EA030516B1 - Filling device for a packaging machine - Google Patents

Abstract

The invention relates to packaging machine equipment, in particular, to filling devices and is intended for packing dust-like loose materials in flap bags. A filling device (1) for filling a flap bag (4) hanging at a filling section (30) of a packaging machine (50) comprises a filling channel (2) and at least one controlled channel gate (3) to control movement of loose material (5) through the filling channel (2). The channel gate (3) of the filling channel (2) comprises a rotatable closure head (6) located, at least partially, in the filling channel (2), the closure head rotation axis (7) being disposed across the filling channel (2). In the closed position of the channel gate (3), the filling channel (2) is completely closed, and in the open position, the cross-section of the filling channel (2) of the central portion (34) is fully open. The closing head (6) is made so that it passes through the wall (15) of the filling channel (2) and is directed inwards and/or passes through the opposite wall (16) of the filling channel (2).

Description

The invention relates to the equipment of the packaging machine, in particular to filling devices, and is intended for packaging powdered bulk materials in valve packages. The filling device (1) for packaging materials into the valve package (4), which hangs at the filling place (30) of the packaging machine (50), contains a filling channel (2) and at least one controlled channel flap (3) to control the passage through the filling channel (2) of the flowable substance (5). Channel flap (3) of the filling channel (2) contains at least partially located in the filling channel (2) a rotatable closing head (6), the axis of which (7) is located across the filling channel (2). In the closed position of the channel flap (3), the filling channel (2) is completely closed, and in the open position, the cross section of the filling channel (2) of the central part (34) is fully open. The closing head (6) is designed in such a way that it passes through the wall (15) of the filling channel (2) and is directed inwards and / or passes through the opposite wall (16) of the filling channel (2).

030516

The present invention relates to a filling device for a packaging machine and to packaging machines equipped with at least one filling device for packaging bulk materials into valve packages. The filling device according to this invention can be used for packaging all types of bulk materials. This filling device and the packaging machine, in particular, are preferably used for packaging finely granulated substances, i.e. when packing small and dusty substances, for example, such as cement.

Various filling devices are well known in the art, having a filling channel and at least one controllable channel flap that serves to control the flow of bulk material with which the valve bag is passed through the filling channel. Known filling devices, as a rule, have two or three different positions of the channel flap for different degrees of clearance in the channel. With a wide-open channel damper and with a free cross-section of the filling channel, the flow at high speed is ensured, which, in turn, ensures a high filling of the weight per unit time into the packets.

In order to precisely adjust the quantity to be filled or the volume filled, the filling rate decreases towards the end of the filling process and the filling then continues at a low speed. For this purpose, a controlled channel flap significantly reduces the cross-section of the filling channel. As soon as the specified filling volume is reached, the channel flap is completely closed in such a way that filling is stopped.

GB No. 416215 discloses a packaging machine having a valve in the filling channel, which rotates on a valve axis passing across the filling channel. The valve contains a circular valve, which can be completely closed in such a way that filling is stopped, and rotate on the valve axis, provided that it is in the center. The rotary valve axis passes through the center through the filling channel. In the vertical position, the flap closes the round filling channel. Turning 90 ° to a horizontal position causes the fill channel to largely open. In the open position, both the pivot axis and the flap are located in the center of the substance flow. During the packaging of bulk materials, friction of the substance causes continuous, strong wear of the axis of rotation and damper. In this regard, it is necessary to maintain and replace the rotary axis and damper. Greater wall thickness can increase service life, although this reduces the volume flow. The valve forms an obstacle in the flow, which significantly increases the friction and flow resistance of the bulk material.

Therefore, for example, for scuttle flaps, scissor valves are used in which the scissor grippers release the elastic part of the filling channel, or the scissor grippers close the filling channel, partially in the low flow position, and completely in the closed position. This type of scissor valve works reliably and can provide tight closure of the filling channel while ensuring high throughput. Scissor lifts practically do not wear out, since there is no friction with the substance that must be filled. However, the disadvantage is that the channel flap can act in the elastic part of the filling channel in such a way that the filling device requires a larger radius. Moreover, scissor movements cause wear of the elastic sleeve, which requires its constant replacement. Elastic sleeve runs along the entire filling channel, which leads to an increase in friction.

In the case of rotary packaging machines containing a plurality of filling devices distributed around the circumference, this will increase the diameter of the packaging machine and, thus, increase the overall size.

The valve provides a small structural volume and reduced installation length. In this type of channel flap, a swivel plate is placed between two other steel plates. The filling channel passes through three adjacent steel plates. The axis of rotation of the central plate, which selectively opens the filling channel, runs parallel to the filling channel. The eccentric rotary motion closes the filling channel at first partially and finally completely in order to provide control over the filling process.

To seal the three steel plates are pressed to each other under the influence of the spring in such a way as to ensure sufficient sealing of the outer part. This type of channel flap works reliably and requires little space in the filling channel. Steel plates rubbing against each other are subject to constant wear. The wall thickness of the plate can be increased in order to extend the service life. However, each of the steel plates must be replaced during maintenance, which causes downtime. Moreover, it requires installation work. Another disadvantage is that in the process of work a certain amount of matter falls between the steel plates. Even if these are relatively small quantities, it still leads to contamination of the packaging machine and the surrounding area. Over time, the seal will clog the valve and prevent movement of the moving plate.

The object of the present invention is a filling device for a packaging machine and a packaging machine equipped with this device, which provides high speeds of 1 030516

This is combined with low wear, and the filling device requires little space.

The problem is solved by a filling device having the features set forth in claim 1, and a packaging machine having the features set forth in claim 15. Preferred specific embodiments of the invention are described in the dependent claims. In addition, further advantages and properties of the invention can be taken from examples of specific performance and from the General description.

A filling device for a packing machine for packing powdered substances, such as cement, into a valve bag hanging at the filling point of the packing machine, having a filling channel and at least one controllable duct gate to control the passage of the bulk material through the filling channel with which the valve bag must be filled and the channel flap of the filling channel contains, at least partially located in the filling channel, a rotatable closing head, the axis of rotation of which is located across filling channel in such a way that in the closed position of the channel flap the filling channel is completely closed and in the open position the cross section of the filling channel is completely open in at least one central part, according to the invention, the closing head passes through the wall of the filling channel and the closing head is directed inside and / or passes through the opposite wall of the filling channel.

In the filling device, the channel flap is configured to be adjusted with a lever and actuator from the closed to at least one open position.

The closing head contains in the inner part of the filling channel at least one closure wall located centrally relative to the axis of rotation, and the section of the filling channel with an open closing wall depends on the angle of rotation of the closing head.

The filling channel has a rectangular cross section, at least in the region adjacent to the closure head.

The filling channel has in the region of the closing head at least one hole in which at least a part of the closure wall is located when the latter is in the fully open position.

The filling channel has in the region of the closing head at least one hole, into which at least a part of the locking wall can enter while the locking wall is in the closed position.

The axis of rotation is not located in the center of the filling channel, and / or the closing head has at least one rounded section in the form of a plug with a larger diameter than the transverse size of the filling channel.

The filling device has a filling module provided for obtaining an intermediate amount of a granular substance required for packaging.

The filling module has at least one feed element, which, in particular, is designed as a feed turbine.

In the filling device, at least part of the internal space of the filling module, from which the filling channel extends, is rounded off, preferably from the feed turbine.

When the closure head is installed in the filling device, at least part of the closing head is located within a rectangular area and is located as close as possible to the outer part and / or to the cross-section of the filling module.

In the filling device, the filling space is connected to the filling channel.

Between the filling place and the filling channel there is an elastic tube.

A packaging machine according to the invention comprising an automatic valve packer with a storage of said bags, includes at least one filling device for packing powdered substances, as described above.

Features of the present invention shown in the drawings (Fig. 1-6) and discussed below on exemplary embodiments of execution with reference to the accompanying drawings.

FIG. 1 is a simplified top view of a rotary packaging machine;

in fig. 2 shows a filling device for a packaging machine according to FIG. one,

in fig. 3 - channel flap of the filling device in accordance with FIG. 2,

in fig. 4 shows a filling device in accordance with FIG. 2 in a schematic sectional view with a schematic depicted valve package,

in fig. 5 shows a filling device in accordance with FIG. 4 with a partially closed channel flap;

FIG. 6 shows a filling device in accordance with FIG. 4 with a fully closed filling channel.

FIG. 1 shows a simplified top view of a packaging machine 50 in accordance with the invention, which serves to fill bulk materials into valve packages. Packing machine 50, for example - 2 030516

measures, fills valve bags with 4 cement.

The packaging machine 50 rotates clockwise in the direction of the arrow 54. The automatic package stacker 51 is provided in a corresponding angular position in order to pick up the valve packages 4 from the storage for the packages 53 and automatically attach these valve packages 4 one by one to the filling places 30 passing in rotation .

Valve bags 4 are filled with substance 5 to be packaged during continuous rotation. Filling first occurs at high speed until the desired weight is reached. The filling then continues at low speed until the final weight is reached. The adjustment phase can follow until an angular position is reached where there is a discharge belt 52, onto which the filled valve bags 4 are unloaded. The weight of the valve bags 4 can be re-checked on the discharge belt 52. The filled valve bags 4 are then removed.

FIG. 2 shows a filling device 1, for example, for a packaging machine 50 according to FIG. 1. The filling device 1 shown has a filling module 25 with a feeding element 24, which in this case is represented by a feeding turbine 27 rotating around a horizontal axis. In order to provide an overview of the internal space 29 of the filling module 25, the plate covering the side of the filling module 25 has been omitted in the drawing in accordance with FIG. 2. This allows you to see the inner space 29 of the filling module, including the feed turbine 27.

Bulk substance 5 enters the filling module 25 through the inlet 26. The substance to be packaged is supplied through the feed turbine 27, which at this moment rotates clockwise 54 towards the filling channel 2, which is located in the lower part 28, in this case in the lowest part of the filling module 25 almost horizontally.

This is followed by a channel valve 3 located in the filling channel 2. Channel valve 3 contains a closing head 6, which is located in a cylindrical segment 32. The closing head 6 has the ability to pivot in segment 32 and can be rotated using a lever 9 and an actuator 10. Drive 10 This case is represented by a cylindrical actuator 14, which allows the closing head 6 to be moved from the closed position to the partially open position, and then to the fully open position 13, as shown in FIG. 2

The closing head 6 contains rounded sections 8 on the walls 15 and 16 of the filling channel 2, where the closing head 6 passes through the walls 15 and 16. This facilitates sealing of the filling channel 2, since sealing is required only for a rotating surface that does not move in a friable substance 5 Therefore, there is much less wear compared to other closing heads.

FIG. 3 shows a perspective view of a channel flap 3 with a closing head 6 having the ability to pivot about the axis of rotation 7. The axis of rotation 7 passes through the center through the rounded sections 8 of the closing head 6. The lever 9, which in combination with the actuator 10 causes the closing head 6 to rotate, shown again. The rotary movement of the closing head 6 causes the locking wall 18 to rotate around the axis of rotation 7. This allows you to open or close the inner part 17 or the entire filling channel 2. The axis of rotation 7 passes across the filling channel 2 and even perpendicular to the filling axis 2.

Referring to FIG. 4-6, the operation of the filling device 1 and the channel flap 3 is described below.

In the position shown in FIG. 4, the channel flap 3 is fully open, while the closure wall 18 of the closing head 6 is in the upper position. The central part 34 is completely freed.

In this configuration, even the cross-section of the filling channel 2 is released in the fully open position 13 and has no significant obstacles. Bulk substance 5, transmitted through the feed turbine 27, is filled into the valve package 4 through the filling channel 2, the flexible tube 31 and the filling space 30. At this time, the valve package 4 is attached to the filling space 30 by the valve. The filling space 30 with the valve bag 4 attached is suitable for the filling device 1, but is not communicated with it from the point of view of weighing. The locking wall 18 rises up from the filling channel 2.

FIG. 5 shows a partially open position 12 in which the closing head 6 is in a position at a different angle of 20 and the size of the section 19 allowing the substance to flow freely through the filling channel 2 is noticeably reduced. The closure wall 18 closed the filling channel 2 more than half and turned from the upper opening 22 into the filling channel 2 to the position 20a. In contrast, the locking wall 18 in the position of rotation 20 shown in FIG. 4, is still completely inside the hole 22.

FIG. 5 shows that in the case of a vertical arrangement, at least part of the closing head 6 and the channel flap 3 are located in the lower part 28 of the filling module 25 and the internal space 29 of the filling module 25, as well as in the lower part of the feed turbine 27. Thus, the filling device requires very little space in the longitudinal direction.

- 3 030516

FIG. 6 shows the closed position 11 of the channel flap 3 in which the closure wall 18 completely covers the filling channel 2. In this rotational position 20b, the edge of the closing wall 18 enters the opening 23 in the lower part of the filling channel 2 so as to achieve a tight labyrinth-like seal 33 of the filling channel 2 In this position, the closing head 6 rotates further from the position in FIG. 5. The filling channel 2 can then be opened by turning the closing head 6 back to the positions shown in FIG. 5 or 4.

In preferred configurations, the channel flap 3 has a cylindrical segment for the closing head 6, due to which, for example, manufacturing is facilitated. The lower part of the cylindrical segment can be equipped with matching inserts 56 so that the corresponding wall of the filling channel 2 has almost no obstacles in those places where swirling of the flow of granular material 5 can occur. Hole 23 has a sufficiently small shape and size that does not create significant obstruction of the flow of substance 5 product.

FIG. 6 is additionally shown as a dotted line, a rectangular surface 58 of the outer border of the present visible part of the filling module 25. It is clear that part of the channel flap 3 is located inside this border. In particular, a portion of the closing head 6 is shown and even the entire closing head 6 is completely within the filling channel 2 within the outer border 58.

FIG. 6, in addition, a dashed dotted line shows a rectangular surface 58, adjacent as close as possible to the internal space of the filling module 25. A portion of the closing head 6 is located inside the dash-dotted rectangular surface 57.

The filling device 1 according to the present invention has many advantages. A significant advantage of this filling device is that it requires little space, which is achieved, for example, by the fact that the axis 7 of rotation of the closing head 6 is located across the filling channel 2. At the same time, the device wears little because in the open position the filling channel 2 is completely open for passing. In the open position, the closing head 6 practically does not enter the filling channel 2. The part of the central region of the closing head 6 on the rotary axis 7, which can exit, is at least 25% of the cross-sectional area of the filling channel 2. Part of the central region of the cross-sectional area of the filling channel 2, which can be released, is at least 33% and in particular at least 50%, particularly preferably at least 66 or 75% or more. Preferably, the portion of the cross-sectional area of the filling channel 2, which can be completely released, is 80, 90 or 95% or more. The rotational movement of the closing head 6 relative to the wall of the filling channel 2 implies much less wear than the translational movement of the moving plates through the granular material, and when using industrial seals the granular material 5 is even better protected from spilling.

When installing, at least part of the closing head 6 is preferably located within a rectangular area as close as possible to the outer border and / or the cross section 21 of the filling module 25. In the case of feed turbines 27 rotating about a horizontal axis, at least part of the closing head 6 is preferably is located in the lower part 28 of the internal space 29 of the filling module 25. In the case of feed turbines 27 rotating about a vertical axis, at least part of the closing head 6 is preferably olagaetsya in the interior of the filling module 25 side.

This results in a very compact design, since at least part of the blades of the feed turbine 27 extends beyond the upper part or passes to the side of the closing head.

6. This allows you to create a compact design that requires little space in the radial direction in a rotary packaging machine 50.

Advantageously, the small diameter of the packaging machine 50 makes it possible to accommodate a larger number of automatically operating positioning equipment, which improves the overall productivity. The packing characteristics also increase, as the small peripheral speed of the packaging machine 50 provides greater accuracy in packaging and lower loads on the valve package 4, while the peripheral speed during filling is less than in the case of large-diameter packaging machines 50, and the channel flap 3 According to the invention, it provides reliable operation with a small diameter.

This design, in particular, allows replacing filling devices 1 according to the invention with other models of filling devices, which allows equipping not only new packaging machines 50, but also old machines with which new filling devices 1 in accordance with the invention can be equipped with inventive filling devices 1 during repair.

The filling device 1 may include a filling space 30, which is connected to the filling channel 2. The filling space 30 is preferably connected to the filling channel 2 by means of an elastic tube 31 necessary for the scissor valve to squeeze the elastic tube 31, which can be avoided. to measure the total weight, which is 4 030516

The filling station 30, with the valve bag 4 attached to it, is weighed during the filling process in order to accurately determine the weight to be filled.

A packaging machine 50 according to the invention contains at least one filling device 1, as described above. In addition, the packaging machine 50 may have a plurality of filling locations 1 and may be made in the form of a serial packaging machine (packaging machine). This type of packaging machine 50 is particularly preferably rotary and has around its circumference several filling devices 1 for filling valve packages 4 with a substance to be filled during rotation of the packaging machine 50.

In general, this invention provides a very useful filling device 1, which during operation is subject to minimal wear, closes the filling channel 2 reliably from the outer area and requires little space. This allows you to replace the known filling devices in order to increase the service life in combination with reliable operation. In addition, the installation dimensions may correspond to known filling devices in order to make a replacement without any problems.

This design assumes compactness and requires little space.

Claims (15)

CLAIM 1. A filling device (1) of a packaging machine for packing pulverized substances, such as cement, into a valve bag (4) hanging at the filling place (30) of the packaging machine, having a filling channel (2) and at least one controlled channel flap ( 3) to control the passage through the filling channel (2) of the bulk substance (5) with which the valve package (4) should be filled, and the channel flap (3) of the filling channel (2) contains at least partially located in the filling channel ( 2) a rotary closing head (6), an axis (7) turn and which is located across the filling channel (2) so that in the closed position of the channel flap (3) the filling channel (2) is completely closed, and in the open position the cross section of the filling channel (2) is completely open in at least one central part (34), characterized in that the closing head (6) passes through the wall (15) of the filling channel (2) and the closing head (6) is directed inwards and / or passes through the opposite wall (16) of the filling channel (2). 2. The filling device (1) according to claim 1, characterized in that the channel flap (3) is configured to be adjusted with the lever (9) and the actuator (10) from the closed (11) to at least one open position (12 , 13). 3. The filling device (1) according to the preceding paragraph, characterized in that the drive (10) includes the drive from the cylinder (14). 4. A filling device (1) according to any one of the preceding claims, characterized in that the closing head (6) comprises in the inner part (17) of the filling channel (2) at least one locking wall (18) located centrally about the axis ( 7) rotation, and the section (19) of the filling channel (2) with the open shut-off wall (18) depends on the angle of rotation (20) of the closing head (6). 5. A filling device (1) according to any one of the preceding claims, characterized in that the filling channel (2) has a rectangular cross section (21), at least in the region adjacent to the closing head (6). 6. Filling device (1), according to claim 4 or 5, characterized in that the filling channel (2) has in the area of the closing head (6) at least one hole (22) in which at least a part of the locking wall is located (18), while the latter is in the fully open position (13). 7. Filling device (1) according to claims 4-6, characterized in that the filling channel (2) has in the area of the closing head (6) at least one hole (23), which may include at least part of the locking wall (18) while the closure wall (18) is in the closed position (11). 8. A filling device (1) according to any one of the preceding claims, characterized in that the axis of rotation (7) is not centered on the filling channel (2) and / or the closing head (6) has at least one rounded section (8) in the form of a plug with a larger diameter than the transverse size of the filling channel (2). 9. A filling device (1) according to any one of the preceding claims, characterized in that it has a filling module (25) provided for obtaining an intermediate amount of a granular substance (5) required for packaging. 10. Filling device (1) according to claim 9, characterized in that the filling module has at least one feeding element (24), which, in particular, is made in the form of a feeding turbine (27). 11. A filling device (1) in accordance with the two previous paragraphs, characterized in that at least part (28) of the internal space (29) of the filling module (25), from where - 5 030516 comes out filling channel (2), made rounded, preferably from the feed turbine (27). 12. A filling device (1) according to any one of the three preceding claims, characterized in that, when installing the closing head (6), at least a part of the closing head (6) lies within a rectangular area and is located as close as possible to the outer part and / or to the cross section of the filling module. 13. A filling device (1) according to any one of the preceding claims, characterized in that the filling space (30) is connected to the filling channel (2). 14. The filling device (1) according to the preceding paragraph, characterized in that there is an elastic tube (31) between the filling place (30) and the filling channel (2). 15. A packaging machine (50) containing an automatic stacker (51) of valve packages (4) with a storage (53) of said packages and at least one filling device (1) according to claim 1. - 6 030516