A paper supporting roller for longitudinal sealing in a filling machine

Abstract

The utility model relates to a paper supporting roller, disclose a kind of paper supporting roller for longitudinal seal in filling machine, including the roller body rotationally arranged on mounting frame, still including the limiting sheet of fixedly sleeved on the roller body, the distance between the roller body and bag body edge is less than the radius of limiting sheet, bag body edge and limiting sheet abutment.The utility model can limit the deviation of bag body along the circumferential direction of infusion tube, solve the problem that excess glue, paper scraps are adhered to the gap and jam the roller, resulting in glue scraping;The utility model is suitable for milk filling or other industries that need to fill liquid.

Description

Technical Field

[0001] This utility model relates to a paper-supporting roller, specifically a paper-supporting roller for longitudinal sealing in a filling machine. Background Technology

[0002] The specific process for longitudinal sealing of the bag in a milk filling machine is as follows: The paper-shaped bag unfolds from the roll and enters the forming area of ​​the filling machine, at which point the bag is laid flat. Then, a polypropylene strip (PP strip) is pre-attached to one edge of the bag. For example... Figure 1 As shown, PP strip 7, as a heat-sealing layer, becomes the key medium for longitudinal sealing due to its high temperature resistance and easy melting properties. The bag body 8, in a flat state, will curl and adhere to the outer wall of the filling tube 6. At this time, the paper-supporting rollers installed on the mounting frame 9 mechanically press the two sides of the bag body 8 to ensure that the ends of the bag body 8 are aligned and remain flat. Finally, the other side of the bag body 8 (i.e., the side without PP strip 7) overlaps and adheres to the side where PP strip 7 is located, forming a longitudinal seam.

[0003] The existing paper guide roller structure is as follows Figure 1 As shown, it includes a roller body 1 made of polytetrafluoroethylene, which is rotatably mounted on a mounting frame 9. The roller body 1 is used to mechanically press the two sides of the bag body 8. After the existing roller body 1 is connected to the mounting frame 9, there is a gap 4 between the two.

[0004] However, because of its small diameter, roller 1 can only prevent the two sides of the bag 8 from tilting away from the filling pipe 6, but it cannot restrict the bag 8 from shifting around the filling pipe 6. Once the bag 8 shifts, the side where the PP strip 7 is located will shift to the other side. At this time, the excess glue on the PP strip 7 will stick to the gap 4. Since the bag 8 is made of paper, there will be paper scraps on its surface. Once there is excess glue in the gap 4, the paper scraps will stick and accumulate in the gap 4. Over time, the accumulation of paper scraps in the gap 4 will jam the roller 1 and prevent the roller 1 from rotating normally. In this case, the roller 1 will scrape the glue on the side where the PP strip 7 is located, and the machine must be stopped for cleaning. Utility Model Content

[0005] The present invention aims to provide a paper-supporting roller for longitudinal sealing in a filling machine, so as to solve the problem in the prior art that the packaging material shifts circumferentially along the filling tube, causing excess glue to stick into the gap, which in turn causes the gap to be filled with paper scraps, resulting in the roller getting stuck and scraping the glue.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A longitudinal sealing paper roller in a filling machine includes a roller body rotatably mounted on a mounting frame, and a limiting piece fixedly sleeved on the roller body. The distance between the central axis of the roller body and the edge of the bag body is less than the radius of the limiting piece, and the edge of the bag body abuts against the limiting piece.

[0008] As a limitation of this utility model: the limiting piece is disposed on the side of the roller body near the side of the bag body where the PP strip is not attached, and the side of the bag body where the PP strip is not attached abuts against the limiting piece.

[0009] As a further limitation of this utility model: the limiting piece is made of stainless steel.

[0010] As another limitation of this utility model, it also includes a sleeve integrally formed with the limiting piece. The sleeve is fixedly sleeved on the roller body, the limiting piece is located between the mounting frame and the sleeve, and the sleeve is used to press the side of the bag body with the PP strip attached.

[0011] As a further limitation of this utility model: the sleeve is made of stainless steel.

[0012] By adopting the above technical solution, the beneficial effects achieved by this utility model compared with the prior art are as follows:

[0013] This invention improves upon existing paper-supporting rollers by adding a limiting piece. The distance between the roller body and the edge of the bag body is less than the radius of the limiting piece, and the edge of the bag body abuts against the limiting piece, thereby limiting the bag body's displacement along the circumference of the filling tube. The limiting piece is located on the roller body near the side of the bag body without the PP strip. When the bag body tends to shift counterclockwise along the circumference of the filling tube, the side of the bag body without the PP strip abuts against the limiting piece, limiting its displacement. When there is a tendency to shift clockwise along the circumference of the filling tube, the limiting piece can block the side of the bag body with the PP strip, preventing residual adhesive on the PP strip from entering the gaps, thus preventing paper scraps from adhering to the gaps and jamming the roller body, causing adhesive scraping problems.

[0014] In summary, this invention can limit the displacement of the bag body along the circumference of the filling tube, and solves the problem of excess glue and paper scraps adhering to the gaps and getting stuck in the roller, causing glue scraping. This invention is applicable to milk filling or other industries that require liquid filling. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 A schematic diagram of the existing paper-supporting roller application structure;

[0017] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 3Schematic diagram of the application structure of the embodiment of the present utility model;

[0019] Figure 4 Top view of the application structure of the embodiment of the present utility model (the mounting frame is not shown).

[0020] In the figure: 1 - roller body, 2 - limiting piece, 3 - sleeve, 4 - gap, 5 - bag edge, 6 - perfusion pipe, 7 - PP strip, 8 - bag body, 9 - mounting frame. Specific embodiments

[0021] The following describes the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and do not constitute a limitation to the present utility model.

[0022] The orientation terms or positional relationships such as "left" and "right" in the embodiments are based on the orientation relationship in the drawings of the specification of the present utility model Figure 3 which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation to the content protected by the present utility model.

[0023] As Figures 2-4 shown, this embodiment includes a roller body 1 and a limiting piece 2. The limiting piece 2 is used to limit the circumferential offset of the bag body 8 along the perfusion pipe 6, so as to prevent the remaining glue and paper scraps on the PP strip 7 from adhering to the gap 4.

[0024] The roller body 1 is made of polytetrafluoroethylene and has a cylindrical structure. The structures such as the roller body 1 being rotationally connected to the mounting frame 9 are all prior arts and will not be described in detail in this embodiment.

[0025] The main improvement of this embodiment lies in adding a limiting piece 2. The limiting piece 2 is fixedly sleeved on the roller body 1. In this embodiment, the limiting piece 2 is in a circular ring structure and is made of stainless steel material. Its inner diameter is equal to or slightly smaller than the diameter of the roller body 1, so that the limiting piece 2 can be clamped on the roller body 1. As Figure 4 shown, the distance between the central axis of the roller body 1 and the bag edge 5 is less than the radius of the limiting piece 2, that is, L1 < r1, and the bag edge 5 abuts against the limiting piece 2. Specifically, the limiting piece 2 is arranged on the roller body 1 on the side close to the bag body 8 where the PP strip 7 is not pasted. Here, the side of the bag body 8 where the PP strip 7 is not pasted refers to the bag edge 5 at the left end of the bag body 8, and the bag edge 5 at the left end of the bag body 8 abuts against the limiting piece 2.

[0026] When the bag body 8 has a tendency to move counterclockwise along the circumferential direction of the perfusion pipe 6, as Figure 4The solid line in the image indicates that the side of the bag body 8 without the PP strip 7 (i.e., the left edge 5 of the bag body 8) abuts against the limiting piece 2, restricting its offset; when there is a tendency to offset clockwise along the circumference of the infusion tube 6, such as Figure 4 The dotted line in the image indicates that the limiting piece 2 can block one side of the PP strip 7 on the bag body 8 (i.e., the right edge 5 of the bag body 8), preventing excess glue on the PP strip 7 from entering the gap 4, thereby preventing paper scraps from adhering to the gap 4 and getting stuck in the roller body 1, causing glue scraping problems.

[0027] Of course, the limiting piece 2 can also be set on the side of the roller 1 near the PP strip 7 attached to the bag body 8 (i.e., at the right edge 5 of the bag body 8). The right edge 5 of the bag body 8 abuts against the limiting piece 2. When the bag body 8 has a tendency to shift clockwise along the circumference of the filling pipe 6, such as Figure 4 The dotted line in the image indicates the arrow. The limiting piece 2 can also block one side of the PP strip 7 on the bag body 8, preventing excess adhesive on the PP strip 7 from entering the gap 4.

[0028] Furthermore, such as Figure 2 As shown, this embodiment also includes a sleeve 3 integrally formed with the limiting piece 2, and the sleeve 3 is fixedly sleeved on the roller body 1, as shown. Figure 3 As shown, the limiting piece 2 is located between the mounting bracket 9 and the sleeve 3. In this embodiment, the sleeve 3 is made of stainless steel, and its inner diameter is equal to or slightly smaller than the diameter of the roller body 1, so that the sleeve 3 can be locked onto the roller body 1 for fixation. The sleeve 3 is added to increase the diameter of the roller body 1, so that the sleeve 3 can press the side of the bag body 8 with the PP strip 7 attached, further restricting the circumferential displacement of the bag body 8 along the filling tube 6. Furthermore, both the sleeve 3 and the limiting piece 2 are made of stainless steel, which is low in cost. If residual adhesive and paper scraps adhere to the sleeve 3 and the limiting piece 2, they can be removed and replaced or cleaned, which is more convenient than disassembling the roller body 1.

[0029] It should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A longitudinal sealing roller for a filling machine, comprising a roller body rotatably mounted on a mounting frame, characterized in that, It also includes a limiting piece fixedly sleeved on the roller body, the distance between the central axis of the roller body and the edge of the bag body is less than the radius of the limiting piece, and the edge of the bag body abuts against the limiting piece.

2. The longitudinal sealing paper roller in a filling machine according to claim 1, characterized in that, The limiting piece is set on the side of the roller body near the side of the bag body where the PP strip is not attached, and the side of the bag body where the PP strip is not attached abuts against the limiting piece.

3. The longitudinal sealing paper roller in a filling machine according to claim 2, characterized in that, The limiting plate is made of stainless steel.

4. A longitudinal sealing paper roller in a filling machine according to any one of claims 1-3, characterized in that, It also includes a sleeve that is integrally set with the limiting piece. The sleeve is fixedly fitted onto the roller body, and the limiting piece is located between the mounting frame and the sleeve. The sleeve is used to press the side of the bag body with the PP strip attached.

5. A longitudinal sealing paper roller in a filling machine according to claim 4, characterized in that, The sleeve is made of stainless steel.

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