CN115149371B

CN115149371B - Rotating device for machining wire harness assembly

Info

Publication number: CN115149371B
Application number: CN202210885710.1A
Authority: CN
Inventors: 李建龙; 张贤朋; 何瑞成
Original assignee: Wenzhou Huida Electric Appliance Co ltd
Current assignee: Wenzhou Huida Electric Appliance Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-12-30
Anticipated expiration: 2042-07-26
Also published as: CN115149371A

Abstract

The utility model relates to a technical field of pencil processing discloses a rotary device is used in processing of pencil subassembly, and it includes the frame, rotates the positioning seat that sets up in the frame, is used for driving the drive assembly of location seat to terminal jointing equipment pivoted, offer the through-hole that is used for supplying the wire rod to wear to establish on the positioning seat, set up the fixed slot with the through-hole intercommunication on the positioning seat, be provided with the extrusion subassembly that is arranged in supporting tight through-hole wire rod in the fixed slot, the extrusion subassembly includes the depression bar, is used for driving the depression bar to the piece that supports that the through-hole removed, the one end of depression bar is rotated through the pivot and is set up on the positioning seat, the other end links to each other with the piece that supports. This application is when wire rod tip crimping terminal, and accessible extrusion subassembly supports the wire rod in the tight through-hole to stability when improving wire rod crimping terminal.

Description

Rotating device for machining wire harness assembly

Technical Field

The application relates to the technical field of wire harness processing, in particular to a rotating device for processing a wire harness assembly.

Background

The wire harness assembly is a whole of equipment for providing service for a certain load source group, and is widely applied to control systems of automobile circuits, electrical equipment and the like. In the production process of the wire harness assembly, a coiled wire is generally straightened, then the straightened wire is cut into a proper length, and one end or two ends of the wire are crimped and connected with a terminal for conducting electricity according to requirements. When a wire harness assembly with a terminal crimped thereon is molded, a rotating device is used to transfer the end of a wire to a terminal connecting device.

The rotating device in the related art comprises a rack, a positioning seat rotatably arranged on the rack, and a driving motor arranged on the rack and used for driving the positioning seat to rotate towards a terminal connecting device, wherein a through hole for a wire to penetrate through is formed in the positioning seat.

In the process of implementing the present application, the inventors found that the technology has at least the following problems: to facilitate the passage of the wire into or out of the through-hole, the diameter of the through-hole is generally set to be larger than the diameter of the wire. The terminal connecting equipment works and the terminal is pressed in the wire rod, the wire rod easily shakes in the through hole, the stability is poor, and the improvement is needed.

Disclosure of Invention

In order to improve the stability when wire rod end crimping terminal, this application provides a rotary device for wire harness assembly processing.

The application provides a rotary device is used in processing of pencil subassembly adopts following technical scheme:

the rotating device for processing the wire harness assembly comprises a rack, a positioning seat and a driving assembly, wherein the positioning seat is rotatably arranged on the rack, the driving assembly is used for driving the positioning seat to rotate towards a terminal connecting device, a through hole for a wire to penetrate is formed in the positioning seat, a fixing groove communicated with the through hole is formed in the positioning seat, an extrusion assembly used for tightly abutting against the wire in the through hole is arranged in the fixing groove, the extrusion assembly comprises a pressing rod and a pressing piece used for driving the pressing rod to move towards the through hole, one end of the pressing rod is rotatably arranged on the positioning seat through a rotating shaft, and the other end of the pressing rod is connected with the pressing piece.

Through adopting above-mentioned technical scheme, when processing pencil subassembly, the wire rod is worn to establish in the through-hole, and drive assembly can drive the location seat and rotate to terminal connecting device is with the terminal crimping in the tip of wire rod, thereby forms pencil subassembly. Before starting terminal connecting device, usable pressing member drive depression bar removes to the through-hole for the depression bar supports the wire rod of tightly wearing to locate the through-hole, and when terminal connecting device during operation, the wire rod is difficult for rocking in the through-hole when receiving the pressure of blunting block among the terminal connecting device, and the machining precision is high, finished product is of high quality, helps reducing wire harness assembly's defective percentage, in order to avoid causing the raw materials extravagant, resources are saved.

Optionally, the pressing part includes a pressing cylinder connected to the positioning seat, a cylinder barrel of the pressing cylinder is hinged to the positioning seat, and a piston rod is hinged to one end of the pressing rod away from the rotating shaft.

Through adopting above-mentioned technical scheme, when the piston rod that supports the pressure cylinder stretches out and draws back, the one end that the pivot was kept away from to the depression bar can be to being close to or keeping away from one side of through-hole and remove for the depression bar supports tightly or loosens the wire rod. When the pressing rod tightly abuts against the wire, the wire is difficult to horizontally move or circumferentially rotate due to abutting and positioning, and stable connection of the wire and the terminal is facilitated when the terminal connecting equipment works. When the pressing rod loosens the wire, the wire is not stressed any more, and can horizontally move under the action of the external traction mechanism, so that the wire can be unloaded. In addition, because the piston rod of the pressing cylinder is hinged at the end part of the pressing rod far away from the rotating shaft, the force arm of the pressing cylinder during working is large, and the driving effect is good.

Optionally, a connecting rod is fixed at one end of the pressure lever, which is far away from the rotating shaft, and a pricking pin for scratching the wire sheath is fixed at one side of the connecting rod, which faces the through hole.

By adopting the technical scheme, the wire generally comprises the wire core used for conducting electricity and the sheath wrapped outside the wire core, and in order to avoid the sheath from interfering the connection of the wire core and the terminal, a part of the sheath needs to be stripped before the terminal is crimped, so that the wire core can be exposed. The pricking pin is arranged on the connecting rod, and when the pressing rod moves to one side close to the through hole, the pricking pin can move towards the wire synchronously so as to prick into the sheath of the wire. In the process that the wire rod is constantly marchd, the felting needle can be lacerated the sheath gradually for the sheath surface forms the mar, so that the terminal stretches into in the wire rod and the sinle silk contact by the mar, thereby saves the manual process of shelling the sheath, helps improving wire harness assembly's machining efficiency.

Optionally, the upper side of the connecting rod is fixed with a supporting block for supporting scratches in the wire sheath, the supporting block is located on one side of the puncture needle far away from the pressure rod, and the top end of the supporting block is not lower than the puncture needle.

Through adopting above-mentioned technical scheme, the felting needle pierces the sheath after, along with constantly marcing of wire rod, the kicking block can stretch into the mar of wire rod sheath gradually to with above-mentioned mar progressively increase, the terminal of being more convenient for stretches into in the wire rod and the contact of sinle silk.

Optionally, one side of the supporting block close to the puncture needle is provided with sharp teeth.

Through adopting above-mentioned technical scheme, the pointed tooth plays the effect of direction when the bracer immigrates the wire rod sheath, helps the bracer to immigrate the mar fast to the march of bracer influence wire rod is avoided.

Optionally, the driving assembly includes a driving motor arranged on the frame, a half gear detachably arranged on an output shaft of the driving motor, and a full gear engaged on one side of the half gear, and the positioning seat is fixedly arranged on the full gear.

Through adopting above-mentioned technical scheme, driving motor during operation, half gear can rotate along with driving motor's output shaft for half gear and full gear meshing transmission periodically, thereby realize that the positioning seat is rotatory periodically, and the drive effect is good.

Optionally, a mounting column is fixed on an output shaft of the driving motor, a driving block is integrally formed on a circumferential side wall of the mounting column, a driving groove in insertion fit with the driving block is formed in the inner wall of the half gear, and a stop bolt for preventing the driving block from being separated from the driving groove is connected to the mounting column through threads.

Through adopting above-mentioned technical scheme, the setting can be dismantled on the erection column to the half-gear, during the in-service use, can set the gear that has different numbers of teeth according to the turned angle demand at the erection column facial make the positioning seat can accurate commentaries on classics to terminal jointing equipment department, and drive assembly's suitability is strong, the practicality is good. When assembling the semi-gear, can locate the outside of erection column with the semi-gear cover earlier for the drive block stretches into in the drive groove, again with stop bolt threaded connection on the erection column, thereby utilize stop bolt to carry out spacingly to the semi-gear. It should be noted that the stop bolt should not be over-tightened in order to prevent the stop bolt from affecting the rotation of the half gear.

Optionally, one side of the positioning seat facing the wire penetrating direction is detachably provided with a guide pipe, and the inner diameter of the guide pipe is larger than the diameter of the wire.

Through adopting above-mentioned technical scheme, the stand pipe can supply the wire rod to wear to establish to increase the location length of wire rod, further improve the stability of wire rod. The stand pipe can be dismantled and set up on the positioning seat for the stand pipe can be torn open and trade, with the wire rod of the different diameters of adaptation.

Optionally, a hard ring is fixed at one end of the guide tube close to the positioning seat, a connection nut is rotatably arranged on the outer side of the hard ring, a connection solenoid in threaded fit with the connection nut is fixed at one side of the positioning seat close to the guide tube, and the connection solenoid and the through hole are coaxially arranged.

Through adopting above-mentioned technical scheme, the stand pipe links to each other through screw-thread fit's mode with the positioning seat, and joint strength between them is high, stability is good. Because the connecting nut is rotatably arranged on the hard ring, when the connecting nut is rotated, the hard ring and the guide pipe cannot synchronously rotate along with the connecting nut, and the operation is more convenient.

Optionally, annular spout and anticreep groove have been seted up to the circumference lateral wall intercommunication of hardring, anticreep groove is located the inboard of spout and the width is greater than the width of spout, coupling nut's inboard is fixed with slider and anticreep piece in proper order, the width of anticreep piece is greater than the width of spout, the anticreep piece slides and sets up in the anticreep groove the slider slides and sets up in the spout.

Through adopting above-mentioned technical scheme, when coupling nut relative hardring rotated, the anticreep piece can be followed anticreep groove and removed, the slider can be followed the spout and removed. The setting of anticreep piece can ensure the relative rotation of coupling nut and hard ring, also can prevent coupling nut and hard ring separation, helps improving the relative stability of coupling nut and hard ring.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the pressing piece can drive the pressing rod to tightly press the wire rod penetrating through the through hole, so that the stability of the wire rod is improved when the end part of the wire rod is pressed on the terminal, and the quality of a finished product of the wire harness assembly is improved;

2. when the pressing rod moves towards the through hole, the pricking pin can be embedded into the sheath of the wire, and in the moving process of the wire, the pricking pin can generate scratches on the sheath of the wire, and the supporting block can further support the scratches, so that the wire core of the wire is exposed, and the terminal is connected with the wire core;

3. the stand pipe passes through coupling nut and connects solenoid thread setting on the positioning seat, and it can supply the wire rod to pass to increase the location length of wire rod, further improve the stability of wire rod.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is an exploded view of the drive assembly in an embodiment of the present application.

FIG. 3 is a schematic diagram of the embodiment of the present application with the frame and the drive assembly removed.

Fig. 4 is an exploded view of the coupling nut, the hard ring, and the guide tube in the embodiment of the present application.

Fig. 5 is a schematic partial cross-sectional view of a connecting screw tube, a connecting nut, a hard ring, and a guide tube in an embodiment of the present application.

Description of reference numerals:

1. a frame; 2. positioning seats; 21. a through hole; 22. connecting a solenoid; 23. an extension pipe; 24. fixing grooves; 3. a drive assembly; 31. a drive motor; 311. mounting a column; 312. a drive block; 32. a half gear; 321. a drive slot; 33. all-gear; 34. a stop bolt; 35. a gasket; 4. a guide tube; 41. a hard ring; 411. a chute; 412. a drop-proof groove; 413. assembling and disassembling the port; 42. a connecting nut; 421. connecting grooves; 422. a slider; 423. an anti-drop block; 5. an extrusion assembly; 51. a pressure lever; 52. a pressing member; 521. pressing the cylinder; 53. a connecting rod; 54. a needle; 55. a support block; 551. sharp teeth; 6. a rotating shaft.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses rotary device is used in processing of wire harness assembly.

Referring to fig. 1, the rotating device for processing the wire harness assembly comprises a frame 1, a positioning seat 2 rotatably arranged on the frame 1, and a driving assembly 3 arranged on the frame 1 and connected with the positioning seat 2, wherein the driving assembly 3 is used for driving the positioning seat 2 to rotate towards the terminal connecting equipment. Above-mentioned terminal connecting device is for being used for crimping the terminal in the equipment of wire rod tip, and this equipment can be any one in punching machine, the riveting machine, and the specific structure of because of terminal connecting device is prior art and not the improvement point of this application, does not do here and does not describe repeatedly.

Referring to fig. 1 and 2, the driving assembly 3 includes a driving motor 31, a half gear 32 disposed on an output shaft of the driving motor 31, and a full gear 33 engaged with one side of the half gear 32, the barrel of the driving motor 31 is fixedly disposed on the rack 1, the output shaft upwardly penetrates through the rack 1 and is fixed with a mounting column 311, the half gear 32 is detachably disposed on an outer side of the mounting column 311, the full gear 33 is rotatably disposed on the rack 1, and the positioning seat 2 is fixed on an upper side of the full gear 33. The half gear 32 is a gear having teeth distributed only in a half of the circumferential side wall, and the full gear 33 is a gear having teeth distributed in the entire circumferential side wall. When the driving motor 31 is operated, the half gear 32 will rotate synchronously with the output shaft of the driving motor 31, so that the full gear 33 and the positioning base 2 rotate periodically.

In order to shorten the rotation path of the positioning base 2 returned to the initial position by the terminal connecting device, the driving motor 31 in this embodiment is a forward and reverse rotation motor, and in other embodiments, the driving motor 31 may be a stepping motor or the like.

Referring to fig. 2, the circumferential side wall of the mounting post 311 is integrally formed with two driving blocks 312, the circumferential inner wall of the half gear 32 is provided with two driving grooves 321, the two driving grooves 321 are circumferentially and uniformly distributed along the central axis of the half gear 32, and each driving block 312 can respectively extend into the corresponding driving groove 321 to realize the insertion of the half gear 32 and the mounting post 311, so that the mounting post 311 can drive the half gear 32 to synchronously rotate under the action of the driving motor 31.

Referring to fig. 2, in order to prevent the driving block 312 from being separated from the driving groove 321, a stopper bolt 34 is screwed on the upper side of the mounting post 311, a washer 35 is sleeved on a screw of the stopper bolt 34, and the diameter of the washer 35 is larger than that of the mounting post 311. After the half gear 32 is sleeved on the mounting post 311, the stop bolt 34 can be screwed on the mounting post 311, so that the half gear 32 is blocked by the gasket 35. In another embodiment, the half gear 32 may be directly restrained by the head of the stopper bolt 34 without providing the spacer 35.

Referring to fig. 1 and 3, a through hole 21 extending horizontally is formed in a side surface of the positioning seat 2, an inner diameter of the through hole 21 is larger than a diameter of a wire to be processed, and the wire can be inserted into the through hole 21 to rotate to the terminal connection device along with the positioning seat 2. One side of the positioning seat 2 towards the wire rod penetrating direction can be dismantled and is provided with the guide tube 4, and the internal diameter of the guide tube 4 is equal to the diameter of the through hole 21, so that the wire conduit can also be used for the wire rod to penetrate, and the positioning length of the wire rod is increased. In order to control the threading direction of the wire, the guide tube 4 in this embodiment is made of a hard plastic tube, such as PVC, and in other embodiments, the guide tube 4 may be a soft rubber tube.

Referring to fig. 4 and 5, a hard ring 41 is fixed on one end of the circumferential side wall of the guide tube 4 close to the positioning seat 2, a connection nut 42 is rotatably arranged on the outer side of the hard ring 41, a connection groove 421 for the hard ring 41 to extend into is formed in the connection nut 42, a sliding block 422 and an anti-dropping block 423 are sequentially fixed on the upper side of the inner wall of the connection groove 421, the anti-dropping block 423 is located on the inner side of the sliding block 422, and the width of the anti-dropping block 423 is greater than that of the sliding block 422. The circumferential side wall of the hard ring 41 is provided with a sliding groove 411 and a slip-off preventing groove 412 which are communicated with each other, the slip-off preventing groove 412 is positioned on the inner side of the sliding groove 411, the width of the slip-off preventing groove 412 is larger than that of the sliding groove 411, and the width of the sliding groove 411 is smaller than that of the slip-off preventing block 423. When the connection nut 42 and the hard ring 41 are assembled in place, the anti-drop block 423 is slidably disposed in the anti-drop groove 412, and the sliding block 422 is slidably disposed in the sliding groove 411, so as to improve the stability of the connection nut 42 when rotating relative to the hard ring 41.

Referring to fig. 4, in order to facilitate the detachment of the coupling nut 42 from the hard ring 41, the hard ring 41 is also provided with a detachment port 413 for the anti-detachment block 423 and the slider 422 to synchronously move out of the hard ring 41, and the detachment port 413 is communicated with the side surface of the hard ring 41 close to the positioning seat 2.

Referring to fig. 1 and 5, a connection screw 22 is fixed on one side of the positioning seat 2 close to the guide tube 4, the connection screw 22 and the through hole 21 are coaxially arranged, and the inner diameter of the connection screw 22 is equal to the diameter of the through hole 21, and an external thread matched with the connection nut 42 is arranged on the circumferential outer wall of the connection screw 22, so that the guide tube 4 is fixedly connected to the positioning seat 2 by the connection nut 42.

Referring to fig. 3, in order to further increase the threading length of the wire rod, an extension pipe 23 is fixed on one side of the positioning seat 2 away from the guide pipe 4, the extension pipe 23 and the through hole 21 are coaxially arranged, and a through hole for the wire rod to pass through is arranged in the middle of the extension pipe 23. The wire rod sequentially passes through the guide tube 4, the connecting solenoid 22, the positioning seat 2 and the extension tube 23 under the power of the external traction mechanism.

Referring to fig. 1 and 3, a fixing groove 24 with the top communicated with the through hole 21 is formed in the side surface of the positioning seat 2, an extrusion assembly 5 for tightly abutting against a wire rod in the through hole 21 is arranged in the fixing groove 24, the extrusion assembly 5 comprises a pressing rod 51 hinged to the positioning seat 2 and a pressing part 52 for driving one end of the pressing rod 51 to move towards the through hole 21, and one side of the pressing rod 51 facing the guide tube 4 is rotatably arranged on the positioning seat 2 through a rotating shaft 6 and one end of the pressing rod 51 facing away from the guide tube 4 is hinged to the pressing part 52.

Referring to fig. 1 and fig. 3, in particular, the pressing member 52 in this embodiment includes a pressing cylinder 521, a cylinder of the pressing cylinder 521 is hinged on the positioning seat 2, and a piston rod is hinged at one end of the pressing rod 51 away from the rotating shaft 6. When the piston rod of the pressing cylinder 521 extends, the pressing rod 51 rotates one side close to the through hole 21, so that the pressing rod 51 tightly presses the wire in the through hole 21; when the piston rod of the pressing cylinder 521 shortens, the pressing rod 51 rotates to a side away from the through hole 21, so that the pressing rod 51 loosens the wire in the through hole 21. In other embodiments, the pressing member 52 may be provided as any one of a hydraulic cylinder, an oil cylinder, and an electric push rod.

Referring to fig. 1 and 3, a connecting rod 53 is fixedly arranged on one side of the pressing rod 51 away from the rotating shaft 6, and in order to prevent the connecting rod 53 from affecting the work of the pressing cylinder 521, a yielding hole for the piston rod of the pressing cylinder 521 to penetrate out is formed in the connecting rod 53. The side of the connecting rod 53 facing the through hole 21 is fixed with a puncture needle 54 and a supporting block 55, the supporting block 55 is positioned on the side of the puncture needle 54 far away from the pressure rod 51, and the top end of the supporting block 55 is slightly higher than the top end of the puncture needle 54. When the pressing rod 51 moves downwards under the driving of the pressing cylinder 521, the pricking pin 54 pierces into the sheath of the wire to abut against the core of the wire, when the wire moves horizontally, the pricking pin 54 forms a scratch on the sheath, and the support block 55 further supports the scratch, so that the terminal is contacted with the core of the wire in the subsequent terminal crimping process. In addition, to facilitate the insertion of the block 55 into the scoring of the sheath, tines 551 are integrally formed on the side of the block 55 adjacent the spike 54, the tines 551 serving as guides when the block 55 is moved into the scoring.

The implementation principle of the rotating device for processing the wire harness assembly is as follows: when the wire harness assembly is processed, firstly, a wire is arranged in the through hole 21 in a penetrating mode, then the pressing cylinder 521 drives the pressing rod 51 to move towards the through hole 21, the pressing rod 51 tightly presses the wire, and the pricker 54 pierces a sheath of the wire; as the wire is advanced under the external pulling mechanism, the spike 54 creates a score in the sheath that can be spread apart by the spreader 55 so that the terminal contacts the core of the wire during subsequent processing. Then, the driving motor 31 is turned on, so that the positioning seat 2 drives the wire rod to move towards the terminal connection device. When the terminal connecting equipment works and presses the terminal at the end part of the wire rod, the pressing rod 51 can tightly support the wire rod, so that the stability of the wire rod is improved, and the quality of a finished product of the wire rod assembly is improved. It should be noted that to avoid the support 55 and lance 54 from interfering with the crimping of the terminal, the support 55 and terminal may be misaligned during the process.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a rotary device is used in processing of wire harness subassembly, includes frame (1), rotates positioning seat (2) of setting in frame (1), is used for driving positioning seat (2) to terminal jointing equipment pivoted drive assembly (3), offer on positioning seat (2) and be used for supplying through-hole (21) that the wire rod wore to establish, its characterized in that: a fixing groove (24) communicated with the through hole (21) is formed in the positioning seat (2), an extrusion assembly (5) used for tightly pressing a wire in the through hole (21) is arranged in the fixing groove (24), the extrusion assembly (5) comprises a pressing rod (51) and a pressing piece (52) used for driving the pressing rod (51) to move towards the through hole (21), one end of the pressing rod (51) is rotatably arranged on the positioning seat (2) through a rotating shaft (6), and the other end of the pressing rod (51) is connected with the pressing piece (52); the pressing piece (52) comprises a pressing cylinder (521) connected to the positioning seat (2), a cylinder barrel of the pressing cylinder (521) is hinged to the positioning seat (2), and a piston rod is hinged to one end, far away from the rotating shaft (6), of the pressing rod (51); the driving assembly (3) comprises a driving motor (31) arranged on the rack (1), a half gear (32) detachably arranged on an output shaft of the driving motor (31), and a full gear (33) meshed with one side of the half gear (32), and the positioning seat (2) is fixedly arranged on the full gear (33); one side, facing the wire penetrating direction, of the positioning seat (2) is detachably provided with a guide pipe (4), and the inner diameter of the guide pipe (4) is larger than the diameter of the wire; one end that stand pipe (4) are close to positioning seat (2) is fixed with hardring (41), the outside of hardring (41) is rotated and is provided with coupling nut (42), one side that positioning seat (2) are close to stand pipe (4) is fixed with and is connected solenoid (22) with coupling nut (42) screw-thread fit, it is coaxial setting with through-hole (21) to connect solenoid (22).

2. The rotating device for processing a wire harness assembly according to claim 1, wherein: a connecting rod (53) is fixed at one end of the pressure lever (51) far away from the rotating shaft (6), and a puncture needle (54) for cutting the wire sheath is fixed at one side of the connecting rod (53) facing the through hole (21).

3. The rotating device for processing a wire harness assembly according to claim 2, wherein: and a supporting block (55) for expanding scratches in the wire sheath is fixed on the upper side of the connecting rod (53), the supporting block (55) is positioned on one side of the puncture needle (54) far away from the compression bar (51), and the top end of the supporting block is not lower than the puncture needle (54).

4. The rotating device for processing a wire harness assembly according to claim 3, wherein: the side of the supporting block (55) close to the puncture needle (54) is provided with a sharp tooth (551).

5. The rotating device for processing a wire harness assembly according to claim 1, wherein: an output shaft of the driving motor (31) is fixedly provided with a mounting column (311), a driving block (312) is integrally formed on the circumferential side wall of the mounting column (311), a driving groove (321) in insertion fit with the driving block (312) is formed in the inner wall of the half gear (32), and a stop bolt (34) used for preventing the driving block (312) from being separated from the driving groove (321) is connected to the mounting column (311) in a threaded manner.

6. The rotating device for processing a wire harness assembly according to claim 1, wherein: annular spout (411) and anticreep groove (412) have been seted up to the circumference lateral wall intercommunication of hard ring (41), anticreep groove (412) are located the inboard and the width of spout (411) and are greater than the width of spout (411), the inboard of coupling nut (42) is fixed with slider (422) and anticreep piece (423) in proper order, the width of anticreep piece (423) is greater than the width of spout (411), anticreep piece (423) slide set up in anticreep groove (412) slider (422) slide and set up in spout (411).