Built-in forming mechanism suitable for edge drawing treatment of polymer laminated plastic woven bag

Abstract

The utility model relates to a built-in forming mechanism suitable for edge drawing treatment of a polymer laminated plastic woven bag, which comprises a built-in supporting plate, and four supporting wheels capable of opening the bag into a rectangle are arranged on a tail guide section of the built-in supporting plate. The built-in supporting wheel is used for replacing original sliding friction to be changed into rolling friction, transverse rubbing of a displacement wheel is not needed any more, longitudinal and transverse tensile deformation is not generated, friction resistance between a packaging bag and a forming device is made to be as small as possible, deviation is prevented, blocking is avoided, and the bag which is flat and attractive in appearance and meets the size requirement is manufactured. And the size of the packaging bag can be quickly adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of folding edges in the production of plastic woven bags, in particular to a built-in forming mechanism suitable for edge drawing processing of polymer laminated plastic woven bags. Background Art

[0002] Woven bags are widely used as packaging containers for fertilizers, chemical products and other items. In the production process of laminated woven bags, not only the production quality of the woven bags and the characteristics of the woven bags during use should be considered, but also the appearance design of the woven bags and the high applicability of the woven bags should be paid attention to. Therefore, when producing woven bags, not only the sealing design of the woven bags should be considered, but also the edge design of the woven bags should be considered. The woven bags will be edged, which is what we often call folded M edges. The advantage of this folding edge is that when the product is loaded into the bag, the two sides will be stretched open, which not only has a larger storage capacity than ordinary woven bags, but also makes the bag more three-dimensional after holding things, making the packaging more beautiful. Therefore, laminated plastic woven bags with M edges are a very widely used packaging container. The laminated plastic woven bag with M edge is mainly made by a built-in inserting edge former, which mainly includes two parts, namely a built-in support plate and an external inserting edge wheel. The woven bag roll is transported to the forming device part through a unwinding device and a guiding conveying roller. The inside of the cylindrical bag is an inner bracket (built-in support plate), and the two sides are inserting edge forming wheels (external inserting edge wheels). During the transportation of the bag, the two sides gradually become M-shaped, completing the forming process. For example, the Chinese utility model patent "Cylindrical Plastic Woven Bag Shifting V-shaped Edge Folding Machine", publication number CN2361462, includes a folding device, a traction device, and a support mechanism installed on the basis of a frame, and a shifting device is installed on both sides of the front section of the folding device. On both sides of the front section of the inner bracket are installed a displacement wheel with the wheel axis deflected at a certain angle and in opposite directions to the horizontal line of the plastic woven bag. It is the existing common lamination plastic woven bag folding equipment, which needs to be displaced at a certain angle by the guide wheel and pulled horizontally, so that the tubular bag can form folded edges on both sides symmetrically, which is prone to longitudinal and lateral stretching deformation, and is also prone to deviation. After the size of the packaging bag is adjusted, the worker repeatedly adjusts the angle of the guide wheel to adapt to the size, and the rigid friction between the tubular bag and the inner bracket (built-in support plate) surface is easy to cause wear on the inner surface of the bag. Utility Model Content

[0003] In view of the above problems, the utility model provides a built-in forming mechanism which can quickly adapt to the size of packaging bags and is not prone to deformation or deviation by improving the built-in support plate, and is suitable for edge drawing processing of polymer laminated plastic woven bags.

[0004] The specific technical solution of the utility model is: a built-in forming mechanism suitable for edge drawing processing of polymer film-coated plastic woven bags, including a built-in support plate, and a tail guide section of the built-in support plate is provided with 4 support wheels that can open the bag into a rectangle.

[0005] Further, preferably, two groups of mounting holes are correspondingly opened on the upper and lower end surfaces of the tail guide section of the built-in support plate, the mounting holes are symmetrically arranged, and the support wheel is installed in the mounting hole through the support wheel shaft.

[0006] Furthermore, preferably, it further comprises a round steel guide rod, and a pair of round steel guide rods are installed on one end of the built-in support plate close to the support wheel.

[0007] Further, preferably, the round steel guide rod comprises a support rod segment connected to the built-in support plate, and a clamp-shaped front guide segment is correspondingly arranged on the support rod segment.

[0008] Furthermore, preferably, two tail guide segments are symmetrically arranged on the left and right, and the two tail guide segments are connected by a connecting column.

[0009] The beneficial effects of the utility model are as follows: the original sliding friction is replaced by rolling friction with the built-in support wheel, the displacement wheel is no longer needed to perform lateral rubbing, longitudinal and lateral tensile deformation is not generated, and the friction resistance between the packaging bag and the former is minimized, deviation is prevented, jamming is not caused, and bags with smooth and beautiful appearance and meeting size requirements are produced; the bag shape and size can be quickly adapted to the adjustment of the packaging bag shape and size. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is the front view of the built-in molding mechanism of the utility model;

[0011] Figure 2 It is a top view of the built-in forming mechanism of the utility model, wherein the supporting wheel is removed;

[0012] Figure 3 for Figure 1 The sectional view of AA in the middle shows the bag and the forming wheel;

[0013] Figure 4 It is a three-dimensional schematic diagram of a built-in support plate of the built-in forming mechanism of the utility model;

[0014] Figure 5 It is a schematic diagram of the installation of the connecting column of the built-in forming mechanism of the utility model.

[0015] In the figure: 1-built-in support plate, 101-guide section, 102-forming section, 103-connecting column, 2-mounting hole, 3-support wheel, 301-support wheel shaft, 4-round steel guide rod, 401-front guide section, 402-support rod section, 5-forming wheel, 6-bag. DETAILED DESCRIPTION

[0016] In order to make the technical problems and technical solutions solved by the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0017] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] like Figures 1 to 4 As shown, a built-in forming mechanism suitable for edge drawing processing of polymer laminated plastic woven bags includes a built-in support plate 1. The built-in support plate 1 is an existing structure, with a tail guide section 101 and a front forming section 102. In this embodiment, the integrated tail guide section 101 is divided into two sections that are symmetrically assembled on the left and right.

[0020] The tail guide section 101 of the built-in support plate 1 is provided with four support wheels 3 which can open the bag into a rectangular shape. Figure 3 As shown, two groups of mounting holes 2 are correspondingly opened on the upper and lower end surfaces of the tail guide section 101 of the built-in support plate 1, and the mounting holes 2 are symmetrically arranged on the left and right. The support wheel 3 is installed in the mounting hole 2 through the support wheel shaft 301.

[0021] Furthermore, by setting a thread at the end of the support wheel shaft 301, and the mounting hole 2 is a corresponding threaded hole, a quick detachable installation can be achieved, and the support wheel shaft 301 with different shaft lengths can be replaced to quickly adapt to the size of the packaging bag, that is, by adjusting the length of the two sides of the rectangle ( Figure 3 The length of H in the middle) satisfies the adjustment of the bag type; further, Figure 5 As shown, the connecting column 103 of the built-in support plate 1 adopts a detachable threaded end and a nut fastening method, and the rectangular side length ( Figure 3 The length of L in the middle), so as to quickly adapt to the size of the packaging bag, that is, the original integrated built-in support plate 1 is designed to be an assembled type, and the size can be adjusted by replacing the connecting column 103.

[0022] It also includes round steel guide rods 4. A pair of round steel guide rods 4 are installed at one end of the built-in support plate 1 close to the support wheel 3.

[0023] The round steel guide rod 4 includes a support rod section 402 connected to the built-in support plate 1, and a clamp-shaped front guide section 401 is correspondingly arranged on the support rod section 402. The front guide section 401 is contact-guided by a curved arc, and the distance between the two curved parts is slightly larger than the distance between the two sides of the bag opened into a rectangle by the support wheel 3 ( Figure 3 length of L in the middle).

[0024] When in use, the cylindrical bag is introduced into the support wheel 3 through the round steel guide rod 4 and then stretched into a rectangle, thereby reducing the friction force of the guide section on the bag. The built-in support wheel is used to replace the original sliding friction and convert it into rolling friction. The displacement wheel is no longer required to perform lateral rubbing, and it is not easy to produce longitudinal and lateral stretching deformation. The friction resistance between the packaging bag and the former is minimized, preventing deviation and jamming, and producing bags with a smooth and beautiful appearance that meet size requirements.

[0025] The present invention is described in detail above through specific and preferred embodiments, but those skilled in the art should understand that the present invention is not limited to the embodiments described above, and any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A built-in forming mechanism suitable for edge drawing of polymer laminated plastic woven bags, comprising a built-in support plate (1), characterized in that: The tail guide section (101) of the built-in support plate (1) is provided with four support wheels (3) capable of expanding the bag into a rectangular shape.

2. The built-in forming mechanism suitable for edge drawing of polymer laminated plastic woven bags according to claim 1, characterized in that: Two groups of mounting holes (2) are correspondingly formed on the upper and lower end surfaces of the tail guide section (101) of the built-in support plate (1), the mounting holes (2) are symmetrically arranged on the left and right, and the support wheel (3) is mounted in the mounting hole (2) via a support wheel rotating shaft (301).

3. The built-in forming mechanism suitable for edge drawing of polymer laminated plastic woven bags according to claim 1, characterized in that: It also includes round steel guide rods (4), and a pair of round steel guide rods (4) are installed on one end of the built-in support plate (1) close to the support wheel (3).

4. The built-in forming mechanism suitable for edge drawing of polymer laminated plastic woven bags according to claim 3, characterized in that: The round steel guide rod (4) comprises a support rod section (402) connected to the built-in support plate (1), and a clamp-shaped front guide section (401) is correspondingly arranged on the support rod section (402).

5. The built-in forming mechanism suitable for edge drawing of polymer laminated plastic woven bags according to claim 1, characterized in that: Two tail guide sections (101) are symmetrically arranged on the left and right, and the two tail guide sections (101) are connected via a connecting column (103).

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