Easy-tear line processing device for flexible packaging bags

Abstract

This utility model discloses a tear-off line processing device for flexible packaging bags. The device processes tear-off lines using a blade cutting method, reducing costs and increasing yield while ensuring processing quality. The tear-off line processing device for flexible packaging bags includes at least one material shaft, a fixed base, a mounting base, a spring, a bearing pressure roller, and a cutter. The material shaft supports the material to be processed. The fixed base is fixed relative to one of the material shafts. The mounting base is pivotally connected to the fixed base. The spring is disposed between the mounting base and the fixed base, driving the mounting base to swing towards the material shaft. The bearing pressure roller is mounted on the side of the mounting base, with an adjustable distance between it and the circumference of the material shaft, used to press the material tightly against the circumference of the material shaft. The cutter is mounted inside the mounting base, with an adjustable distance between it and the circumference of the material shaft, used to cut grooves on the surface of the material at a preset depth.

Description

Technical Field

[0001] This utility model belongs to the field of packaging processing technology, and specifically refers to an easy-tear line processing device for flexible packaging bags. Background Technology

[0002] In the production process of packaging containers (such as boxes and bags), easy-tear lines are usually set at the opening of the container to facilitate consumers' opening and use, so that consumers can easily open the opening.

[0003] For flexible packaging bags, the existing technology typically uses laser cutting to process the tear lines. However, laser cutting generates heat that can damage the ink printed on the bag surface, affecting its appearance. Furthermore, laser cutting equipment is expensive and consumes a lot of energy. It also produces smoke, requiring additional smoke extraction equipment, resulting in very high overall production costs. Utility Model Content

[0004] The main purpose of this utility model is to provide an easy-tear line processing device for flexible packaging bags, which solves the problems existing in the prior art. The easy-tear line is processed by cutting with a blade, which reduces costs and increases yield while ensuring processing quality.

[0005] To achieve the above objectives, the solution of this utility model is: A tear-off line processing device for flexible packaging bags includes at least one material shaft, a fixed base, a mounting base, a spring, a bearing pressure roller, and a cutter. The material shaft supports the material to be processed. The fixed base is fixed relative to one of the material shafts. The mounting base is pivotally connected to the fixed base. The spring is disposed between the mounting base and the fixed base and drives the mounting base to swing towards the material shaft. The bearing pressure roller is mounted on the side of the mounting base, and its distance from the circumference of the material shaft is adjustable, for pressing the material tightly against the circumference of the material shaft. The cutter is mounted inside the mounting base, and its distance from the circumference of the material shaft is adjustable, for cutting cut marks on the surface of the material at a preset depth.

[0006] The fixing base includes an upper body and a lower body forming a circular hole, and a locking bolt threaded through the upper body; one end of the upper body and the lower body are pivotally connected, and the other end of the two are detachably connected; the locking bolt passes through the circular hole to achieve locking; one end of the upper surface of the mounting base is pivotally connected to the lower end of the lower body in the same direction, and the spring is disposed between the other ends of the two.

[0007] The easy-tear line processing device for flexible packaging bags further includes a spring adjusting bolt and a wing nut. A limiting plate is provided inside the fixed base. The spring adjusting bolt passes through the wing nut, the limiting plate, and the spring in sequence before entering the mounting base. The spring adjusting bolt is threadedly connected to the wing nut and the mounting base. The two ends of the spring abut against the surfaces of the limiting plate and the mounting base, respectively.

[0008] The tear-off line processing device for flexible packaging bags further includes a horizontal adjusting bolt; the horizontal adjusting bolt is threaded through the pivot joint between the mounting base and the fixed base.

[0009] The easy-tear line processing device for flexible packaging bags further includes a mounting column, a fixing rod, and a pressure roller adjusting bolt; the bearing pressure roller is rotatably fitted on the end side of the mounting column near the circumferential surface of the material shaft; the fixing rod is mounted on the mounting base; the pressure roller adjusting bolt is movably inserted through the end of the fixing rod and threadedly connected to the end of the mounting column away from the circumferential surface of the material shaft.

[0010] Preferably, the side of the mounting base is provided with a clamping block for clamping the mounting column, and a clamping bolt is provided on the clamping block. The clamping bolt passes through one side of the clamping block and is threaded to the other side of the clamping block.

[0011] A fixing block is mounted on the mounting base, and a cutter adjusting bolt is threadedly connected to the fixing block; a pair of sliders are clamped on both sides of the cutter, and the sliders are slidably engaged within the mounting base; the end of the cutter adjusting bolt abuts against the end face of the slider to restrict the slider from retracting.

[0012] Preferably, an indicator disc is fixed to the surface of the fixing block, and markings are respectively provided on the end face of the cutter adjusting bolt and the surface of the indicator disc.

[0013] Alternatively, the cutter is a circular blade; a fixing block is mounted on the mounting base, and a cutter adjusting bolt is threadedly fitted onto the fixing block; a pair of sliders are clamped on both sides of the cutter, and the ends of the cutter and the sliders are rotatably engaged; the sliders are slidably engaged within the mounting base; the end of the cutter adjusting bolt abuts against the end face of the slider to restrict the slider from retracting; the circular blade has continuous circumferential cutting edges or several serrated cutting edges.

[0014] The circumferential surface of the material shaft is chrome-plated.

[0015] After adopting the above technical solution, the present invention has the following technical effects: This invention utilizes the adjusted bearing pressure roller and the spring force of the cutter to create a certain depth of cut marks on the material surface. This allows for continuous cutting of tear lines as the entire roll of material is conveyed forward by the material shaft, enabling continuous production and improving efficiency. The blade-based cutting method allows for the cutting of tear lines of different sizes depending on the blade thickness, while avoiding damage to the ink already printed on the material surface. This is particularly suitable for cutting the surface of flexible packaging bags, improving processing quality. Furthermore, the spring force and the distance between the bearing pressure roller / cutter and the material shaft circumference can be flexibly adjusted according to actual production needs, broadening the application scenarios and adapting to different products. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model.

[0017] Figure 2 This is a perspective view of the first embodiment of the present utility model.

[0018] Figure 3 This is a partial exploded view of the first embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the structure of the second embodiment of the present utility model.

[0020] Figure 5 This is a perspective view of the second embodiment of the present utility model.

[0021] Figure 6 This is a schematic diagram of two types of blades in the second embodiment of this utility model.

[0022] Explanation of icon numbers: 1-Material shaft; 2-Fixed seat; 21-Upper seat body; 22-Lower seat body; 23-Locking bolt; 3-Mounting seat; 4-Spring; 5-Bearing pressure roller; 6-Spring adjusting bolt; 7-Wing nut; 8-Limiting plate; 9-Horizontal adjusting bolt; 10-Mounting column; 20-Fixing rod; 30-Pressure roller adjusting bolt; 40-Clamping block; 50-Clamping bolt; 60-Fixing block; 70-Cutter adjusting bolt; 80-Slider; 90-Indicator disc; 100-Cutter; 1001-Circumferential blade; 1002-Serrated blade; a-Material. Detailed Implementation

[0023] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0024] refer to Figures 1 to 5As shown, this utility model discloses an easy-tear line processing device for flexible packaging bags, including at least one material shaft 1, a fixed seat 2, a mounting seat 3, a spring 4, a bearing pressure roller 5, and a cutter 100; The material shaft 1 is used to support the material a to be processed and guide the forward direction of the material a; The fixed base 2 is fixed relative to its material shaft 1, for example, it can be installed on the equipment bracket, so as to keep its relative position with its material shaft 1 fixed. Mounting base 3 and fixed base 2 are pivotally connected; Spring 4 is disposed between mounting base 3 and fixed base 2, and is used to drive mounting base 3 to swing toward material shaft 1; The bearing pressure roller 5 is installed on the side of the mounting base 3, and the distance between it and the circumference of the material shaft 1 is adjustable. It is used to press the material a tightly against the circumference of the material shaft 1. The cutter 100 is installed inside the mounting base 3, and its distance from the circumference of the material shaft 1 is adjustable. It is used to cut a groove on the surface of material a to a preset depth. After the material a is cut, it becomes thinner and can serve as an easy-tear line for material a. Here, material a is composed of multilayer film material composite with a total thickness of less than 200μm. The cutting depth of the cutter 100 is 20~60μm, that is, the gap between the cutting edge of the cutter 100 and the material shaft 1 is 20~60μm.

[0025] Through the above-described scheme, this utility model can use the adjusted bearing pressure roller 5 and the spring force of the cutter 100 to make the cutter 100 cut a certain depth of knife marks on the surface of material a. This allows for continuous cutting of the tear line as the entire roll of material a is conveyed forward by the material shaft 1, achieving continuous production and improving production efficiency. By using the blade cutting method, different sizes of tear lines can be cut according to the blade thickness, while avoiding damage to the ink already printed on the surface of material a. This is especially suitable for cutting the surface of flexible packaging bags, thereby improving processing quality. At the same time, the spring force of the spring 4 and the distance between the bearing pressure roller 5 / cutter 100 and the circumference of the material shaft 1 can be flexibly adjusted according to actual production needs, making the application scenarios of this utility model more extensive and adaptable to different products.

[0026] See Figures 1 to 3 The first embodiment of the present invention is shown.

[0027] The aforementioned fixing seat 2 includes an upper seat body 21 and a lower seat body 22 forming a circular hole, and a locking bolt 23 threadedly passing through the upper seat body 21; one end of the upper seat body 21 and the lower seat body 22 are pivotally connected, and the other end of the two are detachably connected, for example, by bolt locking, snap-fit ​​connection, etc.; the locking bolt 23 passes through the circular hole to achieve locking, for example, after opening the upper seat body 21 and the lower seat body 22 of the fixing seat 2, it is fitted onto the mounting shaft / mounting rod of the equipment bracket, and then the other end of the two is fixed, and then the locking bolt 23 is turned to abut against the mounting shaft / mounting rod to achieve the installation and fixation of the fixing seat 2; one end of the upper surface of the mounting seat 3 is pivotally connected to the lower end of the lower surface of the lower seat body 22 in the same direction, and the spring 4 is disposed between the other ends of the two.

[0028] This utility model also includes a spring adjusting bolt 6 and a wing nut 7. A limiting plate 8 is provided inside the fixing base 2 (i.e., inside the lower base 22). The spring adjusting bolt 6 passes through the wing nut 7, the limiting plate 8, and the spring 4 in sequence before entering the mounting base 3, and the spring adjusting bolt 6 is threadedly connected to the wing nut 7 and the mounting base 3. The two ends of the spring 4 abut against the surfaces of the limiting plate 8 and the mounting base 3, respectively. Thus, when it is necessary to adjust the elasticity of the spring 4, the wing nut 7 can be turned to compress or release the spring 4.

[0029] This utility model also includes a horizontal adjustment bolt 9; the horizontal adjustment bolt 9 is threaded through the pivot joint between the mounting base 3 and the fixed base 2, which can serve as the pivot of the mounting base 3, and can also realize the horizontal movement of the mounting base 3 when the operator turns the horizontal adjustment bolt 9, thereby realizing the left and right displacement of the cutter 100, and adjusting the cutting position of the cutter 100 without moving the material a.

[0030] This utility model also includes a mounting column 10, a fixing rod 20, and a pressure roller adjusting bolt 30; the bearing pressure roller 5 is rotatably fitted on the end side of the mounting column 10 near the circumference of the material shaft 1; the fixing rod 20 is mounted on the mounting base 3; the pressure roller adjusting bolt 30 is movably inserted through the end of the fixing rod 20 and threadedly connected to the end of the mounting column 10 away from the circumference of the material shaft 1. Thus, the distance between the bearing pressure roller 5 and the circumference of the material shaft 1 can be adjusted by turning the pressure roller adjusting bolt 30. In this embodiment, bearing pressure rollers 5 are provided on both sides of the cutter 100, which ensures a more balanced force on both sides of the cutter 100 to guarantee structural stability.

[0031] Furthermore, the side of the mounting base 3 is provided with a clamping block 40 for clamping the mounting column 10. A clamping bolt 50 is provided on the clamping block 40. The clamping bolt 50 is provided on one side of the clamping block 40 and threadedly connected to the other side thereto, so as to realize the clamping or loosening of the clamping block 40.

[0032] In the first embodiment, the cutter 100 is a rectangular blade; a fixing block 60 is mounted on the mounting base 32, and a cutter adjusting bolt 70 is threadedly connected to the fixing block 60; a pair of sliders 80 are clamped on both sides of the cutter 100, and the sliders 80 are slidably engaged within the mounting base 32; the end of the cutter adjusting bolt 70 abuts against the end face of the slider 70 to limit the backward movement of the slider 80. Thus, by turning the cutter adjusting bolt 70, the stroke of the slider 80 can be adjusted, thereby adjusting the distance between the blade of the cutter 100 and the circumference of the material shaft 1. In the first embodiment, the cutter 100 is a long strip blade.

[0033] Furthermore, an indicator dial 90 is fixed to the surface of the aforementioned fixing block 60. The end face of the cutter adjusting bolt 70 and the surface of the indicator dial 90 are respectively provided with numerical markings and directional markings to indicate the proportional coefficient and direction of turning the cutter adjusting bolt 70. In this embodiment, each rotation of the cutter adjusting bolt 70 causes the cutter to move forward or backward by 0.20 mm, corresponding to a small division of 2 μm.

[0034] The circumferential surface of the aforementioned material shaft 1 is chrome-plated to improve wear resistance and service life. The chrome plating increases the surface hardness of the material shaft 1, reducing frictional wear between the material a and components such as the cutter 100 and bearing roller 5 during material transport, ensuring long-term stability and precision, while also guaranteeing consistent cutting depth. Furthermore, the chrome plating enhances the corrosion resistance of the material shaft 1, preventing surface rust caused by environmental factors and further extending the equipment's service life. Therefore, the chrome plating of the material shaft 1 not only improves its physical properties but also ensures the smooth transport of material a during cutting, laying a solid foundation for subsequent cutting operations.

[0035] See Figure 4 , 5 The second embodiment of this utility model is shown.

[0036] The difference between the second embodiment and the first embodiment is that the cutter 100 is a circular blade that rotates with the slider 80, which can achieve rolling pressure cutting.

[0037] In addition, see Figure 6 The aforementioned circular blades can be of two types: one is a circular blade with continuous circumferential cutting edges (the cutting edges are connected in a circle of 360°), which cuts straight lines; the other is a circular blade with several serrated cutting edges, with gaps between adjacent cutting edges, thus cutting lines that are dotted lines.

[0038] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A device for processing easy-tear lines on flexible packaging bags, characterized in that: It includes at least one material shaft, a fixed base, a mounting base, a spring, a bearing pressure roller, and a cutter; The feed shaft is used to support the material to be processed; The fixed base is fixed relative to one of its material shafts; The mounting base is pivotally connected to the fixing base; The spring is disposed between the mounting base and the fixed base, and is used to drive the mounting base to swing in the direction of the material shaft; The bearing pressure roller is mounted on the side of the mounting base, and the distance between it and the circumference of the material shaft is adjustable, used to press the material tightly against the circumference of the material shaft; The cutter is installed in the mounting base, and the distance between it and the circumference of the material shaft is adjustable, so as to cut knife marks on the surface of the material at a preset depth.

2. The tear-line processing device for flexible packaging bags as described in claim 1, characterized in that: The fixing base includes an upper body and a lower body forming a circular hole, and a locking bolt threaded through the upper body; one end of the upper body and the lower body are pivotally connected, and the other end of the two are detachably connected; the locking bolt passes through the circular hole to achieve locking; one end of the upper surface of the mounting base is pivotally connected to the lower end of the lower body in the same direction, and the spring is disposed between the other ends of the two.

3. The easy-tear line processing device for flexible packaging bags as described in claim 1, characterized in that: It also includes a spring adjusting bolt and a wing nut, and a limit plate is provided inside the fixed base; the spring adjusting bolt passes through the wing nut, the limit plate, and the spring in sequence and then enters the mounting base, and the spring adjusting bolt is threadedly connected to the wing nut and the mounting base; the two ends of the spring abut against the surfaces of the limit plate and the mounting base, respectively.

4. The tear-off line processing device for flexible packaging bags as described in claim 1, characterized in that: It also includes a leveling bolt; the leveling bolt is threaded through the pivot joint between the mounting base and the fixed base.

5. The easy-tear line processing device for flexible packaging bags as described in claim 1, characterized in that: It also includes a mounting post, a fixing rod, and a pressure roller adjusting bolt; the bearing pressure roller is rotatably fitted on the end side of the mounting post near the circumference of the material shaft; the fixing rod is mounted on the mounting base; the pressure roller adjusting bolt is movably inserted through the end of the fixing rod and threadedly connected to the end of the mounting post away from the circumference of the material shaft.

6. The tear-line processing device for flexible packaging bags as described in claim 5, characterized in that: The mounting base has a clamping block on its side for clamping the mounting column. A clamping bolt passes through the clamping block and is threaded to one side of the clamping block and connected to the other side.

7. The tear-line processing device for flexible packaging bags as described in claim 1, characterized in that: The cutter is a rectangular blade; a fixing block is mounted on the mounting base, and a cutter adjusting bolt is threadedly connected to the fixing block; a pair of sliders are clamped on both sides of the cutter, and the sliders are slidably engaged within the mounting base; the end of the cutter adjusting bolt abuts against the end face of the slider to restrict the slider from retracting.

8. The tear-line processing device for flexible packaging bags as described in claim 7, characterized in that: An indicator disc is fixed to the surface of the fixing block, and markings are respectively provided on the end face of the cutter adjusting bolt and the surface of the indicator disc.

9. The tear-off line processing device for flexible packaging bags as described in claim 1, characterized in that: The cutter is a circular blade; a fixing block is mounted on the mounting base, and a cutter adjusting bolt is threadedly connected to the fixing block; a pair of sliders are clamped on both sides of the cutter, and the ends of the cutter and the sliders are rotatably engaged; the sliders are slidably engaged within the mounting base; the end of the cutter adjusting bolt abuts against the end face of the slider to limit the slider's backward movement; the circular blade has continuous circumferential cutting edges or several serrated cutting edges.

10. The tear-line processing device for flexible packaging bags as described in claim 1, characterized in that: The circumferential surface of the material shaft is chrome-plated.

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