CN112548431A - Thin-wall cylinder assembling and welding fixture - Google Patents
Thin-wall cylinder assembling and welding fixture Download PDFInfo
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- CN112548431A CN112548431A CN202010832962.9A CN202010832962A CN112548431A CN 112548431 A CN112548431 A CN 112548431A CN 202010832962 A CN202010832962 A CN 202010832962A CN 112548431 A CN112548431 A CN 112548431A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0531—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor internal pipe alignment clamps
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Abstract
The invention discloses a thin-wall cylinder assembly welding fixture, which comprises a main frame assembly and a positioning assembly, wherein the main frame assembly comprises a bottom plate, a mounting ring arranged above the bottom plate and a plurality of vertical plates for connecting the bottom plate and the mounting ring, and the positioning assembly is arranged in a space enclosed by the mounting ring and the vertical plates; the positioning assembly comprises an external supporting mechanism and a circle-fixing clamping mechanism, the external supporting mechanism is arranged right above the circle-fixing clamping mechanism and is vertically connected with the circle-fixing clamping mechanism through a connecting piece, the external supporting mechanism is used for pressing the inner wall of the thin-wall cylinder, and the circle-fixing clamping mechanism is used for outwards supporting the inner wall of the thin-wall cylinder; the circle-fixing clamping mechanism is connected with the bottom plate through a plurality of guide shafts. The welding fixture for assembling the thin-wall cylinder bodies can be used for clamping and positioning the thin-wall cylinder bodies of various sizes and types, ensures the coaxiality and the precision of the thin-wall cylinder bodies, can be compatible with cylindrical or conical cylinder products of various specifications, improves the welding efficiency, ensures the forming precision of the products, and reduces the defective rate of production quality.
Description
Technical Field
The invention belongs to the technical field of machinery, and particularly relates to a thin-wall cylinder assembly welding fixture.
Background
At present, in the field of domestic engineering mechanical welding production, the thin-wall cylinder bodies such as thin-wall conical cylinders and thin-wall cylinders are assembled and welded by adopting manual direct operation without any tool. The coaxiality of the thin-wall cylinder body does not reach the standard due to the welding line of manual welding, the probability of repair due to unqualified products is greatly increased, the subsequent process precision is not guaranteed, the assembly and welding operation is seriously influenced, the efficiency is low, and the cost risk of enterprises is increased; and the randomness is too big without the help of the instrument during welding, and the specification of work piece is more, can't form batch production to can't satisfy the demand of market to this product to a certain extent. At present, due to market demands and national strategic demands, production equipment in the engineering machinery field needs to be innovated and upgraded urgently.
Therefore, technical innovation must be carried out on the original production equipment to a certain extent, so that the production requirement is met, the labor cost, the purchase cost and the maintenance cost are saved, and the product quality is guaranteed. In summary, it is urgently needed to provide a thin-wall cylinder assembly welding fixture with low cost, strong applicability, convenient operation, high safety, high product precision and high production efficiency so as to automatically adapt to clamping equipment, save production cost and labor cost and improve welding precision.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the thin-wall cylinder assembling and welding fixture is low in cost, high in applicability, convenient to operate, high in safety, high in product precision and high in production efficiency, automatically adapts to clamping equipment, saves production cost and labor cost, and improves welding precision.
In order to achieve the purpose, the invention adopts the technical scheme that:
a thin-wall cylinder assembly welding fixture comprises a main frame assembly and a positioning assembly, wherein the main frame assembly comprises a bottom plate, a mounting ring arranged above the bottom plate and a plurality of vertical plates connecting the bottom plate and the mounting ring, and the positioning assembly is arranged in a space enclosed by the mounting ring and the vertical plates; the positioning assembly comprises an external supporting mechanism and a circle-fixing clamping mechanism, the external supporting mechanism is arranged right above the circle-fixing clamping mechanism and is vertically connected with the circle-fixing clamping mechanism through a connecting piece, the external supporting mechanism is used for pressing the inner wall of the thin-wall barrel, and the circle-fixing clamping mechanism is used for supporting the inner wall of the thin-wall barrel outwards; the circle-fixing clamping mechanism is connected with the bottom plate through a plurality of guide shafts.
On the basis of the scheme, in another improved scheme, the outer supporting mechanism comprises an upper platform, a driving rod fixed in the middle of the platform and a plurality of double-crank rocker assemblies, one end of each double-crank rocker assembly is hinged with the driving rod, the other end of each double-crank rocker assembly is connected with the surface of the platform in a sliding mode, and the driving rod drives the double-crank rocker assemblies to approach or separate from each other when moving vertically; decide circle clamping mechanism include down the platform, be fixed in a plurality of on the platform decide circle mechanism, connect adjacently down decide circle mechanism's coupling mechanism and actuating mechanism, decide circle mechanism includes two outer vaulting poles, actuating mechanism drives a plurality ofly decide circle mechanism's two outer vaulting poles at certain angle within range internal rotation, be provided with a plurality ofly on the platform down the guiding axle.
On the basis of the scheme, in another improved scheme, notches are formed in positions, corresponding to the double outer support rods of the circle fixing mechanism, of the upper platform, tail ends of the double outer support rods respectively extend out of the corresponding notches, and the tail ends of the double outer support rods can rotate in the notches.
On the basis of the scheme, in another improved scheme, the upper platform is provided with a plurality of linear sliding blocks, the double-crank rocker assembly comprises a connecting rod, an outer supporting clamping rod and a sliding block seat, the top end of the connecting rod is hinged to the driving rod, the bottom end of the connecting rod is hinged to the top end of the outer supporting clamping rod, the bottom end of the outer supporting clamping rod is hinged to the sliding block seat, and the sliding block seat is matched with the linear sliding blocks to realize sliding connection.
On the basis of the scheme, in another improved scheme, the surface of the lower platform is further provided with a plurality of sliding rails, the circle fixing mechanism further comprises an installation seat, a rack and a gear, the rack and the gear are meshed with each other, the gear is rotatably connected onto the installation seat through a connecting shaft, a sliding groove matched with the sliding rails is formed in the bottom side of the rack, the head ends of the double outer supporting rods are connected onto the connecting shaft, and the rack drives the gear and the connecting shaft to rotate when moving along the sliding rails, so that the double outer supporting rods are driven to swing by taking the connecting shaft as a fulcrum.
On the basis of the scheme, in another improved scheme, the lifting device further comprises a lifting power assembly arranged on the bottom side of the bottom plate, wherein the lifting power assembly comprises a lifting motor and a lifter, and the lifting motor drives the positioning assembly to vertically move by driving the lifter.
On the basis of the scheme, in another improved scheme, the lifting power assembly further comprises a speed reducer, the lifting motor is connected with the input end of the speed reducer, and the output end of the speed reducer is connected with the lifter.
On the basis of the scheme, in another improved scheme, the lifter is a worm gear lifter and comprises a worm gear and a worm, the worm penetrates through the bottom plate, and the worm gear is fixed on the bottom side surface of the bottom plate.
On the basis of the scheme, in another improved scheme, a plurality of linear bearings are arranged on the bottom plate, and the linear bearings are connected with the guide shaft.
On the basis of the scheme, in another modified scheme, still include the automatic subassembly that compresses tightly, the automatic subassembly that compresses tightly sets up at the collar upper surface, the automatic subassembly that compresses tightly includes mounting panel, driving motor, briquetting, first connecting piece, second connecting piece and screw drive mechanism, the mounting panel is fixed in the collar upper surface, screw drive mechanism is fixed in on the mounting panel, the briquetting pass through first connecting piece with the mounting panel is articulated, the briquetting pass through the second connecting piece with screw drive mechanism's top is articulated, driving motor drives screw drive mechanism vertical migration, screw drive mechanism drives the briquetting rotates.
On the basis of the scheme, in another improved scheme, the clamp device further comprises a manual pressing assembly, the manual pressing assembly is arranged on the mounting ring and comprises a fixing plate and a pressing plate, the fixing plate is fixedly arranged on the upper surface of the mounting ring, one end of the pressing plate is hinged to the fixing plate, and the other end of the pressing plate is fastened on the mounting plate through a bolt and a nut.
On the basis of the scheme, in another improved scheme, a plurality of vertically arranged circle fixing blocks are further arranged on the surface of the top side of the mounting ring, and the circle fixing blocks are perpendicular to the mounting ring.
On the basis of the scheme, in another improved scheme, the top side surface of the rounding block is provided with a rounding ring.
The technical scheme of the invention has the beneficial technical effects that:
the welding fixture for assembling the thin-wall barrels can be used for clamping and positioning the thin-wall barrels with different sizes and types, so that the coaxiality and the precision of the thin-wall barrels are ensured, and meanwhile, the welding fixture is compatible with cylindrical or conical barrel products with multiple specifications, the welding efficiency is improved, the forming precision of the products is ensured, and the defective rate of production quality is reduced; can be used together with peripheral equipment such as a positioner and the like, and realizes the automatic production of welding the thin-wall cylinder.
The positioning assembly comprises an outer support mechanism and a circle-fixing clamping mechanism, wherein the outer support mechanism is in a contracted state in an initial state, and when a thin-wall cylinder is placed on an upper platform, a driving rod moves downwards, and the outer diameter of a double-crank rocker assembly is expanded to realize a tightening state of a horizontal outer support; the outer supporting clamping rods are uniformly and externally supported through a plurality of double-crank rocker mechanisms uniformly distributed on the upper platform, so that the inner wall of the thin-wall cylinder body is uniformly and tightly supported. In the invention, when the circle-defining clamping mechanism is in an initial state, the driving mechanism is in a tightening state, and the double outer support rods are kept horizontal; after placing a awl section of thick bamboo, actuating mechanism stretches and contracts and drive the rotatory certain angle of two outer vaulting poles to make two outer vaulting poles outwards prop the inner wall of awl section of thick bamboo bottom, evenly set up multiunit circle-fixing clamping mechanism through the platform surface under, guarantee that a plurality of two outer vaulting poles realize even outer the propping to a awl section of thick bamboo inner wall, the awl section of thick bamboo atress is even.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural diagram of a welding fixture for assembling a thin-wall cylinder assembly according to an embodiment of the present disclosure;
FIG. 2 is a schematic perspective view of a main frame assembly of a thin-walled cylinder assembly welding fixture in another embodiment of the present invention;
FIG. 3 is a schematic structural view of a welding fixture with a thin-walled cylinder assembly facing upward from the bottom according to another embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a positioning assembly in a welding fixture for assembling a thin-walled cylinder assembly in another embodiment of the present disclosure;
FIG. 5 is a side view of the positioning assembly of FIG. 4;
FIG. 6 is a schematic view of an initial state of an external support mechanism in the welding fixture for assembling a thin-walled cylinder group according to another embodiment of the present invention;
FIG. 7 is a schematic view of the working state of the external support mechanism in the welding fixture for assembling the thin-walled cylinder in another embodiment of the present invention;
FIG. 8 is a schematic view of an initial state of a centering clamping mechanism in the welding fixture for a thin-wall barrel assembly according to another embodiment of the present invention;
FIG. 9 is a schematic view of the working state of the circular clamping mechanism in the welding fixture for assembling the thin-wall cylinder assembly according to another embodiment of the present invention;
FIG. 10 is a schematic view of the thin-walled cylinder assembly in an alternative embodiment of the present invention in an operating position for positioning the cylinder with respect to the positioning assembly in the welding fixture;
FIG. 11 is a schematic view of the thin-walled cylinder assembly in a working state when the welding fixture positions the cylinder and the third cone at the same time in another embodiment of the present invention;
FIG. 12 is a schematic perspective view of an automatic hold-down assembly in a welding fixture for assembly of thin-walled cylinder assemblies according to another embodiment of the present disclosure;
FIG. 13 is a schematic view of the positioning assembly driven by the elevating power assembly according to another embodiment of the present invention;
FIG. 14 is a schematic view of the positioning assembly driven by the elevating power assembly to descend according to another embodiment of the present invention;
FIG. 15 is a schematic perspective view of a manual hold-down assembly in a welding fixture for assembling a thin-walled cylinder according to another embodiment of the present invention;
fig. 16 is a schematic perspective view of a thin-walled cylinder assembly welding fixture positioning a first conical cylinder in another embodiment of the present invention.
Reference numerals:
1-main frame component 2-positioning component 3-automatic pressing component
4-manual pressing component 5-lifting power component 6-cylinder
7-first cone 8-second cone 9-third cone
11-bottom plate 12-mounting ring 13-circle fixing block
14-fixed circular ring 15-guide shaft 16-linear bearing
21-external support mechanism 22-fixed circle clamping mechanism 23-connecting piece
101-upper platform 102-driving rod 103-double crank rocker assembly
104-first hinge base 105-notch 106-linear sliding block
107-connecting rod 108-external supporting and clamping rod 109-sliding block seat
110-outer supporting block 111-fixing hole 112-second hinge seat
113-reinforcing rod 114-outer rod 115-inner rod
116-power part 117-auxiliary block 201-lower platform
202-circle centering mechanism 203-connecting mechanism 204-driving cylinder
205-mount 206-rack 207-pinion
208-slide rail 209-double external stay bar 210-connecting piece
211-fixed shaft 31-mounting plate 32-driving motor
33-press block 34-first connecting piece 35-second connecting piece
36-screw transmission mechanism 41-fixing plate 42-pressing plate
43-ear seat 51-lifting motor 52-speed reducer
53-Lift 54-Worm
Detailed Description
The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.
Referring to fig. 1 and 2, the thin-walled cylinder assembly welding jig in an embodiment of the present invention includes a main frame assembly and a positioning assembly, wherein the main frame assembly includes a bottom plate, a mounting ring disposed above the bottom plate, and a plurality of vertical plates connecting the bottom plate and the mounting ring, and the positioning assembly is disposed in a space enclosed by the mounting ring and the vertical plates; the positioning assembly comprises an external supporting mechanism and a circle-fixing clamping mechanism, the external supporting mechanism is arranged right above the circle-fixing clamping mechanism and is vertically connected with the circle-fixing clamping mechanism through a connecting piece, the external supporting mechanism is used for pressing the inner wall of the thin-wall cylinder, and the circle-fixing clamping mechanism is used for outwards supporting the inner wall of the thin-wall cylinder; the circle-fixing clamping mechanism is connected with the bottom plate through a plurality of guide shafts.
Referring to fig. 2, on the basis of the above embodiment, in another modified embodiment, a plurality of vertically arranged rounding blocks are further arranged on the top surface of the mounting ring, and the rounding blocks are perpendicular to the mounting ring. The positioning rail is arranged on the fixed round block, when a higher thin-wall cylinder needs to be clamped, the thin-wall cylinder is arranged in the main frame component, and the positioning rail hoops the outer wall of the upper part of the thin-wall cylinder. With continued reference to fig. 2, in other modified embodiments, the top surface of the circle-fixing block is provided with a circle-fixing ring, so that on one hand, the circle-fixing blocks are connected into a whole, which is beneficial to integrally constraining the outer wall of the thin-wall cylinder; on the other hand, the main frame assembly can accommodate a taller thin-walled cylinder.
Referring to fig. 4 and 5, on the basis of the above embodiment, in another modified embodiment, the outer supporting mechanism includes an upper platform, a driving rod fixed in the middle of the platform, and a plurality of double-crank rocker assemblies, one end of each double-crank rocker assembly is hinged to the driving rod, the other end of each double-crank rocker assembly is connected with the surface of the platform in a sliding manner, and the driving rod drives the plurality of double-crank rocker assemblies to approach or separate from each other when moving vertically. Fig. 4 illustrates that the initial state of the external supporting mechanism in this embodiment is a contracted state, 5 double-crank rocker assemblies are enclosed to form a circle, and in other embodiments, other integral double-crank rocker assemblies can be arranged as required, only by ensuring that all double-crank rocker assemblies are uniformly distributed on the upper platform. Fig. 5 illustrates a tightening state of the outer support mechanism during operation, and referring to fig. 10, a cylinder having an inner diameter larger than the diameter of the double-crank rocker assembly in the tightening state is placed on the upper platform, then the driving rod moves downward, the outer diameter of the double-crank rocker assembly is expanded until the end of the double-crank rocker assembly, which is far away from the driving rod, is clamped on the inner wall of the cylinder, so that the outer support of the inner wall of the cylinder in multiple directions is uniform. Through a plurality of double-crank rocker mechanisms uniformly distributed on the upper platform, the outer supporting and clamping rods are guaranteed to uniformly support the inner wall of the cylinder, and local stress concentration of the cylinder is avoided. The outer supporting mechanism in the embodiment can stably position the cylinder with a certain diameter, ensure that the coaxiality of the thin-wall cylinder body does not reach the standard, prevent the displacement of the cylinder in the welding process and ensure the welding quality.
Referring to fig. 6 to 7, the circle fixing and clamping mechanism in this embodiment includes a lower platform, a plurality of circle fixing mechanisms fixed on the lower platform, a connecting mechanism connecting adjacent circle fixing mechanisms, and a driving mechanism, where the circle fixing mechanism includes two outer support rods, the driving mechanism drives the two outer support rods of the plurality of circle fixing mechanisms to rotate within a certain angle range, the lower platform is provided with a plurality of guide shafts, and the driving mechanism drives the two outer support rods of the plurality of circle fixing mechanisms to rotate within a certain angle range. In this embodiment, the lower platform is uniformly provided with 10 circle fixing mechanisms, in other embodiments, other integer number of circle fixing mechanisms can be provided, and only after all the circle fixing mechanisms are uniformly distributed on the surface of the lower platform and the double outer support rods of all the circle fixing mechanisms rotate outwards or inwards, the tail ends of the double outer support rods are enclosed to form a circle. Fig. 5 illustrates an initial state of the circle-defining clamping mechanism in the present embodiment, in which the driving mechanism is in a tightened state, the double outer stays are kept horizontal and the ends thereof face the center of the lower platform, and a plurality of double outer stays are enclosed to form a circle. Fig. 7 illustrates the clamping state of the circle-fixing clamping mechanism in the embodiment, and referring to fig. 11, a third cone with an inner diameter larger than the diameter of the double outer supporting rods in the initial state is placed, and then the driving mechanism stretches and retracts to drive the double outer supporting rods to rotate by a certain angle, so that the double outer supporting rods rotate outwards, and the tail ends of the double outer supporting rods support the inner wall of the bottom of the third cone, so that the third cone is clamped and positioned. The multiple groups of circle-fixing clamping mechanisms are uniformly arranged on the surface of the lower platform of the circle-fixing clamping mechanism, the multiple groups of circle-fixing clamping mechanisms are enclosed to form a circle, the driving mechanism drives the multiple double outer supporting rods to uniformly support the inner wall of the third cone, the third cone is uniformly stressed, and the local stress concentration of the third cone is avoided. The driving mechanism in this embodiment is a driving cylinder, and in other embodiments, other power structures capable of realizing linear driving can be adopted. Through setting up outer supporting mechanism and decide circle clamping mechanism in this scheme, can fix a position drum and awl section of thick bamboo simultaneously, the thin wall barrel of convenient simultaneous location different grade type has improved the welding efficiency of thin wall barrel, has guaranteed welding quality.
Referring to fig. 4 and 5, on the basis of the above embodiment, in another modified embodiment, notches are provided at positions of the upper platform corresponding to the double outer support rods of the circle fixing mechanism, the ends of the double outer support rods respectively extend out of the corresponding notches, and the ends of the double outer support rods can rotate in the notches. Set up like this, when placing a awl section of thick bamboo on last platform, accessible circle mechanism is decided with awl section of thick bamboo inner wall brace tightly. In this embodiment, a plurality of double crank rocker subassemblies enclose the circular shape diameter that closes the formation in the mechanism of propping outward, are less than the circular shape diameter that closes the formation that a plurality of two outer vaulting poles enclose in the mechanism of deciding a circle, set up like this, and outer vaulting mechanism is used for propping the less drum of diameter specially, decides circle clamping mechanism and is used for propping the great awl section of thick bamboo of diameter, and outer vaulting mechanism and decide circle clamping mechanism can simultaneous working, can not mutual interference, and the practicality is strong, and application scope is great.
Referring to fig. 6 and 7, on the basis of the above embodiment, in another modified embodiment, the upper platform is provided with a plurality of linear sliders, the dual-crank rocker assembly includes a connecting rod, an outer supporting and clamping rod and a slider seat, the top end of the connecting rod is hinged to the driving rod, the bottom end of the connecting rod is hinged to the top end of the outer supporting and clamping rod, the bottom end of the outer supporting and clamping rod is hinged to the slider seat, and the slider seat is matched with the linear sliders to realize sliding connection. So set up, when the actuating lever was in vertical removal, can drive and keep away from or be close to the actuating lever with actuating lever articulated double crank rocker subassembly. Through setting up sharp slider at last platform, when the actuating lever drove connecting rod and outer vaulting pole and remove, slider seat along sharp slider sliding connection, can conveniently adjust the circular diameter that a plurality of double crank rocker subassemblies enclose, the connecting rod can prop tightly with outer vaulting pole articulated department the drum inner wall of treating the location. In other embodiments, a sliding groove can be arranged on the surface of the upper platform, a sliding rail is arranged at the bottom of the sliding block seat, and the purpose that the double-crank rocker assembly moves along a specific track on the surface of the upper platform can also be achieved. Or in other embodiments other known structures may be used for the purpose of moving the dual crank rocker assembly along the upper platform surface.
With continuing reference to fig. 6 and 7, in another modified embodiment based on the above embodiment, the middle of the driving rod is provided with a second hinge seat, the dual-crank rocker assembly further comprises a reinforcing rod, the top end of the reinforcing rod is hinged to the second hinge seat on the driving rod, and the bottom end of the reinforcing rod is hinged to the slider seat. By arranging the second hinge seat and the reinforcing rod, the safety of the double-crank rocker assembly in the working process is further enhanced, and the situation that the bottom end of the outer supporting clamping rod is out of control to damage a cylinder to be positioned when the hinge between the connecting rod and the outer supporting clamping rod is broken is avoided; after the reinforcing rods are arranged, the end parts of the outer supporting and clamping rods can be guaranteed to more stably and more synchronously support the inner wall of the cylinder tightly.
With continued reference to fig. 6 to 7, in another modified embodiment, on the basis of the above embodiment, in the external bracing mechanism, the middle of the side surface of the external bracing clamping rod far away from the driving rod is provided with a transverse external bracing block, and the external bracing block and the external bracing clamping rod are perpendicular to each other. With this arrangement, the inner diameter of the cylinder to be positioned can be enlarged within a certain range. In other embodiments, the inner wall of the cylinder is tightened by the hinged parts of the connecting rods and the outer supporting and clamping rods, and the opening angle of the connecting rods and the outer supporting and clamping rods is limited, so that the maximum value of the opening angle of the double-crank rocker assembly corresponds to the cylinder with the largest inner diameter which can be positioned. In this embodiment, the lateral middle part of the outer supporting clamping rod far away from the driving rod is provided with the transverse outer supporting block, the plurality of outer supporting blocks tightly support the inner wall of the cylinder, the cylinder is positioned, the diameter of the cylinder which can be positioned by the outer supporting mechanism is enlarged, and the application range of the outer supporting mechanism is widened.
On the basis of the above embodiment, in another modified embodiment, the actuating lever includes shell, interior pole and power spare, and the periphery of pole in the shell cover is located, and the power spare is fixed in the bottom side of upper mounting plate, and interior pole is fixed in the top side of upper mounting plate, and the power spare drives the shell along interior pole vertical migration.
Referring to fig. 8 and 9, on the basis of the above embodiment, in another modified embodiment, the surface of the lower platform of the circle-fixing clamping mechanism is further provided with a plurality of slide rails, the circle-fixing mechanism further comprises a mounting seat, and a rack and a gear which are engaged with each other, the gear is rotatably connected to the mounting seat through a connecting shaft, a sliding groove which is matched with the slide rails is arranged on the bottom side of the rack, the head ends of the double outer support rods are connected to the connecting shaft, and the rack drives the gear and the connecting shaft to rotate when moving along the slide rails, so as to drive the double outer support rods to swing with the connecting shaft as a fulcrum. With the arrangement, after the gear and the rack are mutually engaged and start to act, the double outer support rods arranged on the connecting shaft of the gear swing along with the gear, and the diameter of a circle formed by enclosing the double outer support rods is changed within a certain range. Because the surface of the lower platform is provided with the plurality of sliding rails, the moving track of the rack is ensured, the gear and the rack are prevented from being meshed and separated, and the safety of the circle-fixing clamping mechanism during working is ensured.
On the basis of the above embodiment, in another improved embodiment, the connecting mechanism between two adjacent rounding mechanisms is a universal joint, and two ends of the universal joint are respectively connected with the ends of the connecting shafts of two adjacent gears. Therefore, the two adjacent circle fixing mechanisms are connected through the universal joint, and the gears of all the circle fixing mechanisms can rotate, so that the action states of the double outer support rods of all the circle fixing mechanisms swing by taking the connecting shaft as a fulcrum are completely consistent.
Referring to fig. 8 and 9, on the basis of the above embodiment, in another modified embodiment, the end of the driving cylinder is connected with the end of the rack of one of the circle centering mechanisms, and the driving mechanism pushes the rack to move along the slide rail. The driving cylinder in the embodiment is horizontally arranged and comprises a cylinder body and a piston rod, wherein the tail end of the piston rod is connected with one of the racks, and the piston rod and the racks are located on the same straight line. When the piston rod pushes one of the racks to move along the sliding rail, the rack drives the corresponding gear to rotate, the gears rotate simultaneously through the universal joint, and all the double outer support rods are driven to swing simultaneously by taking the connecting shaft as a fulcrum. In this embodiment, the piston rod is fixedly connected to the end of the rack, the moving frequency of the piston rod determines the moving frequency of the rack along the sliding rail, and the moving of the rack drives the gear to rotate passively, so that the double outer stays swing with the connecting shaft as a fulcrum.
Referring to fig. 4 and 5, on the basis of the above embodiment, in another modified embodiment, the connecting pieces of the external supporting mechanism and the circle fixing clamping mechanism are vertical rods and fasteners, the vertical rods penetrate through the lower platform and the upper platform, and the vertical rods and the upper platform are connected together through the fasteners. The fasteners in this embodiment are bolt assemblies.
Referring to fig. 8 and 9, on the basis of the above embodiment, in another modified embodiment, the double outer stay bars include two plate bodies and a bar body which are parallel to each other, the bar body is disposed between the two plate bodies and is connected with one end of the two plate bodies, and the other ends of the two plate bodies are respectively sleeved on the connecting shafts on the two sides of the gear. Through the rod bodies of the two plate bodies which are parallel to each other and the connecting plate body, the contact point between each double outer supporting rod and the to-be-positioned conical cylinder is the tail end of the two plate bodies, and the condition that the local stress concentration of the conical cylinder causes fracture is avoided. The end of the double outer supporting rods, which is provided with the rod body, is the tail end, and the end of the double outer supporting rods, which is connected with the connecting shaft, is the head end. Set up like this, when the connecting axle of gear drives two outer vaulting poles rotatory, the center of platform or the center of outwards keeping away from down the platform can be faced down to the end of two outer vaulting poles to the realization is treated the awl section of thick bamboo of location and is loosened or press from both sides tightly.
With continued reference to fig. 4, 5, 13, and 14, as an improvement of this embodiment, in another embodiment, the thin-walled cylinder assembly includes a main frame assembly and a positioning assembly, the positioning assembly includes an outer supporting mechanism and a circle-fixing clamping mechanism, the outer supporting mechanism is disposed right above the circle-fixing clamping mechanism, the upper platform and the lower platform are both horizontally disposed and parallel to each other, and the upper platform and the lower platform are vertically connected together through a connecting member. A guide shaft is fixed on a lower platform of the circle-determining clamping mechanism and connected with a linear bearing on a bottom plate of the main frame component, so that the height of the whole positioning component can be adjusted through the matching of the guide shaft and the linear bearing, and the circle-determining clamping mechanism is suitable for thin-wall cylinders with different heights. The middle part of the upper platform in this embodiment is provided with 5 double-crank rocker assemblies, the outside of the upper platform is provided with 10 notches, the positions of the 10 notches correspond to the positions of the double outer support rods of the 10 circle fixing mechanisms, the tail ends of the 10 double outer support rods respectively extend out of the corresponding notches and are higher than the plane where the upper platform is located, and the tail ends of each double outer support rod can rotate in the notches. The maximum diameter of the circle enclosed by the 5 double-crank rocker components of the external support mechanism is smaller than the minimum diameter of the circle enclosed by the tail ends of the double external support rods of the 10 circle fixing mechanisms. When the thin-wall cylinder body in the embodiment is adopted to assemble and position the cylinder by the welding fixture, the maximum diameter of the cylinder capable of being positioned is the maximum diameter of 5 double-crank rocker assemblies when the double-crank rocker assemblies are opened outwards, and the minimum diameter of the cylinder capable of being positioned is the minimum diameter of 5 double-crank rocker assemblies when the double-crank rocker assemblies are contracted inwards. When the thin-wall cylinder body in the embodiment is used for positioning the conical cylinder by using the welding fixture, the maximum diameter of the conical cylinder capable of being positioned is the diameter of a circle enclosed by the 10 double outer support rods when the tail ends of the double outer support rods rotate outwards by the maximum angle, and the minimum diameter of the conical cylinder capable of being positioned is the diameter of a circle enclosed by the 10 double outer support rods when the tail ends of the 10 double outer support rods face the central position of the upper platform.
Referring to fig. 4, 10 and 11, on the basis of the above embodiment, in another modified embodiment, an auxiliary block is arranged at the edge of the upper platform opposite to each double crank rocker assembly, so that a manipulator or a person can conveniently place the thin-wall cylinder on the surface of the upper platform, and then the thin-wall cylinder is further positioned accurately through a positioning assembly.
Referring to fig. 3, 13 and 14, on the basis of the above embodiment, in another modified embodiment, the welding jig for the pair of thin-walled cylinder bodies further comprises a lifting power assembly disposed at the bottom side of the bottom plate, the lifting power assembly comprises a lifting motor and a lifter, and the lifting motor drives the positioning assembly to move vertically by driving the lifter. The arrangement facilitates the control of the height of the whole positioning assembly in the main frame assembly, so that the whole device can automatically adapt to thin-wall cylinders to be positioned with different heights.
With continued reference to fig. 3, on the basis of the above embodiment, in another modified embodiment, the lifting power assembly further includes a speed reducer, the lifting motor is connected to an input end of the speed reducer, and an output end of the speed reducer is connected to the lifter. Through setting up the speed reducer, play the effect of matching rotational speed and transmission torque between elevator motor and lift.
Referring to fig. 2, 3 and 14, on the basis of the above embodiment, in another modified embodiment, a plurality of linear bearings are arranged on the bottom plate, and the linear bearings are connected with the guide shafts.
Referring to fig. 3, 13 and 14, on the basis of the above embodiment, in another modified embodiment, the lifting motor is a servo motor, and the lifter is a worm gear lifter comprising a worm gear and a worm, the worm penetrates through the bottom plate, and the worm gear is fixed on the bottom side surface of the bottom plate. The bottom plate is connected with the positioning assembly through a linear bearing and a guide shaft. When the servo motor drives the worm wheel to rotate through the speed reducer, the whole bottom plate is enabled to ascend or descend relative to the worm.
Referring to fig. 1 and 12, on the basis of the above embodiment, in another modified embodiment, the thin-walled cylinder assembly welding fixture further includes an automatic pressing assembly, the automatic pressing assembly is disposed on the upper surface of the mounting ring, the automatic pressing assembly includes a mounting plate, a driving motor, a pressing block, a first connecting member, a second connecting member and a screw transmission mechanism, the mounting plate is fixed on the upper surface of the mounting ring through a bolt and a nut, the screw transmission mechanism is fixed on the mounting plate, the pressing block is hinged to the mounting plate through the first connecting member, wherein the first connecting member is vertically fixed on the mounting plate, and one end of the pressing block is hinged to the top end of the first connecting member; one end of the second connecting piece is hinged with the top end of the spiral transmission mechanism, the middle of the pressing block is hinged with the other end of the second connecting piece, the driving motor drives the spiral transmission mechanism to vertically move, and the spiral transmission mechanism drives the pressing block to rotate by taking a hinged point of the pressing block and the first connecting piece as a fulcrum through the second connecting piece. In this embodiment, the one end that the briquetting and first connecting piece articulated is the link, and the one end that the briquetting kept away from first connecting piece is the end that compresses tightly, compresses tightly the central point that the end faced the collar and puts. Set up like this, when a bigger size awl section of thick bamboo was placed in the inside of main frame subassembly, the automatic subassembly that compresses tightly starts, and the end that compresses tightly of briquetting compresses tightly the location with the outer wall of a awl section of thick bamboo.
Referring to fig. 1 and fig. 15, on the basis of the above embodiment, in another modified embodiment, the thin-wall barrel assembly welding fixture further comprises a manual pressing assembly, and the manual pressing assembly is arranged on the mounting ring; the manual subassembly that compresses tightly includes fixed plate and clamp plate, and the fixed plate passes through the fixed upper surface that sets up in the collar of bolt and nut, and the fixed plate top is provided with the ear seat of two vertical parallels, and the one end and two ear seats of clamp plate are articulated, and the other end of clamp plate passes through the bolt and the nut fastens on the mounting panel. One end of the pressure plate, which is far away from the ear seat, is used for pressing the outer wall of the cone to be positioned.
The working process of assembling the thin-wall cylinder to the welding fixture in one embodiment is briefly described as follows with reference to the attached drawings 1 to 15:
the main frame assembly is arranged on the tiltable positioner, and a cylinder and/or a cone cylinder to be positioned are/is placed in the inner space of the main frame assembly through a manipulator or manually;
for a large conical barrel, the outer wall of the conical barrel is pressed and positioned through an automatic pressing assembly, and then the inner wall of the bottom of the conical barrel is tightly supported through a circle-fixing clamping mechanism; for the small cylinder, the inner part of the cylinder is tightly supported and positioned through an external support mechanism, or the outer wall of the cylinder is tightly pressed through a manual pressing assembly;
after the cylinder and/or the conical cylinder are fixed, the tiltable positioner rotates for 90 degrees, the whole thin-wall cylinder assembly rotates to the welding fixture, and a welding seam is subjected to spot welding through a manipulator or manually;
sequentially loosening the circle-fixing clamping mechanism, the external support mechanism, the manual pressing assembly and the automatic pressing assembly, and taking down the welded product through a manipulator or manually;
when the thin-wall cylinder bodies with different heights are replaced, the positioning component is driven to ascend or descend by the lifting power component.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The thin-wall cylinder assembly welding fixture is characterized by comprising a main frame assembly and a positioning assembly, wherein the main frame assembly comprises a bottom plate, a mounting ring arranged above the bottom plate and a plurality of vertical plates connecting the bottom plate and the mounting ring, and the positioning assembly is arranged in a space enclosed by the mounting ring and the vertical plates; the positioning assembly comprises an external supporting mechanism and a circle-fixing clamping mechanism, the external supporting mechanism is arranged right above the circle-fixing clamping mechanism and is vertically connected with the circle-fixing clamping mechanism through a connecting piece, the external supporting mechanism is used for pressing the inner wall of the thin-wall barrel, and the circle-fixing clamping mechanism is used for supporting the inner wall of the thin-wall barrel outwards; the circle-fixing clamping mechanism is connected with the bottom plate through a plurality of guide shafts.
2. The thin-walled cylinder assembly welding fixture according to claim 1, wherein the outer support mechanism comprises an upper platform, a driving rod fixed in the middle of the platform, and a plurality of double-crank rocker assemblies, one end of each double-crank rocker assembly is hinged to the driving rod, the other end of each double-crank rocker assembly is slidably connected with the surface of the platform, and the driving rod drives the double-crank rocker assemblies to approach or move away from each other when moving vertically;
decide circle clamping mechanism include down the platform, be fixed in a plurality of on the platform decide circle mechanism, connect adjacently down decide circle mechanism's coupling mechanism and actuating mechanism, decide circle mechanism includes two outer vaulting poles, actuating mechanism drives a plurality ofly decide circle mechanism's two outer vaulting poles at certain angle within range internal rotation, be provided with a plurality ofly on the platform down the guiding axle.
3. The thin-walled cylinder assembly welding jig according to claim 2, wherein a notch is provided at a position of the upper platform corresponding to the double outer stays of the plurality of centering mechanisms, ends of the plurality of double outer stays extend out from the corresponding notch respectively, and the ends of the double outer stays can rotate in the notch.
4. The thin-walled cylinder assembly welding fixture of claim 3, wherein the upper platform is provided with a plurality of linear sliders, the double-crank rocker assembly comprises a connecting rod, an outer supporting and clamping rod and a slider seat, the top end of the connecting rod is hinged to the driving rod, the bottom end of the connecting rod is hinged to the top end of the outer supporting and clamping rod, the bottom end of the outer supporting and clamping rod is hinged to the slider seat, and the slider seat is matched with the linear sliders to realize sliding connection.
5. The thin-walled cylinder assembly welding jig of claim 4, wherein the surface of the lower platform is further provided with a plurality of sliding rails, the centering mechanism further comprises a mounting seat, and a rack and a gear which are engaged with each other, the gear is rotatably connected to the mounting seat through a connecting shaft, a sliding groove which is matched with the sliding rails is formed in the bottom side of the rack, the head ends of the double outer supporting rods are connected to the connecting shaft, and the rack drives the gear and the connecting shaft to rotate when moving along the sliding rails, so that the double outer supporting rods are driven to swing with the connecting shaft as a fulcrum.
6. The thin-walled cylinder assembly welding jig of any one of claims 1 to 5, further comprising a lifting power assembly disposed at the bottom side of the bottom plate, wherein the lifting power assembly comprises a lifting motor and a lifter, and the lifting motor drives the lifter to drive the positioning assembly to move vertically.
7. The thin-walled cylinder assembly welding jig of claim 6, wherein the lifting power assembly further comprises a speed reducer, the lifting motor is connected with an input end of the speed reducer, and an output end of the speed reducer is connected with the lifter.
8. The thin-walled cylinder assembly welding fixture of claim 6, further comprising an automatic pressing assembly, wherein the automatic pressing assembly is arranged on the upper surface of the mounting ring, the automatic pressing assembly comprises a mounting plate, a driving motor, a pressing block, a first connecting piece, a second connecting piece and a screw transmission mechanism, the mounting plate is fixed on the upper surface of the mounting ring, the screw transmission mechanism is fixed on the mounting plate, the pressing block is hinged to the mounting plate through the first connecting piece, the pressing block is hinged to the top end of the screw transmission mechanism through the second connecting piece, the driving motor drives the screw transmission mechanism to vertically move, and the screw transmission mechanism drives the pressing block to rotate.
9. The thin-walled cylinder group pair welding fixture according to claim 6, further comprising a manual pressing assembly, wherein the manual pressing assembly is arranged on the mounting ring, the manual pressing assembly comprises a fixing plate and a pressing plate, the fixing plate is fixedly arranged on the upper surface of the mounting ring, one end of the pressing plate is hinged to the fixing plate, and the other end of the pressing plate is fastened to the mounting plate through a bolt and a nut.
10. The thin-walled cylinder assembly welding fixture of claim 6, wherein a plurality of vertically arranged centering blocks are further arranged on the top surface of the mounting ring, and the centering blocks are perpendicular to the mounting ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832962.9A CN112548431A (en) | 2020-08-18 | 2020-08-18 | Thin-wall cylinder assembling and welding fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832962.9A CN112548431A (en) | 2020-08-18 | 2020-08-18 | Thin-wall cylinder assembling and welding fixture |
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| CN112548431A true CN112548431A (en) | 2021-03-26 |
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| CN202010832962.9A Pending CN112548431A (en) | 2020-08-18 | 2020-08-18 | Thin-wall cylinder assembling and welding fixture |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113618326A (en) * | 2021-08-09 | 2021-11-09 | 浙江东南网架股份有限公司 | Spatial positioning tool for cylindrical low-background stainless steel node and operation method thereof |
| CN113649736A (en) * | 2021-08-27 | 2021-11-16 | 安徽巨一科技股份有限公司 | Automatic rotating equipment suitable for welding different cylinder diameters and tracks of concrete mixer truck |
| CN114505627A (en) * | 2022-02-24 | 2022-05-17 | 湖北工程学院 | Auxiliary welding structure for assembly parts and assembly part welding machine |
| CN116060738A (en) * | 2023-04-06 | 2023-05-05 | 无锡新松机器人自动化有限公司 | Vertical assembly device for aluminum alloy powder tank body |
| CN116329988A (en) * | 2023-05-29 | 2023-06-27 | 江苏龙跃不锈钢管业有限公司 | Stainless steel tube machining chuck machine |
| CN116587649A (en) * | 2023-07-19 | 2023-08-15 | 河北世派轮胎有限公司 | Tire shaping cooling arrangement |
| CN117840680A (en) * | 2024-03-07 | 2024-04-09 | 成都德安金属制品有限公司 | Annular part welding tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618326A (en) * | 2021-08-09 | 2021-11-09 | 浙江东南网架股份有限公司 | Spatial positioning tool for cylindrical low-background stainless steel node and operation method thereof |
| CN113649736A (en) * | 2021-08-27 | 2021-11-16 | 安徽巨一科技股份有限公司 | Automatic rotating equipment suitable for welding different cylinder diameters and tracks of concrete mixer truck |
| CN114505627A (en) * | 2022-02-24 | 2022-05-17 | 湖北工程学院 | Auxiliary welding structure for assembly parts and assembly part welding machine |
| CN114505627B (en) * | 2022-02-24 | 2024-06-14 | 湖北工程学院 | Auxiliary welding structure for assembly and assembly welding machine |
| CN116060738A (en) * | 2023-04-06 | 2023-05-05 | 无锡新松机器人自动化有限公司 | Vertical assembly device for aluminum alloy powder tank body |
| CN116329988A (en) * | 2023-05-29 | 2023-06-27 | 江苏龙跃不锈钢管业有限公司 | Stainless steel tube machining chuck machine |
| CN116587649A (en) * | 2023-07-19 | 2023-08-15 | 河北世派轮胎有限公司 | Tire shaping cooling arrangement |
| CN116587649B (en) * | 2023-07-19 | 2023-09-12 | 河北世派轮胎有限公司 | Tire shaping cooling arrangement |
| CN117840680A (en) * | 2024-03-07 | 2024-04-09 | 成都德安金属制品有限公司 | Annular part welding tool |
| CN117840680B (en) * | 2024-03-07 | 2024-05-07 | 成都德安金属制品有限公司 | Annular part welding tool |
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