Coiling device, cylindrical product and coiling method

Abstract

The application discloses a winding device, a cylindrical product and a winding method. The winding device comprises two winding rollers arranged side by side, the outer peripheral wall of each winding roller is provided with a surface texture, the surface textures of the two winding rollers are complementary and meshed with each other in the radial direction of the winding roller, and an avoiding space for placing a workpiece to be wound is defined between the two winding rollers. A die is arranged in the avoiding space, and the die can move along the axial direction of the winding roller. In the embodiment of the application, the winding rollers are arranged on the two sides of the die, the complementary surface textures are used to change the rotation direction of the cylindrical die material while the cylindrical die material is advancing, so that the accumulated torsion generated in the winding process of the cylindrical film material can be eliminated, and the generation of the 8-shaped edge can be avoided. Meanwhile, the sliding of the cylindrical film material on the die can be avoided. In addition, synchronous adjustment of the winding rollers can be conveniently realized, and the production difficulty is reduced.

Description

Technical Field

[0001] This application relates to the field of winding equipment technology, specifically to a winding device, a cylindrical product, and a winding method. Background Technology

[0002] In related technologies, winding is a process involving the winding of materials into a roll. The winding process for sheet materials (i.e., sheet stock) is familiar, such as the winding of fabrics, sheets, and films. There is also a special winding mode: the winding of cylindrical materials (i.e., tubular stock). In this mode, sheet stock is wound into a cylindrical roll, and tubular stock is wound into a ring with a specific diameter and thickness.

[0003] Sheet winding is accomplished by a spool located at the center of a cylindrical tube, thus the final wound tube always contains a spool. However, coil winding cannot be accomplished using a spool-driven method. Instead, a winding roller is placed on one side of the coil, providing friction to the side of the coil to complete the winding process.

[0004] For certain products, the winding process of the tubing is quite important. For example, in the manufacturing process of gloves, the ring-shaped structure at the wrist opening is prepared by winding; the resulting ring-shaped structure is called a rolled edge. Similarly, in the final packaging process of condoms, the condom is also rolled into a ring shape using a winding process.

[0005] There are still some limitations and problems in the use of cylindrical coil take-up rollers. For example, since the coil take-up process relies on the torque generated by the material itself, a figure-eight edge phenomenon is easily generated during take-up. The take-up speed of the cylindrical coil is determined by both the advance speed of the coil (machine speed) and the angle between the coil and the take-up roller. If the machine speed is too high or the angle is too large, excessive tension will be generated on the opposite side of the take-up point, causing the opposite side to slip on the die, resulting in take-up failure. Reducing the machine speed will reduce production efficiency, while reducing the angle between the take-up roller and the coil will significantly increase the length of the take-up roller and require more equipment space. Furthermore, because existing take-up rollers need to be segmented to ensure that the torque generated during take-up is equal in magnitude and opposite in direction, so that the generated torque cancels each other out, different take-up rollers need to be properly adjusted and matched, which increases the difficulty of production. Summary of the Invention

[0006] This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a winding device and method that can effectively solve the problem of figure-eight edges generated in the current winding of bobbins.

[0007] One embodiment of the winding device of this application includes:

[0008] Two take-up rollers are arranged side by side. Each take-up roller has a surface texture on its outer peripheral wall. There is a clearance space between the surface textures of the two take-up rollers for placing a mold. The surface textures on both sides of the mold mesh with each other and complement each other in the radial direction of the take-up rollers.

[0009] A mold is disposed in the clearance space and is movable along the axial direction of the take-up roller. The mold is used to place the workpiece to be taken up.

[0010] Furthermore, the surface texture includes protrusions and depressions that are present on the outer peripheral wall of the take-up roller and are spaced apart along the axial direction of the take-up roller, wherein in the radial plane of the take-up roller, a protrusion of one take-up roller is opposite to a depression of another take-up roller.

[0011] Furthermore, the radial plane of the protrusion is perpendicular to the axial direction of the take-up roller; or, the radial plane of the protrusion is set at an angle to the axial direction of the take-up roller.

[0012] Furthermore, the protrusion is a continuous threaded structure, wherein the threaded structures on the outer peripheral walls of the two take-up rollers are arranged in opposite directions.

[0013] Furthermore, the two take-up rollers rotate in opposite directions, wherein the angle between the linear velocity direction of the contact point between the surface texture and the workpiece and the winding direction of the workpiece is θ, where 0° < θ < 90°.

[0014] Furthermore, it also includes a mold base, wherein the mold is mounted on the central axis of the mold base, and the mold is rotatable about its own axis.

[0015] Furthermore, the axis of the mold is set at an acute angle to the axis of the take-up roller.

[0016] Furthermore, the cross-section of the mold is circular.

[0017] Another embodiment of the winding method of this application is applied to the winding apparatus as described above, and the winding method includes the following steps:

[0018] The cylindrical membrane material is fitted onto the mold, and the mold can rotate around its own axis.

[0019] The cylindrical film and the mold move at a constant speed along the axial direction of the take-up rollers, so that the cylindrical film moves forward with the mold to the clearance space. The outer wall of the take-up rollers abuts against the cylindrical film on the mold. The two take-up rollers rotate at a constant speed towards each other around their own axis and in the direction of rolling up the cylindrical film, so that the surface texture of the two take-up rollers abuts against the cylindrical film on the mold in an alternating manner and drives the cylindrical film to roll up.

[0020] The cylindrical membrane material continues to advance with the mold until the mold leaves the clearance space.

[0021] In another aspect of this application, the cylindrical product is processed using at least the winding method described above.

[0022] The winding device, cylindrical product, and winding method of this application embodiment have at least the following beneficial effects: In this application embodiment, winding rollers are arranged on both sides of the mold, and complementary surface textures are used to realize that the cylindrical mold material changes its rotation direction while moving forward. In this way, the torque accumulation generated during the winding of the cylindrical film material can be eliminated, thereby effectively reducing the generation of figure-eight edges. At the same time, in this application embodiment, the contact point (i.e., the winding point) between the cylindrical mold material and the winding rollers changes continuously between the two winding rollers. In this way, the tension generated on the opposite side during winding can be effectively eliminated, and the cylindrical film material is prevented from sliding on the mold. In addition, compared with the solution of segmented winding rollers to make the generated torque equal in magnitude and opposite in direction, the parallel winding rollers in this application embodiment can facilitate the synchronous adjustment of the winding rollers, reducing the production difficulty.

[0023] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0024] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1 This is a schematic diagram of a sheet winding process;

[0026] Figure 2 This is a schematic diagram of a latex glove, in which the wrist of the latex glove in the diagram has a rolled edge;

[0027] Figure 3 This is a schematic diagram of the opening end of a condom, wherein the opening end of the condom in the diagram has a rolled edge;

[0028] Figure 4 This is a schematic diagram of a cylindrical material winding process;

[0029] Figure 5 This is a schematic diagram of a condom manufactured using an existing rolling process, wherein the rolled edge of the condom shown in the diagram has a figure-eight edge;

[0030] Figure 6 This is a schematic diagram of the structure of two parallel take-up rollers in one embodiment of this application. The protrusions in the diagram are straight tooth structures.

[0031] Figure 7This is a schematic diagram of two parallel take-up rollers in another embodiment of this application. The protrusions in the diagram are oblique tooth structures.

[0032] Figure 8 This is a schematic diagram of the position of a winding device according to one embodiment, wherein the X direction is the axial direction of the winding roller and the Y direction is the axial direction of the die;

[0033] Figure 9 This is a schematic diagram showing the position of the winding device in one of the states of an embodiment.

[0034] Figure 10 This is a schematic diagram of the winding device from another perspective, representing one embodiment.

[0035] Figure 11 This is a schematic diagram of the structure of a winding device according to one embodiment, in which one of the winding rollers cooperates with a die and a bobbin. The diagram shows a schematic diagram of the die located at the beginning of the clearance space.

[0036] Figure 12 This is a schematic diagram of another position of one of the winding rollers of the winding device according to one embodiment, and the mold and the bobbin are shown. The diagram shows the mold located in the middle of the clearance space.

[0037] Figure 13 This is a schematic diagram illustrating another position of one of the winding rollers, the die, and the bobbin in a winding apparatus according to one embodiment. The diagram shows the die located at the tail end of the clearance space.

[0038] Figure 14 This is a structural schematic diagram of a cylindrical product.

[0039] Figure label:

[0040] 1. Roll; 2. Sheet; 3. Cylindrical film; 4. Ring;

[0041] 100. Take-up roller; 110. Protrusion; 120. Recess; 130. Clearance space;

[0042] 200. Mold. Detailed Implementation

[0043] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0044] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0045] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0046] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0047] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. 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.

[0048] In related technologies, winding is a process involving the winding of materials into a roll. The quality of the winding process affects the appearance, packaging, and even performance of the final product. The winding process is familiar to sheet materials (i.e., sheet 2), such as the winding of fabrics, sheets 2, and films. Figure 1 As shown. In addition, there is a special winding mode, namely the winding of cylindrical materials (i.e., tubular materials). In this mode, sheet 2 is wound into a cylindrical roll, while tubular materials are wound into a ring with a certain ring diameter and ring thickness.

[0049] For certain products, the winding process of the tubular material is quite important. For example, in the manufacturing process of gloves, the ring-shaped structure at the wrist opening is prepared by winding; the resulting ring-shaped structure is called a rolled edge. Figure 2 As shown; in the final packaging process of existing condom products, the condom is also rolled into a ring shape using a winding process, such as... Figure 3 and Figure 14 As shown.

[0050] The sheet 2 is wound up by a shaft 1 located at the center of the cylindrical tube, so the final wound tube contains a shaft. However, the winding of the cylinder cannot be accomplished by a shaft-driven method. Instead, a winding roller is placed on one side of the cylinder, and the roller provides friction to the side of the cylinder to complete the winding.

[0051] Due to the unique winding mode of the tubular material, its winding equipment structure differs from that of the sheet material 2, although both include a winding roller 100 as a key component. The winding roller 100 of the sheet material 2 is typically a rigid shaft roller with a certain strength. Driven by a power source, it rotates, and the sheet material 2 winds around its surface. The direction of movement of the sheet material 2 is the same as and perpendicular to the rotation direction of the shaft roller. The winding speed is determined by the rotational speed of the winding roller 100. In contrast, the winding roller 100 of the tubular material is typically a rigid shaft wrapped in a soft material. The soft surface of the winding roller 100 contacts the edge of the tubular material. The winding roller 100 is at a certain angle to the winding direction of the tubular material. When the winding roller 100 rotates, friction lifts a small portion of the contacting edge of the tubular material. Simultaneously, the tubular material rotates at an angle and advances a short distance in a direction perpendicular to its axis, thus maintaining contact between the edge of the tubular material and the winding roller 100. This process winds the tubular material into a ring shape. Figure 4 As shown.

[0052] The speed at which the cylinder is wound is determined by the angle between the winding roller 100 and the cylinder, as well as the speed at which the cylinder moves along its axis normal (vehicle speed).

[0053] The current cylindrical coil winding roller 100 still has some limitations and problems in use. For example, since the cylindrical coil winding process relies on the torque generated by the material itself, if the torque accumulates in one direction, it will produce a figure-eight edge phenomenon, such as... Figure 5As shown. Therefore, during the winding process, the spindle needs to change its rotation direction and the winding rollers 100 need to be segmented to cancel out the torque generated during winding and eliminate the figure-eight edge phenomenon. Since the winding speed of the spindle is determined by the forward speed of the spindle (machine speed) and the angle between the spindle and the winding rollers 100, if the machine speed is too high or the angle is too large, excessive tension will be generated on the opposite side of the winding point of the spindle, causing the opposite side to slip on the die 200, resulting in winding failure. This phenomenon is more likely to occur when the friction between the spindle and the die 200 is low or the diameter of the spindle is large. Reducing the machine speed will reduce production efficiency, while reducing the angle between the winding rollers 100 and the spindle will significantly increase the length of the winding rollers 100 and require more equipment space, which creates a contradiction. In addition, since the existing winding rollers 100 need to be segmented to ensure that the torque generated during winding is equal in magnitude and opposite in direction, so as to cancel out each other, different edge-winding rollers need to be well adjusted and matched, which increases the difficulty of production.

[0054] In view of this, embodiments of this application propose a winding device to effectively solve the aforementioned problems.

[0055] See Figures 6 to 8 One embodiment of this application discloses a winding device, which includes a winding roller 100 and a die 200.

[0056] Specifically, there are two take-up rollers 100 arranged side by side. Each take-up roller 100 has a textured surface on its outer peripheral wall. A clearance space 130 for placing a mold 200 is provided between the surface textures of the two take-up rollers 100. The surface textures on both sides of the mold 200 mesh and complement each other in the radial direction of the take-up rollers 100. The mold 200 is disposed within the clearance space 130 and is movable along the axial direction of the take-up rollers 100. The mold 200 is used to hold the workpiece to be taken up.

[0057] It's understandable. Figures 6 to 8 In the diagram, the X direction refers to the axial direction of the take-up roller 100. In this embodiment, the workpiece refers to the cylindrical film material 3, also known as the cylindrical material.

[0058] In this embodiment, take-up rollers 100 are provided on both sides of the mold 200. Complementary surface textures are used to change the rotation direction of the cylindrical mold material while it is moving forward. This can eliminate the accumulation of torque generated during the winding of the cylindrical film material 3, thereby avoiding the formation of figure-eight edges. At the same time, in this embodiment, the contact point (i.e., the winding point) between the cylindrical mold material and the take-up roller 100 changes continuously between the two take-up rollers 100. This can effectively eliminate the tension generated on the opposite side during winding, and prevent the cylindrical film material 3 from sliding on the mold 200. In addition, compared with the solution of segmented take-up rollers 100 to make the generated torque equal in magnitude and opposite in direction, the parallel take-up rollers 100 in this embodiment can easily realize the synchronous adjustment of the take-up rollers 100, reducing the production difficulty.

[0059] It is worth understanding that the recess 120 is relative to the protrusion 110. The recess 120 can be defined and separated by the protrusion 110, or it can be obtained by subtractive processing on the outer peripheral wall surface of the take-up roller 100.

[0060] For some embodiments of this application, please refer to [link / reference]. Figures 6 to 8 The surface texture includes protrusions 110 and recesses 120 that are spaced apart on the outer peripheral wall of the take-up roller 100 along the axial direction of the take-up roller 100. In the radial plane of the take-up roller 100, the protrusion 110 of one take-up roller 100 is opposite to the recess 120 of the other take-up roller 100. That is, when the mold 200 on which the cylindrical film material 3 is fitted moves to the clearance space 130 between the two take-up rollers 100, one side of the cylindrical film material 3 abuts against one of the protrusions 110 of one take-up roller 100, and the other side of the cylindrical film material 3 is directly opposite the recess 120 of the other take-up roller 100. As the cylindrical film 3 and the mold 200 continue to advance along the X direction, the cylindrical film 3 moves from the first position to the second position. The side of the cylindrical film 3 that abutted against the protrusion 110 in the first position will be directly opposite the adjacent recess 120 in the second position, while the side of the cylindrical film 3 that was directly opposite the recess 120 in the first position will abut against the adjacent protrusion 110 in the second position. Thus, as the cylindrical film 3 continues to advance along the X direction, the two sides of the cylindrical film 3 will alternately abut against the protrusion 110 and the recess 120 respectively. When the cylindrical film 3 is located in the recess 120, the accumulation of torque generated during the winding process can be eliminated, thereby preventing the formation of a figure-eight edge. Simultaneously, the winding point of the cylindrical film 3 that abuts against the two winding rollers 100 continuously alternates between the two winding rollers 100 during its advancement, thereby eliminating the tension generated on the opposite side during winding and preventing the cylindrical film 3 from sliding on the mold 200. Meanwhile, the parallel winding rollers 100 can be easily adjusted synchronously, reducing production difficulty.

[0061] In some embodiments of this application, see Figure 6 and Figure 8 The radial plane of the protrusion 110 is perpendicular to the axial direction of the take-up roller 100. That is, the protrusion 110 has a straight tooth structure relative to the take-up roller 100.

[0062] In some embodiments of this application, see Figure 7 The radial plane of the protrusion 110 is set at an angle to the axial direction of the take-up roller 100. That is, the protrusion 110 has a helical tooth structure relative to the take-up roller 100. When the protrusion 110 abuts against the cylindrical film 3, the angle between the abutment point and the radial plane of the protrusion 110 and the axis of the take-up roller 100 is an acute angle. Thus, when the take-up roller 100 is rotated to roll up the cylindrical film 3, the take-up roller 100 can be used to push the cylindrical film 3 and the mold 200 forward simultaneously.

[0063] In some embodiments of this application, the radial plane of the protrusion 110 is arranged at an angle to the axial direction of the take-up roller 100, and the protrusion 110 has a continuous thread structure, wherein the thread structures on the outer peripheral walls of the two take-up rollers 100 are arranged in opposite directions. Thus, when the two take-up rollers 100 rotate, and the linear velocity direction of the contact point between the two take-up rollers 100 and the cylindrical film 3 is consistent with the take-up direction of the cylindrical film 3, the cylindrical film 3 can be rolled up, simultaneously pushing the mold 200 and the cylindrical film 3 forward. Furthermore, the threaded protrusion 110 is easy to manufacture, helping to reduce manufacturing difficulty and cost.

[0064] It should be noted that the angle between the linear velocity direction of the contact point between the surface texture of the take-up roller 100 and the workpiece and the winding direction of the workpiece is θ, where 0° < θ < 90°.

[0065] In the above embodiment, the direction of the linear velocity at the contact point between the surface texture of the two take-up rollers 100 and the workpiece is consistent with the winding direction of the workpiece, meaning that the angle between the direction of the linear velocity at the contact point between the take-up rollers 100 and the workpiece and the winding direction of the workpiece is θ, where 0° < θ < 90°. Thus, rotating the take-up rollers 100 can cause the cylindrical film 3 in contact with the take-up rollers 100 to be wound up. Simultaneously, the force exerted by the take-up rollers 100 on the mold 200 and the cylindrical film 3 can be used to move the mold 200 and the cylindrical film 3 along the X direction.

[0066] The speed at which the cylinder is wound is determined by the angle between the winding roller 100 and the cylinder, as well as the speed at which the cylinder moves along its axis normal (vehicle speed).

[0067] In some embodiments of this application, the winding device further includes a die holder (not shown in the figure), the die 200 is mounted on the central axis of the die holder, and the die 200 is rotatable about the axis of the die holder itself.

[0068] In one possible implementation, the mold base can move along the axial direction of the mold 200, so that the annular structure of the cylindrical mold material can always be located between the two take-up rollers 100 during the process of rolling up the cylindrical film material 3, thereby ensuring that the cylindrical film material 3 can always be in contact with the take-up rollers 100 during the rolling process.

[0069] In another possible implementation, when winding the cylindrical film material 3, the mold 200 moves only along the axial direction of the winding roller 100. Specifically, during the winding process, the wound portion of the cylindrical film material 3 forms a loop 4 (i.e., a ring structure). As the amount of wound cylindrical film material 3 gradually increases, the diameter of the loop 4 increases. However, during this process, the loop 4 of the cylindrical film material 3 moves upward along the mold 200, while the positional interval between the two winding rollers 100 is minimal, and the interval on the upper and lower sides gradually increases. In this way, the ring structure can remain in contact with the winding roller 100 during the upward movement, thereby ensuring the winding effect of the cylindrical film material 3.

[0070] In some embodiments of this application, see Figure 9 and Figure 10 The axis of the mold 200 is set at an acute angle to the axis of the take-up roller 100. When the mold 200, on which the cylindrical film 3 is fitted, moves to the clearance space 130, the cylindrical film 3 abuts against one side of the take-up roller 100. Furthermore, the radial plane of the protrusion 110 is perpendicular to the axis of the take-up roller 100, that is, the protrusion 110 on the outer periphery of the take-up roller 100 has a straight tooth structure. Thus, there is an angle between the axis of the mold 200 and the radial plane of the protrusion 110, and the angle is not equal to zero. Thus, when the take-up roller 100 is rotated, while the cylindrical film 3 is rolled up, the rotation of the take-up roller 100 can also drive the mold 200 to continue moving forward, avoiding the need for an additional drive structure to drive the mold 200 to move along the axis of the take-up roller 100, which helps to simplify the structure of the take-up device.

[0071] In some embodiments of this application, the cross-section of the mold 200 is circular.

[0072] In one embodiment of this application, the winding device further includes a first driving mechanism (not shown in the figure), which is used to drive two winding rollers 100 to rotate in order to wind up the cylindrical film material.

[0073] It is worth understanding that the first driving mechanism may include a gear transmission mechanism, a belt transmission mechanism, or other mechanisms that can drive the take-up roller 100 to rotate, and no limitation is made here.

[0074] In some embodiments of this application, the winding device further includes a second driving mechanism for driving the die 200 to move along the axial direction (i.e., the X direction) of the winding roller 100.

[0075] In one possible implementation, the second drive mechanism includes a transmission chain connected to a mold base, on which the mold 200 is mounted. The mold 200 is driven to move along the X direction by driving the mold base to move.

[0076] In some embodiments of this application, the outer wall of the winding roller 100 and the contact surface of the mold 200 are provided with a smooth design, which can effectively reduce the situation where the cylindrical mold material is crushed due to uneven force during the winding process.

[0077] Furthermore, an angle limiter is provided inside the mold 200 to limit the rotation angle of the mold 200, so as to reduce the risk of wear and tear of the cylinder during each reverse acceleration rotation.

[0078] See Figures 10 to 13 Another embodiment of this application discloses a winding method applied to the winding apparatus described above. The winding method includes the following steps:

[0079] The cylindrical membrane material 3 is set on the mold 200, and the mold 200 can rotate around its own axis;

[0080] The cylindrical film 3 and the mold 200 move forward at a constant speed along the axial direction of the take-up roller 100, so that the cylindrical film 3 moves forward with the mold 200 to the clearance space 130. The outer wall surface of the take-up roller 100 abuts against the cylindrical film 3 on the mold 200. The two take-up rollers 100 rotate at a constant speed around their own axis and toward the direction in which the cylindrical film 3 is rolled up, so that the surface texture of the two take-up rollers 100 abuts against the cylindrical film 3 on the mold 200 in an alternating manner and drives the cylindrical film 3 to be rolled up.

[0081] The cylindrical membrane material 3 continues to move forward with the mold 200 until the mold 200 leaves the clearance space 130.

[0082] In one possible implementation, the rolling method of this application embodiment is applicable to the edge rolling process in the production of gloves by the dip-dipping method.

[0083] In one possible implementation, the winding method of this application embodiment is applicable to the edge rolling and winding process of condom products produced by the impregnation method.

[0084] In one possible implementation, the rolling method of this application embodiment is applicable to the edge rolling process of balloon products produced by the immersion method.

[0085] In one possible implementation, the winding method of this application embodiment is applicable to the edge rolling and winding process of finger sleeve products produced by the dip-dipping method.

[0086] Another aspect of this application discloses a cylindrical product processed using the winding method described above.

[0087] It is worth understanding that the cylindrical product in this embodiment may be processed using the aforementioned winding process method in one of the steps.

[0088] The tubular products in this application include, but are not limited to, gloves, condoms, and balloons. For example, a condom is a tubular product in this application embodiment. Figure 14 As shown.

[0089] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A winding device, characterized in that, include: Two take-up rollers are arranged side by side. Each take-up roller has a surface texture on its outer peripheral wall. There is a clearance space between the surface textures of the two take-up rollers for placing a mold. The surface textures on both sides of the mold mesh with each other and complement each other in the radial direction of the take-up rollers. A mold is disposed in the clearance space and is movable along the axial direction of the take-up roller, wherein the mold is used to place the workpiece to be taken up; The surface texture includes protrusions and depressions that are present on the outer peripheral wall of the take-up roller and are spaced apart along the axial direction of the take-up roller, wherein in the radial plane of the take-up roller, the protrusion of one take-up roller is opposite to the depression of another take-up roller. The two take-up rollers rotate in opposite directions, wherein the angle between the linear velocity direction of the contact point between the surface texture and the workpiece and the winding direction of the workpiece is θ, where 0° < θ < 90°. It also includes a mold base, wherein the mold is mounted on the central axis of the mold base and the mold is rotatable about the axis of the mold base itself.

2. The winding device according to claim 1, characterized in that, The radial plane of the protrusion is perpendicular to the axial direction of the take-up roller; or, the radial plane of the protrusion is set at an angle to the axial direction of the take-up roller.

3. The winding device according to claim 1, characterized in that, The protrusion is a continuous thread structure, wherein the thread structures on the outer peripheral walls of the two take-up rollers are arranged in opposite directions.

4. The winding device according to claim 1, characterized in that, The axis of the mold is set at an acute angle to the axis of the take-up roller.

5. The winding device according to claim 1 or 4, characterized in that, The mold has a circular cross-section.

6. A winding method, characterized in that, The winding method, applied to the winding apparatus according to any one of claims 1 to 5, comprises the following steps: The cylindrical membrane material is fitted onto the mold, and the mold can rotate around its own axis. The cylindrical film and the mold move at a constant speed along the axial direction of the take-up rollers, so that the cylindrical film moves forward with the mold to the clearance space. The two take-up rollers rotate at a constant speed in opposite directions around their own axes and toward the direction in which the cylindrical film is rolled up, so that the surface texture of the two take-up rollers abuts against the cylindrical film on the mold and drives the cylindrical film to be rolled up. The cylindrical membrane material continues to advance with the mold until the mold leaves the clearance space.

7. A cylindrical product, characterized in that, The cylindrical product is processed using at least the winding method described in claim 6.

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