CN115897088A - Sewing machine - Google Patents

Abstract

The invention relates to the technical field of sewing machines, and provides a sewing machine.A lubricating cavity is arranged on the left side of a base and comprises a first cavity and a second cavity which are adjacently arranged and communicated; a feed lifting shaft of the feed lifting mechanism penetrates through the second containing cavity, and a driving gear is sleeved on the feed lifting shaft in the second containing cavity; a rotating shuttle shaft of the rotating shuttle mechanism penetrates through the first accommodating cavity, and a driven gear is sleeved on the rotating shuttle shaft in the first accommodating cavity; the driving gear is meshed with the driven gear, so that the feed lifting shaft drives the rotating shuttle shaft; a shaft sleeve is arranged on the side wall of the first containing cavity for the rotating shuttle shaft to penetrate through, and the rotating shuttle shaft is rotatably arranged in the shaft sleeve; an oil inlet channel and an oil outlet channel are arranged in the shaft sleeve; the oil inlet channel is communicated with an oil delivery pipe of the oil supply assembly; the oil outlet channel is communicated with an oil return pipe of the oil supply assembly; the rotating shuttle shaft is matched with the oil supply assembly to convey oil in the oil inlet channel to the oil outlet channel; the oil outlet channel is provided with a bypass channel which is communicated with the lubricating chamber; this ensures that only a little lubricating oil is supplied at a time, avoiding an excessive supply of lubricating oil.

Description

Sewing machine

Technical Field

The invention relates to the technical field of textile equipment, in particular to a sewing machine.

Background

Sewing machine equipment has become an indispensable technology in the textile field. The existing sewing machine comprises a machine head and a base, wherein the base is provided with a complex transmission mechanism and a lubricating system, the lubricating system is used for providing lubricating oil for the transmission mechanism, and the lubricating oil is used for reducing the abrasion between mechanical transmissions.

In the prior art, the functional block division and the layout planning of the transmission structure at the lower part of the sewing machine base are relatively extensive and are not designed in a fine mode. In terms of development trend, functions required to be carried by the sewing machine are more and more diversified, so that the transmission structure of the sewing machine is more and more complex, and a more complex oil lubricating system needs to be matched. Therefore, it is necessary to perform functional block division on the sewing machine base again, optimize the transmission structure design and the lubrication system, and reasonably allocate the space at the lower part of the base, so as to facilitate installation of a corresponding automation structure or installation of a direct drive motor and the like.

Disclosure of Invention

The invention aims to provide a sewing machine with simple structure and low oil consumption.

The purpose of the invention is realized as follows: a sewing machine comprises a base, wherein a feed lifting mechanism, a cloth feeding mechanism, a rotating shuttle mechanism and an oil supply assembly are arranged on the base; a lubricating cavity is arranged on the left side of the base and comprises a first accommodating cavity and a second accommodating cavity; the first accommodating cavity and the second accommodating cavity are adjacently arranged and communicated; a tooth lifting shaft of the tooth lifting mechanism penetrates through the second accommodating cavity; a driving gear is sleeved on the feed lifting shaft in the second containing cavity; a rotating shuttle shaft of the rotating shuttle mechanism penetrates through the first accommodating cavity; a driven gear is sleeved on the rotating shuttle shaft in the first accommodating cavity; the driving gear and the driven gear are meshed to rotate, so that the feed lifting shaft drives the rotating shuttle shaft; a shaft sleeve is arranged on the side wall of the first containing cavity for the rotating shuttle shaft to penetrate through, and the rotating shuttle shaft is rotatably arranged in the shaft sleeve; an oil inlet channel, an oil outlet channel and an oil delivery assembly are arranged in the shaft sleeve; the oil inlet channel is communicated with an oil feeding pipe of the oil supply assembly; the oil outlet channel is communicated with an oil return pipe of the oil supply assembly; the rotating shuttle shaft is matched with the oil conveying assembly to convey oil in the oil inlet channel to the oil outlet channel; the oil outlet channel is provided with an auxiliary channel, and the auxiliary channel is communicated with the lubricating cavity.

According to an embodiment of the invention, the side wall of the lubricating chamber is matched with the front side wall of the base to form a second mounting groove; a cloth feeding motor of the cloth feeding mechanism is arranged in the second mounting groove; the cloth feeding motor is characterized in that a motor main body of the cloth feeding motor is arranged in a suspended mode, so that the first containing cavity extends forwards to the position above the cloth feeding motor.

According to an embodiment of the invention, the oil supply assembly comprises an oil box, and the oil supply pipe and the oil return pipe are arranged on one side of the oil box; an oil box mounting groove is formed in the right side of the base, and the oil box is mounted in the oil box mounting groove; the oil box is fixed on the base, a cover plate is arranged on the oil box, and the oil box and the cover plate form an oil storage cavity; an oil pointer is arranged in the oil storage cavity and floats above oil in the oil storage cavity; the oil pointer is provided with an indicating rod, and the indicating rod extends upwards and sequentially penetrates through the through holes in the cover plate and the base.

According to an embodiment of the invention, a placing groove is arranged in the oil box and used for placing the oil pointer; the cover plate is provided with a guide column, the oil pointer is provided with a buoy, and the guide column is provided with a buoy accommodating part capable of accommodating the buoy and an indicating rod guide part for guiding the indicating rod; the guide post is hollow inside, and the height of the buoy accommodating part is larger than or equal to that of the buoy.

According to an embodiment of the present invention, the oil box is provided with an oil feeding groove and an oil feeding hole, the oil feeding groove is arranged at the bottom of the oil box, the oil feeding hole is located at one side of the oil feeding groove, and the oil feeding pipe is connected to the outer side of the oil feeding hole through an oil feeding joint.

According to an embodiment of the present invention, the cloth feeding mechanism further includes: the device comprises a crank, a connecting rod, a rotating shaft, a tooth holder and a feed dog; the crank is rotationally connected with one end of the connecting rod, the rotating shaft is rotationally connected with the other end of the connecting rod, the rotating shaft is rotationally connected to the base, and one end of the tooth holder is rotationally connected with the rotating shaft; the cloth feeding teeth are arranged on the tooth bases; the cloth feeding motor is used for driving the crank, the crank drives the connecting rod to swing, and the connecting rod drives the rotating shaft to rotate; and the tooth holder can be driven by the rotating shaft to move.

According to an embodiment of the present invention, the tooth lifting mechanism further includes: the lifting tooth mechanism comprises a lifting tooth shaft and a synchronous belt, wherein one end of the lifting tooth shaft is connected with the synchronous belt, and the other end of the lifting tooth shaft is rotationally connected with the tooth base; the synchronous belt drives the feed lifting shaft to rotate, and the feed lifting shaft drives one end of the feed lifting block to swing up and down through the eccentric shaft part; the other end of the tooth holder is driven by the rotating shaft to swing back and forth.

According to an embodiment of the invention, the device further comprises a thread trimming and presser foot lifting mechanism, wherein the thread trimming and presser foot lifting mechanism comprises: a first driving device; the base still is equipped with: the first mounting groove is used for mounting the first driving device, the cloth feeding shaft penetrates through the first mounting groove, the first driving device is arranged in the first mounting groove in a suspension mode, and the suspension area is used for avoiding the walking shaft.

According to an embodiment of the present invention, an oil collecting groove is disposed on a side wall of the lubricating chamber away from the first receiving cavity.

According to an embodiment of the present invention, the oil storage tray is provided with an observation window for observing the amount of oil in the lubrication chamber; the oil storage tray is provided with an oil discharge port and an oil filling port.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that:

1. according to the sewing machine provided by the invention, the left side of the base is provided with the lubricating cavity which comprises the first cavity and the second cavity, the side wall of the first cavity, through which the rotating shuttle shaft passes, is provided with the shaft sleeve, the shaft sleeve is internally provided with the oil inlet channel and the oil outlet channel which are respectively connected with the oil feeding pipe and the oil return pipe, the oil outlet channel is provided with the side branch channel and is communicated with the lubricating cavity, the design can drive lubricating oil to enter the rotating shuttle shaft from the oil inlet channel through the rotation of the rotating shuttle shaft and then enter the lubricating cavity through the oil outlet channel, and the mode ensures that only a little lubricating oil is supplied each time and avoids the excessive supply of the lubricating oil; furthermore, the rotating shuttle shaft is rotatably arranged on the shaft sleeve, the shaft sleeve is provided with an oil inlet channel, an oil outlet channel and an oil conveying assembly, oil conveying power is provided through rotation of the rotating shuttle shaft, and redundant oil consumption is further avoided.

2. Further, the motor main body of the cloth feeding motor is arranged in the second mounting groove in a hanging mode, the first containing cavity extends forwards to the position above the cloth feeding motor, the three-dimensional space is reasonably utilized in the mode, and the lubricating cavity can contain the driven gear on the rotating shuttle shaft.

3. Further, still the fuel feeding unit includes the oil box, and the oil pointer in the oil box floats in the fluid top of oil storage intracavity, and the through-hole on apron and the base is upwards stretched out and passed in proper order to the pilot lever on the oil pointer, can learn the oil mass in the oil storage intracavity through the height of observing the pilot lever in base top, and then judge whether refuel and oil discharge.

4. Furthermore, be equipped with the guide post on the apron, the guide post is equipped with buoy housing part and pilot lever guide part, and the pilot lever that the pilot lever guide part can restrict the oil pointer rocks, and when fluid had been full of the back, the buoy can get into buoy housing part, can avoid the buoy upper surface card on the bottom surface of apron, can not accurately reflect the condition of fluid.

5. Furthermore, the oil box is provided with an oil supply groove, so that the lubricating oil has high and low potential energy difference and is automatically collected to the oil supply groove, and the lubricating oil is automatically output to the oil supply pipe through the oil supply hole.

6. The cloth feeding shaft is driven by a single motor, so that the movement of teeth can be controlled more easily, and different stitches can be designed and adjusted according to different requirements; and the transmission structure is simplified, the number of parts is reduced, and the failure rate and the maintenance cost are further reduced. That is to say, the structure that needs lubrication has been reduced, and the space that further can reduce the lubrication chamber has also reduced the oil consumption, has further reduced the cost.

7. The thread cutting and presser foot lifting mechanism is connected with the same driving device, the first driving device is arranged in the first mounting groove in a suspending mode, and the suspended area is used for avoiding the step feeding shaft, so that the space is further reasonably utilized.

8. The lubricating cavity is provided with an oil collecting groove, when the base is overhauled, the base is vertically arranged in the lateral direction, oil in the gear chamber is collected in the oil collecting groove, and oil drainage is more convenient.

Drawings

Fig. 1 is a schematic view showing a structure of a sewing machine according to an embodiment of the present invention.

Fig. 2 is an exploded view of a sewing machine according to an embodiment of the present invention.

Fig. 3 is one of the structural diagrams of the second component in an embodiment of the invention.

Fig. 4 is a second schematic structural diagram of the second component according to the first embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a base region according to an embodiment of the invention.

Fig. 6 is a schematic structural diagram of a base according to an embodiment of the invention.

Fig. 7 is a second schematic structural diagram of a base according to an embodiment of the invention.

Fig. 8 is one of the cross-sectional views of the base region in an embodiment of the invention.

FIG. 9 is a second cross-sectional view of the base region in an embodiment of the invention.

Fig. 10 is a third cross-sectional view of the base region in an embodiment of the invention.

Fig. 11 is a partially enlarged view of fig. 10.

Fig. 12 is another cross-sectional view of the base region in an embodiment of the invention.

Fig. 13 is a schematic structural view of an oil storage assembly and a base in an embodiment of the invention.

Fig. 14 is a schematic structural diagram of an oil storage assembly according to an embodiment of the invention.

Fig. 15 is a schematic structural view of an oil box component in one embodiment of the invention.

Fig. 16 is a schematic view of an exploded structure of an oil container part according to an embodiment of the present invention.

Fig. 17 is a schematic structural diagram of an oil box according to an embodiment of the present invention.

Description of the symbols:

100-a nose area; 200-a base region; 300-a first component; 400-a second component; 500-an oil supply assembly;

210-a base; 310-a first drive; 320-presser foot lifting mechanism; 330-a thread trimming mechanism; 410-a second drive; 420-a cloth feeding mechanism; 430-a rotating shuttle mechanism; 440-a tooth raising mechanism;

211-a lubrication chamber; 2111-first volume; 2112-second volume; 2113-oil trap; 2121-a through hole; 212-an operating platform; 213-a second mounting groove; 214-a first mounting groove; 215-oil box mounting groove; 216-oil return passage; 217-regulating valve; 218-a slow stream block;

421-crank; 422-connecting rod; 423-rotating shaft; 424-dental base; 425-feed dog; 431-driven gear; 432-rotating shuttle shaft; 4321-shuttle supply line; 433-a rotating shuttle part; 434-shaft sleeve; 4341-oil inlet channel; 4342-oil outlet channel; 4343-auxiliary channel; 441-a driving gear; 442-the feed lifting shaft; 443-a synchronous belt; 444-eccentric shaft portion;

50-an oil supply assembly; 51-an oil box member; 510-an oil box; 511-a placement groove; 512-oil supply groove; 513-a collection area; 514-quick oil drain port; 515-a pressure relief vent; 516-oil feed holes; 517-oil return hole; 519-a sealing strip mounting groove; 520-a cover plate; 521-a guide post; 522-oil line leading-out port; 530-oil mark; 540-oil drain cover; 550-a pressure relief cover; 560-oil feed 570-oil return; 580-blocking cover; 590-sealing strip; 52-oil delivery pipe; 53-return pipe; 54-oil storage tray; 541-a viewing window; 542-oil discharge port; 543-oil injection port; 5211-a float receptacle; 5212-indicating rod guide; 500-oil transportation component.

Detailed description of the preferred embodiments

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of a preferred embodiment thereof, taken in conjunction with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front, rear, inner or outer, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.

The invention is further described in the following by way of specific embodiments in conjunction with the following drawings:

referring to fig. 1 to 10, the sewing machine includes a head section 100 and a bed section 200 provided with a bed 210; one side of the base 210 away from the handpiece area 100 is provided with: the first assembly 300, the second assembly 400, and the oil feeding assembly 50; the first assembly 300 includes: a first driving device 310, a presser foot lifting mechanism 320 and a thread trimming mechanism 330; the second assembly 400 includes: a second driving device 410, a cloth feeding mechanism 420, a rotating shuttle mechanism 430 and a tooth lifting mechanism 440; the presser foot lifting mechanism 320 and the thread trimming mechanism 330 are well known in the art and will not be described in detail, and the functions and functions of the cloth feeding mechanism 420, the rotating shuttle mechanism 430 and the thread lifting mechanism 440 are also well known in the art and will not be described in detail.

In this embodiment, it is particularly noted that, referring to fig. 8 and 9, a lubrication chamber 211 is disposed on the left side of the base, and the lubrication chamber 211 includes a first cavity 2111 and a second cavity 2112; the first containing cavity 2111 and the second containing cavity 2112 are adjacently arranged and communicated; a tooth lifting shaft 442 of the tooth lifting mechanism 440 passes through the second accommodating cavity 2112; a driving gear 441 is sleeved on the tooth lifting shaft 442 in the second cavity 2112; the rotating shuttle shaft 432 of the rotating shuttle mechanism 430 passes through the first accommodating cavity 2111; a driven gear 431 is sleeved on the rotating shuttle shaft 432 in the first accommodating cavity 2111; the driving gear 441 and the driven gear 431 are meshed to rotate, so that the feed lifting shaft 442 drives the rotating shuttle shaft 432; referring to fig. 10 and 11, a shaft sleeve 434 is installed on the side wall of the first cavity 2111 for the rotating shuttle shaft 432 to pass through, and the rotating shuttle shaft 432 is rotatably arranged in the shaft sleeve 434; an oil inlet channel 4341, an oil outlet channel 4342 and an oil delivery assembly 500 are arranged in the shaft sleeve 434; the oil inlet channel 4341 is communicated with an oil feed pipe 52 of the oil supply assembly 50; the oil outlet channel 4342 is communicated with an oil return pipe 53 of the oil supply assembly 50; the rotating shuttle shaft 432 and the oil delivery assembly 500 are matched to deliver oil in the oil inlet channel 4341 to the oil outlet channel 4342; the oil outlet channel 4342 is provided with an auxiliary channel 4343, and the auxiliary channel 4343 is communicated with the lubrication chamber 211, so that the oil outlet channel 4342 is communicated with the lubrication chamber 211. The lubrication chamber 211 occupies less space and is capable of lubricating the necessary components, providing space for the rest of the mechanism or for the mounting of the feed motor 410.

Further, referring to fig. 10 and 11, the lubricant oil enters the oil inlet channel 4341 of the shaft sleeve 434 from the oil feeding pipe 52, and is sucked into the oil outlet channel 4342 of the shaft sleeve 434 by the rotation of the rotating shuttle shaft 442 and the cooperation of the oil delivery assembly 500, which provides oil delivery power by the rotation of the rotating shuttle shaft 432, thereby further avoiding excessive oil consumption.

Fig. 12 isbase:Sub>A sectional view taken along the broken linebase:Sub>A-base:Sub>A in fig. 5.

Further, referring to fig. 12, after passing through the oil outlet channel 4342, the lubricating oil flows into the oil return channel 216, the oil return channel 216 is disposed on the base 210, one end of the oil return channel 216 is connected to the oil outlet channel 4342, and the other end is connected to the oil return pipe 53; an adjusting valve 217 is arranged on the side of the oil return channel 216, and the adjusting valve 217 is used for adjusting the flow of the returned lubricating oil entering the oil return pipe 53; a slow flow block 218 is arranged in the oil return channel 216 and close to the oil return pipe 53, liquid lubricating oil can pass through the slow flow block 218, the slow flow block 218 is made of sponge, and the volatilization effect of the lubricating oil is increased at the position to generate atomized lubricating oil; the rotating shuttle shaft 432 is further provided with a rotating shuttle oil supply pipeline 4321, one end of the rotating shuttle oil supply pipeline 4321 is communicated with the oil outlet channel 4342, the lubricating oil is properly retained and atomized in the oil return channel 216 due to the action of the regulating valve 217 and the buffering block 218, and the atomized lubricating oil enters the rotating shuttle oil supply pipeline 4321 to lubricate other parts of the rotating shuttle shaft. The atomization mode prevents liquid lubricating oil from entering the rotating shuttle area, and further prevents cloth from being impregnated.

Referring to fig. 5 to 7, the side wall of the lubrication chamber 211 is engaged with the front side wall of the base 210 to form a second mounting groove 213; the cloth feeding motor 410 of the cloth feeding mechanism 420 is arranged in the second mounting groove 213; referring to fig. 9 and 10, the motor main body of the cloth feeding motor 410 is suspended such that the first chamber 2111 extends forward above the cloth feeding motor 410.

Referring to fig. 2 to 4, the rotating shuttle mechanism 430 includes: the driven gear 431 and the tooth lifting mechanism 440 include: a driving gear 441, a driven gear 431 and the driving gear 441 are in meshing transmission, and the tooth lifting mechanism 440 transmits power to the rotating shuttle mechanism 430 through the two gears; the second driving device 410 provides a driving force to the cloth feeding mechanism 420; the cloth feeding mechanism 420 includes: a crank 421, a connecting rod 422, a rotating shaft 423, a tooth holder 424 and a feed dog 425; the crank 421 is rotatably connected with one end of the connecting rod 422, the rotating shaft 423 is rotatably connected with the other end of the connecting rod 422, the rotating shaft 423 is rotatably connected to the base 210, and one end of the tooth holder 424 is rotatably connected with the rotating shaft 423; the feed dog 425 is placed on the dental base 424; the second driving device 410 is used for driving the crank 421, the crank 421 drives the connecting rod 422 to swing, and the connecting rod 423 drives the rotating shaft 423 to rotate; the tooth holder 424 is moved by the rotation shaft 423.

The feed lifting mechanism 440 further comprises: the driving gear 441 is arranged on the tooth lifting shaft 442, one end of the tooth lifting shaft 442 is connected with the synchronous belt 443, and the other end of the tooth lifting shaft 442 is rotatably connected with the other end of the tooth holder 424; the synchronous belt 443 drives the tooth lifting shaft 442 to rotate, and the step conveying shaft 422 drives the tooth holder 424 to swing; that is, one end of the tooth holder 424 is connected to the rotating shaft 423, the other end is connected to the tooth lifting shaft 442, and the tooth holder 424 forms a cloth feeding track under the combined action of the rotating shaft 423 and the tooth lifting shaft 442.

Further, referring to fig. 3 and 4, the feed lifting shaft 442 drives one end of the tooth holder 424 to swing up and down through the eccentric shaft 444; the other end of the tooth holder 424 is driven by the rotating shaft 423 to swing back and forth.

In actual work, the track of the feed dog can be adjusted more conveniently according to different requirements. And the transmission structure is simplified, the number of parts is reduced, and the failure rate and the maintenance cost are further reduced. And the structure that needs lubrication has been reduced, and the space that further can reduce lubricated cavity has also reduced the oil consumption, has further reduced the cost.

In an embodiment of the present invention, the first driving device 310 and the second driving device 410 may be servo motors, but the present invention is not limited thereto.

Referring to fig. 2, the sewing machine further includes: an oil supply unit 50; the oil supply unit 50 includes: an oil tank 510 and an oil storage tray 54; the oil box 510 delivers the lubricating oil to the lubricating chamber 211; the lubrication chamber 211 is an accommodating chamber with an opening at one end, the oil storage tray 540 covers the opening of the lubrication chamber 211, and the oil storage tray 540 is used for storing lubricating oil. The oil supply unit 50 further includes: a feed oil pipe 52 and a return oil pipe 53, the feed oil pipe 52 being used to supply oil to the lubrication chamber 211. The oil box and the lubricating cavity are designed in a split mode, namely the oil box is arranged independently, so that the phenomenon that excessive lubricating oil soaks the rotating shuttle gear and the cloth feeding gear of the transmission gear and can generate resistance to the movement of the gear is avoided. The oil box 510 is arranged at one corner of the base, so that the occupied area is reduced on the basis of ensuring lubrication, and the installation of a synchronous belt, a feed lifting shaft, a thread cutting mechanism and a presser foot lifting mechanism is not influenced.

Referring to fig. 5 to 7, the base 210 is further provided with a first mounting groove 214, a second mounting groove 413 and an oil box mounting groove 215, the first mounting groove 214 is used for mounting the first driving device 310, the cloth feeding shaft 425 passes through the first mounting groove 214, that is, the first driving device 310 is suspended in the first mounting groove 214, and the suspended area is used for avoiding the cloth feeding shaft 425; a second mounting groove 213 for mounting a second driving device 410; the oil feed pipe 520 passes through the second installation groove 213 to be communicated with the first chamber 2111, and the connection position is positioned on the side wall of the first chamber 2111; the oil return pipe 530 is used for returning the excess lubricating oil in the lubricating chamber 211 to the oil box 510, and the oil return pipe is communicated with the first cavity 2111, and the connection position is located at the bottom wall of the first cavity 2111, that is, a cavity is formed between the second driving device 410 and the bottom of the second mounting groove 213, and the inner oil feed pipe 520 passes through the cavity and is communicated with the first cavity 2111.

In an embodiment of the invention, the second driving device is a motor, and the main body of the motor is a cube, and the length of the motor is 60mm, the width of the motor is 60mm, and the height of the motor is 96 mm.

Referring to fig. 8 and 9, an operation platform 212 is disposed on a side of the base 210 close to the handpiece region 100, and a distance between the first cavity 2111 and the operation platform 212 is smaller than a distance between the second driving device 410 and the operation platform 212. That is, the second mounting groove 213 has a shape with a large opening and a small bottom; the lubrication chamber 211 has a shape with a small opening and a large inner space; the design makes the space more compact, and the space is utilized to the maximum extent.

Referring to fig. 1 and 5, the oil storage tray 540 is provided with an observation window 541 for observing the amount of oil in the lubrication chamber 211. The oil quantity consumption can be observed, and the oil can be filled in time. The oil storage tray 540 is provided with an oil outlet 542 and an oil filling opening 543; when the oil amount in the lubricating cavity is excessive, the oil discharge port can be opened to discharge oil, so that excessive lubricating oil is further avoided, and the transmission gear rotating shuttle gear and the cloth feeding gear are further soaked, and resistance is generated on the movement of the gears; oiling mouth 543, can be for lubricating the indoor oiling of cavity, use for the first time, the wearing and tearing to drive gear when having no lubricating oil in having avoided lubricated cavity 211. Furthermore, the oil injection port and the oil discharge port are provided with screw caps, and the oil injection port or the oil discharge port can be opened by screwing the screw caps; the observation window 541 is a transparent block fixed on the oil storage tray 540.

Referring to fig. 7, an oil collecting groove 2113 is formed in the side wall of the lubricating chamber 211, which is far away from the first accommodating cavity 2111, when the base is overhauled, the base is laterally and vertically placed, and oil in the gear chamber is collected in the oil collecting groove, so that oil drainage is more convenient. The oil drain 542 is provided at the oil sump 2113, and oil can be drained by collecting the oil in the oil sump and opening the oil drain 542.

Referring to fig. 13 to 17, the oil supply unit 50 includes: an oil box member 51, an oil feed pipe 52, and an oil return pipe 53; the oil box part 51 is fixed on the base 210 and comprises an oil box 510, a cover plate 520 and an oil pointer 530; the cover plate 520 is attached to the opening of the oil box 510 to form an oil storage cavity; the oil delivery pipe 520 is arranged at one side of the oil box 510 and communicated with the oil storage cavity, and is used for delivering oil to the outside; the oil return pipe 530 is disposed at one side of the oil box 510 and communicated with the oil storage chamber, and is used for receiving the returned oil; the oil return pipe 530 is positioned on the upper side of the oil feed pipe 520; the oil pointer 530 is arranged in the oil storage cavity and floats above the oil liquid; the oil pointer 570 is provided with an indication rod 531, and the indication rod 531 extends upwards and passes through the cover 560 and the through hole 2121 of the base 210 in sequence.

Referring to fig. 16 and 17, a seating groove 511 for seating an oil pointer 530 is provided inside the oil box 510. The cover 520 is provided with a guide post 521, the oil pointer 530 is provided with a float 532, and the guide post 521 has a float accommodating portion 5211 for accommodating the float 532 and an indication rod guide portion 5212 for guiding the indication rod 531. The guide column 521 is hollow inside, and the height H1 of the float receptacle 5211 is greater than or equal to the height H2 of the float 532. Oil box 510 is provided with oil feed groove 512 and oil feed hole 516, oil feed groove 512 is provided at the bottom of oil box 510, oil feed hole 516 is located at one side of oil feed groove 512, and oil feed pipe 52 is connected to the outside of oil feed hole 516 via oil feed joint 560. The oil box member 51 further includes: a sealing strip 590; a sealing strip 590 is arranged between the oil box 510 and the cover plate 520, and the shape of the sealing strip 590 is matched with the shape of the opening of the oil box 510. The opening of the oil box 510 is provided with a sealing strip mounting groove 519, and a sealing strip 590 is mounted in the sealing strip mounting groove 519. The oil box 510 is provided with: quick drain port 514 and pressure relief port 515; the quick oil drain port 514 is arranged at the bottom of the oil box 510, and an oil drain cover 540 is arranged on the quick oil drain port 514; the pressure relief port 515 is provided at an upper portion of a side wall of the oil tank 510, and the pressure relief cover 550 is mounted on the pressure relief port 515. The side of the oil box 510 is provided with a collection area 513, a quick oil discharge port 514 is arranged in the collection area 513, and a pressure relief port 515 is arranged at the sewing side far away from the collection area 513. The cover plate 520 is provided with an oil wire leading-out opening 522 and a blocking cover 580; the oil line to be installed passes through the oil line outlet 522, so that the lubricating oil in the oil box 510 is conveyed to other transmission mechanisms along the oil line; the cap 580 is used to grip the trailing end of the wick and prevent it from being pulled out and out of the lubrication chamber in the cartridge 510.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical implementation of the present invention in any way, and the scope of the present invention is not limited thereby, and any person skilled in the art can make many modifications or other equivalent embodiments without departing from the scope of the technical means disclosed in the present disclosure, and therefore, the present invention should be regarded as the technical or embodiment substantially the same as the present invention, and therefore: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (10)

1. A sewing machine comprises a base (210), wherein a tooth lifting mechanism (440), a cloth feeding mechanism (420), a rotating shuttle mechanism (430) and an oil supply assembly (50) are arranged on the base (210); it is characterized in that the preparation method is characterized in that,

a lubricating cavity (211) is arranged on the left side of the base, and the lubricating cavity (211) comprises a first cavity (2111) and a second cavity (2112); the first containing cavity (2111) and the second containing cavity (2112) are adjacently arranged and communicated;

a tooth lifting shaft (442) of the tooth lifting mechanism (440) penetrates through the second accommodating cavity (2112); a driving gear (441) is sleeved on the tooth lifting shaft (442) in the second containing cavity (2112);

a rotating shuttle shaft (432) of the rotating shuttle mechanism (430) penetrates through the first accommodating cavity (2111); a driven gear (431) is sleeved on the rotating shuttle shaft (432) in the first accommodating cavity (2111); the driving gear (441) and the driven gear (431) are meshed and rotated, so that the feed lifting shaft (442) drives the rotating shuttle shaft (432);

a shaft sleeve (434) is arranged on the side wall of the first containing cavity (2111) through which the rotating shuttle shaft (432) passes, and the rotating shuttle shaft (432) is rotatably arranged in the shaft sleeve (434); an oil inlet channel (4341), an oil outlet channel (4342) and an oil delivery assembly (500) are arranged in the shaft sleeve (434); the oil inlet channel (4341) is communicated with an oil delivery pipe (52) of the oil supply assembly (50); the oil outlet channel (4342) is communicated with an oil return pipe (53) of the oil supply assembly (50); the rotating shuttle shaft (432) is matched with the oil delivery assembly (500) to deliver oil in the oil inlet channel (4341) to the oil outlet channel (4342);

the oil outlet channel (4342) is provided with an auxiliary channel (4343), and the auxiliary channel (4343) is communicated with the lubricating cavity (211).

2. A sewing machine according to claim 1, wherein the side wall of the lubricating chamber (211) cooperates with the front side wall of the base (210) to form a second mounting groove (213); a cloth feeding motor (410) of the cloth feeding mechanism (420) is arranged in the second mounting groove (213); the main body of the cloth feeding motor (410) is arranged in a suspended mode, so that the first containing cavity (2111) extends forwards to the position above the cloth feeding motor (410).

3. The sewing machine according to claim 1, wherein the oil supply unit (50) includes an oil tank (510), and the oil feed pipe (52) and the oil return pipe (53) are provided on one side of the oil tank (510); an oil box mounting groove (215) is formed in the right side of the base, and an oil box (510) is mounted in the oil box mounting groove (215); the oil box (510) is fixed on the base (210), the cover plate (520) is installed on the oil box (510), and the oil box (510) and the cover plate (520) form an oil storage cavity; an oil pointer (530) is arranged in the oil storage cavity, and the oil pointer (530) floats above oil in the oil storage cavity; the oil pointer (570) is provided with an indicating rod (531), and the indicating rod (531) extends upwards and sequentially penetrates through the cover plate (560) and the through hole (2121) in the base (210).

4. A sewing machine according to claim 3, characterized in that the oil box (510) is internally provided with a housing groove (511) for housing the oil pointer (530); the cover plate (520) is provided with a guide column (521), the oil pointer (530) is provided with a buoy (532), and the guide column (521) is provided with a buoy accommodating part (5211) capable of accommodating the buoy (532) and an indicating rod guide part (5212) for guiding the indicating rod (531); the guide post (521) is hollow inside, and the height of the float accommodating part (5211) is greater than or equal to that of a float (532).

5. The sewing machine according to claim 3, wherein the oil box (510) is provided with an oil feed groove (512) and an oil feed hole (516), the oil feed groove (512) is provided at the bottom of the oil box (510), the oil feed hole (516) is located at one side of the oil feed groove (512), and the oil feed pipe (52) is connected to the outside of the oil feed hole (516) through an oil feed joint (560).

6. A sewing machine according to claim 1, wherein the feed mechanism (420) further comprises: a crank (421), a connecting rod (422), a rotating shaft (423), a tooth holder (424) and a feed dog (425); the crank (421) is rotationally connected with one end of the connecting rod (422), the rotating shaft (423) is rotationally connected with the other end of the connecting rod (422), the rotating shaft (423) can be rotationally connected to the base (210), and one end of the tooth holder (424) is rotationally connected with the rotating shaft (423); a feed dog (425) is arranged on the tooth holder (424); the cloth feeding motor (410) is used for driving the crank (421), the crank (421) drives the connecting rod (422) to swing, and the connecting rod (423) drives the rotating shaft (423) to rotate; the tooth holder (424) can be driven by the rotating shaft (423) to move.

7. The sewing machine of claim 1, wherein the feed lifting mechanism (440) further comprises: the tooth lifting shaft (442) and the synchronous belt (443), one end of the tooth lifting shaft (442) is connected with the synchronous belt (443), and the other end of the tooth lifting shaft (442) is rotationally connected with the tooth holder (424); the synchronous belt (443) drives the tooth lifting shaft (442) to rotate, and the tooth lifting shaft (442) drives one end of the tooth base (424) to swing up and down through the eccentric shaft part (444); the other end of the tooth holder (424) is driven by the rotating shaft (423) to swing back and forth.

8. A sewing machine according to claim 1, further comprising a thread cutting and presser foot lifting mechanism (300), the thread cutting and presser foot lifting mechanism (300) comprising: a first drive device (310); the base (210) is further provided with: the first installation groove (214) is used for installing the first driving device (310), the cloth feeding shaft (425) penetrates through the first installation groove (214), the first driving device (310) is arranged in the first installation groove (214) in a hanging mode, and the hanging area is used for avoiding the walking shaft (425).

9. A machine according to claim 1, wherein a sump (2113) is provided in the side wall of said lubricating chamber (211) remote from said first housing (2111).

10. A sewing machine according to claim 2, characterized in that the oil reservoir tray (540) is provided with a viewing window (541) for viewing the amount of oil in the lubrication chamber (211); the oil storage tray (540) is provided with an oil outlet (542) and an oil filling port (543).

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