KR20040094332A - Oil supplying device for sewing machine - Google Patents

Abstract

PURPOSE: A lubricating fluid supplying device of a sewing machine is characterized by controlling flow amount of a lubricating fluid with a pump operated by driving of a driving shaft interlocking with a sew needle to prevent leakage of the fluid. CONSTITUTION: A lubricating fluid supplying device of a sewing machine comprises: a storage bath(1) which is installed on a lower part of a bed of the sewing machine, keeping a lubricating fluid; a distributing part(2) which is installed on an upper part of the bed, keeping the lubricating fluid temporarily; delivery paths(31,32,33) delivering the lubricating fluid from the storage bath(1) to the distributing part(2); a pump(4) which is installed on the delivery paths, pumping the lubricating fluid kept in the storage bath(1) to the distributing part(2) by driving of a driving shaft(41); a supplying part(6) supplying the lubricating fluid to an oiling position by using capillarity from the distributing part(2); a return path(7) streaming naturally the lubricating fluid from the distributing part(2) by gravity to put the lubricating fluid back to the storage bath(1); and a flow controller(5) which is installed between the storage bath(1) and the pump(4), controlling flow amount of the lubricating fluid.

Description

Oil supply device of sewing machine {OIL SUPPLYING DEVICE FOR SEWING MACHINE}

The present invention relates to a lubricating liquid supply device of a sewing machine.

DESCRIPTION OF RELATED ART Conventionally, the oil supply apparatus of the sewing machine for pulling up the lubricating oil stored in the oil tank by the pump, and supplying it to the needle bar mechanism part which the upper shaft of a sewing machine, a needle bar, etc. operate is known (for example, refer patent document 1).

Fig. 5 shows an example of a lubrication device for a sewing machine that is a lubricating liquid supply device for a sewing machine.

As shown in FIG. 5, the sewing machine main body 1111 has a bed portion 1001 and a driven portion 1002 standing on the bed portion 1001. The oil supply device 100 is provided with an oil tank 101 in the bed portion 1001, and the lower shaft 141 in which the lubricating oil stored in the oil tank 101 rotates in synchronization with the vertical movement of the needle bar 92. It is pulled up by the pump 104 operating in accordance with the driving of, and sent to the sorting unit 102 located in the follower 1002 through the transfer tube 133.

Then, the feed tube 133 is branched into the lubrication tube 161 and the conveyance tube 107 which are the dividing paths. The band 162 of the knitting band is inserted into the oil supply tube 161 located above the splitter 102, and one end 162a of the knit band 162 protrudes into the feed tube 133. have. The lubricating oil reaching the flow dividing path 102 is transmitted to the knitting band 162 by the capillary phenomenon, and to the needle bar mechanism 90 where the upper shaft 91, the needle bar 92, and the like arranged on the arm part 1003 operate. It is designed to be supplied slowly.

The lubricating oil not sent to the oil supply tube 161 flows naturally through the conveying tube 107 located below the flow dividing unit 102 to return to the oil tank 101.

[Patent Document 1]

Japanese Utility Model Registration Publication No. 2545249

However, in the case of Patent Document 1, since the lubricating oil naturally flows down and returns to the oil tank 101, when the viscosity of the lubricating oil changes depending on the type of the lubricating oil, the temperature of the use environment, or the like, the lubricating oil becomes an oil tank ( A change occurs in the flow rate flowing into the conveying tube 107 toward 101. For this reason, when the temperature is lowered and the sewing machine is driven, the viscosity of the lubricating oil becomes high. Therefore, the lubricating oil in the conveying tube 107 is less likely to flow and flows at a lower speed.

Here, the output of the pump 101 is dependent on the number of revolutions of the lower shaft 141, so as the number of revolutions of the lower shaft 141 increases, the output of the pump 101 also increases and the supply of lubricant oil sent into the feed tube 133. The pace is faster.

In this case, the feed face to the conveying tube 133 is faster than the face of the lubricating oil flowing down into the conveying tube 107, and flows into the lubricating tube 161 due to the pressure difference in the fractionation part 102 so that a large amount of lubricating oil is supplied toward the needle bar. As a result, the sewing product is contaminated on the cloth through a needle bar or the like, or lubricating oil leaks into the sewing machine 1111 from the joint between the tube and the sorting unit 102, so that the lubricating oil in the oil tank 101 is quickly worn out and pressed. The problem arises.

An object of the present invention is to provide a lubricating fluid supplying device of a sewing machine which prevents problems such as leakage of a lubricating liquid drawn up by a pump, leakage, contamination of sewing products, or burning of a sewing machine.

BRIEF DESCRIPTION OF THE DRAWINGS Explanatory drawing which shows the lubricating liquid supply apparatus of the sewing machine concerning this invention.

2 is an explanatory diagram showing a flow rate adjusting part of a lubricating liquid supply device of a sewing machine.

3 is an explanatory view showing a sewing machine equipped with a lubricating fluid supply device of the sewing machine.

4 is an explanatory view showing a sewing machine equipped with a lubricating fluid supply device of the sewing machine.

5 is a perspective view showing a sewing machine equipped with a lubricating fluid supply device of a conventional sewing machine.

* Description of the main parts of the drawings *

1: Oil tank (storage tank) 1a: Supply port (junction)

2: Classification tank (classification part) 3: Feeding tube

31: First feeding tube (feeding path) 32: Second feeding tube (feeding path)

33: third supply tube (feed path) 4: pump

41: lower shaft (drive shaft) 5: flow control unit

51 frame 5a inflow port

5b: discharge port 5d: flow path

52: adjusting screw (adjusting member) 6: supply part

61: supply tube 62: oil shim

7: conveying tube (conveying path) 10: lubricating fluid supply device of the sewing machine

11: sewing machine table (fixed body) 12: driven part

14: sewing machine bed 14a: end (one side of the sewing machine bed)

88: hinged attachment member 1000: sewing machine

In order to solve the above problems, the invention described in claim 1 is arranged below the sewing machine bed 14 to store a lubricating liquid (oil tank 1), and is disposed above the sewing machine bed to temporarily lubricate the lubricating liquid. The sorting part (for example, the sorting tank 2) to store, and the feeding path which feeds a lubricating liquid from a storage tank (for example, the 1st supply tube 31, the 2nd supply tube 32, and the 3rd supply tube) (33)), and a pump (4) installed in the supply path and for pulling up the lubricating liquid stored in the reservoir according to the drive shaft (for example, the lower shaft 9) driven in rotation in synchronism with the up and down movement of the sewing needle to the dividing section; , A supply part 6 for supplying lubricating liquid to a predetermined oil supply place of the sewing machine by using a capillary phenomenon from the sorting part, and a conveying path for flowing the lubricating fluid naturally from the fractionating part by gravity and returning it to the storage tank (for example, the conveying tube 7). Sewing with As the lubricant supply device 10, it is characterized in that between the reservoir and the pump of the feeding path, provided with a flow control unit 5 for adjusting the flow rate of the lubricant.

According to the invention according to claim 1, the lubricating liquid supply device of the sewing machine, the pump operating in accordance with the drive of the drive shaft that rotates in synchronization with the vertical movement of the sewing needle, the supply path is provided with a flow control unit for adjusting the flow rate of the lubricating liquid Through this, the lubricating liquid stored in the reservoir is pulled up to the fractionation part. Then, the supply unit supplies the lubricating liquid temporarily stored in the dividing unit to a predetermined oil supply site by using a capillary phenomenon, and the lubricating liquid remaining in the dividing unit flows down the conveying path naturally and returns to the storage tank.

That is, even in the case of a pump that operates in accordance with the drive shaft which rotates in synchronization with the up and down movement of the sewing needle, and the output rises and decreases (increases or decreases) with the number of rotations of the sewing needle, The flow rate of the lubricating liquid drawn up to the fractionation part can be adjusted.

Therefore, the flow rate of the lubricating liquid drawn up to the dividing unit can be adjusted according to the flow rate or flow rate of the lubricating liquid flowing down the conveying path naturally by the action of gravity from the dividing unit. In this case, problems such as overflowing or leaking of excess lubricant in the fractionation unit or the like can be prevented.

In the invention according to claim 2, in the lubricating liquid supply device for a sewing machine according to claim 1, the flow rate adjusting part includes an inflow port 5a through which the lubricating liquid flows, a discharge port 5b through which the lubricating liquid is discharged, an inflow port, and the discharge port. A frame 51 having a flow path 5d for connecting the port, and a substantially conical adjustment member (for example, an adjustment screw 52) provided to be able to move back and forth in the flow path, and lubricating liquid by moving the adjustment member in its axial direction. It characterized by adjusting the flow rate of.

Here, the "approximately conical shape" also includes a conical shape.

According to the invention of claim 2, the same operation as that of the invention of claim 1 is carried out, and the gap between the flow path and the adjustment member is adjusted by retreating in the axial direction the substantially conical adjustment member provided in the flow path of the frame of the flow regulating portion. The flow rate of the lubricating liquid flowing through the flow path can be preferably adjusted.

That is, since the adjusting member is substantially conical, the distance between the adjusting member and the inner surface of the flow path and the gap can be finely adjusted, so that the flow rate of the lubricating oil flowing through the flow path can be finely adjusted.

In the invention according to claim 3, in the lubricating liquid supply device for a sewing machine according to claim 1 or 2, the end portion 14a of one side of the sewing machine bed is fixed by a hinge attachment member 88 (e.g., sewing machine table ( 11)), the reservoir is attached to the sewing machine bed below the sewing machine bed, and the joint between the reservoir and the feeding path (e.g., the feeding port 1a) is separated from the pivot of the hinged attachment member. It is characterized in that formed on the end side.

According to the invention described in claim 3, in the sewing machine having the same effect as the invention according to claim 1 or 2, and equipped with a lubricating liquid supply device of the sewing machine, an end of one side of the sewing machine bed is fixed by a hinged attachment member. At the same time it is attached to the hinge, the reservoir is attached to the lower side of the sewing machine bed. The junction between the reservoir and the feeding route is formed at the end of the reservoir away from the pivot of the hinged attachment member.

That is, in the storage tank in which the sewing machine bed is tilted as it rotates about the rotational axis of the hinged attachment member, the junction between the storage tank and the feeding path is formed at the end side of the storage tank away from the rotational axis of the hinged attachment member. Therefore, when the reservoir is inclined, the junction portion is located above the reservoir. And since the said joining part becomes easy to be located above the liquid level of the lubricating liquid stored in the inclined storage tank, it can prevent that a lubricating liquid is supplied easily in the inclined state.

Therefore, it is possible to reduce the problem of lubricating liquid leakage caused by supplying lubricating liquid while the lubricating liquid supply device of the sewing machine is inclined.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4.

The sewing machine bed 14 is fitted in the hole of the sewing machine table 11, which is a fixed body, and the upper surface of the sewing machine bed 14 coincides with the upper surface of the sewing machine table 11.

On the other hand, in the drawing of FIG. 1, members (for example, the sorting tank 2, etc.) described in the range of the dotted line A have an arrangement relationship which is installed in the vertical direction of FIG.

In addition, in FIG. 1, the member (classification tank 2, supply part 6) of the range enclosed by the dotted line B is arrange | positioned in the follower part 12 of the sewing machine which is upper side of the sewing machine bed 14 (refer FIG. 3). ), And the like (eg, the oil tank 1) are disposed on the sewing machine bed 14 and disposed below the upper surface of the sewing machine table 11 (see FIG. 3).

As shown in FIG. 1, the lubricating fluid supply device 10 of the sewing machine includes an oil tank 1 for storing lubricating oil, a fractionation tank (classifying part) 2 for temporarily storing lubricating oil, and an oil tank 1. Supply tube (feed path (3); first supply tube (31), second supply tube (32), third supply tube (33)) for supplying lubricant to the sorting tank (2), and second supply A pump 4 installed between the tube 32 and the third supply tube 33, a flow rate control unit 5 provided between the first supply tube 31 and the second supply tube 32, and a split tank ( (2) a feeding tube (6) for supplying lubricating oil to a predetermined lubricating place from (2) and a lubricating oil flowing naturally from the fractionation tank (2) by gravity to return to the oil tank (1). And the like.

The oil tank 1 is a storage tank for storing lubricating oil, and has an oil port 18 for lubricating oil in the oil tank 1 and an oil having a float 19a indicating a storage amount of lubricating oil stored in the oil tank 1. Gauge 19 is provided.

The sorting tank 2 temporarily stores the lubricant oil fed through the feed tube 3 (the first feed tube 31, the second feed tube 32, and the third feed tube 33), and the supply unit (to be described later) ( It is a tank that lubricates the oil seam (6) of 6). The remaining lubricating oil which does not penetrate into the oil shim 62 naturally flows down into the conveying tube 7 leading to the conveying port 2a of the fractionation tank 2 and passes through the oil gauge 19 to the oil tank 1. Return to On the other hand, the conveying tube 7 is preferably provided in the vertical direction with respect to the sewing machine bed 14 (see Fig. 3).

The pump 4 is driven in accordance with the rotational drive of the lower shaft (drive shaft; 41) which rotates in synchronization with the up and down movement of the sewing needle (not shown) while the sewing machine (not shown) is driven, thereby feeding the lubricant oil from the oil tank (1). It is, for example, a plunger pump, which is pulled up to the fractionation tank 2 through (3).

In addition, an oil filtration flow passage 42 including an oil filter 44 is provided between the pump 4 and the oil tank 1.

The flow rate adjusting unit 5 includes an inflow port 5a through which the lubricating oil flows from the supply port 1a of the oil tank 1 through the first supply tube 31, and the lubricating oil to the second supply tube 32. The discharge port 5b to discharge, the frame 51 in which the flow path 5d which is a space connecting the inflow port 5a and the discharge port 5b are formed, and the flow path 5d can be moved forward and backward in the axial direction. And an adjusting screw 52, which is an adjusting member provided.

The flow path 5d is a space having a circular cross section perpendicular to the longitudinal direction, and an approximately conical adjustment screw 52 is disposed in the flow path 5d along the longitudinal direction of the flow path 5d. It is.

As shown in Fig. 2, in the flow rate adjusting section 5, the adjustment screw 52 is moved forward and backward in its axial direction to adjust the arrangement position, so that the tapered surface 52a and the flow path 5d of the adjustment screw 52 are adjusted. By adjusting the distance between the inner surface 51d of the can be adjusted the degree between the poles can be adjusted the flow rate of the lubricating oil flowing through the flow path (5d). In other words, it is possible to increase the flow rate by increasing the gap and to reduce the flow rate by narrowing the gap.

The adjustment of the flow rate can be achieved by advancing and adjusting the adjusting screw 52 in the flow path 5d so as to match the scale marked in advance according to the viscosity according to the type of lubricating oil or the temperature under the use environment of the sewing machine.

In particular, since the adjusting screw 52 has a substantially truncated conical shape, and a tapered surface 52a having a tapered shape is formed on the surface thereof, the distance between the adjusting screw 52 and the inner surface 51d of the flow path 5d and the gap therebetween. Can be fine tuned. That is, the flow volume of the lubricating oil which flows through the flow path 5d in the flow volume control part 5 can be adjusted finely.

Moreover, the flow volume control part 5 is also provided with the north flow volume control part 55 for adjusting the flow volume of the lubricating oil supplied to the north side of the sewing machine which is not shown in figure. The bobbin flow rate adjusting part 55 is a bobbin inflow port 55a through which the lubricant oil flows from the pump 4 through the drum feeding tube 45, and a first drum collecting the lubricant oil to the first drum feeding tube 58. A flow path that is a space connecting the discharge port 55b, the second drum discharge port 55c for discharging the lubricating oil to the second drum feed tube 59, and the inlet port 55a and the discharge ports 55b and 55c. And a frame 51 having 55d formed therein, and an adjustment screw 53 provided in the flow path 55d so as to be able to advance and retract in the axial direction thereof. Lubricating oil discharged from the first drum discharge port 55b is supplied to a drum not shown through the first drum feed tube 58 and the retainer 8. In addition, the lubricating oil discharged from the second booklet discharge port 55c is returned to the oil tank 1 through the second booklet supply tube 59 as excess lubricant.

On the other hand, adjusting the flow rate by the adjustment screw 53 in the bobbin flow rate adjusting unit 55 is the same as in the case of the adjustment screw (52).

The supply part 6 is comprised from the supply tube 61 with one end 61a connected to the dividing tank 2, the oil shim 62 arrange | positioned in the supply tube 61, etc. As shown in FIG. The oil shim 62 is a member such as a string or a string made of fibers such as cotton, and is a knitted band or the like that sucks up a liquid using a capillary phenomenon.

One end 62a of the oil shim 62 is inserted into the fractionation tank 2 and contacts the lubricant oil temporarily stored in the fractionation tank 2. And the lubricating oil which permeated the oil shim 62 by contact is supplied slowly toward the other end 61b of the supply tube 61 (the other end 62b of the oil shim 62) by a capillary phenomenon. Then, lubricating oil is sprayed and supplied to the needle bar drive mechanism (not shown), which is a predetermined lubrication place of the sewing machine, by a sprayer (not shown) provided on the other end 61b side of the supply tube 61.

In addition, since the needle bar drive mechanism part (not shown) is provided in the arm part 13 (refer FIG. 3) in front of the driven part 12 of a sewing machine, it is covered by the partition which is not shown, and is sprayed on the needle bar drive mechanism part (not shown). Lubricant does not splash outside the partition not shown so that other places of the sewing machine are not soiled by the lubricant. Therefore, a problem such as lubricating oil splashes on the sewing material sewn with the sewing machine does not occur.

The excess in the lubricant oil sprayed on the needle bar drive mechanism (not shown) is concentrated at the lower part of the needle bar drive mechanism (not shown), and is refluxed to the pump 4 through the reflux tube 9 to return each of the sewing machines. Supplied by wealth.

As described above, according to the lubricating liquid supply device 10 of the sewing machine of the present invention, by adjusting the arrangement position by retreating the adjustment screw 52 provided in the flow path 5d in the flow direction 5 in the axial direction, The flow rate of the lubricating oil which flows through the flow path 5d can be adjusted by adjusting the distance between the taper surface 52a of the screw 52, 51d of the inner surface 51d of the flow path 5d, and a gap.

Therefore, even if the output of the pump 4 which raises the lubricating oil increases or the lubricating oil with a different viscosity is used, the flow rate can be adjusted by the flow rate adjusting part 5, so that the lubricating oil is drawn too much into the fractionation tank 2. There is no raising, and the problem of oil leaking out of the sorting tank 2 can be prevented.

For example, when using a kind of lubricating oil having a high viscosity or using a sewing machine at a low temperature where the viscosity of the lubricating oil becomes high, the flow rate of the lubricating oil flowing down the conveying tube 7 from the flow dividing tank 2 becomes low, so that the flow path 5d is used. The flow rate of the lubricating oil flowing through the flow path 5d of the flow rate control unit 5 is reduced by adjusting the arrangement position of the adjustment screw 52 of the flow rate control unit 5 so that the flow rate narrows. In addition, the flow rate is reduced during high-speed operation in which excessive output of the pump 4 is considered. As a result, the supply amount of the lubricating oil supplied to the fractionation tank 2 by the pump 4 and the flow rate of the lubricating oil flowing down the conveying tube 7 can be balanced, and the lubricating oil is excessively supplied to the fractionation tank 2. It is possible to prevent leakage of lubricant oil from the sorting tank 2 or the like by eliminating work.

In addition, when using a kind of lubricating oil having a low viscosity or using a sewing machine at a high temperature at which the viscosity of the lubricating oil is low, the flow rate adjusting part 5 is adjusted by adjusting the arrangement position of the adjusting screw 52 so as to widen the flow path 5d. What is necessary is just to increase the flow volume of the lubricating oil which flows through the oil passage 5d.

3 and 4, in the sewing machine 1000, an end portion 14a of one side of the sewing machine bed 14 is hinged to the sewing machine table 11 by the attaching member 88. It is attached to the hinge, the sewing machine bed 14 is provided so as to rotate with respect to the sewing machine table 11 around the rotation axis of the hinged attachment member 88.

In the sewing machine 1000, the lubricating fluid supply device 10 of the sewing machine is attached to the lower surface of the sewing machine bed which is an oil tank 1 below the sewing machine bed 14, as shown in FIG. 2) is provided to be disposed on the follower 12 of the sewing machine that is above the sewing machine bed (14).

And the supply port 1a which is the junction part of the 1st supply tube 31 and the oil tank 1 is formed in the edge part of the oil tank 1 which is separated from the center axis of the hinged attachment member 88. As shown in FIG.

When the maintenance work is performed on the inside of the sewing machine table 11 of the sewing machine, as shown in FIG. 4, the sewing machine bed 14 is rotated to be inclined to open, and the maintenance work is performed.

As the sewing machine bed 14 is rotated, the follower 12 of the sewing machine joined integrally with the sewing machine bed 14 is tilted or knocked down, so that the sorting tank 2 disposed on the follower 12 is also inclined. do. In a state where the dividing tank 2 is inclined and the conveying tube 7 is inclined, it is difficult for lubricant oil to flow out of the conveying tube 7.

That is, when the fractionation tank 2 is inclined to drive the sewing machine 1000, and the pump 4 driven by the rotational drive of the lower shaft 9 pulls up the lubricating oil through the supply tube 3, The supply amount of the lubricating oil to be raised is larger than the flow rate of the lubricating oil flowing down the conveying tube 7, and the lubricating oil which is excessively drawn up leaks from the fractionation tank 2 or the like.

Here, in the lubricating fluid supply apparatus 10 of the sewing machine which concerns on this invention, the supply port 1a which is the junction part of the 1st supply tube 31 and the oil tank 1 is the central axis of the hinged attachment member 88. Since it is formed at the end side of the oil tank 1 separated from the oil tank 1, the sewing machine bed 14 is inclined by the rotation of the hinged attachment member 88, and the oil tank 1 attached to the sewing machine bed 14 is inclined. At this time, the supply port (1a) is located on the upper side of the oil tank (1). The supply port 1a is located above the oil surface (liquid surface) of the lubricating oil stored in the oil tank 1.

Therefore, as the sewing machine bed 14 is inclined, and the like, the lubricating fluid supply device 10 of the sewing machine is inclined and the oil tank 1 or the fractionation tank 2 is inclined, so that the sewing machine 1000 may be misoperated. Even if the pump 4 is going to supply the lubricating oil by the driving, since the supply port 1a is located above the oil surface of the lubricating oil, the lubricating oil is not supplied. Therefore, the problem that lubricating oil leaks from the dividing tank 2 etc. does not arise.

Thus, according to the lubricating liquid supply apparatus 10 of the sewing machine of this invention, by adjusting the flow volume of the lubricating oil which flows through the flow path 5d by the flow control part 5, the output of the pump 4 which raises a lubricating oil is constant. Even if it is possible to adjust the amount of lubricating oil pulled to the fractionation tank (2) can reduce the problem of oil leakage in the fractionation tank (2).

In addition, when the sewing machine 1000 is inclined and the lubricating fluid supply device 10 of the sewing machine is inclined, the supply port 1a of the oil pump 1 is located at the end side of the oil pump 1 so as to be located above the oil surface of the lubricating oil. By providing the supply port 1a, it is possible to prevent the lubricating oil from being supplied when the lubricating liquid supply device 10 of the sewing machine is inclined, thereby reducing the problem of oil leakage.

Furthermore, in the above embodiment, the flow rate adjusting section 5 is used to adjust the flow rate of the lubricating oil flowing in the flow path 5d of the flow rate adjusting section 5 finely by using the adjustment screw 52 of the substantially conical shape. Is not limited to this, and if the desired flow rate adjustment is possible, the shape of the adjustment screw may be any shape, and for example, the flow rate of the lubricating oil flowing through the flow path may be adjusted by the adjustment screw of the spherical shape.

In addition, although the flow rate adjusting unit 5 adjusts the flow rate by adjusting the arrangement position of the adjustment screw 52 on the scale marked in advance, the present invention is not limited to this, and the pressure or the lubricating oil flow rate in the supply tube 3 is adjusted. According to the detection result, a mechanism for automatically retracting the adjusting screw 52 to adjust its arrangement position may be provided.

In addition, of course, it can change suitably also in a concrete detailed structure.

According to the invention according to claim 1, the lubricating liquid supply device of the sewing machine, the pump operating in accordance with the drive of the drive shaft that rotates in synchronization with the vertical movement of the sewing needle, the supply path is provided with a flow control unit for adjusting the flow rate of the lubricating liquid Through this, the lubricating liquid stored in the reservoir can be pulled up to the fractionation unit.

Therefore, even if the pump operates by driving the drive shaft rotating in synchronization with the up and down movement of the sewing needle, and the output is increased (decreased) according to the number of revolutions of the drive shaft, by adjusting the flow rate of the lubricating liquid in the flow control unit The flow rate of the lubricating liquid drawn up to the fractionation part can be adjusted. Therefore, the flow rate of the lubricating liquid drawn up to the dividing unit can be adjusted according to the flow rate or flow rate of the lubricating liquid naturally flowing down the return path from the dividing unit by the difference in the use environment, the viscosity of the lubricating liquid or the action of gravity. In this case, the lubricating liquid is not drawn up too much into the fractionation section, and the problem of excessive lubricating liquid overflowing or leaking in the fractionation section or the like can be prevented.

According to the invention of claim 2, by advancing in the axial direction the substantially conical adjustment member provided in the flow path of the frame of the flow control part, the flow rate of the lubricating liquid flowing through the flow path can be preferably adjusted by adjusting the gap between the flow path and the adjustment member. have.

Therefore, the distance between the adjustment member and the inner surface of the flow path and the gap can be finely adjusted by the substantially conical adjustment member, so that the flow rate of the lubricating oil flowing through the flow path can be finely adjusted.

According to the invention according to claim 3, a sewing machine provided with a lubricating fluid supplying device of a sewing machine, wherein the sewing machine is tilted as the sewing machine bed rotates about a pivot axis of a hinged attachment member, between the storage tank and the feeding path. Since the joining portion is formed on the end side of the reservoir away from the pivot shaft of the hinged attachment member, the joining portion is located above the reservoir when the reservoir is inclined. And since the said joining part becomes easy to be located in the upper side of the lubricating liquid liquid level stored in the inclined storage tank, it can prevent that a lubricating liquid is supplied easily in the inclined state.

Therefore, the problem of the leakage of the lubricating liquid which arises when the lubricating liquid is supplied in the state which tilted the lubricating liquid supply apparatus of a sewing machine can be reduced.

Claims (3)

A reservoir disposed under the sewing machine bed to store lubricating fluid, Dispensing unit disposed above the sewing machine bed to temporarily store the lubricating liquid, A supply path for supplying the lubricating liquid from the reservoir to the sorting unit, A pump installed in the feeding path and pulling up the lubricating liquid stored in the reservoir according to the driving of the sewing machine driving shaft to the sorting unit; A supply unit for supplying the lubricating liquid to a predetermined oil supply place of the sewing machine by using a capillary phenomenon from the sorting unit, and A lubricating liquid supply apparatus for a sewing machine having a conveying path for naturally flowing the lubricating liquid from the dividing unit by gravity and returning it to the storage tank, A lubricating liquid supply device for a sewing machine, characterized in that a flow rate adjusting portion for adjusting a flow rate of the lubricating liquid is provided between the reservoir and the pump of the supply path. The method of claim 1, The flow rate control unit, A frame having an inflow port through which the lubricating liquid is introduced, a discharge port through which the lubricating liquid is discharged, a flow path connecting the inflow port and the discharge port, and It is provided with a conical adjustment member of the conical shape provided to be able to move forward and backward in the flow path, Characterized in that the flow rate of the lubricating liquid is adjusted by advancing and retracting the adjusting member in the axial direction thereof. Lubricant supply of sewing machine. The method according to claim 1 or 2, An end of one side of the sewing machine bed is hinged to the fixed body by a hinged attachment member, The reservoir is attached to the sewing machine bed below the sewing machine bed, The junction between the reservoir and the feeding path is formed on an end side of the reservoir away from the pivot shaft of the hinged attachment member. Lubricant supply of sewing machine.