CN103837542B - A kind of metallic bond sound of baby talk point defect pick-up unit and detection method thereof - Google Patents
A kind of metallic bond sound of baby talk point defect pick-up unit and detection method thereof Download PDFInfo
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- CN103837542B CN103837542B CN201410113161.1A CN201410113161A CN103837542B CN 103837542 B CN103837542 B CN 103837542B CN 201410113161 A CN201410113161 A CN 201410113161A CN 103837542 B CN103837542 B CN 103837542B
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Abstract
The present invention relates to a kind of metallic bond sound of baby talk point defect pick-up unit and detection method thereof, this pick-up unit comprises left side block, right side block, fiber laser arrays mechanism, electro-detection mechanism and control gear.This detection method is: surveyor's chain band to be checked enters chain tape channel, and the a-signal that electro-detection mechanism sends is transmitted successively formed loop by left lead-in wire, left side block, chain tooth, joint, the first stage clip, right lead-in wire, then control gear receives a-signal; Meanwhile, the left optical fiber of optical signals that the optical signal generator of fiber laser arrays mechanism sends passes to right optical fiber, if right optical fiber receives light signal, then control gear receives B signal, illustrates that chain tooth is defective; If right optical fiber left side is blocked by chain tooth and do not receive light signal, then control gear receives C signal, illustrates that chain tooth is qualified.The present invention can detect whether the production of metal tooth is specification product in time, and makes reply work in time, rate of reducing the number of rejects and seconds, and improves the standardization of the specification of product, improves the quality of products.
Description
Technical field
The present invention relates to a kind of device and the detection method thereof that utilize optical instrument and mechanical means to detect metal tooth defect, refer to a kind of metallic bond sound of baby talk point defect pick-up unit and detection method thereof especially.
Background technology
Existing market metal zip fastener, the shaping of chain tooth all adopts impact briquetting, and it makes it form designated shape and then form chain tooth by the privileged site of red needle impact chain tooth.Such a problem is often there is in actual production, if namely the head of the red needle of punching mechanism fracture situation time, the height of the chain sound of baby talk point gone out directly affects slide fastener physical property, when by inspecting by random samples manually, often cause a large amount of waste products, cause a large amount of wastes of material, production cost is high.Current Some Enterprises solves the problems referred to above by being arranged on line imaging detection system, but due to the small volume of chain tooth, the degree of accuracy that this detection system detects it is unsatisfactory, the quality of product is also unstable, and this detection system is expensive, production cost is high, is unfavorable for the market competition of product.
Summary of the invention
The invention provides a kind of metallic bond sound of baby talk point defect pick-up unit and detection method thereof, whether the state being difficult to Timeliness coverage red needle existed with the production overcoming existing metal tooth, the production being difficult to detect in time chain tooth is qualified, online image-forming detecting system is adopted to detect degree of accuracy undesirable, unstable product quality and equipment price is expensive, is unfavorable for the shortcomings such as the market competition of product.
The present invention adopts following technical scheme:
A kind of metallic bond sound of baby talk point defect pick-up unit, it comprises left side block, right side block, fiber laser arrays mechanism, electro-detection mechanism and control gear.Left side block, right side block with the use of, left side block is conductor, and right side block is insulator.Left side block and the opposed sidewall of right side block are provided with chain tape channel, and this chain tape channel comprises chain tooth passage and cloth tape channel, and the width of chain tooth passage is greater than the width of cloth tape channel.This fiber laser arrays mechanism comprises optical signal generator, left optical fiber, right optical fiber, optical signal receiver, optical signal generator is used for optical fiber left and sends light signal, optical signal receiver is for receiving the light signal from right optical fiber, the right-hand member of left optical fiber is located on left side block, the left end of right optical fiber is located on right side block, and the right-hand member end face of left optical fiber and right optical fiber left end end face can be arranged and the two height and chain sound of baby talk point match in light transmission.This electro-detection mechanism comprises left lead-in wire and the joint connected successively, the first stage clip, right lead-in wire, left lead-in wire connects left side block, and joint is located at immediately below this right optical fiber, and this shank extends in chain tooth passage, this first stage clip is assemblied in right side block, and this joint is pressed on the left end top of the first stage clip.This control gear is used for receiving respectively and processes the signal of this fiber laser arrays mechanism and electro-detection mechanism.
Further:
Above-mentioned left side block position is fixed, and this left side block is provided with guide pole, and above-mentioned right side block activity is assemblied on this guide pole, and this guide pole is equipped with the second stage clip, and the second stage clip is used for pushing right side block to left side block.This vibrational power flow is mainly in order to enter smoothly when enabling joint or when other situation chain tape thickness is larger and by above-mentioned chain tape channel.
Above-mentioned right side block is provided with detect aperture, and above-mentioned joint, the first stage clip are all assemblied in this detect aperture, and this detect aperture right-hand member lock is provided with screw, and this screw is pressed on the right-hand member top of this first stage clip, and above-mentioned right lead-in wire connects this screw.Above-mentioned left lead-in wire, joint, the first stage clip, screw, right lead-in wire are made by conductive material.
Right-hand member end face and the above-mentioned right optical fiber left end end face of above-mentioned left optical fiber are respectively equipped with clear area, and the shape of this clear area is the profile of the projection of the chain tooth that tooth point is qualified, and projecting direction is parallel with the Width of chain tooth.
Use a detection method for above-mentioned metallic bond sound of baby talk point defect pick-up unit, this detection method comprises the following step of carrying out successively:
A. surveyor's chain band to be checked enters chain tape channel, and the chain tooth on chain band enters chain tooth passage, and the strap below chain tooth enters cloth tape channel.
B. when chain tooth and junction contacts, electro-detection mechanism sends a-signal, and a-signal is transmitted successively formed loop by left lead-in wire, left side block, chain tooth, joint, the first stage clip, right lead-in wire, and a-signal passes to control gear by right lead-in wire, and control gear receives a-signal.
C. optical signal generator sends light signal, optical signals left optical fiber right-hand member end face passes to right optical fiber left end end face, if optical signal receiver receives the light signal of right optical fiber, then optical signal receiver sends B signal to control gear, if right optical fiber left side is blocked by chain tooth and do not receive light signal, then optical signal receiver sends C signal to control gear.
If what D. control gear received is a-signal and C signal simultaneously, being then qualified chain tooth with the chain tooth of junction contacts, if control gear receives is a-signal and B signal simultaneously, is then defective chain tooth with the chain tooth of junction contacts.
Pick-up unit of the present invention can be directly installed on tooth planter, and then automatically can detect whether punching point meets the demands, and differentiates the quality of red needle with this.
From the above-mentioned description to structure of the present invention, compared to the prior art, tool of the present invention has the following advantages: pick-up unit of the present invention can detect whether the production of metal tooth is specification product in time, and then whether understand the state of planting the red needle of tooth machine in time normal, occur that chain tooth can stop time defective producing and overhauling equipment in time in time, thus rate of reducing the number of rejects and seconds to the full extent, improve the utilization factor of material; In addition, whether the specification that the present invention more adequately can detect chain sound of baby talk point is qualified, effectively improves the standardization of the specification of product, improves the quality of products, and then ensure that slide fastener physical property; In addition, pick-up unit of the present invention can also calculate the number of teeth so that the fixed very little of tooth machine is planted in verification plant tooth, improves the accuracy of production further.Pick-up unit of the present invention can also calculate the spacing of adjacent two chain teeth by the time of adjacent two the chain teeth of the tool joint monitor of electro-detection mechanism, and then whether the chain tooth spacing arrangement detected on chain band is qualified, further ensure slide fastener physical property, ensure that the quality of product.
Accompanying drawing explanation
Fig. 1 is the structural representation of pick-up unit of the present invention.
Fig. 2 is the left TV structure schematic diagram after the removing left side block of the pick-up unit of invention.
Fig. 3 is the enlarged drawing of the local X in Fig. 2.
Fig. 4 is the main TV structure schematic diagram of device of the present invention.
Embodiment
With reference to the accompanying drawings the specific embodiment of the present invention is described.
With reference to Fig. 1, Fig. 2, Fig. 3, a kind of metallic bond sound of baby talk point defect pick-up unit, it comprises left side block 1, right side block 2, fiber laser arrays mechanism 3, electro-detection mechanism 4 and control gear.Left side block 1 position is fixed, and left side block 1 can directly be fixedly installed on plants on tooth machine.This left side block 1 is provided with guide pole 11, and right side block 2 activity is assemblied on this guide pole 11, and preferred guide pole 11 arranges two, and this is conducive to the Stable sliding of right side block 2.Continue with reference to Fig. 1, this guide pole 11 is equipped with the second stage clip 12, second stage clip 12 for pushing right side block 2 to left side block 1; This vibrational power flow is mainly in order to enter smoothly when enabling chain band 5 dock or when in other situation, chain band 5 thickness is larger and by following chain tape channel 10.
In addition, continue with reference to Fig. 4, left side block 1 is conductor, and right side block 2 is insulator.Left side block 1 and the opposed sidewall of right side block 2 are provided with chain tape channel 10, and this chain tape channel 10 comprises chain tooth path 10 1 and strap path 10 2, and the width of chain tooth path 10 1 is greater than the width of strap path 10 2.
Above-mentioned fiber laser arrays mechanism 3 comprises optical signal generator, left optical fiber 31, right optical fiber 32, optical signal receiver, optical signal generator is used for optical fiber 31 left and sends light signal, optical signal receiver is for receiving the light signal from right optical fiber 32, the right-hand member of left optical fiber 31 is located on left side block 1, and the left end of right optical fiber 32 is located on right side block 2.With reference to Fig. 3, right-hand member end face 310 and the above-mentioned right optical fiber 32 left end end face 320 of left optical fiber 31 are respectively equipped with clear area 312, the shape of this clear area 312 is the profile of the projection of the chain tooth 51 that tooth point 511 is qualified, projecting direction is parallel with the Width of chain tooth 51, and the right-hand member end face of left optical fiber 31 310 and right optical fiber 32 left end end face 320 can be arranged and the two height and chain tooth 51 tooth point 511 match in light transmission.With reference to Fig. 4, also can arrange a light source passage 200 respectively on left side block 1 and right side block 2, the profile of the xsect of this light source passage 200 and the profile of projection being the chain tooth 51 that tooth point 511 is qualified, projecting direction is parallel with the Width of chain tooth 51.
In addition, with reference to Fig. 4, joint 42, first stage clip 43, right lead-in wire 44 that above-mentioned electro-detection mechanism 4 comprises left lead-in wire 41 and connects successively.This joint 42 can be a spheroid, also can be rod-like structure, as long as the end (left end) that this joint 42 contacts with chain tooth 51 is spherically arranged, this can be avoided this joint 42 to block chain tooth 51.Left lead-in wire 41 connects left side block 1, joint 42 is located at immediately below this right optical fiber 32, this joint 42 part extends to (this can be able to realize by arranging certain limited step in following detect aperture 20) in chain tooth 51 passage, this first stage clip 43 is assemblied in right side block 2, and this joint 42 is pressed on the left end top of the first stage clip 43.This control gear is used for receiving respectively and processes the signal of this fiber laser arrays mechanism 3 and electro-detection mechanism 4.In addition, right side block 2 is provided with detect aperture 20, and above-mentioned joint 42, first stage clip 43 is all assemblied in this detect aperture 20, and this detect aperture 20 right-hand member lock is provided with screw 45, and this screw 45 is pressed on the right-hand member top of this first stage clip 43, and above-mentioned right lead-in wire 44 connects this screw 45.Above-mentioned left lead-in wire 41, joint 42, first stage clip 43, screw 45, right lead-in wire 44 are made by conductive material.
Use a detection method for above-mentioned metallic bond sound of baby talk point defect pick-up unit, this detection method comprises the following step of carrying out successively:
A. surveyor's chain band 5 to be checked enters chain tape channel 10, and the chain tooth 51 on chain band 5 enters chain tooth path 10 1, and the strap 52 below chain tooth 51 enters strap path 10 2;
B. when chain tooth 51 contacts with joint 42, electro-detection mechanism 4 sends a-signal (current signal), a-signal is transmitted successively formed loop by left lead-in wire 41, left side block 1, chain tooth 51, joint 42, first stage clip 43, right lead-in wire 44, a-signal passes to control gear by right lead-in wire 44, and control gear receives a-signal;
C. optical signal generator sends light signal (light), optical signals left optical fiber 31 right-hand member end face 310 passes to right optical fiber 32 left end end face 320, if optical signal receiver receives the light signal of right optical fiber 32, then optical signal receiver sends B signal to control gear, if right optical fiber 32 left side is blocked by chain tooth 51 and do not receive light signal, then optical signal receiver sends C signal to control gear;
If what D. control gear received is a-signal and C signal simultaneously, then the chain tooth that contacts with joint 42 51 is qualified chain tooth 51, if control gear receives is a-signal and B signal simultaneously, then the chain tooth 51 contact with joint 42 is defective chain tooth 51.
Pick-up unit of the present invention can detect whether the production of metal tooth 51 is specification product in time, and then whether understand the state of planting the red needle of tooth machine in time normal, occur that chain tooth 51 can stop time defective producing and overhauling equipment in time in time, thus rate of reducing the number of rejects and seconds to the full extent, improve the utilization factor of material.In addition, whether the specification that the present invention more adequately can detect chain tooth 51 tooth point 511 is qualified, effectively improves the standardization of the specification of product, improves the quality of products, and then ensure that chain tooth 51 physical properties.In addition, pick-up unit of the present invention can also calculate the number of teeth so that fixed cun of tooth machine is planted in verification plant tooth, and whether the quantity verifying the minimizing tooth that institute plants on each section of strap 52 is setting value, further the accuracy of raising production.The time that pick-up unit of the present invention can also detect adjacent two chain teeth 51 by the joint 42 of electro-detection mechanism 4 calculates the spacing of adjacent two chain teeth 51, and then whether the chain tooth 51 spacing arrangement detected on chain band 5 is qualified, further ensure chain tooth 51 physical properties, ensure that the quality of product.
Above are only the specific embodiment of the present invention, but design concept of the present invention is not limited thereto, all changes utilizing this design the present invention to be carried out to unsubstantiality, all should belong to the behavior of invading scope.
Claims (6)
1. a metallic bond sound of baby talk point defect pick-up unit, is characterized in that: comprise left side block, right side block, fiber laser arrays mechanism, electro-detection mechanism and control gear;
Left side block, right side block with the use of, left side block is conductor, and right side block is insulator; Left side block and the opposed sidewall of right side block are provided with chain tape channel, and this chain tape channel comprises chain tooth passage and cloth tape channel, and the width of chain tooth passage is greater than the width of cloth tape channel;
This fiber laser arrays mechanism comprises optical signal generator, left optical fiber, right optical fiber, optical signal receiver, optical signal generator is used for optical fiber left and sends light signal, optical signal receiver is for receiving the light signal from right optical fiber, the right-hand member of left optical fiber is located on left side block, the left end of right optical fiber is located on right side block, and the right-hand member end face of left optical fiber and right optical fiber left end end face can be arranged and the two height and chain sound of baby talk point match in light transmission;
This electro-detection mechanism comprises left lead-in wire and the joint connected successively, the first stage clip, right lead-in wire, left lead-in wire connects left side block, and joint is located at immediately below this right optical fiber, and this shank extends in chain tooth passage, this first stage clip is assemblied in right side block, and this joint is pressed on the left end top of the first stage clip;
This control gear is used for receiving respectively and processes the signal of this fiber laser arrays mechanism and electro-detection mechanism.
2. a kind of metallic bond sound of baby talk point defect pick-up unit as claimed in claim 1, it is characterized in that: described left side block position is fixed, this left side block is provided with guide pole, described right side block activity is assemblied on this guide pole, this guide pole is equipped with the second stage clip, and the second stage clip is used for pushing right side block to left side block.
3. a kind of metallic bond sound of baby talk point defect pick-up unit as claimed in claim 1, it is characterized in that: described right side block is provided with detect aperture, described joint, the first stage clip are all assemblied in this detect aperture, this detect aperture right-hand member lock is provided with screw, this screw is pressed on the right-hand member top of this first stage clip, and described right lead-in wire connects this screw.
4. a kind of metallic bond sound of baby talk point defect pick-up unit as claimed in claim 3, is characterized in that: described left lead-in wire, joint, the first stage clip, screw, right lead-in wire are made by conductive material.
5. a kind of metallic bond sound of baby talk point defect pick-up unit as claimed in claim 1, it is characterized in that: right-hand member end face and the described right optical fiber left end end face of described left optical fiber are respectively equipped with clear area, the shape of this clear area is the profile of the projection of the chain tooth that tooth point is qualified, and projecting direction is parallel with the Width of chain tooth.
6. use a detection method for the arbitrary described metallic bond sound of baby talk point defect pick-up unit of claim 1 to 4, it is characterized in that, this detection method comprises the following step of carrying out successively:
A. surveyor's chain band to be checked enters chain tape channel, and the chain tooth on chain band enters chain tooth passage, and the strap below chain tooth enters cloth tape channel;
B. when chain tooth and junction contacts, electro-detection mechanism sends a-signal, and a-signal is transmitted successively formed loop by left lead-in wire, left side block, chain tooth, joint, the first stage clip, right lead-in wire, and a-signal passes to control gear by right lead-in wire, and control gear receives a-signal;
C. optical signal generator sends light signal, optical signals left optical fiber right-hand member end face passes to right optical fiber left end end face, if optical signal receiver receives the light signal of right optical fiber, then optical signal receiver sends B signal to control gear, if right optical fiber left side is blocked by chain tooth and do not receive light signal, then optical signal receiver sends C signal to control gear;
If what D. control gear received is a-signal and these two signals of C signal, being then qualified chain tooth with the chain tooth of junction contacts, if control gear receives is a-signal and these two signals of B signal, is then defective chain tooth with the chain tooth of junction contacts.
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| CN201410113161.1A CN103837542B (en) | 2014-03-25 | 2014-03-25 | A kind of metallic bond sound of baby talk point defect pick-up unit and detection method thereof |
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| CN103837542B true CN103837542B (en) | 2015-11-18 |
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| CN105563782A (en) * | 2015-12-08 | 2016-05-11 | 驰马拉链（安徽）有限公司 | Tooth sensing device for zipper injection molding machine |
| CN109781022A (en) * | 2017-11-13 | 2019-05-21 | Ykk株式会社 | Slide fastener coupling element check device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04264208A (en) * | 1991-02-19 | 1992-09-21 | Matsushita Electric Ind Co Ltd | Chuck apparatus for inspection of width dimension of sheet continuous length component |
| CN101929873A (en) * | 2009-06-18 | 2010-12-29 | 福建浔兴拉链科技股份有限公司 | Zipper teeth detectors, zipper teeth detection method and zipper injection machine using detectors |
| TW201124697A (en) * | 2010-01-11 | 2011-07-16 | Univ Nat Yunlin Sci & Tech | Zipper image inspection device. |
| CN102495069A (en) * | 2011-12-07 | 2012-06-13 | 广东辉丰科技股份有限公司 | Method for detecting defects of chain belts of zipper on basis of digital image processing |
| TW201323858A (en) * | 2011-12-07 | 2013-06-16 | Yuh Pheng Machinery Co Ltd | Automatic optical inspection device for zipper surface and its inspection method |
-
2014
- 2014-03-25 CN CN201410113161.1A patent/CN103837542B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04264208A (en) * | 1991-02-19 | 1992-09-21 | Matsushita Electric Ind Co Ltd | Chuck apparatus for inspection of width dimension of sheet continuous length component |
| CN101929873A (en) * | 2009-06-18 | 2010-12-29 | 福建浔兴拉链科技股份有限公司 | Zipper teeth detectors, zipper teeth detection method and zipper injection machine using detectors |
| TW201124697A (en) * | 2010-01-11 | 2011-07-16 | Univ Nat Yunlin Sci & Tech | Zipper image inspection device. |
| CN102495069A (en) * | 2011-12-07 | 2012-06-13 | 广东辉丰科技股份有限公司 | Method for detecting defects of chain belts of zipper on basis of digital image processing |
| TW201323858A (en) * | 2011-12-07 | 2013-06-16 | Yuh Pheng Machinery Co Ltd | Automatic optical inspection device for zipper surface and its inspection method |
Non-Patent Citations (1)
| Title |
|---|
| 基于脉冲耦合神经网络金属拉链缺陷检测方法的研究;徐超 等;《制造业自动化》;20130915;第35卷(第9期);22-26页 * |
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Effective date of registration: 20180416 Address after: Hai Cun Bin Xi Lu Shenhu town Jinjiang city Fujian province 362246 Quanzhou City, No. 18 Patentee after: Fujian Jinjiang xunxing zipper Technology Co. Ltd. Address before: 362246 Fujian city of Quanzhou province Jinjiang City Shenhu Ukraine drain ditch East Industrial Zone Patentee before: Fujian SBS Zipper Science & Technology Co., Ltd. |