A feeding device for vegetable cutting machines

Abstract: An improvement in vegetable cutting machines of the kind comprising a cylindrical feeder (1) which includes a vertically upstanding cylindrical tube (2) and a vegetable press-feed device (3) in the form of a plate (4) which extends perpendicular to the longitudinal axis of the tube (2) and which is linearly movable relative to the tube (2) wherein the plate (4) is carried by a stand arm unit placed parallel with the tube (2) and including an upper stand arm (6) having a downwardly projecting shaft (7), wherein the shaft coacts with a tubular part (8) on a lower stand arm (9), thereby enabling the plate (4) to be swung away from the top orifice of the tube (2) and enable vegetables to be inserted into the tube (2) for disintegration in the machine, and wherein a cutting tool comprising a disc provided with one or more knives is mounted in the vicinity of the bottom orifice of the tube (2). The improvements characterized in that the wall of the lower arm (9) is perforated with an L-shaped slot (12) having a part which extends parallel to the longitudinal axis of the stand arm-unit and which terminated at the upper end (13) of the lower arm (9); in that the shaft (7) of the upper arm (6) is provided with an outwardly projecting peg (14) intended for coaction with the slot (12); in that the upper arm (6) is provided with an outwardly projecting wing (15) or the like which functions to restrict rotational movement of the upper arm (6) to a first position through coaction with a stop (16) ; in that the stop (16) can be moved against the action of a spring force such as to enable the upper arm (6) to be rotated to a second position past the first position, in which second position the peg (14) is positioned so as to be able to run in that part of the L-shaped slot ( 12 ) which extends parallel with the longitudinal axis of the stand arm-unit.

Description: The present invention relates to vegetable cutting machines according to the preamble of claim 1. Vegetable cutting machines are used in large kitchens and restaurants to disintegrate green vegetables and root vegetables, hereinafter referred to collectively as vegetables. One such machine is described in US-A-3,468,355. This known machine comprises a cylindrical feeding unit which includes a vertically upright cylindrical tube and a vegetable press-feed device in the form of a plate which extends perpendicular to the longitudinal axis of the tube. The plate can be moved linearly in the tube, either manually or mechanically with the aid of drive means. The plate can be swung away from the top orifice of the tube, so as to enable vegetables or vegetables to be inserted into the tube for disintegration in the machine. A cutting tool including a cutting disc with one or more knives is mounted adjacent the bottom orifice of the tube. When the disc rotates and a vegetable in the vegetable feeding unit is pressed down against the cutting tool by means of said press-feed device, the vegetable is disintegrated and the vegetable cuttings exit from the machine through apertures provided in the cutting tool, in the vicinity of the knives. It is necessary to remove the cylindrical feeding unit in order to clean the knife-housing of the machine. Such cylindrical feeders, however, are relatively large and therewith relatively heavy. Because of its size and shape, the cylindrical feeder is also cumbersome to handle. It is also necessary to clean the feeder regularly, which is a troublesome task, due to the configuration of the feeder. In the case of one known machine, the cylindrical tube and the vegetable press-feed device are fitted together so as always to form a unit. This cylindrical feeder, however, is heavy and awkward to handle and to clean, as before mentioned. In the case of another known machine, the vegetable press-feed device can be lifted easily from the cylindrical tube. This design, however, is very liable to result in accidents, since the personnel concerned often lift-out the entire cylindrical feeder unit and then separate the unit into two parts, namely the tube and the vegetable press-feed device, the danger here being that the tube will fall onto the feet of the person concerned. Since the tube is relatively heavy, this can result in serious injury. Consequently, it is necessary to be able to handle the cylindrical feeder as an integral unit which cannot be separated into its component parts unintentionally when removing the feeder temporarily and when carrying the feeder from one place to another. This problem is solved by means of the vegetable cutting machine according to the features of claim 1, which provides an arrangement for preventing unintentional separation of the two component parts of the cylindrical feeder. The vegetable cutting machine according to the present invention comprises a cylindrical feeder or hopper which includes a vertically upstanding cylindrical tube and a vegetable press-feed device in the form of a plate which extends perpendicularly to the longitudinal axis of the tube, wherein the plate is carried by a stand arm-unit which includes an upper stand arm in which the plate is mounted for linear movement along the longitudinal axis of the tube, the upper stand arm having a downwardly projecting shaft which is placed parallel with the tube and which coacts with a tubular part of a lower arm of said arm unit, thereby enabling the plate to be swung away from the top orifice of the tube to allow vegetables to be inserted into the tube for disintegration in the machine, wherein a cutting tool which includes a cutting disc provided with one or more knives is mounted in the vincinity of the bottom orifice of the tube, according to the present invention the machine being characterised in the provision of an L-shaped slot in the wall of the lower stand arm, said slot having a part which extends parallel with the longitudinal axis of the shaft and which terminates at the upper end of the lower stand arm; in the provision of an outwardly projecting peg on the shaft of the upper stand arm, said peg being intended to coact with said slot; in the provision on said upper stand arm of an outwardly projecting wing or the like which functions to restrict rotational movement of the upper stand arm to a first position through coaction with a stop block; in mounting the stop block for movement against a spring force such as to a enable the upper stand arm to be rotated to a second position past said first position, in which second position the peg is positioned for movement in the part of the L-shaped slot that extends parallel with the longitudinal axis of the shaft. The invention will now be described in more detail with reference to exemplifying embodiments thereof illustrated in the accompanying drawings, in which Figure 1 illustrates part of a cylindrical feeder in a locked state; Figure 2 is a top view of the feeder shown in Figure 1; Figure 3 illustrates part of a cylindrical feeder in an open position; and Figure 4 is a top view of the cylindrical feeder shown in Figure 3. Figures 1 and 2 illustrate a vegetable cutting machine in which the invention is applied. The illustrated machine comprises a cylindrical feeder 1 which includes a vertical upstanding cylindrical tube 2 and a vegetable press-feed device in the form of a plate 4 which extends perpendicular to the longitudinal axis of the tube 2 and which can move linearly in relation to the tube. The plate 4 is carried by a stand-arm unit 5 which includes an upper arm 6 having a downwardly extending shaft 7. The shaft 7 coacts with a tubular part 8 on a lower arm 9 of the arm-unit, thereby enabling the plate to be swung away from the upper orifice of the tube, so as to enable vegetables to be inserted into the tube for disintegration in the machine. The plate is shown in its extreme outwardly swung position in Figure 3. The plate can be swung from this illustrated position to a position in which the plate is concentrical with the tube 2. When the plate occupies this latter position, the plate can be moved linearly within the tube. The plate may either be moved manually or with the aid of a pneumatic piston-cylinder device. The plate is moved by means of a shaft 10 which runs in a sleeve 11 on the upper frame arm 6. Although not shown, a machine of this kind is provided adjacent the bottom orifice of the tube with a cutting tool comprising a cutting disc provided with one or more knives. In accordance with the invention, the bottom arm 9 of the arm-unit is provided with an L-shaped slot 12 which penetrates the wall of said arm. The slot has a part which extends parallel with the longitudinal axis of the stand arm-unit 6, 9 and extends out to the upper end 13 of the bottom arm 9. Mounted on the shaft 7 of the top arm 6 is an outwardly projecting peg 14 which coacts with the slot. The upper arm 6 is provided with an outwardly projecting wing 15 which is intended to limit rotary movement of the upper arm 6 to a first position, by coaction with a stop block 16. This position is shown in Figures 1 and 2. The two parts of the cylindrical feeder, namely the tube 2 and the vegetable press-feed device are herewith locked together. The stop block 16 can be moved against the action of a spring, for instance a helical spring 17, so that the wing 15 on the upper arm is able to pass over the stop block 16, thereby enabling the upper arm 6 to be rotated to a second position past said first position. In this second position, the peg 14 is located in a position in which it can run in that part of the L-shaped slot 12 which extends parallel to the longitudinal axis of the stand arm. This position is shown in Figures 3 and 4. In this position, the vegetable press-feed device can be lifted straight up so that the arm 5 will leave the lower arm 9. The L-shaped slot is configured so that, in coaction with the peg 14, the plate 4 will be positioned concentrically with the tube 2 when the upper arm 6 is rotated to an opposite position relative to the position shown in Figure 3, in which the peg 14 lies against the wall 19 of the L-shaped slot. According to one preferred embodiment, the block moves on a profiled member 18 which projects out from the inner surface of the cylindrical feeder tube 2. Thus, the cylindrical tube and the vegetable feeding device can be separated from one another very easily, while, at the same time, when combined in a working position, in which the upper stand arm has limited rotational movement between two positions, it is impossible to separate the vegetable press-feed device from the cylindrical tube by rotating said device. Although the invention has been described with reference to an exemplifying embodiment thereof, it will be understood that modifications can be made without departing from the scope defined by the claims.

Claims: A vegetable cutting machine comprising a cylindrical feeder (1) which includes a vertically upstanding cylindrical tube (2) and a vegetable press-feed device (3) in the form of a plate (4) which extends perpendicular to the longitudinal axis of the tube, wherein the plate is carried by a arm unit including an upper stand arm (6) in which the plate is mounted for linear movement along the longitudinal axis of the tube, the upper stand arm (6) having a downwardly projecting shaft (7) placed parallel with the tube, wherein said shaft coacts with a tubular part (8) on a lower stand arm (9), thereby enabling the plate (4) to be swung away from the top orifice of the tube (2) to enable vegetables to be inserted into said tube for disintegration in said machine, and wherein a cutting tool comprising a disc provided with one or more knives is mounted in the vicinity of the bottom orifice of the tube (2), the machine being characterized in that the wall of the lower stand arm (9) is perforated with an L-shaped slot (12) having a part which extends parallel to the longitudinal axis of the shaft (7) and which terminates at the upper end (13) of said lower stand arm; in that the shaft (7) or the upper stand arm (6) is provided with an outwardly projecting peg (14) intended for coaction with said slot; in that the upper arm (6) is provided with an outwardly projecting wing (15) or the like which functions to restrict rotational movement of the upper stand arm to a first position through coaction with a stop block (16) ; in that the stop block can be moved against the action of a spring force such as to enable the upper stand arm to be rotated to a second position past said first position, in which second position the peg (14) is positioned so as to be movable in that part of the L-shaped slot (12) which extends parallel with the longitudinal axis of the shaft (7). A machine according to Claim 1, characterized in that the stop block (16) runs on a profiled member (18) projecting from the outer surface of the cylindrical feeder.

Inventors: SUNDQUIST JARL, SUNDQUIST, JARL
Applicants: HAELLDE MASKINER AB, AB HAELLDE MASKINER
Application year: 1991
Main classification: B26D1
IPC codes: B26D7