DE1823935U - FOOD HANDLING EQUIPMENT. - Google Patents

Description

The Hobart Manufacturing Company, 711 Pennsylvania Avenue, Troy / Ohio (USA). ------------------------ Food processing device. Priority: from October 2, 1959 in the USA under the number 843.993 The invention relates to cutting machines, in particular food cutting machines with motor-driven carriages; in particular, the invention relates to an improved carriage structure which is particularly adapted to such motorized drive.

Cutting machines capable of automatic or semi-automatic operation generally use gravity feed of the material to the knife blade. In such an arrangement, the rotating knife blade is mounted in one plane, which extends at an angle from the vertical, usually in one Angle of about 450 from the vertical, while the carriage in cross-sectional shape a V can be formed, the front and rear walls of which are on the car floor meet and extend generally at right angles to the plane of the knife. Of course, it is not necessary that the carriage be at right angles to the cutting plane extends, but this is the most common arrangement. The angle at which the Material is in the wagon is therefore sufficient to cause the material to be slide down towards the cutting plane.

If an abutment wall is provided in front of the knife, the material slides in contact with this system wall when the car is on his backward stroke is withdrawn from the knife blade while when the carriage is on its cutting stroke is moved forward, the end of the material comes into engagement with the knife, and one Slice of material whose thickness is adjusted by adjusting the stop wall or plate is determined with respect to the cutting plane, the material is cut off.

In order to achieve the highest possible cutting capacity, extends the angle of the rear wall of the car, d. H. the wall closest to the knife lies when the carriage is in its full forward or full reverse position, in a range of substantially less than 45 with respect to the plane of motion the end of the floor or the edge of the car. This allows the material to be safely in the cart to lie and to use the knife diameter in the best possible way, while the gravity supply is still ensured.

The front wall of the cart in turn extends by a substantial amount larger angle with respect to the plane of movement of the carriage, because on this wall the Cutting pressure is applied. In other words, the front wall acts as a support of the material when it is gripped by the knife. As from the explanations above is shown, the best results are obtained with those arranged as described above Wagon walls, but with a motorized drive for the reciprocating movement of the Carriage and with a carriage to-and-fro movement of, for example, over 50 times per minute causes the inertia effect on the material lying free in the carriage at the moment when the end of the cutting stroke is reached and the carriage moves abruptly backwards, to roll the material up on the rear wall of the car, what counteracts the power tracking and what possibly causes the material thrown out of the car over the upper end of the rear wall of the car will. Clamping the material inside the cart is not a satisfactory solution in this case, because this in turn provides the appropriate gravity tracking of the material is disturbed.

Accordingly, it is a basic purpose of the invention to provide a Cutting machine with motorized carriage for the in slices to create material to be cut and insert a stop piece that extends from the rear wall of the car and extends to the front wall of the car or from this onwards it is adjustable to allow a substantial movement of the material upwards Direction of the surface of the rear wall when reversing the carriage, in particular at the transition from the cutting process to the backward stroke of the carriage, and without gravity tracking of the material to the abutment wall or plate and the cutting mechanism.

Another purpose of the invention is to provide such a cutting machine to create in which a plurality of such stop pieces at an adjustable distance are attached to each other in order to carry more than one piece of material on the cart and to track to the cutting knife.

In addition, in many cases it may be desirable to have a additional carriage movement beyond the limits of the motorized drive mechanism and provision for a quick release of the drive connection to create with the carriage, which allows the carriage by hand over an extended range of motion can be operated. While a number of facilities are provided for this purpose are, for the most part, they are very cumbersome and difficult, both in Making than in entertainment.

Accordingly, it is a further purpose of the invention to provide a motorized To create a drive mechanism for the carriage of a cutting machine, which is a very has simple and cheap construction, uses a minimum of moving parts and therefore easy to assemble and maintain.

Another purpose of the invention is to provide such a motor To provide drive mechanism for the carriage of a cutting machine in which the acceleration and deceleration values when changing the direction of the carriage movement are controlled so that the effect of inertial forces on the material on the Car is reduced.

Another purpose of the invention is to be used in conjunction with one to create a speed control for such a motorized drive mechanism, by which the speed of the carriage drive can be changed without the To change the rotational speed of the cutting knife.

An additional purpose of the invention is to provide a motor drive for a cutting machine trolley that has easy-to-operate control devices contains, which allow the operating staff to quickly switch the motorized drive and easy to turn on or off.

Other purposes, advantages and features of the invention will become apparent from the following description with reference to the drawings. In the drawings: FIG. 1 shows a perspective illustration of a cutting machine which is equipped with the measures according to the invention; Figure 2 is an enlarged front elevational view of the cutting machine of Figure 1 with part of the cover broken away to reveal details of the drive mechanism for the carriage, again shown partly in section and partly in elevation; Fig. 3 is a partial view of part of the drive mechanism of Fig. 2 in which the parts thereof are moved into the engaged position; Figure 4 is a view in inward and downward directions from the top edge of the carriage as shown in Figure 1 showing an additional stop in place on the carriage; Fig. 4; Fig. 6 is a partial view in the downward direction on the Car according to Fig. 4, which is partially broken off to to show the connection between the adjustable stoppers and the mounting rail; Fig. 7 is a somewhat schematic, upward view from the bottom of the cutting machine of Fig. 2 showing the location of the drive mechanism for the carriage; 8 is a partial section along line 8-8 in FIG. 7, showing a drive arm in a moving position; FIG. 9 is an enlarged partial section along line 9-9 in FIG. 8; FIG. 10 is a bottom view of the drive mechanism, in particular according to FIG. 8, which explains the speed setting device for the carriage, and FIG. 11 is an enlarged partial section of the setting gear along the line 11-11 of FIG. 10.

According to the drawing showing a preferred embodiment of the invention shows, the cutting machine includes a housing with a base plate 10, which with Feet 12 is provided. The upper part of the housing contains a main plate 15, which are moved via the drive mechanism for the rotating cutting knife 20 (Fig. 2) extends and serves as a support and running guide for the carriage 22, which is designed for this is, with respect to the cutting plane defined by the cutting edge of the knife 20 is to run back and forth to feed the material to be sliced to them. The carriage can preferably be substantially at right angles with respect to the Extend cutting plane, which in turn is inclined with respect to the vertical in such a way that that the material on the carriage under the action of gravity after the cutting knife to be tracked.

In front of the cutting knife 20 at the front end of the lifting movement of the carriage an abutment wall 25 is arranged. This contact plate can by actuating a Button 27 to be moved towards or away from the carriage. The button 27 has a disc 28 provided with a graduation and suitable connecting links, which are given the general reference numeral 29. This connection can for example of the type described in Applicant's U.S. Pat. No. 2,573,859 is described.

The movement of the contact plate with respect to the cutting plane sets the downward advance of the material on the carriage under the action of gravity, when the carriage moves over the forward portion of its reciprocating motion. In this way the thickness becomes that of the lowest part of the piece of material by the knife cut slice set. About the right gravity replenishment To ensure the material, this can be done by a holder 30 with projections be reinforced on its front surface, which is attached to a sleeve-like element 32 which is secured by a rod on the upper front edge of the carriage front wall 35 (Fig. 2) is worn. The construction and operation of the holder 30 are in essentially known, for example from U.S. Patent 2,573,861 and do not form part of the invention itself.

In Fig. 4, the mounting foot 36 for the car is V-shaped Rail shown receiving a mounting lug 38 extending from the underside the carriage rear wall 40 extends downward. These parts are held by a thumb screw 41 held together. As can be seen from consideration of FIG. 4, extends the front wall 35 at an angle of approximately or above 450 with respect to the path of movement of the carriage, which in the illustration of FIG. 4 during the movement of the carriage for feeding material to the cutting knife runs from left to right. The rear wall 40 preferably extends at an angle of at least 900 from the front wall 35 to provide the best snowing capacity. This wall extends therefore at an angle with respect to the feed path of travel that is substantial is smaller than the angle of the front wall 35. In a practical embodiment According to the invention, the front wall 35 extends approximately 60 ° from the path of travel, and the back wall with approximately 300th included with either wall 90 ° angle.

This arrangement of the car walls creates, as already mentioned, one best possible cutting capacity because the leading edge of the material 42 shown in Fig. 4 is shown in dash-dotted lines, relatively deep with respect to the rotating knife as it approaches it. With manual operation of the carriage, this arrangement has no particular effect on the cutting process, because the return movement of the carriage can be set up accordingly by the operator can. However, if the carriage is moved back and forth by a motor drive will, especially where it is desired, a motorized drive is as simple as possible To use the structure for cost reasons for construction and maintenance, then the slight slope of the rear wall of the car 40 can cause difficulties cause, because with a backward stroke essentially the same speed, especially during the rapid acceleration change at the end of the feed stroke and start of the return stroke of the carriage, the inertia effect on the material of this can cause them to slide or roll up the back wall (in cases round pieces of material) and even turning around in the car. This is why it is desirable to create a barrier that adversely affects the material Prevents movement within the carriage, but does not allow the gravity feed of the Material impaired.

According to the invention, a stop piece 45 is therefore provided which extends across and substantially perpendicular to the rear wall of the car Surface protrudes and is supported by an arm 47 firmly connected to it. This arm ends in a C-shaped bracket 50 which has a conical surface at one end 52 has, in complementary conical surfaces on a guide or a rail 53 takes effect. This guide or rail 53 is along the bottom of the carriage rear wall 40 and extends from the front part to the rear part. A retaining screw 54 with a knurled head 55 for easy adjustment is in the Bracket screwed in to the opposite of the interlocking conical surfaces Side of the rail 53 engages the stop in any desired Able to clamp tightly along the surface of the cart wall 30.

The stop piece 45 is also with relatively flat front and back Rear wall parts formed, as best shown in the section of the stop Fig. 6 can be seen, and the free end of the stop piece extends substantially to the lower edge of the car, as shown in FIG. Under certain circumstances it may be desirable to put more than one bread or piece of material in at the same time To cut disks, and therefore it is possible to use a plurality of such stop members as shown in Figs. The back surface of The lowest stop piece 45 'takes the place of the front wall 35 of the carriage, around the rearmost piece of material for gravity feed to the cutting knife respectively. The other parts of the second stop piece are in the same way with the same reference numbers as the stop piece 45, but with a dash, Mistake.

As can be seen from the consideration of FIG. 4, the stop pieces 45 and 45 'should be set with respect to the material on the carriage in such a way that they a small gap 57 between the front surface of each stop and release the material. Exists during most of the cutting process no direct contact between the material and the stop piece, but when The material can change the direction of the carriage, especially if it is powered by a motor slide slightly upwards on the surface of the rear wall 40 and then against each other put the stop, through which it is in this way a substantial movement on the carriage during the change of direction is prevented.

The invention also includes a novel, simplified motor Carriage drive, the devices for driving the carriage at different speeds contains, while the rotating cutting knife at the same speed, is preferably driven by a common drive motor.

According to Fig. 2, the knife 20 is mounted on a shaft 60 which rotates in bearings 62 and is controlled by a worm wheel attached to its lower end 64 is driven, which itself by one on the output shaft 66 of the not shown and a worm mounted on a motor disposed within the upper case 15 will. The worm drive 65 also engages in a worm wheel 70 (FIGS. 2, 8 and 9) which is mounted on the upper end of a drive input shaft 72. These The shaft is held in the bearing 73 within a sleeve 74. This sleeve 74 is screwed onto a drive sub-assembly 75, which in turn is connected to the underside of the Housing 15 is screwed. The lower end of the shaft 72 has a pair of it trained pinions, of which the upper pinion 76 is larger and the lower Pinion 77 is smaller. The lower end of this shaft is with a gear 78 firmly connected to a conventional gear pump, which has a second gear 79 in has a cavity 80, which is at the bottom of the drive sub-assembly by a cover 82 is formed. The outlet of this pump runs through a pipe 85 which is extends up to the worm wheel 70 and immediately below this in the way ends up being that when the shaft rotates, lubricant is pumped out of the pipe 85 and against the worm wheel 70 is sprayed and thereby also carried onto the input worm 65 is to lubricate this and also the drive worm gear 64 for the knife. The interior of the subgroup 75 represents a tub in which the lubricant, for example Oil, is held and the input to the pump via suitable, not shown Channels is connected.

A sub-shaft 90 is at its lower end by means of a pin 93 fixedly connected to an output crank 92 and extends upwards in the Subgroup 75 parallel and spaced from input shaft 72. Preferably is the shaft just above the ground and just below a needle bearing 95 surrounded by a seal 94 (FIG. 11). A first output gear 97 is free rotatably supported on shaft 90 and rests on snap ring 98. Immediately Above this gear is another snap ring 99 on which a second output gear 100 rests, which is also arranged freely rotatable on the auxiliary shaft 90.

Each of these gears contains a groove 101 and 102, respectively, and a movable key 105 is slidably received in a slot 106. taken, which extends in the upper end of the auxiliary shaft 90. Of the Wedge is normally urged outwardly by spring 108 to engage one or other of the grooves 101 and 102, respectively, and moves over the inner edge of snap ring 44 causing it to spring into the grooves. The axial movement of the wedge in slot 106 is brought about by a collar 110, to which one end of the wedge is rotatably attached, and in which, in turn, nozzles 112 on the opposite ends of a shift fork 115 engage. This shift fork 115 is in turn wedged on a shaft 117 which extends over the top of the output gears. One end of the shaft 117 carries an arm 120 to which the switch pin 122 is attached. This pin carries a collar 123 which is fastened to it and which holds one end of a spring 24, the other end of which is hung over the end of the transverse shaft 117.

The switch pin 122 extends forward through the mounting plate of the machine and stands in front of its front wall and ends in an actuating button 125 outside the front of the mounting plate. In this way the spring pulls 124 normally the switching mechanism in one direction to the wedge 105 in the Insert keyway 101, which sets the output gears 77, 97 for the lower speed are connected to the crank 92. If then the operator presses the button 125 pulls out and down, the key 105 jumps over into the keyway 102 and the. Drive runs through the connection of higher speed, namely the gears 76, 100. In this position, the switching pin 177 can, for example, be inserted into a groove, not shown, in the edge of the mounting plate 10 through which it extends, be held. The operator can then increase the speed of the vehicle again by lifting the button 125 to release the rod 122, the then into its low car speed position by spring 124 is withdrawn.

The output crank 92 therefore continues to rotate when the cutting machine is in operation at one of the two possible speeds as it passes through the actuation of the switch pin is set. This crank is rotatable over a pin 130 connected to a connecting pusher or handlebar 132, which in turn rotatable via a pin 134 at its other end to the driven end of a the swing arm 135 driving the car is attached. That arm is on a shaft 137 attached, which is mounted in bearings 138 on the transmission subassembly 75. That other end of the arm 135 extends into the path of travel of the carriage and has a : downwardly extending sleeve 140 attached to it. Within The sleeve 140 is mounted on a pin 142 with a groove 143 which is the end of a grub screw 144 receives, which is screwed into the sleeve wall. The top end of the pin 142 carries a roller 145, preferably made of polyamide material (nylon) or similar, relatively hard plastic material that has a beveled 146 has. Usually the pin is supported by a spring 148 below its lower one The end pressed into the upper position, as shown essentially in FIG is, but it is capable of counteracting the action of the spring by exerting pressure to be pressed down on the beveled surface 146.

The rotational movement of the output crank 92 therefore causes a back and forth Reciprocation on drive arm 135, and the geometry of the system causes the roller 145 to describe an arch, the end positions of which are indicated by the dash-dotted line Lines 150 are shown in FIG. As it passes through this arc, it moves At the same time, roll sideways with respect to the linear path of movement of the carriage. The limits of this movement are shown in full and dashed lines of the role shown in FIG.

The mounting foot or carriage support trough 36 extends around the Outside of the housing part 15, which covers the control for the abutment plate, as shown in particular in Fig. 2 and then inward via an opening 52 on the side of the housing and ends in a horizontally extending carriage bearing 155, which is mounted on a carriage guide rod 160. This rod extends extends over the entire housing and is at their opposite ends by appropriate Established facilities, for example as shown schematically at 161 in FIG are.

Another rod 162 extends parallel to rod 160 and carries a sliding bush 163 that connects to the carriage base via an adjustable connector 164, as shown in detail in U.S. Patent 2,573,861 is. A handle 165 is mounted on the foot and extends from the front wall 35 of the car to its manual operation upwards.

In particular according to FIGS. 2 and 3, the carriage base contains a detachable one Connection for engagement with drive roller 145.

This connection is created by a fixed socket 170, which is attached to the base of the car and receives a vertically sliding pin 172, which has a central undercut part 173 (Fig. 3). A stop pin 174 extends through the wall of the socket 170 into the surface the undercut to limit the vertical movement of the slide pin 172.

At its lower end, the pin 172 carries a head piece 175 with it a transversely extending channel 176 in its lower surface with sufficient Width to accommodate roll 145.

This head piece is usually pulled up where it is above that plane lies in which the roller 145, as shown in FIG. 2, moves. The tensile force is applied by a spring 178 attached to its opposite Ends at a fixed point on the car base and on the head part 175 is attached.

An insert lever 180 is rotatably mounted on the carrier trough at 182 and extends with its inward end into a slot in the upper part of the slide pin 172. The end of the lever 180 has a groove 183 through which a pin 184 extends extends to a drive connection between the lever and the head piece supporting Create pin 172. The other end of the lever 180 is connected to a hand lever 185 provided at its end. Slightly inward of this toward pivot point 182 is a laterally extending bolt 187 is provided. Generally above this latch and the handle part 185 is an actuating tab in the form of an angle lever 190 rotatably mounted at 192 on the support trough near the carriage store and has an essentially vertically extending actuating or handle part 193 on. The other end of the bell crank is provided with a hook-like projection 195 provided that engages behind the latch 187 when the lever 180 opposes is pivoted clockwise according to FIGS. 2 and 3 in order to lower the head piece 175.

The motor drive can then engage with the carriage as follows to be brought. Assuming that the engine is off and the knife and the drive arm 135 stand still, the operator pushes the handle part 185 of the lever 180 upwards, and this guides the pin 172 carrying the head part against the action of the spring 178 downwards. The locking angle lever 190 falls clockwise by its gravity around its fulcrum, so that the hook part 195 engages behind the latch 187 to put the parts in the engaged position, as shown in Fig. 3 to hold. The operator can then use the trolley handle Take hold of the car and drive the car back and forth until the one that leads down Head piece 175 comes into engagement with the roller 145, which itself initially under the Head piece evades due to its beveled edge 146 and the spring tension 148, to then jump into the transverse slot or channel 176. The operator can then with the automatic cutting mode by actuating switch 198 (Fig. 1) start, which energizes the drive motor in the usual way to the cutting knife to rotate and drive arm 135 via the drive connections described above to swing back and forth.

When moving within the limits of their arching motion it rolls the roller 145 back and forth within the head slot 176 as by comparison the fully extended and dashed representations in FIG. 7 can be seen and guides the carriage on the straight path as defined by the support rod 160 along which the foot 36 slides.

By attaching the head channel 176 as part of the carriage bearing that moves in a linear direction and by attaching the roller 145 to movement in an arc the drive arm 145, becomes the geometry of the carriage drive system so that the deceleration and subsequent acceleration of the carriage becomes proportional to the linear velocity of the roller multiplied by the cosine of its angular position with respect to the direction of movement of the carriage.

The speed of the reciprocating motion of the carriage can be adjusted by suitable actuation of the switching pin 122 between fast and slow position change. At the end of the feeding or cutting stroke, if the carriage has one subject to relatively strong deceleration and the material to be cut due to the inertia forces endeavors to dissipate via the rear wall 40, it is gripped by the abutment piece 45, which is usually a slight Distance from it is to avoid any impairment of the gravity tracking of the Material in the downward direction of the car to avoid and the material will so kept in its correct position for backward movement on the cart. if the car, in turn, undergoes a relatively sharp change in direction at the end of the backward stroke is subject, the inertial forces are such that they the material 42 after Move the cart wall 35, and the material will then slide down the cart and with the selected surfaces of the carriage wall, as shown in Fig. 4, in contact, until its lower end touches the contact plate 25 when the carriage is over his Infeed stroke moved to push the material behind the rotating knife.

If it is desired to operate the cart by hand, an extended Stroke can be achieved because the limits of arm 135 have less carriage movement than cause the full length of the rod 160 (see Fig. 7). In a preferred Embodiment, the operator has only the handle part 193 of the locking angle lever to operate to thereby disengage the hook portion 195 from the latch 187 bring, and the spring 178 pulls the head piece 175 in its raised position and interrupts the drive connection. After switching on the drive motor again the drive arm 135 and the roller 145 run only freely below the carriage foot, while the latter can be operated by the handle 165.

The device shown and described is only a preferred one Embodiment of the invention. It is easily possible on this device Make changes and modifications that are within the scope of the inventive concept.

Claims (7)

Protection claimsclie 1. Cutting machine with motor-driven, rotating Cutting knife and one for movement in a linear path behind the cutting knife Carriage attached past for conveying the material to be cut behind the cutting edge the knife over, characterized by a pivotable drive arm, which is driven in reciprocating motion by a motor and with its one End to a movement over an arcuate path in the neighborhood of the rectilinear one Is arranged way of the carriage movement and by a separately operable clutch for connecting this one end of the drive arms to the carriage, the facilities to the. Conversion of the arcuate movement of this one end of the drive arm in a linear motion of the carriage. 2. Cutting machine according to claim 1, characterized in that the Coupling includes a first and a second drive member, one of which is arranged on one end of the drive arm and the other is from the Car extends out, and that one of these drive members is a roller while the other of these drive members is one extending transversely to the movement of the carriage Head member is and has sufficient length to the role during a whole Keep the arm arching in its area. 3. Cutting machine according to claim 2, characterized in that on a roller is carried at one end of the drive arm and a head member is movable is attached to the car and itself across the direction of movement of the carriage for engagement with the roller during an entire arcuate movement this arm extends and that the attachment means for the head member to it are designed, it is separated for drive engagement or disengaged position of adjust the role. 4. Cutting machine according to one of the preceding claims, characterized characterized in that a speed changing device is provided to the Back and forth movement of the drive arm while maintaining the constant speed of rotation of the knife. 5. Cutting machine according to one of the preceding claims, characterized characterized in that the knife for revolving in a cutting plane in a predetermined Angle with respect to the vertical is arranged so that the carriage is forward and has a rear wall opposite the gravity feed knife of the material are inclined towards the knife, and with the forward wall of the Dare is at an angle significantly above 450 with respect to the path of movement of the cart extends, while the rear wall of the cart extends at an angle substantially below 450 with respect to the path of travel of the carriage. 6. Cutting machine according to claim 5, characterized in that a movable stop device is provided, which is located above the surface the rear layer wall extends and for adjustment on the front car wall to or from this is attached and that this stop device as a stopping member adjustable according to the thickness of the material to be cut and to prevent it substantial movement of the material in the upward direction of the rear wall of the car Reason for abrupt changes in the direction of carriage movement when transitioning from a forward stroke is designed for a backward stroke of the carriage. 7. Cutting machine according to claim 6, characterized in that a A plurality of such stop members are provided and each longitudinally independent of one another the rear wall of the car are adjustable.