A fabric coating droplet removal device

Abstract

This utility model discloses a fabric coating droplet removal device; the removal device includes several triangular bars and a suction assembly acting on the inlet and outlet of the fabric; the several triangular bars are divided into an upper triangular bar group and a lower triangular bar group; the fabric passes between the upper triangular bar group and the lower triangular bar group, the upper triangular bar group and the lower triangular bar group are staggered, so that the fabric forms a continuous undulating wave shape in the vertical direction and contacts and rubs against the triangular bars; through the designed removal device, the molten droplets of the fabric are removed before the fabric coating by multiple triangular bars and the suction assembly, avoiding the molten droplets being scraped off the fabric surface when passing through the glue knife, entering the glue, and then jamming the knife edge, producing glue marks or missing glue coating.

Description

Technical Field

[0001] This utility model is a fabric coating droplet removal device, belonging to the field of airbags. Background Technology

[0002] Airbag fabric is mainly made of polyester or nylon. During the weaving process, there will be 8-15mm long rough edges on both sides. In order to make the roll-up smoother and reduce the frayed edges of the fabric, the rough edges are usually removed by heat melting.

[0003] When weaving fabric, hot-melt methods are used to remove the rough edges of the two fabric sides. There are usually residual melt droplets on the two fabric sides. Some melt droplets are weakly bonded to the fabric surface. When the fabric surface is coated with a doctor blade, the doctor blade scrapes some melt droplets off the fabric. The melt droplets will then enter the adhesive column of the coating. As the coating continues, the melt droplets will roll and disperse to various parts of the adhesive column. Some melt droplets will get stuck at the blade edge, causing adhesive marks or missed areas on the fabric surface, resulting in uneven coating thickness and causing the fabric to fail to meet the requirements of airbag material.

[0004] Therefore, the present invention aims to design a device for removing molten droplets from fabric coatings. Utility Model Content In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a fabric coating droplet removal device to solve the problem.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fabric coating droplet removal device, comprising several triangular rods and a suction assembly acting on the inlet and outlet of the fabric; the several triangular rods are divided into an upper triangular rod group and a lower triangular rod group; the fabric passes between the upper triangular rod group and the lower triangular rod group, the upper triangular rod group and the lower triangular rod group being staggered, so that the fabric forms a continuous undulating wave shape in the vertical direction and contacts and rubs against the triangular rods.

[0006] Preferably, the corners of the triangular bar that come into contact with the fabric are rounded.

[0007] Preferably, the triangular rod is an equilateral triangle.

[0008] Preferably, the spacing between adjacent triangular bars is greater than or equal to half the length of a single side of the triangular bar.

[0009] Preferably, the engagement depth between the upper triangular bar group and the lower triangular bar group should be greater than or equal to one-half the length of a single side of the triangular bar.

[0010] Preferably, the suction assembly includes suction hoods corresponding to both sides of the fabric and a driving member acting on the suction hoods; the driving member generates negative pressure in the suction hoods to suck away the molten droplets scraped off the fabric by the triangular bar.

[0011] Preferably, the suction components are respectively disposed at the inlet and outlet of the fabric.

[0012] Preferably, the removal device is tilted.

[0013] Beneficial effects This invention uses a designed removal device that removes molten droplets from the fabric before coating by employing multiple triangular rods and a suction assembly. This prevents the molten droplets from being scraped off the fabric surface and entering the adhesive when passing through the glue knife, thus avoiding jamming the knife edge and producing glue marks or missed coating. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a fabric coating droplet removal device according to the present invention; Figure 2 This is a schematic diagram of the triangular rod of this utility model. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] Please see Figure 1 , Figure 2 This utility model provides a technical solution for a device to remove molten droplets from a fabric A coating: it includes several triangular rods 1 and a suction assembly 2 acting on the inlet and outlet of the fabric A; the several triangular rods 1 are divided into an upper triangular rod group 11 and a lower triangular rod group 12; the fabric A passes between the upper triangular rod group 1 and the lower triangular rod group 12, and the upper triangular rod group 1 and the lower triangular rod group 12 are staggered, so that the fabric A forms a continuous undulating wave shape in the vertical direction and contacts and rubs against the triangular rods 1. Dividing the triangular rods 1 into upper and lower groups and staggering them is intended to force the fabric A to follow the arrangement of the triangular rods 1 to form a continuous undulating wave shape when passing through, through the positional difference between the upper and lower triangular rods 1. This structure can maximize the contact area between the fabric A and the triangular rods 1, and at the same time, compared with planar contact, it makes the fabric A more taut and generates greater friction with the triangular rods 1, so that the molten droplets can be scraped off.

[0017] Preferably, the corners of the triangular bar 1 that come into contact with fabric A are rounded. This rounded corner design changes the "point contact" to "arc-surface contact," preventing fabric A from easily snagging its fibers during friction, which could lead to damage or pilling. In one embodiment, the radius of the rounded corner at the edge where the triangular bar contacts the fabric is 0.4~2mm.

[0018] The triangular rod 1 is an equilateral triangle.

[0019] The spacing between adjacent triangular bars 1 should be greater than or equal to half the length of a single side of the triangular bar 1. This ensures that the adjacent triangular bars 1 have sufficient spacing to allow fabric A to pass through, preventing fabric A from being excessively compressed in a wavy pattern.

[0020] The engagement depth between the upper triangular bar group 1 and the lower triangular bar group 12 should be greater than or equal to half the length of a single side of the triangular bar 1. The engagement depth between the upper triangular bar group 1 and the lower triangular bar group 12 determines the degree of undulation of the wave pattern of fabric A. When the depth is insufficient, fabric A only bends slightly, and the friction effect is weak; while when the engagement depth is greater than or equal to half the length of a single side of the triangular bar 1, fabric A can form obvious undulations, allowing the triangular bar 1 to deeply contact the surface of fabric A and enhance the scraping effect.

[0021] The suction components are respectively located at the inlet and outlet of the fabric. The suction component 2 includes existing suction hoods 21 corresponding to both sides of the fabric A, and a driving element 22 acting on the suction hoods 21. The driving element 22 generates negative pressure within the suction hoods 21, sucking away the molten droplets scraped off the fabric A by the triangular rod 1. By promptly adsorbing the molten droplets scraped off by the triangular rod 1, the suction component 2 prevents the droplet particles from entering the adhesive columns of the coating. The driving element 22 is a suction motor. The removal device is tilted, allowing the molten droplet particles to fall naturally to a certain extent, making it easier for the suction component 2 to capture them.

[0022] It is worth mentioning that existing winding structures are provided at the front and back of fabric A to drive fabric A to move within the device.

[0023] Working principle: The fabric A to be processed is conveyed between the upper triangular bar group 1 and the lower triangular bar group 12. Because the two triangular bars 1 are staggered, the fabric A forms a continuous undulating wave shape. The wavy fabric A makes full contact and friction with the surface of the triangular bars 1. The contact corners of the triangular bars 1 are rounded to avoid snagging and damaging the fabric A. At the same time, the friction of the corners scrapes off the molten droplets on the surface of the fabric A. Simultaneously, the drive component 22 of the suction component 2 is activated. The drive component 22 generates negative pressure in the suction hoods 21 on both sides of the fabric A. The molten droplets scraped off by the triangular bars 1 are actively captured by the negative pressure suction hoods 21 on both sides and finally sucked away from the surface of the fabric A to avoid secondary adhesion of the molten droplets.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fabric coating droplet removal device, characterized in that: The removal device includes several triangular bars and a suction assembly acting on the inlet and outlet of the fabric; the several triangular bars are divided into an upper triangular bar group and a lower triangular bar group; the fabric passes between the upper triangular bar group and the lower triangular bar group, and the upper triangular bar group and the lower triangular bar group are staggered so that the fabric forms a continuous undulating wave shape in the vertical direction and comes into contact with and rubs against the triangular bars.

2. The fabric coating droplet removal device according to claim 1, characterized in that: The corners of the triangular bar that come into contact with the fabric are rounded.

3. The fabric coating droplet removal device according to claim 1, characterized in that: The triangular rod is an equilateral triangle.

4. The fabric coating droplet removal device according to claim 3, characterized in that: The spacing between adjacent triangular bars should be greater than or equal to half the length of a single side of the triangular bar.

5. The fabric coating droplet removal device according to claim 3, characterized in that: The engagement depth between the upper triangular bar group and the lower triangular bar group should be greater than or equal to one-half the length of a single side of the triangular bar.

6. The fabric coating droplet removal device according to claim 1, characterized in that: The suction assembly includes suction hoods corresponding to both sides of the fabric and a driving member acting on the suction hoods; the driving member generates negative pressure in the suction hoods to suck away the molten droplets scraped off the fabric by the triangular bar.

7. The fabric coating droplet removal device according to claim 1, characterized in that: The suction components are respectively installed at the inlet and outlet of the fabric.

8. The fabric coating droplet removal device according to claim 1, characterized in that: The removal device is set at an angle.

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