Powder shaping press automatic stirring pay-off
Technical field
This technology relates to a kind of the automatic stirring pay-off of the powder compacting mo(u)ldenpress of preparation moulding after powder pressurization.
Background technology
Polytetrafluoroethylene (PTFE) (PTFE) belongs to one of existing a kind of macromolecule product, is the macromolecular compound through being polymerized by tetrafluoroethene. Because the fluorine atom in fluorocarbon polymer has very strong chemical bond power, compare with other similar plastics, there are more excellent chemical stability, corrosion-resistant, high temperature resistant, sealing, high lubricated, adhesion and good insulating properties. As engineering plastics, can be made into polyfluortetraethylene pipe, rod, band, plate etc. Can be widely used in the anticorrosion pipeline container that performance requirement is higher, valve seal and radar, high frequency Communication Equipment, electrical instrumentation etc.
Making polytetrafluoroethylene (PTFE) product generally need to be by its compression molding. Compression molding is named again compression molding, and compression molding is that powdery or granular resin are joined in the metal die die cavity of forcing press, makes it be full of whole mold cavity under the effect of pressure, then obtains prefabrication through the pressurization demoulding. Prefabrication is put into sintering furnace again, heat-agglomerating finished product.
Existing compression molding technology is to use hydraulic press. Manually place mould by workman, manually in mould, add powder and stir. After stirring, then the mould of filling with honest material is put into the fixing die cavity of hydraulic press, process oil press is suppressed. After having suppressed, also need to continue the finished product that process oil press makes mould inner pressure and eject, manually feeding. The omnidistance complete operation manually that needs, not only production efficiency is low, and material filling is inhomogeneous, and easily industrial accident occurs.
Utility model content
The utility model provides a kind of stirring pay-off of mo(u)ldenpress. This device energy automatic stirring feeding, powder stirring is even, send powder to mold cavity accurately and effectively. Can also automatically release moulding stock.
Advantage of the present utility model has been the fully automatic integral operation of press, has greatly alleviated operative employee's workload, and operating efficiency is high. A series of feedings process of getting does not all need manually to complete, and has completely cut off manual operation, more safe and reliable.
Automatic stirring pay-off described in the utility model, is provided with mold component in base plate (101) bottom, has die cavity (100) in mold component; Two closed slides (3) are installed on base plate, and guide rail plays transmission case body (1) by bearing support block (5) contiguous block (28) support and connection; Charging basket (4) is installed in transmission case body below, and charging basket does front-rear reciprocation movement under the driving of drive unit (2) on base plate, and die cavity is carried out to feeding; Base plate side is provided with position induction device (25), and charging basket position is responded to, and limits reciprocating shift length; Charging basket is provided with feed pipe (6) and discharge nozzle (7), is charging basket feed; Drive motors (8) drives the stirring shaft (14) of charging basket inside center, rotates, and stirs material; The outside one end of charging basket connecting drive device, the other end connects push pedal (26), and push pedal pushes the finished product suppressing and goes out lathe.
The beneficial effects of the utility model: realize the front and back shift reciprocately of charging basket by drive unit, allow charging basket move to die cavity top, because charging basket below is hollow, often make a round trip, charging basket just completes material filling once to die cavity. The position sense of base plate side Should install the shift length of controlling charging basket, allow charging basket accurately and effectively powder be sent in die cavity. Drive motors drives stirring shaft rotation, can be even the powder stirring in charging basket, and do not allow the powder adhesion of condensing, and help smooth blanking. The push pedal of charging basket outside, pushes out lathe automatically by the finished product suppressing, and enters finished product district.
Described automatic stirring pay-off, the syndeton of charging basket and drive unit is: drive unit (2) is fixed on base plate, and the piston rod (17) that driven by drive unit is connected with nipple (18) by screw thread pair; Nipple one end is screw thread, and the other end is loop configuration; The outside one end welding hinge of charging basket (16); Hinge is connected with nipple by latch (19).
Above-mentioned drive unit is oil cylinder.
The beneficial effect of this structure: when drive unit promotes charging basket by piston rod, movable hinge means can make piston rod flexible more freely, is not easy to occur stuck phenomenon.
Described automatic stirring pay-off, the syndeton between drive motors and stirring shaft is: transmission case body (1) top mounted motor fishplate bar (9); Drive motors (8) is installed on fishplate bar, motor mandrel's main synchronous pulley (10) that is connected, main synchronous pulley engagement synchronous belt with trapezoid teeth (12), synchronous belt with trapezoid teeth engages large synchronous pulley (11); Power transmission shaft (13) passes between the rolling bearing (20) of transmission case body centre bore, large synchronous pulley is connected, the be connected stirring shaft (14) at charging basket center of power transmission shaft lower end, stirring shaft middle part is welded with scraping blade, and a stirring jaw (15) is equipped with in lower end. Power transmission shaft and transmission case body centre bore junction are provided with sealing ring (27).
Above-mentioned drive motors is servomotor.
The beneficial effect of this structure: drive motors can be brought into play larger moment of torsion and drive stirring shaft to do axle center rotation, the scraping blade on stirring shaft is even the powder stirring in charging basket, do not allow the powder adhesion of condensing, and helps smooth blanking. The stirring jaw of stirring shaft bottom can, in the time of blanking, effectively strike off powder, does not allow powder occur rugged phenomenon.
Described automatic stirring pay-off, charging basket below is hollow, and charging basket lower edge place is provided with groove, and wear-resistant bumper ring (21) is housed in groove, between bumper ring and groove, be also provided with Compress Spring (22), charging basket and base plate are fitted tightly.
The beneficial effect of this structure: the Compress Spring between wear-resistant bumper ring and charging basket, can make bumper ring and base plate fit tightly, effectively alleviate the wearing and tearing in moving back and forth of charging basket and base plate. Strengthen sealing, reduce the leakage of powder.
Described automatic stirring pay-off, is blowed the powder in storage bin into feed pipe (6) by external air source, and feed pipe (6) and discharge nozzle (7) form negative pressure in airtight charging basket.
The beneficial effect of this structure: complete fill process by the switch of controlling purge valve, form negative pressure between feed pipe and discharge nozzle, purge valve is often opened an every charging of feed pipe once, and unnecessary powder is just discharged automatically from discharge nozzle. Can not cause the interior powder of charging basket too much, or the too high phenomenon of air pressure.
Described automatic stirring pay-off, the parallel axle center hole through two ends guide supporting seats (23) of two guide rails (3); Be respectively equipped with two hard stopping means (24) at guide supporting seat near one end of mold component.
The beneficial effect of this structure: hard stopping means can effectively stop automatic stirring material filling device malfunctioning at induction installation, in the situation of stroke, lathe is caused damage.
Described automatic stirring pay-off, base plate has a circular port away from one end of drive unit, in circular port, be provided with mold component sleeve mold (102), sleeve mold is connected with positioning screw mother set (105) with screw thread pair, and setscrew nut is applied mechanically screw and is fixed on base plate; Cover die (103) in the middle of being provided with in sleeve mold, also has mandrel mould (104) in middle cover die, sleeve mold and mandrel mould, between middle cover die, form hollow hold powder die cavity (100).
The beneficial effect of this structure: mold component can be changed according to the actual size of product demand. Mold component is driven by drive unit. Can automatic ejection finished product after compacting finishes.
Brief description of the drawings
Fig. 1 is the stereogram of automatic stirring pay-off.
Fig. 2 is automatic stirring pay-off, prolongs the cutaway view that base plate center line is analysed and observe.
Fig. 3 is the side view that automatic stirring pay-off removes base plate and mould part.
Fig. 4 is that automatic stirring pay-off removes base plate and mould part, the bottom view of seeing from bottom to top.
Transmission case body 1, drive unit 2, guide rail 3, charging basket 4, bearing support block 5, feed pipe 6, discharge nozzle 7, drive motors 8, motor fishplate bar 9, main synchronous pulley 10, large synchronous pulley 11, synchronous belt with trapezoid teeth 12, power transmission shaft 13, stirring shaft 14, stir jaw 15, welding hinge 16, piston rod 17, nipple 18, latch 19, rolling bearing 20, bumper ring 21, Compress Spring 22, guide supporting seat 23, hard stopping means 24, position induction device 25, push pedal 26, sealing ring 27, contiguous block 28,
Die cavity 100, base plate 101, sleeve mold 102, middle cover die 103, mandrel mould 104, positioning screw mother set 105.
Detailed description of the invention
Automatic stirring pay-off is as shown in the figure equipped with support on base plate (101), and drive unit (2) is rack-mount, is fixed on base plate by support; There is piston rod (17) drive unit inside, and piston rod end is threaded connection nipple (18); The outside one end welding hinge of charging basket (4) (16); Welding hinge is connected with jump ring and fixes with nipple by latch (18); Charging basket, under the drive of drive unit piston rod, does horizontal reciprocating movement on base plate, and die cavity (100) is carried out to feeding; The outside other end welding of charging basket welding block, is equipped with push pedal (26) and fixes with screw on welding block.
Transmission case body (1) is installed in charging basket top, fixes with bolt, and contiguous block (28) is equipped with in transmission case body both sides; Transmission case body top mounted motor fishplate bar (9); Motor fishplate bar front side and rear side exposed locations, hide with guard shield; Servomotor (8) is installed on motor fishplate bar, and the motor core main synchronous pulley (10) that is connected, fixes with positioning sleeve, and motor mandrel drives main synchronous pulley to do axis and rotates; Main synchronous pulley engagement synchronous belt with trapezoid teeth (12), the engagement of the synchronous belt with trapezoid teeth other end Large synchronous pulley (11), drives large synchronous pulley to prolong axis and rotates; The centre bore of power transmission shaft (13) from transmission case body passes, and large synchronous pulley is connected; Power transmission shaft and transmission case body centre bore junction are provided with sealing ring (27), are also provided with rolling bearing (20) in transmission case body centre bore groove, and rolling bearing top is fixed with gland and setscrew nut; Power transmission shaft passes from rolling bearing hole, and through gland axle center hole, is connected with the screw thread pair on setscrew nut by the screw thread pair on axle; The power transmission shaft stirring shaft (14) that is connected bottom, stirring shaft lower end is connected one and stirs jaw (15), and power transmission shaft drives stirring shaft and stirs hairpin head axial-rotation, stirs the powder in charging basket; Charging basket below is hollow, facilitates blanking, and charging basket lower edge place is provided with groove, and wear-resistant bumper ring (21) is housed in groove, is also provided with Compress Spring (22) between bumper ring and groove, and bumper ring and base plate are fitted tightly; On charging basket wall, have two holes, be respectively feed pipe (6) and discharge nozzle (7).
Base plate rear and front end is respectively equipped with 4 guide supporting seats (23) and is fixed on base plate with screw; The parallel axle center hole through two ends guide supporting seat of two guide rails (3), is fixed on supporting seat with stop screw; On two guide rails, be also installed with respectively 2 bearing support blocks (5); The contiguous block (28) of bearing support block and transmission case body both sides is connected by screw fixing, supports whole transmission case body and charging basket front and back on guide rail and slides; Be respectively equipped with two hard stopping means (24) at the front end near mold component one side rails supporting seat, hard limit device is made up of hard limiting bracket and two long bolts, hard limiting bracket is fixed on base plate with screw, and long bolt is connected with support with thread forms, and the convenient length that regulates.
The induction support of one strip is housed on the contiguous block of transmission case body one side, and induction support is near drive unit oil cylinder one side; On base plate, near induction support one side, one aluminium type frid is housed, before and after aluminium type frid, be equipped with 4 can adjusting position inductive switch (25).
Base plate is opened a circular port away from the place of drive unit oil cylinder, is provided with sleeve mold (102) in circular port, and sleeve mold is connected with positioning screw mother set (105) with screw thread, and setscrew nut cover is fixed by bolts on base plate; In sleeve mold, there is middle cover die (103), in middle cover die, also have mandrel mould (104); Sleeve mold and mandrel mould, form and hold the die cavity (100) of expecting thing between middle cover die.
When the work of this device, powder is blown into charging basket from charging aperture by purge valve, is full of whole charging basket, and unnecessary material thing is discharged from discharge nozzle. After charging completes, air valve stops blowing material. Charging basket advances to die cavity position and stops under the driving of drive unit oil cylinder. The finished product stock completing last time is released in push pedal simultaneously. Drive motors drives the stirring shaft in charging basket and stirs jaw and starts rotation, stirs blanking action. After to die cavity, blanking completes, motor stops operating, and drives oil cylinder to drive charging basket to return to original position again.
This device collection stirs, feeding, and material filling, feeding full-automatic integral, production efficiency are high, safe and reliable.