WO2021052081A1 - Automatic rear dragging wheel lifting structure on sewing machine - Google Patents

Automatic rear dragging wheel lifting structure on sewing machine Download PDF

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Publication number
WO2021052081A1
WO2021052081A1 PCT/CN2020/109542 CN2020109542W WO2021052081A1 WO 2021052081 A1 WO2021052081 A1 WO 2021052081A1 CN 2020109542 W CN2020109542 W CN 2020109542W WO 2021052081 A1 WO2021052081 A1 WO 2021052081A1
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WIPO (PCT)
Prior art keywords
tug
lever
crank
lifting
sewing machine
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PCT/CN2020/109542
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French (fr)
Chinese (zh)
Inventor
胡维维
梅晓靖
梅红
Original Assignee
浙江翔科缝纫机股份有限公司
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Priority to CN201921579709.6 priority Critical
Priority to CN201921579709.6U priority patent/CN211284807U/en
Application filed by 浙江翔科缝纫机股份有限公司 filed Critical 浙江翔科缝纫机股份有限公司
Publication of WO2021052081A1 publication Critical patent/WO2021052081A1/en

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    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B27/00Work-feeding means
    • D05B27/10Work-feeding means with rotary circular feed members
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B27/00Work-feeding means
    • D05B27/10Work-feeding means with rotary circular feed members
    • D05B27/18Feed cups
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B29/00Pressers; Presser feet
    • D05B29/02Presser-control devices
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B69/00Driving-gear; Control devices
    • D05B69/02Mechanical drives
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B69/00Driving-gear; Control devices
    • D05B69/08Fluid drives, e.g. pneumatic
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B69/00Driving-gear; Control devices
    • D05B69/10Electrical or electromagnetic drives

Abstract

An automatic rear dragging wheel lifting structure on a sewing machine, relating to the technical field of garment manufacturing devices. The technical problem that an existing rear dragging wheel lifting driving structure is inconvenient to mount and the like are solved. The sewing machine comprises a machine housing (1), a dragging wheel shaft (2) vertically provided on the machine housing (1) and capable of moving up and down, and a rear dragging wheel (3) fixedly provided at a lower end of the dragging wheel shaft (2); the automatic rear dragging wheel lifting structure comprises a lifting block (4) fixedly provided on the dragging wheel shaft (2) and a driving member (5) fixedly provided on an outer side surface of the machine housing (1); a lever (6) capable of swinging and a crank (7) capable of swinging are respectively hinged to the outer side surface of the machine housing (1), one end of the lever (6) is connected to one end of the crank (7) by means of a connecting rod (8), the other end of the lever (6) is connected to an output shaft of the driving member (5), the other end of the crank (7) is connected to the lifting block (4), and the crank (7) swings to drive the lifting block (4) to move up and down. According to the present automatic rear dragging wheel lifting structure, the driving member (5) is provided on the outer side of the machine housing (1), mounting space and moving space are large, the driving member (5) is convenient to mount, detach and maintain, and interference and collision with other parts are avoided.

Description

一种缝纫机上的自动抬后拖轮结构Automatic rear-lifting tug structure on sewing machine 技术领域Technical field
本实用新型属于服装制造设备技术领域,涉及一种缝纫机,特别是一种缝纫机上的自动抬后拖轮结构。The utility model belongs to the technical field of clothing manufacturing equipment, and relates to a sewing machine, in particular to an automatic rear-lifting tug structure on the sewing machine.
背景技术Background technique
缝纫机是用一根或多根缝纫线,在缝料上形成一种或多种线迹,使一层或多层缝料交织或缝合起来的机器。缝纫机能缝制棉、麻、丝、毛、人造纤维等织物和皮革、塑料、纸张等制品,缝出的线迹整齐美观、平整牢固,缝纫速度快、使用简便。传统缝纫机送料方式为送布牙送料,这种送料方式送布力量有限,尤其是带有特殊材料的缝料,送布较为吃力,表现为针迹过小。为此,一些缝纫机设置了后拖轮装置,缝纫机中的后拖轮也需要时常抬起,现有技术中后拖轮要么同压脚一起采用同一驱动机构进行同步升降驱动,不能独立分开控制,而且驱动件受力较大;或者采用单独设置在缝纫机机壳内部的气缸进行驱动,安装不便,且需要提供气源,其使用环境受到限制。A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interlace or sew one or more layers of sewing material. The sewing machine can sew cotton, linen, silk, wool, man-made fibers and other fabrics and leather, plastic, paper and other products. The stitches sewn are neat and beautiful, flat and firm, and the sewing speed is fast and easy to use. The traditional sewing machine feeding method is feeding by the feeding teeth. This feeding method has limited feeding force, especially for sewing materials with special materials, which is more difficult to feed, and the stitches are too small. For this reason, some sewing machines are equipped with a rear tug device, and the rear tug in the sewing machine also needs to be lifted frequently. In the prior art, the rear tug or the presser foot uses the same driving mechanism for synchronous lifting and driving, and cannot be independently controlled separately, and the driving parts The force is large; or it is driven by a cylinder separately arranged inside the sewing machine casing, which is inconvenient to install, and it needs to provide an air source, and its use environment is restricted.
中国专利(公开号:CN205024415U,公开日:2016-02-10)公开了一种机械式内置后拖轮机构,在机座上设置有调压导杆及压杆,调压导杆与压杆通过弹簧弹性连接,压杆的下端伸出机座之外与拖布轮架连接,拖布轮架上设置有拖布轮,在拖布轮的下方设置有与拖布轮配合滚动的滚子,在机座内的压杆上固设有压杆导架,在机座内还设置有动力源,动力源的驱动杆与压杆导架连接,动力源与控制器电连接,控制器控制动力源的动作进而控制压杆的上下移动实现拖布轮的抬起与下压,所述拖布轮通过连接机构与缝纫机主轴连接,缝纫机主轴转动通过连接机构带动拖布 轮滚动。Chinese Patent (Publication No.: CN205024415U, Publication Date: 2016-02-10) discloses a mechanical built-in rear tug mechanism. A pressure regulating guide rod and a pressure rod are arranged on the machine base, and the pressure regulating guide rod and the pressure rod pass through The spring is elastically connected. The lower end of the pressure rod extends out of the machine base to connect with the mop wheel frame. The mop wheel frame is provided with a mop wheel. The pressure rod is fixedly provided with a pressure rod guide frame, and a power source is also provided in the machine base. The driving rod of the power source is connected with the pressure rod guide frame, and the power source is electrically connected with the controller. The controller controls the action of the power source and then controls The up and down movement of the pressing rod realizes the lifting and pressing of the mop wheel. The mop wheel is connected with the main shaft of the sewing machine through a connecting mechanism, and the rotation of the main shaft of the sewing machine drives the mop wheel to roll through the connecting mechanism.
上述专利文献中的动力源安装在机座内,其安装空间受到很大的限制,装配及修理非常不便,而且由于机座内部的零部件和传动件较多,容易相互干涉。The power source in the above-mentioned patent documents is installed in the machine base, and its installation space is greatly restricted, which is very inconvenient for assembly and repair, and because there are many parts and transmission parts inside the machine base, it is easy to interfere with each other.
发明内容Summary of the invention
本实用新型针对现有的技术存在的上述问题,提供一种缝纫机上的自动抬后拖轮结构,本实用新型所要解决的技术问题是:如何提供后拖轮抬升驱动结构的安装及维修的便捷性并减少干涉影响。Aiming at the above-mentioned problems existing in the prior art, the utility model provides an automatic rear tug structure on a sewing machine. The technical problem to be solved by the utility model is: how to provide the convenience of installation and maintenance of the rear tug raising drive structure and Reduce the influence of interference.
本实用新型的目的可通过下列技术方案来实现:The purpose of the utility model can be achieved through the following technical solutions:
一种缝纫机上的自动抬后拖轮结构,缝纫机包括机壳、竖向设置在所述机壳上且能够上下移动的拖轮轴以及固设在所述拖轮轴下端的后拖轮,其特征在于,所述自动抬后拖轮结构包括固设在所述拖轮轴上的抬升块以及固设在所述机壳外侧面上的驱动件,所述机壳外侧面上分别铰接有能够摆动的杠杆和能够摆动的曲柄,所述杠杆的一端与所述曲柄的一端通过连杆相连接,所述杠杆的另一端与所述驱动件的输出轴相连接,所述曲柄的另一端与所述抬升块相连接且所述曲柄摆动能够带动所述抬升块上下移动。An automatic rear-lifting tug structure on a sewing machine. The sewing machine comprises a casing, a tug shaft vertically arranged on the casing and capable of moving up and down, and a rear tug fixed at the lower end of the tug shaft, characterized in that: The automatic rear-lifting tugboat structure includes a lifting block fixed on the tug-wheel shaft and a driving member fixed on the outer surface of the casing. The outer surface of the casing is respectively hinged with a swingable lever and a swingable lever. The crank, one end of the lever and one end of the crank are connected by a connecting rod, the other end of the lever is connected with the output shaft of the driving member, and the other end of the crank is connected with the lifting block And the swing of the crank can drive the lifting block to move up and down.
其原理如下:后拖轮通常与下托轮对应设置,缝料在台板上位于后拖轮与下托轮两者之间,两者共同作用实现缝料的进给。后拖轮在放入缝料或取出缝料时需要抬升,本技术方案中通过设置在机壳外部的驱动件单独控制驱动,具体来说,驱动件驱动杠杆摆动,杠杆通过连杆带动曲柄摆动,曲柄摆动时带动抬升块向上移动,从而带动拖轮轴以及拖轮轴下端的后拖轮抬升。本技术方案中将驱动件设置在机壳的外侧,安装空间和活动空间大,方便驱动件的安装、拆卸及维修,而且也不会与其它零部件形成干 涉碰撞;另外本技术方案中驱动件与拖轮轴及抬升块之间通过杠杆、连杆、曲柄等多个零部件传动,能够灵活设置驱动件的安装位置,合理布局,保证整机紧凑性的同时提高其便捷性和可靠性。The principle is as follows: the rear tug is usually set corresponding to the lower supporting roller, and the sewing material is located between the rear tug and the lower supporting roller on the table, and the two work together to realize the feeding of the sewing material. The rear tug needs to be lifted when the sewing material is put in or taken out. In this technical solution, the driving part is separately controlled and driven by the driving part arranged outside the casing. Specifically, the driving part drives the lever to swing, and the lever drives the crank to swing through the connecting rod. When the crank swings, the lifting block is driven to move upward, thereby driving the tug shaft and the rear tug at the lower end of the tug shaft to lift. In this technical solution, the driving part is arranged on the outside of the casing, with large installation space and movable space, which is convenient for the installation, disassembly and maintenance of the driving part, and will not interfere with other parts; in addition, the driving part in this technical solution Driven by levers, connecting rods, cranks and other components between the tug wheel shaft and the lifting block, the installation position of the driving parts can be flexibly set, and the reasonable layout can ensure the compactness of the whole machine while improving its convenience and reliability.
在上述的缝纫机上的自动抬后拖轮结构中,所述杠杆和曲柄间隔设置且均位于所述机壳外侧面靠近上端位置,所述杠杆呈长条形,所述曲柄呈L型或V型,所述杠杆的中部以及曲柄的中部通过轴位螺钉一铰接在所述机壳上,所述连杆的两端通过轴位螺钉二分别与所述杠杆和曲柄的端部相铰接。杠杆和曲柄传递驱动件的力矩,合理绕开后拖轮的其它驱动结构,避免干涉。In the above-mentioned automatic rear-lifting tug structure on the sewing machine, the lever and the crank are arranged at intervals and are located on the outer side of the casing near the upper end, the lever is elongated, and the crank is L-shaped or V-shaped The middle part of the lever and the middle part of the crank are hinged to the casing through the first axis screw, and the two ends of the connecting rod are respectively hinged to the ends of the lever and the crank through the second axis screw. The lever and the crank transmit the torque of the driving parts, and reasonably bypass other driving structures of the rear tug to avoid interference.
在上述的缝纫机上的自动抬后拖轮结构中,所述驱动件为电磁铁,所述电磁铁的壳体通过安装板固设在所述机壳的侧面,所述电磁铁的输出轴朝向缝纫机的机头,所述电磁铁的输出轴具有开口槽,所述杠杆的一端插入所述开口槽内且该端端部具有沿杠杆长度方向的条形孔一,所述电磁铁的输出轴上设有连接销且所述连接销的内端伸入到所述开口槽内并穿过所述杠杆的条形孔一。利用电磁铁作为驱动件,结构简单,制造成本和使用成本低,而且不受气源等外部条件的限制,方便可靠。In the above-mentioned automatic rear-lifting tug structure on the sewing machine, the driving member is an electromagnet, the electromagnet shell is fixed on the side of the machine shell through a mounting plate, and the output shaft of the electromagnet faces the sewing machine In the handpiece, the output shaft of the electromagnet has an open slot, one end of the lever is inserted into the open slot and the end has a strip hole along the length of the lever. The output shaft of the electromagnet is A connecting pin is provided, and the inner end of the connecting pin extends into the opening groove and passes through the strip hole one of the lever. The electromagnet is used as the driving part, the structure is simple, the manufacturing cost and the use cost are low, and it is not restricted by external conditions such as air source, and is convenient and reliable.
作为替代方案驱动件还可以是气缸,液压缸或电机等。As an alternative, the driving part can also be a cylinder, a hydraulic cylinder or an electric motor.
在上述的缝纫机上的自动抬后拖轮结构中,所述抬升块靠近所述调压导杆的上端,所述抬升块上开设有竖向的通孔,所述调压导杆的上端插设在所述通孔内,所述抬升块的一侧开设有与所述通孔相连通的锁紧孔,所述锁紧孔内螺接有能够抵靠在所述调压导杆上端外周面上的锁紧螺钉。后拖轮的抬升高度对精准度要求不高,上述结构能够避免装配误差,零部件之间的传动更加灵活,不易卡死。In the above-mentioned automatic rear-lifting tug structure on the sewing machine, the lifting block is close to the upper end of the pressure regulating guide rod, the lifting block is provided with a vertical through hole, and the upper end of the pressure regulating guide rod is inserted In the through hole, one side of the lifting block is provided with a locking hole communicating with the through hole, and the locking hole is screwed into the outer peripheral surface of the upper end of the pressure regulating guide rod Screw on the top. The lifting height of the rear tug does not require high accuracy. The above-mentioned structure can avoid assembly errors, and the transmission between parts is more flexible and not easy to jam.
在上述的缝纫机上的自动抬后拖轮结构中,所述机壳上横向设有能够转动的转轴,所述转轴的一端伸入所述壳体内且该端固设有摆动板,所述摆动板外端连接有与所述抬升块底部相接触的 顶升销;所述转轴的另一端位于所述壳体外且该端固设有手柄。本技术方案中除了通过驱动件电动或气动等自动控制外,还可以手动操作,实现后拖轮的抬升。In the above-mentioned automatic rear-lifting tug structure on the sewing machine, a rotating shaft is horizontally provided on the casing, one end of the rotating shaft extends into the casing and the end is fixedly provided with a swing plate, the swing plate The outer end is connected with a jacking pin which is in contact with the bottom of the lifting block; the other end of the rotating shaft is located outside the housing and the end is fixedly provided with a handle. In this technical solution, in addition to the automatic control of the driving parts such as electric or pneumatic, it can also be operated manually to realize the lifting of the rear tug.
在上述的缝纫机上的自动抬后拖轮结构中,所述抬升块的另一侧固设有销轴,所述曲柄的端部通过轴位螺钉三铰接有竖向的拉板,所述拉板的下端开设有竖向的条形孔二,所述销轴的外端插设在所述条形孔二内。In the above-mentioned automatic rear-lifting tug structure on the sewing machine, the other side of the lifting block is fixedly provided with a pin shaft, the end of the crank is three-hingedly connected with a vertical pull plate by an axial screw, and the pull plate Two vertical strip holes are opened at the lower end, and the outer end of the pin is inserted into the second strip hole.
在上述的缝纫机上的自动抬后拖轮结构中,所述机壳上设有竖向的调压导杆,所述调压导杆的上端设有调压螺钉,所述拖轮轴的上端开设有沿其轴线的导向孔,所述调压导杆的下端滑动插设在所述导向孔内。调压导杆的下端与拖轮轴滑动配合,对拖轮轴起到导向和限位作用,保证其上下移动的稳定可靠性,减少晃动;通过调压螺钉对调压导杆进行调整,再通过调压导杆限制拖轮轴的移动幅度,从而满足多样化需求。In the above-mentioned automatic rear-lifting tug structure on the sewing machine, the casing is provided with a vertical pressure regulating guide rod, the upper end of the pressure regulating guide rod is provided with a pressure regulating screw, and the upper end of the tug shaft is provided with a pressure regulating screw. A guide hole along its axis, the lower end of the pressure regulating guide rod is slidably inserted in the guide hole. The lower end of the pressure regulating guide rod is slidably fitted with the tug wheel shaft to guide and limit the tug wheel shaft to ensure the stability and reliability of its up and down movement and reduce shaking; the pressure regulating guide rod is adjusted by the pressure regulating screw, and then through the adjustment The pressure guide rod limits the range of movement of the tug wheel shaft to meet diversified needs.
与现有技术相比,本实用新型中的自动抬后拖轮结构具有以下优点:Compared with the prior art, the automatic rear-lifting tug structure of the present invention has the following advantages:
1、本自动抬后拖轮结构将驱动件设置在机壳的外侧,安装空间和活动空间大,方便驱动件的安装、拆卸及维修,而且也不会与其它零部件形成干涉碰撞。1. In this automatic rear-lifting tug wheel structure, the driving part is arranged on the outside of the casing, and the installation space and movement space are large, which is convenient for the installation, disassembly and maintenance of the driving part, and it will not interfere with other parts.
2、本自动抬后拖轮结构中驱动件与拖轮轴及抬升块之间通过杠杆、连杆、曲柄等多个零部件传动,能够灵活设置驱动件的安装位置,合理布局,保证整机紧凑性的同时提高其便捷性和可靠性。2. In the structure of the automatic rear tugboat, the driving part and the tugboat shaft and lifting block are driven by levers, connecting rods, cranks and other components, which can flexibly set the installation position of the driving parts, rationally layout, and ensure the compactness of the whole machine While improving its convenience and reliability.
附图说明Description of the drawings
图1是本自动抬后拖轮结构的安装使用结构示意图。Figure 1 is a schematic diagram of the installation and use structure of the automatic rear-lifting tugboat structure.
图2是本自动抬后拖轮结构的立体结构示意图一。Figure 2 is the first three-dimensional structure diagram of the automatic rear-lifting tugboat structure.
图3是本自动抬后拖轮结构的立体结构示意图二。Fig. 3 is the second three-dimensional structure diagram of the automatic rear-lifting tugboat structure.
图中,1、机壳;2、拖轮轴;21、导向孔;3、后拖轮;4、抬升块;41、通孔;42、锁紧孔;43、锁紧螺钉;44、销轴;5、驱动件;51、电磁铁;51a、开口槽;6、杠杆;61、条形孔一;7、曲柄;8、连杆;9、轴位螺钉一;10、轴位螺钉二;11、安装板;12、连接销;13、转轴;14、摆动板;15、顶升销;16、手柄;17、拉板;17a、条形孔二;18、轴位螺钉三;19、调压导杆;20、调压螺钉。In the figure, 1. housing; 2. tug shaft; 21, guide hole; 3. rear tug; 4. lifting block; 41, through hole; 42, locking hole; 43, locking screw; 44, pin shaft; 5. Driver; 51. Electromagnet; 51a. Open slot; 6. Lever; 61. Strip hole one; 7. Crank; 8. Connecting rod; 9. Axle screw one; 10. Axle screw two; 11 12. Mounting plate; 12. Connecting pin; 13. Rotating shaft; 14. Swing plate; 15. Lifting pin; 16. Handle; 17, Pull plate; 17a. Strip hole two; 18. Axial screw three; 19. Adjusting Pressure guide rod; 20, pressure regulating screw.
具体实施方式detailed description
以下是本实用新型的具体实施例并结合附图,对本实用新型的技术方案作进一步的描述,但本实用新型并不限于这些实施例。The following are specific embodiments of the present utility model combined with the accompanying drawings to further describe the technical solution of the present utility model, but the present utility model is not limited to these embodiments.
如图1、图2和图3所示,缝纫机包括台板、机壳1、机壳1的机头部位设置设有拖轮轴2,拖轮轴2竖向设置且能够上下移动,拖轮轴2的下端固设有后拖轮3,后拖轮3位于台板上方,台板下方设有与后拖轮3相对的下托轮。本自动抬后拖轮结构包括固设在拖轮轴2上的抬升块4以及固设在机壳1外侧面上的驱动件5,机壳1外侧面上分别铰接有能够摆动的杠杆6和能够摆动的曲柄7,杠杆6的一端与曲柄7的一端通过连杆8相连接,杠杆6的另一端与驱动件5的输出轴相连接,曲柄7的另一端与抬升块4相连接且曲柄7摆动能够带动抬升块4上下移动。具体来说,本实施例中的驱动件5为电磁铁51,电磁铁51的壳体通过安装板11固设在机壳1的侧面,电磁铁51的输出轴朝向缝纫机的机头,杠杆6和曲柄7间隔设置且均位于机壳1外侧面靠近上端位置,杠杆6呈长条形,曲柄7呈L型或V型,杠杆6的中部以及曲柄7的中部通过轴位螺钉一9铰接在机壳1上,连杆8的两端通过轴位螺钉二10分别与杠杆6和曲柄7的端部相铰接。As shown in Figure 1, Figure 2 and Figure 3, the sewing machine includes a platen, a casing 1, and the head of the casing 1 is provided with a tug shaft 2. The tug shaft 2 is arranged vertically and can move up and down. A rear tug 3 is fixedly arranged at the lower end, the rear tug 3 is located above the platform, and a lower supporting wheel opposite to the rear tug 3 is provided below the platform. The automatic rear-lifting tugboat structure includes a lifting block 4 fixed on the tug wheel shaft 2 and a driving member 5 fixed on the outer surface of the casing 1. The outer surface of the casing 1 is hinged with a swingable lever 6 and a swingable lever 6 respectively. The crank 7, one end of the lever 6 and one end of the crank 7 are connected by a connecting rod 8, the other end of the lever 6 is connected with the output shaft of the driving member 5, the other end of the crank 7 is connected with the lifting block 4 and the crank 7 swings It can drive the lifting block 4 to move up and down. Specifically, the driving member 5 in this embodiment is an electromagnet 51, the housing of the electromagnet 51 is fixed on the side of the casing 1 through the mounting plate 11, the output shaft of the electromagnet 51 faces the head of the sewing machine, and the lever 6 It is spaced apart from the crank 7 and is located near the upper end of the outer side of the casing 1. The lever 6 is elongated, the crank 7 is L-shaped or V-shaped, and the middle of the lever 6 and the middle of the crank 7 are hinged on the shaft by an axial screw 9 On the casing 1, the two ends of the connecting rod 8 are hinged with the ends of the lever 6 and the crank 7 through two axial screws 10, respectively.
使用时,缝料在台板上位于后拖轮3与下托轮两者之间,两者共同作用实现缝料的进给。后拖轮3在放入缝料或取出缝料时 需要抬升,本实施例中通过设置在机壳1外部的驱动件5单独控制驱动,具体来说,驱动件5驱动杠杆6摆动,杠杆6通过连杆8带动曲柄7摆动,曲柄7摆动时带动抬升块4向上移动,从而带动拖轮轴2以及拖轮轴2下端的后拖轮3抬升。本实施例中将驱动件5设置在机壳1的外侧,安装空间和活动空间大,方便驱动件5的安装、拆卸及维修,而且也不会与其它零部件形成干涉碰撞;另外本实施例中驱动件5与拖轮轴2及抬升块4之间通过杠杆6、连杆8、曲柄7等多个零部件传动,能够灵活设置驱动件5的安装位置,合理布局,保证整机紧凑性的同时提高其便捷性和可靠性。When in use, the sewing material is located between the rear tug 3 and the lower supporting roller on the table, and the two work together to realize the sewing material feeding. The rear tug 3 needs to be lifted up when the sewing material is put in or taken out. In this embodiment, the driving part 5 arranged outside the casing 1 is separately controlled and driven. Specifically, the driving part 5 drives the lever 6 to swing, and the lever 6 passes through The connecting rod 8 drives the crank 7 to swing. When the crank 7 swings, the lifting block 4 moves upward, thereby driving the tug shaft 2 and the rear tug 3 at the lower end of the tug shaft 2 to lift. In this embodiment, the driving part 5 is arranged on the outside of the casing 1, and the installation space and the movable space are large, which is convenient for the installation, disassembly and maintenance of the driving part 5, and it will not interfere with other parts; in addition, this embodiment The middle driving part 5 and the tug wheel shaft 2 and the lifting block 4 are transmitted by lever 6, connecting rod 8, crank 7 and other components, which can flexibly set the installation position of the driving part 5, rationally layout, and ensure the compactness of the whole machine. At the same time improve its convenience and reliability.
如图2所示,电磁铁51的输出轴具有开口槽51a,杠杆6的一端插入开口槽51a内且该端端部具有沿杠杆6长度方向的条形孔一61,电磁铁51的输出轴上设有连接销12且连接销12的内端伸入到开口槽51a内并穿过杠杆6的条形孔一61;抬升块4靠近调压导杆19的上端,抬升块4上开设有竖向的通孔41,调压导杆19的上端插设在通孔41内,抬升块4的一侧开设有与通孔41相连通的锁紧孔42,锁紧孔42内螺接有能够抵靠在调压导杆19上端外周面上的锁紧螺钉43;机壳1上横向设有能够转动的转轴13,转轴13的一端伸入壳体内且该端固设有摆动板14,摆动板14外端连接有与抬升块4底部相接触的顶升销15;转轴13的另一端位于壳体外且该端固设有手柄16。本实施例中通过手动操作,也可以实现后拖轮3的抬升。As shown in Figure 2, the output shaft of the electromagnet 51 has an opening slot 51a. One end of the lever 6 is inserted into the opening slot 51a and the end has a strip hole 61 along the length of the lever 6. The output shaft of the electromagnet 51 The connecting pin 12 is provided with the inner end of the connecting pin 12 extending into the opening groove 51a and passing through the strip hole 61 of the lever 6; the lifting block 4 is close to the upper end of the pressure regulating guide rod 19, and the lifting block 4 is provided with In the vertical through hole 41, the upper end of the pressure regulating guide rod 19 is inserted into the through hole 41, one side of the lifting block 4 is provided with a locking hole 42 communicating with the through hole 41, and the locking hole 42 is screwed with A locking screw 43 that can abut on the outer peripheral surface of the upper end of the pressure regulating guide rod 19; a rotating shaft 13 is transversely provided on the casing 1, and one end of the rotating shaft 13 extends into the casing and the end is fixedly provided with a swing plate 14. The outer end of the swinging plate 14 is connected with a jacking pin 15 which is in contact with the bottom of the lifting block 4; the other end of the rotating shaft 13 is located outside the housing and a handle 16 is fixed at this end. In this embodiment, the rear tug 3 can also be lifted by manual operation.
如图2和图3所示,抬升块4的另一侧固设有销轴44,曲柄7的端部通过轴位螺钉三18铰接有竖向的拉板17,拉板17的下端开设有竖向的条形孔二17a,销轴44的外端插设在条形孔二17a内;机壳1上设有竖向的调压导杆19,调压导杆19的上端设有调压螺钉20,拖轮轴2的上端开设有沿其轴线的导向孔21,调压导杆19的下端滑动插设在导向孔21内。调压导杆19的下端与拖 轮轴2滑动配合,对拖轮轴2起到导向和限位作用,保证其上下移动的稳定可靠性,减少晃动;通过调压螺钉20对调压导杆19进行调整,再通过调压导杆19限制拖轮轴2的移动幅度,从而满足多样化需求。As shown in Figures 2 and 3, the other side of the lifting block 4 is fixedly provided with a pin 44, the end of the crank 7 is hinged with a vertical pull plate 17 through an axial screw 18, and the lower end of the pull plate 17 is provided with The second vertical strip hole 17a, the outer end of the pin 44 is inserted in the second strip hole 17a; the casing 1 is provided with a vertical pressure regulating rod 19, and the upper end of the pressure regulating rod 19 is provided with a regulating rod. To press the screw 20, the upper end of the tug wheel shaft 2 is provided with a guide hole 21 along its axis, and the lower end of the pressure regulating guide rod 19 is slidably inserted into the guide hole 21. The lower end of the pressure regulating guide rod 19 is slidingly fitted with the tug wheel shaft 2 to guide and limit the tug wheel shaft 2 to ensure the stability and reliability of its up and down movement and reduce shaking; the pressure regulating guide rod 19 is adjusted by the pressure regulating screw 20 Adjust, and then restrict the movement range of the tug shaft 2 through the pressure regulating guide rod 19 to meet the diversified needs.
本文中所描述的具体实施例仅仅是对本实用新型精神作举例说明。本实用新型所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代,但并不会偏离本实用新型的精神或者超越所附权利要求书所定义的范围。The specific embodiments described in this article are merely examples to illustrate the spirit of the present invention. Those skilled in the technical field of the present utility model can make various modifications or additions to the specific embodiments described or substitute similar methods, but they will not deviate from the spirit of the present utility model or surpass the appended claims. The defined range.
尽管本文较多地使用了1、机壳;2、拖轮轴;21、导向孔;3、后拖轮;4、抬升块;41、通孔;42、锁紧孔;43、锁紧螺钉;44、销轴;5、驱动件;51、电磁铁;51a、开口槽;6、杠杆;61、条形孔一;7、曲柄;8、连杆;9、轴位螺钉一;10、轴位螺钉二;11、安装板;12、连接销;13、转轴;14、摆动板;15、顶升销;16、手柄;17、拉板;17a、条形孔二;18、轴位螺钉三;19、调压导杆;20、调压螺钉等术语,但并不排除使用其它术语的可能性。使用这些术语仅仅是为了更方便地描述和解释本实用新型的本质;把它们解释成任何一种附加的限制都是与本实用新型精神相违背的。Although this article mostly uses 1. housing; 2. tug shaft; 21, guide hole; 3. rear tug; 4. lifting block; 41, through hole; 42, locking hole; 43, locking screw; 44 5. Pin shaft; 5. Driver; 51, electromagnet; 51a, open slot; 6. lever; 61, strip hole one; 7, crank; 8. connecting rod; 9. axial screw one; 10. axial position Screw two; 11. Mounting plate; 12. Connecting pin; 13. Rotating shaft; 14. Swing plate; 15. Lifting pin; 16. Handle; 17, pull plate; 17a. Strip hole two; 18. Axial screw three ; 19. Pressure regulating guide rod; 20, pressure regulating screw and other terms, but the possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; to interpret them as any additional restriction is contrary to the spirit of the utility model.

Claims (7)

  1. 一种缝纫机上的自动抬后拖轮结构,缝纫机包括机壳(1)、竖向设置在所述机壳(1)上且能够上下移动的拖轮轴(2)以及固设在所述拖轮轴(2)下端的后拖轮(3),其特征在于,所述自动抬后拖轮结构包括固设在所述拖轮轴(2)上的抬升块(4)以及固设在所述机壳(1)外侧面上的驱动件(5),所述机壳(1)外侧面上分别铰接有能够摆动的杠杆(6)和能够摆动的曲柄(7),所述杠杆(6)的一端与所述曲柄(7)的一端通过连杆(8)相连接,所述杠杆(6)的另一端与所述驱动件(5)的输出轴相连接,所述曲柄(7)的另一端与所述抬升块(4)相连接且所述曲柄(7)摆动能够带动所述抬升块(4)上下移动。An automatic rear-lifting tug wheel structure on a sewing machine. The sewing machine includes a casing (1), a tug shaft (2) vertically arranged on the casing (1) and capable of moving up and down, and a tug shaft (2) fixed on the tug shaft ( 2) The rear tugboat (3) at the lower end, characterized in that the automatic rear tugboat structure includes a lifting block (4) fixed on the tug wheel shaft (2) and a lifting block (4) fixed on the casing (1) The driving member (5) on the outer side of the casing (1) is hinged on the outer side of the casing (1) with a swingable lever (6) and a swingable crank (7) respectively. One end of the lever (6) is connected to the One end of the crank (7) is connected by a connecting rod (8), the other end of the lever (6) is connected with the output shaft of the drive member (5), and the other end of the crank (7) is connected with the The lifting block (4) is connected and the crank (7) can drive the lifting block (4) to move up and down.
  2. 根据权利要求1所述的缝纫机上的自动抬后拖轮结构,其特征在于,所述杠杆(6)和曲柄(7)间隔设置且均位于所述机壳(1)外侧面靠近上端位置,所述杠杆(6)呈长条形,所述曲柄(7)呈L型或V型,所述杠杆(6)的中部以及曲柄(7)的中部通过轴位螺钉一(9)铰接在所述机壳(1)上,所述连杆(8)的两端通过轴位螺钉二(10)分别与所述杠杆(6)和曲柄(7)的端部相铰接。The automatic rear-lifting tug structure on the sewing machine according to claim 1, characterized in that the lever (6) and the crank (7) are arranged at intervals and are both located on the outer side of the casing (1) near the upper end, so The lever (6) is elongated, the crank (7) is L-shaped or V-shaped, and the middle part of the lever (6) and the middle part of the crank (7) are hinged to the On the casing (1), the two ends of the connecting rod (8) are respectively hinged with the ends of the lever (6) and the crank (7) through two axial screws (10).
  3. 根据权利要求2所述的缝纫机上的自动抬后拖轮结构,其特征在于,所述驱动件(5)为电磁铁(51),所述电磁铁(51)的壳体通过安装板(11)固设在所述机壳(1)的侧面,所述电磁铁(51)的输出轴朝向缝纫机的机头,所述电磁铁(51)的输出轴具有开口槽(51a),所述杠杆(6)的一端插入所述开口槽(51a)内且该端端部具有沿杠杆(6)长度方向的条形孔一(61),所述电磁铁(51)的输出轴上设有连接销(12)且所述连接销(12)的内端伸入到所述开口槽(51a)内并穿过所述杠杆(6)的条形孔一(61)。The automatic rear-lifting tug structure on the sewing machine according to claim 2, wherein the driving member (5) is an electromagnet (51), and the housing of the electromagnet (51) passes through the mounting plate (11) Fixed on the side of the casing (1), the output shaft of the electromagnet (51) faces the head of the sewing machine, the output shaft of the electromagnet (51) has an open slot (51a), and the lever ( 6) One end is inserted into the opening slot (51a) and the end has a strip hole (61) along the length of the lever (6), and the output shaft of the electromagnet (51) is provided with a connecting pin (12) And the inner end of the connecting pin (12) extends into the opening groove (51a) and passes through the strip hole (61) of the lever (6).
  4. 根据权利要求1或2或3或4所述的缝纫机上的自动抬后拖轮结构,其特征在于,所述抬升块(4)靠近所述调压导杆(19) 的上端,所述抬升块(4)上开设有竖向的通孔(41),所述调压导杆(19)的上端插设在所述通孔(41)内,所述抬升块(4)的一侧开设有与所述通孔(41)相连通的锁紧孔(42),所述锁紧孔(42)内螺接有能够抵靠在所述调压导杆(19)上端外周面上的锁紧螺钉(43)。The automatic rear-lifting tug structure on the sewing machine according to claim 1 or 2 or 3 or 4, wherein the lifting block (4) is close to the upper end of the pressure regulating guide rod (19), and the lifting block (4) A vertical through hole (41) is opened on the upper end, the upper end of the pressure regulating guide rod (19) is inserted into the through hole (41), and one side of the lifting block (4) is provided with A locking hole (42) communicated with the through hole (41), the locking hole (42) is screwed with a locking hole capable of abutting against the outer peripheral surface of the upper end of the pressure regulating guide rod (19) Screw (43).
  5. 根据权利要求4所述的缝纫机上的自动抬后拖轮结构,其特征在于,所述机壳(1)上横向设有能够转动的转轴(13),所述转轴(13)的一端伸入所述壳体内且该端固设有摆动板(14),所述摆动板(14)外端连接有与所述抬升块(4)底部相接触的顶升销(15);所述转轴(13)的另一端位于所述壳体外且该端固设有手柄(16)。The automatic rear-lifting tug structure on the sewing machine according to claim 4, characterized in that a rotating shaft (13) is horizontally provided on the casing (1), and one end of the rotating shaft (13) extends into the A swing plate (14) is fixedly arranged in the housing and at this end, and the outer end of the swing plate (14) is connected with a jacking pin (15) that contacts the bottom of the lifting block (4); the rotating shaft (13) The other end of) is located outside the housing and a handle (16) is fixedly arranged on this end.
  6. 根据权利要求5所述的缝纫机上的自动抬后拖轮结构,其特征在于,所述抬升块(4)的另一侧固设有销轴(44),所述曲柄(7)的端部通过轴位螺钉三(18)铰接有竖向的拉板(17),所述拉板(17)的下端开设有竖向的条形孔二(17a),所述销轴(44)的外端插设在所述条形孔二(17a)内。The automatic rear-lifting tug structure on the sewing machine according to claim 5, characterized in that the other side of the lifting block (4) is fixedly provided with a pin (44), and the end of the crank (7) passes Axial screw three (18) is hinged with a vertical pull plate (17), the lower end of the pull plate (17) is provided with a vertical strip hole two (17a), the outer end of the pin shaft (44) Inserted in the second strip hole (17a).
  7. 根据权利要求5所述的缝纫机上的自动抬后拖轮结构,其特征在于,所述机壳(1)上设有竖向的调压导杆(19),所述调压导杆(19)的上端设有调压螺钉(20),所述拖轮轴(2)的上端开设有沿其轴线的导向孔(21),所述调压导杆(19)的下端滑动插设在所述导向孔(21)内。The automatic rear-lifting tug structure on the sewing machine according to claim 5, characterized in that, the casing (1) is provided with a vertical pressure regulating guide rod (19), the pressure regulating guide rod (19) The upper end of the pressure regulating screw (20) is provided with a pressure regulating screw (20), the upper end of the tug shaft (2) is provided with a guide hole (21) along its axis, and the lower end of the pressure regulating guide rod (19) is slidably inserted in the guide Inside the hole (21).
PCT/CN2020/109542 2019-09-21 2020-08-17 Automatic rear dragging wheel lifting structure on sewing machine WO2021052081A1 (en)

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JPH09158016A (en) * 1995-12-12 1997-06-17 Hiroshi Koyakata Sewing machine
CN103668811A (en) * 2013-12-31 2014-03-26 浙江宝石机电股份有限公司 Rear towing wheel device for sewing machine
CN103696151A (en) * 2013-12-31 2014-04-02 浙江宝石机电股份有限公司 Rear puller device for sewing machines
CN204174395U (en) * 2014-10-31 2015-02-25 浙江美机缝纫机有限公司 Flat seam machine automatic needle-foot-lifting mechanism
CN106637725A (en) * 2016-12-01 2017-05-10 宁波卡维自动化科技有限公司 Dragging wheel lifting device of automatic template sewing machine
CN107237055A (en) * 2017-08-09 2017-10-10 浙江中捷缝纫科技有限公司 A kind of presser foot of sewing machine
CN208486043U (en) * 2018-07-13 2019-02-12 温州东廷服饰有限公司 A kind of spininess chain type left front all-in-one machine
CN110004602A (en) * 2019-04-16 2019-07-12 杰克缝纫机股份有限公司 Presser foot lifter and lift rear dragging wheel construction on a kind of sewing machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09158016A (en) * 1995-12-12 1997-06-17 Hiroshi Koyakata Sewing machine
CN103668811A (en) * 2013-12-31 2014-03-26 浙江宝石机电股份有限公司 Rear towing wheel device for sewing machine
CN103696151A (en) * 2013-12-31 2014-04-02 浙江宝石机电股份有限公司 Rear puller device for sewing machines
CN204174395U (en) * 2014-10-31 2015-02-25 浙江美机缝纫机有限公司 Flat seam machine automatic needle-foot-lifting mechanism
CN106637725A (en) * 2016-12-01 2017-05-10 宁波卡维自动化科技有限公司 Dragging wheel lifting device of automatic template sewing machine
CN107237055A (en) * 2017-08-09 2017-10-10 浙江中捷缝纫科技有限公司 A kind of presser foot of sewing machine
CN208486043U (en) * 2018-07-13 2019-02-12 温州东廷服饰有限公司 A kind of spininess chain type left front all-in-one machine
CN110004602A (en) * 2019-04-16 2019-07-12 杰克缝纫机股份有限公司 Presser foot lifter and lift rear dragging wheel construction on a kind of sewing machine

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