Buffer assembly, baking equipment and printing system

Abstract

The utility model discloses a buffer assembly, baking equipment and a printing system.The buffer assembly comprises a support, a swing part and a second motor, the swing part is arranged on the support and can swing relative to the support, the swing part is provided with a first position and a second position, the swing part is provided with a feeding face climbing in a gradient mode, and when the swing part is located at the first position, the swing part can swing relative to the support; the two ends of the feeding face are close to the feeding assembly and the conveying assembly respectively, when the swing part is located at the second position, an interval space is formed between the feeding face and the feeding port, and the second motor is arranged on the support, is in transmission connection with the swing part and is used for driving the swing part to swing; the buffer assembly can adjust the tension generated between feeding and conveying of the membrane material, so that tension isolation of the membrane material between the printer and the baking equipment is achieved, the working states of the printer and the baking equipment do not affect each other, and the conveying effect of the membrane material is improved.

Description

Technical Field

[0001] The present application relates to the field of DTF printing technology, and in particular to a buffer component, a baking device, and a printing system. Background Art

[0002] DTF (Direct to Film) printing is a process of printing an image or design directly onto a dedicated film material, and then thermally transferring the film material onto various textiles or other materials. The advantages of DTF printing are its high precision, high color saturation, and excellent durability. Compared with traditional screen printing, DTF printing can achieve more complex patterns and colors, and is easy to operate and has high production efficiency. In addition, DTF printing is also environmentally friendly and is widely used in clothing, advertising, gifts and other industries, providing designers and companies with more creative space and production flexibility.

[0003] The DTF printing process includes DTF printing, hot melt adhesive powder attachment, baking and hot press stamping. Among them, the film material with the printed pattern is directly fed by the feed roller after entering the baking equipment, but the printing speed of the film material is often different from the transmission speed of the film material in the baking equipment, which causes different tensions of the film material when it is transferred from the printer to the baking equipment, affecting the transmission effect of the film material. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a buffer component, a baking device and a printing system, which are intended to adjust the tension of the film material when it is transferred from the printer to the baking device, thereby improving the automatic transfer effect of the film material.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] On the one hand, the present application discloses a buffer component, the baking equipment also includes a feed port and a conveying component, the buffer component includes a bracket, a swinging member and a second motor, the swinging member is arranged on the bracket and can swing up and down relative to the bracket, and has a first position and a second position, the swinging member has a feeding surface with a climbing slope, when the swinging member is in the first position, the two ends of the feeding surface are respectively close to the feed port and the conveying component, when the swinging member is in the second position, there is a spacing space between the feeding surface and the feed port; the second motor is arranged on the bracket and is transmission-connected to the swinging member, and is used to drive the swinging member to swing.

[0007] In some embodiments of the present application, the buffer assembly includes a first sensor, which is arranged behind the swinging member along the conveying direction and is used to detect whether the film material reaches the conveying assembly; and / or, the buffer assembly also includes a second sensor, the sensing direction of the second sensor is toward the swinging member, and is used to detect the position of the swinging member.

[0008] In some embodiments of the present application, the buffer assembly includes a third sensor, which is disposed below the first position and is used to detect whether the film material sags to a preset position when the swing member is located at the second position.

[0009] In some embodiments of the present application, the bracket includes two mounting plates, which are arranged opposite to each other and are respectively located on both sides of the film material conveying direction. The swing member includes a first end and a second end. The first end is rotatably connected to one of the mounting plates, and the output shaft of the second motor passes through the other mounting plate and is transmission-connected to the second end to drive the swing member to rotate.

[0010] In some embodiments of the present application, the buffer assembly also includes a limit member, which is disposed on at least one of the mounting plates and is located on the side of the mounting plate facing the swinging member, and is used to cooperate with the swinging member during the swinging process of the swinging member to limit the swinging range of the swinging member.

[0011] In some embodiments of the present application, the second motor is connected to an end of the swing member close to the transmission assembly, and the limit member is arranged at an end of the mounting plate away from the transmission assembly.

[0012] In some embodiments of the present application, the feeding surface includes a first conveying sub-surface and a second conveying sub-surface connected to each other, the first conveying sub-surface and the second conveying sub-surface are both curved surfaces, the first conveying sub-surface is closer to the feed port than the second conveying sub-surface, and along the climbing direction of the feeding surface, the tangent angle of the first conveying sub-surface gradually increases, and the tangent angle of the second conveying sub-surface gradually decreases.

[0013] In some embodiments of the present application, a material pressing portion is provided on the swinging member, the material pressing portion is arranged on both sides of the swinging member along the conveying direction and extends toward the middle of the swinging member, and a gap suitable for the film material to pass through is formed between the material pressing portion and the conveying surface.

[0014] In some embodiments of the present application, the swinging member is in a grid shape and has powder leakage holes.

[0015] On the other hand, the present application also provides a baking device, which includes a housing and the buffer assembly as described in any one of the above. The housing is formed with a feeding port, and the buffer assembly is arranged corresponding to the feeding port.

[0016] On the other hand, the present application also provides a printing system, which includes a printer and the baking device as described above. The printer is used to print a pattern on a film material; the baking device is arranged downstream of the printer and is used to bake the film material.

[0017] Beneficial effects:

[0018] For the buffer assembly provided by the present application, the swing member is controlled by the second motor to swing. The swing member can swing to the first position and the second position. When the swing member is in the first position, both ends of the feeding surface are respectively close to the feeding port and the conveying assembly. The film material to be dried can pass through the feeding surface and be conveyed to be connected with the conveying assembly, so that the film material can move driven by the conveying assembly; when the swing member is in the second position, there is a spaced space between the feeding surface and the feeding port, and the film material to be dried can be cached in this spaced space, thereby realizing the tension isolation of the film material between the printer and the baking device, so that the working states of the printer and the baking device do not affect each other, and improving the conveying effect of the film material.

[0019] For the baking device provided by the present application, by arranging the above buffer assembly, the film material entering the baking device from the feeding port can be guided to the conveying assembly by the buffer assembly and conveyed by the conveying assembly, and the film material can be cached in the buffer assembly, realizing the tension isolation of the film material from the printer to the baking device.

[0020] For the printing system provided by the present application, by connecting the above baking device with the printer, the working states of the printer and the baking device do not affect each other, realizing the automatic conveying of the film material between the printer and the baking device. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of a printing system provided by an embodiment of the present application.

[0022] Figure 2 It is a schematic structural diagram of a baking device from a first perspective provided by an embodiment of the present application.

[0023] Figure 3 is Figure 2 A cross-sectional view along the A-A direction.

[0024] Figure 4 It is a schematic internal structural diagram of a baking device from a first perspective provided by an embodiment of the present application.

[0025] Figure 5Schematic diagram of the internal structure of the baking equipment provided by an embodiment of the present application from the second perspective.

[0026] Figure 6 Schematic diagram of the powder sprinkling component and the buffer component provided by an embodiment of the present application.

[0027] Figure 7 Schematic diagram of the buffer component provided by an embodiment of the present application.

[0028] Figure 8 Schematic diagram of the conveying component provided by an embodiment of the present application from the first perspective.

[0029] Figure 9 Schematic diagram of the conveying component provided by an embodiment of the present application from the second perspective.

[0030] Figure 10 For Figure 9 Enlarged view of area C in

[0031] Figure 11 For Figure 3 Enlarged view of area B in

[0032] Figure 12 Schematic diagram of the powder sprinkling mechanism provided by an embodiment of the present application.

[0033] Figure 13 Schematic diagram of the powder sprinkling roller provided by an embodiment of the present application.

[0034] Figure 14 Schematic diagram of the powder sprinkling component provided by an embodiment of the present application from the first perspective.

[0035] Figure 15 Schematic diagram of the baking equipment provided by an embodiment of the present application from the second perspective.

[0036] Figure 16 Schematic diagram of the internal structure of the powder sprinkling component provided by an embodiment of the present application.

[0037] Figure 17 Schematic diagram of the powder sprinkling component provided by an embodiment of the present application from the second perspective.

[0038] Figure 18 For Figure 17 Cross-sectional view along the E-E direction.

[0039] Figure 19 Schematic diagram of the baking component provided by an embodiment of the present application.

[0040] Figure 20 For Figure 19 Cross-sectional view along the D-D direction.

[0041] Description of Main Component Symbols:

[0042] 01 - Baking Equipment; 02 - Printer; 1 - Housing; 11 - Feeding Port; 12 - Powder Adding Port; 13 - Frame; 14 - Side Plate; 2 - Buffer Assembly; 21 - Swing Member; 211 - Feeding Surface; 2111 - First Conveyor Sub - surface; 2112 - Second Conveyor Sub - surface; 212 - Pressing Part; 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 Spraying Assembly; 31 - Powder Spraying Mechanism; 311 - Powder Spraying Bin; 3111 - Reinforcing Rib; 313 - Powder Spraying Roller; 3131 - Powder Groove; 314 - Third Motor; 315 - Powder Scraping Part; 32 - Powder Storage Mechanism; 321 - Powder Storage Bin; 321a - Powder Recycling Part; 321b - Powder Storage Part; 3211 - Powder Guiding Groove; 3212 - First Limiting Projection; 3213 - Second Limiting Projection; 3214 - First Through - hole; 32141 - First Notch; 3215 - Powder Recycling Port; 3216 - Sleeve; 322 - Powder Adding Bin; 3222 - Third Limiting Projection; 323 - Fourth Sensor; 324 - Rebound Part; 325 - Grille; 33 - Powder Circulation Mechanism; 331 - Powder Circulation Synchronous Belt; 3311 - Tooth Body Part; 332 - Fourth Motor; 333 - Tensioning Mechanism; 3331 - Tensioning Part; 3332 - Tensioning Screw; 334 - Powder Discharging Part; 335 - Transmission Structure; 3351 - Driving Wheel; 3352 - Driven Wheel; 34 - Powder Beating Mechanism; 341 - Fifth Motor; 342 - Rotating Shaft; 343 - Beating Part; 3431 - Clamping Body; 3432 - Flexible Part; 4 - Conveyor Assembly; 41 - Conveyor Mechanism; 411 - Conveyor Belt; 411a - First Sub - conveyor Belt; 411b - Second Sub - conveyor Belt; 4111 - Boss; 412 - Limiting Guide Rail; 412a - First Sub - limiting Guide Rail; 412a1 - First Guide Part; 412a2 - Third Guide Part; 412b - Second Sub - limiting Guide Rail; 412b1 - Second Guide Part; 42 - First Motor; 44 - Code Disk; 45 - Sixth Sensor; 46 - First Gear; 47 - Second Gear; 48 - Third Gear; 5 - Baking Assembly; 51 - Box Body; 511 - Air Supply Port; 512 - Aluminum Foil Layer; 513 - Thermal Insulation Material Layer; 514 - Mirror Layer; 52 - Heating Element; 53 - Exhaust Structure; 531 - Exhaust Fan; 532 - First Exhaust Pipe; 533 - Second Exhaust Pipe; 54 - First Fan; 55 - Isolation Box; 56 - Second Fan; 6 - Powder Adding Cover; 7 - Material Receiving Assembly; 71 - Material Receiving Bin; 711 - Material Receiving Chamber; 712 - Material Receiving Port; 72 - Guide Part; 8 - Fifth Sensor; 9 - Controller; 100 - Film Material. Detailed Implementation Manner

[0043] This application provides a buffer component, a baking device, and a printing system. To make the objectives, technical solutions, and effects of this application clearer and more explicit, the following further describes this application in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain this application and are not used to limit this application.

[0044] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, specific orientation structure, and operation. Therefore, it should not be construed as a limitation to this application. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0045] In the description of this application, it should be noted that unless otherwise clearly defined and limited, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] Figure 1 It is a schematic structural diagram of the printing system provided by this application.

[0047] As Figure 1 shown, this application provides a DTF printing system. The printing system includes a printer 02 and a baking device 01. The printer 02 includes a print head suitable for DTF printing. Exemplarily, the print head can be an inkjet print head, etc. The printer 02 is used to print a pattern onto a film material 100. The baking device 01 can be arranged on one side of the discharge port of the printer 02, and can quickly receive the film material 100 after the printer 02 prints the pattern, and is used to perform operations of spreading hot melt adhesive powder and baking on the film material 100 after the printer 02 prints the pattern, so that the pattern on the film material 100 has the property of thermal transfer and can be transferred to media such as clothes after hot pressing.

[0048] Generally, the film material 100 can be a PET film. The thickness of the film material 100 can be 0.75 mm. The film material 100 with the above-mentioned material and thickness has good transferability and can improve the clarity of the pattern transferred to the product. For small-scale DTF use, single sheets of paper can be selected; for large-scale DTF use, PET film rolls can be used.

[0049] Figure 2 This is a schematic structural diagram of the baking equipment provided by this application from the first perspective.

[0050] As Figure 1 and Figure 2 shown, the baking equipment 01 includes a housing 1. A feed port 11 suitable for the film material 100 to pass through is formed on the housing 1. The film material 100 after printing the pattern can enter the baking equipment 01 through the feed port 11 to perform powder spreading and baking operations.

[0051] Figure 3 This is Figure 2 a cross-sectional view along the A-A direction.

[0052] As Figure 3 shown, in some embodiments, the housing 1 may include a frame 13 and side plates 14 fixed to the frame 13. The frame 13 forms a frame structure for forming the external support structure of the baking equipment 01. The side plates 14 surround the outside of the frame 13, and the feed port 11 can be formed on the side plate 14 of the housing 1 facing the printer 02.

[0053] As Figure 2 and Figure 3 shown, a receiving cavity is formed inside the housing 1. The baking equipment 01 further includes a buffer assembly 2, a powder spreading assembly 3, a conveying assembly 4, and a baking assembly 5. The buffer assembly 2, the powder spreading 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.

[0054] A feed port 11 is formed inside the housing 1. The film material 100 enters the housing 1 through the feed port 11. The buffer assembly 2 is arranged between the feed port 11 and the conveying assembly 4 and is used to guide the film material 100 entering from the feed port 11 to the conveying assembly 4. The conveying speed of the film material 100 can be buffered in the buffer assembly 2, thereby realizing the tension isolation between the conveying and feeding of the film material 100, so that the two do not affect each other and improve the conveying effect of the film material 100.

[0055] The powder spreading assembly 3 is arranged between the feed port 11 and the conveying assembly 4. The buffer assembly 2 passes through the powder spreading assembly 3. The powder spreading assembly 3 is used to accommodate the hot melt adhesive powder and to spread the hot melt adhesive powder onto the film material 100. When the film material 100 is buffered in the buffer assembly 2, the powder spreading assembly 3 can spread the hot melt adhesive powder onto the film material 100 from above the film material 100 and recover the excess hot melt adhesive powder.

[0056] The conveying component 4 is used to convey the film material 100, and the baking component 5 is arranged in the conveying path of the film material 100 to bake the film material 100 so that the hot melt adhesive powder melts on the film material 100.

[0057] The above structure realizes the automatic operations of feeding, powder spreading, conveying and baking of the film material 100, improves the baking efficiency of the film material 100, and enhances the user experience.

[0058] In some embodiments, the transmission component 4 includes a first transmission part and a second conveying part. The first transmission part and the second conveying part are connected to each other. The first transmission part extends downward from one side of the discharge port 11 along the conveying direction, and the second conveying part is located on the side of the feed port 11 opposite to the conveying direction. A receiving space is formed between the first transmission part and the second conveying part. The buffer component 2 and the powder spreading component 3 are arranged in this receiving space, and the baking component 5 penetrates through the second conveying part. In the above, each component of the baking device 01 is reasonably arranged, which improves the compactness of the structure of the baking device 01 and reduces the volume of the baking device 01 without affecting the device performance. In addition, the transmission path of the transmission component 4 extends between two opposite sides of the housing 1, so that the transmission component 4 has a long transmission path, providing appropriate time for the conveying and baking of the film material 100.

[0059] In some embodiments, the baking component 5 is distributed at the rear of the housing 1. When the device is running, the baking component 5 will generate a certain amount of heat, and it is easy for the operator to feel uncomfortable when approaching. By arranging the baking component 5 at the rear of the housing 1, that is, on the side facing the printing device, the operator can stay away from the baking component 5 when using, improving the user experience.

[0060] Figure 4 It is a schematic diagram of the internal structure of the baking device provided by this application from the first perspective.

[0061] As Figure 3 and Figure 4As shown in the figure, the baking device 01 further includes a material receiving component 7, and the material receiving component 7 is arranged at the bottom of the housing 1. The material receiving component 7 forms a material receiving cavity 711 and a material receiving opening 712, and the material receiving opening 712 communicates with the material receiving cavity 71 and the second receiving cavity 17. The material receiving opening 712 is opposite to the conveying component 4 at the bottom of the baking component 5, so that the film material 100 on the conveying component 4 enters the material receiving cavity 711 through the material receiving opening 712. The material receiving component 7 provides a storage space for the film material 100 after baking, can immediately store the baked film material 100, reduces unnecessary waiting time, and improves the user experience. The material receiving component 7 is located on the other side of the powder spraying component 3 in the width direction c of the housing 1, which can effectively utilize the space of the second receiving cavity 17, optimize the internal layout of the device, and the material receiving component 7 and the baking component 5 are located on different sides in the width direction c of the housing 1, so that when taking out the film material 100 from the material receiving component 7, it is not necessary to approach the baking component 5, avoiding being scalded.

[0062] The material receiving component 7 includes a material receiving bin 71 and a guiding member 72. The material receiving bin 71 is connected to the housing 1 and is located at the bottom of the housing 1, and is used for storing the dried film material 100. The material receiving bin 71 forms a material receiving cavity 711 and a material receiving opening 712, and through the material receiving bin 71, the automatic storage of the film material 100 after drying can be realized, thereby realizing the integrated automatic operation of the drying device.

[0063] The material receiving bin 71 is detachably installed on the housing 1 for easy removal of the material receiving bin 71. The guiding member 72 is arranged at one end of the material receiving bin 71 close to the material receiving opening 712 to guide the film material 100 falling off the conveying component 4 into the material receiving cavity 711. Through the guiding member 72, it is possible to prevent the baked film material 100 from accumulating at the position of the material receiving bin 71 close to the material receiving opening 712. Exemplarily, the guiding member 72 can adopt an element with an inclined surface or a curved surface (such as an inclined plate, etc.), or a fan, etc. In this embodiment, the guiding member 72 is configured as a fan, the air outlet of the fan faces the material receiving opening 712, and multiple fans can be provided. The multiple fans are distributed at intervals along the width of the film material 100 falling off the conveying component 4, so that the film material 100 can receive a relatively uniform driving force in the width direction, and thus be stored in the material receiving bin 71 more neatly.

[0064] A fifth sensor (not shown in the figure) is arranged in the material receiving bin 7. The fifth sensor is fixed on the upper side wall inside the material receiving bin 7 and is used to detect the storage amount of the film material 100 in the material receiving bin 7. When the film material 100 in the material receiving bin 7 is stored to a certain amount, the fifth sensor can send an alarm signal to remind the operator to clean the film material 100 in the material receiving bin 7.

[0065] Figure 5 It is a schematic diagram of the internal structure of the baking device provided by this application from the second perspective.

[0066] As Figure 3 andFigure 5 As shown, the conveying track of the conveying component 4 passes through at least two opposite surfaces of the baking component 5. In this way, the travel of the film material 100 through the baking component 5 is extended, the baking time of the film material 100 can be shortened, and the baking efficiency can be improved. In this embodiment, the conveying track of the conveying component 4 is arranged around the baking component 5.

[0067] As Figure 4 shown, the baking device 01 may further include a controller 9. The controller 9 can be electrically connected to the host computer and cooperate with the host computer to work. The controller 9 can be arranged in the housing 1. The controller 9 can adopt a PLC controller. The controller 9 is electrically connected to the buffer component 2, the powder sprinkling component 3, the conveying component 4 and the baking component 5 respectively, and can realize the centralized and unified control of the whole machine, so as to improve the accuracy of the automatic control of the baking device 01. The controller 9 may include a main board and electronic components and interfaces arranged on the main board, etc. The main board can be fixed on the frame 11 or the side plate 14.

[0068] Figure 6 It is a schematic structural diagram of the powder sprinkling component and the buffer component provided by the present application. Figure 7 It is a schematic structural diagram of the buffer component provided by the present application.

[0069] As Figure 3 , Figure 5 , Figure 6 and Figure 7 shown, the buffer component 2 includes a bracket 24, and the bracket 24 is fixed in the housing 1 and can be used as a support structure of the buffer component 2.

[0070] The bracket 24 includes two mounting plates 241, and the two mounting plates 241 are arranged oppositely and are respectively located on both sides of the conveying direction of the film material 100.

[0071] Specifically, the buffer component 2 includes a swing member 21. The swing member 21 has a grid-shaped plate structure. The swing member 21 is provided with powder leakage holes 213, which can reduce the friction force between the swing member 21 and the film material 100, and the excess hot melt adhesive powder sprinkled downward by the powder sprinkling component 3 or the hot melt adhesive powder shaken off from the film material 100 can fall from the powder leakage holes 213 and be recycled.

[0072] One end of the swing member 21 facing away from the feeding port 11 is provided with an avoidance groove 214; the notch of the avoidance groove 214 faces the conveying direction of the film material 100. A plurality of avoidance grooves 214 are arranged at intervals along the length direction of the swing member 21 in the baking device 01. The avoidance grooves 214 are correspondingly arranged with the beating members 343 of the powder sprinkling component 3. The powder beating mechanism 34 of the powder sprinkling component 3 can rotate so that the beating member 343 is inserted into the avoidance groove 214 from one end of the avoidance groove 214 facing away from the feeding port 11, and can beat the back surface of the film material 100 located in the buffer component 2 to shake off the hot melt adhesive powder that is not adhered to the film material 100.

[0073] The swing member 21 is arranged opposite to the feed port 11. After the film material 100 enters the baking device 01 from the feed port 11, it will be transferred to the swing member 21. The swing member 21 is arranged on the bracket 24 and can swing relative to the bracket 24. It has a first position and a second position. The first position can be set to the maximum height that the swing member 21 can reach when it swings upward, and the second position can be set to the swing zero position of the swing member 21, that is, the lowest position where the swing member 21 stays. The swing member 21 can swing within the range between the first position and the second position. The swing member 21 has a feeding surface 211 with a climbing slope. When the swing member 21 is in the first position, the two ends of the feeding surface 211 are close to the feed port 11 and the conveying component 4 respectively. When the swing member 21 is in the second position, there is a spacing space between the feeding surface 211 and the feed port 11.

[0074] 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 feed port 11, the swing member 21 swings upward to the first position, and the two ends of the swing member 21 can be close to the feed 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, transition to the conveying assembly 4, and achieve engagement with 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. At this time, the swing member 21 creates a certain avoidance space for the film material 100 to pass through, and the film material 100 can be buffered at the corresponding position of the swing member 21. The film material 100 will be pressed down to form an arc under the action of gravity. It can be understood that there is a speed difference between the conveying speed of the film material 100 in the baking device 01 and the printing speed of the printer 02. The printing speed of the printer 02 is faster. The swinging member 21 swings downward to form a buffer area to avoid the accumulation of the film material 100, and enables the powder spreading component 3 to spread the hot melt adhesive powder more evenly on the film material 100, and can achieve tension isolation between the baking device 01 and the printer 02.

[0075] The buffer assembly 2 further includes a second motor 22. The second motor 22 is disposed on the bracket 24 and is in transmission connection with the swing member 21, and is used to drive the swing member 21 to swing.

[0076] like Figure 3 and Figure 6 As shown, 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 on one of the mounting plates 241 through an axle. The output shaft of the second motor 22 is passed through the connecting hole of the other mounting plate 241 and is transmission-connected to the other end of the swing member 21, thereby realizing the rotation of the swing member 21. Furthermore, the second motor 22 is connected to one end of the swing member 21 along the transmission direction, so that the swing member 21 can achieve a larger swing amplitude.

[0077] As shown Figure 6 in the figure, the feeding surface 211 includes a connected first conveying sub-surface 2111 and a second conveying sub-surface 2112. Both the first conveying sub-surface 2111 and the second conveying sub-surface 2112 are curved surfaces. The first conveying sub-surface 2111 is closer to the feeding port 11 than the second conveying sub-surface 2112. The tangent angle of the first conveying sub-surface 2111 gradually increases, and the tangent angle of the second conveying sub-surface 2112 gradually decreases. The first sub-driving surface 2111 and the second sub-driving surface 2112 form the above-mentioned curved surface, which can, to a certain extent, alleviate the conveying speed of the film material 100 entering from the printing end.

[0078] Figure 7 It is a schematic structural diagram of the buffer assembly provided by the present application.

[0079] In some embodiments, a pressing part 212 is formed on the swinging part 21. The pressing part 212 is formed on both sides of the swinging part 21 along the driving direction and protrudes towards the inside of the swinging part 21. A gap suitable for the film material 100 to pass through is formed between the pressing part 212 and the conveying surface 211, which can play a certain guiding role in the conveying of the film material 100. Among them, the pressing part 212 can be in the shape of a sheet or a plate.

[0080] As shown Figure 3 in the figure, in some embodiments, the buffer assembly 2 includes a first sensor 27. The first sensor 27 is arranged at one end of the conveying assembly 4 close to the swinging part 21 for detecting whether there is a film material 100 entering the conveying assembly 4 from the buffer assembly 2. When the first sensor 27 detects that there is a film material 100 connecting from the buffer assembly 2 to the conveying assembly 4, the motor 22 controls the swinging part 21 to swing downward to the zero position, so that the film material 100 is cached at the position of the buffer assembly 2, forming a downward-bending arc, avoiding the film materials 100 from piling up together, so that the powder spreading assembly 3 can evenly spread powder on the film material 100.

[0081] The buffer assembly 2 includes a second sensor 23. The sensing direction of the second sensor 23 faces the swinging part 21 for detecting the position of the swinging part 21 and judging whether the swinging part 21 swings to the first position. In this embodiment, the second sensor 23 is arranged on one side of the buffer assembly 2 facing the feeding port 11 and fixed on one of the mounting plates 241. The first position is within the sensing range of the second sensor 23. The distance between the second sensor 23 and the first position is short, which improves the reaction speed of the second sensor 23.

[0082] When the swing member 21 swings to the first position, the second sensor 23 can generate an excitation signal, the motor 22 stops rotating, and the film material 100 passes through the feeding surface 211 of the swing member 21 and enters the conveying assembly 4. At this time, the feeding surface 211 of the swing member 21 can contact the passing film material 100, supporting the film material 100, so that the film material 100 can smoothly enter the conveying assembly 4. The second sensor 23 can realize that the film material 100 is automatically conveyed to the conveying assembly 4 along the swing member 21 after feeding.

[0083] like Figure 6 As shown, further, the buffer assembly 2 also includes a third sensor 26. The third sensor 26 is arranged below the first position and located on the side of the swing member 21 close to the feed port 211, and is used to detect whether the film material 100 sags to the lower limit position when the swing member 21 is located at the second position, so as to respond to the controller 9, coordinate the start and stop of the conveying assembly 4, and adjust the conveying speed of the film material 100. In some embodiments, the third sensor 26 can be fixed to the upper warehouse wall of the powder storage bin 321 of the powder spreading mechanism 3 through a connecting member, and is distributed above the grille 325 in the powder storage bin 321. Through the powder recovery port 3215 of the powder storage bin 321, it can be more intuitively monitored whether the film material 100 reaches the preset position when sagging.

[0084] In the above, when the film material 100 is connected and fixed to the conveying component 4, the motor 22 rotates in the opposite direction, controls the swinging member 21 to swing downward, and the conveying component 4 stops conveying the film material 100. The film material 100 is buffered in the buffer component 2 and droops under the pushing action of the printer 02, forming a downward curvature. When the film material 100 is bent to a certain extent, the lower limit position of the film material 100 triggers the third sensor 26, and the conveying component 4 starts to convey the film material 100 downstream. When the lower limit position of the film material 100 is out of the sensing range of the third sensor 26, the conveying component 4 stops working, and the film material 100 forms a downward curvature in the buffer component 2 again, and this cycle is repeated to realize automatic feeding of the film material 100.

[0085] In some embodiments, the first sensor 27, the second sensor 23 and the third sensor 26 may be photoelectric sensors. The first sensor 27, the second sensor 23 and the third sensor 26 are electrically connected to the controller 9 respectively.

[0086] like Figure 6As shown, in some embodiments, to further limit the swing of the swing member 21, a limiting member 25 is provided on at least one mounting plate 241. The limiting member 25 is disposed on the side of the mounting plate 241 facing the swing member 21, and the limiting member 25 protrudes from the surface of the mounting plate 241 for limiting 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 further upward swing of the swing member 21, ensuring that when the swing member 21 swings upward, the film material 100 can be smoothly connected to the conveying assembly 4.

[0087] As Figure 3 and Figure 5 shown, in some embodiments, the conveying assembly 4 is disposed downstream of the buffer assembly 2 for conveying the film material 100 into the baking assembly 5. The conveying assembly 4 can fix both side edges of the film material 100 along the conveying direction. By the movement of the conveying assembly 4, the film material 100 can be driven to be transmitted to the downstream assembly, so that the transmission of the film material 100 can be realized without the traction of the conveying roller, enabling the conveying assembly 4 to convey the film material 100 with a short single sheet amplitude, improving the flexibility of the baking device 01, and reducing the waste of the film material 100.

[0088] In some embodiments, a speed difference is formed between the transmission speed of the film material 100 in the baking device 01 and the printing speed of the printer 02, and the engagement between the film material 100 and the conveying assembly 4 can be achieved by the principle of differential speed. Exemplarily, during the engagement process between the film material 100 and the conveying assembly 4, the printing speed of the printer 02 is fast, that is, the speed at which the film material 100 enters the buffer assembly 2 is relatively fast, and the movement of the conveying assembly 4 is relatively slow to complete the fixation between the film material 100 and the conveying assembly 4.

[0089] Figure 8 It is a schematic structural view of the conveying assembly provided by the present application from the first perspective. Figure 9 It is a schematic structural view of the conveying assembly provided by the present application from the second perspective.

[0090] As Figure 3 , Figure 5 , Figure 8 and Figure 9 shown, further, the conveying assembly 4 includes a conveying mechanism 41 and a first motor 42. The first motor 42 is in transmission connection with the conveying mechanism 41 for driving the conveying assembly 4 to move so as to convey the film material 100 on the conveying assembly 4 to the baking assembly 5.

[0091] The film material 100 can be fixed on the conveying mechanism 41. The conveying mechanism 41 is provided with fixing parts, and there are a plurality of fixing parts. The plurality of fixing parts are respectively distributed on both sides of the conveying mechanism 41 in the conveying direction of the film material 100, and both side edges of the film material 100 along the conveying direction can be respectively fixed on the fixing parts.

[0092] In some embodiments, the conveying mechanism 41 includes a conveyor belt 411 and a limiting guide rail 412. The conveyor belt 411 can be a synchronous belt. The synchronous belt has high transmission accuracy and good transmission stability, which can ensure the stable conveyance of the film material 100.

[0093] There are two sets of conveyor belts 411. The two sets of conveyor belts 411 are arranged oppositely and are connected by a transmission shaft, which improves the transmission consistency of the two sets of conveyor belts 411, thereby improving the transmission stability of the conveying mechanism 41. At the same time, there is no need to set two first motors 42. The two side edges of the film material 100 along the conveying direction can be respectively fixed on the conveyor belt 411 and move with the conveyor belt 411.

[0094] Furthermore, the conveyor belt 411 includes a first sub-conveyor belt 411a and a second sub-conveyor belt 411b. The first sub-conveyor belt 411a is arranged between the buffer assembly 2 and the baking assembly 5 and is used to convey the film material 100 from the buffer assembly 2 to the front of the baking assembly 5. The second sub-conveyor belt 411b is wound around the baking assembly 5 and is used to convey the film material 100 along the circumferential direction of the baking assembly 5, that is, the second sub-conveyor belt 411b passes through at least three surfaces of the baking assembly 5 at least once, extending the travel of the film material 100 through the baking assembly 5 and improving the baking effect and printing effect. The first sub-conveyor belt 411a and the second sub-conveyor belt 411b rotate synchronously.

[0095] The first sub-conveyor belt 411a is connected by a plurality of idler wheels. Specifically, a part of the first sub-conveyor belt 411a located on the front side of the buffer assembly 2 is connected with an idler wheel to change the conveying direction through this idler wheel, extend downward to the lower part of the housing 1, and then connect another idler wheel to change its conveying direction to be inclined downward and backward, and then change the conveying direction to the initial position through the third idler wheel. The second sub-conveyor belt 411b is connected and turned by four idler wheels, so that the conveying trajectory of the second sub-conveyor belt 411b is approximately rectangular.

[0096] The first sub-conveyor belt 411a and the second sub-conveyor belt 411b are close to each other at the bottom of the housing 1, and the rotation directions of the first sub-conveyor belt 411a and the second sub-conveyor belt 411b are opposite. For example, the first sub-conveyor belt 411a rotates clockwise to convey the film material 100 to a position close to the second sub-conveyor belt 411b, and the second sub-conveyor belt 411b rotates counterclockwise. In this way, under the rotation of the first sub-conveyor belt 411a and the second sub-conveyor belt 411b, the film material 100 can be transferred at the position where the first sub-conveyor belt 411a and the second sub-conveyor belt 411b are close to each other.

[0097] The conveyor belt 411 is set as a first sub-conveyor belt 411a and a second sub-conveyor belt 411b, which can optimize the conveying direction of the conveyor belt within a limited space, reduce the change frequency of the driving angle of a single-section conveyor belt, improve the stability of the conveying of the film material 100, facilitate the layout of the positions of each component, and can improve the compactness of the overall machine structure, thereby reducing the volume of the overall machine.

[0098] As Figure 5 and Figure 8 shown, in some embodiments, the conveying mechanism 41 further includes a first gear 46, a second gear 47, and a third gear 48. The first gear 46 is disposed between the second gear 47 and the third gear 48. The first gear 46 meshes with the second gear 47 and the third gear 48 respectively, and the first gear 46 is coaxially arranged with an idler pulley on the first sub-conveyor belt 411a, thereby driving it to rotate synchronously with the first sub-conveyor belt 411a, and the rotation direction of the first gear 46 is the same as the rotation direction of the first sub-conveyor belt 411a, so that the first sub-conveyor belt 411a drives the film material 100 to gradually approach the second sub-conveyor belt 411b. The second gear 47 is coaxially arranged with an idler pulley on the second sub-conveyor belt 411b, thereby driving the second sub-conveyor belt 411b to rotate synchronously, and the third gear 48 is drivingly connected to the first motor 42. In the above, through the transmission of the gear assembly, the transmission accuracy is improved.

[0099] The fixing part for fixing the film material 100 is arranged on the side of the conveyor belt facing the limiting guide rail 412. In this way, under the action of the limiting guide rail 412, the film material 100 can be limited on the fixing part.

[0100] Figure 10 For Figure 9 the enlarged view of area C in

[0101] As Figure 5 , Figure 9 and Figure 10 shown, in some embodiments, the fixing part is set as a boss 4111. The film material 100 can pass through the boss 4111 to be fixed on the conveyor belt 411. There are multiple bosses 4111, and the multiple bosses 4111 are spaced apart along the length direction of the conveyor belt 411. A piece of film material 100 can be fixed on the multiple bosses 4111, improving the adhesion between the film material 100 and the conveyor belt 411. The boss 4111 is arranged along the length direction of the conveyor belt 411, so that the film material 100 does not need to be fixed to a specific position of the film material 100. In this embodiment, the bosses 4111 are evenly spaced apart along the length direction of the conveyor belt 411.

[0102] Multiple fixing holes can be arranged on both sides of the film material 100, and the distance between two adjacent fixing holes is equal to the distance between two adjacent bosses 4111, so that each side of the film material 100 can be fixed on multiple bosses 4111 simultaneously.

[0103] Further, to facilitate the sleeving of the membrane material 100 onto the boss 4111, the diameter length of the boss 4111 can be set to gradually decrease outward from the fixed position. Exemplarily, the boss 4111 can be set to a conical shape.

[0104] The fixing holes on the membrane material 100 can be set as waist-shaped holes, which can further facilitate the fixing of the membrane material 100 onto the boss 4111. The limiting guide rail 412 is arranged outside the conveyor belt 411 and extends along the extending direction of the conveyor belt 411, for limiting the membrane material 100 from detaching from the conveyor belt 411. A first gap is formed between the limiting guide rail 412 and the conveyor belt 411, and the width of the first gap is adapted to the thickness of the membrane material 100. The membrane material 100 can move along the first gap, and it can be ensured that the membrane material 100 will not detach from the conveyor belt 411.

[0105] In some embodiments, the limiting guide rail 412 is only arranged at the position on the conveyor belt 411 opposite to the conveying track of the membrane material 100, reducing material waste.

[0106] As Figure 5 shown, further, the limiting guide rail 412 can include a first sub-limiting guide rail 412a and a second sub-limiting guide rail 412b. The first sub-limiting guide rail 412a is arranged outside the first sub-conveyor belt 411a, for limiting the membrane material 100 from detaching from the first sub-conveyor belt 411. The second sub-limiting guide rail 412b is arranged outside the second sub-conveyor belt 411b, for limiting the membrane material 100 from detaching from the second sub-conveyor belt 411b.

[0107] As Figure 10 shown, at one end of the second sub-limiting guide rail 412b close to the first sub-conveyor belt 411a, a second guiding portion 412b1 is provided. The second guiding portion 412b1 is formed with a guiding surface inclined towards the first sub-conveyor belt 411a, for transferring the membrane material 100 from the first sub-conveyor belt 411a to the second sub-conveyor belt 411b.

[0108] At one end of the first sub-limiting guide rail 412a close to the second sub-conveyor belt 411b, a first guiding portion 412a1 is provided. The first guiding portion 412a1 is formed with a guiding surface inclined towards the second sub-conveyor belt 411b. The first guiding portion 412a1 and the second guiding portion 412b1 are arranged in a staggered manner, which can further improve the stability of transferring the membrane material 100 from the first sub-conveyor belt 411a to the second sub-conveyor belt 411b.

[0109] A second gap is formed between the first guiding portion 412a1 and the second guiding portion 412b1. A first transition area is formed at a position on the first sub-conveyor belt 411a opposite to the second gap, and a second transition area is formed at a position on the second sub-conveyor belt 411b opposite to the second gap. The first transition area and the second transition area are arranged close to each other, and the bosses 4111 on the first transition area are arranged opposite to the bosses 4111 on the second transition area, so that the film material 100 separated from the first sub-conveyor belt 411a can be smoothly fixed on the second sub-conveyor belt 411b.

[0110] As Figure 5 and Figure 9 shown, a third guiding portion 412a2 is formed at one end of the first sub-limiting guide rail 412a close to the buffer assembly 2. The third guiding portion 412a2 bends upward to form a third guiding opening, and the opening size of the third guiding opening gradually decreases in the direction away from the buffer assembly 2, and is used to guide the film material 100 entering the conveying assembly 4, so that the film material 100 entering the third guiding opening can gradually approach the conveyor belt, and thus be connected to the conveying assembly 4 and move with the conveying assembly 4.

[0111] The first sensor 27 can be arranged on the first guiding portion 412a1, and the first sensor 27 can detect the position of the fixing holes on the passing film material 100, so as to judge the biting state between the film material 100 and the bosses 4111 on the conveyor belt 411.

[0112] As Figure 5 and Figure 8 shown, in some other embodiments, the conveying mechanism 41 includes a code disc 44 and a sixth sensor 45. The sixth sensor 45 is arranged above the code disc 44 and fixed to the outer side of the box body 51 of the baking assembly 5. The code disc 44 is provided with circumferential teeth, and the distance between two adjacent teeth is equal to the distance between two adjacent bosses 4111. The rotation trajectory of the code disc 44 is within the detection range of the sixth sensor 45, and the code disc 44 is used to detect the rotation distance of the code disc 44, so as to obtain the position of the bosses 4111 on the conveyor belt 411.

[0113] The code disk 44 is connected to the conveyor belt 411 through a gear set. Specifically, the code disk 44 and the first gear 46 are coaxially arranged. The first gear 46, the second gear 47, and the third gear 48 have the same rotation radius. The sixth sensor 45 is arranged on one side of the code disk 44 to detect the rotation distance of the code disk 44. When the teeth of the code disk 44 pass by the sixth sensor 45, the sixth sensor 45 will generate an excitation signal. Since there is a speed difference between the conveying speed of the conveying assembly 4 and the film discharging speed of the film material 100 in the printer 02, when the film material 100 enters the third guiding part 412a2 and travels a certain position, the fixing holes on the film material 100 will engage with the protrusions 4111 on the conveyor belt 411. By detecting the position of the teeth on the code disk 44 through the sixth sensor 45, the rotation distance of the first sub-conveyor belt 411 can be judged, so as to judge whether the film material 100 entering the first sub-conveyor belt 411 from the buffer assembly 2 is accurately fixed on the transmission mechanism 41.

[0114] Figure 11 is Figure 3 the enlarged view of area B in

[0115] The powder spreading assembly 3 includes a powder spreading mechanism 31, a powder storage mechanism 32, and a powder circulation mechanism 33. The powder spreading mechanism 31 is arranged above the buffer assembly 2 and is used to spread hot melt adhesive powder on the film material 100 cached on the buffer assembly 2. When the swinging member 21 swings downward to the second position, the film material 100 is cached at the opposite position of the swinging member 21, forming a downwardly curved arc shape. At this time, spreading the hot melt adhesive powder on the film material 100 by the powder spreading mechanism 31 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 arranged below the powder spreading mechanism 31. The powder storage mechanism 32 is formed with a powder recovery port 3215 facing the powder spreading mechanism 31 and is used to store hot melt adhesive powder.

[0117] The powder circulation mechanism 33 is at least partially arranged in the powder storage mechanism 32 and is opposite to at least part of the powder spreading mechanism 31. It is used to circulate between the powder spreading mechanism 31 and the powder storage structure 32, carry part of the hot melt adhesive powder in the powder storage mechanism 32, and transfer at least part of the part of the hot melt adhesive powder to the powder spreading mechanism 31.

[0118] Figure 12 is the structural schematic diagram of the powder spreading mechanism provided by the present application.

[0119] Such as Figure 3 , Figure 11 and Figure 12As shown, further, the powder sprinkling mechanism 31 includes a powder sprinkling bin 311, a powder sprinkling roller 313 and a third motor 314. The powder sprinkling bin 311 is used to store the hot melt adhesive powder transferred from the powder storage mechanism 32 by the powder circulation mechanism 33. The inner diameter of the powder sprinkling bin 311 gradually decreases from top to bottom, and its cross-section is roughly V-shaped, so that the hot melt adhesive powder in the powder sprinkling bin 311 can better slide to the bottom of the powder sprinkling bin 311. A powder sprinkling port is provided at the bottom of the powder sprinkling bin 311 to facilitate the discharge of the hot melt adhesive powder from the powder sprinkling port. The powder sprinkling port extends along the length of the powder sprinkling bin 311. It can be understood that the length of the powder sprinkling port is not less than the width of the film material 100 to ensure that the hot melt adhesive powder can cover various positions on the width of the film material 100.

[0120] In order to improve the strength of the powder spreading bin 311, a plurality of reinforcing ribs 3111 are spaced apart in the powder spreading bin 311. The reinforcing ribs 3111 are respectively connected to the two side walls of the powder spreading bin 311 in the length direction.

[0121] Figure 13 This is a schematic diagram of the structure of the powder spreading roller provided in this application.

[0122] like Figure 12 and Figure 13 As shown, the powdering roller 313 is disposed in the powdering port and extends along the length direction of the powdering port. The third motor 314 is connected to the powdering roller 313 for driving the powdering roller 313 to rotate so as to bring the hot melt adhesive powder in the powdering bin 311 out of the powdering port and spread it downward onto the film material 100.

[0123] In some embodiments, the powder spreading 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 period of time to ensure that a sufficient amount of hot melt adhesive powder is spread. Then the third motor 314 stops rotating to accurately control the landing point of the hot melt adhesive powder on the film material 100. The amount of powder spread can be adjusted through printing parameters. For example, if the number of PASS is high or the picture is large, the amount of powder spread is increased.

[0124] The surface of the powder-spreading roller 313 is provided with at least one powder groove 3131 , which can be used to carry hot melt adhesive powder. The powder groove 3131 extends along the length direction of the powder-spreading roller 313 to improve the uniformity of spreading the hot melt adhesive powder on the film material 100 .

[0125] like Figure 13 As shown, in some embodiments, a plurality of powder grooves 3131 are provided on the circumferential surface of the powder sprinkling roller 313, and the plurality of powder grooves 3131 are evenly spaced to improve the powder sprinkling efficiency.

[0126] like Figure 11 and Figure 12As shown, in some embodiments, the powder spreading mechanism 31 further includes a powder scraping member 315. The powder scraping member 315 is disposed in the area of the powder spreading bin 311 near the powder spreading opening. The powder scraping member 315 is in contact with the powder spreading roller 313 to scrape the hot melt adhesive powder in the powder groove 3131 into the powder spreading opening when the powder spreading roller 313 rotates.

[0127] In some embodiments, there are two powder scraping members 315. The two powder scraping members 315 are respectively disposed at both ends of the powder spreading opening, and the two powder scraping members 315 face in opposite directions, are located on both radial sides of the powder spreading roller 313, and are both in contact with the powder spreading roller 313.

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

[0129] The two powder scraping members 315 are inclined, face in opposite directions, and the inclination direction is opposite to the rotation direction of the powder spreading roller 313, so that when the powder spreading roller 313 rotates, the two powder scraping members 315 can be inserted into the powder groove 3131 and can effectively bring out the hot melt adhesive powder in the powder groove 3131 along the opposite direction of the rotation direction of the powder spreading roller 313. Exemplarily, the powder spreading roller 313 rotates counterclockwise. One powder scraping member 315 is disposed in front of the powder spreading roller 313 and is inclined downward; the other powder scraping member 316 is disposed behind the powder spreading roller 313 and is inclined upward.

[0130] The powder scraping member 315 is a brush. The brush is formed with a soft part facing the powder spreading roller 313, and the soft part can be deformed as the powder spreading roller 313 rotates, so as to scrape off the hot melt adhesive powder in the powder groove 3131.

[0131] Figure 14 It is a schematic structural diagram of the powder spreading assembly provided by the present application.

[0132] As Figure 3 and Figure 14 shown, the powder spreading assembly 3 includes a powder storage mechanism 32. The powder storage mechanism 32 is disposed below the buffer assembly 2 and is used for storing and recycling the hot melt adhesive powder.

[0133] The powder storage mechanism 32 includes a powder storage bin 321. The powder storage bin 321 can be used for storing the hot melt adhesive powder. The powder storage bin 321 is formed with an upward powder recovery opening 3215. The excess hot melt adhesive powder on the film material 100 or the hot melt adhesive powder falling from the powder spreading mechanism 31 can be recovered into the powder storage bin 321 through the powder recovery opening 3215, which is convenient for the recycling of the hot melt adhesive powder.

[0134] 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. In this way, not only can the powder recovery port 3215 be ensured to be large enough to receive the hot-melt adhesive powder falling from the powder spraying 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.

[0135] In some embodiments, the powder storage bin 321 includes a powder recovery part 321a and a powder storage part 321b. The powder recovery part 321a is arranged above the powder storage part 321b, and the upper end of the powder recovery part 321a forms the powder recovery port 3215. The cross-sections of both the powder recovery part 321a and the powder storage part 321b gradually decrease from top to bottom. In this way, even when the capacity of the hot-melt adhesive powder is small, it can be easily transferred.

[0136] Furthermore, a grille 325 is arranged at a position in the powder storage bin 321 close to the powder recovery port 3215. The grille 325 is arranged in the powder recovery part 321a, and the edges of the grille 325 are respectively connected to the inner wall of the powder recovery part 321a. By arranging the grille 325, it can be avoided that when there is a large amount of hot-melt adhesive powder in the powder storage bin 321, the airflow generated by the swing of the swing part 21 takes away the hot-melt adhesive powder in the powder storage bin 321.

[0137] The powder storage mechanism 32 includes a powder adding bin 322. The powder adding bin 322 is rotatably and slidably installed in the powder storage bin 321 for storing hot-melt adhesive powder. The powder adding bin 322 has a powder discharging port, and the hot-melt adhesive powder in the powder adding bin 322 can be poured into the powder storage bin 321 through the powder discharging port.

[0138] Figure 15 It is a schematic structural diagram of the baking equipment provided by this application from the second perspective.

[0139] As Figure 3 and Figure 15 shown, a first through hole 3214 is formed on one side wall of the powder storage bin 321, and the powder adding bin 322 passes through the first through hole 3214 and is fixed on the powder storage bin 321.

[0140] Figure 16 It is a schematic internal structural diagram of the powder spraying assembly provided by this application. Figure 17 It is a schematic structural diagram of the powder spraying assembly provided by this application from the second perspective. Figure 18 It is Figure 17 a cross-sectional view along the E-E direction.

[0141] As Figures 16 to 18As shown in the figure, 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 orientation of the powder discharging port of the powder adding bin 322. A first notch 32141 is formed in the upper part of the first through hole 3214, and the third limiting protrusion 3222 is correspondingly adapted to the first notch 32141.

[0142] A first limiting protrusion 3212 and a second limiting protrusion 3213 are formed on the inner wall of the powder storage bin 321 near the first through hole 3214. The first limiting protrusion 3212 is located in the upper part of the first through hole 3214, and the second limiting protrusion 3213 is located in 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 notch 32141 is correspondingly arranged with the third limiting protrusion 3222, and the third limiting protrusion 3222 abuts against the first limiting protrusion 3212. The powder discharging port of the powder adding bin 322 faces upward, and the powder adding bin 322 can be pulled out from the powder storage bin 321. When the powder adding bin 322 rotates until the third limiting protrusion 3222 abuts against the second limiting protrusion 3213, 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.

[0143] In some embodiments, the first limiting protrusion 3212 and the second limiting protrusion 3213 are arranged at two radial ends of the first through hole 3214, and the second limiting protrusion 3213 and the third limiting protrusion 3222 are limited at the bottom of the first through hole 3214. In this way, when the powder adding bin 322 pours the 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 completely fall into the powder storage bin 321.

[0144] When adding the hot melt adhesive powder, rotate the powder adding bin 322 to the position where the third limiting protrusion 3222 abuts against the first limiting protrusion 3212, pull out the powder adding bin 322, add the hot melt adhesive powder into the powder adding bin 322, then insert the powder adding bin 322 into the powder storage bin 321, and rotate the powder adding bin 322 to pour the hot melt adhesive powder in the powder adding bin 322 into the powder storage bin 321. Repeat the operation like this until the powder adding operation is completed.

[0145] A sleeve 3216 is further arranged in the powder storage bin 321. The sleeve 3216 can support the powder adding bin 322 and can rotate relative to each other to make the powder adding bin 322 rotate more smoothly.

[0146] A fourth sensor 323 is provided inside the powder storage bin 321. The fourth sensor 323 can be fixed on the inner wall of the powder storage part 321b of the powder storage bin 321 and is located at the lower position of the powder storage part 321b. 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 addition.

[0147] Furthermore, multiple fourth sensors 323 can be provided at different heights inside the powder storage bin 321 to form different powder addition signals.

[0148] As Figure 15 shown, furthermore, a powder addition port 12 is formed on the housing 1. The powder addition port 12 and the powder addition bin 322 are arranged opposite to each other for taking out the powder addition bin 322. A powder addition cover body 6 is covered on the powder addition port 12 to close the powder addition port 12 and prevent accidental touch of the powder addition bin 322.

[0149] The powder addition cover body 6 can be movably connected to the housing 1. One side of the powder addition cover body 6 can be rotatably connected to the housing 1 through a connecting member. A rebounding member 324 is provided on the outer wall of the powder storage bin 321. The other side of the powder addition cover body 6 can be connected to the powder storage bin 321 through the rebounding member 324 to facilitate the opening and closing of the powder addition cover body 6, thereby facilitating the taking and placing of the powder addition bin 322.

[0150] In this embodiment, the powder addition bin 322 can add 2 kg of hot melt adhesive powder at a time. The powder storage bin 321 can accommodate 4 kg of hot melt adhesive powder. The powder storage bin 321 has a relatively large capacity, which can reduce the powder addition frequency and improve the use experience to a certain extent.

[0151] As Figure 3 and Figure 6 shown, the powder circulation mechanism 33 includes a powder circulation synchronous belt 331, a transmission structure 335, and a fourth motor 332. The powder circulation synchronous belt 331 forms a circulation loop between the powder spreading mechanism 31 and the powder storage mechanism 32. A plurality of protruding tooth parts 3311 are provided on the outer side of the powder circulation synchronous belt 331. The plurality of tooth parts 3311 are spaced apart along the length direction of the powder circulation synchronous belt 331. A space for carrying the hot melt adhesive powder is formed between two adjacent tooth parts 3311. The part of the powder circulation synchronous belt 331 located inside the powder storage mechanism 32 extends to the bottom of the powder storage bin 321. A groove through which the powder circulation synchronous belt 331 passes is formed at the bottom of the powder storage bin 321. During the cyclic movement of the powder circulation synchronous belt 331, the tooth parts 3311 will carry the hot melt adhesive powder in the powder storage bin 321 and move along the groove inside the powder storage bin 321 and rise to the powder spreading bin 311.

[0152] The transmission structure 335 includes a driving wheel 3351 and a plurality of driven wheels 3352. The driving wheel 3351 and the driven wheels 3352 are respectively arranged in the circulating direction of the powder circulating synchronous belt 331. The driving wheel 3351 is in transmission connection with the powder circulating synchronous belt 331, and the driven wheels 3352 are used to change the transmission direction of the powder circulating synchronous belt 335.

[0153] The fourth motor 332 is in transmission connection with the powder circulating synchronous belt 331 and is used to drive the powder circulating synchronous belt 331 to move cyclically along the powder spreading mechanism 31 and the powder storage mechanism 32, so as to transfer the hot melt adhesive powder in the powder storage mechanism 32 to the powder spreading mechanism 31, realizing the powder spreading, recycling and reuse of the hot melt adhesive powder.

[0154] As Figure 6 and Figure 16 shown, a powder guiding groove 3211 is arranged on one side of the powder storage bin 321. The powder guiding groove 3211 extends along the height direction of the powder storage bin 321. The powder circulating synchronous belt 331 is arranged in the powder guiding groove 3211, and the powder circulating synchronous belt 331 can move upward to drive the hot melt adhesive powder to rise from the powder storage bin 321 to the powder spreading bin 311.

[0155] As Figure 6 shown, the powder circulating synchronous belt 331 further includes a powder discharging member 334. The powder discharging member 334 is arranged above the powder spreading bin 311 of the powder spreading mechanism 31, and at least one is arranged along the length direction of the powder spreading bin 311, and is used to transfer the hot melt adhesive powder carried on the powder circulating synchronous belt 331 to the powder spreading bin 311.

[0156] The powder discharging member 334 can cover most of the positions of the powder circulating mechanism 33 in the powder spreading bin 311, so that the hot melt adhesive powder can be transferred to the powder spreading bin 311 more evenly, thereby improving the uniformity of the adhesion of the hot melt adhesive powder on the film material 100. Preferably, a plurality of powder discharging members 334 are arranged at intervals along the length direction of the powder spreading bin 311, which can not only make the hot melt adhesive powder be transferred to the powder spreading bin 311 more evenly, but also reduce the friction force between the powder discharging member 334 and the powder circulating mechanism 33.

[0157] To ensure the normal operation of the powder circulating synchronous belt 331, the powder circulating mechanism 33 further includes a tensioning mechanism 333. The tensioning mechanism 333 passes through the powder storage mechanism 32 and is rotationally connected with the powder circulating synchronous belt 331, and is used to adjust the tension degree of the powder circulating synchronous belt 331.

[0158] In some embodiments, the tensioning mechanism 333 includes a tensioning member 3331 and a tensioning screw 3332. The tensioning member 3331 is disposed in the powder storage bin 321, the powder circulation synchronous belt 331 passes through the tensioning member 3331, and one of the driven wheels 3352 of the powder circulation synchronous belt 331 is rotationally connected to the tensioning member 3331, one end of the tensioning screw 3332 passes through a side wall of the powder storage bin 321 and is connected to the tensioning member 3331, and by adjusting the length of the tensioning screw 3332 screwed into the powder storage bin 321, the tension of the powder circulation synchronous belt 331 can be adjusted to ensure the normal operation of the powder circulation synchronous belt 331.

[0159] like Figure 14 and Figure 16 As shown, the powder sprinkling assembly 3 further includes a powder patting mechanism 34. The powder patting mechanism 34 is disposed on one side of the buffer assembly 2 and fixed on the mounting plate 241. The powder patting mechanism 34 is disposed between the powder sprinkling mechanism 31 and the powder storage mechanism 32. The powder patting mechanism 34 can intermittently pat the film material 100 after the hot melt adhesive is sprinkled, so as to shake off the hot melt adhesive powder that is not adhered to the film material 100. By using the powder patting mechanism 34 to pat the film material 100 after the powder is sprinkled, the uniformity of the hot melt adhesive powder on the film material 100 can be improved.

[0160] Specifically, the powder-beating mechanism 34 includes a fifth motor 341, a rotating shaft 342, and at least one beating member 343 disposed on the rotating shaft 342. The fifth motor 341 is in transmission connection with the rotating shaft 342, and is used to drive the rotating shaft 342 to rotate. When the rotating shaft 342 rotates, the beating member 343 can rotate to the back side of the film material 100 located in the buffer assembly 2, and contact the back side of the film material 100, so as to beat the film material 100, shake off the excess hot melt adhesive powder on the film material 100, and improve the utilization rate of the hot melt adhesive powder.

[0161] The fifth motor 341 can be linked with the printer 02 to estimate the conveying position of the film material 100 through the second sensor 23 and the third sensor 26, and shake the powder when the film material 100 arrives. After the film material 100 completely enters the baking equipment 01, the powder-beating mechanism 34 stops operating.

[0162] When the powder beating mechanism 34 is in operation, the fifth motor 341 cyclically rotates forward and reverse, so that the beating member 343 can produce an intermittent beating action on the film material 100 .

[0163] In some embodiments, a plurality of beating members 343 are provided, and the plurality of beating members 343 are spaced apart along the axial direction of the rotating shaft 342 to cover a wider range of the film material 100 and more effectively shake off excess hot melt adhesive powder on the film material 100 .

[0164] like Figure 14As shown, the flapping member 343 includes a clamping body 3431 and a flexible member 3432 fixed to the end of the clamping body 3431. The clamping body 3431 is fixed to 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 be made of a silica gel member, which has a certain strength and can not only produce an effective flapping effect on the film material 100, but also will not scratch the film material 100.

[0165] Figure 19 It is a schematic structural diagram of the baking assembly provided by the present application. Figure 20 is Figure 19 A sectional view taken along the D-D direction.

[0166] As Figure 3 、 Figure 19 and Figure 20 As shown in, the baking assembly 5 includes a box body 51, a heating element 52 and an exhaust structure 53. An air supply port 511 is formed at the bottom of the box body 51. A first fan 54 is arranged at the bottom of the box body 51 and can supply air into the box body 51. The exhaust structure 53 is communicated with the inside of the box body 51 and can be connected to an external tail gas purification device to discharge the waste gas generated in the box body 51 to the external tail gas purification device.

[0167] As Figure 3 and Figure 8 As shown in and, 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 arranged at the upper part of the box body 51 and is communicated with the inside of the box body 51. The first exhaust pipe 532 is communicated with the air outlet of the exhaust fan 531. The second exhaust pipe 533 is communicated with the first exhaust pipe 532, and the other end of the second exhaust pipe 533 is communicated 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 a Bernoulli fluid is formed in the exhaust structure 53 to improve the exhaust speed of the waste gas in the box body 51.

[0168] Further, the first exhaust pipe 532 and the second exhaust pipe 533 are axially connected and arranged in the baking box body 51, which improves the compactness of the baking equipment 01 to a certain extent and reduces the volume of the baking equipment 01.

[0169] The baking assembly 5 further includes a heating element 52. At least one heating element 52 is configured. The heating element 52 is arranged in the box body 51 and is used for drying the film material 100 passing through the baking assembly 5.

[0170] A plurality of heating elements 52 can be arranged. The plurality of heating elements 52 are spaced apart along the height direction of the box body 51. The heating elements 52 are distributed along the height direction, which reduces the volume of the whole machine to a certain extent.

[0171] Multiple heating elements 52 can be evenly or unevenly spaced. Each heating element 52 can be set to the same power or different powers, which can be specifically determined according to the pattern or material to be dried.

[0172] The baking assembly 5 further includes a first fan 54. By blowing air into the box body 51 through the first fan 54, the convection speed inside the box body 51 can be accelerated, enabling the exhaust gas generated inside the box body 51 to be discharged to the tail gas purification device more quickly through the exhaust structure 53.

[0173] When the film material 100 passes through the baking assembly 5, the film material 100 moves between the box body 51 and the heating elements 52, and the film material 100 is conveyed at least along a trajectory successively parallel to three heating surfaces of the box body 51, so that the travel distance of the film material 100 passing through the baking assembly 5 is longer, improving the drying effect.

[0174] As Figure 8 and Figure 20 As shown, to prevent the film material 100 from being damaged by the heating elements 52, the baking assembly 5 further includes an isolation box 55. The wall of the isolation box 55 is in a mesh shape, and the heating elements 52 are arranged inside the isolation box 55, so that the heating elements 52 are isolated from the film material 100. The isolation box 55 with a mesh structure does not affect the heating effect of the heating elements 52 and can ensure the drying effect of the film material 100.

[0175] As Figure 20 As shown, further, to reduce the heat dissipation inside the baking assembly 5 and prevent the heat generated by the baking assembly 5 from affecting other components of the baking equipment 01, the side wall of the box body 51 has an aluminum foil layer 512 and a heat insulation material layer 513. Further, a mirror layer 514 is formed on the inner wall of the box body 51, and heat radiation is generated on the hot air through the mirror layer 514 to reduce heat dissipation.

[0176] In this embodiment, three heating elements 52 are arranged inside the box body 51, which can meet the drying requirements of most DTF printed parts. Two first fans 54 are provided, and the two first fans 54 are arranged side by side along the bottom of the box body 51 to meet the gas circulation requirements inside the box body 51.

[0177] Further, to prevent the second sub-conveyor belt 411b from overheating and affecting its service life, a plurality of cooling fans are also connected to the outside of the box body 51. The air outlet direction of the cooling fans can be towards the second sub-conveyor belt 411b to accelerate the air flow speed on the surface of the second sub-conveyor belt 411b, thereby improving the cooling effect of the second sub-conveyor belt 411b.

[0178] In summary, the present application realizes the connection of the film material between the printer and the conveying component by arranging a buffer component at the position opposite to the feeding port, realizes the transmission and tension isolation of the film material between the printer and the baking device, and avoids mutual influence between the two. By arranging bosses on the conveying component to engage and fix with the fixing holes on both sides of the film material, the single-piece transmission of the film material is realized, the utilization rate of the film material is improved, and thus the flexibility of customized printing is improved. The transition of the film material between the buffer component and the conveying component is controlled by the cooperation of the first sensor, the second sensor and the third sensor to realize the automatic feeding of the film material. The conveying component realizes the segmented transmission of the film material through the first sub-conveyor belt and the second sub-conveyor belt, and the baking components are distributed along the height direction of the housing, optimizing the layout of the components in the baking device and improving the compactness of the whole machine to a certain extent.

[0179] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions of the present application and its application concept, and these equivalent variations or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A buffer component, characterized in that, The baking equipment also includes a feed port and a conveying component, and the buffer component includes: Bracket; a swinging member, which is disposed on the bracket and can swing relative to the bracket, and has a first position and a second position, wherein the swinging member has a feeding surface with a climbing slope, and when the swinging member is in the first position, two ends of the feeding surface are respectively close to the feeding port and the conveying assembly, and when the swinging member is in the second position, there is a spacing space between the feeding surface and the feeding port; The second motor is disposed on the bracket and is transmission-connected to the swing member, and is used for driving the swing member to swing.

2. The buffer assembly according to claim 1, wherein, The buffer assembly comprises: a first sensor, arranged behind the swing member along the conveying direction, for detecting whether the film material reaches the conveying assembly; and / or, The second sensor has a sensing direction toward the swinging member and is used to detect the position of the swinging member.

3. The buffer assembly according to claim 2, characterized in that, The buffer assembly comprises: The third sensor is arranged below the first position, and is used for detecting whether the film material sags to a preset position when the swing member is located at the second position.

4. The buffer assembly according to claim 1, wherein The bracket includes two mounting plates, which are arranged opposite to each other and are respectively located on both sides of the film material conveying direction; The swinging member includes a first end and a second end, the first end is rotatably connected to one of the mounting plates, and the output shaft of the second motor passes through the other mounting plate and is drivingly connected to the second end.

5. The buffer assembly according to claim 4, wherein The buffer assembly also includes: A limit member is arranged on at least one of the mounting plates and is located on a side of the mounting plate facing the swing member, and is used to cooperate with the swing member during the swinging process of the swing member to limit the swinging range of the swing member.

6. The buffer assembly according to claim 5, characterized in that The second motor is connected to one end of the swinging member close to the transmission assembly, and the limiting member is arranged at one end of the mounting plate away from the transmission assembly.

7. The buffer assembly according to any one of claims 1 to 6, characterized in that, The feeding surface includes a first conveying sub-surface and a second conveying sub-surface that are connected. The first conveying sub-surface and the second conveying sub-surface are both curved surfaces. The first conveying sub-surface is closer to the feed port than the second conveying sub-surface. Along the climbing direction of the feeding surface, the tangent angle of the first conveying sub-surface gradually increases, and the tangent angle of the second conveying sub-surface gradually decreases.

8. The buffer assembly according to any one of claims 1 to 6, characterized in that, The swinging member is provided with a material pressing portion, which is arranged on both sides of the swinging member along the conveying direction and extends toward the middle of the swinging member. A gap suitable for film material to pass through is formed between the material pressing portion and the conveying surface.

9. The buffer assembly according to any one of claims 1 to 6, characterized in that, The swinging member is in a grid shape and has powder leakage holes.

10. A baking device, characterized in that, include: A housing formed with a feed inlet; The buffer assembly according to any one of claims 1 to 9 is arranged corresponding to the feed port.

11. A printing system, characterized in that, include: A printer, used for printing patterns on the film material; as well as, The baking device according to claim 10, wherein the baking device is arranged downstream of the printer and is used to bake the film material.

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