CN101718027A - Automatic lubrication system of rotating shuttle assembly of embroidery machine - Google Patents

Abstract

The present invention relates to an automatic lubricating system for a rotary hook assembly of an embroidery machine, in particular to a rotary hook assembly lubricating system composed of a rotary hook, a rotary hook shaft, and a rotary hook sleeve. The through-hole end of the blind hole communicates with the inner cavity of the rotary hook, and an oil through hole communicated with the blind hole is provided on the surface of the rotary hook shaft. The invention can not only continuously refuel the rotary hook, the rotary hook shaft and its bushing , and can cool and clean the above components.

Description

Automatic Lubricating System for Hook Components of Embroidery Machine

technical field

The invention relates to an automatic lubricating system for an embroidery machine rotary hook assembly, in particular to an automatic lubrication system for an embroidery machine rotary hook assembly composed of a rotary hook, a rotary hook shaft and a rotary hook shaft sleeve.

Background technique

The rotary hook assembly of the existing embroidery machine includes a rotary hook, a rotary hook shaft sleeve, and a rotary hook shaft. The shuttle shaft sleeve is easy to wear and needs to be lubricated frequently, and the commonly used lubrication method is to manually or automatically drop the lubricating oil into the oil groove set on the hook and the needle plate, because the oil in the oil groove flows to the lubricating parts through multiple oil seepages. The oil seepage hole is small and easy to be blocked by dust, so it is difficult to achieve a good lubricating effect; in addition, because the oil is directly added to the rotary hook, the amount of oil injected cannot be controlled, and the oil in the rotary hook is often thrown onto the embroidery. Oil stains are produced on the embroidery, and the quality of the embroidery is unqualified. Therefore, in actual use, there is little or no oil on the rotary hook, which causes the rotary hook and the rotary hook shaft to be easily worn. In order to reduce the wear of the rotary hook and the rotary hook shaft, improve the lubricating effect, and prevent the lubricating oil from being thrown onto the embroidery, a Chinese utility model patent with the patent number "200820062628.6" and the name "automatic refueling mechanism for the rotary hook of an embroidery machine" has disclosed a An automatic refueling mechanism for a rotary hook, which is provided with a shaft center through hole on the axis of the rotary hook shaft, one end communicates with the oil control mechanism, and the other end communicates with the rotary hook. The automatic refueling mechanism for the rotary hook with this structure can only Refueling of the rotary hook, neither the rotary hook shaft and the rotary hook sleeve, nor the scissors and other parts around the rotary hook that need to be lubricated. Lubrication problems of adjacent components.

Contents of the invention

The purpose of the present invention is to provide an automatic lubrication system for the rotary hook assembly of an embroidery machine, which can not only effectively lubricate the rotary hook, but also effectively lubricate the rotary hook shaft and its bushing.

A further object of the present invention is to provide an automatic lubrication system for the rotary hook assembly of an embroidery machine, which can not only effectively lubricate the rotary hook assembly, but also clean and cool the rotary hook assembly.

The purpose of the present invention is achieved through the following technical solutions:

An automatic lubrication system for a rotary hook assembly of an embroidery machine, comprising a rotary hook assembly and an oil supply device for the rotary hook assembly. The rotary hook assembly includes a rotary hook, a rotary hook shaft, and a rotary hook shaft sleeve. The hook is fixedly connected, and the other end is connected with the main transmission shaft through the meshing transmission part (25). An axial blind hole is provided, and the through hole end communicates with the rotary hook. On the surface of the rotary hook shaft, there is at least one oil through hole that communicates with the blind hole. At least one guide hole is provided on the rotary hook sleeve. The oil hole is provided with an oil delivery hole corresponding to the position of the oil guide hole on the box body. One end of the oil delivery hole communicates with the oil guide hole, and the other end is sealed and fixedly connected with the oil supply device;

An oil guide groove is arranged on the outer surface of the part of the rotary hook shaft that matches with the rotary hook sleeve, and the oil through hole is arranged on the oil guide groove;

The oil guiding groove is helical and arranged along the axial direction of the hook shaft;

An oil storage tank is arranged on the outer surface of the rotary hook sleeve provided with the oil guide hole;

The oil supply device is a high-pressure oil mist generating device;

The high-pressure oil mist generating device is composed of a high-pressure air source, a water filter, an oil reservoir, an electronic valve, a check valve, and an airflow regulating valve connected sequentially through an air guide tube, and the electronic valve is controlled by an electronic component to close its timing switch. , the air guide tube is provided with at least one branch air guide tube, and the branch air guide tube is sealed and fixedly connected with the oil delivery hole on each embroidery machine, and an air flow regulating valve is arranged on each branch air guide tube;

Between the high-pressure air source and the airflow regulating valve, an airflow branch circuit consisting of a branch circuit water filter, a branch circuit electronic valve and a branch circuit check valve) is connected in sequence, and the opening and closing of the electronic valve is determined by the Electronic component control;

The electronic component is a time relay;

The electronic component is a program-controlled switch.

Since the rotary hook shaft of the present invention is provided with an axial blind hole in its axis, and an oil through hole connected with the blind hole is provided on the surface matched with the rotary hook shaft, the lubricating oil sequentially passes through the oil delivery holes arranged on the box body. The hole and the oil guide hole set on the rotary hook shaft cover enter the rotary hook shaft, the rotary hook shaft cover and the rotary hook, so the lubricating oil can be easily filled into the rotary hook, the rotary hook shaft and the rotary hook shaft cover, and can be simultaneously Automatically and effectively lubricate the rotary hook, rotary hook shaft and rotary hook sleeve; the lubricating oil flows directly from the oil supply device to the rotary hook, rotary hook shaft and shaft sleeve, which is not easy to be blocked and does not leak oil, and the rotary hook can be continuously The components are oiled, so that the hook components are continuously lubricated, which can not only increase the life of the rotating components, but also increase the rotation speed of the hook and its shaft, and improve work efficiency;

Due to the sealing and rotating connection between the rotary hook shaft with the blind hole in the shaft center and the oil supply device, automatic and continuous lubrication can be carried out on the rotary hook, rotary hook shaft and rotary hook sleeve without stopping the machine, which improves the surface area. The operating efficiency of the whole machine improves the productivity;

The oil mist generator of this lubrication system is composed of an air compressor connected to an oil reservoir. When the compressed air flows through the air guide pipe, a pressure difference is generated in the air guide pipe and the oil reservoir to generate oil mist, so the oil mist and oil are both At room temperature and with a certain pressure, the mixture of oil and oil mist directly refuels the hook through the channel connected by the oil delivery hole and the blind hole in the shaft center of the hook shaft, and at the same time delivers the normal temperature airflow to the hook assembly and its components. Around, the airflow can blow out the substances floating into the hook assembly and scissor assembly due to friction between the upper thread and the needle, between the upper thread and the bottom thread and the hook when the embroidery needle passes through the embroidery fabric. Clean and cool the rotary hook and its surrounding components while effectively lubricating the hook and its surrounding components, preventing component wear and damage caused by frictional heat generation and debris blockage, and improving the running accuracy and work efficiency of components .

After the oil-air mixture is blown from the through hole in the hook shaft to the end surface of the inner cavity of the hook with the airflow, the airflow will spread from the inside to the outside due to the rapid rotation of the hook The gear ring and other parts play a lubricating role.

Description of drawings

Fig. 1 is the schematic diagram of the automatic lubrication system of the rotary hook assembly of the embroidery machine with the structure of the present invention;

Figure 2 is an enlarged view of the structure of the rotary hook shaft and the rotary hook shaft sleeve;

Fig. 3 is a schematic diagram of the oil mist generator of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

As shown in Figures 1 and 2, the automatic lubrication system for the rotary hook assembly of an embroidery machine of the present invention includes a rotary hook assembly oil supply device and a rotary hook assembly, and the rotary hook assembly includes a rotary hook 27, a rotary hook shaft 1, and a rotary hook shaft sleeve 10, One end of the rotary hook shaft 1 is fixedly connected with the rotary hook 27, and the other end is connected with the main transmission shaft 24 through the meshing gear. The shaft sleeves 10 are connected in rotation, and the rotary hook shaft 1 is provided with an axial blind hole 4, and the through hole end of the blind hole 4 communicates with the inner cavity of the rotary hook 27. A spiral oil guide groove 2 is arranged axially on the outer surface of the matching part, three oil passage holes 3 leading to the blind hole 4 are arranged on the oil guide groove 2, and one oil guide hole is arranged on the shaft sleeve 10 9. An oil delivery hole 7 is provided on the side wall of the box body 8 parallel to the main transmission shaft 24. One end of the oil delivery hole 7 leads to the oil delivery hole 9, and the other end is sealed with the branch air pipe 23 of the lubricating device 26. Fixed connection, so that lubricating oil enters between the hook shaft 1 and the bushing 10 through the oil delivery hole 7 and the oil guide hole 9, and lubricates the entire hook shaft 1 and the bushing 10 under the guidance of the oil guide groove 2, and then passes through the oil passage hole 3 flows into the blind hole 4 provided on the rotary hook shaft 1 and flows into the rotary hook 27, which not only lubricates the rotary hook 27, but also lubricates the mating surface of the rotary hook shaft 1 and the rotary hook sleeve 10, in order to make the lubricating oil more Smoothly flow into the blind hole 4 in the rotary hook shaft 1 and between the rotary hook sleeve and the rotary hook shaft to improve the lubrication efficiency. Three oil guide holes 9 are arranged on the shaft sleeve 10, and an oil storage tank is arranged at the oil guide hole 9 5. The blind hole 4 can save lubricating oil and improve the lubricating effect.

The oil guide groove 2 can also adopt other shapes, such as straight line and oblique shape. Setting the oil guide groove 2 can improve the lubrication effect of the rotary hook shaft and the rotary hook shaft sleeve, and is beneficial to the lubricating oil between the rotary hook shaft and the rotary hook shaft sleeve. The flow of oil is better with the spiral oil guide groove 2.

In order to better adjust the delivery amount of lubricating oil on each branch airway, a flow regulator 11 is provided on each branch airway.

As shown in Figures 1, 2, and 3, the oil supply device of the present invention adopts a high-pressure oil mist generating device 26, and the oil mist generating device 26 is composed of a high-pressure gas source 15, a water filter 18, an oil reservoir 19, an electronic valve 20, a The return valve 12' is connected sequentially through the air guide tube 22. The electronic valve 20 is controlled by a time relay, and the timing switch can also be controlled by a program-controlled switch or other electronic components 21 to close, so as to realize the control of the embroidery machine rotary hook 27, rotary hook shaft 1 and its axis. Continuous or intermittent oil supply between the mating surfaces of the sleeve 10, the air guide pipe 22 and the oil delivery hole 7 are sealed and fixedly connected through the sealing connector 6, and a flow regulator 11 is arranged on the branch air guide pipe 23, which can be connected between the high pressure air source 15 and the air flow The regulating valves 11 are connected in parallel with the air flow branch circuit composed of the branch circuit water filter 14, the branch circuit electronic valve 13 and the branch circuit check valve 12. The opening and closing of the branch circuit electronic valve 13 is controlled by the above-mentioned electronic component 21. The air flow branch is set to supply high-pressure air source to the matching surface between the rotary hook and the rotary hook shaft and the shaft sleeve as required, so as to keep the rotary hook and its surroundings clean. The electronic components are powered by the power supply 16 and controlled by the switch 17 On and off of electricity.

With the high-pressure oil mist generating device 26 of this structure, the air flow passes through the air guide pipe 22 to generate a low-pressure area in the air guide pipe 22, and a pressure difference is generated between the oil reservoir 19 and the air guide pipe 22, thereby generating oil with a certain pressure and normal temperature. mist, so that the air guide pipe 22 is filled with a mixture of oil and oil mist with a certain pressure and normal temperature. Driven by the compressed air, the oil mist can continuously shoot to the storage tank along the sealed passage formed by the air guide pipe 22 and the oil delivery hole 7. Oil groove 5 and oil guide hole 9, so as to continuously add oil to the rotary hook, rotary hook shaft, rotary hook bushing, retaining ring and scissors located near the rotary hook, so that the above components can be continuously lubricated, and oil from the oil hole 3 and the rotary hook The oil and oil mist sprayed from the inner cavity of the hook have a certain pressure, and the airflow blows to the rotary hook 27 and its surrounding parts and materials on the rotary hook 27 and its surroundings, which has the functions of dust removal and heat dissipation; the oil volume of the oil mist is very small And it can be adjusted, and the excess part will be dissipated in the air in the form of mist, so there will be no oil stains on the embroidery, thus greatly improving the service life of the components and the quality of the embroidery and reducing thread breakage. The use of oil mist lubrication also has The antistatic function can effectively eliminate the static electricity generated by friction when the metal-containing embroidery thread passes through the rotary hook, thereby reducing the number of broken and dropped threads caused by the electrostatic adsorption of the embroidery thread. Normal temperature oil mist can reduce the heat generated by the rotating friction of the rotary hook shaft and the shaft sleeve, the heat generated by the friction between the embroidery needle and the embroidery fabric, and the heat generated by the friction between the rotary hook and the embroidery thread, and more effectively reduce the heat generated by the rotary hook and the rotary hook shaft. Wear and tear, improve the life of the above components.

The automatic lubrication system of the rotary hook assembly of the embroidery machine of the present invention is suitable for both single-head embroidery machines and multi-head embroidery machines. The air pipe 23 is sealed and communicated with the oil delivery hole 7 of each embroidery machine.

Lubricating device 26 can select the oil mist lubricating device sold on the market.

The oil delivery hole 7 can be arranged on other side walls or the base of the casing, and the oil storage tank 5 and the oil guide hole 9 are faced to the oil delivery hole 7 when adorned.

Claims (14)

1. automatic lubrication system of rotating shuttle assembly of embroidery machine, comprise rotating shuttle assembly and rotating shuttle assembly fueller, described rotating shuttle assembly comprises rotating shuttle (27), rotary shuttle shaft (1), rotating shuttle axle sleeve (10), one end of described rotary shuttle shaft (1) is fixedlyed connected with rotating shuttle (27), the other end is connected with final drive shaft (24) by engaged transmission parts (25), rotating shuttle axle sleeve (10) is fixedly installed on the rotating shuttle casing (8), be rotatably assorted between rotary shuttle shaft (1) and rotating shuttle axle sleeve (10) and be connected, it is characterized in that: be provided with axial blind hole (4) in the described rotary shuttle shaft (1), be connected with rotating shuttle (27) by its through hole end, the surface of rotary shuttle shaft (1) is provided with at least one oil through (3) that communicates with the region between the heart and the diaphragm hole (4), described rotating shuttle axle sleeve (10) is provided with at least one oil guiding hole (9), casing (8) is provided with and corresponding oil transportation hole, oil guiding hole (9) position (7), one end in this oil transportation hole (7) communicates with oil guiding hole (9), and the other end and fueller are sealedly and fixedly connected.

2. automatic lubrication system of rotating shuttle assembly of embroidery machine as claimed in claim 1, it is characterized in that: the outer surface at the position of matching with rotating shuttle axle sleeve (10) of described rotary shuttle shaft (1) is provided with oil guide groove (2), and described oil through (3) is arranged on the oil guide groove (2).

3. automatic lubrication system of rotating shuttle assembly of embroidery machine as claimed in claim 2 is characterized in that: described oil guide groove (2) is for spirality and along the axial setting of rotary shuttle shaft (1).

4. as one of the every described automatic lubrication system of rotating shuttle assembly of embroidery machine of claim 1-3, it is characterized in that: oil storage tank (5) is set on the outer surface that is provided with oil guiding hole (9) of described rotating shuttle axle sleeve (10).

5. as one of the every described automatic lubrication system of rotating shuttle assembly of embroidery machine of claim 1-3, it is characterized in that: described fueller is hydraulic oil mist generation device (26).

6. automatic lubrication system of rotating shuttle assembly of embroidery machine as claimed in claim 5, it is characterized in that: described high pressure mist of oil transmitting apparatus (26) is by high-pressure air source (15), water filter (18), oil conservator (19), electronic valve (20), check-valves (12 ') and barometric damper (11) connect to form successively by wireway (22), described electronic valve (20) is controlled its timing switch closure by electronic unit (21), wireway (22) is provided with at least one wireway (23), be sealedly and fixedly connected by wireway (23) and oil transportation hole (7) on every embroidery machine, each wireway (23) is provided with barometric damper (11).

7. automatic lubrication system of rotating shuttle assembly of embroidery machine as claimed in claim 6, it is characterized in that: the air-flow branch road that connects to form successively by branch road water filter (14), branch road electronic valve (13) and branch road check-valves (12) in parallel between high-pressure air source (15) and barometric damper (11), the unlatching of described electronic valve with closed by described electronic unit control.

8. automatic lubrication system of rotating shuttle assembly of embroidery machine as claimed in claim 6 is characterized in that: described electronic unit (21) is the time relay.

9. automatic lubrication system of rotating shuttle assembly of embroidery machine as claimed in claim 6 is characterized in that: described electronic unit (21) is a grammed switch.

10. as the every described automatic lubrication system of rotating shuttle assembly of embroidery machine of claim 4, it is characterized in that: described fueller is hydraulic oil mist generation device (26).

11. automatic lubrication system of rotating shuttle assembly of embroidery machine as claimed in claim 10, it is characterized in that: described high pressure mist of oil transmitting apparatus (26) is by high-pressure air source (15), water filter (18), oil conservator (19), electronic valve (20), check-valves (12 ') and barometric damper (11) connect to form successively by wireway (22), described electronic valve (20) is controlled its timing switch closure by electronic unit (21), wireway (22) is provided with at least one wireway (23), be sealedly and fixedly connected by wireway (23) and oil transportation hole (7) on every embroidery machine, each wireway (23) is provided with barometric damper (11).

12. automatic lubrication system of rotating shuttle assembly of embroidery machine as claimed in claim 11, it is characterized in that: the air-flow branch road that connects to form successively by branch road water filter (14), branch road electronic valve (13) and branch road check-valves (12) in parallel between high-pressure air source (15) and barometric damper (11), the unlatching of described electronic valve with closed by described electronic unit control.

13. automatic lubrication system of rotating shuttle assembly of embroidery machine as claimed in claim 11 is characterized in that: described electronic unit (21) is the time relay.

14. automatic lubrication system of rotating shuttle assembly of embroidery machine as claimed in claim 11 is characterized in that: described electronic unit (21) is a grammed switch.

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