Technical solution of Steel Barrel Body Forming Machine

Third, the steel barrel body forming process method and apparatus
1, the barrel body flange
Barrel body flanging process method generally die flanging, rolling flanging, flanging and bulging eccentric rolling flanging several.
( 1 ) Mold flanging
As shown in the schematic diagram of the mold flange .

Schematic process for die flanging machine
Mold flanging machine working process is like this :
First by hydraulic cylinders ( or pneumatic drive cylinder ) agency will allocate barrel barrels are credited to the early positioning flanging machine , and then die plunger hydraulic cylinder under the action moves to the middle , when the die head into the bucket two end , by the face of the pressure plate tapered barrels are inclined to fine positioning, a good bit stamper into the middle of the two barrels are clamped , then the edge of the barrel body fluid under pressure in the die along the arc curve for valgus shift , when the flange width to process requirements , the barrel body was dug out of the edge of the outer limit bench tops die die die shift subject to greater resistance.When the die by the resistance , namely fluid pressure reaches the set pressure, the solenoid valve commutation, the hydraulic cylinder to return , so that die within a quick exit from the barrel body . Dial barrel unit immediately turned aside good side of the barrel body flanging machine .
Flanging die main advantage of high efficiency , good quality equipment , simple structure, small size.
Hydraulic transmission not only enables organizations to reduce , but also to get a larger force flanging . But the main thing is to set the pressure to adjust the size of the barrel body flange level , so that each barrel body ( regardless of the length of the barrel body what error ) , flange width always guaranteed. If a mechanical transmission , because the transmission position can only tune into the fixed value, but the total length of the barrel body have a certain tolerance , it can not be satisfied with the results, may be insufficient or exceed flange width defects .
The disadvantage is that the mold flange flange transition arc not too small, too difficult because of rounded shape , and the flange resistance, arc die easily damaged parts .In addition , the angle between the flange and the barrel body easily translated angle side , under normal circumstances , flange angle between 90 ° ~ 120 ° .
As shown in the simplified mold flanging machine hydraulic system schematic. When the cuff pressure reaches a certain set pressure , the pressure relay 2PD action, ie solenoid 2DT action , so three -way reversing valve , the hydraulic cylinder to return , and retreated to the original location , but also relay trip , driven dial dial barrels barrels institutions , bodies reset and then broke down the barrel dial dial barrel limit switch action, even if the solenoid 1DT action, reversing valve , hydraulic cylinder and into the working state .
Above hydraulic mold flanging machine works introduction, the figure plots the main work loop. Hydraulic Transmission easily automated production.

Mold flanging machine hydraulic system diagram
( 2 ) rolling flange
Pictured below flanging and rolling into sheet flanging process schematic .


Schematic flanging machine rolling process method
As shown placed in the upper and lower rollers barrel body side , and some flanging machine is placed in the upper and lower rollers under the barrel body for flanging .
Rolling flanging process is as follows : a) before forming the barrel body is placed under rough roller is positioned on the first step , in order to traverse around the barrel body will not affect the accuracy flanging , about two lower rollers have a limited bit stairs, barrel body just inside the roller clamp . b) the working phase, the upper roller under pressure, in contact with the barrel body , barrel body that rotates together with the upper and lower rollers , the upper feed roller under the pressure of the process, the drum body with the same roll down , the upper and lower edge of the roller barrelclearance outwards . c) rolling the end of the forming stage, with the upper roller declining , barrel body is pushed to the lowest level on rollers , flanging basic shape is completed, the end flange , upper roller rises .
( 3 ) bulging flanging
As for the bulging flanging machine work process diagram .

Bulging flanging machine schematic process method
Flanging machine mainly by the detent plate , clip core barrel , bulging portion of the block and other components work . The working process is as follows: ( 1 ) Figure a, the barrels are placed flanging machine, move to the middle plate positioned on both sides of the clamp core and push the barrel bulging block , when both ends of the barrel rim and positioning plate top tight , the positioning plate stops moving. At this point along the barrel clamp barrel block radial center of the barrel body moving clamp core and clamp the clip barrel barrels block the middle . ( 2 ) Figure b, the block radially outward bulging bulging open , forcing the barrel side pulls out . Bulge bulging block to the highest point , flanging has been basically completed , and then retracted bulging block , loosen the clamp barrel block , positioning plate moves out of the barrel body from side to side , turning a good barrel body from the lower edge of the dial drum unit dialed.
Bulging bulging cone punch action is a hydraulic cylinder or cylinders contribute to the achievement of , swelling cone mold into Orange Peel , namely bulging block ( bulging principle described in detail in Chapter 10 ) .
Bulging flanging , high efficiency, good quality, but the equipment is more complex , the volume is also larger . At present this process in the country is used in the keg or barrel shaped flange process, such as a small square barrel barrel body flanging, this method is most suitable .
Bulging flanging way to use more hydraulic transmission , institutional smaller , smooth , strength is large, the effect is excellent.
2 , barrel body forming process method
( 1 ) Roll Forming
The following figure shows a schematic common barrel body roll forming .

Barrel body roll forming process for schematic
In the barrel body processing corrugated and ring bars , is to strengthen the mechanical strength of steel drums , the domestic processing methods and more ways to roll forming . Now, with the development of technology and technology advances , there have been bulging way processing equipment . But rolling processing method has its unique advantages , so the application of cooperage industry is still relatively extensive.In particular, the process used in the keg , it seems great scope , it is different from bulging processed biggest advantage is rolling process the material deformation and stress distribution in the deformation zone is flat, the flow of material fiber cohesion hadprotection, so large deformation strength of the material region .
Corrugated ring ribs corrugated roll forming machine process is completed by .Corrugated machine is rolling out the barrel body corrugated stiffener cooperage special equipment. It belongs to a special class of specialized machinery , its construction, performance , operating principles and detailed prior to transmission and mechanical transmission flanging roll forming machine similar . The forming method is roll forming , but the power transmission corrugator machine is a single stream , only the rotational torque of the roller shaft to the bellows . Forming part of the Figure is a schematic diagram of corrugated machines . Corrugator machine is the use of the action of friction on the wheel falls under the bellows barrel body under the action of the pressure roller synchronous rotation, and the barrel body in the upper and lower corrugated roller to the roller under the effect of the contact areas to generate a localplastic deformation. The ripples in the bucket is a local body roll forming, deformation zone by way stretch material effect.
( 2 ) bulging tendons forming
Barrel body bulging many methods , with the barrel body shape varies from , but the principles are as a spoken , as shown in the general cylindrical drum body bulging ring bars partial schematic machine work .
Its bulging process is as follows , by the cone movement pushing expansion block 9 block 5 , it flared . The aircraft are powered by hydraulic cylinders or cam mechanism applied to the left end of the core rod a work , the first barrel body set into the barrel body positioning sleeve 4 , abutting frame positioning plate 3 . Then start action switch , the core rod moves to the right , the right cone mandrel is pushed outwards Right slide block 9 8 6 slide radially outward movement of rail and the top of the right- bulging block 5 , the split expansion block the barrel body flared ribs forming the right ring . Then reversing valve operation , the mandrel moves to the left ; Right expansion block 5 in the action of the return spring 7 inwardly back in place , the core rod beyond the neutral position (i.e., illustrated position ) and to continue to the left , the left cone left slider to the left block to promote the expansion and to the left block to open outward bulge forming ring bars , the last action valve and back to the core rod back to the middle position, remove the barrel body bulging good .

Barrel body bulging tendons machine structure diagram
As shown in the flange, bulging tendons , corrugated joint forming machines, welded barrels are sent to the processing by the conveying device location , about two flanging bulging driven by a hydraulic ram into the barrel body , the first complete flanging process ; and then turn the mold extrusion cylinder head outside the bulge moves through the mandrel and the mandrel on the bulging tendons cone block , pressure ripple cone block bulging tendons module launch , and then press corrugated module launched to complete the expansion and compression corrugated ribs processes. The machine is equipped with chain conveyor , generally using PC control .

Triple barrel body structure forming machine
( 3 ) expansion cone ( bulging square ) shape
Conical barrel developed in recent years in the country of new products , the most typical conical bucket, 20 l and 215 l easy opening conical drum barrel. Conical barrel shaped barrel body launched a fan-shaped, tapered barrels previously small batch production , sheet metal cutting by sector , not only mold complex , fragile , stamping equipment is huge , and not conducive to mass production , so now use more expansion cone production .
Expansion cone method is the production process : cutting , press the small diameter tapered barrel commence cut into rectangular strips , the seam welding become cylindrical barrel body, then barrels are set in an expansion cone within the mold , the mold through hydraulic cylinder into the top opening after swelling , swelling into a barrel body . In mass production , mostly using professional equipment - expansion cone machine bulging drum body production, higher production efficiency . Generally more vertical expansion cone machine , there are also made ​​of horizontal , hydraulically controlled transmission mode by the cylinder as the expansion cone actuator. As shown in a common vertical expansion cone machine outline.

Bulging conical barrel barrel body outline drawing machine
As shown rectangular square barrel bulging schematic diagram .

Rectangular bucket barrel body bulging method schematics

Bulging front bucket without being cylindrical , barrel body after bulging into rectangles.Bulging machine mainly by expansion blocks , wedges , cylinders and hydraulic system components . When the valve is not energized ( ie the position shown ) , the wedge is in the lower position ; when the solenoid valve is energized valve commutation. Cylinder piston upward, forcing the expansion wedge block moves from side to side , the barrel body swelling into a rectangle, again, when the valve commutation , the wedge down, swelling blocks the action of the return spring moves toward the center , then a good expansion you can remove the barrel body .