TWI426197B - Rotary joint and rotary work table using the same - Google Patents

Description

Rotary joint and rotary table using the same

The present invention relates to a rotary joint, and more particularly to a rotary joint connecting a pipe and a rotary table using the rotary joint.

A rotary table includes a base, a rotary table disposed on the base, a workstation disposed on the rotary table, a supply conduit, and a rotary joint disposed on the supply conduit. The supply pipeline connects the workstation and external fluid supply such as gas or liquid to maintain the normal operation of the workstation. The rotary joint includes an input member and an output member. The output member is provided with an output hole, and the input member is provided with an input hole, and the output member is rotatably mounted on the input member, and the input hole and the output hole are also kept in communication when the rotary joint rotates, so that when the rotary table rotates, The fluid supply also continuously supplies liquid or gas to the workstation to keep the workstation working.

However, the above rotary joint generally only supports a single channel. If there are multiple workstations, a plurality of supply pipes and a plurality of rotary joints are required, and the pipes are twisted together during work, which affects the use.

In view of the above, it is necessary to provide a rotary joint suitable for a plurality of pipes and a rotary table using the rotary joint.

A rotary joint includes an input assembly and an output member rotatable relative to the input assembly. The input component includes an input member, the input member is provided with an input hole, and the output member is provided with an output hole. The rotary joint further includes a rotating shaft fixedly coupled to the output member and two seal members on the outer wall of the rotating shaft. The input member is rotatably sleeved on the rotating shaft, and the inner wall of the input member and the outer wall of the rotating shaft and the two sealing members together form an annular passage communicating with the input hole. A conveying hole connecting the annular passage and the output hole of the output member is opened in the rotating shaft.

A rotary table includes a base, a rotary joint fixed to the base, a rotary table rotatably disposed on the base, and a workstation disposed on the rotary table. The rotary joint includes an input assembly and an output member rotatable relative to the input assembly. The input component includes an input member, and the input member has an input hole. An output hole is opened in the output member, and the output hole is connected to the workstation through a pipe. The rotary joint further includes a rotating shaft fixedly coupled to the output member and two seal members on the outer wall of the rotating shaft. The input member is rotatably sleeved on the rotating shaft. The inner wall of the input member and the outer wall of the rotating shaft and the two sealing members form an annular passage communicating with the input hole, and a conveying hole connecting the annular passage and the output hole of the output member is opened in the rotating shaft.

The rotary joint includes a rotating shaft, and the input member is sleeved on the rotating shaft, and the input member forms an annular passage together with the sealing member and the rotating shaft, and the rotating shaft is provided with a connecting output hole and a conveying hole of the annular passage, and the sleeve can be added as needed The number of input parts provided on the rotating shaft, and a corresponding number of conveying holes are provided in the rotating shaft to support multi-channel fluid transmission.

100‧‧‧Rotary joint

20‧‧‧Under the cover

201‧‧‧Axis hole

22‧‧‧Upper cover

221‧‧‧through holes

23‧‧‧Seal

24‧‧‧ Input components

240‧‧‧ Inputs

241‧‧‧ Subject

243‧‧‧Input connector

245‧‧‧ Sockets

25‧‧‧ shaft

251‧‧‧First Fixed Department

253‧‧‧Second fixed department

2511‧‧‧Fixed holes

2513‧‧‧Transport hole

2514‧‧‧Transportation Department

2515‧‧‧Guide

2516‧‧‧ openings

26‧‧‧ Outputs

261‧‧‧ base

2611‧‧‧through hole

2613‧‧‧Output hole

263‧‧‧Output tube

28‧‧‧Locker

29‧‧‧Circular channel

30‧‧‧ screws

400‧‧‧Rotary Workbench

41‧‧‧Base

43‧‧‧Rotating table

45‧‧‧Workstation

46‧‧‧Transmission tube

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a rotary joint of the present invention.

2 is a perspective exploded view of the rotary joint shown in FIG. 1.

Figure 3 is a cross-sectional view of the rotary joint of Figure 1 taken along line III-III.

Figure 4 is a cross-sectional view of the rotary joint of Figure 1 taken along line IV-IV.

Figure 5 is a perspective view of a rotary table using the rotary joint of Figure 1.

The rotary joint of the present invention and the rotary table using the rotary joint will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIGS. 1 and 2, the rotary joint 100 of the present invention includes a lower cover 20, an upper cover 22, a plurality of annular seals 23, an input assembly 24, a rotating shaft 25, an output member 26, and a lock member 28. A sealing member 23 is disposed in each of the lower cover 20, the upper cover 22, and the input assembly 24. The lower cover 20 and the upper cover 22 are respectively located on two sides of the input assembly 24, and are disposed on the rotating shaft 25 together with the input assembly 24, and the locking member 28 fixes the output member 26 to one end of the rotating shaft 25. In the present embodiment, the lock 28 is a screw.

The lower cover 20 has a circular shape, and a shaft hole 201 for mounting the rotating shaft 25 is opened at a middle portion thereof. A sealing member 23 is disposed on the inner wall of the lower cover 20.

The upper cover 22 corresponds to the lower cover 20, and a through hole 221 through which the rotating shaft 25 passes is disposed in a middle portion thereof, and a sealing member 23 is disposed in the upper cover 22 in the through hole 221 . Referring to FIG. 3 together, the input assembly 24 is comprised of four input members 240, each of which includes an annular body 241 and an input connector 243. The inner wall of the main body 241 is provided with a sealing member 23, and the side wall of the main body 241 is provided with an insertion hole 245 extending through the side wall. One end of the input joint 243 is fixed in the insertion hole 245, and the other end is exposed to the main body 241.

Referring to FIG. 4 together, the rotating shaft 25 has a cylindrical shape, and one end thereof is formed with a first fixing portion 251 having a smaller diameter for connecting with the upper cover 22, and the other end is formed with a second fixing portion 253 for the lower cover. 20 connected. The rotating shaft 25 defines a fixing hole 2511 on the end surface of the first fixing portion 251 and four conveying holes 2513 distributed around the fixing hole 2511. The fixing hole 2511 is a threaded groove for cooperating with the locking member 28 to fix the output member 26 to the rotating shaft 25. The four delivery holes 2513 extend in the rotating shaft 25 and are led out from the outer side wall of the rotating shaft 25. Each of the conveying holes 2513 includes a conveying portion 2514 extending axially from the end surface of the first fixing portion 251 along the rotation shaft 25 and a guiding portion 2515 extending radially from the outer side wall of the rotating shaft 25 along the rotating shaft 25. The guiding portion 2515 of each of the conveying holes 2513 has an opening 2516 on the outer side wall of the rotating shaft 25. The guiding portion 2515 communicates with the conveying portion 2514 such that the conveying hole 2513 is substantially L-shaped. The lengths of the conveying portions 2514 of the four conveying holes 2513 are different, and the positions of the openings 2516 of the four conveying holes 2513 are different in the circumferential direction of the rotating shaft 25, so that the opening 2516 of the four conveying holes 2513 is in the axial direction and the circumferential direction of the rotating shaft 25 Each of them is spaced apart from each other by a distance such that the opening 2516 of each of the delivery holes 2513 corresponds to an input member 240 to prevent mixing of fluids as they circulate therein.

The output member 26 includes a disk-shaped base 261 and a four-output tube 263. A through hole 2611 is defined in the middle of the base 261 for the fastener 28 to pass through, and the base 261 is provided with an output hole 2613 on the side wall thereof. The output hole 2613 is bent and extended in the base 261, and is led out on the surface of the base 261 for abutting with the conveying portion 2514 of the conveying hole 2513 of the rotating shaft 25. Each of the output tubes 263 is mounted in the output aperture 2613 from the side wall of the base 261 to direct the fluid.

The second fixing portion 253 of the rotating shaft 25 is disposed in the shaft hole 201 of the lower cover 20, and the sealing member 23 is in close contact with the peripheral wall of the second fixing portion 253, so that the second fixing portion 253 can be disposed in the shaft hole. The inside 201 rotates and maintains a seal with the seal 23. Then, the four input members 240 are sequentially sleeved on the rotating shaft 25, and each of the input members 240 corresponds to the opening 2516 of the conveying hole 2513. Then, the upper cover 22 is sleeved and mounted on the first fixing portion 251 of the rotating shaft 25, and the sealing member 23 in the upper cover 22 abuts against the outer side wall of the first fixing portion 251. The upper cover 22 and the adjacent input member 240, the adjacent two input members 240 and the lower cover 20 and the adjacent input member 240 are fixedly connected by screws 30, so that the upper cover 22, the input assembly 24 and the lower cover 20 are fixedly connected. Together, and rotated together on the rotating shaft 25. The input joints 243 of the four-input member 240 are arranged side by side in the axial direction of the rotating shaft 25, facilitating the installation of an external pipe on the input joint 243. The inner diameter of the input member 240 is slightly larger than the outer diameter of the rotating shaft 25, and the inner wall of the input member 240 and the outer wall of the rotating shaft 25 together with the adjacent two sealing members 23 define an annular passage 29, and the annular passage 29 and the corresponding input member 240 The input joint 243 and the corresponding opening 2516 of the rotating shaft 25 communicate with each other, and the input joint 243 can be kept in communication with the opening 2516 of the rotating shaft 25 even when the rotating shaft 25 rotates. The adjacent seals 23 may be respectively located in the adjacent two input members 240, or may be located in the input member 240 and the adjacent upper cover 22, respectively, or in the input member 240 and the adjacent lower cover 20. The output member 26 is placed on the first fixing portion 251 of the rotating shaft 25, the through hole 2611 of the output member 26 is aligned with the fixing hole 2511 of the rotating shaft 25, and the four output holes 2613 of the output member 26 and the four conveying holes 2513 of the rotating shaft 25 are one by one. Correspondingly, the locking member 28 passes through the through hole 2611 of the output member 26 and is screwed into the fixing hole 2511 of the rotating shaft 25 to fix the output member 26 to the rotating shaft 25.

Referring to FIG. 1 and FIG. 5, the rotary table 400 using the rotary joint 100 of the present invention further includes a base 41 fixedly coupled to the lower cover 20 of the rotary joint 100, a rotary table 43 rotatably disposed on the base 41, and The four workstations 45 are fixedly disposed on the rotating table 43. The workstation 45 is a specific device for processing a workpiece. Each workstation 45 is connected by a transfer tube 46 is connected to the output tube 263 of the output member 26. The transfer tube 46 may be a pipe having a certain mechanical strength such as a metal coil. The input joint 243 of the input member 240 is connected to a fluid supply source such as a gas pump or a fuel tank by a pipe. When the rotary table 43 is rotated, the workstation 45 rotates with the rotary table 43 while driving the rotary shaft 25 to rotate together in the input member 240. Since the input member 240 is annular, during the rotation of the rotating shaft 25, the fluid input from the input joint 243 of the input member 240 can flow from the annular passage 29 into the opening 2516 of the conveying hole 2513, and is input to the output member through the conveying hole 2513. 26, then delivered to the corresponding workstation 45 to operate the workstation 45. Stable fluid delivery is maintained even under rotation.

The rotary joint includes a rotating shaft 25, and the input member 240 is sleeved on the rotating shaft 25. The input member 240 and the sealing member 23 and the rotating shaft 25 form an annular passage 29, and the rotating shaft 25 defines a conveying hole 2513 communicating with the output hole 2613 and the annular passage 29. The number of input members 240 sleeved on the rotating shaft 25 can be increased as needed, and a corresponding number of conveying holes 2513 are opened in the rotating shaft 25 to support multi-channel fluid transmission. To reduce the number of workstations 45, the pipe connected to the corresponding input member 240 can be pulled out.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

100‧‧‧Rotary joint

25‧‧‧ shaft

2513‧‧‧Transport hole

2514‧‧‧Transportation Department

2515‧‧‧Guide

2516‧‧‧ openings

261‧‧‧ base

2613‧‧‧Output hole

263‧‧‧Output tube

29‧‧‧Circular channel

Claims (10)

A rotary joint includes an input assembly and an output member rotatable relative to the input assembly, the input assembly includes an input member, the input member is provided with an input hole, and the output member is provided with an output hole, and the improvement is: the rotation The joint further includes a rotating shaft fixedly connected to the output member and two sealing members on the outer wall of the rotating shaft, the input member is rotatably sleeved on the rotating shaft, and the inner wall of the input member, the outer wall of the rotating shaft and the two sealing members are formed together An annular passage communicating with the input hole, wherein the rotating shaft is provided with a conveying hole connecting the annular passage and the output hole of the output member. The rotary joint according to claim 1, wherein the number of the input members is at least two, the at least two input members are juxtaposed along the axial direction of the rotating shaft, and an annular passage is formed between each of the input members and the rotating shaft, and the conveying is performed. The number of holes and the output holes corresponds to the number of input members, and each of the communication holes communicates with an annular passage and an output hole of an input member. The rotary joint of claim 2, wherein the rotary joint further comprises an upper cover and a lower cover, the input assembly being located between the upper cover and the lower cover and fixedly connected to the upper cover and the lower cover. The rotary joint of claim 3, wherein the upper cover and the lower cover, the annular passage is formed by a corresponding input member, a rotating shaft, a seal in the input member, and another input adjacent to the input member The seal in the piece, or the seal in the upper cover or the seal in the lower cover is formed together. The rotary joint of claim 2, wherein each of the conveying holes has an opening on a side wall of the rotating shaft, each opening communicating with an annular passage of a corresponding input member, the opening of the plurality of conveying holes being on the side wall of the rotating shaft The upper axis is axially spaced apart. A rotary table includes a base, a rotary joint fixed to the base, a rotary table rotatably disposed on the base, a workstation disposed on the rotary table, and a transfer tube connecting the rotary joint and the workstation, the rotary joint including An input component and an output member rotated relative to the input component, the input component includes an input member, the input member is provided with an input hole, and the output member is provided with an output hole, and the output hole is connected to the workstation by a transmission tube, The improvement is that the rotary joint further includes a rotating shaft fixedly connected to the output member and two sealing members located on the outer wall of the rotating shaft, the input member is rotatably sleeved on the rotating shaft, the inner wall of the input member, the outer wall of the rotating shaft and the The two sealing members collectively form an annular passage communicating with the input hole, and the rotating shaft is provided with a conveying hole communicating with the output hole of the passage and the output member. The rotary table according to claim 6, wherein the number of the input members is the same as the number of the workstations, and the number thereof is at least two, and the at least two input members are juxtaposed along the axial direction of the rotating shaft, and each input member is An annular passage is formed between the rotating shafts. The number of the conveying holes and the output holes corresponds to the number of the input members. Each of the conveying holes communicates with an input member passage and an output hole, and each output hole is connected to the first through the transmission pipe. workstation. The rotary table according to claim 7, wherein the rotary joint further comprises an upper cover and a lower cover, the input assembly being located between the upper cover and the lower cover and fixedly connected to the upper cover and the lower cover. The rotary table according to claim 8, wherein the upper cover and the lower cover are connected by a corresponding input member, a rotating shaft, a sealing member in the input member, and another one adjacent to the input member. The seal in the input member, or the seal in the upper cover or the seal in the lower cover are formed together. The rotary table according to claim 9 of the patent application, wherein each of the conveying holes is turned The shaft sidewall has an opening, and each opening communicates with an annular passage of a corresponding input member, and the openings of the plurality of delivery holes are axially spaced along the rotation axis on the side wall of the rotating shaft.