Hot air bottoming machine with anti-wrinkle function

Abstract

The application discloses a hot air bottoming machine with a wrinkle prevention function, which comprises a drying frame, a drying cavity for discharging hot air is fixedly arranged at the top of the drying frame, and a negative pressure cavity for supporting a textile fabric is arranged at the middle of the drying frame; a heating assembly is arranged at the top of the negative pressure cavity and is used for extruding and heating the textile fabric; the heating assembly comprises a plurality of adjusting pressure rollers and pre-pressure rollers which are rotationally connected to the surface of the textile fabric, and an electric heating rod for heating air is arranged in each of the adjusting pressure rollers and the pre-pressure rollers. Hot air is discharged through the air outlet holes at the bottom of the drying cavity, and the hot air discharged from the drying cavity is sucked into the inside of the negative pressure cavity. In this process, the hot air can penetrate through the textile fabric, so that the hot air can uniformly dry both sides of the textile fabric, and the generation of wrinkles caused by uneven drying of the textile fabric is avoided.

Description

Technical Field

[0001] This invention relates to the field of textile technology, specifically to a hot air base coat machine with anti-wrinkle function. Background Technology

[0002] The hot air base coater is a combined dyeing and finishing machine used in the textile processing of fabrics. The process flow of this combined machine includes flat fabric feeding, uniform rolling, two sets of far-infrared dryers, two-chamber hot air dryers, single-column drying cylinder dryers, three cold water rollers for cooling, and flat fabric unloading. In this process, the hot air dryer is the main drying component.

[0003] For example, the hot air finishing machine for dyeing and printing, disclosed in CN115900314B, includes an air outlet adjustment mechanism, a hot air box inside a hot air dryer, an electric heating mesh inside the hot air box, air outlet adjustment components on both sides of the hot air box, a turbine fan outside the hot air dryer, and an air duct installed between the turbine fan and the hot air box. An air inlet adjustment component is installed inside the air duct. In this hot air finishing machine, rotating the adjustment disc causes the bidirectional screw to rotate, at which point the two sets of sliding racks move to opposite sides. The sliding racks mesh with the gear rings, causing the two sets of rotating clamps to flip and open outwards, thus adjusting the opening size of the hot air box and preventing incomplete drying at the edges of the fabric due to excessive width.

[0004] However, in actual use, the above technology uses hot air to dry textile fabrics. Due to the obstruction of the fabric, the hot air has poor penetration effect, which will cause uneven drying on both sides of the textile fabric, resulting in wrinkles. Summary of the Invention

[0005] The purpose of this invention is to provide a hot air base coater with anti-wrinkle function to solve the problem of uneven drying on both sides of textile fabrics, which in turn causes wrinkles in the textile fabrics.

[0006] To achieve the above objectives, the present invention provides the following technical solution, including:

[0007] A drying rack, wherein a drying chamber for discharging hot air is fixedly provided at the top of the drying rack, and a negative pressure chamber for supporting textile fabric is provided in the middle of the drying rack;

[0008] A heating component is installed at the top of the negative pressure chamber, and the heating component is used to squeeze and heat the textile fabric. The heating component includes multiple adjusting pressure rollers and pre-pressure rollers that are rotatably connected to the surface of the textile fabric. Each adjusting pressure roller and pre-pressure roller is provided with an electric heating rod for heating air, so that the adjusting pressure rollers and pre-pressure rollers can be attached to the textile fabric to squeeze and heat the textile fabric.

[0009] A vibration anti-wrinkle component is installed in a negative pressure chamber. The vibration anti-wrinkle component is used to uniformly stretch the textile fabric by double-sided extrusion to prevent wrinkles from forming on the textile fabric.

[0010] The second adjustment component is installed inside the negative pressure chamber. The second adjustment component is used to generate negative pressure and draw the heat discharged from the drying chamber into the interior of the negative pressure chamber, so that the hot air discharged from the drying chamber will penetrate the textile fabric evenly.

[0011] Preferably, there are two drying racks, which are fixedly connected to the front and rear ends of the drying chamber, respectively. The textile fabric is located between the drying chamber and the negative pressure chamber. The drying chamber has a hollow structure in the middle, and multiple air vents for discharging hot air are opened at the bottom of the drying chamber corresponding to the position of the negative pressure chamber. There are two pre-pressure rollers, which are located at both ends of multiple adjusting rollers. Each drying rack has a movable groove in the middle of the position corresponding to the adjusting roller and the pre-pressure roller, and the adjusting roller and the pre-pressure roller are movably connected to the inner wall of the movable groove so that the movement of the adjusting roller and the pre-pressure roller can be guided through the movable groove. Both the adjusting roller and the pre-pressure roller are hollow structures. Each end of the adjusting roller is rotatably connected to a first hinge ring, and the end of the first hinge ring away from the position of the adjusting roller is hinged to a first hinge arm. The end of the first hinge arm away from the position of the first hinge ring is hinged to a hinge seat, and a connecting frame is fixedly connected to the inner wall of the hinge seat. The two ends of the pre-pressure roller are... Each end of the connecting frame is rotatably connected to a second hinge ring, and a second hinge arm is hinged to the end of the second hinge ring away from the position of the pre-pressure roller. A drive frame is fixedly connected to the end of the second hinge arm away from the position of the first hinge ring, and a first guide rod is movably inserted into the middle of the drive frame. The first guide rod is fixedly connected to one end of the connecting frame. A return spring is fixedly connected to the end of the connecting frame and the drive frame corresponding to the position of the first guide rod, so that under the elastic action of the return spring, the pre-pressure roller is driven to tightly adhere to the surface of the textile fabric through the drive frame, the second hinge arm and the second hinge ring. A connecting pipe is fixedly connected to one end of the adjusting pressure roller and the pre-pressure roller, and the connecting pipe is fixedly connected to the interior of the adjusting pressure roller and the pre-pressure roller. The connecting pipe passes through the drying frame and extends into the interior of the drying chamber, so that the drying chamber is connected to the interior of the adjusting pressure roller and the pre-pressure roller through the connecting pipe. An air inlet pipe for air supply is fixedly connected to the other end of the adjusting pressure roller and the pre-pressure roller, and the interior of the air inlet pipe is connected to the interior of the adjusting pressure roller and the pre-pressure roller.

[0012] Preferably, both connecting frames are threaded with lead screws at their middle sections, and the lead screws are movably passed through and extended to both ends of the drying rack via sealed bearings. The thread directions at both ends of the lead screws are opposite. A limiting frame is fixedly connected to the middle section of the connecting frame, and a second guide rod is movably inserted into the middle section of the limiting frame. The second guide rod is fixedly connected to one end of the drying rack so that the limiting frame, in conjunction with the second guide rod, can guide the movement of the connecting frame. The lead screws are driven by a drive motor.

[0013] Preferably, a groove is provided in the middle of the top of the negative pressure chamber, and the vibration anti-wrinkle component is located in the groove at the top of the negative pressure chamber. The vibration anti-wrinkle component includes two vertically arranged first drive shafts, which are movably passed through and extended to both ends of the drying rack via sealed bearings. One end of each of the two first drive shafts is fixedly connected to a first gear, and the surfaces of the two first gears mesh. An arc frame is fixedly connected to the surface of the first drive shaft via a connecting rod, and multiple arc frames on the two first drive shafts are staggered. The arc frame is an arc structure, and the surface of the arc frame is provided with guide patterns for combing the textile fabric, so that when the arc frame squeezes the textile fabric, the textile fabric will form an arc structure, and under the action of conveying the textile fabric, it will contact the guide patterns and smooth the textile fabric. One of the first drive shafts is driven by a drive motor.

[0014] Preferably, it further includes an adjustment component one disposed at the top of the negative pressure chamber for adjusting the airflow, so as to adjust the airflow passing through the textile fabric. The adjustment component one includes two movable plates disposed at the top of both ends of the inner wall of the negative pressure chamber. The inner wall of the negative pressure chamber corresponding to the position of the movable plates is provided with a groove, and the movable plates are movably connected to the inner wall of the groove. The side wall of the negative pressure chamber corresponding to the position of the groove and the middle of the movable plates are respectively provided with multiple through slots, so that when the through slot on the negative pressure chamber coincides with the through slot on the movable plate, the negative pressure chamber is connected to the outside. Conversely, when the through slot on the negative pressure chamber and the through slot on the movable plate are completely intersected, the negative pressure chamber is connected to the outside. The movable plate is closed, and a second gear is engaged at both the front and rear ends of its bottom. When the second gear rotates, it drives the movable plate to move along the inner wall of the slide groove. A second drive shaft is fixedly connected to the middle of the second gear, and the movable plate extends through and to both ends of the drying rack via a sealed bearing. A first adjustment knob is fixedly connected to one end of the second drive shaft. Guide frames are fixedly connected to both the front and rear ends of the movable plate, and a guide groove is opened at one end of the drying rack corresponding to the position of the guide frame. The guide frame is movably connected in the guide groove so that the guide frame, in conjunction with the guide groove, can limit the movement of the movable plate.

[0015] Preferably, the second adjustment component includes an adjustment cavity fixedly connected between the two drying racks, and the adjustment cavity is fixedly connected to the middle of the inner wall of the negative pressure cavity, dividing the negative pressure cavity into two spaces. The middle of the adjustment cavity has an oblong structure, and both ends of the inner wall of the adjustment cavity are rotatably connected to adjustment tubes. The adjustment tubes are rotatably connected to one end of the opposite face of the two drying racks through sealed bearings. One end of the adjustment tube is fixedly connected to a second adjustment knob. Adjustment grooves are respectively opened at both ends of the side wall of the adjustment tube and the side wall of the adjustment cavity, so that the wind pressure at both ends of the negative pressure cavity can be changed when the overlapping part of the adjustment groove on the adjustment cavity and the adjustment groove on the adjustment tube changes.

[0016] Preferably, it also includes a dehumidification component disposed inside the negative pressure chamber. The dehumidification component is used to dehumidify the air drawn into the negative pressure chamber to prevent humid air from affecting the drying efficiency of textile fabrics. The dehumidification component includes a negative pressure pipe rotatably connected to the middle of the drying rack via a sealed bearing, and the negative pressure pipe is located inside the adjustment chamber. A water-absorbing sponge is fixedly connected to the surface of the negative pressure pipe. A drive roller is rotatably connected to the inner wall of the negative pressure pipe, and the negative pressure pipe and the drive roller are eccentrically arranged. A drive tooth is fixedly connected to the surface of the drive roller, and multiple ventilation holes are opened on the side wall of the negative pressure pipe corresponding to the position of the drive tooth. The size of the drive tooth and the ventilation hole are adapted so that when the drive roller rotates, it can drive the negative pressure pipe to rotate by meshing the drive tooth with the corresponding ventilation hole. A squeezing roller is tightly attached to the bottom of the water-absorbing sponge, and the squeezing roller is rotatably connected to one end of the opposite face of the two drying racks via a bearing.

[0017] Preferably, a water outlet pipe connected to the inside of the regulating chamber is fixedly embedded at the bottom of the negative pressure chamber. The water outlet pipe is equipped with a one-way valve to allow water inside the regulating chamber to be discharged. The middle part of the water outlet pipe is an annular hollow structure, and a lead screw moves through and extends to both ends of the water outlet pipe. The bottom of the negative pressure chamber is recessed towards the water outlet pipe so that water at the bottom of the regulating chamber can flow into the water outlet pipe through the recess. The drying rack is fixedly connected to the two ends of the negative pressure pipe, and the drive roller moves through and extends to both ends of the connecting cover via a sealed bearing. The drive roller is driven by a servo motor. One of the connecting covers has an exhaust pipe fixedly connected to the side wall and connected to the inside of the connecting cover. The exhaust pipe is connected to the air inlet of the circulation pump, and the air inlet pipe is connected to the air outlet of the circulation pump, so that a circulating air duct is formed between the drying chamber, the negative pressure chamber, the regulating component, and the dehumidification component.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This invention discharges hot air through the air outlet at the bottom of the drying chamber, and at the same time draws the hot air discharged from the drying chamber into the interior of the negative pressure chamber. During this process, the hot air will penetrate the textile fabric, so that the hot air can evenly dry both sides of the textile fabric, avoiding the occurrence of wrinkles caused by uneven drying of the textile fabric.

[0020] This invention can also adjust the heating components according to the thickness of the textile fabric. Specifically, when it is necessary to adjust the degree of compression of the textile fabric by the adjusting pressure roller and the pre-pressure roller, the drive motor drives the lead screw to rotate, and the lead screw drives the connecting frame to move along the lead screw under the action of the limit frame and the second guide rod. This causes the connecting frame to move the hinge seat. When the hinge seat moves, it causes the adjusting pressure roller to move on the inner wall of the movable groove through the first hinge arm and the first hinge ring, so as to adjust the distance between the adjusting pressure roller and the negative pressure chamber. At the same time, the movement of the hinge seat also drives the pre-pressure roller to move on the inner wall of the movable groove through the return spring, the first guide rod, the second hinge arm, and the second hinge ring, so as to adjust the distance between the pre-pressure roller and the negative pressure chamber, thereby realizing the adjustment of the degree of compression of the textile fabric by the adjusting pressure roller and the pre-pressure roller.

[0021] This invention also divides the negative pressure chamber into a pre-drying area and a normal drying area. The pre-drying area is located at the point where the textile fabric enters the device, while the other end of the negative pressure chamber is the normal drying area. By rotating the second adjustment knob, the adjustment tube rotates, adjusting the overlap between the adjustment groove at one end of the adjustment chamber and the adjustment groove at one end of the adjustment tube. This ensures that the overlap area between the adjustment groove at one end of the adjustment chamber and the adjustment groove at one end of the adjustment tube in the pre-drying area is smaller than that in the normal drying area. Consequently, the suction force generated inside the pre-drying area is less than that generated inside the normal drying area, meaning the efficiency of hot air penetration through the textile fabric in the pre-drying area is less than that in the normal drying area. This allows the textile fabric to be pre-dried before entering the device for drying, preventing wrinkles caused by excessive temperature differences during fabric winding. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the hot air base coat machine with anti-wrinkle function of the present invention. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the overall structure of the hot air base coat machine with anti-wrinkle function of the present invention. Figure 2 ;

[0024] Figure 3 This is a cross-sectional view of the overall structure of the hot air base coat machine with anti-wrinkle function of the present invention;

[0025] Figure 4This is a front sectional view of the overall structure of the hot air base coat machine with anti-wrinkle function of the present invention;

[0026] Figure 5 This is a schematic diagram of the heating component structure of the hot air base coat machine with anti-wrinkle function according to the present invention. Figure 1 ;

[0027] Figure 6 This is a schematic diagram of the negative pressure chamber structure of the hot air base coat machine with anti-wrinkle function of the present invention. Figure 1 ;

[0028] Figure 7 This is a schematic diagram of the negative pressure chamber structure of the hot air base coat machine with anti-wrinkle function of the present invention. Figure 2 ;

[0029] Figure 8 This is a schematic diagram of the heating component structure of the hot air base coat machine with anti-wrinkle function according to the present invention. Figure 2 ;

[0030] Figure 9 This is a schematic diagram of the vibration anti-wrinkle component of the hot air base coat machine with anti-wrinkle function of the present invention;

[0031] Figure 10 This is a schematic diagram of the second adjustment component of the hot air base coat machine with anti-wrinkle function according to the present invention;

[0032] Figure 11 Cross-sectional view of the second structure of the adjustment component of the hot air base coat machine with anti-wrinkle function of the present invention. Figure 1 ;

[0033] Figure 12 Cross-sectional view of the second structure of the adjustment component of the hot air base coat machine with anti-wrinkle function of the present invention. Figure 2 ;

[0034] Figure 13 This is a schematic diagram of the dehumidification component of the hot air base coat machine with anti-wrinkle function of the present invention.

[0035] In the diagram: 1. Drying rack; 2. Textile fabric; 3. Drying chamber; 4. Negative pressure chamber;

[0036] 501. Adjusting pressure roller; 502. Pre-pressure roller; 503. Electric heating rod; 504. Movable groove; 505. First hinge ring; 506. First hinge arm; 507. Hinge seat; 508. Connecting frame; 509. Second hinge ring; 510. Second hinge arm; 511. Drive frame; 512. First guide rod; 513. Return spring; 514. Lead screw; 515. Limiting frame; 516. Second guide rod; 517. Connecting pipe; 518. Air inlet pipe;

[0037] 601. First drive shaft; 602. Arc-shaped frame; 603. First gear;

[0038] 701. Movable plate; 702. Through slot; 703. Second gear; 704. Second drive shaft; 705. First adjusting knob; 706. Guide frame;

[0039] 801. Adjustment chamber; 802. Adjustment tube; 803. Adjustment groove; 804. Second adjustment knob;

[0040] 901. Negative pressure pipe; 902. Absorbent sponge; 903. Drive roller; 904. Drive tooth; 905. Vent hole; 906. Squeeze roller; 907. Connecting cover; 908. Exhaust pipe; 909. Water outlet pipe. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figure 1-13 The specific components of this case will be described in detail below.

[0043] The drying rack 1 has a drying chamber 3 fixedly installed on its top for discharging hot air, and a negative pressure chamber 4 for supporting the textile fabric 2 in its middle. There are two drying racks 1, and the two drying racks 1 are fixedly installed at the front and rear ends of the drying chamber 3 respectively. The textile fabric 2 is located between the drying chamber 3 and the negative pressure chamber 4. The drying chamber 3 has a hollow structure in the middle, and multiple air vents for discharging hot air are opened at the bottom of the drying chamber 3 corresponding to the position of the negative pressure chamber 4.

[0044] A heating assembly is installed at the top of the negative pressure chamber 4. This heating assembly is used to compress and heat the textile fabric 2. The heating assembly includes multiple adjusting rollers 501 and pre-compression rollers 502 rotatably connected to the surface of the textile fabric 2. Each adjusting roller 501 and pre-compression roller 502 is equipped with an electric heating rod 503 for heating air. This allows the adjusting rollers 501 and pre-compression rollers 502 to adhere to the textile fabric 2, enabling compression and heating of the textile fabric 2. There are two pre-compression rollers 502. 02 are located at both ends of multiple adjusting pressure rollers 501. The drying rack 1 has movable grooves 504 at the center of each position corresponding to the adjusting pressure rollers 501 and pre-pressure rollers 502. The adjusting pressure rollers 501 and pre-pressure rollers 502 are movably connected to the inner wall of the movable grooves 504, so that the movable grooves 504 can guide the movement of the adjusting pressure rollers 501 and pre-pressure rollers 502. Both the adjusting pressure rollers 501 and pre-pressure rollers 502 are hollow structures. Each end of the adjusting pressure roller 501 is rotatably connected to a first hinge ring. 505, and the first hinge ring 505 is hinged to a first hinge arm 506 at the end away from the position of the adjusting pressure roller 501. The first hinge arm 506 is hinged to a hinge seat 507 at the end away from the position of the first hinge ring 505. A connecting frame 508 is fixedly installed on the inner wall of the hinge seat 507. Both ends of the pre-pressure roller 502 are rotatably connected to a second hinge ring 509. The second hinge ring 509 is hinged to a second hinge arm 510 at the end away from the position of the pre-pressure roller 502. The second hinge arm 510 is located away from the position of the first hinge ring 501. A drive frame 511 is fixedly installed at one end of position 5, and a first guide rod 512 is movably inserted into the middle of the drive frame 511. The first guide rod 512 is fixedly installed at one end of the connecting frame 508. A return spring 513 is fixedly installed at one end of the connecting frame 508 and the drive frame 511 corresponding to the position of the first guide rod 512, so that under the elastic action of the return spring 513, the pre-pressure roller 502 is driven to tightly adhere to the surface of the textile fabric 2 through the drive frame 511, the second hinge arm 510 and the second hinge ring 509.

[0045] Under the elastic compression of the return spring 513, the pressure exerted by the pre-pressure roller 502 on the textile fabric 2 is greater than that exerted by the adjusting pressure roller 501 on the textile fabric 2. This ensures that the textile fabric 2 is stably compressed on the surface of the negative pressure chamber 4 at both the position where it enters the device and the position where it leaves the device.

[0046] A connecting pipe 517 is fixedly installed at one end of both the adjusting pressure roller 501 and the pre-pressure roller 502. The connecting pipe 517 is connected to the interior of the adjusting pressure roller 501 and the pre-pressure roller 502, and the connecting pipe 517 is fixedly inserted through the drying rack 1 and extends into the interior of the drying chamber 3, so that the drying chamber 3 is connected to the interior of the adjusting pressure roller 501 and the pre-pressure roller 502 through the connecting pipe 517. An air inlet pipe 518 for air supply is fixedly installed at the other end of both the adjusting pressure roller 501 and the pre-pressure roller 502, and the interior of the air inlet pipe 518 is connected to the interior of the adjusting pressure roller 501 and the pre-pressure roller 502. The two connecting frames 508 are connected, and each of them has a screw 514 threadedly connected to its middle. The screw 514 passes through and extends to both ends of the drying rack 1 through a sealed bearing. The threads at both ends of the screw 514 are in opposite directions. A limit frame 515 is fixedly installed in the middle of the connecting frame 508, and a second guide rod 516 is movably inserted into the middle of the limit frame 515. The second guide rod 516 is fixedly installed at one end of the drying rack 1 so that the limit frame 515 and the second guide rod 516 can guide the movement of the connecting frame 508. The screw 514 is driven by a drive motor.

[0047] In use, when it is necessary to adjust the pressure of the adjusting roller 501 and the pre-pressure roller 502 on the textile fabric 2, the drive screw 514 is rotated, causing the connecting frame 508 to move. This, in turn, causes the connecting frame 508 to move the hinge seat 507. When the hinge seat 507 moves, it drives the adjusting roller 501 through the first hinge arm 506 and the first hinge ring 505, thereby adjusting the distance between the adjusting roller 501 and the negative pressure chamber 4. Simultaneously, the movement of the hinge seat 507 is also facilitated by the return spring 513 in conjunction with the first guide rod 512, the second hinge arm 510, and the second hinge ring 509. The pre-pressure roller 502 moves along the inner wall of the movable groove 504, thereby adjusting the distance between the pre-pressure roller 502 and the negative pressure chamber 4. This allows for the adjustment of the pressure roller 501 and the pre-pressure roller 502's compression of the textile fabric 2. The textile fabric 2 drives the adjustment roller 501 and the pre-pressure roller 502 to rotate. Since the adjustment roller 501 and the pre-pressure roller 502 are equipped with electric heating rods 503, they are heated. When the textile fabric 2 drives the adjustment roller 501 and the pre-pressure roller 502, the adjustment roller 501 and the pre-pressure roller 502 can perform ironing treatment on the textile fabric 2, improving the drying efficiency of the textile fabric 2.

[0048] A vibration anti-wrinkle component is installed in the negative pressure chamber 4. This component is used to evenly stretch the textile fabric 2 using double-sided extrusion to prevent wrinkles. A groove is formed in the center of the top of the negative pressure chamber 4, and the vibration anti-wrinkle component is located in this groove. The vibration anti-wrinkle component includes two vertically arranged first drive shafts 601, which extend through and to both ends of the drying rack 1 via sealed bearings. A first gear 603 is fixedly mounted at one end of each of the two first drive shafts 601. The surfaces of 603 mesh with each other. An arc-shaped frame 602 is fixedly mounted on the surface of the first drive shaft 601 by a connecting rod. Multiple arc-shaped frames 602 on the two first drive shafts 601 are staggered. The arc-shaped frame 602 has an arc-shaped structure, and the surface of the arc-shaped frame 602 is provided with guide patterns for combing the textile fabric 2. When the arc-shaped frame 602 squeezes the textile fabric 2, the textile fabric 2 will form an arc-shaped structure. Under the action of conveying the textile fabric 2, it will contact the guide patterns and smooth the textile fabric 2. One of the first drive shafts 601 is driven by a second drive motor.

[0049] In use, the above structure drives one of the first drive shafts 601 to rotate, causing the arc-shaped frames 602 on the two first drive shafts 601 to rotate alternately. This provides auxiliary stretching and recovery of the textile fabric 2 on both sides, preventing certain amorphous areas of the textile fabric 2 from being unable to recover or only partially recovering due to external forces. At the same time, the rotation of the arc-shaped frames 602 driven by the two first drive shafts 601 also shakes the textile fabric 2, further ensuring that the textile fabric 2 is stretched and recovered evenly. Meanwhile, the guide patterns on the arc-shaped frames 602 can comb the textile fabric 2, causing it to form an elliptical arc structure. Under the action of the guide patterns, the middle of the textile fabric 2 will converge towards both ends, and the textile fabric 2 will be stretched evenly longitudinally, preventing the textile fabric 2 from folding and wrinkling.

[0050] An adjustment component two is installed inside the negative pressure chamber 4. This component generates negative pressure and draws the heat discharged from the drying chamber 3 into the negative pressure chamber 4, ensuring that the hot air from the drying chamber 3 evenly penetrates the textile fabric 2. The adjustment component two includes an adjustment chamber 801 fixedly installed between the two drying racks 1. The adjustment chamber 801 is fixedly installed in the middle of the inner wall of the negative pressure chamber 4, dividing it into two spaces. The middle part of the adjustment chamber 801 has a waist-shaped structure, and both ends of the inner wall of the adjustment chamber 801 are rotatably connected to adjustment pipes 802. The adjustment pipes 802 are rotatably connected to one end of the opposite face of the two drying racks 1 via sealed bearings. A second adjustment knob 804 is fixedly installed at one end of the adjustment pipe 802. Adjustment grooves 803 are respectively provided at both ends of the side wall of the adjustment pipe 802 and at both ends of the side wall of the adjustment chamber 801. This allows the negative pressure chamber 4 to be adjusted by changing the overlapping portion of the adjustment groove 803 on the adjustment chamber 801 and the adjustment groove 803 on the adjustment pipe 802. The air pressure at both ends of the negative pressure chamber 4 should be divided into a pre-drying area and a normal drying area. That is, the position of the textile fabric 2 entering the device corresponding to the negative pressure chamber 4 is the pre-drying area, and the other end of the negative pressure chamber 4 is the normal drying area. By adjusting the overlap between the adjustment groove 803 at one end of the adjustment chamber 801 and the adjustment groove 803 at one end of the adjustment pipe 802, the overlap area between the adjustment groove 803 at one end of the adjustment chamber 801 and the adjustment groove 803 at one end of the adjustment pipe 802 in the pre-drying area is smaller than the overlap area between the adjustment groove 803 at one end of the adjustment chamber 801 and the adjustment groove 803 at one end of the adjustment pipe 802 in the normal drying area. In other words, the suction force generated inside the pre-drying area is less than the suction force generated inside the normal drying area. This means that the efficiency of hot air penetration of the textile fabric 2 in the pre-drying area is less than the efficiency of hot air penetration in the normal drying area. As a result, the textile fabric 2 can be pre-dried when it enters the device for drying, avoiding the occurrence of wrinkles caused by excessive temperature difference when the textile fabric 2 is rolled up.

[0051] It also includes an adjustment component 1, located at the top of the negative pressure chamber 4, for adjusting the airflow through the textile fabric 2. The adjustment component 1 includes two movable plates 701 located at the top of both ends of the inner wall of the negative pressure chamber 4. The inner wall of the negative pressure chamber 4 corresponding to the position of the movable plates 701 has a groove, and the movable plates 701 are movably connected to the inner wall of the groove. The side wall of the negative pressure chamber 4 corresponding to the position of the groove and the middle of the movable plates 701 are respectively provided with multiple through slots 702, so that when the through slots 702 on the negative pressure chamber 4 coincide with the through slots 702 on the movable plates 701, the negative pressure chamber 4 is connected to the outside. Conversely, when the through slots 702 on the negative pressure chamber 4 and the through slots 702 on the movable plates 701 are completely intersected, the negative pressure chamber 4 is closed to the outside. The movable plate 701 has a second gear 703 meshing at both the front and rear ends of its bottom, so that when the second gear 703 rotates, it drives the movable plate 701 to move along the inner wall of the slide groove. A second drive shaft 704 is fixedly installed in the middle of the second gear 703, and the movable plate 701 extends through and to both ends of the drying rack 1 via a sealed bearing. A first adjustment knob 705 is fixedly installed at one end of the second drive shaft 704. Guide frames 706 are fixedly installed at both the front and rear ends of the movable plate 701, and a guide groove is opened at one end of the drying rack 1 corresponding to the position of the guide frame 706. The guide frame 706 is movably connected in the guide groove so that the guide frame 706 can limit the movement of the movable plate 701 in conjunction with the guide groove.

[0052] In use, the above structure allows the first adjustment knob 705 to be rotated, which in turn drives the second gear 703 to rotate via the second drive shaft 704. This causes the second gear 703 to move the movable plate 701 along the inner wall of the slide groove, thereby changing the overlap between the upper through groove 702 of the negative pressure chamber 4 and the upper through groove 702 of the movable plate 701. When the power of the circulating pump remains constant, a reduction in the overlap between the upper through groove 702 of the negative pressure chamber 4 and the upper through groove 702 of the movable plate 701 increases the flow rate of the hot air drawn into the negative pressure chamber 4 and improves the efficiency of the hot air drying of the middle part of the textile fabric 2. This allows for adjustments to the drying efficiency of the textile fabric 2 as needed.

[0053] It also includes a dehumidification component disposed inside the negative pressure chamber 4. The dehumidification component is used to dehumidify the air drawn into the negative pressure chamber 4 to prevent humid air from affecting the drying efficiency of the textile fabric 2. The dehumidification component includes a negative pressure pipe 901 rotatably connected to the middle of the drying rack 1 via a sealed bearing. The negative pressure pipe 901 is located inside the adjustment chamber 801. A water-absorbing sponge 902 is fixedly installed on the surface of the negative pressure pipe 901. A drive roller 903 is rotatably connected to the inner wall of the negative pressure pipe 901. The negative pressure pipe 901 and the drive roller 903 are offset. In this configuration, drive teeth 904 are fixedly mounted on the surface of the drive roller 903, and multiple ventilation holes 905 are opened on the side wall of the negative pressure pipe 901 corresponding to the position of the drive teeth 904. The drive teeth 904 and the ventilation holes 905 are matched in size so that when the drive roller 903 rotates, the drive teeth 904 can mesh with the corresponding ventilation holes 905 to drive the negative pressure pipe 901 to rotate. The bottom of the absorbent sponge 902 is tightly attached to the squeeze roller 906, and the squeeze roller 906 is rotatably connected to the opposite sides of the two drying racks 1 via bearings. At one end, a water outlet pipe 909, which communicates with the inside of the regulating chamber 801, is fixedly embedded in the bottom of the negative pressure chamber 4. A one-way valve is installed inside the water outlet pipe 909 to allow water to drain from the regulating chamber 801. The middle part of the water outlet pipe 909 has an annular hollow structure, and a lead screw 514 movably passes through and extends to both ends of the water outlet pipe 909. The bottom of the negative pressure chamber 4 is recessed towards the water outlet pipe 909 so that water at the bottom of the regulating chamber 801 can flow through the recess into the water outlet pipe 909. The drying rack 1 corresponds to the negative pressure pipe. Connecting covers 907 are fixedly installed at both ends of 901, and drive rollers 903 extend through and to both ends of connecting covers 907 via sealed bearings. Drive rollers 903 are driven by servo motors. One of the connecting covers 907 has an exhaust pipe 908 fixedly installed on its side wall, which communicates with the inside of the connecting cover 907. The exhaust pipe 908 is connected to the air inlet of the circulation pump, and the air inlet pipe 518 is connected to the air outlet of the circulation pump, so that a circulating air duct is formed between the drying chamber 3, the negative pressure chamber 4, the regulating component 2, and the dehumidification component.

[0054] In operation, the circulating pump creates a negative pressure inside one of the connecting covers 907 via the exhaust pipe 908. Simultaneously, the circulating pump supplies air into the air inlet pipe 518. This air enters the air inlet pipe 518 through one end of the adjusting pressure roller 501 and the pre-pressure roller 502, where it is heated by the electric heating rod 503 and becomes hot air. This hot air is then injected into the drying chamber 3 through the connecting pipe 517 from the other end of the adjusting pressure roller 501 and the pre-pressure roller 502, and finally discharged through the air outlet at the bottom of the drying chamber 3. Since the connecting cover 907 is connected to the inside of the negative pressure chamber 4 via the negative pressure pipe 901, the vent 905, and the adjusting groove 803, when a negative pressure is generated inside the connecting cover 907… This will create negative pressure inside the negative pressure chamber 4. When negative pressure is generated inside the negative pressure chamber 4, the hot air discharged from the drying chamber 3 will be drawn into the negative pressure chamber 4 through the through groove 702. During this process, the hot air will penetrate the textile fabric 2, so that both sides of the textile fabric 2 can be dried evenly, avoiding the occurrence of wrinkles caused by uneven drying of the textile fabric 2. The drive roller 903 is driven to rotate by the servo motor, and the drive roller 903 drives the drive tooth 904 to rotate, so that the drive tooth 904 drives the negative pressure tube 901 to rotate through the air hole 905. The negative pressure tube 901 drives the water-absorbing sponge 902 to squeeze and rotate with the squeeze roller 906, so that the squeeze roller 906 will squeeze out the water inside the water-absorbing sponge 902.

[0055] Working principle: In use, the invention first passes the textile fabric 2 between the heating component and the negative pressure chamber 4. Due to the elastic compression of the pre-pressure roller 502 by the return spring 513, the squeezing force of the pre-pressure roller 502 on the textile fabric 2 is greater than the squeezing force of the adjusting pressure roller 501 on the textile fabric 2. This makes the textile fabric 2 stably squeezed on the surface of the negative pressure chamber 4 at both the position where it enters the device and the position where it leaves the device.

[0056] This device can also adjust the heating components according to the thickness of the textile fabric 2. That is, when it is necessary to adjust the degree of compression of the textile fabric 2 by the pressure roller 501 and the pre-pressure roller 502, the drive motor drives the lead screw 514 to rotate, and the lead screw 514 drives the connecting frame 508 to move along the lead screw 514 under the action of the limit frame 515 and the second guide rod 516. In turn, the connecting frame 508 drives the hinge seat 507 to move. When the hinge seat 507 moves, it will pass through the first hinge arm 506. The first hinge ring 505 drives the adjusting pressure roller 501 to move within the inner wall of the movable groove 504 to adjust the distance between the adjusting pressure roller 501 and the negative pressure chamber 4. At the same time, the movement of the hinge seat 507 also drives the pre-pressure roller 502 to move within the inner wall of the movable groove 504 through the return spring 513 in conjunction with the first guide rod 512, the second hinge arm 510, and the second hinge ring 509 to adjust the distance between the pre-pressure roller 502 and the negative pressure chamber 4. This achieves the adjustment of the degree of compression of the textile fabric 2 by the adjusting pressure roller 501 and the pre-pressure roller 502.

[0057] During operation, the circulation pump operates, creating a negative pressure inside one of the connecting covers 907 via the exhaust pipe 908. Simultaneously, the circulation pump supplies air into the air inlet pipe 518. This air enters the air inlet pipe 518 through one end of the adjusting roller 501 and the pre-pressing roller 502, where it is heated by the electric heating rod 503 and becomes hot air. This hot air is then injected into the drying chamber 3 through the connecting pipe 517 from the other end of the adjusting roller 501 and the pre-pressing roller 502, and finally discharged through the air outlet at the bottom of the drying chamber 3. Since the connecting cover 907 is connected to the inside of the negative pressure chamber 4 through the negative pressure pipe 901, the vent 905 and the adjusting groove 803, when a negative pressure is generated inside the connecting cover 907, a negative pressure will be generated inside the negative pressure chamber 4. When a negative pressure is generated inside the negative pressure chamber 4, the hot air discharged from the drying chamber 3 will be drawn into the inside of the negative pressure chamber 4 through the through groove 702. During this process, the hot air will penetrate the textile fabric 2, so that both sides of the textile fabric 2 can be dried evenly, avoiding the occurrence of wrinkles caused by uneven drying of the textile fabric 2.

[0058] Simultaneously, when the textile fabric 2 is conveyed, it causes the adjusting roller 501 and the pre-press roller 502 to rotate. Since the adjusting roller 501 and the pre-press roller 502 are equipped with electric heating rods 503, they are heated. This means that when the textile fabric 2 drives the adjusting roller 501 and the pre-press roller 502, they can iron the textile fabric 2, improving the drying efficiency. At the same time, the drive motor drives one of the first drive shafts 601 to rotate, and under the meshing action of the two first gears 603, the two first drive shafts 601 rotate relative to each other, thereby causing the arc-shaped frames 602 on the two first drive shafts 601 to rotate. The two drive shafts 601 rotate alternately, providing auxiliary stretching and recovery to both sides of the textile fabric 2. This prevents certain amorphous areas of the textile fabric 2 from being unable to recover or only partially recovering due to external forces. At the same time, the rotation of the arc frame 602 driven by the two first drive shafts 601 also serves to shake the textile fabric 2, further ensuring that the textile fabric 2 is stretched and recovered evenly. Meanwhile, the guide patterns on the arc frame 602 can comb the textile fabric 2, causing it to form an elliptical arc structure. Under the action of the guide patterns, the middle of the textile fabric 2 will converge towards both ends, and the textile fabric 2 will be stretched evenly longitudinally, preventing the textile fabric 2 from folding and wrinkling.

[0059] When drying the textile fabric 2, the negative pressure chamber 4 should be divided into a pre-drying area and a normal drying area at both ends. That is, the position of the negative pressure chamber 4 corresponding to the entry of the textile fabric 2 into the device is the pre-drying area, and the other end of the negative pressure chamber 4 is the normal drying area. By rotating the second adjusting knob 804, the second adjusting knob 804 drives the adjusting tube 802 to rotate, and adjusts the overlap between the adjusting groove 803 at one end of the adjusting chamber 801 and the adjusting groove 803 at one end of the adjusting tube 802, so that the adjusting groove 803 at one end of the adjusting chamber 801 in the pre-drying area is aligned with the adjustment groove 803 at one end of the adjusting tube 802. The overlapping area of ​​the regulating groove 803 at one end of the regulating pipe 802 is smaller than the overlapping area of ​​the regulating groove 803 at one end of the regulating chamber 801 in the normal drying zone and the regulating groove 803 at one end of the regulating pipe 802. That is, the suction force generated inside the pre-drying zone is less than the suction force generated inside the normal drying zone. In other words, the efficiency of hot air penetration in the pre-drying zone of the textile fabric 2 is less than the efficiency of hot air penetration in the normal drying zone. This allows the textile fabric 2 to be pre-dried when it enters the device for drying, thus avoiding the occurrence of wrinkles caused by excessive temperature difference when the textile fabric 2 is rolled up.

[0060] By rotating the first adjustment knob 705, the first adjustment knob 705 can drive the second gear 703 to rotate via the second drive shaft 704. This causes the second gear 703 to move the movable plate 701 along the inner wall of the slide groove, thereby changing the overlapping portion between the upper through groove 702 of the negative pressure chamber 4 and the upper through groove 702 of the movable plate 701. When the power of the circulating pump remains constant, and the overlapping portion between the upper through groove 702 of the negative pressure chamber 4 and the upper through groove 702 of the movable plate 701 decreases, the speed of the hot air flow drawn into the negative pressure chamber 4 will increase, and the efficiency of the middle part of the textile fabric 2 being dried by hot air will be improved. Thus, the efficiency of the hot air drying of the textile fabric 2 can be increased or decreased as needed.

[0061] When the circulating pump creates negative pressure inside the connecting cover 907 via the exhaust pipe 908, the humid, hot air generated inside the negative pressure chamber 4, passing through the textile fabric 2, will penetrate the absorbent sponge 902 and be drawn away by the circulating pump through the vent 905, connecting cover 907, and exhaust pipe 908. During this process, the servo motor drives the drive roller 903 to rotate, which in turn drives the drive teeth 904 to rotate. This causes the drive teeth 904, in conjunction with the vent 905, to drive the negative pressure pipe 901 to rotate. The negative pressure pipe 901 then causes the absorbent sponge 902 to be squeezed and rotated by the squeeze roller 906. The squeeze roller 906 squeezes out the water inside the absorbent sponge 902, which then flows through the recessed guide at the bottom of the textile fabric 2 into the interior of the second hinge ring 509. Due to the eccentric arrangement of the drive roller 903 and the negative pressure pipe 901, the vent 905 at the bottom of the negative pressure pipe 901 is blocked by the drive teeth 904. When the vent 905 at the top of the negative pressure tube 901 is separated from the drive tooth 904, the hot air inside the negative pressure chamber 4 will enter the interior of the negative pressure tube 901 through the vent 905 at the top of the negative pressure tube 901, and will eventually be drawn away by the circulation pump through the connecting cover 907 and the exhaust pipe 908. Since the vent 905 at the bottom of the negative pressure tube 901 is engaged with the drive tooth 904, the vent 905 at the bottom of the negative pressure tube 901 is closed. When the negative pressure tube 901 drives the water-absorbing sponge 902 to rotate, the water-absorbing sponge 902 will form a rolling state with the bottom squeezing roller 906. Since the vent 905 at the bottom is blocked by the drive tooth 904, the water inside the water-absorbing sponge 902 can be squeezed out, preventing the humid hot air from affecting the drying of the textile fabric 2. At the same time, the hot air that has removed the moisture can be reused with a certain temperature, thereby improving the utilization rate of heat energy of the device.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hot air padding machine with a crease prevention function, characterized in that: The utility model relates to a drying rack, which comprises a drying chamber (3) at the top of the drying rack (1) for discharging hot air, and a negative pressure chamber (4) at the middle of the drying rack (1) for supporting the textile fabric (2). A heating assembly is arranged at the top of the negative pressure chamber (4) and is used to press and heat the textile fabric (2). The heating assembly comprises a plurality of adjusting pressure rollers (501) and pre-pressing rollers (502) rotatably connected to the surface of the textile fabric (2). Each of the adjusting pressure rollers (501) and the pre-pressing rollers (502) is provided with an electric heating rod (503) for heating air, so that the adjusting pressure rollers (501) and the pre-pressing rollers (502) can press and heat the textile fabric (2) when they are attached to the textile fabric (2). A vibration wrinkle prevention assembly is arranged at the middle of the top of the negative pressure chamber (4). The vibration wrinkle prevention assembly is used to uniformly stretch the textile fabric (2) by double-sided pressing to prevent the textile fabric (2) from wrinkling. An adjusting assembly two is arranged inside the negative pressure chamber (4). The adjusting assembly two is used to generate negative pressure and inhale the hot air discharged from the drying chamber (3) into the inside of the negative pressure chamber (4), so that the hot air discharged from the drying chamber (3) can uniformly penetrate the textile fabric (2). A groove is formed at the middle of the top of the negative pressure chamber (4), and the vibration wrinkle prevention assembly is arranged at the groove position of the top of the negative pressure chamber (4). The vibration wrinkle prevention assembly comprises two first driving shafts (601) arranged vertically one above the other. The first driving shafts (601) are movably penetrated and extended to both ends of the drying rack (1) through sealing bearings. One end of each of the first driving shafts (601) is fixedly connected with a first gear (603), and the surfaces of the two first gears (603) are engaged with each other. The surface of the first driving shaft (601) is fixedly connected with an arc-shaped frame (602) through a connecting rod. A plurality of arc-shaped frames (602) on the two first driving shafts (601) are arranged alternately. The arc-shaped frame (602) is in an arc-shaped structure, and the surface of the arc-shaped frame (602) is provided with a guide pattern for carding the textile fabric (2). When the arc-shaped frame (602) presses the textile fabric (2), the textile fabric (2) will be in an arc-shaped structure. Under the action of the textile fabric (2) being conveyed, the textile fabric (2) will be in contact with the guide pattern and be smoothed. One of the first driving shafts (601) is driven by a driving motor two. ​ Also include set in the top of the negative pressure chamber (4) and for adjusting the speed of the adjustment assembly one, to adjust the amount of wind through the textile fabric (2), the adjustment assembly one includes two movable plate (701) set in the top of the negative pressure chamber (4) inner wall both ends, the negative pressure chamber (4) corresponding to the inner wall of the movable plate (701) position of the chute, and the movable plate (701) is movably connected in the inner wall of the chute, the negative pressure chamber (4) corresponding to the side wall of the chute position is provided with a plurality of through slot, the middle of the movable plate (701) is provided with a plurality of through slot (702), so that the negative pressure chamber (4) on the through slot coincides with the through slot (702) on the movable plate (701) when the negative pressure chamber (4) is connected with the outside, otherwise the negative pressure chamber (4) on the through slot and the through slot (702) on the movable plate (701) is completely staggered when the negative pressure chamber (4) is closed with the outside, the front and rear ends of the movable plate (701) are engaged with the second gear (703), so that the second gear (703) rotates to drive the movable plate (701) to move in the inner wall of the chute, the middle of the second gear (703) is fixedly connected with the second drive shaft (704), and the movable plate (701) is movably penetrated and extends to both ends of the drying rack (1) through the sealing bearing, one end of the second drive shaft (704) is fixedly connected with the first adjusting knob (705), the front and rear ends of the movable plate (701) are respectively fixedly connected with the guide frame (706), and one end of the drying rack (1) corresponding to the position of the guide frame (706) is provided with a guide groove, the guide frame (706) is movably connected in the guide groove, so that the guide frame (706) can limit the movement of the movable plate (701) by cooperating with the guide groove; The adjustment assembly two includes an adjustment cavity (801) fixedly connected between the two drying racks (1), and the adjustment cavity (801) is fixedly connected to the middle of the inner wall of the negative pressure chamber (4), and the negative pressure chamber (4) is divided into two spaces, the middle of the adjustment cavity (801) is a waist-shaped structure, and the both ends of the inner wall of the adjustment cavity (801) are respectively rotatably connected with the adjusting pipe (802), and the adjusting pipe (802) is rotatably connected to one end of the opposite surface of the two drying racks (1) through the sealing bearing, one end of the adjusting pipe (802) is fixedly connected with the second adjusting knob (804), the both ends of the side wall of the adjusting pipe (802) are provided with adjusting grooves (803), and the both ends of the side wall of the adjusting cavity (801) are provided with adjusting grooves, so that the size of the wind pressure at both ends of the negative pressure chamber (4) can be changed when the coinciding part of the adjusting groove on the adjustment cavity (801) and the adjusting groove (803) on the adjusting pipe (802) changes.

2. The hot air padding machine with a crease prevention function according to claim 1, characterized in that: The number of the drying racks (1) is two, and the two drying racks (1) are fixedly connected at the front and back ends of the drying cavity (3) respectively, the textile fabric (2) is located between the drying cavity (3) and the negative pressure cavity (4), the drying cavity (3) is a middle hollow structure, and a plurality of air outlet holes for discharging hot air are arranged on the bottom of the drying cavity (3) corresponding to the position of the negative pressure cavity (4), the number of the pre-pressing rollers (502) is two, and the two pre-pressing rollers (502) are located at the two ends of the plurality of adjusting pressure rollers (501) respectively, the middle part of the drying rack (1) corresponding to the positions of the adjusting pressure roller (501) and the pre-pressing roller (502) is provided with a movable groove (504) respectively, and the adjusting pressure roller (501) and the pre-pressing roller (502) are movably connected to the inner wall of the movable groove (504), so that the movement of the adjusting pressure roller (501) and the pre-pressing roller (502) can be guided through the movable groove (504), the adjusting pressure roller (501) and the pre-pressing roller (502) are both hollow structures, the two ends of the adjusting pressure roller (501) are rotatably connected with a first hinged ring (505) respectively, one end of the first hinged ring (505) away from the adjusting pressure roller (501) is hingedly connected with a first hinged arm (506), one end of the first hinged arm (506) away from the first hinged ring (505) is hingedly connected with a hinged seat (507), the inner wall of the hinged seat (507) is fixedly connected with a connecting frame (508), the two ends of the pre-pressing roller (502) are rotatably connected with a second hinged ring (509) respectively, one end of the second hinged ring (509) away from the pre-pressing roller (502) is hingedly connected with a second hinged arm (510), one end of the second hinged arm (510) away from the first hinged ring (505) is fixedly connected with a driving frame (511), a first guide rod (512) is movably inserted into the middle part of the driving frame (511), and one end of the first guide rod (512) is fixedly connected to the connecting frame (508), one end of the connecting frame (508) and the driving frame (511) away from the first guide rod (512) is fixedly connected with a return spring (513), so that the pre-pressing roller (502) is tightly attached to the surface of the textile fabric (2) under the elastic action of the return spring (513) through the driving frame (511), the second hinged arm (510) and the second hinged ring (509), one end of the adjusting pressure roller (501) and the pre-pressing roller (502) is fixedly connected with a connecting pipe (517), the connecting pipe (517) is in communication with the interiors of the adjusting pressure roller (501) and the pre-pressing roller (502), and the connecting pipe (517) penetrates through the drying rack (1) and extends into the interior of the drying cavity (3), so that the drying cavity (3) is in communication with the interiors of the adjusting pressure roller (501) and the pre-pressing roller (502) through the connecting pipe (517), and the other end of the adjusting pressure roller (501) and the pre-pressing roller (502) is fixedly connected with an air inlet pipe (518) for air supply,And the inside of the air inlet pipe (518) is communicated with the inside of the conditioning pressure roller (501) and the pre-pressure roller (502).

3. The hot air padding machine with a crease prevention function according to claim 2, characterized in that: The middle part of the two connecting frames (508) is threadedly connected with a lead screw (514), the lead screw (514) passes through and extends to both ends of the drying frame (1) through a sealing bearing, the thread directions of the two ends of the lead screw (514) are opposite, the middle part of the connecting frame (508) is fixedly connected with a limiting frame (515), the middle part of the limiting frame (515) is movably inserted with a second guide rod (516), and the second guide rod (516) is fixedly connected to one end of the drying frame (1), so that the limiting frame (515) can guide the movement of the connecting frame (508) in cooperation with the second guide rod (516), and the lead screw (514) is driven by a driving motor.

4. The hot air padding machine with a crease prevention function according to claim 3, characterized in that: Further comprising a dehumidification assembly arranged inside the negative pressure cavity (4), which is used for dehumidifying the air sucked into the negative pressure cavity (4), so as to avoid the influence of humid air on the drying efficiency of the textile fabric (2), the dehumidification assembly comprises a negative pressure pipe (901) rotatably connected to the middle part of the drying frame (1) through a sealing bearing, and the negative pressure pipe (901) is located inside the adjusting cavity (801), the surface of the negative pressure pipe (901) is fixedly connected with a water absorption sponge (902), the inner wall of the negative pressure pipe (901) is rotatably connected with a driving roller (903), and the negative pressure pipe (901) and the driving roller (903) are eccentrically arranged, the surface of the driving roller (903) is fixedly connected with a driving tooth (904), and the side wall of the negative pressure pipe (901) is provided with a plurality of air holes (905) corresponding to the position of the driving tooth (904), and the driving tooth (904) and the air hole (905) are matched in size, so that the driving roller (903) can be driven to rotate by the driving tooth (904) and the corresponding air hole (905) when the driving roller (903) rotates, and the bottom of the water absorption sponge (902) is tightly attached to a squeezing roller (906), and the squeezing roller (906) is rotatably connected to one end of the opposite surface of the two drying frames (1) through a bearing.

5. The hot air padding machine with a crease prevention function according to claim 4, characterized in that: The bottom of the negative pressure cavity (4) is fixedly embedded with a water outlet pipe (909) communicated with the inside of the adjusting cavity (801), the inside of the water outlet pipe (909) is provided with a one-way valve, so that the moisture in the inside of the adjusting cavity (801) can be discharged, the middle part of the water outlet pipe (909) is a ring-shaped hollow structure, and the screw rod (514) movably penetrates and extends to both ends of the water outlet pipe (909), the bottom of the negative pressure cavity (4) is recessed to the position of the water outlet pipe (909), so that the water at the bottom of the adjusting cavity (801) can flow to the inside of the water outlet pipe (909) through the recess, the positions corresponding to both ends of the negative pressure pipe (901) of the drying rack (1) are fixedly connected with connecting covers (907) respectively, and the driving roller (903) movably penetrates and extends to both ends of the connecting cover (907) through a sealing bearing, the driving roller (903) is driven by a servo motor, and the side wall of one of the connecting covers (907) is fixedly connected with an air exhaust pipe (908) communicated with the inside of the connecting cover (907), the air exhaust pipe (908) is connected with the air inlet end of the circulating pump, and the air inlet pipe (518) is connected with the air outlet end of the circulating pump, so that the circulating air duct is formed among the drying cavity (3), the negative pressure cavity (4), the second adjusting assembly and the dehumidifying assembly.

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