A winding machine carbon fiber yarn bobbin expanding device

Abstract

The utility model discloses a kind of winding machine carbon fiber yarn barrel expansion devices, including the central shaft being arranged in winding machine carbon fiber yarn barrel, the shaft connecting seat being connected with output shaft is equipped in the front end of central shaft, expansion assembly is equipped in the middle part of central shaft, the rear end of central shaft is hinged with locking driving block by pin shaft;Expansion assembly includes several connecting rods, the front end of each connecting rod is fixedly connected with the front pressure block of being sleeved on central shaft, the rear end of each connecting rod is fixedly connected with the rear pressure block of being arranged in the rear end of central shaft by passing through the rear fixed block of being fixed on central shaft, rubber ring that is expanded with winding machine carbon fiber yarn barrel is equipped between rear pressure block and rear fixed block, between front pressure block and shaft connecting seat.The utility model is expanded by being equipped by rubber ring and connecting rod and constitutes expansion assembly, structure is simple, light in weight, by the extrusion effect of front pressure block, rear pressure block, realize the radial dimension of rubber ring is expanded to be larger by being extruded axially, front pressure block, rear pressure block are sleeved on central shaft, installation and maintenance are convenient.

Description

Technical Field

[0001] This utility model belongs to the field of textile machinery manufacturing technology, and specifically relates to a carbon fiber yarn bobbin tensioning device for a winding machine. Background Technology

[0002] A winding machine is a device that winds carbon fiber or other fibers onto a mandrel. The carbon fiber is pulled out from the unwinding assembly of the yarn rack and wound onto the surface of the mandrel through the impregnation tank and the winding nozzle. During the winding process, the carbon fiber bundle needs to maintain a certain tension. Therefore, the yarn bobbin needs to be firmly fixed on the rotating shaft to prevent relative slippage, and the yarn bobbin needs to be easy to replace.

[0003] Commonly used yarn bobbin tensioning devices include rotary hand-operated tensioning shafts and compressed air tensioning shafts. However, these shafts are relatively heavy, consume a portion of the motor power, have complex internal structures, are difficult to maintain, and are costly. Air tensioning shafts also require an additional air source. A single winding machine needs a dozen or more tensioning shafts, resulting in significant material costs. Therefore, developing a lightweight, low-cost tensioning shaft can reduce costs and increase company profits. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a reasonably designed, lightweight, and low-cost carbon fiber yarn bobbin tightening device for winding machines, which addresses the shortcomings of existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A carbon fiber yarn bobbin expansion device for a winding machine is characterized in that the device includes a central shaft inserted into the carbon fiber yarn bobbin of the winding machine, a shaft connecting seat at the front end of the central shaft that is connected to the output shaft, an expansion component in the middle of the central shaft that expands and engages with the inner wall of the carbon fiber yarn bobbin of the winding machine, and a locking drive block at the rear end of the central shaft that is hinged by a pin to facilitate axial compression of the expansion component to expand its radial dimension. The tensioning assembly includes several connecting rods evenly arranged circumferentially along the central axis. Each connecting rod is parallel to the central axis. The front end of each connecting rod is fixedly connected to the front pressure block sleeved on the central axis. The rear end of each connecting rod passes through the rear fixing block fixed on the central axis and is fixedly connected to the rear pressure block sleeved on the rear end of the central axis. Rubber rings that are in tensioning fit with the carbon fiber yarn bobbin of the winding machine are provided between the rear pressure block and the rear fixing block, and between the front pressure block and the shaft connecting seat.

[0006] The technical problem to be solved by this utility model can also be achieved by the following technical solution: a positioning groove for fixing the rubber ring is provided on the opposite surface of the rear pressure block and the rear fixing block, and on the opposite surface of the front pressure block and the shaft connecting seat.

[0007] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the rubber ring is provided with an annular ring body, and an annular notch for providing expansion space is provided on the side of the annular ring body facing the carbon fiber yarn cylinder of the winding machine.

[0008] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the locking drive block is provided with a socket for the insertion of the central shaft, the depth of the socket is greater than the expansion stroke, the front end of the socket is provided with a central shaft inlet, and the rear end of the socket is provided with an exhaust hole.

[0009] The technical problem to be solved by this utility model can also be achieved by the following technical solution: a boss for fixing the carbon fiber yarn cylinder of the winding machine is provided on the shaft connecting seat.

[0010] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the locking drive block is provided with an eccentric block body, and an arc-shaped part for pressing and fixing the block is provided on one side of the eccentric block body.

[0011] The technical problem to be solved by this utility model can also be achieved by the following technical solution: a pad with a protective and buffering function is provided on the side of the rear fixing block that cooperates with the locking drive block.

[0012] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the rear fixing block is fixed on the central shaft by a set bolt, and the set bolt is screwed into the tapered hole of the central shaft to prevent the expansion assembly from rotating around the central shaft.

[0013] Compared with existing technologies, this utility model features a simple and lightweight expansion assembly consisting of a rubber ring and a connecting rod, achieving weight reduction. Through the compression action of the connecting rod, front pressure block, and rear pressure block, the rubber ring is axially compressed, causing radial expansion. The expansion method is simple, and the front and rear pressure blocks are fitted onto the central shaft, making installation and maintenance convenient. This device effectively meets the yarn bobbin expansion requirements in winding machine production, and its lightweight design reduces the motor load. Compared to an integrated expansion shaft, it has lower costs and allows for quick and easy yarn replacement. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the carbon fiber yarn bobbin tensioning device for the winding machine described in this utility model; Figure 2 for Figure 1 Sectional view along axis AA; Figure 3 for Figure 1 Usage status diagram.

[0015] In the diagram: 1-shaft connecting seat, 2-rubber ring, 3-front pressure block, 4-connecting rod, 5-central shaft, 6-rear fixing block, 7-rear pressure block, 8-shield, 9-pin, 10-locking drive block, 11-bore, 12-through hole, 13-output shaft, 14-yarn bobbin, 15-annular notch, 16-set screw. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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 utility model 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 utility model.

[0018] Reference Figures 1-3 A carbon fiber yarn bobbin expansion device for a winding machine includes a central shaft 5 inserted into a carbon fiber yarn bobbin 14 of the winding machine. The front end of the central shaft 5 is provided with a shaft connecting seat 1 connected to an output shaft 13. The middle part of the central shaft 5 is provided with an expansion component that expands and engages with the inner wall of the carbon fiber yarn bobbin 14 of the winding machine. The rear end of the central shaft 5 is hinged to a locking drive block 10 via a pin 9 to facilitate axial compression of the expansion component and increase its radial dimension. The tensioning assembly includes several connecting rods 4 evenly arranged circumferentially along the central axis 5. Each connecting rod 4 is parallel to the central axis 5. The front end of each connecting rod 4 is fixedly connected to the front pressure block 3 sleeved on the central axis 5. The rear end of each connecting rod 4 passes through the rear fixing block 6 fixed on the central axis 5 and is fixedly connected to the rear pressure block 7 located at the rear end of the central axis 5. The rear fixing block 5 is provided with a through hole 12 for the central axis to pass through. The rear fixing block 7 is fixed on the central axis 5 by a set screw 16. A rubber ring 2 is provided between the rear pressure block 7 and the rear fixing block 6, and between the front pressure block 3 and the shaft connecting seat 1, to engage with the tensioning of the carbon fiber yarn bobbin of the winding machine. A gasket 8 is provided on the side of the rear fixing block 6 that engages with the locking drive block 10.

[0019] A positioning groove for fixing the rubber ring is provided on the opposite surface of the rear pressure block 7 and the rear fixing block 6, and on the opposite surface of the front pressure block 3 and the shaft connecting seat 1.

[0020] The rubber ring has a circular ring body, and an annular notch 15 for providing expansion space is provided on the side of the circular ring body facing the carbon fiber yarn bobbin of the winding machine.

[0021] The locking drive block 10 is provided with a socket for inserting the central shaft. The depth of the socket is greater than the tightening stroke. The front end of the socket is provided with a central shaft inlet, and the rear end of the socket is provided with an exhaust hole.

[0022] The shaft connecting seat 1 is provided with a boss 11 for fixing the carbon fiber yarn bobbin of the winding machine.

[0023] The locking drive block 10 is provided with an eccentric block, and one side of the eccentric block is provided with an arc-shaped part for pressing and fixing the block.

[0024] The working process of the carbon fiber yarn bobbin tightening device for winding machines described in this utility model is as follows: After all parts are assembled, the locking drive block 10 is in the position shown in the figure, and the rubber ring 2 is in an uncompressed state. The yarn bobbin is inserted from the right end face and pushed against the boss 11 of the shaft connecting seat 1. A pry bar is inserted into the bottom round hole of the locking drive block 10, and the locking drive block 10 is turned towards another inclined surface. Because the locking drive block has an eccentric structure, the distance from the inclined surface to the center of the pin 9 increases, pushing the rear pressure block 7 to move to the left. The rear pressure block 7 is connected to the front pressure block 3 through the connecting rod 4. The two rubber rings 2 are axially compressed due to the movement of the pressure blocks, and their radial dimensions expand, thereby achieving the purpose of tightening the yarn bobbin. This tightening device has the advantages of simple structure, low cost, light weight, and convenient installation and maintenance, ensuring the usage requirements during the winding process of the winding machine.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A carbon fiber yarn bobbin expansion and tightening device for a winding machine, characterized in that, The device includes a central shaft inserted into the carbon fiber yarn tube of the winding machine. The front end of the central shaft is provided with a shaft connection seat that connects to the output shaft. The middle part of the central shaft is provided with an expansion assembly that expands and engages with the inner wall of the carbon fiber yarn tube of the winding machine. The rear end of the central shaft is hinged to a locking drive block by a pin, which facilitates axial compression of the expansion assembly to expand its radial dimension. The tensioning assembly includes several connecting rods evenly arranged circumferentially along the central axis. Each connecting rod is parallel to the central axis. The front end of each connecting rod is fixedly connected to the front pressure block sleeved on the central axis. The rear end of each connecting rod passes through the rear fixing block fixed on the central axis and is fixedly connected to the rear pressure block sleeved on the rear end of the central axis. Rubber rings that are in tensioning fit with the carbon fiber yarn bobbin of the winding machine are provided between the rear pressure block and the rear fixing block, and between the front pressure block and the shaft connecting seat.

2. The carbon fiber yarn bobbin tightening device for a winding machine according to claim 1, characterized in that, A positioning groove for fixing the rubber ring is provided on the opposite surface of the rear pressure block and the rear fixing block, and on the opposite surface of the front pressure block and the shaft connecting seat.

3. The carbon fiber yarn bobbin tightening device for a winding machine according to claim 1, characterized in that, The rubber ring has a circular ring body, and an annular notch is provided on the side of the circular ring body facing the carbon fiber yarn bobbin of the winding machine to provide expansion space.

4. The carbon fiber yarn bobbin tightening device for a winding machine according to claim 1, characterized in that, The locking drive block is provided with a socket for inserting the central shaft. The depth of the socket is greater than the tightening stroke. The front end of the socket is provided with a central shaft inlet, and the rear end of the socket is provided with an exhaust hole.

5. The carbon fiber yarn bobbin tightening device for a winding machine according to claim 1, characterized in that, The shaft connecting seat is provided with a boss for fixing the carbon fiber yarn bobbin of the winding machine.

6. The carbon fiber yarn bobbin tightening device for a winding machine according to claim 1, characterized in that, The locking drive block is provided with an eccentric block, and one side of the eccentric block is provided with an arc-shaped part for pressing and fixing the block.

7. The carbon fiber yarn bobbin tightening device for a winding machine according to claim 1, characterized in that, A gasket is provided on the side of the rear fixing block that mates with the locking drive block.

8. The carbon fiber yarn bobbin tightening device for a winding machine according to claim 1, characterized in that, The rear fixing block is fixed to the central shaft by set bolts.

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