A prepreg tape winder

Abstract

This utility model discloses a prepreg tape winding machine, including a machine body equipped with a winding roller, a tensioning wheel, and multiple guide wheels. An elastic outer support sleeve is rotatably mounted on the machine body, and the outer support sleeve is in rolling connection with the tape. An inner support sleeve is coaxially rotatably mounted on the inner side of the outer support sleeve, with the rotation direction of the inner support sleeve opposite to that of the outer support sleeve. The outer circumferential surface of the inner support sleeve is in contact with the inner circumferential surface of the outer support sleeve, and a guide bar is provided on the outer circumferential surface of the inner support sleeve. When the inner support sleeve rotates, the guide bar on it pushes the tape from the center to both sides along the width direction of the tape, thereby flattening the tape along the width direction, reducing wrinkles on the tape, and improving the winding quality of the prepreg tape. The elastic outer support sleeve supports and guides the tape forward, while also isolating the tape from the guide bar, reducing mutual wear between them, and ensuring the quality of the prepreg tape winding.

Description

Technical Field

[0001] This utility model belongs to the field of winding machine technology, and in particular relates to a prepreg tape winding machine. Background Technology

[0002] A winding machine is an automated device that winds continuous materials (such as metal strips, plastic films, paper, etc.) into regular rolls. It is widely used at the end of material processing production lines.

[0003] Patent CN209940049U discloses a flattening device for a winding machine, which eliminates wrinkles in the strip by setting flattening rollers. However, in the winding process of prepreg, the flattening effect is usually limited if only the smooth-surfaced flattening rollers are used. It cannot be effectively applied to flatten wrinkles in the width direction of the strip, which directly leads to a decrease in the winding quality of the strip and has a negative impact on subsequent processing and the performance of the final product.

[0004] Therefore, it is necessary to improve the existing winding machines. Utility Model Content

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide a prepreg tape winding machine to improve the winding quality of the tape.

[0006] To achieve the above objectives, the specific technical solution of the prepreg tape winding machine of this utility model is as follows: A prepreg tape winding machine includes a machine body equipped with a winding roller, a tensioning roller, and multiple guide rollers. The machine body is also equipped with a flattening roller. The flattening roller includes an elastic outer support sleeve rotatably mounted on the machine body. The outer support sleeve is in rolling connection with the tape. An inner support sleeve is coaxially rotatably mounted on the inner side of the outer support sleeve. The rotation direction of the inner support sleeve is opposite to that of the outer support sleeve. The outer circumferential surface of the inner support sleeve is in contact with the inner circumferential surface of the outer support sleeve, and a guide strip is provided on the outer circumferential surface of the inner support sleeve.

[0007] Preferably, there are two guide bar supports, which are spirally distributed from the middle to both ends along the axial direction of the inner support sleeve.

[0008] Preferably, the linear velocity of the outer support sleeve is the same as the moving speed of the strip, and the rotational speed of the inner support sleeve is greater than that of the outer support sleeve.

[0009] Preferably, the wrap angle between the strip and the outer support sleeve is greater than 10 degrees.

[0010] Preferably, the machine body is connected to a drive shaft via a bearing, and a drive motor that is connected to the drive shaft is installed inside the machine body. A fixed disk is fixedly connected to the drive shaft, and a movable disk is also provided on the drive shaft. The outer support sleeve is detachably disposed between the fixed disk and the movable disk.

[0011] Preferably, a mounting sleeve is fixedly connected to the movable disc, the mounting sleeve is coaxially sleeved on the outer periphery of the drive shaft, and a locking screw extending radially is threaded onto the mounting sleeve.

[0012] Preferably, both ends of the outer support sleeve are provided with flanged portions in the circumferential direction, and the opposite sides of the fixed plate and the movable plate are connected with clamping rings by bolt assemblies. The clamping rings are configured to clamp the flanged portions.

[0013] Preferably, the surface of the outer support sleeve is covered with a polytetrafluoroethylene lubricating layer.

[0014] Preferably, the inner support sleeve is connected to the drive shaft via a hub motor, and the drive shaft is also provided with a conductive slip ring that is electrically connected to the hub motor.

[0015] The prepreg tape winding machine of this utility model has the following advantages: When the inner support sleeve rotates, the guide bar on it pushes the tape from the middle to both sides along the width direction of the tape, thereby flattening the tape along the width direction, reducing wrinkles on the tape, and improving the winding quality of the prepreg tape; the elastic outer support sleeve is used to support and guide the tape forward, while realizing the isolation between the tape and the guide bar, reducing the mutual wear between the two, so as to ensure the winding quality of the prepreg tape. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the winding machine of this utility model; Figure 2 This is a schematic diagram of the connection structure between the winding machine and the strip of this utility model; Figure 3 This is a schematic diagram of the installation structure of the flattening wheel of this utility model; Figure 4 This is a schematic diagram of the structure of the flattening wheel of this utility model; Figure 5 This is an exploded view of the flattening wheel of this utility model; Figure 6 This is a schematic diagram of the structure of the inner support sleeve of this utility model; Explanation of markings in the diagram: 1. Machine body; 2. Flattening wheel; 101. Guide wheel; 102. Tensioning wheel; 103. Take-up roller; 201. Drive motor; 202. Conductive slip ring; 203. Outer support sleeve; 204. Movable disc; 205. Drive shaft; 206. Fixed disc; 207. Clamping ring; 208. Mounting sleeve; 209. Hub motor; 210. Inner support sleeve; 211. Guide bar. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0018] The terms "top surface," "bottom surface," and "full surface" are used with reference to the normal operating state of the winding machine and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model.

[0019] like Figure 1 , 2 As shown in Figure 5, a prepreg tape winding machine includes a body 1 with a winding roller 103, a tensioning roller 102 and a plurality of guide rollers 101. The body 1 is also provided with a flattening roller 2. The flattening roller 2 includes an elastic outer support sleeve 203 rotatably mounted on the body 1. The outer support sleeve 203 is in rolling connection with the tape. An inner support sleeve 210 is coaxially rotatably mounted on the inner side of the outer support sleeve 203. The rotation direction of the inner support sleeve 210 is opposite to that of the outer support sleeve 203. The outer peripheral surface of the inner support sleeve 210 is in contact with the inner peripheral surface of the outer support sleeve 203. A guide strip 211 is provided on the outer peripheral surface of the inner support sleeve 210.

[0020] The aforementioned winding machine is suitable for winding prepreg tape. It can flatten the tape along its width during the winding process to improve the winding quality. The machine body 1 is equipped with a tension wheel 102, a winding roller 103, and a flattening roller 2. The tension wheel 102 is used to maintain a constant tension in the tape during the winding process. The winding roller 103 is used to wind the slit tape. The machine body 1 is also equipped with multiple guide wheels 101, which are used to support and guide the forward direction of the tape. The flattening roller 2 flattens the tape along its width, thereby reducing wrinkles and improving the winding quality.

[0021] The working principle of the flattening wheel 2 is as follows: the linear velocity direction of the outer support sleeve 203 is consistent with the forward direction of the strip, and the speeds are the same, thus the outer support sleeve 203 provides support and guidance for the strip; the specific arrangement of the guide strip 211 on the inner support sleeve 210 is as follows... Figure 6As shown, there are two guide bars 211, which are spirally distributed from the middle to both ends along the axial direction of the inner support sleeve 210. Since the outer support sleeve 203 is elastic, when the inner circumferential surface of the outer support sleeve 203 is in contact with the outer circumferential surface of the inner support sleeve 210, the guide bars 211 will support the outer support sleeve 203, so that the outer circumferential surface of the outer support sleeve 203 forms a spiral protrusion corresponding to the guide bars 211. When the inner support sleeve 210 rotates, the strip can be pushed from the middle to both ends of the inner support sleeve 210 through the guide bars 211, thereby flattening the strip along its width direction, reducing wrinkles on the strip and improving the winding quality of the strip.

[0022] Compared with the smooth-surfaced flattening roller 2 in the prior art, by setting two guide bars 211 that extend spirally along the inner support sleeve 201, the guide bars 201 can generate a continuous lateral force from the center to both sides on the strip during the rotation of the inner support sleeve 210, thereby flattening the strip along its own width direction through the force; and a flexible outer support sleeve 203 is set to isolate the inner support sleeve 210 from the strip, so as to reduce the wear between the strip and the inner support sleeve 210 and further improve the quality of strip winding.

[0023] Further improvements include: the linear velocity of the outer support sleeve 203 is consistent with the moving speed of the strip; the rotational speed of the inner support sleeve 210 is greater than that of the outer support sleeve 203; and the wrap angle between the strip and the outer support sleeve 203 is greater than 90 degrees. The consistent linear velocity and direction of the outer support sleeve 203 and the strip reduce relative slippage between them, mitigating wear. The greater rotational speed of the inner support sleeve 210 allows relative movement between it and the strip, enabling the guide bar 211 to apply a lateral force to the strip more quickly, resulting in better strip flattening. The larger wrap angle between the strip and the outer support sleeve 203 increases the contact area, improving the stability of the connection and the range of force applied by the guide bar 211, further enhancing the flattening effect and ultimately improving the winding effect.

[0024] Further improvements include, for example Figure 3-5 As shown, the machine body 1 is connected to a drive shaft 205 via a bearing. Inside the machine body 1, there is a drive motor 201 that is connected to the drive shaft 205. A fixed disk 206 is fixedly connected to the drive shaft 205. A movable disk 204 is also provided on the drive shaft 205. An outer support sleeve 203 is detachably disposed between the fixed disk 206 and the movable disk 204.

[0025] In the aforementioned winding machine, both the fixed disk 206 and the movable disk 204 are set perpendicular to the drive shaft 205. The fixed disk 206 and the movable disk 204 fix the two ends of the outer support sleeve 203 respectively, thereby realizing the fixed installation of the outer support sleeve 203 on the drive shaft 205. Then, the drive motor 201 drives the drive shaft 205 to rotate, and finally drives the outer support sleeve 203 to rotate.

[0026] The specific installation method of the movable plate 204 and the drive shaft 205 is as follows: Figure 5 As shown, a mounting sleeve 208 is fixedly connected to the movable disc 204. The mounting sleeve 208 is coaxially sleeved on the outer periphery of the drive shaft 205. A locking screw extending radially is threaded onto the mounting sleeve 208. The locking screw is used to connect and disconnect the mounting sleeve 208 from the drive shaft 205. The inner diameter of the mounting sleeve 208 is the same as the outer diameter of the drive shaft 205, allowing them to limit each other and enabling the mounting sleeve 208 to slide along the drive shaft 205. This allows adjustment of the mounting position of the movable disc 204 on the drive shaft 205, i.e., adjustment of the distance between the movable disc 204 and the fixed disc 206, to facilitate the installation of outer support sleeves 203 of different widths between them, thereby adapting to strips of different widths.

[0027] The specific connection method between the outer support sleeve 203 and the fixed plate 206 and the movable plate 204 is as follows: Figure 5 As shown, both ends of the outer support sleeve 203 are circumferentially provided with flanged portions. The opposite sides of the fixed plate 206 and the movable plate 204 are each connected to a clamping ring 207 via a bolt assembly. The clamping ring 207 is configured to clamp the flanged portions. The bolt assembly specifically includes a nut and a stud fixedly mounted on the clamping ring 207. Mounting holes are provided on the flanged portions, the fixed plate 206, and the movable plate 204. During installation, the stud passes through the mounting hole and is then fixed with the nut, thereby achieving the fixed installation of the clamping ring 207 on the fixed plate 206 and the movable plate 204. The clamping ring 207 clamps and fixes the flanged portions to the fixed plate 206 and the movable plate 204, thus achieving a fixed installation connection between the outer support sleeve 203 and the fixed plate 206 and the movable plate 204, improving the ease of disassembly and replacement of the outer support sleeve 203.

[0028] A further improvement is that the surface of the outer support sleeve 203 is covered with a polytetrafluoroethylene (PTFE) lubricating layer. PTFE has excellent lubrication properties. By providing a lubricating layer on the inner and outer circumferential surfaces of the outer support sleeve 203, the mutual wear between the inner support sleeve 210 and guide bar 211 and the outer support sleeve 203 can be reduced, extending the service life of the equipment. Furthermore, it can prevent the prepreg tape from sticking to the outer support sleeve 203, which is beneficial for improving the winding effect of the prepreg tape.

[0029] Further improvements include, for example Figure 5 and6 As shown, the inner support sleeve 210 is connected to the drive shaft 205 via a hub motor 209. A conductive slip ring 202, electrically connected to the hub motor 209, is also provided on the drive shaft 205. The hub motor 209 is used to independently drive the inner support sleeve 210 to rotate, and the conductive slip ring 202 is used to supply power to the hub motor 209. The conductive slip ring 202 provides a stable power supply and control signal to the hub motor 209, while avoiding the tangling and breakage caused by rotation in traditional wire connections.

[0030] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this utility model.

Claims

1. A prepreg tape winding machine, comprising a body (1) equipped with a winding roller (103), a tensioning roller (102) and a plurality of guide rollers (101), characterized in that: The machine body (1) is also provided with a flattening wheel (2). The flattening wheel (2) includes an elastic outer support sleeve (203) rotatably mounted on the machine body (1). The outer support sleeve (203) is rotatably connected to the strip. An inner support sleeve (210) is rotatably mounted on the inner side of the outer support sleeve (203). The rotation direction of the inner support sleeve (210) is opposite to the rotation direction of the outer support sleeve (203). The outer peripheral surface of the inner support sleeve (210) is in contact with the inner peripheral surface of the outer support sleeve (203). A guide strip (211) is provided on the outer peripheral surface of the inner support sleeve (210).

2. The prepreg tape winding machine according to claim 1, characterized in that, The guide bar (211) is provided in two pairs and is spirally distributed from the middle part to both ends along the axial direction of the inner support sleeve (210).

3. The prepreg tape winding machine according to claim 2, characterized in that, The linear velocity of the outer support sleeve (203) is the same as the moving speed of the strip, and the rotational speed of the inner support sleeve (210) is greater than the rotational speed of the outer support sleeve (203).

4. The prepreg tape winding machine according to claim 2, characterized in that, The wrap angle between the strip and the outer support sleeve (203) is greater than 90 degrees.

5. The prepreg tape winding machine according to claim 1, characterized in that, The body (1) is connected to a drive shaft (205) via a bearing. The body (1) is equipped with a drive motor (201) that is connected to the drive shaft (205). A fixed disk (206) is fixedly connected to the drive shaft (205). A movable disk (204) is also provided on the drive shaft (205). The outer support sleeve (203) is detachably disposed between the fixed disk (206) and the movable disk (204).

6. The prepreg tape winding machine according to claim 5, characterized in that, An mounting sleeve (208) is fixedly connected to the movable disc (204). The mounting sleeve (208) is coaxially sleeved on the outer periphery of the drive shaft (205). A locking screw extending radially is threaded onto the mounting sleeve (208).

7. The prepreg tape winding machine according to claim 5, characterized in that, Both ends of the outer support sleeve (203) are provided with flanged portions in the circumferential direction. The opposite sides of the fixed plate (206) and the movable plate (204) are connected with clamping rings (207) by bolt assemblies. The clamping rings (207) are configured to clamp the flanged portions.

8. The prepreg tape winding machine according to claim 1, characterized in that, The surface of the outer support sleeve (203) is covered with a polytetrafluoroethylene lubricating layer.

9. The prepreg tape winding machine according to claim 5, characterized in that, The inner support sleeve (210) is connected to the drive shaft (205) via a hub motor (209), and the drive shaft (205) is also provided with a conductive slip ring (202) that is electrically connected to the hub motor (209).

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