Device for automated monitoring of packing machine for sausage production

FIELD: food products; mechanics.

SUBSTANCE: device for automated monitoring of packing machine for sausage production is the subject of the invention. It consists of extrusion machine (F), driving pin (1), breaking unit (2) for stopping casing and clamping machine (V). Device is specific by chamber (6, 6', 6") generating electric video signal, analytical unit (7) for video signal analysing and device (8) controlled by analytical unit for disconnection of extrusion machine (F). Invention also describes method of automated monitoring of packing machines for sausage production.

EFFECT: invention allows for automatic detecting faulty operation of packing machines in sausage production.

3 cl, 2 dwg

 

The invention relates to control devices and automated packaging machines for sausage production. These machines are used for filling sausage stuffing synthetic or natural casings and linings clamps on her ends.

Packaging machines for sausage production in the sense of the invention consist of the following components:

machine-gun, which fills the stuffing into the inlet of the horn,

device for braking the sausage casing, which is located at the outlet of the horn,

machine for applying clips to the shell.

Packing with the help of these machines usually happens like this:

First an empty, closed on one side the large shell length wear to the output end of the horn syringe. Then more often shell corrugate.

- After that lead in working position, the brake device. This device creates friction, which prevents the contraction of the casing from the horn of a syringe. Without friction shell were drawn from the bobbin unevenly, to provide a uniform gasket would be difficult. Usually the brake unit consists of one or more elastic rings that cover the legs. When the shell is on the legs, thanks to the elasticity of the material of the rings it is pressed against the surface of the bobbin, so that when the withdrawal occurs neo is required friction force. In the working position, the brake device is located at the output end of the horn (cf. DE 199 53 695).

- Include sausage syringe. Minced through the stuffing horn gets in the shell. Because the shell at the output end is closed, it gradually shrinks with bobbin. The above-described braking device ensures uniformity of this process.

- A filled shell serves to a machine for applying clamps, which closes the shell parts. This can be done, for example, as follows. Machine using displacers pinched casings, then perity site impose clamps. When pinning to the matrix clips are deformed and because of this clamp shell.

The invention applies in particular to automated packaging machines for sausage production. Such machines operate continuously, that is, operations are coordinated with each other so that the individual sausages continuously Packed in a bunch or in a separate sausages.

The use of these machines constantly encounter the following problem: in order to disable packing machine, it is necessary to determine the moment when the end of the shell. In addition, the machine must be immediately switched off unintended gaps are filled and removed from the bobbin shell. To charge any person constantly SL is to monitor the machine operation unprofitable.

Therefore, to date, proposed various methods of automatic control packaging. For example, it was proposed to fix at the end of the shell, a spring-loaded alligator clip, which would have flipped the switch when starting to move the end of the shell. In addition, invented the swinging lever which is adjacent to the corrugated sheath. Once the shell is removed, it is in contact with metal legs. This contact closes the circuit and is given the appropriate signal. However, these innovations only allow you to control reaching the end of the shell, but not such failures, as the gap. Failures can be controlled using the pan grinder wheel, which is placed at the end of the bobbin. This wheel is attached to the sheath material and rotates in so far as the shell goes properly. If the wheel stops, which is determined using the sensor, it means that either has failed or reached the end of the shell (cf. EP 0755188 B1).

Thus, the known solutions either do not cover failures or use mechanical parts that require significant maintenance costs.

The objective of the invention is to provide such control, without the use of mechanical components would be controlled as failures, and the end oblock is.

In the invention this task is solved by the distinguishing signs of paragraph 1.

The camera is any system for collecting optical information. Information about two-dimensional image, the system generates in the form of an electric image signal. The "e" covers the concept of "electric".

The analytical device is a computing device that stores the image and performs the operation of comparing images.

Tripping device is an electronic device, which signal analytical device disables the machine-gun.

The analytical device and/or deactivate the device can either be integrated with the above camera with a syringe and the like, or made in the form of one or two individual components.

This device can function, for example, in accordance with the following method, implemented by the analytical device.

Method for automatic control of packaging machines for sausage production, which include:

machine-syringe

- Tarsus,

- brake device for braking casings,

- clamping machine.

The method is characterized by the following stages:

a) In the memory system initialization record initialization parameter.

<> b) using the camera, remove one of the parts of the packaging machine.

c) Captured by the camera then digitizes the image.

d) Digitized image recorded in the image memory.

e) If the memory already contains the initialization parameter, instead it writes the parameter other than the parameter initialization and start a new work cycle from step b).

e') otherwise the image that was recorded in step d), compared with the image captured at step (d) during the previous operating cycle.

f) If the comparison in step e') identify the difference between these images, the image memory occupied during the previous business cycle in stage d), release and start a new work cycle from stage b).

f') otherwise activate the tripping device, the switching-off machine-gun.

In addition or instead disable syringe according to step f) may be issued a warning signal and/or initiated by another action, such as disabling a machine for applying clips.

Part of the packaging machine, which removes the camera at the stage b), we can choose differently.

For example, the camera can capture area of the horn with a shirred casing. In this case, this region is chosen so that, when properly functioning because of the retraction sheath within n the erated in constant motion. At break coming minced already has no pressure, under which the removed shell. Moving the shell is terminated, so the comparison according to step e') the difference between the images is not installed, go to step f) and the syringe machine is turned off. When it reaches the end of the shell, the shell of the area that was selected with this setting, disappears. Successive images are similar to each other, so again there is a shift from point e') to f'). Within the initialization can also include special steps shooting bobbin without shell and save this image as a blank image. In addition, before activating the switching-off device according to the stage f') can be carried out a comparison of the blank image with the last captured image. If this comparison shows that the deviations are not available, then no, there is no gap, but only reached the end of the shell. This method allows to distinguish the gap from the end of the shell, this can be taken into account when activating other actions.

You can also remove the site with part of the shell between the legs and machine for applying clips ("field bubbles"). If the machine works properly, the shell on this site through uniform prom is eerie swells and forms bubbles of the same size. If two consecutive captured images do not differ from each other, then fails, so there is a shift from e'to f'). The method described in step f) can be changed so that when the deviation of the transition was made to step f'), and at the same consecutive captured images back to step b). In this case, shoot the stage b) must also be associated with the cycle of the machine, to make the images was done when the machine is in a particular phase, for example in the moment of greatest inflating bubble. It also allows you to set the oscillation sizes. Often such deviations indicate a lack of quality sausages, for example, due to improper temperature of meat, etc. When using this method, not necessarily to compare exactly successive images. Additionally or instead, the last image can be compared with the reference image. The reference image can be removed as part of initialization or set it in a different way and to keep in memory.

Finally, the camera can be directed to the output terminal of the machine where occasionally fall or roll Packed sausages ("region sausages"). If the sausage here does not appear, fails or reaches the end of the shell. As and when shooting in the area of bubbles in order to control the quality of the sausages, images that issue is lnewt on this site according to step b), you can also synchronize with the cycle of the machine. This is possible due to the fact that fluctuations in the quality also varies the size and/or shape of a sausage. In addition, it is possible to measure the area occupied on the image sausage. This can be accomplished, for example, as follows. Colour the pictures in the analytical device stores the information about the color of the shell. Then this specifies the number of pixels that have the appropriate color and are located next to each other within a certain area. The number of points in this case is a measure of the square. Accordingly it is possible to control the length (through the establishment of the longest straight line within a certain area) and other form factors. Sheath color can be defined either in the initialization phase, either continuously, optionally removing the sheath at the site of the corrugation or in the field of bubbles. When using these options, you can consider the color deviation and thus, if necessary, to determine the fluctuations of the power of light depends on the color of pixels of the image.

You can do only one of these sections (section corrugation, blistering and sausages), but also to combine them with each other. You can use multiple cameras. Using one camera shoot two or more sections and an what are lysed using analytical device, only the relevant part of the image. In this case, in particular, it is possible to combine the above-described simple and cyclic methods, the result is increased reliability of the control as a whole.

Data analysis comparison of still images is not limited. You can shoot movies (showing the actual course of the process) and continuously compare them with representative film (a film that shows the proper course of the process), which is removed either during initialization or during a properly flowing process. In this case, when processing data, you can also consider one, two or all three sections (corrugation, blistering and sausages) and work with one or multiple cameras. The beginning of the film, can be associated with the cycle of the machine.

Finally, can also be combined with each other, processing of films and still images. For example, to control gaps and reach the end of the shell selects a portion of the corrugation, and for quality control - one or both of the other section.

Additionally provided a portable display unit with the receiving device for visualizing the shot with the camera images and transmitting device for transmitting signals to the receiving device. These devices can be used to trigger a specific signal to show the last image and the and film operator, which is a display unit with a receiver.

Below using the drawings in more detail revealed two example implementations of the invention. In the drawings shows the following:

Figure 1: Schematic representation of the packaging machine for sausage production with three cameras and different sections of the image.

Figure 2: same thing, but with one camera and full coverage of the areas of the image.

Packaging machine includes a machine-syringe F, to which is attached one end of the bobbin 1. On the other end of the bobbin 1 is the brake device 2 for inhibition of intestinal membranes. On the site of the bobbin 1 before the braking device is the end of the sausage casing, which is schematically depicted in the form of a shirred casing 3. After the bobbin 1 for the brake device 2 should clamp machine V. the Issue is on the opposite side of the machine where the designated drop the baton sausage 5. Between legs 1 and machine V the shell forms the bubble 4.

The dashed line denotes the area of the corrugation R, the bubble plot and plot sausages W. In each of these areas directed one of the cameras: 6, 6' or 6". As can be seen from figure 2, instead of the three cameras you can install only the camera 6 to capture a large area, which covers areas R, and W.

As shown in figure 2, the camera 6 is connected to the analytical device is 7. Tripping device consists of a cable 8, as well as interfaces in the device 7 and the machine-syringe F (interfaces not shown). In addition, the analytical device 7 via a cable connected with the transmitting device 9, which can transmit the last captured image or the last captured image will be on the radio in the receiving device of the portable display unit 10.

1. Device for the automated control of packaging machines for sausage production, containing syringe-machine (F), legs (1), the braking device (2) for inhibition of intestinal membrane and clamping machine (V), characterized by the presence of the camera(6, 6', 6"), outstanding electrical signal, the analytical device (7) for the analysis of the video signal and the presence of a turn-off device (8), managed by the analytical device to disable syringe-machine (F).

2. The device according to claim 1, characterized in that for the visualization of the captured using a camera (6, 6', 6") of the image also provides a portable display unit (10) with the receiving device and the transmitting device (9) for transmitting signals to the receiving device.

3. The method of automated control of packaging machines for sausage production, containing machine-syringe (F), legs (1), the braking device (2) for braking casings, clamping machines is (V), characterized by the following stages:

a) in the memory system initialization record initialization parameter,

b) using a camera (6, 6', 6") remove one of the parts of the packaging machine,

c) captured by the camera (6, 6', 6") then digitizes the image,

d) digitized image recorded in the image memory,

e) if the memory already contains the initialization parameter, instead it writes the parameter other than the parameter initialization and start a new work cycle from step b).

e') otherwise the image that was recorded in step d), compared with the image captured at step (d) during the previous operating cycle,

f) if the comparison in step e') identify the difference between these images, the image memory occupied during the previous business cycle in stage d), release, and start a new work cycle from step b),

f) otherwise activate the tripping device, the switching-off machine-syringe (F), either in addition or instead of disabling the machine-syringe (F) issue a warning signal and/or initiate another action, for example, disable the clamping machine (V).



 

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