A heating cylinder device, a curved tape and a curved zipper

Abstract

The application provides a cylinder device, a curved tape and a curved zipper. The cylinder device comprises a cylinder body, the outer surface of the cylinder body is circumferentially provided with a plurality of positioning grooves along the axial direction, each of the positioning grooves comprises a tapered slope and a rib groove arranged in sequence; the chord height value P of the tapered slope of the cylinder body under a specified chord length after unfolding is greater than or equal to a preset value, and the specific calculation formula of the chord height value P is as follows: wherein R represents the outer radius of the cylinder body; θ represents the included angle between the tapered slope and the axis of the cylinder body; and L represents the chord length of an arc scale for measuring the curved tape. The application has the advantages that the outer radius R of the cylinder body and the included angle θ between the tapered slope and the axis of the cylinder body are simultaneously considered as two influencing factors, and the prepared curved tape can truly achieve the desired effect.

Description

[Technical Field]

[0001] This invention relates to the field of zipper technology, and in particular to a drying cylinder device, a curved fabric tape, and a curved zipper. [Background Technology]

[0002] Zippers are widely used in clothing, bags, tents, and other products. In some applications, when a flat zipper is sewn onto a product, the zipper teeth may warp (e.g., arching, bulging, or wavy), severely affecting the product's appearance. To improve aesthetics, curved zippers were developed. When the two sides of the fabric strip are of unequal length, the longer side bends towards the shorter side, forming a curved strip. Zipper teeth are then installed along the inner curved edge of this strip, creating a curved zipper. When a curved zipper is sewn onto a product, the zipper teeth remain smooth, preventing arching, wavy, or other issues.

[0003] In the production of curved fabric tape, existing technologies use nylon filaments on one side of the tape to form an inner arc through the elastic shrinkage of the nylon filaments. Specifically, during the drying stage, a drying cylinder with a tapered inclined surface is used to dry and shape the tape, thereby forming a curved tape; for example, Chinese utility model patent application CN201420537809.3 discloses a zipper drying machine roller. However, in the zipper industry, existing technologies currently only consider the influence of angle (i.e., the angle between the inclined surface and the surface of the roller body) on the curvature of the tape. In reality, the curvature of the tape is not only affected by the angle, which makes it impossible for the resulting curved tape to truly achieve the desired effect. In view of the above-mentioned problems, the inventors of this case conducted in-depth research on this issue, resulting in this case. [Summary of the Invention]

[0004] The technical problem to be solved by the present invention is to provide a drying cylinder device, a curved fabric belt and a curved zipper, which solves the problem that the existing technology only considers the influence of angle on the curvature of the fabric belt, so that the curved fabric belt produced cannot truly achieve the desired effect.

[0005] This invention is implemented as follows:

[0006] In a first aspect, a drying cylinder device includes a drying cylinder body. The outer surface of the drying cylinder body is circumferentially provided with a plurality of positioning grooves along an axial direction. Each positioning groove includes a conical inclined surface and a ribbed groove arranged sequentially. When the conical inclined surface of the drying cylinder body is unfolded, the chord height P at a specified chord length is greater than or equal to a preset value. The specific calculation formula for the chord height P is as follows:

[0007]

[0008] Where R represents the outer radius of the drying cylinder body; θ represents the angle between the conical inclined surface and the axis of the drying cylinder body; L represents the chord length of the radii used to measure the curved fabric strip, and L is the specified chord length.

[0009] Furthermore, the preset value is set to 4.

[0010] Furthermore, the value of L is 300mm.

[0011] Furthermore, the depth of the ribbed groove is greater than or equal to half the thickness of the ribbed strip.

[0012] Furthermore, it also includes a heat source, which is located inside or outside the drying cylinder body.

[0013] Furthermore, during the drying and shaping process, the temperature of the drying cylinder body is higher than the glass transition temperature of the fabric material.

[0014] Furthermore, the heating method of the heat source includes, but is not limited to, steam, heating tubes, flames, or infrared rays.

[0015] Secondly, a curved fabric strip, wherein the curved fabric strip is dried and shaped using the aforementioned drying cylinder device; when the inner arc radius r of the curved fabric strip is greater than or equal to In this case, the chord height value H of the fabric tape is used to represent the degree of bending of the curved fabric tape, and the chord height value H of the fabric tape is proportional to the chord height value P under a specified chord length.

[0016] Furthermore, when the inner arc radius r of the curved fabric strip is less than In this case, the inner arc radius r represents the degree of bending of the curved fabric strip, and Where R represents the outer radius of the drying cylinder body; θ represents the angle between the conical inclined surface and the axis of the drying cylinder body.

[0017] Thirdly, a curved zipper, wherein the curved zipper uses the aforementioned curved fabric tape.

[0018] By adopting the technical solution of the present invention, at least the following beneficial effects are achieved: by designing the conical inclined surface of the drying cylinder body to have a chord height value P greater than or equal to a preset value at a specified chord length (i.e., the chord length of the radian ruler) after unfolding, since the calculation formula of the chord height value P simultaneously considers the two influencing factors of the outer radius R of the drying cylinder body and the angle θ between the conical inclined surface and the axis of the drying cylinder body, the resulting curved fabric belt can truly achieve the desired effect. [Attached Image Description]

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a structural diagram of a drying cylinder device according to the present invention;

[0021] Figure 2 yes Figure 1 Enlarged view of part A in the middle;

[0022] Figure 3 This is a schematic diagram of the structure of a curved fabric strip according to the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of a curved zipper according to the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] Drying cylinder device 100;

[0026] 200 radian ruler;

[0027] 300° curved fabric tape;

[0028] Curved zipper 400, zipper teeth 401;

[0029] Drying cylinder body 1;

[0030] Positioning groove 2, conical inclined surface 21, ribbed groove 22.

Detailed Implementation Methods

[0031] To better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing these embodiments and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0033] Example 1

[0034] Please see Figures 1 to 2As shown, a preferred embodiment of the drying cylinder device 100 of the present invention includes a drying cylinder body 1. A plurality of positioning grooves 2 are circumferentially arranged on the outer surface of the drying cylinder body 1 along the axial direction. In specific implementation, the positioning grooves 2 are evenly distributed on the outer surface of the drying cylinder body 1. Each positioning groove 2 includes a conical inclined surface 21 and a ribbed groove 22 arranged sequentially. In use, the drying cylinder device 100 winds the fabric strip to be dried and shaped around the positioning groove 2 of the drying cylinder body 1, specifically by contacting the conical inclined surface 21 with the ribbed side of the fabric strip placed in the ribbed groove 22. Then, a heat source is used to heat the drying cylinder body 1, thereby drying and shaping the fabric strip on the drying cylinder body 1. Due to the conical inclined surface 21, the length of the ribbed side of the fabric strip after drying is less than the length of the other side, thus obtaining a curved fabric strip with an inner arc. Meanwhile, since chain teeth need to be installed on the reinforcing ribs of the bent fabric strip during the zipper production process, if the reinforcing rib groove 22 is not set, one side will inevitably be raised while the other side will be flat, which is a problem of uneven ribs. This will cause the zipper to be under uneven stress, with insufficient strength, and it will be easily damaged during use. Therefore, by setting the reinforcing rib groove 22, the problem of uneven ribs can be effectively avoided, thereby ensuring the quality of the zipper.

[0035] After the conical inclined surface 21 of the drying cylinder body 1 is unfolded, the chord height value P at a specified chord length is greater than or equal to a preset value. The specific calculation formula for the chord height value P is as follows:

[0036]

[0037] Where R represents the outer radius of the drying cylinder body 1; θ represents the angle between the conical inclined surface 21 and the axis of the drying cylinder body 1; L represents the chord length of the arc ruler 200 used to measure the curved fabric strip, and L is the specified chord length.

[0038] In the zipper industry, existing drying cylinders have standardized dimensions and only consider the influence of angle (θ) on the curvature of the fabric tape. However, the inventors of this invention discovered in actual production that the curvature of the fabric tape is simultaneously affected by both the angle and the radius of the drying cylinder. Previous solutions that only considered the angle could not guarantee that the resulting curved fabric tape would truly achieve the desired effect. Therefore, this invention designs the conical inclined surface 21 of the drying cylinder body 1, after unfolding, to have a chord height P at a specified chord length (i.e., the chord length of the radian ruler) greater than or equal to a preset value. Because the calculation formula for the chord height P simultaneously considers both the outer radius R of the drying cylinder body 1 and the angle θ between the conical inclined surface 21 and the axis of the drying cylinder body 1, the resulting curved fabric tape can truly achieve the desired effect.

[0039] In some embodiments of the present invention, the preset value is set to 4. Since if the chord height value P at a specified chord length is greater than 4, the fabric strip dried and shaped by the drying cylinder body 1 will be approximately a straight fabric strip, which typically fails to meet the requirements of the zipper industry, the present invention sets the preset value to 4. Of course, the present invention is not limited to this; for example, when the drying cylinder device 100 is applied to the drying and shaping of fabric strips in other industries, the preset value can be set to other values ​​according to actual needs.

[0040] The value of L is 300mm. Since the zipper industry currently uses an arc ruler 200 with a chord length of 300mm to measure the curvature of the curved fabric tape, the present invention uses the value of L as 300mm. Of course, the present invention is not limited to this. In specific implementation, the specific value of L can be adjusted according to the actual specifications of the arc ruler 200.

[0041] In a specific implementation of this invention, after unfolding the conical inclined surface 21 of the drying cylinder body 1, the included angle θ between the conical inclined surface 21 and the axis of the drying cylinder body 1 is drawn, and the intersection point of the conical inclined surface 21 and the axis of the drying cylinder body 1 is the center O of the inner arc of the conical inclined surface 21 after unfolding; at the same time, the chord length of the arc ruler 200 (chord length L is 300mm) is drawn, and the perpendicular bisector of the chord length is drawn; such as Figure 1 As shown, the inner radius of the conical inclined surface 21 of the drying cylinder body 1 after unfolding is r, and the distance from the intersection of the perpendicular bisector and the chord length to the center O is D. The chord height P is calculated as follows:

[0042]

[0043] In some embodiments of the present invention, the depth of the reinforcing groove 22 is greater than or equal to half the thickness of the reinforcing strip. This way, after the reinforcing strip is placed in the reinforcing groove 22, there will be a certain space between the bottom surface of the reinforcing groove 22 and the bottom of the reinforcing strip. During drying and shaping, the fabric is subjected to force, while the reinforcing strip does not bear the tensile force and provides shrinkage space through the reinforcing groove 22, which can effectively prevent the reinforcing strip from becoming unbalanced.

[0044] In some embodiments of the present invention, the drying cylinder device 100 further includes a heat source (not shown), which is disposed inside or outside the drying cylinder body 1 to heat the drying cylinder body 1.

[0045] In some embodiments of the present invention, during drying and shaping, the temperature of the drying cylinder body is higher than the glass transition temperature of the fabric material to ensure that the fabric can be dried and shaped. Preferably, the temperature of the drying cylinder body is greater than 50°C.

[0046] In some embodiments of the present invention, the heating method of the heat source includes, but is not limited to, steam, heating tube, flame or infrared radiation, as long as it can heat the drying cylinder body 1 to the required temperature.

[0047] Example 2

[0048] Please see Figures 1 to 3 As shown, a preferred embodiment of the present invention is a curved fabric tape 300, which is obtained by drying and shaping using a drying cylinder device 100; wherein, the specific structure of the drying cylinder device 100 and the technical effects that can be obtained are the same as those in Embodiment 1, and please refer to the detailed description of Embodiment 1 for details, which will not be repeated here.

[0049] Assuming the curved fabric tape 300 forms a circle, the radius r of the circle represents the degree of curvature of the curved fabric tape 300. The smaller the value of r, the greater the degree of curvature of the curved fabric tape 300. However, in actual production, measuring the value of r is not convenient and is not conducive to routine inspection. If the chord height H of the fabric tape is used to represent the degree of curvature and made into an arc ruler 200, that is, the chord height H of the fabric tape with a chord length of 300mm represents the degree of curvature of the curved fabric tape 300, the larger the value of H, the greater the degree of curvature of the curved fabric tape 300. This can greatly facilitate routine inspection.

[0050] Therefore, in a specific implementation of the present invention, when the inner arc radius r of the curved fabric tape 300 is greater than or equal to... When the diameter is 150mm, the chord height H of the fabric tape represents the degree of bending of the curved fabric tape 300. The chord height H is proportional to the chord height P at a specified chord length. It should be noted that in this invention, the inner arc radius r of the curved fabric tape 300 is equal to the inner arc radius of the conical inclined surface 21 of the drying cylinder body 1 after unfolding. The following lists some actual test data for H, R, and θ to further illustrate the technical solution of this invention. Please refer to Table 1 below for details.

[0051] Table 1. Actual test data for H, R, and θ

[0052]

[0053]

[0054] As can be seen from Table 1 above, when the outer radius R of the drying cylinder body 1 is 250mm and the angle θ between the conical inclined surface 21 and the axis of the drying cylinder body 1 is 15°, the chord height H of the fabric tape is similar to that of the drying cylinder body 1 when the outer radius R is 50mm and the angle θ between the conical inclined surface 21 and the axis of the drying cylinder body 1 is 3°; that is, the resulting fabric tape curvature is similar. When the outer radius R of the drying cylinder body 1 is 250mm and the angle θ between the conical inclined surface 21 and the axis of the drying cylinder body 1 is 25°, the chord height H of the fabric tape is similar to that of the drying cylinder body 1 when the outer radius R is 50mm and the angle θ between the conical inclined surface 21 and the axis of the drying cylinder body 1 is 3°. When the outer radius R of the drying cylinder body 1 is 50mm and the angle θ between the conical inclined surface 21 and the axis of the drying cylinder body 1 is 5°, the chord height H of the fabric tape is similar, meaning the resulting fabric tape curvature is similar. When the outer radius R of the drying cylinder body 1 is 250mm and the angle θ between the conical inclined surface 21 and the axis of the drying cylinder body 1 is 43°, the chord height H of the fabric tape is similar to that when the outer radius R of the drying cylinder body 1 is 50mm and the angle θ between the conical inclined surface 21 and the axis of the drying cylinder body 1 is 8°, meaning the resulting fabric tape curvature is similar. The above data clearly demonstrates that both the outer radius R of the drying cylinder body 1 and the angle θ between the conical inclined surface 21 and the axis of the drying cylinder body 1 affect the fabric tape curvature, and not just the angle θ itself.

[0055] In some embodiments of the present invention, since the inner arc radius r of the curved fabric tape 300 cannot be measured using the arc ruler 200, the measurement is not possible when the inner arc radius r of the curved fabric tape 300 is less than 150 mm. When the diameter is 150mm, the inner radius r represents the degree of bending of the curved fabric strip. Where R represents the outer radius of the drying cylinder body 1; θ represents the angle between the conical inclined surface 21 and the axis of the drying cylinder body 1. The following table 2 lists some actual test data for r, R, and θ to further illustrate the technical solution of the present invention.

[0056] Table 2 shows the actual test data for r, R, and θ.

[0057] Serial Number r R θ Serial Number r R θ 1 149.45mm 100mm 42° 16 94.35mm 50mm 32° 2 146.63mm 100mm 43° 17 91.80mm 50mm 33° 3 143.96mm 100mm 44° 18 89.41mm 50mm 34° 4 146.19mm 50mm 19° 19 87.17mm 50mm 35° 5 139.52mm 50mm 21° 20 85.06mm 50mm 36° 6 133.47mm 50mm 23° 21 83.08mm 50mm 37° 7 127.97mm 50mm 25° 22 81.21mm 50mm 38° 8 122.93mm 50mm 27° 23 79.45mm 50mm 39° 9 118.31mm 50mm 29° 24 77.78mm 50mm 40° 10 114.06mm 50mm 31° 25 76.21mm 50mm 41° 11 110.13mm 50mm 33° 26 74.72mm 50mm 42° 12 106.50mm 50mm 35° 27 73.31mm 50mm 43° 13 103.13mm 50mm 37° 28 71.97mm 50mm 44° 14 100mm 50mm 39° 29 70.71mm 50mm 45° 15 97.08mm 50mm 41° 30 69.50mm 50mm 46°

[0058] As can be seen from Table 2 above, when the angle θ between the conical inclined surface 21 and the axis of the drying cylinder body 1 is the same, the curvature of the fabric strip will be different if the outer radius R of the drying cylinder body 1 is different. For example, when the angle θ between the conical inclined surface 21 and the axis of the drying cylinder body 1 is 42°, the curvature of the fabric strip produced by the outer radius R of the drying cylinder body 1 being 100 mm and the outer radius R of the drying cylinder body 1 being 50 mm is different. This fully demonstrates that the outer radius R of the drying cylinder body 1 and the angle θ between the conical inclined surface 21 and the axis of the drying cylinder body 1 will affect the curvature of the fabric strip, and not just the angle θ.

[0059] Example 3

[0060] Please see Figures 1 to 4 As shown, a preferred embodiment of the present invention is a curved zipper 400, which includes a curved fabric strip 300 and a zipper tooth 401. The zipper tooth 401 is installed on the inner arc edge of the curved fabric strip 300. The specific structure of the curved fabric strip 300 is the same as that in Embodiment 2. For details, please refer to the detailed description of Embodiment 2, which will not be repeated here.

[0061] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A drying cylinder device, comprising a drying cylinder body, wherein a plurality of positioning grooves are circumferentially arranged on the outer surface of the drying cylinder body along the axial direction, each positioning groove comprising a conical inclined surface and a ribbed groove arranged sequentially; characterized in that: After the conical inclined surface of the drying cylinder body is unfolded, the chord height value P at a specified chord length is greater than or equal to a preset value. The specific calculation formula for the chord height value P is as follows: Where R represents the outer radius of the drying cylinder body; θ represents the angle between the conical inclined surface and the axis of the drying cylinder body; L represents the chord length of the radii used to measure the curved fabric strip, and L is the specified chord length; the preset value is 4, and the value of L is 300mm.

2. The drying cylinder apparatus as described in claim 1, characterized in that: The depth of the reinforcing groove is greater than or equal to half the thickness of the reinforcing strip.

3. The drying cylinder apparatus as described in claim 1, characterized in that: It also includes a heat source, which is located inside or outside the drying cylinder body.

4. The drying cylinder apparatus as described in claim 3, characterized in that: During the drying and shaping process, the temperature of the drying cylinder body is higher than the glass transition temperature of the fabric material.

5. The drying cylinder apparatus as described in claim 3, characterized in that: The heating method of the heat source includes, but is not limited to, steam, heating tubes, flames, or infrared rays.

6. A curved fabric tape, characterized in that: The curved fabric strip is dried and shaped using the drying cylinder device as described in any one of claims 1-5; when the inner arc radius r of the curved fabric strip is greater than or equal to In this case, the chord height value H of the fabric tape is used to represent the degree of bending of the curved fabric tape, and the chord height value H of the fabric tape is proportional to the chord height value P under a specified chord length.

7. A curved fabric tape as described in claim 6, characterized in that: When the inner arc radius r of the curved fabric is less than In this case, the inner arc radius r represents the degree of bending of the curved fabric strip, and Where R represents the outer radius of the drying cylinder body; θ represents the angle between the conical inclined surface and the axis of the drying cylinder body.

8. A curved zipper, characterized in that: The curved zipper uses the curved fabric tape as described in any one of claims 6-7.

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