CN1500929A

CN1500929A - Oil draining device for sewing machine needle bar

Info

Publication number: CN1500929A
Application number: CNA021542856A
Authority: CN
Inventors: 嘉数田隆志
Original assignee: Pegasus Sewing Machine Manufacturing Co Ltd
Current assignee: Pegasus Co Ltd
Priority date: 2002-11-14
Filing date: 2002-12-19
Publication date: 2004-06-02
Anticipated expiration: 2022-12-19
Also published as: TW200415281A; JP2004159959A; CN100417761C

Abstract

Provided is a needle bar oil drainage mechanism for a sewing machine corresponding to high speed driving.The needle bar oil drainage mechanism for the sewing machine includes an oil absorbing member adjacent to the lower end of a bearing for the needle bar; and an oil drainage tube which is connected to the oil absorbing member and sucks oil in interlocking with the rotation of a main shaft. Surplus oil after supplied to the needle bar is returned to an oil storage in the bottom part of the sewing machine. The tip end of the oil drainage tube is formed to have a larger width and opened upward. The oil absorbing member is formed to be large in width and inserted to the wide part of the oil drainage tube, and the middle part of the oil drainage is made to be hollow. Thus, a part adjacent to the lower end of the bearing for the needle bar is enlarged. Besides, drain oil staying at the tip end of the oil drainage tube and absorbed by the oil absorbing member is returned to the oil storage in the bottom part of the sewing machine through the hollow part of the oil drainage tube.

Description

The sewing machine needle bar discharge equipment

Technical field

The present invention relates to a kind of sewing machine needle bar discharge equipment that makes the remaining oil of supplying with shank turn back to the oil container of Sewing machines bottom.

Background technology

In existing sewing machine shank discharge equipment, utilize with the adjacent oily absorption component (wick) of the part of use in sewing machine bearing lower end and carry out the oil extraction (the 3rd page of left hurdle of the fair 6-10955 communique of for example, reference reality, the 5th figure) of shank with oil exit pipe with the attraction that is connected with this oil absorption component.

But, in existing sewing machine shank discharge equipment, the wick that constitutes oily absorption component is only adjacent with the part of bearing lower end with shank, if the driving of Sewing machines reaches at a high speed, no longer coordinate between then oil extraction is handled, thereby can produce oil splashing on the cloth loading end.And, owing to constitute the deep inside that the wick of oily absorption component inserts oil exit pipe, therefore, when with the rotation interlock of machine spindle when attracting oil, the oil of discharge can remain in the oil exit pipe, thereby makes the attraction degradation in efficiency of discharging oil.

Summary of the invention

Therefore, the object of the present invention is to provide a kind of sewing machine needle bar discharge equipment that is suitable for driving high speed.

To achieve these goals, the invention provides a kind of needle bar of sewing machine discharge equipment that is suitable for driving high speed, it is provided with the adjacent oily absorption component in the bearing lower end used with shank and links to each other with this oil absorption component and turn back in the oil container of Sewing machines bottom with oil exit pipe that attracts oil and the remaining oil that will be supplied to shank with the rotation interlock of main shaft, it is characterized in that, when the leading section that makes oil exit pipe is widened, make its opening upward, oily absorption component is widened with in the part of widening of inserting this oil exit pipe, made the mid portion of oil exit pipe form hollow state.

Adopt the present invention, make its opening upward simultaneously, oily absorption component is inserted in this width segments because the leading section of oil exit pipe is widened, so, the adjacent part of using with shank in bearing lower end can be increased.And, utilize the oil extraction of the oil exit pipe leading section that oily absorption component absorbs to turn back to the oil container of Sewing machines bottom by the hollow bulb of discharge pipe.

Description of drawings

Fig. 1 is the front view of needle bar of sewing machine discharge equipment of the present invention.

Fig. 2 is the major part of this device and the parts expanded view of needle bar mechanism.

Fig. 3 is the partial sectional view of the major part of this device of expression.

Fig. 4 is the partial sectional view that expression is applicable to the oily absorption component of this device.

Fig. 5 is the general view of the major part of oil exit pipe in this device of expression.

The specific embodiment

Below, utilize description of drawings according to embodiments of the invention.Shank 1 is supported on the bearing 2 that is pressed among the Sewing machines head MH slidably.The pin folder 4 of locking pin 3 is installed in the pin folder guide 5 and is fixed in the lower end of shank 1.As shown in Figure 1, stretch out above Sewing machines head MH the lower end of bearing 2.In the upper end of shank 1, as shown in Figure 2, be provided with the guide part 7 of the parallel gathering sill 7a with コ font.This guide part 7 is connected on the pin vibration crank 9 by pin 8.

Pin vibration crank 9 is fixed on the crank axle 10 by bolt 11, and crank 10 rotatably is supported in the

sleeve

12,12 that is pressed in the sewing machine stand.In addition, crank arm 13 is configured between the sleeve 12,12.This crank arm 13 is assemblied in the Sewing machines arm MA, and its front end becomes forked.This crank arm 13 also is fixed on the crank axle 10 by bolt 14, and the forked portion of crank arm 13 is connected on the pin vibrating arm 16 by pin 15.Pin vibrating arm 16 is arranged on the eccentric part periphery of main shaft 17.

Sewing machines arm MA and Sewing machines head MH are divided by closed chamber together, and wick 18 is communicated with two part MA, MH.As shown in Figure 3, the front end of wick 18 extend shank 1 near, the part of the oil that is splashed by Sewing machines arm MA is supplied to shank 1 by wick 18.The remaining oil that remains in the Sewing machines head MH turns back in the oil container 20 of Sewing machines bottom by outage 19.

At the lower end of bearing 2 configuration oil exit pipe 21.This oil exit pipe 21 is fixed to the sidepiece of sewing machine arm MA by bolt 22, and the suction tube 24 of trochoid pump 23 is connected on the oil exit pipe 21.As shown in Figure 4, the gear parts 23a of trochoid pump 23 is meshed with the gear part of main shaft 17, when main shaft 17 rotations, makes trochoid pump 23 work.And, as shown in Figure 5, oil exit pipe 21 opening upward in the front end width widen.Felt 25 is inserted among the widened section 21a of oil exit pipe 21.This felt 25 is along lateral widening, and the felt 25 that the part of bearing 2 bottoms is broadened covers.Beyond the widened section of oil exit pipe 21 is hollow.

In the present embodiment, though represent as the oily absorption component that is connected on the oil exit pipe with trochoid pump,, and should not be limited to this, for example also can adopt gear pump or jet flow pump (injection apparatus).

As mentioned above, adopt the present invention,, can suitably absorb because the remaining oil that shank moves up and down and produces owing to can increase oily absorption portion and the shank adjacent part of the lower end of bearing.Therefore, can prevent that oil from splashing on the cloth loading end.At this moment, because the hollow bulb of the discharge oil that utilizes the oil exit pipe leading section that oily absorption component absorbs by oil exit pipe turn back in the oil container of Sewing machines bottom,, correspondingly therewith can realize the high speed that Sewing machines drives so the attraction efficient of oil extraction is reduced.

Claims

1, a kind of sewing machine needle bar discharge equipment, its be equipped with the adjacent oily absorption component in the bearing lower end used with shank with link to each other with this oil absorption component and with the rotation interlock of main shaft to attract the oil exit pipe of oil, and be used for making the remaining oil that is supplied to shank to turn back to the oil container of Sewing machines bottom, it is characterized in that, when the leading section that makes oil exit pipe is widened, make its opening upward, oily absorption component is widened with in the part of widening of inserting this oil exit pipe, made the mid portion of oil exit pipe form hollow state.