CN112440072B - Welding fixture for steel cylinder production and use method thereof - Google Patents
Welding fixture for steel cylinder production and use method thereof Download PDFInfo
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- CN112440072B CN112440072B CN202011244218.3A CN202011244218A CN112440072B CN 112440072 B CN112440072 B CN 112440072B CN 202011244218 A CN202011244218 A CN 202011244218A CN 112440072 B CN112440072 B CN 112440072B
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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
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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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/12—Vessels
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Abstract
The invention relates to a welding fixture for steel cylinder production and a use method thereof, the welding fixture comprises a fixed seat and a movable seat which are opposite from each other in front and back, the side wall of one side of the fixed seat opposite to the side wall of the movable seat is symmetrically provided with semicircular grooves, the bottoms of the inner grooves of the grooves are provided with arc-shaped clamping grooves, and the welding fixture is characterized in that: one side of the movable seat far away from the fixed seat is provided with a control clamping assembly used for pushing the movable seat to move relative to the fixed seat and match with the fixed seat to clamp the steel cylinder body. When the steel cylinder fixing device is used, the steel cylinder body is clamped into the open groove formed in the side wall of the fixing seat and clamped into the arc-shaped clamping groove for further limiting, then the control clamping assembly is arranged on one side, away from the fixing seat, of the moving seat, the control clamping assembly pushes the moving seat to move relative to the fixing seat, the moving seat and the fixing seat are close to each other and are in extrusion contact, then the steel cylinder body is fixed, and compared with the prior art that a complex mechanical mechanism is needed for fixing, the steel cylinder fixing device is simple and reliable in structure.
Description
Technical Field
The invention relates to the technical field of steel cylinder processing production, in particular to a welding fixture for steel cylinder production and a using method thereof.
Background
The liquefied gas steel cylinder is a class II pressure container for containing flammable and explosive chemicals, is widely applied to the life of urban and rural residents and large-gear, small-scale restaurants and small-scale restaurants in cities and towns, and the welding quality of the base of the liquefied gas steel cylinder determines the stability and the safety of the steel cylinder in the processes of filling, carrying and using. In welding process, need use welding jig to treat welded steel bottle body and press from both sides tightly fixedly usually, then weld the opposite side again, present welding jig presss from both sides tightly uses inconveniently, adopts complicated mechanical structure to come transmission operation control to press from both sides tightly, and presss from both sides tight fixed unstability to the steel bottle body, receives the vibration and breaks away from in welding process after pressing from both sides tightly fixed easily, brings great influence to welding quality, from this needs improve.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a welding clamp for steel cylinder production, which is simple in structure, convenient to clamp and fix, stable after being fixed and not easy to shake and release, and a using method thereof.
The technical scheme of the invention is realized as follows: the utility model provides a welding jig for steel bottle production, includes relative fixing base around and removes the seat, semicircular fluting has been seted up to the symmetry on the relative one side lateral wall of fixing base and removal seat, open at the bottom of the fluting inside groove is equipped with the arc and presss from both sides tight groove, its characterized in that: one side of the movable seat far away from the fixed seat is provided with a control clamping assembly used for pushing the movable seat to move relative to the fixed seat and match with the fixed seat to clamp the steel cylinder body.
By adopting the technical scheme, when the steel cylinder fixing device is used, the steel cylinder body is clamped into the open groove formed in the side wall of the fixing seat and clamped into the arc-shaped clamping groove for further limiting, then the clamping control assembly is arranged on one side, far away from the fixing seat, of the moving seat, and pushes the moving seat to move relative to the fixing seat, so that the steel cylinder body is fixed after the moving seat is close to and in extrusion contact with the fixing seat, and compared with the prior art, the steel cylinder fixing device needs a complex mechanical mechanism to realize fixing, and the steel cylinder fixing device is simple and reliable in structure.
The invention is further configured to: the control clamping assembly comprises a reciprocating plunger pump, an electromagnetic directional valve and a hydraulic control one-way valve, a driving piston is arranged on the driving side of the reciprocating plunger pump, the driving piston is connected with a main board through a connecting rod, the main board is connected with a moving seat through two push plates which are bilaterally symmetrical along the central axis of the moving seat, the rodless side of the driving piston is a rear driving cavity, the rod side of the driving piston is a front driving cavity, the electromagnetic directional valve is a three-position four-way valve and is provided with a left electromagnetic coil and a right electromagnetic coil, a valve core is normally positioned at the middle position by a left spring and a right spring, and the valve core is driven by the left electromagnetic coil or the right electromagnetic coil to deflect to a first position or a second position; normally in the neutral position, port A3 is off, and port a1 is in communication with both port a2 and port a 4; in the first position, port A3 and port a1 are in communication, and port a2 and port a4 are in communication; in the second position, port a1 and port a4 are in communication, and port a2 and port A3 are in communication; the port A1 of the electromagnetic directional valve is communicated with the front driving cavity, the port A2 of the electromagnetic directional valve is communicated with the rear driving cavity through a hydraulic control one-way valve, a control oil path of the hydraulic control one-way valve is communicated with the port A1 of the electromagnetic directional valve, the port A3 of the electromagnetic directional valve is connected with an oil supply pipeline, and the port A4 of the electromagnetic directional valve is connected with an oil return pipeline.
By adopting the technical scheme, when in use, the steel cylinder body is clamped into the open groove formed in the side wall of the fixed seat and clamped into the arc-shaped clamping groove for further limiting, then the electromagnetic directional valve is switched from the middle position to the second position, when the electromagnetic directional valve is in the second position, the port A1 is communicated with the port A4, the port A2 is communicated with the port A3, hydraulic oil passes through the port A3 and the port A2 from an oil supply pipeline and enters the rear driving cavity of the reciprocating plunger pump through the electromagnetic directional valve and the hydraulic control one-way valve, the piston is pushed to slide in the direction of the front driving cavity and drives the main board connected through the connecting rod to move in the direction of the fixed seat, the main board is connected with the movable seat through two push plates which are bilaterally symmetrical along the central axis of the movable seat, so that after the movable seat and the fixed seat are pushed to approach and press-contact through the two push plates, the steel cylinder body is fixed, the electromagnetic directional valve is switched to the normal state, the port A3 is cut off when the hydraulic oil is normally at a middle position, the port A1 is communicated with the port A2 and the port A4 at the same time, the hydraulic oil stops feeding, the hydraulic control one-way valve is arranged to prevent the hydraulic oil fed into the rear driving cavity from being flushed back reversely to cause the driving piston to move towards the front driving cavity so as to ensure the stability of the driving piston against the connecting rod, so that the driving piston keeps the limiting clamping effect on the moving seat, the separation caused by vibration in the welding process after clamping and fixing is prevented, the welding quality is improved, after the welding is finished, the electromagnetic reversing valve is switched to a first position, the port A3 is communicated with the port A1, the port A2 is communicated with the port A4, most of the hydraulic oil passes through the port A3 and the port A1 from an oil supply pipeline and passes through the electromagnetic reversing valve, the hydraulic control valve to push the driving piston to slide towards the rear driving cavity, and extrude the hydraulic oil in the rear driving cavity to move towards the one-way valve, the other part of hydraulic oil enters a control oil path of the hydraulic control one-way valve after passing through the electromagnetic directional valve, the liquid-air one-way valve is opened, the hydraulic oil in the rear driving cavity is returned from the oil return pipeline after passing through the hydraulic control one-way valve, the port A2 of the electromagnetic directional valve and the port A4, and compared with the prior art, the steel cylinder body is convenient to clamp and fix, and meanwhile, the phenomenon of vibration and disengagement is not easy to occur in the welding process after clamping and fixing, and the welding quality is improved.
The invention is further configured to: the side wall of one side of the moving seat far away from the fixed seat is provided with a control limiting assembly which is used for limiting, fixing and preventing loosening of the moving seat after the moving seat and the fixed seat are matched, clamped and fixed.
Through adopting above-mentioned technical scheme, in order to further prevent pressing from both sides tight fixed back to the steel bottle body, vibration among the welding process makes to remove the seat and throw off around the relative fixing base, be provided with on the lateral wall of one side that the fixing base was kept away from to the removal seat and be used for carrying out spacing fixed control spacing subassembly that prevents the pine and take off to removing the seat after removing the seat and fixing base cooperation and pressing from both sides tight fixed, realize pressing from both sides tight fixed back to the steel bottle body removing seat and fixing base, carry out spacing fixed by the spacing subassembly of control to removing the seat, prevent to appear removing the seat displacement and the pine takes off.
The invention is further configured to: the control limiting assembly comprises a connecting plate fixed on the side wall of the fixed seat, a U-shaped limiting plate fixed on the connecting plate, a control seat fixed in the middle of the side wall of the movable seat far away from the fixed seat and a movable cavity arranged in the control seat, wherein two ends of the limiting plate far away from the connecting plate respectively extend to the upper side and the lower side of the movable seat, a sliding plate is arranged in the movable cavity in a sliding manner from front to back in the groove, an inner cavity is arranged in the control seat and positioned at one side of the movable cavity far away from the movable seat, an ejector rod is fixed on the side wall of the sliding plate facing the inner cavity, one end of the ejector rod penetrates through the movable cavity and extends into the inner cavity and is connected with an inner block with an isosceles trapezoid longitudinal section, an upper ejection cavity and a lower ejection cavity are respectively arranged in the control seat and positioned at the upper side and the lower side of the inner cavity, and an upper sliding block and a lower sliding block are respectively arranged in the upper ejection cavity and the lower ejection cavity in the upper ejection cavity, the upper sliding block and the lower sliding block are respectively fixed with an upper top plate and a lower top plate, the opposite ends of the upper top plate and the lower top plate respectively penetrate through the control seat in the vertical direction to extend into the inner cavity to abut against the upper step surface and the lower step surface of the inner block, the opposite ends of the upper top plate and the lower top plate are arranged to be inclined with the upper step surface and the lower step surface of the inner hole, one ends, far away from each other, of the upper top plate and the lower top plate respectively penetrate through the outer walls of the upper side and the lower side of the control seat, the opposite sides of the upper sliding block and the lower sliding block are respectively connected with the upper ejection cavity and the lower ejection cavity through the upper spring and the lower spring and are close to the inner cavity wall of the side, the front side of the movable cavity is connected between the hydraulic control one-way valve and the port A2 of the electromagnetic reversing valve in parallel through the on-off valve, the rear side of the movable cavity is connected between the port A1 of the electromagnetic reversing valve and the front movable cavity, the port A1 of the front drive cavity and the electromagnetic reversing valve are provided with the backspacing on-off on-off valves, the inner walls, which are respectively arranged on the inner walls which are opposite from top and bottom of the limiting plate, and are respectively used for oppositely extending after the movable seat and the fixed by matching with the fixed by clamping of the movable seat and the fixed seat And the upper top plate and the lower top plate extending out of the outer walls of the upper side and the lower side of the control seat are fixed limiting plates for limiting and moving backwards.
Preferably: and a hydraulic accumulator for accumulating and supplementing pressure is connected in parallel between the hydraulic control one-way valve and the rear driving cavity.
By adopting the technical scheme, when in use, the steel cylinder body is clamped into the open groove formed in the side wall of the fixed seat and clamped into the arc-shaped clamping groove for further limiting, then the electromagnetic directional valve is switched from the middle position to the second position, when the second position is reached, the port A1 is communicated with the port A4, the port A2 is communicated with the port A3, hydraulic oil enters the rear driving cavity of the reciprocating plunger pump through the electromagnetic directional valve and the hydraulic control one-way valve from the oil supply pipeline, the hydraulic oil pushes the driving piston to slide in the direction of the front driving cavity and drives the main board connected through the connecting rod to move towards the fixed seat, the main board is connected with the movable seat through two push plates which are bilaterally symmetrical along the central axis of the movable seat, so that after the movable seat and the fixed seat are pushed to approach and contact with the fixed seat through the bilaterally symmetrical two push plates, the interior of the front driving cavity passes through the port A1 and the port A4 of the electromagnetic directional valve, the hydraulic oil is sent back from an oil return pipeline to fix the steel cylinder body, part of the hydraulic oil enters a hydraulic accumulator to accumulate pressure, after the hydraulic oil is fixed in place, the on-off valve is switched to a passage state, at the moment, the hydraulic oil stops entering the rear driving cavity and enters the front side of the moving cavity after passing through the on-off valve to push the sliding plate in the moving cavity to slide towards the rear side, and in the sliding process, the ejector rod is driven to push the inner cavity towards the rear side, the inner block in the inner cavity also moves towards the rear side under the driving of the ejector rod, the opposite ends of the upper top plate and the lower top plate respectively penetrate through the control seat along the vertical direction to extend into the inner cavity to abut against the upper trapezoidal surface and the lower trapezoidal surface of the inner block, the opposite ends of the upper top plate and the lower top plate are arranged in an inclined shape matched with the upper trapezoidal surface and the lower trapezoidal surface of the inner hole, so that the upper sliding block and the lower sliding block in the upper ejection cavity and the lower ejection cavity are respectively driven to upwards and downwards slide along the vertical direction along with the backward movement of the inner block, the upper spring and the lower spring are stretched, one ends of the upper top plate and the lower top plate, which are far away from each other, are respectively pushed out and slide along the side walls of the fixed limiting plates on the upper inner wall and the lower inner wall of the limiting plates, the fixed limiting plates limit the upper top plate and the lower top plate to move backwards, hydraulic oil in the rear side of the moving cavity is sent back from an oil return pipeline after passing through a port A1 and a port A4 of the electromagnetic directional valve, then the electromagnetic directional valve is switched to a normal state, the normal state is a middle position, the port A3 is stopped, the port A1 is simultaneously communicated with the port A2 and the port A4, the hydraulic oil is stopped from being sent, at the moment, on one hand, the hydraulic control one-way valve is arranged to prevent the hydraulic oil fed into the rear driving cavity from reversely rushing back to cause the driving piston to move forwards in the direction of the driving cavity, so as to ensure the stability of the driving piston against the connecting rod, and keep the limiting and clamping effect on the moving seat, on the other hand, the hydraulic control one-way of the upper top plate is realized by the arrangement of the upper top plate, The lower top plate is matched with a structure of a limiting plate to limit the control seat, the hydraulic accumulator discharges pressure after oil supply is stopped to maintain the stability of a driving piston, the moving seat is prevented from being separated due to vibration in the welding process after clamping and fixing, the welding quality is improved, after welding is completed, the electromagnetic reversing valve is switched to a first position, a port A3 is communicated with a port A1, a port A2 is communicated with a port A4, hydraulic oil passes through the port A3 and the port A1 from an oil supply pipeline and passes through the electromagnetic reversing valve, the backspacing on-off valve is switched to an off state, the hydraulic oil enters the rear side of the moving cavity after passing through the electromagnetic reversing valve, a sliding plate in the moving cavity is pushed to slide towards the front side, in the sliding process, the ejector rod is driven to move towards the front side, the inner block in the inner cavity is driven by the ejector rod to move towards the front side, after the support of the inner block is lost, under the return acting force of an upper spring and a lower spring, the upper top plate and the lower top plate are driven to relatively approach, the fixed limit plate stops limiting the upper top plate and the lower top plate, hydraulic oil in the front side of the moving cavity passes through a port A2 and a port A4 of the electromagnetic directional valve and then is sent back from an oil return pipeline, the back-off valve is switched to a passage state, a large part of hydraulic oil is introduced into a front driving cavity of the reciprocating plunger pump, a jacking driving piston slides towards a back driving cavity and extrudes the hydraulic oil in the back driving cavity to move towards the direction of the hydraulic control one-way valve, the hydraulic oil stored in the hydraulic accumulator is released, the other part of hydraulic oil passes through the electromagnetic directional valve and then enters a control oil circuit of the hydraulic control one-way valve, a liquid-air one-way valve is opened, the hydraulic oil in the back driving cavity passes through the hydraulic control one-way valve, the port A2 and the port A4 of the electromagnetic directional valve and then is sent back from the oil return pipeline, the driving piston slides towards the back driving cavity to drive a main plate connected with the connecting rod to move towards the direction of the back driving piston and away from the fixed seat, make to remove the seat and keep away from the fixing base and stop fixed steel bottle body, be convenient for take off the steel bottle body of accomplishing the processing. Compared with the prior art, convenient to use is convenient for press from both sides tight fixed use to the steel bottle body, is difficult to appear vibration throw-off phenomenon in welding process after pressing from both sides tight fixed simultaneously, has improved welding quality.
The invention also discloses a use method of the welding fixture for steel cylinder production, which is characterized by comprising the following steps:
s1, clamping and fixing: the steel cylinder body is clamped into a slot arranged on the side wall of the fixed seat and is clamped into the arc-shaped clamping groove for further limiting, then the electromagnetic directional valve is switched to a second position from the middle position, in the second position, port a1 is in communication with port a4, port a2 is in communication with port A3, hydraulic oil is communicated from the oil supply line through port A3 and port a2, enters a rear driving cavity of the reciprocating plunger pump through an electromagnetic directional valve and a hydraulic control one-way valve, pushes a driving piston to slide towards the front driving cavity and drives a main plate connected through a connecting rod to move towards a fixed seat, after the moving seat and the fixed seat are pushed to be close to each other and to be in extrusion contact through the two push plates in bilateral symmetry, hydraulic oil in the front driving cavity is sent back from an oil return pipeline after passing through a port A1 and a port A4 of the electromagnetic directional valve, the steel cylinder body is fixed, and part of the hydraulic oil enters a hydraulic energy accumulator to store pressure;
s2, control limiting: the on-off valve is switched to a passage state, at the moment, hydraulic oil stops entering the rear driving cavity, then enters the front side of the moving cavity after passing through the on-off valve, a sliding plate in the moving cavity is pushed to slide towards the rear side, in the sliding process, the ejector rod is driven to push towards the rear side and enter the inner cavity, the inner block in the inner cavity is driven by the ejector rod to move towards the rear side, the opposite ends of the upper top plate and the lower top plate respectively penetrate through the control seat along the vertical direction and extend into the inner cavity to abut against the upper ladder surface and the lower ladder surface of the inner block, the upper top plate and the lower top plate are driven to push upwards and downwards along the vertical direction along with the backward movement of the inner block, the upper sliding block and the lower sliding block in the upper ejection cavity and the lower ejection cavity are respectively driven to slide upwards and downwards, the upper spring and the lower spring are stretched, the ends of the upper top plate and the lower top plate, which are far away from each other ends, are respectively pushed out and slide along the side walls of the fixed limiting plates on the opposite inner walls of the upper limiting plate and the lower limiting plate, the fixed limiting plate limits the upper top plate and the lower top plate to move backwards, and hydraulic oil in the rear side of the moving cavity is returned from an oil return pipeline after passing through a port A1 and a port A4 of the electromagnetic directional valve;
s3, clamping and positioning: then the electromagnetic directional valve is switched to a normal state, the normal state is a middle position, the port A3 is cut off, the port A1 is communicated with the port A2 and the port A4 at the same time, and hydraulic oil stops being fed;
s4, completing releasing: after welding is completed, the electromagnetic directional valve is switched to a first position, the port A3 is communicated with the port A1, the port A2 is communicated with the port A4, hydraulic oil passes through the port A3 and the port A1 from an oil supply pipeline and passes through the electromagnetic directional valve, the backspacing on-off valve is switched to an off state, the hydraulic oil enters the rear side of the moving cavity after passing through the electromagnetic directional valve, a sliding plate in the moving cavity is pushed to slide towards the front side, in the sliding process, the ejector rod is driven to move towards the front side, an inner block in the inner cavity also moves towards the front side under the driving of the ejector rod, after the support of the inner block is lost, under the restoring acting force of an upper spring and a lower spring, the upper top plate and the lower top plate are driven to relatively approach, a fixed limiting plate stops limiting the upper top plate and the lower top plate, and the hydraulic oil in the front side of the moving cavity is sent back from an oil return pipeline after passing through the port A2 and the port A4 of the electromagnetic directional valve;
s5, rollback reset: the backspacing on-off valve is switched to a return passage state, a large part of hydraulic oil is introduced into a front driving cavity of the reciprocating plunger pump, the jacking driving piston slides towards a rear driving cavity and extrudes the hydraulic oil in the rear driving cavity to move towards the direction of the hydraulic control one-way valve, the hydraulic oil accumulated in the hydraulic energy accumulator is released, the other part of hydraulic oil enters a control oil circuit of the hydraulic control one-way valve after passing through the electromagnetic directional valve, a liquid-air one-way valve is opened, the hydraulic oil in the rear driving cavity passes through the hydraulic control one-way valve, a port A2 and a port A4 of the electromagnetic directional valve and then is returned from an oil return pipeline, the driving piston slides towards the rear driving cavity to drive a main board connected with a connecting rod to move towards the direction far away from the fixed seat, so that the movable seat moves away from the fixed seat and stops fixing the steel cylinder body, and the steel cylinder body which is welded is convenient to take down.
By adopting the technical scheme, the relative position of the movable seat and the fixed seat is adjusted by controlling the hydraulic oil circuit, the steel cylinder body is clamped and fixed, and compared with the prior art which needs a complex mechanical mechanism to realize fixation, the structure is simple and convenient to use, a control limit component for limiting, fixing and preventing loosening of the movable seat after the movable seat and the fixed seat are matched, clamped and fixed is arranged on the side wall of the movable seat far away from the fixed seat, after the movable seat and the fixed seat realize clamping and fixing of the steel cylinder body, the movable seat is limited and fixed by the control limit component to prevent the movable seat from moving and loosening, after the clamping and fixing of the steel cylinder body and the control limit component limit the movable seat, on one hand, the hydraulic oil fed into the rear driving cavity is prevented from reversely rushing back to cause the driving piston to move towards the front driving cavity by the arrangement of the hydraulic control one-way valve, in order to guarantee the stability that the drive piston withstood the connecting rod, make it keep the spacing clamping action to removing the seat, on the other hand is through last roof, the structure of roof cooperation limiting plate down comes to carry on spacingly to the control seat, and hydraulic accumulator emits pressure after stopping the fuel feeding and is used for maintaining the stability of drive piston, prevent to remove the seat and receive the vibration and throw off in the welding process after pressing from both sides the clamp fixation, improve welding quality, after the welding is accomplished, control the spacing subassembly of control earlier to roll back and reset the removal of the relative fixing base of control removal seat again through the control of oil circuit and reset, the structure is reliable to use simply.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic longitudinal sectional view of a limiting plate and a control seat according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, the invention discloses a welding fixture for steel cylinder production, which comprises a fixed seat 1 and a movable seat 2 which are opposite from each other in front and back, wherein the side wall of one side of the fixed seat 1 opposite to the side wall of the movable seat 2 is symmetrically provided with semicircular slots 3, the bottom of an inner slot of each slot 3 is provided with an arc-shaped clamping slot, and in the specific embodiment of the invention, one side of the movable seat 2, which is far away from the fixed seat 1, is provided with a control clamping assembly for pushing the movable seat 2 to move relative to the fixed seat 1 to be matched with the fixed seat 1 to clamp a steel cylinder body.
By adopting the technical scheme, when the steel cylinder fixing device is used, the steel cylinder body is clamped into the groove 3 formed in the side wall of the fixing seat 1 and is clamped into the arc-shaped clamping groove for further limiting, and then the clamping control assembly is arranged on one side, far away from the fixing seat 1, of the moving seat 2 and pushes the moving seat 2 to move relative to the fixing seat 1, so that the steel cylinder body is fixed after the moving seat 2 is close to and squeezed with the fixing seat 1, and compared with the prior art that a complex mechanical mechanism is needed for fixing, the steel cylinder fixing device is simple and reliable in structure.
In the specific embodiment of the invention, the control clamping assembly comprises a reciprocating plunger pump 11, an electromagnetic directional valve 12 and a hydraulic control one-way valve 13, a driving piston 14 is arranged on the driving side of the reciprocating plunger pump 11, the driving piston 14 is connected with a main plate 19 through a connecting rod 15, the main plate 19 is connected with the moving seat 2 through two push plates 16 which are bilaterally symmetrical along the central axis of the moving seat 2, the rodless side of the driving piston 14 is a rear driving cavity 17, the rod side of the driving piston 14 is a front driving cavity 18, the electromagnetic directional valve 12 is a three-position four-way valve and is provided with a left electromagnetic coil and a right electromagnetic coil, a valve core is normally positioned at a middle position by a left spring and a right spring, and is driven by the left electromagnetic coil or the right electromagnetic coil to deviate to a first position or a second position; normally in the neutral position, port A3 is off, and port a1 is in communication with both port a2 and port a 4; in the first position, port A3 and port a1 are in communication, and port a2 and port a4 are in communication; in the second position, port a1 and port a4 are in communication, and port a2 and port A3 are in communication; the port A1 of the electromagnetic directional valve 12 is communicated with the front driving cavity 18, the port A2 of the electromagnetic directional valve 12 is communicated with the rear driving cavity 17 through the hydraulic control one-way valve 13, the control oil path of the hydraulic control one-way valve 13 is communicated with the port A1 of the electromagnetic directional valve 12, the port A3 of the electromagnetic directional valve 12 is connected with the oil supply pipeline 4, and the port A4 of the electromagnetic directional valve 12 is connected with the oil return pipeline 5.
By adopting the technical scheme, when in use, the steel cylinder body is clamped into the open slot 3 formed in the side wall of the fixed seat 1 and clamped into the arc-shaped clamping slot for further limiting, then the electromagnetic directional valve 12 is switched to a second position from a middle position, when the second position is reached, the port A1 is communicated with the port A4, the port A2 is communicated with the port A3, hydraulic oil enters the rear driving cavity 17 of the reciprocating plunger pump 11 from the oil supply pipeline 4 through the port A3 and the port A2 and through the electromagnetic directional valve 12 and the hydraulic control one-way valve 13, the piston 14 is pushed to slide in the direction of the front driving cavity 18 and drive the main plate 19 connected through the connecting rod 15 to move in the direction of the fixed seat 1, the main plate 19 is connected with the movable seat 2 through two push plates 16 which are bilaterally symmetrical along the central axis of the movable seat 2, so that the movable seat 2 and the fixed seat 1 are pushed to approach and extrude by the two push plates 16 in a bilateral symmetry manner, the steel cylinder body is fixed, after the steel cylinder body is fixed, the electromagnetic directional valve 12 is switched to a normal state, the normal state is a middle position, the port A3 is cut off, the port A1 is communicated with the port A2 and the port A4 at the same time, the hydraulic oil stops feeding, the hydraulic control one-way valve 13 is arranged to prevent the hydraulic oil fed into the rear driving cavity 17 from being reversely flushed back to cause the driving piston 14 to move towards the direction of the front driving cavity 18, so that the stability of the driving piston 14 against the connecting rod 15 is ensured, the driving piston 14 keeps the limiting and clamping effect on the moving seat 2, the phenomenon that the hydraulic oil is separated due to vibration in the welding process after clamping and fixing is avoided, the welding quality is improved, after the welding is completed, the electromagnetic directional valve 12 is switched to a first position, the port A3 is communicated with the port A1, the port A2 is communicated with the port A4, most of the hydraulic oil passes through the electromagnetic directional valve 12 from an oil supply pipeline through the port A3 and the port A1, and then is introduced into the front driving cavity 18 of the reciprocating plunger pump 11, the jacking driving piston 14 slides towards the direction of the rear driving cavity 17, and extrudes hydraulic oil in the rear driving cavity 17 to move towards the direction of the hydraulic control one-way valve 13, the other part of the hydraulic oil enters a control oil path of the hydraulic control one-way valve 13 after passing through the electromagnetic directional valve 12, and the hydraulic air one-way valve 13 is opened, so that the hydraulic oil in the rear driving cavity 17 passes through the hydraulic control one-way valve 13, the port A2 and the port A4 of the electromagnetic directional valve 12 and is sent back from the oil return pipeline 5.
In the specific embodiment of the invention, a side wall of the movable seat 2 away from the fixed seat 1 is provided with a control limit component for limiting, fixing and preventing the movable seat 2 from loosening after the movable seat 2 and the fixed seat 1 are clamped and fixed in a matching manner.
Through adopting above-mentioned technical scheme, in order to further prevent pressing from both sides tight fixed back to the steel bottle body, vibration among the welding process makes and removes the relative fixing base 1 front and back and throw off of seat 2, it is used for carrying out spacing fixed control spacing subassembly that prevents to take off to removing seat 2 after removing seat 2 and fixing base 1 cooperation clamp fixed to remove seat 2 to be provided with on the lateral wall of one side of keeping away from fixing base 1, remove seat 2 and fixing base 1 and realize pressing from both sides tight fixed back to the steel bottle body, carry out spacing fixed by the spacing subassembly of control to removing seat 2, it takes off to prevent to appear removing the displacement of seat 2 and take off.
In the specific embodiment of the invention, the control limit component comprises a connecting plate 6 fixed on the side wall of the fixed seat 1, a U-shaped limit plate 7 fixed on the connecting plate 6, a control seat 21 fixed in the middle of the side wall of the movable seat 2 far away from the fixed seat 1, and a movable cavity 22 arranged inside the control seat 21, two ends of the limit plate 7 far away from the connecting plate 6 respectively extend to the upper side and the lower side of the movable seat 2, a sliding plate 23 is arranged inside the movable cavity 22 in a front-back sliding manner relative to the slot 3, an inner cavity 24 is arranged inside the control seat 21 and on the side of the movable cavity 22 far away from the movable seat 2, an ejector rod 25 is fixed on the side wall of the sliding plate 23 facing the inner cavity 24, one end of the ejector rod 25 passes through the movable cavity 22 and the control seat 21 and extends into the inner cavity 24 to be connected with an inner block 26 with an isosceles trapezoid longitudinal section, an upper ejection cavity 27 and a lower ejection cavity 28 are respectively arranged inside the control seat 21 and on the upper side and the lower side of the inner cavity 24, an upper sliding block 29 and a lower sliding block 30 are respectively arranged in the upper ejection cavity 27 and the lower ejection cavity 28 in an up-and-down sliding manner, an upper top plate 31 and a lower top plate 32 are respectively fixed on the upper sliding block 29 and the lower sliding block 30, opposite ends of the upper top plate 31 and the lower top plate 32 respectively penetrate through the control seat 21 in the vertical direction and extend into the inner cavity 24 to abut against the upper and lower terraces of the inner block 26, opposite ends of the upper top plate 31 and the lower top plate 32 are arranged in an inclined manner matched with the upper and lower terraces of the inner hole 26, one ends of the upper top plate 31 and the lower top plate 32, which are far away from each other, respectively penetrate through the outer walls of the upper side and the lower side of the control seat 21, opposite sides of the upper sliding block 29 and the lower sliding block 30 are respectively connected with the inner cavity walls, close to the sides, of the upper ejection cavity 27 and the lower ejection cavity 28, through an on-off valve 35, the front side of the moving cavity 22 is connected in parallel between the hydraulic check valve 13 and a port A2 of the electromagnetic directional valve 12, the rear side of the movable cavity 22 is connected in parallel between a port A1 of the electromagnetic directional valve 12 and the front drive cavity 18, a backspacing on-off valve 10 is arranged between the front drive cavity 18 and a port A1 of the electromagnetic directional valve 12, and fixed limiting plates 8 used for limiting and moving backwards an upper top plate 31 and a lower top plate 32 extending out of the outer walls of the upper side and the lower side of the control seat 21 after the movable seat 2 and the fixed seat 1 are matched, clamped and fixed are respectively arranged on the upper inner wall and the lower inner wall of the limiting plate 7.
In the embodiment of the invention, a hydraulic accumulator 9 for accumulating and supplementing pressure is connected in parallel between the hydraulic control one-way valve 13 and the rear driving cavity 17.
By adopting the technical scheme, when in use, the steel cylinder body is clamped into the open slot 3 formed in the side wall of the fixed seat 1 and clamped into the arc-shaped clamping slot for further limiting, then the electromagnetic directional valve 12 is switched to a second position from a middle position, when the second position is reached, the port A1 is communicated with the port A4, the port A2 is communicated with the port A3, hydraulic oil enters the rear driving cavity 17 of the reciprocating plunger pump 11 from the oil supply pipeline 4 through the port A3 and the port A2 and through the electromagnetic directional valve 12 and the hydraulic control one-way valve 13, the piston 14 is pushed to slide in the direction of the front driving cavity 18 and drive the main plate 19 connected through the connecting rod 15 to move in the direction of the fixed seat 1, the main plate 19 is connected with the movable seat 2 through two push plates 16 which are bilaterally symmetrical along the central axis of the movable seat 2, so that the movable seat 2 and the fixed seat 1 are pushed to approach and extrude by the two push plates 16 in a bilateral symmetry manner, hydraulic oil in the front driving cavity 18 is sent back from the oil return pipeline 5 after passing through a port A1 and a port A4 of the electromagnetic directional valve 12 to fix the steel cylinder body, part of the hydraulic oil enters the hydraulic accumulator 9 for pressure accumulation, after being fixed in place, the on-off valve 35 is switched to a passage state, at the moment, the hydraulic oil stops entering the rear driving cavity 17 and enters the front side of the moving cavity 22 after passing through the on-off valve 35 to push the sliding plate 23 in the moving cavity 22 to slide towards the rear side, and in the sliding process, the ejector rod 25 is driven to be ejected towards the rear side into the inner cavity 24, the inner block 26 in the inner cavity 24 is also moved towards the rear side under the driving of the ejector rod 25, opposite ends of the upper top plate 31 and the lower top plate 32 respectively penetrate through the control seat 21 in the vertical direction to extend into the inner cavity 24 to be abutted against upper and lower terraces of the inner block 26, opposite ends of the upper top plate 31 and the lower top plate 32 are arranged in an inclined shape matched with the upper and lower terraces of the inner hole 26, thereby, as the inner block 26 moves to the rear side, the upper top plate 31 and the lower top plate 32 are driven to be respectively ejected upwards and downwards along the vertical direction, the upper slider 29 and the lower slider 30 in the upper ejection cavity 27 and the lower ejection cavity 28 are respectively driven to slide upwards and downwards, the upper spring 33 and the lower spring 34 are stretched, the ends, away from each other, of the upper top plate 31 and the lower top plate 32 are respectively pushed out and slide along the side wall of the fixed limiting plate 8 on the upper inner wall and the lower inner wall of the limiting plate 7, the fixed limiting plate 8 limits the upper top plate 31 and the lower top plate 32 to move backwards, hydraulic oil inside the rear side of the moving cavity 22 passes through the port A1 and the port A4 of the electromagnetic directional valve 12 and is sent back from the oil return pipeline 5, then the electromagnetic directional valve 12 is switched to the normal state, the normal state is the middle position, the port A3 is stopped, the port A1 is simultaneously communicated with the port A2 and the port A4, and the hydraulic oil is stopped being sent in, at this time, on one hand, the reverse flushing back of the hydraulic oil fed into the rear driving cavity 17 is avoided by the arrangement of the one-way valve 13 The driving piston 14 is caused to move towards the direction of the forward driving cavity 18, so as to ensure the stability of the driving piston 14 against the connecting rod 15, so that the driving piston keeps the limiting clamping effect on the moving seat 2, on the other hand, the upper top plate 31 and the lower top plate 32 are matched with the structure of the limiting plate 7 to limit the control seat 21, the hydraulic accumulator 9 discharges pressure after oil supply is stopped for maintaining the stability of the driving piston 14, the moving seat 2 is prevented from being vibrated and separated in the welding process after clamping and fixing, the welding quality is improved, after welding is completed, the electromagnetic reversing valve 12 is switched to the first position, the port A3 is communicated with the port A1, the port A2 is communicated with the port A4, hydraulic oil passes through the port A3 and the port A1 from an oil supply pipeline and passes through the electromagnetic reversing valve 12, the backspacing on-off valve 10 is switched to an off state, the hydraulic oil enters the rear side inner part of the moving cavity 22 after passing through the electromagnetic reversing valve 12, and pushes the sliding plate 23 in the moving cavity 22 to slide towards the forward side, and in the sliding process, the ejector rod 25 is driven to move towards the front side, the inner block 26 in the inner cavity 24 is driven by the ejector rod 25 to move towards the front side, after the support of the inner block 26 is lost, the upper top plate 31 and the lower top plate 32 are driven to relatively approach under the restoring acting force of the upper spring 33 and the lower spring 34, the fixed limit plate 8 stops limiting the upper top plate 31 and the lower top plate 32, the hydraulic oil in the front side of the moving cavity 22 passes through the port A2 and the port A4 of the electromagnetic directional valve 12 and is sent back from the oil return pipeline 5, then the backspacing on-off valve 10 is switched back to the passage state, a large part of hydraulic oil is introduced into the front driving cavity 18 of the reciprocating plunger pump 11 to prop the driving piston 14 to slide towards the rear driving cavity 17 and extrude the hydraulic oil in the rear driving cavity 17 to move towards the hydraulic one-way valve 13, the hydraulic oil stored in the hydraulic accumulator 9 is released, and the other part of the hydraulic oil passes through the electromagnetic directional valve 12 and then enters the control oil circuit of the hydraulic one-way valve 13, open empty check valve 13 of liquid, make the hydraulic oil in the back drive chamber 17 pass through hydraulic control check valve 13, electromagnetic directional valve 12's port A2 and port A4 after, send back from oil return line 5, drive piston 14 slides to back drive chamber 17 direction and drives mainboard 19 that connecting rod 15 connects and remove to keeping away from fixing base 1 direction for remove seat 2 and keep away from fixing base 1 and stop fixed steel bottle body, be convenient for take off the steel bottle body that accomplishes the processing. Compared with the prior art, convenient to use is convenient for press from both sides tight fixed use to the steel bottle body, is difficult to appear vibration throw-off phenomenon in welding process after pressing from both sides tight fixed simultaneously, has improved welding quality.
The invention also discloses a use method of the welding fixture for steel cylinder production, which comprises the following steps:
s1, clamping and fixing: the steel cylinder body is clamped into a slot 3 formed in the side wall of a fixed seat 1 and clamped into an arc-shaped clamping groove for further limiting, then an electromagnetic directional valve 12 is switched to a second position from a middle position, when the second position is reached, a port A1 is communicated with a port A4, a port A2 is communicated with a port A3, hydraulic oil enters a rear driving cavity 17 of a reciprocating plunger pump 11 through an electromagnetic directional valve 12 and a hydraulic control one-way valve 13 from an oil supply pipeline 4 through the port A3 and the port A2, the hydraulic oil pushes a driving piston 14 to slide in the direction of a front driving cavity 18 and drives a main plate 19 connected through a connecting rod 15 to move in the direction of the fixed seat 1, after the movable seat 2 is pushed to be close to and pressed against the fixed seat 1 through two push plates 16 in bilateral symmetry, the hydraulic oil in the front driving cavity 18 is sent back from an oil return pipeline 5 after passing through the port A1 and the port A4 of the electromagnetic directional valve 12, and the steel cylinder body is fixed, part of hydraulic oil enters the hydraulic accumulator 9 to accumulate pressure;
s2, control limiting: the on-off valve 35 is switched to a passage state, at the moment, hydraulic oil stops entering the rear driving cavity 17 and enters the front side of the moving cavity 22 through the on-off valve 35, the sliding plate 23 inside the moving cavity 22 is pushed to slide towards the rear side, the ejector rod 25 is driven to be ejected into the inner cavity 24 towards the rear side in the sliding process, the inner block 26 in the inner cavity 24 is driven by the ejector rod 25 to move towards the rear side, opposite ends of the upper ejector plate 31 and the lower ejector plate 32 respectively penetrate through the control seat 21 in the vertical direction to extend into the inner cavity 24 to be abutted against the upper ladder surface and the lower ladder surface of the inner block 26, the upper ejector plate 31 and the lower ejector plate 32 are driven to be ejected upwards and downwards along the vertical direction along with the movement of the inner block 26 towards the rear side, the upper slider 29 and the lower slider 30 in the upper ejector cavity 27 and the lower ejector cavity 28 are respectively driven to slide upwards and downwards, the upper spring 33 and the lower spring 34 are stretched, and one ends of the upper ejector plate 31 and the lower ejector plate 32 which are far away from each other are respectively pushed out, the hydraulic oil in the rear side of the moving cavity 22 passes through a port A1 and a port A4 of the electromagnetic directional valve 12 and then is returned from the oil return pipeline 5;
s3, clamping and positioning: then the electromagnetic directional valve 12 is switched to a normal state, the normal state is a middle position, the port A3 is cut off, the port A1 is communicated with the port A2 and the port A4 at the same time, and hydraulic oil stops being fed;
s4, completing releasing: after welding is finished, the electromagnetic directional valve 12 is switched to the first position, the port A3 is communicated with the port A1, the port A2 is communicated with the port A4, hydraulic oil passes through the port A3 and the port A1 from an oil supply pipeline and passes through the electromagnetic directional valve 12, the backspacing on-off valve 10 is switched to an off state, the hydraulic oil enters the rear inner side of the movable cavity 22 after passing through the electromagnetic directional valve 12, the sliding plate 23 in the movable cavity 22 is pushed to slide towards the front side, in the sliding process, the ejector rod 25 is driven to move towards the front side, the inner block 26 in the inner cavity 24 is driven by the ejector rod 25 to move towards the front side, after the support of the inner block 26 is lost, under the restoring acting force of the upper spring 33 and the lower spring 34, the upper top plate 31 and the lower top plate 32 are driven to relatively approach, the fixed limit plate 8 stops limiting the upper top plate 31 and the lower top plate 32, the hydraulic oil in the front inner side of the movable cavity 22 passes through the port A2 and the port A4 of the electromagnetic directional valve 12, returning from the return line 5;
s5, rollback reset: the retraction on-off valve 10 is switched back to the on-off state, a large part of hydraulic oil is introduced into the front driving chamber 18 of the reciprocating plunger pump 11, the driving piston 14 is pushed to slide towards the rear driving chamber 17, and the hydraulic oil in the rear driving cavity 17 is extruded to move towards the hydraulic control one-way valve 13, the hydraulic oil accumulated in the hydraulic energy accumulator 9 is released, the other part of the hydraulic oil enters a control oil path of the hydraulic control one-way valve 13 after passing through the electromagnetic directional valve 12, after the hydraulic-air check valve 13 is opened and the hydraulic oil in the rear drive chamber 17 passes through the pilot check valve 13, the port A2 of the electromagnetic directional valve 12 and the port A4, returning from the oil return pipeline 5, the driving piston 14 slides towards the back driving cavity 17 to drive the main board 19 connected with the connecting rod 15 to move towards the direction far away from the fixed seat 1, make and remove seat 2 and keep away from fixing base 1 and remove and stop fixed steel bottle body, be convenient for take off the steel bottle body of accomplishing welding process.
By adopting the technical scheme, the relative position of the movable seat 2 and the fixed seat 1 is adjusted by controlling a hydraulic oil circuit, the steel cylinder body is clamped and fixed, compared with the prior art which needs a complex mechanical mechanism to realize the fixation, the structure is simple and the use is convenient, a control limit component for limiting and fixing the movable seat 2 after the movable seat 2 and the fixed seat 1 are matched, clamped and fixed and preventing the loosening is arranged on the side wall of the movable seat 2 far away from the fixed seat 1, after the movable seat 2 and the fixed seat 1 realize the clamping and fixing of the steel cylinder body, the movable seat 2 is limited and fixed by the control limit component to prevent the movable seat 2 from moving and loosening, after the clamping and fixing of the steel cylinder body and the limiting of the movable seat 2 by the control limit component, on one hand, the hydraulic control one-way valve 13 is arranged to avoid the hydraulic oil supplied into the rear driving cavity 17 from reversely rushing back to cause the driving piston 14 to move towards the front driving cavity 18, in order to guarantee that drive piston 14 withstands the stability of connecting rod 15, make it keep the spacing clamping action to removing seat 2, on the other hand through last roof 31, roof 32 cooperates the structure of limiting plate 7 to carry on spacingly to control seat 21 down, and hydraulic accumulator 9 releases pressure after stopping the fuel feeding and is used for maintaining the stability of drive piston 14, prevent to remove seat 2 and receive the vibration and throw off in the welding process after pressing from both sides tight fixed back, improve welding quality, after the welding is accomplished, control spacing subassembly of control earlier back to reset through the control of oil circuit and then control the removal of removing seat 2 relative fixing base 1 and reset, the structure is reliable and simple to use.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. The utility model provides a welding jig for steel bottle production, includes relative fixing base (1) and removal seat (2) around, semicircular fluting (3) have been seted up to the symmetry on the relative one side lateral wall of fixing base (1) and removal seat (2), open at the bottom of fluting (3) inside groove is equipped with the arc and presss from both sides tight groove, its characterized in that: a control clamping assembly used for pushing the movable seat (2) to move relative to the fixed seat (1) and to be matched with the fixed seat (1) to clamp the steel cylinder body is arranged on one side, away from the fixed seat (1), of the movable seat (2);
the control clamping assembly comprises a reciprocating plunger pump (11), an electromagnetic directional valve (12) and a hydraulic control one-way valve (13), a driving piston (14) is arranged on the driving side of the reciprocating plunger pump (11), the driving piston (14) is connected with a main board (19) through a connecting rod (15), the main board (19) is connected with the moving seat (2) through two push boards (16) which are bilaterally symmetrical along the central axis of the moving seat (2), the rodless side of the driving piston (14) is a rear driving cavity (17), the rod side of the driving piston (14) is a front driving cavity (18), the electromagnetic directional valve (12) is a three-position four-way valve and is provided with a left electromagnetic coil and a right electromagnetic coil, the valve core is positioned at the middle position by a left spring and a right spring in a normal state, and is driven by the left electromagnetic coil or the right electromagnetic coil to deviate to a first position or a second position; normally in the neutral position, port A3 is off, and port a1 is in communication with both port a2 and port a 4; in the first position, port A3 and port a1 are in communication, and port a2 and port a4 are in communication; in the second position, port a1 and port a4 are in communication, and port a2 and port A3 are in communication; a port A1 of the electromagnetic directional valve (12) is communicated with the front drive cavity (18), a port A2 of the electromagnetic directional valve (12) is communicated with the rear drive cavity (17) through a hydraulic control one-way valve (13), a control oil path of the hydraulic control one-way valve (13) is communicated with a port A1 of the electromagnetic directional valve (12), a port A3 of the electromagnetic directional valve (12) is connected with an oil supply pipeline (4), and a port A4 of the electromagnetic directional valve (12) is connected with an oil return pipeline (5);
a control limiting component for limiting and fixing the moving seat (2) to prevent loosening after the moving seat (2) and the fixed seat (1) are matched, clamped and fixed is arranged on the side wall of one side of the moving seat (2) far away from the fixed seat (1);
the control limiting assembly comprises a connecting plate (6) fixed on the side wall of the fixing seat (1), a U-shaped limiting plate (7) fixed on the connecting plate (6), a control seat (21) fixed at the middle part of the side wall of one side of the fixing seat (1) and a movable cavity (22) arranged inside the control seat (21), wherein the two ends of the limiting plate (7) far away from the connecting plate (6) extend to the upper side and the lower side of the movable seat (2) respectively, a sliding plate (23) is arranged in the movable cavity (22) in a front-back sliding mode relative to the groove (3), an inner cavity (24) is arranged in one side of the control seat (21) and located in the movable cavity (22) and far away from the movable seat (2), an ejector rod (25) is fixed on the side wall of one side of the sliding plate (23) facing the inner cavity (24), one end of the ejector rod (25) penetrates through the movable cavity (22) and the control seat (21) extends into the inner cavity (24) and is connected with an inner block (26) with an isosceles trapezoid-shaped longitudinal section, an upper ejection cavity (27) and a lower ejection cavity (28) are respectively arranged in the control seat (21) and positioned at the upper side and the lower side of the inner cavity (24), an upper sliding block (29) and a lower sliding block (30) are respectively arranged in the upper ejection cavity (27) and the lower ejection cavity (28) in an up-and-down sliding manner, an upper top plate (31) and a lower top plate (32) are respectively fixed on the upper sliding block (29) and the lower sliding block (30), opposite ends of the upper top plate (31) and the lower top plate (32) respectively penetrate through the control seat (21) in the vertical direction to abut against the upper trapezoidal surface and the lower trapezoidal surface of the inner block (26), opposite ends of the upper top plate (31) and the lower top plate (32) are respectively arranged in an inclined manner matched with the upper trapezoidal surface and the lower trapezoidal surface of the inner block (26), one ends, far away from each other, of the upper top plate (31) and the lower top plate (32) respectively penetrate through the outer walls at the upper side and the lower side of the control seat (21), and the opposite sides of the upper sliding block (29) and the lower sliding block (30) are respectively through an upper spring (33) and a lower spring (34) respectively Go up ejecting chamber (27) and ejecting chamber (28) down and be close to the connection of side inner chamber wall, it connects in parallel between port A2 of pilot-operated check valve (13) and solenoid directional valve (12) through on-off valve (35) to remove chamber (22) front side, it connects in parallel between port A1 and the preceding driving chamber (18) of solenoid directional valve (12) to remove chamber (22) rear side, be provided with back-off on-off valve (10) between the port A1 of preceding driving chamber (18) and solenoid directional valve (12), be provided with respectively on the relative inner wall about limiting plate (7) and be used for carrying out spacing fixed limiting plate (8) that move backward to last roof (31) and lower roof (32) that extend both sides outer wall about control seat (21) after removing seat (2) and fixing base (1) cooperation clamp is fixed.
2. The welding fixture for steel cylinder production as claimed in claim 1, wherein: and a hydraulic accumulator (9) for accumulating and supplementing pressure is connected in parallel between the hydraulic control one-way valve (13) and the rear driving cavity (17).
3. The method for using the welding fixture for producing the steel cylinder, which is suitable for the steel cylinder production in the claim 2, is characterized by comprising the following steps:
s1, clamping and fixing: the steel cylinder body is clamped into a slot (3) formed in the side wall of a fixed seat (1) and clamped into an arc-shaped clamping groove for further limiting, then an electromagnetic directional valve (12) is switched to a second position from a middle position, a port A1 is communicated with a port A4, a port A2 is communicated with a port A3, hydraulic oil enters a rear driving cavity (17) of a reciprocating plunger pump (11) through an electromagnetic directional valve (12) and a hydraulic control one-way valve (13) from an oil supply pipeline (4) through the port A3 and the port A2, a piston (14) is pushed to slide in the direction of a front driving cavity (18) and drive a main plate (19) connected through a connecting rod (15) to move in the direction of the fixed seat (1), the movable seat (2) and the fixed seat (1) are pushed to approach and press in a pressing mode through two push plates (16) in a left-right symmetry mode, after the inside of the front driving cavity (18) passes through the port A1 and the port A4 of the electromagnetic directional valve (12), the oil is returned from the oil return pipeline (5) to fix the steel cylinder body, and part of hydraulic oil enters the hydraulic accumulator (9) to accumulate pressure;
s2, control limiting: the on-off valve (35) is switched to a passage state, at the moment, hydraulic oil stops entering the rear driving cavity (17) and enters the front side of the moving cavity (22) through the on-off valve (35) to push the sliding plate (23) inside the moving cavity (22) to slide towards the rear side, in the sliding process, the ejector rod (25) is driven to eject towards the rear side into the inner cavity (24), the inner block (26) in the inner cavity (24) is driven by the ejector rod (25) to move towards the rear side, opposite ends of the upper top plate (31) and the lower top plate (32) respectively penetrate through the control seat (21) in the vertical direction to extend into the inner cavity (24) to abut against upper and lower ladder surfaces of the inner block (26), and the upper sliding block (29) and the lower sliding block (30) in the upper ejection cavity (27) and the lower ejection cavity (28) are respectively driven to eject upwards and downwards along the vertical direction along with the backward movement of the inner block (26), the upper spring (33) and the lower spring (34) are stretched, one ends, far away from each other, of the upper top plate (31) and the lower top plate (32) are respectively pushed out and slide along the side wall of a fixed limiting plate (8) on the upper and lower opposite inner walls of a limiting plate (7), the fixed limiting plate (8) limits the upper top plate (31) and the lower top plate (32) to move backwards, and hydraulic oil in the rear side of the moving cavity (22) is sent back from the oil return pipeline (5) after passing through a port A1 and a port A4 of the electromagnetic reversing valve (12);
s3, clamping and positioning: then the electromagnetic directional valve (12) is switched to a normal state, the normal state is a middle position, the port A3 is cut off, the port A1 is communicated with the port A2 and the port A4 at the same time, and hydraulic oil stops being fed;
s4, completing releasing: after welding is finished, the electromagnetic directional valve (12) is switched to a first position, the port A3 is communicated with the port A1, the port A2 is communicated with the port A4, hydraulic oil passes through the port A3 and the port A1 from an oil supply pipeline and passes through the electromagnetic directional valve (12), the backspacing on-off valve (10) is switched to an off state, the hydraulic oil enters the rear inner part of the moving cavity (22) after passing through the electromagnetic directional valve (12) and pushes the sliding plate (23) in the moving cavity (22) to slide towards the front side, in the sliding process, the ejector rod (25) is driven to move towards the front side, the inner block (26) in the inner cavity (24) is driven by the ejector rod (25) to also move towards the front side, after the support of the inner block (26) is lost, the upper spring (33) and the lower spring (34) return acting force, the upper top plate (31) and the lower top plate (32) are driven to relatively approach, the fixed limit plate (8) stops limiting the upper top plate (31) and the lower top plate (32), the hydraulic oil in the front side of the movable cavity (22) passes through a port A2 and a port A4 of the electromagnetic directional valve (12) and is then returned from the oil return pipeline (5);
s5, rollback reset: the backspacing on-off valve (10) switches a loop state, a large part of hydraulic oil is introduced into a front driving cavity (18) of the reciprocating plunger pump (11), a jacking driving piston (14) slides towards a rear driving cavity (17) and extrudes the hydraulic oil in the rear driving cavity (17) to move towards a hydraulic control one-way valve (13), the hydraulic oil accumulated in a hydraulic energy accumulator (9) is released, the other part of hydraulic oil enters a control oil path of the hydraulic control one-way valve (13) after passing through an electromagnetic directional valve (12), the hydraulic control one-way valve (13) is opened, the hydraulic oil in the rear driving cavity (17) is returned from an oil return pipeline (5) after passing through the hydraulic control one-way valve (13), a port A2 and a port A4 of the electromagnetic directional valve (12), the driving piston (14) slides towards the rear driving cavity (17) to drive a main plate (19) connected with a connecting rod (15) to move towards a direction far away from the fixed seat (1), make to remove seat (2) and keep away from fixing base (1) and remove and stop fixed steel bottle body, be convenient for take off the steel bottle body of accomplishing welding process.
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| CN202011244218.3A CN112440072B (en) | 2020-11-10 | 2020-11-10 | Welding fixture for steel cylinder production and use method thereof |
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| CN102494128B (en) * | 2011-12-13 | 2015-08-26 | 重庆市科学技术研究院 | Pump control CVT electrohydraulic control system |
| DE102012209077B4 (en) * | 2012-05-30 | 2017-11-09 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Clamping device for clamping a rod-like workpiece and machine tool so |
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| CN108340621B (en) * | 2018-02-07 | 2023-04-28 | 扬力集团股份有限公司 | Hydraulic press with movable workbench |
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| CN111014748A (en) * | 2019-12-26 | 2020-04-17 | 浙江有道机械有限公司 | Drilling device and drilling method thereof |
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