CN218711389U - Lubricating structure of sewing machine main shaft - Google Patents

Abstract

The utility model provides a lubricating structure of sewing machine main shaft belongs to sewing machine technical field. The main shaft lubricating structure solves the technical problems that an existing main shaft lubricating structure of a sewing machine is limited in lubricating range and insufficient in lubricating effect. This lubricating structure of sewing machine main shaft, sewing machine include the casing, have the main shaft hole that transversely link up the setting on the casing, lubricating structure includes that coaxial the inlaying is located the downthehole lubricating ring cover of main shaft, the oil duct that the orientation set up about still having on the casing, the outer peripheral face of lubricating ring cover has the inlet port of this lubricating ring cover inner chamber of intercommunication, the outer end port aperture size of inlet port is less than the lower extreme port aperture size of oil duct, the lower extreme port with the outer end port is linked together, and makes and form the oil storage tank between the inner wall of oil duct and this lubricating ring cover outer peripheral face. The utility model discloses do benefit to and promote lubricated scope and lubricated effect.

Description

Lubricating structure of sewing machine main shaft

Technical Field

The utility model belongs to the technical field of sewing machine, a lubricating structure of sewing machine main shaft is related to.

Background

In the sewing machine, lubrication is very important, and transmission main shaft's lubrication is especially important, and for the guarantee main shaft rotates smoothly, can set up the axle sleeve as the slide bearing cooperation lubrication in the casing more, sewing machine's lubrication mode adopts the oil circuit design of fuel feeding and oil absorption more at present, and the cooperation oil pump subassembly makes the continuous circulation of lubricating oil realize continuously lubricating.

For example, patent No. CN205576475U discloses an oil supply system for a crank arm type sewing machine, which comprises an oil storage box, an oil pump set, an oil delivery passage, an oil suction passage, an oil pumping passage and an oil supply passage. The oil pump set comprises an oil supply pump, a first oil suction pump and a second oil suction pump, the oil delivery flow passage is connected with the oil storage box and the oil supply pump, the oil delivery flow passage is connected with the oil supply pump and comprises a first oil supply manifold extending to a sewing machine head and a second oil supply manifold extending to the sewing machine body, the oil suction flow passage is connected with the first oil suction pump and extends to the sewing machine head, the oil suction flow passage is connected with the second oil suction pump and extends to a sewing machine arm, and the oil supply flow passage is connected with the oil suction pump and corresponds to a starting gear of the oil pump set.

The lubricating system can realize continuous oil supply and lubrication, but the existing sewing machine mostly passes through the lubricating ring sleeve of the main shaft and the main shaft friction pair through the oil duct when supplying oil to the lubricating ring sleeve of the main shaft, so that the lubricating range is limited, and the lubricating effect is insufficient.

Disclosure of Invention

The utility model discloses to the above-mentioned problem that prior art exists, provide a lubricating structure of sewing machine main shaft, the utility model aims to solve the technical problem that: the main shaft of the existing sewing machine has insufficient lubricating effect.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a lubricating structure of sewing machine main shaft, sewing machine includes the casing, have the main shaft hole that transversely link up the setting on the casing, lubricating structure includes that coaxial the inlaying is located the downthehole lubricating ring cover of main shaft, a serial communication port, the oil duct that the direction set up about still having on the casing, the outer peripheral face of lubricating ring cover has the inlet port of this lubricating ring cover inner chamber of intercommunication, the outer end port aperture size of inlet port is less than the lower extreme port aperture size of oil duct, the lower extreme port with the outer end port is linked together, and makes and form the oil storage tank between the inner wall of oil duct and this lubricating ring cover outer peripheral face.

The shell is an outer protective shell and an installation platform of a transmission main shaft, an oil pump set and other components of the sewing machine, a transversely through main shaft hole is formed in the shell, a lubricating ring sleeve matched with the transmission main shaft is fixedly embedded in the main shaft hole, and lubricating oil can be filled between the transmission main shaft and the lubricating ring sleeve to form an oil film during working, so that the transmission main shaft can smoothly rotate. The oil duct is arranged on the machine shell in the vertical direction, the oil inlet hole communicated with the inner cavity is formed in the peripheral face of the lubricating ring sleeve, the aperture size of the outer end port of the oil inlet hole is smaller than that of the lower end port of the oil duct, the oil duct is communicated with the oil inlet hole relatively, the peripheral face of the lubricating ring sleeve is arc-surface-shaped, an oil storage groove can be formed between the inner wall of the oil duct and the arc-shaped peripheral face of the lubricating ring sleeve, and therefore due to the liquid flowing splashing effect, when lubricating oil in the oil duct flows down to enter the oil inlet hole, a part of the lubricating oil can be collected in the oil storage groove, the lubricating oil in the oil storage groove can gradually flow to two ends of the lubricating ring sleeve along a fit gap existing between the lubricating ring sleeve and a spindle hole, the peripheral part and the extending part of the transmission spindle are lubricated from top to bottom, and the lubricating range and the lubricating effect are improved.

In the lubricating structure of the sewing machine spindle, the outer end port is located at the top of the lubricating ring sleeve, the lower end port is opposite to the outer end port, and the oil storage tank is provided with two parts and is respectively arranged at two sides of the outer end port. Do benefit to like this and all form the oil storage tank in the both sides of inlet port outer end port, do benefit to and promote lubricating oil and pass through the probability and the homogeneity of fit clearance to peripheral lubrication, improve lubricated effect.

In the lubricating structure of the sewing machine spindle, the shell is fixedly provided with the oil retention box capable of storing lubricating oil, the bottom of the oil retention box is provided with an insertion tube which can be communicated with the inner cavity of the oil retention box, and the insertion tube is inserted into the upper end port of the oil duct. The intubate does benefit to effectively fixing a position stagnant oil box with the oil duct cooperation like this, ensures that it continues reliably to supply oil to the oil duct.

In the lubricating structure of the sewing machine main shaft, the lower end of the insertion tube is spaced from the outer peripheral surface of the lubricating ring sleeve. Like this the space between intubate and the lubricated ring collar peripheral face is bigger, can make the lubricating oil that gushes out through the intubate form the diffusion effect, and then in lubricating oil flows more to the oil storage tank to form effectual oil supplementation effect, guarantee more lubrication effect on a large scale.

In the lubricating structure of the sewing machine main shaft, the oil passage is vertically arranged, and the oil inlet hole is radially arranged along the lubricating ring sleeve. Therefore, smooth flowing of lubricating oil is facilitated, and circulating lubricating oil can effectively reach the friction pair.

In the lubricating structure of the sewing machine main shaft, the inner cavity side wall of the lubricating ring sleeve is provided with the annular groove arranged around the circumferential direction, and the inner end port of the oil inlet hole is positioned on the inner wall of the annular groove. Lubricating oil that flows in through the inlet port can flow around the annular like this, and then forms the lubrication to the periphery of whole transmission main shaft, ensures lubricated even effect.

In the lubricating structure of the sewing machine spindle, the rolling bearing is coaxially embedded in the spindle hole and is adjacent to the lubricating ring sleeve. Therefore, the rolling bearing can be matched with the lubricating ring sleeve to support the transmission main shaft, the concentricity of the transmission main shaft is favorably ensured, and meanwhile, lubricating oil flowing out from the end part of the lubricating ring sleeve can continuously lubricate the rolling bearing, so that the lubricating range and the lubricating effect are prompted.

In the lubricating structure of the sewing machine main shaft, the lubricating ring sleeve is made of a copper alloy material. The copper alloy has high hardness, good wear resistance and corrosion resistance, is not easy to generate seizure phenomenon, and is beneficial to ensuring the smooth work of the transmission main shaft.

In the lubricating structure of the sewing machine spindle, the lubricating structure further comprises an oil pump set and an oil spraying pipe which are fixedly arranged in the machine shell, one end of the oil spraying pipe is communicated with the oil outlet end of the oil pump set, the middle section of the oil spraying pipe is provided with a shunt joint arranged in the oil stagnation box, and the shunt joint is communicated with the insertion pipe. Like this the oil pump group can drive the lubricating oil of area pressure and pass through the reposition of redundant personnel and connect the entering intubate, do benefit to the promotion velocity of flow and then the effect of splashing of lubricating oil when breaking away from the intubate is stronger, and the guarantee is to the benefit of oil tank's oil effect.

In the lubricating structure of the sewing machine spindle, the opening of the oil stagnation box is arranged upwards, the oil circulation pipe for communicating the inner cavity of the oil stagnation box with the inner cavity of the machine shell is arranged on the oil stagnation box, and the other end of the oil injection pipe is arranged upwards and is positioned right above the oil stagnation box. Like this spout the lubricating oil that oil pipe other oil end upwards sprays area and press and can splash to all around after blockking by the casing top cap, sewing machine parts on a large scale produces the lubrication action around, and the stagnant oil box that the below set up simultaneously can collect the ordinary pressure lubricating oil that spouts oil pipe core area drippage and save and collect, again through oil pipe can the secondary distribution to the casing inner chamber everywhere vice department of friction carry out the pertinence lubrication, lubricating oil falls to can offset the initial velocity in stagnant oil box and keep steady state, still can last the oil supply through stock lubricating oil when spouting oil pipe spun flow has the difference because of operating condition simultaneously, form the buffer allowance and reduce the operating mode influence, and then the reliability of guarantee lubrication effect.

Compared with the prior art, the utility model has the advantages as follows:

in this lubricating structure of sewing machine main shaft, lubricating oil in the oil duct flows down and can have part to collect in the oil storage tank because of the effect of splashing when getting into the inlet port, and lubricating oil in the oil storage tank can follow the fit clearance that exists between lubricated ring cover and the main shaft hole and flow gradually to lubricated ring cover's both ends department, and top-down lubricates peripheral part and the part that the transmission main shaft stretches out, does benefit to promotion lubrication range and lubricated effect.

Drawings

Fig. 1 is a schematic top view of the present embodiment.

Fig. 2 isbase:Sub>A schematic view of the cross-sectional structurebase:Sub>A-base:Sub>A in fig. 1.

Fig. 3 is an enlarged view of a portion C in fig. 2.

FIG. 4 is a schematic view of a cross-sectional view B-B of FIG. 1 with the drive shaft hidden.

Fig. 5 is a partial sectional structure diagram of the present embodiment.

Fig. 6 is a schematic perspective view of the lubricating collar of the present embodiment.

In the figure, 1, a housing; 11. a spindle hole; 12. an oil duct; 121. a lower end port; 122. an upper end port;

2. lubricating the ring sleeve; 21. an oil inlet hole; 211. an outer end port; 212. an inner short port; 22. a ring groove;

3. an oil storage tank;

4. an oil retention box; 41. inserting a tube;

5. a rolling bearing; 6. an oil pump unit; 7. an oil spray pipe; 8. a tap joint; 9. an oil pipe is communicated; 10. and (5) driving the main shaft.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-6, a lubrication structure of a main shaft of a sewing machine, the sewing machine includes a machine shell 1 and a transmission main shaft 10, the machine shell 1 has a main shaft hole 11 transversely penetrating the main shaft hole, the lubrication structure includes a lubrication ring sleeve 2 coaxially embedded in the main shaft hole 11, the lubrication ring sleeve 2 is sleeved on the periphery of the transmission main shaft 10, the machine shell 1 further has an oil passage 12 arranged in the vertical direction, the outer peripheral surface of the lubrication ring sleeve 2 has an oil inlet 21 communicating with the inner cavity of the lubrication ring sleeve 2, the outer end port 211 of the oil inlet 21 has a smaller aperture size than the lower end port 121 of the oil passage 12, the lower end port 121 is communicated with the outer end port 211, and an oil storage tank 3 is formed between the inner wall of the oil passage 12 and the outer peripheral surface of the lubrication ring sleeve 2 around the outer end port 211. The casing 1 is the outer protective housing and the mounting platform of parts such as the transmission main shaft 10 of sewing machine, oil pump group 6, has transversely link up's main shaft hole 11 on the casing 1 to it is fixed with the lubricated ring cover 2 with transmission main shaft 10 complex to embed in main shaft hole 11, can fill lubricating oil and form the oil film between transmission main shaft 10 and the lubricated ring cover 2 at during operation, ensures that transmission main shaft 10 smoothly rotates. Through the oil duct 12 that sets up the direction from top to bottom on casing 1, and set up the inlet port 21 of intercommunication inner chamber at the outer peripheral face of lubricated ring housing 2, because the aperture size of outer end port 211 is less than the aperture size of lower extreme port 121, and this oil duct 12 communicates with inlet port 21 relatively, the periphery of lubricated ring housing 2 is the cambered surface form, and then can form oil storage tank 3 between the inner wall of oil duct 12 and the cambered peripheral face of lubricated ring housing 2, like this because the effect that liquid flows and splashes, lubricating oil in the oil duct 12 flows down and has some to converge in oil storage tank 3 when getting into inlet port 21, and lubricating oil in the oil storage tank 3 can flow to lubricated ring housing 2 both ends department along the fit clearance that exists between lubricated ring housing 2 and the spindle hole 11 gradually, top-down lubricates peripheral part and the part that transmission main shaft 10 stretches out, do benefit to promotion lubrication range and lubrication effect. Specifically, the outer end port 211 of the oil inlet hole 21 is located at the top of the lubricating ring sleeve 2, the oil inlet hole 21 is radially arranged, the oil passage 12 is vertically arranged, the lower end port 121 of the oil passage 12 is vertically opposite to the outer end port 211 of the oil inlet hole 21, and the oil storage tank 3 has two positions and is respectively arranged at two sides of the outer end port 211. The oil storage grooves 3 are formed on the two sides of the outer end port of the oil inlet hole 21, the probability and uniformity of lubricating oil on the periphery through fit clearance are improved, and the lubricating effect is improved. The inner cavity side wall of the lubricating ring sleeve 2 is provided with a ring groove 22 arranged around the circumferential direction, and an inner end port 212 of the oil inlet hole 21 is positioned on the inner wall of the ring groove 22. Thus, the lubricating oil flowing in through the oil inlet hole 21 can flow around the annular groove 22, so that the whole periphery of the transmission main shaft 10 is lubricated, and the uniform lubrication effect is ensured. The lubricating ring sleeve 2 is a copper alloy material piece, such as a ZCuSn10Pb1 material piece. The copper alloy has high hardness, good wear resistance and corrosion resistance, is not easy to cause seizure, and is beneficial to ensuring the smooth work of the transmission main shaft 10. Further, an oil retention box 4 capable of storing lubricating oil is fixedly arranged on the machine shell 1, an insertion tube 41 capable of being communicated with an inner cavity of the oil retention box 4 is arranged at the bottom of the oil retention box 4, and the insertion tube 41 is inserted into an upper end port 122 of the oil passage 12. Therefore, the insertion pipe 41 is matched with the oil channel 12, so that the oil retention box 4 is effectively positioned, and the oil channel 12 is continuously and reliably supplied with oil. The lower end of the insert tube 41 is spaced from the outer peripheral surface of the lubricating collar 2. The space between the insertion pipe 41 and the outer peripheral surface of the lubricating ring sleeve 2 is larger, so that lubricating oil gushing out through the insertion pipe 41 can form a diffusion effect, and then the lubricating oil flows into the oil storage tank 3 more, an effective oil supplementing effect is formed, and a lubricating effect in a wider range is guaranteed.

As shown in fig. 1, 2, 4, and 5, a rolling bearing 5 is coaxially fitted in the spindle hole 11, and the rolling bearing 5 is adjacent to the lubricating collar 2. Like this antifriction bearing 5 can support transmission main shaft 10 with the cooperation of lubricated ring cover 2, does benefit to the concentricity of guarantee transmission main shaft 10, and the lubricating oil that flows out from lubricated ring cover 2 tip simultaneously can continue to lubricate antifriction bearing 5, suggestion lubricated scope and effect. Lubricating structure still includes the oil pump group 6 and the oil spout pipe 7 that set firmly in casing 1, and oil pump group 6 and oil spout pipe 7 belong to prior art, and the one end of spouting oil spout pipe 7 and the oil outlet end intercommunication of oil pump group 6 should spout the middle section of oil pipe 7 and be equipped with the reposition of redundant personnel joint 8 of arranging in stagnant oil box 4, and reposition of redundant personnel joint 8 is linked together with intubate 41. Like this oil pump package 6 can drive the lubricating oil of area pressure and pass through in the reposition of redundant personnel connects 8 gets into intubate 41, does benefit to the lifting flow rate and then the effect of splashing of lubricating oil is stronger when breaking away from intubate 41, and the guarantee is to the oil supplementation effect of oil storage tank 3. Stagnant oily box 4 is uncovered setting up upwards, has the oil pipe 9 that leads to of this stagnant oily box 4 inner chamber of intercommunication and casing 1 inner chamber on stagnant oily box 4, and the other end of spouting oil pipe 7 sets up and is located this stagnant oily box 4 directly over. Like this the lubricating oil that the other oil end of spout oil pipe 7 upwards sprays the area pressure can splash to all around after blockking by casing 1 top cap, sewing machine parts on a large scale produces the lubrication action around, and the stagnant oil box 4 that the below set up simultaneously can collect the ordinary pressure lubricating oil that spouts oil pipe 7 core region drippage and collect, can secondary distribution again through oil pipe 9 to the casing 1 inner chamber like the vice department of friction in transmission main shaft 10 middle section carries out the pertinence lubrication, lubricating oil falls to can offset the holding state steady with the initial velocity in stagnant oil box 4, still can be continuously supplied oil through stock lubricating oil when spouting oil pipe 7 spun flow has the difference because of operating condition simultaneously, form the buffer capacity and reduce the operating mode influence, and then the reliability of guarantee lubrication effect.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. The utility model provides a lubricating structure of sewing machine main shaft, sewing machine includes casing (1), spindle hole (11) that transversely link up have on casing (1), lubricating structure includes that coaxial the inlaying is located lubricating ring cover (2) in spindle hole (11), a serial communication port, oil duct (12) that the direction set up about still having on casing (1), the outer peripheral face of lubricating ring cover (2) has inlet port (21) with this lubricating ring cover (2) inner chamber intercommunication, outer end port (211) aperture size of inlet port (21) is less than lower extreme port (121) aperture size of oil duct (12), lower extreme port (121) and outer end port (211) intercommunication, and make and form oil storage tank (3) between the inner wall of oil duct (12) and this lubricating ring cover (2) outer peripheral face.

2. The lubrication structure of a main shaft of a sewing machine according to claim 1, wherein the outer end port (211) is located at the top of the lubrication ring sleeve (2), the lower end port (121) is opposite to the outer end port (211), and the oil reservoir (3) has two places and is respectively disposed at both sides of the outer end port (211).

3. The lubrication structure of a main shaft of a sewing machine according to claim 1 or 2, wherein an oil retention box (4) capable of storing lubricating oil is fixedly arranged on the machine shell (1), an insertion tube (41) capable of communicating with an inner cavity of the oil retention box (4) is arranged at the bottom of the oil retention box (4), and the insertion tube (41) is inserted into an upper end port (122) of the oil passage (12).

4. Lubricating structure for a sewing machine main shaft according to claim 3, characterized in that the lower end of the insertion tube (41) is spaced from the outer peripheral surface of the lubricating collar (2).

5. The lubrication structure of a main shaft of a sewing machine according to claim 2, wherein the oil passage (12) is provided in a vertical direction, and the oil inlet hole (21) is provided in a radial direction of the lubricating ring sleeve (2).

6. The lubrication structure of a sewing machine main shaft according to claim 1 or 2, wherein the inner cavity side wall of the lubrication ring sleeve (2) has a circumferential ring groove (22), and the inner end port (212) of the oil inlet hole (21) is located on the inner wall of the ring groove (22).

7. Lubricating structure of sewing machine main shaft according to claim 1 or 2, characterized in that the main shaft hole (11) is also embedded with a rolling bearing (5) coaxially, and the rolling bearing (5) is arranged adjacent to the lubricating ring sleeve (2).

8. Lubricating structure for a main shaft of a sewing machine according to claim 1 or 2, characterized in that the lubricating collar (2) is a piece of copper alloy material.

9. The lubrication structure of a main shaft of a sewing machine according to claim 3, further comprising an oil pump unit (6) and an oil injection pipe (7) fixedly arranged in the housing (1), wherein one end of the oil injection pipe (7) is communicated with the oil outlet end of the oil pump unit (6), a flow dividing joint (8) arranged in the oil retention box (4) is arranged at the middle section of the oil injection pipe (7), and the flow dividing joint (8) is communicated with the insertion pipe (41).

10. The lubrication structure of a spindle of a sewing machine according to claim 9, wherein the oil stagnation box (4) is disposed with an opening facing upward, the oil stagnation box (4) is provided with an oil pipe (9) communicating an inner cavity of the oil stagnation box (4) with an inner cavity of the housing (1), and the other end of the oil injection pipe (7) faces upward and is located right above the oil stagnation box (4).

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