CN209584549U - The lower head system of sewing machine - Google Patents

Abstract

The utility model discloses a kind of lower head systems of sewing machine, including saving component (1) and rotary components (2) under head, it is characterized in that, saving component (1) under the head includes by the rotatably supported lower section casing (001) of the rotary components (2)；It is equipped with trimming motor (004) in the installation cavity of lower section casing (001) lower part, the left side or right side of the lower section casing (001) are equipped with lower spindle motor (003).In this way, the input shaft of motor shaft and thread cutting mechanism each may lie in casing rear, the movement of thread cutting mechanism can be directly realized by bar group, structure is simple, and the movement of bar group is unrestricted, and installation and debugging are also more convenient.

Description

The lower head system of sewing machine

Technical field

The utility model relates to technical field of sewing equipment more particularly to a kind of lower head systems of sewing machine.

Background technique

Sewing machine is important sewing device, in the complicated style of sewing, can generate the case where sewing towards any direction, Sewing towards different directions can be generated along two kinds of stitching appearances of suture mark and backward stitch, the sewing quality of both stitching appearances It is different.

Wherein, not only appearance is poor for backward stitch, and upper thread can generate loose twist, suture strength decline, and breakage ratio improves, drop Low sewing quality.

Further, since existing lower spindle motor is mounted below casing, and trimming motor is mounted on cabinet sides, in this way meeting Casing will be penetrated by making the bar group of common dise knife thread cutting mechanism, cause bar group space limited, and casing structure design is complicated, peace Adjustment examination is also inconvenient.

Utility model content

The purpose of the utility model is to provide a kind of lower head systems of sewing machine, and structure is simple, and the movement of bar group is unrestricted, Installation and debugging are also more convenient.

To achieve the above object, the utility model provides a kind of lower head system of sewing machine, including section group under head Part and rotary components, section component includes by the rotatably supported lower section casing of the rotary components under the head；The lower section machine Trimming motor trimming motor is equipped in the installation cavity of the lower part of shell, the left side or right side of the lower section casing are equipped with lower axle electricity Machine.

Preferably, the trimming motor drives trimming component, the bar by being set to the bar group at the lower section casing rear Group includes sequentially connected trimming rocking bar, trimming connecting rod and trimming crank.

Preferably, the lower spindle motor passes through small synchronizing wheel, the big synchronizing wheel and two set on the lower section casing rear Synchronous belt between person drives rotating shuttle assembly rotation.

Preferably, the rotary components include the lower section base plate being fixedly connected with the rack of sewing machine, and rotation set is set vertically It sets and is supported by the lower section base plate rotation, and its periphery is fixedly connected with gear wheel；The lower section base plate is also equipped with The motor being vertically arranged, to drive the pinion rotation engaged with the gear wheel；The lower section casing is installed on the rotation set Top.

Preferably, the lower section base plate is fixedly installed with gear-box, and the gear wheel and the pinion gear are located at described In gear-box.

Preferably, the rotation set passes through the gear-box and is equipped with Upper shaft sleeve and Lower shaft sleeve, the Upper shaft sleeve between the two The roof and bottom wall of the gear-box are respectively and fixedly installed to the Lower shaft sleeve.

Preferably, the bottom of the rotation set is also fixedly connected with the slip-ring rotor being coaxially arranged, the slip-ring rotor Lower rotation is connected with coaxially setting slip ring stator；The slip ring stator is fixed by slip ring check plate and the gear-box Connection.

Preferably, the bottom of the rotation set is equipped with reducing sleeve, and is connect by the reducing sleeve with the slip-ring rotor.

Preferably, the bottom of the gear-box is also equipped with retarder mounting base, and retarder is set to the retarder peace Fill the bottom of seat.

Preferably, the retarder mounting base have frame structure, at the top and bottom of frame space in be arranged shaft coupling Device.

The lower head system of sewing machine provided by the utility model, including component and rotary components are saved under head, it is described It includes by the rotatably supported lower section casing of the rotary components that component is saved under head；In the installation cavity of the lower part of the lower section casing Equipped with trimming motor, the left side or right side of the lower section casing are equipped with lower spindle motor, the trimming motor and the lower axle The arbor of motor is respectively positioned on the lower section casing rear, in this way, the input shaft of motor shaft and thread cutting mechanism is all located at casing rear, The movement of thread cutting mechanism can be directly realized by bar group, structure is simple, and the movement of bar group is unrestricted, and installation and debugging are also more square Just.

In a specific embodiment, the rotary components include the lower section pedestal being fixedly connected with the rack of sewing machine Plate, rotation set is vertically arranged and by the lower section base plate rotation support, and its periphery is fixedly connected with gear wheel；The lower section base Seat board is also equipped with the motor being vertically arranged, to drive the pinion rotation engaged with the gear wheel；The lower section casing peace Top loaded on the rotation set.Therefore, the lower section casing can be sent out relative to the lower section base plate driven by a moto Raw rotation, therefore component can be saved under rotating head when sewing backstitches direction, protect the mutual alignment of eedle and suture always State when along seam is held, so as to avoid backward stitch is generated, improves the quality of sewing.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also Other attached drawings can be obtained according to the attached drawing of offer.

Fig. 1 is provided the overall structure diagram of the lower head system of sewing machine by the utility model；

Fig. 2 is the schematic perspective view for saving component first angle in Fig. 1 under head；

Fig. 3 is the schematic perspective view for saving component second angle in Fig. 1 under head；

Fig. 4 is the schematic perspective view of rotary components in Fig. 1；

Fig. 5 is the schematic cross-sectional view of rotary components in Fig. 1.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model core is to provide a kind of lower head system of sewing machine, and structure is simple, and the movement of bar group is unrestricted, peace Adjustment examination is also more convenient.

Fig. 1 to Fig. 3 is please referred to, Fig. 1 is illustrated by the overall structure for the lower head system that the utility model provides sewing machine Figure；Fig. 2 is the schematic perspective view for saving component first angle in Fig. 1 under head；Fig. 3 is to save component second in Fig. 1 under head The schematic perspective view of angle.

In the first specific embodiment, the lower head system of sewing machine provided by the utility model is wrapped on the whole It includes and saves component 1 and rotary components 2 under head, the other structures of sewing machine are since, without direct correlation, this is practical with the utility model It is novel no longer to refer to.

It includes lower section casing 001 that component 1 is saved under head, and lower section casing 001 can be relative to the gantry rotation of sewing machine.

Lower section casing 001 is equipped with lower spindle motor 003, and lower spindle motor 003 drives 002 turn of rotating shuttle assembly by synchronous belt group It moves, and lower spindle motor 003 is located at the side of lower section casing 001, i.e. left side or right side.Lower section casing 001 is additionally provided with location hook Component 005.

Lower section casing 001 is also equipped with trimming motor 004, and trimming motor 004 drives the relevant action of trimming component 006, And trimming motor 004 is located in the installation cavity of the lower part of lower section casing 001.

Trimming motor 004 specifically can drive trimming component 006 by being set to the bar group at lower 001 rear of section casing, described Bar group may include being sequentially connected the trimming rocking bar 010, trimming connecting rod 011 and trimming crank 012 connect.

Lower spindle motor 003 passes through small synchronizing wheel 007, the big synchronizing wheel 009 set on lower 001 rear of section casing, and installation Synchronous belt 008 between small synchronizing wheel 007 and big synchronizing wheel 009 drives rotating shuttle assembly 002 to rotate.

The lower head system of sewing machine provided by the utility model, including component and rotary components are saved under head, it is described It includes by the rotatably supported lower section casing of the rotary components that component is saved under head；In the installation cavity of the lower part of the lower section casing Equipped with trimming motor, the left side or right side of the lower section casing are equipped with lower spindle motor, in this way, motor shaft and thread cutting mechanism Input shaft is all located at casing rear, can directly by bar group realize thread cutting mechanism movement, structure is simple, bar group movement not by Limit, installation and debugging are also more convenient.

Fig. 4 and Fig. 5 are please referred to, Fig. 4 is the schematic perspective view of rotary components in Fig. 1；Fig. 5 is rotary components in Fig. 1 Schematic cross-sectional view.

It in another embodiment specific implementation mode, can mounting means to lower section casing 001 be further is improved.

Lower section base plate 101 can be fixedly connected in the rack of sewing machine, and by the rotatable twelve Earthly Branches of lower section base plate 101 Rotation set 121 is supportted, the generally vertical setting of rotation set 121, periphery is fixedly connected with the gear wheel 123 of synchronous rotation.Lower section machine Shell 001 can be fixedly mounted on the top of rotation set 121 by bolt etc..

Motor 107 is also equipped on lower section base plate 101, the generally vertical setting of motor 107 specifically can be electric rotating Machine or other power parts.

Motor 107 drives pinion gear 103 to rotate, and pinion gear 103 is meshed with gear wheel 123, so as to by motor 107 Rotation set 121 is driven, and then drives its top peace to hold section casing 001 and rotates.The above structure is main group of rotary components 2 At part.

Therefore, lower section casing can be rotated relative to lower section base plate driven by a moto, so as to stitch It threads and saves component under rotating head when backstitching direction, state when being always held at the mutual alignment of eedle and suture along seam, from And generation backward stitch is avoided, improve the quality of sewing.

The structure of rotary components 2 can also be further improved.

For example, gear-box 112 can also be fixedly mounted on lower section base plate 101, and by gear wheel 123 and pinion gear 103 are all set in gear-box 112.

Gear wheel 123 and pinion gear 103 are arranged in gear-box 112, and lubrication and dust-proof effect are more preferable, and operation more may be used It leans on.

Can also make rotation set 121 vertically pass through gear-box 112, and between rotation set 121 and gear-box 112 be arranged axle sleeve or Person's bearing.For example, Upper shaft sleeve 122 is arranged between rotation set 121 and the roof of gear-box 112, in rotation set 121 and gear-box 112 Bottom wall between be arranged Lower shaft sleeve 124.In addition, positioning retainer ring 125 can also be arranged in the periphery of rotation set 121.

The bottom of rotation set 121 can also be fixedly connected with slip-ring rotor 127, the two coaxial arrangement；The bottom of slip-ring rotor 127 It can also be rotatablely connected slip ring stator 108, slip-ring rotor 127 and slip ring stator 108 are equally coaxially disposed.

Slip ring stator 108 can also be fixedly connected by slip ring check plate with gear-box 112；The slip ring check plate can be with Including the first plate body 109 and the second plate body 110 for holding slip ring stator 108 tightly from two sides.

Further, it is also possible to which reducing sleeve 126 is arranged in the bottom of rotation set 121, and makes rotation set 121 by reducing sleeve 126 and slide Rotor 127 connects.

Retarder mounting base 105 can also be installed in the bottom of gear-box 112, and retarder 106 is set to retarder The bottom of mounting base 105.

Retarder mounting base 105 further can be set as frame structure, so as to the frame at the top and bottom of it Shaft coupling 104 is set in space.

The setting of the above rotation set 121 and its related accessory, the rotation of lower section casing 001 can be made by simple structure It is reliable and stable to turn over Cheng Gengwei.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.

The lower head system of sewing machine provided by the utility model is described in detail above.It is used herein Specific case is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help to manage Solve the method and its core concept of the utility model.It should be pointed out that for those skilled in the art, not Under the premise of being detached from the utility model principle, several improvements and modifications can be made to this utility model, these improve and repair Decorations are also fallen into the protection scope of the utility model claims.

Claims (10)

1. a kind of lower head system of sewing machine, including component (1) and rotary components (2) are saved under head, which is characterized in that it is described It includes by the rotatably supported lower section casing (001) of the rotary components (2) that component (1) is saved under head；The lower section casing (001) It is equipped with trimming motor (004) in the installation cavity of lower part, the left side or right side of the lower section casing (001) are equipped with lower spindle motor (003)。

2. the lower head system of sewing machine as described in claim 1, which is characterized in that the trimming motor (004) is by setting Bar group in lower section casing (001) rear drives trimming component (006), and the bar group includes sequentially connected trimming rocking bar (010), trimming connecting rod (011) and trimming crank (012).

3. the lower head system of sewing machine as claimed in claim 2, which is characterized in that the lower spindle motor (003) is by setting In the small synchronizing wheel (007) at lower section casing (001) rear, big synchronizing wheel (009) and synchronous belt (008) between the two Drive rotating shuttle assembly (002) rotation.

4. the lower head system of sewing machine as described in any one of claims 1-3, which is characterized in that the rotary components (2) Including the lower section base plate (101) that the rack with sewing machine is fixedly connected, rotation set (121) is vertically arranged and by the lower section pedestal Plate (101) rotation support, and its periphery is fixedly connected with gear wheel (123)；The lower section base plate (101) is also equipped with vertically The motor (107) of setting, to drive the pinion gear (103) engaged with the gear wheel (123) rotation；The lower section casing (001) it is installed on the top of the rotation set (121).

5. the lower head system of sewing machine as claimed in claim 4, which is characterized in that the lower section base plate (101) is fixed It is equipped with gear-box (112), the gear wheel (123) and the pinion gear (103) are located in the gear-box (112).

6. the lower head system of sewing machine as claimed in claim 5, which is characterized in that the rotation set (121) passes through the tooth Roller box (112) and it is equipped with Upper shaft sleeve (122) and Lower shaft sleeve (124), the Upper shaft sleeve (122) and the Lower shaft sleeve between the two (124) roof and bottom wall of the gear-box (112) are respectively and fixedly installed to.

7. the lower head system of sewing machine as claimed in claim 6, which is characterized in that the bottom of the rotation set (121) is also solid The slip-ring rotor (127) being coaxially arranged is connected calmly, and the lower rotation of the slip-ring rotor (127), which is connected with, coaxially to be set Set slip ring stator (108)；The slip ring stator (108) is fixedly connected by slip ring check plate with the gear-box (112).

8. the lower head system of sewing machine as claimed in claim 7, which is characterized in that the bottom of the rotation set (121) is equipped with Reducing sleeve (126), and connect by the reducing sleeve (126) with the slip-ring rotor (127).

9. the lower head system of sewing machine as claimed in claim 5, which is characterized in that the bottom of the gear-box (112) is also It is equipped with retarder mounting base (105), retarder (106) is set to the bottom of the retarder mounting base (105).

10. the lower head system of sewing machine as claimed in claim 9, which is characterized in that retarder mounting base (105) tool Have frame structure, at the top and bottom of frame space in be arranged shaft coupling (104).