A yarn feeding machine and a yarn feeding method thereof

Abstract

The application discloses a yarn feeding machine, which comprises a main frame, a fixed frame and a sliding frame capable of controlling yarn passing resistance and installed on the main frame, wherein the fixed frame and the sliding frame are both provided with multiple yarn passing layers, each of which is capable of allowing multiple yarns to pass through side by side, the sliding frame is installed at the rear of the fixed frame and is capable of sliding forward and backward on the main frame, and the yarns are fed into a laminating machine from the yarn frame by the sliding frame and the fixed frame from the rear to the front. Since the fixed frame and the sliding frame are both provided with multiple yarn passing layers, each of which is capable of allowing multiple yarns to pass through side by side, and the fixed frame and the sliding frame are capable of controlling yarn passing resistance, all the yarns can be controlled to be fed under the same resistance, so that the yarns can be fed into the laminating machine in a large amount and in a dense manner, the tension of the yarns is uniform, the postures of the yarns are consistent, and the yarns will not be entangled or knotted.

Description

TECHNICAL FIELD

[0001] The present application relates to a yarn feeding machine and a yarn feeding method thereof, and belongs to the technical field of composite material compression molding. BACKGROUND

[0002] Before a plurality of yarns are compressed and molded into a composite material blank (square or rectangular) by a laminating machine, the problem of how to make a large number of single yarns enter the mold cavity of the laminating machine from the creel according to a certain distribution must be solved. It is required that the yarns do not entangle and knot during entering the laminating machine, and the tension of each yarn before entering the mold cavity of the laminating machine is not balanced and the posture is inconsistent. However, due to the inconsistent resistance of the loose winding of the spindle and other factors, the yarns entering the laminating machine have different tensions, which are manifested as some yarns being tight and straight, and some yarns being loose and oscillating to different degrees, which are prone to entangle and knot with the yarns on the side.

[0003] In order to solve the above problems, various technical solutions for promoting uniform yarn feeding have been adopted in the industry, but these solutions involve complex and loose structures, especially they cannot solve the problem of feeding a large number of dense yarns with consistent postures to the laminating machine.

[0004] The present application aims to solve the above problems.

[0005] In order to solve the above problems more specifically, we have made a relevant search on the prior art and obtained a patent document with the application number 202311140590.3, which discloses a tensioning device for warp yarn processing, comprising a base, the top end of which is fixedly connected with a machine body, the top end of the base is fixedly connected with a sliding frame, the inside of the sliding frame is provided with a warp beam mechanism, the sliding frame and the front roller are provided with a tension adjusting device, the tension adjusting device comprises a constant tension mechanism and a tension adjusting mechanism, the constant tension mechanism is arranged between the warp beam mechanism and the front roller, and the tension adjusting mechanism is arranged at the top end of the sliding frame. The constant tension mechanism and the tension adjusting mechanism are matched and arranged, which can drive the warp beam roller and the front roller to rotate synchronously, and the two can transport the cloth at the same speed, so that the warp yarn feeding is uniform, the tension is uniform throughout the weaving process, the cloth surface is very smooth, and the tension adjusting mechanism can adjust the position of the tension roller, so as to adjust the tension of the whole device for different types of warp yarns, thereby having a wider application range.

[0006] From the above, it can be seen that although this technical solution can also solve the problem of uniform yarn feeding, it cannot solve the problem of uniform feeding of a large number of dense yarns, and the technical measures of the present application have substantial differences from those of the invention. SUMMARY

[0007] The technical problem to be solved by the present application is how to feed a large number of dense yarns with uniform tension and consistent posture to the laminating machine.

[0008] To solve the above problems, the technical scheme of the present application is:

[0009] A yarn feeding machine comprises a main frame, a fixed frame and a sliding frame capable of controlling the yarn passing resistance, which are installed on the main frame, the fixed frame and the sliding frame each have multiple yarn passing layers, each yarn passing layer is parallel for multiple yarns to pass through, the sliding frame is installed at the rear of the fixed frame and is capable of sliding forward and backward on the main frame, and the yarns are fed into a laminating machine from the creel, through the sliding frame and the fixed frame from back to front.

[0010] Further, the main frame has a rectangular frame, the fixed frame and the sliding frame are installed in the frame, and a horizontal telescopic cylinder is arranged between the rear side of the sliding frame and the rear frame edge of the frame to push the sliding frame to slide forward and backward.

[0011] Further, the sliding frame comprises a front positioning frame one, a rear positioning frame one and a lifting frame one between the front positioning frame one and the rear positioning frame one, the front positioning frame one, the lifting frame one and the rear positioning frame one each have multiple horizontal yarn passing windows formed by multiple horizontal rods separated vertically, the corresponding yarn passing windows of the front positioning frame one, the lifting frame one and the rear positioning frame one constitute a yarn passing layer, when the lifting frame one is completely lowered, the corresponding yarn passing windows of the front positioning frame one, the lifting frame one and the rear positioning frame one are in the same plane, and when the lifting frame one is raised, all the yarn passing windows of the lifting frame one are synchronously raised higher than the corresponding yarn passing windows of the front positioning frame one and the rear positioning frame one.

[0012] Further, the sliding frame further comprises a vertical separation frame arranged in front of the front positioning frame one, the vertical separation frame has multiple vertical rods, and each vertical rod keeps the adjacent yarns passing through the yarn passing windows of the front positioning frame one, the lifting frame one and the rear positioning frame one at a specified horizontal interval.

[0013] Further, a jacking cylinder one is arranged below the lifting frame one to push the lifting frame one to rise and fall.

[0014] Further, a U-shaped mounting seat one is arranged below the sliding frame, the two sides of the U-shaped mounting seat one are respectively fixed on the bottom frame of the front positioning frame one and the rear positioning frame one, and the U-shaped mounting seat one is capable of sliding forward and backward with the sliding frame, and the jacking cylinder one is installed in the U-shaped space of the U-shaped mounting seat one.

[0015] Further, the fixed frame comprises a front positioning frame two, a rear positioning frame two and a lifting frame two between the front positioning frame two and the rear positioning frame two, the front positioning frame two, the lifting frame two and the rear positioning frame two all have a plurality of horizontal yarn passing windows formed by a plurality of horizontal rods separated vertically, the corresponding yarn passing windows of the front positioning frame two, the lifting frame two and the rear positioning frame two constitute a yarn passing layer, when the lifting frame two is completely lowered, the corresponding yarn passing windows of the front positioning frame two, the lifting frame two and the rear positioning frame two are in the same plane, when the lifting frame two is raised, all the yarn passing windows of the lifting frame two are synchronously raised higher than the corresponding yarn passing windows of the front positioning frame two and the rear positioning frame two.

[0016] Further, a jacking cylinder two is arranged below the lifting frame two to push the lifting frame two to rise and fall.

[0017] Further, a U-shaped mounting seat two is arranged below the fixed frame, two sides of the U-shaped mounting seat two are fixed on the bottom frames of the front positioning frame two and the rear positioning frame two respectively, and the jacking cylinder two is installed in the U-shaped space of the U-shaped mounting seat two.

[0018] The use method of the yarn feeding machine comprises the following steps.

[0019] Firstly, all the yarns are fed into the laminating machine from the creel through the sliding frame and the fixed frame from back to front, and the sliding frame is retracted to the starting position.

[0020] Secondly, the resistance of the yarns passing through the fixed frame is reduced, the resistance of the yarns passing through the sliding frame is increased or the yarns are completely clamped, and then the sliding frame is moved forward.

[0021] Thirdly, the resistance of the yarns passing through the fixed frame is increased or the yarns are completely clamped, the resistance of the yarns passing through the sliding frame is reduced, and then the sliding frame is retracted to the starting position.

[0022] The second and third steps are repeated. Advantages

[0023] 1. Since the fixed frame and the sliding frame both have multiple yarn passing layers, each yarn passing layer can pass multiple yarns side by side, and the fixed frame and the sliding frame can control the yarn passing resistance, so that all the yarns can be fed under the same resistance, thereby the yarns can be fed to the laminating machine in a large amount, densely, with uniform tension and consistent posture, and without entanglement and knot.

[0024] 2. The fixed frame and the sliding frame with the yarn passing resistance control function are integrated and installed in a main frame, so that the structure becomes compact and simple.

[0025] 3. When threading the yarn, the sliding frame and the fixed frame are close to each other, which is convenient for threading operation at the beginning of operation. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 This is a three-dimensional schematic diagram of the yarn feeding machine.

[0027] Figure 2 for Figure 1 A partial schematic diagram;

[0028] Figure 3 The figure shows a cross-sectional schematic diagram of the sliding frame, in which the lifting frame is lifted upward by the lifting cylinder, and the yarn is in an inverted V shape. This situation increases the resistance to yarn passage.

[0029] Figure 4 The figure shows a cross-sectional schematic diagram of the fixed frame. The lifting frame 2 is shown falling, and its yarn passage window is level with the yarn passage windows of the front positioning frame 2 and the rear positioning frame 2 on both sides. At this time, the yarn passage resistance is minimal.

[0030] In the diagram: 1. Main frame; 101. Frame; 2. Sliding frame; 201. Front positioning frame one; 202. Lifting frame one; 203. Rear positioning frame one; 204. Vertical partition frame; 2041. Vertical bar; 205. Lifting cylinder one; 206. U-shaped mounting seat one; 3. Fixed frame; 301. Front positioning frame two; 302. Lifting frame two; 303. Rear positioning frame two; 304. Lifting cylinder two; 305. U-shaped mounting seat two; 4. Horizontal telescopic cylinder; 5. Crossbar; 6. Window lattice; 7. Yarn. Detailed Implementation

[0031] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0032] like Figure 1 As shown, a yarn feeding machine includes a main frame 1, a fixed frame 3 and a sliding frame 2 mounted on the main frame 1 to control the yarn feeding resistance. Both the fixed frame 3 and the sliding frame 2 have multiple yarn feeding layers, and multiple yarns 7 are fed through each yarn feeding layer side by side. The sliding frame 2 is installed behind the fixed frame 3 and can slide back and forth on the main frame 1. The yarns 7 are fed from the yarn frame from back to front through the sliding frame 2 and the fixed frame 3 into the laminator. The application includes the following steps: First, all yarns 7 are fed from back to front through the sliding frame 2 and fixed frame 3 into the laminator, with the sliding frame 2 retracting back to the starting position. Second, the resistance of yarns 7 passing through the fixed frame 3 is reduced, while the resistance of yarns 7 passing through the sliding frame 2 is increased or the yarns are completely clamped, and then the sliding frame 2 is moved forward. Third, the resistance of yarns 7 passing through the fixed frame 3 is increased or the yarns 7 are completely clamped, while the resistance of yarns 7 passing through the sliding frame 2 is reduced, and then the sliding frame 2 is moved back to the starting position. The second and third steps are repeated. Because both the fixed frame 3 and the sliding frame 2 have multiple yarn-passing layers, and each yarn-passing layer can accommodate multiple yarns 7 side by side, and the fixed frame 3 and the sliding frame 2 can control the yarn-passing resistance, all yarns can be conveyed under the same resistance, thus enabling the laminator to deliver a large quantity of yarns with uniform tension and consistent posture, without tangling or knotting.

[0033] The following are further measures.

[0034] As Figure 1 As shown in Fig. 4, the main frame 1 has a rectangular frame 101, the fixed frame 3 and the sliding frame 2 are installed in the frame 101, and a horizontal telescopic cylinder 4 is arranged between the rear side of the sliding frame 2 and the rear frame edge of the frame 101 to push the sliding frame 2 to slide forward and backward. The horizontal telescopic cylinder 4 can be a hydraulic cylinder or a pneumatic cylinder, or an electric cylinder.

[0035] The sliding frame 2 includes a front positioning frame 201, a rear positioning frame 203, and a lifting frame 202 located between the front positioning frame 201 and the rear positioning frame 203. The front positioning frame 201, the lifting frame 202, and the rear positioning frame 203 all have a plurality of horizontal yarn passing windows 6 formed by a plurality of horizontal rods 5 vertically separated. The corresponding yarn passing windows 6 of the front positioning frame 201, the lifting frame 202, and the rear positioning frame 203 form a yarn passing layer. When the lifting frame 202 is fully lowered, the corresponding yarn passing windows 6 of the front positioning frame 201, the lifting frame 202, and the rear positioning frame 203 are in the same plane, and the resistance of the yarn passing is minimized. When the lifting frame 202 is raised, all the yarn passing windows 6 of the lifting frame 202 are synchronously raised higher than the corresponding yarn passing windows 6 of the front positioning frame 201 and the rear positioning frame 203, forcing the yarn to pass through the yarn passing windows 6 of the rear positioning frame 203, the lifting frame 202, and the front positioning frame 201 in turn in an inverted V shape. The frictional resistance of the yarn 7 with the horizontal rods 5 of each yarn passing window 6 is increased, thereby realizing the yarn passing resistance of the yarn passing through the yarn passing layer or even being completely clamped.

[0036] The sliding frame 2 further includes a vertical partition frame 204 arranged in front of the front positioning frame 201. The vertical partition frame 204 has a plurality of vertical rods 2041, each of which maintains a predetermined horizontal spacing between adjacent yarns passing through the yarn passing windows 6 of the front positioning frame 201, the lifting frame 202, and the rear positioning frame 203.

[0037] A jacking cylinder 205 is arranged below the lifting frame 202 to push the lifting frame 202 to rise and fall. The jacking cylinder 205 can be a hydraulic cylinder or a pneumatic cylinder, or an electric cylinder.

[0038] A U-shaped mounting seat 206 is arranged below the sliding frame 2. The two sides of the U-shaped mounting seat 206 are respectively fixed to the bottom frame of the front positioning frame 201 and the rear positioning frame 203, and can slide forward and backward with the sliding frame 2. The jacking cylinder 205 is installed in the U-shaped space of the U-shaped mounting seat 206.

[0039] The fixed frame 3 comprises a front positioning frame 301, a rear positioning frame 303 and a lifting frame 302 between the front positioning frame 301 and the rear positioning frame 303, and the front positioning frame 301, the lifting frame 302 and the rear positioning frame 303 all have a plurality of horizontal yarn passing windows 6 formed by a plurality of horizontal rods 5 separated vertically, and the corresponding yarn passing windows 6 of the front positioning frame 301, the lifting frame 302 and the rear positioning frame 303 constitute a yarn passing layer, when the lifting frame 302 is fully lowered, the corresponding yarn passing windows 6 of the front positioning frame 301, the lifting frame 302 and the rear positioning frame 303 are in the same plane, and the resistance of the yarn passing is the smallest. When the lifting frame 302 is lifted, all the yarn passing windows 6 of the lifting frame 302 are lifted synchronously higher than the corresponding yarn passing windows 6 of the front positioning frame 301 and the rear positioning frame 303, so as to force the yarn to pass through the yarn passing windows 6 of the rear positioning frame 303, the yarn passing windows 6 of the lifting frame 302 and the yarn passing windows 6 of the front positioning frame 301 in turn in the shape of an inverted V, the frictional resistance of the yarn 7 with the horizontal rods 5 of the yarn passing windows 6 is increased, so as to realize the yarn passing resistance of the yarn passing through the yarn passing layer or even the yarn is completely clamped.

[0040] A jacking cylinder 304 is arranged below the lifting frame 302 to lift the lifting frame 302. Similarly, the jacking cylinder 304 can be a hydraulic cylinder or an air cylinder, or an electric cylinder.

[0041] A U-shaped mounting seat 305 is arranged below the fixed frame 3, and the two sides of the U-shaped mounting seat 305 are fixed on the bottom frames of the front positioning frame 301 and the rear positioning frame 303 respectively, and the jacking cylinder 304 is arranged in the U-shaped space of the U-shaped mounting seat 305.

[0042] The above embodiments are only used for more clearly describing the present application, and cannot be regarded as limiting the protection scope of the present application, and any equivalent modification shall be regarded as falling within the protection scope of the present application.

Claims

1. A yarn feeding machine characterized by: The invention relates to a creeling device for creeling yarns, comprising a main frame (1), a fixed frame (3) capable of controlling the resistance of the yarns and a sliding frame (2) installed on the main frame (1), the fixed frame (3) and the sliding frame (2) each having multiple layers of yarns, each layer of yarns being provided for multiple yarns (7) to pass through side by side, the sliding frame (2) being installed behind the fixed frame (3) and capable of sliding forward and backward on the main frame (1), the yarns (7) being sent from the creeling device to a laminating machine in front by passing through the sliding frame (2) and the fixed frame (3) from back to front, the sliding frame (2) comprising a front positioning frame (201), a rear positioning frame (203) and a lifting frame (202) located between the front positioning frame (201) and the rear positioning frame (203), the front positioning frame (201), the lifting frame (202) and the rear positioning frame (203) each having multiple horizontal yarn passing windows (6) formed by multiple horizontal rods (5) separated vertically, the horizontal yarn passing windows (6) of the front positioning frame (201), the lifting frame (202) and the rear positioning frame (203) corresponding to each other form a layer of yarns, when the lifting frame (202) is completely lowered, the horizontal yarn passing windows (6) corresponding to the front positioning frame (201), the lifting frame (202) and the rear positioning frame (203) are in the same plane, when the lifting frame (202) is lifted, all the horizontal yarn passing windows (6) of the lifting frame (202) are lifted synchronously higher than the horizontal yarn passing windows (6) corresponding to the front positioning frame (201) and the rear positioning frame (203), the sliding frame (2) further comprises a vertical partition frame (204) located in front of the front positioning frame (201), the vertical partition frame (204) having multiple vertical rods (2041), each vertical rod (2041) keeping the adjacent yarns passing through the horizontal yarn passing windows (6) of the front positioning frame (201), the lifting frame (202) and the rear positioning frame (203) at a predetermined horizontal interval, the fixed frame (3) comprises a front positioning frame (301), a rear positioning frame (303) and a lifting frame (302) located between the front positioning frame (301) and the rear positioning frame (303), the front positioning frame (301), the lifting frame (302) and the rear positioning frame (303) each having multiple horizontal yarn passing windows (6) formed by multiple horizontal rods (5) separated vertically, the horizontal yarn passing windows (6) of the front positioning frame (301), the lifting frame (302) and the rear positioning frame (303) corresponding to each other form a layer of yarns, when the lifting frame (302) is completely lowered, the horizontal yarn passing windows (6) corresponding to the front positioning frame (301), the lifting frame (302) and the rear positioning frame (303) are in the same plane, when the lifting frame (302) is lifted, all the horizontal yarn passing windows (6) of the lifting frame (302) are lifted synchronously higher than the horizontal yarn passing windows (6) corresponding to the front positioning frame (301) and the rear positioning frame (303).

2. The yarn feeder of claim 1, wherein: The main frame (1) has a rectangular frame (101), the fixed frame (3) and the sliding frame (2) are installed in the frame (101), the rear side of the sliding frame (2) and the rear frame of the frame (101) are provided with a horizontal telescopic cylinder (4) for pushing the sliding frame (2) to slide forward and backward.

3. The yarn feeder of claim 1, wherein: The lower side of the lifting frame one (202) is provided with a jacking cylinder one (205) for pushing the lifting frame one (202) to lift.

4. The yarn feeder of claim 3, wherein: The lower side of the sliding frame (2) is provided with a U-shaped mounting seat one (206), the two sides of the U-shaped mounting seat one (206) are respectively fixed on the bottom frame of the front positioning frame one (201) and the rear positioning frame one (203), which can slide forward and backward with the sliding frame (2), and the jacking cylinder one (205) is installed in the U-shaped space of the U-shaped mounting seat one (206).

5. The yarn feeder of claim 1, wherein: The lower side of the lifting frame two (302) is provided with a jacking cylinder two (304) for pushing the lifting frame two (302) to lift.

6. The yarn feeder of claim 4, wherein: The lower side of the fixed frame (3) is provided with a U-shaped mounting seat two (305), the two sides of the U-shaped mounting seat two (305) are respectively fixed on the bottom frame of the front positioning frame two (301) and the rear positioning frame two (303), and the jacking cylinder two (304) is installed in the U-shaped space of the U-shaped mounting seat two (305).

7. The method of using a yarn feeder according to any one of claims 1-6, wherein The method comprises the following steps: First step, all the yarns (7) are sent into the laminating machine from the back to the front through the sliding frame (2) and the fixed frame (3) from the yarn frame, and the sliding frame (2) is retracted to the starting position; Second step, the resistance of the yarn (7) passing through the fixed frame (3) is reduced, the resistance of the yarn (7) passing through the sliding frame (2) is increased or the yarn is completely clamped, and then the sliding frame (2) is made to slide forward; Third step, the resistance of the yarn (7) passing through the fixed frame (3) is increased or the yarn (7) is completely clamped, and the resistance of the yarn (7) passing through the sliding frame (2) is reduced, and then the sliding frame (2) is made to retreat to the starting position; The second and third steps are repeated.

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