Joint pressing roller, laminating mechanism and laminating method

Abstract

The present invention provides a joint pressing roller, a laminating mechanism, and a laminating method. The joint pressing roller is used to press the joint of the tread. The joint pressing roller includes a bracket, a rotating shaft, which is disposed on the bracket; a disc assembly, which is movably disposed relative to the rotating shaft and is used to press the joint of the tread; and an elastic assembly, which is disposed between the rotating shaft and the disc assembly and contacts the rotating shaft via the elastic assembly and moves relative to the rotating shaft. The joint pressing roller of the present invention solves the problem of loose lamination between the tread and the belt layer, or loose lamination between the joint of the tread and the belt layer, in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of tire manufacturing, and in particular to a joint pressing roller, a laminating mechanism and a laminating method. Background Art

[0002] When the tread feeder is being laminated, the feeder template conveys the tread material to the laminating drum. During lamination, the multi-piece joint pressing roller device presses the tread material onto the belt layer that has been laminated on the laminating drum. At the end of lamination, the multi-piece joint pressing roller has a certain pressing effect on the tread joint. However, since the disc of the multi-piece joint pressing roller is a flat roller, there are limitations on the movement of the tread with grooves on the surface. If the tread joint is not laminated well, problems such as the joint opening will occur at the joint after lamination or bubbles will appear at the tread joint after vulcanization. Summary of the Invention

[0003] The main purpose of the present invention is to provide a joint pressing roller, a laminating mechanism and a laminating method to solve the problem in the prior art that the tread and the belt layer are not tightly fitted or the joint of the tread and the belt layer are not tightly fitted.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a joint pressing roller is provided, which is used for pressing the joint of the tread. The joint pressing roller includes a bracket, a rotating shaft, and the rotating shaft is arranged on the bracket; a disc assembly, the disc assembly is movably arranged relative to the rotating shaft, and the disc assembly is used for pressing the joint of the tread; and an elastic component, the elastic component is arranged between the rotating shaft and the disc assembly, and the disc assembly contacts the rotating shaft through the elastic component and moves relative to the rotating shaft.

[0005] Furthermore, the disc assembly includes: a plurality of discs, which are sequentially sleeved on the rotating shaft along the axial direction of the rotating shaft so as to slide relative to the rotating shaft respectively.

[0006] Furthermore, the disc is an annular structure, and a pressing surface is provided on the outer edge of the disc, which is used to abut against the tread. The rotating shaft is passed through the inner side of the disc, and the disc slides relative to the rotating shaft through the inner hole.

[0007] Furthermore, the disc is an annular structure, and the pressing surface is an arc-shaped surface.

[0008] Furthermore, the elastic component is made of rubber or a spring.

[0009] According to the second aspect of the present invention, a bonding mechanism is provided, including a bonding pressure roller, which is used to press the tread onto the belt layer. The bonding mechanism also includes a joint pressure roller, which is used to press the joint of the tread, wherein the joint pressure roller is the above-mentioned joint pressure roller.

[0010] Furthermore, the bonding mechanism also includes: a bonding drum, on which a belt layer is wound; a driving device, which is drivably connected to a joint pressure roller to drive the joint pressure roller to press the joint of the tread onto the belt layer; a tread conveyor belt, which is used to convey the tread to the bonding drum; wherein, when the tread approaches the bonding drum, the bonding pressure roller approaches the bonding drum to press the tread onto the belt layer, and after the bonding pressure roller completes the pressing, the joint pressure roller presses the joint of the tread.

[0011] According to a third aspect of the present invention, a bonding method is provided for pressing a tread onto a belt layer, the bonding method comprising: step S1: moving the tread close to the belt layer until the tread contacts and bonds with the belt layer; step S2: pressing and bonding the joint at one end of the tread to the belt layer by a bonding roller; step S3: driving the belt layer and the tread to rotate synchronously with each other by a bonding drum along a first preset direction, so that the bonding roller continuously presses the tread onto the belt layer; step S4: pressing and bonding the joint position of the tread again by a joint pressure roller.

[0012] Furthermore, between step S3 and step S4, the bonding method includes: step S31: the bonding drum is reversed and rotated in the opposite direction to the first preset direction, so that the bonding roller bonds the tread and the belt layer again.

[0013] Furthermore, after step S4, the laminating method includes: step S31: reversing the laminating drum and rotating it in the opposite direction to the first preset direction, so that the laminating roller presses the tread and the belt layer again.

[0014] The joint pressing roller using the technical solution of the present invention is mainly used for pressing the tread during tire molding, and the joint pressing roller can be adjusted according to the flatness of the tread. Specifically, the joint pressing roller is wrapped with a layer of elastic component on the rotating shaft, and the elastic component can be extended and retracted. The disc component is sleeved on the outside of the elastic component, so that the disc component can be extended and retracted in the radial direction relative to the rotating shaft. When the joint pressing roller is in use, the disc component is directly pressed against the tread. When the tread has wrinkles or protrusions, the disc component will be subjected to a force toward the direction of the elastic component. At the same time, the elastic component will also apply an elastic restoring force to the disc assembly, which is applied to the tread through the disc assembly. At this time, other positions of the disc assembly will also be pressed against the tread. By setting the elastic component, it can be ensured that the disc assembly is completely pressed according to the height of the tread, avoiding the problem that the traditional joint pressing roller can only press the highest part of the protrusion when pressing uneven treads, but cannot press the lower protrusions or the place without protrusions and grooves. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 A schematic diagram showing an embodiment of a joint pressing roller according to the present invention; and

[0017] Figure 2 A schematic diagram showing an embodiment of the laminating roller of the laminating mechanism of the present invention in operation;

[0018] Figure 3 A schematic diagram showing an embodiment of the joint pressing roller of the laminating mechanism of the present invention when in operation.

[0019] The above drawings include the following reference numerals:

[0020] 10. Joint pressure roller; 11. Bracket; 12. Rotating shaft; 13. Elastic component; 14. Disc assembly; 20. Laminating drum; 30. Tread conveyor belt; 40. Driving device; 50. Laminating pressure roller. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to solve the problem in the prior art that the tread and the belt layer are not tightly fitted or the joint of the tread and the belt layer are not tightly fitted, the present invention provides a joint pressing roller 10, a fitting mechanism and a fitting method.

[0023] Please refer to Figure 1 and Figure 3 A joint pressing roller 10 includes a bracket 11, a rotating shaft 12, an elastic component 13 and a disc assembly 14. The joint pressing roller 10 is used to press the joint of the tread. The rotating shaft 12 is set on the bracket 11; the disc assembly 14 is movably set relative to the rotating shaft 12, and the disc assembly 14 is used to press the joint of the tread; the elastic component 13 is set between the rotating shaft 12 and the disc assembly 14, and the disc assembly 14 contacts the rotating shaft 12 through the elastic component 13 and moves relative to the rotating shaft 12.

[0024] The present invention provides a joint pressing roller 10, which is mainly used to press the tread during tire molding. In addition, the joint pressing roller can also press the rubber strip onto the tire or press other rubber materials. The joint pressing roller 10 can be adjusted according to the flatness of the tread. Specifically, when the disc assembly abuts against the tread, the tread gives the disc assembly a reaction force to push the disc assembly to move relative to the rotating shaft, and an elastic component 13 is provided between the rotating shaft 12 and the disc assembly, so that the disc assembly compresses the elastic component to move relative to the rotating shaft. When the joint pressing roller 10 is in use, the disc assembly 14 is directly in contact with the tread. When the tread has wrinkles or protrusions, the disc assembly 14 will be subjected to a force toward the elastic assembly 13. At the same time, the elastic assembly 13 will also apply an elastic restoring force to the disc assembly 14, which will be applied to the tread through the disc assembly 14. At this time, other positions of the disc assembly 14 will also fit with the tread. By setting the elastic assembly 13, it can be ensured that the disc assembly 14 is completely fitted according to the height of the tread, avoiding the problem that the traditional joint pressing roller 10 can only fit with the highest part of the protrusion when pressing the uneven tread, and cannot fit with the lower protrusion or the place without protrusions and grooves.

[0025] The disc assembly 14 includes a plurality of discs, which are sequentially sleeved on the elastic assembly 13 along the axial direction of the rotating shaft 12 so as to slide relative to the rotating shaft.

[0026] According to one embodiment, the disc assembly 14 uses multiple discs, and the size of the hole on the inner side of the disc is larger than the size of the rotating shaft, so that the disc can move relative to the rotating shaft, and the multiple discs are independently mounted on the rotating shaft 12 so as to correspond to different positions on the tread when in use. In this way, when there is a protrusion on the tread corresponding to one or several discs, the disc will retract and will not affect the combination of other discs with the tread; the disc is an annular structure, and the outer edge of the disc is provided with a pressing surface, which is used to abut against the tread to press the tread tightly on the belt layer.

[0027] According to another embodiment, the disc assembly 14 is an integral body and is made of elastic material, such as rubber or elastic cotton, etc. The disc is an annular structure, and the outer edge of the disc is a serrated structure.

[0028] The elastic component 13 includes a flexible sleeve, which is sleeved on the rotating shaft 12. The flexible sleeve has a hollow cavity therein, and the hollow cavity extends along the circumferential direction of the flexible sleeve.

[0029] In this embodiment, the flexible sleeve can be made of plastic, spring or rubber, and a gas or liquid with a certain pressure is introduced into the hollow cavity to ensure the elastic restoring force of the flexible sleeve.

[0030] The joint pressing roller 10 is also provided with an air pipe, which is connected to the hollow cavity of the flexible sleeve. The hollow cavity is a closed cavity, so that the pressure in the hollow cavity reaches a preset value by supplying gas into the hollow cavity.

[0031] The rotating shaft 12 is a square shaft. In this case, the inner hole of the flexible sleeve or disc is a square hole so as to rotate along with the square shaft.

[0032] The crimping surface is an arc-shaped surface, which is raised toward the bonding drum. In this way, the arc-shaped surface can apply greater force to the joint position after contacting the tread to promote the bonding between the tread and the belt layer.

[0033] The present invention also provides a laminating mechanism including a laminating roller 50, which is used to press the tread onto the belt layer. The laminating mechanism also includes a joint pressing roller 10, which is used to press the joint of the tread, wherein the joint pressing roller 10 is the above-mentioned joint pressing roller 10.

[0034] The laminating mechanism of the present invention adopts a two-step laminating method, firstly the entire tread is rolled by a laminating roller, and then the joint position of the tread is rolled by a joint roller, so that the tread and the belt layer are more tightly combined.

[0035] The bonding mechanism also includes a bonding drum 20, a driving device 40 and a tread conveyor belt 30, and the bonding drum 20 is wound with a belt layer; the driving device 40 is connected to the joint pressure roller 10 to drive the joint pressure roller 10 to press the joint of the tread onto the belt layer; the tread conveyor belt 30 is used to convey the tread to the bonding drum 20; wherein, when the tread approaches the bonding drum 20, the bonding roller 50 approaches the bonding drum 20 to press the tread onto the belt layer, and after the bonding roller 50 completes the pressing, the joint pressure roller 10 presses the joint of the tread.

[0036] According to a specific embodiment, the driving device 40 is a cylinder, which drives the joint pressure roller 10 to move closer to or away from the tread.

[0037] The tread conveyor belt 30 is used to guide the tread to the bonding drum 20 . The bonding drum 20 rotates to roll up the tread, and then the joint roller 10 presses the tread onto the belt layer on the bonding drum 20 .

[0038] There are a plurality of joint pressing rollers 10 , and the plurality of joint pressing rollers 10 are arranged at intervals along the circumferential direction of the laminating drum 20 .

[0039] A plurality of joint pressing rollers 10 are arranged in a row and are closely adjacent to each other. According to a specific embodiment, the driving device 40 includes a plurality of cylinders, and the plurality of cylinders are provided in a one-to-one correspondence with the plurality of joint pressing rollers 10 to simultaneously drive the plurality of joint pressing rollers 10 to move.

[0040] According to another specific embodiment, the laminating mechanism further includes a mounting plate, a plurality of joint pressing rollers 10 are arranged in a row on the mounting plate, and a driving device 40 is drivingly connected to the mounting plate to drive the plurality of joint pressing rollers 10 to move through the mounting plate.

[0041] In addition, the fitting mechanism of the present application further includes a controller, which adjusts the pressure of the gas or liquid input into the hollow cavity of the flexible sleeve.

[0042] The bonding method includes step S1: the tread moves close to the belt layer until the tread contacts and bonds with the belt layer; step S2: the joint at one end of the tread is pressed and bonded to the belt layer by a bonding roller 50; step S3: the bonding drum 20 drives the belt layer and the tread to rotate synchronously along a first preset direction so that the bonding roller 50 continuously presses the tread against the belt layer; and step S4: the joint position of the tread is pressed and bonded again by a joint pressure roller 10.

[0043] The bonding method of the present invention adopts a multiple bonding method to ensure that the tread and the belt layer can be tightly connected. During the bonding process, the entire tread is first rolled in a clockwise direction using a bonding roller. The bonding roller is rotatable to reduce the friction between the tread and the bonding roller during the rolling process. Then the bonding drum is reversed to allow the tread to rotate in a counterclockwise direction so that the bonding roller rolls it again. Finally, the joint roller is used to roll the joint position of the tread.

[0044] In addition, the bonding method can also be performed after executing step S3, first using a joint pressure roller to roll the tread joint position, then reversing the bonding drum so that the bonding pressure roller rolls the tread again, and then using the joint pressure roller to roll the joint position a second time.

[0045] The joint pressing roller 10 in the laminating method of the present invention uses the above-mentioned laminating mechanism to press the tread and the belt layer.

[0046] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0047] The present invention provides a joint pressing roller 10, which is mainly used to press the tread during tire molding. In addition, the joint pressing roller can also press the rubber strip onto the tire or press other rubber materials. The joint pressing roller 10 can be adjusted according to the flatness of the tread. Specifically, when the disc assembly abuts against the tread, the tread gives the disc assembly a reaction force to push the disc assembly to move relative to the rotating shaft, and an elastic component 13 is provided between the rotating shaft 12 and the disc assembly, so that the disc assembly compresses the elastic component to move relative to the rotating shaft. When the joint pressing roller 10 is in use, the disc assembly 14 is directly in contact with the tread. When the tread has wrinkles or protrusions, the disc assembly 14 will be subjected to a force toward the elastic assembly 13. At the same time, the elastic assembly 13 will also apply an elastic restoring force to the disc assembly 14, which will be applied to the tread through the disc assembly 14. At this time, other positions of the disc assembly 14 will also fit with the tread. By setting the elastic assembly 13, it can be ensured that the disc assembly 14 is completely fitted according to the height of the tread, avoiding the problem that the traditional joint pressing roller 10 can only fit with the highest part of the protrusion when pressing the uneven tread, and cannot fit with the lower protrusion or the place without protrusions and grooves.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0049] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorized specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0050] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0051] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0052] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0053] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A laminating method, using a laminating mechanism to press a tread onto a belt layer, characterized in that: The fitting mechanism includes: A laminating roller (50), the laminating roller (50) is used to press the tread onto the belt layer, characterized in that the laminating mechanism further includes a joint pressing roller (10) and a laminating drum (20), the belt layer is wound on the laminating drum (20), and the joint pressing roller (10) is used to press the joint of the tread, wherein when the tread approaches the laminating drum (20), the laminating roller (50) approaches the laminating drum (20) to press the tread onto the belt layer, and after the laminating roller (50) completes the pressing, the joint pressing roller (10) presses the joint of the tread; A driving device (40), the driving device (40) being drivingly connected to the joint pressing roller (10) to drive the joint pressing roller (10) to press the joint of the tread onto the belt layer; a tread conveyor belt (30), the tread conveyor belt (30) being used to convey the tread to the laminating drum (20); The joint pressing roller comprises: Bracket (11); A rotating shaft (12), the rotating shaft (12) being arranged on the bracket (11); a disc assembly (14), the disc assembly (14) being movably arranged relative to the rotating shaft (12), and the disc assembly (14) being used for pressing a joint of the tread; an elastic component (13), the elastic component (13) being arranged between the rotating shaft (12) and the disc component (14), the disc component (14) being in contact with the rotating shaft (12) through the elastic component (13) and moving relative to the rotating shaft (12); The elastic component (13) includes a flexible sleeve, the flexible sleeve is sleeved on the rotating shaft (12), a hollow cavity is provided in the flexible sleeve, the hollow cavity extends along the circumferential direction of the flexible sleeve, and gas or liquid is introduced into the hollow cavity to ensure the elastic restoring force of the flexible sleeve; The bonding method includes: Step S1: the tread moves close to the belt layer until the tread contacts and fits with the belt layer; Step S2: Using a laminating roller (50) to press the joint at one end of the tread tightly onto the belt layer; Step S3: the laminating drum (20) drives the belt layer and the tread to rotate synchronously along a first preset direction, so that the laminating roller (50) continuously presses the tread onto the belt layer, wherein the first preset direction is the circumferential direction of the laminating drum (20); Step S4: The joint position of the tread is pressed and bonded again by a joint pressing roller (10).

2. The laminating method according to claim 1, wherein: Between step S3 and step S4, the bonding method includes: Step S31: the laminating drum (20) is reversed and rotated in the opposite direction to the first preset direction, so that the laminating roller (50) presses the tread and the belt layer again.

3. The laminating method according to claim 1, wherein: After step S4, the bonding method includes: Step S31: the laminating drum (20) is reversed and rotated in the opposite direction to the first preset direction, so that the laminating roller (50) presses the tread and the belt layer again.

4. The laminating method according to claim 1, wherein: The disc assembly (14) comprises: A plurality of discs are sequentially sleeved on the rotating shaft (12) along the axial direction of the rotating shaft (12) so as to slide relative to the rotating shaft (12) respectively.

5. The laminating method according to claim 4, characterized in that: The disc is an annular structure, and a pressing surface is provided on the outer edge of the disc, and the pressing surface is used to abut against the tread. The rotating shaft (12) is passed through the inner side of the disc, and the disc slides relative to the rotating shaft (12) through the inner hole.

6. The laminating method according to claim 5, characterized in that: The disc is an annular structure, and the pressing surface is an arc-shaped surface.

7. The laminating method according to claim 1, wherein: The elastic component (13) is made of rubber or a spring.

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