JPH1170902A - Filler for filling product in liquid or paste condition or containing grain into packaging conainer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily fit a filler in a different quantity control valve arrangement according to application cases. SOLUTION: A first servo motor 20 is positioned in a first frame 15, at least one air pressure cylinder 63 and a second servo motor 84 are positioned in a movable second frame 66 through the first servo motor 20, and an exhaust shifter is joined with a relatively shiftable support body strip 57. By this, the support body strip 57 can be moved up and down by the pneumatic cylinder 63 and the second serve motor 84.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention comprises a plurality of filling valves arranged in a holding member capable of moving up and down, as defined in the first aspect of the present invention, and a discharge mechanism of the filling valves is provided. The invention relates to a filling device for filling liquid or pasty products or particle-containing products into packaging containers of the type which can be raised and lowered synchronously by a common drive device.

[0002]

2. Description of the Related Art A filling device of the above-mentioned type is known, for example, from German Patent No. 3,943,149. This known filling device has a valve holding plate in which a plurality of metering valves are arranged in parallel and / or one after the other. The discharge shifter of the metering valve is opened and closed by a drive acting on a spindle drive via a toothed belt, which itself is connected to a plate holding the upper side of the metering piston. . Known filling devices are adapted to the respective application on the basis of a spindle drive and a plate for the metering piston. This requires specially adapted components for each application and also makes the current filling device for different metering valve arrangements and / or for different products and different filling rates. Recombination costs are relatively high for recombination.

[0003]

SUMMARY OF THE INVENTION The object of the invention is to make it possible to easily adapt the filling device to different arrangements of the metering valve depending on the application.

[0004]

According to a first aspect of the present invention, a first servomotor is disposed on a first frame. At least one pneumatic cylinder and a second servomotor are arranged on a second frame movable by a first servomotor, and an exhaust shifter is coupled to a correlatively shiftable support strip; The carrier strip can be moved up and down by the pneumatic cylinder and the second servomotor.

[0005] The solution of the present invention results in a relatively flexible filling system with a reduced variety of components. This is achieved according to the invention in that the discharge shifter of the filling valve is connected to a correlatively shiftable carrier strip or pressure strip, so that the pressure strip can be adapted to different valve arrangements. Is done. Furthermore, a fine adaptation to different types of products is easily made possible by virtue of the fact that two different drives are operatively connected to the discharge shifter.

[0006] Other advantages and further advantageous features of the filling device according to the invention for filling liquid or pasty or particle-containing products into packaging containers are described in the claims and in the drawings. Is clear from the detailed description of. In particular, it is advantageous for the metering element to be made modular from many parts, so that different structural types can be produced inexpensively.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described in detail with reference to the drawings.

A filling device 10 shown in FIG. 1 for filling a packaging container with a liquid or pasty product such as yogurt or pudding or a particle-containing product is a component of a production plant not shown in detail. is there. In this production plant, a packaging container 1 is formed in a heat-deformable packaging web (long strip-shaped package) 2 in a first operation step, and is arranged in the packaging web 2 in parallel and one after another. The packed container 1 is then transported intermittently to the area of the filling device 10. Inside the filling device 10, the packaging web 2 is guided in the longitudinal transport direction by a guide strip 3. After filling the packaging container 1 with the product in the filling device 10, the sealing foil is heat-sealed on the upper surface of the packaging web 2. Finally, the packaging container 1 is punched into a packaging web 2.
From the individual.

On one side of the gantry 11 of the filling device 10,
Two cylindrical guide columns 12 are fixed, and both guide columns 12 are surrounded by one upright support 13 slidable along the guide columns. The upright support 13 is a component of the first frame 15, said first frame further comprising two cross beams 1.
6 and two connecting members 1 for connecting the two cross beams 16 to each other.
7, 18 are included. The cross beam 16 extending in the horizontal plane is fixed to the upright support 13 on the end face side.
Extending from the upright support 13 are two additional struts 19, which are connected to the upright support 13. A first servomotor 20 is arranged on the gantry 11 so that the first frame 15 can move up and down in the vertical direction. The output shaft of the first servomotor 20 is configured as a spindle 21, which is surrounded and screwed by a first spindle nut 22. The first spindle nut 22 is arranged in a first beam 23 connecting the upright supports 13 to each other.

[0010] A valve holding plate 25 is fixed to the lower surface of the first frame 15, and the valve holding plate is sealed in the vicinity of the gantry 11 by a sealing element 26 around the entire circumference. In the valve holding plate 25, a considerable number of cutouts 24 for a plurality of filling valves 27 are provided. To easily adapt the filling device 10 or the filling valve 27 to the number and arrangement of the products to be filled or the number of packaging containers 1 in the packaging web 2, the valve holding plate 25 is provided with a first frame 1.
5 can be easily attached, for example, by a quick fastening mechanism or a screw joint not shown. In the valve holding plate 25, the filling valve 27 is provided for each of the packaging containers 1 in the packaging web section periodically conveyed into the filling device 10.
On top of each other and in alignment with each packaging container. Accordingly, in the illustrated embodiment, six rows of filling valves 27 are provided in parallel, seven in each row.

As best seen in FIGS. 5 and 6, each fill valve 27 has a three-part casing 28 which comprises a tubular intermediate piece 29 and a lower part welded to the tubular intermediate piece. It comprises a part 31 and an upper part 32. The tubular intermediate piece 29 is a pultruded and surface turned tube section for cost and simplicity reasons, or
While it consists of turning parts that can be easily manufactured,
The upper part 32 and the lower part 31 are manufactured by a precision casting method. On the side of the upper part 32, a product supply channel 33 is formed, which is connected to a storage tank for the product to be filled by a communication conduit not shown. The three-part construction of the casing 28 allows for easy adaptation to each product. So-called flat slide valves or stop valves are advantageous for liquid products, whereas so-called slide valves can be provided when using pasty products. In order to realize the valve types shown in FIGS. 5 and 6, the filling valve 27 is provided with correspondingly adapted bases 34, 35, which are also suitable for each valve type. And cooperates with discharge shifters 36, 37 which are guided in the filling valve 27 and can be raised and lowered. The tubular intermediate piece 29 and the upper portion 32 are both equal in both valve construction types. The bases 34, 35 have a first joint section 38 on the side closer to the lower part 31 so that the bases 34, 35 can be easily connected to the lower part 31 and, in some cases, can be easily replaced. In the region of the first joint section, the inner diameter is enlarged. First of bases 34 and 35
The inner diameter of the joint section 38 is the second joint section 3 of the lower part 31.
9 and the outer diameter of the second joint section is
The diameter is reduced in comparison with the other outer diameters of the lower portion 31. Furthermore, the lower part 31 has a third joint section 41 on the side closer to the bases 34, 35, and the outer diameter of the third joint section is further reduced in comparison with the aforementioned second joint section 39. Therefore, the outer diameter of the third joint section is
Equal to the inner diameter of the fourth joint section 42 following the first joint section 38. The outer surface of the third joint section 41 is surrounded by a sealing ring 43 which seals the bases 34, 35 against the lower part 31. The first joint section 38 of the filling valve 27, the second
The joint section 39 and the fourth joint section 42 are the valve holding plate 2
5 and at the outer periphery of the fourth coupling section 42 an additional sealing ring 44 is provided for sealing against the valve holding plate 25.

The discharge shifters 36, 37 are provided with bases 34, 3
5 is connected to the valve shift rod 45 at an end away from the valve shift rod 5. This connection is made by means of a coupling 46 which makes it possible to easily replace the discharge shifters 36, 37 after removing the bases 34, 35. The valve shift rod 45 projects from a closing lid 48 arranged above the upper part 32. The closure lid 48, which serves to guide the valve shift rod 45, is connected to the upper part 32 by a plurality of threaded joints 49. However, in FIG. 6, only one screw joint 49 is shown. On the side of the closure lid 48 near the upper part 32, the valve shift rod 45 is surrounded by a bellows 50. The bellows 50 has a bellows packing 51 which contacts a radially inwardly directed annular collar 52 formed in the upper portion 32 and which is closed by a closure lid 48. Squeezed in the direction. The end of the bellows 50 near the bases 34 and 35 is clamped by a steel clamp ring 54. In this area, the outer periphery of the valve shift rod 45 is fitted with a valve shift in such a way that the steel clamp ring 54 presses the end of the bellows 50 sealingly and non-displaceably to the corresponding valve shift rod section. A plurality of annular seal flanges 56 extending radially from the rod 45 are provided,
Due to its preload, the steel clamp ring 54 press-fits the end of the bellows 50 into the sealing collar, and thus keeps the bellows end from leaking against the valve shift rod 45.

To allow synchronized movement of all fill valves 27, the end of each row of valve shift rods 45, remote from coupling 46, is secured to a support strip or pressure strip 57. I have. As can be seen from FIG. 3, the pressure strip 57 itself is shiftably mounted on two forming rails 58. Forming rails 58 that extend in the transport direction of the packaging web 2 and are substantially aligned with the edge zones on both longitudinal sides of the packaging web 2 are known based on assembly technology and device / equipment construction technology. Therefore, a detailed description is omitted here. Importantly, each molded rail 58
However, each of the lower surfaces facing the pressure strip 57 has a continuous vertical groove 59. Each end of the pressure strip 57 is pressed into the vertical groove 59 by a groove slide 61 and a screw 62 cooperating with the groove slide 61. 61 and thus the pressure strip 57 can be shifted relative to the forming rail 58.

The front ends and the rear ends of the two forming rails 58 are connected to one pneumatic cylinder 63 when viewed in the transport direction of the packaging web 2. Valve shift rod 4 for this connection
5, the cylindrical valve stem of the pneumatic cylinder 63 has, for example, an external thread, and the external thread is
It is screwed into a groove slide 64 arranged in a vertical groove 65 extending along the upper surface of the forming rail 58. A total of four pneumatic cylinders 63 connect the two forming rails 58 by a common control block or by separate control blocks.
The operation can be controlled so that the two pneumatic cylinders 63 move up and down synchronously.

The upper surface of the pneumatic cylinder 63, away from the forming rail 58, is fixed to the lower surface of the second frame 66. The second frame 66 is arranged in a transverse direction perpendicular to the forming rail 58 and parallel to the pressure strip 57, and has two girder members extending beyond both ends of the pressure strip 57. 67 and two connecting girders 6
Eight. The beam 67 and the connecting beam 68 together constitute a second rectangular frame 66. Joining girder 6
8, one spindle nut 69 is installed in each of the both end regions near the upright support 13. Another spindle nut 69, which is arranged at the midpoint of the connecting beam 68 opposite the upright support 13, is also supported in the same manner.

The bearing device of the spindle nut 69 shown in FIG. 4 has a base body 72 which is adapted to the outer contour of the spindle nut 69 and has a spherical outer surface 72 in an upper region 70 and a lower region 71. The spindle nut 69 is press-fitted or bonded. The upper region 70 and the lower region 71 are in contact with the curved spherical surfaces 73, 74 of two bearing plates 75, 76 located in a common spindle nut casing 77. The spindle nut casing 77 itself is also arranged in the connecting beam 68. The base body 72 and thus the spindle nut 6
A positioning pin 78 is provided for each spindle nut 69 in order to position the base 9 against the bearing plates 75 and 76, and the positioning pin 78 is provided between the upper region 70 and the lower region 71 on the outer surface of the base body 72. Act on.

In each spindle nut 69, spindles 79, 80, 81 (see FIG. 2) extending in the direction of operation of the pneumatic cylinder 63 and arranged in the cross beam 16 or the coupling member 17 are rotatable, respectively. Therefore, the spindles 79 to 81 form corner points of one virtual triangle in the plan view of FIG. One spindle 79 arranged in the joining beam 68 is connected to the first frame 15.
Servo motor 84 disposed at the midpoint of the connecting member 17 of FIG.
Is combined with At the end of the spindle 79 near the second servo motor 84, a toothed belt wheel 85 for driving a toothed belt 86 is fixed so as not to rotate relative to the spindle. The toothed belt 86 is provided at a height level of the toothed belt wheel 85 so that each spindle 80,
81 are guided over respective additional deflection guide wheels 87 fixed non-rotatably. Toothed belt 86
A plurality of rollers 88 are provided for guiding the gears and for tensioning the toothed pulley 85 and the deflection guide wheel 87. The rollers 88 are provided with the toothed belt wheel 85 and the deflection guide wheel 87. Between the cross beam 16 and the first frame 1
5.

The above-described filling device 10 operates as follows. That is, for filling the packaging container 1, the packaging web 2 is periodically conveyed into the filling device 10 by one feeding length by a conveyance device not shown. As soon as the packaging container 1 is stopped below the filling valve 27, the first servomotor 20 is driven to move the first frame 15 from its upper limit position to its lower limit position. Due to the relative movement between the casing 28 and the discharge shifters 36 and 37 based on this drive, the product located in the filling valve 27 is ejected from the bases 34 and 35 and delivered into the packaging container 1.
Since the casing 28 of the filling valve 27 is arranged in the valve holding plate 25 connected to the first frame 15,
When the first frame 15 descends, the bases 34 and 35 further enter the packaging container 1 to avoid foaming or splashing. Since the operation of the second servomotor 84 is controlled at the latest when the filling valve 27 or the casing 28 reaches the lower limit position, the second frame 66 is also moved toward the packaging container 1 from the upper limit position. At this time, the valve shift rod 45 connected to the second frame 66 by the pressure strip 57 is moved toward the packaging container 1, and the closing operation of the filling valve 27 is started accordingly. The closing and sealing of the filling valve 27 itself, i.e. the closing of the ferrules 34, 35 by the discharge shifters 36, 37, is effected by four pneumatic cylinders 63. The operation of the pneumatic cylinder is controlled as soon as the second servomotor 84 moves the second frame 66 to its lower limit position. Due to the closing of this filling valve 27 caused by the pneumatic cylinder 63, a relatively large closing force is generated exclusively by the pneumatic cylinder 63. Furthermore, a fine adaptation to the respective product is obtained by a corresponding actuation control.

During the dispensing of the product from the filling valve 27, the filling valve 27 is again moved somewhat as the filling level in the packaging container 1 increases, so that the product does not significantly stain the ferrules 34, 35. May need to be lifted. This raising movement of the first frame 15 is caused by the first servomotor 20.

After the filling valve 27 has escaped from the packaging container 1 and the desired volume has been dispensed, the packaging web 2 is further transported by one feed length, and then the above operation is repeated.

It should be noted that, if the filling device 10 has an appropriate cantilever size, it is necessary to reduce the vibration of the first frame 15 when the first frame 15 is rapidly raised and lowered. On the opposite side, it is advantageous to dispose a mass, for example in the area of the guide column 12, for example a second servomotor 84, whereby the arrangement of the spindles 80, 81 is correspondingly changed.

Further, instead of the guide column 12 described in the embodiment, the first frame 15 can be moved by, for example, a plurality of spindles respectively arranged in the corners of the first frame 15. In this case, corresponding to the driving of the second frame 66, the driving of the first frame 15 is effected by only one drive motor driving a plurality of spindles via one toothed belt.

[Brief description of the drawings]

FIG. 1 is a side view of an apparatus for filling a liquid or paste-like product into a packaging container.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is an enlarged view of a part of the frame shown in FIG. 1;

FIG. 4 is a longitudinal sectional view of a spindle / nut unit.

FIG. 5 is a longitudinal sectional view of the metering valve shown in two end positions.

FIG. 6 is a longitudinal sectional view of a different embodiment of the metering valve shown in two end positions.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Packaging container, 2 Packaging web (long strip-shaped package), 3 Guide strip, 10 Filling device, 11 Stand, 12 Guide column, 13
Upright support, 15 1st frame, 16 cross beam, 17, 18 binding material, 19 stay material, 2
0 1st servo motor, 21 spindles, 2
2 1st spindle nut, 23 1st girder material,
24 notch, 25 valve holding plate, 26 sealing element, 27 filling valve, 28 casing, 29 tubular intermediate piece, 31 lower part, 32
Upper part, 33 Product supply path, 34, 35
Base, 36, 37 Discharge shifter, 38 1st joint section, 39 2nd joint section, 41 3rd joint section, 42 4th joint section, 43 seal ring, 44 seal ring, 45 valve shift rod,
46 Joint, 48 Closure lid, 49 Screw joint, 50 Bellows, 51 Bellows packing, 52 Ring collar, 54 Steel clamp ring, 56 Seal flange, 57 Pressure strip, 58 Mold rail, 59 Vertical groove, 61
Groove slider, 62 screw, 63 pneumatic cylinder,
64 groove slider, 65 vertical groove, 66 second frame, 67 girder, 68 joint girder, 69
Spindle nut, 70 upper area, 71 lower area, 72 base body, 73, 74 curved spherical surface, 75, 76 bearing plate, 77 spindle nut casing, 78 positioning pin, 79, 80,
81 spindle, 84 second servo motor,
85 toothed belt wheel, 86 toothed belt, 8
7 turning guide car, 88 rollers

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kno Lemke Germany Bietigheim-Bissingen Birkenweg 23 (72) Inventor Bernd Wirke Germany Leutenbach Ai Henweg 8 (72) Inventor Katharina Ziegler-Feel Chu Germany Krailsheim Kreuzbergstrasse 20

Claims (6)

[Claims] A filling device (27) arranged in a holding member (25) which can be moved up and down, and a discharge mechanism (36, 37) of the filling valve is synchronously driven by a common driving device. A filling device for filling a packaging container with a liquid or paste-like product or a particle-containing product of a type capable of moving up and down, wherein a first servomotor (2) is mounted on a first frame (15).
0), and at least one pneumatic cylinder (63) and a second servomotor (84) are arranged on a second frame (66) movable by the first servomotor (20). And a discharge mechanism (36, 37) are coupled to a support strip (57), which can be shifted relative to the pneumatic cylinder (63) and the second servo. A filling device for filling a packaging container with a liquid or paste-like product or a particle-containing product, the filling device being capable of being moved up and down by a motor (84). 2. A plurality of spindle nuts (69) respectively supporting spindles (79, 80, 81) are arranged in the second frame (66), and the spindles (79, 80, 81) are arranged. Are the spindles (79, 80,
2. A filling device according to claim 1, wherein the filling device is driven by a second servomotor (84) acting on a toothed belt (86) wound around 81). 3. A forming rail (58) having a longitudinal groove (59) is arranged between the pneumatic cylinder (63) and the support strip (57), and the support strip (5) is provided.
A filling device according to claim 1 or 2, wherein 7) is shiftable and fixable along the flute (59). And a holding member capable of moving up and down.
It is configured as a valve holding plate (25) having a plurality of cutouts (24) adapted to 7), and the valve holding plate (25) is exchangeably fixed to the first frame (15). The filling device according to any one of claims 1 to 3. 5. Each filling valve (27) has a tubular intermediate piece (29).
5. The upper part (32) and the lower part (31) manufactured by a precision casting method are welded to the tubular intermediate piece. 6. Filling device. 6. A base (3) in the lower part (31) of each filling valve.
4, 35) can be attached, and the base (34, 35)
6. The filling device according to claim 5, wherein the cooperates with a discharge mechanism (36, 37) adapted to the base.