Easily-torn opening cutting mechanism

Abstract

The utility model discloses an easy-to-tear opening cutting mechanism, and relates to the technical field of packaging bag production equipment, in particular to a cutting mechanism for processing an easy-to-tear opening of a packaging bag. The cutter is provided with a pointed cutter head with a triangular pointed end or a round pointed end; a triangular groove or a circular groove is formed in the base plate; a drawstring structure is arranged on one side of the base plate in the advancing direction of the packaging bag, the packaging bag is stretched straightly, and cutting is convenient. The number of the sharp tool bits is the same as that of the grooves. The distances between every two adjacent pointed tool bits and the grooves are the same. And the width of the sharp tool bit is the same as that of the groove. And the depth of the groove is greater than the length of the sharp tool bit. Two stop blocks are arranged on the base plate; two ends of the groove are respectively arranged; the distance is slightly larger than the width of the cutter. According to the technical scheme, the problems that in the prior art, an easy-to-tear opening is difficult to tear, a base plate and a cutter are easy to abrade, and production clamping stagnation is caused by replacement of accessories are solved.

Description

Technical Field

[0001] The utility model relates to a cutting mechanism for an easy-tear edge of a packaging bag, and relates to the technical field of packaging bag production equipment, in particular to a cutting mechanism for processing an easy-tear edge of a packaging bag. Background Art

[0002] In current production technology, the easy-tear cutting mechanism used in strip bag packaging machines successfully achieves the precise formation of the easy-tear edge of the strip bag by cleverly combining the collaborative work of the easy-tear cutter and the pad. The design of this mechanism is intended to improve the convenience of packaging and user experience, allowing consumers to easily tear open the packaging bag and obtain the product inside during use. However, during the production process, since the existing cutter has a flat blade head and a flat pad, it is easy to cause incomplete cutting during the cutting process, resulting in the following problems: 1. The easy-tear edge is difficult to tear open (reasons: ① The easy-tear edge is shallow ② The strip bag naturally hangs down during cutting, and the strip bag will shift left and right during the cutting process. If the longitudinal seal overlaps, it cannot be torn open). 2. The pad is easily worn and consumed. 3. The easy-tear cutter is easily worn and consumed. 4. The equipment is easily stuck and stopped due to the wear of accessories. The above problems affect the continuity of production and the efficiency of the entire production cycle, reduce customer experience, and increase the cost of equipment use.

[0003] In view of the problems existing in the above-mentioned prior art, it is very necessary to research and design a new type of easy-tear cutting mechanism to overcome the problems existing in the prior art. Summary of the Invention

[0004] To address the technical issues raised in the prior art, such as difficulty in tearing the easy-tear notch, easy wear of the backing plate and cutter, and production delays caused by component replacement, a new easy-tear notch cutting mechanism is provided. This utility model primarily utilizes a pointed blade in conjunction with a grooved backing plate to cut the packaging bag, while also featuring a drawstring mechanism to straighten the bag, achieving perfect cutting while also extending the service life of the cutter and backing plate.

[0005] The technical means adopted by this utility model are as follows:

[0006] An easy-tear cutting mechanism comprises: a backing plate, and a cutter provided on the upper portion of the backing plate; the cutter is provided with a flat blade head; the contact surface between the backing plate and the cutter is a flat surface; when a packaging bag is placed on the backing plate and passes through, the flat blade head cooperates with the backing plate to cut an easy-tear edge into the packaging bag;

[0007] Furthermore, a pointed blade is provided on the cutter;

[0008] Furthermore, a groove is provided on the pad;

[0009] Furthermore, a drawstring mechanism is provided on one side of the pad in the forward direction of the packaging bag to straighten the packaging bag for easy cutting.

[0010] Furthermore, the pointed blade head is one of a triangular pointed head and a circular pointed head.

[0011] Furthermore, the groove is one of a triangular groove and a circular groove.

[0012] Furthermore, the number of the pointed cutting bits is the same as the number of the grooves.

[0013] Furthermore, the distance between two adjacent pointed blade heads is the same as the distance between two adjacent grooves.

[0014] Furthermore, the width of the pointed blade is the same as the groove width of the groove.

[0015] Furthermore, the depth of the groove is greater than the length of the pointed blade.

[0016] Furthermore, two stoppers are provided on the pad;

[0017] Furthermore, two stoppers are respectively provided at both ends of the groove;

[0018] Furthermore, the distance between the two stops is slightly larger than the width of the cutter;

[0019] Furthermore, the packaging bag passes between the two stoppers and is then cut by the cutter.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] 1. The easy-tear cutting mechanism provided by the utility model changes the flat blade head into a pointed blade head, making cutting easier;

[0022] 2. The easy-tear cutting mechanism provided by the utility model has a pointed blade design that increases the number of cutting points, making tearing easier;

[0023] 3. The easy-tear cutting mechanism provided by the utility model adds blocks at both ends of the pad groove to prevent the packaging bag from deviating and improve the cutting accuracy;

[0024] 4. The easy-tear cutting mechanism provided by the utility model is equipped with a pulling mechanism in the direction of the packaging bag's forward movement, which straightens the packaging bag and facilitates cutting;

[0025] 5. The easy-tear cutting mechanism provided by the utility model has a groove added at half point, which reduces the wear on the blade and also avoids the damage of the pad, avoids the downtime caused by replacing the cutter and pad, increases the service life of the equipment, improves production efficiency and reduces maintenance costs.

[0026] In summary, the technical solution of the present invention solves the problems in the prior art such as the easy-tear edge being difficult to tear open, the pad and the cutter being easily worn, and the production being stuck due to the replacement of accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 This is a schematic diagram of the structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the structure of a cutter and a backing plate with a triangular pointed tip in the utility model;

[0030] Figure 3 This is a schematic diagram of the structure of a cutter and a pad with a circular pointed tip in the utility model;

[0031] Figure 4 The utility model relates to a cutting knife structure of an existing flat-edged cutter head.

[0032] In the figure: 1, cutter 11, pointed cutter head 2, backing plate 21, groove 3, packaging bag 4, and drawstring mechanism. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] It is to be understood that the terms so far as the language goes are used herein only to describe specific embodiments and not intended to limit the example embodiments according to the present application. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components, and / or combinations thereof.

[0036] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. At the same time, it should be clear that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship for the convenience of description. The techniques, methods and devices known to those skilled in the related art can not be discussed in detail, but in appropriate cases, the techniques, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application: the orientation words "inner, outer" refer to the inner and outer of the contour of each component.

[0038] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0039] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0040] like Figure 1-3 As shown, the utility model provides an easy-tear cutting mechanism, wherein a pointed blade 11 is provided on the cutter 1; a groove 21 is provided on the pad 2; a drawstring mechanism 4 is provided on one side of the pad 2 in the forward direction of the packaging bag 3 to stretch the packaging bag 3 straight for easy cutting.

[0041] The pointed blade head 11 is a triangular pointed head or a circular pointed head.

[0042] The groove 21 is one of a triangular groove and a circular groove.

[0043] The number of the pointed blades 11 is the same as the number of the grooves 21 .

[0044] The distance between two adjacent pointed blade heads 11 is the same as the distance between two adjacent grooves 21 .

[0045] The width of the pointed blade 11 is the same as the groove width of the groove 21 .

[0046] The depth of the groove 21 is greater than the length of the pointed blade 11 .

[0047] Two blocks 22 are provided on the backing plate 2; the two blocks 22 are respectively provided at both ends of the groove 21; the distance between the two blocks 22 is slightly larger than the width of the cutter 1; the packaging bag 3 passes between the two blocks 22 and is then cut by the cutter 1.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An easy-tear cutting mechanism, comprising: A backing plate (2), and a cutter (1) arranged on the upper portion of the backing plate (2); The cutter (1) is provided with a flat-edged cutter head; The contact surface between the backing plate (2) and the cutter (1) is a plane; the packaging bag (3) is placed on the backing plate (2) and passes through, and the flat-edged cutter head cooperates with the backing plate (2) to cut an easy-to-tear edge into the packaging bag (3); the characteristics are: The cutter (1) is provided with a pointed cutter head (11); The backing plate (2) is provided with a groove (21); A drawing mechanism (4) is provided on one side of the pad (2) in the forward direction of the packaging bag (3) to straighten the packaging bag (3) for easy cutting.

2. The easy-tear cutting mechanism according to claim 1, characterized in that: The pointed blade head (11) is a triangular pointed head or a circular pointed head.

3. The easy-tear cutting mechanism according to claim 1, characterized in that: The groove (21) is one of a triangular groove and a circular groove.

4. The easy-tear cutting mechanism according to claim 1, characterized in that: The number of the pointed blade heads (11) is the same as the number of the grooves (21).

5. The easy-tear cutting mechanism according to claim 1, characterized in that: The distance between two adjacent pointed blade heads (11) is the same as the distance between two adjacent grooves (21).

6. The easy-tear cutting mechanism according to claim 1, characterized in that: The width of the pointed blade (11) is the same as the groove width of the groove (21).

7. The easy-tear cutting mechanism according to claim 1, characterized in that: The depth of the groove (21) is greater than the length of the pointed blade (11).

8. The easy-tear cutting mechanism according to claim 1, characterized in that: Two stoppers (22) are provided on the backing plate (2); The two stoppers (22) are respectively arranged at both ends of the groove (21); The distance between the two stoppers (22) is slightly larger than the width of the cutter (1); The packaging bag (3) passes between the two stoppers (22) and is then cut by the cutter (1).

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