WO2013091533A1

WO2013091533A1 - Forming drum transmission box sealing component and method thereof

Info

Publication number: WO2013091533A1
Application number: PCT/CN2012/086867
Authority: WO
Inventors: 袁仲雪; 王延书; 杨慧丽; 王永琴; 奚道双; 马慧
Original assignee: Yuan Zhongxue
Priority date: 2011-12-22
Filing date: 2012-12-18
Publication date: 2013-06-27
Also published as: CN103171163A

Abstract

The forming drum transmission box pneumatic sealing component and method thereof of the present invention use a transmission sealing device connected to a main shaft, thereby enabling the combination of air force transmission and sealing process during the main shaft rotation, enhancing the overall air seal of the transmission component, and ensuring the stable air pressure within the main shaft. The forming drum transmission sealing method comprises: an inner shaft bearing the forming drum locking block is sheathed inside of the inner circumference of the main shaft; disposed within the transmission box are a main shaft driving device for driving the main shaft to rotate circumferentially and an inner shaft driving device for driving the inner shaft to rotate circumferentially; the main shaft is connected to the outer end of the pneumatic sealing component, the main shaft being in communication with the air passage within the pneumatic sealing component; the pneumatic sealing component sleeves over the outer circumference of the inner shaft, the inner end of the pneumatic sealing component and the inner shaft are connected radially by rolling bearings and are sealed; when the main shaft and the inner shaft independently rotate circumferentially, the pneumatic sealing component guides compressed air into the inner air passage of the main shaft.

Description

Molding drum transmission box pneumatic sealing assembly and method thereof

The invention relates to a forming drum transmission box pneumatic sealing assembly applied to a rubber tire and a driving sealing method thereof, and belongs to the field of rubber machinery.

Background technique

Based on the preparation process of the existing rubber tire, the molding machine usually needs to separately set a forming drum for completing the green tire processing to transport the prepared carcass assembly and the belt-tread assembly to the forming drum, thereby completing the overall process. Manufacturing cycle.

In order to complete the reverse-packing process, the forming drum needs to be rotated circumferentially to fit the film layer, and the radial expansion and contraction of the drum surface is performed to realize the locking of the wire loop and the internal inflation of the tire embryo to realize the forming drum series. The driving mechanism of the action is a forming drum transmission box.

For example, the prior patent application discloses the following patent application, application number 200920188299. 2, the name is the main box of the all-steel radial truck tire forming machine, and the solution is the main box of the all-steel radial truck tire forming machine, including the forming drum, the main shaft, The box body, the roller cross bearing, the rotary valve and the pneumatic brake, the main shaft is connected with the box body through the roller cross bearing, the rotary valve is set on the main shaft, is located on the right side of the roller cross bearing, and the forming drum is connected with the main shaft through the bolt. Located on the left side of the roller cross bearing, the pneumatic brake is set on the main shaft, on the right side of the rotary valve. It also includes a fixed wall plate welded to the box. It is located between the rotary valve and the pneumatic idler. The screws are attached to the fixed wall panel. A short cylindrical roller bearing is mounted on the right end of the rotary valve body and coaxial with the rotary valve, and is fixed to the fixed wall plate by screws.

The starting point of the above patent application is to improve the service life of the bearing and the accuracy and stability of the spindle rotation. However, the structure only includes the main shaft and the inner shaft is not provided, so that the forming drum can only achieve circumferential rotation; The rotary valve is set on the main shaft and cannot be tightly sealed. Therefore, the air pressure in the main shaft is unstable, which directly affects the operation of the bead ring lock and the internal inflation of the tire. Moreover, the pneumatic brake is placed at the end of the main shaft. It also affects the maneuverability of the spindle rotation.

In view of this patent application.

Summary of the invention

The forming drum transmission box pneumatic sealing assembly and the method thereof have the purpose of solving the defects of the prior art and adopting a transmission sealing device that is coupled with the main shaft, thereby realizing the pneumatic transmission and the denseness when the main shaft rotates. The combination of sealing treatment improves the overall airtightness of the transmission components and ensures the stability of the air pressure in the main shaft.

Another object of the invention is to optimize the radial seal and the axial transmission mechanism of the main shaft and the inner shaft for the transmission box structure in which the main shaft and the inner shaft are coaxially arranged, thereby improving the driving performance of the overall transmission box.

The object of the invention is also to provide a forming reverse drum power to the forming drum for the problem that the sealing assembly is relatively easy to be damaged, so as to improve the convenience of the inspection and replacement work.

In order to achieve the above object, the forming drum drive sealing method is as follows:

The inner shaft carrying the forming drum lock block is sleeved on the inner diameter of the main shaft.

Inside the transmission case, there are respectively provided a spindle driving device for driving the main shaft for circumferential rotation, and an inner shaft driving device for driving the inner shaft for circumferential rotation;

The main shaft is butted to the outer end of the pneumatic seal assembly, and the main shaft communicates with the air passage inside the pneumatic seal assembly; the pneumatic seal assembly is sleeved on the outer diameter of the inner shaft, and the inner side end of the pneumatic seal assembly and the inner shaft radial direction are passed through the rolling bearing. Connected and sealed;

Therefore, while the main shaft and the inner shaft are respectively rotated circumferentially, the pneumatic sealing assembly introduces compressed air into the internal pneumatic circuit of the main shaft to complete the reverse wrapping forming operation process on the forming drum.

As in the above basic scheme, the main shaft is docked with the pneumatic sealing assembly, and the pneumatic sealing assembly is sleeved on the inner shaft to form an effective seal between the main shaft, the inner shaft and the pneumatic sealing assembly. Therefore, when the main shaft and the inner shaft are respectively rotated, the pneumatic transmission and the sealing member can be organically combined, and the pressure of the compressed air introduced into the internal gas path of the main shaft is stabilized under the premise of ensuring the sealing effect, thereby improving the transmission of the main shaft. performance.

In order to further balance and improve the performance of the sealing and pneumatic transmission, the following improvement measures can be taken for the structure and connection of the pneumatic sealing assembly, that is, the pneumatic sealing assembly includes a set of inner sleeves disposed on the outer diameter of the inner shaft, and an array sleeved therein. Outer sleeve of outer diameter;

The outer end of the inner sleeve is abutted on the main shaft, and the inner end of the inner sleeve is connected with the radial direction of the inner shaft through a rolling bearing and sealed, and an array gas path is arranged inside the inner sleeve;

The inside of the jacket is provided with an array of air supply ring grooves;

Therefore, the air supply ring groove and the gas path are sequentially supplied to the internal gas path of the main shaft.

In order to improve the connection and sealing effect between the internal structures of the pneumatic seal assembly, the two side ends of the array sleeve are respectively connected and sealed by the support ring, the rolling bearing and the inner sleeve.

In order to further optimize the sealing treatment of the pneumatic seal assembly and the inner shaft in the radial direction, the adjacent two outer sleeves are supported and spaced by the spacer ring, and sealed by the rotary shaft seal. Based on the above inventive concept, and the above-described forming drum drive sealing method, the present invention can simultaneously realize the forming drum transmission box pneumatic sealing assembly of the following contents:

The pneumatic drum seal assembly is disposed inside the transmission case, the outer end of the pneumatic seal assembly is abutted to the main shaft, and the air passages between the main shaft and the pneumatic seal assembly are connected to each other;

The pneumatic seal assembly is sleeved on the outer diameter of the inner shaft, and the inner end of the pneumatic seal assembly and the inner shaft radial direction are connected and sealed by a rolling bearing.

In order to improve the overall sealing and transmission performance of the pneumatic sealing assembly, the pneumatic sealing assembly comprises: an inner sleeve disposed on an outer diameter of the inner shaft; and an outer sleeve sleeved on the outer diameter of the inner sleeve;

The inside of the jacket is provided with an air supply ring groove in which an array and a gas path communicate with each other.

Wherein, at both side ends of the array casing, support rings and rolling bearings for connecting and sealing the inner sleeve are respectively provided.

A spacer ring, a rotating shaft seal for supporting, spacing, and sealing treatment is disposed between adjacent two outer casings. At the connection end of the inner sleeve and the inner shaft, a gland fixed by bolts is press-fitted, and the inner shaft penetrates through the gland.

In summary, the pneumatic drum seal assembly and method thereof of the present invention have the following advantages:

1. It can realize effective sealing when the spindle rotates, thus ensuring the stability of the internal air pressure of the spindle, and improving the accurate performance of the drive when driving the drum.

2. Optimize the radial sealing effect on the transmission components between the main shaft and the inner shaft, and improve the overall driving performance of the transmission box.

3. The seal is a consumable part. This design uses the seal assembly as a separate unit to provide the forming drum with a forming anti-inclusion force for easy maintenance and replacement.

DRAWINGS

The present invention will be further described with reference to the accompanying drawings.

Figure 1 is a schematic structural view of a forming drum transmission box;

Figure 2 is a cross-sectional view of Figure 1;

Figure 3 is a schematic structural view of the pneumatic seal assembly;

Figure 4 is a schematic cross-sectional view of Figure 3;

As shown in Figure 1 to Figure 4, spindle 1, inner shaft 2, gearbox 3, spindle drive 4, inner shaft drive 5, pneumatic seal assembly 6, rolling bearing 7, pneumatic circuit 8, inner sleeve 9, air supply ring groove 10, outer casing 11, support ring 12, spacer ring 13, rotary shaft seal 14, bolt 15, gland 16, spindle gas Road 17;

Spindle drive motor 21, spindle drive synchronous wheel 22, spindle drive timing belt 23, spindle expansion sleeve 24, inner shaft drive motor 25, inner shaft drive synchronous wheel 26, inner shaft drive timing belt 27.

detailed description

Embodiment 1, as shown in FIG. 1 and FIG. 2, the forming drum transmission box pneumatic sealing assembly is disposed inside the transmission box 3, the outer end of the pneumatic sealing assembly 6 is butted to the main shaft 1, and the main shaft air passage 17 inside the main shaft 1 is The gas paths inside the pneumatic seal assembly 6 are connected to each other;

The pneumatic seal assembly 6 is sleeved on the outer diameter of the inner shaft 2, and the inner end of the pneumatic seal assembly 6 and the inner shaft 2 are radially connected and sealed by the rolling bearing 7.

Wherein, the inner shaft 2 carrying the forming drum lock block is sleeved on the inner diameter of the main shaft 1;

Inside the transmission case 3, there are respectively provided a spindle drive device 4 for driving the spindle 1 for circumferential rotation, and an internal shaft drive device 5 for driving the inner shaft 2 for circumferential rotation;

The spindle drive unit 4 includes a spindle drive motor 21 mounted on the base of the transmission case 3, and the spindle drive motor 21 drives and drives the spindle 1 through a set of spindle drive timing wheels 22, a spindle drive timing belt 23, and a spindle expansion sleeve 24.

The inner shaft drive unit 5 includes an inner shaft drive motor 25 mounted on the base of the transmission case 3, and the inner shaft drive motor 25 connects and drives the inner shaft 2 through a set of inner shaft drive timing wheels 26, inner shaft drive timing belts 27.

As shown in Figures 3 and 4, the pneumatic seal assembly 6 includes a sleeve 9 disposed on the outer diameter of the inner shaft 2, and an outer sleeve 11 sleeved on the outer diameter of the inner sleeve 9.

At the connection end of the inner sleeve 9 and the inner shaft 2, a gland which is fixed by a bolt 15 is press-fitted, and the inner shaft 2 is inserted through the gland 16.

At both side ends of the array casing 11, support rings 12 and rolling bearings 7 for connecting and sealing the inner casing 9 are provided, respectively.

The outer end of the inner sleeve 9 abuts against the main shaft 1, and the inner end thereof is connected to the inner shaft 2 in the radial direction by the rolling bearing 7 and sealed, and an array gas path 8 is provided inside the inner sleeve 9.

The inside of the outer casing 11 is provided with an air supply ring groove 10 in which an array and a gas path 8 communicate with each other. Between the adjacent two outer casings 11, a spacer 13 for supporting, spacing and sealing treatment, and a rotary shaft seal 14 are provided.

The following forming drum drive sealing method can be realized by applying the above pneumatic sealing assembly 6: The inner shaft 2 carrying the forming drum lock block is sleeved on the inner diameter of the main shaft 1, and the main shaft driving device 4 for driving the main shaft 1 for circumferential rotation is disposed inside the transmission case 3, and the inner shaft 2 is driven for circumferential rotation. Inner shaft drive device 5;

The inner end of the main shaft 1 abuts the outer end of the pneumatic seal assembly 6, and the main shaft air passage 17 of the main shaft 1 communicates with the air passage inside the pneumatic seal assembly 6;

The pneumatic seal assembly 6 is sleeved on the outer diameter of the inner shaft 2, and the inner end of the pneumatic seal assembly 6 and the inner shaft 2 are radially connected and sealed by the rolling bearing 7;

Therefore, while the main shaft 1 and the inner shaft 2 are circumferentially rotated, the pneumatic seal assembly 6 introduces compressed air into the inner air passage of the main shaft 1 to complete the reverse-pack forming operation process on the forming drum.

The pneumatic seal assembly 6 includes a sleeve 9 disposed on the outer diameter of the inner shaft 2, and an outer sleeve 11 sleeved on the outer diameter of the inner sleeve 9;

The both ends of the array jacket 11 are connected and sealed by the support ring 12, the rolling bearing 7 and the inner sleeve 9, respectively.

The two adjacent outer casings 11 are supported and spaced by the spacer 13 and sealed by the rotary shaft seal 14.

The outer end of the inner sleeve 9 abuts on the main shaft 1, and the inner end thereof is connected to the inner shaft 2 in the radial direction by the rolling bearing 7 and sealed, and an array gas path 8 is arranged inside the inner sleeve 9;

The inside of the outer casing 11 is provided with an array of air supply ring grooves 10, thereby supplying air to the main shaft air path 17 inside the main shaft 1 through the air supply ring groove 10 and the air path 8.

In the present embodiment, a total of nine sets of air supply ring grooves 10 and air paths 8 are provided to communicate with the inner 9 lines of the main shaft 1 to realize introduction of compressed air. Taking the mechanical forming drum as an example, the different air supply states of the 9-way pipeline can respectively realize the rise of the left reverse pole, the return of the left and right reverse poles, the inflation of the middle drum, the locking of the left and right bead rings, and the left and right shoulders. Push-up, medium drum pressure detection, left and right vacuum suction, left and right reverse-wrapped cover fell back and right reversed-bar lifted. As described above, the preferred embodiment of the present invention has been described in connection with the embodiments of the present invention. It will be apparent to those skilled in the art from this disclosure that other alternative structures that conform to the design concept of the present invention are directly derived, and other structural features derived therefrom are also within the scope of the present invention.

Claims

A method for forming a drum driving seal, characterized in that: an inner shaft (2) carrying a forming drum lock block is sleeved on an inner diameter of the main shaft (1),

Inside the gearbox (3), there are respectively provided a spindle drive (4) for driving the spindle (1) for circumferential rotation, and an internal shaft drive for driving the inner shaft (2) for circumferential rotation (5) ;

The inner end of the main shaft (1) abuts the outer end of the pneumatic seal assembly (6), and the main shaft (1) communicates with the air passage inside the pneumatic seal assembly (6);

The pneumatic seal assembly (6) is sleeved on the outer diameter of the inner shaft (2), and the inner end of the pneumatic seal assembly (6) and the inner shaft (2) are connected and sealed by the rolling bearing (7) in the radial direction;

Therefore, while the main shaft (1) and the inner shaft (2) are circumferentially rotated, the pneumatic seal assembly (6) introduces compressed air into the internal gas path of the main shaft (1) to complete the reverse molding on the forming drum. Operating process.

2. The forming drum drive sealing method according to claim 1, wherein: the pneumatic seal assembly (6) comprises a set of inner sleeves (9) disposed on an outer diameter of the inner shaft (2), and The array is sleeved on the inner sleeve (9) outer diameter jacket (11);

The outer end of the inner sleeve (9) abuts against the main shaft (1), and the inner end of the inner sleeve (9) is connected to the inner shaft (2) by a rolling bearing (7) and sealed, and an array gas is disposed inside the inner sleeve (9). Road (8);

The inside of the outer casing (11) is provided with an array of air supply ring grooves (10) _;

Therefore, air is supplied to the internal air path of the main shaft (1) through the air supply ring groove (10) and the air path (8).

3. The forming drum drive sealing method according to claim 2, wherein: the two ends of the array casing (11) are connected to the inner sleeve (9) through the support ring (12) and the rolling bearing (7), respectively. Sealed treatment.

4. The forming drum drive sealing method according to claim 2 or 3, characterized in that: between the two adjacent outer casings (11), support and spacing are carried out by the spacer ring (13), and the rotary shaft seal is sealed (14). ) Sealed.

5. A pneumatic seal assembly for a forming drum transmission box, disposed inside the transmission case (3), characterized in that: the outer end of the pneumatic sealing assembly (6) is butted to the main shaft (1), the main shaft (1) and the pneumatic seal Component (6) The internal gas paths are connected to each other;

The pneumatic seal assembly (6) is sleeved on the outer diameter of the inner shaft (2), and the inner side of the pneumatic seal assembly (6) and the inner shaft (2) are connected and sealed by a rolling bearing (7).

6. The forming drum drive box pneumatic seal assembly according to claim 5, wherein: said pneumatic seal assembly (6) comprises: a set of inner sleeves (9) disposed on an outer diameter of the inner shaft (2) And arrays are set inside the inner sleeve

(9) outer diameter jacket (11);

The inside of the outer casing (11) is provided with an air supply ring groove (10) in which an array and a gas path (8) communicate with each other.

7. The forming drum transmission box pneumatic seal assembly according to claim 6, wherein: at both side ends of the array casing (11), support rings for connecting and sealing the inner casing (9) are respectively provided. (12), rolling bearing (7).

8. The forming drum transmission box pneumatic seal assembly according to claim 6 or 7, characterized in that: between the two adjacent outer casings (11), a spacer ring for supporting, spacing and sealing treatment is provided (13) ), rotate the shaft seal (14).

9. The pneumatic drum assembly pneumatic clutch assembly according to claim 8, wherein the connecting end of the inner sleeve (9) and the inner shaft (2) is press-fitted with a gland fixed by a bolt (15) ( 16), the inner shaft (2) runs through the gland (16).