Zipper pitch detection device

Abstract

The utility model discloses a zip fastener tooth distance detection device, including chain passing branch board and counting wheel, the counting wheel is provided with chain tooth guide slot, is provided with the number tooth gear in chain tooth guide slot, the number tooth gear and counting wheel synchronous rotation, the counting wheel is connected on the pivot of encoder, the encoder is set up on the counting wheel board, the counting wheel board is provided with counting wheel board pivot, the counting wheel board rotates along counting wheel board pivot, the counting wheel board is provided with cylinder, cylinder drive counting wheel board rotates along counting wheel board pivot, make counting wheel chain passing branch board clamping zip fastener, the left side of chain passing branch board is provided with zip fastener traction mechanism, and the zip fastener traction mechanism is used for pulling zip fastener. The utility model realizes to the chain tooth counting through number tooth gear and encoder, then according to zip fastener length calculation chain tooth average spacing again, and then realizes the automatic detection of zip fastener tooth distance, improves the detection efficiency of zip fastener tooth distance.

Description

Technical Field

[0001] This utility model belongs to the technical field of zipper manufacturing equipment, specifically relating to a zipper tooth spacing detection device. Background Technology

[0002] A zipper is a common opening and closing device, consisting of two fabric strips with teeth arranged on them, as well as a slider, top and bottom stops, and other components. By moving the slider, the teeth engage or disengage, thus opening and closing the zipper. Zippers are widely used in clothing, bags, footwear, and other products.

[0003] The tooth pitch refers to the distance between the center points of adjacent teeth. The size of the tooth pitch directly affects the zipper's performance. For example, a smaller tooth pitch usually means denser teeth, making the zipper more flexible and suitable for applications requiring bending, such as clothing. A larger tooth pitch, on the other hand, may indicate higher strength, suitable for applications requiring heavier loads, such as luggage. Tooth pitch also affects the zipper's smoothness; uneven tooth pitch can cause the zipper pull to move poorly or even get stuck. Furthermore, inconsistent tooth pitch can affect the meshing effect, leading to the zipper easily opening or not closing properly.

[0004] Inspecting the tooth spacing is crucial for ensuring the quality and performance of zippers, guaranteeing smooth operation, durability, and compliance with product standards. Therefore, the tooth spacing of zippers must be rigorously inspected during production to ensure each zipper meets design specifications. However, dedicated inspection devices for zipper tooth spacing are lacking in the market. Utility Model Content

[0005] The purpose of this invention is to provide a zipper tooth spacing detection device that can automatically detect zipper tooth spacing.

[0006] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows:

[0007] A zipper tooth spacing detection device includes a zipper guide plate and a counting wheel. The counting wheel is provided with a tooth guide groove, and a multi-toothed gear is provided in the tooth guide groove. The multi-toothed gear and the counting wheel rotate synchronously. The counting wheel is connected to the rotating shaft of an encoder. The encoder is mounted on the counting wheel plate. The counting wheel plate is provided with a counting wheel plate rotating shaft. The counting wheel plate rotates along the counting wheel plate rotating shaft. The counting wheel plate is provided with a pushing mechanism. The pushing mechanism drives the counting wheel plate to rotate along the counting wheel plate rotating shaft, so that the counting wheel moves closer to / away from the zipper guide plate, thereby realizing the clamping of the zipper by the counting wheel and the zipper guide plate. A zipper traction mechanism is provided on the left side of the zipper guide plate. The zipper traction mechanism is used to traction the zipper.

[0008] The zipper is located on the chain guide plate. The pushing mechanism drives the counting wheel to approach the chain guide plate, pressing the zipper against it. The counting gear engages with the gap between adjacent zipper teeth. The zipper traction mechanism pulls the zipper forward, and the zipper teeth move within the zipper tooth guide grooves. The zipper teeth drive the counting gear, and the counting wheel drives the encoder shaft to rotate. Each time a zipper tooth passes through, the encoder generates a pulse signal, thus counting the zipper teeth.

[0009] The control system calculates the average tooth spacing based on the zipper length and the number of teeth, thereby determining whether the zipper tooth spacing meets product requirements. The zipper traction mechanism is an automatic traction mechanism that can measure the zipper length; it not only guides the zipper forward but also measures its length. Of course, the zipper length can also be detected using an external detection device.

[0010] Specifically, the counting wheel includes a first roller and a second roller, and the counting gear is disposed between the first roller and the second roller.

[0011] To guide the zipper, a zipper cover plate is provided on the zipper support plate. The zipper travels between the zipper cover plate and the zipper support plate. The zipper cover plate is provided with a tooth travel groove.

[0012] Furthermore, the chain cover plate includes a front chain cover plate and a rear chain cover plate, and the counting wheel is located between the front chain cover plate and the rear chain cover plate.

[0013] To better guide the zipper's movement, a belt clip is provided upstream of the zipper support plate.

[0014] Specifically, the belt clip includes an upper clip and a lower clip. The lower clip is provided with a clip zipper travel groove. The upper clip is provided with a spring rod hole. A spring rod is provided in the spring rod hole. The spring rod is provided on the lower clip. A spring is fitted on the spring rod. The spring causes the upper clip and the lower clip to clamp the zipper at the clip zipper travel groove.

[0015] Furthermore, at the zipper travel groove of the clip, the upper clip is provided with a tooth pressing block, which presses against the tooth.

[0016] Furthermore, a spring limiting block is provided on the spring rod, and the spring is supported between the spring limiting block and the upper clamping plate.

[0017] Furthermore, the lower clamping piece is provided with a guide rod, and the upper clamping piece is provided with a guide rod hole, with the guide rod located inside the guide rod hole.

[0018] The zipper traction mechanism includes a pulley and a pressure belt. The pressure belt presses the zipper against the pulley, which is mounted on a servo motor. The servo motor drives the pulley to rotate, thus traction of the zipper. The servo motor itself has the function of emitting pulses, so it emits a corresponding number of pulses for each rotation angle, thereby acquiring the rotation data of the pulley. The pulley and the pressure belt clamp the zipper; as the pulley rotates, the zipper moves, allowing the length of the tractor zipper to be obtained.

[0019] This invention uses a gear and encoder to count zipper teeth, and then calculates the average spacing between the zipper teeth based on the zipper length, thereby achieving automatic detection of zipper tooth spacing and improving the detection efficiency of zipper tooth spacing. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the zipper tooth spacing detection device.

[0022] Figure 2 This is a schematic diagram of a multi-tooth mechanism.

[0023] Figure 3 This is a schematic diagram of the counting wheel structure.

[0024] Figure 4 This is a schematic diagram of the overband clamp structure.

[0025] Figure 5 This is a schematic diagram of the zipper traction mechanism. Detailed Implementation

[0026] like Figure 1-5 As shown, the zipper tooth spacing detection device includes a base 1, a tooth support plate 21 on the base 1, a zipper guide plate 22 on the tooth support plate 21, and a zipper cover plate on the zipper guide plate 22. The zipper travels between the zipper cover plate and the zipper guide plate 22. Specifically, the zipper cover plate includes a front zipper cover plate 221 and a rear zipper cover plate 222. Between the zipper cover plate and the zipper guide plate 22, both the front zipper cover plate 221 and the rear zipper cover plate 222 are provided with tooth travel grooves.

[0027] Between the front chain cover plate 221 and the rear chain cover plate 222, above the chain support plate 22, a counting wheel 23 is provided. The counting wheel 23 includes a first roller 231 and a second roller 232. A counting gear 234 is provided between the first roller 231 and the second roller 232. The counting gear 234 is located in the chain tooth guide groove 233 of the counting wheel 23 and rotates synchronously with the counting wheel 23.

[0028] The counting wheel 23 is connected to the rotating shaft of the encoder 25, which is mounted on the counting wheel plate 24. The counting wheel plate 24 is connected to the toothed support plate 21 via the counting wheel plate rotating shaft 241. The counting wheel plate 24 rotates on the toothed support plate 21 along the counting wheel plate rotating shaft 241. The counting wheel plate 24 is rotatably connected to a pushing mechanism, which is a cylinder (or other mechanism capable of pushing the counting wheel plate 24 to rotate on the toothed support plate 21 along the counting wheel plate rotating shaft 241). The piston rod of the cylinder 26 is rotatably connected to the counting wheel plate 24. The cylinder 26 is connected to the cylinder bracket 261 via the cylinder rotating shaft 262. The cylinder bracket 261 is connected to the toothed support plate 21. The cylinder 26 drives the counting wheel plate 24 to rotate along the counting wheel plate rotating shaft 241, causing the counting wheel 23 to move closer to / away from the chain support plate 22, thereby causing the counting wheel 23 and the chain support plate 22 to clamp the zipper.

[0029] To guide the zipper forward, a zipper traction mechanism 4 is provided downstream of the zipper support plate 22. The zipper traction mechanism 4 includes a pull belt support plate 41, on which a servo motor 42 is mounted. A pull belt wheel 43 is connected to the shaft of the servo motor 42. The pull belt wheel 43 and the servo motor 42 are located on opposite sides of the pull belt support plate 41. The pull belt support plate 41 has a through hole for the servo motor 42 to pass through. A pressure belt 44 is provided on one side of the pull belt wheel 43. The pressure belt 44 is mounted on a first pull belt guide wheel 451, a second pull belt guide wheel 452, and a third pull belt guide wheel 453. The first pull belt guide wheel 451, the second pull belt guide wheel 452, and the third pull belt guide wheel 453 are arranged in a triangular distribution on the pull belt support plate 41. The pressure belt 44 presses the zipper onto the pull belt wheel 43.

[0030] To better guide the zipper through the zipper support plate 22, a zipper clip 3 is provided upstream of the zipper support plate 22. The zipper clip 3 includes an upper clip 32 and a lower clip 31. The lower clip 31 is provided with a clip zipper travel groove 36. At the clip zipper travel groove 36, the upper clip 32 is provided with a tooth pressing block 37. The upper clip 32 is provided with a spring rod hole, and a spring rod is provided in the spring rod hole. The spring rod is provided on the lower clip 31, and a spring limiting block 33 is provided on the spring rod. A spring 34 is fitted on the spring rod. The spring 34 is supported between the spring limiting block 33 and the upper clip 32. The spring 34 causes the tooth pressing block 37 to press on the zipper tooth.

[0031] To further guide and limit the upper clamping piece, the lower clamping piece 31 is provided with a guide rod 35, and the upper clamping piece 32 is provided with a guide rod hole, with the guide rod 35 located inside the guide rod hole.

[0032] The zipper is located on the chain guide plate. A cylinder drives a counting wheel to approach the chain guide plate, pressing the zipper against it. A counting gear engages with the gap between adjacent zipper teeth. The zipper traction mechanism pulls the zipper forward, and the zipper teeth move within the tooth guide grooves. The zipper teeth drive the counting gear, which in turn drives the encoder shaft to rotate. Each time a zipper tooth passes through, the encoder generates a pulse signal, thus counting the zipper teeth.

[0033] The control system obtains the zipper length from the servo motor and the number of zipper teeth from the encoder. Based on the number of zipper teeth and the zipper length, it calculates the average tooth spacing to determine if the zipper tooth spacing meets product requirements. The zipper is pulled forward at a constant speed, and the zipper length is obtained based on the time and the zipper's travel speed.

[0034] The above embodiments do not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A zipper tooth spacing detection device, characterized in that: The device includes a chain guide plate and a counting wheel. The counting wheel has a chain tooth guide groove, and a multi-toothed gear is installed in the chain tooth guide groove. The multi-toothed gear and the counting wheel rotate synchronously. The counting wheel is connected to the encoder shaft. The encoder is mounted on the counting wheel plate. The counting wheel plate has a counting wheel plate shaft, and the counting wheel plate rotates along the counting wheel plate shaft. The counting wheel plate is equipped with a pushing mechanism, which drives the counting wheel plate to rotate along the counting wheel plate shaft, so that the counting wheel and the chain guide plate clamp the zipper. A zipper traction mechanism is provided on the left side of the chain guide plate, which is used to traction the zipper.

2. The zipper tooth spacing detection device according to claim 1, characterized in that: The counting wheel includes a first roller and a second roller, and the counting gear is disposed between the first roller and the second roller.

3. The zipper tooth spacing detection device according to claim 1, characterized in that: The chain support plate is provided with a chain cover plate, and the chain cover plate is provided with a chain tooth travel groove.

4. The zipper tooth spacing detection device according to claim 3, characterized in that: The chain cover plate includes a front chain cover plate and a rear chain cover plate, and the counting wheel is located between the front chain cover plate and the rear chain cover plate.

5. The zipper tooth spacing detection device according to claim 1, characterized in that: A belt clip is provided on the right side of the belt feed plate.

6. The zipper tooth spacing detection device according to claim 5, characterized in that: The belt clip includes an upper clip and a lower clip. The lower clip is provided with a clip zipper travel groove. The upper clip is provided with a spring rod hole. A spring rod is provided in the spring rod hole. The spring rod is provided on the lower clip. A spring is fitted on the spring rod. The spring causes the upper clip and the lower clip to clamp the zipper at the clip zipper travel groove.

7. The zipper tooth spacing detection device according to claim 6, characterized in that: The upper clip is equipped with a chain tooth pressing block, which presses against the chain tooth.

8. The zipper tooth spacing detection device according to claim 6, characterized in that: A spring limiting block is provided on the spring rod, and the spring is supported between the spring limiting block and the upper clamping plate.

9. The zipper tooth spacing detection device according to claim 6, characterized in that: The lower clamping piece is provided with a guide rod, and the upper clamping piece is provided with a guide rod hole, with the guide rod located inside the guide rod hole.

10. The zipper tooth spacing detection device according to claim 1, characterized in that: The zipper traction mechanism includes a pulley and a pressure belt. The pressure belt presses the zipper onto the pulley. The pulley is mounted on a servo motor, which drives the pulley to rotate.

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