Carbon fiber continuous weft laying device and laying method thereof

Abstract

The invention belongs to the technical field of warp knitting machines, and particularly relates to a carbon fiber continuous weft laying device and a laying method thereof.The carbon fiber continuous weft laying device comprises a laying platform, positioning assemblies and a weft laying trolley, and the positioning assemblies are located on the two sides of the laying platform and comprise needle blocks used for penetrating flat filaments to position the flat filaments and straight needle assemblies used for pressing the needle blocks to limit the flat filaments on the needle blocks; the weft laying trolley comprises at least one reed locking assembly used for locking the flat filaments and a yarn pressing assembly which is arranged below the reed locking assembly in a lifting mode and used for pressing the flat filaments to the needle block so that the flat filaments can penetrate into the needle block. Firstly, the flat filaments are pressed to the needle block through the yarn pressing assembly to position one ends of the flat filaments, then the flat filaments in the winding process are locked through the reed locking assembly to prevent the flat filaments from retreating in the winding process, and then the needle block and the straight needle assembly are matched to fix the other ends of the flat filaments, so that the weft laying trolley drives the flat filaments to bypass the needle block for continuous laying. The single flat filament laying process does not need to be cut off by a cutter, the whole process is continuously carried out, and the laying efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of warp knitting machines, and particularly relates to a carbon fiber continuous weft laying device and a laying method thereof. Background Art

[0002] In the prior art, carbon fiber is generally laid by using a weft laying trolley. When the weft laying trolley pulls the flat wire to one side of the frame, a cutter is required to cut the flat wire. Then the weft laying trolley continues to pull the flat wire to the other side of the frame for the next laying. Then the cutter on the other side continues to cut the flat wire, and this reciprocating action is used to lay the flat wire one by one. However, this laying method requires waiting for the cutter to cut the flat wire during the laying process, which has a waiting time and reduces the laying efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: in order to solve the problem that in the existing carbon fiber laying process, it is necessary to wait for the cutter to cut the flat wire, which has a waiting time and reduces the laying efficiency, a carbon fiber continuous weft laying device and a laying method thereof are now provided.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a carbon fiber continuous weft laying device, comprising:

[0005] Laying platform for laying carbon fiber flat yarn;

[0006] Positioning components, which are located on both sides of the laying platform and include needle blocks for piercing the flat wire to position the flat wire and straight needle components for pressing against the needle blocks to confine the flat wire on the needle blocks;

[0007] The weft-laying trolley comprises at least one locking reed assembly for locking the flat yarn and a yarn pressing assembly which is lifted and arranged below the locking reed assembly to press the flat yarn toward the needle block for insertion.

[0008] Furthermore, the reed assembly includes a yarn splitting plate having multiple first yarn splitting eyes, a movably arranged clamping plate having multiple second yarn splitting eyes, and a first linear drive mechanism connected to the clamping plate to drive the first yarn splitting eyes and the second yarn splitting eyes to align or stagger.

[0009] Furthermore, the straight needle assembly includes a straight needle body, a third linear drive mechanism for driving the straight needle body to move closer to or away from the needle block, and a fourth linear drive mechanism for driving the straight needle body to reciprocate along the length direction of the needle block.

[0010] Furthermore, the needle block is inclined from top to bottom in a direction away from the straight needle body, and the needle tip of the straight needle body is lower than the needle tip of the needle block.

[0011] Furthermore, the plurality of first yarn splitting eyes are arranged obliquely along the length direction of the yarn splitting plate and are parallel to each other, the plurality of second yarn splitting eyes are arranged obliquely along the length direction of the splint and are parallel to each other, and the first yarn splitting eyes and the second yarn splitting eyes are both rectangular structures.

[0012] Furthermore, the yarn pressing assembly includes a second linear drive mechanism and a yarn pressing plate connected to an output end of the second linear drive mechanism.

[0013] Furthermore, it also includes a crossbeam for installing the positioning component, a guide rail beam is slidably installed between the two crossbeams, and the weft laying trolley is slidably installed on the guide rail beam.

[0014] Furthermore, the fourth linear drive mechanism includes a motor, a driving pulley connected to the output end of the motor, a driven pulley and a synchronous belt wound between the driving pulley and the driven pulley, and the third linear drive mechanism is installed on the synchronous belt.

[0015] Furthermore, the weft laying trolley includes two locking reed assemblies, namely an upper locking reed assembly and a lower locking reed assembly, and a plurality of yarn guide rods are provided between the two.

[0016] A laying method of a carbon fiber continuous weft laying device comprises the following steps:

[0017] S1: First, the weft placement trolley slides along the guide rail to one of the positioning components on one side of the weft placement platform. The second linear drive mechanism is activated to drive the yarn pressing plate to press the flat yarn towards the needle block. The needle block penetrates the flat yarn to position the flat yarn, and then the yarn pressing plate moves up.

[0018] S2, then the third linear drive mechanism drives the straight needle body to press against the needle block to confine the flat wire on the needle block;

[0019] S3, the weft placing trolley and the straight needle body move simultaneously in the direction away from the needle block for a distance;

[0020] S4, then starting the first linear drive mechanism, the clamping plate moves so that the second yarn eyelet thereon is staggered with the first yarn eyelet on the yarn separating plate to lock the flat yarn;

[0021] S5, the weft placing trolley and the straight needle body move back toward the needle block, and then both move along the crossbeam direction to pull the flat yarn to the winding position, and then the lower locking reed assembly unlocks the flat yarn, the yarn pressing plate presses the flat yarn toward the needle block, and then the upper locking reed assembly unlocks the flat yarn;

[0022] S6. Finally, the weft laying trolley slides to the positioning assembly on the other side of the laying platform for continuous laying.

[0023] The beneficial effects of the present invention are as follows: the present invention first uses the yarn pressing component to press the flat wire toward the needle block to position one end of the flat wire, then uses the locking reed component to lock the flat wire during the winding process to prevent it from retreating during the winding process, and then uses the needle block and the straight needle component to fix the other end of the flat wire, so that the weft laying trolley drives the flat wire to bypass the needle block for continuous laying. During the laying process of a single-pass flat wire, there is no need to wait for the cutter to cut it, and the entire process is carried out continuously, thereby improving the laying efficiency.

[0024] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and examples.

[0026] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0027] Figure 2 is a side view of the present invention;

[0028] Figure 3 yes Figure 2 A partial enlarged view of part A;

[0029] Figure 4 This is a three-dimensional schematic diagram of the weft placing trolley from the first perspective;

[0030] Figure 5 This is a three-dimensional schematic diagram of the weft placing trolley from the second perspective;

[0031] Figure 6 This is an exploded view of the lock reed assembly;

[0032] Figure 7 It is a three-dimensional schematic diagram of the straight needle assembly from the first perspective;

[0033] Figure 8 is a three-dimensional schematic diagram of the straight needle assembly from a second perspective;

[0034] Figure 9 yes Figure 1 A partial enlarged view of part B;

[0035] In the picture:

[0036] 1. Lay the platform;

[0037] 2. Positioning assembly; 201. Needle block; 202. Straight needle body; 203. Third linear drive mechanism; 204. Fourth linear drive mechanism; 2041. Motor; 2042. Driving pulley; 2043. Driven pulley; 2044. Synchronous belt; 2045. Driving pulley seat; 2046. Driven pulley seat; 205. Fixed seat; 206. Slider; 207. Slide rail;

[0038] 3. Weft-laying trolley; 301. Locking reed assembly; 3011. Yarn-separating plate; 3012. First yarn-separating eyelet; 3013. Clamping plate; 3014. Second yarn-separating eyelet; 3015. First linear drive mechanism; 3016. Cover plate; 3017. Chute; 302. Yarn-pressing assembly; 3021. Second linear drive mechanism; 3022. Yarn-pressing plate; 303. Yarn guide rod;

[0039] 4. Beam;

[0040] 5. Guide rail beam. DETAILED DESCRIPTION

[0041] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams that illustrate the basic structure of the present invention only in a schematic manner. Therefore, they only show components relevant to the present invention, and directions and references (e.g., up, down, left, right, etc.) may be used solely to facilitate the description of features in the drawings. The following detailed description is therefore not to be taken in a limiting sense, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0042] like Figure 1-Figure 3 As shown, a carbon fiber continuous weft laying device includes a laying platform 1, a positioning component 2 and a weft laying trolley 3;

[0043] The laying platform 1 is used for laying carbon fiber flat yarns, which can be a conveyor belt;

[0044] The positioning assembly 2 has two groups, one located on either side of the laying platform 1 along its length, and includes a needle block 201 for piercing the flat wire to position it and a straight needle assembly for pressing against the needle block 201 to confine the flat wire on the needle block 201. The needle block 201 and the straight needle assembly cooperate with each other to fix the flat wire to prevent it from slipping out of the needle block 201. The needle block 201 extends along the length of the laying platform 1 and includes a plurality of needle bodies arranged at intervals;

[0045] The weft placing trolley 3 includes at least one locking reed assembly 301 for locking the flat yarn and a yarn pressing assembly 302 which is lifted and lowered below the locking reed assembly 301 to press the flat yarn toward the needle block 201 for insertion.

[0046] During laying, the weft placing trolley 3 first drives the flat yarn to one of the positioning components 2 on one side of the laying platform 1, and the yarn pressing component 302 presses the flat yarn toward the needle block 201. The needle block 201 penetrates to position one end of the flat yarn, and then the straight needle component presses against the needle block 201 to limit the flat yarn on the needle block 201. Then the weft placing trolley 3 and the straight needle body 202 move a distance away from the needle block 201 at the same time, and the flat yarn is pulled out a certain length. The locking reed component 301 locks the length of the flat yarn. Then the weft laying trolley 3 and the straight needle assembly move back in the direction of the needle block 201, and then the two move laterally along the direction of the crossbeam 4 to pull the flat wire to the winding position, and the straight needle assembly presses against the needle block 201 to limit the other end of the flat wire on the needle block 201. Finally, the weft laying trolley 3 slides to the positioning assembly 2 on the other side of the laying platform 1 for continuous laying. The weft laying equipment adopts a continuous laying method. During the laying process of a single flat wire, there is no need to wait for the cutter to cut it. The whole process is carried out continuously, which improves the laying efficiency.

[0047] In some examples, such as Figure 4-Figure 6 As shown, the reed assembly 301 includes a yarn splitting plate 3011 having a plurality of first yarn splitting eyes 3012, a movably arranged clamping plate 3013 having a plurality of second yarn splitting eyes 3014, and a first linear drive mechanism 3015 connected to the clamping plate 3013 to drive the first yarn splitting eyes 3012 and the second yarn splitting eyes 3014 to align or stagger. The first linear drive mechanism 3015 can be, but is not limited to, a cylinder or an electric push rod.

[0048] In this embodiment, the yarn splitting plate 3011 is supported below the clamping plate 3013, and a cover plate 3016 is provided above the clamping plate 3013. The cover plate 3016 is fixed to the yarn splitting plate 3011, and a slide groove 3017 is provided at the bottom of the cover plate 3016 for the clamping plate 3013 to slide, thereby ensuring the movement direction of the clamping plate 3013. The plurality of first yarn splitting eyes 3012 correspond to the second yarn splitting eyes 3014 one by one, and each first yarn splitting eye 3012 and second yarn splitting eye 3014 only allows a single flat yarn to pass through. When the first yarn splitting eye 3012 and the second yarn splitting eye 3014 are aligned, the flat yarn is passed through them. When the first linear driving mechanism 3015 drives the clamping plate 3013 to move so that the first yarn splitting eye 3012 and the corresponding second yarn splitting eye 3014 are offset, the flat yarn passed through them is locked, thereby preventing the flat yarn from twisting during the laying process.

[0049] In some examples, such as Figure 7 and Figure 8As shown, the straight needle assembly includes a straight needle body 202 and a third linear drive mechanism 203 for driving the straight needle body 202 to approach or move away from the needle block 201, and a fourth linear drive mechanism 204 for driving the straight needle body 202 to move back and forth along the length direction of the needle block 201. When the third linear drive mechanism 203 drives the straight needle body 202 to approach the needle block 201 and penetrates the flat wire on the needle block 201, it can prevent the flat wire from slipping out of the needle block 201.

[0050] In some examples, the needle block 201 is inclined from top to bottom in a direction away from the straight needle body 202 and the needle tip of the straight needle body 202 is lower than the needle tip of the needle block 201. The needle body on the needle block 201 is inclined and the straight needle body 202 is horizontally arranged. When the yarn pressing assembly 302 presses the flat wire toward the needle block 201, the needle block 201 penetrates into the flat wire. The inclined needle block 201 can prevent the flat wire from falling out to a certain extent, and after the straight needle body 202 penetrates into the flat wire and abuts against the needle block 201, the flat wire can be confined.

[0051] In some examples, multiple first yarn dividing eyes 3012 are tilted and parallel to each other along the length direction of the yarn dividing plate 3011, and multiple second yarn dividing eyes 3014 are tilted and parallel to each other along the length direction of the clamping plate 3013. The tilted first yarn dividing eyes 3012 and the second yarn dividing eyes 3014 have a certain guiding effect on the flat yarn. When the flat yarn passes through, it will contact different positions in the yarn dividing eyes according to its own tightness, reducing the wear of the yarn dividing eyes. The tilt angle of the yarn dividing eyes is 45°±5°, and the first yarn dividing eyes 3012 and the second yarn dividing eyes 3014 are both rectangular structures. The rectangular structure matches the shape of the flat yarn, which can avoid the flat yarn from twisting in the first yarn dividing eyes 3012 and the second yarn dividing eyes 3014.

[0052] In some examples, the yarn pressing assembly 302 includes a second linear drive mechanism 3021 and a yarn pressing plate 3022 connected to the output end of the second linear drive mechanism 3021. The second linear drive mechanism 3021 can be but is not limited to a cylinder or an electric push rod, etc. The number of yarn pressing plates 3022 can be but is not limited to one, two or three, etc.

[0053] In some examples, a crossbeam 4 for mounting the positioning assembly 2 is further included. Both crossbeams 4 extend along the length direction of the laying platform 1 and a guide rail beam 5 is slidably mounted between them. The weft laying trolley 3 is slidably mounted on the guide rail beam 5.

[0054] In some examples, the fourth linear drive mechanism 204 includes a motor 2041, a driving pulley 2042 connected to the output end of the motor 2041, a driven pulley 2043 and a synchronous belt 2044 wound between the driving pulley 2042 and the driven pulley 2043. The third linear drive mechanism 203 is a screw nut structure, which is installed on the synchronous belt 2044 through a fixed seat 205 and its output end is connected to the straight needle body 202; the motor 2041 starts to drive the driving pulley 2042 to rotate, and the synchronous belt 2044 and the driven pulley 2043 rotate synchronously, driving the fixed seat 205 and the straight needle body 202 thereon to move along the length direction of the needle block 201. In order to ensure its movement direction, a sliding member is installed on the fixed seat 205. Block 206, a slide rail 207 for the slider 206 to slide is provided between the active pulley seat 2045 for the active pulley 2042 to be installed and the driven pulley seat 2046 for the driven pulley 2043 to be installed, and a first slider that cooperates with the crossbeam 4 is installed at the bottom of the active pulley seat 2045, and a second slider that cooperates with the crossbeam 4 is installed at the bottom of the driven pulley seat 2046. The end of the guide beam 5 is also fixed on the second slider. When the driver drives the guide beam 5 to move, it can drive the fourth linear drive mechanism 204 and the straight needle body 202 thereon to move synchronously, that is, the fourth linear drive mechanism 204 can actively drive the straight needle body 202 to move laterally through the synchronous belt 304, and can also passively drive the straight needle body 202 to move laterally under the action of the guide beam 5, such as Figure 9 shown.

[0055] In some examples, the weft laying trolley 3 includes two locking reed assemblies 301, namely an upper locking reed assembly and a lower locking reed assembly, for double locking, and the upper locking reed assembly and the lower locking reed assembly are far away from each other, and are respectively located at the two ends of the weft laying trolley 3 in the longitudinal direction, so that the flat wire clamped therebetween is the longest, to further reduce the probability of the flat wire twisting. Of course, the number of locking reeds can also be three or four, etc., which is not limited in this embodiment.

[0056] The upper locking reed assembly and the lower locking reed assembly are both provided with a plurality of yarn guide rods 303. The upper locking reed assembly 301 is mounted on the upper seat plate, and the lower locking reed assembly 301 is mounted on the lower seat plate. A vertical plate is fixed between the upper seat plate and the lower seat plate. Both the upper seat plate and the lower seat plate are provided with through holes for the flat yarn to pass through.

[0057] In some examples, a method for laying a carbon fiber continuous weft placement device includes the following steps:

[0058] S1. First, the weft placement trolley 3 slides along the guide rail 5 to one of the positioning assemblies 2 on one side of the weft placement platform 1. The second linear drive mechanism 3021 is activated to drive the yarn pressing plate 3022 to press the flat yarn toward the needle block 201. The needle block 201 penetrates the flat yarn to position the flat yarn, and then the yarn pressing plate 3022 moves upward.

[0059] S2, then the third linear drive mechanism 203 drives the straight needle body 202 to press against the needle block 201 to confine the flat wire on the needle block 201;

[0060] S3, the weft placing trolley 3 and the straight needle body 202 move simultaneously in the direction away from the needle block 201 for a distance;

[0061] S4, then start the first linear drive mechanism 3015, the clamping plate 3013 moves so that the second yarn eye 3014 on it is staggered with the first yarn eye 3012 on the yarn separating plate 3011 to lock the flat yarn;

[0062] S5, the weft placing trolley 3 and the straight needle body 202 move back in the direction of the needle block 201, and then both move along the direction of the crossbeam 4 to pull the flat yarn to the winding position, and then the lower locking reed assembly unlocks the flat yarn, the yarn pressing plate 3022 presses the flat yarn toward the needle block 201, the straight needle body 202 penetrates the flat yarn to define its position, and then the upper locking reed assembly unlocks the flat yarn;

[0063] S6. Finally, the weft laying trolley 3 slides to the positioning assembly 2 on the other side of the laying platform 1 to perform continuous laying.

[0064] The above description of the preferred embodiments of the present invention is intended to serve as a guide. Based on the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A carbon fiber continuous weft placement device, characterized in that: include: A laying platform (1) for laying carbon fiber flat yarns; Positioning components (2) are located on both sides of the laying platform (1), and include a needle block (201) for piercing the flat wire to position the flat wire and a straight needle component for pressing against the needle block (201) to confine the flat wire on the needle block (201); The weft-laying trolley (3) comprises at least one locking reed assembly (301) for locking the flat yarn and a yarn pressing assembly (302) which is lifted and arranged below the locking reed assembly (301) to press the flat yarn toward the needle block (201) for insertion.

2. The carbon fiber continuous weft placement device according to claim 1, characterized in that: The locking reed assembly (301) comprises a yarn dividing plate (3011) having a plurality of first yarn dividing eyes (3012), a movably arranged clamping plate (3013) having a plurality of second yarn dividing eyes (3014), and a first linear driving mechanism (3015) connected to the clamping plate (3013) for driving the first yarn dividing eyes (3012) and the second yarn dividing eyes (3014) to align or stagger.

3. The carbon fiber continuous weft placement device according to claim 1, characterized in that: The straight needle assembly comprises a straight needle body (202), a third linear drive mechanism (203) for driving the straight needle body (202) to move closer to or away from the needle block (201), and a fourth linear drive mechanism (204) for driving the straight needle body (202) to move back and forth along the length direction of the needle block (201).

4. The carbon fiber continuous weft placement device according to claim 1, characterized in that: The needle block (201) is inclined from top to bottom in a direction away from the straight needle body (202), and the needle tip of the straight needle body (202) is lower than the needle tip of the needle block (201).

5. The carbon fiber continuous weft placement device according to claim 2, characterized in that: The plurality of first yarn splitting eyes (3012) are arranged obliquely and parallel to each other along the length direction of the yarn splitting plate (3011), and the plurality of second yarn splitting eyes (3014) are arranged obliquely and parallel to each other along the length direction of the clamping plate (3013), and both the first yarn splitting eyes (3012) and the second yarn splitting eyes (3014) are rectangular structures.

6. The carbon fiber continuous weft placement device according to claim 1, characterized in that: The yarn pressing assembly (302) comprises a second linear drive mechanism (3021) and a yarn pressing plate (3022) connected to the output end of the second linear drive mechanism (3021).

7. The carbon fiber continuous weft placement device according to claim 1, characterized in that: It also includes a crossbeam (4) for mounting the positioning assembly (2), a guide rail beam (5) is slidably mounted between the two crossbeams (4), and the weft laying trolley (3) is slidably mounted on the guide rail beam (5).

8. The carbon fiber continuous weft placement device according to claim 3, characterized in that: The fourth linear drive mechanism (204) comprises a motor (2041), a driving pulley (2042) connected to the output end of the motor (2041), a driven pulley (2043), and a synchronous belt (2044) wound between the driving pulley (2042) and the driven pulley (2043), and the third linear drive mechanism (203) is mounted on the synchronous belt (2044).

9. The carbon fiber continuous weft placement device according to claim 1, characterized in that: The weft laying trolley (3) comprises two locking reed assemblies (301), namely an upper locking reed assembly and a lower locking reed assembly, and a plurality of yarn guide rods (303) are arranged between the two.

10. A method for laying carbon fiber continuous weft laying device, characterized in that: The steps include: S1. First, the weft laying trolley (3) slides along the guide rail beam (5) to one of the positioning components (2) on one side of the laying platform (1), and the second linear drive mechanism (3021) is activated to drive the yarn pressing plate (3022) to press the flat yarn toward the needle block (201). The needle block (201) penetrates the flat yarn to position the flat yarn, and then the yarn pressing plate (3022) moves upward; S2, then the third linear drive mechanism (203) drives the straight needle body (202) to press against the needle block (201) to confine the flat wire on the needle block (201); S3, the weft-laying trolley (3) and the straight needle body (202) simultaneously move a distance in a direction away from the needle block (201); S4, then starting the first linear drive mechanism (3015), the clamping plate (3013) moves so that the second yarn eye (3014) thereon is staggered with the first yarn eye (3012) on the yarn dividing plate (3011) to lock the flat yarn; S5, the weft laying trolley (3) and the straight needle body (202) move back in the direction of the needle block (201), and then both move along the direction of the crossbeam (4) to pull the flat yarn to the winding position, and then the lower locking reed assembly unlocks the flat yarn, and the yarn pressing plate (3022) presses down to press the flat yarn toward the needle block (201), and then the upper locking reed assembly unlocks the flat yarn; S6. Finally, the weft laying trolley (3) slides toward the positioning assembly (2) on the other side of the laying platform (1) to perform continuous laying.

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