A circular knitting machine for fabric preparation
By designing a fabric inspection device with a fabric output detection component on a large circular knitting machine, fabric defects can be detected in real time and the process can be adjusted. This solves the problem of fabric defects caused by abnormal yarn tension and needle condition, and achieves efficient utilization of raw materials and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGMEN DAXING KNITTING FACTORY CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-05-26
AI Technical Summary
In the current circular knitting machine process, abnormal yarn tension and needle condition can lead to fabric defects. If these defects are not detected and the fabric is wound up directly, the same defective fabric will continue to be produced, reducing the production yield.
Design a circular knitting machine for fabric preparation, including a fabric inspection component. It uses a telescopic electric rod, a spring rod, and a fabric detector to detect surface defects of the fabric in real time. The detector is moved by a drive motor and a pull rope structure to adjust the production process in a timely manner.
Timely detection of fabric defects can prevent the continuous production of defective products, reduce raw material waste, improve raw material utilization, and reduce loss costs.
Smart Images
Figure CN224280686U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fabric preparation technology, and in particular to a circular knitting machine for fabric preparation. Background Technology
[0002] Circular knitting machines, also known as circular knitting weft knitting machines or circular knitting weft knitting machines, have seen rapid development due to their numerous loop-forming systems, high speed, high output, rapid pattern changes, good fabric quality, fewer processes, and strong product adaptability.
[0003] The existing weaving process is affected by yarn tension, needle condition, etc. Abnormal parameters can lead to fabric defects. If problems occur when the fabric is directly collected without inspection, it is difficult for workers to adjust the weaving process in time, which can easily lead to the continuous production of the same type of defective fabric and reduce the production yield. Utility Model Content
[0004] This utility model discloses a circular knitting machine fabric inspection device for fabric preparation, which aims to solve the technical problem that abnormalities such as yarn tension and needle condition during weaving in existing devices can cause fabric defects, and the fabric is easily produced continuously without inspection when it is directly wound up.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a circular knitting machine for fabric preparation, comprising: a frame, with multiple protective gates fixedly connected to the outer side of the frame; multiple yarn feeders, all located above the frame; multiple yarn guides, all located between the yarn guides and the frame; a weaving system, fixedly connected to the inner top of the frame, the weaving system being used to weave yarn into fabric; two expansion rods, located inside the frame, the expansion rods dividing the woven fabric into two sides; two fabric-forming rollers, both located below the expansion rods, the fabric-forming rollers being used to stack the two fabrics together; a winding shaft, located below the fabric-forming rollers, the winding shaft being used to wind the formed fabric; and two fabric output detection components, both located inside the frame, the fabric output detection components being located on both sides of the expansion rods, the fabric output detection components being used to detect the newly formed fabric.
[0006] In a preferred embodiment, the fabric detection assembly includes: a symmetrical frame located inside the machine frame, with two symmetrical sliding plates fixedly connected to the side of the symmetrical frame near the expansion rod; a connecting frame slidably connected to the side of the sliding plates near the expansion rod; and a fabric detector movably connected to the top of the connecting frame, the fabric detector being used to detect the fabric surface.
[0007] In a preferred embodiment, the fabric detection assembly further includes: a telescopic electric rod, the bottom end of which is fixedly connected to the top of the symmetrical frame, and the top end of which is fixedly connected to the bottom of the connecting frame; a spring rod, located on one side of the telescopic electric rod, the bottom end of which is fixedly connected to the top of the symmetrical frame, and the top end of which is fixedly connected to the bottom of the connecting frame; and a connecting plate, fixedly connected to both sides of the inner wall of the connecting frame, and located below the fabric detector.
[0008] In a preferred embodiment, a drive motor is fixedly connected to the side of the connecting frame near the spring rod. The power output shaft of the drive motor is connected to a rotating shaft via a coupling. A pull rope is movably connected to the outer side of the rotating shaft. A circular hole is provided on the side of the connecting frame near the spring rod. The pull rope is movably connected inside the circular hole, and a sliding seat is fixedly connected to the end of the pull rope away from the rotating shaft. The sliding seat is slidably connected to the outer side of the connecting plate. The top of the sliding seat is fixedly connected to the bottom of the fabric detector. A telescopic rod is fixedly connected to the side of the sliding seat away from the drive motor. A return spring is fixedly connected to the side of the sliding seat away from the drive motor. The return spring is located on the outer side of the telescopic rod. The ends of the telescopic rod and the return spring away from the sliding seat are both fixedly connected to the inner wall of the connecting frame.
[0009] In a preferred embodiment, a ring frame is provided above the machine frame. Multiple fasteners are fixedly connected to the outer side of the ring frame, and all fasteners are fixedly connected to the outer side of the yarn feeder. Multiple fixed rods are fixedly connected to the inner side of the ring frame, and a yarn supply bracket is fixedly connected to the bottom end of each fixed rod. Multiple connecting rods are fixedly connected to the outer side of the yarn supply bracket. An outer ring is fixedly connected to the side of each connecting rod away from the yarn supply bracket, and multiple placement frames are fixedly connected to the outer side of each outer ring. The bottom end of each yarn guide is fixedly connected to the top of the placement frame. A connecting piece is fixedly connected to the bottom end of the yarn supply bracket. The weaving system is located inside and below the connecting piece. The bottom end of the connecting piece is fixedly connected to the top of the machine frame. A ground frame is fixedly connected to the bottom end of the machine frame. A base frame is fixedly connected to the top of the ground frame. A take-up table is fixedly connected to the base frame. Both ends of the fabric roller and the expansion rod are fixedly connected to both sides of the take-up table. The opposite sides of the symmetrical frame are fixedly connected to both sides of the take-up table.
[0010] As can be seen from the above, the circular knitting machine fabric inspection device for fabric preparation provided by this utility model has the technical effect of timely detecting defects and adjusting the process, avoiding the waste of a large amount of raw materials such as yarn due to continuous production of defective products, and accurately removing a small number of defective sections of fabric instead of scrapping the whole roll, thereby significantly reducing raw material loss costs and improving raw material utilization. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of a circular knitting fabric inspection device for fabric preparation proposed in this utility model.
[0012] Figure 2 This is a schematic diagram of the ring frame structure of a circular knitting machine for fabric preparation proposed in this utility model.
[0013] Figure 3 This is a schematic diagram of the weaving system of a circular knitting machine fabric inspection device for fabric preparation proposed in this utility model;
[0014] Figure 4 This is a schematic diagram of the internal structure of the frame of a circular knitting machine for fabric preparation according to the present invention.
[0015] Figure 5 This is a schematic diagram of the fabric output detection component of a circular knitting machine fabric inspection device for fabric preparation proposed in this utility model.
[0016] Figure 6 This is a schematic diagram of the fabric output detection component of a circular knitting machine fabric inspection device for fabric preparation proposed in this utility model.
[0017] In the attached diagram: 1. Frame; 2. Protective gate; 3. Connector; 4. Yarn guide; 5. Yarn feeder; 6. Fixing rod; 7. Yarn supply bracket; 8. Circular frame; 9. Fixing component; 10. Outer ring component; 11. Connecting rod; 12. Placement frame; 13. Weaving system; 14. Expansion rod; 15. Fabric roller; 16. Fabric output detection assembly; 1601. Symmetrical frame; 1602. Slide plate; 1603. Drive motor; 1604. Rotating shaft; 1605. Connecting frame; 1606. Telescopic electric rod; 1607. Spring rod; 1608. Connecting plate; 1609. Fabric detector; 1610. Pull rope; 1611. Sliding seat; 1612. Telescopic rod; 1613. Return spring; 17. Receiving platform; 18. Base frame; 19. Ground frame; 20. Winding shaft. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0019] The fabric inspection device for circular knitting machines disclosed in this utility model is mainly used in scenarios where abnormalities in yarn tension, needle condition, etc., during weaving in existing devices can lead to fabric defects. If the fabric is not inspected and is directly wound up, it is easy to continuously produce fabrics with the same defects.
[0020] Reference Figures 1-6A circular knitting fabric inspection device for fabric preparation includes: a frame 1, with multiple protective gates 2 fixedly connected to the outer side of the frame 1; multiple yarn feeders 5, all located above the frame 1; multiple yarn guides 4, all located between the yarn guides 4 and the frame 1; a weaving system 13, fixedly connected to the inner top of the frame 1, used to weave yarn into fabric; two expansion rods 14, located inside the frame 1, which divide the woven fabric into two sides; two fabric forming rollers 15, both located below the expansion rods 14, used to stack the two fabrics together; a winding shaft 20, located below the fabric forming rollers 15, used to wind the formed fabric; and two fabric output detection components 16, both located inside the frame 1, located on both sides of the expansion rods 14, used to inspect the newly formed fabric.
[0021] Reference Figures 4-6 In a preferred embodiment, the fabric detection assembly 16 includes: a symmetrical frame 1601 located inside the frame 1, with two symmetrical sliding plates 1602 fixedly connected to the side of the symmetrical frame 1601 near the expansion rod 14; a connecting frame 1605 slidably connected to the side of the sliding plate 1602 near the expansion rod 14; and a fabric detector 1609 movably connected to the top of the connecting frame 1605, which is used to detect the fabric surface.
[0022] In this solution, the fabric detection component 16 further includes: a telescopic electric rod 1606, the bottom end of which is fixedly connected to the top end of the symmetrical frame 1601, and the top end of the telescopic electric rod 1606 is fixedly connected to the bottom end of the connecting frame 1605; a spring rod 1607, located on one side of the telescopic electric rod 1606, the bottom end of the spring rod 1607 is fixedly connected to the top end of the symmetrical frame 1601, and the top end of the spring rod 1607 is fixedly connected to the bottom end of the connecting frame 1605; and a connecting plate 1608, fixedly connected to both sides of the inner wall of the connecting frame 1605, and the connecting plate 1608 is located below the fabric detector 1609.
[0023] In this design, a drive motor 1603 is fixedly connected to the side of the connecting frame 1605 near the spring rod 1607. The power output shaft of the drive motor 1603 is connected to a rotating shaft 1604 via a coupling. A pull rope 1610 is movably connected to the outer side of the rotating shaft 1604. A circular hole is provided on the side of the connecting frame 1605 near the spring rod 1607. The pull rope 1610 is movably connected inside the circular hole, and a sliding seat 1611 is fixedly connected to the end of the pull rope 1610 away from the rotating shaft 1604. The sliding seat 1611 is movably connected to the outside of the connecting plate 1608. The top end of the sliding seat 1611 is fixedly connected to the bottom end of the fabric detector 1609. A telescopic rod 1612 is fixedly connected to the side of the sliding seat 1611 away from the drive motor 1603. A return spring 1613 is fixedly connected to the side of the sliding seat 1611 away from the drive motor 1603. The return spring 1613 is located outside the telescopic rod 1612. The ends of the telescopic rod 1612 and the return spring 1613 away from the sliding seat 1611 are both fixedly connected to the inner wall of the connecting frame 1605.
[0024] The fabric inspection component 16 promptly detects defects and adjusts the process, avoiding the waste of a large amount of raw materials such as yarn due to the continuous production of defective products. At the same time, it accurately removes a small number of defective sections of fabric instead of scrapping the entire roll, which greatly reduces the cost of raw material loss and improves the utilization rate of raw materials.
[0025] Reference Figures 1-5 In a preferred embodiment, a ring frame 8 is provided above the frame 1. Multiple fixing members 9 are fixedly connected to the outer side of the ring frame 8, all of which are fixedly connected to the outer side of the yarn feeder 5. Multiple fixing rods 6 are fixedly connected to the inner side of the ring frame 8. A yarn supply bracket 7 is fixedly connected to the bottom end of each fixing rod 6. Multiple connecting rods 11 are fixedly connected to the outer side of the yarn supply bracket 7. An outer ring member 10 is fixedly connected to the side of each connecting rod 11 away from the yarn supply bracket 7. Multiple placement brackets 12 are fixedly connected to the outer side of each outer ring member 10. The yarn guide 4... The bottom ends of all are fixedly connected to the top of the placement frame 12. The bottom end of the yarn supply bracket 7 is fixedly connected to the connector 3. The weaving system 13 is located inside the lower part of the connector 3. The bottom end of the connector 3 is fixedly connected to the top of the frame 1. The bottom end of the frame 1 is fixedly connected to the ground frame 19. The top end of the ground frame 19 is fixedly connected to the base frame 18. The base frame 18 is fixedly connected to the collecting platform 17. The two ends of the fabric roller 15 and the expansion rod 14 are fixedly connected to the two sides of the collecting platform 17. The opposite side of the symmetrical frame 1601 is fixedly connected to the two sides of the collecting platform 17.
[0026] Working principle: Before production, the yarn first passes through the yarn guide 4. The yarn guide 4 uses its own structure to initially guide the yarn, keeping it in an orderly state and preventing tangling and deviation. The yarn then enters the yarn feeder 5. The yarn feeder 5 precisely controls the yarn feeding speed and tension according to the production needs of the knitting system 13, stably feeding the yarn to the knitting system 13 and providing a suitable yarn supply for the knitting process. The knitting system 13 gradually forms the fabric by adjusting the movement trajectory of the knitting needles, the configuration of the cams, and the yarn feeding pattern. After the knitted fabric is output from the knitting system 13, it enters the machine frame 1 and comes into contact with the expansion rod 14. The expansion rod 14 utilizes its own structure (such as the spacing between the rods, the surface curvature, etc.) to expand the fabric. The newly woven fabric is expanded to initially separate the originally bonded double-sided fabric, allowing the fabric width to unfold. This facilitates comprehensive inspection by the subsequent fabric detection component 16 and prepares the fabric for stacking by the fabric roller 15, preventing wrinkles and overlaps from affecting inspection and subsequent finishing. When the expanded fabric reaches the inspection position, the telescopic electric rod 1606 extends or shortens according to the fabric thickness and inspection requirements, driving the connecting frame 1605 to move up and down along the slide plate 1602. The spring rod 1607 moves synchronously, using elasticity to buffer the impact of the moving connecting frame 1605 and help maintain its stability, allowing the fabric detector 16 to... 09. To ensure detection accuracy, the device is brought close to the fabric surface. The drive motor 1603 starts, rotating the rotating shaft 1604 and retracting the pull rope 1610. When retracting the rope, the pull rope 1610 pulls the sliding seat 1611 along the connecting plate 1608 towards the drive motor 1603, compressing the telescopic rod 1612 and stretching the return spring 1613. When releasing the rope, the return spring 1613 recovers its elasticity, pushing the sliding seat 1611 to slide in the opposite direction. The telescopic rod 1612 assists in the reset, causing the sliding seat 1611 to drive the fabric detector 1609 to reciprocate horizontally. The fabric detector 1609 moves with the sliding seat 1611, traversing the fabric surface to identify fabric holes and yarn defects. Defects such as uneven lines and color differences are detected and fed back in real time, facilitating timely production adjustments. The inspected double-sided fabric continues to be conveyed downwards to the fabric roller 15. The fabric roller 15, through its own rotation, uses the squeezing and conveying action of the roller body to re-fold the double-sided fabric separated by the expansion rod 14. It also sorts out any small fabric misalignments or wrinkles that may have occurred after inspection, restoring the fabric to a flat and fitted state. The folded and sorted fabric is finally conveyed to the winding shaft 20, where the formed fabric is continuously wound onto the shaft. The winding shaft 20 precisely controls the winding speed and tension according to the fabric production speed, keeping the wound fabric roll uniform and tight, which is convenient for subsequent storage, transportation and processing.
[0027] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.
Claims
1. A circular knitting fabric inspection device for fabric preparation, characterized in that, include: The frame (1) has multiple protective gates (2) fixedly connected to its outer side; multiple yarn feeders (5) are located above the frame (1); multiple yarn guides (4) are located between the yarn guides (4) and the frame (1); a weaving system (13) is fixedly connected to the inner side of the top of the frame (1), and the weaving system (13) is used to weave the yarn into fabric; two expansion rods (14) are located inside the frame (1), and the expansion rods (14) divide the woven fabric into sections. Double-sided; two fabric rollers (15), both located below the expansion rod (14), the fabric rollers (15) are used to stack the two fabrics together; a winding shaft (20), located below the fabric rollers (15), the winding shaft (20) is used to wind the formed fabric; two fabric output detection components (16), both located inside the frame (1), the fabric output detection components (16) are located on both sides of the expansion rod (14), the fabric output detection components (16) are used to detect the newly formed fabric.
2. The fabric inspection device for a circular knitting machine for fabric preparation according to claim 1, characterized in that, The fabric detection component (16) includes: a symmetrical frame (1601) located inside the frame (1), with two symmetrical sliding plates (1602) fixedly connected to the side of the symmetrical frame (1601) near the expansion rod (14); a connecting frame (1605) slidably connected to the side of the sliding plate (1602) near the expansion rod (14); and a fabric detector (1609) movably connected to the top of the connecting frame (1605), which is used to detect the fabric surface.
3. The circular knitting fabric inspection device for fabric preparation according to claim 2, characterized in that, The fabric detection component (16) further includes: a telescopic electric rod (1606), the bottom end of which is fixedly connected to the top end of the symmetrical frame (1601), and the top end of the telescopic electric rod (1606) is fixedly connected to the bottom end of the connecting frame (1605); a spring rod (1607), located on one side of the telescopic electric rod (1606), the bottom end of the spring rod (1607) is fixedly connected to the top end of the symmetrical frame (1601), and the top end of the spring rod (1607) is fixedly connected to the bottom end of the connecting frame (1605); and a connecting plate (1608), which is fixedly connected to both sides of the inner wall of the connecting frame (1605), and the connecting plate (1608) is located below the fabric detector (1609).
4. The circular knitting fabric inspection device for fabric preparation according to claim 3, characterized in that, A drive motor (1603) is fixedly connected to the side of the connecting frame (1605) near the spring rod (1607). The power output shaft of the drive motor (1603) is connected to a rotating shaft (1604) via a coupling. A pull rope (1610) is movably connected to the outside of the rotating shaft (1604). A circular hole is provided on the side of the connecting frame (1605) near the spring rod (1607). The pull rope (1610) is movably connected inside the circular hole, and a sliding seat (1611) is fixedly connected to the end of the pull rope (1610) away from the rotating shaft (1604). The sliding seat (1611) is slidably connected. On the outside of the connecting plate (1608), the top of the sliding seat (1611) is fixedly connected to the bottom of the fabric detector (1609). A telescopic rod (1612) is fixedly connected to the side of the sliding seat (1611) away from the drive motor (1603). A return spring (1613) is fixedly connected to the side of the sliding seat (1611) away from the drive motor (1603). The return spring (1613) is located outside the telescopic rod (1612). The ends of the telescopic rod (1612) and the return spring (1613) away from the sliding seat (1611) are both fixedly connected to the inner wall of the connecting frame (1605).
5. The circular knitting fabric inspection device for fabric preparation according to claim 1, characterized in that, A ring frame (8) is provided above the frame (1). Multiple fasteners (9) are fixedly connected to the outer side of the ring frame (8). All fasteners (9) are fixedly connected to the outer side of the yarn feeder (5). Multiple fixing rods (6) are fixedly connected to the inner side of the ring frame (8). A yarn supply bracket (7) is fixedly connected to the bottom end of each fixing rod (6).
6. The fabric inspection device for a circular knitting machine for fabric preparation according to claim 5, characterized in that, Multiple connecting rods (11) are fixedly connected to the outside of the yarn supply bracket (7). The side of the connecting rod (11) away from the yarn supply bracket (7) is fixedly connected to an outer ring (10). Multiple placement racks (12) are fixedly connected to the outside of the outer ring (10). The bottom end of the yarn guide (4) is fixedly connected to the top of the placement rack (12). The bottom end of the yarn supply bracket (7) is fixedly connected to a connector (3). The weaving system (13) is located inside and below the connector (3). The bottom end of the connector (3) is fixedly connected to the top of the frame (1).
7. The circular knitting fabric inspection device for fabric preparation according to claim 4, characterized in that, The bottom of the frame (1) is fixedly connected to a ground frame (19), the top of the ground frame (19) is fixedly connected to a base frame (18), a collecting platform (17) is fixedly connected to the base frame (18), and both ends of the fabric roller (15) and the expansion rod (14) are fixedly connected to the two sides of the collecting platform (17), and the opposite side of the symmetrical frame (1601) is fixedly connected to the two sides of the collecting platform (17).