CN114919215A

CN114919215A - Turn-up mechanism, mechanical drum and tire forming method

Info

Publication number: CN114919215A
Application number: CN202210688825.1A
Authority: CN
Inventors: 谢小红; 俞一航; 李兴瑞; 黄彬; 王艺
Original assignee: Mesnac Co Ltd; Qingdao Mesnac Electromechanical Engineering Co Ltd
Current assignee: Mesnac Co Ltd; Qingdao Mesnac Electromechanical Engineering Co Ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-08-19
Also published as: WO2023241709A1

Abstract

The invention provides a turn-up mechanism, a mechanical drum and a tire molding method, wherein the turn-up mechanism is arranged on a main shaft assembly and comprises a plurality of first turn-up structures which are arranged around the circumference of the main shaft assembly, and the first turn-up structures comprise: the compression roller assembly is used for rolling the tire side of the tire; the first driving rod assembly is in driving connection with the pressing roller assembly, and the first driving assembly is connected with the first driving rod assembly so as to drive the pressing roller assembly to move along the radial direction of the tire through the first driving rod assembly; the supporting assembly is connected with the first driving rod assembly to support the tire side outside the turn-up mechanism; and the capsule is arranged on the support component so as to bulge towards the outer side of the turn-up mechanism and support the tire side in an inflated state. The turn-up mechanism solves the problems of unstable tire manufacturing quality and long time in the prior art.

Description

Turn-up mechanism, mechanical drum and tire forming method

Technical Field

The invention relates to the technical field of rubber tires, in particular to a turn-up mechanism, a mechanical drum and a tire forming method.

Background

The existing tire is mainly divided into a mechanical drum and a bladder drum according to the attaching mode to the tire side wall when in turn-up molding, the existing turn-up operation generally adopts the bladder drum to turn up the tire side wall of the tire, the side wall is attached to the tire blank through the inflation and expansion of the bladder, so that the problem of indentation on the tire side surface can be avoided, but the bladder drum has the problems of complex capsule replacement, high bladder cost and poor tire bead molding quality compared with the mechanical drum, so that the defective rate of the tire is high, and the cost is high.

Although the mechanical drum is low in cost, when the tire side is rolled, the rolling pressure is high, indentations are easy to remain, or the rolling pressure is low, so that the tire side is not tightly attached, the quality of the tire is difficult to guarantee, the mechanical drum is time-consuming and long in tire rolling, large-scale production is not facilitated, and the mechanical drum is low in cost but is rarely applied compared with a capsule drum.

Disclosure of Invention

The invention mainly aims to provide a turn-up mechanism, a mechanical drum and a tire forming method, and aims to solve the problems of unstable tire manufacturing quality and long time in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a turn-up mechanism provided on a spindle assembly, the turn-up mechanism including a plurality of first turn-up structures provided around a circumference of the spindle assembly, the first turn-up structures including: the compression roller assembly is used for rolling the tire side of the tire; the first driving rod assembly is in driving connection with the pressing roller assembly, and the first driving assembly is connected with the first driving rod assembly so as to drive the pressing roller assembly to move along the radial direction of the tire through the first driving rod assembly; the supporting assembly is connected with the first driving rod assembly to support the tire side outside the turn-up mechanism; and the capsule is arranged on the support component so as to bulge towards the outer side of the turn-up mechanism and support the tire side in an inflated state.

Further, the bladder is laid on the support member at an outer end in the radial direction of the tire to form a hemispherical structure in an inflated state.

Further, the turn-up mechanism also comprises: the second driving rod component is rotationally connected with the first driving rod component, and the second driving component is in driving connection with the second driving rod component so as to drive the pressing roller component to press the tire through the first driving rod component.

Further, the first drive rod assembly includes: one end of the fourth driving rod is connected with the first driving component; the first driving rod is rotationally connected with the other end of the fourth driving rod; and one end of the third driving rod is rotatably connected with one end of the supporting assembly, which is far away from the compression roller assembly, and the other end of the third driving rod is also rotatably connected with a fourth driving rod, wherein the fourth driving rod, the first driving rod supporting assembly and the third driving rod are sequentially connected to form a four-bar mechanism.

According to another aspect of the present invention, there is provided a mechanical drum, comprising a spindle assembly and an anti-wrapping mechanism, the anti-wrapping mechanism is disposed on the spindle assembly to bond the sidewall of the tire to the blank of the tire, the anti-wrapping mechanism is the above-mentioned anti-wrapping mechanism, wherein the mechanical drum further comprises a bonding mechanism movably disposed on one side of the spindle assembly to bond the apex and/or the sidewall to the blank of the tire.

Further, turn over a packet mechanism and laminating mechanism and roll extrusion laminating to the tire side wall respectively, wherein, turn over a packet mechanism cover and establish on main shaft assembly, and laminating mechanism sets up the one side at main shaft assembly.

According to another aspect of the present invention, there is provided a tire building method for building a tire using the above mechanical drum, the tire building method comprising:

step S10: inflating the capsule in the turn-up mechanism to enable the capsule to bulge towards the outer side of the turn-up mechanism and support the tire side;

step S20: and in the radial direction of the tire, driving a first turn-up structure in the turn-up mechanism to move from inside to outside so as to roll the tire side.

Further, the tire building method further includes: step S11: rolling the apex by the fitting mechanism to fit the apex on the blank of the tire, wherein step S10 is performed simultaneously with or during the rolling of the apex.

Further, after the bladder is inflated, the press roller assembly of the first turn-up structure is driven to roll the tire side from inside to outside along the radial direction of the tire.

Further, the tire building method further includes step S21, step S21, performed after step S20 or simultaneously with step S20: in the radial direction of the tire, the fitting mechanism is driven to move from inside to outside to roll the sidewall.

Further, the tire building method further includes step S23, step S23, performed simultaneously with step S20: and exhausting air to the capsule.

By applying the turn-up mechanism in the technical scheme, in order to shorten the time of rolling the side wall by the compression roller assembly, the supporting assembly is connected with the first driving rod assembly so as to support the side wall on the outer side of the turn-up mechanism; the support component is perpendicular to the tire side of the tire or one end far away from the tire forms an angle inclined towards the outer side of the tire after rising, the bladder is arranged on the support component to bulge towards the outer side of the turn-up mechanism and support the tire side in an inflated state, through pre-supporting the tire side before rolling, not only is the rolling time of a subsequent press roller component saved, but also the tire side pressed by a roller on the press roller component can be effectively prevented from being stuck on a tire blank, and the tire side part far away from the roller on the press roller component forms a groove due to retraction of rubber materials after a turn-up of the tire side, and a part close to the tire after the turn-up of the tire side forms a pit when a subsequent suspension arm presses, so that the pit is likely to be folded, therefore, the roller on the press roller component is arranged at one end of the tire side, so that the press roller component and the support component are consistent with the center of the tire along the radial direction of the tire, and the subsequent suspension arm can continue rolling at the rolling position of the compression roller assembly during rolling, so that the sidewall cannot be pressed into wrinkles.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

figure 1 shows a schematic structural view of an embodiment of a mechanical drum according to the invention; and

fig. 2 shows a partial schematic structural view of an embodiment of the anti-wrap mechanism of the present invention.

Wherein the figures include the following reference numerals:

10. a spindle assembly; 20. a first anti-wrap structure; 201. a press roll assembly; 21. a first drive rod assembly; 211. a first drive assembly; 22. a second drive rod assembly; 221. a second drive assembly; 23. a third drive lever; 24. a fourth drive lever; 25. a support assembly; 40. a lock ring structure; 50. a sidewall; 60. a capsule; 70. and a fitting mechanism.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to solve the problems of high manufacturing cost and unstable quality of tires in the prior art, the invention provides an anti-package mechanism, a mechanical drum and a tire forming method.

Referring to fig. 1 to 2, the turn-up mechanism of the present invention is disposed on the spindle assembly 10, and is mainly used for turning up a tire blank after a tire bead is mounted, so as to attach a tire side 50 to a side surface of the tire blank, the turn-up of the bladder 60 is replaced by using a mechanical drum, and the turn-up mechanism has better stability by improving the turn-up structure of the mechanical drum, so as to attach the tire side 50 to the tire blank with high quality, greatly shorten the turn-up time of the tire, and improve the production efficiency, and specifically, the turn-up mechanism is configured as follows:

the turn-up mechanism comprises a plurality of first turn-up structures 20, wherein the first turn-up structures 20 are arranged around the circumference of a spindle assembly, each first turn-up structure 20 comprises a press roller assembly 201, a first driving rod assembly, a first driving assembly 211, a supporting assembly 25 and a capsule 60, and the press roller assembly 201 is used for rolling the side wall 50 of the tire; the press roller assembly 201 is used for directly abutting against the sidewall 50 to roll the sidewall 50 of the tire, so as to press the sidewall 50 on the green tire; the first driving rod 21 is drivingly connected to the roller assembly 201, and the first driving assembly 211 is connected to the first driving rod 21 to move the roller assembly 201 in the radial direction of the tire by driving the first driving rod 21 to swing.

In order to shorten the time for the press roller assembly 201 to roll the sidewall 50, the support assembly 25 is connected with a first drive rod assembly to support the sidewall 50 outside the turnup mechanism; the supporting component 25 is perpendicular to the side wall 50 of the tire or the end far away from the tire forms an angle inclined towards the outer side of the tire after being lifted, the bladder 60 is arranged on the supporting component 25 to bulge towards the outer side of the turn-up mechanism and support the side wall 50 in an inflated state, through pre-supporting the side wall 50 before rolling, not only is the rolling time of the subsequent press roller component 201 saved, but also the situation that the side wall 50 pressed by the rollers on the press roller component 201 is stuck on the blank tire can be effectively avoided, and the part of the side wall 50 far away from the rollers on the press roller component 201 is formed into a groove after the side wall 50 is turned up and is close to the tire due to retraction of the rubber material after the turn-up rod falls back, and the subsequent suspension arm is likely to wrinkle when pressing the pit, therefore, the roller on the press roller component 201 is arranged at the end of the side wall 50 of the supporting component 25, so that the press roller component 201 and the supporting component 25 are consistent with the center of the tire along the radial direction of the tire, the subsequent suspension arm continues to roll at the position where the pressing roller assembly 201 rolls when rolling, and cannot press the sidewall 50 into wrinkles.

The first driving assembly 211 and the second driving assembly 221 are driven by air cylinders.

The bladder 60 is laid on the support component 25 and located at one end of the outer side of the tire in the radial direction, the bladder 60 is adhered on the support component 25, wherein the bladder 60 bulges towards the outer side of the turn-up mechanism to form a hemispherical structure in an inflated state, one side surface of the bladder 60 is adhered on the outer side surface of the support component 25 when the bladder 60 is arranged, and the rest part of the bladder bulges up to support the tire side 50 in the inflated state. In addition, the capsule 60 may be fixed to the support rods of the support assembly 25 by screws or pins as needed.

The turn-up mechanism further comprises a second drive rod assembly 22 and a second drive assembly 221, the second drive rod assembly 22 being rotatably connected to the first drive rod assembly, the second drive assembly 221 being drivingly connected to the second drive rod assembly 22 for pressing the tire by the first drive rod assembly drive press roller assembly 201.

The first driving rod assembly comprises a fourth driving rod 24, a first driving rod 21 and a third driving rod 23, and one end of the fourth driving rod 24 is connected with the first driving assembly 211; the first driving rod 21 is rotatably connected with the other end of the fourth driving rod 24; one end of the third driving rod 23 is rotatably connected with one end of the supporting component 25 far away from the pressing roller component 201, and the other end of the third driving rod 23 is further rotatably connected with the fourth driving rod 24, wherein the fourth driving rod 24, the first driving rod 21, the supporting component 25 and the third driving rod 23 are sequentially connected to form a four-bar mechanism.

The second drive rod assembly 22 can be connected to the first drive rod assembly in a variety of ways, including: the second drive rod assembly 22 is rotationally connected to the first drive rod 21 or the second drive rod assembly 22 is rotationally connected to the third drive rod 23.

The structure that the first driving rod assembly and the second driving rod assembly 22 drive the press roll assembly 201 together reduces a force transmission path, reduces force loss, and improves force transmission efficiency, so that the sidewall 50 is attached more stably.

The invention also provides a mechanical drum which comprises a main shaft assembly and an anti-wrapping mechanism, wherein the anti-wrapping mechanism is arranged on the main shaft assembly to attach the tire side 50 of the tire to the tire blank of the tire, the anti-wrapping mechanism is the anti-wrapping mechanism, the mechanical drum further comprises an attaching mechanism 70, the attaching mechanism 70 is movably arranged on one side of the main shaft assembly to attach the apex and/or the tire side 50 to the tire blank of the tire, and the attaching mechanism 70 can attach the apex alone, can attach the tire side 50 alone, and can be used for attaching the apex and the tire side 50.

The turn-up mechanism further comprises a plurality of second turn-up structures, the second turn-up structures and the first turn-up structures 20 are arranged in a one-to-one correspondence mode and are symmetrical to each other, and the tire side 50 is attached to the tire blank by rolling the tire side 50 on two sides of the tire blank respectively and simultaneously.

When laminating mechanism 70 laminating side wall 50, turn over package mechanism and laminating mechanism 70 carry out the roll extrusion laminating to tire side wall 50 respectively, and wherein, turn over package mechanism cover is established on main shaft assembly, is subject to the volume of turning over the package structure, and turn over package mechanism only rolls the side wall 50 near tire center one end, and laminating mechanism 70 sets up in one side of main shaft assembly to roll extrusion to whole side wall 50.

In addition, the mechanical drum of the invention further comprises two locking ring structures 40, wherein the two locking ring structures 40 are symmetrically arranged on the main shaft assembly and are positioned between the two turnup mechanisms for locking the tire bead of the tire so as to fix the tire blank.

The invention also provides a tire forming method, which adopts the mechanical drum to form a tire, and the tire forming method comprises the following steps of S10: inflating the bladder 60 inside the turn-up mechanism so that the bladder 60 bulges towards the outside of the turn-up mechanism and supports the sidewalls 50; step S20: in the radial direction of the tire, the first turnup structure 20 in the turnup mechanism is driven from inside to outside to roll the sidewall 50.

The tire building method further includes step S11: the bead filler is rolled by the applying mechanism 70 to apply the bead filler to the green tire of the tire, and in order to save the molding time, the applying mechanism 70 of the machine drum performs the step S10 while or during the rolling of the bead filler. The tire building method further includes step S23, step S23, performed simultaneously with step S20: venting the capsule 60.

The tire building process of the present invention is as follows:

firstly, the laminating mechanism 70 rolls the apex, in the process of rolling the apex, the bladder 60 is inflated to prop up the sidewall 50, after the rolling of the apex is finished, the press roller assembly 201 of the first turn-up structure 20 is driven to roll the sidewall 50 from inside to outside along the radial direction of the tire, the bladder 60 is located outside the first turn-up structure 20, when the press roller assembly 201 rises, the bladder 60 is deflated, the turn-up mechanism presses the sidewall 50 onto the tire blank in the moving process, after the press roller assembly 201 rises to a preset position, the reverse movement is started, namely, the radial direction of the tire is moved from outside to inside, after the rolling of the press roller assembly 201 is finished, the laminating mechanism 70 starts from the innermost side of the tire blank, the rolled sidewall 50 is moved from inside to outside, and finally the sidewall 50 is laminated onto the tire blank.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A turn-up mechanism provided on a spindle assembly (10), the turn-up mechanism comprising a plurality of first turn-up structures (20), the plurality of first turn-up structures (20) being arranged around a circumference of the spindle assembly (10), characterized in that the first turn-up structures (20) comprise:

a roller assembly (201), wherein the roller assembly (201) is used for rolling the sidewall (50) of the tire;

a first driving rod assembly and a first driving assembly (21), wherein the first driving rod assembly is in driving connection with the pressure roller assembly (201), and the first driving assembly (21) is connected with the first driving rod assembly so as to drive the pressure roller assembly (201) to move along the radial direction of the tire through the first driving rod assembly;

a support assembly (25), said support assembly (25) being connected to said first drive rod assembly to support a sidewall (50) outside of said turnup mechanism;

a bladder (60) disposed on the support assembly (25) to bulge toward an outer side of the turn-up mechanism and support the sidewall (50) in an inflated state.

2. Turn-up mechanism according to claim 1, wherein the bladder (60) is laid on the support member (25) at an outer end in the tire radial direction to form a hemispherical structure in an inflated state.

3. The anti-wrap mechanism of claim 1, further comprising:

the second driving rod assembly (22) is in rotary connection with the first driving rod assembly, and the second driving assembly (221) is in driving connection with the second driving rod assembly (22) so as to drive the pressing roller assembly (201) to press the tire through the first driving rod assembly.

4. The anti-tipping mechanism of claim 1, wherein the first drive rod assembly comprises:

a fourth driving rod (24), wherein one end of the fourth driving rod (24) is connected with the first driving component (211);

the first driving rod (21), the other end of the first driving rod (21) and the fourth driving rod (24) are connected in a rotating mode;

third actuating lever (23), the one end of third actuating lever (23) with supporting component (25) are kept away from the one end of compression roller subassembly (201) is rotated and is connected, the other end of third actuating lever (23) still with fourth actuating lever (24) are rotated and are connected, wherein, fourth actuating lever (24) first actuating lever (21) supporting component (25) with third actuating lever (23) are connected in order and are formed four-bar linkage.

5. A machine drum comprising a spindle assembly (10) and a turn-up mechanism arranged on said spindle assembly (10) to apply a sidewall of a tyre to a blank of the tyre, characterized in that said turn-up mechanism is as claimed in any one of claims 1 to 4, wherein said machine drum further comprises:

an applying mechanism (70), wherein the applying mechanism (70) is movably arranged at one side of the spindle assembly (10) so as to apply the triangular glue and/or the side wall (50) on the green tyre of the tyre.

6. The machine drum of claim 5, wherein said turn-up mechanism and said attaching mechanism (70) are respectively roll-attached to said tire sidewall, wherein said turn-up mechanism is sleeved on said spindle assembly (10), and said attaching mechanism (70) is disposed on one side of said spindle assembly (10).

7. A method of building a tire using the mechanical drum of claim 5 or 6, the method comprising:

step S10: inflating the bladder (60) inside the turn-up mechanism so as to cause the bladder (60) to bulge towards the outside of the turn-up mechanism and support the sidewalls (50);

step S20: driving a first turn-up structure (20) in the turn-up mechanism to move from inside to outside in the radial direction of the tire to roll the tire side wall (50).

8. The tire building method according to claim 7, further comprising:

step S11: rolling the apex by the bonding mechanism (70) to bond the apex to the blank of the tire, wherein the step S10 is performed while or during rolling of the apex.

9. A tyre building method according to claim 7, characterized in that after the bladder (60) is completely inflated, the roller assembly (201) of the first turnup structure (20) is driven to roll the sidewall from inside to outside in the radial direction of the tyre.

10. The tire building method according to claim 7, further comprising a step S23 performed simultaneously with the step S20,

step S23: venting the capsule (60).