Insulating sheet winding assembly and tire building machine

Abstract

The application relates to an insulating sheet winding assembly and a tire forming machine. The insulating sheet winding assembly is used for winding an insulating sheet, and comprises a first frame body, a forming drum and an electrostatic generator. The first frame body is provided with a conductive part which is grounded. The forming drum is rotationally arranged on the first frame body and is provided with a conductive layer which abuts against the conductive part. The electrostatic generator is movably arranged on the first frame body to be close to or away from the conductive layer of the forming drum. The insulating sheet winding assembly is simple, stable and reliable in a starting winding process of the insulating sheet, reduces the participation degree of personnel, and has smaller structure change or requirement on the forming drum than related art, and is easier to obtain.

Description

Technical Field

[0001] This invention relates to the field of rubber machinery and equipment technology, and in particular to an insulating sheet winding assembly and a tire forming machine. Background Technology

[0002] A tire forming machine is a specialized tire production equipment used in the tire manufacturing process to assemble semi-finished components (such as tread, sidewall, crown, molding compound, and tire body) into a tire blank according to process requirements.

[0003] There are three main methods for starting the winding or bonding of rubber sheets on the forming drum of existing tire forming machines. The first is manual winding (or bonding). This method suffers from quality problems due to the uncertainty of manual operation, such as material detachment and significant deviations in the position of the material on the drum (or roller), and also poses safety hazards. The second is vacuum adsorption starting. This method requires adding a vacuum adsorption device to the drum (or roller), increasing the complexity of the equipment. Furthermore, this method cannot be used for drums with specific functions, and vacuum adsorption suffers from problems such as vacuum leakage and adhesive stickiness, resulting in defects in adsorption stability. The third method is starting using a magnetic adsorption pressure plate. This method utilizes the principle of magnetic adsorption, has simple requirements for the structure of the drum (or roller), and is easy to automate. However, it requires a complex automatic pressure plate loading and unloading mechanism to achieve automatic starting; for wide rubber sheets, a large pressure plate span is required, and the material and shape requirements are high; additionally, the pressure plate is prone to deformation and rapid wear after repeated use. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide an insulating sheet winding assembly, which simplifies the initial winding process of the insulating sheet, ensures stability and reliability, reduces the degree of human intervention, and requires less modification or modification to the structure of the forming drum compared to related technologies, making it easier to obtain.

[0005] An embodiment of the present invention also proposes a tire forming machine.

[0006] The insulating sheet winding assembly of this invention is used for winding insulating sheets, and the insulating sheet winding assembly includes:

[0007] A first frame, the first frame being provided with a conductive part, the conductive part being grounded;

[0008] A forming drum, rotatably mounted on the first frame, the forming drum having a conductive layer that abuts against the conductive portion; and

[0009] An electrostatic generator is movably mounted on the first frame to be close to or away from the conductive layer of the molding drum.

[0010] The insulating sheet winding assembly of this invention provides a simple, stable, and reliable initial winding process for insulating sheets, reduces the level of human intervention, and requires less modification or modification to the structure of the forming drum compared to related technologies, making it easier to obtain.

[0011] In some embodiments, the insulating sheet winding assembly further includes a lifting device disposed on the first frame, wherein the electrostatic generator is disposed on the lifting device to drive the electrostatic generator to move.

[0012] In some embodiments, the insulating sheet winding assembly further includes a pressing roller rotatably mounted on the lifting device, the lifting device driving the pressing roller closer to and away from the forming drum, the extending direction of the pressing roller being parallel to the extending direction of the forming drum, and the pressing roller being located in front of the electrostatic generator in the rotational direction of the forming drum.

[0013] In some embodiments, the length of each of the electrostatic generator, the pressing roller, and the conductive layer of the forming drum is greater than or equal to a preset value.

[0014] In some embodiments, the pressing roller is an insulating roller.

[0015] In some embodiments, the lifting device includes:

[0016] A drive motor is mounted on the first frame.

[0017] A lead screw, which is connected to the power output shaft of the drive motor; and

[0018] A first mounting bracket is slidably connected to a first frame body. The first mounting bracket is mounted on a lead screw to drive the first mounting bracket to move. Each of the electrostatic generator and the pressing roller is mounted on the first mounting bracket.

[0019] In some embodiments, the lifting device further includes:

[0020] The cylinder, which is mounted on the first mounting bracket; and

[0021] A second mounting bracket is slidably mounted on the first mounting bracket. The second mounting bracket connects the electrostatic generator and the pressing roller on the side adjacent to the forming drum. The cylinder is connected to the second mounting bracket to drive the electrostatic generator and the pressing roller to move.

[0022] In some embodiments, the electrostatic generator includes an electrostatic generator and an electrostatic bar, the electrostatic bar being connected to the electrostatic generator, the electrostatic bar being disposed on one side of the second mounting bracket, the extension direction of the electrostatic bar being parallel to the extension direction of the molding drum, and the length of the electrostatic bar being greater than or equal to a preset value.

[0023] The tire forming machine of an embodiment of the present invention includes the aforementioned insulating sheet winding assembly.

[0024] The tire forming machine of the present invention can automatically complete the starting winding operation of rubber sheet, thereby improving the automation level of the tire forming machine.

[0025] In some embodiments, the tire forming machine further includes:

[0026] Second frame; and

[0027] A feeding rack is rotatably mounted on the second frame between a working position that engages with the forming drum of the insulating sheet winding assembly and a disengagement position that detaches from the forming drum of the insulating sheet winding assembly. Attached Figure Description

[0028] Figure 1 This is one of the schematic diagrams of a tire forming machine in a winding state according to an embodiment of the present invention;

[0029] Figure 2 This is a second schematic diagram of a tire forming machine in a winding state according to an embodiment of the present invention;

[0030] Figure 3 This is the third schematic diagram of the tire forming machine in the winding state according to an embodiment of the present invention;

[0031] Figure 4 yes Figure 3 A magnified view of a portion of the image;

[0032] Figure 5 This is a schematic diagram of the state of the tire forming machine according to an embodiment of the present invention when the insulating sheet is wound around once;

[0033] Figure 6 This is a schematic diagram of a tire forming machine in a non-winding state according to an embodiment of the present invention.

[0034] Figure label:

[0035] Tire forming machine 1000;

[0036] Winding starter assembly 100;

[0037] Forming drum 1, electrostatic generator 2, lifting device 3, drive motor 31, second mounting frame 32, first mounting frame 33, cylinder 34, pressing roller 4;

[0038] Material feeding rack 200;

[0039] Insulating sheet 300. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] like Figures 1 to 6 As shown, the tire forming machine 1000 of an embodiment of the present invention includes an insulating sheet winding assembly 100.

[0042] The insulating sheet winding assembly 100 includes a first frame (not shown), a forming drum 1, and an electrostatic generator 2. The first frame has a conductive part that is grounded. The forming drum 1 is rotatably mounted on the first frame and has a conductive layer that abuts against the conductive part. The electrostatic generator 2 is movably mounted on the first frame to move closer to or further away from the conductive layer of the forming drum 1.

[0043] Before the insulating sheet 300 is wound, the insulating sheet 300 is conveyed to a position in contact with the forming drum 1 in the insulating sheet winding assembly 100 of the embodiment of the present invention. The end of the insulating sheet 300 is conveyed onto the forming drum 1 (i.e., the starting position, for example, attached). Figure 3 , Figure 4 (Directly above the forming drum 1), the electrostatic generator 2 moves to approach the forming drum 1 and reaches a set position, which is a position where the electrostatic generator 2 is spaced apart from the forming drum 1 and the gap does not affect the passage of the insulating sheet 300. In other words, after the electrostatic generator 2 moves to this set position, the electrostatic generator 2 is located above the forming drum 1, and the insulating sheet 300 is located between the electrostatic generator 2 and the forming drum 1.

[0044] Then, the electrostatic generator 2 is turned on, and the forming drum 1 begins to rotate. The electrostatic generator 2 forms an ion cloud at its emitting end. When the insulating sheet 300 passes through the ion cloud region, the surface of the insulating sheet 300 facing the electrostatic generator 2 in the thickness direction becomes charged. Meanwhile, the grounded conductive layer of the forming drum 1 on the other side of the insulating sheet 300 in the thickness direction generates the opposite charge (by passing the tip of the insulating sheet 300 between the electrostatic generator 2 and the forming drum 1). There is an attraction between the charge on the insulating sheet 300 and the opposite charge on the conductive layer, causing the insulating sheet 300 to adhere to the forming drum 1, thus completing the beginning of the insulating sheet 300 on the forming drum 1. As the forming drum 1 rotates, the insulating sheet 300 gradually winds around the forming drum 1. Furthermore, the insulating sheet 300 continues to wind around the forming drum 1 as the forming drum 1 continues to rotate.

[0045] The electrostatic generator 2 can stop working after the tip of the insulating sheet 300 is adsorbed onto the forming drum 1. The charge on the insulating sheet 300 is slowly lost because the insulating sheet 300 is non-conductive, which can ensure the reliable adsorption of the tip of the insulating sheet 300.

[0046] In an embodiment of the present invention, the insulating sheet winding assembly 100 utilizes an electrostatic generator 2 to generate charges on the insulating sheet 300 and opposite charges on the grounded conductive layer of the forming drum 1. The attraction between these opposite charges causes the insulating sheet 300 to adhere to the forming drum 1, thus completing the initiation and winding of the insulating sheet 300 as the forming drum 1 rotates. Furthermore, in this embodiment, the conductive layer on the forming drum 1 of the insulating sheet winding assembly 100 abuts against the conductive portion of the first frame, thereby grounding the conductive layer. This grounding method is simple and easy to manufacture.

[0047] The insulating sheet winding assembly 100 of this invention proposes a new method for initiating the winding of the insulating sheet 300, namely, by having the end of the insulating sheet 300 pass between the electrostatic generator 2 and the forming drum 1. This method simplifies and stabilizes the initiation winding process of the insulating sheet 300. Compared to related technologies that add a vacuum adsorption device to the forming drum, the insulating sheet winding assembly 100 of this invention requires less modification or has fewer requirements on the structure of the forming drum 1, and is easier to obtain.

[0048] Insulating sheet 300 can be rubber sheet, resin sheet, etc.

[0049] Therefore, the tire forming machine 1000 of the present invention can automatically complete the starting winding operation of rubber sheet, thereby improving the automation level of the tire forming machine 1000.

[0050] To make the technical solution of this application easier to understand, the following description uses the example of the conveying direction of the insulating sheet 300 being consistent with the front-back direction and the extension direction of the rotation axis of the forming drum 1 being consistent with the left-right direction. The front-back direction is as follows: Figure 1 , Figures 3 to 6 As shown, the left and right directions are as follows Figure 1 and Figure 2 As shown.

[0051] The tire forming machine 1000 of this invention includes a second frame (not shown in the figure), a feeding rack 200 and an insulating sheet winding assembly 100.

[0052] The feeding rack 200 is rotatably mounted on the second frame between a working position that can cooperate with the forming drum 1 of the insulating sheet winding assembly 100 and a disengagement position that can disengage from the forming drum 1 of the insulating sheet winding assembly 100.

[0053] Before the tire forming machine 1000 performs the winding operation of the insulating sheet 300, the feeding rack 200 is in this disengaged position, see reference. Figure 6 As shown, the feeding rack 200 is spaced apart from the forming drum 1.

[0054] Before the tire forming machine 1000 performs the winding operation on the insulating sheet 300, the feeding rack 200 rotates counterclockwise to this working position (see...). Figure 1 The insulating sheet 200 is fed by the feeding rack 200 toward the forming drum 1 (i.e., Figure 1 The material is conveyed in a backward direction to bring the head of the insulating sheet 200 to the starting position. Then, the feeding rack 200 cooperates with the insulating sheet winding assembly 100, the electrostatic generator 2 is turned on, and the feeding of the feeding rack 200 and the rotation of the forming drum 1 are synchronized, thereby completing the starting and winding of the insulating sheet 200.

[0055] After the tire forming machine 1000 completes the winding of the insulating sheet 300, the feeding rack 200 rotates clockwise to the release position (see...). Figure 6 ).

[0056] The tire forming machine 1000 automatically feeds the insulating sheet 300 through the feeding rack 200, further improving the automation level of the tire forming machine 1000.

[0057] The insulating sheet winding assembly 100 includes a first frame, a forming drum 1, an electrostatic generator 2, a lifting device 3, and a pressing roller 4.

[0058] The first frame of the insulating sheet winding assembly 100 and the second frame of the feeding rack 200 are both part of the frame of the tire forming machine 1000.

[0059] The first frame is equipped with a conductive part, which is grounded. Specifically, the conductive part is made of a conductive metal material.

[0060] A forming drum 1 is rotatably mounted on a first frame. The forming drum 1 has a conductive layer that abuts against a conductive part. Specifically, at least a portion of the forming drum 1 is made of metal, giving it the conductive layer. The forming drum 1 is mounted on the first frame so that the conductive layer of the forming drum 1 and the conductive part of the first frame form a conductive path. In other words, grounding the conductive part of the first frame means that the conductive layer is grounded, which is a relatively simple grounding method.

[0061] A lifting device 3 is mounted on the first frame, and an electrostatic generator 2 is installed on the lifting device 3 to move the electrostatic generator 2 closer to or further away from the conductive layer of the forming drum 1. In other words, the lifting device 3 can not only move the electrostatic generator 2 closer to the forming drum 1, but also move it further away from the forming drum 1. The lifting device 3 automatically moves the electrostatic generator 2 up and down, further improving the automation level of the insulating sheet winding assembly 100 initiating the insulating sheet 300 on the forming drum 1, and also further improving the automation level of the tire forming machine 1000.

[0062] The electrostatic generator 2 includes an electrostatic motor (not shown in the figure) and an electrostatic rod 21. The electrostatic rod 21 is connected to the electrostatic motor and is mounted on a lifting device 3, which moves the electrostatic rod 21. Specifically, the electrostatic rod 21 is electrically connected to the electrostatic motor. That is, the electrostatic motor is the main unit of the electrostatic generator 2, and the electrostatic rod 21 is the emitting unit. When the electrostatic motor is turned on, an ion cloud (static electricity) is formed on the electrostatic rod 21. The separate arrangement of the electrostatic motor and the electrostatic rod 21, with the electrostatic rod 21 mounted on the lifting device 3, reduces the energy consumption of the lifting device 3.

[0063] The extension direction of the electrostatic bar 21 is parallel to the extension direction of the forming drum 1, so that the extension direction of the charged area formed by the electrostatic generator 2 on the insulating sheet 300 is the same as the extension direction of the forming drum 1, which further enhances the attraction between opposite charges on the insulating sheet 300, thereby further improving the stability and reliability of the starting winding process of the insulating sheet 300 by the insulating sheet winding assembly 100.

[0064] The pressing roller 4 is rotatably mounted on the lifting device 3. The lifting device 3 drives the pressing roller 4 to approach and move away from the forming drum 1. The extension direction of the pressing roller 3 is parallel to the extension direction of the forming drum 1. The pressing roller 4 is located in front of the electrostatic generator 2 in the rotation direction of the forming drum 1.

[0065] Before the insulating sheet winding assembly 100 winds the insulating sheet 300, the pressing roller 4 descends to a height that mates with the forming drum 1. During the winding operation of the insulating sheet winding assembly 100, the pressing roller 4 mates with the forming drum 1 to compress the insulating sheet 300 so that the insulating sheet 300 at that position adheres to the forming drum 1.

[0066] The pressing roller 4 is located in front of the electrostatic bar 21 in the rotation direction of the forming drum 1. That is to say, the insulating sheet 300 is first pressed onto the forming drum 1 by the pressing roller 4, and then the insulating sheet 300 is adsorbed onto the forming drum 1 under the action of the electrostatic generator 2 (electrostatic bar 21). This can avoid the problem of the insulating sheet 300 curling up during the initial winding process.

[0067] Specifically, see Figure 3 and Figure 4 As shown, the pressing roller 4 is located directly above the forming drum 1, and the electrostatic rod 21 is located diagonally above the forming drum 1, with the electrostatic rod 21 positioned behind the pressing roller 4. That is to say, in Figure 2 and Figure 4 In the embodiment shown, before the insulating sheet 300 is wound by the insulating sheet winding assembly 100, the beginning of the insulating sheet 300 is conveyed to the top of the forming drum 1, that is, the starting position is directly above the forming drum 1.

[0068] The pressing roller 4 is mounted on the lifting device 3. The lifting device 3 can drive the pressing roller 4 and the electrostatic bar 21 to move simultaneously, which can ensure the synchronicity of the pressing roller 4 and the electrostatic bar 21 in the winding operation of the insulating sheet 300 by the insulating sheet winding assembly 100.

[0069] Optionally, the pressing roller 4 is an insulating roller. When the electrostatic generator 2 is turned on, the insulating pressing roller 4 can prevent the formation of charges opposite to those on the insulating sheet 300, thereby preventing the insulating sheet 300 from forming an attraction between itself and the pressing roller 4 when passing through it, thus ensuring the stability of the starting and winding process of the insulating sheet 300 by the insulating sheet winding assembly 100.

[0070] The length of each of the conductive layers of the electrostatic bar 21, the pressing roller 4, and the forming drum 1 is greater than or equal to a preset value. This preset value is equal to the width of the insulating sheet 300. That is, the length of each of the conductive layers of the electrostatic bar 21, the pressing roller 4, and the forming drum 1 is greater than or equal to the width of the insulating sheet 300, thereby ensuring that during the starting and winding process of the insulating sheet 300 by the insulating sheet winding assembly 100, the insulating sheet 300 can completely pass through the compression of the pressing roller 4, and the entire width direction of the insulating sheet 300 can pass through the electrostatic action area of ​​the electrostatic generator 2. In other words, the entire head of the insulating sheet 300 passes through the electrostatic action area of ​​the electrostatic generator 2, thereby further ensuring that the head of the insulating sheet 300 completes the starting and overall winding process and avoids edge curling.

[0071] Optionally, the length of each of the conductive layers of the electrostatic bar 21, the pressing roller 4, and the forming drum 1 is greater than the width of the insulating sheet 300.

[0072] Optionally, the lifting device 3 includes a drive motor 31, a lead screw, and a first mounting bracket 33. The drive motor 31 is mounted on the first frame. The lead screw is connected to the power output shaft of the drive motor 31, and the drive motor 31 drives the lead screw to rotate. The first mounting bracket 33 is slidably connected to the first frame, and the lead screw is mounted on the first mounting bracket 33. The rotation of the lead screw causes the first mounting bracket 33 to move up and down. Each of the electrostatic bar 21 and the pressing roller 4 is mounted on the first mounting bracket 33. That is, each of the electrostatic bar 21 and the pressing roller 4 moves up and down with the up and down movement of the first mounting bracket 33 to approach and move away from the forming drum 1.

[0073] The drive motor 31, lead screw, and first mounting bracket 33 can drive the electrostatic bar 21 and the pressing roller 4 to move a large distance. When the tire forming machine 1000 is performing non-winding operations, it can drive the electrostatic bar 21 and the pressing roller 4 to a position far away from the forming drum 1, so as to provide space for other operations of the tire forming machine 1000.

[0074] Specifically, drive motor 31 is a servo motor.

[0075] The lifting device 3 further includes a cylinder 34 and a second mounting bracket 32. The cylinder 34 is mounted on the first mounting bracket 33. The second mounting bracket 32 ​​is slidably mounted on the first mounting bracket 33. The second mounting bracket 32 ​​is connected to the electrostatic bar 21 and the pressing roller 4 on the side adjacent to the forming drum 1. The cylinder 34 is connected to the second mounting bracket 32 ​​to drive the electrostatic bar 21 and the pressing roller 4 to move.

[0076] The insulating sheet winding assembly 100 uses a cylinder 34 to drive the electrostatic bar 21 and the pressing roller 4 to move within a small range. After the drive motor 31 drives the first mounting frame 33 to descend into position, the cylinder 34 drives the electrostatic bar 21 and the pressing roller 4 to press down. Furthermore, using a cylinder 34 not only facilitates the adjustment of the movement stroke, but also has a certain degree of self-adaptation capability, which can avoid the formation of large extrusion pressure between the pressing roller 4 and the forming drum 1, thus preventing adverse effects on the insulating sheet 300 and the winding process.

[0077] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0079] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0080] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0081] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0082] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An insulating sheet winding assembly, characterized in that, The insulating sheet winding assembly is used to wind insulating sheets, and the insulating sheet winding assembly includes: A first frame, the first frame being provided with a conductive part, the conductive part being grounded; A molding drum (1) is rotatably mounted on the first frame. The molding drum (1) is provided with a conductive layer, which abuts against the conductive part. An electrostatic generator (2) is movably mounted on the first frame to be close to or away from the conductive layer of the molding drum (1); When the electrostatic generator is turned on, the forming drum begins to rotate. The electrostatic generator forms an ion cloud at its emitting end. When the insulating sheet passes through the ion cloud region, the surface of the insulating sheet facing the electrostatic generator in the thickness direction will become charged. Meanwhile, the grounded conductive layer of the forming drum on the other side of the insulating sheet in the thickness direction will generate the opposite charge. There is an attraction between the charge on the insulating sheet and the opposite charge on the conductive layer, causing the insulating sheet to adhere to the forming drum.

2. The insulating sheet winding assembly according to claim 1, characterized in that, It further includes a lifting device (3), which is mounted on the first frame, and the electrostatic generator (2) is mounted on the lifting device (3) to drive the electrostatic generator (2) to move.

3. The insulating sheet winding assembly according to claim 2, characterized in that, It further includes a pressing roller (4), which is rotatably mounted on the lifting device (3). The lifting device (3) drives the pressing roller (4) to approach and move away from the forming drum (1). The extension direction of the pressing roller (4) is parallel to the extension direction of the forming drum (1). The pressing roller (4) is located in front of the electrostatic generator (2) in the rotation direction of the forming drum (1).

4. The insulating sheet winding assembly according to claim 3, characterized in that, The length of each of the conductive layers of the electrostatic generator (2), the pressing roller (4), and the forming drum (1) is greater than or equal to a preset value.

5. The insulating sheet winding assembly according to claim 3, characterized in that, The pressing roller (4) is an insulating roller.

6. The insulating sheet winding assembly according to claim 3, characterized in that, The lifting device (3) includes: A drive motor (31) is mounted on the first frame; A lead screw, which is connected to the power output shaft of the drive motor (31); and The first mounting bracket (33) is slidably connected to the first frame body. The first mounting bracket (33) is provided on the lead screw to drive the first mounting bracket (33) to move. Each of the electrostatic generator (2) and the pressing roller (4) is provided on the first mounting bracket (33).

7. The insulating sheet winding assembly according to claim 6, characterized in that, The lifting device (3) further includes: Cylinder (34), said cylinder (34) being mounted on the first mounting bracket (33); and The second mounting bracket (32) is slidably mounted on the first mounting bracket (33). The second mounting bracket (32) connects the electrostatic generator (2) and the pressing roller (4) on the side adjacent to the forming drum (1). The cylinder (34) is connected to the second mounting bracket (32) to drive the electrostatic generator (2) and the pressing roller (4) to move.

8. The insulating sheet winding assembly according to claim 7, characterized in that, The electrostatic generator (2) includes an electrostatic generator and an electrostatic bar (21). The electrostatic bar (21) is connected to the electrostatic generator. The electrostatic bar (21) is located on one side of the second mounting bracket (32). The extension direction of the electrostatic bar (21) is parallel to the extension direction of the molding drum (1). The length of the electrostatic bar (21) is greater than or equal to a preset value.

9. A tire forming machine, characterized in that, It includes an insulating sheet winding assembly (100), wherein the insulating sheet winding assembly (100) is the insulating sheet winding assembly according to any one of claims 1 to 8.

10. The tire forming machine according to claim 9, characterized in that, Further includes: Second frame; and A feeding rack (200) is rotatably mounted on the second frame between a working position that engages with the forming drum (1) of the insulating sheet winding assembly (100) and a disengagement position that disengages from the forming drum (1) of the insulating sheet winding assembly (100).

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