TW202206666A - Debris collection device for sewing machine and negative pressure joint thereof - Google Patents

Abstract

A negative pressure joint includes a first barrel, a second barrel and a negative pressure generation structure. The first barrel includes a intake tube and a sleeve. The sleeve having a cavity and an intake hole with connected to the cavity. The second barrel includes an adapting pipe and a outlet tube. The adapting pipe is corresponding the sleeve combination. The negative pressure generation structure is set in the cavity and includes a first ring and a second ring with which it is docked. An intake trough is formed between the first ring and the second ring and connected the cavity and the adapting pipe. After a gas enters the cavity from the intake hole, it will flow through the intake trough in sequence and the inside of the adapting pipe and flow out of the outlet tube, thus forming a negative pressure channel inside the intake tube.

Description

Sewing machine debris collection device and its negative pressure joint

The present invention relates to the technology of a sewing machine, in particular to a debris collecting device of the sewing machine and its negative pressure joint.

Haoke sewing machine will produce a lot of scraps and thread scraps during the sewing operation. If such scraps and thread ends fall into or remain in the machine, they will wind up the parts inside the sewing machine, which will not only affect the sewing machine. The normal operation of the sewing machine will even shorten the service life of the sewing machine. In order to solve the aforementioned problems, the industry has successively developed various debris collection devices for sewing machines.

The debris collection device of the existing Haoke sewing machine generally has insufficient suction power, especially the coarse cloth debris or/and thread ends and other debris, which often cannot be sucked away. In order to solve this problem, the user Therefore, the amount of gas entering the air inlet is increased. The increased amount of gas in this way not only produces a larger noise value, but also causes a large amount of consumption of gas and electric energy.

In view of this, the inventor of the present invention has devoted himself to the research and application of the theory, aiming at the above-mentioned deficiencies of the prior art, to try his best to solve the above-mentioned problems, which is the goal of the present inventor's improvement.

One of the objectives 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 the 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 lint conveying mechanism and a collection bag, and the air conveying mechanism includes an air pressure source, which is respectively connected to the A first gas delivery pipe and a second gas delivery pipe of the air pressure source; the cloth waste conveying mechanism includes a hopper, a first material delivery pipe, a negative pressure joint and a second material delivery pipe, and the negative pressure joint includes a A first cylindrical piece and a second cylindrical piece, the first cylindrical piece includes an air inlet pipe and an air inlet hole, the second cylindrical piece includes an air outlet pipe, and the two ends of the first feeding pipe are respectively connected to the hopper And this air inlet pipe of this first tube piece, this first air delivery tube is connected with this air inlet hole of this first tube piece; This wire scrap conveying mechanism Another negative pressure joint and a second line pipe, the other negative pressure joint includes another first cylinder piece and another second cylinder piece, the other first cylinder piece includes an air inlet pipe and an inlet pipe. Air hole, this another second tube piece includes a gas outlet pipe, and the two ends of this first transmission line are respectively connected to this line head shearing dipper and this gas inlet pipe of another this first tube piece, the second output pipe The trachea is connected to the air inlet hole of the other first cylindrical piece; the two ends of the second feeding pipe are respectively connected to the gas outlet pipe and the collecting bag of the second cylindrical piece, and the two ends of the second feeding pipe are respectively connected The air outlet pipe and the collection bag of the other second cylinder are respectively connected.

In order to achieve the above-mentioned purpose, the present invention provides a negative pressure joint, which is connected to a gas, and includes a first cylindrical member, a second cylindrical member and a negative pressure generating structure. The first cylindrical member includes an air inlet pipe and a A sleeve extending from the trachea has a cavity inside the sleeve, and an air intake hole is opened in the sleeve to communicate with the cavity; the second tubular member includes a receiving pipe and extends from the receiving pipe an air outlet pipe, the receiving pipe system corresponds to the sleeve combination; the negative pressure generating structure is arranged 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 a second ring body 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, it will flow through the air inlet groove and the inside of the receiving pipe in sequence and from the air outlet pipe outflow, thereby forming a negative pressure channel inside the air inlet pipe.

The present invention also has the following effects: by 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 comprehensively guided to the air inlet groove after entering the cavity, and then from the inside of the receiving pipe And the gas outlet pipe flows out, which can greatly reduce the high noise generated by the gas hitting the inner wall surface. The conical hole inside the receiving pipe is used, so that the incoming gas can be quickly taken out from the conical hole after passing through the speed-up section of the speed-up section.

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

Referring to FIGS. 1 to 5 , the present invention provides a negative pressure joint. The negative pressure joint 1 mainly includes a first cylindrical member 10 , a second cylindrical member 20 and a negative pressure generating structure 30 .

The first cylindrical member 10 is made of plastic and other materials, and mainly includes an air inlet pipe 11 and a sleeve 12. A plurality of convex rings 111 are arranged at intervals on the outer peripheral surface of the air inlet pipe 11, and the inside of the air inlet pipe 11 has a 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, and mainly includes a receiving pipe 21 and an air outlet pipe 22 extending from the receiving pipe 21 . The receiving pipe 21 is a combination of the sleeve 12 corresponding to the first cylindrical member 10 . A retaining ring 211 is formed on the outside of the receiving pipe 21 , and a tapered hole 212 is provided inside the receiving pipe 21 . diameter, and an internal 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 internal angle A is between 6° and 26°, preferably between 12° and 20°. , the optimal angle is 16°. When the inner angle A is less than 6° and greater than 26°, it will affect the flow velocity 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 mainly includes a first ring body 31 extending from the sleeve 12 and a second ring body 32 extending from the bearing tube 21 . The first ring body 31 and the second ring body 32 The bodies 32 are butted against each other, and between the first ring body 31 and the second ring body 32 is provided at least one air intake groove 33 that communicates the interior of the cavity 121 and the receiving pipe 21. In this embodiment, the number of air intake grooves 33 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 inclined cone surface 311 . The inner front end of the second ring body 32 has a socket 321 and a gas increasing section 322 extending from the socket 321. The socket 321 is socketed at the end of the first ring body 31. The rear end is connected with the aforementioned tapered hole 212 , and an inclined tapered surface 323 is also formed on the outside of the second ring body 32 .

To further illustrate, the air inlet pipe 11 has a center line L1, the sleeve 12 shares the center line L1 of the air inlet pipe 11, the air outlet pipe 22 also has a center line L2, and the receiving pipe 21 shares the center line L2 of the air outlet pipe 22, wherein the inlet pipe 22 has a center line L2. 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 intake hole 122 also has a center line L3, and the extension of the center line L3 of the air intake hole 122 and the center line L1 of the air intake pipe 11 are perpendicular to each other.

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

The gas delivery mechanism 40 mainly includes a gas pressure source 41 , a first gas delivery pipe 42 and a second gas delivery pipe 43 , one end of the first gas delivery pipe 42 and the second gas delivery pipe 43 are respectively connected to the gas pressure source 41 .

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

The lint conveying mechanism 60 mainly includes a thread cutting dipper 61, a first transmission line 62, another negative pressure joint 1 and a second transmission line 63, and the thread cutting dipper 61 is installed in the On the sewing platform of the gram sewing machine 8, in order to inhale the thread end and cut the thread end, the two ends of the first line pipe 62 are respectively connected to the input of the thread end shearing dipper 61 and another first cylinder piece 10. The air pipe 11, the two ends of the second line pipe 63 are respectively connected to the air outlet pipe 22 and the collection bag 70 of the other second cylinder piece 20, and one end of the second gas transmission pipe 43 away from the air pressure source 41 is connected to another first cylinder piece 10. the air intake hole 122.

Further, the gas delivery mechanism 40 of the present embodiment further includes two adjustment valves 44, one of which is the air inlet 122 connecting the first gas delivery pipe 42 and the first cylindrical member 10, and the other adjustment valve 44 is The second air pipe 43 is connected to the air inlet 122 of the other first cylindrical member 10, so that the corresponding flow rate can be adjusted according to the actual use requirements.

Please refer to FIG. 4 again. After the gas enters the cavity 121 from the air inlet 122 during use, it will flow through the air inlet grooves 33 and the inside of the receiving pipe 21 in sequence, and then flow through the inner hole of the air outlet pipe 22 in sequence. 221 flows out, thereby forming a negative pressure channel B inside the air inlet pipe 11, and this negative pressure channel B can transport the aforementioned cloth scraps and thread ends to the collection bag through each feeding pipe 52, 53 and each wire feeding pipe 62, 63 within 70.

To sum up, the debris collection device of the sewing machine and its negative pressure joint of the present invention can indeed achieve the intended purpose of use, and solve the deficiencies of the conventional knowledge, and because it is highly novel and progressive, it fully meets the requirements of the invention patent application, If you file an application in accordance with the Patent Law, please check and approve the patent in this case to protect the rights of the inventor.

1: Negative pressure connector

10: The first cylinder

11: Inlet trachea

111: convex ring

112: Inner hole

12: Sleeve

121: cavities

122: Air intake holes

20: The second cylinder

21: Undertake pipe

211: retaining ring

212: Tapered hole

22: Outlet tube

221: Inner hole

30: Negative pressure generating structure

31: The first ring body

311: Inclined Cone

32: Second ring body

321: socket

322: Gas increasing section

323: Inclined Cone

33: Air intake slot

A: Included angle

B: negative pressure channel

L1, L2, L3: Centerline

40: Gas transmission mechanism

41: Air pressure source

42: The first air pipe

43: Second Air Pipe

50: Cloth conveying mechanism

51: Drop Hopper

52: The first feeding pipe

53: The second feeding pipe

60: wire scrap conveying mechanism

61: Thread cutting extractor

62: The first transmission line

63: The second transmission line

70: Collection Bag

8: Haoke Sewing Machine

Fig. 1 is an exploded perspective view of the negative pressure joint of the present invention.

FIG. 2 is a three-dimensional appearance view of the first cylinder of the present invention.

Figure 3 is an external view of the negative pressure joint assembly of the present invention.

Figure 4 is a sectional view of the negative pressure joint of the present invention.

FIG. 5 is a cross-sectional view of FIG. 4 , 5-5.

Fig. 6 is a schematic diagram showing the application of the debris collection device of the present invention to a sewing machine assembly.

1: Negative pressure connector

10: The first cylinder

11: Inlet trachea

111: convex ring

112: Inner hole

12: Sleeve

121: cavities

122: Air intake holes

20: The second cylinder

21: Undertake pipe

211: retaining ring

212: Tapered hole

22: Outlet tube

221: Inner hole

30: Negative pressure generating structure

31: The first ring body

311: Inclined Cone

32: Second ring body

321: socket

322: Gas increasing section

323: Inclined Cone

33: Air intake slot

A: Included angle

B: negative pressure channel

L1, L2, L3: Centerline

Claims (12)

A negative pressure connector for connecting a gas, including: a first cylindrical piece, comprising an air inlet pipe and a sleeve extending from the air inlet pipe, a cavity is provided inside the sleeve, and an air intake hole is opened in the sleeve to communicate with the cavity; a second tubular member, comprising a receiving pipe and an air outlet pipe extending from the receiving pipe, the receiving pipe corresponding 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 to each other, and at least one air inlet connecting the cavity and the inside of the receiving pipe is arranged between the first ring body and the second ring body groove; Wherein, after the gas enters the cavity from the air inlet, it will flow through the air inlet groove and the receiving pipe in sequence and flow out from the air outlet pipe, thereby forming a negative pressure channel inside the air inlet pipe. The negative pressure joint of claim 1, wherein the air inlet pipe has a center line, the air outlet pipe also has a center line, and the extension of the center line of the air inlet pipe coincides with the center line of the air outlet pipe. The negative pressure joint of claim 2, wherein the air intake hole also has a center line, and the extension of the center line of the air intake hole is perpendicular to the center line of the air inlet pipe. The negative pressure joint as claimed in claim 1, wherein a conical hole is arranged inside the receiving pipe, and the inner diameter of the conical hole at an end adjacent to the air outlet pipe is larger than the inner diameter of an end away from the air outlet pipe. The negative pressure joint as claimed in claim 4, wherein the receiving pipe has a center line, and an internal angle is formed between the center line of the receiving pipe and the wall surface of the tapered hole, and the angle of the internal angle is between 6°~ 26˚. The negative pressure joint as claimed in claim 5, wherein the angle of the inner included angle is between 12° and 20°. The negative pressure joint of claim 6, wherein the inner angle is 16°. The negative pressure joint of claim 4, wherein the second ring body has a socket and a gas increasing section extending backward from the socket, the socket is socketed on the first ring body, 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 stop ring is formed on the outside of the receiving pipe to stop the sleeve. The negative pressure joint as claimed in claim 1, wherein an oblique conical surface is formed on the outside of the first ring body, and the air inlet groove is arranged on the oblique conical surface. A debris collection device for a sewing machine, comprising: an air conveying mechanism, including an air pressure source, a first air conveying pipe and a second air conveying pipe respectively connected to the air pressure source; a cloth waste conveying mechanism, including a hopper, a A first feeding pipe, a negative pressure joint as described in any one of claims 1 to 10, and a second feeding pipe, the two ends of the first feeding pipe are respectively connected to the hopper and the first cylinder The air inlet pipe of the part, the first air transmission pipe is connected to the air inlet hole of the first cylindrical part; The lint conveying mechanism includes a thread cutting dipper, a first transmission pipe, as claimed in item 1 to Another negative pressure joint described in any one of 10 and a second transmission line pipe, the two ends of this first transmission line pipe are respectively connected to this input of this thread cutting dipper and another this first cylinder piece. Air pipe, the second air pipe is connected to the air inlet hole of the other first cylinder; and a collection bag, the two ends of the second material pipe are respectively connected to the air outlet of the second cylinder and the collection The two ends of the second line pipe are respectively connected to the air outlet pipe and the collection bag of the other second cylindrical piece. The debris collection device for a sewing machine as claimed in claim 11, wherein the air delivery mechanism further comprises two regulating valves, one of which is connected to the first gas delivery pipe and the air inlet hole of the first cylindrical member, The other adjusting valve is connected to the second air pipe and the other air inlet hole of the first cylinder.

Images