CN1004684B - Powder molding press - Google Patents
Powder molding press Download PDFInfo
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- CN1004684B CN1004684B CN86108609.0A CN86108609A CN1004684B CN 1004684 B CN1004684 B CN 1004684B CN 86108609 A CN86108609 A CN 86108609A CN 1004684 B CN1004684 B CN 1004684B
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- compression
- eject
- cam
- die
- depression bar
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Abstract
The present invention relates to a metal powder molding press. A press rod can accomplish the tasks such as compression, extrusion and floating prevention for a concave mold because the present invention is provided with a compression and extrusion regulation mechanism, and thus, the metal powder molding press has the advantages of simple structure and low manufacture cost; because a stopping-relieving mechanism is not needed, the phenomenon of dash-out doesn't exist at the instant of the extrusion, and the quality of products can be improved. Simultaneously, after enough compression time is ensured, other time is compressed within a minor range; thereby, the production speed is increased.
Description
The present invention relates to a kind of powder shaping press, promptly metal dust etc. is packed in the metal pattern, compressed, eject (demoulding) processing, be compressed into the powder shaping press of regulation shape.
Japan publication 60-162597 has proposed a kind of powder shaping press as depicted in figs. 1 and 2.As can be seen from Figure 1, the pressing mold group of this press comprises: be fixed on the upper punch (108) on the upperpush rod (106); Be fixed in frame, fixed low punch (114) all the time; Be fixed on the die (112) in the work top (111); By work top (111), connecting rod (110), lower pulling plate (109), the core bar (115) of fixedlying connected with die (112).This core bar (115) and die (112) are all by lower pulling plate (109), lower link (117), fixedly connected with base plate (120), thereby can do the oscilaltion campaign with base plate (120), and upper punch (108) is installed on the crankpin (103a) of main shaft (103) by upperpush rod (106) and connecting screw rod etc.The both sides of crankpin (103a) are equipped with compression cam (123) respectively and are ejected cam (124).After the action beginning, along with the rotation of main shaft (103), upper punch (108) descends and embeds in the die (112), and powder in the die is carried out precommpression.Simultaneously, rotation along with compression cam (123), compression is depressed with depression bar (127) and falls, and by being positioned at the roller (148a) of depression bar (127) below, swing arm (148), make fork (145) (see figure 2) to lower swing, again and (146a) by the roller (147a) on the fork (145), with base plate (120) to pressing down, move down with the upper punch (108) that continues to descend thereby make with base plate (120) fixedly connected die (112) and core bar (115) beginning, because low punch (114) maintains static, the powder in the die (112) just is compressed into goods.At this moment, the stop pillar (137) on being hinged on retainer (134), (135) on the base plate (120) and being located at base contacts, and stoping base plate (120) is that die (112) further descends.Then, release and the process of ejecting begin, upper punch (108) gos up to leave die (112), begin by ejecting and eject cam (124) with depression bar (128), depress lower push rod (141) earlier, make retainer (135) and (134) rotate and throw off with stop pillar (137), finish release movement, then by the roller (149a) on fork (145) (see figure 2), make fork (145) further to the bottom, thereby make base plate (120), and die (112) of fixedlying connected and further decline of core bar (115) with base plate (120), fixed low punch (114) just ejects the goods in the die (112) in die (112), finish ejecting action.
Above-mentioned powder shaping press, owing to finish compression respectively and eject action with two depression bars, the stop relieving mechanism must be set, so, not only part is many, complex structure and cost height, and, in the dispose procedure before compression ends and ejects beginning, in order to prevent that die (112) from rising along with the rising of upper punch (108), compression must be by roller (148a) with depression bar (127), (147a) give (120) downforce of base plate preventing the rising of die (112), but discharging at the end, also promptly in moment that retainer (134) and stop pillar (137) are thrown off, because the effect of this downforce, die (112) can be subjected to a unexpected downward impact, and this impact phenomenon can influence the inside and outside quality of stampings in the die, and influence is more obvious when especially producing (compacting) automatically in high-speed and continuous.
Task of the present invention aims to provide a kind of powder press that overcomes above-mentioned various shortcoming, the compression of this press, eject cam respectively by compression, eject governor motion and depression bar and a fork and finish above-mentioned compression, eject and stop die rising task, simple in structure, cost is low, and there is not the stop relieving mechanism, there is not any impact phenomenon, thereby its stampings quality height.
According to powder shaping press of the invention process, its compression, eject (demoulding) mechanism and comprise: be located at the compression cam of crankshaft rear end toward each other and eject cam; Comprise two roller devices that the position is adjustable, and along with two rollers of this roller devices and each self-corresponding compression cam or eject cam and contact respectively and do straight-line compression up and down, eject governor motion; With this compression, eject a depression bar of fixedlying connected in the lower end of governor motion; The lower link of fixedlying connected with core bar with die, and all link with described depression bar and lower link, the swing arm that can freely swing around a fixed pivot.
Effect of the present invention is conspicuous, at first, only use a depression bar to finish compression in the present invention, eject and stop the task of die come-up, therefore, simple in structure, low cost of manufacture, secondly, in the present invention, because compression is arranged, eject governor motion, make the slippage of die and fall time can adapt to different powder, different product requirements, and can adopt the stop relieving mechanism in the prior art, so there is not impact phenomenon in the moment that begins to eject, but quite steady, so the quality of product can be improved on the basis of prior art.So, reached with better simply mechanism and method of operating according to powder shaping press of the invention process, produce the purpose of quality product.
The drawing explanation:
Fig. 1 is the longitudinal section of powder shaping press shown in the clear 60-162597 of Japanese publication.
Fig. 2 is the profile along Fig. 1 II-II line.
Fig. 3 is the longitudinal section according to first kind of embodiment of powder shaping press of the invention process.
Fig. 4 is the left cutaway view of press shown in Figure 3.
Fig. 5 for according to the compression of powder shaping press of the invention process, eject the cutaway view of governor motion.
Fig. 6 is according to the swing arm of powder shaping press of the invention process and the cutaway view of the syndeton between the lower link.
Fig. 7 is the profile along B-B hatching among Fig. 6.
Fig. 8 is the trip map according to a certain goods of compacting of the working end of the swing arm of powder shaping press of the invention process, die, upper punch.
Fig. 9, Figure 10, Figure 11, Figure 12 be respectively with trip map shown in Figure 8 on a, b, c, the corresponding cam and the roller location drawing in d each point position.
Figure 13 is the schematic diagram according to second kind of embodiment of powder shaping press of the invention process.
The present invention is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 3, bent axle (1) is supported on the top of fuselage (3) by bearing (2), and bent axle (1) is driven by gear reduction (not drawing among the figure) by power source (not drawing among the figure).Top shoe (4) is connected on the bent neck (1a) on the bent axle (1) freely by connecting screw rod (5) and crank adapter sleeve (6) lifting.
The press die set is made of upper punch (8), die (9), core bar (10), low punch (11), upper punch (8) is connected on the top shoe (4) by adapter sleeve (60), die (9) is fixedly set in the hole of work top (12), and is connected with lower pulling plate (14) by work top (12), guide post (13).Guide post (13) can freely be moved up and down by the pilot hole on the fuselage (21) support, an end that is placed in the outer pneumatic cylinder of guide post (13) (or being hydraulic cylinder) (22) is connected with fuselage, the other end is connected with the lower surface of work top (12), it gives (12) active forces that it is moved upward of work top, core bar (10) is connected with work top (12), thereby also is connected with die (9) and lower pulling plate (14) by connecting plate (16), connecting rod (15).Low punch (11) links to each other with piston (18) by bearing (17), and piston (18) is located in the oil cylinder (19) of fixedlying connected with fuselage (3), makes oil cylinder (19) become the pressure pad of low punch (11).One end of lower link (23) is connected with lower pulling plate (14), the other end be positioned at fuselage (3) on limiting plate (24) under nut (25) be connected, adjusting nut (25) can change the upper limit position (immediate shipment powder height) of die (9).
As shown in Figure 5, the compression cam (26) that curve shape and position have nothing in common with each other mutually is housed and ejects cam (27) at an end of bent axle (1), cam (26) on upper end of adjustment rack (28) (28a) and bent axle (1), (27) between, with cam (26), (27) corresponding position is respectively equipped with and regulates the compression that compression time and ejection cycle are used, eject and regulate turning rolls (29), (30), with compression, eject cam (26), (27) compression of contact respectively, eject roller (31), (32) respectively by being located at the roller shaft (33) on the turning rolls, (34) be articulated in turning rolls (29), (30) in, this two pair roller and roller shaft constitute compression respectively, eject roller devices, compression adjustment bolt (35), eject an end (35 of regulating bolt (36), 36 are the adjustable connector that connects turning rolls and adjustment rack 28) by back-up ring (37a), (37b) be individually fixed on the upper end (28a) of adjustment rack (28) other end and turning rolls (29), (30) be threaded.By regulating bolt (35), (36), can change the relative position of turning rolls (29), (30) and adjustment rack (28), can change the relative position of roller (31), (32) and cam (26), (27) respectively.Constitute compression, eject governor motion (7) by the adjustable roller devices in these two pairs of positions, the adjustable connector that connects this roller devices and adjustment rack (28) and adjustment rack (28).
As shown in Figure 4, support by two fairleads (44) that are fixed on the fuselage (3), and the upper end that can only free-moving along the vertical direction depression bar (38) and the lower end (28b) of adjustment rack (28) link into an integrated entity, swing arm (39) is arranged at the press central lower, and can freely rotate around the fulcrum (40) that is fixed on the fuselage, fulcrum (40) position is arranged at the middle part of swing arm, the lower end of depression bar (38) is connected with swing arm (39) by slide block (41) that is connected in depression bar (38) lower end and the chute (42) that is positioned at swing arm (39) one ends, one end of compression spring (43) is connected with the lower end of fairlead (44), the other end is connected with the lower end of depression bar (38), and this spring (43) always acts on the last lower pulling force of depression bar (38) so that roller (31) is in contact condition with cam (26) or roller (32) with cam (27).
The other end of swing arm (39) is that the working end is connected with lower link (23) adjustable ground, lower link (23) is provided with to be regulated on the die, the adjusting device that the lower position is used, the structure of this connection and adjusting device such as Fig. 6, shown in 7, mainly comprising can be along on the lower link (23), the regulating sleeve of lower slider (48), slide block (47), be located at the chute (46) of swing arm (39) one ends, be located at the flange (49) on the lower link (23) of regulating sleeve (48) below, be fixed in the limiting plate (24) on the fuselage (3) of flange (49) below, be positioned at this limiting plate (24) below, with the adjusting nut (25) that is threaded on the lower link (23).Regulating sleeve (48) is positioned on the lower link (23) of limiting plate (24) top, and place in the slide block (47), regulating sleeve (48) is connected by screw thread (50) with slide block (47), slide-bar (51) places in the slide block (47), slide block (47) places in the chute (46), slide-bar (51) can have trace to rotate in slide block (47), slide block (47) can move along chute (46), by regulating the distance between the upper surface (49a) that regulating sleeve (48) can change the lower surface (48a) of regulating sleeve (48) and the flange (49) on the lower link (23), thereby can regulate the lower position of die.And adjusting nut (25) is the upper limit position of lower link (23) die with the position of limiting plate (24) when contacting, and can regulate this upper limit position by adjusting nut (25).
Powder shaping press with said structure, after the action beginning, along with the rotation of bent axle (1), upper punch (8) and top shoe (4) begin to move downward together.Simultaneously, two cams (26), (27) also begin to rotate, at first, compression cam (26) contacts with roller (31) and with adjustment rack (28) jack-up that makes progress, and by depression bar (38), swing arm (39), lower link actuating members such as (23), die (9) and core bar (10) are moved downward with work top (12), at this moment, upper punch (8) has embedded in the die (9) and has moved downward continuing, and decrease speed is higher than the speed of die (9), and low punch (11) maintains static, like this, powder in the die (9) just is subjected to, compression travel is finished in the two-way compacting of low punch and be pressed into goods.Then, upper punch (8) upwards gos up, ejecting cam (27) begins and ejects roller (32) and contact, adjustment rack (28) is further upwards pushed up, same by depression bar (38), swing arm (39), lower link (23) etc., die (9) and core bar (10) are further moved downward, stampings are ejected die (9), finish ejection stroke until low punch (11).
Cam concerns with the mutual alignment of roller during about the concrete impulse stroke of this powder shaping press main actuating member in process and each actuating length, below utilizes Fig. 8 and Fig. 9 to be described further.
In the present embodiment, because depression bar (38) and lower link (23) are positioned at the both sides of the fulcrum (40) of swing arm (39), so during the die of leaving behind (9), depression bar (38) moves upward, both direction of motion is opposite.But the other end of the swing arm of swinging with depression bar (38), the working end direction of motion that is swing arm is consistent with die (9), and die (9) descends with this working end just, so, Fig. 8 impulse stroke figure of depression bar (38) that do not draw, and the impulse stroke figure of swing arm working end that drawn.
Fig. 8 is the impulse stroke figure of the powder shaping press major part in process in the present embodiment, wherein, 1., 2., 3. be respectively the working end of upper punch (8), swing arm (39) and the stroke curve of die (9), the shape that be located at compression on the bent axle, ejects cam (26), (27) is made by job requirement in advance.
In Fig. 8, transverse axis is represented to be equipped with cam (26), (27) and by crank (6) and top shoe (4) etc. the rotational angle of the bent axle (1) of upper punch (8) is housed, and the longitudinal axis is represented the working end of upper punch (8), swing arm (39) and the lifting position that die (9) changes with this rotational angle.When compacting action beginning, at first as shown in Figure 8, upper punch (8) begins 1. to descend along curve under the driving of top shoe (4).When upper punch (8) was in Fig. 8 (a) some position, upper punch (8) did not also enter in the die (9), and the corresponding cam and the position of roller are as shown in Figure 9.When metal dust firm when upper punch (8) and in the die (9) contacts, between the lower surface (48a) of regulating sleeve (48) and the upper surface (49a) of flange (49) gap is arranged, this gap is the precommpression stroke.When upper punch (8) begin to embed die to press down promptly begin to carry out precommpression after, cam by compression, eject governor motion and make an end of depression bar (38) and the swing arm (39) that links to each other with depression bar (38) begin rising, thereby make the other end of swing arm (39), be that its working end begins 2. to descend along curve, when precommpression finished, the upper surface (49a) of flange (49) just contacted with the lower surface (48a) of regulating sleeve (48).Precommpression finishes swing arm working end, back and continues to descend, and lower link (23) is descended by flange (49), thereby make punch (9) as curve 3. shown in, 2. beginning descends with curve, in this process, compress, to b point compression end, at this moment, the position of cam and roller can change the maximum compressibility or the compression time of depression bar (38) as shown in figure 10 by adjusting bolt (35).Thereafter, upper punch (8) begins to rise to the c point, at b to c, but do not comprise in the process that c orders, the location dimension of depression bar (38) is held in compression position at the end, and pushes down the lower link (23) that links into an integrated entity with die (9) by swing arm (39), stops die (9) to rise.At this moment, as shown in figure 10, pinch rolloer (31) is in contact condition with compression cam (26), is in disengaged condition and eject cam (27) and eject roller (32).During to the c point, begin the process of ejecting, since pinch rolloer (31) with eject roller (32) turning rolls by separately and connector and adjustment rack (28) and depression bar (38) formation one rigid body respectively, therefore along with eject roller (32) with eject cam (27) contact and by jack-up, comprise that the whole rigid body that ejects roller also is lifted thereupon, so, pinch rolloer (31) beginning is thrown off with compression cam (26), at this moment, the relative position of roller and cam as shown in figure 11.Thereafter, upper punch (8) continues to rise, and the working end of swing arm (39) and die (9) continue to descend along the curve that coincides together under the effect that ejects cam (27), and dropping to the d point is lower-limit point, eject end, at this moment the relative position of cam and roller as shown in figure 12.At this moment, compression cam (26) keeps disengaged condition with pinch rolloer (31), and ejects roller (32) and eject cam (27) and be in maximum and eject state.Eject the adjusting bolt by adjusting and can change maximum amount of ejecting or maximum ejection cycle, regulate the lower position that regulating sleeve (48) can change die (9).
Eject when finishing, the upper surface of die (9) and core bar (10) and the upper surface of low punch (11) are in the same plane, and after low punch (11) was released stampings, die (9) and depression bar began to return to initial position separately.
In the above-described embodiments, depression bar (38) is located at the both sides of the fulcrum (40) of swing arm (39) with lower link (23), but also can allow depression bar (38) and lower link (23) be located at the homonymy of fulcrum (40) as shown in figure 13.Label identical with Fig. 3, Fig. 4 among Figure 13 is represented identical or suitable part.At this moment, if lower link (23) is located between depression bar (38) and the fulcrum (40), can reduce action of cam power relatively.If depression bar (38) is located between lower link (23) and the fulcrum (40), then can reduce the stroke of depression bar (38) relatively.Among Figure 13, depression bar (38) is consistent with the direction of motion of lower link (23).
In addition, the adjustable connector that compresses, ejects in the governor motion also can be without bolt, and by regulate chute, hydraulic cylinder waits and connects roller shaft and adjustment rack.
As mentioned above, because powder shaping press of the present invention is provided with compression, ejects governor motion and above-mentioned upper and lower limit governor motion, can control the slippage and the fall time of die exactly, so can adapt to the different requirements of the die of the goods of different powder, differing heights, different inwall fineness, make stampings reach optimum density, again the stop relieving mechanism can be set, can not influence the quality of stampings because of impact phenomenon takes place, so, use this powder press can improve the quality of stampings.
Claims (6)
1, a kind of powder shaping press, its compression, eject (demoulding) mechanism and comprise: be located at the compression cam (26) on the bent axle (1) and eject cam (27), make straight-line depression bar (38) up and down with the rotation of this two cam, the lower link (23) of fixedlying connected with core bar (10) with die (9), and the swing arm (39) that all links with depression bar (38) and lower link (23), can freely swing around a fixed pivot, it is characterized in that above-mentioned compression cam (26) and eject the rear end that cam (27) is located at bent axle (1) toward each other; Have two roller devices compression, eject governor motion (7), two rollers (31) of this roller devices, (32) and each self-corresponding compression cam (26) or eject cam (27) and contact respectively and make rectilinear motion up and down; Only 1 of above-mentioned depression bar (38) is connected compression, the eject governor motion lower end of (7).
2, according to the described powder shaping press of claim 1, it is characterized in that, described compression, eject governor motion (7) and also comprise the adjustment rack (28) of fixedlying connected, described two roller devices positions are connected to adjustable connector (35), (36) on this adjustment rack (28) adjustablely with depression bar (38).
3, according to the described powder shaping press of claim 2, it is characterized in that, described compression, eject that roller devices comprises compression, eject roller shaft (33), (34) and be installed in this compression respectively, eject compression on the roller shaft, eject roller (31), (32).
4,, it is characterized in that described depression bar (38) and lower link (23) are positioned at the both sides of swing arm (39) fulcrum (40), and this depression bar (38) is opposite with the direction of motion of lower link (23) according to the described powder shaping press of claim 1.
5, according to the described powder shaping press of claim 4, it is characterized in that, described lower link (23) is provided with regulates the adjusting device that die (9) upper and lower limit position is used respectively, and is provided with the limiting plate (24) used of restriction upper limit position cooperates with it on fuselage.
6, according to the described powder shaping press of claim 5, it is characterized in that, the described adjusting device of using die (9) upper and lower limit position of regulating respectively is nut (25) and regulating sleeve (48), and, the nut that limits the use of in this adjusting (25) is positioned at the below of described limiting plate (24), and the regulating sleeve (48) that this adjusting limits the use of down is positioned at the top of described limiting plate (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86108609.0A CN1004684B (en) | 1986-12-20 | 1986-12-20 | Powder molding press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86108609.0A CN1004684B (en) | 1986-12-20 | 1986-12-20 | Powder molding press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86108609A CN86108609A (en) | 1988-07-06 |
| CN1004684B true CN1004684B (en) | 1989-07-05 |
Family
ID=4803990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86108609.0A Expired CN1004684B (en) | 1986-12-20 | 1986-12-20 | Powder molding press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1004684B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074983C (en) * | 1998-04-16 | 2001-11-21 | 朱锦忠 | Powder shaping press |
| CN100364763C (en) * | 2006-02-15 | 2008-01-30 | 南京东部精密机械有限公司 | Top pressing system for large powder press |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011116552B4 (en) * | 2011-10-21 | 2015-08-20 | Fette Compacting Gmbh | Press |
| CN103522577B (en) * | 2013-10-22 | 2015-05-13 | 宁波汇众粉末机械制造有限公司 | Undershoot springback device of powder forming machine |
| CN107214991B (en) * | 2017-07-14 | 2023-08-29 | 广西壮族自治区农业科学院农业资源与环境研究所 | Matrix compression molding device |
-
1986
- 1986-12-20 CN CN86108609.0A patent/CN1004684B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074983C (en) * | 1998-04-16 | 2001-11-21 | 朱锦忠 | Powder shaping press |
| CN100364763C (en) * | 2006-02-15 | 2008-01-30 | 南京东部精密机械有限公司 | Top pressing system for large powder press |
Also Published As
| Publication number | Publication date |
|---|---|
| CN86108609A (en) | 1988-07-06 |
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