CN209443191U - A kind of plunger pump oil supply mechanism of sewing machine - Google Patents
A kind of plunger pump oil supply mechanism of sewing machine Download PDFInfo
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- CN209443191U CN209443191U CN201920096707.5U CN201920096707U CN209443191U CN 209443191 U CN209443191 U CN 209443191U CN 201920096707 U CN201920096707 U CN 201920096707U CN 209443191 U CN209443191 U CN 209443191U
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- oil
- plunger pump
- nozzle
- supply mechanism
- sewing machine
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Abstract
The utility model provides a kind of plunger pump oil supply mechanism of sewing machine, belongs to field of mechanical technique.It solves the problems, such as that existing plunger pump oil supply mechanism is easy to produce fuel delivery excess.Sewing machine includes pedestal, this plunger pump oil supply mechanism includes the assembly of the plunger pump and fuel tank being set on the base, the oil return nozzle of assembly of the plunger pump is connected to by oil return pipe with the oil return opening of fuel tank, pressure control valve is equipped between assembly of the plunger pump and fuel tank, pressure control valve includes valve body and piston, valve body is divided into air chamber and oil pocket by piston, oil pocket is connected with the fuel oil supply nozzle of assembly of the plunger pump with the oil-feed port of fuel tank respectively by fuel feed pump, the pressure release oil nozzle being connected to oil pocket is additionally provided on valve body, pressure release oil nozzle is connected with fuel tank, being additionally provided in air chamber, which makes piston always, has the elastic component for being resisted against and sealing pressure release oil nozzle on pressure release oil nozzle.Connection by pressure release oil nozzle and the circulation closed, realize the pressure balance of oil pocket, guarantee stable fuel delivery, to guarantee the quality of sewing.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of plunger pump oil supply mechanism of sewing machine.
Background technique
The lubrication of existing major part sewing-machine rotating shuttle part is by plunger pump feed lubrication, and plunger oil pump feed is former
Reason, is made rotating motion by pump shaft (i.e. rotary shuttle shaft), is had cam portion (usual form is off-centre operation cambered surface) on pump shaft, is driven
The reciprocating motion of dynamic plunger, is equivalent to piston motion, generates vacuum, i.e. negative pressure cavity, realizes oil suction, and pump shaft rotates faster, suction
Bigger, pump oil is also more, and the oil provided to rotating shuttle is also more, can lead to the problem of oily excess.
Rotating shuttle fuel feeding is excessive in order to prevent, and common design is the oil revolving end design fuel-flow control pin in plunger pump structure,
The caliber size of oil return is controlled with fuel-flow control pin come to control be rotating shuttle fuel feeding end oil mass size, such as Chinese patent application (Shen
Please number: 200720105539.9) a kind of rotating shuttle fueler of flat seam machine disclosed in.There are two deficiencies for the method, first, working as
Be set under some revolving speed rotating shuttle fuel feeding oil mass be it is stable, under another revolving speed, readjust again, and this adjusting need
Will trial and error repeatedly, or the personnel with certain experiences could complete within the not short time, and whole process is cumbersome and time-consuming；Its
Two, when sewing machine needs work in the state of different rotating speeds frequent switching, theoretically need the frequent adjusting oil mass of personnel
Adjustment pin, but it is impractical.This is a kind of comparison passively clumsy adjusting method.In practical sewing process, still
It is excessive to be easier to lead to the problem of fuel delivery, thus generate the wet suture of oil immersion and fabric as a result, had an impact to sewing quality.
Summary of the invention
The purpose of this utility model is the presence of the above problem in view of the prior art, proposes a kind of plunger pump of sewing machine
Oil supply mechanism, the technical problem to be solved by the utility model is to how to guarantee stable fuel delivery, to guarantee the product of sewing
Matter.
The purpose of this utility model can be realized by the following technical scheme: a kind of plunger pump oil supply mechanism of sewing machine,
Sewing machine includes pedestal, this plunger pump oil supply mechanism includes the assembly of the plunger pump and fuel tank being set on the base, the plunger pump
The oil return nozzle of component is connected to by oil return pipe with the oil return opening of the fuel tank, which is characterized in that the assembly of the plunger pump with it is described
Pressure control valve is equipped between fuel tank, the pressure control valve includes valve body and piston, and the valve body is divided by the piston
Air chamber and oil pocket, the oil pocket pass through the fuel feed pump oil-feed port phase with the fuel oil supply nozzle of assembly of the plunger pump and the fuel tank respectively
It is connected to, is additionally provided with the pressure release oil nozzle being connected to oil pocket on the valve body, the pressure release oil nozzle is connected with the fuel tank, the sky
Being additionally provided in air cavity can make piston be resisted against the elastic component for sealing pressure release oil nozzle on pressure release oil nozzle.
This plunger pump oil supply mechanism between assembly of the plunger pump and fuel tank by being arranged pressure control valve, and piston is in elastic component
And can be contacted with pressure release oil nozzle under the action of atmospheric pressure, close pressure release oil nozzle, when the pressure of oil pocket be consistently less than elastic component and
When the power that atmospheric pressure applies, pressure release oil nozzle will also be in normally off always.When the oil pressure of oil pocket is higher by elastic component and atmospheric pressure
When the power of application, piston is jacked up, and generates pressure relief opening, and pressure release oil nozzle is connected to oil pocket, and oil pressure passes through the pressure release of pressure release oil nozzle at this time.
I.e. in the pump shaft slow-speed of revolution, oil control valve assembly is not involved in work, and in the high revolving speed of pump shaft, oil control valve assembly participates in work
Make, realize pressure release, so that the connection by pressure release oil nozzle and the circulation closed, realize the pressure balance of oil pocket, guarantee stable
Fuel delivery, to guarantee the quality of sewing.
In the plunger pump oil supply mechanism of above-mentioned sewing machine, regulator bolts, the pressure regulation spiral shell are additionally provided on the valve body
Bolt is connect with the valve body by being threadedly engaged, and the elastic component is spring, and one end of the regulator bolts is protruded into air chamber
It leans with the spring.The oil pressure of fuel feed pump does not exceed a certain value always, this value is by regulator bolts according to rotating shuttle fuel delivery
Carry out set up.
In the plunger pump oil supply mechanism of above-mentioned sewing machine, locking nut is also threaded on the regulator bolts.
Further regulator bolts can be locked by locking nut, avoid loosening.
In the plunger pump oil supply mechanism of above-mentioned sewing machine, one end that the regulator bolts protrude into air chamber has annular
One end of step, the spring is arranged and is resisted against on ring-shaped step, and one end of the piston has mounting post, the spring
The other end is set in mounting post.By above-mentioned setting, stability is preferable, and spring is not susceptible to shake.
In the plunger pump oil supply mechanism of above-mentioned sewing machine, the input end end face of the pressure release oil nozzle is plane, described
It is to flat against between piston and pressure release oil nozzle.By above-mentioned setting, closed effect is preferable.
In the plunger pump oil supply mechanism of above-mentioned sewing machine, the valve body includes valve deck and cylinder, the valve deck and institute
Cylinder screw connection is stated, the regulator bolts pass through the valve deck and are threadedly coupled with the valve deck.Pass through above-mentioned setting, installation
It is more convenient.
In the plunger pump oil supply mechanism of above-mentioned sewing machine, be additionally provided on the valve body inlet nozzle being connected to oil pocket and
Oil outlet, the inlet nozzle and oil outlet pass through the oil-feed port of fuel feed pump and the fuel tank and the fuel oil supply nozzle of assembly of the plunger pump respectively
It is connected.
In the plunger pump oil supply mechanism of above-mentioned sewing machine, the oil return pipe is equipped with three-way connection, the pressure release oil
Mouth is connected to the three-way connection.Pressure release oil nozzle directly passes through three-way connection and is connected in oil return pipe, flows back into fuel tank.
In the plunger pump oil supply mechanism of above-mentioned sewing machine, it is additionally provided at the oil return nozzle of the assembly of the plunger pump for adjusting
Save the fuel-flow control pin of sewing-machine rotating shuttle fuel delivery.This fuel feeding end adjusting method and fuel-flow control pin adjusting method phase at oil return nozzle
In conjunction with the main passive dual regulation of realization prevents fuel feeding excessive to realize the fuel delivery for precisely controlling rotating shuttle part.
Compared with prior art, the plunger pump oil supply mechanism of this sewing machine has the advantage that
1, in the pump shaft slow-speed of revolution, oil control valve assembly is not involved in work, in the high revolving speed of pump shaft, oil pressure cntrol valve group
Part participates in work, realizes pressure release, so that the connection by pressure release oil nozzle and the circulation closed, realize the pressure balance of oil pocket, protect
Stable fuel delivery is demonstrate,proved, to guarantee the quality of sewing.
2, the oil pressure of fuel feed pump does not exceed a certain value always, this value by regulator bolts according to the needs of rotating shuttle fuel delivery into
Row is set up.
3, this fuel feeding end adjusting method fuel-flow control pin adjusting method at oil return nozzle combines, and realizes main passive Double regulating
Section prevents fuel feeding excessive to realize the fuel delivery for precisely controlling rotating shuttle part.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the plunger pump oil supply mechanism of this sewing machine.
Fig. 2 is that the plunger pump oil supply mechanism of this sewing machine saves the schematic diagram after pedestal.
Fig. 3 is the cross-sectional view of pressure control valve.
In figure, 1, pedestal；2, assembly of the plunger pump；3, fuel tank；4, pressure control valve；4a, valve body；4a1, air chamber；4a2,
Oil pocket；4b, pressure release oil nozzle；4c, inlet nozzle；4d, oil outlet；5, three-way connection；6, piston；7, regulator bolts；8, locking nut；
9, spring.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1-3, sewing machine includes pedestal 1, this plunger pump oil supply mechanism includes the plunger pump being arranged on pedestal 1
Component 2 and fuel tank 3, assembly of the plunger pump 2 is identical as existing rotating shuttle feeding plunger 2 structures of pump assembly, the oil return of assembly of the plunger pump 2
Be additionally provided with the fuel-flow control pin for adjusting sewing-machine rotating shuttle fuel delivery at mouth, specific structure with it is existing identical.Plunger pump group
The oil return nozzle of part 2 is connected to by oil return pipe with the oil return opening of fuel tank 3.
Specifically, being equipped with pressure control valve 4 between assembly of the plunger pump 2 and fuel tank 3, pressure control valve 4 includes valve body 4a
With piston 6, valve body 4a is divided into air chamber 4a1 and oil pocket 4a2 by piston 6, be additionally provided on valve body 4a be connected to oil pocket 4a2 into
Oil nozzle 4c and oil outlet 4d, inlet nozzle 4c and oil outlet 4d pass through the oil-feed port and assembly of the plunger pump 2 of fuel feed pump and fuel tank 3 respectively
Fuel oil supply nozzle be connected.
The pressure release oil nozzle 4b being connected to oil pocket 4a2 is additionally provided on valve body 4a, oil return pipe is equipped with three-way connection 5, pressure release oil
Mouth 4b is connected to three-way connection 5.Certainly, pressure release oil nozzle 4b can also be directly connected by other pipeline with fuel tank 3.Air chamber
Being additionally provided in 4a1 can make piston 6 be resisted against the elastic component for sealing pressure release oil nozzle 4b on pressure release oil nozzle 4b, and elastic component is spring
The input end end face of 9, pressure release oil nozzle 4b are plane, are flatted against between the piston 6 and pressure release oil nozzle 4b.Piston 6 is in bullet
Property part and atmospheric pressure under the action of can be contacted with pressure release oil nozzle 4b, close pressure release oil nozzle 4b, when the pressure of oil pocket 4a2 is small always
When the power that elastic component and atmospheric pressure apply, pressure release oil nozzle 4b will also be in normally off always.When the oil pressure of oil pocket 4a2 is higher by
When the power that elastic component and atmospheric pressure apply, piston 6 is jacked up, and generates pressure relief opening, and pressure release oil nozzle 4b is connected to oil pocket 4a2, at this time
Oil pressure passes through the 4b pressure release of pressure release oil nozzle.I.e. in the pump shaft slow-speed of revolution, 4 component of pressure control valve is not involved in work, turns in pump shaft height
When fast, 4 component of pressure control valve participates in work, realizes pressure release, thus by the circulation for being connected to closing of pressure release oil nozzle 4b, it is real
The pressure balance of existing oil pocket 4a2, guarantees stable fuel delivery, to guarantee the quality of sewing.
Furthermore, regulator bolts 7 are additionally provided on valve body 4a, valve body 4a includes valve deck and cylinder, valve deck and cylinder
It is threadedly coupled, regulator bolts 7 pass through valve deck and protrude into air chamber 4a1 and be threadedly coupled with valve deck, and regulator bolts 7 protrude into air chamber
One end of 4a1 has ring-shaped step, and one end of spring 9 is arranged and is resisted against on ring-shaped step, and one end of piston 6 has installation
The other end of column, spring 9 is set in mounting post.Locking nut 8 is also threaded on regulator bolts 7.The oil pressure of fuel feed pump
Always a certain value is not exceeded, this value set up according to rotating shuttle fuel delivery by regulator bolts 7, is led to after pressure setting
It crosses and is locked with locking nut 8.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (9)
1. a kind of plunger pump oil supply mechanism of sewing machine, sewing machine includes pedestal (1), this plunger pump oil supply mechanism includes that setting exists
The oil return nozzle of assembly of the plunger pump (2) and fuel tank (3) on pedestal (1), the assembly of the plunger pump (2) passes through oil return pipe and the oil
The oil return opening of case (3) is connected to, which is characterized in that pressure control valve is equipped between the assembly of the plunger pump (2) and the fuel tank (3)
(4), the pressure control valve (4) includes valve body (4a) and piston (6), and the valve body (4a) is divided into sky by the piston (6)
Air cavity (4a1) and oil pocket (4a2), the oil pocket (4a2) by fuel feed pump respectively with the fuel oil supply nozzle of assembly of the plunger pump (2) and institute
The oil-feed port for stating fuel tank (3) is connected, and the pressure release oil nozzle (4b) being connected to oil pocket (4a2), institute are additionally provided on the valve body (4a)
It states pressure release oil nozzle (4b) to be connected with the fuel tank (3), being additionally provided in the air chamber (4a1) can be such that piston (6) is resisted against
The elastic component for sealing pressure release oil nozzle (4b) on pressure release oil nozzle (4b).
2. the plunger pump oil supply mechanism of sewing machine according to claim 1, which is characterized in that also set on the valve body (4a)
Have regulator bolts (7), the regulator bolts (7) are connect with the valve body (4a) by being threadedly engaged, and the elastic component is spring
(9), one end of the regulator bolts (7) is protruded into air chamber (4a1) and leans with the spring (9).
3. the plunger pump oil supply mechanism of sewing machine according to claim 2, which is characterized in that on the regulator bolts (7)
Also it is threaded with locking nut (8).
4. the plunger pump oil supply mechanism of sewing machine according to claim 3, which is characterized in that the regulator bolts (7) are stretched
The one end for entering air chamber (4a1) has ring-shaped step, and one end of the spring (9) is arranged and is resisted against on ring-shaped step, described
One end of piston (6) has mounting post, and the other end of the spring (9) is set in mounting post.
5. the plunger pump oil supply mechanism of sewing machine described in any one of -4 according to claim 1, which is characterized in that described to let out
The input end end face of pressure oil mouth (4b) is plane, is flatted against between the piston (6) and pressure release oil nozzle (4b).
6. the plunger pump oil supply mechanism of the sewing machine according to any one of claim 2-4, which is characterized in that the valve
Body (4a) includes valve deck and cylinder, and the valve deck is connect with the cylinder screw, the regulator bolts (7) pass through the valve deck and
It is threadedly coupled with the valve deck.
7. the plunger pump oil supply mechanism of sewing machine described in any one of -4 according to claim 1, which is characterized in that the valve
The inlet nozzle (4c) and oil outlet (4d) being connected to oil pocket (4a2), the inlet nozzle (4c) and oil outlet are additionally provided on body (4a)
(4d) is connected by fuel feed pump with the fuel oil supply nozzle of the oil-feed port of the fuel tank (3) and assembly of the plunger pump (2) respectively.
8. the plunger pump oil supply mechanism of sewing machine described in any one of -4 according to claim 1, which is characterized in that described time
Oil pipe is equipped with three-way connection (5), and the pressure release oil nozzle (4b) is connected to the three-way connection (5).
9. the plunger pump oil supply mechanism of sewing machine described in any one of -4 according to claim 1, which is characterized in that the column
Fill in the fuel-flow control pin being additionally provided at the oil return nozzle of pump assembly (2) for adjusting sewing-machine rotating shuttle fuel delivery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920096707.5U CN209443191U (en) | 2019-01-21 | 2019-01-21 | A kind of plunger pump oil supply mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920096707.5U CN209443191U (en) | 2019-01-21 | 2019-01-21 | A kind of plunger pump oil supply mechanism of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209443191U true CN209443191U (en) | 2019-09-27 |
Family
ID=68017872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920096707.5U Active CN209443191U (en) | 2019-01-21 | 2019-01-21 | A kind of plunger pump oil supply mechanism of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209443191U (en) |
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2019
- 2019-01-21 CN CN201920096707.5U patent/CN209443191U/en active Active
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