DE4416917A1 - Process-controlled ingredient dispensing system for bakery - Google Patents

Abstract

A process controlled ingredient dispensing system is housed beneath a work table. Parallel ingredient dispensers with integral dispensing screws discharge onto a central weigher with a collecting tank which moves horizontally along the ends of the dispensers. At the end of its movement the weigher is lifted and a cover in the work table is automatically opened to allow removal of the weigher tank. Pref. each dispenser contains an agitation to prevent bridging of its ingredients.

Description

The invention relates to a work table for use in the chemical industry and Food industry, especially bakery and Pastry shops.

The present invention is based on the object de, a fully automatically controlled system for Dosing of exact batch weighing, at who made the given recipes from containers be worn and on the other hand by space-saving Measures the complete discharge and weighing unit under a work or laboratory table freeze.  

The above task is carried out according to the Features of claim 1 solved according to the invention.

An embodiment of the Invention with reference to the accompanying Described drawings.

Show it:

Fig. 1 in the front view of the work table arranged discharge container with worm drive unit, motor-driven connection flaps and weighing container, which is opened on a horizontally moving cradle table on a fork, so that the container over a subsequent movement sequence in the vertical direction to the upper removal point can be moved.

Fig. 2 in the top view, the product containers are shown in parallel as opposed to the front. With integrated discharge screws and input or output gears of the screw drive motors as well as the receiving fork and collecting container and lid opening flap with hinge.

Fig. 3 shows the unit of the work table shown in side view with a pivotable lid, discharge container, motion and drive motors and the product receptacle.

Show in the drawings and in the description identical parts of the work table the same Reference signs on.

As shown in FIGS. 1 to 3, the work table according to the invention has 1 product container with integrated discharge screws ( 6 ), which can be driven and regulated either via steplessly adjustable or pole-changing electric motors ( 17 ), depending on the product dependency.

To prevent trickling product when switching off the discharge screws ( 6 ) there is an electrically operated shut-off valve below the screw outlet flange ( 18 ), the movement of which is driven by a servomotor ( 9 ) which rotates by 180 degrees on the same axis and thus rotates the opening of the screw outlet flange ( 22 ) to the product discharge is free. The disk valve drive motor ( 9 ) moves over the same axis of rotation by a further 180 degrees when the setpoint is reached. A rotating rotary movement from the "open" or "closed" position is thus achieved via a rotating rotary movement running in the same axis position and direction of movement.

The product discharge container ( 15 ) are arranged according to the invention in parallel and on the opposite end in the working table Ar.

The product discharge is carried out on the front side via the inward axis. A horizontally arranged movement unit ( 1 ) is arranged under the central axis of the work table. On the movement unit there is a weighing frame on which a collecting container ( 3 ) is loosely placed. The weighing frame ( 10 ) is aligned analogously to the shape of the container bottom, so that the container can be inserted exactly into the weighing frame. According to the prescription, the weighing frame ( 10 ) with the collecting containers ( 3 ) on it moves over the horizontal movement unit ( 1 ) into position under the selected discharge container. The corresponding servomotor ( 13 ) moves into position via the process control. The worm drive motor ( 17 ) runs in rapid run up to shortly before the setpoint specified in the recipe and regulates slowly, ie metered, until the delivery rate to be carried out is reached, in fine flow until the weight specification is reached. To counteract any bridging of difficult-to-flow products, a drive shaft ( 19 ) is inserted above the screw conveyor in the product container. It is driven by the worm drive motor with the help of gear wheels ( 4 ) and ( 5 ) and toothed belts ( 24 ). After completing the batches weighed according to the prescription, the weighing frame ( 10 ) is moved into a receiving fork ( 5 ) with the aid of the drive motor located in the horizontal movement unit ( 1 ). After adjustment and end point switch-off, the motor ( 9 ) of the vertical movement unit is moved to the upper removal point.

To open the lid ( 7 ) integrated in the worktop, a linkage with a roller on the front side is attached to the receiving fork. When the pick-up fork is raised, the collecting container above can be opened harmoniously and the lid opened at the same time.

The collecting container ( 3 ) with batch weighing controlled to the exact gram can thus be removed manually and fed to the further work process.

To fill the discharge container, the work table is equipped with a swivel-mounted worktop ( 11 ) which extends over the entire length of the work table. The product discharge containers ( 15 ) are therefore easy to fill. After completing the filling process from the container ( 15 ), the worktop ( 11 ) can be closed and further batch weighing can be carried out while working on the work table at the same time.

As already mentioned at the beginning, the Small component plant fine-grained crystalline raw substances such as flour, baking powder, cocoa, Salt, color pigments etc. fully automatically according to the given recipe management in one under the discharge Sam located horizontally to be moved be weighed. The collection container is standing on a weighing unit, which after the completion of each due weighing processes, on a transfer unit is brought into the appropriate position so that there via a vertical movement of the collection container is moved to the upper point of the work table and thus a manual removal of the collection container can be done.

Functional flow

As shown in Fig. III, the worktable has a swiveling worktop, which is provided with a limit switch (worktop open - worktop closed). The control is to be provided in such a way that 20 containers can be placed in the work table, each container ( 15 ) being provided with a discharge screw ( 6 ). The discharge screws are driven with polum switchable electric motors (2 nominal speeds) or also continuously adjustable. The coarse flow / fine flow speed control is in a speed range of 150 revolutions / m or 17 revolutions / m. The coarse / fine flow control of the worm drive motors depends on the weighing unit ( 10 ), which depends on the control of the product container ( 15 ) and the recipe to be specified. The control is for max. 20 discharge containers and thus for 20 worm drive motors with the speed control described above and min. 6 discharge containers to be provided.

Below the discharge container ( 3 ) there is a central scale integrated in the movement sled, which is horizontal with the help of a movement sled ( 1 ) which, thanks to an electric motor - 1 KW, the entire container according to the specified recipe selection (for example container 1 , 8 and 12 ) Depending on the recipe selection, the weighing carriage with the weighing container on it moves into position. The respective discharge screw with the associated drive motor is controlled via the setpoint / actual value comparison from the program. After completing the entire discharge quantities programmed according to the recipe selection, the container is moved into position, filled, conveyed and transferred to the fork of the vertical movement rail. The exact positioning, with the switch-off point of the drive motor of the horizontal movement unit, is controlled via a limit switch.

The same applies to the positioning of the weighing unit with the collecting container above for the respective positioning below the discharge snails.

After coupling to the transfer fork in position, the motor of the horizontal movement unit switches off and the motor of the vertical movement unit starts up, so that the weighing container is conveyed from the bottom up. The shutdown of the motor ( 9 ) of the horizontal movement unit is controlled by limit switches.

The economic benefits of "under the work table arranged process-controlled small component plant " lies on the one hand:

• - Use as a normal work table simultaneous weighing accurate to the gram.
• - Bilateral use even with spatial cramped workplaces.

Claims (4)

1. Process-controlled small-component system arranged under the work table, characterized in that product discharge containers with integrated discharge screws are arranged under a work table on the front and in parallel. The product is discharged onto a central scale with a collecting container, which, after preselection of the recipe, brushes the product container in the horizontal direction of movement and ensures, via process-controlled automatic weighing, the possibility of weighing to the gram while at the same time being able to work above the work table. 2. Motor-driven swivel lock in rotating rotation in the same direction Claim 1 characterized in that at Snail standstill possibly flowing Product is sealed off.   3. Lid opening mechanism according to claim 1, characterized in that when the pick-up fork ( 5 ) is raised, the lid ( 8 ) located in the worktop is opened continuously with the vertically upward collecting container for removing the same. 4. bridge resolution paddle according to claim 1, characterized in that on the container located in the discharge axis ( 19 ) with oblique to the axial direction of 80 ° attached stirring bars ( 23 ).