DE504255C - Sand holding bar made of sheet iron with parallel rows of holes whose holes are offset from one another - Google Patents

Sand holding bar made of sheet iron with parallel rows of holes whose holes are offset from one another

Info

Publication number
DE504255C
DE504255C DEF66077D DEF0066077D DE504255C DE 504255 C DE504255 C DE 504255C DE F66077 D DEF66077 D DE F66077D DE F0066077 D DEF0066077 D DE F0066077D DE 504255 C DE504255 C DE 504255C
Authority
DE
Germany
Prior art keywords
holes
offset
holding bar
parallel rows
another
Prior art date
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
Application number
DEF66077D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RICHARD FRITZSCHE
Original Assignee
RICHARD FRITZSCHE
Publication date
Priority to DEF66077D priority Critical patent/DE504255C/en
Application granted granted Critical
Publication of DE504255C publication Critical patent/DE504255C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C21/00Flasks; Accessories therefor
    • B22C21/12Accessories
    • B22C21/14Accessories for reinforcing or securing moulding materials or cores, e.g. gaggers, chaplets, pins, bars

Description

Es sind bereits Sandhalteleisten bekannt geworden, bei welchen aus den streifenförmigen Leisten zungenartige Lappen ausgestanzt und senkrecht zur Leistenebene unter Bildung einer Lochreihe abgebogen sind. Ferner sind aus Eisenblech bestehende Sandhalteleisten in Vorschlag gebracht worden, die in gleicher Höhe angeordnete Schlitzreihen besitzen, wobei der zwischen zwei Schlitzen verbleibende Steg entweder gleichmäßig nach der einen oder wechselweise nach der anderen Seite unter Bildung von Schlaufen oder Ösen ausgebaucht ist. Ferner sind Sandhalteleisten mit gleichlaufenden Lochreihen und gegeneinander versetzten Löchern bekannt geworden.Sand retaining strips have already become known, in which from the strip-shaped Last tongue-like flaps punched out and perpendicular to the plane of the groin to form a Row of holes are bent. Sand holding strips made of sheet iron are also proposed have been brought, which have rows of slots arranged at the same height, the web remaining between two slots either evenly after one or alternately is bulged on the other side to form loops or eyelets. Further are sand retaining strips with parallel rows of holes and offset holes known.

Gegenüber diesen bekannten Einrichtungen besteht das Neue der Sandhalteleiste, welche ebenfalls gleichlauf ende Lochreihen mit gegeneinander versetzten Löchern besitzt, gemäß der Erfindung darin, daß das Blech entsprechend den Lochreihen gewellt ist.Compared to these known facilities, the new thing is the sand holding bar, which also has concurrent rows of holes with mutually offset holes, according to the Invention is that the sheet is corrugated according to the rows of holes.

Hinsichtlich der beiden erstgenannten Ausführungsformen wird bei der neuen Leiste der Vorteil erreicht, daß dieselbe wesentlich einfächer und billiger in der Herstellung ist, weil das gelochte Blech lediglich mit Wellen längs der Lochreihen versehen sein muß, was mit verhältnismäßig einfachen Werkzeugen geschehen kann, während bei den bekannten Einrichtungen das Ausbiegen der Lappen bzw. der Ösen und Schlaufen wesentlich verwickeitere Geräte erfordert.With regard to the first two embodiments mentioned, the new bar is the The advantage achieved that the same is much simpler and cheaper to manufacture because the perforated sheet must only be provided with waves along the rows of holes, which is relatively simple tools can be done, while the known facilities Bending the flaps or the eyelets and loops significantly more complex devices requires.

Im Gegensatz zu der bloß gelochten, glatten Sandhalteleiste besitzt die neue, mit Wellen versehene Leiste den Vorzug, daß einerseits durch die gewellte Form und durch die dadurch bedingte größere Fläche auch größere Reibungswiderstände geschaffen werden, während andererseits durch Ausladungen der Wellen in Verbindung mit den Löchern Stützflächen für die anliegenden Sandmassen gebildet werden, wodurch die Tragfähigkeit der Leiste erheblich gesteigert und die Bildung fester Sandkerne ermöglicht wird. Ferner wird durch die Wellenform der neuen Leiste eine größere Widerstandsfähigkeit gegen Verbiegen verliehen.In contrast to the just perforated, smooth sand holding bar, the new one has waves Have the advantage that on the one hand by the corrugated shape and by the resulting larger area also greater frictional resistance can be created, while on the other hand support surfaces for the adjacent sand masses are formed by projections of the waves in connection with the holes, which significantly increases the load-bearing capacity of the bar and the formation of solid sand cores is made possible. Furthermore, the wave shape of the new bar makes it more resilient awarded against bending.

Eine eigenartige Sandhalteleiste ist in den Abb. ι und 2 der Zeichnung in einer Ausführungsform beispielsweise dargestellt, und zwar zeigt die Abb. 1 die Seitenansicht und Abb. 2 den Querschnitt.A peculiar sand holding bar is in Figs. Ι and 2 of the drawing in one embodiment for example shown, namely Fig. 1 shows the side view and Fig. 2 shows the Cross-section.

Wie daraus zu ersehen ist, besitzt die Platte gleichlaufende Lochreihen, von denen die Löcher der einen Reihe gegenüber den Löchern der anderen versetzt sind. Das Blech ist längs der Lochreihen mit Wellen versehen, wie aus Abb. 2 zu ersehen ist.As can be seen from this, the plate has parallel rows of holes, of which the holes one row are offset from the holes in the other. The sheet metal is along the Provide rows of holes with waves, as can be seen in Fig. 2.

Claims (1)

Patentanspruch:Claim: Sandhalteleiste aus Eisenblech mit gleichlaufenden Lochreihen, deren Löcher gegeneinander versetzt sind, dadurch gekennzeichnet, daß das Blech entsprechend den Lochreihen gewellt ist.Sand holding bar made of sheet iron with parallel rows of holes, the holes against each other are offset, characterized in that the sheet is corrugated according to the rows of holes.
DEF66077D Sand holding bar made of sheet iron with parallel rows of holes whose holes are offset from one another Expired DE504255C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF66077D DE504255C (en) Sand holding bar made of sheet iron with parallel rows of holes whose holes are offset from one another

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF66077D DE504255C (en) Sand holding bar made of sheet iron with parallel rows of holes whose holes are offset from one another

Publications (1)

Publication Number Publication Date
DE504255C true DE504255C (en) 1930-08-01

Family

ID=7110359

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF66077D Expired DE504255C (en) Sand holding bar made of sheet iron with parallel rows of holes whose holes are offset from one another

Country Status (1)

Country Link
DE (1) DE504255C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569590A1 (en) * 1984-09-03 1986-03-07 Peugeot Cooling bed for moulding pieces in a foundry

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569590A1 (en) * 1984-09-03 1986-03-07 Peugeot Cooling bed for moulding pieces in a foundry

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