CN214872852U

CN214872852U - Pressing device and tire component feeding device comprising same

Info

Publication number: CN214872852U
Application number: CN202120388731.3U
Authority: CN
Inventors: R·维瑟尔
Original assignee: VMI Holland BV
Current assignee: VMI Holland BV
Priority date: 2020-04-09
Filing date: 2021-02-22
Publication date: 2021-11-26
Anticipated expiration: 2031-02-22
Also published as: RS20210863A3; RS20210863A2; RS64717B1

Abstract

The present application relates to a stitching device and a tyre component serviser comprising said stitching device, wherein the stitching device is adapted to press a tyre component towards a drum, wherein the tyre component is fed towards the drum by a conveyor device in a feeding direction, wherein the stitching device comprises a pressure roller, a frame adapted to support the pressure roller relative to the drum, and a base adapted to support the frame, wherein the pressure roller is rotatable about a roller axis, said roller axis being concentric with the pressure roller and perpendicular to the feeding direction, said frame being tiltable relative to the base about a tilting axis, wherein the tilting axis is parallel to and eccentric to the roller axis, wherein the stitching device further comprises a drive means for driving the frame to tilt about the tilting axis in a sweeping forward movement relative to the feeding direction.

Description

Pressing device and tire component feeding device comprising same

Technical Field

The application relates to a stitching device and a tyre component feeding device comprising the stitching device.

Background

A conventional tyre component feeding device comprises a cutting tool and a conveying device for conveying a continuous strip of rubber to the cutting tool. The cutting tool comprises a cutting bar for supporting the continuous strip of adhesive and a suitable cutter for cutting the continuous strip of adhesive to a length to cooperate with the cutting bar to form the tire component. Directly downstream of the cutting tool, the tyre component servisers are provided with stitching devices for applying pressure to the tyre components as they are applied to the drum.

CN 203141856U discloses a known stitching device comprising a pressure roller having a plurality of independently movable discs for uniformly stitching to an uneven or varying thickness tyre component. The stitching device further comprises a fixing device supporting the entire stitching roller, which is capable of moving the stitching roller closer to and further away from the drum in a direction perpendicular to the circumferential surface of the drum.

SUMMERY OF THE UTILITY MODEL

A disadvantage of the known tire component serviser is that the continuous strip of rubber may behave unpredictably during the transfer from the conveyor to the cutting strip and/or from the cutting strip to the drum. In particular, the continuous strip of glue may not be perfectly flat at the cutting strip. Subsequent cuts may therefore be inaccurate and result in poor quality of the tire component.

An object of the present application is to provide a stitching device and a tire component feeding device comprising the stitching device, wherein the quality of a tire component can be improved.

A first aspect of the application provides a stitching device for pressing a tyre component, wherein the tyre component is fed by a conveyor device in a feeding direction towards a drum, wherein the stitching device comprises a pressure roller, a frame for supporting the pressure roller relative to the drum, and a foot for supporting the frame, wherein the pressure roller is rotatable about a roller axis, said roller axis being concentric with the pressure roller and perpendicular to the feeding direction, said frame being tiltable relative to the foot about a tilting axis, wherein the tilting axis is parallel to and eccentric to the roller axis, wherein the stitching device further comprises a drive for driving the frame to tilt about the tilting axis in a sweeping forward movement relative to the feeding direction.

When sweeping the movement forward relative to the feeding direction, the pressure rollers are able to contact and pull the tyre components together in a direction mainly in the feeding direction, thereby putting the tyre components under pressure in a range spanning the cutting strips extending between the conveyor and the drum. Thus, wrinkles and/or other irregularities can be reduced or avoided, thereby increasing the accuracy of the cutting and improving the quality of the tire component.

In a preferred embodiment said drive has an operating range defining a starting position and an end position of the frame, wherein said pressure roller is displaced, when the frame is moved from the starting position to the end position, with a direction vector, which can be decomposed into a first component parallel to the feeding direction and a second component perpendicular to the feeding direction and the direction of the tilting axis, wherein the first component is larger than the second component. The operating range is therefore limited to the above-mentioned, forward-sweeping motion of the frame.

More preferably, the inclination is such that the roller shaft is located on the upstream side of the inclination axis in the feeding direction when the frame is located at the start position. The pressure roller can thus be moved from a starting position directly above the tyre component in a sweeping motion to press against the tyre component and pull it in the feed direction.

More preferably, the tilting is performed in such a manner that the roll shaft is closer to the tilting shaft when the frame is located at the end position than at the start position. In other words, the roller shaft can be moved to a position closer to the tilt shaft due to the partial forward-sweeping motion.

In another embodiment, the drive is coupled to the frame on one side of the tilt axis, which is opposite the roller axis. The drive can therefore be placed at a greater distance from the pressure roller so as not to hinder its operation.

In another embodiment, the drive is a linear drive. More particularly, the drive is a pneumatic cylinder. The frame is capable of translating linearly driven linear motion to rotation about the tilt axis to move the pressure roller along the tire component in a sweeping motion.

A second aspect of the application provides a tyre component feeding device comprising a stitching device according to any of the above embodiments.

Preferably, the tyre component serviser further comprises a drum and a conveyor device for feeding tyre components in a feeding direction towards the drum.

More preferably, the tyre component serviser further comprises a cutting bar, said pressure roller being arranged to move tangentially along the cutting bar during a forward sweeping movement of the frame with respect to the feeding direction.

The tire component feeding apparatus incorporates the stitching device into its construction and therefore has the same technical advantages as the stitching device and its related embodiments.

The various aspects and features described and illustrated in this specification may be applied separately or randomly. These various aspects, in particular those relating to aspects and features described in the appended claims, may be the subject of divisional patent applications.

Drawings

The invention will be elucidated on the basis of an exemplary embodiment shown in the drawings, in which:

figure 1 is an isometric view of a tire component feeding apparatus including a stitching device of the present application;

FIG. 2 is a side view of the tire component feeder apparatus with the frame of the stitching device tilted to the starting position;

FIG. 3 is a side view of the tire component feeder apparatus with the frame of the stitching device tilted to a terminal position;

fig. 4 is a detail view at circle IV in fig. 3.

1. A pressing device; 2. a pressure roller; 20. a core; 21. a disk; 3. a frame; 30. a balance beam; 31. a side flange; 32. a side flange; 33. a support flange; 34. a support flange; 35. a shaft; 4. a base; 41. installing a flange; 42. installing a flange; 5. driving; 50. a cylinder body; 51. a piston; 52. a coupling member; 100. a tire component supply device; a inclined axis; a roll shaft B; c, a conveying device; d, drum; e, cutting the strips; f, feeding direction; l-side direction; a V vector; a first component of X; a Y second component; k cutter

Detailed Description

Fig. 1-3 show a tire component feeding device 100 having a conveyor C for feeding tire components (not shown) in a feeding direction F to a drum D. The tire component supplying device 100 can be used, for example, for supplying a bead of rubber, particularly a sidewall, to the drum D. The tire component feeding device 100 further includes a cutting strip E and a cutter K which cooperates with the cutting strip E to cut the tire component to a certain length. The cutting strip E is located between the conveyor C and the drum D in the feed direction F. In particular, the cutting strip E is located as close as possible to the drum D or in a position immediately upstream thereof in the feeding direction F so as to supply the tyre components directly from the cutting strip E to said drum D.

As shown in fig. 1, the tire component supply device 100 is provided with a stitching device 1 for pressing a tire component. More specifically, the stitching device 1 is located at or close to the drum D and/or the cutting strip E, so that the stitching device 1 can apply pressure to the tyre components located at or close to the drum D and/or the cutting strip E.

The laminating device 1 comprises a laminating roller 2, a frame 3 for supporting the laminating roller 2 relative to the drum D, and a base 4 for supporting the frame 3. The stitching roller 2 preferably comprises a central hub or core 20 and a plurality of discs 21 arranged around said hub or core 20. The discs 21 are individually movable or movable in groups to apply variable pressure across the width of the tyre components. For example, the disk 21 of the middle area may apply a stronger pressure to the tire member than the disk 21 of the side area of the pressure roller 2. The pressure roller 2 with individually controllable discs is also called a thousand-layer roller. The pressure roller 2 is rotatable around a roller axis B, which is concentric with the pressure roller 2 and perpendicular to the feed direction F.

The frame 3 comprises a balance beam 30 extending in a lateral direction L, perpendicular to the feeding direction F, across the tyre components or elevated above them. Each side of the balance beam 30 is provided with a

side flange

31, 32 which is coupled to a corresponding mounting

flange

41,42 of the base 4 to allow the frame 3 as a whole to be rotated, pivoted or tilted about a tilt axis a relative to the base 4. Preferably, the tilting axis a extends horizontally or substantially horizontally. The tilting axis a is perpendicular to the feeding direction F. The frame 3 further comprises two

support flanges

33,34, and a shaft 35 extending between said

support flanges

33,34 for rotatably supporting the pressure roller 2 on the frame 3. It is to be noted that the roller shaft B is parallel to the inclined axis a and spaced therefrom. In other words, the tilt axis a is parallel to but eccentric to the roller axis B.

The pressure device 1 further comprises a drive 5 for driving the tilting of the frame 3 about the tilting axis a. In the present exemplary embodiment, the drive 5 is a linear drive, in particular a cylinder, more particularly a pneumatic cylinder. Alternatively, other suitable drives, such as a rotary drive, may be used to induce tilting of the frame 3 about the tilting axis a.

The drive 5, as shown in fig. 1, comprises a cylinder 50, a piston 51 movable within said cylinder 50, and a coupling 52 connecting the piston 51 to the frame 3. In the present exemplary embodiment, the side where the drive 5 is coupled to the frame 3 is the opposite side of the roller shaft B with respect to the tilt axis a. Alternatively, the drive 5 may be coupled to the frame 3 on the same side as the roller axis B with respect to the tilt axis a.

The drive 5 is arranged to tilt the frame 3, and the pressure roller 2 supported by said frame 3, about a tilt axis a in a sweeping forward movement with respect to the feeding direction F. More particularly, the drive 5 has an operating range which defines a starting position of the frame 3, as shown in fig. 2, and an end position of the frame 3, as shown in fig. 3. Preferably, the drive 5 is limited to moving the frame 3 within said operating range. Therefore, the drive 5 cannot move the frame 3 beyond the start position and the end position and beyond the operation range. In the present embodiment, the operation range is limited to the movement of the control frame 3 to cause the roller shaft B of the pressure roller 2 to displace the lower half turn of the tilt axis a by an angle smaller than one hundred eighty degrees. More specifically, the angular displacement is limited to less than one hundred and eighty degrees within the lower half of a turn about tilt axis a.

When comparing fig. 2 with fig. 3, it can be seen that the pressure roller 2 is displaced and that during the sweeping forward movement of the frame 3 from the starting position to the end position the accompanying vector V can be decomposed into a first component X parallel to the feed direction F and a second component Y perpendicular to the feed direction F and to the tilt axis a, as shown in detail in fig. 4. The first component X is greater than the second component Y. More particularly, the magnitude of the first component X is at least twice that of the second component Y. The pressure roller 2 is thus able to move along a vector V within the operating range of the drive 5, wherein the vector V faces more in the feed direction than perpendicular to the feed direction F and the roller axis B.

As shown in fig. 2, when the frame 3 is tilted at the initial position, the roller shaft B is located on the side of the tilt axis a upstream of the tilt axis a in the feeding direction F. Thus, the pressure roller B is able to initiate its movement above the tyre component and subsequently pull the tyre component together when it moves towards the end position as shown in fig. 3.

As shown in fig. 3, when the frame 3 is tilted at the end position, the roller shaft B is located closer to the tilt axis a than at the start position.

The pressure roller 2 is arranged to move tangentially along the cutting strip E or along the tyre components supported on said cutting strip E during the forward sweeping movement of the frame 3 with respect to the feeding direction F.

When a forward sweeping movement occurs with respect to the feeding direction F, the pressure roller 2 is able to contact and pull the tyre components in a direction mainly in the feeding direction F, so that they are placed under pressure in a range spanning the cutting strip E extending between the conveyor C and the drum D. As a result, wrinkles and/or other irregularities can be reduced or prevented, thereby increasing the accuracy of the cut and improving the quality of the tire component.

Claims

1. A stitching device for applying pressure to a tyre component, characterized in that the tyre component is fed by a conveyor device in a feeding direction towards a drum, wherein the stitching device comprises a pressure roller, a frame for supporting the pressure roller relative to the drum, and a foot for supporting the frame, wherein the pressure roller is rotatable about a roller axis, which is concentric with the pressure roller and perpendicular to the feeding direction, and wherein the frame is tiltable relative to the foot about a tilting axis, wherein the tilting axis is parallel to and eccentric to the roller axis, wherein the stitching device further comprises a drive for driving the frame about the tilting axis in a sweeping-forward movement relative to the feeding direction.

2. A laminating arrangement according to claim 1, wherein the drive has an operating range which defines a starting position and an end position of the frame, wherein the pressure roller is displaced, when the frame is moved from the starting position to the end position, with a direction vector, which can be decomposed into a first component parallel to the feed direction and a second component perpendicular to the feed direction and to the tilt axis, wherein the first component is larger than the second component.

3. The laminating apparatus according to claim 2, wherein the frame is inclined in such a manner that the roller is located on an upstream side of the inclined axis in the feeding direction when the frame is located at the start position.

4. A laminating arrangement according to claim 3, characterised in that the tilting is performed in such a way that the roller axis is closer to the tilting axis when the frame is in the end position than in the starting position.

5. The laminating arrangement of claim 1, wherein the drive is coupled to the frame on one side of the tilt axis that is opposite the roller axis.

6. A laminating arrangement according to claim 1, characterised in that the drive is a linear drive.

7. A laminating arrangement according to claim 1, characterised in that the drive is a pneumatic cylinder.

8. A tire component supplying apparatus characterized by comprising the press-fitting apparatus according to claim 1.

9. The tire component serviser according to claim 8, further comprising a drum and a conveyor for feeding tire components in a feeding direction towards the drum.

10. A tyre component serviser according to claim 9, further comprising a cutting bar, wherein the pressure roller is arranged to move tangentially along the cutting bar during the forward sweeping movement of the frame relative to the feed direction.