CN201423767Y

CN201423767Y - powder forming machine

Info

Publication number: CN201423767Y
Application number: CN 200920044122
Authority: CN
Inventors: 顾明磊; 张惠生; 张兆亮
Original assignee: Yangzhou Forging Machine Tool Co Ltd
Current assignee: Yangzhou Forging Machine Tool Co Ltd
Priority date: 2009-06-19
Filing date: 2009-06-19
Publication date: 2010-03-17
Anticipated expiration: 2019-06-19

Abstract

The utility model relates to a powder forming machine, which belongs to the rare-filling mechanism of the power forming machine in the metallurgy industry. After powder is filled, an additional clearance is arranged, so that an upper mold and the powder are contacted with each other in the mold cavity, thereby preventing the powder from over-spilling. The powder forming machine comprises a power source, a main shaft, an eccentric wheel arranged on one end of the main shaft, an upper mold device, a middle mold device, a lower mold device, a core rod, a lower slide column connected with the middle mold device, an elastic support device, a mold stripping device, a lever and also a rare-filling device, the fork on the other side of the lever extends to correspond to the rare-filling device, the rare-filling device comprises a pressure block and a pressure block driving mechanism, wherein the pressure block can move upwards and downwards and is arranged above the on the other side of the lever, and the pressure block driving mechanism drives the pressure block to exert force on the extended section of the lever to maintain the volume of the filling cavity formed by the lower mold and the middle mold unchanged during powder filling. After the powder is filled, the pressure block moves again to drive the extended section of the fork and thus the lever to move, then drive the lower slide column and the middle mold device to operate, and thereby the volume of the filling cavity is increased by 3 to 100 percent.

Description

Powder former

Technical field

The utility model relates to Powder metallurgic forming machines, relates in particular to few filling body of Powder metallurgic forming machines.

Background technology

Along with the appearance of powder metallurgy forming technology, the processing of some complex structure parts has been produced great change.Greatly reduce cost, the cycle of processing and manufacturing, improved the efficient of processing.Powder metallurgy forming technology is realized by Powder metallurgic forming machines, shown in Fig. 3,4, its process principle is: at first, and with middle mould 33 and plug 32 up H strokes, form the filling chamber 35 that height is H at both and 31 of counterdies, then in this filling chamber 35, insert powder; Then, patrix 34 is descending, with the powder compression moulding in the filling chamber 35.According to designing requirement, the overall size of forming parts and powder amount have confidential relation, if powder measures existing error, can cause the precision of manufactured goods (such as the powder metallurgical gear of automobile etc.) not meet designing requirement.We are as can be seen from Fig. 4, when patrix 34 is descending, following transverse plane at first contact with middle die orifice along contour powder, may make the powder in the filling chamber 35 that is placed on nominal volume excessive, thereby cause the powder amount to reduce, and then make manufactured goods not meet designing requirement.Someone proposes to increase the nominal volume of filling chamber 35, increases the powder injected volume and solves this problem.But the excessive amount of powder is to be difficult to control, and the operating rate of excessive amount and patrix, the diameter of filling the chamber, die clearance etc. are in close relations, in addition, adopt this solution can cause the wearing and tearing of mould.

The utility model content

The utility model is at above problem, and providing a kind of increases a space again after filling out powder under the specified abundant volume, make patrix contact in die cavity with powder, thereby avoids the excessive powder former of powder.

The technical solution of the utility model is: comprise power source, main shaft, be located at the eccentric wheel, upper mould device, middle die device of main shaft one end, die device, plug, the following traveller, resilient supporting unit, stripper apparatus and the lever that link to each other with middle die device down; Described resilient supporting unit links to each other with following traveller, makes that traveller has mould operation in the driving down, down, form filling chamber between the middle mould; Described lever is located on the fuselage by jointed shaft is flat, and lever is provided with four forks; Lever middle part two forks are movably connected with following traveller, move up and down in order to drive down traveller; Described lever links to each other with eccentric wheel by pressure rod towards the fork of spindle eccentric wheel one side, in order to accept the power that effective travel is transmitted on the eccentric wheel; The opposite side fork of described lever connects stripper apparatus; It also comprises few filling device; The opposite side fork that described lever connects stripper apparatus prolongs, in order to corresponding with described few filling device; Described few filling device comprises the pressure block and the pressure block drive unit that can move up and down, described pressure block is arranged on the top of described opposite side fork extension, described pressure block driving mechanism can order about pressure block produce on the lever extension keep down, filling chamber between the middle mould filling powder during the active force of constancy of volume, after filling powder, the driving pressure piece motion again of described pressure block driving mechanism, traveller, the motion of middle die device made filling chamber volume increase 3-100% under pressure block and then driving fork extension, drive lever rotated, drive.

Described few filling device comprise make the filling chamber volume charging quantity governor motion consistent with designing requirement with make the increase of filling chamber volume become crack mechanism; Described charging quantity governor motion comprises main motor, drive gear mechanism, power transmission shaft, screw rod, feather key, gear wheel gland, transition gear gland, transition gear, transition gear case, gear wheel, canine tooth roller box, filling cylinder gland, filling cylinder, piston and filling cylinder bearing; Main motor is fixed on the fuselage, and power transmission shaft is movably connected on the fuselage perpendicular to horizontal plane, and main motor links to each other by drive gear mechanism with power transmission shaft; Power transmission shaft top is fixedly connected with transition gear, and the transition gear case that transition gear gland, a side are provided with opening is located at outside the transition gear, and is fixedly connected on the fuselage; Gear wheel is by being threaded in the screw rod middle part, and by the opening and the transition gear engagement of transition gear case, when gear wheel rotated, screw rod moved up and down; Gear wheel gland, canine tooth roller box are located at outside the gear wheel; The filling cylinder is located at the gear wheel upper box part, is provided with piston in the filling cylinder, and the piston upper and lower end stretches out filling cylinder gland respectively, fixedlys connected with screw rod in the piston lower end; The filling cylinder is fixedlyed connected with fuselage by filling cylinder bearing; Described canine tooth roller box is fixedlyed connected with the piston lower end; Described one-tenth crack mechanism comprises the cylinder seat of honour, cylinder body, fixed head, middle base, piston rod, upper piston, lower piston, air cylinder base and hold-down support; Described middle base is divided into upper and lower two working chambers with cylinder body, is respectively equipped with the last accent one of working chamber, following accent one on the cylinder seat of honour and the middle base, is respectively equipped with down the last accent two of working chamber, following accent two on middle base and the air cylinder base; Hold-down support is fixedly connected on cylinder body on the fuselage; Piston rod is fixedlyed connected with lower piston with the upper piston in the upper and lower working chamber, and piston-rod lower end stretches out air cylinder base and hold-down support, and correspondence is arranged on the end face of piston upper end in the described detent mechanism.

Link to each other by press rods between the end face of piston upper end in the piston-rod lower end of described one-tenth crack mechanism and the described detent mechanism.

The utility model is on the basis of existing make-up machine, increased few filling device, as Fig. 3-5, after mould arrived the amount of specified position in powder packed during it can make, a up again segment distance h produces a space 36, thus make the powder upper edge be lower than in the mouth of mould along (this position is 0 of few filling device in the utility model, be H+h among Fig. 5, volume is orientated H among Fig. 4 as).Like this, before the descending compacting powder of patrix, have one section to be to move in the enclosed cavity of die cavity, owing to contact powder in die cavity, therefrom the upper edge of mould is excessive so thoroughly avoided powder.Needing certain active force between 0 and specified comes the balance resilient supporting unit to act on the power of traveller, middle mould down, this power is formed by the cylinder in few filling device, for reducing the power consumption of this power, on the lever of make-up machine, be provided with extension, prolonged the arm of force; Simultaneously, after specified position filler was finished, the speed of cylinder reverse operation was fast, and it is rapid to make into the crack; At last, cylinder is because no hydraulic fluid leak infiltrates the quality that powder influences product thereby can not produce fluid to powder compacting processing.The utility model has been realized accurate control powder charging quantity at different goods, has overcome conventional filling powder and has splashed and cause product weight, density not to reach the difficult problem of high-accuracy requirement.

Description of drawings

Fig. 1 is a structural representation of the present utility model

1 is drive gear mechanism among the figure, the 2nd, and pressure block, the 3rd, main motor, the 4th, power transmission shaft, the 5th, screw rod, the 6th, feather key, the 7th, gear wheel gland, the 8th, transition gear gland, the 9th, transition gear, the 10th, transition gear case, the 11st, gear wheel, the 12nd, canine tooth roller box, the 13rd, filling cylinder gland, the 14th, filling cylinder, the 15th, piston, the 16th, filling cylinder bearing, the 17th, the cylinder seat of honour, the 18th, cylinder body, the 19th, fixed head, the 20th, middle base, the 21st, piston rod, the 22nd, lower piston, the 23rd, air cylinder base, the 24th, hold-down support, the 25th, press rods, the 26th, knockout pin, the 27th, lever, the 28th, work fulcrum, the 29th, extension, the 30th, following traveller;

Fig. 2 is the structural representation of lever in the utility model

Fig. 3 is the operation principle schematic diagram one that the utility model is realized

31 is counterdies among the figure, the 32nd, and plug, the 33rd, middle mould;

Fig. 4 is the operation principle schematic diagram two that the utility model is realized

34 is patrixes among the figure, the 35th, and filling chamber;

Fig. 5 is the operation principle schematic diagram three that the utility model is realized

36 is spaces among the figure.

The specific embodiment

The utility model comprises power source, main shaft, is located at the eccentric wheel, upper mould device, middle die device of main shaft one end, die device, plug, the following traveller 30 that links to each other with middle die device, resilient supporting unit, stripper apparatus 26 and lever 27 down as shown in Figure 1, 2; Described resilient supporting unit links to each other with following traveller 30, makes that traveller 30 has mould operation in the driving down, down, form filling chamber between the middle mould; Described lever 27 is located on the fuselage by jointed shaft is flat, and lever 27 is provided with four forks; Lever 27 middle parts two forks are movably connected with following traveller 30, move up and down in order to drive down traveller 30; Described lever 27 links to each other with eccentric wheel by pressure rod towards the fork of spindle eccentric wheel one side, in order to accept the power that effective travel is transmitted on the eccentric wheel; The opposite side fork of described lever 27 connects stripper apparatus 26 by roller 1; It also comprises few filling device; The opposite side fork that described lever 27 connects stripper apparatus 26 prolongs, in order to corresponding with described few filling device; Described few filling device comprises the pressure block 2 and the pressure block drive unit that can move up and down, described pressure block 2 is arranged on the top of described opposite side fork extension 29, described pressure block driving mechanism can order about pressure block 2 produce on the lever extension 29 keep down, filling chamber between the middle mould filling powder during the active force of constancy of volume, after filling powder, driving pressure piece 2 motions again of described pressure block driving mechanism, traveller 30, the motion of middle die device made filling chamber volume increase 3-100% under pressure block 2 and then driving fork extension 29, drive lever 27 rotated, drive.

Described few filling device comprise make the filling chamber volume charging quantity governor motion consistent with designing requirement with make the increase of filling chamber volume become crack mechanism; Described charging quantity governor motion comprises main motor 3, drive gear mechanism 1, power transmission shaft 4, screw rod 5, feather key 6, gear wheel gland 7, transition gear gland 8, transition gear 9, transition gear case 10, gear wheel 11, canine tooth roller box 12, filling cylinder gland 13, filling cylinder 14, piston 15 and filling cylinder bearing 16; Main motor 3 is fixed on the fuselage, and power transmission shaft 4 is movably connected on the fuselage perpendicular to horizontal plane, and main motor 3 links to each other by drive gear mechanism 1 with power transmission shaft 4; Power transmission shaft 4 tops are fixedly connected with transition gear 9, and the transition gear case 10 that transition gear gland 8, a side are provided with opening is located at outside the transition gear 9, and is fixedly connected on the fuselage; Gear wheel 11 is by being threaded in screw rod 5 middle parts, and by the opening and transition gear 9 engagements of transition gear case 10, when gear wheel 11 rotated, screw rod 5 moved up and down; Gear wheel gland 7, canine tooth roller box 12 are located at outside the gear wheel 11; Filling cylinder 14 is located at canine tooth roller box 12 tops, is provided with piston 15 in the filling cylinder 14, and the upper and lower end of piston 15 stretches out filling cylinder gland 13 respectively, fixedlys connected with screw rod 5 in piston 15 lower ends; Filling cylinder 14 is fixedlyed connected with fuselage by filling cylinder bearing 16; Described canine tooth roller box 12 is fixedlyed connected with piston 15 lower ends; Described one-tenth crack mechanism comprises the cylinder seat of honour 17, cylinder body 18, fixed head 19, middle base 20, piston rod 21, upper piston, lower piston 22, air cylinder base 23 and hold-down support 24; Described middle base 20 is divided into upper and lower two working chambers with cylinder body 18, be respectively equipped with the last accent one of working chamber, following accent one on the cylinder seat of honour 17 and the middle base 20, be respectively equipped with down the last accent two of working chamber, following accent two on middle base 20 and the air cylinder base 23; Hold-down support 24 is fixedly connected on cylinder body 18 on the fuselage; Piston rod 21 is fixedlyed connected with lower piston 22 with the upper piston in the upper and lower working chamber, and air cylinder base 23 and hold-down support 24 are stretched out in piston rod 21 lower ends, and correspondence is arranged on the end face of piston 15 upper ends in the described detent mechanism.Link to each other by press rods 25 between the end face of piston upper end in described piston-rod lower end and the described detent mechanism.

The utility model operation principle is shown in Fig. 3-5:

Fig. 3 is the schematic diagram of original state die region.

During work, 0 (specified position+space) at first is set, processing request to adapt to.Few filling device is adjusted, and promptly the downward full stroke of cylinder again by main motor 3 drive screws 5, pressure block 2, stops on certain angle corresponding with " specified position H " lever 27.As shown in Figure 4, distance is H between 33 mouthfuls of edges of middle mould and counterdie 31 upper surfaces; At this moment, the resilient supporting unit of make-up machine has opposition by middle mould, following traveller to lever 27.

After rated capacity (H) capacity adds powder, cylinder counter motion (or off-load), under the effect of resilient supporting unit or cylinder reverse drive, the up h of middle mould forms space 36.

Claims

1, powder former comprises power source, main shaft, is located at the eccentric wheel, upper mould device, middle die device of main shaft one end, die device, plug, the following traveller, resilient supporting unit, stripper apparatus and the lever that link to each other with middle die device down;

Described resilient supporting unit links to each other with following traveller, makes that traveller has mould operation in the driving down, down, form filling chamber between the middle mould;

Described lever is located on the fuselage by jointed shaft is flat, and lever is provided with four forks; Lever middle part two forks are movably connected with following traveller, move up and down in order to drive down traveller; Described lever links to each other with eccentric wheel by pressure rod towards the fork of spindle eccentric wheel one side, in order to accept the power that effective travel is transmitted on the eccentric wheel; The opposite side fork of described lever connects stripper apparatus;

It is characterized in that: it also comprises few filling device; The opposite side fork that described lever connects stripper apparatus prolongs, in order to corresponding with described few filling device;

Described few filling device comprises the pressure block and the pressure block drive unit that can move up and down, described pressure block is arranged on the top of described opposite side fork extension, described pressure block driving mechanism can order about pressure block produce on the lever extension keep down, filling chamber between the middle mould filling powder during the active force of constancy of volume, after filling powder, the driving pressure piece motion again of described pressure block driving mechanism, traveller, the motion of middle die device made filling chamber volume increase 3-100% under pressure block and then driving fork extension, drive lever rotated, drive.

2, powder former according to claim 1 is characterized in that, described few filling device comprise make the filling chamber volume charging quantity governor motion consistent with designing requirement with make the increase of filling chamber volume become crack mechanism;

Described charging quantity governor motion comprises main motor, drive gear mechanism, power transmission shaft, screw rod, feather key, gear wheel gland, transition gear gland, transition gear, transition gear case, gear wheel, canine tooth roller box, filling cylinder gland, filling cylinder, piston and filling cylinder bearing; Main motor is fixed on the fuselage, and power transmission shaft is movably connected on the fuselage perpendicular to horizontal plane, and main motor links to each other by drive gear mechanism with power transmission shaft; Power transmission shaft top is fixedly connected with transition gear, and the transition gear case that transition gear gland, a side are provided with opening is located at outside the transition gear, and is fixedly connected on the fuselage; Gear wheel is by being threaded in the screw rod middle part, and by the opening and the transition gear engagement of transition gear case, when gear wheel rotated, screw rod moved up and down; Gear wheel gland, canine tooth roller box are located at outside the gear wheel; The filling cylinder is located at the gear wheel upper box part, is provided with piston in the filling cylinder, and the piston upper and lower end stretches out filling cylinder gland respectively, fixedlys connected with screw rod in the piston lower end; The filling cylinder is fixedlyed connected with fuselage by filling cylinder bearing; Described canine tooth roller box is fixedlyed connected with the piston lower end;

Described one-tenth crack mechanism comprises the cylinder seat of honour, cylinder body, fixed head, middle base, piston rod, upper piston, lower piston, air cylinder base and hold-down support; Described middle base is divided into upper and lower two working chambers with cylinder body, is respectively equipped with the last accent one of working chamber, following accent one on the cylinder seat of honour and the middle base, is respectively equipped with down the last accent two of working chamber, following accent two on middle base and the air cylinder base; Hold-down support is fixedly connected on cylinder body on the fuselage; Piston rod is fixedlyed connected with lower piston with the upper piston in the upper and lower working chamber, and piston-rod lower end stretches out air cylinder base and hold-down support, and correspondence is arranged on the end face of piston upper end in the described detent mechanism.

3, powder former according to claim 2 is characterized in that, links to each other by press rods between the end face of piston upper end in the piston-rod lower end of described one-tenth crack mechanism and the described detent mechanism.