CN217298253U

CN217298253U - Sewing machine with oil injection device

Info

Publication number: CN217298253U
Application number: CN202220594696.5U
Authority: CN
Inventors: 毕兴国
Original assignee: Zhejiang Maqi Sewing Machine Co Ltd
Current assignee: Zhejiang Maqi Sewing Machine Co Ltd
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-08-26
Anticipated expiration: 2032-03-18

Abstract

The utility model discloses a sewing machine with an oil spraying device, which comprises a machine head (10) and a needle bar (11), wherein a cavity (101) is arranged in the machine head (10), and the needle bar (11) is arranged on the machine head (10) through the cavity (101); the oil mist generator is characterized by further comprising an oil mist generator (12), a lower mounting hole (102) penetrating through the lower end face of the machine head (10) is formed in the bottom of the cavity (101), the needle rod (11) is mounted in the lower mounting hole (102) through a bearing, an oil duct (103) communicated with the lower mounting hole (102) is formed in the machine head (10), and the oil mist generator (12) is connected with the oil duct (103) through an oil pipe (13). The oil supply channel is arranged at the machine head, the oil mist generating device is additionally arranged outside the machine head, the oil spraying time and time are controlled by the electric control system of the sewing machine, lubricating oil is sprayed out in an atomized manner through the oil mist generator, the oil amount of the oil mist generator is fine and adjustable, and the hidden danger of oil leakage at the needle rod can be prevented.

Description

Sewing machine with oil injection device

Technical Field

The utility model relates to a sewing machine's technical field especially relates to sewing machine with fueling injection equipment.

Background

Compared with a common template machine, the rotary needle bar template machine has certain advantages in stitch consistency and thread breakage rate, but the biggest technical common fault of the rotary needle bar template machine is that the wear rate of a needle bar part is high, the needle bar simultaneously takes into account up-down sliding and radial 360-degree rotation, and a limit plane on the needle bar is always tightly attached to a clamping device for friction. And large oil amount lubrication cannot be continuously carried out at the position of the needle rod, otherwise, oil leakage at the needle rod is caused. In addition, due to the special structure of the needle rod, the oil line cannot be effectively lubricated to the limiting plane.

In the prior art, a pump is used to deliver oil to a machine head, a rod-shaped felt is mounted on the machine head, and the oil is delivered to a gap between a machine frame and a bearing through the rod-shaped felt, for example, a needle bar oil discharging device of a sewing machine with application number 201010289847.8, but the amount of the lubricating oil is still relatively large.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the shortcoming among the prior art, provide the sewing machine with fueling injection equipment.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the sewing machine with the oil injection device comprises a machine head and a needle rod, wherein a cavity is arranged in the machine head, and the needle rod is arranged on the machine head through the cavity; the needle bar is installed in the lower installation hole through a bearing, an oil duct communicated with the lower installation hole is formed in the machine head, and the oil mist generator is connected with the oil duct through an oil pipe. The oil supply channel is arranged at the machine head, the oil mist generating device is additionally arranged outside the machine head, the oil injection time and duration are controlled through the electric control system of the sewing machine, and the oil mass is adjustable.

Preferably, at least two bearings are mounted on the needle rod in the lower mounting hole, a gap is formed between every two adjacent bearings, and the oil outlets of the oil passages are communicated with the gap. The oil liquid is lubricated through the clearance between the bearings, can lubricate the bearings at the upper and lower ends of the clearance simultaneously, and can lubricate the needle rod.

Preferably, the needle rod is provided with a worm wheel, the side wall of the needle rod is provided with a limiting surface, and the worm wheel is limited on the limiting surface of the needle rod through a clamping pin. The worm wheel rotates under the drive of worm, and the worm wheel can drive the needle bar rotatory, and simultaneously through the spacing needle bar of clamp pin, prevent that worm wheel and needle bar from taking place relative rotation, guarantee worm wheel and needle bar synchronous rotation.

Preferably, the worm wheel is an integrated worm wheel, the worm wheel comprises a transmission part and a guide part, the upper end of the transmission part is provided with gear teeth, and the lower end of the transmission part is limited on the needle rod through a clamping pin; all bearings are installed on the guide portion, an oil through hole penetrating through the side wall of the guide portion is formed in the guide portion, and the oil through hole is communicated with the gap. Oil can enter into the gap between guide part and the needle bar through the oil through hole and lubricate the processing, and the guide part makes the stability of needle bar better simultaneously.

Preferably, an upper mounting hole is formed in the upper portion, corresponding to the cavity, of the machine head, a needle rod sleeve assembly is mounted on the upper mounting hole and comprises a lining and a shaft sleeve, the lining is mounted on the machine head through the upper mounting hole, the upper end of the shaft sleeve is fixedly mounted on the lining, the lower end of the shaft sleeve extends into the cavity, and the upper end of the needle rod extends into the shaft sleeve. The needle bar shaft sleeve improves the stability of the upper end of the needle bar, and the needle bar can be positioned and rotated in the shaft sleeve, so that the stability is high.

Preferably, the oil passage comprises a first oil passage and a second oil passage which are communicated with each other, a plug is arranged at a port of the first oil passage, a first pipe joint is installed at a port of the second oil passage, and the oil mist generator is connected with the first pipe joint through an oil pipe.

Preferably, a second pipe joint and a third pipe joint used for being connected with an air source are respectively installed on two sides of the oil mist generator, the oil pipe is connected between the first pipe joint and the second pipe joint, and an oil reservoir is arranged at the lower end of the oil mist generator.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect:

the oil supply channel is arranged at the machine head, the oil mist generating device is additionally arranged outside the machine head, the oil spraying time and time are controlled through the electric control system of the sewing machine, lubricating oil is sprayed out in an atomized mode through the oil mist generator, the oil amount of the oil mist generator is fine and adjustable, and the hidden danger of oil leakage at the needle rod can be prevented.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the structure of the handpiece cavity in FIG. 1 in a longitudinal cross-section.

FIG. 3 is a cross-sectional view of the needle shaft of FIG. 1 at the central axis thereof.

Fig. 4 is a schematic view of the structure of the needle bar and its upper fitting in fig. 1.

Fig. 5 is a schematic diagram of the exploded structure of fig. 4.

The names of the parts indicated by the numerical references in the above figures are as follows:

10-machine head, 101-cavity, 102-lower mounting hole, 103-oil channel, 104-upper mounting hole, 1031-first oil channel, 1032-second oil channel

11-needle bar, 111-limiting surface

12-oil mist generator

13-oil pipe

14-bearing

15-clearance

16-worm wheel, 161-transmission part, 162-guide part, 1611-gear tooth, 1621-oil through hole

17-needle bar sleeve assembly, 171-bushing, 172-bushing

18-plug

19-first pipe joint

20-second pipe joint

21-third pipe joint

22-oil reservoir

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings 1-5 and examples.

Example 1

The sewing machine with the oil spraying device comprises a machine head 10 and a needle bar 11, wherein a cavity 101 is arranged in the machine head 10, and the needle bar 11 is arranged on the machine head 10 through the cavity 101; the sewing machine further comprises an oil mist generator 12, a lower mounting hole 102 penetrating through the lower end face of the machine head 10 is formed in the bottom of the cavity 101, the needle rod 11 is mounted in the lower mounting hole 102 through a bearing, an oil duct 103 communicated with the lower mounting hole 102 is formed in the machine head 10, and the oil mist generator 12 is connected with the oil duct 103 through an oil pipe 13. The lubricating oil is sprayed to the needle rod 11 in an atomized state through the oil mist generator 12, the oil amount of the oil mist generator 12 is finely adjustable, and the hidden danger of oil leakage at the needle rod 11 can be prevented.

At least two bearings 14 are mounted on the needle rod 11 in the lower mounting hole 102, the number of the bearings 14 in the embodiment is two, a gap 15 is arranged between every two adjacent bearings 14, and oil outlets of the oil passages 103 are communicated with the gap 15.

The needle bar 11 is provided with a worm wheel 16, the side wall of the needle bar 11 is provided with a limiting surface 111, the limiting surface 111 is a plane, the number of the limiting surfaces 111 is two, the two limiting surfaces 111 are parallel to each other and are arranged at two sides of the needle bar 11, and the worm wheel 16 is limited on the limiting surface 111 of the needle bar 11 through a clamping pin. The cavity 101 of the handpiece 10 is also provided with a worm, and the worm is meshed and connected with the worm wheel 16.

The worm wheel 16 is an integrated worm wheel, the worm wheel 16 comprises a transmission part 161 and a guide part 162, the upper end of the transmission part 161 is provided with gear teeth 1611, the lower end of the transmission part 161 is cylindrical, and the lower end of the transmission part 161 is limited on the needle rod 11 through a clamping pin. All the bearings 14 are mounted on the guide portion 162, and the guide portion 162 is provided with an oil passage hole 1621 penetrating through a side wall thereof, and the oil passage hole 1621 communicates with the gap 15.

The aircraft nose 10 top that cavity 101 corresponds is equipped with mounting hole 104, it is the counter sink to go up mounting hole 104, it installs needle bar cover subassembly 17 on the mounting hole 104 to go up, needle bar cover subassembly 17 includes bush 171 and axle sleeve 172, bush 171 installs on aircraft nose 10 through last mounting hole 104, axle sleeve 172 upper end fixed mounting is on bush 171, axle sleeve 172 lower extreme stretches into in cavity 101, during needle bar 11 upper end stretches into axle sleeve 172, when needle bar 11 rotates, needle bar 11 top can be at axle sleeve 172 internal rotation.

Example 2

The embodiment 2 has substantially the same features as the embodiment 1, except that the oil passage 103 comprises a first oil passage 1031 and a second oil passage 1032 which are communicated with each other, the first oil passage 1031 is perpendicular to the second oil passage 1032, the first oil passage 1031 is transversely designed on the handpiece 10, the second oil passage 1032 is longitudinally designed on the handpiece 10, the first oil passage 1031 penetrates through the outer side wall of the handpiece 10, a choke plug 18 is arranged at the outer port of the first oil passage 1031, a first pipe joint 19 is arranged at the lower port of the second oil passage 1032, and the oil mist generator 12 is connected with the first pipe joint 19 through an oil pipe 13.

Example 3

Embodiment 3 has substantially the same characteristics as embodiment 2, except that a second pipe joint 20 and a third pipe joint 21 for connecting a gas source are respectively arranged at two sides of the oil mist generator 12, the oil pipe 13 is connected between the first pipe joint 19 and the second pipe joint 20, and the oil reservoir 22 is arranged at the lower end of the oil mist generator 12.

Claims

1. The sewing machine with the oil spraying device comprises a machine head (10) and a needle rod (11), wherein a cavity (101) is arranged in the machine head (10), and the needle rod (11) is arranged on the machine head (10) through the cavity (101); the method is characterized in that: the oil mist generator is characterized by further comprising an oil mist generator (12), a lower mounting hole (102) penetrating through the lower end face of the machine head (10) is formed in the bottom of the cavity (101), the needle rod (11) is mounted in the lower mounting hole (102) through a bearing, an oil duct (103) communicated with the lower mounting hole (102) is formed in the machine head (10), and the oil mist generator (12) is connected with the oil duct (103) through an oil pipe (13).

2. The sewing machine with an oil spout device as claimed in claim 1, wherein: at least two bearings (14) are mounted on the needle rod (11) in the lower mounting hole (102), a gap (15) is formed between every two adjacent bearings (14), and oil outlets of the oil channels (103) are communicated with the gap (15).

3. The sewing machine with an oil spout device as claimed in claim 2, wherein: the needle rod (11) is provided with a worm wheel (16), the side wall of the needle rod (11) is provided with a limiting surface (111), and the worm wheel (16) is limited on the limiting surface (111) of the needle rod (11) through a clamping pin.

4. The sewing machine with an oil spout device as claimed in claim 3, wherein: the worm wheel (16) is an integrated worm wheel, the worm wheel (16) comprises a transmission part (161) and a guide part (162), gear teeth (1611) are arranged at the upper end of the transmission part (161), and the lower end of the transmission part (161) is limited on the needle rod (11) through a clamping pin; all the bearings (14) are installed on the guide portion (162), an oil through hole (1621) penetrating through the side wall of the guide portion (162) is formed in the guide portion (162), and the oil through hole (1621) is communicated with the gap (15).

5. The sewing machine with an oil spout device as set forth in claim 1, wherein: the needle bar sleeve assembly comprises a cavity (101), wherein an upper mounting hole (104) is formed in the upper portion of a machine head (10) corresponding to the cavity (101), a needle bar sleeve assembly (17) is installed on the upper mounting hole (104), the needle bar sleeve assembly (17) comprises a bushing (171) and a shaft sleeve (172), the bushing (171) is installed on the machine head (10) through the upper mounting hole (104), the upper end of the shaft sleeve (172) is fixedly installed on the bushing (171), the lower end of the shaft sleeve (172) extends into the cavity (101), and the upper end of a needle bar (11) extends into the shaft sleeve (172).

6. The sewing machine with an oil spout device according to any one of claims 1 to 5, wherein: the oil passage (103) comprises a first oil passage (1031) and a second oil passage (1032) which are communicated with each other, a plug (18) is arranged at a port of the first oil passage (1031), a first pipe joint (19) is installed at a port of the second oil passage (1032), and the oil mist generator (12) is connected with the first pipe joint (19) through an oil pipe (13).

7. The sewing machine with an oil spout device as claimed in claim 6, wherein: a second pipe joint (20) and a third pipe joint (21) used for connecting an air source are respectively installed on two sides of the oil mist generator (12), the oil pipe (13) is connected between the first pipe joint (19) and the second pipe joint (20), and an oil reservoir (22) is arranged at the lower end of the oil mist generator (12).