TWM603888U - Debris collection device of sewing machine and negative pressure joint thereof - Google Patents

Abstract

The model relates to a debris collection device of a sewing machine and a negative pressure joint thereof. The negative pressure joint includes a first tube member, a second tube member and a negative pressure generating structure. The first tube member includes an air inlet pipe and a sleeve. It has a cavity and is provided with an air inlet that communicates with the cavity; the second cylinder includes a receiving pipe and an outlet pipe, and the receiving pipe corresponds to a sleeve assembly; the negative pressure generating structure is arranged in the cavity and includes a first ring body and abutting The second ring body, between the first ring body and the second ring body, is provided with an air inlet groove connecting the cavity and the receiving pipe; wherein the gas enters the cavity from the air inlet hole, and then flows through the air inlet groove and Take over the inside of the tube and flow out from the air outlet tube, thereby forming a negative pressure channel inside the air inlet tube; thereby, the suction force of the negative pressure channel can be greatly improved.

Description

Debris collection device of sewing machine and negative pressure joint thereof

This model relates to the technology of a sewing machine, in particular to a debris collection device of a sewing machine and its negative pressure joint.

The sewing machine will produce a lot of cloth scraps and thread scraps during the sewing operation. If these cloth scraps and thread scraps fall or remain in the machine, they will entangle the internal parts of the sewing machine, which will not only affect The normal operation of the sewing machine can even shorten the service life of the sewing machine. In order to solve the aforementioned problems, the industry has successively developed various sewing machine debris collection devices.

Existing scrap collection devices of Koke sewing machines generally have insufficient suction power, especially thick cloth scraps or/and thread ends and other scraps, which often cannot be sucked away. The user has to solve this The problem is to increase the amount of gas that enters the air inlet. The increased amount of gas in this way not only produces a greater noise value, but also causes a large amount of gas and electrical energy consumption.

In view of this, the creators of the new type devote themselves to the above-mentioned shortcomings of the existing technology, especially concentrated research and the application of academic theory, try their best to solve the above problems, which becomes the goal of the new type of creators' improvement.

One purpose of the present invention is to provide a debris collection device for a sewing machine and its negative pressure joint, which can reduce the energy loss caused by gas hitting the wall surface, thereby greatly improving the suction force of the negative pressure channel.

In order to achieve the above purpose, the present invention provides a debris collection device for a sewing machine, which includes an air conveying mechanism, a cloth waste conveying mechanism, a thread waste conveying mechanism, and a collection bag. The air conveying mechanism includes an air pressure source and is connected to the a first pipeline and a second source of air pressure gas pipelines; the transport mechanism comprises a cloth dust falling funnel, a first delivery conduit, a negative pressure connector and a second delivery conduit, which comprises a suction connector A first cylindrical member and a second cylindrical member, the first cylindrical member includes an air inlet pipe and an air inlet, the second cylindrical member includes an air outlet pipe, and two ends of the first feeding pipe are respectively connected to the drop hopper And the air inlet pipe of the first tube, the first air delivery tube is connected to the air inlet of the first tube; the thread shavings conveying mechanism includes a thread cutting picker, a first line pipe, and Another negative pressure connector and a second line pipe, the other negative pressure connector includes another first tube member and another second tube member, and the other first tube member includes an air inlet tube and an inlet The other second tube includes an air outlet, and two ends of the first line tube are respectively connected to the thread cutting and extractor and the air inlet tube of the other first tube. The air pipe is connected to the air inlet of the other first tube; the two ends of the second feeding tube are respectively connected to the air outlet and the collecting bag of the second tube, and the two ends of the second feeding tube The air outlet pipe and the collection bag of the other second cylinder are respectively connected.

In order to achieve the above-mentioned object, the present invention provides a negative pressure connector for connecting a gas, including a first cylinder, a second cylinder, and a negative pressure generating structure. The first cylinder includes an air inlet pipe and a gas inlet. A sleeve extending from the trachea has a cavity inside the sleeve, and an air inlet hole communicating with the cavity is opened in the sleeve; the second cylinder includes a socket tube and extends from the socket tube An outlet pipe of the, the receiving pipe corresponds to the sleeve assembly; the negative pressure generating structure is disposed in the cavity, and the negative pressure generating structure includes a first ring body extending from the sleeve and communicating with the air inlet pipe And a second ring body extending from the receiving pipe and communicating with the air outlet pipe, the first ring body and the second ring body are butted with each other, and there is provided between the first ring body and the second ring body At least one air inlet groove connecting the cavity and the inside of the receiving pipe; wherein after the gas enters the cavity from the air inlet hole, it will flow through the air inlet groove and the inside of the receiving pipe in order and from the outlet pipe Outflow, thereby forming a negative pressure channel inside the air inlet pipe.

The new model also has the following functions. Through the butt joint of the first ring body and the second ring body and the setting of the air inlet groove, the gas will be fully guided to the air inlet groove after entering the cavity and then from the inside of the receiving pipe And the air outlet pipe flows out, which can greatly reduce the high noise generated by gas hitting the inner wall surface. The taper hole inside the receiving pipe is used to make the gas that enters can be quickly taken out from the taper hole after passing through the speed increasing section.

The detailed description and technical content of the present invention are described below in conjunction with the drawings. However, the drawings are only provided for reference and explanation, and are not intended to limit the present invention.

Please refer to FIG. 1 to FIG. 5. The present invention provides a negative pressure joint. The negative pressure joint 1 mainly includes a first tube member 10, a second tube member 20 and a negative pressure generating structure 30.

The first cylindrical member 10 is made of plastic and other materials, and it mainly includes an air inlet pipe 11 and a sleeve 12. A plurality of convex rings 111 are arranged on the outer peripheral surface of the air inlet pipe 11, and the inside of the air inlet pipe 11 has a内孔112。 Inner hole 112. The sleeve 12 extends from the end of the air inlet pipe 11 and has a cavity 121 inside the sleeve 12, and an air inlet 122 communicating with the cavity 121 is opened in the sleeve 12.

The second cylindrical member 20 is also made of plastic and other materials. It mainly includes a receiving tube 21 and an air outlet tube 22 extending from the receiving tube 21. The receiving tube 21 is a combination of the sleeve 12 corresponding to the first cylindrical member 10. A baffle ring 211 is formed on the outside of the receiving pipe 21. A tapered hole 212 is provided inside the receiving pipe 21. The inner diameter of the tapered hole 212 at one end adjacent to the air outlet pipe 22 is larger than the inner diameter of the end away from the air outlet pipe 22. The inner angle A is formed between the center line of the receiving pipe 21 and the wall surface of the tapered hole 212, and the angle of the inner included angle A is between 6˚~26˚, preferably between 12˚~20˚ , The optimized angle is 16˚. When the inner included angle A is less than 6˚ and greater than 26˚, both will affect the flow speed of the internal gas. In addition, there is an inner hole 221 inside the air outlet pipe 22.

The negative pressure generating structure 30 is disposed in the cavity 121, and it 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 The bodies 32 are connected to each other, and between the first ring body 31 and the second ring body 32 is provided at least one air inlet groove 33 communicating the cavity 121 and the inside of the receiving pipe 21. The number of air inlet grooves 33 in this embodiment is For three.

The inside of the first ring body 31 communicates with the inner hole 112 of the air inlet pipe 11, and the outside of the first ring body 31 is formed with an oblique cone surface 311, and the aforementioned air inlet grooves 33 are provided on the oblique cone surface 311. The inner front end of the second ring body 32 has a set of ports 321 and a gas speed increasing section 322 extending from the socket 321. The socket 321 is sleeved on the end of the first ring body 31. The rear end is connected to the aforementioned tapered hole 212, and an oblique cone surface 323 is also formed outside the second ring body 32.

To further illustrate, the inlet tube 11 has a centerline L1, the sleeve 12 shares the centerline L1 of the inlet tube 11, the outlet tube 22 also has a centerline L2, and the receiving tube 21 shares the centerline L2 of the outlet tube 22. The extension of the center line L1 of the air pipe 11 coincides with the center line L2 of the air outlet pipe 22. In addition, the air inlet 122 also has a centerline L3, and the extension of the centerline L3 of the air inlet 122 and the centerline L1 of the air inlet pipe 11 are perpendicular to each other.

Please refer to Figure 6, the present invention also provides a debris collection device for a sewing machine, which can be applied to a crochet sewing machine 8. The debris collection device mainly includes an air conveying mechanism 40, a cloth scrap conveying mechanism 50, and a thread Chip conveying mechanism 60 and a collecting bag 70.

The air delivery mechanism 40 mainly includes a pneumatic source 41, a first air delivery pipe 42 and a second air delivery pipe 43. One end of the first air delivery pipe 42 and the second air delivery pipe 43 is respectively connected to the air pressure source 41.

The cloth scrap conveying mechanism 50 mainly includes a blanking hopper 51, a first feeding pipe 52, a negative pressure joint 1 and a second feeding pipe 53. The blanking hopper 51 is installed on the front side of the sewing machine 8 for supply The cut cloth scraps fall in, the two ends of the first feeding pipe 52 are respectively connected to the falling hopper 51 and the air inlet pipe 11 of the first cylinder 10, and the two ends of the second feeding pipe 53 are respectively connected to the second cylinder 20 The air outlet pipe 22 and the collecting bag 70 are connected to the air inlet 122 of the first cylinder 10 at one end of the first air pipe 42 away from the air pressure source 41.

The thread scrap conveying mechanism 60 mainly includes a thread cutting and extracting device 61, a first line pipe 62, another negative pressure connector 1 and a second line pipe 63. The thread cutting and extracting device 61 is installed in the copy The sewing platform of the gram sewing machine 8 is used to suck in the thread and cut the thread. The two ends of the first line pipe 62 are respectively connected to the thread cutting and extractor 61 and the inlet of the other first cylinder 10 The two ends of the air pipe 11 and the second line pipe 63 are respectively connected to the air outlet tube 22 of the second tube member 20 and the collecting bag 70. The end of the second air tube 43 away from the air pressure source 41 is connected to the other first tube member 10 The air inlet 122.

Further, the air delivery mechanism 40 of this embodiment further includes two adjustment valves 44, of which one adjustment valve 44 is connected to the first air delivery pipe 42 and the air inlet 122 of the first cylinder 10, and the other adjustment valve 44 is The second air pipe 43 is connected to the air inlet 122 of the other first cylinder 10 to adjust the corresponding flow rate according to actual usage requirements.

Please refer to Fig. 4 again. When in use, after the gas enters the cavity 121 from the air inlet 122, it will flow through the air inlet groove 33 and the inside of the receiving pipe 21 in order, and then from the inner hole of the air outlet pipe 22 221 flows out, thereby forming a negative pressure channel B inside the air inlet pipe 11. This negative pressure channel B can transport the aforementioned cloth scraps and thread ends to the collection bag through the feed pipes 52, 53 and the line pipes 62, 63 Within 70.

In summary, the debris collection device and its negative pressure connector of the new sewing machine can indeed achieve the intended purpose of use, and solve the lack of conventional knowledge. Because of its novelty and progress, it fully meets the requirements of new patent applications. The application is filed in accordance with the Patent Law, please check carefully and grant the patent for this case to protect the rights of the creator of the new type.

1: Negative pressure connector

10: The first tube

11: Into the trachea

111: Convex Ring

112: inner hole

12: sleeve

121: cavity

122: air inlet

20: The second tube

21: Take over

211: Block Ring

212: tapered hole

22: Exhaust pipe

221: inner hole

30: negative pressure generating structure

31: The first ring

311: oblique cone

32: second ring body

321: socket

322: Gas acceleration section

323: oblique cone

33: Air intake slot

A: Inside angle

B: negative pressure channel

L1, L2, L3: center line

40: gas transmission mechanism

41: Air pressure source

42: The first air pipe

43: The second air pipe

50: Cloth scrap conveying mechanism

51: blanking hopper

52: The first feeding pipe

53: The second feeding pipe

60: Thread chip conveying mechanism

61: Thread cutting extractor

62: The first transmission line

63: The second transmission line

70: Collection bag

8: Kake sewing machine

Figure 1 is a three-dimensional exploded view of the new negative pressure connector.

Figure 2 is a perspective view of the first cylinder of the present invention.

Figure 3 is the appearance view of the new negative pressure joint assembly.

Figure 4 is a sectional view of the new negative pressure joint assembly.

Figure 5 is a cross-sectional view of 5-5 of Figure 4.

Figure 6 is a schematic diagram of the new type of debris collection device applied to the sewing machine assembly.

1: Negative pressure connector

10: The first tube

11: Into the trachea

111: Convex Ring

112: inner hole

12: sleeve

121: cavity

122: air inlet

20: The second tube

21: Take over

211: Block Ring

212: tapered hole

22: Exhaust pipe

221: inner hole

30: negative pressure generating structure

31: The first ring

311: oblique cone

32: second ring body

321: socket

322: Gas acceleration section

323: oblique cone

33: Air intake slot

A: Inside angle

B: negative pressure channel

L1, L2, L3: center line

Claims (12)

A negative pressure joint, connected to a gas, including: A first cylinder, including an air inlet tube and a sleeve extending from the air inlet tube, the sleeve has a cavity inside, and the sleeve is provided with an air inlet hole communicating with the cavity; A second cylinder, including a socket pipe and an outlet pipe extending from the socket pipe, the socket pipe corresponds to the sleeve assembly; and A negative pressure generating structure is disposed in the cavity. The negative pressure generating structure includes a first ring body extending from the sleeve and communicating with the air inlet pipe, and a first ring body extending from the receiving pipe and communicating with the air outlet pipe The second ring body, the first ring body and the second ring body are butted with each other, and between the first ring body and the second ring body is provided at least one air inlet communicating the cavity and the inside of the receiving pipe groove; After the gas enters the cavity from the gas inlet hole, it will flow through the gas inlet groove and the receiving pipe in sequence and flow out from the gas outlet pipe, thereby forming a negative pressure channel inside the gas inlet pipe. The negative pressure connector according to claim 1, wherein the air inlet tube has a center line, the air outlet tube also has a center line, and the extension of the center line of the air inlet tube coincides with the center line of the air outlet tube. The negative pressure connector according to claim 2, wherein the air inlet hole also has a center line, and the extension of the center line of the air inlet hole and the center line of the air inlet pipe are perpendicular to each other. The negative pressure connector according to claim 1, wherein a tapered hole is provided inside the receiving pipe, and the inner diameter of the tapered hole at an end adjacent to the air outlet tube is larger than an inner diameter of an end far away from the air outlet tube. The negative pressure joint according to claim 4, wherein the receiving pipe has a center line, and an inner included angle is formed between the center line of the receiving pipe and the wall surface of the tapered hole, and the angle of the inner included angle is between 6˚~ Between 26˚. The negative pressure connector described in claim 5, wherein the angle of the inner included angle is between 12˚~20˚. The negative pressure connector described in claim 6, wherein the inner included angle is 16˚. The negative pressure connector according to claim 4, wherein the second ring body has a set of ports and a gas acceleration section extending backward from the socket, the socket is sleeved on the first ring, and the gas The rear end of the speed increasing section is connected with the tapered hole. The negative pressure joint according to claim 1, wherein a retaining ring for stopping the sleeve is formed on the outside of the receiving pipe. The negative pressure connector according to claim 1, wherein an oblique cone surface is formed on the outside of the first ring body, and the air inlet groove is provided on the oblique cone surface. A debris collection device for a sewing machine includes: an air delivery mechanism, including an air pressure source, a first air delivery pipe and a second air delivery pipe respectively connected to the air pressure source; a cloth waste delivery mechanism, including a hopper, a A first conveying pipe, a negative pressure joint as described in any one of claims 1 to 10, and a second conveying pipe, and two ends of the first conveying pipe are respectively connected to the blanking hopper and the first barrel The air inlet pipe of the piece, the first air pipe is connected to the air hole of the first cylinder; a thread scrap conveying mechanism, including a thread cutting and extractor, a first wire pipe, as requested items 1 to the 10 into any one of a negative pressure of the other connector and a second output conduit, the two ends of the first transmission line connected to the stub tube are drawn and cut another member of the first cartridge A gas pipe, the second gas pipe is connected to the air inlet of another first cylinder; and a collection bag, two ends of the second material pipe are respectively connected to the outlet pipe and the collection of the second cylinder The two ends of the second line pipe are respectively connected to the air outlet pipe and the collection bag of the other second cylinder. The debris collection device for a sewing machine according to claim 11, wherein the air conveying mechanism further includes two adjusting valves, one of which is connected to the first air pipe and the air inlet of the first cylinder, The other adjustment valve is connected to the second air pipe and the air inlet of the other first cylinder.

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