Reverse packaging forming method, reverse packaging forming equipment and three-drum forming machine

Abstract

The present invention provides a reverse packaging molding method, reverse packaging molding equipment and a three-drum molding machine. The reverse packaging molding method includes the following steps: step S1, controlling the inflation of the reverse packaging capsule to make the first part of the sidewall structure fit on the tire body; controlling the molding drum to drive the sidewall structure to rotate; step S2, controlling the exhaust of the reverse packaging capsule to form a reverse packaging gap between the second part of the sidewall structure that is not fitted on the tire body and the reverse packaging capsule; step S3, controlling the reverse packaging pressure roller to extend from the reverse packaging gap and roll the second part of the sidewall structure onto the tire body. The technical solution of the present invention solves the problem of the long reverse packaging time of the reverse packaging molding method in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of tire manufacturing, and in particular to a turn-up molding method, turn-up molding equipment and a three-drum molding machine. Background Art

[0002] In the related technology, one turn-up forming method uses a mechanical drum to turn up the sidewall structure on the tire body, which will leave indentations on the sidewall structure and affect the uniformity of the tire cord arrangement, thereby affecting the quality of the tire; another turn-up forming method uses a turn-up capsule and a booster capsule in combination, and controls the turn-up capsule and the booster capsule to be inflated so that the sidewall structure is completely attached to the tire body. The diameter of the inflation capsule is large, resulting in a relatively short life of the inflation capsule and a long inflation time.

[0003] In addition, both of the above-mentioned two wrapping forming methods require the sidewall structure on the tire body to be rolled separately, resulting in a long wrapping time. Summary of the invention

[0004] The main purpose of the present invention is to provide a reverse packaging forming method, reverse packaging forming equipment and a three-drum forming machine to solve the problem of long reverse packaging time in the reverse packaging forming method in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a turn-up forming method is provided, comprising the following steps: step S1, controlling the inflation of the turn-up capsule to make the first part of the sidewall structure fit on the tire body; controlling the forming drum to drive the sidewall structure to rotate; step S2, controlling the exhaust of the turn-up capsule to form a turn-up gap between the second part of the sidewall structure not fitted on the tire body and the turn-up capsule; step S3, controlling the turn-up pressing roller to extend from the turn-up gap and roll the second part of the sidewall structure onto the tire body.

[0006] Further, step S3 includes: controlling the turn-up pressing roller to extend from the turn-up gap and make the turn-up pressing roller abut against the sidewall structure, controlling the turn-up pressing roller to move along the radial direction of the tire body toward the side away from the forming drum, and rolling the second part of the sidewall structure onto the tire body.

[0007] Furthermore, while controlling the turn-up roller to move radially of the tire body toward the side away from the forming drum, the turn-up roller is controlled to move axially of the tire body toward the side close to the tire body to roll the second part of the sidewall structure onto the arc-shaped tire body.

[0008] Furthermore, while controlling the turn-up pressing roller to move in the radial direction of the tire body toward the side away from the forming drum, the turn-up pressing roller is controlled to rotate and be perpendicular to the tire body arranged in an arc shape.

[0009] Furthermore, two turn-up capsules located on both sides of the tire body are controlled to be inflated at the same time, so that the two sidewall structures located on both sides of the tire body are attached to the tire body; the forming drum is controlled to drive the two sidewall structures to rotate synchronously; the two turn-up capsules are controlled to be exhausted at the same time, so that two turn-up gaps are formed between the two turn-up capsules and the two sidewall structures; the two turn-up pressing rollers are controlled to extend into the two turn-up gaps synchronously, and the two sidewall structures are rolled onto the tire body at the same time.

[0010] According to another aspect of the present invention, a turn-up molding device is provided, which includes: a molding drum, on which a tire body and a sidewall structure are sleeved, and the molding drum rotates to drive the tire body and the sidewall structure to rotate; a turn-up capsule, which is connected to the molding drum, and has an inflated state for fitting a first portion of the sidewall structure to the tire body; wherein, when the turn-up capsule is exhausted, a turn-up gap is formed between the turn-up capsule and a second portion of the sidewall structure that is not fitted to the tire body; and a pressure roller assembly, which includes a turn-up pressure roller, which is movably arranged relative to the molding drum so that the turn-up pressure roller extends from the turn-up gap and rolls the second portion of the sidewall structure onto the tire body.

[0011] Furthermore, along the radial direction of the tire body, the height of the inverted capsule on one side of the building drum is H1, and the height of the tire body on one side of the building drum is H2, and H1 / H2=1 / 4-1 / 2.

[0012] Furthermore, the pressure roller assembly also includes: a bracket, which is movably arranged along the radial direction of the tire body; a cylinder, which is arranged on the bracket, and the output shaft of the cylinder is connected to the turn-up pressure roller, so that the turn-up pressure roller can be movably arranged along the axial direction of the tire body through the cylinder.

[0013] Furthermore, the cylinder is rotatably arranged relative to the bracket; the pressure roller assembly also includes: a mounting plate, the bracket is arranged on the mounting plate; a servo motor, the servo motor is arranged on the mounting plate and is spaced apart from the bracket; a steering box, the steering box is arranged on the mounting plate, the input shaft of the steering box is connected to the output shaft of the servo motor through a rotating shaft; the output shaft of the steering box is connected to the cylinder body of the cylinder, and the output shaft of the steering box is perpendicular to the input shaft of the steering box, so that the servo motor drives the cylinder body through the rotating shaft to drive the reverse pressure roller to rotate relative to the bracket.

[0014] According to another aspect of the present invention, a three-drum forming machine is provided. The three-drum forming machine includes a reverse wrapping forming device, and the reverse wrapping forming device is the reverse wrapping forming device mentioned above.

[0015] By applying the technical solution of the present invention, the first part of the sidewall structure is first adhered to the tire body using the turn-up capsule, and then the forming drum is controlled to drive the sidewall structure to rotate, and the turn-up capsule is controlled to exhaust. Under the action of centrifugal force, the second part of the sidewall structure that is not adhered to the tire body will form a turn-up gap with the turn-up capsule; the turn-up pressing roller is controlled to extend into the turn-up gap and roll the second part of the sidewall structure onto the tire body. In this way, the rotational pull turn-up is achieved by utilizing the cooperation of the turn-up capsule, the forming drum and the turn-up pressure roller. There is no need to re-roll the sidewall structure after the turn-up capsule is turned up, which is beneficial to shortening the turn-up time and improving the turn-up efficiency. At the same time, in the present application, the turn-up capsule only needs to make the first part of the sidewall structure fit on the tire body, thereby reducing the diameter of the turn-up capsule and shortening the inflation time of the turn-up capsule, which is beneficial to further shortening the turn-up time and improving the turn-up efficiency. In addition, in the present application, the turn-up pressure roller is used to roll the second part of the sidewall structure directly on the tire body, which can avoid the generation of bubbles between the sidewall structure and the tire body, and the turn-up quality is better, which is beneficial to improving the tire production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 It shows a schematic structural diagram of a turn-up forming device in one state according to an optional embodiment of the present invention;

[0018] Figure 2 Shows Figure 1 A schematic diagram of the structure of the reverse package forming device in another state;

[0019] Figure 3 Shows Figure 1 A schematic diagram of the structure of the reverse package forming device in another state;

[0020] Figure 4 Shows Figure 1 Schematic diagram of the structure of the pressure roller assembly of the anti-packaging forming equipment.

[0021] The above drawings include the following reference numerals:

[0022] 1. Sidewall structure; 2. Tire body; 100. Turn-up gap; 10. Turn-up capsule; 20. Building drum; 21. Flange; 30. Pressing roller assembly; 31. Turn-up pressing roller; 32. Bracket; 33. Cylinder; 34. Servo motor; 35. Steering box; 36. Rotating shaft. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In order to solve the problem of long reverse wrapping time in the reverse wrapping forming method in the prior art, the present invention provides a reverse wrapping forming method, reverse wrapping forming equipment and a three-drum forming machine.

[0025] The present application provides a turn-up molding method, comprising the following steps: step S1, controlling the inflation of the turn-up capsule 10 to make the first part of the sidewall structure 1 fit on the tire body 2; controlling the molding drum 20 to drive the sidewall structure 1 to rotate; step S2, controlling the exhaust of the turn-up capsule 10 to form a turn-up gap 100 between the second part of the sidewall structure 1 that is not fitted on the tire body 2 and the turn-up capsule 10; step S3, controlling the turn-up pressing roller 31 to extend into the turn-up gap 100 and roll the second part of the sidewall structure 1 onto the tire body 2.

[0026] In this embodiment, if Figure 1 As shown, the first part of the sidewall structure 1 is first attached to the tire body 2 using the turn-up capsule 10, and then the forming drum 20 is controlled to drive the sidewall structure 1 to rotate, and the turn-up capsule 10 is controlled to exhaust. Under the action of centrifugal force, the second part of the sidewall structure 1 that is not attached to the tire body 2 will form a turn-up gap 100 with the turn-up capsule 10; Figure 2 As shown, the turn-up roller 31 is controlled to extend from the turn-up gap 100 and roll the second portion of the sidewall structure 1 onto the tire body 2; Figure 3 As shown, the turn-up roller 31 rolls the second part of the sidewall structure 1 onto the tire body 2. In this way, the turn-up capsule 10, the forming drum 20 and the turn-up roller 31 cooperate to realize the rotation and pulling turn-up, and there is no need to roll the sidewall structure 1 again after the turn-up capsule 10 is turned up, which is conducive to shortening the turn-up time and improving the turn-up efficiency; at the same time, in this embodiment, the turn-up capsule 10 only needs to make the first part of the sidewall structure 1 fit on the tire body 2, so that the diameter of the turn-up capsule 10 after inflation can be reduced, and the inflation time of the turn-up capsule 10 can be shortened, which is conducive to further shortening the turn-up time and improving the turn-up efficiency; in addition, in this application, the turn-up roller 31 is used to roll the second part of the sidewall structure 1 directly onto the tire body 2, which can avoid the generation of bubbles between the sidewall structure 1 and the tire body 2, and the turn-up quality is better, which is conducive to improving the tire production quality.

[0027] Optionally, step S3 includes: controlling the turn-up pressing roller 31 to extend from the turn-up gap 100 and make the turn-up pressing roller 31 abut against the sidewall structure 1, controlling the turn-up pressing roller 31 to move along the radial direction of the tire body 2 toward the side away from the forming drum 20, and rolling the second part of the sidewall structure 1 onto the tire body 2. In this way, by controlling the turn-up pressing roller 31 to retreat relative to the tire body 2, the second part of the sidewall structure 1 is rolled onto the tire body 2, ensuring that the turn-up pressing roller 31 is always abutted against the sidewall structure 1, so that the sidewall structure 1 can be pressed onto the tire body 2, and bubbles are avoided between the sidewall structure 1 and the tire body 2.

[0028] In specific implementation, the turn-up capsule 10 is controlled to vent for a predetermined time, so that the turn-up gap 100 is large enough to allow the turn-up pressure roller 31 to extend therein, and after ensuring that the sidewall structure 1 and the turn-up capsule 10 do not interfere with the turn-up pressure roller 31, the turn-up pressure roller 31 is controlled to extend therein through the turn-up gap 100.

[0029] Optionally, while controlling the turn-up pressing roller 31 to move along the radial direction of the tire body 2 toward the side away from the forming drum 20, the turn-up pressing roller 31 is controlled to move along the axial direction of the tire body 2 toward the side close to the tire body 2, so as to roll the second part of the sidewall structure 1 onto the tire body 2 arranged in an arc shape. In this way, the turn-up forming method provided by the present application can be applied to the tire body 2 arranged in an arc shape, ensuring that the turn-up pressing roller 31 is always in contact with the sidewall structure 1, and avoiding the generation of bubbles between the sidewall structure 1 and the tire body 2.

[0030] Optionally, while controlling the turn-up pressing roller 31 to move in the radial direction of the tire body 2 toward the side away from the forming drum 20, the turn-up pressing roller 31 is controlled to rotate and be perpendicular to the arc-shaped tire body 2. In this way, the rolling effect of the turn-up pressing roller 31 can be improved.

[0031] Optionally, the two turn-up capsules 10 located on both sides of the tire body 2 are inflated at the same time, so that the two sidewall structures 1 located on both sides of the tire body 2 are attached to the tire body 2; the forming drum 20 is controlled to drive the two sidewall structures 1 to rotate synchronously; the two turn-up capsules 10 are controlled to be exhausted at the same time, so that two turn-up gaps 100 are formed between the two turn-up capsules 10 and the two sidewall structures 1; the two turn-up pressing rollers 31 are controlled to extend into the two turn-up gaps 100 synchronously, so that the two sidewall structures 1 are rolled onto the tire body 2 at the same time. In this way, the turn-up efficiency is further improved and the turn-up time is saved.

[0032] The reverse packing forming method further comprises step S4, controlling the forming drum 20 to stop rotating, and completing the reverse packing operation. After the other structures of the three-drum forming machine have completed the preparations before the reverse packing operation, the above steps are repeated to complete the reverse packing operation.

[0033] The present application provides a turn-up molding device, which uses the above-mentioned turn-up molding process to attach the sidewall structure 1 to the tire body 2. Figures 1 to 4 As shown, the turn-up forming equipment includes a turn-up capsule 10, a forming drum 20 and a pressure roller assembly 30. The tire body 2 and the sidewall structure 1 are sleeved on the forming drum 20. The forming drum 20 rotates to drive the tire body 2 and the sidewall structure 1 to rotate. The turn-up capsule 10 is connected to the forming drum 20. The turn-up capsule 10 has an inflated state for attaching the first part of the sidewall structure 1 to the tire body 2. When the turn-up capsule 10 is exhausted, a turn-up gap 100 is formed between the turn-up capsule 10 and the second part of the sidewall structure 1 that is not attached to the tire body 2. The pressure roller assembly 30 includes a turn-up pressure roller 31. The turn-up pressure roller 31 is movably arranged relative to the forming drum 20 so that the turn-up pressure roller 31 extends from the turn-up gap 100 and rolls the second part of the sidewall structure 1 onto the tire body 2. In this embodiment, the turn-up capsule 10 only needs to fit the first part of the sidewall structure 1 on the tire body 2, which reduces the size of the turn-up capsule 10, shortens the inflation time of the turn-up capsule 10, and improves the turn-up efficiency. In addition, the pressure of the part of the turn-up capsule 10 close to the forming drum 20 after inflation is relatively large, which can better make the first part of the sidewall structure 1 fit with the tire body 2 under the pressure of the turn-up capsule 10, avoiding the generation of bubbles between the first part of the sidewall structure 1 and the tire body 2; while reducing the size of the turn-up capsule 10, the booster capsule is eliminated, reducing the manufacturing cost of the turn-up forming equipment; after the turn-up capsule 10 is exhausted to produce the turn-up gap 100, the turn-up pressure roller 31 is used to roll the second part of the sidewall structure 1 onto the tire body 2, which is beneficial to improving the turn-up quality and the turn-up efficiency.

[0034] Alternatively, if Figure 1 As shown, along the radial direction of the tire body 2, the height of the reversed capsule 10 on the side of the forming drum 20 is H1, the height of the tire body 2 on the side of the forming drum 20 is H2, and H1 / H2=1 / 4-1 / 2. Tests have shown that when the relationship between H1 and H2 is within the above numerical range, the reversed effect is better and the reversed efficiency is higher.

[0035] In a specific embodiment of the present application, H1 / H2=1 / 3.

[0036] like Figure 4As shown, the pressure roller assembly 30 further includes a bracket 32 ​​and a cylinder 33, the bracket 32 ​​is movably arranged along the radial direction of the tire body 2, the cylinder 33 is arranged on the bracket 32, and the output shaft of the cylinder 33 is connected to the turn-up pressure roller 31, so as to drive the turn-up pressure roller 31 to be movably arranged along the axial direction of the tire body 2 through the cylinder 33. In this way, the turn-up pressure roller 31 is driven by the bracket 32 ​​to move along the radial direction of the tire body 2 to a position corresponding to the turn-up gap 100, and then the turn-up pressure roller 31 is controlled by the cylinder 33 to move along the axial direction of the tire body 2, so that the turn-up pressure roller 31 extends from the turn-up gap 100 until the turn-up pressure roller 31 abuts against the sidewall structure 1; then the turn-up pressure roller 31 is driven by the bracket 32 ​​to retreat along the radial direction of the tire body 2 until the second part of the sidewall structure 1 is completely rolled on the tire body 2.

[0037] In a specific implementation, the pressure roller assembly 30 further includes a driving unit, and an output end of the driving unit is drivingly connected to the bracket 32 ​​to drive the bracket 32 ​​to move along the radial direction of the tire body 2. In this way, the automation degree of the pressure roller assembly 30 is improved.

[0038] In the specific implementation, two turn-up capsules 10 are symmetrically arranged on both axial sides of the tire body 2, and two sidewall structures 1 are symmetrically arranged on both axial sides of the tire body 2. The two turn-up capsules 10 are used to respectively attach the two first parts of the two sidewall structures 1 to the two sides of the tire body 2; the pressure roller assembly 30 is divided into two groups, which are respectively arranged on both sides of the axial direction of the tire body 2, and the two turn-up pressure rollers 31 of the two groups of pressure roller assemblies 30 are used to respectively roll the two second parts of the two sidewall structures 1 on both sides of the tire body 2.

[0039] In a specific implementation, the driving unit is used to drive the brackets 32 of the two groups of pressure roller assemblies 30 to move synchronously along the radial direction of the tire body 2, thereby improving the turn-up efficiency and ensuring the consistency of the two sidewall structures 1.

[0040] In a specific implementation, the driving structure controls the two turn-up rollers 31 to move apart and together along the axial direction of the tire body 2 , thereby improving the turn-up efficiency and ensuring the consistency of the two sidewall structures 1 .

[0041] The forming drum 20 includes a flange 21, which is connected to the chassis through the flange 21. The chassis drives the forming drum 20 to rotate around the axis of the flange 21 through the flange 21, so that the forming drum 20 drives the tire body 2 and the sidewall structure 1 to rotate, and the second part of the sidewall structure 1 will not fall back under the action of centrifugal force, so that a turn-up gap 100 is generated between the second part of the sidewall structure 1 and the turn-up capsule 10.

[0042] like Figure 4As shown, the cylinder 33 is rotatably arranged relative to the bracket 32; the pressure roller assembly 30 also includes a mounting plate, a servo motor 34 and a steering box 35, the bracket 32 ​​is arranged on the mounting plate, the servo motor 34 is arranged on the mounting plate and is spaced from the bracket 32, the steering box 35 is arranged on the mounting plate, and the input shaft of the steering box 35 is connected to the output shaft of the servo motor 34 through a rotating shaft 36; the output shaft of the steering box 35 is connected to the cylinder body of the cylinder 33, and the output shaft of the steering box 35 is perpendicular to the input shaft of the steering box 35, so that the servo motor 34 drives the cylinder body through the rotating shaft 36 to drive the turn-up pressure roller 31 to rotate relative to the bracket 32. The steering box 35 and the servo motor 34 cooperate to drive the cylinder 33 and the turn-up pressure roller 31 to rotate relative to the bracket 32, so that the turn-up pressure roller 31 is always perpendicular to the tire body 2 arranged in an arc shape, which is conducive to improving the rolling effect.

[0043] In a specific implementation, the steering box 35 is a bevel gear steering box, the output shaft of the steering box 35 is perpendicular to the input shaft of the steering box 35, and the servo motor 34 is used to accurately control the rotation angle of the rotating shaft 36, thereby accurately controlling the rotation angle of the turn-up roller 31. In the present application, due to the setting of the turn-up capsule 10, the first part of the sidewall structure 1 can be attached to the tire body 2, and the rotation speed of the forming drum 20 does not need to be too high, and it is only necessary to ensure that the second part of the sidewall structure 1 does not fall back after the turn-up capsule 10 is exhausted.

[0044] During specific use, the turn-up capsule 10 is inflated and the forming drum 20 rotates at high speed; the turn-up capsule 10 is exhausted. Due to the high-speed rotation of the forming drum 20, the outer end of the sidewall structure 1 is subjected to the centrifugal force and will not fall back with the turn-up capsule 10, so that a turn-up gap 100 is generated between the turn-up capsule 10 and the sidewall structure 1, and the turn-up pressure roller 31 is brought to the working position by the bracket 32, and the output end of the cylinder 33 extends to push the turn-up pressure roller 31 out, so that the turn-up pressure roller 31 enters along the turn-up gap 100 and presses onto the sidewall structure 1; the turn-up pressure roller 31 follows the bracket 32 ​​to make a retreat movement, and at the same time, the servo motor 34 rotates, driving the rotating shaft 36 to rotate, the rotating shaft 36 drives the input shaft of the steering box 35 to rotate, and the output shaft of the steering box 35 drives the cylinder 33 to rotate, so that the cylinder 33 swings a certain angle, and the cylinder 33 drives the turn-up pressure roller 31 to swing, so that the angle between the turn-up pressure roller 31 and the tire body 2 changes, and gradually the sidewall structure 1 is completely rolled onto the tire body 2. The sidewall structure 1 is turned up by the combined action of the rotation of the forming drum 20 and the retreat of the turn-up roller 31. The sidewall of the tire produced is smooth and uniform without indentations. The turn-up operation time is short, which improves the production efficiency of the forming machine.

[0045] The present application also provides a three-drum forming machine, which includes a reverse wrapping forming device, and the reverse wrapping forming device is the reverse wrapping forming device mentioned above.

[0046] The reverse packaging forming equipment provided in the present application is applied to a three-drum forming machine, and can realize the rotational pulling reverse packaging of the sidewall structure 1, which is beneficial to improving the reverse packaging efficiency of the three-drum forming machine, improving the service life of the reverse packaging capsule 10 of the three-drum forming machine, and improving the quality of the tires produced by the three-drum forming machine.

[0047] Optionally, the three-drum forming machine provided in the present application is an all-steel three-drum forming machine, which uses the reverse packaging capsule 10, the forming drum 20 and the reverse packaging pressure roller 31 to cooperate to complete the rotary pulling reverse packaging operation.

[0048] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0049] With the rapid development of the tire manufacturing industry, the molding efficiency of tire molding machines is required to be continuously improved. The time of the reverse packaging molding process of the three-drum molding machine in the related technology is relatively long, which has become a bottleneck restricting the speed-up of the three-drum molding machine. The present application is beneficial to improving the reverse packaging efficiency by using the rotary pulling reverse packaging molding process on the three-drum molding machine. The height of the reverse packaging capsule 10 on one side of the molding drum 20 is relatively low, and the inflation diameter is relatively small, which extends the service life of the reverse packaging capsule 10 and reduces the production cost of the reverse packaging capsule 10. The second part of the sidewall structure 1 is rolled by the reverse packaging pressure roller 31, which can avoid leaving indentations on the sidewall structure 1, which is beneficial to improving the reverse packaging effect; there is no need to use the reverse packaging capsule 10 to completely fit the sidewall structure 1 on the tire body 2 and then use the reverse packaging pressure roller 31 to roll the sidewall structure 1, which is beneficial to further improve the reverse packaging efficiency.

[0050] The reverse package molding method provided by the present application has the advantages of being faster, higher quality and more economical. The reverse package molding equipment and the three-drum molding machine provided by the present application can realize a faster, higher quality and more economical tire reverse package molding method.

[0051] 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, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​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 accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0053] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the 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 devices or elements 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 contours of each component itself.

[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. 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 figure. For example, if the device in the accompanying 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.

[0055] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A reverse packaging molding method, characterized in that: The steps include: Step S1, controlling the inflating of the reversed bladder (10) so that the first part of the sidewall structure (1) is attached to the tire body (2); controlling the forming drum (20) to drive the sidewall structure (1) to rotate; Step S2, controlling the exhaust of the turn-up capsule (10) to form a turn-up gap (100) between a second portion of the sidewall structure (1) not attached to the tire body (2) and the turn-up capsule (10); Step S3, controlling the turn-up pressing roller (31) to extend from the turn-up gap (100) and roll the second portion of the sidewall structure (1) onto the tire body (2); The step S3 comprises: Controlling the turn-up pressing roller (31) to extend from the turn-up gap (100) and to make the turn-up pressing roller (31) abut against the sidewall structure (1), controlling the turn-up pressing roller (31) to move along the radial direction of the tire body (2) toward a side away from the forming drum (20), and rolling the second part of the sidewall structure (1) onto the tire body (2); While controlling the turn-up pressing roller (31) to move along the radial direction of the tire body (2) toward a side away from the forming drum (20), controlling the turn-up pressing roller (31) to move along the axial direction of the tire body (2) toward a side close to the tire body (2) to roll the second part of the sidewall structure (1) onto the tire body (2) arranged in an arc shape; Controlling the two inverted bladders (10) located on both axial sides of the tire body (2) to be inflated simultaneously, so that the two sidewall structures (1) located on both sides of the tire body (2) are both attached to the tire body (2); controlling the forming drum (20) to drive the two sidewall structures (1) to rotate synchronously; Controlling the two turn-up capsules (10) to exhaust air simultaneously, so as to form two turn-up gaps (100) between the two turn-up capsules (10) and the two sidewall structures (1); The two turn-up pressing rollers (31) are controlled to extend synchronously into the two turn-up gaps (100) to simultaneously roll the two sidewall structures (1) onto the tire body (2).

2. The reverse packaging forming method according to claim 1, characterized in that: While controlling the turn-up pressing roller (31) to move along the radial direction of the tire body (2) toward a side away from the forming drum (20), the turn-up pressing roller (31) is controlled to rotate so that the turn-up pressing roller (31) is perpendicular to the tire body (2) arranged in an arc shape.

3. A reverse packaging forming device, characterized in that: The reverse package forming method according to any one of claims 1 and 2 is adopted, and the reverse package forming equipment comprises: A shaping drum (20), the tire body (2) and the sidewall structure (1) being sleeved on the shaping drum (20), and the shaping drum (20) rotating to drive the tire body (2) and the sidewall structure (1) to rotate; A turn-up bladder (10), the turn-up bladder (10) being connected to the forming drum (20), the turn-up bladder (10) being in an inflated state for attaching a first portion of the sidewall structure (1) to the tire body (2); wherein, when the turn-up bladder (10) is deflated, a turn-up gap (100) is formed between the turn-up bladder (10) and a second portion of the sidewall structure (1) not attached to the tire body (2); A pressure roller assembly (30), the pressure roller assembly (30) comprising a turn-up pressure roller (31), the turn-up pressure roller (31) being movably arranged relative to the forming drum (20) so that the turn-up pressure roller (31) extends from the turn-up gap (100) and rolls the second portion of the sidewall structure (1) onto the tire body (2).

4. The reverse packaging forming equipment according to claim 3, characterized in that: Along the radial direction of the tire body (2), the height of the inverted capsule (10) on one side of the building drum (20) is H1, the height of the tire body (2) on one side of the building drum (20) is H2, and H1 / H2=1 / 4~1 / 2.

5. The reverse packaging forming equipment according to claim 3, characterized in that: The pressure roller assembly (30) further comprises: a bracket (32), the bracket (32) being movably arranged along the radial direction of the tire body (2); A cylinder (33), wherein the cylinder (33) is arranged on the bracket (32), and an output shaft of the cylinder (33) is connected to the turn-up pressing roller (31), so that the turn-up pressing roller (31) is driven by the cylinder (33) to be movably arranged along the axial direction of the tire body (2).

6. The reverse package forming equipment according to claim 5, characterized in that: The cylinder (33) is rotatably arranged relative to the bracket (32); the pressure roller assembly (30) further comprises: A mounting plate, the bracket (32) being arranged on the mounting plate; a servo motor (34), the servo motor (34) being arranged on the mounting plate and spaced apart from the bracket (32); A steering box (35), the steering box (35) being arranged on the mounting plate, the input shaft of the steering box (35) being connected to the output shaft of the servo motor (34) via a rotating shaft (36); the output shaft of the steering box (35) being connected to the cylinder body of the cylinder (33), the output shaft of the steering box (35) being perpendicular to the input shaft of the steering box (35), so that the servo motor (34) drives the cylinder body via the rotating shaft (36) to drive the turn-up pressure roller (31) to rotate relative to the bracket (32).

7. A three-drum forming machine, comprising a reverse package forming device, characterized in that: The reverse packaging molding equipment is the reverse packaging molding equipment described in any one of claims 3 to 6.

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