Leveling device for non-woven bag making machine

Abstract

The utility model relates to the field of leveling devices, and discloses a leveling device for a non-woven fabric bag making machine, which comprises a bottom plate, a guide assembly, a primary leveling assembly and a secondary leveling assembly are sequentially arranged on the bottom plate, the guide assembly comprises two guide shafts and spring assemblies positioned on two sides of the two guide shafts, and the primary leveling assembly and the secondary leveling assembly are arranged on the bottom plate. When the non-woven fabric bag passes through the two guide shafts, the spring assembly can automatically adjust the extrusion force of the guide shafts to the non-woven fabric bag by utilizing the springback force of the spring according to the actual width and material characteristics of the non-woven fabric bag. The deviation phenomenon of the non-woven fabric bags in the conveying process is effectively avoided, the non-woven fabric bags are subjected to primary flexible leveling, a good foundation is laid for the subsequent leveling procedure, and the stability and the initial flatness of the non-woven fabric bags in the conveying process are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of leveling devices, specifically a leveling device for a nonwoven bag making machine. Background Technology

[0002] In the production process of nonwoven bags, the bag-making stage is crucial. From raw material rolls to finished products, nonwoven bags often suffer from wrinkles and unevenness before bag making due to the inherent characteristics of the roll material, uneven tension during unwinding, and various external forces encountered during transport. These uneven bags entering the bag-making process directly not only affect the bag-making precision and reduce production efficiency but may also lead to poor appearance quality in the finished bags, such as creases and asymmetry, severely impacting the product's market competitiveness.

[0003] Traditional nonwoven bag making machines have several shortcomings in the leveling process. Some simple leveling devices rely solely on a single roller compression method to level the nonwoven bags. This approach is ineffective for nonwoven bags of varying materials and thicknesses, and the leveling effect is unsatisfactory for thicker or stiffer nonwoven fabrics. Furthermore, the pressure of a single roller cannot be flexibly adjusted according to the actual condition of the nonwoven bag, easily leading to over-compression that damages the nonwoven fabric, or insufficient pressure that fails to achieve the desired leveling effect. In addition, traditional leveling devices lack effective buffering and adaptive mechanisms during the guiding of the nonwoven bags, making them prone to shifting during transport and further affecting the leveling quality. Therefore, we propose a leveling device for nonwoven bag making machines. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a leveling device for a nonwoven bag making machine, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a leveling device for a non-woven bag making machine, comprising a base plate, wherein a guide assembly, a primary leveling assembly and a secondary leveling assembly are sequentially arranged on the base plate, and the guide assembly comprises two guide shafts and spring assemblies located on both sides of the two guide shafts.

[0006] Preferably, a concave frame three is fixedly mounted on the base plate, spring assemblies are arranged on both sides of the concave frame three, and two guide shafts are rotatably arranged on the inner side of the concave frame three.

[0007] Preferably, the spring assembly includes two sets of side protrusions, a vertical shaft, an L-shaped slider, and a spring, which are respectively fixedly installed on both sides of the guide shaft. Each set of side protrusions has two protrusions. Rectangular grooves are provided on both sides of the concave frame. Two L-shaped sliders are mirror-slidably arranged inside the rectangular grooves. The ends of the two L-shaped sliders extending to the outside of the rectangular grooves are sleeved with the vertical shaft. The upper and lower ends of the vertical shaft are respectively fixedly connected to the two side protrusions. A spring is fixedly installed on one side of each of the two side protrusions. One end of the spring is in contact with the end of the L-shaped slider extending to the outside of the rectangular groove.

[0008] Preferably, the primary leveling assembly includes side panels fixedly installed on both sides of the base plate and a second pressing shaft located between the two side panels.

[0009] Preferably, a side panel groove is provided on the side of the side panel, a tension spring is fixedly installed on the bottom inner wall of the side panel groove, an L-shaped slider II is slidably installed inside the side panel groove, the bottom of the L-shaped slider II is fixedly connected to the tension spring, and one end of the L-shaped slider II extending to the outside of the side panel groove is rotatably connected to the pressing shaft II.

[0010] Preferably, the secondary leveling assembly includes a concave frame one, a cylinder, a concave frame two, and a pressing shaft one. The concave frame one is fixedly installed on the base plate, and a cylinder is fixedly installed on the top of the concave frame one. The output shaft of the cylinder passes through the concave frame one and extends to the inner side of the concave frame one. The concave frame two is fixedly installed on the output shaft of the cylinder, and the pressing shaft one is rotatably installed on the inner side of the concave frame two.

[0011] Compared with the prior art, this utility model provides a leveling device for a non-woven bag making machine, which has the following advantages:

[0012] From the perspective of the guiding components, its unique spring assembly design provides stable and adaptive guiding force for the conveying of nonwoven bags. As the nonwoven bag passes through the two guide shafts, the spring assembly automatically adjusts the compression force of the guide shafts on the bag based on its actual width and material characteristics, utilizing the spring's rebound force. This not only effectively prevents the nonwoven bag from shifting during conveying but also provides initial flexible leveling, laying a solid foundation for subsequent leveling processes and significantly improving the stability and initial flatness of the nonwoven bag during conveying.

[0013] In terms of the primary leveling component, the clever cooperation between the tension spring and the second L-shaped slider ensures that the second pressing shaft remains in close contact with the non-woven bag, and automatically adjusts the pressing pressure according to the thickness and material of the non-woven bag. Compared to the traditional fixed-pressure leveling method using a single roller, this adaptive pressure adjustment mechanism ensures that just the right pressure is applied to non-woven bags of different materials and thicknesses. Whether it is a thinner non-woven fabric or a thicker, stiffer one, it can be effectively leveled, significantly improving the effect and applicability of primary leveling and creating more ideal conditions for secondary leveling.

[0014] The cylinders in the secondary leveling assembly provide the device with greater flexibility and precision. Operators can precisely adjust the gap between the pressing shaft and the base plate by controlling the extension length of the cylinder output shaft, based on the actual condition of the nonwoven bag. This precise gap adjustment can adapt to the leveling needs of nonwoven bags of different thicknesses, achieving refined tertiary leveling of the nonwoven bags. Compared with traditional leveling devices, it can more effectively eliminate residual wrinkles and unevenness on the nonwoven bags, greatly improving the final flatness of the nonwoven bags, thereby enhancing the bag-making precision and the appearance quality of the finished bags, and strengthening the product's competitiveness in the market. Simultaneously, the multi-stage, adaptive leveling design of the entire leveling device reduces production interruptions and defect rates caused by uneven nonwoven bags, improving production efficiency and reducing production costs, demonstrating significant economic benefits and practical value. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A magnified view of part A in the diagram;

[0017] Figure 3 This is a top view of the present invention;

[0018] Figure 4 for Figure 3 BB cross-sectional diagram in the middle;

[0019] Figure 5 for Figure 4 A magnified view of part C in the diagram.

[0020] In the diagram: 1. Base plate; 2. Concave frame one; 3. Cylinder; 4. Concave frame two; 5. Pressing shaft one; 6. Side panel; 7. Concave frame three; 8. Side protrusion; 9. Rectangular groove; 10. L-shaped slider one; 11. Vertical shaft; 12. Spring; 13. Guide shaft; 14. Side plate groove; 15. Tension spring; 16. L-shaped slider two; 17. Pressing shaft two. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 A leveling device for a nonwoven bag making machine includes a base plate 1. A guide assembly, a primary leveling assembly, and a secondary leveling assembly are sequentially arranged on the base plate 1. The guide assembly includes two guide shafts 13 and spring assemblies located on both sides of the two guide shafts 13. The two guide shafts 13 are used to guide the nonwoven bag. The nonwoven bag is then leveled by the primary leveling assembly and the secondary leveling assembly to ensure the leveling effect.

[0023] Furthermore, a concave frame 7 is fixedly mounted on the base plate 1, spring assemblies are arranged on both sides of the concave frame 7, and two guide shafts 13 are rotatably arranged on the inner side of the concave frame 7.

[0024] Furthermore, the spring assembly includes two sets of side protrusions 8, a vertical shaft 11, L-shaped sliders 10, and springs 12, which are respectively fixedly installed on both sides of the guide shaft 13. Each set of side protrusions 8 has two pieces. Rectangular grooves 9 are provided on both sides of the concave frame 3 7. Two L-shaped sliders 10 are mirror-slidably arranged inside the rectangular grooves 9. The ends of the two L-shaped sliders 10 extending to the outside of the rectangular grooves 9 are sleeved with the vertical shaft 11. The upper and lower ends of the vertical shaft 11 are respectively fixedly connected to the two side protrusions 8. Springs 12 are fixedly installed on the corresponding side of the two side protrusions 8. One end of the spring 12 is in contact with the end of the L-shaped slider 10 extending to the outside of the rectangular groove 9. When the spring 12 rebounds normally, it will squeeze the two L-shaped sliders 10 on the same side toward each other, keeping the guide shaft 13 pressing the non-woven bag that is guided through the middle, and performing initial flattening and pressing on it.

[0025] Furthermore, the primary leveling component includes side panels 6 fixedly installed on both sides of the base plate 1 and a pressing shaft 17 located between the two side panels 6. The non-woven bag passes through the bottom of the pressing shaft 17 and is leveled once.

[0026] Furthermore, a side panel groove 14 is provided on the side of the side panel 6. A tension spring 15 is fixedly installed on the bottom inner wall of the side panel groove 14. An L-shaped slider 16 is slidably installed inside the side panel groove 14. The bottom of the L-shaped slider 16 is fixedly connected to the tension spring 15. One end of the L-shaped slider 16 extending to the outside of the side panel groove 14 is rotatably connected to the pressing shaft 17. When the tension spring 15 is pulled back normally, the L-shaped slider 16 is pulled towards the side closer to the bottom plate 1, keeping the pressing shaft 17 in close contact with the non-woven bag, and performing a second pressing and flattening of the non-woven bag.

[0027] Furthermore, the secondary leveling assembly includes a concave frame 2, a cylinder 3, a second concave frame 4, and a pressing shaft 5. The concave frame 2 is fixedly installed on the base plate 1. The cylinder 3 is fixedly installed on the top of the concave frame 2. The output shaft of the cylinder 3 extends through the concave frame 2 to the inside of the concave frame 2. The second concave frame 4 is fixedly installed on the output shaft of the cylinder 3. The pressing shaft 5 is rotatably installed on the inside of the second concave frame 4. After the nonwoven bag passes through the leveling assembly, it passes under the pressing shaft 5. The cylinder 3 adjusts the length of its output shaft extending downwards, adjusts the gap between the pressing shaft 5 and the base plate 1, and adjusts the clearance of the nonwoven bag to perform a third leveling.

[0028] Structural Description:

[0029] Base plate: As the basic component of the entire leveling device, it provides an installation support platform for other components. The guide component, primary leveling component, and secondary leveling component are all set on the base plate in sequence.

[0030] Bootstrapping component:

[0031] Guide shafts: Two shafts are provided to guide the nonwoven bag's path, ensuring it accurately enters the subsequent leveling assembly for processing. The rotating mechanism is located inside the concave frame three, allowing for flexible rotation to accommodate the movement of the nonwoven bag.

[0032] Spring assembly: Includes side protrusions, a vertical shaft, L-shaped sliders, and springs. Each set of side protrusions has two pieces, fixedly installed on both sides of the guide shaft. Rectangular slots are formed on both sides of the concave frame. Two L-shaped sliders are mirror-slidably mounted inside these slots. One end of each L-shaped slider extends outward from the rectangular slot and is fitted onto the vertical shaft. The upper and lower ends of the vertical shaft are fixedly connected to the two side protrusions, respectively. A spring is fixedly installed on one side corresponding to each of the two side protrusions, with one end of the spring fitting against the end of the L-shaped slider extending outward from the rectangular slot. When the springs rebound normally, they press the two L-shaped sliders on the same side towards each other, causing the guide shaft to press against the non-woven bag guided through the middle, achieving initial leveling and pressing.

[0033] Concave frame three: Fixedly mounted on the base plate, used to install two guide shafts and spring assemblies on both sides, providing a mounting frame and structural support for the guide assemblies.

[0034] One-time leveling components:

[0035] Side panels: Fixedly installed on both sides of the base plate, serving to support and fix the second pressing shaft, while also providing an overall structural frame for the primary leveling assembly.

[0036] Pressing shaft two: Located between the two side panels, the non-woven bag passes through the bottom of pressing shaft two to perform a leveling operation on the non-woven bag.

[0037] Side panel groove: A groove on the side of the side panel, used to install tension springs and L-shaped sliders.

[0038] Tension spring: It is fixedly installed on the bottom inner wall of the side plate groove. Its function is to pull the L-shaped slider towards the side closer to the bottom plate when it is pulled back normally.

[0039] L-shaped slider two: It is slidably installed inside the side plate groove, with its bottom fixedly connected to the tension spring, and one end extending to the outside of the side plate groove is rotatably connected to the pressing shaft two. When the tension spring is pulled back, the L-shaped slider two keeps the pressing shaft two in close contact with the non-woven bag, realizing a secondary pressing and flattening of the non-woven bag.

[0040] Secondary leveling components:

[0041] Concave frame 1: Fixedly installed on the base plate, it is the basic support structure of the secondary leveling assembly and is used to install cylinders and other components.

[0042] Cylinder: Fixedly installed on the top of the concave frame one, its output shaft extends through the concave frame one to the inside of the concave frame one. The function of the cylinder is to adjust the gap between the pressing shaft one and the base plate by adjusting the downward extension length of its output shaft, thereby adjusting the passage gap of the non-woven bag and achieving three-stage leveling.

[0043] Concave bracket 2: Fixedly installed on the output shaft of the cylinder, located inside the concave bracket 1, used to install the rotating pressing shaft 1.

[0044] Pressing Shaft 1: Rotatably installed inside the concave frame 2. After the non-woven bag passes through the leveling assembly once, it passes under the pressing shaft 1 and undergoes a third leveling process.

[0045] Working principle: When the spring 12 rebounds normally, it will press the two L-shaped sliders 10 on the same side closer to each other, keeping the guide shaft 13 pressing the non-woven bag that is guided through the middle, and performing initial leveling and pressing. When the tension spring 15 pulls back normally, it will pull the L-shaped slider 16 closer to the bottom plate 1, keeping the pressing shaft 17 in close contact with the non-woven bag, and performing a second pressing and leveling of the non-woven bag. After the non-woven bag passes through the leveling component once, it passes under the pressing shaft 5. The cylinder 3 adjusts the length of its output shaft extending downwards, adjusts the gap between the pressing shaft 5 and the bottom plate 1, adjusts the clearance of the non-woven bag, and performs a third leveling.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flattening device for a nonwoven fabric bag making machine, comprising a base plate (1), characterized in that, The bottom plate (1) is sequentially provided with a guide assembly, a primary leveling assembly and a secondary leveling assembly.

2. A flattening device for a nonwoven bag making machine according to claim 1, characterized in that: The bottom plate (1) is fixedly provided with a concave frame three (7), and the spring assembly is arranged on both sides of the concave frame three (7).

3. The flattening device for a nonwoven bag making machine according to claim 2, characterized in that: The spring assembly comprises two groups of side protrusions (8), a vertical shaft (11), an L-shaped sliding block one (10) and a spring (12) fixedly arranged on both sides of the guide shaft (13), each group of side protrusions (8) has two, both sides of the concave frame three (7) are provided with a rectangular groove (9), the inside of the rectangular groove (9) is slidably provided with two L-shaped sliding blocks one (10), one end of the two L-shaped sliding blocks one (10) extending to the outside of the rectangular groove (9) is sleeved with the vertical shaft (11), the upper and lower ends of the vertical shaft (11) are fixedly connected with the two side protrusions (8) respectively, one side of the two side protrusions (8) corresponding to each other is fixedly provided with the spring (12), one end of the spring (12) is attached to one end of the L-shaped sliding block one (10) extending to the outside of the rectangular groove (9).

4. The flattening device for use in a nonwoven bag making machine according to claim 1, wherein: The primary leveling assembly comprises side panels (6) fixedly arranged on both sides of the bottom plate (1) and a pressing shaft two (17) arranged between the two side panels (6).

5. A flattening device for a nonwoven bag making machine according to claim 4, characterized in that: The side panel (6) is provided with a side plate groove (14) on the side surface, a tension spring (15) is fixedly arranged on the bottom inner wall of the side plate groove (14), an L-shaped sliding block two (16) is slidably arranged in the side plate groove (14), the bottom of the L-shaped sliding block two (16) is fixedly connected with the tension spring (15), and one end of the L-shaped sliding block two (16) extending to the outside of the side plate groove (14) is rotatably connected with the pressing shaft two (17).

6. A flattening device for a nonwoven bag making machine according to claim 1, characterized in that: The secondary leveling assembly comprises a concave frame one (2), a cylinder (3), a concave frame two (4) and a pressing shaft one (5), the concave frame one (2) is fixedly arranged on the bottom plate (1), the cylinder (3) is fixedly arranged on the top of the concave frame one (2), the output shaft of the cylinder (3) extends to the inside of the concave frame one (2) through the concave frame one (2), the concave frame two (4) is fixedly arranged on the output shaft of the cylinder (3), and the pressing shaft one (5) is rotatably arranged on the inside of the concave frame two (4).

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