EP0972620A1 - Device for controlling the setting of inserts in a mould for manhole and process for setting inserts in a mould for manhole - Google Patents

Abstract

The invention relates to a device (28) and a method for checking the fitting of a mold (1) for manhole parts with fitting bodies, comprising: display means (44, 50) for displaying a fitting position (52) for a fitting body (16) on the mold ( 1), especially for shaft lining and molded parts; Detection means (46, 48) for detecting actual data relating to the type of the placement body (16) and its placement position in the mold (1); Comparison means (56), which cooperate with the detection means (46, 48), for comparing the actual data with target data stored in a database (56); Signal means for generating an error signal if the actual data do not match the target data; and control means (56) for controlling the display, detection, comparison and signaling means (44, 46, 48, 50, 56). <IMAGE>

Description

The invention relates to a device for checking the placement of a Mold for manhole parts with assembly bodies according to claim 1, a manufacturing system for the production of manhole parts including such a device according to claim 11, and a method for loading a mold for manhole parts with mounting bodies according to claim 12.

Shafts are known from the prior art, in particular from DIN 4034, which for ventilation, control, maintenance and cleaning as well as Merging and changing the direction, inclination and cross-section of buried Sewers serve. Such a shaft is made up of one above the other Prefabricated manhole components. The manhole base has at least a molded sleeve ring for connecting the manhole base with connecting parts and at least one shaft lining for receiving a clot and is usually made of concrete, which is poured into an appropriate shape.

Depending on the version, the manhole base is provided with different manhole linings to accommodate one or more channels of different diameters and Manufactured angular position. When manufacturing the manhole bases, type, installation height and installation angular position of the shaft lining and sleeve rings not from the design data deviate, otherwise the connecting parts are not in alignment and the waste water because of a wrong gradient between the inlet and outlet or because of a dead one Corners not, expires.

In a known manufacturing process for manhole bases, concrete is in cast a mold which essentially has an outer cylindrical mold shell, an inner cylindrical mandrel and the mandrel and the shell has load-bearing mold carrier. The shaped jacket has an after on its upper edge radially outer, circumferential annular face. Between the outside The mold jacket and the inner mold core are formed with a space Concrete is poured. Beforehand, a socket ring and at least one shaft lining inserted in the space. For this purpose, the shaft lining is first on one Retaining strip attached by placing it on a recess body attached to the retaining strip is postponed.

For the height adjustment of the shaft chuck, the recess body is along the holding bar slidably attachable, the holding bar a metric scale for adjustment the altitude. The retaining bar is for hanging in the space cranked the shape and has a hook part at its upper end. To determine the Angular position of the shaft lining on the circumference of the mold is done according to the known method a mark is made on the upper annular end face of the shaped jacket, on which the worker holds the retaining strip together with the shaft lining and hooks the recess body into the space between the mold so that the hook part covers with the marking on the annular end face of the shaped jacket and the retaining strip is parallel to the central axis of the mold on the mold jacket from the inside. In addition can be attached to the mold stops for the retaining bar to their location to define relative to the shape.

Since a manhole base is usually provided with several manhole liners and one and the same shape for producing manhole bases of the same diameter but different types and numbers of shaft chucks are used a variety of markings and stops for the retaining strips. Practice has now shown that assembly errors in the known manufacturing process occur by the worker e.g. Confused markings and a shaft lining hangs in the wrong place or a wrong sleeve ring or a wrong one Shaft lining used. This results in rejects, since assembly errors in once the bottom part of the manhole has been cast can no longer be corrected.

Proceeding from this, it is the object of the invention to equip a mold for To make manhole parts with assembly bodies more reliable, so that essentially no assembly errors can occur.

This is achieved by a device according to the invention for checking the placement of a Shape achieved for manhole parts with assembly bodies, which has the following : Display means for displaying at least one assembly position for at least one Component body on the form, in particular for a shaft lining, detection means for recording actual data regarding the type of the component body and its Assembly position relative to the shape; Comparative means, which with the detection means cooperate to compare the actual data with in a database of the comparison means stored target data; Signal means for generating an error signal, if the actual data do not match the target data; and control means to control the display, acquisition, comparison and signaling means.

Furthermore, this task is carried out by a manufacturing plant for the production of Manhole parts solved, which includes such a device.

Finally, this task is also accomplished through a process for populating a mold solved for manhole parts with assembly bodies, which the following, together one Assembly cycle forming steps includes: program-controlled marking an assembly position for an assembly body on the mold, in particular for a shaft lining; Assemble the form with the assembly body on the marked Assembly position; program-controlled recording of the actual data with regard to the Type of component body and its component position; programmatic comparison the recorded actual data with stored target data; and programmatic Generation of an error signal if the actual data deviate from the target data.

These measures result in an advantageous manner that each assembly on its own checked by the control device and evaluated by appropriate signals is, systematically avoiding rejects. Since only one assembly position at a time the placement process is shown on the form much easier and clearer for the worker, which minimizes Assembly errors leads. By placing each assembly position just before assembly is displayed, previous marking work on the shape is also omitted.

Advantageous refinements and expedient training of the parent Measures are specified in the subclaims. Such a special one An advantageous embodiment can consist in that another program-controlled Only then mark an assembly position for another assembly body takes place when the actual data with regard to the type of the preceding placement body and its assembly position match the corresponding target data. This ensures that an assembly error is not easy for the worker is ignored.

Another advantageous measure can be that the display means include a light point pointing device, preferably a laser, attached to the device is arranged so that it with its laser beam on an upper end face the shape sets a light point marking on which a holding bar for the Component body should be hung. The light point marking ensures that that the markings on the form are only temporary and not permanent , thereby confusing markings with preceding or following Populations can be avoided.

Further advantageous refinements and practical training of overriding measures are specified in the remaining subclaims the following example description with reference to the drawings.

Fig.1

eine schematische Darstellung einer Form für Schachtunterteile in einem Axialschnitt;

Fig.2

eine schematische Seitenansicht einer erfindungsgemäßen Vorrichtung in einer bevorzugten Ausführungsform; und

Fig.3

eine schematische Draufsicht der erfindungsgemäßen Vorrichtung in der bevorzugten Ausführungsform.

In the drawings:

Fig. 1

a schematic representation of a shape for manhole bases in an axial section;

Fig. 2

a schematic side view of a device according to the invention in a preferred embodiment; and

Fig. 3

is a schematic plan view of the device according to the invention in the preferred embodiment.

The mold 1 shown in FIG. 1 and known per se is used for the production of Manhole bases. The form 1 consists essentially of an outer cylindrical Sheath 2, an inner cylindrical mandrel 4 and the mandrel 4 and the mold jacket 2 carrying mold carrier 6. The mold jacket 2 has on his upper edge a radially outward-facing, circumferential annular end face 8. Between the outer mold shell 2 and the inner mold core 4 is a cylindrical Intermediate space 10 is formed, which is poured with concrete. Beforehand, a socket ring 12 fixed on an annular base 14 of the space 10 and at least a shaft chuck 16 suspended in the space 10. As in the upper part of FIG. 1 is shown, the shaft lining 16 is first attached to a holding bar 18, by plugging it onto a recess body 20 fastened to the retaining strip 18 becomes.

The recess body is for adjusting the height of the shaft chuck 16 relative to the shape 1 20 along the retaining bar 18 vertically displaceable, which is why Holding bar 16 has a metric scale for adjusting the altitude. The holding bar 18 is cranked for hanging in the intermediate space 10 of the mold 1 and has on its upper end a hook part 22. The retaining strip 18 is together with the the recess body 20 plugged shaft chuck 16 into the space 10 of the Form 1 hangs in such a way that the hook part 22 on the circular end face 8th of the shaped jacket 2 rests on a suspension point 24 and the retaining strip 18 parallel hanging down to the central axis 26 of the mold 1, on the inner peripheral surface of the Form jacket 2 is applied. Due to the position of the suspension point 24 of the holding bar 18 along the circumference of the upper end face 8 of the shell 2, the angular position of the chute 16 relative to the central axis 26 of the manhole base.

A preferred embodiment of a device 28 according to the invention is shown in Figure 2 and in an assembly station 30 for forming manhole bases integrated. The loading station 30 is one of the stations of a not shown in FIG Manufacturing plant for manhole bases.

As can be seen from FIG. 2, the device 28 has a gallows-shaped device carrier 32 on, with a vertical support arm 34 and with a form 1 with height spacing towering horizontal cantilever arm 36. The free end of the cantilever arm 36 is arranged above the central axis 26 of the mold 1, which is shown in FIG. 3. At the Free end of the cantilever arm 36 is a rotary arm 38 with one end around one Rotational axis 40 rotatably attached, which is aligned with the central axis 26 of the mold. The Rotating arm 38 is driven by a servo motor 42 which rotates the rotating arm 38 rotate preferably by 360 degrees and to a circular arc length of 2 mm at one Can position turning diameter of 1300 mm. The length of the rotary arm 38 corresponds essentially the outer radius of the cylindrical shape 1, being at the other At the end of the rotating arm 38, a light point pointing device 44, a camera 46 and an infrared distance sensor 48 are arranged.

The light point pointing device is preferably a laser 44 which is on the other End of the rotary arm 38 is arranged such that it has a laser beam 50 perpendicular to generated upper circular end face 8 of the cylindrical shape 1 and thereby sets a light spot marking 52 on its circumference for an assembly position, on which the retaining strip 18 for a shaft chuck 16 is to be hung. Outgoing is offset from the laser 44 at a radial distance on the underside of the Rotating arm 38, the camera 46, preferably a professional bus camera, attached, the Image field 51 detects the segment of cylindrical space 10 of shape 1, which in a surrounding area of the light spot marking indicated by laser 44 52 is located. Furthermore, the camera 46 is preferably the Infrared distance sensor 48 arranged for distance measurement, with which the placement height the shaft lining 16 and / or the sleeve ring 12 in the form 1 is measurable. As shown in Figure 2, the servo motor 42, the laser 44, the camera 46 and the infrared distance sensor 48 through connection cable 54 for control and Data transmission connected to a computer 56.

In the following, the inventive method for loading the Form are explained. The procedure is essentially a in the memory of the computer 56 stored control program realized. In the memory of the Computers are also the target data for each manhole base to be manufactured the type and location of the placement body relative to the form 1 stored.

At the beginning, the worker at the assembly station gives one on the monitor 58 prompted by the computer, a ready signal, preferably via a mushroom button, not shown in FIG. 2 and connected to the computer 56, to confirm that the insertion height of the socket ring 12 is checked should. The infrared distance sensor 48 then measures the installation height of the socket ring 12 in shape 1 preferably along the entire circumference of the space 10 by rotating the rotating arm 38 360 degrees and the scanning beam 60 scans the surface of the socket ring 12. The sampled data of the current situation of the sleeve ring 12 are stored in the computer 56 with desired data compared. If the socket ring 12 has been incorrectly installed, a signal generator is generated an acoustic error signal and the type and location of the error are shown on the monitor 58 displayed. In such a case the control program of the device is located 28 in an error loop, which is only left when the sleeve form ring 12 is in the correct position in Form 1.

Otherwise, if the sleeve shape ring 12 is in the correct position, the worker will over a display appearing on the monitor 58 of the computer 56 prompts the Press the mushroom button to confirm that it is ready to hang the retaining strips 18 is. Then the computer 56 controls the servo motor 42 so that the Rotating arm 38 rotates into a first loading position and the laser 44 attached to it a light spot marking on the circular end face 8 of the shaped jacket 2 52 attaches. At this point, the worker now hangs the hook part 22 with the Shaft chuck 16 and the recess body 20 pre-assembled at the desired height Retaining bar 18 a. Then a readiness signal is again via the mushroom button entered. The camera 46 then generates an image of the one attached to the mold 1 Shaft chuck 16 to identify it based on its contour and its Angle position and its insertion height in the form 1 to record. The captured contour and the image data is stored in computer 56 with respect to a control coordinate system set, which preferably coincides with the coordinate system on which get the target data. The acquired data is then compared in the computer 56 Contour and the captured image data with stored target data, on the one hand to check whether the correct shaft chuck 16 has been hooked in and on the other hand check whether the angular position and the insertion height of the shaft chuck 16 matches the target data. If this comparison turns out to be positive, a Signal generator generates an acoustic acknowledgment tone and the rotary arm 38 from the computer 56 move to the next assembly position. If a mounting error is detected the signal generator generates an acoustic error signal and the type and location of the Errors are displayed on the monitor 58. Then the control program is located the device in the error loop, according to which the assembly and the subsequent Check is repeated until the correct assembly body in the correct position in the form. Otherwise the laser 44 will not new assembly position is displayed.

The steps outlined above for fitting the mold with a fitting body together form an assembly cycle, which repeats as long until the number of placement bodies provided by the target data in the Form 1 have been inserted. After completion of the assembly, the signal generator a ready signal is generated, likewise a ready message appears on the monitor 58.

The invention is not restricted to the exemplary embodiment described above. For example, instead of one camera 46, several cameras are used which take up the form from different angles, which makes the Detection of the position and distance of the placement bodies is facilitated. It is furthermore, it is not necessary for the camera 46 to be moved relative to the shape, it could also be stationary.

Claims (15)

Device (28) for checking the loading of a mold (1) for shaft parts with Assembly bodies, comprising: display means (44, 50) for displaying an assembly position (52) for an assembly body (16) on the mold (1), in particular for Manhole liners and molded parts; Acquisition means (46, 48) for acquiring actual data regarding the type of the mounting body (16) and its mounting position in the form (1); Comparison means (56) which interact with the detection means (46, 48), for comparing the actual data with those stored in a database of the comparison means (56) Target data; Signal means for generating an error signal if the actual data do not match the target data; and control means (56) for controlling the Display, acquisition, comparison and signaling means (44, 46, 48, 50, 56). Device according to Claim 1, characterized in that the display means comprise a light point pointing device, preferably a laser (44), which is arranged on the device (28) in such a way that it points with its laser beam onto an upper end face (8) of the mold (1) sets a light point marker (52) on which a retaining strip (18) for the assembly body (16) is to be hung. Device according to one of claims 1 or 2, characterized in that the detection means have at least one infrared distance sensor (48) for measuring the distance, with which the insertion height of the fitting body (12, 16) in the mold (1) can be measured. Device according to one of the preceding claims, characterized in that the detection means have at least one camera (46) with which an image of the component body (16) can be generated in order to identify it by means of the comparison means (56), and with which the angular position and the insertion height of the component body (16) in the mold (1) can be detected. Device according to one of the preceding claims, characterized in that means are provided for positioning the detection means (46, 48) relative to the mold (1). Device according to claims 1 to 5, characterized in that the means (32, 34, 26, 38, 42) for positioning the detection means (46, 48) are a gallows-shaped device carrier (32) with a shape which overhangs the shape (1) at a height have a horizontal cantilever arm (36) on which a rotary arm (38) is rotatably attached at one end about an axis of rotation (40) which is aligned with the central axis (26) of the mold (1), and at the other end of the rotary arm (38 ) the laser (44), the camera (46) and the infrared distance sensor (48) for measuring the distance are arranged, the length of the rotating arm (38) corresponding to the radius of the cylindrical shape (1). Apparatus according to claim 6, characterized in that the rotating arm (38) can be driven by a servo motor (42) which can rotate the rotating arm (38) by 360 degrees and position it on a circular arc length of 2 mm with a turning diameter of 1300 mm . Device according to one of the preceding claims, characterized in that the control means and the comparison means have a computer (56), in the memory of which a control program and a database for the target data are stored. Device according to one of the preceding claims, characterized in that the control means (56) are designed such that a further program-controlled marking of a placement position (52) for a further placement body only takes place when the actual data regarding the type of the preceding placement body and its assembly position match the corresponding target data. Device according to one of the preceding claims, characterized in that the signaling means are designed in such a way that they generate the error signal if an incorrect mounting body or the correct mounting body has been inserted into the mold (1) differently from its desired position, and that it is inserted Generate ready signal clearly distinguishable from the error signal after all the placement bodies have been inserted into the mold in their desired position. Production plant for the production of manhole parts including a device according to one of claims 1 to 10. Method for loading a mold (1) for manhole parts with mounting bodies (16) which comprises the following steps which together form an assembly cycle includes: program-controlled marking of an assembly position (52) for one Assembly body (16) on the mold (1), in particular for a shaft lining; Populate the shape (1) with the assembly body (16) at the marked assembly position (52); program-controlled recording of the actual data regarding the type of the component body (16) and its mounting position; programmatic comparison the recorded actual data with stored target data; and programmatic generation an error signal if the actual data deviate from the target data. A method according to claim 12, characterized in that a further program-controlled marking of a placement position for a further placement body only takes place when the recorded actual data match the corresponding target data with regard to the type of the preceding placement body and its placement position. Method according to one of claims 12 or 13, characterized in that before the marking of the placement position and between the placement and the acquisition of the actual data, a manual confirmation signal is given in order to initiate the next program step in each case. Method according to one of claims 12 to 14, characterized in that the assembly cycle is repeated until the mold (1) is equipped with a number of assembly bodies (16), which is predetermined by the target data, and that after Completion of the assembly a ready signal is generated.

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