US3568754A - Centering apparatus for match plates arranged at a match plate support for molding machines - Google Patents

Centering apparatus for match plates arranged at a match plate support for molding machines Download PDF

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Publication number
US3568754A
US3568754A US775614A US3568754DA US3568754A US 3568754 A US3568754 A US 3568754A US 775614 A US775614 A US 775614A US 3568754D A US3568754D A US 3568754DA US 3568754 A US3568754 A US 3568754A
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United States
Prior art keywords
match plate
plate support
match
impact
centering
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Expired - Lifetime
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US775614A
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English (en)
Inventor
Werner Geiger
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Inventio AG
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Inventio AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/04—Pattern plates

Definitions

  • match plate support In order to render possible the exchange of the match plates or molding machines these match plates are inserted into a match plate support secured to the molding machine table by means of screws or clamps. The molding box or flask is then secured upon the match plate support.
  • This match plate support generally consists of a metallic pot or dishlike member possessing in plan view a substantially rectangular configuration into which there are displaced from above the pattern or match plates. Since, in order to carry out such displacement a certain lateral play must be available, and, on the other hand, match plates of different plate thicknesses come into use, there is required for the exact alignment of the subsequently joined together mold parts or portions a horizontal and vertical centering of the match plates at the support.
  • the match plate In order to perform the centering operation in the horizontal plane, the match plate is pressed, for instance, against two inner walls of the match plate support which are disposed perpendicular to one another and are exactly machined.
  • match plate support For vertical centering setbolts or headbolts passed, for instance, through the match plates are threaded in an exactly predetermined position into the support floor or base and then the match plate is brought to bear upon the bolt heads.
  • the match or pattern plate is displaced by means of wedges and fixedly clamped.
  • the horizontal displacement wedges are driven between the match plate and the walls of the match plate support which are situated opposite the machined walls.
  • Vertical displacement takes place by means of pairs of oppositely directed wedges arranged upon the support floor or bottom and which can be externally adjusted by means of screws.
  • This known centering apparatus possesses a number of drawbacks. Many times the match plate is bent during driving in of the wedges. Furthermore, a great deal of time is required for the removal and reinsertion of the wedges during exchange of the match plates.
  • Another, more specific object of the present invention relates to the provision of an improved centering apparatus by means of which it is possible to shorten the time required for the exchange of a match or pattern plate and therefore reduce the standstill or downtime of the molding machine.
  • the inventive centering apparatus is manifested by the features that pressure transmission means are provided between the match plate support and the surfaces of the match plates which are situated opposite the impact surfaces, such pressure transmission means being operatively connectable via connection coupling means to supply means for pneumatic or hydraulic energy.
  • FIG. 1 is a sectional view taken substantially along the line A-A of FIG. 2, through a match plate support equipped with a first embodiment of inventive match plate-centering apparatus:
  • FIG. 2 is a plan view of the arrangement shown in FIG. 1;
  • FIG. 3 illustrates the application of the centering apparatus of FIG 1 at a match plate support for four match plates
  • FIG. 4 illustrates a second embodiment of inventive centering apparatus
  • FIG. 5 shows the details of a piston-cylinder unit used in the modified arrangement of FIG. 4.
  • FIG. 1 represents a sectional view taken substantially along the line AA of FIG. 2.
  • reference numeral 1 designates a substantially pot-shaped match plate support means which incorporates four walls 1.1, 1.2, 1.3, 1.4, a bottom or base 1.5 and at its open side a flange 1.6 possessing an exactly machined surface 1.61.
  • a molding box 2 is mounted upon the flange 1.6 and centered by means of box-guide pins or dowels 3.
  • match plate support 1 arranged with lateral play in the match plate support 1, as viewed from the bottom towards the top there are a fluid-operated e.g. pneumatic piston-cylinder unit 4, a spacer plate 5, a heating plate 6, and a match plate 7 equipped with a pattern 7.7.
  • the match plate 7 possesses the side surfaces 7.1, 7.2, 7.3, 7.4, and the lower and upper plate surfaces 7.5 and 7.6 respectively.
  • the surfaces 7.1, 7.2, and 7.6 are constructed as impact or stop surfaces
  • the attachment means for securing the match plate support 1 to the molding machine table have been conveniently omitted.
  • the walls 1.1 and 1.2 of the match plate support I possess exactly machined surfaces 1.11 and 1.21 at their upper region. Grooves or channels 1.31 and 1.41 are milled or otherwise machined into the oppositely situated walls 1.3 and 1.4 at the height of the match plate 7 and a flexible member, for example a rubber hose 8 is inserted in such grooves.
  • a through passage aperture or opening 1.22 which communicates with the groove 1.31 and into which there is threaded a connecting coupling 9 attached with the rubber hose 8.
  • each of the setbolts 10 consists of a bolt head 10.1, a threaded portion 10.2 which is completely threaded into the bottom or floor 1.5 of the support 1, and a shaft portion 10.3, the length of which is exactly equal to the spacing between the bottom or floor surface 1.51 and the flange surface 1.61.
  • Reference numeral 11 designates two further setbolts which are threaded into the bottom 1.5 of the match plate support 1, but which, however, only piercingly extend through the piston-cylinder unit 4 with their bolt heads 11.1 being received in suitable recesses 4.1 of this pistoncylinder unit 4.
  • These setbolts or headbolts 11 limit the piston stroke of the piston-cylinder unit 4.
  • the latter consists of a cylinder portion 4.2 in which there are provided five similar cylinder bores 4.3. These five cylinder bores 4.3 are in flow communication with one another through the agency of the conduit bores 4.4 which are arranged in a substantially horizontal plane. Furthen'nore, these five cylinder bores 4.3 can be operatively connected with a suitable pneumatic 'or hydraulic source of energy 101 (FIG. 1), by means of a connection coupling 12 which is threaded into a further bore 4.5 communicating with the conduit bores 4.4. Additionally, piston members 4.6 are arranged in the cylinder bores 4.3 and equipped with the sealing rings 13.
  • connection couplings 9 and 12 are operatively connected with the fluid energy sources 100 and 101, respectively.
  • the flexible rubber hose 8 expands and presses the match plate 7 with its impact surfaces 7.1 and 7.2 against both of the machined wall surfaces 1.11 and 1.21, respectively, of the match plate support 1, whereby such match plate 7 is centered in the horizontal plane.
  • the piston-cylinder unit 4 is actuated which, in turn, presses the plates 5, 6, and 7 upwardly until the match plate 7 comes to bear by means of its impact surface 7 .6 at the bolt heads 10.1, and therefore the match plate is also centered in the vertical directiOnThe-entire centering operation occurs in an extremely short period of time, no complicated manipulations being required.
  • the positive pressure is removed from the rubber hose 8 and the piston-cylinder unit 4 and then the headbolts 10 are threadably detached.
  • the modified arrangement of centering apparatus depicted in FIG. 3 differs from that shown in the embodiment of FIGS. 1 and 2 insofar as, in this instance, four match plates 14, 15, 16, and 17 are provided at the match plate support 1, and furthermore, such match plate support is equipped with the partition walls 1.6, 1.7, 1.8, and 1.9 which are exactly machined or worked at both surfaces thereof. Additionally, in this variant construction all four walls 1.1, 1.2, 1.3, and 1.4 of the match plate support I possess grooves or channels 1.13, 1.23, 1.33, and 1.43, respectively, at the height of the match plates 14, 15, 16, and 17, respectively. The flexible hose 8 is inserted in these grooves 1.13, 1.23, 1.33, and 1.43. During centering of the match plates 14 to 17, the rubber hose 8 connected with the fluid source of energy 100 presses such match plates against the machined surfaces of the partition walls 1.6, 1.7,1.8, and 1.9.
  • each of such piston-cylinder units 18 consists of a cylinder 18.2 threaded into a wall of the match plate support 1 and secured by means of a suitable nut member 18.1.
  • Cylinder 13.2 possesses an opening 18.21 for the introduction of a pressurized fluid medium and also has a cylinder bore 18.22 in which isslidably arranged the associated piston unit 18.3.
  • This piston unit 18.3 includes a piston member or flange 18.31 which is situated within the cylinder 18.2 and equipped with a suitable sealing ring 18.4.
  • a pressure or compression spring 18.5 which strives to retract the piston unit 18.3 into the cylinder 18.2.
  • the front end of the piston unit 18.3 is located behind the wall surface of the match plate support 1.
  • a centering apparatus for match plates arranged in a match plate support of a molding machine comprising in combination:
  • pressure transmission means adapted to be operatively connected with fluid energy-supply means, said pressure transmission means being disposed between said match plate support and the surfaces of said match plate situated opposite said impact surfaces thereof;
  • said pressure transmission'means including hose means formed of elastic material and serving for effectuating horizontal centering of said match plate, said match plate support being provided with two substantially horizontally extending grooves which are disposed at two walls of said match plate support which are situated substantially perpendicular to one another, said hose means being arranged in said grooves, so that upon connection to said fluid energysupply means, said hose means radially expands past the plane of the associated walls of said match plate support and therefore presses said match plate with its corresponding impact surfaces against the oppositely situated walls of said match plate support which are con structed to possess said impact means for the horizontal centering operation.
  • a centering apparatus for match plates arranged in a match plate support of a molding machine comprising in combination:
  • pressure transmission means adapted to be operatively connected with fluid energy-supply means, said pressure transmission means being disposed between said match plate support and the surfaces of said match plate situated opposite said impact surfaces thereof;
  • said pressure transmission means comprising pistoncylinder units for horizontally centering said match plate
  • said match plate support being provided at approximately the height of said match plate at two walls thereof which are disposed substantially perpendicular with one another with recess means for receiving said piston-cylinder units, .whereby when said piston-cylinder units are connected with said fluid energy-supply means the piston portion of each such piston-cylinder units extends past the plane or the associated wall of said match plate support and therefore presses the match plate against the opposite walls of said match plate support which are constructed to possess said impact means for the horizontal centering operation.
  • piston-cylinder units comprise two piston-cylinder units arranged in substantially spaced relationship from one another at one of said two perpendicularly extending walls of said match plate support and one further piston-cylinder unit at the other wall thereof.
  • a centering apparatus for match plates arranged in a match plate support of a molding machine comprising in combination:
  • pressure transmission means adapted to be operatively connected with fluid energy-supply means, said pressure transmission means being disposed between said match plate support and the surfaces of said match plate situated opposite said impact surfaces thereof;
  • said pressure transmission means incorporating a pistoncylinder unit for effectuating the vertical centering of said match plate, said piston-cylinder unit including a substantially plate-shaped cylinder portion possessing a number of cylinder bores, means defining a plurality of pressurized fluid medium conducting channels for operatively interconnecting said cylinder bores with one another, a
  • intermediate plate means disposed between said cylinder portion and said match plate, said cylinder portion acting upon said match plate through the agency of said intermediate plates, and headbolt means defining said impact means for the verticalcentering operation piercingly extending through said match plate, said intermediate plates and said cylinder portion being threadably connected with said bottom of said match plate support, whereby upon operable connection of said pressure transmission means with said fluid energy-storage means, said match plate is pressed with its impact surface operable for vertical centering against the heads of said headbolts.
  • a centering apparatus for horizontal and vertical centering of match plates arranged in a match plate support of a molding machine comprising in combination:
  • pressure transmission means being disposed between said match plate support and the surfaces of said match plate situated opposite said impact surfaces thereof, said pressure transmission means including a first pressure transmission unit for eifectuating horizontal centering of the match plate and a second pressure transmission unit for effectuating vertical centerin of said match plate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Jigs For Machine Tools (AREA)
US775614A 1967-11-17 1968-11-14 Centering apparatus for match plates arranged at a match plate support for molding machines Expired - Lifetime US3568754A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1616567A CH456856A (de) 1967-11-17 1967-11-17 Zentriereinrichtung für in einem Modellplattenträger angeordnete Modellplatten für Giessereiformmaschinen

Publications (1)

Publication Number Publication Date
US3568754A true US3568754A (en) 1971-03-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
US775614A Expired - Lifetime US3568754A (en) 1967-11-17 1968-11-14 Centering apparatus for match plates arranged at a match plate support for molding machines

Country Status (11)

Country Link
US (1) US3568754A (de)
AT (1) AT282841B (de)
BE (1) BE723845A (de)
CH (1) CH456856A (de)
DE (1) DE1808493B2 (de)
ES (1) ES360403A1 (de)
FI (1) FI48897C (de)
FR (1) FR1591850A (de)
GB (1) GB1220639A (de)
NL (1) NL141408B (de)
SE (1) SE339863B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700226A (en) * 1970-09-24 1972-10-24 Sylvania Electric Prod Pressurized universal holding device
US3730253A (en) * 1970-05-15 1973-05-01 E Buhrer Pattern device for foundry molds
US4002046A (en) * 1974-10-23 1977-01-11 Imperial Chemical Industries Limited Textile printing apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110802217A (zh) * 2019-12-06 2020-02-18 合肥集知匠心科技发展有限公司 一种铸造件铸造成型后卸砂处理方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1626225A (en) * 1925-07-20 1927-04-26 Donald J Campbell Molding apparatus
US2544499A (en) * 1950-06-10 1951-03-06 Selden P Hovey Combined frame squaring and nailing machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1626225A (en) * 1925-07-20 1927-04-26 Donald J Campbell Molding apparatus
US2544499A (en) * 1950-06-10 1951-03-06 Selden P Hovey Combined frame squaring and nailing machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730253A (en) * 1970-05-15 1973-05-01 E Buhrer Pattern device for foundry molds
US3700226A (en) * 1970-09-24 1972-10-24 Sylvania Electric Prod Pressurized universal holding device
US4002046A (en) * 1974-10-23 1977-01-11 Imperial Chemical Industries Limited Textile printing apparatus

Also Published As

Publication number Publication date
SE339863B (de) 1971-10-25
GB1220639A (en) 1971-01-27
DE1808493B2 (de) 1971-09-02
BE723845A (de) 1969-05-14
AT282841B (de) 1970-07-10
CH456856A (de) 1968-05-31
ES360403A1 (es) 1970-07-01
FI48897B (de) 1974-10-31
DE1808493A1 (de) 1969-06-12
FI48897C (fi) 1975-02-10
FR1591850A (de) 1970-05-04
NL141408B (nl) 1974-03-15
NL6816342A (de) 1969-05-20

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