Uniform impregnation equipment for tow fibers

Abstract

The invention relates to the technical field of fiber material impregnation, and provides tow fiber uniform impregnation equipment which comprises a dip-coating box, and two opposite supporting plates are fixedly arranged on the dip-coating box; a transverse vibration rod capable of conducting reciprocating vibration in the axial direction and a longitudinal vibration rod capable of conducting reciprocating vibration in the vertical direction are arranged between the two supporting plates. The transverse vibration rod and the longitudinal vibration rod are rotationally connected with a silk spreading roller in a penetrating manner; a vibration motor is mounted on the supporting plate; the vibration motor is configured to provide excitation force to enable the transverse vibration rod and the longitudinal vibration rod to vibrate in the axial direction and the vertical direction respectively. A dip-coating roller is arranged in the dip-coating box, and a wire outlet is formed in the side wall of the dip-coating box. Therefore, according to the yarn spreading device, the yarn spreading roller of the transverse vibration rod vibrates in a reciprocating mode in the axial direction, reciprocating rubbing force is generated on the tows, and the tows are spread in the axial direction to be in a yarn arrangement shape. And the tows are further dispersed and unfolded by overlapping the vertical reciprocating vibration of the tow unfolding roller of the longitudinal vibration rod. And during dip-coating, fibers in the central area of the tow can also be dip-coated with the glue, so that the permeability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fiber material impregnation, and in particular relates to a device for uniformly impregnating tow fibers. Background Art

[0002] As an important reinforcing fiber material, carbon fiber is widely used in advanced composite materials. The impregnation of resin matrix is ​​an important link in the production process.

[0003] However, in large-tow carbon fiber, due to the coarse fiber bundle, fiber stacking and kinking occur, making it difficult for the resin fiber to penetrate the interior of the bundle. This results in internal pores, weakening the interfacial bonding between the fiber and resin phases, and in severe cases, causing the two to separate. This seriously affects the strength, stiffness, durability, and reliability of the composite material.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0005] In view of the above-mentioned defects, the present invention mainly provides a device for uniformly dipping tow fibers into glue, so as to solve the technical problem of poor permeability of large tow carbon fibers.

[0006] In order to solve the above problems, the present invention provides a uniformly glue-impregnated device for tow fibers, comprising a dipping box, on which two oppositely arranged support plates are fixed; a transverse vibration rod capable of reciprocating vibration in the axial direction and a longitudinal vibration rod capable of reciprocating vibration in the vertical direction are arranged between the two support plates; the transverse vibration rod and the longitudinal vibration rod are respectively rotatably connected with a wire spreading roller;

[0007] A vibration motor is installed on the support plate; the vibration motor is configured to: provide an exciting force to make the transverse vibration rod and the longitudinal vibration rod vibrate axially and vertically respectively;

[0008] A dipping roller is arranged in the dipping box, and a wire outlet is arranged on the side wall of the dipping box.

[0009] According to the device for uniformly dipping tow fibers in glue of the present invention, both ends of the transverse vibration rod are respectively slidably connected to the support plate; a stop cover is fixed on the outer wall of the support plate; a transverse vibration spring is sandwiched between the stop cover and the end face of the transverse vibration rod.

[0010] According to the uniform glue dipping device for tow fibers of the present invention, a linear bearing is passed through the support plate, and the transverse vibration rod is sleeved with the linear bearing.

[0011] According to the device for uniformly dipping silk bundle fibers in glue of the present invention, a vertically arranged, elongated longitudinal vibration hole is opened on the support plate; the longitudinal vibration rod is slidably arranged in the longitudinal vibration hole; two longitudinal vibration springs are arranged in the longitudinal vibration hole, which are respectively located on the upper and lower sides of the longitudinal vibration rod.

[0012] According to the device for uniformly dipping tow fibers in glue of the present invention, an anti-slip column is further provided in the longitudinal vibration hole; the anti-slip column is slidably connected to the longitudinal vibration rod.

[0013] According to the equipment for uniformly dipping filament fibers in tow, the cross-sectional shape of the spreading roller is elliptical.

[0014] According to the equipment for uniformly dipping filament fibers in tow according to the present invention, a tensioning roller is further arranged between the longitudinal vibration rod and the dipping roller.

[0015] According to the uniform glue dipping device for tow fibers of the present invention, a glue squeezing mechanism is further provided on one side of the silk outlet of the dipping box; the glue squeezing mechanism comprises a glue squeezing table, and a glue squeezing groove is provided on the glue squeezing table facing the silk outlet of the dipping box;

[0016] The glue squeezing mechanism also includes a pressure block, and a wire pressing strip cooperating with the glue squeezing groove is provided at the bottom of the pressure block; a bracket is fixed on the glue squeezing table, and a pressure cylinder for providing downward pressure to the pressure block is installed on the bracket.

[0017] According to the uniform glue dipping device for tow fibers of the present invention, the glue squeezing table is provided with a clearance cavity for accommodating the pressure block; a guide gear is provided on the inner wall of the clearance cavity, and guide racks meshing with the guide gear on the corresponding side are provided on both sides of the pressure block;

[0018] A limiting column is fixedly arranged at the bottom of the pressure block, and a limiting hole which is plugged and matched with the limiting column is opened at the bottom of the clearance cavity; and a top spring is sleeved on the limiting column.

[0019] According to the equipment for uniformly dipping tow fibers in glue of the present invention, a reversing roller is respectively arranged on both sides of the glue extrusion groove.

[0020] In summary, the present invention makes the spreading roller of the transverse vibration rod vibrate back and forth in the axial direction, and the tow rubs against the tow at a certain angle when passing through the tow spreading roller, so that the tow is spread into a line shape in the axial direction. The vertical reciprocating vibration of the spreading roller of the longitudinal vibration rod is superimposed to further disperse and spread the tow. During the dipping, the fibers in the central area of ​​the tow can also be dipped in the rubber, thereby improving the permeability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 yes Figure 1 The structural diagram of the middle A direction;

[0023] Figure 3 yes Figure 1 Schematic diagram of the structure in the middle B direction;

[0024] Figure 4 yes Figure 3 Schematic diagram of the structure of the D area in the middle;

[0025] Figure 5 yes Figure 3 Schematic diagram of the structure of the middle C area;

[0026] In the figure: 1-dipping box, 11-support plate, 12-vibration motor, 13-rubber block, 14-wire outlet, 15-reinforcement rod, 16-blocking cover, 17-longitudinal vibration hole, 18-anti-slip column; 2-wire spreading roller, 21-transverse vibration rod, 22-longitudinal vibration rod, 23-transverse vibration spring, 24-linear bearing, 25-longitudinal vibration spring; 3-roller, 31-dipping roller, 32-tensioning roller, 33-reversing roller; 4-glue extrusion table, 41-glue extrusion groove, 42-allowing cavity, 43-bracket, 44-pressurized cylinder, 45-limiting hole, 46-guide gear; 5-pressurizing block, 51-pressing wire strip, 52-guide rack, 53-limiting column, 54-top spring; 100-material roll, 200-traction mechanism, 300-tow, 301-fiber strip. DETAILED DESCRIPTION

[0027] See also Figure 1 The present invention provides a uniformly glue-impregnated device for tow fibers, comprising a dipping box 1, on which two oppositely arranged support plates 11 are fixed; between the two support plates 11, a transverse vibration rod 21 capable of reciprocating vibration in the axial direction and a longitudinal vibration rod 22 capable of reciprocating vibration in the vertical direction are arranged; the transverse vibration rod 21 and the longitudinal vibration rod 22 are respectively rotatably connected with a spreading roller 2;

[0028] A vibration motor 12 is installed on the support plate 11 ; the vibration motor 12 provides an exciting force to make the transverse vibration rod 21 and the longitudinal vibration rod 22 vibrate axially and vertically respectively.

[0029] The dipping box 1 is provided with a dipping roller 31, and a wire outlet 14 is provided on the side wall of the dipping box 1. The dipping box 1 of the present invention contains rubber material, and the dipping roller 31 is located below the liquid surface of the rubber material.

[0030] Combination Figure 2 The tow 300 is pulled out from the material roll 100, and is sequentially wound around the wire spreading roller 2 of the transverse vibration rod 21, the wire spreading roller 2 of the longitudinal vibration rod 22, and the dipping roller 31, and the tow 300 after dipping is finally pulled out from the wire outlet 14. A traction mechanism 200 can be set on one side of the dipping box 1 to pull the tow 300 to achieve continuous production.

[0031] The spreading roller 2 of the transverse vibration rod 21 reciprocates in the axial direction, and the spreading roller 2 and the filament bundle 300 undergo reciprocating friction motion, so that the filament bundle 300 is spread out in the axial direction into a line shape. The vertical reciprocating vibration of the spreading roller 2 of the longitudinal vibration rod 22 is superimposed, so that the filament bundle 300 is further dispersed and spread out. After that, the filament bundle 300 is wound around the dipping roller 31, and the stacked or entangled fibers are flattened under the action of traction, so that the fibers in the central area of ​​the filament bundle 300 can also be dipped in the rubber, thereby improving the permeability.

[0032] Furthermore, the cross-sectional shape of the wire spreading roller 2 is an ellipse; under the action of traction and vibration force, the surface of the wire spreading roller 2 generates an axial outward expansion force from the center to both sides of the wire bundle 300, making it easier for the wire bundle 300 to be spread out into a line shape.

[0033] Furthermore, a tensioning roller 32 is provided between the longitudinal vibration rod 22 and the dipping roller 31; under the action of the traction force, the filament bundle 300 can be flattened better, thereby improving the dipping effect.

[0034] Optionally, the tensioning roller 32 and the dipping roller 31 are respectively connected to the roller shaft 3; the two roller shafts 3 are rotatably disposed on the two support plates 11 and the dipping box 1 respectively.

[0035] Preferably, a reinforcing rod 15 is fixedly connected between the two support plates 11 to improve the connection strength of the two support plates 11 and stabilize the distance between them.

[0036] As an embodiment, a rubber block 13 is provided at the bottom of the dipping box 1; after the vibration motor 12 is turned on, the dipping box 1 can also vibrate slightly, and the rubber in the box is subjected to the vibration force, which improves the wetting effect and enables the fibers of the filament bundle 300 to be evenly dipped in the rubber.

[0037] See also Figure 3 and Figure 5 As an embodiment, the two ends of the transverse vibration rod 21 are respectively slidably connected to the support plate 11; a blocking cover 16 is fixed on the outer wall of the support plate 11; a transverse vibration spring 23 is sandwiched between the blocking cover 16 and the end surface of the transverse vibration rod 21; the exciting force of the vibration motor 12 is transmitted to the transverse vibration spring 23 through the support plate 11, so that the transverse vibration rod 21 vibrates back and forth along the axial direction.

[0038] Furthermore, a linear bearing 24 is provided on the support plate 11 , and the transverse vibration rod 21 is sleeved on the linear bearing 24 , so as to constrain the movement posture of the transverse vibration rod 21 and reduce the resistance of reciprocating vibration.

[0039] As an embodiment, a vertically arranged, elongated longitudinal vibration hole 17 is opened on the support plate 11; the longitudinal vibration rod 22 is slidably arranged in the longitudinal vibration hole 17; two longitudinal vibration springs 25 are arranged in the longitudinal vibration hole 17, which are respectively located on the upper and lower sides of the longitudinal vibration rod 22; the exciting force of the vibration motor 12 is transmitted to the longitudinal vibration spring 25 through the support plate 11, so that the longitudinal vibration rod 22 vibrates back and forth in the vertical direction.

[0040] Furthermore, an anti-detachment column 18 is provided in the longitudinal vibration hole 17; the anti-detachment column 18 slides through the longitudinal vibration rod 22 to prevent the longitudinal vibration rod 22 from detaching from the longitudinal vibration hole 17 during the vibration process;

[0041] To further improve the dip coating effect, see Figure 4 As an embodiment, a glue extrusion mechanism is further provided on one side of the wire outlet 14 of the dipping box; the glue extrusion mechanism comprises a glue extrusion table 4, and a glue extrusion groove 41 facing the wire outlet 14 of the dipping box is provided on the glue extrusion table 4;

[0042] The glue extrusion mechanism also includes a pressure block 5, and a wire pressing strip 51 is provided at the bottom of the pressure block 5 to cooperate with the glue extrusion groove 41; a bracket 43 is fixed on the glue extrusion platform 4, and a pressure cylinder 44 is installed on the bracket 43 to provide downward pressure to the pressure block 5;

[0043] After the coating, the tow 300 enters the rubber extrusion groove 41 from the outlet 14, and the fiber strips 301 of the tow 300 are further flattened and spread out into a single-layer line shape under the pressure of the wire pressing strip 51. Under the pressure, the rubber coating on the fiber strips 301 is more uniform, so that the uncoated parts can be coated with rubber, further improving the coating effect.

[0044] Furthermore, a reversing roller 33 is provided on both sides of the rubber extrusion groove 41; the apex positions of the two reversing rollers 33 are slightly higher than the bottom of the rubber extrusion groove 41, or are flush with it. The filament bundle 300 enters the rubber extrusion groove 41 in a straight posture, which is conducive to the rubber extrusion operation. The friction contact between the filament bundle 300 and the two ends of the rubber extrusion groove 41 is avoided, and the resistance is reduced.

[0045] As an embodiment, the extrusion station 4 is provided with a clearance cavity 42 for accommodating the pressure block 5; a guide gear 46 is provided on the inner wall of the clearance cavity 42, and both sides of the pressure block 5 are provided with guide racks 52 meshing with the guide gear 46 on the corresponding side; the movement resistance of the pressure block 5 is reduced by the cooperation of the gear and the rack. At the same time, the cooperation accuracy of the gear and the rack is high, which limits the left and right movement and rotation of the pressure block 5, so that it can accurately maintain the movement posture in the vertical direction.

[0046] Furthermore, a limiting column 53 is fixedly arranged at the bottom of the pressure block 5, and a limiting hole 45 for plugging and cooperating with the limiting column 53 is opened at the bottom of the clearance cavity 42; a top spring 54 is sleeved on the limiting column 53;

[0047] By controlling the air pressure of the pressurizing cylinder 44, the downward pressure is greater than the elastic force of the top spring 54, so that the pressurizing block 5 always maintains the downward pressure state. The maximum downward pressure of the pressurizing block 5 is controlled by the depth of the limit hole 45; the minimum distance between the pressed wire strip 51 and the bottom of the rubber extrusion groove 41 is slightly smaller than the diameter of the fiber strip 301, so that the filament bundle 300 is unfolded in the rubber extrusion groove 41 in a single-layer line shape. When the thickness of the filament bundle 300 is relatively large, under the joint action of the pressurizing cylinder 44 and the top spring 54, the pressurizing block 5 vibrates back and forth, flattens the filament bundle 300, and evenly disperses the rubber material.

[0048] Those skilled in the art can adjust the air intake pressure of the pressurized cylinder 44 through experiments so that the extrusion force is within a reasonable range, which can not only disperse the filament bundle 300 but also reduce the resistance to its movement.

[0049] In summary, the present invention provides a device for uniformly dipping fibers in a tow, wherein the tow is spread into a line shape in the axial direction by the tow spreading roller of the transverse vibration rod reciprocatingly vibrating in the axial direction, and the tow is subjected to reciprocating friction motion with the tow. The tow is then spread into a line shape in the axial direction by the vertical reciprocating vibration of the tow spreading roller of the longitudinal vibration rod. The tow is further dispersed and spread. During dipping, the fibers in the central area of ​​the tow can also be dipped in the rubber, thereby improving the permeability.

[0050] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A tow fiber uniform dipping device, characterized in that: The invention comprises a dipping box, on which two supporting plates arranged opposite to each other are fixed; a transverse vibration rod capable of reciprocating vibration in the axial direction and a longitudinal vibration rod capable of reciprocating vibration in the vertical direction are arranged between the two supporting plates; the transverse vibration rod and the longitudinal vibration rod are respectively rotatably connected with a wire spreading roller; A vibration motor is installed on the support plate; the vibration motor is configured to: provide an exciting force to make the transverse vibration rod and the longitudinal vibration rod vibrate axially and vertically respectively; A dipping roller is arranged in the dipping box, and a wire outlet is arranged on the side wall of the dipping box.

2. The uniformly dipping device for tow fibers according to claim 1, characterized in that: The two ends of the transverse vibration rod are respectively slidably connected to the support plate; a stop cover is fixedly arranged on the outer wall of the support plate; and a transverse vibration spring is sandwiched between the stop cover and the end surface of the transverse vibration rod.

3. The uniformly impregnated tow fiber device according to claim 2, characterized in that: A linear bearing is provided on the support plate, and the transverse vibration rod is sleeved on the linear bearing.

4. The uniformly dipping device for tow fibers according to claim 1, characterized in that: The support plate is provided with a vertically arranged, long strip-shaped longitudinal vibration hole; the longitudinal vibration rod is slidably arranged in the longitudinal vibration hole; and two longitudinal vibration springs are arranged in the longitudinal vibration hole and are respectively located at the upper and lower sides of the longitudinal vibration rod.

5. The uniformly dipping device for tow fibers according to claim 4, characterized in that: An anti-slip column is also arranged in the longitudinal vibration hole; the anti-slip column slides through the longitudinal vibration rod.

6. The uniformly dipping device for tow fibers according to claim 1, characterized in that: The cross-sectional shape of the wire spreading roller is elliptical.

7. The uniformly impregnated tow fiber device according to claim 1, characterized in that: A tensioning roller is also arranged between the longitudinal vibration rod and the dipping roller.

8. The uniformly impregnated tow fiber device according to any one of claims 1 to 7, characterized in that: A glue extrusion mechanism is also provided on one side of the wire outlet of the dipping box; the glue extrusion mechanism includes a glue extrusion table, and a glue extrusion groove is provided on the glue extrusion table facing the wire outlet of the dipping box; The glue squeezing mechanism also includes a pressure block, and a wire pressing strip cooperating with the glue squeezing groove is provided at the bottom of the pressure block; a bracket is fixed on the glue squeezing table, and a pressure cylinder for providing downward pressure to the pressure block is installed on the bracket.

9. The uniformly dipping device for tow fibers according to claim 8, characterized in that: The extrusion platform is provided with a clearance cavity for accommodating the pressure block; a guide gear is provided on the inner wall of the clearance cavity, and both sides of the pressure block are provided with guide racks meshing with the guide gear on the corresponding side; A limiting column is fixedly arranged at the bottom of the pressure block, and a limiting hole which is plugged and matched with the limiting column is opened at the bottom of the clearance cavity; and a top spring is sleeved on the limiting column.

10. The uniformly impregnated tow fiber device according to claim 8, characterized in that: A reversing roller is respectively arranged on both sides of the rubber extrusion groove.

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