US3132379A - Compacting press - Google Patents

Compacting press Download PDF

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Publication number
US3132379A
US3132379A US102556A US10255661A US3132379A US 3132379 A US3132379 A US 3132379A US 102556 A US102556 A US 102556A US 10255661 A US10255661 A US 10255661A US 3132379 A US3132379 A US 3132379A
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United States
Prior art keywords
bore
die
punch
powder
ejector plunger
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US102556A
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English (en)
Inventor
Edward V Crane
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EW Bliss Co Inc
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EW Bliss Co Inc
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Filing date
Publication date
Application filed by EW Bliss Co Inc filed Critical EW Bliss Co Inc
Priority to US102556A priority Critical patent/US3132379A/en
Priority to CH434062A priority patent/CH402573A/fr
Priority to GB13892/62A priority patent/GB997901A/en
Priority to BE616239A priority patent/BE616239A/fr
Priority to DE19621458259 priority patent/DE1458259B2/de
Priority to SE4093/62A priority patent/SE303015B/xx
Application granted granted Critical
Publication of US3132379A publication Critical patent/US3132379A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B30B15/32—Discharging presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B22F3/03—Press-moulding apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0005—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses
    • B30B15/0011—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses lubricating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B22F2003/026—Mold wall lubrication or article surface lubrication
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/06—Vacuum

Definitions

  • This invention relates to press apparatus for compacting metal powders and the like, aswell as to means for automatically lubricating the compacting punch, die and mandrel for such presses.
  • the present invention seeks to provide a new and improved compacting press capable of producing an improved product at a higher production rate than previously known presses of this type.
  • a compacting press of the type described herein is adapted for use in compacting metal powder to produce slugs which are subsequently sintered and employed, for example, as billets in an impact extrusion operation.
  • a press having a floating die which moves downwardly at about half the speed of the punch during the compacting operation, the reason being to produce the uniform density desired.
  • it is necessary to provide means for ejecting the compacted mass out of the die at the completion of the compacting operation.
  • the present invention provides a hydro-pneumatic mechanism for controlling the movements of the die and the ejector mechanism without requiring complicated mechanical movements for accomplishing these functions. At the same time, the hydro-pneumatic mechanism facilitates a higher production rate not easily attainable by the use of amechanical movement.
  • Another object of the invention is to provide'means for lubricating the die walls and mandrel of a powder compacting press.
  • the powder to be compacted need not be mixed with a lubricant. :Rather, the walls of the die and mandrel are automatically swabbed with a lubricant after each compacting operation, thereby producing the desired lubricating effect while avoiding the undesirable effects produced by mixing a lubricant throughout the powder.
  • a compacting press comprising a vertically reciprocable die which receives powder to be compacted, a punch which is forced into the upper end of the die, and an ejector plunger having its upper end extending into the lower end of the die.
  • the lower end of ejector plunger is seated against a supporting mem her and provides a rigid surface against which powder is compacted.
  • This ejector plunger is connected to a piston reciprocable within an outer hydraulic cylinder which Patented May 12, 1964 is connected to the punch through connecting rods, the arrangement being such that when the punch moves downwardly, the hydraulic cylinder will move downwardly also; however, the piston and ejector plunger will remain seated against the aforesaid supporting member to provide the necessary surface against which powder is compacted.
  • the reciprocable die is connected through telescoping air cylinders to the aforesaid piston whereby the die will float downwardly while compressing air within the telescoping air cylinders.
  • the fluid By permitting a fluid to flow through a check valve to the lower end of the aforesaid hydraulic cylinder during the downward stroke of the punch, the fluid will be entrapped within the lower end of the cylinder during the upward stroke to force the piston and ejector plunger upwardly and thereby eject a cornpacted mass out of the die while the air cylinders return the die to its original uppermost starting position.
  • the cycle is completed by opening a valve to permit fluid to flow out of the bottom of the hydraulic cylinder while the air cylinders force the aforesaidpiston and ejector plunger downwardly while filling the die with a new charge of powder to be compacted.
  • the aforesaid ejector plunger is provided with an axiallyextending passageway through which a mandrel extends, this mandrel serving to form a core in the compacted slug.
  • FIGURE 1 is a cross-sectional view of the compacting tools and hydro-pneumatic means of this invention showing its working parts in the positions they occupy after the die has been tilled with powder, but before the punch is brought down into the die to compact'the powder therein;
  • FIGURE 2 is a cross-sectional view similar to that of FIGURE 1, but showing the working parts in the positions they occupy during the compacting stroke of the ap paratus;
  • FIGURE 3 is another cross-sectional view similar to that of FIGURES 1 and 2, but showing the working parts in the positions they occupy when a compacted slug is ejected from the die;
  • FIGURE 4 is a partially broken-away view of the powder fee-ding mechanism
  • FIGURE 5 is an enlarged view of the ejector plunger, the mandrel and the die of the invention, showing the manner in which a lubricant is swabbed onto the surfaces of the die and mandrel;
  • FIGURE 6 is a schematic illustration of one type of control system which may be used with the compaction apparatus of this invention.
  • the general organization of the press includes a bolster plate 10 which is supported by bed frame members, not shown, as at 12 and 14-. Supported on the bolster plate 10 is'the die holder 18. As shown, the die holder 18 is provided with a central aperture 20 which receives an annular or cylindrical member 22 having threads provided on its outer periphery, the member being secured to block 18 by means of bolts 21. Above the cylindrical member 22 is a second cylindrical member or annular nut 28 which supports, on its upper surface, a die table 30.
  • the die table 30 is provided with an annular ring 32 having a flange 34 which is interlocked with a cooperating flange 36 on the upper edge of nut 28, the arrangement being such that the nut 28 may be rotated to raise or lower the die table without rotating the die table itself.
  • a centrally disposed bore 38 Surrounding the lower edge of bore 38 is a bushing 40 which is fastened to the die table 30 as by means of bolts 42. Reciprocably received within the bore 38 and bushing 40 is a die block 44 surrounded by an annular member 46 which is slideable on the inner surface or periphery 48 of the cylindrical member 22. Member 46 is secured to the die block 44 between shoulder 50 and an annular ring 52 which is secured to member 46 by means of bolts 54. Formed on the inner periphery, or wall 48 of the cylindrical member 22, there may be provided a keyway 56 which slidably receives a key 58 located in the annular member 46.
  • the key 58 and the keyway 56 are not, however, required, and may be omitted if desired.
  • the entire assembly of die block 44, member 46, and the ring 52 may reciprocate within the cylindrical members 22 and 40. As the assembly moves downwardly, for example, the upper reduced diameter portion of the die block 44 will slide on the inner periphery of bore 38 and bushing 40; while the annular member 46 will slide on the inner periphery 48 of cylindrical member 22.
  • the die block 44 has a centrally disposed bore 60 extending therethrough; and this bore receives, at its lower end, an ejector plunger 62.
  • the ejector plunger 62 In its lowermost position, shown in FIGURE 1, the ejector plunger 62 is seated on the bolster plate 10 as at 64 whereby its upper cup shaped end 66 Will act as a floor against which powder is compacted.
  • Extending through the ejector plunger 62 is a centrally disposed mandrel 68 which serves to form a core in the compacted slug as will hereinafter be explained.
  • the mandrel 68 At its lower extremity the mandrel 68 is threaded into a rod 70 which, in turn, is threaded into a horizontally-extending plate or member 72.
  • FIGURES 1, 2 and 3 Secured to the plate 72 are four circumferentially spaced rods, only two of which are shown in FIGURES 1, 2 and 3, and identified by the numerals 74 and 76. These rods contact the lower surface of the annular member 46 of the die as sembly whereby the entire die assembly of elements 44, 46 and 52 will reciprocate with the mandrel rod 68 and the plate 72 as a unit.
  • a punch 78 Disposed above the bore 60 in die block 44 is a punch 78 having an axial bore 80 therein which receives the mandrel rod 68 during a compacting operation.
  • the punch 78 is carried on a punch plate 82 by means of an annular ring 84, substantially as shown.
  • the punch 78 has a cup shaped aperture 79 which is similar to the cup shaped end 66 of the ejector plunger 62.
  • the cup shaped aperture 79 of the punch cooperates with the cup shaped end 66 of the ejector plunger to form a compact or slug C which has beveled upper and lower edges, as shown in FIGURE 3.
  • the beveled edges tend to minimize the effect of, and in some instances may prevent the distortion of the edges of the slug during subsequent handling and treatment of the slug. For example, if the slug were formed with square edges, distortion of the edges during sintering may produce burrs or projections extending from the slug. These edge defects may interfere with the feeding of the slug into an extrusion die.
  • a pair of rods 88 and 90 Threaded into the punch plate 82 and depending downwardly therefrom are a pair of rods 88 and 90 which extend through openings provided in the plate 18, the bolster block 10 and the horizontal plate 72. These rods are connected at their lower extremities to a horizontal cross member 92 which supports a hydraulic cylinder 94 surrounded by a cylindrical member 96 which forms an annular oil reservoir 98 between the inner periphery of member 96 and the outer periphery of the cylinder 94. Communicating with the cylinder 94 of a bore 100 in cross member 92, the bore being provided at its bottom end with a closure plate 102 which is bolted to the cross member.
  • a piston member 104 Received within the cylinder 94 is a piston member 104 which is connected through a pair of rods 106 to the ejector plunger 62, the arrangement being such that as the piston member 104 moves upwardly, the ejector plunger will be forced upwardly also to eject a compacted mass out of the bore 60. Only one of the rods 106 is shown in FIGURES 1, 2 and 3. One of these rods lies behind the pin 70 while the other rod lies in front of the pin, as will be understood.
  • a horizontal plate 105 Positioned on top of the piston member 104 is a horizontal plate 105. Carried on this plate in depending relationship is a cylindrical skirt 108 which carries, at its lower extremity, an annular ring 110. Between ring 110 and the horizontal plate 72 are a pair of air cylinders 112 and 114, each of which comprises a pair of telescoping parts 116 and 118. The telescoping parts 116 and 118 are sealed such that when member 116 moves downwardly into member 118, for example, the air within the cylinder will be compressed.
  • a piston ring 222 is located between the inner surface of skirt 108 and the outer periphery of member 96.
  • a port 224 (see FIG. 2) formed in the skirt 108 communicates by means of conduit 228 with a choke 230 and a check valve 226.
  • the check valve 226 is connected to permit the admission of atmospheric air into the space confined between the lower surface of plate "105 and the top of annular cylinder 94 within skirt 108.
  • Piston ring 222 acts as a seal against the passage of air outwardly between the skirt 108 and the outer periphery of member 96, thereby permitting the escape of air from this space to be controlled by the choke 230. In this manner, the dashpot action of the piston ring 222 may be controlled to cushion the downward movement of the ejector.
  • a conduit 120 Connecting the bore 100 and the lower end of cylinder 94 to the bottom of reservoir 98 is a conduit 120 having a check valve 122 therein which permits liquid to flow from the reservoir into the bottom of cylinder 94 while preventing the return of liquid into the reservoir from the cylinder.
  • check valve 122 In shunt with check valve 122 is a pressure relief valve 124 and a controlled valve 126 which is operated by means of an air cylinder 128.
  • the check valve 122 will prevent the return of liquid into the reservoir, meaning that the piston member 104, rods 106, and the ejector plunger 62 will be forced upwardly.
  • Pressure relief valve 124 serves to limit the upward pressure to provide protection in case of a binding action or the like on ejector 62.
  • the valve 126 must be opened by air cylinder 128 to permit the liquid at the lower end of cylinder 94 to flow back into the reservoir 98.
  • FIGURE 4 the powder feed mech' anism of the press is shown, it being understood that this mechanism extends transversely with respect to the press structure as shown in FIGURES 1, 2 and 3. It comprises a pneumatic cylinder 130 which is connected through a piston rod 132 to a feed carriage 134. Formed in the lefthand portion of the feed carriage 134, as shown in FIG- URE 4, is a bore 136 adapted to register with a delivery tube 138 which leads to a metal powder storage bin, not shown. The lower end of the feed tube 133 fits over a cylindrical member 149 which is welded or otherwise se-,
  • bracket 142 curely fastened to a bracket 142.
  • the bracket 142 is supported by means of threaded connector studs 144 and 146 to the die table 31).
  • annular member 143 having a seal 150 provided in its lower edge which engages the surface of the feed carriage 134.
  • This member 148 is forced downwardly against the upper surface of the feed carriage by means of springs 152 interposed between the bracket 142 and the member 148, the arrangement being such that sufiicient pressure will be exerted on the seal 150 to restrain powder from being spread over the upper surface of the feed carriage 134.
  • annular flange 154 Depending downwardly from the left-hand end of the feed carriage 134, and concentric with the bore 136, is an annular flange 154. Surrounding this flange is a ring member 156 which, like member 148, has in its bottom surface a seal 158 which rides on the upper surface of the die table 30. Interposed between ring member 156 and the feed carriage 134 are coil springs 16% which serve to force the member 156 and the seal 158 into engagement with the die table 30 and restrain powder from being spread over the table. 7
  • the cylinder 130 may be actuated to move the feed carriage 134 to the right as shown in FIGURE 4, until bore 136 registers with the bottom of feed tube 138. At this point, the powder in the feed tube 138 will flow into the central cavity 162 formed by flange 154 and ring member 156. Thereafter, the cylinder 130 will be actuated to move the feed table 134 to the left as shown in FIGURE 4 whereby the cavity 162 will be positioned over the bore 60 in die block 44 such that the powder may be drawn into the bore by down ward movement of ejector plunger 62 preparatory to a compacting operation.
  • the ejector plunger 62 is provided with an axially-extending inner bore 164 through which the mandrel rod 68 extends.
  • the main portion of the bore 164 has a diameter substantially larger than that of the mandrel rod 63 to provide an annular passageway around the mandrel.
  • This passageway is connected through hole 166 to a flexible hose, not shown, which is adapted to deliver alubricant to the bore 164.
  • O-rings 168 seal the lower end of the annular passageway to prevent leakage from the bottom of the bore.
  • the positions of the parts of the press shown are those which they will occupyjust before the punch 78 is forced down into the bore 60 to effect a compacting operation.
  • powder P will have been charged into the bore by the powder feed mechanism shown in FIGURE 4.
  • the punch plate 82 and punch 78 are forced downwardly into bore 60 by means of a conventional crankshaft-type press, not shown.
  • the rods 88 and 90 as well as the cross member 92 will be forced downwardly also, thereby pulling the cylinder 94 and reservoir 93 along with it.
  • Plate 72 moves downwardly on rods 88 and 99, while the die assembly moves downwardly on the surfaces of bore 38 and flange 40' as well as the inner peripheral surface 48 of cylindrical member 22.
  • the members'116 and 118 of each air cylinder 112 and 114 have telescoped to thereby compress the air within the cylinders.
  • the space between the lower end of piston 134 and the plate 102 has increased, and this space is filled with oil flowing through the check valve from reservoir 98.
  • the pressure relief valve 124 will prevent an excessive I buildup of pressure beneath the piston 154 due to any binding or to reaching the stop position of the ejector plunger 62.
  • FIGURE 3 The positions of the parts of the press when the ejector plunger reaches its uppermost position are shown in FIGURE 3. At this point, the air cylinders 112 and 114 will be fully telescoped and the air within these cylinders will be at maximum pressure since the piston 194 has been forced upwardly by the column of oil in cylinder 94 beneath the piston. At this point, the compacted slug C will have been ejected out of bore 60. Thereafter, the cylinder shown in FIGURE 4 is pressurized to move the feed carriage 134 over the bore 61), thereby pushing the previously compacted slug C olf of the die table 36 and positioning the cavity 162 over the bore 61).
  • valve 126 is opened by air cylinder 128 to permit oil to flow from the bottom of cylinder 94 back into reservoir 98, thereby permitting the air cylinders 112 and 114 to force the piston 104 and the ejector plunger 62 downwardly until its lower surface seats'against the bolster plate 10 at 64.
  • a lubricant is injected into bore 164 and is forced through radial passages 172 onto the peripheral surface of bore 61 as well as onto the surface of mandrel rod 60.
  • a lubricant such as a solution of zinc stearate in benzene, is swabbed onto the surfaces of these two members. Simultaneously, a new charge of powder is drawn into the bore 69 preparatory to the succeeding compacting operation.
  • the cylinder13i When the ejector plunger 62 reaches its lowermost position, the cylinder13i will be pressurized to move the feed carriage 134 out of registry with the bore 60 Whereby the punch 78 may be forced downwardly into the bore to start a new cycle of operation.
  • the height of the column of powder charged into bore 60 may be adjusted by turning the large annular nut 28 to raise or lower the die table 30.
  • FIGURE 6 Control apparatus for effecting the foregoing functions is shown in FIGURE 6, it being understood that the particular control apparatus disclosed herein is for purposes of illustration only, and that other types of control systems may be employed to etfect the same results.
  • the timer 184 will deenergize the solenoid 182 whereby the valve 186 will pressurize the cylinder 130 to move the feed carriage 134 to the right.
  • limit switch 194 is opened to close valves 198 and 202 whereby the springs provided in cylinders 128 and 204 will force their associated pistons to their original positions.
  • the present invention thus provides a compacting press in which no complex mechanical movement is required to acuate the die and other moving parts of the device, which has a very high production rate, and which automatically provides for lubrication of the die and mandrel without requiring mixing of a lubricant with the powder and its attendant difliculties.
  • a compacting press for metal powders and the like comprising a vertically reciprocable die having a vertical bore extending therethrough for the reception of a powder -to be compacted, a vertically reciprocable punch adapted to be forced into the upper end of said bore, an ejector plunger having its upper end extending into the lower end of said bore to provide a bottom surface against which powder is compacted, means for limiting downward movement of the ejector plunger beyond a point where its upper end extends into the bore, hydraulic cylinder means for moving said ejector plunger upwardly from said point into the bore at the completion of a compacting operation to force a compacted mass out of the top of the bore,'said hydraulic cylinder means having an outer cylinder closed at its bottom and open at its top, means connecting said outer cylinder to said punch whereby it will reciprocate with the punch, a piston member received within the open top end of said outer cylinder and reciprocable therein above a column of substantially noncompressible fluid, means connecting said piston member to the e
  • a compacting press for metal powders and the like comprising a vertically reciprocable die having a vertical bore extending therethrough for the reception of a powder to be compacted, a vertically reciprocable crankdriven punch adapted to be forced into the upper end of said bore, an ejector plunger having its upper end extending into the lower end of said bore to provide a bottom surface against which powder is compacted, means for limiting downward movement of the ejector plunger beyond a point where its upper end extends into the bore, hydraulic cylinder means for moving said ejector plunger upwardly from said point into the bore at the completion of a compacting operation to force a compacted mass out of the top of the bore, said hydraulic cylinder means comprising an outer cylinder connected to said punch and reciprocable therewith, a piston member reciprocable within said outer cylinder and connected to said ejector plunger, a liquid reservoir, check valve means connecting the liquid reservoir to the bottom of said outer cylinder whereby liquid will flow from the reservoir to the bottom of the cylinder as the cylinder
  • a compacting press for metal powders and the like comprising a die having a vertical bore extending therethrough for the reception of a powder to be compacted, a vertically reciprocable punch adapted to be forced into the upper end of said bore, an ejector plunger having its upper end extending into the lower end of said bore to provide a bottom surface against which powder is compacted, means for limiting downward movement of the ejector plunger beyond a point where its upper end extends into the bore, means for cushioning the downward movement of said ejector, hydraulic cylinder means for moving said ejector plunger upwardly from said point into the bore at the completion of a compacting operation to force a compacted mass out of the top of the bore, said hydraulic cylinder means comprising an outer cylinder connected to said punch and reciprocable therewith, a piston member reciprocable within said outer cylinder and connected to said ejector plunger, a liquid reservoir, check valve means connecting said liquid reservoir to the bottom of said outer cylinder whereby liquid will fiow from the reservoir into the
  • powder loading means including powder delivery tube means; powder receiving means adapted to be shiftably positioned beneath said powder delivery tube means to receive a charge of powder therefrom; and crank synchronized means to shift said powder receiving means from beneath said powder delivery tube means to pass over and center on said die bore after a compacted mass has been ejected therefrom, and a valve device operable when said powder loading means is over the top of said bore for permitting liquid to flow from the lower end of said outer cylinder to said reservoir, the arrangement being such that when said valve device opens the piston member and ejector plunger will move downwardly to charge said bore with a new supply of powder to be compacted.
  • a compacting press for metal powders and the like comprising a vertically reciprocable die having a Vertical bore extending therethrough for the reception of a powder to be compacted, a vertically reciprocable punch adapted to be forced into the upper end of said bore, ejector plunger having its upper end extending into the lower end of said bore to provide a bottom surface against which powder is compacted, means for limiting downward movement of the ejector plunger beyond a point Where its upper end extends into the bore, hydraulic cylinder means for moving said ejector plunger upwardly into the bore at the completion of a compacting operation to force a compacted mass out of the top of the bore, said hydraulic cylinder means comprising an outer cylinder connected to said punch and reciprocable therewith, a piston member reciprocable within said outer cylinder and connected to said ejecting plunger, a liquid reservoir, check valve means connecting said liquid reservoir to the bottom of said outer cylinder whereby liquid will flow from the reservoir to the bottom of the cylinder during the downward stroke of said punch and said outer
  • a compacting press as claimed in claim 1 including means for lubricating the walls of said bore after each compacting cycle comprising an axially-extending passageway in said ejector plunger, radial holes extending between said passageway and the outer peripheral surface of the plunger, and means for forcing a lubricant into said passageway and out through said holes after the plunger has ejected a compacted mass from the bore, the arrangement being such that when the plunger retracts from said one end of the bore preparatory to a succeeding compacting operation it will wipe the lubricant onto the wall of the die bore.
  • a compacting press as claimed in claim 1 including a mandrel axially slideable within said plunger and extending into said bore, means for lubricating the walls of said bore and said mandrel after each compacting cycle comprising an annular chamber formed in said plunger and surrounding said mandrel, radial holes extending between said annular passageway and the outer peripheral surface of the plunger, and means for forcing a lubricant into said passageway and out through said holes after the plunger has ejected a compacted mass from the bore, the arrangement being such that when the plunger retracts from said one end of the bore preparatory to a succeeding compacting cycle it will wipe the lubricant onto the surfaces of said bore and said mandrel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Press Drives And Press Lines (AREA)
US102556A 1961-04-12 1961-04-12 Compacting press Expired - Lifetime US3132379A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US102556A US3132379A (en) 1961-04-12 1961-04-12 Compacting press
CH434062A CH402573A (fr) 1961-04-12 1962-04-10 Presse pour rendre compactes des poudres métalliques
GB13892/62A GB997901A (en) 1961-04-12 1962-04-10 Improvements in or relating to a compacting press
BE616239A BE616239A (fr) 1961-04-12 1962-04-10 Presse pour rendre des poudres métalliques compactes
DE19621458259 DE1458259B2 (de) 1961-04-12 1962-04-12 Auswerfeinrichtung für Matrizenpressen
SE4093/62A SE303015B (fr) 1961-04-12 1962-04-12

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Application Number Priority Date Filing Date Title
US102556A US3132379A (en) 1961-04-12 1961-04-12 Compacting press

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US3132379A true US3132379A (en) 1964-05-12

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US102556A Expired - Lifetime US3132379A (en) 1961-04-12 1961-04-12 Compacting press

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US (1) US3132379A (fr)
BE (1) BE616239A (fr)
CH (1) CH402573A (fr)
DE (1) DE1458259B2 (fr)
GB (1) GB997901A (fr)
SE (1) SE303015B (fr)

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200465A (en) * 1963-01-28 1965-08-17 Benjamin Lassman & Son Solids press molding apparatus
US3315309A (en) * 1963-11-22 1967-04-25 Air Reduction Apparatus for molding composition resistors
US3382540A (en) * 1965-11-30 1968-05-14 Philips Corp Press for manufacturing articles from powder material
US3414940A (en) * 1966-04-21 1968-12-10 Pentronix Inc Tool capsule for powder compacting press
US3460202A (en) * 1967-04-28 1969-08-12 Cincinnati Shaper Co Hydraulic releasable stop device for presses and the like
US3491407A (en) * 1967-12-18 1970-01-27 Ibm Press for ferrite cores
US3517414A (en) * 1967-08-31 1970-06-30 Scottdel Inc Apparatus for processing plastic material
US3524220A (en) * 1967-11-15 1970-08-18 Western Electric Co Die set for compacting powder
US3543344A (en) * 1967-02-22 1970-12-01 Rolls Royce Moulding press
US3548455A (en) * 1967-08-03 1970-12-22 Reuter Inc Apparatus for direct conversion of powdered materials into parts
US3640654A (en) * 1970-06-25 1972-02-08 Wolverine Pentronix Die and punch assembly for compacting powder and method of assembly
US3647332A (en) * 1969-08-29 1972-03-07 Parker Hannifin Corp Hydraulic press
US3659985A (en) * 1968-12-13 1972-05-02 Birmingham Small Arms Co Ltd Presses
US3687588A (en) * 1970-09-08 1972-08-29 Wolverine Pentronix Lubricated die and punch assembly for compacting powder material
US3728054A (en) * 1970-12-17 1973-04-17 Electronic Memories & Magnetic Magnetic core forming apparatus
US3764244A (en) * 1972-05-30 1973-10-09 D Hurley Apparatus for compacting granular material
US3788787A (en) * 1971-11-26 1974-01-29 H Silbereisen Hydraulic metal powder press
US3868201A (en) * 1973-04-17 1975-02-25 Wickes Corp Powdered metal press
US3871877A (en) * 1970-07-08 1975-03-18 Sinteral Corp Producing aluminum powder compacts
US3887685A (en) * 1972-08-03 1975-06-03 Von Roll Ag Automatic feed block molding press for granular materials
US3920364A (en) * 1968-11-19 1975-11-18 Cadogan Rawlinson Christopher Press
US3995979A (en) * 1973-12-05 1976-12-07 Ing. C. Olivetti & C., S.P.A. Apparatus for lubricating moulds for blanks
US4024209A (en) * 1973-10-10 1977-05-17 General Atomic Company Method for making nuclear fuel rods
US4147489A (en) * 1977-06-22 1979-04-03 British Nuclear Fuels Ltd. Powder compacting presses
US4147490A (en) * 1976-08-13 1979-04-03 British Nuclear Fuels Ltd. Powder compacting presses
DE2812677A1 (de) * 1978-03-23 1979-10-04 Gunter M Voss Verfahren zum bespruehen der verdichtungswerkzeuge von maschinen zur herstellung von formlingen
US4266919A (en) * 1979-08-09 1981-05-12 E. I. Du Pont De Nemours And Company Ram-extrusion apparatus for non-melt fabricable polymeric resins
US4289472A (en) * 1979-10-17 1981-09-15 Wehr Corporation Press for refractory material and having removable core moving apparatus
US4292017A (en) * 1980-07-09 1981-09-29 Doepel Wallace A Apparatus for compressing tablets
US4364719A (en) * 1981-08-27 1982-12-21 Acheson Industries, Inc. Spray apparatus for metal forming and glassware forming machines
US4390335A (en) * 1982-02-23 1983-06-28 Ptx-Pentronix, Inc. Die, punch and core rod assembly for compacting powder material
US4427352A (en) 1982-02-23 1984-01-24 Ptx-Pentronix, Inc. Mounting structure for die, punch and core rod assembly for compacting powder material
US4439129A (en) * 1982-10-26 1984-03-27 Wehr Corporation Hydraulic refractory press including floating upper and lower plunger assemblies
US4447198A (en) * 1982-10-26 1984-05-08 Wehr Corporation Hydraulic refractory press including product thickness or density control means
US4452578A (en) * 1981-08-27 1984-06-05 Acheson Industries, Inc. Spray apparatus for metal forming and glassware forming machines
US4565082A (en) * 1982-08-06 1986-01-21 Acheson Industries, Inc. Spray apparatus for metal forming machines
US4569650A (en) * 1984-02-07 1986-02-11 Kilian & Co., Gmbh Tablet press
US4818201A (en) * 1987-11-19 1989-04-04 Martin Sprocket & Gear, Inc. Method of manufacturing bushings with powdered metals
US5156854A (en) * 1991-01-31 1992-10-20 Hitachi Powdered Metals Co., Ltd. Press forming apparatus for sintered parts
EP0999039A3 (fr) * 1998-11-02 2000-05-24 Sumitomo Special Metals Co., Ltd. Dispositif et procédé de pressage de poudre
WO2001036132A1 (fr) * 1999-11-18 2001-05-25 National Research Council Of Canada Procede et appareil de lubrification des parois d'une matrice
WO2008061342A1 (fr) * 2006-11-20 2008-05-29 Stackpole Limited Procédé et appareil de lubrification de paroi de matrice
US20090193637A1 (en) * 2005-09-02 2009-08-06 Mccracken Colin Method of forming anode bodies for solid state capacitors
CN111957958A (zh) * 2020-07-27 2020-11-20 西部宝德科技股份有限公司 一种金属粉末压制成型滤芯的气动脱模装置
CN112776409A (zh) * 2021-01-08 2021-05-11 乔春园 一种机制炭生料棒成型设备
CN113002046A (zh) * 2021-03-03 2021-06-22 林美珊 一种螺旋挤压式固液分离机

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US994349A (en) * 1910-03-28 1911-06-06 William B Updegraff Press for plastic materials.
US1339712A (en) * 1915-03-27 1920-05-11 Albert A Pauly Molding apparatus
US2449257A (en) * 1942-09-01 1948-09-14 Hpm Dev Corp Press for powdered metals
US2398227A (en) * 1943-04-02 1946-04-09 Hydraulic Dev Corp Inc Briquetting press
US2556951A (en) * 1944-06-05 1951-06-12 Stokes Machine Co Powdered material compacting press
US2509783A (en) * 1945-10-17 1950-05-30 Hpm Dev Corp Apparatus for molding
US2651180A (en) * 1949-05-18 1953-09-08 Haller John Compound hydraulic motor for molding presses
US2810929A (en) * 1953-05-06 1957-10-29 Baldwin Lima Hamilton Corp Apparatus for compacting and ejecting flanged articles
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Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200465A (en) * 1963-01-28 1965-08-17 Benjamin Lassman & Son Solids press molding apparatus
US3315309A (en) * 1963-11-22 1967-04-25 Air Reduction Apparatus for molding composition resistors
US3382540A (en) * 1965-11-30 1968-05-14 Philips Corp Press for manufacturing articles from powder material
US3414940A (en) * 1966-04-21 1968-12-10 Pentronix Inc Tool capsule for powder compacting press
US3543344A (en) * 1967-02-22 1970-12-01 Rolls Royce Moulding press
US3460202A (en) * 1967-04-28 1969-08-12 Cincinnati Shaper Co Hydraulic releasable stop device for presses and the like
US3548455A (en) * 1967-08-03 1970-12-22 Reuter Inc Apparatus for direct conversion of powdered materials into parts
US3517414A (en) * 1967-08-31 1970-06-30 Scottdel Inc Apparatus for processing plastic material
US3524220A (en) * 1967-11-15 1970-08-18 Western Electric Co Die set for compacting powder
US3491407A (en) * 1967-12-18 1970-01-27 Ibm Press for ferrite cores
US3920364A (en) * 1968-11-19 1975-11-18 Cadogan Rawlinson Christopher Press
US3659985A (en) * 1968-12-13 1972-05-02 Birmingham Small Arms Co Ltd Presses
US3647332A (en) * 1969-08-29 1972-03-07 Parker Hannifin Corp Hydraulic press
US3640654A (en) * 1970-06-25 1972-02-08 Wolverine Pentronix Die and punch assembly for compacting powder and method of assembly
US3871877A (en) * 1970-07-08 1975-03-18 Sinteral Corp Producing aluminum powder compacts
US3687588A (en) * 1970-09-08 1972-08-29 Wolverine Pentronix Lubricated die and punch assembly for compacting powder material
US3728054A (en) * 1970-12-17 1973-04-17 Electronic Memories & Magnetic Magnetic core forming apparatus
US3788787A (en) * 1971-11-26 1974-01-29 H Silbereisen Hydraulic metal powder press
US3764244A (en) * 1972-05-30 1973-10-09 D Hurley Apparatus for compacting granular material
US3887685A (en) * 1972-08-03 1975-06-03 Von Roll Ag Automatic feed block molding press for granular materials
US3868201A (en) * 1973-04-17 1975-02-25 Wickes Corp Powdered metal press
US4024209A (en) * 1973-10-10 1977-05-17 General Atomic Company Method for making nuclear fuel rods
US3995979A (en) * 1973-12-05 1976-12-07 Ing. C. Olivetti & C., S.P.A. Apparatus for lubricating moulds for blanks
US4147490A (en) * 1976-08-13 1979-04-03 British Nuclear Fuels Ltd. Powder compacting presses
US4147489A (en) * 1977-06-22 1979-04-03 British Nuclear Fuels Ltd. Powder compacting presses
DE2812677A1 (de) * 1978-03-23 1979-10-04 Gunter M Voss Verfahren zum bespruehen der verdichtungswerkzeuge von maschinen zur herstellung von formlingen
US4266919A (en) * 1979-08-09 1981-05-12 E. I. Du Pont De Nemours And Company Ram-extrusion apparatus for non-melt fabricable polymeric resins
US4289472A (en) * 1979-10-17 1981-09-15 Wehr Corporation Press for refractory material and having removable core moving apparatus
US4292017A (en) * 1980-07-09 1981-09-29 Doepel Wallace A Apparatus for compressing tablets
US4364719A (en) * 1981-08-27 1982-12-21 Acheson Industries, Inc. Spray apparatus for metal forming and glassware forming machines
US4452578A (en) * 1981-08-27 1984-06-05 Acheson Industries, Inc. Spray apparatus for metal forming and glassware forming machines
US4390335A (en) * 1982-02-23 1983-06-28 Ptx-Pentronix, Inc. Die, punch and core rod assembly for compacting powder material
US4427352A (en) 1982-02-23 1984-01-24 Ptx-Pentronix, Inc. Mounting structure for die, punch and core rod assembly for compacting powder material
US4565082A (en) * 1982-08-06 1986-01-21 Acheson Industries, Inc. Spray apparatus for metal forming machines
US4439129A (en) * 1982-10-26 1984-03-27 Wehr Corporation Hydraulic refractory press including floating upper and lower plunger assemblies
US4447198A (en) * 1982-10-26 1984-05-08 Wehr Corporation Hydraulic refractory press including product thickness or density control means
US4569650A (en) * 1984-02-07 1986-02-11 Kilian & Co., Gmbh Tablet press
US4818201A (en) * 1987-11-19 1989-04-04 Martin Sprocket & Gear, Inc. Method of manufacturing bushings with powdered metals
US5156854A (en) * 1991-01-31 1992-10-20 Hitachi Powdered Metals Co., Ltd. Press forming apparatus for sintered parts
EP0999039A3 (fr) * 1998-11-02 2000-05-24 Sumitomo Special Metals Co., Ltd. Dispositif et procédé de pressage de poudre
US6482349B1 (en) 1998-11-02 2002-11-19 Sumitomo Special Metals Co., Ltd. Powder pressing apparatus and powder pressing method
US20020175439A1 (en) * 1998-11-02 2002-11-28 Sumitomo Special Metals Co. Ltd. Powder pressing apparatus and powder pressing method
WO2001036132A1 (fr) * 1999-11-18 2001-05-25 National Research Council Of Canada Procede et appareil de lubrification des parois d'une matrice
US6299690B1 (en) 1999-11-18 2001-10-09 National Research Council Of Canada Die wall lubrication method and apparatus
US20090193637A1 (en) * 2005-09-02 2009-08-06 Mccracken Colin Method of forming anode bodies for solid state capacitors
US8114340B2 (en) * 2005-09-02 2012-02-14 Avx Corporation Method of forming anode bodies for solid state capacitors
WO2008061342A1 (fr) * 2006-11-20 2008-05-29 Stackpole Limited Procédé et appareil de lubrification de paroi de matrice
CN111957958A (zh) * 2020-07-27 2020-11-20 西部宝德科技股份有限公司 一种金属粉末压制成型滤芯的气动脱模装置
CN112776409A (zh) * 2021-01-08 2021-05-11 乔春园 一种机制炭生料棒成型设备
CN113002046A (zh) * 2021-03-03 2021-06-22 林美珊 一种螺旋挤压式固液分离机

Also Published As

Publication number Publication date
GB997901A (en) 1965-07-14
BE616239A (fr) 1962-10-10
CH402573A (fr) 1965-11-15
DE1458259A1 (de) 1968-12-19
SE303015B (fr) 1968-08-12
DE1458259B2 (de) 1970-06-11

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