US3918620A

US3918620A - Device for fastening intermediary plates on a mold wall

Info

Publication number: US3918620A
Application number: US480484A
Authority: US
Inventors: Elmar Maier
Original assignee: Hilti AG
Current assignee: Hilti AG
Priority date: 1971-07-07
Filing date: 1974-06-18
Publication date: 1975-11-11
Anticipated expiration: 1992-11-11

Abstract

A device for fastening intermediary plates to the wall of a mold includes a supporting frame formed of a pair of vertically arranged arms pivotally connected together at their upper ends and a member associated with the arms for moving them away from and toward one another. Located at the lower ends of each arm is at least one setting gun and upper and lower grippers for holding a plate prior to its attachment to the mold by the gun. The setting guns are arranged in pairs with the driving direction of the guns in each pair being disposed 180* apart. A carrier is pivotally attached to the lower end of each of the arms. The guns in each pair are each rigidly attached to a different one of the carriers and the upper gripper is also rigidly attached to the carrier. The lower gripper is arranged for pivotal movement separate from the upper gripper and it is spring biased in the driving direction of the gun mounted on the arm with which it is associated. The device is supported from a lifting mechanism so that it can be lowered into and lifted out of the mold. Moreover, a remotely operable firing device is connected to the guns so that they can be fired simultaneously.

Description

United States Patent [191 Maier Nov. 11, 1975 [75] Inventor: Elmar Maier, Feldkirch-Tisis,

Austria [73] Assignee: Hilti Aktiengesellschaft, Schaan, Liechtenstein [22] Filed: June 18, 1974 [21] Appl. No.: 480,484

Related U.S. Application Data [63] Continuation-in-part of Ser. No. 267,702. June 29,

1972, Pat. No. 3,820,702.

[30] Foreign Application Priority Data July 7, 1971 Germany 2133915 [52] us. c1. .L 227/9 [51] Int. Cl. B25C 1/08 [58] Field of Search 227/9, 10

[56] References Cited UNITED STATES PATENTS 3,354,658 11/1967 Leonardi 227/9 X 3,368,730 2/1968 Bayer 227/10 X 3.682.364 8/1972 Maier 227/9 3,820,702 6/1974 Maier 227/9 Primary EranziizerGranville Y. Custer, Jr. Attorney, Agent, or Firm-Toren, McGeady and Stanger ABSTRACT A device for fastening intermediary plates to the wall of a mold includes a supporting frame formed of a pair of vertically arranged arms pivotally connected together at their upper ends and a member associated with the arms for moving them away from and toward one another. Located at the lower ends of each arm is at least one setting gun and upper and lower grippers for holding a plate prior to its attachment to the mold by the gun. The setting guns are arranged in pairs with the driving direction of the guns in each pair being disposed 180 apart. A carrier is pivotally attached to the lower end of each of the arms. The guns in each pair are each rigidly attached to a different one of the carriers and the upper gripper is also rigidly attached to the carrier. The lower gripper is arranged for pivotal movement separate from the upper gripper and it is spring biased in the driving direction of the gun mounted on the arm with which it is associated. The device is supported from a lifting mechanism so that it can be lowered into and lifted out of the mold. More over, a remotely operable firing device is connected to the guns so that they can be tired simultaneously.

8 Claims, 4 Drawing Figures US. Patent Nov. 11,1975 Sheet1of4 3,918,620

US. Patent REMUTE FIRING DEVICE Fig.2

Nov. 11, 1975 Sheet 2 of 4 REMOTE LIFTING AND UPERATIUIN MECHANISM US. Pate nt Nov. 11,1975 Sheet3of4 3,918,620

US. Patent Nov.l1, 1975 Sheet4of4 3,918,620

DEVICE FOR FASTENING INTERMEDIARY PLATES ON A MOLD WALL This is a continuation-in-part of application Ser. No. 267,702 filed June 29, 1972 now US. Pat. No. 3,820,702, issued June 28, 1974.

SUMMARY OF THE INVENTION The present invention is directed to a device including a supporting frame on which an explosive drivencharge gun is mounted for fastening intermediary plates to the wall of a mold and, more particularly, it is directed to a holder for supporting the plates prior to attaching them to the wall of the mold and to the arrangement of the setting guns in pairs for firing anchors in opposite directions for fixing the plates to the opposite walls of a mold, all at the same time.

Setting guns for fastening intermediary plates to a mold surface are known which are mounted on a supporting frame and have a holder for the plates positioned in front of the muzzle of the setting guns. The lining of a mold with the required intermediary plates takes up considerable time because, if a known gun is used, the gun must be removed from the mold after each use and introduced again into the mold for attaching the plates positioned in the holder.

As in many other steel mill operations, it is often difficult to have sufficient men available for fixing the intermediary plates to a mold. Accordingly, it is of particular importance that the operation of anchoring inter mediary plates be automated.

Therefore, it is a primary object of the invention, to line a mold with the required intermediary plates in a minimum period of time, and it is preferable if all of the plates can be secured in place at the same time.

In accordance with the present invention, one or several pairs of setting guns are mounted on a supporting frame with the guns in each pair having their driving axes in substantial alignment and with the driving directions of each gun disposed 180 apart. Further, where additional pairs of guns are arranged, the driving axes of the different pairs can be arranged parallel and/or perpendicular to one another, such as in attaching the plates to the walls of a rectangularly shaped mold.

By virtue of such an arrangement, the entire plate fastening operation can be reduced to a minimum number of steps, that is, it is possible to fix at least a major part of all the required intermediary plates on the mold wall in a single operation. If certain of the pairs of guns are arranged at right angles to the otherpairs, it is possible to secure the intermediary plates to the walls of a rectangularly shaped mold simultaneously in a single securing operation.

To ensure the easy introduction of the setting guns into the mold with the intermediary plates held in position by holders, the supporting frame is hung from a lifting mechanism for remote operation and the guns are arranged in pairs movable in the direction of their driving axes. By being able to move the guns in the direction of their driving axes, it is possible to displace the guns along a pressure path for effecting safe operation of the insertion of the anchors or bolts which attach the plates to the mold. Further, a pneumatic or hyof the guns and the device can be operated by remote control from a location spaced from the mold such as for the remote control means of the lifting mechanism.

In place of the working cylinder, the movement of the guns can be provided by the use of an electro-motor, an electro-magnet and the like which similarly can be remotely operated.

If the mold is small, pairs of guns arranged perpendicular to one another may get in one anothers way. This problem is particularly noticeable in the corners of molds where there is a lack of sufficient working space. Therefore, where the guns are located in tight quarters, it is advantageous if the guns extending perpendicularly to one another, are arranged in spaced planes which extend perpendicularly to the direction of the supporting frame. With such an arrangement, all of the holding devices can be provided with the necessary intermediary plates when the supporting device is introduced into the mold.

Initially, the supporting device is lowered, preferably from a remote control station, into the mold until the intermediary plates are in position for attachment to the mold surface and the driving directions of the guns in each pair are disposed apart. After the first group of plates are attached to the mold, if required, the supporting device can be lowered further into the mold until the plates extending perpendicularly to the first group of plates are located in positiion for attachment. Therefore, it is advantageous if each of the pairs of guns disposed in parallel relationship can be fired simultaneously.

Furthermore, if the pairs of guns disposed perpendicularly to one another are all located in the same plane, such as in attaching the intermediary plates to a large sized mold, it is advantageous if all of the guns can be fired at the same time.

To provide a vertical component for the penetration of the nail into the mold wall, the guns are tiltable in a vertical plane on the supporting frame.

Another feature of the invention is the arrangement of the gripping members which form the holders for the intermediary plates. One of the gripping members is attached to a carrier which also supports the guns while the other gripping member is pivotally mounted on the supporting frame. The gripping members are located above and below the muzzle of the setting gun and are movable toward the plane of the muzzle as the gun is arranged in the firing position. With this arrangement, it is possible to obtain a closely fitting engagement of the intermediary plates with the surface of the mold,

though the mold walls are uneven. Since the gripping members arranged above and below the guns can be moved toward the muzzle of the gun until it is in the firing position, the gun muzzle can be supported on the intermediary plate so that the pressure path required for safety reasons in firing the gun can be provided.

The various features of novelty which characterize the invention are pointed out with particularity in the claims annexedto and forming apart of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its use, reference should be had to the accompanying drawings and descriptive matter in which there is illustrated and described a preferred embodiment of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS In the drawings;

FIG. 1 is a side view of a device, embodying the present invention, for fastening intermediary plates to, the wall surfaces of a mold;

FIG. 2 is a view, of the device shown in FIG. 1, as seen in the direction of the arrow a,

FIG. 3 is a view similar to FIG. 2, on an enlarged scale, illustrating another embodiment of the invention, and

FIG. 3a is a view similar to FIG. 3 illustrating still another embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION In FIG. 1, a device or supporting frame 1 for fastening

intermediate plates

23,24 to the wall surface of mold 20, is formed of a pair of vertically extending and laterally spaced

arms

2, 3. At their upper ends, the arms are rotatably mounted about a bolt 5 positioned in 'a; shackle 4. A suspension eye 6 is secured to and exte nds upwardly from the shackle 4. Each of the arms has a pivot axis or

7,8 at its lower end and a

carrier

9,10 is mounted on each of the pivot pins. Rigidly secured to 'each of the

carriers

9,10 is an upper gripping member l2, 13 which forms a part of the

holder

14, 15 for the

intermediary plates

23,24 to be fastened to the walls of the mold 20. In addition to the upper gripping members, a setting gunl6, 17 is rigidly connected to the carrier so that it can be pivoted with the upper grippingmember about the

pivot pin

7, 8.

can be seen in FIG. 2, the arm 3 supports three setting guns 17 disposed in laterally spaced relationship. Each of the guns 17 has a corresponding gun 16 on the op posite carrier of the arm 2 forming a pair of guns arranged in the same horizontal plane with their firing directions disposed 180 apart. The number of pairs of guns associated with the supporting frame 1 canbe selected in accordance with the dimension of the mold 2 0 towhich the

intermediary plates

23, 24 are to be fastened. Furthermore, as shown in FIG. 2, the bottom gripping members arranged at the ends of the pivot pins are biased by torsion springs 21, 22 in the driving direction of the associated guns. To limit the movement of the ,

bottom gripping members

18, 19 caused by the torsion springs 21, 22 stops 30, 31 are arranged on the pivot pins 7, 8 and the bottom gripping members. 1

In FIG. l, a working cylinder 25, such as a hydraulic o r pneumatic cylinder, is pivotally connected by means of

pivot bolts

26, 27 to

flanges

28, 29 on the

arms

2, 3. The working cylinder 25 is located intermediate the endsofthe armsand can displace the arms outwardly awayfromand inwardly toward one another.

To clarify the invention as illustrated in FIGS. 1 and 2, only a portionv of the device is shown having several pairsof guns arranged in parallel with one another, that is the driving axes of the guns are arranged parallel to one another and in the same horizontal plane. However, as shownin FIG. 3 the device can be provided with two

additional arms

32, 33 for supporting

setting guns

34,35 and

plate'holders

36,37 oriented at right angles to the arrangement of the setting guns l6, l7 and plate holders 14, shown in FIGS. 1 and 2, that is for securing intermediary plates to the surfaces of the mold 20. Where two groups of setting guns are arranged with perpendicular driving axes, as shown in FIG. 3, instead of the shackle 4, a head bearing 38 is used with two vertically spaced pivot bolts 5, one for each pair of

arms

2, 3 and 32, 33. In the event the mold is of a relatively small size, it is advantageous if the setting guns having their driving axes disposed perpendicular to one another, are located in vertically spaces planes, as illustrated in FIG. 3.

FIG. 3a shows the perpendicularly arranged pairs of setting

guns

16, 17 and 34, 35 located in the same plane.

In using the device shown in FIGS. 1 and 2, initially, the guns l6, 17 are provided with explosive cartridges and fastening members, and the

intermediary plates

23, 24 are inserted into the holders l4, 15 formed by the upper gripping

members

12, 13 and the lower

gripping members

18, 19 so that, preferably, a three-point support is provided.

The lifting and operating mechanism 60, shown schematically in FIG. 2, consists of a remote control panel for controlling operation of a lifting member which is attached to the suspension eye 6 in the shackle 4. The panel also controls the operation of the working cylinder 25. By means of the lifting member, such as a conventional hoisting member, the device or supporting frame 1 can be lowered into and lifted out of the mold 20, note in FIG. 1 the device is positioned above the top of the mold ready to be lowered for attaching the

plates

23, 24. With the supporting frame located within the mold, the working cylinder can be operated from the control panel for moving the plates into position for attachment to the mold walls. The supporting frame 1 is lowered by the mechanism into the mold 20 until the

intermediary plates

23, 24 have reaches the desired location for fastening to the walls of the mold. With the plates properly positioned, the working cylinders are actuated remotely from the control panel of the mechanism and the

arms

2, 3 are moved apart for displacing the

plates

23, 24 and the guns l6, 17 toward the

mold walls

20a, 20b. As the arms move away from one another, the lower

gripping members

18, 19 are the first to contact the mold walls and, in reaction, move rearwardly toward the plane of the muzzles 16a, 17a of the guns. As the outward movement continues, the

intermediary plates

23, 24 are pressed by the upper gripping

members

12, 13 and the muzzles 16a, 17a of the guns against the mold walls. By the continued pressing of the muzzles of the guns against the intermediary plates and the further retraction of the lower gripping members, the muzzles of the guns traverse a pressure path provided for safety reasons so that the guns are in the firing position and the fastening members can be driven through the plates into the mold walls.

By means of a known remote firing device 50, shown schematically in FIG. 2, each of the guns mounted on the device 1 can be fired at the same time. The device 50 consists of a control box located at an operators station spaced from the mold and the control box is con necting over a wiring circuit to each of the guns l6, 17. Preferably, the remote firing device operates electronically. As required, individual ones of the guns can be fired or all of the guns can be fired simultaneously.

With the plates attached to the mold walls, the working cylinder 25 is reversed from the mechanism 60 and it displaces the

arms

2, 3 toward one another and withdraws the guns l6, 17 toward the center of the mold. If all of the mold plates have been attached in one operation, then the device can be removed from the mold, or if additional pairs of guns are arranged in a second plane spaced vertically from the plane of the guns initially fired, as in FIG. 3, the

second guns

34, 35 can be lowered, along with the plates to be attached, downwardly into the mold and the procedure outlined above can be repeated for completing the attachment of all the plates to the mold surface.

Where it is possible to do so, all of the plates are attached to the mold walls simultaneously, since individual fastening of the plates tends to loosen plates previously secured. If conditions do not permit simultaneous attachment of the plates, a two-step operation is employed in a rectangularly shaped mold with the plates being fastened first to one set of opposite walls and then to the other set.

While a specific embodiment of the invention has been shown and described in detail to illustrate the application of the inventive principles, it will be understood that the invention may be embodied otherwise without departing from such principles.

I claim:

1. Device for fastening intermediary plates to the walls of a mold includes a supporting frame, explosive charge-driven setting means mounted on said supporting frames for driving fastening members for anchoring the plates to the molds, and holders mounted on said supporting frame for holding the plates as they are moved into position for attachment, wherein the improvement comprises means for remotely positioning said supporting frame within the mold, said setting means includes at least a first pair of setting guns with the driving axes of said first pair of setting guns disposed in parallel relationship and the driving directions of said first guns in said pair disposed 180 apart, and means connected to said setting guns for remotely firing all of said first guns located on said support frame at the same time.

2. Device, as set forth in claim 1, wherein said setting means includes at least a second pair of setting guns with the driving axes thereof disposed in perpendicular relationship to the driving axes of said first pair of setting guns and in said second pair of setting guns the driving axes are disposed in parallel relationship and the driving directions of said second pair are disposed 180 apart.

3. Device, as set forth in claim 2, wherein said first pair of setting guns anad said second pair of setting guns have the driving axes thereof all located in the same plane.

4. Device, as set forth in claim 2, wherein the plane containing the driving axes of said first pair of guns is spaced vertically from the plane containing the driving axes of said second pair of guns.

5. Device, as set forth in claim 3, wherein said means for remotely firing said guns are arranged for firing all of said first pair and said second pair of guns mounted on said frame at the same time.

6. Device, as set forth in claim 2, wherein said means for remotely positioning said supporting frame within the mold comprises a mechanism for lifting and lowering the supporting frame into and out of the mold and a device mounted on said supporting frame for moving said setting guns toward and away from the mold walls, and remote control means connected to said lifting and lowering mechanism and to said device for moving said setting guns for remotely operating said mechanism and said device.

7. Device for fastening intermediary plates to the walls of a mold includes a supporting frame, an explosion charge-driven setting means mounted on said supporting frame for driving fastening members for anchoring the plates to the mold, and holders mounted on said supporting frame for holding the plates as they are moved into position for attachment, wherein the improvement comprises means for remotely positioning said supporting frame within the mold, said setting means includes at least a first pair of setting guns with the driving axes of said first pair of setting guns disposed in parallel relationship and the driving direction of said guns in said pair disposed apart and at least a second pair of setting guns with the driving axes thereof disposed in perpendicular relationship to the driving axes of said first pair of setting guns and the driving axes of said second pair of setting guns disposed in parallel relationship and the driving direction of said guns in said second pair disposed 180 apart, said second pair of guns disposed perpendicularly to said first pair of guns being arranged in spaced planes which planes extend perpendicularly to said supporting frame, and means connected to said guns for remotely firing all of said guns located in the same plane extending perpendicularly of said support frame at the same time. I

8. Device, as set forth in claim 7, wherein said means for remotely positioning said supporting frame within the mold comprises a lifting and lowering mechanism attached to the upper end of said supporting frame for lifting and lowering said supporting frame relative to the mold, and a device mounted on said supporting frame for moving said setting guns toward and away from the mold walls, and a control member connected to said mechanism and to said device for remotely operating said mechanism and device.

Claims

1. Device for fastening intermediary plates to the walls of a mold includes a supporting frame, explosive charge-driven setting means mounted on said supporting frames for driving fastening members for anchoring the plates to the molds, and holders mounted on said supporting frame for holding the plates as they are moved into position for attachment, wherein the improvement comprises means for remotely positioning said supporting frame within the mold, said setting means includes at least a first pair of setting guns with the driving axes of said first pair of setting guns disposed in parallel relationship and the driving directions of said first guns in said pair disposed 180* apart, and means connected to said setting guns for remotely firing all of said first guns located on said support frame at the same time.

2. Device, as set forth in claim 1, wherein said setting means includes at least a second pair of setting guns with the driving axes thereof disposed in perpendicular relationship to the driving axes of said first pair of setting guns and in said second pair of setting guns the driving axes are disposed in parallel relationship and the driving directions of said second pair are disposed 180* apart.

7. Device for fastening intermediary plates to the walls of a mold includes a supporting frame, an explosion charge-driven setting means mounted on said supporting frame for driving fastening members for anchoring the plates to the mold, and holders mounted on said supporting frame for holding the plates as they are moved into position for attachment, wherein the improvement comprises means for remotely positioning said supporting frame within the mold, said setting means includes at least a first pair of setting guns with the driving axes of said first pair of setting guns disposed in parallel relationship and the driving direction of said guns in said pair disposed 180* apart and at least a second pair of setting guns with the driving axes thereof disposed in perpendicular relationship to the driving axes of said first pair of setting guns and the driving axes of said second pair of setting guns disposed in parallel relationship and the driving direction of said guns in said second pair disposed 180* apart, said second pair of guns disposed perpendicularly to said first pair of guns being arranged in spaced planes which planes extend perpendicularly to said supporting frame, and means connected to said guns for remotely firing all of said guns located in the same plane extending perpendicularly of said support frame at The same time.