CN201102313Y

CN201102313Y - Drum tile telescoping mechanism of tyre building machine

Info

Publication number: CN201102313Y
Application number: CNU2007200455214U
Authority: CN
Inventors: 杨建忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-24
Filing date: 2007-08-24
Publication date: 2008-08-20
Anticipated expiration: 2017-08-24

Abstract

The utility model discloses a drum pad expansion and contraction mechanism of a tire cover forming machine. The mechanism consists of a principal shaft, two fixing plates, a plurality of pad strips and a plurality of formed drum pads. The two fixing plates are fixed on the principal shaft with space. Radial holes are evenly distributed on the external circumference of the two fixing plates. Guide rods are arranged at the internal sides of the two ends of the pad strips. One end of the guide rod is connected fixedly with both ends of the pad strip, while the other end stretches into the corresponding radial hole on the fixing plate in a sliding way. An air cylinder, the body of which is conical, is arranged between the two fixing plates. A piston is arranged inside the cylinder body. Inner bosses are arranged at the same position of the internal side of the pad strips, and are equipped with bevels, which are matched with the conical cylinder body in a sliding way. The external sides of the pad strips are also connected with drawsprings. With the mechanism, both the maintenance workload and the production cost can be reduced. The mechanism is applicable for manufacturing the tire covers of motorbikes and bikes.

Description

Drum tile telescoping mechanism of tyre building machine

Technical field

The utility model relates to a kind of tire production equipment.Specifically, be the drum watt telescoping mechanism that is used for producing on the bench of motorcycle and cycle casing.

Background technology

At present, the drum watt telescoping mechanism that is used for producing motorcycle and cycle casing all is a traditional mechanism.This traditional mechanism comprises a main shaft, two fixed disks and some strip tiles and assembly drum watt.Two fixed disks all are fixed on the main shaft, and spacing is arranged between them, and the length of this spacing and strip tile is suitable.The excircle of two fixed disks is to being evenly equipped with radial hole, and all there is guide post each inboard, strip tile two ends.Said guide post is along the radial arrangement of strip tile, and their end is fixed on the medial surface at strip tile two ends, and the other end stretches on two fixed disks in the corresponding a pair of radial hole, and the two is and is slidingly matched.Between two fixed disks cylinder is arranged, the cylinder body of this cylinder is taper, and all there is centre bore at its two ends, and it is sealing shape, slip shape by this two centre bore and is enclosed within on the main shaft.Axial pore is arranged on the main shaft, and this axial pore is connected with inner chamber of cylinder block.Piston is arranged in the cylinder body, and piston is fixed on the interior main shaft of cylinder body.The same position of each strip tile inboard all has inner convex platform, and these inner convex platforms all have an inclined-plane, is between this inclined-plane and taper cylinder body to be slidingly matched.Also be connected with extension spring between the medial surface of strip tile.During work,, cylinder is slided along main shaft, thereby under the ramp effect of cylinder lateral surface and strip tile inboard, the strip tile radially outwards be upheld or contraction by the pressure of gas in the control cylinder.Because guide post one end stretches on two fixed disks in the corresponding a pair of radial hole, and the two is and is slidingly matched, and directly contacts between guide post and radial hole, and contact area is big, makes frictional resistance bigger.And frictional resistance-big, guide post and radial hole are just easy to wear.In case guide post and radial hole wearing and tearing will make the fit clearance of the two increase, even can't use.Therefore, adopt said structure, need often to change guide post or fixed disk, not only maintenance load is big, and can improve production cost.

The utility model content

Problem to be solved in the utility model provides a kind of drum tile telescoping mechanism of tyre building machine.Use this drum tile telescoping mechanism of tyre building machine, can reduce maintenance load, reduce production costs.

For addressing the above problem, take following technical scheme:

Drum tile telescoping mechanism of tyre building machine of the present utility model comprises a main shaft, two fixed disks and some strip tiles and assembly drum watt.Two fixed disks all are fixed on the main shaft, and spacing is arranged between them, and this spacing is corresponding with the centre-to-centre spacing of strip tile.The excircle of fixed disk is to being evenly equipped with radial hole, and all there is guide post each inboard, strip tile two ends.Said guide post is along the radial arrangement of strip tile, and their end is fixed on the medial surface at strip tile two ends, and the other end stretches on two fixed disks in the corresponding radial hole and the two is and is slidingly matched.Between two fixed disks cylinder is arranged, the cylinder body of this cylinder is taper, and all there is centre bore at its two ends, and it is sealing shape, slip shape by this two centre bore and is enclosed within on the main shaft.Axial pore is arranged on the main shaft, and this axial pore is connected with inner chamber of cylinder block; Piston is arranged in the cylinder body, and piston is fixed on the interior main shaft of cylinder body.The same position of each strip tile inboard all has inner convex platform, and these inner convex platforms all have an inclined-plane, is between this inclined-plane and taper cylinder body to be slidingly matched.Also be connected with extension spring between the lateral surface of strip tile.Be characterized in the radial hole on the fixed disk ball bushing being arranged, guide post is slidingly matched by being between this linear ball bearing and radial hole.

Take such scheme, have the following advantages:

Owing to be provided with ball bushing in the radial hole of the utility model on its fixed disk, guide post directly and this ball bushing be and be slidingly matched.Guide post only contacts with steel ball on the ball bushing, and does not contact with radial hole, has not only avoided the generation of radial hole abrasion condition, and the friction area of guide post is less, not easy to wear yet.Therefore, adopt structure of the present utility model, do not need often to change guide post or fixed disk, not only reduced maintenance load, and can reduce production costs.

Description of drawings

Fig. 1 is a drum tile telescoping mechanism of tyre building machine schematic diagram of the present utility model;

Fig. 2 is that schematic diagram is looked on the left side of Fig. 1, and top wherein is stretched condition, and the bottom is a contraction state;

Fig. 3 is the A place enlarged diagram of Fig. 1.

The specific embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, drum tile telescoping mechanism of tyre building machine of the present utility model contains a main shaft 2, two fixed disks 1 and some strip tiles 4 and assembly drum watts 5.Wherein, the diameter of two fixed disks 1 is identical, and they all are fixed on the main shaft 2, leave spacing between them, and this spacing is corresponding with the centre-to-centre spacing of strip tile 4.The excircle of two fixed disks 1 is to being evenly equipped with 12 radial holes, and each strip tile 4 two ends and 1 on respective fixation dish all have 12 guide posts 8.Assembly drum watts 5 is fixed on strip tile 4 outsides correspondingly, strip tile 4 two ends all are processed with screw, guide post 8 one ends are processed with external screw thread, in the screw that screws into strip tile 4 two ends of guide post 8 one ends by its end, thereby make the radial arrangement of guide post 8 along strip tile 4.Ball bushing 3 is installed in the radial hole, and guide post 8 other ends stretch on two fixed disks 1 and are slidingly matched in the corresponding a pair of radial hole and by being between these ball bushings 3 and radial hole.Be provided with cylinder between two fixed disks 1, cylinder body 12 lateral surfaces of this cylinder are taper, and its two ends all are processed with centre bore, and it is sealing shape, slip shape by this two centre bore and is enclosed within on the main shaft 2.The axial pore 10 of processing on the main shaft 2, this axial pore has two, one as supplying gas, one as exhaust, they all with cylinder body 12 intracavity inter-connections, by axial pore 10, can be in cylinder body 12 conveyings and discharge Compressed Gas.Be provided with piston 9 in the cylinder body 12, this piston is fixed on the main shaft 2 in the cylinder body 12, is between itself and cylinder body 12 inwalls to be slidingly matched.The same position of each strip tile 4 inboard all is processed with inner convex platform 11, and the outer surface of these inner convex platforms 11 all is processed with an inclined-plane 6, is between the lateral surface of this inclined-plane and taper cylinder body 12 to be slidingly matched.Respectively be processed with an annular groove on the same position at strip tile 4 lateral surface two ends, extension spring 7 is installed in the annular groove, make 4 on all strip tiles be loosening shape by extension spring 7 and be connected as a single entity.

During work,, cylinder body 12 is slided along main shaft 2, thereby under 6 effects of the inclined-plane of cylinder body 12 lateral surfaces and strip tile 4 inboards, strip tile 4 radially outwards be upheld or contraction by the pressure of control cylinder body 12 interior gases.

Claims

1. drum tile telescoping mechanism of tyre building machine comprises a main shaft (2), two fixed disks (1) and some strip tiles (4) and assembly drum watt (5); Two fixed disks (1) all are fixed on the main shaft (2), and spacing is arranged between them, and this spacing is corresponding with the centre-to-centre spacing of strip tile (4); The excircle of fixed disk (1) is to being evenly equipped with radial hole, and all there is guide post (8) each strip tile (4) inboard, two ends; Said guide post (8) is along the radial arrangement of strip tile (4), and their end is fixed on the medial surface at strip tile (4) two ends, and the other end stretches into that two fixed disks (1) are gone up in the corresponding radial hole and the two is and is slidingly matched; Two fixed disks have cylinder between (1), and the cylinder body of this cylinder (12) is taper, and all there is centre bore at its two ends, and it is sealing shape, slip shape by this two centre bore and is enclosed within on the main shaft (2); Main shaft has axial pore on (2), this axial pore and cylinder body (12) intracavity inter-connection; Piston (9) is arranged in the cylinder body (12), and piston (9) is fixed on the interior main shaft (2) of cylinder body (12); The inboard same position of each strip tile (4) all has inner convex platform (11), and these inner convex platforms (11) all have an inclined-plane (6), are between this inclined-plane and taper cylinder body (12) to be slidingly matched; Also be connected with extension spring (7) between the lateral surface of strip tile (4); It is characterized in that ball bushing (3) is arranged in the radial hole on the fixed disk (1), guide post (8) is slidingly matched by being between this linear ball bearing and radial hole.

2. drum tile telescoping mechanism of tyre building machine according to claim 1 is characterized in that there is screw at strip tile (4) two ends, and guide post (8) one ends have external screw thread, and guide post (8) one ends screw in the screw at strip tile (4) two ends by this.