TWI722814B

TWI722814B - Sewing machine with adjustable needle pitch

Info

Publication number: TWI722814B
Application number: TW109107028A
Authority: TW
Inventors: 陳旭輝
Original assignee: 啟翔股份有限公司
Priority date: 2020-03-04
Filing date: 2020-03-04
Publication date: 2021-03-21
Also published as: TW202134498A; EP3875654A1; EP3875654B1; KR20210113018A; JP7098704B2; JP2021137550A; KR102466108B1

Abstract

The present invention relates to a sewing machine with adjustable needle pitch, mainly comprises a sewing head, a needle pitch adjustment mechanism and a needle pitch driving mechanism. The sewing head comprises an upper shaft, a needle bar and two needles. The upper shaft drives the needle bar to move vertically, so the two needles move with the needle bar simultaneously. The needle pitch adjustment mechanism comprises an adjustment lever and an adjustment unit, the adjustment lever penetrates the needle bar and being driven to rotate by the needle pitch adjustment mechanism, the adjustment unit is disposed between the adjustment lever and two needles and drives at least one needle to move horizontally by rotating the adjustment lever so the two needles can move close or far away from each other. Thereof, the present invention sewing machine sews according to different fabric condition of the sewing material by changing the distance between two needles; moreover, the present invention can adjust the distance between two needles during the sewing operation.

Description

可變針距縫紉機Variable stitch sewing machine

本發明有關於一種雙針縫紉機，特別是一種能在進行縫製作業過程中改變兩機針之間距離的可變針距縫紉機。The invention relates to a double-needle sewing machine, in particular to a variable-needle sewing machine capable of changing the distance between two needles during the sewing process.

隨著縫紉機自動化與高速化的演進，工業用縫紉機除了節省人力與堤高產能之外，現今更包含了針對各種不同目的而開發出對應功能的機型，如：單針花樣縫紉機(利用X-Y軸驅動自動移動材料，可任意變化縫製路徑)、單針旋轉頭花樣縫紉機(可進一步保持各車縫方向線跡的一致性)或是雙針旋轉頭花樣縫紉機(可同時縫製兩條等距的曲線線跡)。With the evolution of sewing machine automation and high speed, in addition to saving manpower and high productivity, industrial sewing machines now include models with corresponding functions developed for various purposes, such as: single-needle pattern sewing machines (using XY axis Drive the material to move automatically, the sewing path can be changed arbitrarily), single-needle rotary head pattern sewing machine (which can further maintain the consistency of stitches in each sewing direction) or double needle rotary head pattern sewing machine (can sew two equally spaced curves at the same time) Stitch).

然而，雙針平行的線跡能夠讓車縫物產生較佳的美觀功效，進而生活中的各種服飾皆可看到雙針車縫的應用，請參圖1A與圖1B所示，雙針旋轉頭花樣縫紉機80是一種雙針電腦縫紉機，而雙針旋轉頭花樣縫紉機80的上方具有一頭部旋轉單元81，並於頭部旋轉單元81的下方設有一底座旋轉單元82以及一X-Y軸送料單元83，其中，頭部旋轉單元81能帶動一針棒84進行轉動，使一安裝於針棒84末端的針夾85能同步帶動兩彼此間隔設置的機針86進行轉動，而當針棒84進行轉動時，底座旋轉單元82同時帶動一針板87與底座(圖未示)進行轉動，使針板87的兩針孔871能分別持續一對一對準於其中一個機針86，另外，X-Y軸送料單元83則透過夾具來帶動車縫物沿著圖式中的X軸方向與Y軸方向進行移動，藉此，頭部旋轉單元81、底座旋轉單元82與X-Y軸送料單元83三者相互配合而能在車縫物上車縫形成兩條平行並列的線跡，進而就能取代傳統人工操作雙針縫紉機，進而能以提高物品縫製的作業效率。However, the parallel stitches of the double needles can produce better aesthetic effects on the sewn, and all kinds of clothing in life can be seen in the application of double needle sewing. Please refer to Figure 1A and Figure 1B, the double needle rotation The head pattern sewing machine 80 is a double-needle computerized sewing machine, and the double-needle rotary head pattern sewing machine 80 is provided with a head rotating unit 81 above, and a base rotating unit 82 and an XY axis feeding unit are provided below the head rotating unit 81 83. The head rotation unit 81 can drive a needle bar 84 to rotate, so that a needle clamp 85 installed at the end of the needle bar 84 can synchronously drive two needles 86 spaced apart from each other to rotate, and when the needle bar 84 performs When rotating, the base rotating unit 82 simultaneously drives a needle plate 87 and a base (not shown) to rotate, so that the two needle holes 871 of the needle plate 87 can be continuously aligned with one of the needles 86 one by one. In addition, XY The shaft feeding unit 83 drives the sewing object to move along the X-axis direction and the Y-axis direction in the figure through the clamp, so that the head rotation unit 81, the base rotation unit 82 and the XY-axis feeding unit 83 interact with each other. In combination, two parallel stitches can be formed on the sewing object, which can replace the traditional manual double-needle sewing machine, thereby improving the work efficiency of sewing articles.

然而，車縫物的種類眾多，其中，有些車縫物的厚度較厚，而有些車縫物的厚度較薄，並且，有些車縫物的材質較軟，而有些車縫物的材質較硬，而不同的布料條件所需要使用的針距與縫目將會有所不同，一般來說，雙針旋轉頭花樣縫紉機80縫製厚度較厚的車縫物或材質較硬的車縫務必須增加兩機針86之間的距離，反之，雙針旋轉頭花樣縫紉機80縫製厚度較薄的車縫物或材質較軟的車縫務必須減少兩機針86之間的距離，因此，雙針旋轉頭花樣縫紉機80在縫製不同布料條件的車縫物時，操作人員必須在雙針旋轉頭花樣縫紉機80停止運轉的狀態下手動更換針夾85與針板87，進而可知，雙針旋轉頭花樣縫紉機80欲要縫製另一種車縫物時，操作人員就需要花費時間更換針夾85與針板87，進而難以提高生產效率。However, there are many types of sewing materials. Among them, some sewing materials are thicker, and some sewing materials are thinner, and some sewing materials are softer, while some sewing materials are harder. , And different fabric conditions require different stitch lengths and stitches. Generally speaking, the double-needle rotary head pattern sewing machine 80 must be used to sew thicker sewing materials or harder materials. The distance between the two needles 86, on the contrary, the double-needle rotary head pattern sewing machine 80 must reduce the distance between the two needles 86 when sewing thinner sewing or soft material sewing. Therefore, the double-needle rotates When the head pattern sewing machine 80 sews objects with different fabric conditions, the operator must manually replace the needle clamp 85 and the needle plate 87 with the double-needle rotary head pattern sewing machine 80 stopped. It can then be seen that the double-needle rotary head pattern sewing machine When 80 wants to sew another kind of sewing material, the operator needs to spend time to replace the needle clamp 85 and the needle plate 87, which makes it difficult to improve the production efficiency.

本發明的主要目的在於改良針棒與兩機針之間的加裝針距調整機構，讓至少一支機針能進行橫向移動，使兩機針能彼此靠近或遠離來改變兩機針之間的距離，進而使單一縫紉機透過針距調整機構來改變兩機針之間的距離而能對不同針距條件的車縫物進行車縫作業，致使不但能提高縫紉機的生產效率，還能避免操作人員需要花費時間更換針夾與針板。The main purpose of the present invention is to improve the additional stitch length adjustment mechanism between the needle bar and the two needles, so that at least one needle can move laterally, so that the two needles can approach or move away from each other to change the gap between the two needles. In turn, a single sewing machine can change the distance between the two needles through the stitch length adjustment mechanism, and can sew objects with different stitch length conditions, which not only improves the production efficiency of the sewing machine, but also avoids operations. It takes time for personnel to replace the needle clamp and needle plate.

本發明的次要目的在於縫紉機對車縫物縫製兩條縫紉線跡的過程中，至少一支機針能進行直線移動來以改變兩機針之間的距離，而車頭同時也會進行轉動，進而能在縫製的過程中隨意控制兩機針的相對距離及角度位置，藉此，縫紉機不但能能適用多種縫製圖案，也能提高縫製圖案的美觀性。The secondary purpose of the present invention is that when the sewing machine sews two sewing stitches on the sewing material, at least one needle can move linearly to change the distance between the two needles, and the head of the machine will also rotate at the same time. Furthermore, the relative distance and angular position of the two needles can be controlled at will during the sewing process, whereby the sewing machine can not only be applied to a variety of sewing patterns, but also can improve the aesthetics of the sewing patterns.

本發明的再一目的在於針棒進行上下移動的過程中，至少一支機針能同時進行橫向移動以改變兩機針之間的距離，使縫紉機能在同一個車縫物上縫製出複數組不同寬度的平行線跡圖案，或是同一組雙線的縫製路徑變化出不同寬度的縫紉線跡。Another object of the present invention is that when the needle bar moves up and down, at least one needle can move laterally at the same time to change the distance between the two needles, so that the sewing machine can sew multiple groups on the same sewing material. Parallel stitch patterns of different widths, or the sewing path of the same group of double threads, change sewing stitches of different widths.

為實現前述目的，本發明可變針距縫紉機具有一車頭、一針距調整機構以及一針距驅動機構，上述車頭具有一上軸以及一針棒，上述上軸能進行轉動以帶動上述針棒進行上下移動，使位在上述針棒下端的兩機針同步與上述針棒進行移動，而上述針距調整機構具有一穿設於上述針棒的調整桿以及一位在上述調整桿與兩機針之間的調整單元，上述調整桿受到上述針距驅動機構帶動而能進行轉動，而上述調整單元透過進行旋轉運動的上述調整桿而能帶動至少一上述機針進行橫向運動，使得上述兩機針能彼此靠近或遠離。In order to achieve the foregoing objective, the variable stitch length sewing machine of the present invention has a headstock, a stitch length adjusting mechanism, and a stitch length driving mechanism. The headstock has an upper shaft and a needle bar, and the upper shaft can rotate to drive the needle bar. Move up and down to make the two needles located at the lower end of the needle bar move synchronously with the needle bar, and the needle length adjustment mechanism has an adjusting rod penetrating the needle bar and a position between the adjusting rod and the two needle bars. The adjustment unit between the needles, the adjustment lever is driven by the needle pitch drive mechanism to rotate, and the adjustment unit can drive at least one of the needles to move laterally through the adjustment lever for rotating movement, so that the two machines The needles can be close to or away from each other.

於較佳實施例中，上述可變針距縫紉機進一步包含兩釜台、一旋梭驅動機構以及一孔距驅動機構，每一個上述釜台具有一能進行轉動的旋梭以及一位在上述旋梭一側的針板，而上述針板具有一對位於其中一個上述機針的針孔，而上述旋梭驅動機構能帶動每一個上述釜台的旋梭同時進行轉動，其中，在上述兩機針彼此靠近或遠離時，上述孔距驅動機構能同步帶動至少一個釜台進行橫向移動，使上述兩針孔之間的距離相同於上述兩機針之間的距離。In a preferred embodiment, the above-mentioned variable stitch sewing machine further includes two kettle tables, a rotary shuttle drive mechanism, and a hole pitch drive mechanism. Each of the kettle tables has a rotary hook capable of rotating and a seat on the rotary shuttle. The needle plate on the side, and the needle plate has a pair of needle holes located in one of the needles, and the hook drive mechanism can drive the hooks of each of the kettle tables to rotate at the same time, wherein the two needles are close to each other Or when it is far away, the hole pitch driving mechanism can synchronously drive at least one autoclave table to move laterally, so that the distance between the two needle holes is the same as the distance between the two needles.

於一較佳實施例中，上述調整單元具有一連接於上述調整桿的齒輪以及一連接於其中一個上述機針的第一齒條，上述齒輪受到上述調整桿帶動而進行旋轉，而上述第一齒條嚙合於上述齒輪，使上述第一齒條能帶動其中一個上述機針沿著一相交於上述針棒的第一方向進行橫向移動。In a preferred embodiment, the adjustment unit has a gear connected to the adjustment lever and a first rack connected to one of the needles, the gear is driven by the adjustment lever to rotate, and the first The rack is meshed with the gear, so that the first rack can drive one of the needles to move laterally along a first direction that intersects the needle bar.

上述孔距驅動機構具有一能進行移動的第一移動塊以及一能進行轉動的第一傳動桿，上述第一移動塊連接於其中一個上述釜台，並與上述第一傳動桿之間設有一能將旋轉運動改變為直線運動的第一螺桿單元，而上述第一傳動桿沿著一第一轉動方向進行傳動，使上述第一移動塊透過上述第一螺桿單元而帶動其中一個上述釜台進行移動。The pitch drive mechanism has a first movable block that can move and a first transmission rod that can be rotated. The first movable block is connected to one of the kettle tables and is provided with an energy source between the first transmission rod. The first screw unit that changes the rotational motion to the linear motion, and the first transmission rod transmits along a first rotation direction, so that the first moving block drives one of the kettle tables to move through the first screw unit.

於另一較佳實施例中，上述齒輪於相對上述第一齒條的一側嚙合一第二齒條，上述第二齒條連接於另一個上述機針，使上述齒輪進行轉動時，上述第一齒條帶動其中一個上述機針沿著上述第一方向進行橫向直線移動，而上述第二齒條同時帶動另一個上述機針沿著一相反於上述第一方向的第二方向進行橫向直線移動。In another preferred embodiment, the gear meshes with a second rack on a side opposite to the first rack, and the second rack is connected to the other needle, so that when the gear rotates, the first rack A rack drives one of the needles to move horizontally and linearly along the first direction, while the second rack drives the other needle to move horizontally and linearly along a second direction opposite to the first direction. .

此外，上述孔距驅動機構進一步具有一連接於另一個上述釜台的第二移動塊以及一間隔排列於上述第一傳動桿的第二傳動桿，上述第二移動塊與上述第二傳動桿之間設有一能將旋轉運動改變為直線運動的第二螺桿單元，而上述第二傳動桿與第一傳動桿之間設有一能改變轉動方向的轉換單元，使上述第一傳動桿沿著上述第一轉動方向進行轉動時，上述第二傳動桿透過上述轉換單元而沿著一相反於上述第一轉動方向的第二轉動方向進行轉動，進而使上述第一移動塊與第二移動塊兩者朝向相反方向進行移動。In addition, the pitch driving mechanism further has a second moving block connected to the other of the kettle table and a second transmission rod arranged at intervals on the first transmission rod, between the second moving block and the second transmission rod There is a second screw unit that can change the rotational motion into linear motion, and a conversion unit that can change the direction of rotation is provided between the second transmission rod and the first transmission rod, so that the first transmission rod follows the first transmission rod. When the rotation direction is rotated, the second transmission rod rotates in a second rotation direction opposite to the first rotation direction through the conversion unit, thereby causing the first moving block and the second moving block to face opposite directions Direction to move.

於前述兩實施例中，當上述針棒進行上下移動的過程中，上述針距驅動機構能同時帶動上述調整桿進行轉動，其中，上述車頭安裝一能產生旋轉動力的車頭轉動機構，而上述車頭轉動機構能帶動上述車頭進行轉動，使上述針距調整機構與針距驅動機構兩者同步與上述車頭進行轉動，另外，上述兩釜台、旋梭驅動機構與孔距驅動機構四者都連接於一能自由轉動的活動座，上述活動座安裝一能產生旋轉動力的釜台驅動機構，上述釜台驅動機構能經由上述活動座而同時帶動上述兩釜台、旋梭驅動機構與孔距驅動機構四者同時進行轉動。In the foregoing two embodiments, when the needle bar moves up and down, the needle pitch drive mechanism can simultaneously drive the adjusting rod to rotate, wherein the head of the head is equipped with a head rotating mechanism capable of generating rotational power, and the head of the head The rotating mechanism can drive the head of the car to rotate, so that the needle length adjustment mechanism and the needle length drive mechanism are both synchronized with the head of the car. In addition, the two kettle tables, the hook drive mechanism and the hole distance drive mechanism are all connected to one. A movable seat that can rotate freely, the movable seat is equipped with a retort table driving mechanism that can generate rotational power, and the retort table driving mechanism can simultaneously drive the two retort tables, the rotary hook driving mechanism and the hole pitch driving mechanism through the movable seat. Rotate.

然而，上述針距驅動機構具有一遠離於上述針棒的針距驅動源以及一連接於上述針距驅動源的針距傳動單元，上述針距傳動單元與調整桿之間設有一針距同步單元以讓上述調整桿能相對於上述針距傳動單元進行軸向移動，而上述針距同步單元能讓上述針距傳動單元與調整桿兩者能同步進行旋轉，於較佳實施例中，上述針距同步單元具有一針距同步凹槽以及一針距同步凸柱，上述針距同步凹槽形成於上述針距傳動單元與調整桿兩者其中之一，而上述針距同步凸柱形成於上述針距傳動單元與調整桿兩者其中之另一者，並穿設於上述針距同步凹槽，使上述調整桿進行上下移動的過程中，上述針距同步凸柱會在上述針距同步凹槽的內部上下往復移動。However, the above-mentioned stitch length drive mechanism has a stitch length drive source away from the needle bar and a stitch length transmission unit connected to the above-mentioned stitch length drive source, and a stitch length synchronization unit is provided between the above-mentioned stitch length transmission unit and the adjusting rod. In order to allow the adjusting rod to move axially relative to the needle pitch transmission unit, and the needle pitch synchronization unit to enable the needle pitch transmission unit and the adjusting rod to rotate synchronously, in a preferred embodiment, the needle The pitch synchronization unit has a needle pitch synchronization groove and a needle pitch synchronization protrusion. The needle distance synchronization groove is formed in one of the needle pitch transmission unit and the adjusting rod, and the needle distance synchronization protrusion is formed in the above The other one of the stitch length transmission unit and the adjusting rod is inserted in the above-mentioned stitch length synchronization groove, so that during the up and down movement of the above-mentioned adjusting rod, the above-mentioned stitch length synchronization convex column will be in the above-mentioned stitch length synchronization concave The inside of the tank reciprocates up and down.

再者，上述旋梭驅動機構具有一能進行轉動的旋梭轉動軸，上述旋梭轉動軸與上述釜台之間設有一旋梭同步單元以讓上述釜台能相對於上述旋梭轉動軸進行移動，而上述旋梭同步單元能讓上述旋梭與旋梭轉動軸兩者能同步旋轉，於此實施例中，上述旋梭同步單元具有一花件軸以及一花件套筒，上述花件軸與花件套筒兩者其中之一形成於上述旋梭轉動軸，另一者形成於上述釜台，而上述花件軸位在上述花件套筒的內部，使上述釜台進行移動時能以隨時改變上述花件軸與花件套筒之間的相對軸向位置。Furthermore, the rotary hook driving mechanism has a rotary hook rotary shaft capable of rotating, and a rotary hook synchronization unit is provided between the rotary hook rotary shaft and the kettle base to allow the kettle base to move relative to the rotary hook rotary shaft. The above-mentioned rotary hook synchronization unit allows both the above-mentioned rotary hook and the rotating shaft of the rotary hook to rotate synchronously. In this embodiment, the above-mentioned rotary hook synchronization unit has a flower shaft and a flower sleeve, and the flower shaft and One of the flower sleeves is formed on the rotating shaft of the rotary hook, the other is formed on the kettle table, and the flower member axis is located inside the flower sleeve, so that the kettle table can be changed at any time when moving The relative axial position between the flower shaft and the flower sleeve.

本發明的特點在於針棒與兩機針之間設置有能將旋轉運動轉變為直線運動的調整單元，使針距驅動機構帶動調整桿進行轉動時，至少一個機針能透過調整單元進行移動來改變兩機針之間的距離，藉此，本案可變針距縫紉機能在不更換針夾的狀態下，透過針距驅動機構改變兩機針之間的距離而能針對不同針距條件的車縫物進行車縫作業，進而不但能提高縫紉機的生產效率，還能避免操作人員需要花費時間更換針夾與針板。The feature of the present invention is that an adjustment unit that can convert rotary motion into linear motion is provided between the needle bar and the two needles, so that when the needle pitch drive mechanism drives the adjustment rod to rotate, at least one needle can move through the adjustment unit. By changing the distance between the two needles, the variable stitch length sewing machine of this case can change the distance between the two needles through the needle-pitch drive mechanism without changing the needle clamp, so that it can be used for different stitching conditions. The sewing operation of the sewing material can not only improve the production efficiency of the sewing machine, but also avoid the need for the operator to spend time replacing the needle clamp and the needle plate.

此外，針距驅動機構的針距傳動單元與針棒之間設有針距同步單元以讓調整桿能相對於針距傳動單元進行軸向移動，而針距同步單元能確保針距傳動單元與調整桿兩者能同步進行旋轉，藉此，針棒進行上下移動的過程中，調整桿能同時進行轉動以改變兩機針之間的距離，使縫紉機能在同一個車縫物上縫製出兩條不同寬度的縫紉線跡。In addition, a stitch length synchronization unit is provided between the stitch length transmission unit of the needle length drive mechanism and the needle bar to allow the adjustment rod to move axially relative to the needle length transmission unit, and the stitch length synchronization unit can ensure that the stitch length transmission unit and the needle bar can move axially. The adjusting rod can be rotated synchronously, so that when the needle bar moves up and down, the adjusting rod can rotate at the same time to change the distance between the two needles, so that the sewing machine can sew two pieces on the same sewing object. Sewing stitches of different widths.

再者，車頭能受到車頭轉動機構的帶動而能進行轉動，使可變針距縫紉機對車縫物縫製兩條縫紉線跡的過程中，針距驅動機構不但能帶動調整桿進行轉動來改變兩機針之間的距離，而車頭轉動機構同時能帶動車頭進行轉動，進而進而能在縫製的過程中隨意控制兩機針的相對距離及角度位置。Furthermore, the head of the head can be driven by the head rotating mechanism to rotate, so that when the variable stitch sewing machine sews two stitches on the sewing material, the needle drive mechanism can not only drive the adjusting rod to rotate to change the two stitches. The distance between the needles, and the head turning mechanism can simultaneously drive the head to rotate, and then the relative distance and angular position of the two needles can be controlled at will during the sewing process.

茲為便於更進一步對本發明之構造、使用及其特徵有更深一層明確、詳實的認識與瞭解，爰舉出較佳實施例，配合圖式詳細說明如下：In order to facilitate a deeper, clear and detailed knowledge and understanding of the structure, use and characteristics of the present invention, a preferred embodiment is given, which is described in detail in conjunction with the drawings as follows:

請參閱圖2與圖3所示，於第一較佳實施例中，本發明可變針距縫紉機1具有一縫紉機本體10，縫紉機本體10設有一車頭11、一支柱12以及一座體13三部分，請參閱圖3與圖4，車頭11的內部設有一針棒驅動單元14、一針棒單元15以及一內壓腳單元16，並安裝有一車頭轉動機構20、一針距調整機構30以及一針距驅動機構40。2 and 3, in the first preferred embodiment, the variable stitch sewing machine 1 of the present invention has a sewing machine body 10, and the sewing machine body 10 has three parts: a head 11, a pillar 12, and a seat 13 , Please refer to Figures 3 and 4, inside the head 11 is provided with a needle bar drive unit 14, a needle bar unit 15 and an inner presser foot unit 16, and is installed with a head rotating mechanism 20, a stitch length adjustment mechanism 30 and a Needle pitch drive mechanism 40.

請參閱圖3與圖4，針棒驅動單元14具有一固定於車頭11的針棒驅動源141以及一能相對於車頭11進行轉動的上軸142，針棒驅動源141組裝一位在車頭11外部的第一針棒皮帶輪143，而第一針棒皮帶輪143裝設有一針棒傳動皮帶144以連接於一連接於上軸142的第二針棒皮帶輪145，使針棒驅動源141能經由第一針棒皮帶輪143、針棒傳動皮帶144以及第二針棒皮帶輪145來帶動上軸142進行轉動，其中，上軸142於遠離第二針棒皮帶輪145的一端設有一曲柄軸連桿146來連接於針棒單元15。3 and 4, the needle bar driving unit 14 has a needle bar driving source 141 fixed to the front of the car 11 and an upper shaft 142 that can rotate relative to the front of the car 11, the needle bar driving source 141 is assembled in the front of the car 11 The outer first needle bar pulley 143, and the first needle bar pulley 143 is equipped with a needle bar transmission belt 144 to connect to a second needle bar pulley 145 connected to the upper shaft 142, so that the needle bar drive source 141 can pass through the A needle bar pulley 143, a needle bar transmission belt 144, and a second needle bar pulley 145 drive the upper shaft 142 to rotate. The upper shaft 142 is provided with a crank shaft connecting rod 146 at the end away from the second needle bar pulley 145 for connection于pin bar unit 15.

請參閱圖4與圖5所示，針棒單元15具有一垂直設置的針棒151，針棒151呈現中空樣態，而針棒151連接於針棒驅動單元14的曲柄軸連桿146，使針棒驅動單元14的上軸142受到針棒驅動源141的帶動而能驅使針棒151進行上下移動，其中，針棒151下端安裝一機針座152，而針棒151於機針座152的一側設有兩彼此並排的機針153，如圖所示，其中一個機針153設為一第一機針153a，而另一個機針153設為一第二機針153b，於此實施例中，第一機針153a穿設於一成形於機針座152的長槽孔152a，其中，第一機針153a的軸心間隔排列於針棒151的軸心，並且，第一機針153a能相對於機針座152進行位移，而第二機針153b固定於機針座152以無法相對於機針座152進行位移，並且，第二機針153b的軸心對齊於針棒151的軸心，另外，內壓腳單元16具有一平行設置於針棒151的內壓腳161，而內壓腳161透過一內壓腳傳動單元162而連接於上軸142，使針棒驅動源141帶動上軸142進行轉動時，內壓腳傳動單元162能帶動內壓腳161進行上下移動。4 and 5, the needle bar unit 15 has a vertically arranged needle bar 151, the needle bar 151 is hollow, and the needle bar 151 is connected to the crank shaft connecting rod 146 of the needle bar driving unit 14, so that The upper shaft 142 of the needle bar driving unit 14 is driven by the needle bar driving source 141 to drive the needle bar 151 to move up and down. The lower end of the needle bar 151 is equipped with a needle base 152, and the needle bar 151 is mounted on the needle base 152. One side is provided with two needles 153 arranged side by side with each other. As shown in the figure, one needle 153 is set as a first needle 153a, and the other needle 153 is set as a second needle 153b. In this embodiment Among them, the first needle 153a penetrates through a long slot 152a formed in the needle base 152, wherein the axis of the first needle 153a is arranged at intervals on the axis of the needle bar 151, and the first needle 153a It can be displaced relative to the needle base 152, and the second needle 153b is fixed to the needle base 152 so as not to be displaced relative to the needle base 152, and the axis of the second needle 153b is aligned with the axis of the needle bar 151 In addition, the inner presser foot unit 16 has an inner presser foot 161 arranged parallel to the needle bar 151, and the inner presser foot 161 is connected to the upper shaft 142 through an inner presser foot drive unit 162, so that the needle bar drive source 141 drives When the upper shaft 142 rotates, the inner presser foot transmission unit 162 can drive the inner presser 161 to move up and down.

請參閱圖3所示，車頭11經由車頭轉動機構20而連接於支柱12，車頭轉動機構20具有一固定於支柱12的車頭齒輪箱21以及一組裝於車頭齒輪箱21的車頭驅動源22，如圖所示，車頭齒輪箱21經由一呈現中空樣態的車頭轉動柱23而連接於車頭11的上面，而車頭驅動源22能經由車頭齒輪箱21而帶動車頭11以針棒151為軸心進行轉動，使車頭11能相對於支柱12進行旋轉，而當車頭11進行旋轉時，針棒151、針距調整機構30與針距驅動機構40皆同步與車頭11進行轉動。Please refer to FIG. 3, the front 11 is connected to the pillar 12 via the front turning mechanism 20. The front turning mechanism 20 has a front gear box 21 fixed to the pillar 12 and a front driving source 22 assembled in the front gear box 21, such as As shown in the figure, the front gear box 21 is connected to the top of the front 11 via a hollow front rotating column 23, and the front driving source 22 can drive the front 11 to take the needle bar 151 as the axis through the front gear box 21. Rotation enables the headstock 11 to rotate relative to the pillar 12, and when the headstock 11 rotates, the needle bar 151, the stitch length adjusting mechanism 30 and the stitch length driving mechanism 40 all rotate in synchronization with the headstock 11.

請參閱圖5A與圖5B所示，針距調整機構30具有一縱向排列的調整桿31以及一連接於調整桿31的調整單元32，調整桿31穿設於針棒單元15的針棒151，並且，調整桿31能相對於針棒151進行轉動，此外，調整單元32設置於針棒單元15的機針座152，使得針距調整機構30位在調整桿31與針棒單元15的兩機針153之間，於此實施例中，調整單元32能將旋轉運動轉換為直線運動，並具有一固定於調整桿31末端的齒輪321以及一嚙合於齒輪321的第一齒條322，其中，齒輪321與第一齒條322兩者都位在機針座152的內部，而齒輪321的外徑大於針棒151的孔徑，另外，第一齒條322相交於針棒單元15的針棒151，並連接於針棒單元15的第一機針153a。Referring to FIGS. 5A and 5B, the stitch length adjusting mechanism 30 has a longitudinally arranged adjusting rod 31 and an adjusting unit 32 connected to the adjusting rod 31. The adjusting rod 31 penetrates through the needle bar 151 of the needle bar unit 15. In addition, the adjusting rod 31 can be rotated relative to the needle bar 151. In addition, the adjusting unit 32 is provided on the needle seat 152 of the needle bar unit 15, so that the needle length adjusting mechanism 30 is located on the two machines of the adjusting rod 31 and the needle bar unit 15. Between the needles 153, in this embodiment, the adjustment unit 32 can convert rotary motion into linear motion, and has a gear 321 fixed to the end of the adjustment rod 31 and a first rack 322 meshed with the gear 321, wherein, Both the gear 321 and the first rack 322 are located inside the needle seat 152, and the outer diameter of the gear 321 is larger than the hole diameter of the needle bar 151. In addition, the first rack 322 intersects the needle bar 151 of the needle bar unit 15. , And connected to the first needle 153a of the needle bar unit 15.

請參閱圖6所示，針距驅動機構40具有一能產生旋轉動力的針距驅動源41以及一連接於針距驅動源41的針距傳動單元42，針距驅動源41固定連接於縫紉機本體10的車頭11，並同時遠離於針棒單元15的針棒151，而針距傳動單元42具有一連接於針距驅動源41的第一針距皮帶輪421以及一套設於針調整桿31的第二針距皮帶輪422，其中，第一針距皮帶輪421經由一第一針距傳動皮帶423而連接於一樞轉連接於車頭11的中繼輪組424，而第二針距皮帶輪422的上方安裝一位在車頭轉動柱23下方的連接座425，並且，第二針距皮帶輪422經由一第二針距傳動皮帶426而連接於中繼輪組424，如圖所示，連接座425與針距調整機構30的調整桿31之間設有一針距同步單元427以讓調整桿31能相對於第二針距皮帶輪422進行上下移動，於此實施例中，針距同步單元427還能讓第二針距皮帶輪422與調整桿31兩者同步進行轉動。Please refer to FIG. 6, the stitch length drive mechanism 40 has a stitch length drive source 41 that can generate rotational power and a stitch length transmission unit 42 connected to the stitch length drive source 41. The stitch length drive source 41 is fixedly connected to the sewing machine body. 10, and at the same time away from the needle bar 151 of the needle bar unit 15, and the needle length transmission unit 42 has a first needle length pulley 421 connected to the needle length drive source 41 and a set of needle adjustment rod 31 The second gauge pulley 422, wherein the first gauge pulley 421 is connected to a relay wheel set 424 pivotally connected to the front 11 via a first gauge transmission belt 423, and the second gauge pulley 422 is above A connecting seat 425 is installed under the head rotating column 23, and the second stitch length pulley 422 is connected to the relay wheel set 424 via a second stitch length transmission belt 426. As shown in the figure, the connecting seat 425 and the needle A stitch length synchronization unit 427 is provided between the adjustment rod 31 of the pitch adjustment mechanism 30 to allow the adjustment rod 31 to move up and down relative to the second stitch length pulley 422. In this embodiment, the stitch length synchronization unit 427 also allows the first The two-gauge pulley 422 and the adjusting rod 31 both rotate synchronously.

如圖所示，針距同步單元427具有一針距同步凹槽427a以及一針距同步凸柱427b，其中，針距同步凹槽427a成形於針距傳動單元42的連接座425，並平行設置於針距調整機構30的調整桿31，而針距同步凸柱427b設為一連接於調整桿31側面的滾輪，其中，針距同步凸柱427b穿設於針距同步凹槽427a，並以線接觸的方式接觸於針距同步凹槽427a的壁面，然而，針距同步凹槽427a成形於連接座425與針距同步凸柱427b成形於調整桿31僅方便說明之用，亦即調整桿31可凹設形成針距同步凹槽427a，而連接座425可安裝設為滾輪的針距同步凸柱427b。As shown in the figure, the stitch length synchronization unit 427 has a stitch length synchronization groove 427a and a stitch length synchronization protrusion 427b, wherein the stitch length synchronization groove 427a is formed on the connecting seat 425 of the stitch length transmission unit 42 and is arranged in parallel In the adjusting rod 31 of the stitch length adjusting mechanism 30, the stitch length synchronization protrusion 427b is set as a roller connected to the side of the adjusting rod 31, wherein the needle distance synchronization protrusion 427b penetrates the needle distance synchronization groove 427a, and The line contact method is in contact with the wall surface of the pitch synchronization groove 427a. However, the pitch synchronization groove 427a is formed on the connecting seat 425 and the pitch synchronization protrusion 427b is formed on the adjusting rod 31 for convenience of illustration only, that is, the adjusting rod 31 can be recessed to form a pitch synchronization groove 427a, and the connecting seat 425 can be installed with a needle pitch synchronization protrusion 427b as a roller.

請參閱圖7所示，當可變針距縫紉機1要進行車縫作業時，針棒驅動單元14的針棒驅動源141帶動針棒驅動單元14的上軸142進行轉動，而進行轉動的上軸142能經由針棒驅動單元14的曲柄軸連桿146而帶動針棒單元15的針棒151進行上下移動同時，針棒單元15的機針座152限制調整單元32的齒輪321上下位移，藉此，當針棒151進行上下移動時，調整桿31會同步與針棒151進行上下移動，然而，當調整桿31進行上下移動時，由於針距驅動機構40的連接座425與調整桿31之間設有針距驅動機構40的針距同步單元427，使調整桿31能相對於針距傳動單元42的第二針距皮帶輪422進行上下移動，同時，針棒151經由針棒單元15的機針座152與針距調整機構30的調整單元32而帶動針棒單元15的兩機針153進行上下移動，此外，在調整桿31進行移動的過程中，針距同步單元427的針距同步凸柱427b會在針距同步單元427的針距同步凹槽427a內來回上下移動，進而針距同步凸柱427b可隨時改變與針距同步凹槽427a之間的相對位置。Please refer to Figure 7, when the variable stitch sewing machine 1 is about to perform sewing operations, the needle bar drive source 141 of the needle bar drive unit 14 drives the upper shaft 142 of the needle bar drive unit 14 to rotate, and the upper shaft 142 of the needle bar drive unit 14 is rotated, and the upper shaft 142 of the needle bar drive unit 14 is rotated to perform the upper rotation The shaft 142 can drive the needle bar 151 of the needle bar unit 15 to move up and down via the crank shaft connecting rod 146 of the needle bar drive unit 14. At the same time, the needle seat 152 of the needle bar unit 15 restricts the up and down displacement of the gear 321 of the adjustment unit 32. Therefore, when the needle bar 151 moves up and down, the adjusting rod 31 will move up and down synchronously with the needle bar 151. However, when the adjusting rod 31 moves up and down, due to the difference between the connecting seat 425 of the stitch length driving mechanism 40 and the adjusting rod 31 There is a stitch length synchronization unit 427 with a stitch length drive mechanism 40 between them, so that the adjustment rod 31 can move up and down relative to the second stitch length pulley 422 of the stitch length transmission unit 42. At the same time, the needle bar 151 passes through the needle bar unit 15 The needle seat 152 and the adjustment unit 32 of the needle length adjustment mechanism 30 drive the two needles 153 of the needle bar unit 15 to move up and down. In addition, during the movement of the adjustment lever 31, the needle length synchronization unit 427 of the needle length synchronization unit 427 is moved up and down. The post 427b moves up and down in the pitch synchronization groove 427a of the pitch synchronization unit 427, and the pitch synchronization protrusion 427b can change the relative position with the pitch synchronization groove 427a at any time.

請參閱圖8A與圖8B所示，當可變針距縫紉機1要調整兩機針153之間的距離時，針距驅動機構40的針距驅動源41帶動針距傳動單元42的第一針距皮帶輪421進行旋轉，使第一針距皮帶輪421透過第一針距傳動皮帶423、中繼輪組424與第二針距傳動皮帶426而將旋轉動力傳遞至第二針距皮帶輪422，進而使第二針距皮帶輪422進行轉動，此時，因為針距同步單元427的針距同步凸柱427b穿設於針距同步單元427的針距同步凹槽427a內部，使第二針距皮帶輪422能經由針距同步單元427而帶動針距調整機構30的調整桿31相對於針棒151進行逆時針轉動，進而使針距調整機構30的齒輪321以針棒151為軸心同時進行逆時針轉動，導致針距調整機構30的第一齒條322會沿著一平行於上軸142的第一方向F1進行橫向直線移動，致使針棒單元15的第一機針153a會遠離於針棒單元15的第二機針153b以增加第一機針153a與第二機針153b兩者之間的距離，請參閱圖8C與圖8D所示，反之，當針距驅動源41帶動調整桿31進行順時針轉動時，齒輪321以針棒151為軸心進行順時針轉動以帶動第一齒條322沿著一相反於第一方向F1的第二方向F2進行橫向直線移動，使第一機針153a靠近於第二機針153b以縮短第一機針153a與第二機針153b兩者之間的距離，藉此，針棒151受到上軸142的帶動而進行上下移動的過程中，針距驅動源41能隨時帶動調整桿31進行轉動，於較佳實施例中，當針棒151同時進行移動與轉動時，車頭轉動機構20可同時帶動縫紉機本體10的車頭11進行轉動。Please refer to Figures 8A and 8B, when the variable stitch length sewing machine 1 is to adjust the distance between the two needles 153, the stitch length drive source 41 of the stitch length drive mechanism 40 drives the first stitch of the stitch length transmission unit 42 The pitch pulley 421 rotates, so that the first pitch pulley 421 transmits the rotation power to the second pitch pulley 422 through the first pitch transmission belt 423, the relay pulley set 424, and the second pitch transmission belt 426, thereby making The second stitch length pulley 422 rotates. At this time, because the stitch length synchronization protrusion 427b of the stitch length synchronization unit 427 penetrates the stitch length synchronization groove 427a of the stitch length synchronization unit 427, the second stitch length pulley 422 can The adjusting rod 31 of the needle distance adjusting mechanism 30 is driven to rotate counterclockwise with respect to the needle bar 151 via the needle distance synchronization unit 427, so that the gear 321 of the needle distance adjusting mechanism 30 rotates counterclockwise with the needle bar 151 as the axis at the same time. As a result, the first rack 322 of the needle pitch adjusting mechanism 30 will move horizontally and linearly along a first direction F1 parallel to the upper shaft 142, so that the first needle 153a of the needle bar unit 15 will be far away from the needle bar unit 15 The second needle 153b increases the distance between the first needle 153a and the second needle 153b. Please refer to Figures 8C and 8D. On the contrary, when the needle distance driving source 41 drives the adjusting rod 31 to move clockwise When rotating, the gear 321 rotates clockwise with the needle bar 151 as the axis to drive the first rack 322 to move horizontally and linearly along a second direction F2 opposite to the first direction F1, so that the first needle 153a is close to The second needle 153b shortens the distance between the first needle 153a and the second needle 153b, whereby the needle bar 151 is driven by the upper shaft 142 to move up and down, and the needle distance from the driving source 41 The adjusting rod 31 can be driven to rotate at any time. In a preferred embodiment, when the needle bar 151 moves and rotates at the same time, the head rotating mechanism 20 can simultaneously drive the head 11 of the sewing machine body 10 to rotate.

再請參閱圖2所示，縫紉機本體10的支柱12連接於縫紉機本體10的座體13，而座體13於遠離支柱12的一端設有一活動座17，而活動座17的內部設有兩個釜台18，並進一步連接一釜台驅動機構50、一旋梭驅動機構60以及一孔距驅動機構70，請參閱圖9與圖10所示，其中一個釜台18設為一活動組裝於活動座17的第一釜台181，另一個釜台18設為一固定於活動座17的第二釜台182，其中，第一釜台181具有一活動連接於活動作的第一連接架181a以及一組裝於第一連接架181a的第一針板181b，第一連接架181a樞轉連接一垂直設置的第一釜軸181c，而第一釜軸181c的上端連接一位在第一連接架181a與第一針板181b之間的第一旋梭181d，並於第一釜軸181c的另一端連接一能帶動運轉的第一傘齒輪組181e，另外，第一針板181b位在第一連接架181a的上方，並外露於活動座17，而第一針板181b設有一對位於第一機針153a的第一針孔181b1，於此實施例中，第二釜台182具有一第二連接架182a、一第二針板182b、一第二釜軸182c、一第二旋梭182d以及一第二傘齒輪組182e，並且，第二釜台182的結構態樣相同於第一釜台181，使第二連接架182a、第二針板182b、第二釜軸182c、第二旋梭182d以及第二傘齒輪組182e五者之間的連接關係相同於第一釜台181，其中，第二針板182b如同第一針板181b外露於活動座17，並設有一對位於第二機針153b的第二針孔182b1。Please refer to Figure 2 again, the pillar 12 of the sewing machine body 10 is connected to the base 13 of the sewing machine body 10, and the base 13 is provided with a movable seat 17 at an end away from the pillar 12, and the inside of the movable seat 17 is provided with two The kettle table 18 is further connected with a kettle table drive mechanism 50, a rotary shuttle drive mechanism 60, and a hole pitch drive mechanism 70. Please refer to Figures 9 and 10. One of the kettle tables 18 is set as a movable assembly mounted on the movable seat 17. The first kettle table 181 and the other kettle table 18 are set as a second kettle table 182 fixed to the movable seat 17, wherein the first kettle table 181 has a first connecting frame 181a movably connected to the movable work and a first connecting frame assembled to the first connecting frame The first needle plate 181b of 181a, the first connecting frame 181a is pivotally connected to a vertical first kettle shaft 181c, and the upper end of the first kettle shaft 181c is connected to a position between the first connecting frame 181a and the first needle plate 181b. The first rotary hook 181d in the middle is connected to the other end of the first kettle shaft 181c with a first bevel gear set 181e capable of driving operation. In addition, the first needle plate 181b is located above the first connecting frame 181a and is exposed In the movable seat 17, the first needle plate 181b is provided with a pair of first needle holes 181b1 located in the first needle 153a. In this embodiment, the second kettle table 182 has a second connecting frame 182a and a second needle plate 182b, a second kettle shaft 182c, a second rotary hook 182d, and a second bevel gear set 182e, and the structure of the second kettle base 182 is the same as the first kettle base 181, so that the second connecting frame 182a and the second bevel gear set 182e The connection relationship among the needle plate 182b, the second kettle shaft 182c, the second rotary hook 182d, and the second bevel gear set 182e is the same as that of the first kettle table 181, wherein the second needle plate 182b is exposed like the first needle plate 181b The movable seat 17 is provided with a pair of second needle holes 182b1 at the second needle 153b.

請參閱圖9所示，座體13的活動座17經由釜台驅動機構50而連接於座體13，其中，釜台驅動機構50具有一固定於釜台18的底座齒輪箱51以及一組裝於底座齒輪箱51的釜台驅動源52，如圖所示，底座齒輪箱51的上方設有一釜台轉動柱53來連接於活動座17，而釜台驅動源52能經由底座齒輪箱51而帶動活動座17以釜台轉動柱53為軸心進行轉動，使活動座17能相對於座體13進行旋轉，而當活動座17進行旋轉時，旋梭驅動機構60與孔距驅動機構70兩者同步與車頭11進行轉動，於此實施例中，當縫紉機本體10的車頭11進行轉動時，釜台驅動機構50會同時帶動活動座17進行同步轉動。Please refer to Figure 9, the movable seat 17 of the seat body 13 is connected to the seat body 13 via the kettle table drive mechanism 50, wherein the kettle table drive mechanism 50 has a base gear box 51 fixed to the kettle table 18 and a gear box assembled on the base The kettle table driving source 52 of 51, as shown in the figure, is provided with a kettle table rotating column 53 above the base gear box 51 to connect to the movable seat 17, and the kettle table driving source 52 can drive the movable seat 17 to rotate through the base gear box 51. The column 53 rotates as an axis, so that the movable seat 17 can rotate relative to the seat body 13, and when the movable seat 17 rotates, the hook driving mechanism 60 and the hole pitch driving mechanism 70 both rotate in synchronization with the front 11, In this embodiment, when the head 11 of the sewing machine body 10 rotates, the retort table driving mechanism 50 will simultaneously drive the movable seat 17 to rotate synchronously.

請參閱圖11所示，旋梭驅動機構60具有一能產生旋轉動力的旋梭驅動源61以及一組裝於旋梭驅動源61的旋梭傳動單元62，旋梭驅動源61固定於活動座17上，而旋梭傳動單元62具有一連接於旋梭驅動源61的第一旋梭皮帶輪621以及一樞轉連接於活動座17的第二旋梭皮帶輪622，其中，第一旋梭皮帶輪621與第二旋梭皮帶輪622兩者共同組裝一旋梭傳動皮帶623，而第二旋梭皮帶輪622組裝一水平設置的旋梭轉動軸624，且旋梭轉動軸624貫穿於一形成於第一傘齒輪組181e的第一穿設孔181e1以及一形成於第二傘齒輪組182e的第二穿設孔182e1。Please refer to FIG. 11, the rotary hook driving mechanism 60 has a rotary hook driving source 61 capable of generating rotational power and a rotary hook transmission unit 62 assembled on the rotary hook driving source 61. The rotary hook driving source 61 is fixed to the movable seat 17 The rotary hook transmission unit 62 has a first rotary hook pulley 621 connected to the rotary hook driving source 61 and a second rotary hook pulley 622 pivotally connected to the movable seat 17, wherein the first rotary hook pulley 621 and The second rotary hook pulley 622 is assembled with a rotary hook transmission belt 623, and the second rotary hook pulley 622 is assembled with a horizontally arranged rotary hook rotating shaft 624, and the rotary hook rotating shaft 624 penetrates a first bevel gear formed A first penetration hole 181e1 of the group 181e and a second penetration hole 182e1 formed in the second bevel gear group 182e.

請參閱圖12所示，旋梭驅動機構60的旋梭轉動軸624與第一釜台181的第一傘齒輪組181e之間設有一第一旋梭同步單元625以讓第一釜台181能相對於旋梭轉動軸624的軸向進行移動，於此實施例中，第一旋梭同步單元625還能讓旋梭轉動軸624與第一釜台181的第一旋梭181d兩者同步進行轉動，如圖所示，第一旋梭同步單元625具有一第一花件套筒625a以及一第一花件軸625b，第一花件套筒625a成形於第一傘齒輪組181e的第一穿設孔181e1，而第一花件軸625b形成於旋梭轉動軸624的外周圍。Please refer to FIG. 12, a first rotary hook synchronization unit 625 is provided between the rotary hook rotating shaft 624 of the rotary hook driving mechanism 60 and the first bevel gear set 181e of the first kettle table 181 so that the first kettle table 181 can be relatively The rotary hook rotating shaft 624 moves in the axial direction. In this embodiment, the first rotary hook synchronizing unit 625 can also enable the rotary hook rotary shaft 624 to rotate synchronously with the first rotary hook 181d of the first kettle table 181, such as As shown in the figure, the first rotary hook synchronization unit 625 has a first flower piece sleeve 625a and a first flower piece shaft 625b, and the first flower piece sleeve 625a is formed in the first through hole of the first bevel gear set 181e 181e1, and the first flower piece shaft 625b is formed on the outer periphery of the rotary hook rotating shaft 624.

請參閱圖13所示，孔距驅動機構70具有一能產生旋轉動力的孔距驅動源71以及一連接於孔距驅動源71的孔距傳動單元72，孔距驅動源71遠離於旋梭驅動機構60的旋梭驅動源61，並連接於活動座17，使孔距驅動源71與旋梭驅動源61分別位在活動座17的相對兩側，孔距傳動單元72具有一連接於孔距驅動源71的第一孔距皮帶輪721以及一樞轉連接於活動座17的第二孔距皮帶輪722，其中，第一孔距皮帶輪721經由一孔距傳動皮帶723而連接於第二孔距皮帶輪722，而第二孔距皮帶輪722連接一水平設置的第一傳動桿724，第一傳動桿724桿平行於旋梭驅動機構60的旋梭轉動軸624，並穿設於一連接於第一釜台181的第一移動塊725，如圖15B所示，第一傳動桿724與第一移動塊725之間設有一能將旋轉運動轉換為直線運動的第一螺桿單元726，於此實施例中，第一螺桿單元726具有一成形於第一傳動桿724的第一外螺紋726a以及一螺旋嵌合於第一外螺紋726a的第一內螺紋726b，而第一內螺紋726b設在一成形於第一移動塊725的第一內孔725a。Please refer to FIG. 13, the pitch drive mechanism 70 has a pitch drive source 71 that can generate rotational power and a pitch transmission unit 72 connected to the pitch drive source 71. The pitch drive source 71 is far away from the hook drive The rotary hook driving source 61 of the mechanism 60 is connected to the movable seat 17, so that the hole pitch driving source 71 and the rotary hook driving source 61 are respectively located on opposite sides of the movable seat 17, and the hole pitch transmission unit 72 has a connecting hole pitch The first pitch pulley 721 of the driving source 71 and a second pitch pulley 722 pivotally connected to the movable seat 17, wherein the first pitch pulley 721 is connected to the second pitch pulley through a pitch transmission belt 723 722, and the second pitch pulley 722 is connected to a horizontally arranged first transmission rod 724. The first transmission rod 724 is parallel to the hook rotation shaft 624 of the hook drive mechanism 60, and passes through a connection connected to the first kettle table. The first moving block 725 of 181, as shown in FIG. 15B, a first screw unit 726 capable of converting rotary motion into linear motion is provided between the first transmission rod 724 and the first moving block 725. In this embodiment, The first screw unit 726 has a first external thread 726a formed on the first transmission rod 724 and a first internal thread 726b screw-fitted to the first external thread 726a, and the first internal thread 726b is formed in a A first inner hole 725a of a moving block 725.

請參閱圖14所示，當針棒單元15的針棒151進行上下移動時，旋梭驅動機構60的旋梭驅動源61同步進行旋轉，使旋梭驅動源61帶動旋梭傳動單元62的第一旋梭皮帶輪621進行轉動，進而第一旋梭皮帶輪621透過旋梭傳動皮帶623而將旋轉動力傳遞至第二旋梭皮帶輪622，此時，因為第一旋梭同步單元625的第一花件軸625b穿設於第一旋梭同步單元625的第一花件套筒625a內部，使旋梭轉動軸624能經由第一釜台181的第一傘齒輪組181e而帶動第一旋梭181d以第一釜軸181c為軸心進行轉動，而當第一旋梭181d進行轉動時，旋梭轉動軸624同時經由第二釜台182的第二傘齒輪組182e而帶動第二旋梭182d以第二釜軸182c為軸心進行同方向轉動。Please refer to FIG. 14, when the needle bar 151 of the needle bar unit 15 moves up and down, the hook drive source 61 of the hook drive mechanism 60 rotates synchronously, so that the hook drive source 61 drives the second hook of the hook drive unit 62 A rotary hook pulley 621 rotates, and the first rotary hook pulley 621 transmits the rotational power to the second rotary hook pulley 622 through the rotary hook transmission belt 623. At this time, because the first rotary hook synchronizing unit 625 has the first flower piece The shaft 625b is inserted inside the first flower sleeve 625a of the first rotary hook synchronization unit 625, so that the rotary hook rotating shaft 624 can drive the first rotary hook 181d through the first bevel gear set 181e of the first kettle table 181 A kettle shaft 181c rotates as the axis, and when the first rotary hook 181d rotates, the rotary hook rotating shaft 624 simultaneously drives the second rotary hook 182d to the second rotary hook 182d via the second bevel gear set 182e of the second kettle table 182 The shaft 182c rotates in the same direction as the shaft center.

請參閱圖15A、圖15B與圖15C所示，當可變針距縫紉機1要調整第一針孔181b1與第二針孔182b1兩者之間的距離時，孔距驅動機構70的孔距驅動源71會同時帶動孔距傳動單元72的第一孔距孔距傳動單元72皮帶輪進行逆時針轉動，而第一孔距皮帶輪721經由孔距傳動皮帶723而將逆時針轉動動力傳遞至第二孔距皮帶輪722，使孔距傳動單元72的第一傳動桿724以第一傳動桿724孔距轉動桿的軸心沿著一第一轉動方向F3進行轉動，使孔距傳動單元72的第一移動塊725透過第一螺桿單元726而沿著第一方向F1進行移動，使第一釜台181遠離於第二釜台182以增加第一針孔181b1與第二針孔182b1兩者之間的距離，進而使兩機針153之間的距離能夠相同於第一針孔181b1與第二針孔182b1兩者之間的距離，反之，請參閱圖15D、圖15E與15F所示，當孔距驅動源71經由孔距傳動單元72而帶動第一傳動桿724沿著一相反於第一轉動方向F3的第二轉動方向F4進行轉動時，第一移動塊725透過第一螺桿單元726而沿著第二方向F2進行移動，使第一釜台181靠近於第二釜台182以縮短第一針孔181b1與第二針孔182b1兩者之間的距離。Please refer to Figures 15A, 15B and 15C, when the variable stitch length sewing machine 1 is to adjust the distance between the first needle hole 181b1 and the second needle hole 182b1, the hole pitch of the hole pitch driving mechanism 70 is driven The source 71 will simultaneously drive the first hole pitch transmission unit 72 of the pitch transmission unit 72 to rotate counterclockwise, and the first pitch pulley 721 transmits counterclockwise rotation power to the second hole through the pitch transmission belt 723 The distance pulley 722 makes the first transmission rod 724 of the hole distance transmission unit 72 rotate along a first rotation direction F3 with the shaft center of the first transmission rod 724 hole distance rotation rod, so that the first movement of the hole distance transmission unit 72 The block 725 moves along the first direction F1 through the first screw unit 726 to move the first retort table 181 away from the second retort table 182 to increase the distance between the first pinhole 181b1 and the second pinhole 182b1. The distance between the two needles 153 can be the same as the distance between the first needle hole 181b1 and the second needle hole 182b1. On the contrary, please refer to FIGS. 15D, 15E and 15F. When the hole is away from the driving source 71 When the first transmission rod 724 is driven to rotate in a second rotation direction F4 opposite to the first rotation direction F3 through the pitch transmission unit 72, the first moving block 725 passes through the first screw unit 726 and moves along the second direction. F2 moves so that the first kettle table 181 is close to the second kettle table 182 to shorten the distance between the first pinhole 181b1 and the second pinhole 182b1.

於此實施例中，當旋梭驅動機構60帶動第一釜台181的第一旋梭181d與第二釜台182的第二旋梭182d進行轉動時，孔距驅動機構70透過第一旋梭同步單元625而能同時帶動第一釜台181進行移動以改變第一針孔181b1與第二針孔182b1之間的距離，藉此，當第一旋梭181d同時進行移動與轉動時，釜台驅動機構50可同時帶動縫紉機本體10的活動座17進行轉動。In this embodiment, when the rotary hook drive mechanism 60 drives the first rotary hook 181d of the first kettle table 181 and the second rotary hook 182d of the second kettle table 182 to rotate, the pitch drive mechanism 70 passes through the first rotary hook synchronization unit 625 and can simultaneously drive the first kettle table 181 to move to change the distance between the first needle hole 181b1 and the second needle hole 182b1, so that when the first rotary hook 181d moves and rotates at the same time, the kettle table driving mechanism 50 can At the same time, the movable seat 17 of the sewing machine body 10 is driven to rotate.

於第二較佳實施例中，與第一較佳實施例的差別在於縫紉機本體10的針棒單元15、座體13的第二釜台182、針距調整機構30、旋梭驅動機構60以及孔距驅動機構70，而其他機構的結構態樣都相同於第一較佳實施例，進而於此實施例中將不再重複描述，請參閱圖16所示，針棒單元15的第二機針153b如同第一機針153a穿設於機針座152的長槽孔152a，而針距調整機構30額外具有一第二齒條323，使得針距調整機構30由齒輪321、第一齒條322與第二齒條323所構成，如圖所示，第二齒條323嚙合於齒輪321，並連接於第二機針153b，其中，第一、二齒條322、323兩者分別位在齒輪321的相對兩側，於此實施例中，第一、二機針153a、153b兩者對稱設置於針棒151的軸心。In the second preferred embodiment, the difference from the first preferred embodiment lies in the needle bar unit 15 of the sewing machine body 10, the second base 182 of the seat body 13, the needle length adjustment mechanism 30, the hook driving mechanism 60, and the hole The distance driving mechanism 70, and the structure of other mechanisms are the same as the first preferred embodiment, and the description will not be repeated in this embodiment. Please refer to FIG. 16, the second needle bar unit 15 153b is the same as the first needle 153a passing through the long slot 152a of the needle base 152, and the needle pitch adjusting mechanism 30 additionally has a second rack 323, so that the needle pitch adjusting mechanism 30 consists of a gear 321 and a first rack 322 As shown in the figure, the second rack 323 meshes with the gear 321 and is connected to the second needle 153b. The first and second racks 322 and 323 are respectively located in the gears. On opposite sides of the 321, in this embodiment, the first and second needles 153a and 153b are symmetrically arranged on the axis of the needle bar 151.

請參閱圖17A所示，當可變針距縫紉機1要調整兩機針153之間的距離時，針距驅動機構40的針距驅動源41經由針距傳動單元42而帶動針距調整機構30的調整桿31進行逆時針轉動，進而使針距調整機構30的齒輪321以針棒151為軸心同時進行逆時針轉動，導致針距調整機構30的第一齒條322會沿著第一方向F1進行橫向直線移動，同時，針距調整機構30的第二齒條323會沿著第二方向F2進行橫向直線移動，使得第一機針153a與第二機針153b兩者同時進行沿著相反方向進行移動以增加第一機針153a與第二機針153b兩者之間的距離，反之，請參圖17B所示，當針距驅動源41帶動針棒151進行順時針轉動時，齒輪321帶動第一齒條322沿著第二方向F2進行橫向直線移動，同時齒輪321也會帶動第二齒條323沿著第一方向F1進行橫向直線移動，使第一機針153a與第二機針153b兩者彼此靠近以縮短第一機針153a與第二機針153b兩者之間的距離。Please refer to FIG. 17A. When the variable stitch length sewing machine 1 is to adjust the distance between the two needles 153, the stitch length driving source 41 of the stitch length driving mechanism 40 drives the stitch length adjusting mechanism 30 via the stitch length transmission unit 42 The adjusting rod 31 rotates counterclockwise, so that the gear 321 of the needle pitch adjusting mechanism 30 rotates counterclockwise with the needle bar 151 as the axis at the same time, resulting in the first rack 322 of the needle pitch adjusting mechanism 30 along the first direction F1 moves horizontally and linearly, and at the same time, the second rack 323 of the stitch length adjusting mechanism 30 moves horizontally and linearly along the second direction F2, so that the first needle 153a and the second needle 153b both move in opposite directions at the same time. Move in the direction to increase the distance between the first needle 153a and the second needle 153b. On the contrary, please refer to FIG. 17B. When the needle bar 151 is driven by the needle distance driving source 41 to rotate clockwise, the gear 321 The first rack 322 is driven to move horizontally and linearly along the second direction F2, and the gear 321 will also drive the second rack 323 to move horizontally and linearly along the first direction F1, so that the first needle 153a and the second needle The two 153b are close to each other to shorten the distance between the first needle 153a and the second needle 153b.

請參閱圖18所示，而旋梭驅動機構60於旋梭轉動軸624與第二釜台182的第二傘齒輪321之間設有一功能相同於第一旋梭同步單元625的第二旋梭同步單元626以讓第二釜台182能相對於旋梭轉動軸624進行移動，進而座體13的第二座體13能相對於活動座17進行移動，於此實施例中，因為第一旋梭同步單元625與第二旋梭同步單元626兩者的功能相同，使第二旋梭同步單元626也能讓旋梭轉動軸624與第二座體13的第二旋梭182d兩者同步進行轉動，如圖所示，第二旋梭同步單元626具有一第二花件套筒626a以及一第二花件軸626b，第二花件套筒626a成形於第二傘齒輪組182e的第二穿設孔182e1，而第二花件軸626b形成於旋梭轉動軸624的外周圍。Please refer to FIG. 18, and the rotary hook drive mechanism 60 is provided with a second rotary hook synchronization between the rotary hook rotation shaft 624 and the second bevel gear 321 of the second kettle table 182, which has the same function as the first rotary hook synchronization unit 625. The unit 626 allows the second kettle table 182 to move relative to the rotating shaft 624 of the rotary hook, so that the second base 13 of the base 13 can move relative to the movable seat 17. In this embodiment, because the first rotary hook is synchronized The function of the unit 625 and the second rotary hook synchronization unit 626 are the same, so that the second rotary hook synchronization unit 626 can also enable the rotary hook rotating shaft 624 and the second rotary hook 182d of the second seat 13 to rotate synchronously. As shown in the figure, the second rotary hook synchronization unit 626 has a second flower piece sleeve 626a and a second flower piece shaft 626b, and the second flower piece sleeve 626a is formed in the second passage of the second bevel gear set 182e. A hole 182e1, and a second flower piece shaft 626b is formed on the outer periphery of the rotary hook rotating shaft 624.

請參閱圖19所示，孔距驅動機構70的第一傳動桿724組裝一能改變轉動方向的轉換單元727，轉換單元727具有一組裝於第一傳動桿724的第一轉換齒輪727a以及一嚙合於第一轉換齒輪727a的第二轉換齒輪727b，而第二轉換齒輪727b組裝一平行於第一傳動桿724的第二傳動桿728，其中，第二傳動桿728穿設於一連接於第二釜台182的第二移動塊729，如圖20B所示，第二傳動桿728與第二移動塊729之間設有一功能相同於第一螺桿單元726的第二螺桿單元730能以將旋轉運動轉換為直線運動，第二螺桿單元730具有一成形於第二傳動桿728的第二外螺紋730a以及一螺旋嵌合於第二外螺紋730a的第二內螺紋730b，而第二內螺紋730b設在一成形於第二移動塊729的第二內孔729a。Please refer to FIG. 19, the first transmission rod 724 of the pitch drive mechanism 70 is assembled with a conversion unit 727 that can change the direction of rotation. The conversion unit 727 has a first conversion gear 727a assembled on the first transmission rod 724 and a meshing The second conversion gear 727b of the first conversion gear 727a and the second conversion gear 727b are assembled with a second transmission rod 728 parallel to the first transmission rod 724, wherein the second transmission rod 728 penetrates through a second transmission rod 728 connected to the second transmission rod 724. The second moving block 729 of the kettle table 182, as shown in FIG. 20B, a second screw unit 730 with the same function as the first screw unit 726 is provided between the second transmission rod 728 and the second moving block 729 to convert the rotational movement For linear motion, the second screw unit 730 has a second external thread 730a formed on the second transmission rod 728 and a second internal thread 730b screwed into the second external thread 730a, and the second internal thread 730b is provided on the A second inner hole 729a formed in the second moving block 729.

請參閱圖20A、圖20B與圖20C所示，當可變針距縫紉機1要調整第一針孔181b1與第二針孔182b1兩者之間的距離時，孔距驅動機構70的孔距驅動源71會帶動孔距傳動單元72的第一傳動桿724沿著第一轉動方向F3進行轉動，同時，孔距傳動單元72的第二傳動桿728透過轉換單元727而沿著第二轉動方向F4進行轉動，使得第一傳動桿724與第二傳動桿728兩者分別沿著反方向進行轉動，藉此，孔距傳動單元72的第一移動塊725透過第一螺桿單元726而沿著第一方向F1進行移動，使第一釜台181帶動第一針板181b沿著第一方向F1進行移動，而孔距傳動單元72的第二移動塊729透過第二螺桿單元730而同時沿著第二方向F2進行移動，使第二釜台182帶動第二針板182b沿著第二方向F2進行移動，進而增加第一針孔181b1與第二針孔182b1兩者之間的距離，反之，請參閱圖20D、圖20E與圖20F所示，當孔距驅動源71會帶動第一傳動桿724沿著第二轉動方向F4進行轉動，同時第二傳動桿728透過轉換單元727而同時沿著第一轉動方向F3進行轉動，使得第一移動塊725帶動第一釜台181沿著第二方向F2進行移動，而第二移動塊729則帶動第二釜台182沿著第一方向F1進行移動以縮短第一針孔181b1與第二針孔182b1兩者之間的距離。Please refer to Figure 20A, Figure 20B and Figure 20C, when the variable stitch length sewing machine 1 is to adjust the distance between the first needle hole 181b1 and the second needle hole 182b1, the hole pitch driving mechanism 70 The source 71 drives the first transmission rod 724 of the pitch transmission unit 72 to rotate along the first rotation direction F3, and at the same time, the second transmission rod 728 of the pitch transmission unit 72 moves along the second rotation direction F4 through the conversion unit 727. Rotate so that the first transmission rod 724 and the second transmission rod 728 respectively rotate in opposite directions, whereby the first moving block 725 of the pitch transmission unit 72 passes through the first screw unit 726 and moves along the first Move in the direction F1, so that the first autoclave table 181 drives the first needle plate 181b to move in the first direction F1, and the second moving block 729 of the pitch transmission unit 72 passes through the second screw unit 730 and simultaneously moves in the second direction. F2 moves, so that the second autoclave 182 drives the second needle plate 182b to move along the second direction F2, thereby increasing the distance between the first pinhole 181b1 and the second pinhole 182b1, otherwise, see Figure 20D 20E and 20F, when the hole distance driving source 71 will drive the first transmission rod 724 to rotate along the second rotation direction F4, while the second transmission rod 728 through the conversion unit 727 and simultaneously along the first rotation direction F3 rotates, so that the first moving block 725 drives the first autoclave table 181 to move in the second direction F2, and the second moving block 729 drives the second autoclave table 182 to move in the first direction F1 to shorten the first pinhole The distance between 181b1 and the second pinhole 182b1.

請參閱圖21所示，於第三較佳實施例中，與第一較佳實施例的差別在於針距驅動機構40的結構樣態，而其他機構的結構樣態相同於第一較佳實施例，於此實施例中，針距驅動機構40僅由可軸向滑動的針距同步單元427連接於針距驅動源41所構成，而針距驅動源41直接安裝於調整桿31的軸心上方以帶動調整桿31進行轉動，藉此，當針棒驅動單元14的針棒驅動源141帶動針棒151進行上下移動時，針距驅動源41可同時帶動調整桿31進行轉動。Please refer to FIG. 21. In the third preferred embodiment, the difference from the first preferred embodiment is the structure of the stitch length driving mechanism 40, and the structure of other mechanisms is the same as that of the first preferred embodiment. For example, in this embodiment, the stitch length drive mechanism 40 is only composed of an axially slidable stitch length synchronization unit 427 connected to the stitch length drive source 41, and the stitch length drive source 41 is directly mounted on the shaft center of the adjusting rod 31 The upper side drives the adjusting rod 31 to rotate, whereby when the needle bar driving source 141 of the needle bar driving unit 14 drives the needle bar 151 to move up and down, the needle pitch driving source 41 can simultaneously drive the adjusting rod 31 to rotate.

以上所舉實施例，僅用為方便說明本創作並非加以限制，在不離作之各種簡易變形與修飾，均仍應含括於以下申請專利範圍中。The above-mentioned embodiments are only used to facilitate the description of this creation and not to limit it. Various simple modifications and modifications made without separation should still be included in the scope of the following patent applications.

1:可變針距縫紉機 10:縫紉機本體 11:車頭 12:支柱 13:座體 14:針棒驅動單元 141:針棒驅動源 142:上軸 143:第一針棒皮帶輪 144:針棒傳動皮帶 145:第二針棒皮帶輪 146:曲柄軸連桿 15:針棒單元 151:針棒 152:機針座 152a:長槽孔 153:機針 153a:第一機針 153b:第二機針 16:內壓腳單元 161:內壓腳 162:內壓腳傳動單元 17:活動座 18:釜台 181:第一釜台 181a:第一連接架 181b:第一針板 181b1:第一針孔 181c:第一釜軸 181d:第一旋梭 181e:第一傘齒輪組 181e1:第一穿設孔 182:第二釜台 182a:第二連接架 182b:第二針板 182b1:第二針孔 182c:第二釜軸 182d:第二旋梭 182e:第二傘齒輪組 182e1:第二穿設孔 20:車頭轉動機構 21:車頭齒輪箱 22:車頭驅動源 23:車頭轉動柱 30:針距調整機構 31:調整桿 32:調整單元 321:齒輪 322:第一齒條 323:第二齒條 40:針距驅動機構 41:針距驅動源 42:針距傳動單元 421:第一針距皮帶輪 422:第二針距皮帶輪 423:第一針距傳動皮帶 424:中繼輪組 425:連接座 426:第二針距傳動皮帶 427:針距同步單元 427a:針距同步凹槽 427b:針距同步凸柱 50:釜台驅動機構 51:底座齒輪箱 52:釜台驅動源 53:釜台轉動柱 60:旋梭驅動機構 61:旋梭驅動源 62:旋梭傳動單元 621:第一旋梭皮帶輪 622:第二旋梭皮帶輪 623:旋梭傳動皮帶 624:旋梭轉動軸 625:第一旋梭同步單元 625a:第一花件套筒 625b:第一花件軸 626:第二旋梭同步單元 626a:第二花件套筒 626b:第二花件軸 70:孔距驅動機構 71:孔距驅動源 72:孔距傳動單元 721:第一孔距皮帶輪 722:第二孔距皮帶輪 723:孔距傳動皮帶 724:第一傳動桿 725:第一移動塊 725a:第一內孔 726:第一螺桿單元 726a:第一外螺紋 726b:第一內螺紋 727:轉換單元 727a:第一轉換齒輪 727b:第二轉換齒輪 728:第二傳動桿 729:第二移動塊 729a:第二內孔 730:第二螺桿單元 730a:第二外螺紋 730b:第二內螺紋 F1:第一方向 F2:第二方向 F3:第一轉動方向 F4:第二轉動方向 80:雙針旋轉頭花樣縫紉機 81:頭部旋轉單元 82:底座旋轉單元 83:X-Y軸送料單元 84:針棒 85:針夾 86:機針 87:針板 871:針孔1: Variable stitch sewing machine 10: Sewing machine body 11: front 12: Pillar 13: Seat 14: Needle bar drive unit 141: Needle bar drive source 142: Upper shaft 143: The first needle bar pulley 144: Needle bar drive belt 145: The second needle bar pulley 146: crankshaft connecting rod 15: Needle bar unit 151: Needle Bar 152: Needle seat 152a: Long slot 153: Needle 153a: The first needle 153b: Second needle 16: Inner presser unit 161: Internal presser foot 162: Internal presser foot drive unit 17: Movable seat 18: Cauldron 181: The First Cauldron 181a: The first connection frame 181b: The first needle board 181b1: the first pinhole 181c: The first kettle shaft 181d: First hook 181e: the first bevel gear set 181e1: The first perforation hole 182: The Second Cauldron 182a: The second connecting frame 182b: The second needle board 182b1: second pinhole 182c: second kettle shaft 182d: The second hook 182e: second bevel gear set 182e1: The second perforation hole 20: Front turning mechanism 21: Front gear box 22: Front drive source 23: Front turning column 30: Needle length adjustment mechanism 31: Adjusting lever 32: adjustment unit 321: Gear 322: first rack 323: second rack 40: Needle pitch drive mechanism 41: Needle pitch drive source 42: Needle pitch drive unit 421: The first gauge pulley 422: second gauge pulley 423: first stitch length drive belt 424: Relay Wheels 425: connecting seat 426: Second stitch length drive belt 427: Stitch synchronization unit 427a: Needle pitch synchronization groove 427b: Needle pitch synchronization boss 50: Kettle table drive mechanism 51: base gear box 52: Kettle drive source 53: Cauldron platform rotating column 60: Rotary shuttle drive mechanism 61: Rotary hook drive source 62: Rotary shuttle drive unit 621: The first hook pulley 622: Second hook pulley 623: Rotary shuttle drive belt 624: Rotary shuttle shaft 625: The first rotary hook synchronization unit 625a: The first flower sleeve 625b: The first flower piece axis 626: The second rotary hook synchronization unit 626a: The second flower sleeve 626b: The second flower piece shaft 70: Hole pitch drive mechanism 71: Hole pitch drive source 72: pitch drive unit 721: first pitch pulley 722: second pitch pulley 723: Pitch drive belt 724: first transmission rod 725: first moving block 725a: first inner hole 726: The first screw unit 726a: The first external thread 726b: first internal thread 727: conversion unit 727a: first conversion gear 727b: second conversion gear 728: Second Transmission Rod 729: second moving block 729a: second inner hole 730: second screw unit 730a: second external thread 730b: second internal thread F1: First direction F2: second direction F3: The first direction of rotation F4: Second rotation direction 80: Double needle rotary head pattern sewing machine 81: head rotation unit 82: base rotating unit 83: X-Y axis feeding unit 84: Needle Bar 85: Needle clip 86: Needle 87: Needle plate 871: pinhole

圖1A為習知雙針旋轉頭花樣縫紉機的立體圖；圖1B為習知雙針縫紉機中兩機針經由針夾連接於針棒的示意圖；圖2為本發明可變針距縫紉機的立體圖；圖3為本發明車頭轉動機構、針距調整機構與針距驅動機構都安裝於車頭的示意圖；圖4為針棒驅動單元、針棒單元與壓腳單元三者位在車頭內部的示意圖；圖5A為針距調整機構設置於針棒單元的示意圖；圖5B為針距調整機構設置於針棒單元的分解圖；圖6為針距驅動機構安裝於針棒的示意圖；圖7A為調整桿受針棒帶動進行上下移動的示意圖；圖7B為針距同步凸柱在針距同步凹槽內來回移動的示意圖；圖8A與圖8B為增加兩機針之間距離的示意圖；圖8C與圖8D為縮短兩機針之間距離的示意圖；圖9為釜台驅動機構、旋梭驅動機構與孔距驅動機構都安裝於活動座的示意圖；圖10為兩釜台位在活動座內部的示意圖；圖11為旋梭驅動機構的分解圖；圖12為第一旋梭同步單元的示意圖；圖13為孔距驅動機構的示意圖；圖14為第一旋梭與第二旋梭兩者進行轉動的示意圖；圖15A至圖15C為增加兩針孔之間距離的示意圖；圖15D至圖15F為縮短兩針孔之間距離的示意圖；圖16為於第二較佳實施例中針距調整機構組裝於針棒單元的示意圖；圖17A為兩齒條同時移動以增加兩機針之間距離的示意圖；圖17B為兩齒條同時移動以縮短兩機針之間距離的示意圖；圖18為第二旋梭同步單元的示意圖；圖19為第二較佳實施例中孔距驅動機構的示意圖；圖20A至圖20C為增加兩針孔之間距離的示意圖；圖20D至圖20F為縮短兩針孔之間距離的示意圖；以及圖21為第三較佳實施例中針具驅動機構組裝於調整桿的示意圖。 Figure 1A is a perspective view of a conventional double-needle rotary head pattern sewing machine; 1B is a schematic diagram of the two needles of the conventional double-needle sewing machine connected to the needle bar via the needle clamp; Figure 2 is a perspective view of the variable stitch sewing machine of the present invention; Figure 3 is a schematic diagram of the front turning mechanism, the stitch length adjusting mechanism and the stitch length driving mechanism of the present invention are all installed on the front of the car; Figure 4 is a schematic diagram of the needle bar drive unit, the needle bar unit and the presser foot unit located inside the front of the car; Fig. 5A is a schematic diagram of the needle pitch adjusting mechanism arranged in the needle bar unit; Figure 5B is an exploded view of the needle length adjusting mechanism provided in the needle bar unit; Figure 6 is a schematic diagram of the stitch length driving mechanism installed on the needle bar; Figure 7A is a schematic diagram of the adjustment rod moving up and down driven by the needle bar; Fig. 7B is a schematic diagram of the stitch length synchronization boss moving back and forth in the stitch length synchronization groove; 8A and 8B are schematic diagrams of increasing the distance between two needles; 8C and 8D are schematic diagrams of shortening the distance between two needles; Figure 9 is a schematic diagram of the kettle table drive mechanism, the rotary shuttle drive mechanism and the hole pitch drive mechanism are all installed on the movable seat; Figure 10 is a schematic diagram of the two kettle platforms inside the movable seat; Figure 11 is an exploded view of the rotary hook drive mechanism; Figure 12 is a schematic diagram of the first rotary hook synchronization unit; Figure 13 is a schematic diagram of a pitch drive mechanism; Figure 14 is a schematic diagram of both the first rotary hook and the second rotary hook rotating; 15A to 15C are schematic diagrams of increasing the distance between two pinholes; 15D to 15F are schematic diagrams of shortening the distance between two pinholes; 16 is a schematic diagram of the needle length adjusting mechanism assembled in the needle bar unit in the second preferred embodiment; Figure 17A is a schematic diagram of two racks moving at the same time to increase the distance between two needles; Figure 17B is a schematic diagram of two racks moving at the same time to shorten the distance between the two needles; Figure 18 is a schematic diagram of the second rotary hook synchronization unit; Figure 19 is a schematic diagram of the hole pitch driving mechanism in the second preferred embodiment; 20A to 20C are schematic diagrams of increasing the distance between two pinholes; 20D to 20F are schematic diagrams of shortening the distance between two pinholes; and Fig. 21 is a schematic diagram of the needle drive mechanism assembled to the adjusting rod in the third preferred embodiment.

151:針棒 151: Needle Bar

152:機針座 152: Needle seat

152a:長槽孔 152a: Long slot

153:機針 153: Needle

153a:第一機針 153a: The first needle

153b:第二機針 153b: Second needle

30:針距調整機構 30: Needle length adjustment mechanism

31:調整桿 31: Adjusting lever

32:調整單元 32: adjustment unit

321:齒輪 321: Gear

322:第一齒條 322: first rack

Claims

一種可變針距縫紉機，包含：一車頭，具有一上軸以及一針棒，上述上軸能進行轉動以帶動上述針棒進行上下移動，使位在上述針棒下端的兩機針同步與上述針棒進行移動；一針距驅動機構；一針距調整機構，具有一穿設於上述針棒的調整桿以及一位在上述調整桿與兩機針之間的調整單元，上述調整桿受到上述針距驅動機構帶動而能進行轉動，而上述調整單元透過進行旋轉運動的上述調整桿而能帶動至少一上述機針進行橫向運動，使得上述兩機針能彼此靠近或遠離。 A variable stitch sewing machine, including: A headstock having an upper shaft and a needle bar, the upper shaft can be rotated to drive the needle bar to move up and down, so that the two needles located at the lower end of the needle bar move synchronously with the needle bar; One stitch length drive mechanism; A stitch length adjusting mechanism has an adjusting rod penetrating the needle bar and an adjusting unit between the adjusting rod and the two needles. The adjusting rod is driven by the needle length driving mechanism to rotate, and The adjustment unit can drive at least one of the needles to move laterally through the adjustment rod that performs a rotational movement, so that the two needles can move closer or farther away from each other.

如請求項1所述可變針距縫紉機，其中，當上述針棒進行上下移動的過程中，上述針距驅動機構能同時帶動上述調整桿進行轉動。The variable stitch length sewing machine according to claim 1, wherein, when the needle bar moves up and down, the stitch length driving mechanism can simultaneously drive the adjustment rod to rotate.

如請求項1所述可變針距縫紉機，其中，上述車頭安裝一能產生旋轉動力的車頭轉動機構，而上述車頭轉動機構能帶動上述車頭進行轉動，使上述針距調整機構與針距驅動機構兩者同步與上述車頭進行轉動。The variable stitch sewing machine according to claim 1, wherein the head of the head is equipped with a head rotating mechanism capable of generating rotational power, and the head of the head rotating mechanism can drive the head of the head to rotate, so that the stitch length adjusting mechanism and the stitch length driving mechanism The two rotate synchronously with the front of the vehicle.

如請求項1所述可變針距縫紉機，其中，上述調整單元具有一連接於上述調整桿的齒輪以及一連接於其中一個上述機針的第一齒條，上述齒輪受到上述調整桿帶動而進行旋轉，而上述第一齒條嚙合於上述齒輪，使上述第一齒條能帶動其中一個上述機針沿著一相交於上述針棒的第一方向進行橫向移動。The variable stitch sewing machine according to claim 1, wherein the adjusting unit has a gear connected to the adjusting lever and a first rack connected to one of the needles, and the gear is driven by the adjusting lever to perform Rotating, and the first rack is meshed with the gear, so that the first rack can drive one of the needles to move laterally along a first direction that intersects the needle bar.

如請求項4所述可變針距縫紉機，其中，上述齒輪於相對上述第一齒條的一側嚙合一第二齒條，上述第二齒條連接於另一個上述機針，使上述齒輪進行轉動時，上述第一齒條帶動其中一個上述機針沿著上述第一方向進行橫向直線移動，而上述第二齒條同時帶動另一個上述機針沿著一相反於上述第一方向的第二方向進行橫向直線移動。The variable needle pitch sewing machine according to claim 4, wherein the gear meshes with a second rack on a side opposite to the first rack, and the second rack is connected to the other needle to make the gear perform When rotating, the first rack drives one of the needles to move horizontally and linearly along the first direction, and the second rack simultaneously drives the other needle along a second direction opposite to the first direction. The direction performs a horizontal linear movement.

如請求項1所述可變針距縫紉機，其中，上述針距驅動機構具有一遠離於上述針棒的針距驅動源以及一連接於上述針距驅動源的針距傳動單元，上述針距傳動單元與調整桿之間設有一針距同步單元以讓上述調整桿能相對於上述針距傳動單元進行軸向移動，而上述針距同步單元能讓上述針距傳動單元與調整桿兩者能同步進行旋轉。The variable stitch length sewing machine according to claim 1, wherein the stitch length drive mechanism has a stitch length drive source away from the needle bar and a stitch length transmission unit connected to the stitch length drive source, the stitch length transmission A stitch length synchronization unit is provided between the unit and the adjusting rod to allow the adjusting rod to move axially relative to the needle length transmission unit, and the needle length synchronization unit can synchronize the needle length transmission unit and the adjusting rod. Rotate.

如請求項6所述可變針距縫紉機，其中，上述針距同步單元具有一針距同步凹槽以及一針距同步凸柱，上述針距同步凹槽形成於上述針距傳動單元與調整桿兩者其中之一，而上述針距同步凸柱形成於上述針距傳動單元與調整桿兩者其中之另一者，並穿設於上述針距同步凹槽，使上述調整桿進行上下移動的過程中，上述針距同步凸柱會在上述針距同步凹槽的內部上下往復移動。The variable stitch length sewing machine according to claim 6, wherein the stitch length synchronization unit has a stitch length synchronization groove and a stitch length synchronization boss, and the stitch length synchronization groove is formed in the stitch length transmission unit and the adjusting rod One of the two, and the above-mentioned stitch length synchronization protrusion is formed on the other of the above-mentioned stitch length transmission unit and the adjusting rod, and penetrates the above-mentioned stitch length synchronization groove to make the above-mentioned adjusting rod move up and down During the process, the above-mentioned stitch length synchronization protrusion will reciprocate up and down inside the above-mentioned stitch length synchronization groove.

如請求項1所述可變針距縫紉機，其中，上述可變針距縫紉機進一步包含：兩釜台，每一個上述釜台具有一能進行轉動的旋梭以及一位在上述旋梭一側的針板，而上述針板具有一對位於其中一個上述機針的針孔；一旋梭驅動機構，能帶動每一個上述釜台的旋梭同時進行轉動；以及一孔距驅動機構，能在上述兩機針彼此靠近或遠離時，同步帶動至少一個釜台沿著上述第一方向進行移動，使上述兩針孔之間的距離相同於上述兩機針之間的距離。 The variable stitch length sewing machine according to claim 1, wherein the variable stitch length sewing machine further comprises: Two autoclave stations, each of the autoclave stations has a rotatable rotary hook and a needle plate on one side of the rotary hook, and the needle plate has a pair of needle holes located on one of the needles; A rotary hook drive mechanism that can drive the rotary hooks of each of the above-mentioned kettle tables to rotate simultaneously; and A pitch drive mechanism can synchronously drive at least one kettle table to move along the first direction when the two needles are close to or far away from each other, so that the distance between the two needle holes is the same as the distance between the two needles. distance.

如請求項8所述可變針距縫紉機，其中，上述兩釜台、旋梭驅動機構與孔距驅動機構四者都連接於一能自由轉動的活動座，上述活動座安裝一能產生旋轉動力的釜台驅動機構，上述釜台驅動機構能經由上述活動座而同時帶動上述兩釜台、旋梭驅動機構與孔距驅動機構四者同時進行轉動。As described in claim 8, wherein the above-mentioned two kettle tables, the rotary shuttle drive mechanism and the hole-pitch drive mechanism are all connected to a freely rotatable movable seat, and the movable seat is equipped with a movable seat capable of generating rotational power. The kettle table drive mechanism, the kettle table drive mechanism can simultaneously drive the two kettle tables, the shuttle drive mechanism and the hole pitch drive mechanism to rotate at the same time via the movable seat.

如請求項8所述可變針距縫紉機，其中，上述孔距驅動機構具有一能進行移動的第一移動塊以及一能進行轉動的第一傳動桿，上述第一移動塊連接於其中一個上述釜台，並與上述第一傳動桿之間設有一能將旋轉運動改變為直線運動的第一螺桿單元，而上述第一傳動桿沿著一第一轉動方向進行傳動，使上述第一移動塊透過上述第一螺桿單元而帶動其中一個上述釜台進行移動。The variable stitch length sewing machine according to claim 8, wherein the hole pitch driving mechanism has a first movable block that can be moved and a first transmission rod that can be rotated, and the first movable block is connected to one of the There is a first screw unit capable of changing the rotation motion into linear motion between the kettle table and the first transmission rod, and the first transmission rod transmits along a first rotation direction, so that the first moving block can pass through The first screw unit drives one of the kettle tables to move.

如請求項10所述可變針距縫紉機，其中，上述孔距驅動機構進一步具有一連接於另一個上述釜台的第二移動塊以及一間隔排列於上述第一傳動桿的第二傳動桿，上述第二移動塊與上述第二傳動桿之間設有一能將旋轉運動改變為直線運動的第二螺桿單元，而上述第二傳動桿與第一傳動桿之間設有一能改變轉動方向的轉換單元，使上述第一傳動桿沿著上述第一轉動方向進行轉動時，上述第二傳動桿透過上述轉換單元而沿著一相反於上述第一轉動方向的第二轉動方向進行轉動，進而使上述第一移動塊與第二移動塊兩者朝向相反方向進行移動。The variable stitch length sewing machine according to claim 10, wherein the hole-pitch driving mechanism further has a second moving block connected to another of the kettle table and a second transmission rod arranged at intervals on the first transmission rod, the Between the second moving block and the second transmission rod is provided a second screw unit capable of changing the rotational motion to linear motion, and between the second transmission rod and the first transmission rod is provided a conversion unit capable of changing the direction of rotation When the first transmission rod is rotated along the first rotation direction, the second transmission rod is rotated in a second rotation direction opposite to the first rotation direction through the conversion unit, thereby causing the first rotation direction to be rotated. Both the one moving block and the second moving block move in opposite directions.