Ribbon sewing thread removal device

Abstract

This utility model relates to a webbing sewing thread removal device, comprising a frame on which a high-temperature resistant conveyor belt for laterally conveying a webbing sewing positioning template is mounted. A guide baffle for guiding the webbing sewing positioning template is laterally arranged above one end of the high-temperature resistant conveyor belt. An adjustable cantilever frame is mounted in the middle of the frame, and a hot air gun with its outlet facing downwards is mounted on the cantilever frame, located above the high-temperature resistant conveyor belt. This device has a compact structure, helps to remove thread ends after webbing sewing, and improves production efficiency.

Description

Technical Field

[0001] This utility model relates to a device for eliminating loose threads from webbing stitches. Background Technology

[0002] During the manufacturing process of the lanyard, one end of the webbing needs to be passed through the connecting slot on the fastener, folded over, and sewn to the webbing body to connect the fastener and the webbing together. After sewing, loose threads will remain. To improve the appearance of the lanyard, these threads need to be removed. The current conventional method is to trim these threads manually using U-shaped thread cutters. However, manual trimming over long periods can easily cause hand strain and is inefficient. Furthermore, to match the upstream and downstream production processes of the lanyard, multiple workers are usually needed for trimming, resulting in high labor costs. Utility Model Content

[0003] The purpose of this invention is to provide a device for eliminating thread ends after webbing is sewn. This device has a compact structure and helps to eliminate thread ends after webbing is sewn, thereby improving production efficiency.

[0004] The technical solution of this utility model is as follows: a webbing sewing thread removal device, including a frame, on which a high-temperature resistant conveyor belt for transversely conveying a webbing sewing positioning template is installed, and a guide baffle for guiding the webbing sewing positioning template is arranged transversely above one end of the high-temperature resistant conveyor belt, and an adjustable cantilever frame is installed in the middle of the frame, on which a hot air gun located above the high-temperature resistant conveyor belt and with its air outlet facing downward is installed.

[0005] Furthermore, several longitudinal support rollers that are rotatably connected to the frame are installed at transverse intervals on the frame. The support roller located at one end of the frame is driven to rotate by a geared motor, and the high-temperature resistant conveyor belt is wrapped around the multiple longitudinal support rollers.

[0006] Furthermore, the high-temperature resistant conveyor belt is a high-temperature resistant Teflon belt.

[0007] Furthermore, a pair of inverted L-shaped brackets are fixed on one side of the frame, and the guide baffle is vertically set and fixedly connected to one end of the brackets. The distance between the lower end of the guide baffle and the high-temperature resistant conveyor belt is 1~3mm.

[0008] Furthermore, the guide baffle is made of plastic.

[0009] Furthermore, the cantilever frame includes a vertical sleeve, a lifting tube is inserted inside the vertical sleeve, a first locking bolt for locking the lifting tube is screwed onto the side wall of the vertical sleeve, a longitudinal tube is fixed to the upper end of the lifting tube, a cantilever tube for installing a hot air gun is inserted through the longitudinal tube, and a second locking bolt for locking the cantilever tube is screwed onto the longitudinal tube.

[0010] Furthermore, a pair of hooks are installed at the cantilever end of the cantilever tube, and the hot air gun is mounted on the pair of hooks.

[0011] Furthermore, the sewing positioning template includes a base plate, on which multiple fastener placement grooves are arranged at horizontal intervals. One end of each fastener placement groove is connected to a webbing clearance groove. A seam line channel is provided on the base plate that runs horizontally through the upper part of the multiple webbing clearance grooves and penetrates the base plate.

[0012] Compared with the prior art, the present invention has the following advantages: 1. This device, using a high-temperature resistant conveyor belt and a hot air gun, helps to quickly remove loose threads left after webbing is sewn. Simultaneously, with a webbing sewing positioning template capable of holding multiple webbings at the same time, it allows for the sequential removal of threads from multiple webbings, effectively improving the efficiency of thread removal, reducing the number of workers, and lowering labor costs.

[0013] 2. The device has a compact structure, low manufacturing cost, and is easy to operate and use. Attached Figure Description

[0014] Figure 1 This is a top view of the structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a top view of the webbing sewing positioning template of this utility model; Figure 4 This is a partial enlarged view of the webbing sewing positioning template of this utility model; Figure 5 For the present utility model Figure 4 BB cross-sectional view; Figure 6 This is a schematic diagram showing the webbing and fasteners of this utility model placed on the webbing sewing positioning template; In the diagram: 10 - Frame; 11 - High-temperature resistant conveyor belt; 12 - Longitudinal support roller; 13 - Gear motor; 20 - Guide baffle; 21 - Bracket; 30 - Cantilever; 31 - Vertical sleeve; 32 - Lifting pipe; 33 - First locking bolt; 34 - Longitudinal pipe; 35 - Cantilever pipe; 36 - Second locking bolt; 37 - Hook; 40 - Hot air gun; 100 - Webbing sewing positioning template; 101 - Fastener placement groove; 102 - Webbing clearance groove; 103 - Sewing line groove; 104 - Adhesive layer. Detailed Implementation

[0015] To make the above-mentioned features and advantages of this utility model more easily understood, specific embodiments are described below in conjunction with the accompanying drawings, but this utility model is not limited thereto.

[0016] refer to Figures 1 to 6 A webbing sewing thread removal device includes a frame 10, on which a high-temperature resistant conveyor belt 11 for laterally conveying a webbing sewing positioning template 100 is mounted. A guide baffle 20 is laterally positioned above one end of the high-temperature resistant conveyor belt to guide the webbing sewing positioning template, facilitating both longitudinal positioning and lateral conveying. An adjustable cantilever 30 is mounted in the middle of the frame, on which a hot air gun 40 is mounted, positioned above the high-temperature resistant conveyor belt with its outlet facing downwards. The webbing sewing positioning template, containing multiple webbing pieces sewn with fasteners, is placed on the high-temperature resistant conveyor belt. The template is laterally conveyed by the high-temperature resistant conveyor belt, allowing the sewing threads on the webbing to pass under the hot air gun. The hot air output from the hot air gun causes the thread ends on the sewing threads to shrink, thereby eliminating the sewing thread ends on the webbing.

[0017] In this embodiment, a plurality of longitudinal support rollers 12, rotatably connected to the frame, are installed at transverse intervals on the frame. The support rollers located at one end of the frame are driven to rotate by a reduction motor 13. The high-temperature resistant conveyor belt is wound around the multiple longitudinal support rollers. The high-temperature resistant conveyor belt is driven to rotate by the reduction motor. The frame is also provided with a tensioning structure (not shown in the figure) for tensioning the high-temperature resistant conveyor belt; this tensioning structure is prior art and will not be described in detail.

[0018] In this embodiment, the high-temperature resistant conveyor belt is made of high-temperature resistant Teflon, which helps hot air to pass through and avoids high temperature accumulation on the high-temperature resistant conveyor belt, thus reducing its service life.

[0019] In this embodiment, a pair of spaced-apart, inverted L-shaped brackets 21 are fixed to one side of the frame by bolts and nuts. The guide baffle is vertically positioned and its upper part is fixedly connected to one end of the brackets, thereby suspending the guide baffle above the high-temperature resistant conveyor belt. To better achieve longitudinal positioning of the webbing sewing positioning template and guidance during transverse conveying, and to avoid contact between the guide baffle and the high-temperature resistant conveyor belt, the distance between the lower end of the guide baffle and the high-temperature resistant conveyor belt is 1~3mm.

[0020] In this embodiment, the guide baffle is made of acrylic plastic sheet, which is not only lighter than steel sheet, but also easier to obtain and lower in cost.

[0021] In this embodiment, in order to facilitate the adjustment of the height and longitudinal position of the hot air gun, the cantilever frame includes a vertical sleeve 31, a lifting tube 32 is inserted into the vertical sleeve, a first locking bolt 33 for locking the lifting tube is screwed to the side wall of the vertical sleeve, a longitudinal tube 34 is fixed to the upper end of the lifting tube, a cantilever tube 35 for installing the hot air gun is inserted into the longitudinal tube, and a second locking bolt 36 for locking the cantilever tube is screwed to the longitudinal tube.

[0022] In this embodiment, to facilitate the assembly and disassembly of the hot air gun, a pair of hooks 37 are installed at the cantilever end of the cantilever tube, and the hot air gun is hung on the pair of hooks. The distance between the lower end of the hot air gun and the high-temperature resistant conveyor belt is 10~15cm.

[0023] In this embodiment, the sewing positioning template includes a base plate. Multiple fastener placement grooves 101 are spaced laterally on the base plate. One end of each fastener placement groove is connected to a webbing clearance groove 102. One end of the webbing is passed through a fastener and bent to fit against the webbing body. The fastener is then placed into the fastener placement groove, and part of the webbing body is placed into the webbing clearance groove. A seam line channel 103 is provided on the base plate, extending laterally through the upper part of the multiple webbing clearance grooves and penetrating the base plate. The sewing machine needle passes through the seam line channel to sew the end of the webbing to the webbing body. During the webbing sewing operation, the base plate is equipped with a cover plate for pressing down the webbing. The cover plate has clearance grooves corresponding to the seam line channel to allow the sewing machine needle to pass through for sewing.

[0024] To better position the webbing, prevent it from shifting, and improve its flatness during sewing, adhesive layers 104 are respectively provided on the bottom surface of the webbing clearance groove and on the upper and lower sides of the seam groove. These adhesive layers adhere the webbing body and the bent end of the webbing after passing through the fastener. The adhesive layer can be self-adhesive or acrylic glue, etc.

[0025] When using this device, turn on the hot air gun (a 2kW industrial-grade STXH2000-A9 hot air gun can be used), adjust the temperature of the hot air gun (adjust the temperature according to the material of the sewing thread; for example, for polyester fiber thread, control the temperature of the hot air gun to about 205℃~230℃), start the geared motor, the speed of the geared motor is 1400r / min, and the travel speed of the high-temperature resistant conveyor belt is about 12m / min; place the sewing positioning template, which contains multiple pre-sewn webbing, on the high-temperature resistant conveyor belt (open the cover on the bottom plate; when the thread is thick, the thread between two adjacent webbings can be pre-cut with scissors), so that the sewing positioning template fits against the guide baffle; the high-temperature resistant conveyor belt transports the sewing positioning template laterally, so that the position of the webbing seam passes under the hot air gun, and the thread between two adjacent webbings will be melted and contracted by the hot air (if not cut), thus eliminating the thread ends on the webbing.

[0026] Since the threads sewn on the webbing are usually sewn 2 to 3 times, and because the hot air blows for a short time, some of them shrink after being blown by the hot air gun, which will not affect the sewing effect of the webbing; while the threads between two adjacent webbings are single threads, which are more likely to melt and shrink when blown by the hot air.

[0027] If the terms "first" and "second" are used in the above description to define the components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of distinguishing the components in the description. Unless otherwise stated, the above terms have no special meaning.

[0028] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws) or a non-detachable fixed connection (e.g., riveting or welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0029] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0030] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0031] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A device for eliminating thread ends in webbing stitches, comprising a frame, characterized in that, The frame is equipped with a high-temperature resistant conveyor belt for laterally conveying the webbing sewing positioning template. A guide baffle for guiding the webbing sewing positioning template is arranged laterally above one end of the high-temperature resistant conveyor belt. An adjustable cantilever is installed in the middle of the frame, and a hot air gun with its air outlet facing downward is installed on the cantilever.

2. The braid thread end eliminator device of claim 1, wherein, The frame is equipped with several longitudinal support rollers that are rotatably connected to the frame. The support rollers located at one end of the frame are driven to rotate by a geared motor. The high-temperature resistant conveyor belt is wrapped around the multiple longitudinal support rollers.

3. The braid thread end eliminator device according to claim 1 or 2, characterized in that, The high-temperature resistant conveyor belt is a high-temperature resistant Teflon belt.

4. The braid thread end eliminator device according to claim 1 or 2, wherein, A pair of inverted L-shaped brackets are fixed on one side of the frame. The guide baffle is vertically set and fixedly connected to one end of the brackets. The distance between the lower end of the guide baffle and the high-temperature resistant conveyor belt is 1~3mm.

5. The braid thread end eliminator device of claim 4, wherein, The guide baffle is made of plastic.

6. The braid thread end eliminator device of claim 1, wherein, The cantilever frame includes a vertical sleeve, a lifting tube is inserted inside the vertical sleeve, a first locking bolt for locking the lifting tube is screwed to the side wall of the vertical sleeve, a longitudinal tube is fixed to the upper end of the lifting tube, a cantilever tube for installing a hot air gun is inserted inside the longitudinal tube, and a second locking bolt for locking the cantilever tube is screwed to the longitudinal tube.

7. The braid thread end eliminator device of claim 6, wherein, A pair of hooks are installed at the cantilever end of the cantilever tube, and the hot air gun is installed on the pair of hooks.

8. The braid thread end eliminator device of claim 1, wherein, The sewing positioning template includes a base plate, on which multiple fastener placement grooves are arranged at horizontal intervals. One end of each fastener placement groove is connected to a webbing clearance groove. A seam line channel is provided on the base plate that runs horizontally through the upper part of the multiple webbing clearance grooves and penetrates the base plate.

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