JPH03240613A - Stripper device for hose bag packaging machine - Google Patents

Abstract

PURPOSE: To make a stripper device adaptable for a hose bag packaging machine having an arbitrary constitutive shape by connecting the stripper rod of the stripper device to a common closing device and connecting it to a transfer device for a relative movement along a sheet hose. CONSTITUTION: A sheet belt 1 is formed to make a hose 3 by at least one vertical heatseal jaw 2 and a material to be packaged is filled therein. Lateral heatseal jaws 4 oppositely arranged and moved in an appropriate fashion to form the bottom and the head range of a bag 10 is provided below the vertical heatseal jaw 2. And a stripper device 5 provided with mutually parallel two stripper rods 6, a closing device 8, and a moving device 9 is supported at the underside thereof. The stripper rods 6 are rotatably supported by a holder arm 7 and pressed on a bag material by the closing device 8 or separated therefrom. The rods are transferred in the longitudinal direction of the hose 3 by the moving device 9. The moving device 9 is provided with a crank structure 21 connected to a drive shaft 24 through the drive member 22 and the drive shaft 24 drives the arm 19 of a lateral heatseal jaw 4 through the driving member 23.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is characterized in that a strip sheet is formed into a hose using vertical heat-sealing jaws, and after filling, a bag is formed using horizontal heat-sealing jaws. A stripper device is arranged in the area of the sealing jaw, the stripper device having at least two slipper rods arranged on opposite sides of the hose, the stripper rods being movable along and towards the hose. , relates to a stripper device for a hose bag packaging machine of the type in which a slipper rod is mounted in the end region of a holding arm, each of which is pivotable for opening and closing the stripper rod.

PRIOR ART A device of the above type is known from US Pat. No. 4,663,917. Furthermore, West German Patent Application Publication No. 373
A similar heat sealing device is also disclosed in Japanese Patent No. 2033.

In the known device, the stripper rod is connected to a drive mechanism which is also used to move the lateral heat sealing jaws. Therefore, in practice, the stripper rod cannot be moved independently of the lateral heat sealing device.

This results in the disadvantage that the lateral heat-sealing unit with the lateral heat-sealing jaws must also have a stripper rod. This driving connection does not allow for any movement course in the stripper rod and the transverse heat-sealing jaws. This is particularly disadvantageous with regard to the movement of the lateral heat sealing jaws and stripper rod in the longitudinal direction of the seat hose. The lateral heat seal jaws must be moved together with the seat hose during the heat seal time without any relative movement between the heat seal jaws and the hose.

On the other hand, in the case of a stripper rod, relative motion between the seat hose and the stripper rod is unavoidable. Otherwise, the product to be packaged in the hose cannot be pushed into the bag and removed from the heat seal area of the hose.

Another disadvantage of the previously known configurations is that the configuration of the drive device of the lateral heat sealing jaws cannot be changed independently of the stripper device, so that the configuration of the drive device of the lateral heat sealing jaws cannot be changed independently of the stripper device, so that the lateral heat sealing The sealing jaw must be pivoted together with the stripper device. In this case, a circulating configuration of the lateral heat-sealing jaws is not possible. In this case, problems arise regarding the mass to be moved and the vibrations generated. Similarly, both the lateral heat seal jaws and the stripper device must be moved in a circulating cam path.
This also applies to the device known from DE 37 32 033 A1. Problems also arise in the circulation of these devices with respect to acceleration and deceleration caused by the relatively large circulating mass.

OBJECTS OF THE INVENTION The object of the present invention is to improve the stripper device of the type mentioned at the beginning so that it has a drive unit independent of the lateral heat-sealing jaws, has a simple structure, provides reliable operation, and can be configured in any desired configuration. It is an object of the present invention to provide a stripper device that can be used in a hose bag packaging machine of this type.

Means for Solving the Problems The characteristics of the stripper device solving the problems of the present invention are such that the stripper rods are combined with a common closing device and the slipper rods are connected with a moving device and a drive for relative movement along the seat hose. It means that they are connected.

Advantages of the Invention The stripper device of the invention has a number of advantages. According to the invention, the stripper device is combined with a common closing device, so that the closing movement can be carried out independently of the transverse heat-sealing jaws or other components of the packaging machine and is adapted to the respective space conditions. can be done. A further advantage of the invention is obtained in that the stripper rod is connected to a separate displacement device for the relative movement along the seat hose, that is to say for the scraping movement. The stripper device according to the invention therefore ensures that both movements of the stripper rod are controlled separately and adapted to the respective conditions of use. Furthermore, since the stripper device of the present invention is independent of the transverse heat-sealing jaws in terms of its drive, the device can be used both in hose-bag machines with rotating transverse heat-sealing jaws and in hose-bag machines with reciprocating transverse heat-sealing jaws. Available for use.

Because the stripper rod is movable along the seat hose relative to the cough seat hose, the stripping distance can be adapted to the particular conditions of use. In particular, relatively long slipping distances can be provided.

Additionally, the slipping distance can be varied and adjusted in a particularly simple manner.

A further advantage is that no additional dynamic loads occur on the drives of the transverse heat-sealing jaws. This is because the stripper does not circulate with the lateral heat seal jaws as is required in conventional rotating hose bag machines.

According to a particularly advantageous embodiment of the invention, the holding arms are designed in the form of scissor-shaped rods with a common pivot axis. In this embodiment, the movement of the stripper rod along the seat hose can be realized particularly easily. This is because in this case the stripping movement of the stripper rod can be carried out by moving only the support range of the pivot shaft.

Furthermore, the use of scissor-shaped rods has the advantage that -like movements of the holding arms are possible. In this case, the closure device can be constructed particularly simply.

Furthermore, it is particularly advantageous if the holding arms are mutually supported in the central region and are connected at their free ends to the closing device. This makes it possible to arrange the closure device outside the strip area, so that the overall dimensions of the device can be advantageously adapted to the particular conditions of use. The stripping device according to the invention can therefore also be used in very tight space conditions.A further particular advantage is that the holding arms are mutually supported in the central region and are connected at their free ends to the closing device. This places the closure device outside the slipping range and
The entire device is suitable in terms of its dimensions and is adapted to the particular conditions of use. The stripping device according to the invention can therefore be used in very confined spaces.

Furthermore, according to the invention, a wide variety of embodiments are possible for the closing device, which for example has a piston-cylinder arrangement and can be driven by compressed air. The closing device can also have a driver that engages the holding body from the side. This can be controlled, for example, mechanically via a cam disk or the like.

It is particularly advantageous for the closure device to have an elastic member, the action of which biases the stripper rod into the open position. In this case, it is only necessary to place the stripper rod against the bag material, and the stripper rod is opened automatically.

The invention will be explained with reference to the following drawings: The hose bagging machine shown in FIG. has been done. The metering hopper 15 is stocked with products to be packaged. A storage roll 16 made of a strip-shaped sheet is rotatably supported on the frame 14. The strip-like sheet 1 is guided via a shaped shoulder 17 and is fitted with at least one longitudinal heat-sealing girder 1-2.
The bottom shape of the hose 3 is formed by Hose 3 is filling pipe 1
8, by means of which the material to be packaged is filled into the hose 3. Horizontal heat sealing jaws 4 are provided below the vertical heat sealing jaws 2 and are positioned facing each other. The lateral heat-sealing jaws 4 are moved in a suitable manner to form the bottom and top areas of the bag 10. In the embodiment shown, the lateral heat-sealing jaws 4 are mounted in a circular manner on an arm 19. The circulating transverse heat-sealing jaws 4 are guided along an approximately zero-shaped guide track 20 such that the transverse heat-sealing jaws 4 are guided parallel to the hose 3 in the welding position.

A stripper device 5 is supported on the lower side of the lateral heat seal g4. Two nuclear stripper devices 5 are arranged parallel to each other.
It has two stripper rods 6. The stripper rod 6 can be attached to the hose 3 from the side. The stripper rod 6 is pivotably mounted on a holding arm 7.

The stripper device 5 has a closing device 8 and a movement device 9. The closing device 8 serves to bring the stripper rod 6 into contact with and away from the bag material.

In contrast, the movement device 9 serves to move the stripper rod 6 in the longitudinal direction of the hose 3.

FIG. 1 schematically shows how the transverse heat-sealing jaws 4 and the closing and movement device 8.9 are driven. The exercise device 9 includes a crank mechanism 21 , and the crank mechanism 21 is coupled to a drive shaft 24 via a drive member 22 . The core movement shaft 24 is transversely heated through the drive member 23! -4 arm 19 is driven.

Since the mode of operation of the hose bag machine is well known, a detailed explanation thereof will be omitted.

FIG. 2 shows in plan view the drive for the shaft of the heat-sealing jaw and the drive for the stripper system. The two shafts 25, 26 of the heat-sealing jaws are connected at their ends via gear wheels 27 and 28. The gears 2728 mesh with each other to close the heat seal jaw 4.
ensure synchronous movement of Furthermore, the heat-sealing jaw shaft 26 has a drive member 23, for example a gear wheel 29 connected to a chain, in order to enable the drive of the lateral heat-sealing jaws.
have. An arm 19 for holding the lateral heat sealing jaws 4 is fixed to the side of the heat sealing jaw shafts 25,26. Also shown in FIG. 2 is a guide track 20 along which the lateral heat-sealing jaws are guided.

3 and 4 schematically show an embodiment of a stripping device according to the invention. In this embodiment, the holding arms 7 are connected to each other at a common pivot axis 11, so that they form a scissor-shaped mechanism as a whole. A resilient member 13 engages the retaining arm 7 and biases the stripper rod 6 toward the open position.

In this open position, the hose 3 can be passed between the stripper rods 6. The rotating shaft 11 is supported by a carriage 30, and the carriage 30 is supported by a crank mechanism 2.
1, it can be moved up and down and stripping movements can be performed. In order to close the stripper rod 6, lateral guides are provided. The driver 12 is capable of reciprocating movement as indicated by the arrows. In order to actuate the holding arm 7, it is drivingly connected to the plunger 31.

FIG. 4 shows the device shown in FIG. 3 in an enlarged side view. From FIG. 4 it can be seen how the carriage 30 is supported on the guide rail 32. The guide rail 32 is supported on the jaw stroke side wall 33. The crank mechanism 21 allows the carriage 30 to move up and down along the guide rail 32, thereby imparting a stripping motion to the stripper rod 6. Shuttle 30
The vertical movement of the holding arm 7 also causes the vertical movement of the pivot shaft 11 of the holding arm 7. The holding arm 7 is pivotable laterally to open and close the stripper rod.

In FIG. 5, another embodiment of the stripper device of the invention is shown, with like reference numerals indicating like components. FIG. 6 shows a side view similar to FIG. 4. Fifth
The difference between the embodiment shown in FIGS. 6 and 6 and the embodiment shown in FIGS. 3 and 4 is that the closing device lf8 has a piston-cylinder arrangement, ie a compressed air cylinder 34. The free end region of the holding arm 7 is drivingly connected to the compressed air cylinder 34. As can be seen in FIG. 6, the carriage 30 is fixed to a piston rod 35 which can be actuated via a compressed air cylinder 36. Therefore the exercise device 9
has a compressed air cylinder 36 and a piston rod 35, whereas the closing device 8 is formed by a compressed air cylinder 34. The compressed air cylinder 36 thus serves both for the lifting movement of the stripper rod 6 and for the upwardly directed stripping movement.

FIG. 7 shows a further embodiment, viewed from a direction corresponding to FIGS. 4 and 6. The difference between this embodiment and the embodiment shown in FIG. 6 is that the exercise device 9 has two compressed air cylinders 37 and 38. A compressed air cylinder 37 serves to impart a stroke movement to the carriage 30 and thus to the stripper rod 6;
serves to provide a stripping movement along the seat hose 3. The stripper rod 6 is opened and closed by a compressed air cylinder 34.

In FIG. 8, the carriage 30 is fixed to a push rod 39, and the cough stick 39 is guided so as to be longitudinally movable on a bearing 40, which is also fixed to the side 9133. 6
An embodiment different from that of FIG. 7 is shown.

The lower end of the thrust rod 39 is drivingly connected to a cam body 41 driven by the drive device 22. The cam body 41 with the outer cam performs both a stroke movement and a stripping movement. Spring 4
2, the push rod 39 is biased against the cam body 41. Instead of a cam body with an outer cam, a cam body with a bowl-shaped cam can be used.

Another embodiment is shown in FIGS. 9 and 10. In this case as well, the same parts are given the same reference numerals, so a detailed explanation will be omitted. As in the embodiment shown in FIG.
2. A connecting rod 44 is rotatably supported on the crank disk or crank 21, and is pivotally connected to the carriage 30. The carriage 30 is mounted on a guide rail 32 as shown in FIG.
movably supported. Since the guide rail has a double Y-shaped cross section, the guide wheel 45 supported on the carriage 30 grips the guide rail 32 from both sides and is reliably guided along it. In this embodiment as well, the stripper rod 6 is opened and closed via a compressed air cylinder 34. Cough compressed air cylinder 34 is shown in more detail in side view in FIG. The compressed air cylinder 34 is pivoted to the free end of the holding arm 7, while the piston rod is pivoted to the other end, as shown in FIG. The compressed air cylinders 34 may be arranged horizontally or vertically or at an angle, as shown in FIG.

The crank 21 serves to carry out the stroke movement of the stripper rod 6, whereas a further compressed air cylinder 46 is supported on the carriage 30, the piston rod of which constitutes the pivot axis 11. It is connected to a holder 47 which is attached to the holder 47. This compressed air cylinder 49 serves to carry out the stripping movement.

The stripper rod 6 is rounded in the area of contact with the hose material to avoid damage to the hose material.

11 to 13 show further embodiments of the pivoting of the holding arm 7 and the compressed air cylinder 34. In FIGS.

In the embodiment shown in FIG. 11 a scissor-shaped mechanism is provided, whereas in the embodiment shown in FIG. 12 the pivot axes 11' and 11'' of the holding arm 7 are spaced apart from each other. and, in a suitable form, a separate holder, e.g. carriage 3.
Supported by 0. Fig. 13 shows the compressed air cylinder 34.
(for example a closing cylinder) is connected to the holding arm 7 via two additional links 48 which are pivoted to the lower end of the holding arm 7.

14 to 16 show further theoretically possible embodiments for constructing the holding arm 7, identical components being provided with the same reference numerals. FIG. 14 is drawn in accordance with the embodiment shown in FIG. The schematic diagram in FIG. 15 corresponds to the embodiment in FIG. 3, and FIG. 16 shows a variant embodiment of the embodiment shown in FIG. 15, in which case only one spring 13 is provided. There is.

The present invention is not limited to the illustrated embodiment, but can be implemented in various ways.

[Brief explanation of drawings]

The drawings show several embodiments of the invention, the first
Figure 2 is a schematic side view of the hose bag machine of the present invention, Figure 2 is a detailed view of the drive device for the shaft of the heat-n-roll jaw and a plan view of the stripper system according to the present invention, and Figure 3 is the stripper device of the present invention. 4 is a side view of the device shown in FIG. 3; FIG. 5 is a side view of another embodiment of the stripper device; FIG. 6 is a side view of the device shown in FIG. Figure 7 is the 4th
FIG. 8 is a partial side view of an alternative embodiment similar to FIG. 7; FIG. 9 is a partial side view of an alternative embodiment similar to FIG.
FIG. 10 is a schematic representation of an embodiment of the retaining arm and closing device, FIG. 11, FIG. 12 and FIG. 13 are similar to the figures. FIGS. 14, 15 and 16 are schematic side views of alternative embodiments of a retaining arm and closure device. FIGS. 1... Band-shaped sheet, 2... Vertical heat seal jaw 3
...Hose, 4...Horizontal heat seal jaw 5...
Stripper device, 6... Stripper rod, 71.・
Retaining arm, 8... Closing device, 9... Movement device, 1
0...Bag, 14...Frame, 15...Measuring ho 1
．． C16... Storage roller, 18... Filling pipe, 19...
... Arm, 20... Guide track, 21... Crank mechanism, 22... Drive member, 23... Drive member, 24
... Drive shaft, 25.26 ... Axis, 27.28 ...
Gear, 29...Gear, 30...Reciprocating carriage, 31...
Thrust rod, 32... Guide rail, 34... Compressed air cylinder, 35... Piston rod, 36, 37.38...
・Compressed air cylinder, 39... Thrust rod, 40... Bearing, 41... Cam body, 42... Spring, 43... Drive gear, 44... Connecting rod, 45... Guide car, 4
6... Compressed air cylinder, 47... Holding body. 11 Fig, 4 0 7 Fig. 14 Fig, 16

Claims (1)

[Claims] 1. A strip-shaped sheet (1) is formed into a hose (3) using vertical heat-sealing jaws (2), and after filling, a bag is formed using horizontal heat-sealing jaws (4). A stripper device (5) is installed in the range of the lateral heat seal jaw (4).
) is arranged, and the stripper device (5) is connected to the hose (3).
at least two slipper rods (6) arranged on opposite sides of the slipper rod (6), the stripper rod (6) being movable along and towards the hose (3); 6) are respectively mounted in the end regions of holding arms (7) which are pivotable for opening and closing the stripper rods (6); (6) are connected to a common closure device (8), and the slipper rod (6) is drivingly connected to the displacement device (9) for relative movement along the seat hose (3). A stripper device for hose wrapping machines. 2. Stripping device according to claim 1, wherein the holding arms (7) are configured in the form of scissor-shaped rods with a common pivot axis (11). 3. Stripping device according to claim 2, characterized in that the holding arms (7) are mutually supported in a central region and are connected at their free ends to a closing device (8). 4. Stripper device according to claim 1, wherein the closing device (8) has a piston-cylinder device. 5. Stripper device according to claim 1, wherein the closing device (8) has a driver (12) that engages the holding arm (7) from the side. 6. Stripper device according to claim 5, wherein the driver (12) is actuatable by a cam track member. 7. Any one of claims 1 to 6, wherein the closure device (8) has a member (13) biasing the stripper rod (6) in a direction that brings it into the open position. Stripper device as described. 8. The retaining arm (7) and the closing device (8) are connected to the moving device (9).
8. The stripper device according to claim 1, wherein the stripper device is movable in the direction of the longitudinal axis of the hose (3) by means of the stripper device. 9. Stripper device according to any one of claims 1 to 8, characterized in that the moving device (9) has a crank mechanism. 10. Stripper device according to claim 1, wherein the displacement device (9) has a piston-cylinder device. 11. Stripper device according to one of the preceding claims, characterized in that the displacement device (9) has a cam track member. 12. The moving device (9) has a first device for reciprocating movement and a second device for stripping movement,
Stripper device according to any one of claims 1 to 11. 13. The stripper device of claim 12, wherein the first device and the second device each have a piston cylinder device.