Baking apparatus and printing system

Abstract

A baking apparatus and a printing system. The printing system comprises a printer and a baking apparatus. The baking apparatus comprises: a housing (1); and a buffer assembly (2), a powder application assembly (3), a conveying assembly (4) and a baking assembly (5), which are arranged in the housing (1), wherein a film material (100) enters the housing (1) through a feeding port (11) of the housing (1); the buffer assembly (2) is arranged between the feeding port (11) and the conveying assembly (4) and is used for guiding to the conveying assembly (4) the film material (100) entering from the feeding port (11); the powder application assembly (3) is arranged between the feeding port (11) and the conveying assembly (4); the buffer assembly (2) passes through the powder application assembly (3), and the powder application assembly (3) is used for accommodating hot-melt adhesive powder and is used for applying the hot-melt adhesive powder to the film material (100); the conveying assembly (4) is used for conveying the film material (100); and the baking assembly (5) is arranged in the conveying path of the film material (100) and is used for baking the film material (100), such that the hot-melt adhesive powder melts onto the film material (100).

Description

Baking equipment and printing system

[0001] This application claims priority to Chinese Patent Application No. 2024115325353, filed on October 30, 2024, entitled “Baking Equipment and Printing System”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of printing technology, and in particular to a baking apparatus and a printing system. Background Technology

[0003] Direct-to-Film (DTF) printing involves directly printing images or designs onto a specialized film, which is then heat-transferred onto various textiles or other materials. The advantages of DTF printing include high precision, high color saturation, and excellent durability. DTF printing can achieve more complex patterns and colors, and is easy to operate with high production efficiency. Furthermore, DTF printing is environmentally friendly and widely used in industries such as apparel, advertising, and gifts, providing designers and businesses with greater creative space and production flexibility. Summary of the Invention

[0004] This application discloses a baking device, which includes a housing, and a buffer assembly, a powder-spreading assembly, a conveying assembly, and a baking assembly disposed within the housing. The housing has an inlet through which a film material can enter the housing. The buffer assembly is disposed between the inlet and the conveying assembly, and is used to guide the film material entering from the inlet to the conveying assembly. The powder-spreading assembly is disposed between the inlet and the conveying assembly, and the buffer assembly passes through the powder-spreading assembly. The powder-spreading assembly is used to contain hot melt adhesive powder and to spread the hot melt adhesive powder onto the film material. The conveying assembly is used to convey the film material. The baking assembly is disposed in the conveying path of the film material and is used to bake the film material so that the hot melt adhesive powder melts onto the film material.

[0005] Another aspect of this application provides a printing system including a printer and the baking device; the printer is used to print a pattern on a film material, and the baking device is disposed downstream of the printer and is used to bake the film material. Attached Figure Description

[0006] Figure 1 is a schematic diagram of the printing system provided in one embodiment of this application.

[0007] Figure 2 is a schematic diagram of the baking equipment provided in one embodiment of this application from a first-view perspective.

[0008] Figure 3 is a cross-sectional view of Figure 2 along the AA direction.

[0009] Figure 4 is a schematic diagram of the internal structure of the baking device provided in one embodiment of this application from a first-view perspective.

[0010] Figure 5 is a schematic diagram of the internal structure of the baking device provided in one embodiment of this application from a second perspective.

[0011] Figure 6 is a schematic diagram of the structure of the powder-spraying component and the buffer component provided in one embodiment of this application.

[0012] Figure 7 is a schematic diagram of the structure of a buffer component provided in one embodiment of this application.

[0013] Figure 8 is a structural schematic diagram of the transmission component provided in one embodiment of this application from a first-view perspective.

[0014] Figure 9 is a structural schematic diagram of the transmission component provided in one embodiment of this application from a second perspective.

[0015] Figure 10 is an enlarged view of region C in Figure 9.

[0016] Figure 11 is an enlarged view of region B in Figure 3.

[0017] Figure 12 is a schematic diagram of the powder-spreading mechanism provided in one embodiment of this application.

[0018] Figure 13 is a schematic diagram of the structure of the powder-spreading roller provided in one embodiment of this application.

[0019] Figure 14 is a structural schematic diagram of the powder-spraying component provided in one embodiment of this application from a first-view perspective.

[0020] Figure 15 is a structural schematic diagram of the baking device provided in one embodiment of this application from a second perspective.

[0021] Figure 16 is a schematic diagram of the internal structure of the powder-spraying component provided in one embodiment of this application.

[0022] Figure 17 is a structural schematic diagram of the powder-spraying component provided in one embodiment of this application from a second perspective.

[0023] Figure 18 is a cross-sectional view of Figure 17 along the EE direction.

[0024] Figure 19 is a schematic diagram of the structure of a baking assembly provided in one embodiment of this application.

[0025] Figure 20 is a cross-sectional view of Figure 19 along the DD direction.

[0026] The reference numerals in the attached drawings are explained as follows: 001-Printing system; 01-Baking equipment; 02-Printer; 1-Outer shell; 11-Feed inlet; 12-Powder filling inlet; 13-Frame; 14-Side plate; 15-Installation space; 16-First receiving cavity; 17-Second receiving cavity; 2-Buffer assembly; 21-Swing component; 211-Feeding surface; 2111-First conveyor sub-surface; 2112-Second conveyor sub-surface; 212-Pressure part; 213-Powder leakage hole; 214-Allowing groove; 22-Second motor; 23-Second sensor; 24-Bracket; 241-Mounting plate; 25-Limiting component; 26-Third sensor; 27-First sensor; 3-Powder dispensing assembly; 31-Powder dispensing mechanism; 311-Powder dispensing bin; 3111-Reinforcing rib; 3 13-Powder spreading roller; 3131-Powder trough; 314-Third motor; 315-Powder scraper; 32-Powder storage mechanism; 321-Powder storage bin; 321a-Powder recovery section; 321a1-Powder recovery chamber; 321b-Powder storage section; 321b1-Powder storage chamber; 3211-Powder guide groove; 3212-First limiting protrusion; 3213-Second limiting protrusion; 3214-First through hole; 32141-First notch; 3215-Powder recovery port; 3216-Sleeve; 322-Powder adding bin; 3222-Third limiting protrusion; 323-Fourth sensor; 324-Rebound component; 325-Grate; 33-Powder circulation mechanism; 331-Powder circulation synchronous belt; 3311-Gear body; 3312- Main body; 332-Fourth motor; 333-Tensioning mechanism; 3331-Tensioning component; 3332-Tensioning screw; 334-Powder unloading component; 335-Transmission structure; 3351-Driving wheel; 3352-Driven wheel; 34-Powder patting mechanism; 341-Fifth motor; 342-Rotating shaft; 343-Patting component; 3431-Clamping body; 3432-Flexible component; 4-Transmission assembly; 41-First transmission sub-assembly; 411-First transmission module; 412-First transmission component; 413-First limiting component; 4131-Third guide component; 42-Second transmission sub-assembly; 421-Second transmission module; 422-Second transmission component; 423-Second limiting component; 43-Transmission sub-assembly; 431-First gear; 432- Second gear; 433-Third gear; 44-First motor; 45-Guide component; 451-First guide component; 452-Second guide component; 46-First mating part; 47-Code disk; 48-Sixth sensor; 5-Baking assembly; 51-Box body; 511-Air outlet; 512-Aluminum foil layer; 513-Insulation material layer; 514-Mirror layer; 52-Heating element; 53-Exhaust structure; 531-Exhaust fan; 532-First exhaust pipe; 533-Second exhaust pipe; 54-First fan; 55-Isolation box; 6-Powder filling cover; 7-Receiving assembly; 71-Receiving bin; 711-Receiving chamber; 712-Receiving port; 72-Guide component; 8-Fifth sensor; 9-Controller; 100-Membrane material; a-Length direction;b - Height direction; c - Width direction. Detailed Implementation

[0027] This application provides a baking apparatus and a printing system. To make the objectives, technical solutions, and effects of this application clearer and more explicit, the following detailed description is provided with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0028] In the description of this application, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this application. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] Figure 1 is a schematic diagram of the printing system 001 provided in this application.

[0031] As shown in Figure 1, this application provides a printing system 001, which includes a printer 02 and a baking device 01. The printer 02 may include a printhead. For example, the printhead may be an inkjet printhead, and the printer may be an inkjet printer. The printer 02 is used to print patterns onto a film material 100. The baking device 01 may be located on the discharge side of the printer and is capable of receiving the film material 100 after the printer 02 has printed the pattern. It is used to dry the pattern on the film material 100 after the printer 02 has printed the pattern, and to sprinkle hot melt adhesive powder onto the film material 100 and melt the hot melt adhesive powder on the film material 100, so that the pattern on the film material 100 can be transferred to other objects (such as clothing, hats, etc.). The printing system 001 may be a DTF printing system, etc., and is not specifically limited here.

[0032] Generally, the film material 100 can be made of PET film. In one embodiment, the thickness of the film material 100 can be 0.75 mm. The film material 100 with the above-mentioned material and thickness has good transferability and can improve the clarity of the pattern transferred onto the product.

[0033] Figure 2 is a structural schematic diagram of the baking equipment provided in this application from a first-view perspective.

[0034] As shown in Figures 1 and 2, the baking equipment 01 includes a housing 1. A feed port 11 is formed on the housing 1 to allow the film material 100 to pass through. The film material 100 after printing the pattern can enter the baking equipment 01 through the feed port 11 for operations such as powdering and baking.

[0035] Figure 3 is a cross-sectional view of Figure 2 along the AA direction.

[0036] As shown in Figure 3, in some embodiments, the housing 1 may include a frame 13 and side panels 14 fixed to the frame 13. The frame 13 forms a frame structure. The side panels 14 surround the outside of the frame 13, and the feed port 11 may be formed on the side panel 14 facing the printer side of the housing 1.

[0037] As shown in Figures 2 and 3, a receiving cavity is formed inside the outer shell 1. The baking equipment 01 also includes a buffer assembly 2, a powder-sprinkling assembly 3, a conveying assembly 4, and a baking assembly 5. The buffer assembly 2, the powder-sprinkling assembly 3, the conveying assembly 4, and the baking assembly 5 are respectively installed in the receiving cavity to improve the overall integrity of the baking equipment 01.

[0038] The outer casing 1 has an inlet 11 through which the membrane material 100 enters the outer casing 1. A buffer assembly 2 is disposed between the inlet 11 and the conveying assembly 4 to guide the membrane material 100 entering from the inlet 11 to the conveying assembly 4. The buffer assembly 2 can buffer the membrane material 100 during the conveying process and slow down the conveying speed of the membrane material 100.

[0039] The powder-spreading component 3 is located between the feed inlet 11 and the conveying component 4. The buffer component 2 is inserted into the powder-spreading component 3. The powder-spreading component 3 is used to collect hot melt adhesive powder and to spread the hot melt adhesive powder onto the membrane material 100. When the membrane material 100 is buffered in the buffer component 2, the powder-spreading component 3 can spread hot melt adhesive powder from the top of the membrane material 100 onto the membrane material 100 and recover excess hot melt adhesive powder.

[0040] The conveying assembly 4 is used to convey the membrane material 100, and the baking assembly 5 is located in the conveying path of the membrane material 100 to bake the membrane material 100 so that the hot melt adhesive powder melts onto the membrane material 100.

[0041] The above structure enables automated operation of film material 100 feeding, powdering, conveying and baking, improving the baking efficiency of film material 100 and enhancing the user experience.

[0042] In this application, the conveying path of the membrane material 100 refers to the path along which the membrane material 100 moves inside the housing 1 after entering through the inlet 11. The conveying direction of the membrane material 100 refers to the direction in which the membrane material 100 moves inside the housing 1 after entering through the inlet 11.

[0043] As shown in Figures 1 and 2, in some embodiments, the baking device 01 has a length direction a, a height direction b, and a width direction c. The feed inlet 11 is located on one side of the outer casing 1 in the width direction c of the baking device 01. The powder-sprinkling component 3 extends along the height direction b and the length direction a of the baking device 01. The buffer component 2 extends along the length direction a of the baking device 01. The baking component 5 is located on one side of the powder-sprinkling component 3 in the width direction c of the baking device 01, and is located on the same side of the width direction c of the baking device 01 as the feed inlet 11.

[0044] The positions of the various components of the baking equipment 01 are arranged in a reasonable manner, improving the compactness of the structure and reducing the volume of the baking equipment 01 without affecting its performance. By placing the baking component 5 on one side of the powder-spreading component 3 in the width direction c, the other side of the powder-spreading component 3 in the width direction c of the baking equipment 01 has space suitable for the extension of the conveying component 4. The baking component 5 is distributed on the same side of the baking equipment 01 as the feeding port 11 in the width direction c. Since the feeding end of the feeding port 11 faces the externally connected equipment, the baking component 5 is located on the side closer to the external equipment during use, avoiding the heat generated by the baking component 5 during equipment operation that may cause discomfort to the operator and improving the user experience.

[0045] In some embodiments, the outer region of the upper part of the outer casing 1 forms an installation space 15 for mounting external devices. Inside the outer casing 1, a first receiving cavity 16 is formed parallel to the installation space 15 in the width direction c of the baking equipment 01, and a second receiving cavity 17 is formed below the first receiving cavity 16 and the installation space 15 in the height direction b of the baking equipment 01. The feed inlet 11 connects the first receiving cavity 16 and the installation space 15. A buffer assembly 2 is disposed in the first receiving cavity 16, a portion of the powder-spreading assembly 3 is disposed in the first receiving cavity 16, and another portion is disposed in the second receiving cavity 17. The baking assembly 5 is disposed in the second receiving cavity 17 and located below the installation space 15. Thus, external devices (such as printers) can be directly mounted on the installation space 15, saving installation area, shortening the transmission distance of the film material 100 from the external device to the baking equipment 01, and improving printing efficiency. The first receiving cavity 16 is arranged side by side with the installation space 15. The buffer assembly 2 is located in the first receiving cavity 16, so that the film material 100 entering the baking equipment 01 from the external equipment through the feed port 11 can be directly conveyed into the buffer assembly 2. The powder-sprinkling assembly 3 is partly located in the first receiving cavity 16 and partly located in the second receiving cavity 17, making full use of the space in the height direction and avoiding occupying a large space in the width direction. The baking assembly 5 is located in the second receiving cavity 17 and below the installation space 15, which further makes full use of the space in the height and width directions, making the baking equipment structure more compact, smaller in size, and easier for users to operate.

[0046] Figure 4 is a schematic diagram of the internal structure of the baking equipment provided in this application from a first-person perspective.

[0047] As shown in Figures 3 and 4, the baking equipment 01 also includes a receiving assembly 7, which is located at the bottom of the outer casing 1. The receiving assembly 7 includes a receiving bin 71, which is used to store the dried film material 100. The receiving bin 71 enables automatic storage of the dried film material 100, thereby achieving integrated automatic operation of the drying equipment. The receiving bin 71 is provided with a receiving chamber 711 and a receiving port 712, and the receiving port 712 connects the receiving chamber 711 with the second receiving chamber 17.

[0048] The receiving port 712 is opposite to the conveying component 4 located at the bottom of the baking component 5, so that the film material 100 on the conveying component 4 enters the receiving chamber 711 through the receiving port 712. The receiving component 7 provides storage space for the baked film material 100, thereby timely collecting the baked film material 100, reducing unnecessary waiting time and improving the user experience. The receiving component 7 is located on the other side of the powdering component 3 in the width direction c of the baking equipment 01, which can effectively utilize the space of the second receiving chamber 17 and optimize the internal layout of the equipment; and the receiving component 7 and the baking component 5 are located on different sides in the width direction c of the baking equipment 01, so that the operator does not need to get close to the baking component 5 when taking out the film material 100 from the receiving component 7, avoiding burns.

[0049] The receiving bin 71 is detachably mounted on the housing 1 for easy removal. The receiving assembly 7 also includes a guide 72, which is located at the end of the receiving bin 71 near the receiving port 712 to guide the film material 100 detached from the conveying assembly 4 into the receiving chamber 711. By providing the guide 72, the baked film material 100 can be prevented from accumulating in the receiving bin 71 near the receiving port 712. For example, the guide 72 can be a component with a slope or curved surface (such as a ramp), or a fan. In this embodiment, the guide 72 is configured as a fan, with the fan outlet facing the receiving port 712. Multiple fans can be provided, arranged at the location where the film material 100 detaches from the conveying assembly 4, and spaced apart along the width direction of the film material 100, so that the film material 100 can be subjected to a more uniform pushing force in the width direction, thereby being more neatly collected in the receiving bin 71.

[0050] The receiving assembly 7 may include a fifth sensor (not shown in the figure). The fifth sensor may be located inside the receiving hopper 71 or on the surface of the outer casing 1 opposite to the receiving hopper 71. The fifth sensor is used to detect the amount of film material 100 stored in the receiving hopper 71. When the amount of film material 100 stored in the receiving hopper 71 reaches a certain level, the fifth sensor can issue an alarm signal to remind the operator to remove the film material 100 from the receiving hopper 71. In some examples, the fifth sensor may be a photoelectric sensor, etc.

[0051] As shown in Figure 4, the baking equipment 01 also includes a controller 9, which can be housed within the housing 1. In some examples, the controller 9 can be a PLC controller. The controller 9 is electrically connected to the buffer assembly 2, the powder-spreading assembly 3, the conveying assembly 4, and the baking assembly 5, respectively, to achieve centralized and unified control of the entire machine, thereby improving the accuracy of the automated control of the baking equipment 01. The controller 9 may include a main board and electronic components and interfaces mounted on the main board, which can be fixed to the frame 11 or the side plate 14. In some examples, the controller 9 can be housed within the second receiving cavity 17, located on one side of the powder-spreading assembly 3 along the length direction a of the baking equipment 01, thus resulting in a more compact structural layout and full utilization of the space in the second receiving cavity 17.

[0052] Figure 5 is a schematic diagram of the internal structure of the baking equipment provided in this application from a second perspective. Figure 6 is a schematic diagram of the structure of the powder-sprinkling component and the buffer component provided in this application. Figure 7 is a schematic diagram of the structure of the buffer component provided in this application.

[0053] As shown in Figure 5, the buffer assembly 2 includes a bracket 24, which is fixed inside the outer shell 1.

[0054] As shown in Figures 6 and 7, the bracket 24 includes two mounting plates 241, which are arranged at intervals relative to each other along the length direction a of the baking equipment 01, and are located on both sides of the conveying direction of the film material 100.

[0055] The buffer assembly 2 includes a swing member 21, which is swingably mounted on the bracket 24, specifically on at least one mounting plate 241.

[0056] In some embodiments, the oscillating member 21 may be a grid-shaped plate structure. The oscillating member 21 has powder leakage holes 213. By providing powder leakage holes 213, the friction between the oscillating member 21 and the membrane material 100 can be reduced; and excess hot melt adhesive powder sprinkled downward by the powder dispensing component 3 or hot melt adhesive powder shaken off from the membrane material 100 can fall through the powder leakage holes 213, thereby realizing the recycling of hot melt adhesive powder.

[0057] The oscillating member 21 is disposed opposite to the feed inlet 11. After the film material 100 enters the baking equipment 01 through the feed inlet 11, it will be conveyed to the oscillating member 21. The oscillating member 21 is disposed on the support 24 and can oscillate relative to the support 24. The oscillating member 21 has a first position and a second position, and the oscillating member 21 can oscillate within the range between the first position and the second position.

[0058] In some examples, the oscillating member 21 has a feeding surface 211 with a varying tilt angle. When the oscillating member 21 is in a first position, its two ends corresponding to the feeding surface 211 are close to the feed inlet 11 and the conveying assembly 4, respectively. When the oscillating member 21 is in a second position, the feeding surface 211 is relatively far from the feed inlet 11, and there is a certain distance between the feeding surface 211 and the feed inlet 11. The first position can be the maximum height that the oscillating member 21 can reach when it swings upwards, and the second position can be the zero point of the oscillation of the oscillating member 21, i.e., the initial position of the oscillating member 21. In other embodiments, the vertical swing amplitude of the oscillating member 21 can exceed the range defined between the first and second positions.

[0059] In the initial state, the swing member 21 is in the second position. When the membrane material 100 enters the buffer assembly 2 from the feed port 11, the swing member 21 swings upward to the first position. Both ends of the swing member 21 can approach the feed port 11 and the conveying assembly 4 respectively, allowing the membrane material 100 to pass through the feeding surface 211 of the swing member 21 and be conveyed to the conveying assembly 4. The membrane material 100 conveyed to the conveying assembly 4 can be fixed to the transmission assembly 4. After the membrane material 100 is fixed to the conveying assembly 4, the swing member 21 can swing downward to the second position. The conveying assembly 4 does not tension the membrane material 100; under the influence of gravity, the membrane material 100 will be pressed down to form an arc shape.

[0060] As shown in Figure 7, the feeding surface 211 includes a first conveying sub-surface 2112 and a second conveying sub-surface 2111 connected together. Both the first conveying sub-surface 2112 and the second conveying sub-surface 2111 are curved surfaces. The first conveying sub-surface 2112 is closer to the feed inlet 11 than the second conveying sub-surface 2111. In the width direction of the swing member 21, the tangent angle of the first conveying sub-surface 2112 gradually increases, while the tangent angle of the second conveying sub-surface 2111 gradually decreases. The first and second sub-transmission surfaces 2112 are connected to form a changing inclination angle, which to some extent allows the membrane material 100 to pass more smoothly through the buffer assembly 2 and reach the conveying assembly 4.

[0061] The buffer assembly 2 includes a second motor 22. The second motor 22 is mounted on the bracket 24 and is connected to the swing member 21 for driving the swing member 21 to swing.

[0062] As shown in Figures 3 and 6, the oscillating member 21 is disposed between two mounting plates 241 and can rotate relative to the mounting plates 241 to achieve oscillation. The mounting plates 241 are provided with connecting holes, and one end of the oscillating member 21 is rotatably connected to the connecting hole on one of the mounting plates 241 via a shaft. The output shaft of the second motor 22 passes through the connecting hole on the other mounting plate 241 and is connected to the other end of the oscillating member 21 for transmission, thereby realizing the rotation of the oscillating member 21. Furthermore, the second motor 22 is connected to one end of the oscillating member 21 along the conveying direction of the membrane material 100, enabling the oscillating member 21 to achieve a larger oscillation amplitude.

[0063] As shown in Figures 3 and 6, the buffer assembly 2 includes a first sensor 27, which is located behind the swing member 21 along the conveying direction. The first sensor 27 is used to detect whether the film material has reached the conveying assembly 4. When the first sensor 27 detects that the film material 100 is connected from the buffer assembly 2 to the conveying assembly 4, the first sensor 27 can transmit a control signal to the controller 9. The controller 9 controls the second motor 22 according to the control signal, so that the second motor 22 controls the swing member 21 to swing downward to the second position, so that the film material 100 is buffered on the buffer assembly 2 and forms a downward curved arc, preventing the film material 100 from piling up, thereby allowing the powder-spraying assembly 3 to evenly spray powder onto the film material 100.

[0064] The buffer assembly 2 includes a second sensor 23. The sensing area of ​​the second sensor 23 faces the swing member 21, and the second sensor 23 is used to detect the position of the swing member 21, thereby determining whether the swing member 21 has swung to the first position. In this embodiment, the second sensor 23 can be set on the side of the buffer assembly 2 facing the feed inlet 11, and the second sensor 23 can be set close to the first position.

[0065] When the swing member 21 swings to the first position, the second sensor 23 can generate an excitation signal. The controller 9 can control the second motor 22 to stop rotating according to the excitation signal. The membrane material 100 passes through the feeding surface 211 of the swing member 21 and enters the conveying assembly 4. At this time, the feeding surface 211 of the swing member 21 can contact the passing membrane material 100 and support the membrane material 100, so that the membrane material 100 can smoothly enter the conveying assembly 4.

[0066] As shown in Figure 6, the buffer assembly 2 also includes a third sensor 26. The third sensor 26 is located below the first position and is used to detect whether the membrane material 100 sags to the lower limit position when the swing member 21 is in the second position, thereby controlling the conveying speed of the membrane material 100 in the conveying assembly 4. The third sensor 26 may be located on the outer casing 1.

[0067] In the above process, when the film material 100 is fixed to the conveying assembly 4, the second motor 22 rotates in the opposite direction, controlling the swinging component 21 to swing downwards. The conveying assembly 4 stops conveying the film material 100. Under the pushing action of the printer, the film material 100 droops in the buffer assembly 2 and forms a downward curved arc. When the film material 100 bends to a certain extent, the lower limit position of the film material 100 triggers the signal of the third sensor 26, and the conveying assembly 4 starts to convey the film material 100 downstream. When the lower limit position of the film material 100 leaves the sensing range of the third sensor 26, the conveying assembly 4 stops working, and the film material 100 forms a downward curved arc again in the buffer assembly 2. This cycle repeats, realizing the automatic feeding of the film material 100.

[0068] In some embodiments, the first sensor 27, the second sensor 23, and the third sensor 26 may be sensors of the type such as photoelectric sensors. The first sensor 27, the second sensor 23, and the third sensor 26 are each electrically connected to the controller 9.

[0069] In some embodiments, as shown in FIG5, at least one mounting plate 241 is provided with a limiting member 25. The limiting member 25 is disposed on the side of the mounting plate 241 facing the swing member 21, and protrudes from the surface of the mounting plate 241. The limiting member 25 can be used to limit the swing range of the swing member 21. When the swing member 21 swings upward to the first position, the limiting member 25 can abut against the swing member 21 to limit the swing member 21 from continuing to swing upward, ensuring that the swing member 21 swings upward to the correct position, so that the membrane material 100 can be smoothly connected to the conveying assembly 4.

[0070] As shown in Figures 3 and 5, in some embodiments, the conveying component 4 is disposed downstream of the buffer component 2. The conveying component 4 is used to convey the film material 100 from the buffer component 2 to the baking component 5. The conveying component 4 can also convey the film material 100 so that the film material 100 can move relative to the baking component 5.

[0071] By moving the conveying component 4, the film material 100 can be driven downstream to the component, thus eliminating the need for conveying rollers in the baking equipment 01 to convey the film material 100. The conveying component 4 can convey short sheets of film material 100, improving the flexibility of the baking equipment 01 and avoiding waste of film material 100.

[0072] Figure 8 is a schematic diagram of the transmission component provided in this application from a first perspective. Figure 9 is a schematic diagram of the transmission component provided in this application from a second perspective.

[0073] As shown in Figures 3 and 5, the conveying assembly 4 includes a first conveying sub-assembly 41, a second conveying sub-assembly 42, a transmission sub-assembly 43, and a first motor 44. The first motor 44 is drive-connected to the transmission sub-assembly 43, and the transmission sub-assembly 43 is drive-connected to the first conveying sub-assembly 41 and the second conveying sub-assembly 42. A portion of the first conveying sub-assembly 41 is located on the side of the powder-spreading assembly 3 opposite to the feed inlet 11, and a portion of the first conveying sub-assembly 41 is located below the powder-spreading assembly 3. The second conveying sub-assembly 42 at least surrounds a portion of the baking assembly 5. During the conveying process of the conveying assembly 4, the film material 100 can be transferred from the first conveying sub-assembly 41 to the second conveying sub-assembly 42.

[0074] By connecting the first transmission subassembly 41 and the second transmission subassembly 42 via the transmission subassembly 43, the first motor 44 can be eliminated, thereby simplifying the structure of the equipment. Furthermore, the transmission subassembly 43's connection to the first transmission subassembly 41 and the second transmission subassembly 42 improves the accuracy of the synchronous transmission between them, thus enhancing the stability of the membrane material 100 transmission.

[0075] The first conveying sub-assembly 41 can convey the film material 100 to the front of the baking assembly 5, and the second conveying sub-assembly 42 can convey the film material 100 around the baking assembly 5, so as to make full use of the baking area of ​​the baking assembly 5 and achieve more thorough baking of the film material 100. At the same time, by rationally arranging the position of the first conveying sub-assembly 41, space is fully utilized and the volume of the baking equipment 01 is reduced.

[0076] Referring to Figures 8 and 9, in some embodiments, the first transmission sub-assembly 41 includes two first transmission modules 411 and a first transmission member 412. The two first transmission modules 411 are spaced apart along the length direction a, and the first transmission member 412 is driveably connected to the two first transmission modules 411. The first transmission member 412 can realize synchronous transmission of the two first transmission modules 411, and the two first transmission modules 411 can support both ends of the membrane material 100.

[0077] For example, the first conveying module 411 includes a synchronous belt and multiple drive pulleys. In the first conveying module 411, the synchronous belt can mesh with the multiple drive pulleys, and the lines connecting the multiple drive pulleys can form a polygon. The multiple drive pulleys can support the synchronous belt and drive its movement. A first transmission member 412 can extend along the length direction a of the baking equipment 01. The first transmission member 412 can be a drive shaft. One end of the first transmission member 412 is fixed to a drive pulley of one of the first conveying modules 411, and the other end of the first transmission member 412 is fixed to a drive pulley of another first conveying module 411. Any drive pulley in one of the first conveying modules 411 can be connected to a transmission sub-assembly 43. In some embodiments, the second conveying sub-assembly 42 includes two second conveying modules 421 and a second transmission member 422. The two second conveying modules 421 are spaced apart along the length direction a of the baking equipment 01. The second transmission member 422 is driveably connected to the two second conveying modules 421. The second transmission component 422 can realize the synchronous transmission of the two second transmission modules 421, and the two second transmission modules 421 can support both ends of the membrane material 100.

[0078] For example, the second conveying module 421 includes a synchronous belt and multiple drive pulleys. In the second conveying module 421, the synchronous belt can mesh with the multiple drive pulleys, and the lines connecting the multiple drive pulleys can form a polygon. The multiple drive pulleys can support the synchronous belt and drive its movement. The second transmission member 422 can extend along the length direction a of the baking equipment 01. The second transmission member 422 can be a drive shaft. One end of the second transmission member 422 is fixed to a drive pulley of one of the second conveying modules 421, and the other end of the second transmission member 422 is fixed to a drive pulley of another second conveying module 421. Any drive pulley in one of the second conveying modules 421 can be connected to a transmission sub-assembly 43 and move under the transmission of the transmission sub-assembly 43.

[0079] As shown in Figure 5, in some embodiments, the first conveying sub-assembly 41 further includes a first limiting member 413, which is disposed on the outside of the first conveying module 411. The first limiting member 413 is used to prevent the membrane material 100 from detaching from the first conveying module 411. For example, the first limiting member 413 may be a guide rail, which may at least cover a portion of the first conveying module 411.

[0080] The second transmission sub-assembly 42 further includes a second limiting member 423, which is disposed on the outside of the second transmission module 421. The second limiting member 423 is used to prevent the membrane material 100 from detaching from the second transmission module 421. For example, the second limiting member 423 may be a guide rail, which may at least cover a portion of the second transmission module 421.

[0081] A first gap is formed between the first limiting member 413 and the first conveying module 411. The width of the first gap is adapted to the thickness of the film material 100, allowing the film material 100 to move within the first gap and ensuring that the film material 100 does not detach from the first conveying module 411. A second gap is formed between the second limiting member 423 and the second conveying module 421. The width of the second gap is adapted to the thickness of the film material 100, ensuring that the film material 100 does not detach from the second conveying module 421.

[0082] Please refer to Figure 10. The transfer assembly 4 also includes a guide 45 disposed between the first transfer subassembly 41 and the second transfer subassembly 42. The guide 45 is used to guide the membrane material 100 from the first transfer subassembly 41 to the second transfer subassembly 42 to realize the transfer of the membrane material 100.

[0083] The first conveyor assembly 41 and the second conveyor assembly 42 are close to each other on the side of the baking assembly 5 facing the powdering assembly 3, and the guide member 45 is formed in the area where the first conveyor assembly 41 and the second conveyor assembly 42 are close to each other.

[0084] The guide member 45 includes a second guide member 452. The second guide member 452 is disposed on the side of the second limiting member 423 near the first transfer sub-assembly 41. The second guide member 452 has an inclined surface facing the first transfer sub-assembly 42, which can guide the film material 100 from the first transmission module 411 to the second transmission module 421. The second limiting member 423 may abut against or approach the first transfer module 411, and the second guide member 452 is disposed on the portion of the second limiting member 423 that abuts against or is opposite to the first transfer module 411.

[0085] The first conveying module 411 and the second conveying module 421 rotate in opposite directions. For example, the first conveying module 411 rotates clockwise to convey the membrane material 100 to a position close to the second conveying module 421, and the second conveying module 421 rotates counterclockwise. Thus, under the rotation of the first conveying module 411 and the second conveying module 421, and under the action of the second guide member 452, the membrane material 100 can be transferred from the first conveying module 411 to the second conveying module 421 when the first conveying module 411 and the second conveying module 421 are close to each other.

[0086] In some embodiments, the guide member 45 further includes a first guide member 451, which is located on the side of the first limiting member 413 near the second transmission sub-assembly 42, and the first guide member 451 is offset from the second guide member 452. The first guide member 451 has an inclined surface extending toward the second transmission sub-assembly 42, and the inclined surface of the first guide member 451 can guide the membrane material 100 to gradually detach from the first transmission member 412.

[0087] The conveying component 4 includes a segmented first conveying sub-component 41 and a second conveying sub-component 42, which can optimize the conveying direction of the conveying component 4 in a limited space, reduce the frequency of changes in the transmission angle of a single-segment transmission component, improve the stability of the membrane material 100 conveying, facilitate the layout of each component position, and improve the compactness of the overall structure, thereby reducing the overall size of the machine.

[0088] In some embodiments, as shown in Figures 9 and 11, a third guide 4131 is also provided at one end of the first limiting member 413 near the buffer assembly 2. The end of the third guide 4131 can be bent upward to guide the membrane material 100 entering the conveying assembly 4, so that the membrane material 100 entering the third guide 4131 can gradually approach the first transmission member 412, thereby connecting the membrane material 100 to the conveying assembly 4 and moving with the conveying assembly 4. The third guide 4131 has a guide curved surface or a guide inclined surface. When the third guide 4131 is a guide curved surface, the tangent angle of the guide curved surface can be set to gradually decrease.

[0089] In some embodiments, the first sensor 43 may be positioned close to the third guide member 4131. The first sensor 43 is used to detect whether the film material 100 enters the conveying assembly 4 from the buffer assembly 2. When the first sensor 43 detects that the film material 100 is connected from the buffer assembly 2 to the conveying assembly 4, the second motor 22 controls the swing member 21 to swing downward to a second position, so that the film material 100 forms a downward curved arc, thereby facilitating the powder-spraying assembly 3 to spray powder onto the film material 100.

[0090] As shown in Figures 5 and 8, in some embodiments, the transmission sub-assembly 43 further includes a first gear 431, a second gear 432, and a third gear 433. The first gear 431 is disposed between the second gear 432 and the third gear 433, meshing with both gears. The first gear 431 is also connected to one of the first transmission modules 411 in the first transmission sub-assembly 41, thereby driving the two first transmission modules 411 to rotate synchronously. The rotation direction of the first gear 431 is the same as the rotation direction of the first transmission module 411, causing the first transmission module 411 to gradually move the membrane material 100 closer to the second transmission sub-assembly 42. The second gear 432 is connected to one of the second transmission modules 421 in the second transmission sub-assembly 42, thereby driving the two second transmission modules 421 to rotate synchronously. The third gear 433 is connected to the first motor 42.

[0091] In the above, the transmission accuracy is improved by using the transmission sub-assembly 43; at the same time, it eliminates the need to set up multiple motors to drive the first transmission sub-assembly 41 and the second transmission sub-assembly 42 respectively, thus simplifying the structure.

[0092] Figure 10 is an enlarged view of region C in Figure 9.

[0093] In some embodiments, the conveying assembly 4 is provided with a first mating part 46, which is used to mate with a second mating part on the membrane material 100 to fix the membrane material 100 to the conveying assembly 4.

[0094] In some embodiments, each of the two first conveying modules 411 is provided with a first mating part 46, and a second mating part is disposed on both sides of the membrane material 100 in the width direction. The first mating part 46 can mate with the second mating part. Thus, through the connection between the first mating part 46 and the second mating part, the membrane material 100 can be fixed on the conveying assembly 4. Each of the two second conveying modules 421 is provided with a first mating part 46 to fix the membrane material 100 on the second conveying module 421.

[0095] As shown in Figures 9 and 10, in some embodiments, the first conveying module 411 is provided with a plurality of first mating parts 46, which are equally spaced. Each first mating part 46 is a boss, and each second mating part is a fixing hole. Multiple second mating parts are provided and equally spaced, with the distance between two adjacent second mating parts being the same as the distance between two adjacent first mating parts 46. The first mating parts 46 pass through the second mating parts to fix the membrane material 100 onto the conveying assembly 4.

[0096] Multiple protrusions are provided, and these protrusions are spaced apart along the conveying direction of the membrane material 100. A single membrane material 100 can be fixed on multiple protrusions to improve the fit between the membrane material 100 and the conveying assembly 4. Multiple first mating parts 46 are provided at equal intervals, so that the membrane material 100 does not need to be fixed to a specific position on the first conveying module 411. Multiple first mating parts 46 can also be provided at equal intervals on the second conveying module 421.

[0097] To facilitate the fitting of the membrane material 100 onto the boss, the diameter of the boss's cross-section can be set to gradually decrease from the fixed end to the free end of the boss. For example, the boss can be configured as a conical structure.

[0098] The fixing holes on the membrane material 100 can be configured as oblong holes, which further facilitates the fixing of the membrane material 100 to the boss. In other embodiments, the fixing holes can also be round holes.

[0099] As shown in Figures 5 and 8, in some embodiments, the transmission component 4 includes a code disk 47 and a sixth sensor 48. The periphery of the code disk 47 is provided with a plurality of teeth arranged at intervals along its circumference, the distance between two adjacent teeth being equal to or proportional to the distance between two adjacent bosses. The rotation trajectory of the code disk 47 is within the detection range of the sixth sensor 48, which is used to detect the rotation distance of the code disk 47.

[0100] The code disk 47 is connected to the first transmission sub-assembly 41 and the second transmission sub-assembly 42 via the transmission sub-assembly 43. Specifically, the code disk 47 is coaxially arranged with the first gear 431, and the first gear 431, the second gear 432 and the third gear 433 have the same rotation radius. The sixth sensor 48 is disposed on one side of the code disk 47 and is used to detect the rotation distance of the code disk 47.

[0101] When the teeth on the code disk 47 pass the sixth sensor 48, the sixth sensor 48 generates an excitation signal. Multiple teeth on the code disk 47 can correspond to multiple first mating parts. In some examples, the sixth sensor can also be used to detect the position of the teeth on the code disk 47; when the sixth sensor detects a tooth, it considers the membrane material 100 to have reached the engagement position. Specifically, by detecting the position of the teeth on the code disk 47 by the sixth sensor 48, it is determined whether the first mating part 46 has moved to the engagement position, thereby controlling the transmission of the membrane material 100 and engaging the second mating part on the membrane material 100 with the first mating part 46 to accurately fix it to the first transmission sub-assembly 41.

[0102] Figure 11 is an enlarged view of region B in Figure 3.

[0103] As shown in Figures 3 and 11, the powder-spreading assembly 3 includes a powder-spreading mechanism 31. The powder-spreading mechanism 31 is positioned above the buffer assembly 2 and is used to spread hot melt adhesive powder onto the film material 100 located on the buffer assembly 2. When the swing member 21 swings downward to the second position, the film material 100 can form a downward-curving arc. At this time, the powder-spreading mechanism 31 spreads hot melt adhesive powder onto the film material 100, allowing the hot melt adhesive powder to be more evenly distributed on the surface of the film material 100, thus better covering the pattern on the film material 100.

[0104] Figure 12 is a schematic diagram of the powder-spreading mechanism provided in this application.

[0105] As shown in Figures 3, 11, and 12, the powder-spreading mechanism 31 further includes a powder-spreading bin 311, a powder-spreading roller 313, and a third motor 314. The powder-spreading bin 311 is positioned above the buffer assembly 2, and both ends of the powder-spreading bin 311 are fixed to the bracket 24. The powder-spreading roller 313 is disposed within the powder-spreading bin 311 and extends along the length of the powder-spreading bin 311. One end of the powder-spreading roller 313 is rotatably connected to one of the mounting plates 241, and the output shaft of the third motor 314 passes through another mounting plate 241 and is drively connected to the other end of the powder-spreading roller 313. The third motor 314 is used to drive the powder-spreading roller 313 to rotate, thereby driving the powder-spreading bin 311 to spread hot melt adhesive powder downwards onto the film material 100.

[0106] The powder dispensing bin 311 stores the hot melt adhesive powder transferred from the powder storage mechanism 32 by the powder circulation mechanism 33. The cross-section of the powder dispensing bin 311 is approximately V-shaped, allowing the hot melt adhesive powder to slide more effectively to the bottom of the bin. A powder dispensing nozzle is provided at the bottom of the powder dispensing bin 311 for discharging the hot melt adhesive powder. The nozzle extends along the length of the powder dispensing bin 311. It is understood that the length of the nozzle is not less than the width of the film material 100 to ensure that the hot melt adhesive powder can cover all positions along the width of the film material 100.

[0107] Multiple reinforcing ribs 3111 are spaced apart inside the powder spreading chamber 311. The two ends of the reinforcing ribs 3111 are connected to the two side walls along the length of the powder spreading chamber 311.

[0108] In some embodiments, the powder dispensing mechanism 31 is linked to the printer 02. After the film 100 reaches a specific position, the third motor 314 operates for a set time to ensure that the powder dispensing mechanism 31 can dispense a sufficient amount of hot melt adhesive powder; after the set time, the third motor 314 stops operating. This setting allows for precise control of the amount of hot melt adhesive powder on the film 100. Furthermore, the amount of powder dispensed can be adjusted through printing parameters; for example, increasing the amount of powder dispensed increases the number of passes or the size of the image.

[0109] Figure 13 is a schematic diagram of the powder-spreading roller provided in this application.

[0110] As shown in Figures 12 and 13, the third motor 314 is connected to the powder-spreading roller 313 for driving the roller to rotate, thereby dispensing the hot melt adhesive powder from the powder-spreading chamber 311 through the powder-spreading nozzle and spreading it downwards onto the film material 100. The surface of the powder-spreading roller 313 is provided with at least one powder groove 3131, which can be used to hold the hot melt adhesive powder. The powder groove 3131 extends along the axial direction of the roller. When the roller rotates, the powder groove 3131 can carry out the hot melt adhesive powder from the powder-spreading chamber 311, dispensing the powder through the powder-spreading nozzle and improving the uniformity of the hot melt adhesive powder distribution on the film material 100.

[0111] As shown in Figure 13, in some embodiments, multiple powder grooves 3131 are provided on the circumferential surface of the powder-spreading roller 313. The multiple powder grooves 3131 are evenly spaced along the circumference of the powder-spreading roller 313 to improve the powder-spreading efficiency.

[0112] As shown in Figures 11 and 12, in some embodiments, the powder dispensing mechanism 31 further includes a powder scraper 315. The powder scraper 315 is disposed in the area of ​​the powder dispensing chamber 311 near the powder dispensing nozzle. The powder scraper 315 contacts the powder dispensing roller 313 so that when the powder dispensing roller 313 rotates, it scrapes off the hot melt adhesive powder in the powder trough 3131 so that it can be dispensed from the powder dispensing nozzle.

[0113] In some embodiments, two powder scrapers 315 are configured, with the two powder scrapers 315 respectively disposed at both ends of the powder dispensing nozzle, and the two powder scrapers 315 facing opposite directions and located on both sides of the powder dispensing roller 313 along its axial direction. Both powder scrapers 315 abut against the powder dispensing roller 313.

[0114] Two powder scrapers 315 are located on both sides of the powder spreading roller 313 along its axis, and the distance between the two powder scrapers 315 is no greater than the width of the powder spreading roller 313. When the powder spreading roller 313 rotates, the two powder scrapers 315 can sweep the hot melt adhesive powder on the powder trough 3131, so that the hot melt adhesive powder can fall onto the film material 100.

[0115] Two powder scrapers 315 are inclined, with the inclination direction of the scrapers 315 opposite to the rotation direction of the powder-spreading roller 313. This arrangement allows the two scrapers 315 to insert into the powder trough 3131 when the powder-spreading roller 313 rotates, and to effectively carry out the hot melt adhesive powder from the powder trough 3131 in the opposite direction of the rotation of the powder-spreading roller 313. For example, when the powder-spreading roller 313 rotates counterclockwise, one scraper 315 is located in front of the powder-spreading roller 313 and is inclined downwards; the other scraper 316 is located behind the powder-spreading roller 313 and is inclined upwards.

[0116] The powder scraper 315 is a brush, which includes a soft part that contacts the powder-spreading roller 313. This soft part can deform as the powder-spreading roller 313 rotates, thereby scraping off the hot melt adhesive powder in the powder trough 3131. In other embodiments, the powder scraper 315 can also be a component made of a soft material, such as a silicone strip.

[0117] Figure 14 is a schematic diagram of the powder-spraying component provided in this application.

[0118] As shown in Figures 3, 6, and 14, the powder dispensing assembly 3 includes a powder storage mechanism 32. The powder storage mechanism 32 is located below the buffer assembly 2 and is used to store and recycle hot melt adhesive powder.

[0119] The powder storage mechanism 32 has a powder recovery chamber 321a1 and a powder storage chamber 321b1 that are connected. The powder recovery chamber 321a1 is closer to the buffer assembly 2 than the powder storage chamber 321b1. The buffer assembly 2 is at least partially located in the powder recovery chamber 321a1 and can swing within the powder recovery chamber 321a1.

[0120] Figure 17 is a structural schematic diagram of the powder-spreading component provided in this application from a second perspective. Figure 18 is a cross-sectional view of Figure 17 along the EE direction.

[0121] Referring to Figures 3 and 18, the powder dispensing mechanism 31 is positioned above the powder recovery chamber 321a1. The buffer assembly 2 is at least partially located within the powder recovery chamber 321a1 and can oscillate within it, allowing excess powder to enter the powder recovery chamber 321a1 when the powder dispensing mechanism 31 applies hot melt adhesive powder to the film material 100. The powder recovery chamber 321a1 is connected to the powder storage chamber 321b1, allowing the hot melt adhesive powder collected in the powder recovery chamber 321a1 to fall directly into the powder storage chamber 321b1, eliminating the need for frequent cleaning and improving the user experience.

[0122] The powder storage mechanism 32 includes a powder storage bin 321 for storing hot melt adhesive powder. A powder recovery chamber 321a1 and a powder storage chamber 321b1 are formed within the powder storage bin 321. The powder storage bin 321 has an upward-facing powder recovery port 3215, which connects the powder recovery chamber 321a1 and the first receiving chamber 16. Excess hot melt adhesive powder on the film material 100 or hot melt adhesive powder falling from the powder dispensing mechanism 31 can be recovered from the powder recovery port 3215 into the powder storage bin 321, facilitating the recycling of the hot melt adhesive powder.

[0123] The upper part of the powder storage bin 321 is V-shaped, that is, the upper cross section of the powder storage bin 321 gradually increases from bottom to top. This not only ensures that the powder recovery port 3215 is large enough to receive the hot melt adhesive powder falling from the powder spreading mechanism 31, but also allows the recovered hot melt adhesive powder to slide quickly down the inclined side wall of the powder storage bin 321 to the bottom of the powder storage bin 321.

[0124] The powder storage hopper 321 includes a powder recovery section 321a and a powder storage section 321b. The powder recovery section 321a is located above the powder storage section 321b, and a powder recovery port 3215 is formed at the upper end of the powder recovery section 321a. The width of at least a portion of the hopper of the powder recovery section 321a gradually decreases from top to bottom, and the width of at least a portion of the hopper of the powder storage section 321b also gradually decreases from top to bottom. This allows for easier transfer of hot melt adhesive powder even when the capacity is small. A powder recovery cavity 321a1 is formed in the powder recovery section 321a; a powder storage cavity 321b1 is formed in the powder storage section 321b.

[0125] Furthermore, a grid 325 is provided inside the powder storage bin 321 near the powder recovery port 3215. By providing the grid 325, it is possible to prevent the hot melt adhesive powder in the powder storage bin 321 from being carried away by the airflow generated by the swinging of the swinging member 21 when there is a large amount of hot melt adhesive powder in the powder storage bin 321.

[0126] The powder storage mechanism 32 includes a powder filling hopper 322. The powder filling hopper 322 is rotatably and retractably installed in the powder storage hopper 321, and is used to store hot melt adhesive powder. The powder filling hopper 322 has a powder discharge port, through which the hot melt adhesive powder in the powder filling hopper 322 can be poured into the powder storage hopper 321.

[0127] Figure 15 is a structural schematic diagram of the baking equipment provided in this application from a second perspective.

[0128] As shown in Figures 3 and 15, a first through hole 3214 is formed on one side wall of the powder storage bin 321, and the powder adding bin 322 is inserted through the first through hole 3214.

[0129] Figure 16 is a schematic diagram of the internal structure of the powder-spreading assembly provided in this application. Figure 17 is a schematic diagram of the structure of the powder-spreading assembly provided in this application from a second perspective. Figure 18 is a cross-sectional view of Figure 17 along the EE direction.

[0130] As shown in Figures 16 to 18, a third limiting protrusion 3222 is formed on the side wall of the powder filling chamber 322, and the protruding direction of the third limiting protrusion 3222 is consistent with the orientation of the powder discharge port of the powder filling chamber 322. A first notch 32141 is formed on the upper part of the first through hole 3214, and the third limiting protrusion 3222 is adapted to the first notch 32141.

[0131] A first limiting protrusion 3212 and a second limiting protrusion 3213 are formed on the inner wall of the powder storage bin 321 near the first through hole 3214. The first limiting protrusion 3212 is located at the upper part of the first through hole 3214, and the second limiting protrusion 3213 is located at the lower part of the first through hole 3214.

[0132] The powder filling hopper 322 has a first position and a second position relative to the powder storage hopper 321. When the powder filling hopper 322 is in the first position, the first notch 32141 is correspondingly positioned with the third limiting protrusion 3222, and the third limiting protrusion 3222 abuts against the first limiting protrusion 3212. When the powder filling hopper 322 rotates until the third limiting protrusion 3222 abuts against the first limiting protrusion 3212, the powder filling hopper 322 can be pulled out of the powder storage hopper 321. When the powder filling hopper 322 is in the second position, the third limiting protrusion 3222 abuts against the second limiting protrusion 3213. At this time, the powder discharge port of the powder filling hopper 322 faces downward, and the hot melt adhesive powder in the powder filling hopper 322 can be transferred to the powder storage hopper 321.

[0133] In some embodiments, the first limiting protrusion 3212 and the second limiting protrusion 3213 are disposed at both ends of the first through hole 3214 in the radial direction. The second limiting protrusion 3213 limits the third limiting protrusion 3222 to the bottom of the first through hole 3214. In this way, when the powder filling chamber 322 pours hot melt adhesive powder into the powder storage chamber 321, the powder discharge port of the powder filling chamber 322 faces downward, ensuring that the hot melt adhesive powder in the powder filling chamber 322 can fall completely into the powder storage chamber 321.

[0134] When adding hot melt adhesive powder, rotate the powder filling hopper 322 until the third limiting protrusion 3222 abuts against the first limiting protrusion 3212, pull out the powder filling hopper 322, add hot melt adhesive powder into the powder filling hopper 322, then insert the powder filling hopper 322 into the powder storage hopper 321, and rotate the powder filling hopper 322 to pour the hot melt adhesive powder in the powder filling hopper 322 into the powder storage hopper 321. Repeat this operation until the powder filling operation is completed.

[0135] The powder storage bin 321 is also provided with a sleeve 3216, which can support the powder filling bin 322. The sleeve 3216 can rotate relative to the powder storage bin 321, and the sleeve 3216 abuts against the lower outer side of the powder filling bin 322.

[0136] A fourth sensor 323 is installed inside the powder storage hopper 321. The fourth sensor 323 can detect the volume of hot melt adhesive powder in the powder storage hopper 321. When the volume of hot melt adhesive powder in the powder storage hopper 321 is lower than a certain value, the fourth sensor 323 will issue an alarm to prompt the addition of powder.

[0137] Multiple fourth sensors 323 can be installed at different heights within the powder storage hopper 321 to generate different powder addition signals.

[0138] As shown in Figure 15, further, a powder filling port 12 is formed on the outer shell 1, and a powder filling chamber 322 is provided corresponding to the powder filling port 12. The powder filling port 12 is used to remove the powder filling chamber 322. A powder filling cover 6 is attached to the powder filling port 12 to close the powder filling port 12 and prevent accidental contact with the powder filling chamber 322.

[0139] The powder filling cover 6 can be movably connected to the housing 1, or one side of the powder filling cover 6 can be rotatably connected to the housing 1 via a connector. A rebound member 324 is provided on the outer wall of the powder storage chamber 321, and the other side of the powder filling cover 6 can be connected to the powder storage chamber 321 via the rebound member 324 to facilitate the opening and closing of the powder filling cover 6 and the removal and placement of the powder filling chamber 322.

[0140] In this embodiment, the powder adding hopper 322 can add 2kg of hot melt adhesive powder at a time, and the powder storage hopper 321 can hold 4kg of hot melt adhesive powder. The powder storage hopper 321 has a large capacity, which can reduce the frequency of powder adding.

[0141] As shown in Figures 3, 6, and 18, the powder dispensing assembly 3 includes a powder circulation mechanism 33. The powder circulation mechanism 33 is disposed within the powder dispensing mechanism 31 and the powder storage mechanism 32, and is used to transfer the hot melt adhesive powder in the powder storage mechanism 32 to the powder dispensing mechanism 31.

[0142] The powder circulation mechanism 33 includes a powder circulation synchronous belt 331, a transmission structure 335, and a fourth motor 332. The powder circulation synchronous belt 331 forms a circulation loop between the powder spreading mechanism 31 and the powder storage mechanism 32.

[0143] The transmission structure 335 includes a driving wheel 3351 and a plurality of driven wheels 3352. The driving wheel 3351 and the driven wheels 3352 are respectively located in the circulation direction of the powder circulation synchronous belt 331. Both the driving wheel 3351 and the driven wheels 3352 are connected to the powder circulation synchronous belt 331 for transmission. The driven wheels 3352 are used to change the transmission direction of the powder circulation synchronous belt 335.

[0144] The fourth motor 332 is connected to the powder circulation synchronous belt 331 for driving the powder circulation synchronous belt 331 to move cyclically along the powder spreading mechanism 31 and the powder storage mechanism 32, so as to transfer the hot melt adhesive powder in the powder storage mechanism 32 to the powder spreading mechanism 31, thereby realizing the spreading, recycling and reuse of hot melt adhesive powder.

[0145] The powder circulation synchronous belt 331 is connected to the driving wheel 3351 and the driven wheel 3352, and forms a circulation loop between the powder spreading mechanism 31 and the powder storage mechanism 32. A portion of the powder circulation synchronous belt 331 is located above the powder spreading mechanism 31, and a portion of the powder circulation synchronous belt 331 is located in the powder storage mechanism 32. The powder circulation synchronous belt 331 is used to carry out a portion of the hot melt adhesive powder in the powder storage mechanism 32 and transfer it to the powder spreading assembly 3.

[0146] As shown in Figure 16, the powder circulation synchronous belt 331 includes a body 3312 and a plurality of protrusions 3311 disposed on the outside of the body 3312. The inner side of the body 3312 is connected to the transmission structure 335 for transmission. The plurality of protrusions 3311 are spaced apart, and a powder space is formed between two adjacent protrusions 3311. The powder space is used to carry hot melt adhesive powder.

[0147] The portion of the powder circulation synchronous belt 331 located within the powder storage mechanism 32 extends to the bottom of the powder storage bin 321. The bottom of the powder storage bin 321 forms a trough through which the powder circulation synchronous belt 331 passes. During the circulation movement of the powder circulation synchronous belt 331, the protrusion 3311 carries the hot melt adhesive powder in the powder storage bin 321 along the trough inside the powder storage bin 321 and rises to the powder spreading bin 311.

[0148] As shown in Figure 6, the powder circulation mechanism 33 also includes a powder unloading component 334, which is disposed above the powder dispensing bin 311 of the powder dispensing mechanism 31 and located outside the powder circulation synchronous belt 311. At least one powder unloading component 334 is provided along the length of the powder dispensing bin 311. During the movement of the powder circulation synchronous belt 331, the powder unloading component 334 is used to unload the hot melt adhesive powder carried on the powder circulation synchronous belt 331, so that the hot melt adhesive powder falls into the powder dispensing bin 311.

[0149] The powder unloading component 334 can cover most of the area of ​​the powder circulation mechanism 33 in the powder dispensing bin 311, so that the hot melt adhesive powder can be transferred more evenly into the powder dispensing bin 311, thereby improving the uniformity of hot melt adhesive powder adhesion on the film material 100. In some examples, multiple powder unloading components 334 are arranged at intervals along the length direction of the powder dispensing bin 311, which not only enables the hot melt adhesive powder to be transferred more evenly into the powder dispensing bin 311, but also reduces the friction between the powder unloading component 334 and the powder circulation mechanism 33.

[0150] As shown in Figures 6 and 16, a powder guide groove 3211 is provided on one side of the powder storage bin 321. The powder guide groove 3211 extends along the height direction of the powder storage bin 321. The powder circulation synchronous belt 331 is provided in the powder guide groove 3211, which drives the hot melt adhesive powder from the powder storage bin 321 to the powder spreading bin 311.

[0151] The powder circulation mechanism 33 also includes a tensioning mechanism 333, which is inserted into the powder storage mechanism 32 and is rotatably connected to the powder circulation timing belt 331 to adjust the tension of the powder circulation timing belt 331.

[0152] In some embodiments, the tensioning mechanism 333 includes a tensioning element 3331 and a tensioning screw 3332. The tensioning element 3331 is disposed in the powder storage bin 321, and the powder circulation synchronous belt 331 passes through the tensioning element 3331. One of the driven pulleys 3352 of the powder circulation synchronous belt 331 is rotatably connected to the tensioning element 3331, and one end of the tensioning screw 3332 passes through a side wall of the powder storage bin 321 and is connected to the tensioning element 3331. By adjusting the length of the tensioning screw 3332 screwed into the powder storage bin 321, the tension of the powder circulation synchronous belt 331 can be adjusted to ensure the normal operation of the powder circulation synchronous belt 331.

[0153] As shown in Figures 14 and 16, the powder application assembly 3 also includes a powder-tapping mechanism 34. The powder-tapping mechanism 34 is disposed between the powder application mechanism 31 and the powder storage mechanism 32, and is located in the conveying path of the membrane material 100. The powder-tapping mechanism 34 is used to tap the membrane material 100 after the hot melt adhesive powder has been applied, so as to shake off the hot melt adhesive powder that has not adhered to the membrane material 100.

[0154] The powder-tapping mechanism 34 includes a fifth motor 341, a rotating shaft 342, and at least one tapping element 343 disposed on the rotating shaft 342. The fifth motor 341 is connected to the rotating shaft 342 for driving the rotating shaft 342 to rotate. When the rotating shaft 342 rotates, the tapping element 343 can rotate to the back of the membrane material 100 located in the buffer assembly 2 and contact the back of the membrane material 100 to tap the membrane material 100, shake off excess hot melt adhesive powder on the membrane material 100, and improve the utilization rate of hot melt adhesive powder.

[0155] When the powder-tapping mechanism 34 is in operation, the fifth motor 341 rotates in both the forward and reverse directions in a cycle, so that the tapping component 343 can produce intermittent tapping action on the membrane material 100.

[0156] In some embodiments, multiple tapping elements 343 are provided, and the multiple tapping elements 343 are distributed at intervals along the axial direction of the rotation axis 342 to cover a wider area of ​​the membrane material 100 and more effectively shake off excess hot melt adhesive powder on the membrane material 100.

[0157] As shown in Figure 14, the powder-tapping mechanism 34 is disposed on the side of the buffer assembly 2 facing away from the feed inlet 11 and is fixed below the buffer assembly 2. A clearance groove 214 is provided at the end of the swing member 21 facing away from the feed inlet 11. The opening of the clearance groove 214 faces the conveying direction of the film material 100, and multiple clearance grooves 214 are spaced apart along the length a of the swing member 21 in the baking equipment 01. The clearance groove 214 is correspondingly disposed with the tapping member 343. The tapping member 343 can rotate and insert into the clearance groove 214, and can tap the back of the film material 100 located in the buffer assembly 2 to shake off the unadhered hot melt adhesive powder on the film material 100.

[0158] As shown in Figures 14 and 16, the tapping component 343 includes a clamping body 3431 and a flexible component 3432 fixed to the end of the clamping body 3431. The clamping body 3431 is fixed to the rotating shaft 342, and the flexible component 3432 can be disposed at one end or both ends of the clamping body 3431. For example, the flexible component 3432 can be made of silicone, which has a certain strength and can not only produce an effective tapping effect on the membrane material 100, but also will not scratch the membrane material 100.

[0159] Figure 19 is a schematic diagram of the baking assembly provided in this application. Figure 20 is a cross-sectional view of Figure 19 along the DD direction.

[0160] As shown in Figures 3, 19, and 20, the baking assembly 5 includes a housing 51, a heating element 52, and an exhaust structure 53. An air inlet 511 is formed at the bottom of the housing 51, and the conveying assembly 4 surrounds at least a portion of the housing 51. At least one heating element 52 is disposed within the housing 51 and is used to generate heat. The exhaust structure 53 communicates with the interior of the housing 51. The exhaust structure 53 can be connected to an external exhaust gas purification device to drive airflow within the housing 51, thereby discharging the exhaust gas generated within the housing 51 to the external exhaust gas purification device.

[0161] When the membrane material 100 passes through the baking assembly 5, it moves between the housing 51 and the heating element 52. During the baking process, the membrane material 100 can surround the housing 51, passing through the front surface, upper surface and rear surface of the housing 51 in sequence, so that the membrane material 100 can be baked evenly, thereby shortening the baking time and improving the baking effect.

[0162] As shown in Figures 3 and 8, the exhaust structure 53 includes an exhaust fan 531, a first exhaust pipe 532, and a second exhaust pipe 533. The exhaust fan 531 is located at the top of the housing 51 and communicates with the interior of the housing 51. The first exhaust pipe 532 communicates with the outlet of the exhaust fan 531, and the second exhaust pipe 533 communicates with the first exhaust pipe 532. The other end of the second exhaust pipe 533 is connected to an external exhaust gas purification device. The inner diameter of the first exhaust pipe 532 is smaller than the inner diameter of the second exhaust pipe 533, which creates a Bernoulli fluid within the exhaust structure 53, increasing the emission velocity of the exhaust gas within the housing 51.

[0163] The first exhaust pipe 532 and the second exhaust pipe 533 are axially connected and are located inside the baking chamber 51, which improves the compactness of the baking equipment 01 to a certain extent and reduces the volume of the baking equipment 01.

[0164] At least one heating element 52 is provided. The heating element 52 is located inside the housing 51 and is used to dry the film material 100 that has passed through the baking assembly 5.

[0165] Multiple heating elements 52 can be provided, and the multiple heating elements 52 are distributed at intervals along the height direction of the housing 51. The distribution of heating elements 52 along the height direction reduces the overall size of the machine to a certain extent.

[0166] The multiple heating elements 52 can be evenly or unevenly distributed. The multiple heating elements 52 can be set to the same power or different power, depending on the pattern or material to be dried.

[0167] In some embodiments, as shown in Figures 8 and 19, the exhaust structure 53 includes a first fan 54, a first exhaust pipe 532, and a second exhaust pipe 533. The first fan 54 is disposed at the bottom of the housing 51 and is capable of supplying air into the housing 51. By supplying air into the housing 51 through the first fan 54, the convection speed inside the housing 51 can be accelerated, allowing the exhaust gas generated inside the housing 51 to be discharged more quickly through the first exhaust pipe 532 and the second exhaust pipe 533 to the exhaust gas purification device.

[0168] As shown in Figures 8 and 20, the baking assembly 5 also includes an isolation chamber 55, the walls of which are mesh-like. The heating element 52 is disposed within the isolation chamber 55, thus isolating the heating element 52 from the membrane material 100. The mesh-like structure of the isolation chamber 55 does not affect the heating effect of the heating element 52, ensuring the drying effect of the membrane material 100.

[0169] As shown in Figure 20, the sidewalls of the housing 51 have an aluminum foil layer 512 and an insulation material layer 513. The aluminum foil layer 512 and the insulation material layer 513 can reduce heat loss within the baking assembly 5 and prevent the heat generated by the baking assembly 5 from affecting other components of the baking equipment 01. The inner wall of the housing 51 has a mirror layer 514. The mirror layer 514 generates heat radiation to the hot air, which can reduce heat loss.

[0170] In this embodiment, as shown in Figures 19 and 20, three heating elements 52 are installed inside the housing 51, which can meet the drying requirements of most DTF printed parts. Two first fans 54 are provided, and the two first fans 54 are arranged side by side along the bottom of the housing 51 to meet the gas circulation requirements inside the housing 51.

[0171] Multiple cooling fans are also connected to the outside of the housing 51. The exhaust direction of the cooling fans can be directed towards the second transmission module 421 to accelerate the airflow speed on the surface of the second transmission module 421, thereby improving the cooling effect of the second transmission module 421.

[0172] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and concept of this application, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

[0173] Although this application has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since this application can be embodied in many forms without departing from the spirit or substance of the application, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A baking apparatus, characterized in that, The baking equipment includes: a shell, and a buffer component, a powder-sprinkling component, a conveying component, and a baking component disposed within the shell; The outer shell has a feed inlet, through which the membrane material can enter the outer shell; The buffer assembly is disposed between the feed inlet and the conveying assembly, and the buffer assembly is used to guide the membrane material entering from the feed inlet to the conveying assembly; The powder-spreading component is located between the feed inlet and the conveying component, and the buffer component is inserted into the powder-spreading component. The powder-spreading component is used to contain hot melt adhesive powder and to spread the hot melt adhesive powder onto the film material. The conveying assembly is used to convey the membrane material; The baking component is located in the conveying path of the membrane material and is used to bake the membrane material so that the hot melt adhesive powder melts onto the membrane material.

2. The baking equipment according to claim 1, characterized in that, The feed inlet is located on one side of the outer shell in the width direction of the baking equipment. The powder-sprinkling component extends along the height direction and the length direction of the baking equipment. The buffer component extends along the length direction of the baking equipment. The baking component is located on one side of the powder-sprinkling component in the width direction of the baking equipment and is located on the same side of the width direction of the baking equipment as the feed inlet.

3. The baking equipment according to claim 2, characterized in that, An installation space for mounting external equipment is formed on the upper outer side of the outer shell. A first receiving cavity is formed inside the outer shell, which is arranged side by side with the installation space in the width direction of the baking equipment, and a second receiving cavity is formed below the first receiving cavity and the installation space in the height direction of the baking equipment. The feed port connects the first receiving cavity and the installation space. The buffer assembly is disposed in the first receiving cavity. A part of the powdering assembly is disposed in the first receiving cavity. Another part of the powdering assembly is disposed in the second receiving cavity. The baking assembly is disposed in the second receiving cavity and is located below the installation space.

4. The baking equipment according to claim 3, characterized in that, The baking equipment also includes a receiving component, which is disposed at the bottom of the outer shell. The receiving component has a receiving cavity and a receiving port connecting the receiving cavity and the second receiving cavity. The receiving port is opposite to the conveying component located at the bottom of the baking component, and the film material on the conveying component can enter the receiving cavity through the receiving port.

5. The baking equipment according to claim 4, characterized in that, The receiving assembly includes a receiving bin and a guide. The receiving bin has a receiving cavity and a receiving port. The guide is located at one end of the receiving bin near the receiving port. Film material that falls off the conveying assembly can be guided to the receiving cavity by the guide.

6. The baking equipment according to claim 5, characterized in that, The receiving bin is detachably mounted on the outer casing.

7. The baking equipment according to claim 5, characterized in that, The guide has an inclined surface or a curved surface.

8. The baking equipment according to claim 5, characterized in that, The guide is configured as a fan, with the fan's outlet facing the receiving port.

9. The baking apparatus according to claim 8, characterized in that, The fan is provided in multiple units, which are arranged at the position where the membrane material is detached from the conveying component, and the multiple fans are distributed at intervals along the width direction of the membrane material.

10. The baking apparatus according to claim 5, characterized in that, The receiving assembly includes a fifth sensor, which is disposed inside the receiving bin or on the surface of the outer shell opposite to the receiving bin. The fifth sensor is used to detect the amount of film material stored in the receiving bin.

11. The baking apparatus according to claim 10, characterized in that, The fifth sensor is a photoelectric sensor.

12. The baking equipment according to claim 2, characterized in that, The conveying assembly includes a first conveying sub-assembly, a second conveying sub-assembly, a transmission sub-assembly, and a first motor. The first motor is drivenly connected to the transmission sub-assembly, and the transmission sub-assembly is drivenly connected to the first conveying sub-assembly and the second conveying sub-assembly. A portion of the first conveying sub-assembly is located on the side of the powder-spreading assembly opposite to the feed inlet, and a portion of the first conveying sub-assembly is located below the powder-spreading assembly in the height direction. The second conveying sub-assembly at least surrounds a portion of the baking assembly. During the conveying process of the film material, the film material can be transferred from the first conveying sub-assembly to the second conveying sub-assembly.

13. The baking apparatus according to claim 12, characterized in that, The first conveying sub-assembly includes two first conveying modules and a first transmission component that drives the two first conveying modules. The two first conveying modules are spaced apart along the length of the baking equipment.

14. The baking apparatus according to claim 13, characterized in that, The first transmission module includes a synchronous belt and multiple drive wheels. The synchronous belt meshes with the multiple drive wheels, and the lines connecting the multiple drive wheels can form a polygon.

15. The baking apparatus according to claim 14, characterized in that, The first transmission component is a transmission shaft, which extends along the length of the baking equipment; one end of the first transmission component is fixed to the transmission wheel of one of the first transmission modules, and the other end of the first transmission component is fixed to the transmission wheel of the other first transmission module.

16. The baking apparatus according to claim 14, characterized in that, One of the transmission wheels in the first transmission module is connected to the transmission sub-assembly via a transmission connection.

17. The baking apparatus according to claim 13, characterized in that, The first transmission sub-assembly further includes a first limiting member disposed on the outside of the first transmission module, the first limiting member being used to prevent the membrane material from detaching from the first transmission module.

18. The baking apparatus according to claim 17, characterized in that, The first limiting member is configured as a guide rail, and the guide rail at least covers a portion of the first conveying module.

19. The baking apparatus according to claim 17, characterized in that, A first gap is formed between the first limiting member and the first conveying module, and the membrane material is able to move within the first gap.

20. The baking apparatus according to claim 17, characterized in that, A third guide is provided at one end of the first limiting member near the buffer assembly. The end of the third guide is curved upward to guide the membrane material entering the conveying assembly.

21. The baking apparatus according to claim 20, characterized in that, The third guide has a guide surface or a guide slope, and the tangent angle of the guide surface gradually decreases.

22. The baking apparatus according to claim 19, characterized in that, The second conveying sub-assembly includes two second conveying modules and a second transmission component that drives the two second conveying modules. The two second conveying modules are spaced apart along the length of the baking equipment.

23. The baking apparatus according to claim 22, characterized in that, The second transmission module includes a synchronous belt and multiple drive wheels. The synchronous belt meshes with the multiple drive wheels, and the lines connecting the multiple drive wheels can form a polygon.

24. The baking apparatus according to claim 23, characterized in that, The second transmission component is a transmission shaft, which extends along the length of the baking equipment; one end of the second transmission component is fixed to the transmission wheel of one of the second transmission modules, and the other end of the second transmission component is fixed to the transmission wheel of another second transmission module.

25. The baking apparatus according to claim 23, characterized in that, One of the drive wheels of the second transmission module is connected to the drive sub-assembly in a driving connection.

26. The baking apparatus according to claim 23, characterized in that, The second transmission sub-assembly further includes a second limiting member disposed on the outside of the second transmission module, the second limiting member being used to prevent the membrane material from detaching from the second transmission module.

27. The baking apparatus according to claim 26, characterized in that, The second limiting member is configured as a guide rail, which at least covers a portion of the second conveying module.

28. The baking apparatus according to claim 26, characterized in that, A second gap is formed between the second limiting member and the second conveying module, and the membrane material is able to move within the first gap.

29. The baking apparatus according to claim 22, characterized in that, The transmission sub-assembly includes a first gear, a second gear, and a third gear. The first gear is disposed between the second gear and the third gear. The first gear meshes with the second gear and the third gear respectively. The first gear is connected to one of the first transmission modules in the first transmission sub-assembly. The second gear is connected to one of the second transmission modules in the second transmission sub-assembly. The third gear is connected to the first motor drive.

30. The baking apparatus according to claim 29, characterized in that, The rotation direction of the first gear is the same as the rotation direction of the first transmission module.

31. The baking apparatus according to claim 26, characterized in that, The conveying assembly further includes a guide disposed between the first conveying sub-assembly and the second conveying sub-assembly, the guide being used to guide the membrane material from the first conveying sub-assembly to the second conveying sub-assembly.

32. The baking apparatus according to claim 31, characterized in that, The guide includes a second guide disposed on the side of the second limiting member near the first transmission sub-assembly; the second guide has an inclined surface facing the first transmission sub-assembly, and the inclined surface of the second guide is used to guide the membrane material from the first transmission module to the second transmission module.

33. The baking apparatus according to claim 32, characterized in that, The guide includes a first guide disposed on the side of the first limiting member near the second transmission sub-assembly; the first guide has an inclined surface facing the second transmission sub-assembly, and the inclined surface of the first guide is used to guide the membrane material to detach from the first transmission member.

34. The baking apparatus according to claim 33, characterized in that, The first guide member and the second guide member are misaligned.

35. The baking apparatus according to any one of claims 1 to 34, characterized in that, The conveying assembly is provided with a first mating part, which is used to mate with a second mating part on the membrane material to fix the membrane material to the conveying assembly.

36. The baking apparatus according to claim 35, characterized in that, The first mating part is configured as a boss, and the second mating part is configured as a fixing hole, wherein the boss can be inserted into the fixing hole.

37. The baking apparatus according to claim 36, characterized in that, The diameter of the cross-section of the boss gradually decreases from the fixed end of the boss to the free end of the boss.

38. The baking apparatus according to claim 36, characterized in that, The protrusions are provided in multiple ways, and the multiple protrusions are distributed at intervals along the conveying direction of the membrane material.

39. The baking apparatus according to claim 38, characterized in that, The transmission component includes a code disk and a sixth sensor. The periphery of the code disk is provided with a plurality of gear teeth arranged at intervals along the circumference of the code disk. The distance between two adjacent gear teeth is equal to or proportional to the distance between two adjacent bosses. The rotation trajectory of the code disk is within the detection range of the sixth sensor, which is used to detect the rotation distance of the code disk.

40. The baking apparatus according to any one of claims 1 to 39, characterized in that, The buffer assembly includes a bracket and a swing member disposed on the bracket. The bracket is fixed inside the housing, and the swing member is disposed opposite to the feed inlet. The swing member is capable of swinging relative to the bracket, and can swing within a range between a first position and a second position. The oscillating member has a feeding surface with a varying tilt angle. When the oscillating member is in the first position, the two ends of the oscillating member corresponding to the feeding surface are close to the feed inlet and the conveying assembly, respectively. When the oscillating member is in the second position, the feeding surface is relatively far away from the feed inlet.

41. The baking apparatus according to claim 40, characterized in that, The feeding surface includes a first conveying sub-surface and a second conveying sub-surface connected together. The first conveying sub-surface and the second conveying sub-surface are curved surfaces. In the width direction of the swing member, the tangent angle of the first conveying sub-surface gradually increases, and the tangent angle of the second conveying sub-surface gradually decreases.

42. The baking apparatus according to any one of claims 1 to 41, characterized in that, The powder-spraying component includes: A powder-spraying mechanism is disposed above the buffer assembly and is used to spray hot melt adhesive powder onto the membrane material passing through the buffer assembly; A powder storage mechanism, located below the buffer assembly, is used to store hot melt adhesive powder; A powder circulation mechanism, at least a portion of which is disposed within the powder storage mechanism, circulates between the powder dispensing mechanism and the powder storage mechanism, and is used to carry a portion of the hot melt adhesive powder in the powder storage mechanism and transfer at least a portion of the hot melt adhesive powder to the powder dispensing mechanism.

43. The baking apparatus according to claim 42, characterized in that, The powder storage mechanism has a connected powder recovery chamber and a powder storage chamber. The powder recovery chamber is closer to the powder spreading mechanism than the powder storage chamber. The powder spreading mechanism is located above the powder recovery chamber. At least a portion of the buffer assembly is located within the powder recovery chamber. The buffer assembly is capable of swinging within the powder recovery chamber.

44. The baking apparatus according to claim 43, characterized in that, The powder storage structure includes a powder storage bin, a powder recovery chamber and a powder storage chamber formed in the powder storage bin, and the powder storage bin has an upward-facing powder recovery port.

45. The baking apparatus according to claim 44, characterized in that, The powder storage bin includes a powder recovery section and a powder storage section. The powder recovery section is located above the powder storage section, and the powder recovery port is formed at the upper end of the powder recovery section. The width of the powder recovery section gradually decreases from top to bottom in at least a portion of the bin, and the width of the powder storage section gradually decreases from top to bottom in at least a portion of the bin.

46. ​​The baking apparatus according to claim 44, characterized in that, The powder storage bin is equipped with a grid inside, and the grid is located near the powder recovery port.

47. The baking apparatus according to claim 44, characterized in that, The powder storage mechanism includes a powder filling bin, which is rotatable and removable within the powder storage bin; the powder filling bin is provided with a powder discharge port, through which the hot melt adhesive powder in the powder filling bin can enter the powder storage bin.

48. The baking apparatus according to claim 47, characterized in that, A first through hole is formed on one side wall of the powder storage bin, and the powder filling bin is inserted through the first through hole; a third limiting protrusion is formed on the side wall of the powder filling bin, and the protruding direction of the third limiting protrusion is consistent with the orientation of the powder discharge port of the powder filling bin; a first notch is formed at the upper part of the first through hole, and the third limiting protrusion is adapted to the first notch.

49. The baking apparatus according to claim 48, characterized in that, The inner wall of the powder storage bin is provided with a first limiting protrusion and a second limiting protrusion near the first through hole. The first limiting protrusion is located at the upper part of the first through hole, and the second limiting protrusion is located at the lower part of the first through hole. The powder filling hopper has a first position and a second position relative to the powder storage hopper. When the powder filling hopper is in the first position, the first notch is correspondingly arranged with the third limiting protrusion, and the third limiting protrusion abuts against the first limiting protrusion. When the powder filling hopper is in the second position, the third limiting protrusion abuts against the second limiting protrusion.

50. The baking apparatus according to claim 47, characterized in that, The powder storage bin is equipped with a sleeve that can rotate relative to the powder storage bin and abuts against the lower outer side of the powder filling bin.

51. The baking apparatus according to claim 44, characterized in that, The powder storage silo is equipped with a fourth sensor, which is used to detect the volume of hot melt adhesive powder in the powder storage silo.

52. The baking apparatus according to claim 51, characterized in that, The fourth sensor is provided in multiple locations, and the multiple fourth sensors are arranged at different height positions inside the powder storage bin.

53. The baking apparatus according to claim 42, characterized in that, The powder circulation mechanism includes a powder circulation synchronous belt, a transmission structure, and a fourth motor. The transmission structure includes a driving wheel and multiple driven wheels. The driving wheel and the driven wheels are respectively located in the circulation direction of the powder circulation synchronous belt. Both the driving wheel and the driven wheels are connected to the powder circulation synchronous belt. The fourth motor is connected to the powder circulation synchronous belt and is used to drive the powder circulation synchronous belt to circulate along the powder spreading mechanism and the powder storage mechanism.

54. The baking apparatus according to claim 53, characterized in that, The powder circulation synchronous belt includes a body and a plurality of protrusions disposed on the outside of the body. The inside of the body is connected to the transmission structure. The plurality of protrusions are spaced apart, and a powder space is formed between two adjacent protrusions. The powder space is used to carry hot melt adhesive powder.

55. The baking apparatus according to claim 53, characterized in that, The powder-spreading mechanism includes a powder-spreading bin, a powder-spreading roller, and a third motor. The powder-spreading roller is disposed in the powder-spreading bin and extends along the length of the powder-spreading bin. The third motor is used to drive the powder-spreading roller to rotate, so that the hot melt adhesive powder in the powder-spreading bin is spread downward onto the film material.

56. The baking apparatus according to claim 55, characterized in that, The powder circulation mechanism also includes a powder unloading component, which is located above the powder spreading chamber and outside the powder circulation synchronous belt. The powder unloading component is used to unload the hot melt adhesive powder carried on the powder circulation synchronous belt so that the hot melt adhesive powder falls into the powder spreading chamber.

57. The baking apparatus according to claim 42, characterized in that, The powder-spreading assembly also includes a powder-tapping mechanism, which is disposed between the powder-spreading mechanism and the powder storage mechanism. The powder-tapping mechanism is located in the conveying path of the membrane material and is used to tap the membrane material after the hot melt adhesive powder is spread, so as to shake off the hot melt adhesive powder that has not been adhered to the membrane material.

58. The baking apparatus according to claim 57, characterized in that, The powder-tapping mechanism includes a fifth motor, a rotating shaft, and at least one tapping component disposed on the rotating shaft. The fifth motor is connected to the rotating shaft for driving the rotating shaft to rotate. The tapping component can contact the back of the membrane material to tap the membrane material and shake off the hot melt adhesive powder on the membrane material.

59. The baking apparatus according to any one of claims 1 to 58, characterized in that, The baking assembly includes: The housing has an air vent at its bottom, and the conveying assembly surrounds at least a portion of the housing. A heating element is provided, at least one of which is disposed inside the housing and is used to generate heat. An exhaust structure is connected to the housing and is used to drive the airflow within the housing.

60. The baking apparatus according to claim 59, characterized in that, The baking assembly also includes an isolation chamber, in which the heating element is disposed, and the isolation chamber is used to form an isolation between the heating element and the membrane material.

61. The baking apparatus according to claim 60, characterized in that, The walls of the isolation box are mesh-like.

62. The baking apparatus according to claim 59, characterized in that, The side walls of the enclosure are provided with an aluminum foil layer and a thermal insulation material layer.

63. The baking apparatus according to claim 59, characterized in that, The inner wall of the box is formed with a mirror layer.

64. The baking apparatus according to claim 59, characterized in that, The conveying assembly surrounds at least a portion of the housing, and the membrane moves between the housing and the heating element as it passes through the baking assembly.

65. The baking apparatus according to claim 59, characterized in that, The exhaust structure includes an exhaust fan, a first exhaust pipe, and a second exhaust pipe. The exhaust fan is located at the top of the housing and communicates with the interior of the housing. The first exhaust pipe is connected to the air outlet of the exhaust fan. One end of the second exhaust pipe is connected to the first exhaust pipe, and the other end of the second exhaust pipe is used to connect to an external exhaust gas purification device.

66. The baking apparatus according to claim 65, characterized in that, The inner diameter of the first exhaust pipe is smaller than the inner diameter of the second exhaust pipe.

67. The baking apparatus according to claim 59, characterized in that, The exhaust structure includes a first fan, a first exhaust pipe, and a second exhaust pipe. The first fan is located at the bottom of the housing. The first fan is used to blow air into the housing, so that the exhaust gas generated inside the housing can be discharged to the external exhaust gas purification device through the first exhaust pipe and the second exhaust pipe.

68. A printing system, characterized in that, include: A printer used to print patterns on film materials; as well as, The baking apparatus according to any one of claims 1 to 67, wherein the baking apparatus is disposed downstream of the printer, and the baking apparatus is used to bake the film material.

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