Powder circulation mechanism, baking apparatus, and printing system

Abstract

The application discloses a powder circulating mechanism, a baking device and a printing system, and relates to the field of powder circulating mechanisms. The powder circulating mechanism is used for conveying hot-melt adhesive powder in a powder storage mechanism to a powder scattering mechanism. The powder circulating mechanism comprises a powder conveying belt, a transmission component and a driving member. The transmission component comprises a driving member and a driven member. The driving member is connected with the driving member. The powder conveying belt is arranged around the driving member and the driven member to move in a ring shape under the action of the driving member and the driven member. Part of the powder conveying belt is arranged above the powder scattering mechanism, and part of the powder conveying belt is arranged in the powder storage mechanism. The powder conveying belt has a powder storage space. Part of the hot-melt adhesive in the powder storage mechanism can enter the powder storage space. At least part of the hot-melt adhesive in the powder storage space can be transferred to the powder scattering mechanism along with the movement of the powder conveying belt. The structure can realize automatic feeding of the hot-melt adhesive powder in the powder scattering mechanism of the baking device, reduces the limitation on the storage amount of the hot-melt adhesive powder, and improves user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of digital printing, in particular to a powder circulating mechanism, an oven device and a printing system. BACKGROUND

[0002] DTF (Direct to Film) digital printing technology is a technology of printing an image or a design on a film material, and then transferring the image or the design on the film material to various textiles or other materials through heat transfer printing.

[0003] The DTF printing process includes inkjet printing, hot melt adhesive powder adhesion and baking processes. In the related art, the hot melt adhesive powder adhesion and baking processes can be implemented by an oven device. The hot melt adhesive powder adhesion process usually requires manual addition of hot melt adhesive powder to a powder scattering bin of a powder scattering mechanism. The capacity of the powder scattering bin is generally small, and therefore the hot melt adhesive powder needs to be added frequently, resulting in poor user experience. In addition, the oven device needs to stop working when the hot melt adhesive powder is added, which reduces the baking efficiency to some extent. UTILITY MODEL CONTENT

[0004] In view of the above deficiencies of the prior art, the present application aims to provide a powder circulating mechanism, an oven device and a printing system, which are designed to automatically add hot melt adhesive powder to a powder scattering mechanism of an oven device.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] In one aspect, the present application discloses a powder circulating mechanism for conveying hot melt adhesive powder in a powder storage mechanism to a powder scattering mechanism. The powder circulating mechanism comprises a driving member, a transmission component and a powder conveying belt. The transmission component comprises a driving member and a driven member. The driving member is connected to the driving member. The powder conveying belt is arranged around the driving member and the driven member to move in a ring shape under the action of the driving member and the driven member. Part of the powder conveying belt is arranged above the powder scattering mechanism, and part of the powder conveying belt is arranged in the powder storage mechanism. The powder conveying belt has a powder storage space. Part of the hot melt adhesive powder in the powder storage mechanism can enter the powder storage space. At least part of the hot melt adhesive powder in the powder storage space can be transferred to the powder scattering mechanism with the movement of the powder conveying belt.

[0007] In some embodiments of the present application, the powder storage space has at least two openings; and / or, the powder storage space is multiple, and multiple powder storage spaces are arranged at intervals along the extension direction of the powder conveying belt.

[0008] In some embodiments of the present application, the powder conveying belt comprises a body and a plurality of protrusions; the inner side of the body is arranged on the transmission component; the plurality of protrusions are arranged on the outer side of the body at intervals, and adjacent two protrusions form a powder storage space.

[0009] In some embodiments of the present application, the protrusions are made of flexible material.

[0010] In some embodiments of the present application, the powder circulating mechanism further comprises a powder discharging member; the powder discharging member is arranged on one side of the powder conveying belt and can extend into the powder storage space to discharge the hot melt adhesive powder in the powder storage space to the powder scattering mechanism.

[0011] In some embodiments of the present application, the powder discharging member is a plurality of powder discharging members arranged at intervals along the powder conveying belt, and the plurality of powder discharging members can respectively extend into a plurality of powder storage spaces; and / or, the powder discharging member is in the form of a plate; and / or, the powder discharging member is arranged at intervals with the bottom of the powder storage space.

[0012] In some embodiments of the present application, the powder circulating mechanism further comprises a tensioning component; the tensioning component is connected with the powder conveying belt or the transmission component, and the tensioning component can move the transmission component or the powder conveying belt to tension the powder conveying belt.

[0013] In some embodiments of the present application, one of the driven members is arranged on the tensioning component.

[0014] Another aspect of the present application also discloses a baking equipment, which comprises the powder circulating mechanism according to any one of the above.

[0015] Another aspect of the present application also discloses a printing system, which comprises a printer and the baking equipment according to the above; the printer is used for printing a pattern on a film material; and the baking equipment is used for scattering hot melt adhesive powder on the film material after the pattern is printed by the printer and baking the film material.

[0016] Advantages:

[0017] The powder circulating mechanism provided by the present application realizes the automatic addition of hot melt adhesive powder in the powder scattering mechanism by arranging the powder conveying belt to move circularly between the powder storage mechanism and the powder scattering mechanism under the driving of the transmission component, and the powder conveying belt has a powder storage space, part of the hot melt adhesive powder in the powder storage mechanism can enter the powder storage space, and at least part of the hot melt adhesive powder in the powder storage space can be transferred to the powder scattering mechanism along with the movement of the powder conveying belt, thereby realizing the automatic addition of hot melt adhesive powder in the powder scattering mechanism and the automatic powder scattering of the equipment, and the hot melt adhesive powder does not need to be added frequently, thereby improving the use experience.

[0018] The baking equipment provided in this application achieves automatic powdering of hot melt adhesive powder during the powdering process by setting the powder circulation mechanism in the powdering component, and reduces the limitation of the powder storage mechanism on the amount of powder stored, reduces the frequency of adding hot melt adhesive powder, and improves the user experience.

[0019] The printing system provided in this application uses the aforementioned baking equipment connected to the printer, eliminating the need for frequent addition of hot melt adhesive powder, thus extending the device's battery life and improving the user experience. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a printing system provided in one embodiment of this application.

[0021] Figure 2 This is a schematic diagram of the baking apparatus provided in one embodiment of this application from a first-view perspective.

[0022] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0023] Figure 4 This is a schematic diagram of the internal structure of a baking apparatus provided in one embodiment of this application from a first-view perspective.

[0024] Figure 5 This is a schematic diagram of the internal structure of a baking apparatus provided in one embodiment of this application from a second perspective.

[0025] Figure 6 This is a schematic diagram of the structure of the powder-spraying component and the buffer component provided in one embodiment of this application.

[0026] Figure 7 A schematic diagram of the structure of a buffer component is provided for one embodiment of this application.

[0027] Figure 8 This is a schematic diagram of the structure of a transmission component provided in one embodiment of this application from a first-view perspective.

[0028] Figure 9 This is a schematic diagram of the structure of the transmission component provided in one embodiment of this application from a second perspective.

[0029] Figure 10 for Figure 9 Enlarged view of region C in the image.

[0030] Figure 11 for Figure 3 Enlarged view of region B in the image.

[0031] Figure 12 This is a schematic diagram of the powder-spraying mechanism provided in one embodiment of this application.

[0032] Figure 13A structure diagram of a powder scattering roller according to an embodiment of the present application.

[0033] Figure 14 A structure diagram of a powder scattering assembly according to an embodiment of the present application.

[0034] Figure 15 A structure diagram of a powder scattering assembly according to an embodiment of the present application.

[0035] Figure 16 A structure diagram of a powder scattering assembly according to an embodiment of the present application.

[0036] Figure 17 A structure diagram of a powder scattering assembly according to an embodiment of the present application.

[0037] Figure 18 A structure diagram of a powder scattering assembly according to an embodiment of the present application. Figure 17 A sectional view along the direction of E-E.

[0038] Figure 19 A structure diagram of a powder scattering assembly according to an embodiment of the present application.

[0039] Figure 20 A structure diagram of a powder scattering assembly according to an embodiment of the present application. Figure 19 A sectional view along the direction of D-D.

[0040] Explanation of main component symbols:

[0041] 01-baking equipment; 02-printer; 1-housing; 11-feeding port; 12-powder adding port; 13-frame; 14-side plate; 15-mounting space; 16-first receiving cavity; 17-second receiving cavity; 2-buffer assembly; 21-oscillating member; 211-feeding surface; 2112-first conveying sub-surface; 2111-second conveying sub-surface; 213-powder leakage hole; 214-avoidance groove; 22-second motor; 23-second sensor; 24-bracket; 241-mounting plate; 25-limiting member; 26-third sensor; 27-first sensor; 3-powder scattering assembly; 31-powder scattering mechanism; 311-powder scattering bin; 3111-stiffening rib; 313-powder scattering roller; 3131-powder groove; 314-third motor; 315-powder scraping member; 32-powder storage mechanism; 321-powder storage bin; 321a-powder recycling part; 321a1-powder recycling cavity; 321b-powder storage part; 321b1-powder storage cavity; 3211-powder guide groove; 3212-first limiting protrusion; 3213-second limiting protrusion; 3214-first via hole; 32141-first gap; 3215-powder recycling port; 3216-sleeve; 322-powder adding bin; 3222-third limiting protrusion; 323-fourth sensor; 324-rebound member; 325-grating; 33-powder circulation mechanism; 331-powder conveying belt; 3311-convex body; 3312-body; 3313-powder storage space; 332-driving member; 333-tensioning component; 3331-tensioning member; 3332-tensioning screw; 334-powder discharging member; 335-transmission component; 3351-driving member; 3352-driven member; 34-powder tapping mechanism; 341-fifth motor; 342-rotation shaft; 343-tapping member; 3431-clamping body; 3432-flexible member; 4-conveying assembly; 41-first conveying sub-assembly; 411-first conveying module; 412-first transmission member; 413-first limiting member; 4131-third guide part; 42-second conveying sub-assembly; 421-second conveying module; 422-second transmission member; 423-second limiting member; 43-transmission sub-assembly; 431-first gear; 432-second gear; 433-third gear; 44-first motor; 45-guide part; 451-first guide part; 452-second guide part; 46-first matching part; 47-coding disc; 48-sixth sensor; 5-baking assembly; 51-box body; 511-air supply port; 512-thermal insulation layer; 513-thermal insulation material layer; 514-mirror surface layer; 52-heating member; 53-exhaust structure; 531-exhaust fan; 532-first exhaust pipe; 533-second exhaust pipe; 54-first fan; 55-isolation box; 6-powder adding cover; 7-receiving assembly; 71-receiving bin; 711-receiving cavity; 712-receiving port; 72-guide member; 9-controller; 100-film material; a-length direction; b-height direction; c-width direction. DETAILED DESCRIPTION

[0042] The present application provides a powder circulating mechanism, a baking device and a printing system. In order to make the purpose, technical solutions and effects of the present application clearer and more explicit, the present application is further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0043] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, and a specific orientation configuration and operation, therefore, it cannot be understood as a limitation on the present application. In addition, "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0044] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] Figure 1 The structure diagram of the printing system provided by the present application is shown.

[0046] Please refer to Figure 1 The present application provides a DTF printing system, which comprises a printer 02 and a baking device 01, and the printer 02 can be an inkjet printer. The printer 02 is used to print a pattern on a film material 100. The baking device 02 can be arranged on one side of the discharge port of the printer 02, can receive the film material 100 after the printer 02 prints a pattern, is used to spread hot melt powder on the film material 100, and melts the hot melt powder on the film material 100 by baking, so that the pattern on the film material 100 can be transferred to other objects (such as clothes, hats, etc.).

[0047] In some embodiments, the film material 100 can be a PET film. The thickness of the film material 100 can be 0.75mm. The film material 100 with the material and thickness has good transferability, and can improve the clarity of the pattern transferred to the product. In other embodiments, the film material 100 can also be other types of films, and the thickness of the film material can also be other thicknesses, such as 0.5mm, 1mm, 0.6mm, etc.

[0048] Figure 2 A structural schematic diagram of the baking equipment from a first perspective of the present application is provided.

[0049] As shown in Figure 1 and Figure 2 , the baking equipment 01 includes a housing 1. The housing 1 is formed with an inlet 11 adapted for the film material 100 to pass through. The film material 100 after printing a pattern can pass through the inlet 11 into the baking equipment 01 for powdering and baking operations.

[0050] Figure 3 A structural schematic diagram of the baking equipment from a first perspective of the present application is provided. Figure 2 A sectional view along the A-A direction.

[0051] As shown in Figure 3 , in some embodiments, the housing 1 can include a rack 13 and a side plate 14 fixed to the rack 13. The rack 13 forms a frame structure for forming a support structure of the baking equipment 01. The side plate 14 is arranged outside the rack 13, and the inlet 11 can be formed on the side plate 14 on the side of the housing 1 facing the printer 02.

[0052] As shown in Figure 2 and Figure 3 , a receiving cavity is formed in the housing 1, and the baking equipment 01 further includes a buffer assembly 2, a powdering assembly 3, a conveying assembly 4 and a baking assembly 5. The buffer assembly 2, the powdering assembly 3, the conveying assembly 4 and the baking assembly 5 are respectively installed in the receiving cavity to improve the integrity of the baking equipment 01.

[0053] Specifically, the buffer assembly 2 is arranged between the inlet 11 and the conveying assembly 4, and is used to guide the film material 100 entering from the inlet 11 to the conveying assembly 4. The conveying speed of the film material 100 can be buffered in the buffer assembly 2, thereby realizing tension isolation between the conveying and feeding of the film material 100, so that they do not affect each other, and improving the conveying effect of the film material 100.

[0054] The powdering assembly 3 is arranged between the inlet 11 and the conveying assembly 4, and the buffer assembly 2 is arranged in the powdering assembly 3. The powdering assembly 3 is used to accommodate hot melt adhesive powder and to sprinkle the hot melt adhesive powder to the film material 100. When the film material 100 is buffered in the buffer assembly 2, the powdering assembly 3 can sprinkle the hot melt adhesive powder to the film material 100 in the upward direction of the film material 100, and recycle the excess hot melt adhesive powder.

[0055] The conveying assembly 4 is used to convey the film material 100, and the baking assembly 5 is arranged in the conveying path of the film material 100 and used to bake the film material 100 so that the hot melt powder is melted on the film material 100.

[0056] The above structure realizes the automatic operation of the feeding, powdering, conveying and baking of the film material 100, improves the baking efficiency of the film material 100, and improves the use experience.

[0057] As shown in Figure 1 and Figure 2 In some embodiments, the baking equipment 01 has a length direction a, a height direction b and a width direction c. The feeding port 11 is arranged at one side of the shell 1 in the width direction c, and the powdering assembly 3 extends along the height direction b and the length direction a. The buffer assembly 2 extends along the length direction a. The baking assembly 5 is arranged at one side of the powdering assembly 3 in the width direction c and is located on the same side of the feeding port 11 in the width direction c.

[0058] In the above, the positions of the various assemblies of the baking equipment 01 are reasonably arranged, the compactness of the structure of the baking equipment 01 is improved on the basis of not affecting the performance of the equipment, and the volume of the baking equipment 01 is reduced. By arranging the baking assembly 5 at one side of the powdering assembly 3 in the width direction c, the other side of the powdering assembly 3 in the width direction c has a space suitable for the extension of the conveying assembly 4, and the baking assembly 5 is distributed on the same side of the feeding port 11 in the width direction c. Since the feeding end of the feeding port 11 faces the externally connected equipment, that is, the baking assembly 5 is located on the side close to the external equipment during use, the heat generated by the baking assembly 5 during equipment operation does not make the operator feel uncomfortable, and the use experience is improved.

[0059] Further, in some embodiments, an installation space 15 for installing external devices is formed on the upper portion of the outer shell 1. A first receiving cavity 16 is formed in the outer shell 1 and arranged side by side with the installation space 15 in the width direction c. A second receiving cavity 17 is formed in the outer shell 1 and located below the first receiving cavity 16 and the installation space 15 in the height direction b. The feeding port 11 connects the first receiving cavity 16 and the installation space 15. The buffer assembly 2 is arranged in the first receiving cavity 16. Part of the powder scattering assembly 3 is arranged in the first receiving cavity 16, and the other part is arranged in the second receiving cavity 17. The baking assembly 5 is arranged in the second receiving cavity 17 and located below the installation space 15. In this way, the external device (such as a printer) can be directly installed on the installation space 15, saving installation area and shortening the transmission distance of the film material 100 from the external device to the baking device 01, thereby improving printing efficiency. The first receiving cavity 16 is arranged side by side with the installation space 15, and the buffer assembly 2 is arranged in the first receiving cavity 16, so that the film material 100 entering the baking device 01 from the external device through the feeding port 11 can be directly transmitted to the buffer assembly 2. Part of the powder scattering assembly 3 is arranged in the first receiving cavity 16, and the other part is arranged in the second receiving cavity 17, which fully utilizes the space in the height direction b and avoids occupying a large space in the width direction c. The baking assembly 5 is arranged in the second receiving cavity 17 and located below the installation space 15, which further fully utilizes the space in the height direction b and the space in the width direction c, so that the baking device 01 has a more compact structure layout and a smaller volume, which is convenient for users to operate.

[0060] Figure 4 The internal structure of the baking device in the first perspective view is provided.

[0061] As shown in Figure 3 and Figure 4 , the baking device 01 further comprises a material collecting assembly 7 arranged at the bottom of the outer shell 1. The material collecting assembly 7 forms a material collecting cavity 711 and a material collecting port 712. The material collecting port 712 connects the material collecting cavity 71 and the second receiving cavity 17. The material collecting port 712 is opposite to the conveying assembly 4 located at the bottom of the baking assembly 5, so that the film material 100 on the conveying assembly 4 enters the material collecting cavity 711 through the material collecting port 712. The material collecting assembly 7 provides a space for collecting the baked film material 100, which can immediately collect the baked film material 100 and reduce unnecessary waiting time, thereby improving the user experience. The material collecting assembly 7 is located on the other side of the powder scattering assembly 3 in the width direction c of the outer shell 1, which can effectively utilize the space of the second receiving cavity 17 and optimize the internal layout of the device. Moreover, the material collecting assembly 7 and the baking assembly 5 are located on different sides in the width direction c of the outer shell 1, so that the film material 100 can be taken out from the material collecting assembly 7 without being close to the baking assembly 5, thereby avoiding being scalded.

[0062] The receiving assembly 7 includes a receiving bin 71. The receiving bin 71 is connected to the housing 1 and located at the bottom of the housing 1, and is used to store the dried film material 100. The receiving bin 71 forms a receiving cavity 711 and a receiving port 712. The receiving bin 71 enables the automatic collection of the dried film material 100, thereby realizing the integrated automatic operation of the drying equipment.

[0063] The receiving bin 71 is detachably mounted on the housing 1 so that the receiving bin 71 can be removed.

[0064] The receiving assembly 7 may further include a guide 72, which is located at one 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. The guide 72 prevents the baked film material 100 from accumulating in the receiving bin 71 near the receiving port 712. For example, the guide 72 may be a component with a slope or curved surface (such as a ramp), or a fan, etc.

[0065] In this embodiment, the guide 72 is configured as a fan with the air outlet facing the receiving port 712. Multiple fans can be provided, and the multiple fans are distributed at intervals along the width of the film material 100 that has fallen off from the conveying assembly 4, so that the film material 100 can be subjected to a more uniform pushing force in the width direction, thereby being more neatly stored in the receiving bin 71.

[0066] The receiving assembly 7 may also include a fifth sensor (not shown in the figure). The fifth sensor may be disposed on the receiving hopper 71 or on the surface of the housing 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 one embodiment, the fifth sensor may be a photoelectric sensor, etc.

[0067] like Figure 4 As shown, the baking equipment 01 also includes a controller 9, which can be housed within the housing 1. In one embodiment, the controller 9 can be a PLC controller. The controller 9 is electrically connected to the buffer assembly 2, the powder-sprinkling 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.

[0068] The controller 9 may include a motherboard and electronic components and interfaces disposed on the motherboard. The motherboard may be fixed on the frame 13 or the side plate 14. In one embodiment, the motherboard may be disposed in the second receiving cavity 17 and located on the side of the powdering assembly 3 in the length direction a. In this way, the structural layout of the baking equipment 01 is more compact and makes full use of the space of the second receiving cavity 17.

[0069] Figure 5The internal structure of the baking equipment is shown in the second perspective view. Figure 6 The structure of the powdering assembly and the buffering assembly is shown in the structural schematic view. Figure 7 The structure of the buffering assembly is shown in the structural schematic view.

[0070] As shown in Figure 3 , Figure 5 , Figure 6 and Figure 7 , the buffering assembly 2 includes a bracket 24, a swing piece 21 and a second motor 22. The bracket 24 is fixed in the housing 1 and can serve as a support structure of the buffering assembly 2. The swing piece 21 is swingably mounted on the bracket 24. The second motor 22 is arranged on the bracket 24 and is in transmission connection with the swing piece 21, and is used to drive the swing piece 21 to swing.

[0071] The bracket 24 includes two mounting plates 241, which are oppositely arranged along the length direction a and are respectively located on both sides of the conveying direction of the film material 100.

[0072] The swing piece 21 is swingably mounted on at least one mounting plate 241.

[0073] In some embodiments, the swing piece 21 can be a plate body structure in a grid shape. The swing piece 21 has a powder leakage hole 213, which can reduce the friction between the swing piece 21 and the film material 100, and the excess hot melt adhesive powder scattered downward by the powdering assembly 3 or the hot melt adhesive powder shaken off from the film material 100 can fall from the powder leakage hole 213 and be recycled and processed.

[0074] The swing piece 21 is arranged opposite to the feeding port 11. After the film material 100 enters the baking equipment 01 from the feeding port 11, it will be conveyed to the swing piece 21. The swing piece 21 is arranged on the bracket 24 and can swing relative to the bracket 24. The swing piece 21 can swing within a range between a first position and a second position. The swing piece 21 has a slope rising feeding surface 211. When the swing piece 21 is in the first position, the two ends of the feeding surface 211 are respectively close to the feeding port 11 and the conveying assembly 4. When the swing piece 21 is in the second position, the feeding surface 211 has a spacing space with the feeding port 11. The first position can be the maximum height that the swing piece 21 can reach when it swings upward, and the second position can be the swing zero position of the swing piece 21. In other embodiments, the swing piece 21 can also swing beyond the first position and the second position.

[0075] Specifically, in the initial state, the swing member 21 is in the second position, when the film material 100 enters the buffer assembly 2 from the feeding port 11, the swing member 21 swings upward to the first position, the two ends of the swing member 21 can be close to the feeding port 11 and the conveying assembly 4 respectively, at this time the film material 100 can pass through the feeding surface 211 of the swing member 21, the refrigerator conveying assembly 4 conveys, and is fixed on the conveying assembly 4. After the film material 100 is fixed on the conveying assembly 4, the swing member 21 can swing downward to the second position, the conveying assembly 4 does not produce tensioning effect on the film material 100, and the film material 100 will be pressed downward to form an arc under the action of gravity.

[0076] As shown in Figure 7 , the feeding surface 211 includes a first conveying sub-surface 2112 and a second conveying sub-surface 2111 connected. The first conveying sub-surface 2112 and the second conveying sub-surface 2111 are both curved surfaces. The first conveying sub-surface 2112 is closer to the feeding port 11 than the second conveying sub-surface 2111, the tangent angle of the first conveying sub-surface 2112 gradually increases, and the tangent angle of the second conveying sub-surface 2111 gradually decreases. The first conveying sub-surface 2112 and the second conveying sub-surface 2111 form the curved surface described above, which can to some extent make the film material 100 more smoothly pass through the buffer assembly 2 to the conveying assembly 4.

[0077] As shown in Figure 3 and Figure 6 , the swing member 21 is arranged between two mounting plates 241 and can rotate relative to the mounting plates 241. The mounting plates 241 are provided with connecting holes, and one end of the swing member 21 is rotatably connected to the connecting hole in one of the mounting plates 241 through a shaft body. The output shaft of the second motor 22 penetrates the connecting hole of the other mounting plate 241 and is in transmission connection with the other end of the swing member 21, so as to realize the rotation of the swing member 21. Further, the second motor 22 is connected to the end of the swing member 21 along the conveying direction, so that the swing member 21 can realize a larger swing amplitude.

[0078] As shown in Figure 3 , the buffer assembly 2 includes a first sensor 27 arranged behind the swing member 21 along the conveying direction, for detecting whether the film material 100 reaches the conveying assembly 4. When the first sensor 43 detects that the film material 100 is connected from the buffer assembly 2 to the conveying assembly 3, the second motor 22 controls the swing member 21 to swing downward to the second position, so that the film material 100 is buffered at the position of the buffer assembly 2, forming a downward curved arc, avoiding the film material 100 from piling up together, so that the powder scattering assembly 3 can uniformly scatter powder on the film material 100.

[0079] The buffer assembly 2 includes a second sensor 23. The sensing direction of the second sensor 23 is towards the swing member 21, and it is used to detect the position of the swing member 21 and determine whether the swing member 21 has swung to the first position. In this embodiment, the second sensor 23 can be located on the side of the buffer assembly 2 facing the feed inlet 11. The distance between the second sensor 23 and the first position is relatively short, which improves the reaction speed of the second sensor 23.

[0080] When the swing member 21 swings to the first position, the second sensor 23 can generate an excitation signal, the second motor 22 stops rotating, and the membrane material 100 passes through the feeding surface 211 of the swing member 21 and enters the conveying assembly 4. At this time, whether 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.

[0081] like Figure 6 As shown, the buffer assembly 2 further 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 its 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.

[0082] 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 transmission assembly 4 stops conveying the film material 100, and the film material 100 droops in the buffer assembly 2 under the pushing action of the printer, forming a downward-curving 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, conveying 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 re-forms a downward-curving arc in the buffer assembly 2. This cycle repeats, realizing the automatic feeding of the film material 100.

[0083] In some embodiments, the first sensor 27, the second sensor 23, and the third sensor 26 may be photoelectric sensors or the like. The first sensor 27, the second sensor 23, and the third sensor 26 are each electrically connected to the controller 9.

[0084] In some embodiments, to further limit the swing of the swing member 21, at least one mounting plate 241 is provided with a limiting member 25. The limiting member 25 is arranged 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, so as to ensure that when the limiting member 25 swings upward, the film material 100 can be smoothly connected to the conveying assembly 4.

[0085] As shown in Figure 3 and Figure 5 In some embodiments, the conveying assembly 4 is arranged downstream of the buffering assembly 2, and is used to convey the film material 100 from the buffering assembly 2 to the baking assembly 5, and can also move the film material 100 relative to the baking assembly 5. The conveying assembly 4 can fix the two side edges of the film material 100 along the conveying direction, and through the movement of the conveying assembly 4, the film material 100 can be driven to the downstream assembly, so that the film material 100 can be conveyed without the traction of the conveying roller, so that the conveying assembly 4 can realize the conveying of the single film material 100 with a short length, improve the flexibility of the use of the baking equipment 01, and reduce the waste of the film material 100.

[0086] Figure 8 The structure schematic diagram of the conveying assembly from the first perspective of the present application is provided. Figure 9 The structure schematic diagram of the conveying assembly from the second perspective of the present application is provided.

[0087] As shown in Figure 3 , Figure 5 , Figure 8 and Figure 9 The conveying assembly 4 includes a first conveying subassembly 41, a second conveying subassembly 42, a transmission subassembly 43, and a first motor 44. The first motor 44 is drivingly connected to the transmission subassembly 43, the transmission subassembly 43 is drivingly connected to the first conveying subassembly 41 and the second conveying subassembly 42, part of the first conveying subassembly 41 is arranged on the side of the powder spraying assembly 3 away from the feeding port 11, part of the first conveying subassembly 41 is arranged below the powder spraying assembly 3 in the height direction, and the first conveying subassembly 42 surrounds at least part of the baking assembly 5. During the conveying of the film material 100 by the conveying assembly 4, the film material 100 can be transferred from the first conveying subassembly 41 to the second conveying subassembly 42.

[0088] The transmission subassembly 43 is connected to the first conveying subassembly 41 and the second conveying subassembly 42, which can reduce the use of the motor, thereby simplifying the structure of the equipment. In addition, it can also improve the precision of synchronous transmission of the first conveying subassembly 41 and the second conveying subassembly 42, thereby improving the stability of the film material 100 conveying. The first conveying subassembly 41 can convey the film material 100 to the front of the baking assembly 5, and the second conveying subassembly 42 can convey the film material 100 around the baking assembly 5, so as to fully utilize the baking area of the baking assembly 5 and achieve more sufficient baking of the film material 100. At the same time, by arranging the position of the first conveying subassembly 41, the space is fully utilized, and the volume of the baking equipment 01 is reduced.

[0089] Further, in some embodiments, the first conveying subassembly 41 includes two first conveying modules 411 and a first transmission member 412 arranged at intervals along the length direction a. The first transmission member 412 is connected to the two first conveying modules 411, and the first transmission member 412 can realize synchronous transmission of the two first conveying modules 411, and the two first conveying modules 411 can support both ends of the film material 100.

[0090] For example, the first conveying module 411 includes a first synchronous belt and a plurality of first transmission wheels. The first synchronous belt can be engaged with the plurality of first transmission wheels. The plurality of first transmission wheels can be arranged to form a polygon, and the plurality of first transmission wheels can support and drive the first synchronous belt to move. The first transmission member 412 can extend along the length direction a and be connected to one of the first transmission wheels of the two first conveying modules 411. The first transmission member 412 can be a transmission shaft, and the first transmission wheels of the two first conveying modules 411 can be fixed at both ends of the transmission shaft in the axial direction. One of the first transmission wheels of one of the first conveying modules 411 can be connected to the transmission subassembly 43 and move under the transmission of the transmission subassembly 43.

[0091] Further, in some embodiments, the second conveying subassembly 42 includes two second conveying modules 421 and a second transmission member 422 arranged at intervals along the length direction a. The second transmission member 422 is connected to the two second conveying modules 421, and the second transmission member 422 can realize synchronous transmission of the two second conveying modules 421, and the two second conveying modules 421 can support both ends of the film material 100.

[0092] The second conveying module 421 comprises a second synchronous belt and a plurality of second transmission wheels, and the second synchronous belt is engaged with the plurality of second transmission wheels. The plurality of second transmission wheels enclose a polygon, and the plurality of second transmission wheels can support and drive the second synchronous belt to move. The second transmission member 422 extends along the length direction a and is drivingly connected to one second transmission wheel in each of the two second conveying modules 421. The second transmission member 422 can be a transmission shaft, and one second transmission wheel in each of the two second conveying modules 421 is fixed at the two ends of the transmission shaft in the axial direction. One second transmission wheel in one of the second conveying modules 421 is connected to the transmission subassembly 43 and moves under the driving of the transmission subassembly 43.

[0093] Referring to Figure 10 , the conveying assembly 4 further comprises a guide portion 45 arranged between the first conveying subassembly 41 and the second conveying subassembly 42. The guide portion 45 is used to guide the film material 100 from the first conveying subassembly 41 to the second conveying subassembly 42, so as to realize the transfer of the film material 100.

[0094] As shown in Figure 5 , in some embodiments, the first conveying subassembly 41 further comprises a first limiting member 413 arranged outside the first conveying module 411 and used to limit the film material 100 from separating from the first conveying module 411. For example, the first limiting member 413 can be a guide rail, and the guide rail can wrap at least part of the first conveying module 411.

[0095] The second conveying subassembly 42 further comprises a second limiting member 423 arranged outside the second conveying module 421 and used to limit the film material 100 from separating from the second conveying module 421. For example, the second limiting member 423 can be a guide rail, and the guide rail can wrap at least part of the second conveying module 421.

[0096] A first gap is formed between the first limiting member 413 and the first conveying module 411, and the width of the first gap is adapted to the thickness of the film material 100. The film material 100 can move along the first gap, and it can be ensured that the film material 100 does not separate from the first conveying module 411. A second gap is formed between the second limiting member 423 and the second conveying subassembly 42, and the width of the second gap is adapted to the thickness of the film material 100. The film material 100 can move along the second gap, and it can be ensured that the film material 100 does not separate from the second conveying subassembly 42.

[0097] The first conveying subassembly 41 and the second conveying subassembly 42 are close to each other on the side of the baking assembly 5 facing the powdering assembly 3, and the guide portion 45 is formed at the position area where the first conveying subassembly 41 and the second conveying subassembly 42 are close to each other.

[0098] The guide portion 45 comprises a second guide portion 452. The second guide portion 452 is formed on a side of the second limiting member 423 close to the first conveying subassembly 41. The second guide portion 452 is formed with an inclined surface facing the first conveying subassembly 41, which can guide the film 100 to transfer from the first conveying module 411 to the second conveying module 421. The second limiting member 423 can abut or be close to abutting the first conveying module 411, and the second guide portion 452 is formed on the part of the second limiting member 423 abutting or opposite to the first conveying module 411.

[0099] 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 film 100 to a position close to the second conveying module 421, and the second conveying module 421 rotates counterclockwise. In this way, under the rotation of the first conveying module 411 and the second conveying module 421 and the action of the second guide portion 452, the film 100 can be transferred at the position where the first conveying module 411 and the second conveying module 421 are close to each other, so as to transfer the film 100 from the first conveying module 411 to the second conveying module 421.

[0100] In some embodiments, the guide portion 45 further comprises a first guide portion 451. The first guide portion 451 is located on a side of the first limiting member 413 close to the second conveying subassembly 42, and the first guide portion 451 is arranged in a staggered manner with the second guide portion 452. The first guide portion 451 is formed with an inclined surface extending towards the second conveying subassembly 42, which can guide the film 100 to gradually separate from the first driving member 412.

[0101] The conveying assembly 4 is provided as the first conveying subassembly 41 and the second conveying subassembly 42, which can optimize the conveying direction of the conveying assembly 4 in a limited space, reduce the frequency of the transmission angle change of the single-stage driving member, improve the stability of the film 100 conveying, facilitate the layout of the positions of the components, and improve the compactness of the overall structure, thereby reducing the volume of the overall machine.

[0102] In some embodiments, the first limiting member 413 close to the buffer assembly 2 is further provided with a third guide portion 4131, which can be upwardly curved, for guiding the film 100 entering the conveying assembly 4, so that the film 100 entering the third guide portion 4131 can gradually approach the first driving member 412, thereby being connected to the conveying assembly 4 and moving with the conveying assembly 4. The third guide portion 4131 can have a guide curved surface or a guide inclined surface, and the tangent angle of the guide curved surface can gradually decrease.

[0103] In some embodiments, the first sensor 43 is arranged at the third guide portion 4131 to detect whether the film material 100 is transferred from the buffer assembly 2 to the conveying assembly 4. When the first sensor 43 detects that the film material 100 is transferred from the buffer assembly 2 to the conveying assembly 4, the second motor 22 controls the swing member 21 to swing downward to the zero position, so that the film material 100 forms a downward curved arc at the position of the buffer assembly 2, facilitating the powdering assembly 3 to sprinkle powder on the film material 100.

[0104] As shown in Figure 5 and Figure 8 In some embodiments, the transmission subassembly 43 further comprises a first gear 431, a second gear 432 and a third gear 433. The first gear 431 is arranged between the second gear 432 and the third gear 433. The first gear 431 is engaged with the second gear 432 and the third gear 433 respectively. The first gear 431 is in transmission connection with one of the first conveying modules 411 in the first conveying subassembly 41, so as to drive the first conveying module 411 to rotate synchronously. The rotation direction of the first gear 431 is the same as that of the first conveying module 411, so that the first conveying module 411 drives the film material 100 to gradually approach the second conveying subassembly 42. The second gear 432 is in transmission connection with one of the second conveying modules 421 in the second conveying subassembly 42, so as to drive the second conveying module 421 to rotate synchronously. The third gear 433 is in transmission connection with the first motor 42. In the above, the transmission precision is improved by the transmission of the transmission subassembly 43, and multiple motors are not required to drive the first conveying subassembly 41 and the second conveying subassembly 42 respectively.

[0105] Figure 10 is an enlarged view of the C area in Figure 9

[0106] In some embodiments, the conveying assembly 4 is provided with a first matching portion 46. The first matching portion 46 is used to match with a second matching portion (not shown in the figure) on the film material 100, so as to fix the film material 100 on the conveying assembly 4.

[0107] In some embodiments, the two first conveying modules 411 are provided with the first matching portion 46. The second matching portion is arranged on the two side edges in the width direction of the film material 100. The first matching portion 46 matches with the second matching portion. In this way, the film material 100 can be fixed on the conveying assembly 4 through the connection of the first matching portion 46 and the second matching portion. The two second conveying modules 421 are also provided with the first matching portion 46, so as to fix the film material 100 on the second conveying module 421.

[0108] As shown in Figure 5 , Figure 9 and Figure 10 ​As shown, in some embodiments, the first matching part 46 is provided with a plurality of first matching parts 46 on the first conveying module 411, and the plurality of first matching parts 46 are arranged at equal intervals. The first matching part 46 is provided as a boss, and the second matching part is provided as a fixing hole. The second matching part is provided with a plurality of fixing holes arranged at equal intervals. The distance between two adjacent second matching parts is equal to the distance between two adjacent first matching parts 46. The fixing hole on the film material 100 can be arranged in the boss to be fixed on the conveying assembly 4. The boss is provided with a plurality of bosses distributed at equal intervals along the length direction of the conveying. One film material 100 can be fixed on the plurality of bosses to improve the fit between the film material 100 and the conveying assembly 4. The plurality of first matching parts 46 arranged at equal intervals makes the film material 100 not need to be fixed to a specific position of the first conveying module 411. The plurality of first matching parts 46 can also be arranged at equal intervals on the second conveying module 421.

[0109] Further, in order to facilitate the film material 100 to be sleeved on the boss, the diameter of the boss can be gradually reduced from the fixed position outward. For example, the boss can be provided as a conical shape.

[0110] The fixing hole on the film material 100 can be provided as a waist-shaped hole, which can further facilitate the film material 100 to be fixed on the boss. In other embodiments, the fixing hole can also be a circular hole.

[0111] As shown in FIGS. Figure 5 and Figure 8 As shown in other embodiments, the conveying assembly 4 includes a code disc 47 and a sixth sensor 48. The code disc 47 is provided with a circumferential code track, and the code track is divided into a plurality of regions with equal size. The time for the code disc 47 to rotate through each region of the code track is equal to the time required for the film material 100 to move between two adjacent bosses. The rotation track of the code disc 47 is within the detection range of the sixth sensor 48, and the sixth sensor 48 is used to detect the rotation distance of the code disc 47.

[0112] In some embodiments, the sixth sensor 48 can be an optical sensor.

[0113] The code disc 47 is connected with the first conveying subassembly 41 and the second conveying subassembly 42 through the transmission subassembly 43. Specifically, the code disc 47 is coaxially arranged with the first gear 431, the first gear 431, the second gear 432 and the third gear 433 have the same rotating radius, the sixth sensor 48 is arranged on one side of the code disc 47 and is used for detecting the rotating distance of the code disc 47. When the code track of the code disc 47 passes through the sixth sensor 48, the sixth sensor 48 generates an excitation signal. Each region on the code track can correspond to a plurality of first matching parts 46 respectively, the position of the code track on the code disc 47 is detected through the sixth sensor 48, and then it is judged whether the first matching part 46 moves to the connection position, so as to control the conveying of the film material 100, and the second matching part on the film material 100 is matched with the first matching part 46, so as to be accurately fixed on the first transmission subassembly 41.

[0114] Figure 11 For Figure 3 the B area is enlarged.

[0115] As Figure 3 , Figure 5 and Figure 11 shown, the powder scattering assembly 3 includes a powder scattering mechanism 31, a powder storage mechanism 32 and a powder circulation mechanism 33. The powder scattering mechanism 31 is arranged above the buffer assembly 2 and is used for scattering hot melt adhesive powder to the film material 100 located on the buffer assembly 2. When the swing piece 21 swings downward to the second position, the film material 100 forms a downward curved arc, and at this time, the powder scattering mechanism 31 scatters hot melt adhesive powder to the film material 100, which can make the hot melt adhesive powder more evenly distributed on the surface of the film material 100 and better cover the pattern.

[0116] The powder storage mechanism 32 is used for storing hot melt adhesive powder. The powder storage mechanism 32 is arranged below the powder scattering mechanism 31, and the powder storage mechanism 32 is formed with a powder recycling port 3215 facing the powder scattering mechanism 31.

[0117] The powder circulation mechanism 33 is at least partially arranged in the powder storage mechanism 32 and opposite to at least part of the powder scattering mechanism 31, and is used for circulating movement between the powder scattering mechanism 31 and the powder storage mechanism 32, carrying part of the hot melt adhesive powder in the powder storage mechanism 32, and transferring at least part of the part of the hot melt adhesive powder to the powder scattering mechanism 31.

[0118] Figure 12 The structure schematic diagram of the powder scattering mechanism provided in the present application.

[0119] As Figure 3 , Figure 11 and Figure 12As shown, further, the powdering mechanism 31 comprises a powdering bin 311, a powdering roller 313 and a third motor 314. The powdering bin 311 is arranged above the buffer assembly 2, and both ends of the powdering bin 311 are fixed to the support 24. The powdering roller 313 is arranged in the powdering port and extends along the length direction of the powdering port, one end of the powdering roller 313 is rotatably connected to one of the mounting plates 241, and the output shaft of the third motor 314 penetrates through the other mounting plate 241 and is in transmission connection with the other end of the powdering roller 313, for driving the powdering roller 313 to rotate, so as to carry the hot-melt adhesive powder in the powdering bin 311 out of the powdering port and sprinkle it downward to the film material 100.

[0120] The powdering bin 311 is used for storing the hot-melt adhesive powder transferred from the powder storage mechanism 32 by the powder circulating mechanism 33. The inner diameter of the powdering bin 311 gradually decreases from top to bottom, and the cross section thereof is generally in the shape of V, so that the hot-melt adhesive powder in the powdering bin 311 can better slide to the bottom of the powdering bin 311. The bottom of the powdering bin 311 is provided with a powdering port, so as to facilitate the hot-melt adhesive powder to be discharged from the powdering port. The powdering port extends along the length of the powdering bin 311. It can be understood that the length of the powdering port is not less than the width of the film material 100, so as to ensure that the hot-melt adhesive powder can cover each position on the width of the film material 100.

[0121] In order to improve the strength of the powdering bin 311, a plurality of reinforcing ribs 3111 are arranged in the powdering bin 311 at intervals. The reinforcing ribs 3111 are respectively connected with the two side walls in the length direction of the powdering bin 311.

[0122] In some embodiments, the powdering mechanism 31 is linked with the printer 02, after the film material 100 reaches a specific position, the third motor 314 is controlled to rotate for a certain time, so as to ensure that a sufficient amount of hot-melt adhesive powder is sprinkled, and then the third motor 314 is stopped to rotate, so as to accurately control the landing point of the hot-melt adhesive powder on the film material 100. The powdering amount can be adjusted by the printing parameters, such as the number of PASS, the picture size, etc.

[0123] Figure 13 The structure schematic diagram of the powdering roller provided in the present application is shown.

[0124] As Figure 12 and Figure 13As shown, the powdering roller 313 is arranged in the powdering opening and extends along the length direction of the powdering opening. The third motor 314 is in driving connection with the powdering roller 313 and is used to drive the powdering roller 313 to rotate, so as to sprinkle the hot melt adhesive powder in the powdering bin 311 out of the powdering opening and onto the film material 100. The surface of the powdering roller 313 is provided with at least one powder groove 3131, which can be used to carry the hot melt adhesive powder. The powder groove 3131 extends along the axial direction of the powdering roller 313. When the powdering roller 313 rotates, the powder groove 3131 can carry the hot melt adhesive powder in the powdering bin 311 out of the powdering opening, so as to improve the uniformity of the hot melt adhesive powder sprinkled on the film material 100.

[0125] As shown, Figure 13 In some embodiments, the circumferential surface of the powdering roller 313 is provided with a plurality of powder grooves 3131, which are uniformly distributed along the circumferential direction, so as to improve the powdering efficiency.

[0126] As shown, Figure 11 and Figure 12 In some embodiments, the powdering mechanism 31 further comprises a powder scraping piece 315. The powder scraping piece 315 is arranged in the area of the powdering bin 315 close to the powdering opening and is in contact with the powdering roller 313, so as to scrape the hot melt adhesive powder in the powder groove 3131 into the powdering opening when the powdering roller 313 rotates.

[0127] In some embodiments, the powder scraping piece 315 is configured with two powder scraping pieces 315, which are arranged at the two ends of the powdering opening respectively and face in opposite directions and are located on the two sides of the powdering roller 313 in the radial direction and abut against the powdering roller 313.

[0128] The two powder scraping pieces 315 are located on the two sides of the powdering roller 313 in the axial direction and the distance between the two powder scraping pieces 315 is not greater than the width of the powdering roller 313. When the powdering roller 313 rotates, the two powder scraping pieces 315 can sweep the hot melt adhesive powder on the powder groove 3131 out, so that the hot melt adhesive powder can fall onto the film material 100.

[0129] The two powder scraping pieces 315 are arranged in opposite directions and the inclination directions thereof are opposite to the rotating direction of the powdering roller 313, so that when the powdering roller 313 rotates, the two powder scraping pieces 315 can be inserted into the powder groove 3131 and can effectively carry the hot melt adhesive powder in the powder groove 3131 out in the opposite direction of the rotating direction of the powdering roller 313. For example, the powdering roller 313 rotates counterclockwise, one of the powder scraping pieces 315 is arranged in front of the powdering roller 313 and is arranged in a downward inclination direction, and the other powder scraping piece 316 is arranged behind the powdering roller 313 and is arranged in an upward inclination direction.

[0130] In some embodiments, the powder scraping member 315 is a brush, which includes a soft part in contact with the powdering roller 313, and the soft part can be deformed with the rotation of the powdering roller 313, so as to scrape the hot melt adhesive powder in the powder groove 3131. In other embodiments, the powder scraping member 315 can also be an element made of other soft materials, such as a silica gel strip.

[0131] Figure 14 A structural schematic diagram of the powdering assembly provided in the present application.

[0132] As shown in Figure 3 , Figure 6 and Figure 14 , the powder storage mechanism 32 has a powder recovery cavity 321a1 in communication. The powder recovery cavity 321a1 is closer to the powdering mechanism 31 than the powder storage cavity 321b1, the powdering mechanism 31 is correspondingly arranged above the powder recovery cavity 321a1, and the buffer assembly 2 is at least partially arranged in the powder recovery cavity 321a1 and can swing in the powder recovery cavity 321a1. The powdering mechanism 31 is correspondingly arranged above the powder recovery cavity 321a1, and the buffer assembly 2 is at least partially arranged in the powder recovery cavity 321a1 and can swing in the powder recovery cavity 321a1, so that when the powdering assembly 3 spreads the hot melt adhesive powder on the film material 100, the excess powder can enter the powder recovery cavity 321a1, the powder recovery cavity 321a1 is in communication with the powder storage cavity 321b1, and the hot melt adhesive powder collected in the powder recovery cavity 321a1 can directly fall into the powder storage cavity 321b1, without the need for frequent cleaning, thereby improving the use experience.

[0133] The powder storage mechanism 32 includes a powder storage bin 321 and a powder adding bin 322. The powder storage bin 321 is arranged below the buffer assembly 2, the powder adding bin 322 is arranged in the upper part of the powder storage bin 321, can rotate along the powder storage bin 321, and can be pulled out of the powder storage bin 321 to perform powder adding operation.

[0134] The powder storage bin 321 can be used to store hot melt adhesive powder. The powder recovery cavity 321a1 and the powder storage cavity 321b1 are formed in the powder storage bin 321. The powder storage bin 321 is formed with an upward powder recovery opening 3215, the powder recovery opening 3215 is in communication with the powder recovery cavity 321a1 and the first receiving cavity 16, and the excess hot melt adhesive powder on the film material 100 or the hot melt adhesive powder falling from the powdering mechanism 31 can be recovered into the powder storage bin 321 through the powder recovery opening 3215, thereby facilitating the recycling of the hot melt adhesive powder.

[0135] The upper part of the powder storage bin 321 is V-shaped, that is, the cross section of the upper part of the powder storage bin 321 gradually increases from bottom to top, so that not only can the powder recovery opening 3215 be large enough to receive the hot melt adhesive powder falling from the powdering mechanism 31, but also the recovered hot melt adhesive powder can quickly slide down along the inclined side wall of the powder storage bin 321 to the bottom of the powder storage bin 321.

[0136] The powder storage bin 321 comprises a powder recovery part 321a and a powder storage part 321b, the powder recovery part 321a is arranged above the powder storage part 321b, the upper end of the powder recovery part 321a forms a powder recovery opening 3215, and the bin width of at least part of the powder recovery part 321a and the bin width of at least part of the powder storage part 321b gradually decrease from top to bottom. In this way, when the hot melt adhesive powder capacity is small, it can also be easily transferred. The powder recovery cavity 321a1 is formed in the powder recovery part 321a; the powder storage cavity 321b1 is formed in the powder storage part 321b.

[0137] Further, a grid 325 is arranged at a position close to the powder recovery opening 3215 in the powder storage bin 321. By arranging the grid 325, the hot melt adhesive powder in the powder storage bin 321 can be prevented from being taken away by the airflow generated by the swinging of the swinging part 21 when there is too much hot melt adhesive powder in the powder storage bin 321.

[0138] The powder adding bin 322 has a powder discharge opening, through which the hot melt adhesive powder in the powder adding bin 322 can be poured into the powder storage bin 321.

[0139] Figure 15 The second perspective view of the structure of the baking equipment provided in the present application is shown.

[0140] As shown in Figure 3 and Figure 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 arranged in the first through hole 3214.

[0141] Figure 16 The internal structure diagram of the powder scattering assembly provided in the present application is shown. Figure 17 The second perspective view of the structure of the powder scattering assembly provided in the present application is shown. Figure 18 The Figure 17 sectional view along the E-E direction is shown.

[0142] As shown in Figure 16 to Figure 18 , a third limiting protrusion 3222 is formed on the side wall of the powder adding bin 322, and the protruding direction of the third limiting protrusion 3222 is consistent with the direction of the powder discharge opening of the powder adding bin 322. A first gap 32141 is formed on the upper part of the first through hole 3214, and the third limiting protrusion 3222 and the first gap 32141 correspond and fit.

[0143] The inner wall of the powder storage bin 321 is formed with a first limiting protrusion 3212 and a second limiting protrusion 3213 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. The powder adding bin 322 has a first position and a second position relative to the powder storage bin 321. When the powder adding bin 322 is in the first position, the first gap 32141 is arranged corresponding to the third limiting protrusion 3222, and the third limiting protrusion 3222 abuts against the first limiting protrusion 3212. When the powder adding bin 322 is rotated to abut against the first limiting protrusion 3212, the opening of the powder adding groove 3221 faces downward, and the powder adding bin 322 can be pulled out of the powder storage bin 321. When the powder adding bin 322 is in the second position, the third limiting protrusion 3222 abuts against the second limiting protrusion 3213, and at this time, the powder discharging port of the powder adding bin 322 faces downward, and the hot melt adhesive powder in the powder adding bin 322 can be transferred to the powder storage bin 321.

[0144] In some embodiments, the first limiting protrusion 3212 and the second limiting protrusion 3213 are arranged at the two ends of the first through hole 3214 in the radial direction, and the second limiting protrusion 3213 limits the third limiting protrusion 3222 at the bottom of the first through hole 3214. In this way, when the powder adding bin 322 is poured with hot melt adhesive powder into the powder storage bin 321, the powder discharging port of the powder adding bin 322 faces downward, ensuring that the hot melt adhesive powder in the powder adding bin 322 can be completely poured into the powder storage bin 321.

[0145] When adding hot melt adhesive powder, the powder adding bin 322 is rotated to the position where the third limiting protrusion 3222 abuts against the first limiting protrusion 3212, the powder adding bin 322 is pulled out, hot melt adhesive powder is added into the powder adding bin 322, the powder adding bin 322 is inserted into the powder storage bin 321, and the powder adding bin 322 is rotated to pour the hot melt adhesive powder in the powder adding bin 322 into the powder storage bin 321. Repeat the operation until the powder adding operation is completed.

[0146] The powder storage bin 321 is further provided with a sleeve 3216. 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 adding bin 322, which can support the powder adding bin 322 and make the powder adding bin 322 rotate more smoothly.

[0147] The powder storage bin 321 is provided with a fourth sensor 323. The fourth sensor 323 can detect the capacity of the hot melt adhesive powder in the powder storage bin 321. When the capacity of the hot melt adhesive powder in the powder storage bin 321 is lower than a certain height, the fourth sensor 323 will issue an alarm to prompt powder adding.

[0148] Further, the fourth sensor 323 can be provided with multiple sensors at different heights in the powder storage bin 321 to form different powder adding signals.

[0149] AsFigure 15 As shown, further, the housing 1 is formed with a powder adding opening 12, the powder adding opening 12 and the powder adding bin 322 are oppositely arranged, and the powder adding bin 322 is taken out through the powder adding opening 12. The powder adding opening 12 is covered by the oil adding cover body 6, so as to close the powder adding opening 12 and prevent the powder adding bin 322 from being touched by mistake.

[0150] The powder adding cover body 6 can be movably connected with the housing 1, or one side of the powder adding cover body 6 can be rotatably connected with the housing 1 through a connecting member. The outer wall of the powder storage bin 321 is provided with a rebounding member 324, and the other side of the powder adding cover body 6 can be connected with the powder storage bin 321 through the rebounding member 324, so as to facilitate the opening and closing of the powder adding cover body 6 and facilitate the taking and placing of the powder adding bin 322.

[0151] In some embodiments, the powder adding bin 322 can add 2 kg of hot melt adhesive powder at a time, and the powder storage bin 321 can accommodate 4 kg of hot melt adhesive powder. The powder storage bin 321 has a large capacity, which can reduce the frequency of powder adding.

[0152] As shown in Figure 3 and Figure 6 The powder circulating mechanism 33 includes a powder conveying belt 331, a transmission member 335 and a driving member 332. The transmission member 335 includes a driving member 3351 and a driven member 3352, and the driving member 3351 is connected with the driving member 332. The powder conveying belt 331 is arranged around the driving member 3351 and the driven member 3352, and moves in a ring shape under the action of the driving member 3351 and the driven member 3352. Part of the powder conveying belt 331 is arranged above the powder scattering mechanism 31, and part of the powder conveying belt 331 is arranged in the powder material storage mechanism 32. The powder conveying belt 331 has a powder storage space 3313, part of the hot melt adhesive powder in the powder material storage mechanism 32 can enter the powder storage space 3313, and at least part of the hot melt adhesive powder in the powder storage space 3313 can be transferred to the powder scattering mechanism 31 along with the movement of the powder conveying belt 331.

[0153] The driving member 332 is in transmission connection with the transmission member 335, so as to drive the powder conveying belt 331 to move circularly along the powder scattering mechanism 31 and the powder material storage mechanism 32, so as to convey the hot melt adhesive powder in the powder material storage mechanism 32 to the powder scattering mechanism 31, and can convey the remaining hot melt adhesive powder back to the powder material storage mechanism 32, so as to realize the powder scattering, recycling and reuse of the hot melt adhesive powder.

[0154] In some embodiments, the driving member 332 can be an electric motor. The powder storage space 3313 can be square, cylindrical, pentagonal, hexagonal, triangular, etc.

[0155] In some embodiments, the driving member 3351 can be configured as a driving wheel, the driven member 3352 can be configured as a driven wheel, and a plurality of driven wheels can be provided, the driving wheel and the plurality of driven wheels are respectively arranged on the conveying path of the powder conveying belt 331, and the driving wheel and the driven wheels are in driving connection with the powder conveying belt 331. The driven wheels can change the driving direction of the powder conveying belt 331, so that the powder conveying belt 331 can form a loop. The driving wheel and the driven wheels can be gears or pulleys.

[0156] In some embodiments, the powder storage space 3313 has at least two openings, such as two openings, or three openings, or four openings, etc. The hot melt adhesive powder can enter the powder storage space 3313 from at least one of the two openings of the powder storage space 3313, and when passing above the powder scattering mechanism 31, the hot melt adhesive powder is transferred from the two openings to the powder scattering mechanism 31. In other embodiments, the powder storage space 3313 can also have only one opening.

[0157] In some embodiments, the powder storage space 3313 is a plurality of powder storage spaces 3313, and the plurality of powder storage spaces 3313 are arranged at intervals along the extension direction of the powder conveying belt 331. Each powder storage space 3313 can carry hot melt adhesive powder, which can improve the uniformity of the hot melt adhesive powder transferred to the powder scattering mechanism 31, so that the hot melt adhesive powder can be more evenly scattered on the film material 100.

[0158] The powder conveying belt 331 includes a body 3312 and a plurality of convex bodies 3311 arranged outside the body 3312, the inner side of the body 3312 is in driving connection with the driving member 335, and the plurality of convex bodies 3311 are arranged at intervals, and adjacent two convex bodies 3311 form a powder storage space 3313. In some embodiments, the plurality of convex bodies 3311 can be an integral structure with the body 3312.

[0159] In some embodiments, the convex body 3311 is made of flexible material. For example, the convex body 3311 can be made of soft silicone, rubber, soft plastic, etc. The soft material has a certain softness, which can avoid damage caused by collision with the powder discharging member 334 during the transfer of hot melt adhesive powder, and also allows the powder discharging member 334 to smoothly discharge the hot melt adhesive powder from the powder storage space 3313.

[0160] In some embodiments, the part of the powder conveying belt 331 located in the powder storage mechanism 32 extends to the bottom of the powder storage bin 321, and the bottom of the powder storage bin 321 is formed with a groove through which the powder conveying belt 331 passes. During the circulation movement of the powder conveying belt 331, the convex body 3311 carries the hot melt adhesive powder in the powder storage bin 321 to move along the groove in the powder storage bin 321 and rise to the powder scattering bin 311.

[0161] As Figure 6 and Figure 16As shown, one side of the powder storage bin 321 is provided with a powder guide groove 3211 extending along the height direction of the powder storage bin 321, and the powder conveying belt 331 is arranged in the powder guide groove 3211 to drive the hot melt adhesive powder to rise from the powder storage bin 321 to the powder scattering bin 311.

[0162] As shown, Figure 6 The powder circulating mechanism 33 further comprises a powder discharging member 334 arranged at one side of the powder conveying belt 331 and capable of extending into the powder storage space 3313 to discharge the hot melt adhesive powder in the powder storage space 3313 to the powder scattering mechanism 31.

[0163] In some embodiments, the powder discharging member 334 is arranged above the powder scattering bin 311 of the powder scattering mechanism 31 and outside the powder conveying belt 311, and at least one powder discharging member 334 is arranged along the length direction of the powder scattering bin 311. The powder discharging member 334 is used to discharge the hot melt adhesive powder carried by the powder conveying belt 331 during the movement of the powder conveying belt 331, so that the hot melt adhesive powder falls into the powder scattering bin 311. When the powder conveying belt 331 passes through the powder scattering mechanism 31, the powder discharging member 334 can extend into the powder storage space 3313 and then leave the powder storage space 3313, thereby taking out at least part of the hot melt adhesive powder in the powder storage space 3313.

[0164] In some embodiments, the powder discharging member 334 can be in the form of a plate. The plate-shaped powder discharging member 334 has a simple structure and can scrape off the hot melt adhesive powder in the powder storage space 3313 when the powder conveying belt 331 passes through.

[0165] Since the powder circulating mechanism 33 is always in circulation, the powder discharging member 334 is arranged in the circulation path of the powder circulating mechanism 33 and can cover most of the positions of the powder circulating mechanism 33 in the powder scattering bin 311, so that the hot melt adhesive powder can be transferred to the powder scattering bin 311 more uniformly, thereby improving the uniformity of the hot melt adhesive powder attached to the film material 100. Preferably, a plurality of powder discharging members 334 are arranged along the length direction of the powder scattering bin 311, which not only enables the hot melt adhesive powder to be transferred to the powder scattering bin 311 more uniformly, but also reduces the friction between the powder discharging member 334 and the powder circulating mechanism 33.

[0166] In some embodiments, the powder discharging member 334 is arranged spaced apart from the bottom of the powder storage space 3313. For example, the powder discharging member 334 is arranged as a shakeable member, which shakes the part of the powder conveying belt 331 in the powder scattering bin 311 to make the hot melt adhesive powder on the powder storage space 3313 fall into the powder scattering bin 311. A motor can be arranged to drive the powder conveying belt 331 to shake.

[0167] In other embodiments, a structure with ups and downs can also be arranged in the powder scattering bin 311, so that when the powder circulating mechanism 33 moves to the structure, the powder circulating mechanism 33 shakes and the hot melt adhesive powder in the powder storage space 3313 falls into the powder scattering bin 311.

[0168] As shown in Figure 16 To ensure stable transmission of the powder conveying belt 331 and avoid loosening of the powder conveying belt 331, the powder circulation mechanism 33 further comprises a tensioning component 333. The tensioning component 333 is connected with the powder conveying belt 331 or the transmission component 335, and the tensioning component 333 can move the transmission component 335 or the powder conveying belt 331 to tension the powder conveying belt 331.

[0169] In one embodiment, the tensioning component 333 is arranged in the powder storage mechanism 32 and located in the conveying path of the powder conveying belt 331, the powder conveying belt 331 passes through the tensioning component 333, and the tensioning component 333 can move in the direction outside the powder conveying belt 331 to adjust the tensioning degree of the powder conveying belt 331. In some embodiments, the tensioning component 333 can comprise a tensioning wheel, which can abut against the powder conveying belt 331 to adjust the tensioning degree of the powder conveying belt 331 by adjusting the tensioning wheel.

[0170] In some embodiments, the tensioning component 333 is connected with one of the driven members 3352 in the transmission component 335 to drive the movement of the driven member 3352 and thereby tension the powder conveying belt 331.

[0171] In some embodiments, the tensioning component 333 comprises a tensioning member 3331 and a tensioning screw 3332. The tensioning member 3331 is arranged in the powder storage bin 321, the powder conveying belt 331 passes through the tensioning member 3331, and the tensioning member 3331 is rotationally connected with one of the driven members 3352 of the powder circulation mechanism 33. One end of the tensioning screw 3332 passes through a sidewall of the powder storage bin 321 and is connected with the tensioning member 3331. By adjusting the length of the tensioning screw 3332 screwed into the powder storage bin 321, the tensioning degree of the powder conveying belt 331 can be adjusted to ensure normal operation of the powder conveying belt 331.

[0172] Specifically, the tensioning member 3331 is in the shape of U and has an opening facing the powder conveying belt 331. One of the driven members 3352 of the transmission component 335 is fixed to the opening end of the tensioning member 3331 through a shaft body, and the tensioning screw 3332 is fixed to the end opposite to the opening. A waist-shaped hole is arranged on the powder storage bin 321, which extends along the movement direction of the tensioning screw 3332 and corresponds to the tensioning member 3331. The tensioning member 3331 is slidably connected to the waist-shaped hole through a connecting member. In this way, when the tensioning screw 3332 is rotated, the tensioning member 3331 can slide along the waist-shaped hole to adjust the tensioning degree of the powder conveying belt 331.

[0173] As shown in Figure 14 and Figure 16As shown, the powdering assembly 3 further comprises a powder shaking mechanism 34. The powder shaking mechanism 34 is arranged between the powdering mechanism 31 and the powder storage mechanism 32 and located in the conveying path of the film material 100. The powder shaking mechanism 34 is located downstream of the powdering mechanism 31. The powder shaking mechanism 34 can intermittently shake the film material 100 after the powdering of the hot melt adhesive powder, so as to shake off the hot melt adhesive powder on the film material 100 that is not adhered. By shaking the film material 100 after the powdering through the powder shaking mechanism 34, the uniformity of the hot melt adhesive powder on the film material 100 can be improved.

[0174] The powder shaking mechanism 34 comprises a fifth motor 341, a rotating shaft 342, and at least one shaking piece 343 arranged on the rotating shaft 342. One end of the rotating shaft 342 is rotatably arranged on the bracket 24, and the fifth motor 341 is fixedly arranged on the bracket 24. The fifth motor 341 is in transmission connection with the other end of the rotating shaft 342, and is used to drive the rotating shaft 342 to rotate. The shaking piece 343 is arranged on the rotating shaft 342 and extends in the radial direction of the rotating shaft 342. When the rotating shaft 342 rotates, the shaking piece 343 can rotate to the back surface of the film material 100 in the buffer assembly 2 and contact the back surface of the film material 100, so as to shake the film material 100. The powder shaking mechanism 34 can shake off the excess hot melt adhesive powder on the film material 100 and improve the utilization rate of the hot melt adhesive powder.

[0175] When the powder shaking mechanism 34 operates, the fifth motor 341 cyclically rotates in the forward direction and the reverse direction, so that the shaking piece 343 can generate intermittent shaking actions on the film material 100.

[0176] The fifth motor 341 can be linked with the printer 02. The conveying position of the film material 100 is estimated through the second sensor 23 and the third sensor 26. The powder is shaken when the film material 100 arrives. After the film material 100 completely enters the baking equipment 01, the powder shaking mechanism 34 stops operating.

[0177] In some embodiments, the shaking piece 343 is arranged in a plurality of shaking pieces 343. The plurality of shaking pieces 343 are arranged in the axial direction of the rotating shaft 342 and are spaced apart, so as to cover a wider range of the film material 100 and more effectively shake off the excess hot melt adhesive powder on the film material 100.

[0178] As Figure 14As shown, the powder tapping mechanism 34 is arranged on the side of the buffer assembly 2 away from the feeding port 11 and is fixed below the buffer assembly 2. The end of the swing member 21 away from the feeding port 11 is provided with an avoiding slot 214. The slot of the avoiding slot 214 is directed to the conveying direction of the film material 100. A plurality of avoiding slots 214 are arranged along the length direction of the swing member 21 in the baking equipment 01. The avoiding slots 214 are arranged correspondingly to the tapping members 343. The powder tapping mechanism 34 can rotate to insert the tapping members 343 into the avoiding slots 214 and tap the back of the film material 100 in the buffer assembly 2 to shake off the hot melt adhesive powder not adhered on the film material 100. In this way, the structure layout is more compact, which is beneficial to the miniaturization.

[0179] As shown in Figure 14 , the tapping member 343 comprises a clamping body 3431 and a flexible member 3432 fixed at the end of the clamping body 3431. The clamping body 3431 is fixed on the rotating shaft 342. The flexible member 3432 can be arranged at one end of the clamping body 3431 or at both ends of the clamping body 3431. Exemplarily, the flexible member 3432 can adopt a silica gel member which has a certain strength and can not only produce effective tapping effect on the film material 100 but also will not scratch the film material 100.

[0180] Figure 19 The structure schematic diagram of the baking assembly provided in the present application is shown. Figure 20 For Figure 19 The sectional view along the direction D-D.

[0181] As shown in Figure 3 , Figure 19 and Figure 20 , the baking assembly 5 comprises a box body 51, a heating member 52 and an exhaust structure 53. The bottom of the box body 51 is formed with a blowing port 511. The conveying assembly 4 surrounds at least part of the box body 51. At least part of the box body 51 comprises at least two surfaces. The heating member 52 is arranged in the box body 51 and is configured to generate heat. The exhaust structure 53 is in communication with the box body 51 and can be connected with an external exhaust purification device for driving the airflow in the box body 51 to flow to the external exhaust purification device.

[0182] When the film material 100 passes through the baking assembly 5, the film material 100 moves between the box body 51 and the heating member 52. The film material 100 is conveyed at least in a trajectory parallel to the three heating surfaces of the box body 51 in sequence, so that the film material 100 has a longer stroke when passing through the baking assembly 5, thereby improving the drying effect.

[0183] As shown in Figure 3 and Figure 8As shown, further, 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 disposed on the upper portion of the box 51 and is in communication with the inside of the box 51. The exhaust fan 531 includes an air inlet and an air outlet, and the air inlet is in communication with the inside of the box 51. The first exhaust pipe 532 and the second exhaust pipe 533 are respectively provided in the box 51, one end of the first exhaust pipe 532 is in communication with the air outlet of the exhaust fan 531, one end of the second exhaust pipe 533 is in communication with the other end of the first exhaust pipe 532, and the other end of the second exhaust pipe 533 is in communication with an external tail gas purification device. The inner diameter of the first exhaust pipe 532 is smaller than the inner diameter of the second exhaust pipe 533, so that Bernoulli fluid is formed in the exhaust structure 53, and the exhaust speed of the exhaust gas in the box 51 is improved.

[0184] Further, the first exhaust pipe 532 and the second exhaust pipe 533 are axially connected, the first exhaust pipe 532 and the second exhaust pipe 533 are connected in the box 51, and the non-connected ends of the first exhaust pipe 532 and the second exhaust pipe 533 are respectively provided in the opposite side walls of the box 51, which improves the compactness of the baking equipment 01 to a certain extent and reduces the volume of the baking equipment 01.

[0185] The heating element 52 is at least configured to be provided in the box 51, and is used to dry the film material 100 passing through the baking assembly 5.

[0186] The heating element 52 can be provided in multiple, and the multiple heating elements 52 are distributed along the height direction of the box 51. The heating element 52 is distributed along the height direction, which reduces the volume of the whole machine to a certain extent.

[0187] The multiple heating elements 52 can be uniformly or non-uniformly distributed, and each heating element 52 can be configured to have the same power or different power, which can be determined according to the pattern or material to be dried.

[0188] As shown in Figure 19 and Figure 20 In some embodiments, the exhaust structure 53 further includes a first fan 54 disposed at the bottom of the box 51 and capable of blowing air into the box 51. By blowing air into the box 51 through the first fan 54, the flow speed of the gas in the box 51 can be accelerated, and the flying up generated in the box 51 can be more quickly exhausted to the external tail gas purification device through the first exhaust pipe 532 and the second exhaust pipe 533.

[0189] As shown in Figure 8 and Figure 20As shown, in order to prevent the membrane material 100 from being damaged by the heating element 52, the baking assembly 5 also includes an isolation box 55. The heating element 52 is disposed in the isolation box 55, so that the heating element 52 is isolated from the membrane material 100, and the membrane 100 is prevented from being damaged by the heating element 52 when passing through the baking assembly 5.

[0190] In some embodiments, the walls of the isolation box 55 are mesh-like. The mesh structure of the isolation box 55 does not affect the heating effect of the heating element 52, so that the heat generated by the heating element 52 can be evenly distributed to the outside of the isolation box 55 to dry the membrane material 100 and ensure the drying effect of the membrane material 100.

[0191] In other embodiments, the wall of the isolation chamber 55 may also be provided with multiple through holes, through which the heat generated by the heating element 52 can be dissipated to the outside of the isolation chamber 55 to dry the membrane material 100.

[0192] like Figure 20 As shown, furthermore, to 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 outer wall of the housing 51 is provided with an insulation layer 512 and a heat-insulating material layer 513. The insulation layer 512 is disposed inside the heat-insulating material layer 513. Providing the insulation layer 512 and the heat-insulating material layer 513 on the side wall of the housing 51 improves the heat insulation effect between the inner and outer sides of the housing 51.

[0193] In some embodiments, the insulation layer 512 may be an aluminum foil layer. Aluminum foil has the ability to reflect heat and has a long-lasting thermal insulation function, which can reflect some heat back into the housing 51, reduce heat transfer, and has a long service life.

[0194] Furthermore, a mirror layer 514 is formed on the inner wall of the housing 51. The mirror layer 514 is disposed on the inner side of the insulation layer 512 and the heat insulation material layer 513. The mirror layer 514 generates heat radiation to the hot air, thereby reducing heat loss.

[0195] In this embodiment, 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, which are arranged side by side along the bottom of the housing 51 to meet the gas circulation requirements inside the housing 51.

[0196] Furthermore, to prevent the second transmission module 421 from overheating and affecting its service life, multiple cooling fans are connected to the outside of the housing 51. 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.

[0197] To sum up, the application sets part of the powder conveying belt above the powder spraying mechanism, and part of the powder conveying belt is arranged in the powder storage mechanism. The driving member drives the transmission component to drive the powder conveying belt to move circularly in the powder spraying mechanism and the powder storage mechanism, so that the hot melt adhesive powder in the powder storage mechanism can be transferred to the powder spraying mechanism, the automatic feeding of the hot melt adhesive powder in the powder spraying mechanism is realized, the limitation on the storage amount of the hot melt adhesive powder is reduced, and the frequency of adding the hot melt adhesive powder is reduced. The unused hot melt adhesive powder can be automatically recycled and reused through the powder conveying belt after being recycled, and the labor cost is reduced. In addition, the transmission component is in transmission connection with the powder conveying belt, and the rotation direction of the powder conveying belt is changed, so that the distribution of the powder conveying belt is optimized, and the compactness of the setting is improved.

[0198] It can be understood that, for those skilled in the art, equivalent replacements or changes can be made according to the technical solutions and the application concept of the application, and all these changes or replacements shall belong to the protection scope of the claims attached to the application.

Claims

1. A powder circulating mechanism characterized by comprising: A powder circulating mechanism for conveying hot-melt adhesive powder in a powder storage mechanism to a powder scattering mechanism, the powder circulating mechanism comprising: a driving member; a transmission member comprising a driving member and a driven member, the driving member being connected to the driving member; a powder conveying belt, the powder conveying belt being arranged around the driving member and the driven member to move in a loop under the driving member and the driven member, part of the powder conveying belt being arranged above the powder scattering mechanism and part of the powder conveying belt being arranged in the powder storage mechanism, the powder conveying belt having a powder storage space, part of the hot-melt adhesive powder in the powder storage mechanism being able to enter the powder storage space, at least part of the hot-melt adhesive powder in the powder storage space being able to be transferred to the powder scattering mechanism with the movement of the powder conveying belt.

2. The powder circulation mechanism according to claim 1, characterized by, the powder storage space has at least two openings; and / or a plurality of the powder storage spaces are arranged at intervals along the extension direction of the powder conveying belt.

3. The powder circulation mechanism according to claim 1, characterized by, the powder conveying belt comprises: a body, the inner side of the body being arranged at the transmission member; a plurality of convex bodies, the plurality of convex bodies being arranged at intervals on the outer side of the body, and adjacent two of the convex bodies forming one of the powder storage spaces.

4. The powder circulation mechanism according to claim 3, characterized by the convex bodies are made of flexible material.

5. The powder circulation mechanism according to claim 1, wherein the powder circulating mechanism further comprises: a powder discharging member arranged at one side of the powder conveying belt and being able to extend into the powder storage space to discharge the hot-melt adhesive powder in the powder storage space to the powder scattering mechanism.

6. The powder circulation mechanism according to claim 5, characterized by a plurality of the powder discharging members are arranged at intervals along the powder conveying belt, and the plurality of the powder discharging members are able to respectively extend into a plurality of the powder storage spaces; and / or the powder discharging member is in the form of a plate; and / or the powder discharging member is arranged at intervals from the bottom of the powder storage space.

7. A powder circulating mechanism according to any one of claims 1 to 6, characterized in that the powder circulating mechanism further comprises: a tensioning member, the tensioning member being connected to the powder conveying belt or the transmission member, the tensioning member being able to move the transmission member or the powder conveying belt to tension the powder conveying belt.

8. The powder circulation mechanism according to claim 7, characterized by one of the driven members is arranged at the tensioning member.

9. A toasting apparatus characterised in that, a powder circulating mechanism as claimed in any one of claims 1 to 8.

10. A printing system, characterized by, a printer for printing a pattern on a film material, and an oven as claimed in claim 9 for scattering hot-melt adhesive powder to the film material after the film material is printed with a pattern by the printer and for baking the film material. ​

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