DE2036232A1 - Foundry molding machine - Google Patents

Description

Applicant: BADISCHE MASCHINENFABRIK GMBH 75 'KARLSRUHE - DURLACH PFINZTALSTRASSE 90

FOUNDRY - MOLDING MACHINE

■: Ei-i '.' Miüur. ^ Relates to a new · ₉ advantageous construction method for Ι: ·. : '-! .- .. /:, -; νν-Γ ^1. "ΡοΊ? Ώπηίΐ3chine, an FrftSki ⁵ iif?; fi iiiehfc through the Ma-

: ■: .- ^ι · '>': ~: ϋ3 ^ vx-Xi ^ iu and at der- yai'ise Ba ^ s ^ uii ^ santriefc ^ ub: iii- ^j

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.: ■ '"■ -Oi ¹ .;:."";"·''' ^ '?' .-. ■ · "ό ⁵ - ^λ ^ ^; '-! Xyj Ι, γ λ ; X'. · (kiiü filling -.-, «us 7 ^ j.ivl, dsb-nd iU

bs ^% . »£ l7L ¹ p

AT? ÖBnken des Ä.'vn des

1098S3 / 03d?

of all operations at the same altitude, while the mold, box, sand vessel and press head have to be moved away from time to time.

The drive for the first section of the double runway consists of cylinders that are synchronized by a complicated and articulated lever mechanism ^: oil barrel _{5 to} achieve an even separation of form and model *

You drive for the second double runway piece bsstaht from DRSI Z / 7 .Indern _s of which SWEi master cylinder loading for that. Press' \ right sindj, so for downward movement * ,. during §ie for sine .. 3-hnelle upward movement are not suitable and däsier " - for diaassn A ^; .-Beitsgang need a third cylinder _0. -_- '"'

ii-.i ύν-έί Cylinder for the second BoppelrollbahiiSuii ^ id iBÖJsaii fü.v ^j . ^Λ .--- and. iUifmig the sanclgsfaßas. two full Hüi-j- · .; 'diii-üiifaiiri-- ■■' -. ""? ■■ 'v / eabisl swl3üh © ii sand vessel nnc! -Preßh-aup-t- mil3sa.ii- al'S ^ s c> -aÄ, - -

^: . :. i; ir a :: - :, haäla swei i ^ olle sleeve ciuyehfahreii - forr "al ---. & Γίϊϊ ·" * ϊ1 - :. ώώ - '; ^ .'-; ^ at-ir ;! des Prass & iis der Pom

n process üe? G

>; .-: · i-; 3irt * cc.- upper lic-llbahnstückes obstructing * .aiisli durcii na * .gl · -> the loss of time cannot be without disadvantage-

of Disclosure Document-1 503 701 is a FoTssma di © gwar das aufviendige, lifting, and Ssnksn _versehieä®! i $ r H & X *

108S88 / Ö8S2:; ^: "'"■.;.^V:;

. ■■ bad; original

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len tracks in the machine with their separate drives and which also saves the coupling mechanism between the sand filling container and the press head. However, these advantages come at the price of serious disadvantages. The entire motion drive is divided into an upper part above the press head and a lower part, which is arranged in the foundation. This means that the part arranged in the foundation is difficult to access and requires a certain depth of the foundation, apart from the fact that the subdivision results in cumbersome line routing. The avoidance of the dome * mechanism between press head, and in this leads Sandfüllbehälter OS cause the upper movement and Preßantrieb must be dealt with. The increased mass in this way results in a slight displacement speed with high drive and braking forces,

The machine according to the invention avoids these disadvantages, it has a faster way of working because fewer movements are necessary. By absorbing the pressing forces in the tie rods, the machine frame can be made lighter than before. As a result of the simple | In terms of construction, the machine can be manufactured relatively cheaply. Avoiding a movement drive in the foundation reduces the necessary foundation depth. The one movement drive, located above the machine, is easily accessible.

These advantageous properties are achieved in that at a molding machine with a stationary, vertically movable one arranged above Movement and press drive and horizontally movable press head «filling vessel unit an upper and a lower yoke by pulling

L ■■ .. ■■■■■■■■ .- ■■ '■' ■ ■■■

rods to a rigid, vertically displaceable around the entire stroke

109885/0882

203622

Machine part are connected, with the upper yoke of the movement and Press drive engages while the lower yoke the machine table with or without a vibrator and each guide rod is in at least one bearing on the machine frame leads Upward movement in its upper end position, the filling, stripping and Vibration position of the molding box. Reached and the separation during its downward movement by throttling in the outflow of the working medium of model and shape controls and with a large cylinder for "the remaining movements and for the pressing work, with the large cylinder is carried along by the smaller cylinder during the upward movement. Another feature is that the separation of. Shape and Model in the course of the downward movement of the forward stroke cylinder in the position takes place when the molding box is on its stationary transport ' Bahn drops. There is an additional feature for machines with a vibrator in that holding devices on the circumference of the machine distributed the lower 'yoke at the level of the vibrating position in the horizontal and vertical Support direction against the machine frame.

Further details of the new machine can be found in the drawings and can be taken from the description, ■

Fig. 1 shows a vertical section through the machine

Fig. 2 shows a view of the machine from another direction /.

Fig. 3 shows a section through d! E _: ^ Itte &e-iji;r>t; c], i: t; t «ig

with holding devices, _ -. '. "■ - ■

1Ö9885 / 0882 Λ

In Pig, 1 and 2, the machine frame with I ^ is the upper cross member with 2, whose ab s does ζ surface for the press head with 3 and. two lower crossbars labeled 4 »the two-row roller conveyor for the model plate transport consists of the external parts 5 and the part 6 located in the machine. A two-row roller conveyor 7 leading through the machine carries the molding box !. 8, Another two-row roller conveyor 9 carries the press head 10 and the, sand vessel 11, a model plate is designated 12, a filling frame 13 is guided in bearings 15 on rods 14 vertically movable. A double cylinder 16 is attached to the upper yoke 17. Its piston rod 18 is fastened with the bolt 19 in the upper cross traverse 2, tie rods 20 are vertically movably guided in bearings 21 and connected to a lower yoke 22. The lower yoke carries the machine table 27 when the machine is used as a pressing machine without Vibrator executed 1st, with vibrator corresponds to the embodiment of FIG. 3, whereby the vibrator housing 23 is fastened in the lower yoke 22. The anvil 2 ¹ J is supported on the spring 25 and is guided in the cylinder 26 of the machine table 27. The vibrator receives its energy supply through line 28, control edge 29 and channel 30, the outlet takes place via j control edge 31 and openings 32,

The holding device in Fig. 3 engages projections 48 of the lower ■ yoke 22 and is fastened, for example on the 'cross beams 4, is composed of a Gestel-l 49 "which carries the drive 50 and the rotatable around the bolt 51 swing 52 at one end of the swing of the rocker arms 53 let stored 54drehbar around the bolt.

The double cylinder 16 in Fig. 1 contains the Vorhubkolbeη 34. with KoI fairy rod 35 * and the plunger 36 with piston rod 18 and leads

»5- .- ■ - ■■■ - ■. ■" -.,

in the cylinder 37. The energy supply for the Vorhubkolben goes through line 38, the one for the plunger through the Line 39 and that for the downward movement through the line

The operation of the machine is as follows: All horizontal movements within the machine, which take place in three planes arranged one above the other, run almost simultaneously, while no vertical movement takes place. These horizontal movements relate to the retraction of a model plate 12 on a roller conveyor 5 over the machine table 27, the retraction of a shaped - and retraction of an empty molding box 8 on the roller conveyor 7 in the middle of the machine and the retraction of the - filled sand container 11 on the Roller conveyor 9 in a position above the empty molding box 8. As soon as these three parts (12, 8 _$ 11) have taken their correct position, the pre-stroke piston 3.4 receives prints in the double cylinder 16 via the line 38. It supports itself with its piston rod end 35 on the plunger "36, and the engaging cylinder cover forces on the cylinder 37 ₉ upper yoke 17, tensile ~ bars 20, lower yoke 22 on the machine table 27 transmitted during the .Aufwärtsbewegung these parts takes the Maschinentiach 27 first, the match plate 12 _Q upon further booting the empty box 8 comes to lie on the model plate 12 ″ raised a small amount, - has ». . See the upper edge of the PüXlrahmene close under the sand container, but without touching it. The pre-stroke piston 34 has thus reached its end position, taking the plunger 3β with it and displacing the working medium from the space 42 the line kö

109

2038232

Has flowed off »by plunger is now still about the pressing stroke of removed from its end position. Then the empty molding box is filled 8, In the dashed position in Flg. 1, from the sand container Ii by opening the shutter lock 43 with the drive M, In machines with vibrators, in this position according to FIG. 3, the Drives 43 operated. These bring the rocker arm 53 .. into the stop corresponding mating surfaces on the lower yoke «This is the vibrator supported horizontally and vertically and prevented from unwanted movements, while the rod bearings 21 are relieved. In this ' The situation is shaken. After shaking the holding devices withdrawn by the drives 50 to free passage. of the lower yoke, see Fig.2 «Already during the A drive 45 moves the sand vessel 11 out of the machine and shaking the press head IO into the press position, as soon as this position is reached is, the line 39 receives pressure for the plunger 36, its force the filled molding box against the pressing surface 46 under compression of the sand content of the molding box. The forces run through that upper yoke 17 »tie rods 20, lower yoke 22, machine table 27, jj Model plate 12 in the sand content of the molding box. It's out of it it can be seen that the machine frame and its crossbars are free stay away from the pressing forces.

After finishing pressing _; 39 and Pruckzuführung in the line caused by discharge of the line * IO a controlled downward movement of the cylinder 37 and all vertically movable parts% As soon as the piston rod 35 contacts the plunger 36, so to Pu *> ohfahren of the pressing stroke, the pre-stroke piston accepts 34 the guiding the downward movement. A throttle 47 is only effective during the departure movement,

109ÖB5 / J8I2 '/' ■■ -

from a position shortly before the flask 8 is placed on his roller conveyor 7 until shortly thereafter (lowering the model from the Form) «Then the machine carries out the rest of the downward movement up to into the starting position (Fig. 1) at normal speed. After running through this work cycle, the next cycle begins right away"

Die'Preßflache kS of the press head 10 can just _s profiled or formed in a known manner by a "plurality of punches, each of which is supported by a piston against a working medium and where, for example, the working medium spaces are .verbünden with one another, so that over the over the entire surface of the sand in box 8, uniform pressing and compaction of the molding sand results in "

The machine completed with a construction and finish of the double cylinder l6 a stroke in a short time ₀ is -easy built and the movement and Preßantrieb is easily _accessible? The pressing forces are not passed through the machine frame and the cross members, so that these parts are lighter and cheaper ₈ "than before ₀ The machine only needs a very small foundation depth - which saves foundation costs.

10988 5/0862

Claims (1)

-9- Expectations Single-station molding machine with a stationary, vertically movable movement and press drive and horizontally movable press head and filling vessel unit characterized in that that an upper and a lower yoke (17, 22) by tie rods (20) to a rigid, vertical around the whole Hub displaceable machine part; connected, being at the top Yoke (17) engages the movement and press drive (16) while the lower yoke (22) the Masc & JLJ table (27) with or without Carries vibrator and each guide rod (20) is guided in at least one bearing (21) on the machine frame * Molding machine according to claim 1, characterized in that the movement and pressing drive (ΐβ) consists of a double cylinder piston; Unit consists of a pre-stroke cylinder (34) of smaller diameter, which reaches the filling, stripping and shaking position of the molding box during the upward movement in its upper end position and which controls the separation of model and shape by throttling in the discharge of the working medium during its downward movement and with a large cylinder (3β) for the remaining movements and for the pressing work, with the large cylinder during the upward movement is taken by the smaller cylinder «, Molding machine according to claims 1 and 2, characterized in that the separation of form and model when the downward movement of the motion drive is slowed down by lowering the molding box (8) _ takes place on a stationary roller conveyor (7) « Operation of the molding machine according to claims 1 to 3 characterized marked that all work steps before and after the sand »fill into the molding box yoiT the one-time awf and downward movement of the plunger with the advancing piston. be derived" Molding machine according to claim 1 to 3, having - Hüttler; 'marked in dailasreh »characterized in that Halteyorrichtungen (55) on the ümfäBg; Machine: distributes the lower yoke (22) in ä && height of the Rii ^ .; telstellung.' support horizontally and vertically against the MasshlÄepge ^ teli _v :: '- Machine according to claim 1 to 3 characterized -U n 5 'j that the holding devices "(55) VQN © faemKraftailtrleb brought in. Support position. (50) ₀ w © gestures Molding machine according to claim 1 to. 3 - "as well as. 5" nd 6 4aänrc! S; -gefcenxt · * shows that the "holding device lengths (55). from a .Schauke-l ·. ;; ('52). exist, on which the .Kraftantrieb- (50) ■ attacks'wid from one ;. Rocker arm (53) with horizontal and vertical one in the swing (5.2). is rotatably mounted «.