TWI738755B - Sewing machine with automatic stop device for detecting end of stitching - Google Patents
Sewing machine with automatic stop device for detecting end of stitching Download PDFInfo
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- TWI738755B TWI738755B TW106111114A TW106111114A TWI738755B TW I738755 B TWI738755 B TW I738755B TW 106111114 A TW106111114 A TW 106111114A TW 106111114 A TW106111114 A TW 106111114A TW I738755 B TWI738755 B TW I738755B
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B35/00—Work-feeding or -handling elements not otherwise provided for
- D05B35/02—Work-feeding or -handling elements not otherwise provided for for facilitating seaming; Hem-turning elements; Hemmers
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/14—Devices for changing speed or for reversing direction of rotation
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/22—Devices for stopping drive when sewing tools have reached a predetermined position
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Abstract
偵測被縫製布料是否存在之布料存在與否偵測感測器，具有由與電源電性連接之針板形成之固定接點、及透過縫紉機本體接地連接並能夠相對於固定接點相接/分離之可動接片，且構成為：藉由可動接片與固定接點接觸而打開饋電電路，阻斷向馬達之饋電而使縫紉機驅動停止，且藉由可動接片離開固定接點而關閉饋電電路，向馬達饋電而能夠驅動縫紉機；布料存在與否偵測感測器之可動接片，係配置於落針部之正前方且送布齒之饋送範圍內。藉此，能夠實現整體構造、電路構成之簡化、低成本化，並且絲毫不需操作熟練便能夠於縫合結束端到達落針部或距其極近之位置之時間點使縫紉機之驅動確實地停止，可有助於連續縫合時之效率提昇。 The fabric presence detection sensor for detecting the presence of the fabric to be sewn has a fixed contact formed by the needle plate electrically connected to the power supply, and is grounded through the sewing machine body and can be connected to the fixed contact/ Separate the movable contact piece, and the structure is that: when the movable contact piece contacts the fixed contact, the feeder circuit is opened, the power supply to the motor is blocked to stop the driving of the sewing machine, and the movable contact piece leaves the fixed contact. Turn off the power feeding circuit and feed power to the motor to drive the sewing machine; the movable contact of the fabric presence detection sensor is arranged directly in front of the needle drop and within the feeding range of the cloth feeding teeth. With this, it is possible to realize the simplification and cost reduction of the overall structure and circuit structure, and without any skill in operation, the driving of the sewing machine can be stopped reliably at the time when the end of the suture reaches the needle drop or the position very close to it. , Can help improve the efficiency of continuous stitching.
Description
本發明係關於一種具有偵測縫合結束端之自動停止裝置的縫紉機，其係用於例如將T恤之袖口等被縫製布料於平坦狀地而非直接筒狀地展開之狀態下，將布料端緣部分反折適當寬度並對該反折重疊之部分進行縫製之所謂之縫邊之情形時之馬達驅動式縫紉機，且構成為，偵測針板上是否存在被縫製布料，於偵測出不存在縫製布料時，打開向馬達之饋電電路，阻斷向該馬達之饋電，藉此使利用馬達進行之縫紉機之驅動自動地停止。 The present invention relates to a sewing machine with an automatic stop device for detecting the end of stitching, which is used to unfold the sewn fabric, such as the cuff of a T-shirt, in a flat shape rather than a straight cylindrical shape. A motor-driven sewing machine in the so-called hemming situation where the edge portion is folded back to an appropriate width and the overlapped portion is sewn. When sewing fabrics, open the power supply circuit to the motor and block the power supply to the motor, thereby automatically stopping the driving of the sewing machine by the motor.
上述縫邊於無面線之狀態下難以繼縫合結束端於針板上連續地產生空環。因此，採用如下之作業形態，即，以先行之被縫製布料之縫合結束端與後續之被縫製布料之縫合開始端之間不產生間隙之方式將被縫製布料連續不斷地送入並連續地進行縫製(縫邊)，於適當個數之連續縫合結束之時間點切斷空轉鏈縫。 When the seam has no upper thread, it is difficult to continue the suture end to produce a hollow loop on the needle plate continuously. Therefore, the following operation mode is adopted, that is, the sewing fabric is continuously fed in and continuously carried out in such a way that there is no gap between the stitching end of the preceding stitched fabric and the stitching start end of the subsequent stitched fabric For sewing (seam), the idle chain stitch is cut at the end of the appropriate number of continuous stitching.
於如上所述般之作業形態中，要求於先行之被縫製布料之縫合結束端到達落針部之時間點立刻停止驅動縫紉機。然而，欲藉由操作員之人工操作進行此種縫紉機之驅動停止，則需要相當熟練度。尤其是，為 了提高縫製作業效率，馬達一般高速旋轉，因此，即便能夠藉由人工操作時機恰好地輸入停止信號，亦會由於馬達之慣性旋轉之影響而使縫紉機於輸入停止信號之後仍暫時繼續驅動。因此，若非先行之被縫製布料之縫合結束端通過落針部並沿縫製行進方向移動相當距離之時間點，則縫紉機之驅動不會停止。其結果，於先行之被縫製布料之縫合結束端與其後送入之後續被縫製布料之縫合開始端之間產生特別大之間隙。 In the above-mentioned operation mode, it is required to stop the driving of the sewing machine immediately when the stitching end of the previously sewn fabric reaches the needle drop. However, it requires considerable proficiency to stop the driving of this type of sewing machine by manual operation of the operator. Especially for In order to improve the efficiency of the sewing industry, the motor generally rotates at a high speed. Therefore, even if the stop signal can be inputted by manual operation, the sewing machine will continue to drive temporarily after the stop signal is input due to the influence of the motor's inertial rotation. Therefore, if the sewing end of the non-previously sewn fabric passes through the needle drop and moves a considerable distance in the sewing travel direction, the driving of the sewing machine will not stop. As a result, there is a particularly large gap between the stitching end of the previously sewn fabric and the stitching start of the subsequent sewn fabric fed in.
因此，代替利用操作員之人力操作使縫紉機之驅動停止，習知，例如，如日本專利公告公報之特公昭40-22790號公報所揭示般，提出有如下縫紉機之自動停止裝置，其以如下方式構成，即，於馬達與縫紉機之從動部之間具備以能夠將兩者間分開之方式連結之離合器，設置有：電磁鐵裝置，其於通電時作用於上述離合器而將縫紉機之從動部與馬達連結；電磁開閉器，其包含於向該電磁鐵裝置饋電之饋電電路中並具有一對接點；及開閉器，其於向該電磁開閉器饋電之饋電電路中在壓腳與針板之間不存在被縫製布料之時可關閉電路，於兩者間存在被縫製布料之時可打開電路；並且於布料壓腳與針板之間不再存在被縫製布料之時，切斷向上述電磁鐵裝置之饋電，而使離合器作動，藉此，使縫紉機之作動自動地停止。 Therefore, instead of using the manual operation of the operator to stop the driving of the sewing machine, it is known that, for example, as disclosed in Japanese Patent Publication No. 40-22790, the following automatic stopping device for the sewing machine is proposed, which is as follows Structure, that is, between the motor and the driven part of the sewing machine is provided with a clutch that can separate the two, and is provided with an electromagnet device that acts on the above-mentioned clutch when energized to turn the driven part of the sewing machine Connected to the motor; an electromagnetic switch, which is included in the feed circuit that feeds the electromagnet device and has a pair of contacts; and the switch, which is in the presser foot in the feed circuit that feeds the electromagnetic switch The circuit can be closed when there is no fabric to be sewn between and the needle plate, and the circuit can be opened when there is fabric to be sewn between the two; and when there is no more fabric to be sewn between the fabric presser foot and the needle plate, cut The power supply to the above-mentioned electromagnet device is cut off, and the clutch is actuated, whereby the operation of the sewing machine is automatically stopped.
上述構成之習知之縫紉機之自動停止裝置無需如藉由人力操作使縫紉機之驅動停止之情形般之熟練度，並且不受操作時機(停止信 號之輸入時機)影響，而能夠於被縫製布料到達至既定位置之時，使縫紉機之驅動自動地停止。 The automatic stop device of the conventional sewing machine with the above-mentioned structure does not require the degree of proficiency as in the case of stopping the driving of the sewing machine by manual operation, and is not affected by the operation timing (stop signal). When the sewing machine reaches the predetermined position, the driving of the sewing machine can be automatically stopped.
然而，於上述習知之縫紉機之自動停止裝置中，由於使用有大量構成要素，因此整體構造會複雜化、大型化，例如，於馬達與縫紉機之從動部之間以能夠將兩者間分開之方式連結之離合器、於通電時作用於離合器而將縫紉機之從動部與馬達連結之電磁鐵裝置、向該電磁鐵裝置饋電之饋電電路所包含之具有一對接點之電磁開閉器、於壓腳與針板之間不存在被縫製布料之時關閉電路並於兩者間存在被縫製布料之時打開電路之開閉器。尤其是，電路構成複雜且容易高成本化。又，用以使縫紉機之驅動自動停止之條件係布料壓腳與針板之間不再存在被縫製布料之時，因此，若增加馬達之慣性旋轉之影響，則若非先行之被縫製布料之縫合結束端超過落針部相當距離之位置，則驅動縫紉機不會停止。其結果，於採用前文所述般之作業形態之情形時，存在如下問題，即，無法避免先行之被縫製布料之縫合結束端與後續之被縫製布料之縫合開始端之間產生多餘之間隙，而於進行連續縫製時該間隙累積，相應地會導致作業效率下降。 However, in the above-mentioned conventional automatic stopping device of the sewing machine, due to the use of a large number of components, the overall structure will be complicated and large, for example, between the motor and the driven part of the sewing machine to be able to separate the two. The clutch connected by the method, the electromagnet device that acts on the clutch when energized to connect the driven part of the sewing machine with the motor, the electromagnetic switch with a pair of contacts included in the feeder circuit that feeds the electromagnet device, and A switch that closes the circuit when there is no fabric to be sewn between the presser foot and the needle plate, and opens the circuit when there is fabric to be sewn between the two. In particular, the circuit configuration is complicated and the cost is easily increased. In addition, the condition for automatically stopping the driving of the sewing machine is when the fabric to be sewn is no longer between the fabric presser foot and the needle plate. Therefore, if the influence of the motor's inertial rotation is increased, the sewing of the fabric to be sewn is not performed in advance. If the end end exceeds the position of a considerable distance from the needle drop, the sewing machine will not be driven to stop. As a result, when the above-mentioned operation mode is adopted, there is a problem that it is impossible to avoid the occurrence of an extra gap between the stitching end of the previously sewn fabric and the stitching start end of the subsequent sewn fabric. When continuous sewing is performed, the gap is accumulated, and accordingly, the work efficiency is reduced.
本發明係鑒於上述實際情況而完成者，其目的在於提供一種具有偵測縫合結束端之自動停止裝置的縫紉機，其能夠實現整體構造、尤其是電路構成之簡化、低成本化，又，操作上絲毫無需熟練並且能夠於縫合結束端到達落針部或距其極近之位置之時間點使縫紉機之驅動確實地停止，可有助於連續縫合時之效率提昇。 The present invention was completed in view of the above-mentioned actual situation, and its purpose is to provide a sewing machine with an automatic stop device that detects the end of stitching, which can realize the overall structure, especially the simplification and low cost of the circuit structure, and the operation. No skill is required, and the driving of the sewing machine can be stopped at the time when the end of the suture reaches the needle drop or the position very close to it, which can help improve the efficiency of continuous suture.
為了達成上述目的，本發明之具有偵測縫合結束端之自動停 止裝置的縫紉機具備：縫紉機驅動用之馬達；針，其與該馬達之作動連動而上下往返運動；針板，其具有供該針通過之落針部；布料饋送裝置，其設置於該針板之下部並將載置於該針板上之被縫製布料沿既定之縫製行進方向移送；布料壓腳，其將上述被縫製布料壓抵於上述針板；及布料存在與否偵測感測器，其偵測上述針板上是否存在被縫製布料；其特徵在於：上述布料存在與否偵測感測器係以由與電源電性連接之上述針板形成之固定接點、及透過縫紉機本體接地連接並能夠相對於上述固定接點相接/分離之可動接片所構成，且構成為：藉由該可動接片與上述固定接點而打開上述饋電電路，阻斷向上述馬達之饋電而使縫紉機之驅動停止，藉由上述可動接片離開上述固定接點而關閉上述饋電電路，向上述馬達饋電而能夠驅動縫紉機；該布料存在與否偵測感測器之上述可動接片係配置於上述縫製行進方向上之上述落針部之正前方且上述布料饋送裝置之饋送範圍內。 In order to achieve the above purpose, the present invention has an automatic stop for detecting the end of stitching. The sewing machine of the stop device is equipped with: a motor for driving the sewing machine; a needle that moves up and down in conjunction with the actuation of the motor; a needle plate having a needle drop portion through which the needle passes; and a cloth feeding device provided on the needle plate The lower part moves the fabric to be sewn on the needle plate along the predetermined sewing travel direction; the fabric presser foot, which presses the fabric to be sewn against the needle plate; and the fabric presence detection sensor , It detects whether there is fabric to be sewn on the needle board; it is characterized in that the fabric presence detection sensor is a fixed contact formed by the needle board electrically connected to the power supply, and through the sewing machine body The ground connection is constituted by a movable contact that can be connected to/detached from the fixed contact, and is configured to open the feeder circuit by the movable contact and the fixed contact to block the feed to the motor The driving of the sewing machine is stopped by electricity, and the feed circuit is closed by the movable contact piece leaving the fixed contact, and the power is fed to the motor to drive the sewing machine; the presence or absence of the fabric is detected by the movable contact of the sensor The sheet is arranged directly in front of the needle drop portion in the sewing traveling direction and within the feeding range of the cloth feeding device.
根據具有如上所述般之特徵之本發明之具有偵測縫合結束端之自動停止裝置的縫紉機，用以使縫紉機之驅動停止之構成要素僅為布料存在與否偵測感測器，又，該布料存在與否偵測感測器係以由與馬達之電源電性連接之針板形成之固定接點、及透過縫紉機本體接地連接並能夠與上述固定接點分開之可動接片所構成，因此，與前文所述之習知之自動停止裝置相比，能夠大幅度削減構成要素而實現整體構造之簡化、小型化，尤其是，能夠實現電路構成之簡化、低成本化。 According to the sewing machine with the automatic stopping device for detecting the end of stitching of the present invention having the above-mentioned characteristics, the component used to stop the driving of the sewing machine is only the fabric presence detection sensor, and the The fabric presence detection sensor is composed of a fixed contact formed by the needle plate electrically connected to the power supply of the motor, and a movable contact that is grounded through the sewing machine body and can be separated from the fixed contact. Therefore, Compared with the conventional automatic stop device described above, the component elements can be greatly reduced to realize the simplification and miniaturization of the overall structure, and in particular, the simplification and cost reduction of the circuit configuration can be achieved.
而且，藉由將上述布料存在與否偵測感測器之可動接片配置於縫製行進方向上落針部之正前方且布料饋送裝置之饋送範圍內，而即便 增加了馬達之慣性旋轉之影響，亦能夠於先行之被縫製布料之縫合結束端到達落針部或距其極近之位置之時間點，在為了縫製先行之被縫製布料而保持對腳踏板等動作開關進行打開操作之狀態下仍自動地且確實地使縫紉機之驅動停止。其結果，於採用將被縫製布料連續不斷地送入而進行連續之縫製之作業形態之情形時，幾乎不會於先行之被縫製布料之縫合結束端與後續之被縫製布料之縫合開始端之間產生多餘之間隙，而能夠實現連續縫製時之效率提昇。 Moreover, by arranging the movable contact piece of the aforementioned fabric presence detection sensor directly in front of the needle drop in the sewing traveling direction and within the feeding range of the fabric feeding device, even Increase the influence of the inertial rotation of the motor, and it can also keep the foot pedal at the time when the stitching end of the previously sewn fabric reaches the needle drop or the position very close to it. The driving of the sewing machine is automatically and surely stopped even when the action switch is turned on. As a result, when the fabric to be sewn is continuously fed in for continuous sewing, there is almost no difference between the stitching end of the previously sewn fabric and the stitching start end of the subsequent sewn fabric. Excessive gaps are generated between them, and the efficiency of continuous sewing can be improved.
又，布料存在與否偵測感測器係配置於落針部之正前方且布料饋送裝置之饋送範圍內，因此，即便於被縫製布料之縫合開始端、縫合結束端與縫製行進方向大致正交時，與例如專利文獻1之布料存在與否偵測感測器配備於布料壓腳之側方之情形相比，亦發揮出能夠進行接縫形成部位前後之偵測而能夠實現偵測精度之明顯提昇之效果。
In addition, the fabric presence detection sensor is arranged directly in front of the needle drop part and within the feeding range of the fabric feeding device. Therefore, even when the sewing start end, the sewing end end and the sewing travel direction of the fabric to be sewn are approximately positive Compared with the case where the fabric presence detection sensor of
又，進一步地，作為布料存在與否偵測感測器，亦考慮於落針部之前方且布料壓腳之前方或者側方使用透過型或反射型之光感測器。然而，於該情形時，產生感測器錯誤偵測操作被縫製布料之操作員之手等而使縫紉機之驅動於較既定之位置更靠前之位置停止之不良情況之可能性較高，但於本發明中藉由使用固定接點及可動接片等自動感測器，而亦發揮不帶給操作員多餘之負擔或強求操作技術而能夠防止錯誤偵測導致產生縫紉機之驅動停止位置偏移等故障之效果。 Furthermore, as a fabric presence detection sensor, it is also considered to use a transmissive or reflective optical sensor in front of the needle drop and in front of or on the side of the fabric presser foot. However, in this case, there is a higher possibility that the sensor will erroneously detect the operation of the operator's hand sewing the fabric, which will cause the driving of the sewing machine to stop at a position higher than the predetermined position. In the present invention, by using automatic sensors such as fixed contacts and movable contacts, it also exerts no unnecessary burden on the operator or forced operation technology to prevent false detection from causing deviation of the driving stop position of the sewing machine Wait for the effect of the failure.
於本發明之具有偵測縫合結束端之自動停止裝置的縫紉機中，較佳為，上述布料存在與否偵測感測器之上述可動接片於側視觀察時呈大致半圓狀地形成於板彈簧構件之自由端部，該板彈簧構件係縫製行進 方向之前部透過電絕緣體而固定於上述布料壓腳並自該固定部朝向縫製行進方向之後方延伸出。 In the sewing machine with an automatic stop device for detecting the end of stitching of the present invention, it is preferable that the movable contact piece of the fabric presence detection sensor is formed in a substantially semicircular shape on the plate when viewed from the side. The free end of the spring member, the leaf spring member is sewn and travels The direction front part is fixed to the cloth presser foot through an electric insulator, and extends from the fixing part to the rear in the sewing traveling direction.
於該情形時，即便被縫製布料之厚度發生變化或表面有凹凸，可動接片亦會靈活應對該等情況，又，亦不會自與馬達之電源電性連接之布料壓腳處受到電性不良影響，因此，能夠防止該可動接片之損壞或變形、電性故障之產生而使感測器之偵測性能始終保持為確實且穩定良好之狀態。 In this case, even if the thickness of the fabric to be sewn changes or the surface has unevenness, the movable tabs will flexibly respond to these situations, and will not receive electricity from the fabric presser foot that is electrically connected to the power supply of the motor. The bad influence, therefore, can prevent the damage or deformation of the movable contact, and the generation of electrical faults, so that the detection performance of the sensor is always maintained in a reliable, stable and good state.
又，於本發明之具有偵測縫合結束端之自動停止裝置的縫紉機中，較佳為，於上述馬達設置有能夠將該馬達之旋轉速度變更為至少高低二段之可變速部，且具備儲存部及輸出部，該儲存部係於試縫合時學習透過上述可變速部使成為縫製對象之被縫製布料之至少縫製行進方向末端部分之旋轉速度低於縫製行進方向開始端部分之旋轉速度且適應於上述被縫製布料之速度變更歷程，並儲存該所學習之試縫合時之速度變更歷程，該輸出部係於正式縫合時讀出上述儲存部所儲存之適應於上述被縫製布料之速度變更歷程，透過上述可變速部而自動調整馬達之旋轉速度。 In addition, in the sewing machine with an automatic stop device for detecting the end of stitching of the present invention, it is preferable that the motor is provided with a variable speed part capable of changing the rotation speed of the motor to at least two stages, and has a storage Part and output part. The storage part learns during the trial sewing process, through the above-mentioned variable speed part, the rotation speed of at least the end part of the sewing travel direction of the sewing object to be sewn is lower than the rotation speed of the beginning end part of the sewing travel direction. The speed change history of the fabric to be sewn is stored, and the learned speed change history during trial stitching is stored. The output section reads out the speed change history stored in the storage section and adapted to the fabric to be sewn during formal stitching. , The rotation speed of the motor is automatically adjusted through the above-mentioned variable speed part.
於該情形時，當對相同種類、相同長度之多個被縫製布料連續進行縫製時，事先進行試縫合，學習於該試縫合時透過可變速部使被縫製布料之縫製行進方向之末端部分之旋轉速度低於縫製行進方向之始端部分之旋轉速度且適應於被縫製布料之速度變更歷程，預先將該所學習之試縫合時之速度變更歷程儲存於儲存部，於正式縫合時，自上述儲存部讀出適應於被縫製布料之速度變更歷程，透過可變速部而自動調整馬達之旋轉速度，藉此，將因馬達之慣性旋轉引起之影響控制於最小限度，而能夠停止驅動縫紉機，以使多個被縫製布料停止於該等縫合結束端幾乎不超過落 針部或距其極近之位置的位置。 In this case, when sewing multiple fabrics of the same type and length in succession, perform trial stitching in advance, and learn to use the variable speed part to make the end part of the sewn fabric in the direction of travel The rotation speed is lower than the rotation speed of the beginning part of the sewing travel direction and is adapted to the speed change history of the fabric to be sewn. The learned speed change history during trial stitching is stored in the storage section in advance, and when the formal sewing is completed, it is stored from the above The part reads out the speed change history of the fabric to be sewn, and automatically adjusts the rotation speed of the motor through the variable speed part, thereby minimizing the influence caused by the inertial rotation of the motor, and stopping the driving of the sewing machine to make Multiple sewn fabrics stop at the end of the stitching and hardly exceed the drop The position of the needle or very close to it.
進一步地，於本發明之具有偵測縫合結束端之自動停止裝置的縫紉機中，較佳為進一步具備：切線裝置，其將縫製後之針線切斷；及切線作動‧非作動切換用開關，其能夠於上述布料存在與否偵測感測器之偵測動作後將該切線裝置切換為切線作動之狀態與停止切線作動之狀態。 Furthermore, in the sewing machine with an automatic stop device for detecting the end of stitching of the present invention, it is preferable to further include: a thread cutting device which cuts the needle thread after sewing; and a thread cutting actuation/non-actuation switching switch, which The thread trimming device can be switched to the state of thread trimming and the state of stopping thread trimming after the detection of the presence or absence of the fabric.
於該情形時，能夠選擇性地獲得多個被縫製布料透過針線而連續一體化之縫製品及各被縫製布料各自被分斷開之縫製品，從而能夠實現縫製品之多樣化。 In this case, it is possible to selectively obtain a plurality of sewn products in which the fabric to be sewn is continuously integrated through the needle thread and the sewn products in which each fabric to be sewn is separately divided, so that the diversification of the sewn products can be realized.
1、1:針 1, 1: Needle
2:布料壓腳 2: Fabric presser foot
3:從動部 3: driven part
4:針板 4: Needle plate
4A:落針部 4A: Needle drop
4a:針板橫檔部 4a: Needle plate crosspiece
5:長槽 5: Long slot
6:送布齒(布料饋送裝置) 6: Feeding teeth (cloth feeding device)
20:縫紉機本體 20: Sewing machine body
21:縫紉機臂部 21: Sewing machine arm
22:縫紉機底部 22: The bottom of the sewing machine
23:馬達 23: Motor
24:布料存在與否偵測感測器 24: fabric presence detection sensor
24a:固定接點 24a: fixed contact
24b:可動接片 24b: movable splice
25:電源 25: power supply
26:饋電電路 26: Feeder circuit
27:感測器安裝台(電絕緣體) 27: Sensor mounting table (electrical insulator)
28:板彈簧構件 28: Leaf spring member
29:導件 29: guide
30:控制器 30: Controller
31:可變速部 31: Variable speed part
32:儲存部 32: Storage Department
33:輸出部 33: output section
35:切線裝置 35: Thread trimming device
36:切線作動‧非作動切換開關 36: Thread trimming operation, non-acting switch
37:腳踏板 37: Foot pedal
M:雙重鏈縫縫紉機 M: Double chain stitch sewing machine
W:T恤(縫製布料) W: T-shirt (sewn fabric)
Wa:袖口 Wa: cuff
Wb:反折重疊之袖口部分 Wb: The cuffs that are folded and overlapped
X:縫製行進方向 X: sewing direction
圖1係本發明之實施形態之具有偵測縫合結束端自動停止裝置之2針型雙重鏈縫縫紉機整體之外觀立體圖。 Fig. 1 is a perspective view of the overall appearance of a 2-needle double chain stitch sewing machine with an automatic stop device for detecting the end of stitching according to an embodiment of the present invention.
圖2係自針板之斜前方觀察該2針型雙重鏈縫縫紉機之主要部分之放大立體圖。 Figure 2 is an enlarged perspective view of the main part of the 2-needle double chain stitch sewing machine viewed obliquely from the front of the needle plate.
圖3係自針板之斜前方觀察該2針型雙重鏈縫縫紉機之主要部分且將布料壓腳之一部分切開之狀態之放大立體圖。 Figure 3 is an enlarged perspective view of the main part of the 2-needle double chain stitch sewing machine viewed obliquely from the front of the needle plate and a part of the fabric presser foot is cut.
圖4係圖1之2針型雙重鏈縫縫紉機之包含電路之概略方塊構成圖。 Fig. 4 is a schematic block diagram of the circuit including the 2-needle double chain stitch sewing machine of Fig. 1;
圖5係作為被縫製布料之一例之T恤之袖口之展開圖。 Figure 5 is an expanded view of the cuffs of a T-shirt as an example of the fabric to be sewn.
圖6係對圖1之T恤之袖口進行縫邊之狀態之展開圖。 Fig. 6 is an expanded view of the state where the cuffs of the T-shirt of Fig. 1 are sewn.
圖7係顯示圖1之2針型雙重鏈縫縫紉機之主要部分且縫紉機之驅動停止而先行被縫製布料之縫合結束端及後續被縫製布料之縫合開始端已被送入至布料壓腳之下部之狀態之放大立體圖。 Fig. 7 shows the main part of the 2-needle double chain stitch sewing machine of Fig. 1 and the driving of the sewing machine is stopped, and the stitching end of the previously sewn fabric and the stitching start end of the subsequent sewn fabric have been fed to the lower part of the fabric presser foot An enlarged three-dimensional view of its state.
圖8係顯示藉由圖1之2針型雙重鏈縫縫紉機對T恤之袖口連續進行縫邊之狀態之主要部分之立體圖。 Fig. 8 is a perspective view showing the main part of the state where the cuffs of the T-shirt are continuously sewn by the 2-needle double chain stitch sewing machine of Fig. 1.
以下，基於圖式對本發明之實施形態進行說明。 Hereinafter, an embodiment of the present invention will be described based on the drawings.
圖1係實施本發明之2針型雙重鏈縫縫紉機整體之外觀立體圖，圖2係自針板之斜前方觀察該2針型雙重鏈縫縫紉機之主要部分之放大立體圖，圖3係自針板之斜前方觀察該2針型雙重鏈縫縫紉機之主要部分且將布料壓腳之一部分切開之狀態之放大立體圖，圖4係該2針型雙重鏈縫縫紉機之包含電路之概略方塊構成圖。 Figure 1 is a perspective view of the overall appearance of the 2-needle double chain stitch sewing machine implementing the present invention. Figure 2 is an enlarged perspective view of the main parts of the 2-needle double chain stitch sewing machine viewed obliquely from the front of the needle plate. Figure 3 is from the needle plate. An enlarged perspective view of the main part of the 2-needle double chain stitch sewing machine with a part of the fabric presser cut open obliquely from the front. FIG. 4 is a schematic block diagram of the circuit including the circuit of the 2-needle double chain stitch sewing machine.
上述2針型雙重鏈縫縫紉機M係自縫紉機本體20之上部及下部朝向左側方大致相互平行地延伸設置有縫紉機臂部21與縫紉機底部22。於縫紉機臂部21之內部，組入有縫紉機主軸、使於與縫製行進方向大致正交之方向上並列配置之左右2根針1、1(參照圖2、圖3)上下往返運動之針驅動機構、使布料壓腳2(參照圖2、圖3等)上下往返運動之壓腳驅動機構、下述布料饋送裝置之驅動機構或向該等各驅動機構分配動力之動力分配機構等與下述馬達23連動連結之從動部3(參照圖4)。再者，上述各驅動機構或動力分配機構等從動部3於雙重鏈縫縫紉機M中眾所周知，因此，省略該等之詳細說明。
The above-mentioned 2-needle double chain stitch sewing machine M is provided with a
於上述縫紉機底部22之上表面，固定有具有供上述針1、1通過之落針部4A之針板4，於該針板4之下部，設置有多條送布齒6，該多條送布齒6作為將載置於針板4上之被縫製布料W朝向既定之縫製行進
方向X間歇地移送之布料饋送裝置，於形成於上述針板4之多個長槽5內分別沿縫製行進方向X及上下方向循環往返運動。
On the upper surface of the bottom 22 of the sewing machine, a
上述布料壓腳2具有將載置於針板4上之被縫製布料W壓抵於上述針板4及送布齒6側之功能，偵測該布料壓腳2與針板4之間是否存在被縫製布料W之布料存在與否偵測感測器24係設置於上述針板4上。
The
上述布料存在與否偵測感測器24由固定接點24a及可動接片24b所構成，該固定接點24a係藉由將上述針板4與上述馬達23之電源25電性連接(正極連接)而由該針板4形成，該可動接片24b透過接地線7及縫紉機本體20而接地連接(負極連接)並能夠與上述固定接點24a相接/分離。如圖4所示，該布料存在與否偵測感測器24介存於自上述電源25向上述馬達23之饋電電路26中，藉由上述可動接片24b與固定接點24a接觸而透過電磁開閉器打開上述饋電電路26，阻斷向馬達23之饋電而使馬達23之作動停止，從而使縫紉機M之上述從動部3之驅動停止，且藉由上述可動接片24b離開固定接點24a而透過上述電磁開閉器28關閉上述饋電電路26，向馬達23饋電而能夠使馬達23作動，於該狀態下，藉由對作為動作開關之腳踏板37進行踩踏操作，而驅動縫紉機M之上述從動部3。
The fabric
如圖2及圖3所明示般，上述布料存在與否偵測感測器24之可動接片24b係連續一體地形成於板彈簧構件28之自由端部，藉由板彈簧構件28朝下被彈壓，該板彈簧構件28係縫製行進方向X之前部透過以塑膠等電絕緣材料所構成之感測器安裝台27而螺固固定於上述布料壓腳2並自該固定部位朝向縫製行進方向X之上方側延伸出。該可動接片24b在側視觀察時形成為大致半圓狀，以該大致半圓狀可動接片24b之頂點相對
於位於上述落針部4A之正前方且上述多條送布齒6之饋送範圍內之中央之細的針板橫檔部4a相接/分離之方式而配置，該針板橫檔部4a構成布料存在與否偵測感測器24之固定接點24a。
As shown in Figures 2 and 3, the
再者，圖中29係導引上述布料存在與否偵測感測器24之可動接片24b相對於固定接點24a之相接/分離動作之導件，由在塑膠等電絕緣材料或鋁等導電構件之表面實施例如氧化鋁膜處理等電絕緣處理而成者所構成，並螺固固定於上述布料壓腳2之縫製行進方向X之上方側端部。
Furthermore, 29 in the figure is a guide that guides the connecting/separating action of the
又，如圖4所示，於對上述馬達23之作動進行控制之控制器30內，設置有能夠變更該馬達23之旋轉速度之可變速部31、儲存部32及輸出部33。上述控制器30係以如下方式構成，即，於進行被縫製布料W之試縫合時，學習藉由根據被縫製布料W之縫製長度或布料之種類等透過上述可變速部31使成為縫製對象之被縫製布料W之縫製行進方向末端部分之縫製時之旋轉速度低於縫製行進方向開始端部分之縫製時之旋轉速度之速度變更而適應於上述被縫製布料W之速度變更歷程，利用旋轉數測定器34對該所學習之速度變更歷程進行測量並預先儲存於上述儲存部32，於正式縫合時，藉由讀出上述儲存部32所儲存之適應於上述被縫製布料W之速度變更歷程並自上述輸出部33輸出至上述可變速部31，而基於試縫合時之速度變更歷程自動地對上述馬達23之旋轉速度進行速度調整。
In addition, as shown in FIG. 4, in the
除以上所說明之構成及裝置以外，如圖4所示，本實施形態之2針型雙重鏈縫縫紉機M還具備作為從動部3之一的將縫製後之針線切斷之切線裝置35。於該切線裝置35，設置有能夠於上述布料存在與否偵測感測器24之偵測動作後將該切線裝置35切換為切線作動之狀態與停止切線
作動之狀態之切線作動‧非作動切換開關36，且構成為，藉由於縫製前由操作員操作上述開關36，而能夠選擇使上述切線裝置35作動之狀態及不使其作動之狀態之任一者。
In addition to the structure and device described above, as shown in FIG. 4, the 2-needle double chain stitch sewing machine M of the present embodiment further includes a
其次，對如下情形時之縫製動作進行說明，即，使用以上述方式構成之本實施形態之2針型雙重鏈縫縫紉機M，對作為被縫製布料之一例之如圖5所示般之T恤W之袖口Wa，於平坦狀地而非筒狀地展開之狀態下，將袖口端部分反折適當寬度，並如圖6所示般對該反折重疊之袖口部分Wb進行縫邊，藉此補強袖口。 Next, the sewing operation in the case of using the 2-needle double chain stitch sewing machine M of this embodiment constructed in the above-mentioned manner will be described for a T-shirt as shown in Fig. 5 as an example of the fabric to be sewn. The cuff Wa of W is folded flat and not cylindrically. The end of the cuff is folded back to an appropriate width, and the folded cuff part Wb is sewn as shown in Figure 6, thereby Reinforce the cuffs.
將T恤W之反折重疊之袖口部分Wb載置於針板4上，並且藉由腳踏板37之重複踩踏而使布料壓腳2上升，將反折重疊之袖口部分Wb之縫合開始端部送入至布料壓腳2之下部時，上述布料存在與否偵測感測器24之可動接片24b對抗朝下之彈壓力而向上方位移從而離開固定接點24a。伴隨於此，饋電電路26透過電磁開閉器被關閉而開始自電源25向馬達23之饋電，從而能夠使該馬達23旋轉作動。藉由於該狀態下對腳踏板37進行踩踏操作，馬達23進行旋轉作動而驅動縫紉機從動部3，從而使針1、1及送布齒6等以既定之方式動作。
Place the overlapped cuff part Wb of the T-shirt W on the
伴隨著縫紉機從動部3被驅動，T恤W之反折重疊之袖口部分Wb透過多條送布齒6而沿縫製行進方向X被間歇移送，並且針1、1上下運動，藉此，反折重疊之袖口部分Wb被依序縫製(縫邊)。
As the
繼而，若進行縫邊而上述反折重疊之袖口部分Wb之末端(縫合結束端)被移送至落針部4A之正前方位置，則上述布料存在與否偵測感測器24之可動接片24b自反折重疊之袖口部分Wb脫離而向下方彈性
位移，該可動接片24b之頂點與位於上述落針部4A之正前方之細針板橫檔部4a、即布料存在與否偵測感測器24之固定接點24a接觸。伴隨於此，上述饋電電路26透過電磁開閉器被打開而阻斷自電源25向馬達23之饋電，因此，即便為保持對腳踏板37進行踩踏操作之狀態，該馬達23之旋轉作動亦會停止，縫紉機從動部3之驅動被停止。
Then, if the end of the cuff portion Wb (the end of stitching) that is folded and overlapped is moved to the position directly in front of the
如上所述，為了使縫紉機M之驅動停止，僅使用布料存在與否偵測感測器24，且該布料存在與否偵測感測器24係以由與馬達23之電源25電性連接之針板4之一部分(針板橫檔部4a)形成之固定接點24a、及透過縫紉機本體20而接地連接並能夠相對於上述固定接點24a分開之可動接片24b所構成，因此，與開篇所述之習知之自動停止裝置相比，大幅度削減用以使縫紉機驅動停止之構成要素，而實現了整體構造之簡化、小型化。尤其是，能夠實現電路構成之簡化、低成本化。
As described above, in order to stop the driving of the sewing machine M, only the fabric
而且，上述布料存在與否偵測感測器24之可動接片24b係配置於縫製行進方向X上落針部4A之正前方且利用送布齒6進行布料饋送之布料饋送範圍內之中央，因此，即便存在於阻斷向馬達23之饋電之後因馬達23之慣性旋轉而將反折重疊之袖口部分Wb沿縫製行進方向X稍微移送之情況，但其為數針程度，故亦能夠於反折重疊之袖口部分Wb之縫合結束端到達落針部4A或距其極近之位置之時間點，使包括布料饋送在內之縫紉機M之驅動自動地且確實地停止。因此，如圖7所示，於先行之反折重疊之袖口部分Wb之縫邊結束之後，對腳踏板37進行重複踩踏操作，使布料壓腳2上升，將下一個T恤W之反折重疊之袖口部分Wb載置於針板4上並送入至該針板4與布料壓腳2之間連續地進行縫邊，藉此，幾乎不會
於先行之反折重疊之袖口部分Wb之縫合結束端與其後送入之反折重疊之袖口部分Wb之縫合開始端之間產生多餘之間隙。因此，如圖8所示，於連續不斷地對相同種類之多個T恤W之反折重疊之袖口部分Wb進行連續縫邊之情形時，不會於各相鄰之布料間產生多餘之間隙，因此，能夠實現整體之連續縫製作業之效率提昇。
Moreover, the
又，布料存在與否偵測感測器24之可動接片24a係配置於落針部4A之正前方且利用送布齒6進行布料饋送之布料饋送範圍內之中央，因此，即便被縫製布料W之縫合開始端、縫合結束端與縫製行進方向大致正交時，與布料存在與否偵測感測器配置於布料壓腳2之側方之情形相比，亦能夠進行接縫形成部位前後之偵測，因此，無論縫合開始端、縫合結束端之形狀如何，均能夠實現偵測精度之明顯提昇。
In addition, the
尤其是，當連續地對相同種類、相同長度之多個T恤W之反折重疊之袖口部分Wb進行縫製時，事先進行試縫合，於該試縫合時學習以滿足透過控制器30內之可變速部31使縫製行進方向之末端部分之旋轉速度低於縫製行進方向之始端部分之旋轉速度之條件之方式適應於成為縫製對象之反折重疊之袖口部分Wb之縫邊之速度變更歷程，將該所學習之試縫合時之速度變更歷程預先儲存於儲存部32。而且，於正式縫合時，自上述儲存部32讀出適應於縫邊之速度變更歷程並自上述輸出部33輸出至上述可變速部31，藉此，能夠基於試縫合時之速度變更歷程，以縫合開始部分成為高速(例如，最高旋轉速度)且縫合結束端部分成為低速(例如，最高旋轉速度之一半以下之旋轉速度)之方式自動地調整上述馬達23之旋轉速度。藉此，整體之縫製效率維持較高之狀態，並且能夠將因馬達23之慣性
旋轉引起之影響控制於最小限度，能夠以使縫合結束端停止於幾乎不超過落針部4A或距其極近之位置的位置之方式停止驅動縫紉機M。
In particular, when the cuff portions Wb of a plurality of T-shirts W of the same type and the same length are sewn continuously, the trial stitching is performed in advance, and the trial stitching is learned during the trial stitching to meet the requirements in the
再者，於上述實施形態中，對在縫製開始前將切線裝置35透過開關36設為非作動狀態，而縫邊成多個T恤W之袖口部分透過針線而連續一體化之狀態之情形進行了說明，但亦可藉由於開始縫製時預先透過開關36將該切線裝置35切換為作動狀態，而獲得多個T恤W各自被分斷開之縫製品。
Furthermore, in the above-mentioned embodiment, the
又，於上述實施形態中，應用於2針型雙重鏈縫縫紉機，但並不限定於此，亦可應用於2針型平底形雙重鏈縫縫紉機，亦可應用於3針以上之多針型平底形雙重鏈縫縫紉機。 In addition, in the above embodiment, it is applied to a 2-needle double chain stitch sewing machine, but it is not limited to this. It can also be applied to a 2-needle flat bottom double chain stitch sewing machine, and it can also be applied to a multi-needle type with more than 3 needles. Flat bottom double chain stitch sewing machine.
1‧‧‧針 1‧‧‧Needle
2‧‧‧布料壓腳 2‧‧‧Fabric presser foot
4A‧‧‧針板 4A‧‧‧Needle plate
5‧‧‧長槽 5‧‧‧Long slot
6‧‧‧送布齒 6‧‧‧Feeding teeth
7‧‧‧接地線 7‧‧‧Ground wire
4a(24a)‧‧‧針板橫檔部(固定接點) 4a(24a)‧‧‧Needle plate crosspiece (fixed contact)
24b‧‧‧可動接片 24b‧‧‧movable splice
27‧‧‧感測器安裝台 27‧‧‧Sensor mounting table
28‧‧‧板彈簧構件 28‧‧‧Leaf spring member
29‧‧‧導件 29‧‧‧Guide
X‧‧‧縫製行進方向 X‧‧‧Sewing direction
Claims (3)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016086559A JP6861934B2 (en) | 2016-04-05 | 2016-04-05 | Sewing machine with automatic stop device for detecting the end of sewing |
| JPJP2016-086559 | 2016-04-05 |
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| Publication Number | Publication Date |
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| TW201742965A TW201742965A (en) | 2017-12-16 |
| TWI738755B true TWI738755B (en) | 2021-09-11 |
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| JP (1) | JP6861934B2 (en) |
| CN (1) | CN107268197B (en) |
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| CN108414519B (en) * | 2018-02-11 | 2021-01-26 | 常熟理工学院 | Detection apparatus for select syringe needle position of needle ware |
| JP2020142041A (en) * | 2019-03-07 | 2020-09-10 | ヤマトミシン製造株式会社 | Round fabric hem sewing machine |
| CN112011909B (en) * | 2019-05-31 | 2022-08-09 | 浙江中捷缝纫科技有限公司 | Sewing machine system, control method and device of sewing machine system |
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| JPS6278878U (en) * | 1985-11-08 | 1987-05-20 | ||
| TW229240B (en) * | 1992-07-17 | 1994-09-01 | Daiwa Spinning Co Ltd | |
| JP4022790B2 (en) | 1998-06-26 | 2007-12-19 | 富士通株式会社 | Insulating film and method for forming the same |
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| Publication number | Publication date |
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| CN107268197B (en) | 2021-06-11 |
| JP2017185177A (en) | 2017-10-12 |
| JP6861934B2 (en) | 2021-04-21 |
| TW201742965A (en) | 2017-12-16 |
| CN107268197A (en) | 2017-10-20 |
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