CN114086332A - Residual scrap collecting device of sewing machine and negative pressure joint thereof - Google Patents
Residual scrap collecting device of sewing machine and negative pressure joint thereof Download PDFInfo
- Publication number
- CN114086332A CN114086332A CN202010856215.9A CN202010856215A CN114086332A CN 114086332 A CN114086332 A CN 114086332A CN 202010856215 A CN202010856215 A CN 202010856215A CN 114086332 A CN114086332 A CN 114086332A
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- Prior art keywords
- pipe
- negative pressure
- air inlet
- air
- ring body
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B81/00—Sewing machines incorporating devices serving purposes other than sewing, e.g. for blowing air, for grinding
Abstract
The invention relates to a residual scrap collecting device of a sewing machine and a negative pressure joint thereof, wherein the negative pressure joint comprises a first cylinder part, a second cylinder part and a negative pressure generating structure, the first cylinder part comprises an air inlet pipe and a sleeve, and the sleeve is internally provided with a containing cavity and an air inlet hole communicated with the containing cavity; the second cylinder piece comprises a bearing pipe and an air outlet pipe, and the bearing pipe is combined corresponding to the sleeve; the negative pressure generating structure is arranged in the containing cavity and comprises a first ring body and a second ring body butted with the first ring body, and an air inlet groove communicated with the containing cavity and the bearing pipe is arranged between the first ring body and the second ring body; after the gas enters the cavity from the gas inlet hole, the gas flows through the gas inlet groove and the interior of the bearing pipe in sequence and flows out from the gas outlet pipe, so that a negative pressure channel is formed in the gas inlet pipe; thereby, the suction force of the negative pressure passage can be greatly increased.
Description
Technical Field
The invention relates to a technology of a sewing machine, in particular to a residual scrap collecting device of the sewing machine and a negative pressure joint thereof.
Background
The overlock sewing machine can generate a lot of cloth scrap waste and thread end scraps in the sewing operation process, and the cloth scrap and the thread end can be wound on parts inside the sewing machine if falling into or remaining in the sewing machine, so that the normal operation of the sewing machine is influenced, and the service life of the sewing machine can be even shortened. In order to solve the above problems, various dust collecting devices for sewing machines have been developed.
The existing broken bits collecting device of overlock sewing machine generally has the condition that the suction force is insufficient, especially the broken bits such as thick cloth bits or/and thread ends and the like can often be sucked away, and in order to solve the problem, a user increases the gas quantity entering the air inlet hole, and the increased gas quantity of the method not only generates a larger noise value, but also causes a large loss of gas and electric energy.
In view of the above, the present inventors have made extensive studies to solve the above problems in combination with the application of the above teachings, and thus have an object of improvement.
Disclosure of Invention
An object of the present invention is to provide a residual dust collecting device of a sewing machine and a negative pressure connector thereof, which can reduce energy loss caused by gas impacting a wall surface, and further greatly increase a suction force of a negative pressure passage.
In order to achieve the above object, the present invention provides a residual scrap collecting device of a sewing machine, comprising a gas transmission mechanism, a cloth scrap conveying mechanism, a thread scrap conveying mechanism and a collecting bag, wherein the gas transmission mechanism comprises a gas pressure source, a first gas transmission pipe and a second gas transmission pipe which are respectively connected with the gas pressure source; the cloth scrap conveying mechanism comprises a blanking hopper, a first conveying pipe, a negative pressure joint and a second conveying pipe, wherein the negative pressure joint comprises a first barrel part and a second barrel part, the first barrel part comprises an air inlet pipe and an air inlet hole, the second barrel part comprises an air outlet pipe, two ends of the first conveying pipe are respectively connected with the blanking hopper and the air inlet pipe of the first barrel part, and the first air conveying pipe is connected with the air inlet hole of the first barrel part; the thread scrap conveying mechanism comprises a thread end shearing suction device, a first thread transmission pipe, another negative pressure joint and a second thread transmission pipe, the another negative pressure joint comprises another first barrel part and another second barrel part, the another first barrel part comprises an air inlet pipe and an air inlet hole, the another second barrel part comprises an air outlet pipe, two ends of the first thread transmission pipe are respectively connected with the thread end shearing suction device and the air inlet pipe of the another first barrel part, and the second air transmission pipe is connected with the air inlet hole of the another first barrel part; two ends of the second material conveying pipe are respectively connected with the air outlet pipe and the collecting bag of the second cylinder, and two ends of the second material conveying pipe are respectively connected with the air outlet pipe and the collecting bag of the other second cylinder.
In order to achieve the above object, the present invention provides a negative pressure joint, which is connected with a gas, and comprises a first tube, a second tube and a negative pressure generating structure, wherein the first tube comprises an air inlet pipe and a sleeve extending from the air inlet pipe, a cavity is arranged in the sleeve, and an air inlet hole communicated with the cavity is arranged in the sleeve; the second cylinder part comprises a bearing pipe and an air outlet pipe extending from the bearing pipe, and the bearing pipe corresponds to the sleeve combination; the negative pressure generating structure is arranged in the containing cavity and comprises a first ring body extending from the sleeve and communicated with the gas inlet pipe and a second ring body extending from the bearing pipe and communicated with the gas outlet pipe, the first ring body and the second ring body are mutually butted, and at least one gas inlet groove communicated with the containing cavity and the inner part of the bearing pipe is arranged between the first ring body and the second ring body; after entering the cavity from the air inlet hole, the gas flows through the air inlet groove and the inside of the bearing pipe in sequence and flows out of the air outlet pipe, so that a negative pressure channel is formed inside the air inlet pipe.
The invention also has the following effects that by the butt joint of the first ring body and the second ring body and the arrangement of the air inlet groove, the air is guided to the air inlet groove in a comprehensive manner after entering the containing cavity and then flows out from the interior of the bearing pipe and the air outlet pipe, thereby greatly reducing high noise generated by the impact of the air on the inner wall surface. The arrangement of the tapered hole in the bearing pipe enables the entering gas to be quickly carried out from the tapered hole after the gas is accelerated by the accelerating section.
Drawings
FIG. 1 is an exploded perspective view of the negative pressure connection of the present invention;
FIG. 2 is a perspective external view of a first barrel part of the present invention;
FIG. 3 is an assembled view of the negative pressure connector of the present invention;
FIG. 4 is an assembled cross-sectional view of the negative pressure connection of the present invention;
FIG. 5 is a cross-sectional view taken from 5-5 of FIG. 4;
FIG. 6 is a schematic view of the scrap collecting device of the present invention applied to a sewing machine.
Symbolic illustration in the drawings:
1, negative pressure joint;
10: a first cartridge;
11, an air inlet pipe;
111, convex ring;
112, an inner hole;
12, a sleeve;
121, a cavity;
122, air inlet holes;
20, a second cylinder;
21, a bearing pipe;
211, a baffle ring;
212, a tapered hole;
22, an air outlet pipe;
221, an inner hole;
30, a negative pressure generating structure;
31, a first ring body;
311, an oblique conical surface;
32, a second ring body;
321, a socket;
322 is a gas acceleration section;
323 an oblique cone surface;
33, an air inlet groove;
a is an inner included angle;
b, a negative pressure channel;
l1, L2, L3 center line;
40, a gas transmission mechanism;
41, an air pressure source;
42, a first air conveying pipe;
43, a second gas conveying pipe;
44, adjusting a valve;
50, a cloth scrap conveying mechanism;
51, a blanking hopper;
52, a first conveying pipeline;
53, a second conveying pipeline;
60, a thread scrap conveying mechanism;
61, a thread end shearing suction device;
62, a first transmission pipe;
63, a second transmission pipe;
70, collecting the bag;
8, a overlock sewing machine.
Detailed Description
The following detailed description and technical contents of the present invention are described with reference to the drawings, which are provided for reference and illustration purposes only and are not intended to limit the present invention.
Referring to fig. 1 to 5, the present invention provides a negative pressure joint, wherein the negative pressure joint 1 mainly includes a first tube 10, a second tube 20 and a negative pressure generating structure 30.
The first tube 10 is made of plastic and mainly includes an air inlet tube 11 and a sleeve 12, wherein a plurality of protruding rings 111 are disposed at intervals on the outer circumferential surface of the air inlet tube 11, and an inner hole 112 is formed inside the air inlet tube 11. The sleeve 12 extends from the end of the air inlet pipe 11, a cavity 121 is formed inside the sleeve 12, and an air inlet 122 communicating with the cavity 121 is formed in the sleeve 12.
The second cylinder 20 is also made of plastic or other material, and mainly includes a receiving tube 21 and an air outlet tube 22 extending from the receiving tube 21, the receiving tube 21 is combined with the sleeve 12 corresponding to the first cylinder 10, a baffle ring 211 is formed outside the receiving tube 21, a tapered hole 212 is formed inside the receiving tube 21, an inner diameter of the tapered hole 212 at an end adjacent to the air outlet tube 22 is larger than an inner diameter of an end away from the air outlet tube 22, and an inner included angle a is formed between a center line of the receiving tube 21 and a wall surface of the tapered hole 212, an angle of the inner included angle a is between 6 and 26, preferably between 12 and 20, and an optimized angle is 16 degrees, and when the inner included angle a is smaller than 6 and larger than 26, the flow rate of the internal gas is affected. And an inner hole 221 is formed inside the outlet pipe 22.
The negative pressure generating structure 30 is disposed in the accommodating cavity 121, and mainly includes a first ring body 31 extending from the sleeve 12 and a second ring body 32 extending from the receiving pipe 21, the first ring body 31 and the second ring body 32 are butted with each other, at least one air inlet groove 33 communicating the accommodating cavity 121 and the interior of the receiving pipe 21 is disposed between the first ring body 31 and the second ring body 32, and the number of the air inlet grooves 33 is three in this embodiment.
The interior of the first ring 31 is connected to the inner hole 112 of the gas inlet pipe 11, the exterior of the first ring 31 is formed with an inclined cone 311, and the gas inlet grooves 33 are disposed on the inclined cone 311. The second ring 32 has a sleeve port 321 at the front end and a gas accelerating section 322 extending from the sleeve port 321, the sleeve port 321 is sleeved on the end of the first ring 31, the rear end of the gas accelerating section 322 is connected to the tapered hole 212, and an inclined conical surface 323 is formed outside the second ring 32.
Further, the inlet pipe 11 has a center line L1, the sleeve 12 shares a center line L1 of the inlet pipe 11, the outlet pipe 22 also has a center line L2, and the adapting pipe 21 shares a center line L2 of the outlet pipe 22, wherein the center line L1 of the inlet pipe 11 extends to coincide with the center line L2 of the outlet pipe 22. The air inlet 122 also has a center line L3, and the center line L3 of the air inlet 122 extends perpendicular to the center line L1 of the air inlet pipe 11.
Referring to fig. 6, the present invention further provides a residue collecting device for a sewing machine, which can be applied to a overlock sewing machine 8, and the residue collecting device mainly comprises an air conveying mechanism 40, a cloth scrap conveying mechanism 50, a thread scrap conveying mechanism 60 and a collecting bag 70.
The air delivery mechanism 40 mainly includes an air pressure source 41, a first air delivery pipe 42 and a second air delivery pipe 43, and one end of the first air delivery pipe 42 and one end of the second air delivery pipe 43 are respectively connected with the air pressure source 41.
The cloth scrap conveying mechanism 50 mainly comprises a blanking hopper 51, a first conveying pipe 52, a negative pressure joint 1 and a second conveying pipe 53, wherein the blanking hopper 51 is arranged on the front side of the overlock sewing machine 8 and used for allowing cut cloth scraps to fall into, two ends of the first conveying pipe 52 are respectively connected with the blanking hopper 51 and the air inlet pipe 11 of the first cylinder 10, two ends of the second conveying pipe 53 are respectively connected with the air outlet pipe 22 and the collecting bag 70 of the second cylinder 20, and one end of the first air conveying pipe 42, which is far away from the air pressure source 41, is connected with an air inlet 122 of the first cylinder 10.
The thread scrap conveying mechanism 60 mainly comprises a thread end shearing and drawing device 61, a first thread transmission pipe 62, another negative pressure joint 1 and a second thread transmission pipe 63, wherein the thread end shearing and drawing device 61 is arranged on a sewing platform of the overlock sewing machine 8 and is used for sucking and cutting thread ends, two ends of the first thread transmission pipe 62 are respectively connected with the thread end shearing and drawing device 61 and an air inlet pipe 11 of another first barrel 10, two ends of the second thread transmission pipe 63 are respectively connected with an air outlet pipe 22 and a collecting bag 70 of another second barrel 20, and one end of the second thread transmission pipe 43, which is far away from the air pressure source 41, is connected with an air inlet hole 122 of another first barrel 10.
Further, the air transportation mechanism 40 of the present embodiment further includes two adjustment valves 44, wherein one of the adjustment valves 44 is connected to the first air transportation pipe 42 and the air inlet 122 of the first cylinder 10, and the other adjustment valve 44 is connected to the second air transportation pipe 43 and the air inlet 122 of the other first cylinder 10, so as to adjust the flow rate correspondingly according to the actual usage requirement.
Referring to fig. 4, in use, after entering the receiving chamber 121 through the air inlet hole 122, the air flows through the air inlet slots 33 and the interior of the adapting pipe 21 in sequence, and flows out of the inner hole 221 of the air outlet pipe 22, so that a negative pressure channel B is formed in the air inlet pipe 11, and the negative pressure channel B can convey the cloth scraps and thread ends into the collecting bag 70 through the material conveying pipes 52 and 53 and the material conveying pipes 62 and 63.
Claims (12)
1. A negative pressure connector for connecting a gas, comprising:
the first cylinder piece comprises an air inlet pipe and a sleeve extending from the air inlet pipe, a containing cavity is formed in the sleeve, and an air inlet hole communicated with the containing cavity is formed in the sleeve;
the second cylinder part comprises a bearing pipe and an air outlet pipe extending from the bearing pipe, and the bearing pipe corresponds to the sleeve combination; and
the negative pressure generating structure is arranged in the accommodating cavity and comprises a first ring body extending from the sleeve and communicated with the gas inlet pipe and a second ring body extending from the adapting pipe and communicated with the gas outlet pipe, the first ring body and the second ring body are mutually butted, and at least one gas inlet groove communicated with the accommodating cavity and the adapting pipe is arranged between the first ring body and the second ring body;
after entering the cavity from the air inlet hole, the gas flows through the air inlet groove and the inside of the bearing pipe in sequence and flows out from the air outlet pipe, so that a negative pressure channel is formed inside the air inlet pipe.
2. The negative pressure fitting of claim 1, wherein the inlet tube has a centerline and the outlet tube has a centerline, the centerline of the inlet tube extending coincident with the centerline of the outlet tube.
3. The vacuum fitting of claim 2, wherein said air inlet also has a centerline, said centerline of said air inlet extending perpendicular to said centerline of said air inlet tube.
4. The negative pressure connector as claimed in claim 1, wherein the adapter tube has a tapered bore formed therein, the tapered bore having an inner diameter at an end adjacent the outlet tube that is greater than an inner diameter at an end remote from the outlet tube.
5. The negative pressure joint as claimed in claim 4, wherein the adapting pipe has a center line, and an included angle is formed between the center line of the adapting pipe and a wall surface of the tapered hole, and the included angle is between 6 ℃ and 26 ℃.
6. The negative pressure port of claim 5, wherein the included angle is between 12 and 20 degrees.
7. The negative pressure joint of claim 6, wherein the inner included angle is 16 degrees.
8. The negative pressure joint as claimed in claim 4, wherein the second ring has a socket and a gas velocity increasing section extending backward from the socket, the socket is connected to the first ring, and the rear end of the gas velocity increasing section is connected to the tapered hole.
9. The negative pressure connector as claimed in claim 1, wherein the socket is formed with a stopper ring on an outer portion thereof for stopping the sleeve.
10. The negative pressure connector as claimed in claim 1, wherein the first ring body is formed at an outer portion thereof with a tapered surface, and the inlet groove is formed on the tapered surface.
11. A scrap collecting device of a sewing machine, comprising:
the air conveying mechanism comprises an air pressure source, a first air conveying pipe and a second air conveying pipe which are respectively connected with the air pressure source;
a cloth scrap conveying mechanism, comprising a blanking hopper, a first conveying pipe, a negative pressure joint according to any one of claims 1 to 10 and a second conveying pipe, wherein two ends of the first conveying pipe are respectively connected with the blanking hopper and the air inlet pipe of the first barrel, and the first air inlet pipe is connected with the air inlet hole of the first barrel;
a thread scrap conveying mechanism, which comprises a thread end shearing suction device, a first thread pipe, another negative pressure joint according to any one of claims 1 to 10 and a second thread pipe, wherein two ends of the first thread pipe are respectively connected with the thread end shearing suction device and the air inlet pipe of another first tube piece, and the second thread pipe is connected with the air inlet hole of another first tube piece; and
and two ends of the second conveying pipeline are respectively connected with the air outlet pipe of the second cylinder and the collecting bag, and two ends of the second conveying pipeline are respectively connected with the air outlet pipe of the other second cylinder and the collecting bag.
12. The device as claimed in claim 11, wherein the air supply mechanism further comprises two adjustment valves, one of the adjustment valves connects the first air supply pipe and the air inlet of the first cylinder, and the other adjustment valve connects the second air supply pipe and the air inlet of the first cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010856215.9A CN114086332A (en) | 2020-08-24 | 2020-08-24 | Residual scrap collecting device of sewing machine and negative pressure joint thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010856215.9A CN114086332A (en) | 2020-08-24 | 2020-08-24 | Residual scrap collecting device of sewing machine and negative pressure joint thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114086332A true CN114086332A (en) | 2022-02-25 |
Family
ID=80295429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010856215.9A Pending CN114086332A (en) | 2020-08-24 | 2020-08-24 | Residual scrap collecting device of sewing machine and negative pressure joint thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114086332A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1686713A (en) * | 1926-11-18 | 1928-10-09 | Int Comb Eng Corp | Blower nozzle for transport lines |
| WO1990008083A1 (en) * | 1989-01-11 | 1990-07-26 | Abb Stal Ab | Ejector with peripheral supply of propellent gas |
| US5429156A (en) * | 1992-11-24 | 1995-07-04 | Ueda; Kazuyuki | Pneumatic transmission apparatus |
| JP3051725U (en) * | 1998-02-23 | 1998-09-02 | 樹林 周 | Dust guide device for overlock sewing machine |
| CN2928901Y (en) * | 2006-06-29 | 2007-08-01 | 八月国际实业有限公司 | Leftover discharger of sewing machine |
| CN201395706Y (en) * | 2009-02-12 | 2010-02-03 | 贺欣机械厂股份有限公司 | Operation chip collecting device of sewing machine |
| CN102127843A (en) * | 2010-01-14 | 2011-07-20 | 隆陞工业股份有限公司 | Crumb-absorbing device for sewing machine |
| CN106144603A (en) * | 2016-08-19 | 2016-11-23 | 济南大学 | A kind of it is applicable to the combined type issuance of materials device that granular solid particles is air conveying |
| CN208362661U (en) * | 2018-04-28 | 2019-01-11 | 浙江中捷缝纫科技有限公司 | Sewing machine |
| CN212582154U (en) * | 2020-08-24 | 2021-02-23 | 高林股份有限公司 | Residual scrap collecting device of sewing machine and negative pressure joint thereof |
-
2020
- 2020-08-24 CN CN202010856215.9A patent/CN114086332A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1686713A (en) * | 1926-11-18 | 1928-10-09 | Int Comb Eng Corp | Blower nozzle for transport lines |
| WO1990008083A1 (en) * | 1989-01-11 | 1990-07-26 | Abb Stal Ab | Ejector with peripheral supply of propellent gas |
| US5429156A (en) * | 1992-11-24 | 1995-07-04 | Ueda; Kazuyuki | Pneumatic transmission apparatus |
| JP3051725U (en) * | 1998-02-23 | 1998-09-02 | 樹林 周 | Dust guide device for overlock sewing machine |
| CN2928901Y (en) * | 2006-06-29 | 2007-08-01 | 八月国际实业有限公司 | Leftover discharger of sewing machine |
| CN201395706Y (en) * | 2009-02-12 | 2010-02-03 | 贺欣机械厂股份有限公司 | Operation chip collecting device of sewing machine |
| CN102127843A (en) * | 2010-01-14 | 2011-07-20 | 隆陞工业股份有限公司 | Crumb-absorbing device for sewing machine |
| CN106144603A (en) * | 2016-08-19 | 2016-11-23 | 济南大学 | A kind of it is applicable to the combined type issuance of materials device that granular solid particles is air conveying |
| CN208362661U (en) * | 2018-04-28 | 2019-01-11 | 浙江中捷缝纫科技有限公司 | Sewing machine |
| CN212582154U (en) * | 2020-08-24 | 2021-02-23 | 高林股份有限公司 | Residual scrap collecting device of sewing machine and negative pressure joint thereof |
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Application publication date: 20220225 |
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