CN203170961U - Hard alloy automatic compression forming mold - Google Patents
Hard alloy automatic compression forming mold Download PDFInfo
- Publication number
- CN203170961U CN203170961U CN2013201540489U CN201320154048U CN203170961U CN 203170961 U CN203170961 U CN 203170961U CN 2013201540489 U CN2013201540489 U CN 2013201540489U CN 201320154048 U CN201320154048 U CN 201320154048U CN 203170961 U CN203170961 U CN 203170961U
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- outwash
- punch
- dash
- last
- core bar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
- B30B15/022—Moulds for compacting material in powder, granular of pasta form
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- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The utility model provides a hard alloy automatic compression forming mold. The forming mold comprises an upper punch, a lower punch, a female mold and a mandrel; the upper punch is a column-cone composite body and composed of an upper inner punch and an upper outer punch, and the upper outer punch is sleeved on the exterior of the upper inner punch and is arranged on the upper part of the inner wall of the female mold; the lower punch is shaped like a straight tube and composed of a lower inner punch and a lower outer punch; the lower outer punch is sleeved on the exterior of the lower inner punch and is arranged on the lower part of the inner wall of the female mold; and a mold cavity is formed among the upper outer punch, the upper inner punch, the female mold, the lower outer punch and the lower inner punch of the forming mold. The mandrel is arranged in the core hole of the lower inner punch in a penetrating manner, and a spring is arranged at the lower end of the mandrel. With the adoption of the forming mold, hard alloy products in complicated shapes can be produced through the forming methods of loading, the compression of the upper punch, the preloading of the lower punch and demolding, the production efficiency is high, and the product quality is stable.
Description
Technical field
The utility model relates to a kind of mould of powder metallurgy product, is specifically related to a kind of automatic press-moulding die of hart metal product.
Background technology
When being compressed on above-below direction with powder metallurgy forming technology and having the product of two step rings to outer lug (cross section is annular), the upper punch of being formed by last Nei Chong and last outwash of employing, by Nei Chong down, the following mould of forming towards, former and core bar formed of outwash down.Nei Chong, the working face of going up outwash, heelpiece, Xia Chong, sleeve and core bar constitute shaping mold cavity on it, powder is packed in the die cavity, press applies press power from top, make the mutual displacement of outwash and sleeve and heelpiece, powder in the shaping mold cavity is subjected to from top toward the pressing pressure of bottom transmission, this dashes at present and can produce a displacement that makes progress by relative heelpiece, makes down the bottom step ring of the portion of rushing to be subjected to pressing pressure, makes the step ring density of bottom inferior.Because the space that last Nei Chong and last outwash form is constant all the time, so it is less to enter the cemented carbide powder in the space that Nei Chong and last outwash form, just in pressing process between powder mutual extrusion cause a small part to enter the space that Nei Chong and last outwash form, so other position of the relative stampings of density of stampings upper end step ring is far short of what is expected.Because step ring density and the middle part annulus density of upper surface differ greatly, the elastic after effect difference behind the stampings sintering is just big, the as easy as rolling off a log formation crackle in step place of topping bar and encircling at stampings.
At the problems referred to above, Chinese patent " a kind of mould and automatic moulding press and forming method " (number of patent application: the 2012103746984) cavity size that forms by Nei Chong and last outwash on the change mould, make that Nei Chong and last outwash can do relative displacement on the mould, change the cavity volume of topping bar, the top bar density at position of stampings is recently regulated in the compression that namely improves powder compaction process.Nei Chong can do relative displacement with following outwash under the mould, changes the cavity volume of getting out of a predicament or an embarrassing situation.Nei Chong on the mould, go up the cavity of topping bar that outwash, core bar constitute die cavity, constitute the ring cavity of die cavity between former and the core bar, Nei Chong under the mould, the cavity of getting out of a predicament or an embarrassing situation of outwash and core bar formation die cavity down.By the relative displacement of Nei Chong on the mould and last outwash, the density that product lower step position is regulated in the space that Nei Chong and following outwash form under the change mould.In the time of can making the middle part for annular solid and have the hart metal product moulding of two step rings up and down, the density at top and the bottom and middle part is even.This mould is used for the automatic moulding press, can realizes the mechanization moulding to complex product, regulate each position density of stampings, solved because density unevenness causes stampings crackle and the lageniform problem of endoporus, improved production efficiency and product quality.
But owing to the last Nei Chong of above-mentioned mould, following interior dashing are straight-tube shape, have certain limitation, can only produce endoporus is straight hole, the product in no taper hole or Zhi Tai hole.When need production has the product in taper hole or Zhi Tai hole; because the ejection phase core bar moves down with former; the stampings endoporus conical surface does not have mould protection, and the elastic after effect of the powder particle of pressed compact own concentrates on the endoporus conical surface and discharges, and causes the taper hole face crackle to occur and can't produce.
Summary of the invention
The purpose of this utility model is to provide a kind of carbide alloy mould of compacting automatically.This mould can be produced the hart metal product of the complicated shape of being made up of taper hole or straight hole adapter ring body, the ring of topping bar, the ring of getting out of a predicament or an embarrassing situation, endoporus.
The technical solution of the utility model is as follows:
The automatic press-moulding die of a kind of carbide alloy comprises upper punch, Xia Chong, former and core bar; Upper punch is made of last outwash and last interior dashing; Outside dashing in last outwash is enclosed within, place the former upper inside wall; Dash by following outwash down and dash down and constitute; Outside dashing in following outwash is enclosed within down, place former inwall bottom; In the core hole that dashes in core bar is placed through down; The top that dashes on the described mould is column, and the middle part is taper, and the bottom is column, forms post awl complex upper punch; The lower end of described core bar is provided with spring, and the upper end of spring links to each other with the lower end of core bar, and the lower end of spring is fixed on the core bar seat.
The last outwash of described mould, dash in going up, former, down outwash, form die cavity between dashing in down.
The described outwash, upward interior towards the conical cavity of topping bar that constitutes die cavity that goes up; Constitute the ring cavity of die cavity between described former, last outwash, following outwash and the core bar; Described outer Nei Chong and the last interior cavity of getting out of a predicament or an embarrassing situation that constitutes die cavity that dashes of sweeping away down.
Principle of the present utility model is as follows:
In the compression moulding process, last outwash, following outer being punched under the reaction of compressed material, last outwash is dashed in going up and is up moved, following outwash interior dashing relatively down moves down, by last outwash and last in dash relatively move, in the change outwash and last in dash between the compression ratio of material, by outwash down with down in dash relatively move, change outwash down with time in dash between the compression ratio of material, thereby make stampings top bar cone-shaped ring, middle annulus and the annulus consistent in density of getting out of a predicament or an embarrassing situation.In knockout course, after former moved down, upper punch was still being pressed stampings, made stampings nonelastic aftereffect in knockout course concentrate release place, stampings taper hole flawless.
In sum, owing to adopted technique scheme, the utlity model has following advantage:
1, by upper punch being designed to post awl complex, in the lower end of core bar spring is set, makes core bar scalable.Under the cooperation of original mould miscellaneous part, adopt automatic press-moulding die of the present utility model, can suppress each by the hart metal product of being formed by taper hole and straight hole by adapter ring body, the ring of topping bar, the ring of getting out of a predicament or an embarrassing situation, endoporus of two end faces.
2, because in knockout course, to dash down, former, core bar move down, upper punch is being pressed stampings all the time, makes stampings nonelastic aftereffect in knockout course concentrate release place, compacting capo taper hole flawless.Production efficiency, constant product quality have been improved.
Description of drawings
Fig. 1 is automatic compacting tool set structural representation of the present utility model.
Fig. 2 is mo(u)ldenpress and mould connection diagram.
Fig. 3 is automatic drawing method schematic diagram of the present utility model.
Fig. 4 is the product structure schematic diagram that adopts automatic compacting tool set compacting of the present utility model.
Among the figure: 1, go up outwash; 2, dash in going up; 3, former; 4, following outwash; 5, dash in down; 6, core bar; 7, spring; 8, go up compression leg; 9, upper junction plate; 10, upward interior towards piston; 11, upper punch piston; 12, going up outwash floats apart from nut; 13, upper guide post, 14, concave template; 15, following guide pillar; 16, following outwash demoulding location means; 17, float plate; 18, descend outwash pressing position device; 19, interior towards base down; 20, base; 21, be lower connecting plate; 22, concave template resetting means; 23, core bar seat; 24, the ring of topping bar; 25, annular solid; 26, the ring of getting out of a predicament or an embarrassing situation; 27, taper hole; 28, straight hole
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described:
As shown in Figure 1, automatic press-moulding die of the present utility model is made up of upper punch, Xia Chong, former and core bar.
Wherein: upper punch by last outwash 1 and last in dash 2 and constitute.Top towards 2 in going up is column, and the middle part is taper, and the bottom is column, forms post awl complex.Dash outside 2 in last outwash 1 is enclosed within, place former 3 upper inside wall.Dashing down is straight-tube shape, constitutes towards 5 by following outwash 4 with down.Dash outside 5 in following outwash 4 is enclosed within down, place former 3 inwall bottoms.Dash in 5 the core hole in core bar 6 is placed through down, the lower end of core bar 6 is provided with spring 7, and the upper end of spring 7 links to each other with the lower end of core bar 6, and the lower end of spring 7 is fixed on the core bar seat 23.Last outwash 1, dash 2 in going up, former 3, down outwash 4, form die cavity between dashing 5 in down.Wherein go up outwash 1, go up the interior conical cavity of topping bar that dashes 2 formation die cavitys; Constitute the ring cavity of die cavity between last outwash 1, former 3, following outwash 4 and the core bar 6; Following outwash 4, dash in down 5 with last in dash 2 cavitys of getting out of a predicament or an embarrassing situation that constitute die cavitys.
As shown in Figure 2, (number of patent application: the mo(u)ldenpress 2012103746984) is connected with mould of the present utility model, and mould is assemblied in the mo(u)ldenpress with Chinese patent " a kind of mould and automatic moulding press and forming method ".Core bar 6 is connected on the core bar seat 23, dash in down 5 be enclosed within on the core bar 6 and be connected down on base 19, dash 5 in requiring down and can rotate and play up and down, but can not be too loose.The position of outwash under mo(u)ldenpress is installed dashes on 5 in outwash 4 is enclosed within down down and is connected on the float plate 17 of press, requires it to rotate and play up and down, but can not be too loose.In the position that mo(u)ldenpress is installed former, be enclosed within down former 3 on the outwash 4 and connection is fastened on the concave template 14 of press.In the compression moulding position of mo(u)ldenpress, dash 5 in the measurement down to former 3 upper surface distances, require than the big 5～8mm of stampings height, can be by lifting concave template 14, till suitable if improper.The position that in mo(u)ldenpress is installed, dashes, dash in will going up 2 be connected on piston 10, require it to rotate and play up and down, but can not be too loose.Install the position of outwash at mo(u)ldenpress, to go up outwash 1 and be enclosed within interior dashing on 2, upper junction plate 9 is descended, touch outwash piston 11 in the upper surface of last outwash 1, and after its periphery enters the inwall 6～10mm of former 3, will go up outwash 1 and be fastened on the outwash piston 11.Manually make the upper junction plate 9 of mo(u)ldenpress rise to position apart from the upper surface 15mm of former 3, in pressing process, the degree of depth that last outwash 1 enters former 3 is 6～8mm.
As shown in Figure 3, adopt the automatic briquetting process of automatic press-moulding die of the present utility model, concrete steps are as follows:
The step 1 charging
Equipment state is in the A position: will expect that boots cover on the mould, and open self-feeding.The upper end of core bar 6 flushes with the upper surface of former 3, with material be filled in by dash down, former 3, core bar 6 constitute in the cavity; The step 2 upper punch presses down
The A-B stage: other position of mould is motionless, and under the pressure effect that last compression leg 8 transmits, upper punch moves up into former 3 13 times along upper guide post, and material enters by last outwash 1 and the last interior conical cavity of topping bar that constitutes between 2 that dashes; The upper surface of core bar 6 contacts with last interior lower surface towards 2, and under 2 effect, the spring 7 of core bar 6 lower ends is compressed in last, and core bar 6 moves down with dashing 2 in last, and upward interior going up relatively on the outwash 1 towards 2 moved;
The step 3 upper punch continues to press down
The B-C stage: be connected with base 20 towards base 19 down, dash down 5 be connected down interior motionless on the base 19, former 3, core bar 6 and upper punch move down along following guide pillar 15 together, material is subjected to the compressed moulding of press power in this process, following outwash 4 moves down under the material reaction, till the upper surface of the following outwash pressing position of the voussoir contact device 18 in descending outwash demoulding location means 16; In the process that upper punch moves down, last outwash 1 is up mobile under the material reaction, up to last outwash 1 and last in dash the density of material and the material at other position between 2 close till, the material in the die cavity be pressed at above-below direction have the ring 24 of topping bar, the ring 26 of getting out of a predicament or an embarrassing situation, middle be the carbide alloy stampings of taper hole 27 and straight hole 28 formations for annular solid 25, endoporus;
The prestrain of step 4 upper punch
The C-D stage: former 3 continues to move down, under the effect of spring 7, core bar 6 contacts with last interior lower surface towards 2 all the time, following outwash 4 maintains static towards 5 with interior down, on be punched under the prestrain effect and push down product, last outwash 1 moves down under the press cylinder action, dashes 2 in going up and moves down under the press cylinder action.When outwash 4 upper surfaces flushed with former 3 instantly, following outwash 4 moved down with former 3, core bar 6, and the upper surface towards 5 in down flushes with former 3;
The step 5 demoulding
Equipment state is in the D position: when last outwash 1 is left the upper surface of former 3, this moment, preload force all acted on the stampings, dash 2 in going up and still pressing stampings, dashing 2 in going up simultaneously continues to move down, stampings are ejected downwards in last outwash 1, when the stampings lower surface flushes with former 3, removal upper punch preload force, dash 2 in going up and rise to the extreme higher position, last outwash 1 moves down, and outwash 1 is flushed with last interior lower surface towards 2, is returned to initial position, stampings are taken out in the stampings demoulding.
The adjustment method of automatic compression moulding:
1, crawl compacting, the upper surface of outwash pressing position device 18 under whether the voussoir under observing in pressing process in the outwash demoulding location means 16 contacts, requirement can not contact too tight, prevent from crashing because of the overload press, in the compression moulding position, adjust outwash pressing position device 18 down, make it touch down voussoir in the outwash demoulding location means 16, avoid down outwash 4 unsteady in the pressing position.
2, detect stampings substance, size.
3, the stampings substance does not satisfy technological requirement and then adjusts pressing stroke, and pressing stroke refers to the distance that former 3 and upper punch move down synchronously.
4, the stampings height dimension does not satisfy then lifting upper punch of technological requirement.
5, stampings top bar ring highly do not satisfy technological requirement then adjust outwash 1 with last in dash 2 drop, adjust simultaneously go up outwash 1 with last in towards 2 drops charging position (concave template 14 rises to the extreme higher position of concave template resetting means 22).
6, stampings get out of a predicament or an embarrassing situation ring highly do not satisfy technological requirement then adjust down outwash 4 with down in dash 5 drops in the compression moulding position, adjust simultaneously down outwash 4 with down in towards 5 drops charging position (concave template 14 rises to the extreme higher position of concave template resetting means 22).
7, repeat above step, till substance, size satisfy technological requirement.
8, isostatic cool pressing is handled stampings, measure the each several part size, require the each several part size to satisfy technological requirement, as the ring size of topping bar is improper, and then outwash is unsteady adjusts outwash 1 and last interior towards 2 drops at charging position apart from nut 12 by regulating, as outwash 4 and following interior towards 5 drops at charging position under the improper then adjustment of the ring size of getting out of a predicament or an embarrassing situation.Till the stampings each several part size that isostatic cool pressing is handled satisfies technological requirement.
Adopt the product of automatic compacting tool set compacting of the present utility model as shown in Figure 4, product has the ring 24 of topping bar at above-below direction, the ring 26 of getting out of a predicament or an embarrassing situation, intermediate cross-section are the annular solid 25 of annular, and taper hole 27, straight hole 28 are arranged.The taper hole face flawless of product, steady quality.
The above only is preferred embodiments of the present utility model, and disclosed in this manual all features, all methods or step are not limited to the above-mentioned specific embodiment.All any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. the automatic press-moulding die of carbide alloy comprises upper punch, Xia Chong, former and core bar; Upper punch is made of last outwash (1) and last interior dash (2); Dash in last outwash (1) is enclosed within outer (2), place former (3) upper inside wall; Dash down by outwash (4) and following interior dash (5) constitute down; Dash outside (5) in following outwash (4) is enclosed within down, place former (3) inwall bottom; Dash in the core hole of (5) in core bar (6) is placed through down, it is characterized in that: the upward interior top that dashes (4) of described mould is column, and the middle part is taper, and the bottom is column, forms post awl complex upper punch; The lower end of described core bar (6) is provided with spring (7), and the upper end of spring (7) links to each other with the lower end of core bar (6), and the lower end of spring (7) is fixed on the core bar seat (23).
2. the automatic press-moulding die of a kind of carbide alloy according to claim 1 is characterized in that: the last outwash (1) of described mould, dash in going up (2), former (3), down outwash (4), dash between (5) in down and form die cavity.
3. the automatic press-moulding die of a kind of carbide alloy according to claim 2 is characterized in that: describedly go up outwash (1), dash the conical cavity of topping bar that (2) constitute die cavity in going up; Constitute the ring cavity of die cavity between described former (3), last outwash (1), following outwash (4) and the core bar (6); Outwash (4) is interior towards (5) and the last interior cavity of getting out of a predicament or an embarrassing situation that dashes (2) formation die cavity down under described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201540489U CN203170961U (en) | 2013-03-31 | 2013-03-31 | Hard alloy automatic compression forming mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201540489U CN203170961U (en) | 2013-03-31 | 2013-03-31 | Hard alloy automatic compression forming mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203170961U true CN203170961U (en) | 2013-09-04 |
Family
ID=49067715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201540489U Withdrawn - After Issue CN203170961U (en) | 2013-03-31 | 2013-03-31 | Hard alloy automatic compression forming mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203170961U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070163A (en) * | 2013-03-31 | 2014-10-01 | 自贡硬质合金有限责任公司 | Automatic compression moulding die and moulding method for hard alloy |
| CN113134609A (en) * | 2021-04-02 | 2021-07-20 | 常州市知宇粉末冶金有限公司 | Oil-retaining bearing shaping die |
-
2013
- 2013-03-31 CN CN2013201540489U patent/CN203170961U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070163A (en) * | 2013-03-31 | 2014-10-01 | 自贡硬质合金有限责任公司 | Automatic compression moulding die and moulding method for hard alloy |
| CN104070163B (en) * | 2013-03-31 | 2016-01-27 | 自贡硬质合金有限责任公司 | A kind of automatic press-moulding die of carbide alloy and forming method |
| CN113134609A (en) * | 2021-04-02 | 2021-07-20 | 常州市知宇粉末冶金有限公司 | Oil-retaining bearing shaping die |
| CN113134609B (en) * | 2021-04-02 | 2024-01-09 | 常州市知宇粉末冶金有限公司 | Shaping die for oil-retaining bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130904 Effective date of abandoning: 20160127 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |