Drawbench pulls out the draw technology of car and metal pipe material
Technical field
The present invention relates to the draw technology that a kind of drawbench pulls out car and used this a kind of metal pipe material that pulls out car.
Background technology
Drawbench is in order to the pipe material is carried out a kind of plant equipment that tube reducing subtracts wall or subtracts wall hole enlargement processing.
Existing drawbench carries out tube reducing to the base pipe of having cast and subtracts wall and add man-hour, at first will be to the processing of taking the lead of base pipe, to make the solid termination that to be pulled out the car clamping by drawbench, after the annealing solid-end head part of base pipe is passed mould by the mode of ejector sleeve, utilize the clamping device that pulls out car that termination portion is clamped again, by pulling out the car traction base pipe is extracted via mould then, and then decaptitated, cut away solid termination useless.So cycling reaches the finished size that needs until the base pipe.In the technological process of this processing mode, the base pipe must via repeatedly " take the lead ", the operation of " decaptitating ", both time-consuming also waste pipe material.
Existing drawbench carries out hole enlargement to the base pipe and adds man-hour, earlier the drawbench core bar is penetrated the base pipe, at the core bar head end internal mold is installed again, carries out hole enlargement processing by the mode of pulling internal mold or promotion base pipe then.In the mode of this hole enlargement processing, because the release end of base pipe is a free end, therefore unfettered power restriction causes the deviation from cylindrical form of the finished product that processes bigger.
Summary of the invention
The technical problem to be solved in the present invention is: shortcoming and deficiency in order to overcome prior art the invention discloses the draw technology that a kind of drawbench pulls out car and used this a kind of metal pipe material that pulls out car.
The technical solution used in the present invention is: a kind of drawbench pull out car, has car body, be provided with clamping device in the car body in order to clamping base pipe, clamping device includes by the taper clamp of Driven by Hydraulic Cylinder and the clamp pressure head supporting with it, clamping device also include by Driven by Hydraulic Cylinder in order to fill in the lining core of base pipe.
Can withdraw from the base pipe smoothly in order to finish the backsight core in drawing procedure, also be provided with the retaining plate that withdraws from the base pipe in order to auxiliary lining core in the car body, retaining plate is provided with disconnectable Non-return ring.
For simplified structure, handled easily, described taper clamp is driven by a composite hydraulic cylinder with the lining core.
A kind of draw technology of using the metal pipe material that above-mentioned drawbench pulls out car in this technology, is carried out tube reducing to the base pipe of casting and is subtracted wall and add man-hour, adopts following processing step:
A. ejector sleeve is gone into molded head: the base pipe is advanced in die cavity, make the base pipe walk out one section with as the pull head part from die cavity;
B. fill in the core clamping: the pull head of base pipe is partly filled in core and clamping by the clamping device that pulls out car;
C. draw: under the traction of pulling out car, the base pipe is pulled out from die cavity;
D. annealing: the base pipe is carried out annealing in process;
Repeat above-mentioned steps and reach required finished size until the base pipe;
Following processing step is adopted in the hole enlargement processing of base pipe:
A. bar is adorned mould: at the core bar head end internal mold is installed after the drawbench core bar is passed the base pipe;
B. ejector sleeve system head: the base pipe is advanced to internal mold, make internal mold enter the base pipe and advance a section with as the pull head part;
C. fill in the core clamping: the pull head of base pipe is partly filled in core and clamping by the clamping device that pulls out car;
D. draw: pull out car towards ejector sleeve direction pulling base pipe, the base pipe is pulled away from internal mold;
Repeating above-mentioned steps is drawn expansion to required finished size until the base pipe.
The invention has the beneficial effects as follows: the present invention has saved operation for the conventional process flow that pipe material tube reducing subtracts wall processing, saving of work and time and saving pipe material, and in the cycle operation of drawbench, its effect that plays is remarkable; For the hole enlargement processing of pipe material, the tubing deviation from cylindrical form that is processed by Processes and apparatus of the present invention is little, the product quality height.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation that drawbench of the present invention pulls out car.
1. taper clamps, 2. clamp pressure heads, 3. lining cores, 4. retaining plates, 41. Non-return rings among the figure
The specific embodiment
A kind of drawbench as shown in Figure 1 pull out car, has car body, be provided with clamping device in the car body in order to clamping base pipe, clamping device includes by the taper clamp 1 of Driven by Hydraulic Cylinder and the clamp pressure head 2 supporting with it, clamping device also include by Driven by Hydraulic Cylinder in order to fill in the lining core 3 of base pipe.
Can withdraw from the base pipe smoothly in order to finish backsight core 3 in drawing procedure, also be provided with the retaining plate 4 that withdraws from the base pipe in order to auxiliary lining core 3 in the car body, retaining plate 4 is provided with disconnectable Non-return ring 41.
For simplified structure, handled easily, taper clamp 1 is driven by a composite hydraulic cylinder with lining core 3.
A kind of draw technology of having used the metal pipe material that above-mentioned drawbench pulls out car in this technology, is carried out tube reducing to the base pipe of casting and is subtracted wall and add man-hour, adopts following processing step:
A. ejector sleeve is gone into molded head: the base pipe is advanced in die cavity, make the base pipe walk out one section with as the pull head part from die cavity;
B. fill in the core clamping: the pull head of base pipe is partly filled in core and clamping by the clamping device that pulls out car;
C. draw: under the traction of pulling out car, the base pipe is pulled out from die cavity;
D. annealing: the base pipe is carried out annealing in process;
Repeat above-mentioned steps and reach required finished size until the base pipe;
Following processing step is adopted in the hole enlargement processing of base pipe:
A. bar is adorned mould: at the core bar head end internal mold is installed after the drawbench core bar is passed the base pipe;
B. ejector sleeve system head: the base pipe is advanced to internal mold, make internal mold enter the base pipe and advance a section with as the pull head part;
C. fill in the core clamping: the pull head of base pipe is partly filled in core and clamping by the clamping device that pulls out car;
D. draw: pull out car towards ejector sleeve direction pulling base pipe, the base pipe is pulled away from internal mold;
Repeating above-mentioned steps is drawn expansion to required finished size until the base pipe.
Pull out car when base tube head end is carried out clamping, its composite hydraulic cylinder drives lining core 3 and fills in base tube head end inside, then composite hydraulic cylinder drives taper clamp 1 to 2 propellings of clamp pressure head, taper clamp 1 produces enough radial pressures thus and clamps base tube head end, the sawtooth of taper clamp 1 is bitten base tube head end outer wall, and under the effect of base pipe liner core 3, base tube head end can not be snapped flat because being subjected to powerful snap-in force, and because the effect of lining core 3 makes clamp more firm to the interlock of base pipe.
After finishing, the clamping operation can carry out drawing to the base pipe.After drawing finishes, pull out the lining core 3 of car and will from the pipe material, extract out, this moment composite hydraulic cylinder with taper clamp 1 post-tensioning, taper clamp 1 and clamp pressure head 2 mutual expansive forces disappear, the radial pressure of 1 pair of pipe material of taper clamp also disappears thereupon, clamp is no longer stung pipe; Simultaneously, lining core 3 bounces back under the driving of composite hydraulic cylinder, and cover pipe material is thereon also advanced with it, wait to manage when expecting to advance to retaining plate 4 positions of pulling out car, stopped by the Non-return ring on the retaining plate 4 41,3 in lining core can continue retraction by Non-return ring 41, so serves as a contrast core 3 and just can withdraw from the pipe material smoothly.
In actual production process, because drawbench need be processed the pipe material that differs in various apertures, size, the lining core 3 that therefore pulls out on the car all is dismountable with Non-return ring 41 on the retaining plate 4, can change different sizes to adapt to different process requirements.
Carrying out tube reducing at the pipe material subtracts in the conventional process flow of wall processing, the pipe material must be via the operation of repeatedly taking the lead, decaptitating, both time-consuming also waste pipe material, the present invention has then saved the operation of " taking the lead " and " decaptitating " for this process, saving of work and time and save the pipe material again, in the cycle operation of drawbench, its effect that plays is remarkable.In the process of pipe material hole enlargement processing, the present invention has adopted the expansion mode of drawing, pipe material is drawn in the process of expansion because pipe material finished product end can be subjected to the effect of contraction of tension, therefore draw and expand the pipe that comes out and expect its deviation from cylindrical form than little, the product quality height with the deviation from cylindrical form that pushes away the pipe material that the expansion mode processes.