Efficient yarn shaking device for prepreg and using method of efficient yarn shaking device

Abstract

The invention discloses an efficient yarn shaking device for prepreg and a using method of the efficient yarn shaking device, and relates to the technical field of prepreg processing.The efficient yarn shaking device comprises a supporting frame, a fixing shaft is arranged on the supporting frame, and a plurality of sets of tensioning units arranged in an array mode are arranged on the fixing shaft; each tensioning unit comprises a fixing base arranged on the fixing shaft and an adjusting mechanism arranged on the fixing base, and each adjusting mechanism comprises an annular base capable of sliding on the fixing base in a reciprocating mode. In the invention, through the arrangement of the overall driving mechanism, the overall regulation and control of the yarn tension are realized, the tension of most carbon fiber yarns can be quickly regulated to be consistent, the complexity of manually regulating the tension of the prepreg yarns is effectively reduced, a stable mechanical environment is provided for a yarn shaking process, and the production efficiency is improved. The method is an important premise for ensuring the quality of the prepreg finished product, and lays a foundation for subsequent adjustment of a single yarn.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of prepreg processing, and particularly relates to a high-efficiency yarn shaking device for a prepreg and a use method thereof. BACKGROUND

[0002] In the production and processing process of the prepreg, the yarn shaking process is a crucial link. The prepreg is an intermediate material formed by impregnating continuous fibers in a resin matrix, and the quality thereof directly affects the performance of the subsequent composite material. The uniformity of the tension of the yarn is one of the key factors to ensure the quality of the prepreg. In the yarn shaking process, the yarn needs to be kept at a proper tension to ensure that the yarn can be uniformly arranged and avoid the occurrence of relaxation, wrinkles or excessive tightness. Proper tension helps the resin to fully infiltrate the fibers, improves the impregnation effect of the prepreg, and further improves the mechanical properties of the composite material. Therefore, it has important practical significance to develop a yarn shaking device capable of efficiently and accurately controlling the tension of the yarn.

[0003] At present, the existing yarn shaking equipment has many deficiencies in yarn tension control. On the one hand, some equipment mainly relies on manual tension adjustment of the yarn before shaking, which not only increases the complexity of the operation, but also makes it difficult to ensure that the tension of each yarn is consistent, and uneven tension is likely to occur, thereby affecting the quality of the prepreg. On the other hand, although some equipment has the function of overall tension adjustment, it lacks a local fine-tuning mechanism for individual yarns with insufficient tension. When some yarns have abnormal tension, accurate compensation cannot be made in time, which affects the uniformity of the overall yarn tension. SUMMARY

[0004] To solve the problems raised in the background art, the application provides a high-efficiency yarn shaking device for a prepreg and a use method thereof.

[0005] The object of the application can be achieved by the following technical solutions. A high-efficiency yarn shaking device for a prepreg, comprising a support frame, a fixed shaft is arranged on the support frame, and a plurality of groups of tensioning units arranged in an array are arranged on the fixed shaft. Each group of the tensioning units comprises a fixed seat arranged on the fixed shaft and an adjusting mechanism arranged on the fixed seat, the adjusting mechanism comprises an annular seat capable of reciprocating on the fixed seat, and a plurality of arc-shaped blocks arranged in an annular array and capable of reciprocating along the radial direction of the annular seat are connected to the outer side of the annular seat through a transmission assembly, and the arc-shaped blocks are used to tighten the slack prepreg yarn.

[0006] As a further preferred embodiment of the technical solution, a reset spring is arranged on the fixed seat to reset the annular seat.

[0007] As a further preferred embodiment of the present technical solution: the tensioning unit further comprises an integral driving mechanism, the integral driving mechanism comprises a driving assembly arranged on a support frame, the driving assembly is provided with a transmission shaft, and the transmission shaft is provided with a plurality of push blocks capable of simultaneously pushing the annular seat to move.

[0008] As a further preferred embodiment of the present technical solution: each of the fixed seats is provided with a group of single driving mechanisms, and the single driving mechanisms include a No. 2 connecting seat fixedly connected to the fixed seat, and the No. 2 connecting seat is provided with a driving member, and the driving member is provided with a pulling block for individually moving the corresponding annular seat.

[0009] As a further preferred embodiment of the present technical solution: a No. 1 connecting seat is fixedly connected to the outer wall of each of the arc-shaped blocks, and the No. 1 connecting seat is provided with two straight pulleys arranged in parallel.

[0010] As a further preferred embodiment of the present technical solution: each of the fixed seats is provided with the same number of guide assemblies as the adjustment mechanism groups, and each group of the guide assemblies includes a sliding sleeve fixedly connected to the fixed seat, the interior of the sliding sleeve is slidably connected to a sliding rod, and the upper end of the sliding rod is fixedly connected to the corresponding arc block.

[0011] As a further preferred embodiment of the present technical solution: a plurality of guide wheels are rotatably connected to the support frame, and the support frame is also provided with a shaking roller that can shake up and down relative to the support frame.

[0012] As a further preferred embodiment of the present technical solution: the support frame is further rotatably connected to two limiting rollers arranged in parallel.

[0013] As a further preferred embodiment of the present technical solution: the limiting roller is arranged on one side of the tensioning unit, the guide wheel and the shaking roller are both arranged on the other side of the tensioning unit, and the guide wheel and the shaking roller are staggered.

[0014] As a further preferred embodiment of the present technical solution: a method for using a high-efficiency yarn shaking device for prepreg, specifically comprising the following steps: S1, passing the carbon fiber yarn of the prepreg in sequence between two limiting rollers and between the straight pulleys on the No. 1 connecting seat, and passing in sequence in a clockwise or counterclockwise direction; S2. Push the annular seat to slide on the fixed seat through the push block on the transmission shaft until the tension of most carbon fiber yarns is adjusted to an appropriate value; S3. When it is detected that the tension of individual carbon fiber yarns does not reach the specified standard, the corresponding annular seat is driven to move by a single driving mechanism, so that the relevant arc block adjusts the yarn tension to the specified standard.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the overall control of yarn tension is achieved through the setting of the overall driving mechanism, which can quickly adjust the tension of most carbon fiber yarns to be consistent, effectively reducing the complexity of manual adjustment of the prepreg yarn tension, and providing a stable mechanical environment for the shaking yarn process. It is an important prerequisite for ensuring the quality of prepreg finished products and lays the foundation for subsequent single yarn adjustment.

[0016] 2. In the present invention, on the basis of realizing the initial tension adjustment by the overall driving mechanism, the setting of a single driving mechanism further improves the accuracy and flexibility of yarn tension control, and can independently compensate for individual yarns with insufficient tension without interfering with the overall tensioning state, so that each yarn can reach a more accurate tension standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the present invention Figure 1 ; Figure 3 It is a schematic diagram of the local structure of the present invention Figure 2 ; Figure 4 It is an exploded view of the local structure of the present invention; Figure 5 for Figure 4 A in the middle is an enlarged schematic diagram; Figure 6 It is a schematic diagram of the local structure of the present invention Figure 3 ; Figure 7 It is a schematic diagram of the local structure of the present invention Figure 4 .

[0018] Legend: 1. Support frame; 2. Tensioning unit; 21. Fixed seat; 211. Slide groove; 22. Adjusting mechanism; 221. Annular seat; 222. Return spring; 223. Transmission rod; 224. Rotating seat; 225. Arc block; 226. Connecting seat No. 1; 227. Straight pulley; 228. Slider; 23. Overall driving mechanism; 231. Rotating shaft; 232. Transmission gear; 233. Transmission rack; 234. Connecting block; 235. Transmission shaft; 236. Push block; 24. Single driving mechanism; 241. Connecting seat No. 2; 242. Pull block; 25. Guide assembly; 251. Sleeve; 252. Slide rod; 3. Fixed shaft; 4. Guide wheel; 5. Jitter roller; 6. Limiting roller. DETAILED DESCRIPTION

[0019] The technical solutions of the present application will be described clearly and completely below in connection with the embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0020] Embodiment one: Please refer to Figure 1-Figure 7 The present application provides a high-efficiency yarn shaking device for prepreg, which comprises a support frame 1, a fixed shaft 3 is arranged on the support frame 1, and a plurality of groups of tension units 2 arranged in an array are arranged on the fixed shaft 3. It should be noted that the number of groups of tension units 2 can be set to the same number as the number of yarns shaken each time. Each group of the tension units 2 comprises a fixing seat 21 arranged on the fixed shaft 3 and an adjusting mechanism 22 arranged on the fixing seat 21. The adjusting mechanism 22 comprises an annular seat 221 which can reciprocate on the fixing seat 21. It should be noted that a sliding block 228 is arranged on the inner wall of the annular seat 221, and a sliding groove 211 which cooperates with the sliding block 228 is formed in the fixing seat 21, which limits the annular seat 221. A plurality of arc-shaped blocks 225 arranged in an annular array and capable of reciprocating along the radial direction of the annular seat 221 are connected to the outer side of the annular seat 221 through a transmission assembly, which is used to tighten the slack prepreg yarn. It should be noted that the transmission assembly comprises a transmission rod 223 which is rotatably connected to the annular seat 221, and one rotating seat 224 is fixedly connected to the inner wall of each arc-shaped block 225, and the end of the transmission rod 223 away from the annular seat 221 is rotatably connected to the rotating seat 224.

[0021] In this embodiment, a reset spring 222 is arranged on the fixing seat 21, specifically in the inside of the sliding groove 211, which is used to reset the annular seat 221, and the sliding groove 211 is arranged between the fixing seat 21 and the sliding block 228.

[0022] In this embodiment, the tensioning unit 2 also includes an integral driving mechanism 23, which includes a driving assembly arranged on the support frame 1, and a transmission shaft 235 is provided on the driving assembly, and a plurality of push blocks 236 that can simultaneously push the corresponding annular seat 221 to move are provided on the transmission shaft 235. It should be noted here that the driving assembly includes a driving member arranged on the support frame 1, preferably a servo motor, and the output end of the servo motor is connected to a rotating shaft 231 rotatably arranged on the support frame 1, and a transmission gear 232 is fixedly connected to the rotating shaft 231, and the transmission gear 232 is meshedly connected to a transmission rack 233, and a connecting block 234 is fixedly connected to the transmission rack 233, and the connecting block 234 is fixedly connected to the transmission shaft 235.

[0023] In this embodiment, a No. 1 connecting seat 226 is fixedly connected to the outer wall of each of the arc blocks 225, and two straight pulleys 227 arranged in parallel are provided on the No. 1 connecting seat 226 for allowing the yarn to pass through, and then the tension of the yarn is adjusted by the movement of the arc block 225, and a tension sensor is provided at the position of the No. 1 connecting seat 226 close to the straight pulley 227 for monitoring the tension of the yarn. Since the yarn passes through the straight pulley 227, the tension of the yarn will directly act on the straight pulley 227 during the shaking process, and the arc block 225 is connected to the straight pulley 227. The tension sensor is installed on the arc block 225 near the straight pulley 227, which can accurately sense the changes in the yarn tension, and the tension sensor is electrically connected to the controller arranged on the support frame 1, and the controller is used to control the start and stop of the micro electric push rod and the servo motor. It is a prior art and will not be described in detail.

[0024] In this embodiment, each of the fixed seats 21 is provided with the same number of guide assemblies 25 as the adjustment mechanism 22. Each group of the guide assemblies 25 includes a sliding sleeve 251 fixedly connected to the fixed seat 21. The internal sliding connection of the sliding sleeve 251 is a sliding rod 252. The upper end of the sliding rod 252 is fixedly connected to the corresponding arc block 225. It should be noted here that the purpose of setting the guide assembly 25 is to limit the moving direction of the arc block 225, play a guiding role, and at the same time increase the stability of the arc block 225.

[0025] In this embodiment, the support frame 1 is rotatably connected to a plurality of guide wheels 4, and the support frame 1 is also provided with a shaking roller 5 that can shake up and down relative to the support frame 1. It should be noted here that the shaking roller 5 is used for shaking the prepreg yarn, and the shaking drive method is a prior art, which can refer to the principle of a reciprocating motor, so it will not be described in detail. The support frame 1 is also rotatably connected to two limiting rollers 6 arranged in parallel, and the limiting roller 6 is arranged on one side of the tensioning unit 2, and the guide wheel 4 and the shaking roller 5 are both arranged on the other side of the tensioning unit 2, and the guide wheel 4 and the shaking roller 5 are staggered. By passing the yarn through the two limiting rollers 6, yarn wrinkles during the shaking process are avoided.

[0026] Specifically, the carbon fiber yarn of the prepreg is first passed between the two limiting rollers 6, and then passed between the straight pulleys 227 on each group of No. 1 connecting seats 226 in turn, and it is required that the carbon fiber yarn must pass through the straight pulley 227 on each arc block 225 in each group of tensioning units 2, and pass through in clockwise or counterclockwise order. After that, the servo motor drives the transmission gear 232 on the rotating shaft 231 to rotate, and then the transmission rack 233 pushes the transmission shaft 235 to move through the connecting block 234, and the push block 236 on the transmission shaft 235 pushes the annular seat 221 to move. During this process, the slider 228 slides inside the slide groove 211, and the return spring 222 is compressed until the carbon fiber yarn is adjusted to the appropriate tension, and the movement of the annular seat 221 is immediately stopped. At this point, most of the overall carbon fiber tension is adjusted to be consistent, effectively reducing tension fluctuations caused by manual operation or equipment errors, and providing a stable mechanical environment for the prepreg yarn shaking process.

[0027] Example 2: On the basis of embodiment one, each of the fixed seats 21 is provided with a group of single driving mechanisms 24, and the single driving mechanisms 24 include a No. 2 connecting seat 241 fixedly connected to the fixed seat 21, and the No. 2 connecting seat 241 is provided with a driving member, preferably a micro electric push rod, and it can be connected to an external power supply. It should be noted here that the fixed shaft 3 can be set to a hollow structure for placing the power connection line of the micro electric push rod, and the driving member is provided with a pull block 242 for individually moving the corresponding annular seat 221.

[0028] Specifically, if it is found that the tension of a single carbon fiber yarn does not reach the specified tension during the shaking process, the micro-push rod can be used to drive the adjustment mechanism 22 on it to continue to move until this yarn also reaches the specified tension standard. At this point, an independent compensation function is achieved for individual carbon fiber yarns with insufficient tension, and targeted tightening can be performed without interfering with the overall tensioning state, significantly improving the flexibility and accuracy of tension control, and meeting the high process requirements for fine-tuning of yarn tension.

[0029] A method for using a high-efficiency yarn shaking device for prepreg, specifically comprising the following steps: S1. Carbon fiber yarns of the prepreg are sequentially threaded between two limiting rollers 6 and straight pulleys 227 on a No. 1 connecting seat 226 in each set of tensioning units 2, and are sequentially threaded clockwise or counterclockwise, so that the yarns are in a state to be adjusted; S2. The ring seat 221 is pushed to slide on the fixed seat 21 by the push block 236 on the transmission shaft 235 until the tension of most of the carbon fiber yarns is adjusted to a suitable value; S3. When it is detected that the tension of an individual carbon fiber yarn does not reach the specified standard, the corresponding ring seat 221 is moved by the single driving mechanism 24, so that the related arc block 225 adjusts the yarn tension to the specified standard, achieving independent compensation of a single yarn.

[0030] The above embodiments are only used to illustrate the technical method of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical method of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical method of the present application.

Claims

1. An efficient yarn shaking device for prepreg, comprising a support frame (1), characterized in that: The support frame (1) is provided with a fixed shaft (3), and the fixed shaft (3) is provided with a plurality of groups of tensioning units (2) arranged in an array; Each group of the tensioning units (2) comprises a fixed seat (21) arranged on a fixed shaft (3), and an adjusting mechanism (22) arranged on the fixed seat (21), wherein the adjusting mechanism (22) comprises an annular seat (221) that can slide back and forth on the fixed seat (21), and a plurality of arc-shaped blocks (225) arranged in an annular array and capable of sliding back and forth in a radial direction of the annular seat (221) are connected to the outer side of the annular seat (221) through a transmission assembly, and are used to tighten the loose prepreg yarn.

2. The high-efficiency yarn shaking device for prepreg according to claim 1, characterized in that: A reset spring (222) is provided on the fixed seat (21) for resetting the annular seat (221).

3. The high-efficiency yarn shaking device for prepreg according to claim 2, characterized in that: The tensioning unit (2) further comprises an integral driving mechanism (23), the integral driving mechanism (23) comprising a driving assembly arranged on the support frame (1), a transmission shaft (235) being arranged on the driving assembly, and a plurality of push blocks (236) capable of simultaneously pushing the annular seat (221) to move being arranged on the transmission shaft (235).

4. The high-efficiency yarn shaking device for prepreg according to claim 3, characterized in that: Each of the fixed seats (21) is provided with a set of single driving mechanisms (24), wherein the single driving mechanisms (24) include a second connecting seat (241) fixedly connected to the fixed seat (21), a driving member is provided on the second connecting seat (241), and a pulling block (242) is provided on the driving member for individually moving the corresponding annular seat (221).

5. The high-efficiency yarn shaking device for prepreg according to claim 4, characterized in that: A No. 1 connecting seat (226) is fixedly connected to the outer wall of each arc-shaped block (225), and two straight pulleys (227) arranged in parallel are provided on the No. 1 connecting seat (226).

6. The high-efficiency yarn shaking device for prepreg according to claim 5, characterized in that: Each of the fixed seats (21) is provided with the same number of guide assemblies (25) as the number of groups of the adjustment mechanism (22), and each group of the guide assemblies (25) includes a sliding sleeve (251) fixedly connected to the fixed seat (21), and a sliding rod (252) is slidably connected inside the sliding sleeve (251), and the upper end of the sliding rod (252) is fixedly connected to the corresponding arc block (225).

7. The high-efficiency yarn shaking device for prepreg according to claim 6, characterized in that: A plurality of guide wheels (4) are rotatably connected to the support frame (1), and a shaking roller (5) capable of shaking up and down relative to the support frame (1) is also provided on the support frame (1).

8. The high-efficiency yarn shaking device for prepreg according to claim 7, characterized in that: The support frame (1) is also rotatably connected to two limiting rollers (6) arranged in parallel.

9. The high-efficiency yarn shaking device for prepreg according to claim 8, characterized in that: The limiting roller (6) is arranged on one side of the tensioning unit (2), and the guide wheel (4) and the shaking roller (5) are both arranged on the other side of the tensioning unit (2), and the guide wheel (4) and the shaking roller (5) are staggered.

10. The method for using the high-efficiency yarn shaking device for prepreg according to claim 9, characterized in that: The specific steps include: S1, passing the carbon fiber yarn of the prepreg material sequentially between the two limiting rollers (6) and between the straight pulleys (227) on the No. 1 connecting seat (226), and sequentially passing in a clockwise or counterclockwise direction; S2, pushing the annular seat (221) to slide on the fixed seat (21) through the push block (236) on the transmission shaft (235) until the tension of most carbon fiber yarns is adjusted to a suitable value; S3. When it is detected that the tension of an individual carbon fiber yarn does not reach the specified standard, the corresponding annular seat (221) is driven to move by a single driving mechanism (24), so that the relevant arc block (225) adjusts the yarn tension to the specified standard.

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