Surface printing device for polyester cloth

Abstract

The utility model discloses a surface printing device for polyester cloth relates to printing device technical field, including bottom plate, guide unit, printing unit and hot -blast drying unit, the bottom plate upper end is installed with guide unit, printing unit and hot -blast drying unit, the lower end four corners fixed connection of bottom plate has four support legs, printing unit contains first mounting plate, printing wheel, heating plate, printing arc plate and motor no.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, specifically to a surface printing device for polyester fabric. Background Technology

[0002] Printing is a process of applying patterns to textiles using dyes or pigments. Printing can be divided into fabric printing, wool strip printing, and yarn printing, with fabric printing being the most common. Printed fabrics are artistic products, and the appropriate printing process is selected based on the designed pattern.

[0003] Among the existing technologies, the surface printing device for polyester fabric with authorization announcement number CN318838940U includes a machine body, a motor, an electric push rod and a transmission roller mechanism. One side of the machine body is fixedly connected to the motor, the top of the machine body is fixedly connected to the electric push rod, the transmission roller mechanism is fixedly connected to both sides of the top of the machine body, and a cleaning mechanism is fixedly connected to the top of the machine body.

[0004] In existing technologies, uneven coloring and low precision in complex patterns are common problems: traditional printing devices use a single material supply system, which cannot control the dye flow rate in different areas, resulting in blurred boundaries and uneven color penetration in complex patterns; moreover, the dye temperature control is not precise, and cold dyes are difficult to adapt to the high-temperature coloring characteristics of polyester fabric, which easily produces color spots, drips and waste materials. Incomplete drying leads to dye smudging. Existing equipment relies on a single hot air drying, which can only deal with the surface moisture of the fabric. The residual moisture inside can easily cause secondary diffusion of dye, which has a significant impact on dark or high-precision patterns, resulting in a low finished product qualification rate. To address this, we propose a surface printing device for polyester fabric. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a surface printing device for polyester fabric, which can achieve precise coloring of complex patterns in different areas, reduce dye waste, make the dye evenly diffuse to the fabric fibers, eliminate dripping and color spots, and avoid dye bleeding caused by internal moisture residue. It can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a surface printing device for polyester fabric, comprising a base plate, a guiding unit, a printing unit, and a hot air drying unit;

[0007] Base plate: The upper end is equipped with a guide unit, a printing unit and a hot air drying unit, and the lower end of the base plate is fixedly connected to four support legs at the four corners;

[0008] The printing unit comprises a first mounting plate, a printing wheel, a heating plate, a printing arc plate, and a second motor. Two first mounting plates are fixedly connected to the upper left and right sides of the base plate. A printing wheel is rotatably connected between the upper ends of the first mounting plates. Multiple heating plates are located on the outer side of the printing wheel. A printing arc plate is snapped into the middle of the outer side of the printing wheel. A second motor is fixedly connected to the left end of the first mounting plate, and the output shaft of the second motor is fixedly connected to the printing wheel. The base plate serves as a foundation platform, with support legs fixed at its four corners. First mounting plates are mounted on its left and right sides, and a printing wheel is rotatably connected between the two first mounting plates. Heating plates are embedded in the outer side of the printing wheel and snapped into the printing arc plate. The second motor drives the printing wheel, causing it to rotate. The heating plates raise the printing temperature, and the printing arc plate contacts the fabric to achieve transfer printing. The heating plates are integrated into the printing wheel to improve thermal efficiency. The snap-fit ​​printing arc plate facilitates pattern changes. The motor drive ensures printing uniformity.

[0009] Furthermore, the printing unit also includes a storage tank, a water pump, a water supply pipe, a heating box, a multi-way solenoid valve, a second mounting plate, and an arc-shaped sponge cover. The storage tank is fixedly connected to the lower center of the base plate, and the water pump is fixedly connected to the right end of the storage tank. The metal buckle of the water pump is connected to the storage tank. The outlet of the storage tank is fixedly connected to one end of the water supply pipe, and the other end of the water supply pipe is fixedly connected to the inlet of the heating box. The outlet of the heating box is connected to the inlet of the multi-way solenoid valve. A second mounting plate is fixedly connected to the upper end of the two first mounting plates. The heating box is fixedly connected to the upper end of the second mounting plate. The multi-way solenoid valve is fixedly connected to the inner side of the second mounting plate. An arc-shaped sponge cover is fixedly connected to the lower end of the multi-way solenoid valve. Multiple nozzles are installed at the outlet of the multi-way solenoid valve. A storage tank is located at the bottom of the base plate, and a water pump connects the storage tank to the water supply pipe. The water supply pipe connects to the heating box, and its outlet is connected to a multi-way solenoid valve. The second mounting plate fixes the heating box and the multi-way solenoid valve. The lower end of the multi-way solenoid valve is equipped with an arc-shaped sponge cover and multiple nozzles. The water pump draws dye to the heating box for heating, and the multi-way solenoid valve distributes the dye through the nozzles to the arc-shaped sponge cover for uniform penetration. The heating box has independent temperature control. The multi-way solenoid valve realizes zoned material supply. The arc-shaped sponge cover ensures uniform diffusion of the dye.

[0010] Furthermore, the printing unit also includes a hydraulic press, a heating rod mounting frame, a heating rod, an extrusion cylinder, a second rubber sleeve, and a telescopic rod. A heating rod mounting frame is slidably connected to the inner side of the first mounting plate. A hydraulic press is fixedly connected to the left side of the base plate, and a heating rod mounting frame is fixedly connected to the upper end of the hydraulic press. A telescopic rod is fixedly connected to the right side of the base plate, and the upper end of the telescopic rod is fixedly connected to a heating rod mounting frame. Heating rods are fixedly connected between the heating rod mounting frames. An extrusion cylinder is rotatably connected to the outer side of the heating rod, and a second rubber sleeve is provided on the outer side of the extrusion cylinder. A heating rod mounting frame is slidably connected to the inner side of the first mounting plate. The hydraulic press drives the left heating rod mounting frame, and the telescopic rod supports the right side. A heating rod is installed between the two heating rod mounting frames, and an extrusion cylinder is rotatably connected to its outer side. The extrusion cylinder is covered with a second rubber sleeve. The hydraulic press and the telescopic rod synchronously adjust the height of the extrusion cylinder. The heating rod preheats the cylinder, and the second rubber sleeve presses the fabric to promote dye penetration. Dual drive precisely controls the pressure. The heating rod preheats to enhance coloring; the second rubber sleeve prevents fabric damage.

[0011] Furthermore, the guide unit includes a mounting frame, a sliding block, a guide wheel, a rubber sleeve, a motor, and a bidirectional threaded rod. Two mounting frames are fixedly connected to the upper front side of the base plate, corresponding to the left and right sides. Two sliding blocks are slidably connected to the inner side of the mounting frames. A guide wheel is rotatably connected between the two corresponding sliding blocks. A rubber sleeve is provided on the outer side of the guide wheel. A bidirectional threaded rod is rotatably connected to the inner side of the right mounting frame. The bidirectional threaded rod is threadedly connected to the sliding block. A motor is fixedly connected to the left end of the sliding block. The output shaft of the motor is fixedly connected to the output shaft of the guide wheel.

[0012] Two mounting frames are installed on the front side of the base plate, with sliding blocks slidably connected inside; a guide wheel rotates between the left and right sliding blocks, and a rubber sleeve is wrapped around the outside; a bidirectional threaded rod adjusts the distance between the sliding blocks; a motor drives the guide wheel, and rotating the bidirectional threaded rod synchronously adjusts the distance between the two guide wheels; the motor drives the guide wheel to transmit the fabric, and the bidirectional threaded rod achieves stepless width adjustment; the rubber sleeve increases friction and prevents slipping; the motor drive ensures feeding accuracy.

[0013] Furthermore, the hot air drying unit includes an air box, a heating grid, a roller mounting plate, and rollers. The air box is fixedly connected to the upper rear side of the base plate, the heating grid is fixedly connected to the upper end of the air box, and four roller mounting plates are fixedly connected to the four corners of the upper end of the air box. Two rollers are rotatably connected between the two corresponding roller mounting plates on the left and right sides.

[0014] Instructions for use: The air box is fixed to the back of the base plate, and a heating grid is installed on it; there are roller mounting plates at the four corners, and two rollers are rotatably connected between the left and right mounting plates. The heating grid heats the airflow, and the air box blows hot air to dry the fabric; the rollers support the fabric transmission, and the hot air drying efficiency is high; the rollers reduce fabric friction; the layered airflow design avoids print deformation.

[0015] Furthermore, the hot air drying unit also includes a mounting frame and an infrared radiation heater. The mounting frame is fixedly connected to the upper rear side of the base plate, and the infrared radiation heater is fixedly connected to the lower middle part of the mounting frame.

[0016] An mounting bracket is installed on the back of the base plate, with an infrared radiation heater fixed at its lower end. The infrared radiation heater radiates heat in a directional manner, deeply drying the fabric. The infrared heating has strong penetration and is energy-efficient; the directional radiation protects the integrity of the printed layer.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This surface printing device for polyester fabric has the following advantages:

[0018] 1. This polyester fabric surface printing device significantly improves printing accuracy and color uniformity by integrating an intelligent temperature control and zoned material supply system. The heating chamber has independent temperature control: it precisely adjusts the dye temperature to adapt to the high-temperature coloring characteristics of polyester fabric, avoiding the uneven penetration problem caused by traditional cold dyes. The multi-channel solenoid valve zoned material supply controls the dye flow of different nozzles, enabling precise zoned coloring of complex patterns and reducing dye waste. The arc-shaped sponge cover ensures uniform penetration, and the sponge releases pressure to allow the dye to diffuse evenly to the fabric fibers, eliminating drips and color spots.

[0019] 2. This polyester fabric surface printing device uses a bellows and a high-efficiency heating grid to generate a strong and uniform hot airflow that acts rapidly from top to bottom on the surface of the printed fabric. This process instantly evaporates the free moisture on the fabric surface, allowing the surface dye to quickly fix and effectively lock the pattern boundaries, preventing the color from spreading laterally due to moisture flow during the initial drying stage. The integrated infrared radiation heater has excellent penetrating power with its specific wavelength of infrared radiation, reaching deep into the polyester fiber bundles and dye layer. It efficiently disperses and evaporates deep residual moisture that is difficult for conventional hot air to reach, ensuring that the printed pattern is thoroughly dried and cured from the surface to the depths, avoiding dye bleeding caused by residual internal moisture. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the left side structure of this utility model;

[0022] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0023] In the diagram: 1. Base plate, 2. Support leg, 3. Guide unit, 31. Mounting frame, 32. Sliding block, 33. Guide wheel, 34. Rubber sleeve one, 35. Motor one, 36. Bidirectional threaded rod, 4. Printing unit, 41. First mounting plate, 42. Hydraulic press, 43. Heating rod mounting bracket, 44. Heating rod, 45. Extrusion cylinder, 46. Rubber sleeve two, 47. Printing wheel, 48. Heating plate, 49. Printing arc plate, 410. Storage box, 411. Water pump, 412. Water supply pipe, 413. Heating box, 414. Multi-way solenoid valve, 415. Second mounting plate, 416. Arc-shaped sponge cover, 417. Telescopic rod, 418. Motor two, 5. Hot air drying unit, 51. Air box, 52. Heating grid, 53. Roller mounting plate, 54. Roller, 55. Mounting bracket, 56. Infrared radiation heater. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-3 This embodiment provides a technical solution: a surface printing device for polyester fabric, including a base plate 1, a guiding unit 3, a printing unit 4 and a hot air drying unit 5;

[0026] Base plate 1: The upper end is equipped with a guide unit 3, a printing unit 4 and a hot air drying unit 5, and the lower end of the base plate 1 is fixedly connected with four support legs 2 at the four corners.

[0027] Printing unit 4 includes a first mounting plate 41, a printing wheel 47, a heating plate 48, a printing arc plate 49, and a second motor 418. Two first mounting plates 41 are fixedly connected to the upper left and right sides of the base plate 1. A printing wheel 47 is rotatably connected to the upper end of the first mounting plates 41. Multiple heating plates 48 are provided on the outer side of the printing wheel 47. A printing arc plate 49 is snapped into the middle of the outer side of the printing wheel 47. A second motor 418 is fixedly connected to the left end of the first mounting plate 41. The output shaft of the second motor 418 is fixedly connected to the printing wheel 47. The base plate 1 serves as the basic platform, with support legs 2 fixed at the four corners. First mounting plates 41 are installed on the left and right sides of the base plate 1, and printing wheels 47 are rotatably connected between the two first mounting plates 41. A heating plate 48 is embedded on the outside of the printing wheel 47 and is snapped into a printing arc plate 49. A second motor 418 drives the printing wheel 47, which rotates the printing wheel 47. The heating plate 48 increases the printing temperature, and the printing arc plate 49 contacts the fabric to achieve transfer printing. The heating plate 48 is integrated into the printing wheel to improve thermal efficiency. The snap-fit ​​printing arc plate 49 facilitates pattern replacement. The motor drive ensures printing uniformity.

[0028] The printing unit 4 also includes a storage tank 410, a water pump 411, a water supply pipe 412, a heating box 413, a multi-way solenoid valve 414, a second mounting plate 415, and an arc-shaped sponge cover 416. The storage tank 410 is fixedly connected to the lower center of the base plate 1, and the water pump 411 is fixedly connected to the right end of the storage tank 410. The metal buckle of the water pump 411 is connected to the storage tank 410. The water outlet of the storage tank 410 is fixedly connected to one end of the water supply pipe 412, and the other end of the water supply pipe 412 is fixedly connected to the heating box 413. The inlet of the heating box 413 is fixedly connected, and the outlet of the heating box 413 is connected to the inlet of the multi-way solenoid valve 414. The upper ends of the two first mounting plates 41 are fixedly connected to the second mounting plate 415. The upper end of the second mounting plate 415 is fixedly connected to the heating box 413. The inner side of the second mounting plate 415 is fixedly connected to the multi-way solenoid valve 414. The lower end of the multi-way solenoid valve 414 is fixedly connected to the arc-shaped sponge cover 416. The outlet of the multi-way solenoid valve 414 is equipped with multiple nozzles. A storage tank 410 is provided at the lower end of the base plate 1. A water pump 411 connects the storage tank 410 to the water supply pipe 412. The water supply pipe 412 is connected to the heating box 413, and its outlet is connected to a multi-way solenoid valve 414. A second mounting plate 415 fixes the heating box 413 and the multi-way solenoid valve 414. An arc-shaped sponge cover 416 is installed at the lower end of the multi-way solenoid valve 414 and multiple nozzles are provided. The water pump 411 draws dye to the heating box 413 for heating. The multi-way solenoid valve 414 distributes the dye through the nozzles to the arc-shaped sponge cover 416 for uniform penetration. The heating box 413 is independently temperature controlled. The multi-way solenoid valve 414 realizes zoned material supply. The arc-shaped sponge cover 416 ensures uniform diffusion of dye.

[0029] The printing unit 4 also includes a hydraulic press 42, a heating rod mounting bracket 43, a heating rod 44, an extrusion cylinder 45, a rubber sleeve 46, and a telescopic rod 417. The heating rod mounting bracket 43 is slidably connected to the inner side of the first mounting plate 41. The hydraulic press 42 is fixedly connected to the left side of the base plate 1. The heating rod mounting bracket 43 is fixedly connected to the upper end of the hydraulic press 42. The telescopic rod 417 is fixedly connected to the right side of the base plate 1. The upper end of the telescopic rod 417 is fixedly connected to a heating rod mounting bracket 43. The heating rod 44 is fixedly connected between the heating rod mounting brackets 43. The extrusion cylinder 45 is rotatably connected to the outer side of the heating rod 44. The rubber sleeve 46 is provided on the outer side of the extrusion cylinder 45. The heating rod mounting bracket 43 is slidably connected to the inner side of the first mounting plate 41. The hydraulic press 42 drives the left heating rod mounting bracket 43, and the telescopic rod 417 supports the right side. A heating rod 44 is installed between the two heating rod mounting brackets 43, and the outer side of the heating rod 44 is rotatably connected to the extrusion cylinder 45. The extrusion cylinder 45 is covered with a rubber sleeve 46. The hydraulic press 42 and the telescopic rod 417 synchronously adjust the height of the extrusion cylinder 45. The heating rod 44 preheats the cylinder body, and the rubber sleeve 46 presses the fabric to promote dye penetration. The dual drive precisely controls the pressure. The heating rod 44 preheats to enhance coloring. The rubber sleeve 46 prevents damage to the fabric.

[0030] The guiding unit 3 includes a mounting frame 31, a sliding block 32, a guide wheel 33, a rubber sleeve 34, a motor 35, and a bidirectional threaded rod 36. Two mounting frames 31 are fixedly connected to the upper front side of the base plate 1, corresponding to the left and right sides. Two sliding blocks 32 are slidably connected to the inner side of the mounting frame 31. A guide wheel 33 is rotatably connected between the two corresponding sliding blocks 32. A rubber sleeve 34 is provided on the outer side of the guide wheel 33. A bidirectional threaded rod 36 is rotatably connected to the inner side of the right mounting frame 31. The bidirectional threaded rod 36 is threadedly connected to the sliding block 32. A motor 35 is fixedly connected to the left end of the sliding block 32. The output shaft of the motor 35 is fixedly connected to the output shaft of the guide wheel 33.

[0031] Two mounting frames 31 are installed on the front side of the base plate 1, with sliding blocks 32 slidably connected inside; guide wheels 33 rotate between the left and right sliding blocks 32, and rubber sleeves 34 are wrapped on the outside; a bidirectional threaded rod 36 adjusts the distance between the sliding blocks 32; a motor 35 drives the guide wheels 33, and the bidirectional threaded rod 36 rotates to adjust the distance between the two guide wheels 33 simultaneously; the motor 35 drives the guide wheels 33 to transmit the fabric, and the bidirectional threaded rod 36 achieves stepless width adjustment; the rubber sleeve 34 increases friction and prevents slipping; the motor drive ensures feeding accuracy.

[0032] The hot air drying unit 5 includes an air box 51, a heating grid 52, a roller mounting plate 53, and rollers 54. The air box 51 is fixedly connected to the upper rear side of the base plate 1. The heating grid 52 is fixedly connected to the upper end of the air box 51. Four roller mounting plates 53 are fixedly connected to the four corners of the upper end of the air box 51. Two rollers 54 are rotatably connected between two corresponding roller mounting plates 53 on the left and right.

[0033] Instructions for use: The air box 51 is fixed to the rear side of the base plate 1, and the heating net 52 is installed on it; the four corners are equipped with roller mounting plates 53, and two rollers 54 are rotatably connected between the left and right mounting plates 53. The heating net 52 heats the airflow, and the air box 51 blows hot air to dry the fabric; the rollers 54 support the fabric transmission, and the hot air drying efficiency is high; the rollers 54 reduce fabric friction; the layered airflow design avoids print deformation.

[0034] The hot air drying unit 5 also includes a mounting bracket 55 and an infrared radiation heater 56. The mounting bracket 55 is fixedly connected to the upper rear side of the base plate 1, and the infrared radiation heater 56 is fixedly connected to the lower middle part of the mounting bracket 55.

[0035] An mounting bracket 55 is installed on the rear side of the base plate 1, and an infrared radiation heater 56 is fixed at its lower end. The infrared radiation heater 56 radiates heat in a directional manner to deeply dry the fabric. The infrared heating has strong penetration and is energy-efficient. The directional radiation protects the integrity of the printed layer.

[0036] The working principle of the polyester fabric surface printing device provided by this utility model is as follows: During operation, the fabric first enters the guide unit 3: the bidirectional threaded rod 36 is rotated to synchronously adjust the distance between the two sliding blocks 32, so that the guide wheel 33 can adapt to different fabric thicknesses; the motor 35 drives the guide wheel 33 wrapped with a rubber sleeve 34 to transmit the fabric, ensuring stable feeding. Then the fabric enters the printing unit 4. The water pump 411 draws dye from the storage tank 410, and delivers it to the heating box 413 for heating through the water pipe 412. The multi-way solenoid valve 414 controls the dye flow rate in sections, and the dye is evenly sprayed onto the arc-shaped sponge cover 416 through the nozzle to penetrate the fabric; Motor 418 drives printing wheel 47 to rotate, heating plate 48 preheats the wheel, and printing arc plate 49 contacts the fabric to complete the transfer. Hydraulic press 42 and telescopic rod 417 work together to adjust the height of extrusion cylinder 45. After heating rod 44 preheats the cylinder, rubber sleeve 46 presses the fabric to promote deep dye penetration. Finally, the fabric enters hot air drying unit 5. Air box 51 blows airflow heated by heating net 52 for surface drying. Infrared radiation heater 56 directionally radiates heat to achieve deep drying. Rolling wheel 54 supports the transmission process to avoid friction damage. The entire process ensures printing quality through precise temperature control, zoned material supply, and pressure adjustment.

[0037] It is worth noting that in the above embodiments, the input terminals of the motor 35, hydraulic press 42, heating rod 44, heating plate 48, water pump 411, multi-way solenoid valve 414, motor 418, air box 51, heating grid 52, and infrared radiation heater 56 are electrically connected to the output terminal of an external power supply through an external PLC controller. The motor 35 and motor 418 are servo motors. The external PLC controller controls the operation of the motor 35, hydraulic press 42, heating rod 44, heating plate 48, water pump 411, multi-way solenoid valve 414, motor 418, air box 51, heating grid 52, and infrared radiation heater 56 using methods commonly used in the prior art.

[0038] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A surface printing device for polyester fabric, characterized in that: It includes a base plate (1), a guide unit (3), a printing unit (4), and a hot air drying unit (5); Base plate (1): The upper end is equipped with a guide unit (3), a printing unit (4) and a hot air drying unit (5), and the lower end of the base plate (1) is fixedly connected with four support legs (2). Printing unit (4): includes a first mounting plate (41), a printing wheel (47), a heating plate (48), a printing arc plate (49), and a second motor (418). Two first mounting plates (41) are fixedly connected to the upper left and right sides of the base plate (1). A printing wheel (47) is rotatably connected between the upper ends of the first mounting plates (41). Multiple heating plates (48) are provided on the outer side of the printing wheel (47). A printing arc plate (49) is snapped into the middle of the outer side of the printing wheel (47). A second motor (418) is fixedly connected to the left end of the first mounting plate (41). The output shaft of the second motor (418) is fixedly connected to the printing wheel (47).

2. The surface printing device for polyester fabric according to claim 1, characterized in that: The printing unit (4) also includes a storage tank (410), a water pump (411), a water pipe (412), a heating box (413), a multi-way solenoid valve (414), a second mounting plate (415), and an arc-shaped sponge cover (416). The storage tank (410) is fixedly connected to the lower middle part of the base plate (1). The water pump (411) is fixedly connected to the right end of the storage tank (410). The metal buckle of the water pump (411) is connected to the storage tank (410). The outlet of the storage tank (410) is fixedly connected to one end of the water pipe (412). The other end is fixedly connected to the inlet of the heating box (413), the outlet of the heating box (413) is connected to the inlet of the multi-way solenoid valve (414), the upper ends of the two first mounting plates (41) are fixedly connected to the second mounting plate (415), the upper end of the second mounting plate (415) is fixedly connected to the heating box (413), the inner side of the second mounting plate (415) is fixedly connected to the multi-way solenoid valve (414), the lower end of the multi-way solenoid valve (414) is fixedly connected to the arc-shaped sponge cover (416), and the outlet of the multi-way solenoid valve (414) is equipped with multiple nozzles.

3. The surface printing device for polyester fabric according to claim 2, characterized in that: The printing unit (4) also includes a hydraulic press (42), a heating rod mounting bracket (43), a heating rod (44), an extrusion cylinder (45), a rubber sleeve (46), and a telescopic rod (417). The heating rod mounting bracket (43) is slidably connected to the inner side of the first mounting plate (41). The hydraulic press (42) is fixedly connected to the left side of the base plate (1). The heating rod mounting bracket (43) is fixedly connected to the upper end of the hydraulic press (42). The telescopic rod (417) is fixedly connected to the right side of the base plate (1). The upper end of the telescopic rod (417) is fixedly connected to a heating rod mounting bracket (43). The heating rods (44) are fixedly connected between the heating rod mounting brackets (43). The extrusion cylinder (45) is rotatably connected to the outer side of the heating rod (44). The rubber sleeve (46) is provided on the outer side of the extrusion cylinder (45).

4. The surface printing device for polyester fabric according to claim 1, characterized in that: The guide unit (3) includes a mounting frame (31), a sliding block (32), a guide wheel (33), a rubber sleeve (34), a motor (35), and a bidirectional threaded rod (36). Two mounting frames (31) are fixedly connected to the upper front side of the base plate (1) on the left and right sides respectively. Two sliding blocks (32) are slidably connected to the inner side of the mounting frame (31). A guide wheel (33) is rotatably connected between the two sliding blocks (32) on the left and right sides respectively. A rubber sleeve (34) is provided on the outer side of the guide wheel (33). A bidirectional threaded rod (36) is rotatably connected to the inner side of the right mounting frame (31). The bidirectional threaded rod (36) is threadedly connected to the sliding block (32). A motor (35) is fixedly connected to the left end of the sliding block (32). The output shaft of the motor (35) is fixedly connected to the output shaft of the guide wheel (33).

5. The surface printing device for polyester fabric according to claim 1, characterized in that: The hot air drying unit (5) includes a wind box (51), a heating grid (52), a roller mounting plate (53), and rollers (54). The wind box (51) is fixedly connected to the upper rear side of the base plate (1). The heating grid (52) is fixedly connected to the upper end of the wind box (51). Four roller mounting plates (53) are fixedly connected to the four corners of the upper end of the wind box (51). Two rollers (54) are rotatably connected between the two corresponding roller mounting plates (53) on the left and right sides.

6. The surface printing device for polyester fabric according to claim 5, characterized in that: The hot air drying unit (5) also includes a mounting bracket (55) and an infrared radiation heater (56). The mounting bracket (55) is fixedly connected to the upper rear side of the base plate (1), and the infrared radiation heater (56) is fixedly connected to the lower middle part of the mounting bracket (55).

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