Method for replacing a hose roll

Abstract

The invention relates to a method for replacing hose rolls, comprising the following method steps: unwinding a first hose (3) of a first hose roll (2) by means of a production device (1), the first hose roll (2) being accommodated in the production device (1), and an opening tool (6) being arranged in an interior (7) of the first hose (3); providing a second hose roll (4) having a second hose (5); connecting an end section (8) of the second hose (5) to the first hose (3); introducing an opening tool (6) from the first hose (3) into the interior (16) of the second hose (5); wherein, when the end section (8) of the second hose (5) is connected to the first hose (3), the exposed inner side (9) of the end section (8) of the second hose (5) is connected one above the other to the outer side (10) of the first hose (3); the opening tool (6) is inserted into the second hose (5), and wherein the separation of the first hose (3) is carried out along a separation point (11), the separation being carried out after the connection of the second hose (5) to the first hose (3) and before the insertion of the opening tool (6) into the second hose (5), the separation point (11) being arranged between a connection point (12) of the first hose (3) to the second hose (5) and an opening (13) of an end section (8) of the second hose (5), and wherein the opening tool (6) is inserted into the second hose (5). After separation, the opening (13) of the end section of the second hose (5) faces the opening (14) of the end section (15) of the first hose (3).

Description

Technical Field

[0001] The present invention relates to a method for replacing a hose reel, comprising the following method steps: unwinding a first hose of a first hose reel by means of a manufacturing device, wherein the first hose reel is accommodated in the manufacturing device and an opening tool is arranged inside the first hose; providing a second hose reel with a second hose; connecting an end section of the second hose to the first hose; and introducing the opening tool from the first hose into the interior of the second hose. Background Art

[0002] A manufacturing device for producing automatable filling valve bags from PE film or PP fabric is equipped with hose reels, the hoses of which are unwound as endless material from the hose reels and processed into bags by the relevant manufacturing device and separated.

[0003] During the production of the hoses provided on the hose reels, so-called blockages may occur inside the hoses, i.e., local adhesion of the mutually overlapping layers of the flat hoses to each other. These blockages can be generated, for example, by manufacturing steps during hose production, such as coating or perforating the hoses.

[0004] The blockages of the hoses are loosened or broken by means of an opening tool of the above manufacturing device, wherein the opening tool is arranged inside the hose and can be supported in a floating manner.

[0005] Therefore, during reel replacement, the opening tool must be inserted or introduced from the first hose present in the manufacturing device into the new second hose. In the case of reel replacement, for this purpose, the hose end of the first hose is manually introduced into the hose end of the second hose and glued there, so that the hose ends overlap or are nested with each other. In this way, the second hose can be pulled into the manufacturing device by means of the first hose and the opening tool can be transferred from the first hose to the second hose. Due to this transfer of the opening tool and the necessary mutual gluing of the hoses, reel replacement is performed manually in such manufacturing devices.

[0006] Such reel replacement can take two to three minutes and is performed, for example, three to four times per hour depending on the hose length and the manufacturing speed. During manual reel replacement, the manufacturing device stops. Summary of the Invention

[0007] In this context, the technical problem to be solved by the present invention is to describe a method for automatically replacing a hose reel with an opening tool in a manufacturing device. The above technical problem is solved by the method according to claim 1. Further embodiments of the present invention follow from the dependent claims and the following description.

[0008] The present invention relates to a method for replacing a hose reel, which comprises the following method steps: unwinding a first hose of a first hose reel by means of a manufacturing device, wherein the first hose reel is accommodated in the manufacturing device, and wherein an opening tool is arranged inside the first hose; providing a second hose reel with a second hose; connecting an end section of the second hose to the first hose; and introducing the opening tool from the first hose into the interior of the second hose. The method is characterized in that when connecting the end section of the second hose to the first hose, the exposed inner side of the end section of the second hose is connected in an overlapping manner with the outer side of the first hose. The method is further characterized in that the first hose is separated along a separation site, wherein the separation is carried out after the connection of the second hose to the first hose and before the introduction of the opening tool into the second hose, wherein the separation site is arranged between the connection site of the first hose and the second hose and the opening of the end section of the second hose, and wherein after the separation, the opening of the end section of the second hose faces the opening of the end section of the first hose.

[0009] Since the inner side of the first hose is exposed in the region of the end section, the second hose can be simply connected in an overlapping manner with the inner side of the second hose by unilateral pressing, without having to insert the second hose into the hose opening of the second hose. Thus, the first and second hoses can be connected to each other in an extremely simplified and automated manner, wherein the overlapping connection further enables the opening tool to be transferred from the first hose into the second hose.

[0010] Automated execution of the replacement of the hose reel can be achieved without stopping the manufacturing device during the continuous operation of the manufacturing device.

[0011] When currently referring to the "inner side" of the hose, this relates to the mutually facing sides of two flat layers of the relevant hose inside the hose. Thus, the exposed inner side is not covered by the opposite layer of the hose in the exposed area.

[0012] The inner side of the end section of the second hose to be connected to the first hose can be at least partially exposed before connecting to the first hose, wherein a part of the end section of the second hose is removed, and / or wherein a part of the end section of the second hose is cut and folded. In particular, at least one of the opposite layers of the flat hose is removed at least section by section to expose the inner side of the hose covered by this layer.

[0013] Exposing the inner side of the end section of the second hose can be a manual, preparatory method step before transferring the second hose reel to the manufacturing device. Exposing the inner side of the end section of the second hose can be an automated preparatory method step before transferring the second hose reel to the manufacturing device. Exposing the inner side of the end section of the second hose can be an automated method step that can be carried out within the manufacturing device.

[0014] It can be provided that a hose reel is provided as the second hose reel which already has the necessary exposed inner side of the end section.

[0015] The end section of the second hose can have a cutting edge and / or a fold that is inclined with respect to the unfolding direction, wherein the inclination is less than 90°. The cutting edge and / or the fold can limit the opening of the second hose. In other words, the end section of the second hose can be configured as a pocket for accommodating and inserting an opening tool.

[0016] The end section of the second hose can have a web extending from the opening of the second hose to the connecting point of the first hose and the second hose, wherein the web has an exposed inner side of the end section of the second hose and is connected to the outer side of the first hose.

[0017] The opening of the first hose can be at a distance from the opening of the second hose. The second hose is therefore not introduced into the opening of the first hose with its end section having the opening, and vice versa. Thus, during the transfer from the first hose to the second hose according to the invention, the opening tool is not at least temporarily completely surrounded by the hose material, but is temporarily and at least partially exposed in the region of the distance between the openings.

[0018] In order to improve the introduction of the opening tool from the first hose into the second hose, it can be provided that the opening tool is tilted by means of an adjustment device before being introduced into the second hose and / or the opening tool is narrowed in the area facing the second hose. In particular, the end of the end section of the opening tool facing the second hose is tilted in the direction of the exposed inner side of the second hose so that the opening tool can rest reliably on the exposed inner side and cause the opening of the second hose to widen.

[0019] In order to improve the introduction of the opening tool from the first hose into the second hose, it can be arranged that the end section of the second hose or its opening is kept open by compressed air before and / or during the introduction of the opening tool, and / or the end section of the second hose or its opening is kept open by a mechanical device such as a roller, a roller, etc. before and / or during the introduction of the opening tool.

[0020] It can be provided that the first hose drives the second hose along after being connected, so that the unfolding of the first hose transitions to the unfolding of the second hose without interruption.

[0021] The hose roll can be replaced alternately from a first side of the hose plane and from a second side facing away from the first side, wherein the hose plane is expanded by the correspondingly unrolled hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Next, the present invention will be described in more detail based on the accompanying drawings showing embodiments. Schematically:

[0023] Figure 1 The manufacturing apparatus at a first time point during roll replacement is shown in a side view;

[0024] Figure 2 The manufacturing apparatus in Figure 1 at a second time point during roll replacement is shown;

[0025] Figure 3 The manufacturing apparatus in Figure 1 at a third time point during roll replacement is shown.

[0026] Figure 4 The end section of the hose with the exposed inner side is shown in a top view. DETAILED DESCRIPTION

[0027] Figure 1 The manufacturing apparatus 1 is shown, in which a first hose reel 2 with a first hose 3 and a second hose reel 4 with a second hose 5 are accommodated.

[0028] The manufacturing apparatus 1 has a floatingly supported opening tool.

[0029] According to Figure 1 , the unwinding of the first hose 3 of the first hose reel 2 is carried out by means of the manufacturing apparatus 1, wherein the first hose reel 2 is accommodated in the manufacturing apparatus, and wherein the opening tool 6 is arranged in the interior 7 of the first hose 3.

[0030] In Figure 1 the provision of the second hose reel 4 with the second hose 5 is additionally shown.

[0031] In order to replace from the first hose reel 2 to the second hose reel 4, first the connection of the end section 8 of the second hose 5 to the first hose 3 is carried out. Here, the exposed inner side 9 of the end section 8 of the second hose 5 is connected to the outer side 10 of the first hose 7 in an overlapping manner.

[0032] Furthermore, the separation of the first hose 3 is carried out along the separation site 11.

[0033] This separation is carried out after the connection of the second hose 5 to the first hose 3 and before the introduction of the opening tool 6 into the second hose 5. The separation site 11 is arranged between the connection site 12 of the first hose 3 and the second hose 5 and the opening 13 of the end section 8 of the second hose 5.

[0034] After the separation, the opening 13 of the end section 8 of the second hose 5 faces the opening 14 of the end section 15 of the first hose 3 ( Figure 2 ). The opening 13 has a spacing relative to the opening 14.

[0035] Figure 3It shows that the opening tool 6 is introduced from the first hose 3 into the interior 16 of the second hose 5. The opening tool 6 can be tilted by means of the adjusting device 20 before being introduced into the second hose 5.

[0036] Figure 4 The end section 8 of the second hose 5 is shown in a top view of the exposed inner side 9 of the second hose 5. In order to expose the inner side 9, the second hose 5 is partially cut and folded along its longitudinal edge 17 in the region of its end section 8, thereby forming a folding part 18 and a tab 19.

[0037] The folding part 18 limits the opening 13 of the end section 8 of the second hose 5. The folding part 18 is inclined with respect to the unfolding direction 21, wherein the inclination is less than 90°.

[0038] List of reference numerals

[0039] 1 Manufacturing device

[0040] 2 First hose reel

[0041] 3 First hose

[0042] 4 Second hose reel

[0043] 5 Second hose

[0044] 6 Opening tool

[0045] 7 Interior of the first hose 3

[0046] 8 End section of the second hose 5

[0047] 9 Exposed inner side of the second hose 5

[0048] 10 Outer side of the first hose 3

[0049] 11 Separation site

[0050] 12 Connection site

[0051] 13 Opening of the second hose 5

[0052] 14 Opening of the first hose 3

[0053] 15 End section of the first hose 3

[0054] 16 Interior of the second hose 5

[0055] 17 Longitudinal edge of the end section 8

[0056] 18 Folding part

[0057] 19 Tab

[0058] 20 Adjusting device

[0059] 21 Expansion direction.

Claims

1. A method for replacing a hose reel, comprising the following method steps: - Unwinding the first hose (3) of the first hose reel (2) by means of a manufacturing device (1), wherein, The first hose reel (2) is accommodated in the manufacturing device (1), and an opening tool (6) is arranged inside (7) the first hose (3); - Provide a second hose reel (4) with a second hose (5); - Connect an end section (8) of the second hose (5) to the first hose (3); - Introduce the opening tool (6) from the first hose (3) into the interior (16) of the second hose (5); It is characterized in that - When connecting the end section (8) of the second hose (5) to the first hose (3), connect the exposed inner side (9) of the end section (8) of the second hose (5) to the outer side (10) of the first hose (3) in an overlapping manner; and - Separate the first hose (3) along a separation site (11), - wherein the separation is carried out after the connection of the second hose (5) to the first hose (3) and before the introduction of the opening tool (6) into the second hose (5), - wherein the separation site (11) is arranged between the connection site (12) of the first hose (3) and the second hose (5) and the opening (13) of the end section (8) of the second hose (5), and - wherein, after the separation, the opening (13) of the end section of the second hose (5) faces the opening (14) of the end section (15) of the first hose (3).

2. The method according to claim 1, characterized in that - The inner side (9) of the end section (8) of the second hose (5) to be connected to the first hose (3) before connection - wherein a part of the end section (8) of the second hose (5) is removed, and / or - wherein a part of the end section (8) of the second hose (5) is cut and folded.

3. The method according to claim 2, characterized in that - The end section (8) of the second hose (5) has a cutting edge and / or a fold (18) inclined with respect to the unfolding direction (21), - wherein the inclination is less than 90°.

4. The method according to any one of the preceding claims, characterized in that - The end section (8) of the second hose (5) has a tab (19), - which extends from the opening (13) of the second hose (5) up to the connection site (12) of the first hose (3) and the second hose (5), - wherein the tab (19) has the exposed inner side (9) of the end section (8) of the second hose (5) and is connected to the outer side (10) of the first hose (3).

5. The method according to any one of the preceding claims, characterized in that, The opening (14) of the first hose (3) has a spacing relative to the opening (13) of the second hose (5).

6. The method according to any one of the preceding claims, characterized in that, - Tilt the opening tool (6) before introducing it into the second hose (5) by means of an adjusting device (20) and / or - Narrow the opening tool (6) in the area facing the second hose (5).

7. The method according to any one of the preceding claims, characterized in that - Keep the end section (8) of the second hose (5) open by compressed air before and / or during the introduction of the opening tool (6), and / or Before and / or during the introduction of the opening tool (6), the end section (8) of the second hose (5) is held open by mechanical means such as drums, rollers or the like.

8. The method according to any one of the preceding claims, characterized in that After the connection, the first hose (3) drives the second hose (5) so that the unfolding of the first hose (3) is seamlessly transferred to the unfolding of the second hose (5).

9. The method according to any one of the preceding claims, characterized in that - the hose reel is replaced alternately from a first side of the hose plane and from a second side facing away from the first side, - wherein the hose plane is expanded by the correspondingly unfolded hose.

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