Cloth pulling device capable of preventing knitted fabric from being laid in staggered mode

Abstract

The utility model relates to the technical field of spreading machines, and discloses a spreading device capable of preventing knitting fabric from being spread in a staggered mode, which comprises a support, a spreading machine body is arranged at the top end of the support, a feeding frame is arranged at the top end of the support and located beside the spreading machine body, and a fabric dislocation preventing mechanism is arranged at the top end of the feeding frame. The movable frame is driven by the threaded rod to translate, and a dynamic adjustable supporting structure is formed by combining sliding adjustment of the guide rod. According to the design, the distance between the two movable frames and the fixed frame can be adjusted in real time according to the width of the fabric, and transverse deviation in the fabric conveying process is effectively prevented. Meanwhile, the connecting column and the sliding block enable the leveling roller to adapt to fabrics with different thicknesses through the elastic effect of the first spring, and contact between the ironing working face and the fabrics is kept. Precise positioning of fabric conveying is ensured, basic conditions are provided for subsequent wrinkle removal treatment by maintaining stable ironing pressure, and the risk of fabric dislocation is reduced through the synergistic effect of the two.

Description

Technical Field

[0001] The utility model relates to the technical field of cloth spreading machines, in particular to a cloth spreading device for preventing knitted fabrics from being misplaced in spreading. Background Art

[0002] In garment and textile production, knitted fabrics, due to their elastic deformation properties, are prone to lateral misalignment or longitudinal wrinkling during the spreading process due to tension fluctuations, directly affecting the precision of the cut pieces and the quality of the finished product. Traditional fabric spreading devices use a fixed-pitch guide roller assembly to transport the fabric. However, when dealing with knitted fabrics of varying weights and elasticity, they cannot dynamically adjust the spread width to match the fabric's deformation properties, nor can they simultaneously flatten and iron the fabric during the conveying process. Consequently, manual secondary ironing is required after spreading, increasing production costs and exacerbating fabric dimensional instability due to repeated stretching.

[0003] Existing fabric spreading devices suffer from three major flaws: First, the frame structure employs a rigid, fixed mode, requiring only manual replacement of guide rollers to adjust to fabric specifications. This results in low adjustment precision and inability to respond to thickness changes in real time, leading to overpressure and wrinkling of thin fabrics and insufficient flattening of thick fabrics. Second, the ironing module and flattening mechanism are independent of each other, resulting in a long and uneven heat transfer path, which wastes energy and causes fabric fiber hardening due to localized overheating. Third, the pressure control system relies on mechanical limits. When fabric thickness suddenly changes, the rigid contact surface is susceptible to impact loads, causing new wrinkles on thin fabrics or jamming thick fabrics. These issues directly restrict the efficiency and quality of automated knitted fabric spreading. This is particularly true given the surging demand for small-batch, multi-style production in the fast fashion industry, where the inability of existing equipment to balance flexible production with process stability is becoming increasingly prominent. Utility Model Content

[0004] The purpose of the present utility model is to provide a cloth pulling device for preventing the misplacement of knitted fabrics. It not only ensures the precise positioning of fabric transportation, but also provides basic conditions for subsequent wrinkle removal by maintaining a stable ironing pressure. The synergistic effect of the two reduces the risk of fabric misplacement.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cloth-pulling device for preventing the dislocation of knitted fabrics, comprising a support, a cloth-pulling machine body is provided at the top of the support, a loading rack is provided at the top of the support, and the loading rack is located next to the cloth-pulling machine body, and a fabric anti-dislocation mechanism is provided at the top of the loading rack.

[0006] The fabric anti-misalignment mechanism comprises two fixed frames fixed on the top of the loading rack and a movable frame movably arranged on the top of the loading rack.

[0007] A leveling roller for leveling the fabric is movably provided between the two fixed frames and the movable frame. A heat-conducting roller is movably sleeved on the outside of the leveling roller. The outer wall of the heat-conducting roller and the contact surface of the fabric form an ironing working surface.

[0008] Preferably, an installation slot is provided in the loading rack, a driving motor is fixed to the outside of the installation slot, the output shaft of the driving motor is connected to a threaded rod through a coupling, the threaded rod is externally threaded with a movable block, and the top of the movable block is fixedly connected to the bottom end of a movable frame.

[0009] Preferably, a baffle is provided in the installation groove, a limiting groove adapted to the outer contour of the baffle is opened in the middle of the movable block, the baffle passes through the limiting groove and the two form an axial sliding fit.

[0010] Preferably, a guide rod parallel to the axis of the threaded rod is fixed to the top surface of the loading rack, and another movable frame is slidably connected to the guide rod.

[0011] Preferably, the two fixed frames and the movable frame are fixed with connecting columns, a slider is slidably provided outside the connecting columns, and the leveling roller is rotatably arranged between the two sliders. The side walls of the two fixed frames and the movable frame are provided with strip grooves for the leveling roller to move up and down.

[0012] Preferably, a first spring is provided on the outer sleeve of the connecting column, the top end of the first spring is fixedly connected to the top end of the connecting column, the bottom end of the first spring is fixedly connected to the top end of the slider, and a compression stroke space is left between the bottom surface of the slider and the bottom end of the connecting column.

[0013] Preferably, a heater is fixed on the top of one of the fixed frame and the movable frame, an electric air pump is provided on the top of the heater, the air outlet of the heater is connected to a connecting pipe through a rotary joint, and the other end of the connecting pipe passes through the axis of the leveling roller and forms a sealed connection with the inner cavity of the leveling roller.

[0014] Preferably, the outer wall of the leveling roller is provided with air outlet holes at equal intervals along the axial direction, and an annular groove is also provided on the outer side of the leveling roller, and the heat-conducting roller is fixedly connected to the annular groove.

[0015] Compared with the prior art, the present invention provides a cloth-pulling device for preventing knitted fabric from being misplaced during spreading, which has the following beneficial effects:

[0016] 1. This cloth-pulling device, which prevents the misalignment of knitted fabrics, uses a threaded rod to drive the movable frame to move horizontally, combined with the sliding adjustment of the guide rod to form a dynamically adjustable support structure. This design enables the two movable frames and the fixed frame to adjust the spacing in real time according to the width of the fabric, effectively preventing lateral deviation during fabric transportation. At the same time, the connecting column and the slider, through the elastic action of the first spring, enable the smoothing roller to adapt to fabrics of different thicknesses, maintaining contact between the ironing work surface and the fabric. This dynamic adaptation mechanism not only ensures the precise positioning of fabric transportation, but also provides the basic conditions for subsequent wrinkle removal by maintaining ironing pressure. The synergistic effect of the two reduces the risk of fabric misalignment;

[0017] 2. This fabric-pulling device, designed to prevent misalignment of knitted fabrics, utilizes a dynamic adjustment mechanism to ensure stable fabric transport. A heater and electric air pump direct hot air through a connecting pipe into the inner cavity of the smoothing roller. Heat is evenly released through axially equidistant air outlets. Simultaneously, the annular grooves of the heat-conducting roller and the smoothing roller work together to efficiently transfer heat to the ironing surface. The combined effects of the rolling pressure of the heat-conducting roller and the hot air rapidly reshape the fabric's fiber structure, smoothing out misaligned wrinkles through continuous heat pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a cloth pulling device for preventing knitted fabric from being misplaced. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of a cloth pulling device for preventing knitted fabric from being misplaced. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of a partial three-dimensional structure of a cloth-pulling device for preventing misplacement of knitted fabrics in the present invention;

[0021] Figure 4 This is a schematic diagram of the partially disassembled structure of a cloth-pulling device for preventing misplacement of knitted fabrics in the utility model. Figure 1 ;

[0022] Figure 5 This is a schematic diagram of the partially disassembled structure of a cloth-pulling device for preventing misplacement of knitted fabrics in the utility model. Figure 2 ;

[0023] Figure 6 This is a schematic diagram of the partially disassembled structure of a cloth-pulling device for preventing misplacement of knitted fabrics in the utility model. Figure 3 .

[0024] In the figure: 1. Support; 2. Cloth stretching machine body; 3. Loading rack; 4. Fabric anti-misalignment mechanism; 41. Fixed frame; 42. Movable frame; 43. Smoothing roller; 431. Air outlet; 44. Heat-conducting roller; 441. Annular groove; 451. Mounting groove; 452. Driving motor; 453. Threaded rod; 454. Movable block; 455. Baffle; 456. Guide rod; 461. Connecting column; 462. Slider; 463. First spring; 471. Heater; 472. Electric air pump; 473. Connecting pipe. DETAILED DESCRIPTION

[0025] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Example: See Figures 1-6 The utility model provides a technical solution: a cloth pulling device for preventing knitted fabric from being misplaced, comprising a support 1, a cloth pulling machine body 2 being provided at the top of the support 1, a loading rack 3 being provided at the top of the support 1, and the loading rack 3 being located beside the cloth pulling machine body 2, and a fabric anti-misplacement mechanism 4 being provided at the top of the loading rack 3.

[0027] The fabric anti-misalignment mechanism 4 comprises two fixed frames 41 fixed to the top of the loading rack 3 and a movable frame 42 movably mounted on the top of the loading rack 3. The combination of the fixed frames 41 and the movable frame 42 forms an adjustable frame structure that not only ensures basic support stability but also provides a structural foundation for subsequent dynamic adjustment to accommodate the conveying needs of fabrics of different specifications.

[0028] Between the two fixed frames 41 and the movable frame 42, smoothing rollers 43 are movably installed to smooth the fabric. Heat-conducting rollers 44 are sleeved onto the outside of these rollers, with the outer wall of these rollers 44 contacting the fabric to form an ironing surface. These rollers, through the dual functions of mechanical smoothing and heat conduction, simultaneously flatten and initially iron the fabric during transport, effectively eliminating internal stress.

[0029] Furthermore, a mounting slot 451 is formed in the loading rack 3. A drive motor 452 is fixed to the outside of the mounting slot 451. The output shaft of the drive motor 452 is connected to a threaded rod 453 via a coupling. The threaded rod 453 is externally threaded with a movable block 454. The top of the movable block 454 is fixedly connected to the bottom of a movable frame 42. This enables displacement control of the movable frame 42 to meet the tension adaptation requirements of different fabrics, from gauze to thick terry.

[0030] Furthermore, a baffle 455 is positioned within mounting slot 451. A retaining groove mates with the outer contour of baffle 455, extending through the retaining groove and forming an axially sliding fit between the baffle 455 and the movable block 454. Baffle 455 prevents rotational deviation of movable block 454, ensuring that threaded drive is converted solely into linear motion, thereby improving the repeatability of the adjustment.

[0031] Furthermore, a guide rod 456 parallel to the axis of the threaded rod 453 is fixed to the top surface of the loading rack 3, and another movable frame 42 is slidably connected to the guide rod 456. This disperses the load, avoids tilting caused by unilateral adjustment, ensures the parallelism of the synchronous displacement of the movable frames 42 on both sides, and maintains the flatness of the fabric unfolding surface.

[0032] Furthermore, connecting posts 461 are fixed to both the fixed frames 41 and the movable frame 42. Sliders 462 slide outside the connecting posts 461, and the leveling roller 43 is rotatably positioned between the two sliders 462. The sidewalls of both the fixed frames 41 and the movable frame 42 are provided with strip grooves for the leveling roller 43 to move up and down. The connecting posts 461 and sliders 462 provide the leveling roller 43 with vertical freedom, automatically compensating for variations in fabric thickness, preventing damage to the fabric caused by hard squeezing, and extending the service life of the equipment.

[0033] Furthermore, a first spring 463 is mounted on the outer sleeve of the connecting post 461. The top of the first spring 463 is fixedly connected to the top of the connecting post 461, and the bottom of the first spring 463 is fixedly connected to the top of the slider 462. A compression stroke space is left between the bottom surface of the slider 462 and the bottom of the connecting post 461. This ensures the required ironing pressure while preventing overpressure from causing new wrinkles on thin fabrics, thus achieving adaptive pressure adjustment.

[0034] Furthermore, a heater 471 is fixed to the top of each of the fixed frame 41 and the movable frame 42. An electric air pump 472 is installed at the top of the heater 471. The air outlet of the heater 471 is connected to a connecting pipe 473 via a rotary joint. The other end of the connecting pipe 473 passes through the axis of the smoothing roller 43 and forms a sealed connection with the inner cavity of the smoothing roller 43. This achieves efficient heat transfer. The electric air pump 472 controls the hot air flow, and in conjunction with the temperature regulation of the heater 471, the temperature of the ironing work surface is kept stable.

[0035] Furthermore, the outer wall of the leveling roller 43 is provided with air outlet holes 431 at equal intervals along the axial direction. An annular groove 441 is also formed on the outer surface of the leveling roller 43, and the heat transfer roller 44 is fixedly connected to the annular groove 441. The annular groove 441 structure stabilizes the position of the heat transfer roller 44. The air outlet holes 431 evenly distribute air, allowing the hot air to diffuse in a spiral pattern, improving the uniformity of heat distribution on the fabric and preventing fiber damage caused by localized overheating.

[0036] In actual operation, the cloth-pulling device achieves the functions of preventing misalignment and ironing and removing wrinkles in knitted fabrics through the following process: As the fabric is conveyed through the loading rack 3, it first enters the fabric misalignment prevention mechanism 4. After the drive motor 452 is activated, its output shaft rotates the threaded rod 453 via a coupling. The movable block 454, externally threaded to the threaded rod 453, moves within the mounting slot 451 along the axial direction defined by the baffle 455, synchronously driving the movable frame 42 fixed thereto to translate, causing the other movable frame 42 to slide outside the guide rod 456. The two movable frames 42 and the fixed frame 41 form a dynamically adjustable support structure, enabling adaptive adjustment of the fabric's unfolded width through the precise transmission of the threaded rod 453.

[0037] When the thickness of the fabric changes, the slider 462 on the connecting column 461 produces adaptive displacement under the action of the first spring 463: when thinner fabric enters, the first spring 463 pushes the slider 462 downward, driving the smoothing roller 43 to press the fabric; when thicker fabric passes, the slider 462 compresses the first spring 463 and moves upward, using the compression stroke space reserved at the bottom of the connecting column 461 to maintain contact pressure, ensuring that the ironing working surface composed of the smoothing roller 43 and the heat-conducting roller 44 always fits the fabric surface.

[0038] During the ironing phase, heater 471 heats the air, which is then pressurized and delivered to connecting pipe 473 by electric air pump 472. The hot air then enters the inner cavity of smoothing roller 43 through a sealed rotary joint. As smoothing roller 43 rotates, hot air is continuously discharged through axially evenly spaced air outlet holes 431. Simultaneously, heat transfer roller 44 cooperates with smoothing roller 43 through annular groove 441, evenly transferring heat energy to the ironing surface. The combined effects of the rolling pressure of heat transfer roller 44 and the hot air reshape the fabric's fiber structure, smoothing out misaligned wrinkles through the continuous heat pressing process. The finished, flat fabric is then delivered to the main body of the fabric spreading machine 2 for subsequent spreading operations.

[0039] The above embodiments merely represent one or several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A cloth spreading device for preventing knitted fabric from being misplaced during spreading, comprising a support (1), a cloth spreading machine body (2) being provided at the top of the support (1), and characterized in that: A loading rack (3) is provided at the top of the support (1), and the loading rack (3) is located beside the cloth stretching machine body (2), and a fabric anti-misalignment mechanism (4) is provided at the top of the loading rack (3); the fabric anti-misalignment mechanism (4) includes two fixed frames (41) fixed at the top of the loading rack (3) and a movable frame (42) movably provided at the top of the loading rack (3); a smoothing roller (43) for smoothing the fabric is movably provided between the two fixed frames (41) and the movable frame (42), and a heat-conducting roller (44) is sleeved on the outside of the smoothing roller (43), and the outer wall of the heat-conducting roller (44) forms an ironing working surface with the contact surface of the fabric.

2. A cloth-pulling device for preventing dislocation of knitted fabrics according to claim 1, characterized in that: The loading rack (3) is provided with a mounting groove (451), a driving motor (452) is fixed to the outside of the mounting groove (451), an output shaft of the driving motor (452) is connected to a threaded rod (453) through a coupling, the threaded rod (453) is externally threadedly connected to a movable block (454), and the top end of the movable block (454) is fixedly connected to the bottom end of a movable frame (42).

3. The cloth-pulling device for preventing misplacement of knitted fabrics according to claim 2, characterized in that: A baffle (455) is provided in the installation groove (451), a limiting groove adapted to the outer contour of the baffle (455) is provided in the middle of the movable block (454), the baffle (455) passes through the limiting groove, and the two form an axial sliding fit.

4. The cloth-pulling device for preventing dislocation of knitted fabrics according to claim 2, characterized in that: A guide rod (456) parallel to the axis of the threaded rod (453) is fixed to the top surface of the loading rack (3), and another movable frame (42) is slidably connected to the guide rod (456).

5. The cloth-pulling device for preventing dislocation of knitted fabrics according to claim 1, characterized in that: A connecting column (461) is fixed in each of the two fixed frames (41) and the movable frame (42), a slider (462) is slidably provided outside the connecting column (461), and the leveling roller (43) is rotatably arranged between the two sliders (462); and a strip groove for the leveling roller (43) to move up and down is provided on the side walls of the two fixed frames (41) and the movable frame (42).

6. The cloth-pulling device for preventing misplacement of knitted fabrics according to claim 5, characterized in that: The connecting column (461) is provided with a first spring (463) on its outer sleeve, the top end of the first spring (463) is fixedly connected to the top end of the connecting column (461), the bottom end of the first spring (463) is fixedly connected to the top end of the slider (462), and a compression stroke space is left between the bottom surface of the slider (462) and the bottom end of the connecting column (461).

7. The cloth-pulling device for preventing misplacement of knitted fabrics according to claim 1, characterized in that: A heater (471) is fixed to the top of one of the fixed frames (41) and the movable frame (42), and an electric air pump (472) is provided at the top of the heater (471). The air outlet of the heater (471) is connected to a connecting pipe (473) via a rotary joint, and the other end of the connecting pipe (473) passes through the axis of the smoothing roller (43) and forms a sealed connection with the inner cavity of the smoothing roller (43).

8. The cloth-pulling device for preventing misplacement of knitted fabrics according to claim 7, characterized in that: The outer wall of the leveling roller (43) is provided with air outlet holes (431) at equal intervals along the axial direction. An annular groove (441) is also provided on the outside of the leveling roller (43). The heat-conducting roller (44) is fixedly connected to the annular groove (441).

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