CN211693519U

CN211693519U - Compact sealing device for wire drawing wheel shaft

Info

Publication number: CN211693519U
Application number: CN201922433106.1U
Authority: CN
Inventors: 谭礼春; 刘倩; 孟令云
Original assignee: Jiangsu Honta Machinery Co ltd
Current assignee: Jiangsu Honta Machinery Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-10-16
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a compact sealing device for wire drawing wheel shafts, which comprises a transmission box body and a plurality of wire drawing wheel shafts which are rotatably supported on the transmission box body through wire drawing wheel bearings, wherein a moving ring is fixedly connected on each wire drawing wheel shaft, an inner hole of the moving ring is in sealing connection with each wire drawing wheel shaft through a sealing ring, a moving sealing ring is arranged on the outer end surface of the moving ring, a bearing end cover is arranged on the transmission box body in a sealing way, a sealing through cover is arranged on the bearing end cover in a sealing way, a static ring is arranged on the inner side of the sealing through cover, a spring is arranged between the static ring and the sealing through cover, the static ring can be movably supported on the sealing through cover in the axial direction through the sealing ring, and a static sealing ring matched with the moving sealing ring is arranged on the; the sealing through cover is provided with a guide pin hole, the stationary ring is fixedly connected with a guide pin, and the guide pin is movably inserted in the guide pin hole. Adopt the utility model discloses a wire drawing shaft compact sealing device can guarantee the sealed effect of ideal, and compact structure.

Description

Compact sealing device for wire drawing wheel shaft

Technical Field

The utility model relates to a wire drawing machine is used in the wire and cable production, especially relates to an improvement of last wire drawing wheel axle sealing device of wire drawing machine.

Background

The wire drawing machine is a necessary device for forming a wire core in the manufacturing process of a wire and cable, a wire drawing wheel in the wire drawing machine is fixedly connected with an overhanging end of a wire drawing wheel shaft, the wire drawing wheel shaft is rotatably supported on a transmission box body through a wire drawing wheel bearing, and because the drawing force required by the wire drawing machine is large and the wire drawing wheel shaft is loaded in the wire drawing process, the bearing for supporting the wire drawing wheel shaft needs to be fully lubricated and generally adopts an oil spraying lubrication mode, thus a reliable sealing device needs to be arranged between the transmission box body of the wire drawing machine and the wire drawing wheel shaft, the sealing of the corresponding part in the existing wire drawing machine usually adopts a sealing ring or an axial labyrinth sealing structure, the sealing ring of the sealing ring is easy to damage, the axial size of the axial labyrinth sealing structure is long, the axial distance between the wire drawing wheel and the wire drawing wheel bearing is increased, the deflection of the overhanging, but also the radial runout of the wire drawing wheel shaft at the sealing device is enlarged to influence the sealing effect of the sealing device, so that the two sealing structures are not ideal.

SUMMERY OF THE UTILITY MODEL

The above-mentioned not enough to prior art exists, the utility model aims to solve the technical problem that a wire drawing shaft compact sealing device is provided, it can guarantee the sealed effect of ideal, and compact structure.

In order to solve the technical problem, the utility model discloses a compact sealing device of wire drawing wheel axle, including transmission box, a plurality of wire drawing wheel axles that rotate the supporting on transmission box through the wire drawing wheel bearing, the last rotating ring that links firmly of wire drawing wheel axle, this rotating ring hole passes through sealing washer and wire drawing wheel axle sealing connection, installed the dynamic seal ring on the outer terminal surface of rotating ring, seal the bearing cap on transmission box, seal the sealed through cover on the bearing cap, the inboard of sealed through cover is installed the quiet ring, be equipped with the spring between quiet ring and sealed through cover, the quiet ring can be along the sealed supporting of axial activity on sealed through cover through the sealing washer, install the quiet sealing ring that matches with dynamic seal ring on the inboard terminal surface of quiet ring; the sealing through cover is provided with a guide pin hole, the stationary ring is fixedly connected with a guide pin, and the guide pin is movably inserted in the guide pin hole.

In the structure, as the movable ring is fixedly connected on the wire drawing wheel shaft, the inner hole of the movable ring is connected with the wire drawing wheel shaft in a sealing way through the sealing ring, the outer end surface of the movable ring is provided with the movable sealing ring, the transmission box body is provided with the bearing end cover in a sealing way, the bearing end cover is provided with the sealed transparent cover in a sealing way, the inner side of the sealed transparent cover is provided with the static ring, a spring is arranged between the static ring and the sealed transparent cover, the static ring can be movably supported on the sealed transparent cover along the axial direction through the sealing ring in a sealing way, the inner end surface of the static ring is provided with the static sealing ring matched with the movable sealing ring, static sealing is respectively arranged between the wire drawing wheel shaft and the movable ring, between the transmission box body and the bearing end cover and between the bearing end cover, good sealing effect can be ensured through the sealing ring, and the sealing between the sealed transparent cover and the wire drawing wheel shaft is ensured by the mechanical sealing pair formed by the static, the static ring keeps the movement trend towards the inner side through the spring arranged between the static ring and the sealing transparent cover, so that the static sealing ring on the static ring is tightly attached to the dynamic sealing ring, the dynamic sealing ring which does rotary motion and the static sealing ring which is in a circumferential static state can not generate lubrication leakage, an ideal sealing effect is achieved, the static ring can be movably and axially supported on the sealing transparent cover in a sealing way through the sealing ring, the static ring can move towards the inner side under the action of the spring and is tightly attached to the dynamic sealing ring to compensate the abrasion between the dynamic sealing ring and the static sealing ring, and the sealing between the static ring and the sealing transparent cover is also ensured; the whole sealing device consists of a movable ring and a static ring which are positioned in a bearing end cover, the sealed through cover only occupies a small axial space outside the bearing end cover, the structure is compact, the normal operation of the wire drawing wheel cannot be influenced by the increase of the deflection of the wire drawing wheel shaft due to the long overhang of the wire drawing wheel shaft, the operation of the wire drawing wheel shaft is balanced, and the sealing effect of a sealing pair is better.

And because the sealing transparent cover is provided with the guide pin hole, the stationary ring is fixedly connected with the guide pin, and the guide pin is movably inserted in the guide pin hole, the stationary ring fixedly connected with the guide pin can only axially shift relative to the sealing transparent cover but can not relatively rotate due to the arranged guide pin, so that the sealing ring movably supported between the stationary ring on the sealing transparent cover and the sealing transparent cover works in a stationary sealing environment, and the sealing effect of the whole sealing device is further ensured.

The utility model discloses a preferred embodiment wire drawing wheel is epaxial to be linked firmly the rotating ring through key and for the axle retaining ring. By adopting the embodiment, the movable ring and the wire drawing wheel shaft can be reliably connected, and the axial positioning is realized by adopting the axial retainer ring, so that the structure is compact.

In another preferred embodiment of the present invention, the sealing ring is an O-ring. By adopting the embodiment, the O-shaped sealing ring has a simple structure and a good static sealing effect.

The utility model discloses a still another preferred embodiment be equipped with a plurality of spring holes on the sealed medial surface that passes through the lid, each spring hole is along circumference equipartition, each spring is located downthehole separately to the spring. By adopting the embodiment, the plurality of springs are uniformly distributed along the circumferential direction, and the balance of the axial pushing force of the static ring can be ensured.

The utility model discloses further preferred embodiment, the outside of quiet ring is equipped with the circular bead, and this circular bead passes through the sealing washer sealed grafting in sealed hole of passing through the lid, and quiet ring can follow axial activity ground through this circular bead and support on sealed passing through the lid. By adopting the embodiment, the movable support of the sealing through cover to the static ring is stable, the shoulder can be positioned at the same axial position with the spring, and the structure is compact.

In another preferred embodiment of the present invention, the guide pin is a chamfered pin, and the chamfered pin has a thickness smaller than a diameter of the guide pin in a radial direction of the stationary ring. By adopting the embodiment, the static ring and the sealed transparent cover can be ensured to be capable of flexibly axially moving and limiting circumferential rotation, the installation is convenient, and the requirement on manufacturing precision can be lower.

Drawings

The following provides a further detailed description of the compact seal device for a wire drawing axle according to the present invention with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic structural view of one embodiment of a compact seal device for a wire drawing wheel shaft according to the present invention;

FIG. 2 is an enlarged partial view of portion I of the structure of FIG. 1;

FIG. 3 is an enlarged partial view of region II of the structure of FIG. 1;

fig. 4 is a cross-sectional view taken at a-a in the structure shown in fig. 3.

In the figure: 1-a transmission box body, 2-a wire drawing wheel bearing, 3-a bearing end cover, 4-a movable ring, 5-a spring, 6-a spring hole, 7-a sealing through cover, 8-a stationary ring, 9-a wire drawing wheel shaft, 10-a sealing ring, 11-a stationary sealing ring, 12-a movable sealing ring, 13-a guide pin hole and 14-a guide pin.

Detailed Description

In the compact sealing device for the wire drawing wheel shafts shown in fig. 1, a transmission case body 1 is a supporting component of a plurality of wire drawing wheel shafts 9 on a wire drawing machine, a transmission device between the wire drawing wheel shafts 9 is arranged in the transmission case body 1, the plurality of wire drawing wheel shafts 9 are rotatably supported on the transmission case body 1 through wire drawing wheel bearings 2, the wire drawing wheel bearings 2 are sprayed with oil and lubricated through rectangular oil pipes arranged on the inner side of the transmission case body 1 and oil holes communicated with the rectangular oil pipes on the transmission case body 1 and the wire drawing wheel bearings 2, and the wire drawing wheels of the wire drawing machine are arranged at the extending ends of the wire drawing wheel shafts 9.

Referring to fig. 2, a moving ring 4 is fixedly connected to a wire drawing wheel shaft 9 through a key and a shaft retainer ring, the shaft retainer ring is positioned at the inner side end of the moving ring 4, the inner hole of the moving ring 4 is connected with the wire drawing wheel shaft 9 through a seal ring 10 in a sealing manner, a moving seal ring 12 is arranged on the outer end face of the moving ring 4, a bearing end cover 3 is arranged on a transmission box body 1 through the seal ring 10 in a sealing manner, the inner side end of the bearing end cover 3 axially limits the wire drawing wheel bearing 2 through a spacer bush, a seal through cover 7 is arranged on the bearing end cover 3 through the seal ring 10 in a sealing manner, the wire drawing wheel shaft 9 extends out of the transmission box body 1 through the inner hole of the seal through cover 7, a stationary ring 8 is arranged on the inner side of the seal through cover 7, a stationary seal ring 11 matched with the moving seal ring 12 is arranged on the inner side end face of the stationary ring 8, the stationary ring 8 can be movably supported on the seal through cover 7 in a, the static sealing ring 11 and the dynamic sealing ring 12 are kept to be tightly attached, as a preferred embodiment, the static ring 8 is sleeved on the wire drawing wheel shaft 9 in an empty mode, a shoulder is arranged on the outer side of the static ring 8, the shoulder is inserted into an inner hole of the sealed transparent cover 7 in a sealing mode through a sealing ring 10, the static ring 8 can be movably supported on the sealed transparent cover 7 in the axial direction through the shoulder, a plurality of spring holes 6 are formed in the end face of the inner side of the sealed transparent cover 7, the number of the spring holes 6 can be 6-12 generally, the spring holes 6 are uniformly distributed along the circumferential direction, the springs 5 are respectively arranged in the spring holes 6, the springs 5 are helical compression springs, a core column used for mounting the springs 5 is arranged on the static ring 8, the core column inserted into the inner hole of the springs 5 is sleeved, and.

Referring to fig. 3 and 4, a guide pin hole 13 is formed in the sealing transparent cover 7, a guide pin 14 is fixedly connected to the stationary ring 8, the guide pin 14 is movably inserted into the guide pin hole 13, one or two guide pin holes 13 and two or more guide pins 14 are provided, the two guide pin holes 13 and the corresponding guide pins 14 are circumferentially and symmetrically distributed, as a preferred embodiment, the guide pin 14 is a chamfered pin, and the thickness of the chamfered pin in the radial direction of the stationary ring 8 is smaller than the diameter of the guide pin 14.

The above description has been presented only for the purpose of illustrating certain preferred embodiments of the invention, and it is not to be taken as a limitation on the invention, as many modifications and variations are possible. The spring 5 may be a disc spring instead of a coil compression spring as described above; a plurality of spring holes 6 are not uniformly distributed on the end surface of the inner side of the sealed through cover 7 along the circumferential direction, but a ring groove concentric with the sealed through cover 7 is arranged on the end surface of the inner side of the sealed through cover 7, and the springs 5 are arranged in the ring groove; the movable ring 4 can also be fixedly connected to the wire drawing wheel shaft 9 through a set screw instead of a key and a shaft retainer ring. Therefore, any improvement and changes made on the basis of the basic principle of the present invention should be considered as falling within the protection scope of the present invention.

Claims

1. The utility model provides a wire drawing shaft compact sealing device, includes transmission case (1), rotates a plurality of wire drawing shaft (9) of supporting on transmission case (1) through wire drawing wheel bearing (2), its characterized in that: a moving ring (4) is fixedly connected to the wire drawing wheel shaft (9), an inner hole of the moving ring (4) is connected with the wire drawing wheel shaft (9) in a sealing mode through a sealing ring (10), a moving sealing ring (12) is installed on the outer end face of the moving ring (4), a bearing end cover (3) is installed on the transmission box body (1) in a sealing mode, a sealing transparent cover (7) is installed on the bearing end cover (3) in a sealing mode, a static ring (8) is installed on the inner side of the sealing transparent cover (7), a spring (5) is arranged between the static ring (8) and the sealing transparent cover (7), the static ring (8) can be movably supported on the sealing transparent cover (7) in a sealing mode along the axial direction through the sealing ring (10), and a static sealing ring (11) matched with the moving sealing ring (12) is installed on the end face of the inner side of; the sealing transparent cover (7) is provided with a guide pin hole (13), the stationary ring (8) is fixedly connected with a guide pin (14), and the guide pin (14) is movably inserted into the guide pin hole (13).

2. The spool axle compact seal arrangement of claim 1, wherein: and a movable ring (4) is fixedly connected to the wire drawing wheel shaft (9) through a key and a shaft retainer ring.

3. The spool axle compact seal arrangement of claim 1, wherein: the sealing ring (10) is an O-shaped sealing ring.

4. The spool axle compact seal arrangement of claim 1, wherein: the inner side end face of the sealed transparent cover (7) is provided with a plurality of spring holes (6), the spring holes (6) are uniformly distributed along the circumferential direction, and the springs (5) are respectively arranged in the spring holes (6).

5. The spool axle compact seal arrangement of claim 1, wherein: the outer side of the static ring (8) is provided with a shoulder which is inserted into an inner hole of the sealed through cover (7) in a sealing mode through a sealing ring (10), and the static ring (8) can be movably supported on the sealed through cover (7) in the axial direction through the shoulder.

6. The spool axle compact seal arrangement of claim 1, wherein: the guide pin (14) is a chamfered pin, and the thickness of the chamfered pin in the radial direction of the stationary ring (8) is smaller than the diameter of the guide pin (14).