Carbon fiber sizing and glue squeezing device and carbon fiber production equipment

Abstract

The utility model relates to the technical field of carbon fiber production, in particular to a carbon fiber sizing and glue squeezing device and carbon fiber production equipment. The carbon fiber sizing and glue squeezing device comprises a sizing tank, a glue squeezing device and a glue squeezing device, the driving roller is of a cylindrical structure, the outer wall of the driving roller in the circumferential direction abuts against the fibers, and the driving roller rotates to drive the fibers to penetrate through the sizing agent in the sizing tank; the glue extruding device is arranged on the outlet side of the sizing tank and comprises a driving device and an extruding part, the driving device is provided with a driving end moving towards the driving roller, the extruding part is connected with the driving end, the extruding part is of a plate-shaped structure, and the driving end drives the extruding part to press the driving roller so as to extrude redundant sizing agents on the fibers. According to the utility model, the acting force applied by the extrusion piece relative to the fiber surface can be accurately controlled, so that the index of the sizing amount of a product is controllable, and unnecessary friction with the fiber contact surface can be effectively reduced, thereby ensuring the sizing amount to be uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber production, in particular to a carbon fiber sizing and extruding device and carbon fiber production equipment. Background Art

[0002] Sizing is the last key process after the carbon fiber is surface treated and before it is wound. The main function of sizing is to bundle the carbon fiber, reduce the friction between the carbon fibers, and reduce the wear on the fiber surface during the subsequent winding, packaging, and transportation processes. By sizing the carbon fiber, a protective layer will be formed on the carbon fiber surface. The surface of each bundle of carbon fiber has a certain glossiness, which can improve the chemical bonding between the carbon fiber and the resin and improve the interface properties of the composite material. At the same time, it can also improve the wetting properties of the carbon fiber, facilitate resin infiltration, reduce the preparation time of the composite material, and improve the quality of the composite material. Therefore, different sizing agents and sizing processes in the carbon fiber production process have an important influence on the mechanical properties, processing performance and mechanics of the carbon fiber.

[0003] The sizing process in carbon fiber production generally uses the dipping method to size the fibers. The sizing agent is generally a specially modified epoxy polymer emulsion. After a reasonable ratio of deionized water and stock solution, the sizing agent is placed in the sizing tank. The sizing time is controlled by the dipping length, speed, etc., and a glue squeezing device is set at the outlet of the sizing tank to control the fiber sizing amount. It is then dried by hot air to remove the solvent or moisture in the fiber, and finally rolled, tested, packaged and stored. The concentration of the sizing agent in the sizing tank determines the sizing amount of the carbon fiber product, and the particle size and distribution of the sizing agent, the dipping time, the fiber tension, etc. will also affect the sizing amount of the product. The higher the sizing agent concentration, the greater the sizing amount of the carbon fiber product, so the concentration in the sizing tank, the dipping time, the glue squeezing effect, etc. all have an important impact on the sizing amount index of the product.

[0004] Currently, all manufacturers use "press roller squeezing" or "sponge squeezing" to control the sizing on the surface of impregnated fibers. The "press roller squeezing" method is to squeeze the fibers through two relatively rotating guide rails. However, due to the gap between the two guide rollers due to processing accuracy, the overall squeezing of fibers of a certain width will be uneven, and eventually individual fibers will have uneven sizing. At the same time, due to the viscosity of the sizing agent, fine fibers will adhere to the guide rollers as the two guide rollers rotate during long production runs. If not cleaned in time, roller entanglement accidents are likely to occur, which will have a certain impact on product quality and production operations. The "sponge squeezing" method is to pass the impregnated fibers through the middle of two layers of sponge to achieve the effect of squeezing and also achieve the purpose of scraping the fiber surface. However, the pressure between the two layers of sponge is controlled by manually locking screws, which has low precision and can easily result in high pressure on one side and low pressure on the other side, resulting in uneven squeezing of the fibers overall, and ultimately causing large fluctuations in the product sizing amount. At the same time, as the production operation time increases, the hair fibers accumulated between the two layers of sponge will increase, and manual cleaning is required regularly. There are disadvantages such as frequent cleaning cycles and long cleaning time. The sponge clamps need to be opened and tightened manually before and after each cleaning, which is not only time-consuming and labor-intensive, but also causes the fibers after sizing during this period to not be squeezed out of glue, and ultimately causes the risk of high sizing indicators on the product. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a carbon fiber sizing and extruding device and carbon fiber production equipment to solve the problem that the "roller extrusion" and "sponge extrusion" methods in the existing sizing process have uneven extrusion, thereby affecting the sizing amount and affecting the production quality of the fiber.

[0006] The first aspect of the present invention provides a carbon fiber sizing and extruding device, wherein the carbon fiber sizing and extruding device comprises:

[0007] a sizing tank containing sizing agent;

[0008] a driving roller formed into a cylindrical structure and having an outer wall in a circumferential direction in contact with the fiber, wherein the driving roller rotates to drive the fiber to pass through the sizing agent in the sizing tank;

[0009] A glue squeezing device is arranged at the outlet side of the sizing tank, and the glue squeezing device includes a driving device and an extruding member. The driving device has a driving end that moves toward a driving roller, and the extruding member is connected to the driving end. The extruding member is formed into a plate-like structure, and the driving end drives the extruding member to press toward the driving roller to squeeze out excess sizing agent on the fiber.

[0010] Preferably, the carbon fiber sizing and extruding device further comprises:

[0011] A support member is provided on the outside of the sizing trough, and the main body of the driving device is hinged to the support member;

[0012] a connecting member, hinged to the supporting member and the extruding member respectively;

[0013] The angle between the plane where the extrusion piece is located and the driving roller is adjustable.

[0014] Preferably, the driving device is formed as a telescopic structure, and the length of the driving end extending from the main body of the driving device is adjustable to adjust the distance between the extruding member and the driving roller.

[0015] Preferably, a side of the extrusion member facing the driving roller is formed as an extrusion portion, and the driving end is fixedly connected to a side facing away from the extrusion portion.

[0016] Preferably, the carbon fiber sizing and extruding device further comprises:

[0017] A protective member is provided on a side of the extruding member facing the driving roller, so that the fibers abut against the protective member, and the protective member is flexible.

[0018] Preferably, the protective element is made of velvet.

[0019] Preferably, the drive device is formed as a pneumatic drive mechanism;

[0020] The driving device comprises:

[0021] Air supply parts;

[0022] a cylinder, connected to the air supply member via a pipeline;

[0023] A control valve is provided on the pipeline and is used to adjust the angle between the plane where the extrusion piece is located and the driving roller, thereby adjusting the extrusion pressure on the fiber.

[0024] Preferably, the driving device further comprises:

[0025] a pressure regulating valve, arranged on the pipeline;

[0026] The pressure detecting component is arranged on the pipeline and downstream of the pressure regulating valve.

[0027] Preferably, the driving device further comprises:

[0028] A silencer is connected to the control valve.

[0029] A second aspect of the present invention provides a carbon fiber production device, comprising the carbon fiber sizing and extruding device described in any one of the above technical solutions.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] The carbon fiber sizing and extruding device of the utility model drives the extrusion part to press the driving roller by the driving end of the driving device, so that the force applied by the extrusion part relative to the fiber surface can be accurately controlled, so that the sizing amount of the product can be controlled, and the plate-shaped extrusion part can effectively reduce unnecessary friction with the fiber contact surface, thereby ensuring uniform sizing amount, thereby improving the quality of products produced by carbon fiber production equipment.

[0032] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A schematic structural diagram of a carbon fiber sizing and extruding device provided in an embodiment of the present utility model;

[0035] Figure 2 A schematic structural diagram of the carbon fiber sizing and extruding device provided by an embodiment of the present utility model from another perspective;

[0036] Figure 3 This is a control principle diagram of the drive device in the carbon fiber sizing and extruding device provided in an embodiment of the utility model.

[0037] Icons: 10-sizing trough; 20-driving roller; 30-glue extrusion device; 31-driving device; 32-driving end; 33-extrusion part; 40-support part; 50-connecting part; 100-fiber; 101-control valve; 102-pressure regulating valve; 103-pressure detection part; 104-auxiliary pressure detection part; 105-silencer. DETAILED DESCRIPTION

[0038] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent upon understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein. Rather, except for operations that must occur in a particular order, changes may be made that will be apparent upon understanding the disclosure of this application. Furthermore, descriptions of features known in the art may be omitted for clarity and brevity.

[0039] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0040] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, it may be directly “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on,” “directly connected to,” “directly coupled to,” “directly over,” or “directly covering” another element, there may be no other elements intervening therebetween.

[0041] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0042] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are used only to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, a first member, component, region, layer, or portion in the examples described herein may also be referred to as a second member, component, region, layer, or portion without departing from the teachings of the examples.

[0043] For ease of description, spatial relational terms such as "above," "upper," "below," and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element would subsequently be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientations "above" and "below," depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0044] The terms used herein are intended only to describe various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular is intended to include the plural. The terms "comprise," "include," and "have" list the presence of stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0045] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include changes in shapes that occur during manufacturing.

[0046] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0047] According to a first aspect of the present invention, a carbon fiber sizing and extruding device is provided, which includes a sizing tank 10 , a driving roller 20 and an extruding device 30 .

[0048] Hereinafter, the specific structures of the above components of the carbon fiber sizing and squeezing device 30 according to this embodiment will be described.

[0049] like Figure 1 and Figure 2 As shown, the interior of the sizing tank 10 is filled with sizing agent, the driving roller 20 is formed into a cylindrical structure and the outer wall in the circumferential direction abuts against the fiber 100, and the driving roller 20 rotates to drive the fiber 100 to pass through the sizing agent in the sizing tank 10, thereby achieving sizing of the fiber 100.

[0050] In this embodiment, the sizing tank 10 is formed as a rectangular trough structure with an open top. However, the structure of the sizing tank 10 is not limited thereto, as long as the sizing tank 10 has the ability to contain sizing agent to achieve sizing of the fiber 100 .

[0051] In this embodiment, the glue squeezing device 30 is arranged at the outlet side of the sizing tank 10, so that after the fiber 100 is immersed in and adhered with the sizing agent, the excess sizing agent on the fiber 100 is squeezed out. Figure 1 The direction indicated by the arrow in FIG. 1 is the moving direction of the fiber 100. It should be further explained that the outlet side of the sizing tank 10 is the side from which the fiber 100 leaves the sizing tank 10.

[0052] Specifically, the glue extrusion device 30 includes a driving device 31 and an extrusion member 33. The driving device 31 has a driving end 32 that moves toward the driving roller 20. The extrusion member 33 is connected to the driving end 32. The extrusion member 33 is formed into a plate-like structure. The driving end 32 drives the extrusion member 33 to press toward the driving roller 20 to squeeze out excess sizing agent on the fiber 100. In this way, the driving device 31 drives the extrusion member 33 to move toward the driving roller 20 to achieve precise control of the force applied by the extrusion member 33 relative to the surface of the fiber 100, so that the sizing amount of the product can be controlled. In addition, the plate-like structure of the extrusion member 33 can effectively reduce unnecessary friction with the contact surface of the fiber 100, thereby ensuring uniform sizing.

[0053] In a preferred embodiment, Figure 1 and Figure 2 As shown, the extrusion member 33 is formed into a strip-shaped plate structure and extends along the axial direction of the driving roller 20, so that the driving end 32 can drive the extrusion member 33 to move, ensuring that the gap between the extrusion member 33 and the driving roller 20 is equal. Figure 1 and Figure 2 As shown, the driving device 31 is preferably provided with multiple groups, and the multiple groups of driving devices 31 are arranged at intervals along the length direction of the extrusion member 33, so that the multiple groups of driving devices 31 synchronously drive the extrusion member 33 to move, so as to ensure the stability of the extrusion member 33 during the movement, and also to improve the reliability of the equal gap between the extrusion member 33 and the driving roller 20 at all locations.

[0054] In this embodiment, the extrusion member 33 may be made of a light steel keel material to reduce the load on the driving end 32 .

[0055] More specifically, in this embodiment, if Figure 1 and Figure 2As shown, the driving device 31 is formed as a telescopic structure. For example, the driving device 31 can be a telescopic motor or a telescopic cylinder, so that the length of the driving end 32 extending out of the main body of the driving device 31 is adjustable to adjust the distance between the extrusion member 33 and the driving roller 20, thereby facilitating precise control of the force applied by the extrusion member 33 to the surface of the fiber 100, so that the sizing amount of the product can be controlled.

[0056] In a preferred embodiment, Figure 1 and Figure 2 As shown, the side of the extrusion member 33 facing the driving roller 20 is formed as an extrusion portion, and the extrusion portion is formed as a planar structure. The driving end 32 is fixedly connected to the side facing away from the extrusion portion, thereby ensuring a stable connection between the extrusion and the driving end 32, thereby ensuring that the driving device 31 drives the extrusion member 33 to move reliably.

[0057] Furthermore, in this embodiment, Figure 1 and Figure 2 As shown, the carbon fiber sizing and extruding device 30 also includes a support member 40 and a connecting member 50. The support member 40 is formed into a bracket structure and is arranged on the outside of the sizing tank 10. For example, the support member 40 is formed into a frame structure with a top and a side. The main body of the driving device 31 is hinged to the support member 40. The connecting member 50 is formed into a rod-shaped structure, and its two ends in the length direction are hinged to the support member 40 and the extrusion member 33 respectively. The driving device 31 and the connecting member 50 can also be installed on the side of the top of the support member 40 facing the sizing tank 10, so that the angle between the plane where the extrusion member 33 is located and the driving roller 20 is adjustable, thereby facilitating the adjustment of the distance between the extrusion member 33 and the outer wall of the driving roller 20, further improving the accuracy of controlling the force applied by the extrusion member 33 relative to the surface of the fiber 100, and meeting the sizing amount requirement of the fiber 100.

[0058] In a preferred embodiment, the carbon fiber sizing and extruding device 30 also includes a protective member arranged on the side of the extrusion member 33 facing the driving roller 20, so that the fiber 100 abuts against the protective member. The protective member is flexible, thereby reducing the friction between the extrusion member 33 and the surface of the fiber 100 and reducing the generation of hair.

[0059] In this embodiment, the protective member is detachably connected to the extrusion member 33 to facilitate replacement of the protective member. The protective member is preferably a multi-layer stacked structure, which can be replaced during production and improve production efficiency.

[0060] Furthermore, in this embodiment, the protective member is made of velvet, which can effectively clean the hair attached to the surface of the fiber 100, reduce unnecessary friction on the fiber 100, and reduce the generation of excess hair.

[0061] In a preferred embodiment, Figures 1 to 3As shown, the driving device 31 is formed as a pneumatic driving mechanism, so that the driving end 32 can instantly realize the lifting and pressing actions, so that it can be reset in the first time when cleaning the hair, which greatly avoids the situation where the un-extruded fiber 100 enters the second collection process and causes the product to have a high sizing amount.

[0062] Specifically, if Figures 1 to 3 As shown, the drive device 31 includes an air supply member, a cylinder, and a control valve 101. The telescopic rod of the cylinder is the drive end 32 in this embodiment. The air supply member can be a compressed gas supply device, such as an air pump or gas tank. The cylinder and the air supply member are connected via a pipeline, allowing the air supply member to output compressed air to the cylinder. The control valve 101 is provided on the pipeline and is used to adjust the angle between the plane of the extrusion member 33 and the drive roller 20, thereby adjusting the pressure of the plastic extrusion on the fiber 100. In this embodiment, the control valve 101 is a manual reversing valve to facilitate operation by production personnel; in other optional embodiments, the control valve 101 is a solenoid valve.

[0063] Furthermore, in this embodiment, the drive device 31 also includes a pressure regulating valve 102 and a pressure detection element 103. The pressure regulating valve 102 is disposed on the pipeline, specifically upstream of the control valve 101. The pressure regulating valve 102 is a precision pressure regulating valve 102, which allows the compressed air pressure to be adjusted between 0 and 6 bar. The pressure regulating valve 102 ensures that the distance between the extrusion device 30 and the surface of the fiber 100 meets the extrusion requirements of the fiber 100. The pressure detection element 103 is disposed on the pipeline and downstream of the pressure regulating valve 102. This allows for real-time monitoring of the pressure after the pressure regulating valve 102 regulates the pressure, ensuring reliable pressure regulation.

[0064] Furthermore, if Figure 3 As shown, the driving device 31 also includes an auxiliary pressure detection component 104 arranged on the pipeline. Along the flow direction of the compressed gas in the pipeline, the auxiliary pressure detection component 104 is arranged upstream of the pressure regulating component. In this way, only the parameters before and after pressure regulation can be detected, ensuring precise regulation of the pressure regulating component.

[0065] In addition, in this embodiment, Figure 3 As shown, the driving device 31 also includes a silencer 105 connected to the control valve 101. The silencer 105 can be a muffler, which can reduce the noise generated by the control valve 101 in the pipeline and improve the comfort of the working environment.

[0066] In addition, in this embodiment, Figure 1 and Figure 2As shown, multiple drive rollers 20 can be provided, and the fiber 100 shuttles back and forth between the multiple drive rollers 20, so that the multiple drive rollers 20 synchronously transport the fiber 100. It should be noted that the glue squeezing device 30 is only provided corresponding to the drive roller 20 located at the end of the outlet side of the sizing tank 10. This ensures that the fiber 100 contacts the sizing agent before contacting the extrusion member 33, ensuring that the glue squeezing device 30 can squeeze the fiber 100 adhered with the sizing agent.

[0067] According to the first aspect of the present invention, a carbon fiber sizing and extruding device is provided, in which the driving end of the driving device drives the extrusion member to press against the driving roller, so that the force applied by the extrusion member relative to the fiber surface can be accurately controlled, so that the sizing amount of the product can be controlled, and the plate-shaped extrusion member can effectively reduce unnecessary friction with the fiber contact surface, thereby ensuring uniform sizing amount, thereby improving the quality of products produced by the carbon fiber production equipment.

[0068] According to a second aspect of the present invention, a carbon fiber production device is provided, comprising the carbon fiber sizing and extruding device as described above, which can ensure uniform sizing of the fibers, thereby improving the quality of products produced by the carbon fiber production device.

[0069] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The scope of protection of the present application is not limited thereto. Although the present application has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed in the present application, or perform equivalent replacements for some of the technical features thereof. These modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims.

Claims

1. A carbon fiber sizing and squeezing device, characterized in that: The carbon fiber sizing and glue squeezing device comprises: a sizing tank containing a sizing agent; A driving roller is formed into a cylindrical structure and its outer wall in the circumferential direction abuts against the fiber, and the driving roller rotates to drive the fiber to pass through the sizing agent in the sizing tank; The glue squeezing device is arranged at the outlet side of the sizing tank, and the glue squeezing device includes a driving device and an extruding member. The driving device has a driving end moving toward a driving roller, and the extruding member is connected to the driving end. The extruding member is formed into a plate-like structure, and the driving end drives the extruding member to press against the driving roller to squeeze out excess sizing agent on the fiber.

2. The carbon fiber sizing and squeezing device according to claim 1, characterized in that: The carbon fiber sizing and squeezing device also includes: A support member is arranged outside the sizing tank, and the main body of the driving device is hinged to the support member; A connecting member, hinged to the supporting member and the extruding member respectively; The angle between the plane where the extrusion piece is located and the driving roller is adjustable.

3. The carbon fiber sizing and squeezing device according to claim 1, characterized in that: The driving device is formed as a telescopic structure, and the length of the driving end extending out of the main body of the driving device is adjustable to adjust the distance between the extruding member and the driving roller.

4. The carbon fiber sizing and squeezing device according to claim 1, characterized in that: A side of the extrusion member facing the driving roller is formed as an extrusion portion, and the driving end is fixedly connected to a side facing away from the extrusion portion.

5. The carbon fiber sizing and squeezing device according to claim 1, characterized in that: The carbon fiber sizing and squeezing device also includes: A protection member is arranged on a side of the extruding member facing the driving roller, so that the fiber abuts against the protection member, and the protection member is flexible.

6. The carbon fiber sizing and squeezing device according to claim 5, characterized in that: The protective piece is made of flannel.

7. The carbon fiber sizing and squeezing device according to claim 1, characterized in that: The drive device is formed as a pneumatic drive mechanism; The driving device comprises: Air supply parts; A cylinder connected to the air supply member via a pipeline; The control valve is arranged on the pipeline and is used to adjust the angle between the plane where the extrusion piece is located and the driving roller, so as to adjust the extrusion pressure on the fiber.

8. The carbon fiber sizing and squeezing device according to claim 7, characterized in that: The driving device further comprises: A pressure regulating valve, arranged on the pipeline; The pressure detection component is arranged on the pipeline and downstream of the pressure regulating valve.

9. The carbon fiber sizing and squeezing device according to claim 7, characterized in that: The driving device further comprises: A silencer is connected to the control valve.

10. A carbon fiber production device, characterized in that: The invention comprises the carbon fiber sizing and squeezing device as described in any one of claims 1 to 9.

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