CN117840680A - Annular part welding tool - Google Patents
Annular part welding tool Download PDFInfo
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- CN117840680A CN117840680A CN202410256694.9A CN202410256694A CN117840680A CN 117840680 A CN117840680 A CN 117840680A CN 202410256694 A CN202410256694 A CN 202410256694A CN 117840680 A CN117840680 A CN 117840680A
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- 241001330002 Bambuseae Species 0.000 claims description 8
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- 239000011425 bamboo Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 239000010985 leather Substances 0.000 abstract description 5
- 210000001503 joint Anatomy 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 11
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- 238000010586 diagram Methods 0.000 description 5
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- 230000000694 effects Effects 0.000 description 3
- 235000013372 meat Nutrition 0.000 description 3
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- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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Abstract
The invention belongs to the technical field of tool fixtures, and particularly relates to an annular part welding tool, which comprises a bottom plate, an expansion assembly arranged on the bottom plate, a hoop assembly used for holding an annular part, and a plurality of mounting grooves formed in the circumference of the positioning ring, wherein the outer wall of the expansion assembly is in butt joint with the inner wall surfaces of a plurality of annular parts to be processed; and fixing holes are formed in the outer wall of the positioning ring between two adjacent mounting grooves and are used for mounting the welding gun assembly. The tool realizes complete clamping and fixing by adopting a mode of combining the inside and the outside to fix the annular piece, thereby avoiding the thermal deformation of the thin leather piece in the welding process; the anchor ear component of external compression roller can not interfere with the welding gun component, and can be welded after the anchor ear component is installed, so that the welding machine is convenient and quick.
Description
Technical Field
The invention belongs to the technical field of tool fixtures, and particularly relates to a ring-shaped part welding tool.
Background
Some annular thin-wall parts have the characteristics of complex structure, large size, very thin wall thickness, high precision requirement and the like. Referring to fig. 16, one of the thin-walled ring parts 10 includes an upper ring part 101, a middle ring part 102 and a lower ring part 103, which are spliced together, tapered, and integrally connected by welding.
For the conical annular thin-wall parts, the conical annular thin-wall parts are formed by welding a plurality of annular parts, and the clamping and fixing of the conical annular parts are very difficult in the welding process due to the existence of the conical degree, so that the problems of welding thermal deformation, sliding, end deformation, welding seam oxidation and the like are easily caused, vibration is generated during processing, the overall processing precision is lower, and the shape error is large.
For example, the reference CN104589099a discloses a tool for vertical lathe machining of annular tapered thin-walled parts and an application thereof, including: one end of a mandrel is fixed on the tool bottom plate; the expansion slide blocks are multiple, one end of each expansion slide block is used as a clamping surface, the end surface profile of each expansion slide block is matched with the curved surface of the inner wall surface of the workpiece to be processed, and the other end of each expansion slide block is used as a driving end, and the end surface of each expansion slide block is an inclined surface; the conical block is sleeved on the mandrel, the conical surface of the conical block is matched with the conical space, and the conical block can be driven to interact with the conical space, so that each bulging sliding block is driven to radially slide on the guide rail to enable the clamping surface of each bulging sliding block to be abutted against the inner wall of the workpiece, and the bulging sliding block is clamped and fixed for processing. The clamping fixture can clamp and fix the annular conical thin-wall part, ensures that the gap between the workpiece and the fixture is uniform and cannot axially slide during processing, so that the processing precision is high, and meanwhile, the disassembly and the assembly are convenient.
It can be seen that the above-mentioned comparison document provides a tool for expanding and fastening the conical thin-wall part, but the clamping device in the above-mentioned technical scheme adopts an expanding mode to clamp from inside to outside, and the external compression ring is not suitable for splice welding, because the compression ring can block the welding position; once the compression ring is removed, thermal deformation and welding seam oxidation of the thin leather piece can occur when the thin leather piece is heated in the welding process, so that the situation of loose clamping and slipping occurs, namely, when a plurality of conical thin leather pieces are spliced and welded, the thermal deformation cannot be guaranteed; in addition, the existing tool is welded in a naked mode, and various smoke can cause environmental protection problems during welding.
Disclosure of Invention
Aiming at the technical problems in the background technology, the invention provides a ring-shaped piece welding tool.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the utility model provides an annular piece welding frock, includes bottom plate and the tight subassembly that expands that sets up on the bottom plate, the outer wall of tight subassembly that expands and the interior wall face butt setting of a plurality of annular pieces of waiting to process to expand tightly the annular piece and fix in order to weld, still include the staple bolt subassembly that is used for holding the annular piece, the staple bolt subassembly includes the holding ring the same with annular piece outline, a plurality of mounting groove has been seted up to the holding ring circumference, rotatable being provided with the compression roller in the mounting groove, the compression roller is hugged closely the outer wall face setting of annular piece;
and fixing holes are formed in the outer wall of the positioning ring between two adjacent mounting grooves and are used for mounting the welding gun assembly.
Optionally, the annular parts are at least provided with two parts, and the contact surfaces of the adjacent annular parts are welding surfaces; the compression roller is provided with annular avoidance grooves, the number of the avoidance grooves is consistent with that of the welding surfaces, and the avoidance grooves are arranged opposite to the welding surfaces; the number of the fixing holes is consistent with that of the welding surfaces, and the fixing holes are opposite to the welding surfaces.
Optionally, the press rolls are provided with a plurality of press rolls, at least one of the press rolls comprises a mandrel, outer rolls and inner rolls, the mandrel is provided with a plurality of outer rolls in a rotatable manner at a fixed distance, the mandrel between two adjacent outer rolls is provided with an inner roll, and the outer diameter of the inner roll is smaller than the outer diameter of the outer roll, so that an annular avoiding groove is formed between the two adjacent outer rolls and the inner roll; a plurality of chain throwing assemblies are uniformly distributed on the circumference of the inner roller; the two ends of the mandrel are rotatably arranged in the mounting groove, one end of the mandrel is provided with a first bevel gear, the outer wall of the positioning ring is provided with a first motor, the output shaft of the first motor is connected with a second bevel gear, and the second bevel gear and the first bevel gear are in meshed connection.
Optionally, the expansion assembly comprises an expansion slide block, a positioning bolt, a limiting seat and a taper sleeve,
a positioning bolt is fixed at the center of the bottom plate, and a plurality of U-shaped limiting seats are uniformly distributed on the bottom plate along the circumferential direction; one end of the expansion slide block is used as a clamping part, the end surface contour of the expansion slide block is matched with the curved surface of the inner wall surface of a workpiece to be processed, the other end of the expansion slide block is used as a driving part, the end surface of the driving part is an inclined surface, the driving part is provided with a sliding part, and the sliding part is tightly clung to the inner wall of the limiting seat in a sliding manner, so that the clamping parts of a plurality of expansion slide blocks can be surrounded into an annular contour to be used for being abutted against the inner wall surfaces of a plurality of annular parts to be processed, the inclined surface of the driving part is surrounded into a conical space, and the positioning bolt penetrates through the conical space;
the conical sleeve is sleeved on the positioning bolt, the conical surface of the conical sleeve is connected with the inclined surface of the driving part in a matched manner, and the expansion sliding block can be pushed to transversely slide to abut against the inner wall surface of the annular piece by screwing the conical sleeve;
the bottom plate circumference equipartition has a plurality of locating pin, be provided with logical groove on the sliding part, the locating pin is located logical groove, and is connected through spring one between locating pin and the logical groove.
Optionally, the staple bolt subassembly includes the gland that is used for compressing tightly the ring-shaped piece up end, bottom plate and gland are fixed through a plurality of connecting bolt connection.
Optionally, an air inlet is formed in one side of the clamping part, a plurality of split air passages communicated with the air inlet are formed in the annular outer wall of the clamping part, the number of the split air passages is consistent with that of the welding surfaces, and the split air passages are respectively opposite to the welding surfaces; the gland is provided with a ring pipe, the ring pipe is provided with a plurality of branch pipes, the branch pipes penetrate through the gland and are connected with the air inlet holes, and the gland is provided with an air outlet joint.
Optionally, the upper end of taper sleeve is provided with semicircular snap ring, the cover is equipped with a tight section of thick bamboo in top on the positioning bolt, the bottom of tight section of thick bamboo in top is provided with annular spacing portion, spacing portion card is established in the snap ring, threaded connection has lock nut on the positioning bolt, the tight section of thick bamboo setting in top is hugged closely to lock nut bottom, tight section of thick bamboo in top stretches out the gland upper end setting.
Optionally, be provided with annular flow distribution plate on the flow distribution air flue, be provided with a plurality of venthole on the flow distribution plate.
Optionally, an annular sealing part is arranged at the upper end of the positioning ring, and an exhaust interface is arranged on the sealing part; the bottom end of the positioning ring is provided with an annular connecting part; the bottom plate is provided with a rotary table, and the rotary table is detachably connected with the connecting part.
Optionally, a welding shell knocking mechanism is fixed on the outer wall surface of the positioning ring, guide holes are formed in the positioning ring, the number of the guide holes is the same as that of the fixing holes, and the fixing holes and the guide holes are positioned on the same horizontal circular ring; a guide cylinder is arranged on the guide hole; the welding shell knocking mechanism comprises a piston cylinder and a piston arranged on the inner wall of the piston cylinder in a sliding manner, the tail end of the piston is connected with a bracket, the tail end of the bracket is provided with a sliding hole, and the upper end of the sliding hole is provided with a positioning cover; the guide cylinder is arranged in the sliding hole in a sliding way, a knocking hammer is slidably arranged on the inner wall of the guide cylinder, and a second spring is arranged between the knocking hammer and the positioning cover.
The invention has the following advantages and beneficial effects:
in the invention, an expansion assembly is adopted firstly, so that the outer wall of the expansion assembly is abutted against the inner wall surfaces of a plurality of annular parts to be processed, and the annular parts are expanded and fixed for welding; meanwhile, a hoop assembly for holding the annular piece is arranged, the hoop assembly comprises a positioning ring with the same outline as the annular piece, and a plurality of compression rollers which are tightly attached to the outer wall surface of the annular piece are arranged on the circumference of the positioning ring; and a fixing hole for extending the welding gun assembly into the positioning ring for welding is formed in the outer wall of the positioning ring. The inner side of the welding gun is fixed by adopting the expansion assembly, the outer side of the welding gun is pressed by using the pressing roller, the welding gun synchronously rotates along the annular joint along with the positioning ring in the welding process, and the pressing roller is always clung to the outer wall of the thin-skin piece. Namely, a mode of combining the inside and the outside to fix the annular piece is adopted, so that complete clamping and fixing can be realized, and the situation that the thin leather piece is heated and deformed thermally in the welding process is avoided; the external compression roller type anchor ear component can not interfere with the welding gun component, the welding gun component and the anchor ear component are integrally designed, and welding operation can be performed after the anchor ear component is installed, so that the welding machine is convenient and quick; further, the anchor ear supports through the compression roller, encloses through the holding ring and keeps off, can collect the gas that produces in the welding process, realizes green welding.
Drawings
FIG. 1 is a schematic structural view of an outer expansion fixed ring of a welding tool provided by the invention;
FIG. 2 is a half cross-sectional view of FIG. 1;
fig. 3 is a schematic structural diagram of a welding tool provided by the invention;
FIG. 4 is a half cross-sectional view of FIG. 3;
fig. 5 is a schematic structural diagram of a welding tool (without a gland) provided by the invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at a;
FIG. 7 is a schematic diagram of an expanding slider according to the present invention;
FIG. 8 is a schematic diagram II of the structure of the expansion slider according to the present invention;
FIG. 9 is a half cross-sectional view of an expansion slider provided by the present invention;
FIG. 10 is a schematic view of the structure of the cone sleeve according to the present invention;
fig. 11 is a schematic structural view of the hoop assembly provided by the invention;
FIG. 12 is a half cross-sectional view of FIG. 11;
fig. 13 is a schematic structural view of a press roller according to embodiment 2 of the present invention;
fig. 14 is a schematic structural view of a hoop assembly clamping ring provided by the present invention;
FIG. 15 is an enlarged view of a portion of FIG. 14 at b;
FIG. 16 is a half cross-sectional view of a ring provided by the present invention;
fig. 17 is a structural sectional view of a press roller provided in embodiment 3 of the present invention;
fig. 18 is a schematic structural view of a limiting seat provided by the present invention;
FIG. 19 is a schematic view of a connection structure between a welding shell knocking mechanism and a positioning ring according to the present invention;
FIG. 20 is an enlarged view of a portion of FIG. 19 at c;
FIG. 21 is a schematic diagram of a structure in which the shell-welding knocking mechanism is uniformly distributed on the circumference of the positioning ring;
FIG. 22 is an enlarged view of a portion of FIG. 21 at d;
icon: 1-bottom plate, 11-press block, 12-center hole, 13-locating pin, 14-spring I, 15-bottom ring, 16-fixing seat, 17-bearing I, 18-turntable, 2-locating bolt, 21-fixing screw, 22-locking nut, 23-spanner, 3-taper sleeve, 31-snap ring, 32-clamping groove, 33-locating hole, 4-tightening cylinder, 41-limit part, 5-expansion slide block, 5 a-gap, 51-driving part, 511-sliding part, 512-through groove, 52-upper clamping part, 53-middle clamping part, 54-lower clamping part, 55-air inlet hole, 551-main air passage, 552-branch air passage, 56-branch air passage, 57-split plate, 571-air outlet holes, 6-limit seats, 61-connecting holes, 7-gland covers, 71-connecting bolts, 72-air outlet connectors, 8-ring pipes, 81-branch pipes, 9-positioning rings, 91-sealing parts, 911-air outlet connectors, 92-connecting parts, 921-collecting rings, 93-mounting grooves, 94-compression rollers, 94 a-avoidance grooves, 941-outer rollers, 9411-second bearings, 942-inner rollers, 943-spindles, 944-third bearings, 9421-chain throwing assemblies, 945-first bevel gears, 946-second bevel gears, 947-first motors, 95-fixed holes, 96-guide holes, 97-motor seats, 971-second motors, 972-cranks, connecting rods, 973-piston barrels, 974-pistons, 9741-driving rod, 9742-spring three, 975-bracket, 9751-slide hole, 976-guide cylinder, 977-knocking hammer, 978-positioning cover, 979-spring two, 98-driving ring, 981-convex ring, 982-groove, 10-ring piece, 10 a-welding surface, 101-upper ring piece, 102-middle ring piece and 103-lower ring piece.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 to 6, 14 and 16, the annular part welding fixture comprises a bottom plate 1 and an expansion assembly arranged on the bottom plate 1, wherein the outer wall of the expansion assembly is in butt joint with the inner wall surfaces of a plurality of annular parts 10 to be processed, so that the annular parts 10 are expanded and fixed for welding.
Referring to fig. 16, one of the ring members 10 includes an upper ring member 101, a middle ring member 102 and a lower ring member 103, which are spliced together to form a cone shape, and the splice positions are welding surfaces 10a and are integrally connected by welding. The tool disclosed by the invention is applied to clamping and welding processing of parts formed by splicing a plurality of conical thin-skin parts, but is not limited to the structure.
As shown in fig. 11-15, the tooling of the invention further comprises a hoop assembly for holding the annular piece 10, wherein the hoop assembly comprises a positioning ring 9 with the same outline as the annular piece 10, namely, the positioning ring 9 is also conical, and the taper of the positioning ring is consistent with that of the annular piece 10; the circumference of the positioning ring 9 is uniformly provided with a plurality of mounting grooves 93, a pressing roller 94 is rotatably arranged in the mounting grooves 93, and the pressing roller 94 is used for being tightly attached to the outer wall surface of the annular piece 10. In this way, the outer wall of the annular member 10 is pressed from outside to inside by the pressing roller 94, and meanwhile, a cavity is formed between the positioning ring 9 and the annular member 10 in a surrounding manner and is used for collecting and containing gas generated in the welding process, so that closed welding is realized, and green welding is realized.
The fixed orifices 95 have been seted up to the holding ring 9 outer wall between two adjacent mounting grooves 93, and the fixed orifices 95 are used for installing welder subassembly, promptly install welding assembly on holding ring 9, and both integrated designs can directly carry out welding operation after having installed the staple bolt subassembly, have further simplified clamping and welded process, and two processes combine to be one, can realize the clamping welding fast.
Example 2
In the welding process, the surface of the welding surface 10a protrudes to a certain extent after being welded, and the pressing roller 94 is directly attached to the outer wall of the annular member 10, so that the pressing roller 94 is made of a high-temperature-resistant material in consideration of heating of the annular member 10 in the welding process. However, the surface of the press roller 94 is directly in hard contact with the welding flesh, so that the press roller 94 is stressed, the positioning ring 9 is stressed and displaced, and the problem of clamping dislocation occurs.
In view of the above, an optimal design is further made on the basis of embodiment 1.
As shown in fig. 11 to 13 and 16, in the present invention, the ring 10 is formed by joining three ring members (an upper ring member 101, a middle ring member 102 and a lower ring member 103), and the contact surface of the adjacent ring members 10 is a welding surface 10a. For the processed part, an annular avoidance groove 94a (as shown in fig. 13) is arranged on the press roll 94, the number of the avoidance grooves 94a is 2 and is consistent with that of the welding surfaces 10a, and the avoidance grooves 94a are arranged opposite to the welding surfaces 10 a; meanwhile, the number of the fixing holes 95 is 2 as well as the number of the welding surfaces 10a, and the fixing holes 95 are arranged opposite to the welding surfaces 10a.
Referring to fig. 14 and 15, after the positioning ring 9 is mounted, the pressing roller 94 is closely attached to the outer wall surface of the annular member 10, and the avoiding groove 94a is just right on the welding surface 10a, that is, the welded meat formed after welding is located inside the avoiding groove 94a, so that interference movement with the pressing roller 94 does not occur. When the positioning ring 9 rotates and/or the annular piece 10 rotates (both modes can be used for realizing welding), the welding device can be pressed by the pressing roller 94, the welding position can not interfere with the pressing roller 94 in the welding process, the positioning clamping precision in the welding process is ensured, and the welding quality is ensured.
For how to weld, the first mode, the anchor ear subassembly is fixed, and bottom plate 1 can rotate, and when bottom plate 1 was rotatory, can drive the annular piece 10 on the bottom plate 1 rotatory realization circumference welding.
The second way is that the hoop assembly rotates, the base plate 1 is fixed, and the ring 10 is fixed. Referring to fig. 14 and 15, in this way, a fixing seat 16 may be provided on the base plate 1, a first bearing 17 is installed on the inner wall of the fixing seat 16, a turntable 18 is installed on the inner wall of the first bearing 17, and the bottom end of the positioning ring 9 is detachably connected with the turntable 18. On this basis, a driving mechanism is provided to drive the turntable 18 to rotate, for example: a gear ring may be provided on the turntable 18 to drive the turntable 18 in a rotational movement by means of a gear transmission.
Example 3
As described in embodiment 2, the welding surface 10a is welded to form a circle of raised welding flesh, and the welding surface is welded to form a welding shell, if the single welding is qualified, the welded annular piece 10 can be disassembled, and then the welding shell is removed and polished; whether a weld is satisfactory depends on the particular requirements and the choice of welding process, and if the weld quality and strength requirements are high, multiple welds may be required to ensure the firmness and quality of the welded joint. In the face of the problems, the anchor ear assembly is required to be detached firstly, then the welding shell on the surface layer of the welding meat is removed, the anchor ear assembly is installed again, and the welding is performed again. Therefore, the mode is complex in operation and requires multiple clamping.
And further making an optimal design aiming at the technical problems.
Because the positioning ring 9 is uniformly provided with the plurality of press rolls 94 on the circumference, at least one press roll 94 is different from other common press rolls 94 in design, and the design is needed to be made, so that the effect of removing the welding shell is achieved.
Referring to fig. 11 and 17, the press roll 94 includes a mandrel 943, outer rolls 941 and inner rolls 942, wherein a plurality of outer rolls 941 are rotatably disposed on the mandrel 943 at a fixed distance through a second bearing 9411, an inner roll 942 is fixed on the mandrel 943 between two adjacent outer rolls 941, and the outer diameter of the inner roll 942 is smaller than the outer diameter of the outer roll 941, so that an annular avoiding groove 94a is formed between the two adjacent outer rolls 941 and the inner roll 942; the circumference of the inner roller 942 is uniformly distributed with a plurality of chain throwing components 9421, the chain throwing components 9421 can be steel wire ropes, steel wire balls, metal chains, etc., and the chain throwing components 9421 can be replaced, for example, annular sand paper with certain elasticity, annular steel wire balls, etc., and are wrapped on the outer wall of the inner roller 942. Two ends of the mandrel 943 are rotatably arranged in the mounting groove 93 through a bearing three 944, one end of the mandrel 943 is provided with a bevel gear one 945, the outer wall of the positioning ring 9 is provided with a motor one 947, an output shaft of the motor one 947 is connected with a bevel gear two 946, and the bevel gear two 946 and the bevel gear one 945 are in meshed connection. When the hoop assembly is installed, the outer roller 941 is disposed against the outer wall of the ring 10. In the welding process, the positioning ring 9 is assumed to perform rotary motion, the welding operation is performed synchronously, and when the press roller 94 reaches the welding position, the motor one 947 drives the inner roller 942 to rotate rapidly, drives the chain throwing assembly 9421 to rotate, and strikes the welding shell, so that the welding shell is removed. The mode can be used for processing the welding shell during welding, so that the welding shell can be cleaned without disassembling the anchor ear assembly, and secondary welding can be realized.
In one of the above ways, the structure of the press roller 94 is designed so that the weld shell can be removed while welding.
The invention also provides another mode, namely, a welding shell knocking mechanism is arranged on the outer wall of the positioning ring 9. Referring to fig. 19 and 20, the positioning ring 9 is provided with 2 guide holes 96, the number of the guide holes 96 is the same as that of the fixing holes 95, and the fixing holes 95 and the guide holes 96 are positioned on the same horizontal circular line (as shown in fig. 11). A guide cylinder 976 is arranged on the guide hole 96; the welding shell knocking mechanism comprises a piston cylinder 973 and a piston 974 which is arranged on the inner wall of the piston cylinder 973 in a sliding manner, wherein the piston cylinder 973 is fixed on the outer wall of a positioning ring 9 between two guide holes 96, guide grooves are formed in two sides of the bottom end of the piston cylinder 973, the tail end of the piston 974 is connected with a T-shaped support 975, two ends of the support 975 extend out of the piston cylinder 973 from the guide grooves, the tail end of the support 975 is provided with a sliding hole 9751, and the upper end of the sliding hole 9751 is in threaded connection with a positioning cover 978; the guide cylinder 976 is arranged in the sliding hole 9751 in a sliding manner, a knocking hammer 977 is slidably arranged on the inner wall of the guide cylinder 976, and the upper end of the knocking hammer 977 can slide close to an inner hole of the positioning cover 978; the knocking hammer 977 and the positioning cover 978 are connected by a second spring 979.
In operation, a driving device is arranged to drive the piston 974 to reciprocate, as a mode, a motor seat 97 is arranged at the bottom end of the positioning ring 9, a motor II 971 is fixed on the motor seat 97, the motor II 971 is in transmission with a crank and a connecting rod 972, one end of the crank and the connecting rod 972 is hinged with the piston 974, and accordingly the piston 974 is driven to reciprocate through the motor II 971. Note that, in the telescoping process, the support 975 will not contact the positioning ring 9 all the time, its stroke needs to be designed, when support 975 stretches into to ring-shaped member 10, drives to strike the hammer 977 and stretches out and strike the welding shell from guiding cylinder 976, and the existence of spring two 979 avoids striking the hammer 977 and welding the meat rigid contact, plays certain cushioning effect, withdraws again in guiding cylinder 976 after striking. In this way, the reciprocating motion is knocked to achieve rapid removal of the weld shell.
As shown in fig. 21 and 22, a plurality of welding shell knocking mechanisms can be arranged along the circumference of the positioning ring 9 so as to realize a more thorough knocking effect. A driving ring 98 may be provided to replace the second motor 971 for driving, the driving ring 98 is rotatably disposed on the outer wall of the positioning ring 9, and the inner wall of the driving ring 98 is formed by a plurality of spaced convex rings 981 and grooves 982 in smooth transition. One end of the piston 974 is a driving rod 9741, and one end of the driving rod 9741 is slidably connected with the surfaces of the convex ring 981 and the groove 982. A third spring 9742 is provided between the piston 974 and the piston cylinder 973. In this structure, only one driving mechanism is designed to rotate the driving ring 98, so that the pistons 974 can be controlled to perform telescopic motion, and finally the knocking hammer 977 is driven to perform reciprocating knocking.
For the two modes of removing the welding shell, the welding shell is removed and then directly falls into a cavity between the positioning ring 9 and the annular piece 10, reaches the bottom end and is clamped between the positioning ring 9 and the annular piece 10, so that the rotating movement of the positioning ring 9 and the annular piece 10 is blocked, and meanwhile, the welding shell enters a gap between the positioning ring 9 and the annular piece 10 when the positioning ring and the annular piece 10 relatively rotate, so that the annular piece 10 is worn.
As shown in fig. 15 and 19, for the above problem, an annular collecting ring 921 may be disposed on the inner wall of the bottom end of the positioning ring 9, where the collecting ring 921 and the inner wall of the positioning ring 9 together form an annular collecting groove, and the inner wall of the upper end of the collecting ring 921 is tightly attached to the outer wall of the annular member 10, so that when the welding shell falls down by knocking, the welding shell is collected in the collecting ring 921, thereby ensuring the clamping positioning accuracy of the positioning ring 9 and the annular member 10, and avoiding the abrasion of the annular member 10 caused by the welding shell added in the gap between the two, resulting in positioning problem.
Example 4
The invention designs the expansion assembly.
As shown in fig. 1 to 10 and 18, the expansion assembly comprises an expansion sliding block 5, a positioning bolt 2, a limiting seat 6, a taper sleeve 3 and the like.
The bottom end of the bottom plate 1 is provided with a bottom ring 15, and when welding is realized by rotating the annular piece 10, the bottom ring 15 is driven to rotate. The center of the bottom plate 1 is provided with a center hole 12, the positioning bolt 2 passes through the center hole 12, and the bottom of the positioning bolt 2 is fixed on the bottom plate 1 through a fixing screw 21.
A plurality of U-shaped limit seats 6 are uniformly distributed on the bottom plate 1 along the circumferential direction, connecting holes 61 are formed in the periphery of the limit seats 6, and the limit seats 6 are detachably fixed on the bottom plate 1 through the connecting holes 61.
The end surface contour of the expanding slide block 5 is used as a clamping part to match with the curved surface of the inner wall surface of the workpiece to be processed, the other end surface of the expanding slide block 5 is used as a driving part 51, the end surface of the driving part 51 is an inclined surface, the driving part 51 is provided with a sliding part 511, the sliding part 511 is tightly clung to the inner wall of the limit seat 6 and is arranged in a sliding mode, therefore, the clamping parts of the expanding slide blocks 5 can be enabled to enclose into an annular contour to be used for being abutted against the inner wall surfaces of the annular pieces 10 to be processed, the inclined surfaces of the driving parts 51 enclose into a conical space, and the positioning bolts 2 penetrate through the conical space. In the invention, the number of the limiting seats 6 and the expansion sliding blocks 5 is set to 6.
The taper sleeve 3 is internally provided with a central hole 12, the taper sleeve 3 is sleeved on the positioning bolt 2 through a positioning hole 33, the conical surface of the taper sleeve 3 is connected with the inclined surface of the driving part 51 in a matched mode, and the expansion sliding block 5 can be pushed to transversely slide to be abutted against the inner wall surface of the annular piece 10 by screwing the taper sleeve 3.
A plurality of locating pins 13 are uniformly distributed on the circumference of the base plate 1, through grooves 512 are formed in the sliding parts 511, the locating pins 13 are located in the through grooves 512, and the locating pins 13 are connected with the through grooves 512 through springs 14. When the taper sleeve 3 is not pressed, the first springs 14 enable the plurality of expansion sliding blocks 5 to shrink inwards, and at the moment, the diameter of the outer wall formed by the plurality of expansion sliding blocks 5 is slightly smaller than that of the inner wall of the annular piece 10, so that the annular piece 10 is convenient to install. When the taper sleeve 3 is pressed, the first spring 14 is compressed, and the outward ends of the plurality of expansion sliding blocks 5 stretch to tightly press the inner wall of the annular piece 10 to realize fixation. The design of this kind of structure is convenient for realize the installation of expanding slider 5 and spring one 14, is convenient for realize the installation of ring part 10, presss from both sides tightly.
Further, the anchor ear assembly comprises a gland 7 used for compressing the upper end face of the annular piece 10, the bottom plate 1 and the gland 7 are fixedly connected through a plurality of connecting bolts 71, and after being fixed through the expansion sliding block 5, the anchor ear assembly is compressed through the gland 7, so that the reliability of fixation is ensured.
Further, the upper end of the positioning ring 9 is provided with an annular sealing part 91, the sealing part 91 is closely arranged on the upper portion of the annular member 10, the sealing part 91 is provided with an exhaust interface 911, and the exhaust interface 911 is externally connected with an air extractor, so that gas generated during welding can be exhausted, and the welding environment protection is ensured. The bottom end of the positioning ring 9 is provided with an annular connecting part 92, and the connecting part 92 is detachably connected with the turntable 18.
Example 5
In order to avoid the problem of oxidation of the welding seam, an optimal design is further made.
As shown in fig. 1 to 9, according to the ring 10 including the upper ring 101, the middle ring 102, and the lower ring 103, the clamping portion is adaptively designed, which includes: an upper clamping portion 52, a middle clamping portion 53 and a lower clamping portion 54. An air inlet hole 55 is formed in one side of the clamping portion, 2 split air passages 56 are formed in the annular outer wall of the clamping portion, and the upper clamping portion 52, the middle clamping portion 53 and the lower clamping portion 54 are separated through the two split air passages 56. The clamping portion is internally provided with a main flow air passage 551 communicated with the air inlet 55, two branch flow air passages 552 are communicated with the main flow air passage 551, and the branch flow air passages 552 are respectively communicated with the branch flow air passages 56. The number of the split air passages 56 is identical to that of the welding surfaces 10a, and the split air passages 56 are respectively arranged opposite to the welding surfaces 10a. The gland 7 is provided with a ring pipe 8, the ring pipe 8 is provided with a plurality of branch pipes 81, the branch pipes 81 penetrate through the gland 7 and are connected with the air inlet holes 55, and the gland 7 is provided with an air outlet joint 72.
An annular flow dividing plate 57 is arranged on the flow dividing air passage 56, and a plurality of air outlet holes 571 are arranged on the flow dividing plate 57.
A gap 5a is formed between two adjacent expansion sliding blocks 5, protective gas is flushed into the annular pipe 8, reaches the inside of each expansion sliding block 5 through a plurality of branch pipes 81, sequentially reaches the split air passage 56 through the air inlet hole 55, the main air passage 551 and the branch air passage 552, uniformly flows out through the air outlet hole 571 on the split plate 57, reaches the position of the welding surface 10a, and plays a role in protecting welding seams; the gap 5a between two adjacent expansion sliding blocks 5 is also filled by the air flow of the diversion air passage 56, so that the welding seam at the position is ensured to be protected; the remaining internal air is exhausted through the air outlet connector 72 to ensure that the inner cavity of the ring 10 is filled with the shielding gas. The structure can ventilate a plurality of expansion sliding blocks 5 at the same time, quickly exhaust gas and ensure welding quality.
As shown in fig. 4 and 10, further, the upper end of the taper sleeve 3 is provided with a semicircular snap ring 31, a clamping groove 32 is arranged in the snap ring 31, a tightening cylinder 4 is sleeved on the positioning bolt 2, an annular limiting part 41 is arranged at the bottom end of the tightening cylinder 4, the limiting part 41 is clamped in the clamping groove 32, a locking nut 22 is connected with the positioning bolt 2 in a threaded manner, the bottom end of the locking nut 22 is tightly attached to the tightening cylinder 4, and the tightening cylinder 4 extends out to the upper end of the gland 7 to be arranged. Namely, the taper sleeve 3 can be pressed by rotating the locking nut 22, so that the sliding and abutting of the expansion sliding block 5 are realized.
Referring to fig. 2 and 7, the height of the sliding portion 511 is lower than that of the driving portion 51 and the clamping portion, that is, when the sliding portion 511 slides against the limiting seat 6, the sliding portion can be limited, and when the expanding slider 5 slides outwards to reach the maximum position, the driving portion 51 is pressed against the limiting seat 6 to be limited, so that the maximum external dimension of the expanding slider 5 can be ensured to be restrained, and the external dimension of the ring 10 is prevented from being changed due to expansion of the external support.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an annular piece welding frock, includes the bottom plate and sets up the tight subassembly that expands on the bottom plate, the outer wall of tight subassembly expands and the internal face butt setting of a plurality of annular pieces of waiting to process to expand tightly fixedly with the annular piece and weld, its characterized in that:
the hoop assembly is used for holding the annular piece and comprises a positioning ring with the same outline as the annular piece, a plurality of mounting grooves are formed in the circumference of the positioning ring, press rolls are rotatably arranged in the mounting grooves, and the press rolls are tightly attached to the outer wall surface of the annular piece;
and fixing holes are formed in the outer wall of the positioning ring between two adjacent mounting grooves and are used for mounting the welding gun assembly.
2. The ring welding fixture of claim 1, wherein: the annular parts are at least provided with two parts, and the contact surfaces of the adjacent annular parts are welding surfaces; the compression roller is provided with annular avoidance grooves, the number of the avoidance grooves is consistent with that of the welding surfaces, and the avoidance grooves are arranged opposite to the welding surfaces; the number of the fixing holes is consistent with that of the welding surfaces, and the fixing holes are opposite to the welding surfaces.
3. The ring welding fixture of claim 2, wherein: the press rolls are provided with a plurality of press rolls, at least one of the press rolls comprises a mandrel, outer rolls and inner rolls, the mandrel is provided with a plurality of outer rolls in a rotatable manner at a fixed distance, the mandrel between two adjacent outer rolls is provided with an inner roll, and the outer diameter of the inner roll is smaller than that of the outer rolls, so that an annular avoidance groove is formed between the two adjacent outer rolls and the inner roll; a plurality of chain throwing assemblies are uniformly distributed on the circumference of the inner roller; the two ends of the mandrel are rotatably arranged in the mounting groove, one end of the mandrel is provided with a first bevel gear, the outer wall of the positioning ring is provided with a first motor, the output shaft of the first motor is connected with a second bevel gear, and the second bevel gear and the first bevel gear are in meshed connection.
4. The ring welding fixture of claim 1, wherein: the expansion assembly comprises an expansion slide block, a positioning bolt, a limiting seat and a taper sleeve,
a positioning bolt is fixed at the center of the bottom plate, and a plurality of U-shaped limiting seats are uniformly distributed on the bottom plate along the circumferential direction; one end of the expansion slide block is used as a clamping part, the end surface contour of the expansion slide block is matched with the curved surface of the inner wall surface of a workpiece to be processed, the other end of the expansion slide block is used as a driving part, the end surface of the driving part is an inclined surface, the driving part is provided with a sliding part, and the sliding part is tightly clung to the inner wall of the limiting seat in a sliding manner, so that the clamping parts of a plurality of expansion slide blocks can be surrounded into an annular contour to be used for being abutted against the inner wall surfaces of a plurality of annular parts to be processed, the inclined surfaces of a plurality of driving parts are surrounded into a conical space, and the positioning bolts penetrate through the conical space;
the conical sleeve is sleeved on the positioning bolt, the conical surface of the conical sleeve is connected with the inclined surface of the driving part in a matched manner, and the expansion sliding block can be pushed to transversely slide to abut against the inner wall surface of the annular piece by screwing the conical sleeve;
the bottom plate circumference equipartition has a plurality of locating pin, be provided with logical groove on the sliding part, the locating pin is located logical groove, and is connected through spring one between locating pin and the logical groove.
5. The ring welding fixture of claim 4, wherein: the hoop assembly comprises a gland used for compressing the upper end face of the annular piece, and the bottom plate and the gland are fixedly connected through a plurality of connecting bolts.
6. The ring welding fixture of claim 5, wherein: an air inlet is formed in one side of the clamping part, a plurality of flow dividing air passages communicated with the air inlet are formed in the annular outer wall of the clamping part, the number of the flow dividing air passages is consistent with that of the welding surfaces, and the flow dividing air passages are respectively opposite to the welding surfaces; the gland is provided with a ring pipe, the ring pipe is provided with a plurality of branch pipes, the branch pipes penetrate through the gland and are connected with the air inlet holes, and the gland is provided with an air outlet joint.
7. The ring welding fixture of claim 5, wherein: the upper end of taper sleeve is provided with semicircular snap ring, the cover is equipped with a tight section of thick bamboo in top on the positioning bolt, the bottom of tight section of thick bamboo in top is provided with annular spacing portion, spacing portion card is established in the snap ring, threaded connection has lock nut on the positioning bolt, the tight section of thick bamboo setting in top is hugged closely to the lock nut bottom, tight section of thick bamboo in top stretches out the gland upper end setting.
8. The ring welding fixture of claim 6, wherein: the split-flow air channel is provided with an annular split-flow plate, and the split-flow plate is provided with a plurality of air outlet holes.
9. The ring welding fixture of claim 1, wherein: the upper end of the positioning ring is provided with an annular sealing part, and the sealing part is provided with an exhaust interface; the bottom end of the positioning ring is provided with an annular connecting part; the bottom plate is provided with a rotary table, and the rotary table is detachably connected with the connecting part.
10. The ring welding fixture of claim 2, wherein: the welding shell knocking mechanism is fixed on the outer wall surface of the positioning ring, guide holes are formed in the positioning ring, the number of the guide holes is the same as that of the fixing holes, and the fixing holes and the guide holes are positioned on the same horizontal circular ring; a guide cylinder is arranged on the guide hole; the welding shell knocking mechanism comprises a piston cylinder and a piston arranged on the inner wall of the piston cylinder in a sliding manner, the tail end of the piston is connected with a bracket, the tail end of the bracket is provided with a sliding hole, and the upper end of the sliding hole is provided with a positioning cover; the guide cylinder is arranged in the sliding hole in a sliding way, a knocking hammer is slidably arranged on the inner wall of the guide cylinder, and a second spring is arranged between the knocking hammer and the positioning cover.
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