Cutting device for non-woven fabric production

Abstract

The embodiment of the utility model discloses a cutting device for non-woven fabric production, which comprises a cutting table, two oppositely arranged L-shaped supports are fixedly connected onto the cutting table, the bottoms of the L-shaped supports are connected with a knife rest capable of sliding up and down through tension springs, cams are rotatably mounted on the L-shaped supports, and servo motors for driving the cams are mounted on the L-shaped supports. The bottom of the cam abuts against the top of the tool rest. An upper cutter is fixedly installed on the cutter rest, a ceramic plate is embedded in the side face of the upper cutter, a groove is formed in the surface of the ceramic plate, an electric heating wire is installed in the groove, and a lower cutter aligned with the upper cutter is installed on the cutting table. According to the non-woven fabric, after the non-woven fabric is cut, soft flocks can be quickly melted immediately under thermal radiation of the electric heating wire; the mode is between cold cutting and hot cutting, so that soft flocks after cutting are greatly reduced, and the situation that the cutting edge of the non-woven fabric is hardened is avoided.

Description

A cutting device for nonwoven fabric production Technical Field

[0001] This utility model relates to the field of nonwoven fabric cutting technology, and in particular to a cutting device for nonwoven fabric production. Background Technology

[0002] Nonwoven fabric is a sheet, web, or mat made of fibers arranged in a directional or random pattern, bound together by friction, cohesion, or bonding, or a combination of these methods. Nonwoven fabric is characterized by its moisture-proof, breathable, flexible, lightweight, non-flammable, easily degradable, non-toxic, non-irritating, rich in colors, inexpensive, and recyclable properties.

[0003] There are generally two types of cutting for non-woven fabrics. One is to cut directly with electric scissors (cold cutting). This cutting method is prone to producing lint at the edges and cannot guarantee cleanliness after cutting. The other is hot cutting. Due to the high temperature, the cut edges of the non-woven fabric are harder after hot cutting, and there may even be problems such as local scorching and carbonization.

[0004] Therefore, we propose a cutting device for nonwoven fabric production. Summary of the Invention

[0005] In view of this, the present invention provides a cutting device for nonwoven fabric production, which solves the problems of lint or hard edges in the cutting of nonwoven fabric in the prior art.

[0006] A cutting device for nonwoven fabric production includes a cutting table. Two L-shaped supports are fixedly connected to the cutting table and arranged opposite each other. The bottom of the L-shaped supports is connected to a blade holder that can slide up and down through a tension spring. A cam is rotatably mounted on the L-shaped support, and a servo motor for driving the cam is mounted on the L-shaped support. The bottom of the cam abuts against the top of the blade holder. When the cam rotates, the blade holder can perform up and down cutting motion under the combined action of the tension spring and the cam.

[0007] An upper cutting scissor is fixedly installed on the blade holder. A ceramic plate is embedded in the side of the upper cutting scissor. A groove is opened on the surface of the ceramic plate, and an electric heating wire is installed in the groove. A lower cutting scissor aligned with the upper cutting scissor is installed on the cutting table. When the upper cutting scissor reaches its lowest position under the pressure of the cam, the groove can be aligned with the edge of the cut non-woven fabric.

[0008] Preferably, the cam is divided into three uniform parts by angle, namely a first smooth section, a second smooth section, and an arc section. When the arc surface of the arc section contacts the tool holder, the tool holder is in its lowest working position.

[0009] Preferably, the top of the L-shaped bracket is rotatably mounted with a camshaft via a bearing, and the cam is fixedly mounted on the camshaft.

[0010] Preferably, the L-shaped bracket is provided with a sliding hole, and a sliding column is fixedly connected to the top of the tool holder, the sliding column being slidably inserted into the sliding hole.

[0011] Preferably, the aforementioned tension spring is sleeved on the slide column, with the upper end of the tension spring fixedly connected to the bottom of the L-shaped bracket and the lower end of the tension spring fixedly connected to the top surface of the tool holder.

[0012] Preferably, the electric heating wire is a constant power electric heating wire, and the power cord of the electric heating wire passes through the ceramic plate and the upper cutting scissors and is led out from the side of the upper cutting scissors.

[0013] Implementing the embodiments of this utility model will have the following beneficial effects:

[0014] The aforementioned cutting device for nonwoven fabric production was adopted;

[0015] After being cut, the nonwoven fabric can quickly melt away the lint under the heat radiation of the electric heating wire. This method is between cold cutting and hot cutting, which greatly reduces the lint after cutting and does not cause the cut edges of the nonwoven fabric to harden. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] in:

[0018] Figure 1 is a schematic diagram of the structure of a cutting device for nonwoven fabric production in one embodiment;

[0019] Figure 2 is a schematic diagram of the upper and lower cutting scissors in one embodiment;

[0020] Figure 3 is a schematic diagram of the structure of the L-shaped bracket, cam, and tool holder in one embodiment;

[0021] Figure 4 is a schematic diagram of the structure of the cam side in one embodiment.

[0022] Reference numerals: 100, cutting table; 200, L-shaped bracket; 201, sliding hole; 202, bearing; 300, lower cutting shears; 400, upper cutting shears; 401, ceramic plate; 402, groove; 403, electric heating wire; 500, blade holder; 501, sliding column; 502, tension spring; 600, servo motor; 700, cam; 701, camshaft; 702, first smooth section; 703, second smooth section; 704, arc section. Detailed Implementation

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0026] Example 1

[0027] Please refer to Figures 1-4. A cutting device for nonwoven fabric production includes a cutting table 100. Two L-shaped supports 200 are fixedly connected to the cutting table 100. The bottom of the L-shaped supports 200 is connected to a blade holder 500 that can slide up and down via a tension spring 502. A cam 700 is rotatably mounted on the L-shaped supports 200, and a servo motor 600 for driving the cam 700 is mounted on the L-shaped supports 200. The bottom of the cam 700 abuts against the top of the blade holder 500. When the cam 700 rotates, the blade holder 500 can perform up and down cutting motion under the combined action of the tension spring 502 and the cam 700.

[0028] As shown in Figures 1 and 2, an upper cutting shear 400 is fixedly installed on the blade holder 500. A ceramic plate 401 is embedded in the side of the upper cutting shear 400. A groove 402 is opened on the surface of the ceramic plate 401. An electric heating wire 403 is installed in the groove 402. A lower cutting shear 300 aligned with the upper cutting shear 400 is installed on the cutting table 100. When the upper cutting shear 400 reaches the lowest position under the pressure of the cam 700, the groove 402 can be aligned with the edge of the cut non-woven fabric.

[0029] Among them, the ceramic plate 401 is made of high-temperature resistant and heat-insulating ceramic (such as silicon carbide ceramic, boron nitride ceramic or alumina ceramic), and the opening of the groove 402 is strip-shaped. When meeting the requirements, its opening should be smaller and flatter to ensure sufficient heat.

[0030] Furthermore, a camshaft 701 is rotatably mounted on the top of the L-shaped bracket 200 via a bearing 202, and a cam 700 is fixedly fitted onto the camshaft 701. A sliding hole 201 is provided on the L-shaped bracket 200, and a sliding column 501 is fixedly connected to the top of the tool holder 500, slidingly inserted into the sliding hole 201. A tension spring 502 is fitted onto the sliding column 501, with its upper end fixedly connected to the bottom of the L-shaped bracket 200 and its lower end fixedly connected to the top surface of the tool holder 500. During operation, the side of the cam 700 can press against the tool holder 500, causing it to move downwards. During the rotation of the cam 700, the tension spring 502, under its elastic force, can also pull the tool holder 500 upwards.

[0031] The heating wire 403 is a constant power heating wire, and its power cord passes through the ceramic plate 401 and the upper cutting shear 400, exiting from the side of the upper cutting shear 400. In practice, the heating wire 403 is made of nickel-chromium wire, which has high thermal radiation efficiency and can quickly form a high-temperature zone at the opening of the groove 402, causing the nonwoven fabric fibers to melt.

[0032] It should be noted that, depending on the material and thickness of the nonwoven fabric and the dwell time of the cam 700 at its lowest position, the heating temperature of the electric heating wire (referring to the temperature at the opening of the groove 402) varies between 120℃ and 900℃. Furthermore, the heat source (electric heating wire 403) in this application does not come into contact with the nonwoven fabric; they are only close enough to facilitate heat transfer, similar to baking.

[0033] Example 2

[0034] Unlike Embodiment 1, in this embodiment, the cam 700 is divided into three uniform parts by angle. The three parts are a first smooth segment 702, a second smooth segment 703 and an arc segment 704. When the arc surface of the arc segment 704 abuts against the tool holder 500, the tool holder 500 is in its lowest working position.

[0035] As shown in Figure 4, when the cam 700 rotates clockwise (from the perspective shown in the figure), point A first contacts the top of the blade holder 500. Then, in the second smooth section 703, the blade holder 500 gradually descends. When the blade holder 500 contacts point B, it is at its lowest position. Throughout the entire arc section 704, the position of the blade holder 500 remains unchanged. When point C reaches the blade holder, it gradually ascends on the first smooth section 702. During this process, the blade holder 500 is at its lowest position for approximately one-third of the entire process, which is a relatively long time. This time is also the time during which the edge of the non-woven fabric is heated at the opening of the groove 402. This design extends the lint removal time, resulting in better lint removal.

[0036] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A cutting device for nonwoven fabric production, characterized in that, include: A cutting table (100) is provided, on which two opposing L-shaped supports (200) are fixedly connected. The bottom of each L-shaped support (200) is connected to a sliding blade holder (500) via a tension spring (502). A cam (700) is rotatably mounted on each L-shaped support (200), and a servo motor (600) is mounted on the L-shaped support (200) to drive the cam (700). The bottom of the cam (700) abuts against the top of the blade holder (500). When the cam (700) rotates, under the combined action of the tension spring (502) and the cam (700), The blade holder (500) is capable of up-and-down cutting motion; an upper cutting blade (400) is fixedly installed on the blade holder (500), and a ceramic plate (401) is embedded in the side of the upper cutting blade (400). A groove (402) is opened on the surface of the ceramic plate (401), and an electric heating wire (403) is installed in the groove (402). A lower cutting blade (300) aligned with the upper cutting blade (400) is installed on the cutting table (100); when the upper cutting blade (400) reaches the lowest position under the pressure of the cam (700), the groove (402) can be aligned with the edge of the cut non-woven fabric.

2. The cutting device for nonwoven fabric production according to claim 1, characterized in that: Divided by angle, the cam (700) comprises three uniform parts, namely a first smooth segment (702), a second smooth segment (703), and an arc segment (704). When the arc surface of the arc segment (704) abuts against the tool holder (500), the tool holder (500) is in its lowest working position.

3. The cutting device for nonwoven fabric production according to claim 1, characterized in that: The top of the L-shaped bracket (200) is rotatably mounted with a camshaft (701) via a bearing (202), and the cam (700) is fixedly mounted on the camshaft (701).

4. The cutting device for nonwoven fabric production according to claim 1, characterized in that: The L-shaped bracket (200) has a sliding hole (201), and the top of the knife holder (500) is fixedly connected to a sliding column (501), which is slidably inserted into the sliding hole (201).

5. A cutting device for nonwoven fabric production according to claim 4, characterized in that: The tension spring (502) is sleeved on the slide column (501), and the upper end of the tension spring (502) is fixedly connected to the bottom of the L-shaped bracket (200), and the lower end of the tension spring (502) is fixedly connected to the top surface of the tool holder (500).

6. The cutting device for nonwoven fabric production according to claim 1, characterized in that: The electric heating wire (403) is a constant power electric heating wire, and the power line of the electric heating wire (403) passes through the ceramic plate (401) and the upper cutting shears (400) and is led out from the side of the upper cutting shears (400).

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