way.

5. The bidirectional friction stir welding device suitable for butt joint of dissimilar plates according to claim 3, wherein: limiting plates are symmetrically arranged in the welding bin up and down, the upper limiting plate and the lower limiting plate are respectively connected with the upper shaft shoulder and the lower shaft shoulder in a sliding mode, the upper limiting plate and the lower limiting plate are respectively connected with upper side plates and lower side plates of the welding bin through second spring seats, the left end and the right end of the limiting plate are tilted upwards above the limiting plates, and the left end and the right end of the limiting plate are tilted downwards below the limiting plates.

6. The bidirectional friction stir welding device suitable for butt joint of dissimilar plates according to claim 5, wherein: the transmission device comprises a transmission shaft and a driving bevel gear; the driving conveying roller is rotatably connected to the left side of the welding bin through a first rotating shaft, driving wheels are symmetrically and fixedly connected to the front end and the rear end of the first rotating shaft, first lug seats are symmetrically and fixedly connected to the front end and the rear end of the lower surface of the seat plate, the transmission shaft is rotatably connected between the first lug seats, driving wheels corresponding to the driving wheels are fixedly connected to the front end and the rear end of the transmission shaft, the driving wheels are located under the corresponding driving wheels, the corresponding driving wheels and the corresponding driving wheels are linked through belts, the motor is provided with a horizontal left output shaft, an axle seat is further fixedly connected to the lower surface of the seat plate, the output shaft is rotatably connected to the axle seat, the driving bevel gear is fixedly connected to the head of the output shaft, driven bevel gears are symmetrically and fixedly connected to the transmission shaft, and the two driven bevel gears are meshed with the driving bevel gear in the front side and the rear side.

7. The bidirectional friction stir welding device suitable for butt joint of dissimilar plates according to claim 6, wherein: the device also comprises an adjusting device and a tensioning device, wherein the adjusting device comprises a track plate, an adjusting screw rod, an adjusting seat and a connecting plate; symmetrical rigid coupling is in the left side in welding storehouse around the track board, and each track board sliding connection has first track piece and the second track piece that corresponds with initiative conveying roller and driven conveying roller, the initiative conveying roller rotates through first pivot to be connected between first track piece, driven conveying roller rotates through the second pivot to be connected between the second track piece, the front side in welding storehouse has the second ear seat in pairs of rigid coupling, adjusting screw rotates to be connected between the second ear seat, adjust seat sliding connection in the front side in welding storehouse, adjust the seat still with adjusting screw meshing, adjust the upper and lower both sides of seat articulated the one end of connecting plate, the head rigid coupling of each connecting plate have the commentaries on classics cover, two upper and lower commentaries on classics covers rotate with second pivot and first commentaries on classics cover respectively and are connected, and initiative conveying roller passes through overspeed device with the belt tensioning when reciprocating.

8. The apparatus according to claim 7, wherein the apparatus comprises: overspeed device tensioner includes tensioning roller and guide roll, the guide way has been seted up to bilateral symmetry around the bedplate, the rigid coupling has the guide bar in the guide way, and bilateral symmetry is equipped with guide block in pairs in each guide way, guide block and guide bar sliding connection, the cover is equipped with the tensioning spring on the guide bar between the guide block in pairs, the tensioning roller rotates the outside of connecting at the guide block, the equal rectangular array in both sides has four guide rolls around the bedplate, the belt links between guide roll, tensioning roller, drive wheel and drive wheel, and the belt is the cross, the cornerite more than or equal to 180 of belt and drive wheel, when first track piece is located the bottommost of track board, the tensioning spring is in natural state.

9. The apparatus according to claim 8, wherein the apparatus comprises: the driving conveying roller is symmetrically provided with first rubber strips in opposite rotating directions in a front-back mode, the driven conveying roller is symmetrically provided with second rubber strips in opposite rotating directions in a front-back mode, the first rubber strips extend in a clockwise spiral mode in the direction of the center of the driving conveying roller pointing to the rear side, and the second rubber strips extend in a counterclockwise spiral mode in the direction of the center of the driven conveying roller pointing to the rear side.