Coating device, coating method and binding system

Abstract

The invention provides a coating device. The coating device comprises a rotating mechanism, a preheating part, a coating mechanism and a slicking assembly. The rotating mechanism is used for driving the back pipe to rotate around the axis of the back pipe. The preheating piece, the coating mechanism and the slicking assembly are arranged in the axial direction of the back pipe in a reciprocating motion mode. The coating mechanism and the slicking assembly are arranged at intervals in the axial direction of the back pipe, the coating mechanism is used for coating molten brazing filler metal on the outer wall of the back pipe, and the slicking assembly is used for slicking the brazing filler metal coated on the outer wall of the back pipe. The rotating mechanism drives the back pipe to rotate, meanwhile, the preheating part, the coating mechanism and the slicking assembly sequentially move from one end of the back pipe to the other end of the back pipe, in the moving process, the preheating part preheats the outer wall of the back pipe, then the coating mechanism coats molten brazing filler metal on the outer wall of the back pipe, and then the slicking assembly slicks the brazing filler metal coated on the outer wall of the back pipe. Therefore, more time and labor are saved, and the coating efficiency is improved. The invention further provides a coating method and a binding system.

Description

Technical Field

[0001] The invention belongs to the technical field of rotating target material manufacturing, and in particular relates to a coating device, a coating method and a binding system. Background Art

[0002] For non-integrally cast rotating targets, it is usually necessary to bind the target cylinder and the back tube together to form a reliable connection. Before binding the target cylinder and the back tube, it is necessary to coat the outer wall of the back tube and the inner wall of the target cylinder with the same brazing material, such as indium, tin, etc. After the brazing material is melted, the back tube and the target cylinder are connected together. The outer wall of the existing back tube is usually coated manually with a handheld ultrasonic coating probe, which is time-consuming, labor-intensive and inefficient. Summary of the invention

[0003] The technical problem to be solved by the present invention is that coating the brazing material on the outer wall of the back tube by manually holding an ultrasonic coating probe is time-consuming, labor-intensive and inefficient. In order to solve the above technical problem, a coating device, coating method and binding system with higher efficiency are provided.

[0004] The technical solution proposed by the present invention is: A coating device, comprising: The rotating mechanism is used to drive the back tube to rotate around its own axis; A preheating element is arranged to be reciprocatingly movable along the axial direction of the back tube, and the preheating element is used to heat the outer wall of the back tube; The coating mechanism and the scraping assembly are both arranged to be reciprocatingly movable along the axial direction of the back tube, and the coating mechanism and the scraping assembly are arranged at intervals along the axial direction of the back tube. The coating mechanism is used to coat the molten solder on the outer wall of the back tube, and the scraping assembly is used to scrape the solder coated on the outer wall of the back tube.

[0005] Furthermore, the preheating element can reciprocate along the axial direction of the back tube relative to the coating mechanism and the scraping assembly, and the preheating element can also reciprocate along the radial direction of the back tube.

[0006] Furthermore, the coating mechanism includes a feeding assembly and a coating assembly, the feeding assembly and the coating assembly can move synchronously along the axial direction of the back tube, the feeding assembly is used to transport molten solder to the outer wall of the back tube, and the coating assembly is used to coat the molten solder on the outer wall of the back tube.

[0007] Furthermore, the coating assembly includes an ultrasonic generator and a coating head, the ultrasonic generator is connected to the coating head, and the coating head is arranged toward the outer wall of the back tube to coat the molten solder on the outer wall of the back tube.

[0008] Furthermore, the feeding assembly includes a storage cup, a heating element, a feeding pipe and a feeding valve. The storage cup is capable of storing molten solder. The heating element is arranged on the storage cup and the feeding pipe. One end of the feeding pipe is connected to the storage cup, and the other end extends toward the outer wall of the back tube and is located on the moving path of the coating assembly. The feeding valve is arranged on the feeding pipe.

[0009] Furthermore, the coating mechanism also includes a first adjusting drive member and a first mounting plate, the first adjusting drive member is reciprocatingly arranged along the axial direction of the back tube, and the first adjusting drive member is connected to the first mounting plate to drive the first mounting plate to reciprocate radially along the back tube, and the feeding assembly and the coating assembly are both arranged on the first mounting plate.

[0010] Furthermore, the scraping assembly includes a second adjusting drive member, a second mounting plate and a scraper. The second adjusting drive member is reciprocatingly arranged along the axial direction of the back tube and is connected to the second mounting plate to drive the second mounting plate to reciprocate radially along the back tube. The scraper is arranged on the second mounting plate and is used to scrape the solder coated on the outer wall of the back tube.

[0011] A coating method comprising the steps of: S110, driving the back tube to rotate around its own axis through the rotating mechanism; S120, controlling the preheating element, the coating mechanism and the scraping assembly to move along the axial direction of the back tube, and move from the head end to the tail end of the back tube; During the movement, the preheating element first heats the outer wall of the back tube, and then the coating mechanism coats the molten solder on the outer wall of the back tube, and the scraping assembly scrapes the solder coated on the outer wall of the back tube.

[0012] Further, in step S120: The preheating element first heats the head end of the back tube for a first preset time, and then the preheating element, the coating mechanism and the scraping assembly move toward the end, and the preheating element, the coating mechanism and the scraping assembly move a preset distance every second preset time; Wherein, the first preset time is greater than the second preset time.

[0013] A binding system comprises the coating device and / or the coating method as described above.

[0014] The above-mentioned coating device is used to place the back tube on the rotating mechanism, and the back tube is driven to rotate by the rotating mechanism. At the same time, the preheating part, the coating mechanism and the scraping assembly move from one end of the back tube to the other end in sequence. During the movement, the preheating part first preheats the outer wall of the back tube, and then the coating mechanism coats the molten solder on the outer wall of the back tube, and the scraping assembly then scrapes the solder coated on the outer wall of the back tube. In this way, compared with manual coating, it is more time-saving and labor-saving, and the coating efficiency is improved; and after the solder is coated, it can also be scraped by the scraping assembly, which improves the uniformity of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0016] Figure 1 A schematic structural diagram of a coating device provided in one embodiment of the present invention; Figure 2 for Figure 1 The enlarged schematic diagram of the structure at location A of the coating device is shown.

[0017] Description of labels: 10. Coating device; 20. Back tube; 100. Rotating mechanism; 200. Preheating element; 300. Coating mechanism; 310. Feeding assembly; 311. Storage cup; 312. Heating element; 313. Feeding pipe; 314. Feeding valve; 320. Coating assembly; 321. Ultrasonic generator; 322. Coating head; 330. First adjusting drive element; 340. First mounting plate; 400. Scraping assembly; 410. Second adjusting drive element; 420. Second mounting plate; 430. Scraper. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In order to facilitate understanding of the technical solution of the present application, the operation of applying the brazing material to the outer wall of the back tube by using an existing manual handheld ultrasonic coating probe is described here: First, pour the solder on the outer wall of the back tube, and then use the ultrasonic coating probe to coat the solder on the outer wall of the back tube. Manual operation has the following defects: 1. The addition and coating of the solder require division of labor, that is, at least two people are required to operate; 2. Manually pouring the solder on the outer wall of the back tube cannot accurately control the amount of solder, which usually causes waste of solder; 3. The temperature of the equipment is high during the coating process, which is dangerous; 4. The coating with a handheld ultrasonic coating probe cannot guarantee the uniformity of the coating. Therefore, as mentioned above, manual operation for coating of the solder is time-consuming and labor-intensive, inefficient, and there are certain risks and problems such as the inability to guarantee the uniformity of the coating.

[0021] Based on this, on the one hand, the present application provides a coating device, which can coat the outer wall of the back tube with solder without the need for manual handheld ultrasonic coating probe for coating, thereby improving safety, ensuring the uniformity of coating, and saving time and effort, thereby improving coating efficiency.

[0022] like Figure 1 As shown, the coating device 10 includes a rotating mechanism 100, a preheating member 200, a coating mechanism 300 and a scraping assembly 400. The rotating mechanism 100 can be connected to the back tube 20 to drive the back tube 20 to rotate around its own axis; the preheating member 200 is arranged to be reciprocatingly movable along the axial direction of the back tube 20, and the preheating member 200 is used to heat the outer wall of the back tube 20; the coating mechanism 300 and the scraping assembly 400 are also arranged to be reciprocatingly movable along the axial direction of the back tube 20, and the coating mechanism 300 and the scraping assembly 400 are arranged at intervals along the axial direction of the back tube 20. The coating mechanism 300 is used to apply the molten solder to the outer wall of the back tube 20, and the scraping assembly 400 is used to scrape the solder applied to the outer wall of the back tube 20 to ensure the uniformity of the solder coating.

[0023] The coating device 10 is used to place the back tube 20 on the rotating mechanism 100, and the back tube 20 is driven to rotate by the rotating mechanism 100. At the same time, the preheating member 200, the coating mechanism 300 and the scraping assembly 400 move from one end of the back tube 20 to the other end in sequence. During the movement, the preheating member 200 first preheats the outer wall of the back tube 20, and then the coating mechanism 300 coats the molten solder on the outer wall of the back tube 20, and the scraping assembly 400 scrapes the solder coated on the outer wall of the back tube 20. In this way, compared with manual coating, it is more time-saving and labor-saving, and the coating efficiency is improved; and after the solder is coated, it can also be scraped by the scraping assembly 400, which improves the uniformity of coating.

[0024] In addition, it should be noted that the outer wall of the back tube 20 is first preheated by the preheating member 200, and then the coating mechanism 300 coats the molten solder on the outer wall of the back tube 20, which can prevent the molten solder from cooling down too quickly and solidifying, thereby facilitating the subsequent scraping component 400 to scrape the molten solder flat.

[0025] In one embodiment, the coating device 10 further includes a first translation driving member, which is connected to the preheating member 200 to drive the preheating member 200 to reciprocate along the axial direction of the back tube 20, so as to realize the preheating member 200 to move from one end to the other end of the back tube 20, and heat the outer wall of the back tube 20 in the process. For ease of understanding, the two ends of the back tube 20 are defined as the head end and the tail end respectively below, and the preheating member 200, the coating mechanism 300 and the scraping assembly 400 all move from the head end to the tail end. Figure 1 The beginning is the left end and the end is the right end.

[0026] Furthermore, the coating device 10 further includes a second translation drive, which is connected to the coating mechanism 300 and the scraping assembly 400 to drive the coating mechanism 300 and the scraping assembly 400 to synchronously reciprocate along the axial direction of the back tube 20. At the same time, it can be determined that during the coating process, the coating mechanism 300 is located between the preheating member 200 and the scraping assembly 400, and the preheating member 200 is in front. Optionally, the first translation drive and the second translation drive are electric cylinders, linear modules, etc.

[0027] It can be seen from the above embodiments that the preheating member 200 can reciprocate along the axial direction of the back tube 20 relative to the coating mechanism 300 and the scraping assembly 400, that is, the preheating member 200 can move independently. In a preferred embodiment, the preheating member 200 can also reciprocate along the radial direction of the back tube 20 to get close to and away from the back tube 20. After the preheating member 200 moves to the end, the preheating member 200 is controlled to be away from the back tube 20 in the radial direction of the back tube 20, so as to avoid the coating mechanism 300 and the scraping assembly 400, so that the coating mechanism 300 and the scraping assembly 400 can continue to move to the end. Optionally, the coating device 10 also includes an avoidance drive member, and the first translation drive member is connected to the avoidance drive member to drive the avoidance drive member to reciprocate along the axial direction of the back tube 20, and the avoidance drive member is connected to the preheating member 200 to drive the preheating member 200 to reciprocate along the radial direction of the back tube 20. Among them, the avoidance drive member can be a cylinder, an electric cylinder, etc.

[0028] In other embodiments, the preheating element 200, the coating mechanism 300 and the scraping assembly 400 may also move synchronously. When the coating mechanism 300 and the scraping assembly 400 move to the end, the preheating element 200 moves out of the corresponding area of ​​the back tube 20. However, the preheating element 200 is a heat source. In order to prevent the preheating element 200 from affecting the operation of other mechanisms in the area outside the back tube 20, it is preferred to move the preheating element 200 along the radial direction of the back tube 20 so that the preheating element 200 avoids the coating mechanism 300 and the scraping assembly 400. Figure 1 In the illustrated embodiment, the preheating member 200 stops moving in the axial direction of the back tube 20 when it is completely moved out of the end, and then starts moving away from the back tube 20 in the radial direction of the back tube 20. In addition, it should be explained that the preheating member 200 is driven to avoid the position by the avoidance driving member, and the avoidance driving member and the preheating member 200 can be connected by a transmission structure to avoid affecting the operation of the coating mechanism 300 and the scraping assembly 400.

[0029] Please also see Figure 2 In one embodiment, the coating mechanism 300 includes a feed assembly 310 and a coating assembly 320. The feed assembly 310 and the coating assembly 320 can move synchronously along the axial direction of the back tube 20. The feed assembly 310 is used to transport molten solder to the outer wall of the back tube 20, and the coating assembly 320 is used to coat the molten solder on the outer wall of the back tube 20. The feed assembly 310 and the coating assembly 320 are independently arranged according to their functions, which effectively simplifies the structure and facilitates subsequent maintenance. At the same time, in this embodiment, the feed assembly 310 stores molten solder at a relatively high temperature, and is arranged separately from the coating assembly 320 to avoid high temperature damage or influence on the coating assembly 320.

[0030] In one embodiment, the coating mechanism 300 further includes a first adjusting driving member 330 and a first mounting plate 340. The first adjusting driving member 330 is connected to the second translation driving member so as to reciprocate along the axial direction of the back tube 20 under the action of the second translation driving member. The first adjusting driving member 330 is connected to the first mounting plate 340 so as to drive the first mounting plate 340 to reciprocate along the radial direction of the back tube 20. The feeding assembly 310 and the coating assembly 320 are both arranged on the first mounting plate 340. Thus, in this embodiment, the feeding assembly 310 and the coating assembly 320 can be driven by the first adjusting driving member 330 to approach and move away from the back tube 20, so as to adjust the positions of the feeding assembly 310 and the coating assembly 320 according to actual needs, for example, according to the diameter of the back tube 20, so as to control the distance between the feeding assembly 310 and the coating assembly 320 and the outer wall of the back tube 20. Optionally, the first adjusting driving member 330 is a cylinder, an electric cylinder, etc.

[0031] In one embodiment, the feed assembly 310 includes a storage cup 311, a heating element 312 and a feed pipe 313. The storage cup 311 is disposed on the first mounting plate 340 and is capable of storing molten solder. The heating element 312 is disposed on the storage cup 311 and is used to heat the storage cup 311 to ensure that the solder in the storage cup 311 remains in a molten state. One end of the feed pipe 313 is connected to the storage cup 311 and the other end extends toward the outer wall of the back tube 20, so that the molten solder in the storage cup 311 can be transported to the outer wall of the back tube 20 through the feed pipe 313. In combination with the above description, it can be seen that the first adjustment drive 330 can adjust the distance between the feed pipe 313 and the outer wall of the back tube 20 to ensure that the solder output by the feed pipe 313 is transported to a preset position on the outer wall of the back tube 20.

[0032] In other embodiments, the heating element 312 can also be disposed on both the storage cup 311 and the feed pipe 313 to ensure that the solder delivered to the outer wall of the back tube 20 is in a molten state, and to prevent the solder from solidifying in the feed pipe 313 and causing blockage. Figure 1 As shown), the feeding piece at the feeding pipe 313 can be set as a heating coil.

[0033] Furthermore, the feed assembly 310 further includes a feed valve 314, which is disposed on the feed pipe 313 and is used to control the on-off of the feed pipe 313, thereby controlling the delivery of the molten solder. Optionally, the feed valve 314 is a high temperature resistant electromagnetic valve.

[0034] In one embodiment, the coating assembly 320 includes an ultrasonic generator 321 and a coating head 322. The ultrasonic generator 321 is disposed on the first mounting plate 340 and connected to the coating head 322. The coating head 322 is disposed toward the outer wall of the back tube 20 to coat the molten solder on the outer wall of the back tube 20. It should be explained that ultrasonic coating can make the solder and the outer wall of the back tube 20 combine at the molecular level to ensure the firmness of the solder coating. In combination with the above description, it can be known that the distance between the coating head 322 and the outer wall of the back tube 20 can be adjusted by the first adjustment drive member 330, so as to achieve a better coating effect; at the same time, the other end of the above-mentioned feed pipe 313 is also disposed toward the coating head 322, so that after conveying the molten solder to the outer wall of the back tube 20, the coating head 322 can directly coat, or can coat without moving a long distance, so as to avoid cooling and solidification of the molten solder during the coating process.

[0035] In one embodiment, the scraping assembly 400 includes a second adjustment drive member 410, a second mounting plate 420 and a scraper 430. The second adjustment drive member 410 is connected to the second translation drive member to reciprocate along the axial direction of the back tube 20 under the action of the second translation drive member; the second adjustment drive member 410 is connected to the second mounting plate 420 to drive the second mounting plate 420 to reciprocate along the radial direction of the back tube 20. The scraper 430 is arranged on the second mounting plate 420 to approach and move away from the outer wall of the back tube 20 with the second mounting plate 420. The scraper 430 is used to scrape the brazing material coated on the outer wall of the back tube 20. Optionally, the second adjustment drive member 410 is a cylinder, an electric cylinder, etc.

[0036] It should be explained that, in the actual coating process, the feeding component 310 conveys a certain amount of molten solder to the outer wall of the back tube 20. At this time, the molten solder is in the form of droplets. The coating component 320 cooperates with the rotating back tube 20 to spread the solder around the outer wall of the back tube 20 to form a solder layer. At this time, the solder layer will be slightly thicker than the required thickness. The solder layer can be scraped flat by the scraping component 400, and the thickness of the solder layer meets the requirements.

[0037] In addition, it should be noted that it is difficult to control the amount of solder when manually pouring the molten solder on the outer wall of the back tube 20, and more solder is usually poured for the convenience of coating; in this embodiment, although the feeding assembly 310 will deliver more solder than the required amount, it is still less than the amount of manual pouring. Moreover, in this embodiment, a larger amount is delivered first, which can facilitate the subsequent leveling of the leveling assembly 400 and improve uniformity.

[0038] On the other hand, based on the above-mentioned coating device 10, the present application also discloses a coating method, which can coat the molten solder on the outer wall of the backing tube 20. As an example, the coating method includes the steps of: S110, driving the back tube 20 to rotate around its own axis through the rotating mechanism 100.

[0039] S120, controlling the preheating element 200, the coating mechanism 300 and the scraping assembly 400 to move along the axial direction of the back tube 20, and the head end of the back tube 20 moves toward the tail end.

[0040] During the movement, the preheating member 200 first heats the outer wall of the back tube 20 , and then the coating mechanism 300 coats the molten solder on the outer wall of the back tube 20 , and the scraping assembly 400 scrapes the solder coated on the outer wall of the back tube 20 to make it flat.

[0041] With the above coating method, the rotating mechanism 100 drives the back tube 20 to rotate, and at the same time, the preheating member 200, the coating mechanism 300 and the scraping assembly 400 move from the head end to the tail end of the back tube 20 in sequence. During the movement, the preheating member 200 first preheats the outer wall of the back tube 20, and then the coating mechanism 300 coats the molten solder on the outer wall of the back tube 20, and the scraping assembly 400 scrapes the solder coated on the outer wall of the back tube 20. In this way, compared with manual coating, it is more time-saving and labor-saving, and the coating efficiency is improved; and after the solder is coated, it can also be scraped by the scraping assembly 400, which improves the uniformity of coating.

[0042] In step S120, the preheating element 200 first heats the head end of the back tube 20 for a first preset time, and then the preheating element 200, the coating mechanism 300 and the scraping assembly 400 move toward the end, and the preheating element 200, the coating mechanism 300 and the scraping assembly 400 move a preset distance every second preset time. The first preset time is greater than the second preset time.

[0043] It needs to be explained that Figure 1 As shown, the heating area of ​​the back tube 20 by the preheating member 200 is larger than the coating area of ​​the coating mechanism 300. Initially, the temperature of the back tube 20 is relatively low. In order to ensure that the temperature of the coating area on the back tube 20 meets the requirements, a relatively long heating time is required. After the preheating is completed, the distance of each movement of the preheating member 200, the coating mechanism 300 and the scraping assembly 400 is limited by the width of the coating area (the range of the coating area in the axial direction of the back tube 20). Therefore, after each movement of the preheating member 200, the heating area of ​​the previous position and the heating area of ​​the current position will partially overlap. For the overlapping area, the preheating member 200 mainly plays a role in heat preservation, so there is no need to heat for too long, and the time can be determined according to the coating time, so that the first preset time is greater than the second preset time.

[0044] In addition, initially, the preheating member 200 is arranged corresponding to the head end of the back tube 20, and the coating mechanism 300 and the scraping assembly 400 are located outside the back tube 20. In the process of the preheating member 200 moving toward the end, the coating mechanism 300 and the scraping assembly 400 will gradually move to the position corresponding to the back tube 20. Before the coating mechanism 300 moves to the position corresponding to the head end of the back tube 20, the preheating member 200, the coating mechanism 300 and the scraping assembly 400 can maintain a uniform motion and move toward the end; when the coating mechanism 300 moves to the position corresponding to the head end of the back tube 20, the coating mechanism 300 can start to coat the outer wall of the back tube 20, and at this time, the preheating member 200, the coating mechanism 300 and the scraping assembly 400 can move the preset distance every second preset time as described above.

[0045] Of course, after the preheating element 200 completes heating of the front end of the back tube 20, the preheating element 200, the coating mechanism 300 and the scraping assembly 400 may start to move a preset distance every second preset time until the coating and scraping of the outer wall of the back tube 20 are completed.

[0046] In order to facilitate understanding of the technical solution of this application, Figure 1 The coating device 10 and the coating method are described with a specific embodiment: The back tube 20 is clamped and fixed on the rotating mechanism 100. The conical structure can be used to clamp the two ends of the back tube 20, and the clamping force is set according to the weight of the back tube 20 and other parameters to ensure the stability of the clamping. Next, the preheating part 200 is moved to the head end of the back tube 20, and the left surface of the preheating part 200 is flush with the end surface of the head end of the preheating part 200. The coating mechanism 300 and the scraping assembly 400 are located on the left side of the preheating part 200, and the coating assembly 320 and the feeding assembly 310 in the coating mechanism 300 and the scraper 430 in the scraping assembly 400 are in a raised state, that is, they are set away from the back tube 20 to avoid the rotating mechanism 100.

[0047] It should be noted that at this time, molten solder can be added into the storage cup 311, and the heating element 312 is turned on to heat the storage cup 311 and the feed pipe 313, the heating temperature is set to 180-200°C, and the feed valve 314 is in a closed state.

[0048] The back tube 20 is rotated, and the preheating member 200 heats the head end of the back tube 20 at the same time. The heating time is 200-300s. After the heating is completed, the preheating member 200, the coating mechanism 300 and the scraping assembly 400 move to the right synchronously, and move 1mm to the right every 1s. During the movement, the coating mechanism 300 first enters the head end of the back tube 20, and the first adjustment drive member 330 drives the first mounting plate 340 to descend, so that the feed pipe 313 and the coating head 322 are close to the outer wall of the back tube 20; the feed valve 314 is opened, and the dripping speed of the solder is controlled to 5-10 drops / s through the feed valve 314, and ultrasonic coating is started through the coating head 322. After the scraping assembly 400 enters the head end of the back tube 20 , the second adjusting drive 410 drives the second mounting plate 420 to descend, and the scraper 430 approaches the outer wall of the back tube 20 to scrape the brazing material coated on the outer wall of the back tube 20 flat.

[0049] After the preheating member 200 moves to the end of the back tube 20, it continues to move to the right until the left surface of the preheating member 200 is flush with the end surface of the back tube 20. Next, the preheating member 200 stops heating, and the avoidance drive member drives the preheating member 200 away from the back tube 20, and the coating mechanism 300 and the scraping assembly 400 continue to move to the right; after the coating mechanism 300 completes the coating of the end of the back tube 20, the feed valve 314 and the ultrasonic generator 321 stop working, and the first adjustment drive member 330 drives the first mounting plate 340 away from the back tube 20; the coating mechanism 300 continues to move to the right with the scraping assembly 400, and after the scraper 430 completes the scraping operation of the end of the back tube 20, the coating mechanism 300 and the scraping assembly 400 stop moving, and the second adjustment drive member 410 drives the scraper 430 to lift up, and the coating of the back tube 20 is completed.

[0050] On the other hand, based on the above-mentioned coating device 10 and coating method, the present application also provides a binding system, which includes the above-mentioned coating device 10 and / or adopts the above-mentioned coating method.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coating device, characterized in that: include: The rotating mechanism is used to drive the back tube to rotate around its own axis; A preheating element is arranged to be reciprocatingly movable along the axial direction of the back tube, and the preheating element is used to heat the outer wall of the back tube; The coating mechanism and the scraping assembly are both arranged to be reciprocatingly movable along the axial direction of the back tube, and the coating mechanism and the scraping assembly are arranged at intervals along the axial direction of the back tube. The coating mechanism is used to coat the molten solder on the outer wall of the back tube, and the scraping assembly is used to scrape the solder coated on the outer wall of the back tube.

2. The coating device according to claim 1, characterized in that: The preheating element can reciprocate along the axial direction of the back tube relative to the coating mechanism and the scraping assembly, and the preheating element can also reciprocate along the radial direction of the back tube.

3. The coating device according to claim 1, characterized in that: The coating mechanism includes a feeding assembly and a coating assembly. The feeding assembly and the coating assembly can move synchronously along the axial direction of the back tube. The feeding assembly is used to transport molten solder to the outer wall of the back tube, and the coating assembly is used to coat the molten solder on the outer wall of the back tube.

4. The coating device according to claim 3, characterized in that: The coating assembly comprises an ultrasonic generator and a coating head, wherein the ultrasonic generator is connected to the coating head, and the coating head is arranged toward the outer wall of the back tube so as to coat the molten solder on the outer wall of the back tube.

5. The coating device according to claim 3, characterized in that: The feeding assembly includes a storage cup, a heating element, a feeding pipe and a feeding valve. The storage cup can store molten solder. The heating element is arranged on the storage cup and the feeding pipe. One end of the feeding pipe is connected to the storage cup, and the other end extends toward the outer wall of the back tube and is located on the moving path of the coating assembly. The feeding valve is arranged on the feeding pipe.

6. The coating device according to claim 3, characterized in that: The coating mechanism also includes a first adjusting drive member and a first mounting plate. The first adjusting drive member is reciprocatingly arranged along the axial direction of the back tube, and the first adjusting drive member is connected to the first mounting plate to drive the first mounting plate to reciprocate radially along the back tube. The feeding assembly and the coating assembly are both arranged on the first mounting plate.

7. The coating device according to claim 1, characterized in that: The scraping assembly includes a second adjusting drive member, a second mounting plate and a scraper. The second adjusting drive member is reciprocatingly arranged along the axial direction of the back tube and is connected to the second mounting plate to drive the second mounting plate to reciprocate radially along the back tube. The scraper is arranged on the second mounting plate and is used to scrape the solder coated on the outer wall of the back tube.

8. A coating method, characterized in that: Includes steps: S110, driving the back tube to rotate around its own axis through the rotating mechanism; S120, controlling the preheating element, the coating mechanism and the scraping assembly to move along the axial direction of the back tube, and move from the head end to the tail end of the back tube; During the movement, the preheating element first heats the outer wall of the back tube, and then the coating mechanism coats the molten solder on the outer wall of the back tube, and the scraping assembly scrapes the solder coated on the outer wall of the back tube.

9. The coating method according to claim 8, characterized in that: In step S120: The preheating element first heats the head end of the back tube for a first preset time, and then the preheating element, the coating mechanism and the scraping assembly move toward the end, and the preheating element, the coating mechanism and the scraping assembly move a preset distance every second preset time; Wherein, the first preset time is greater than the second preset time.

10. A binding system, characterized in that: It comprises the coating device according to any one of claims 1 to 7 and / or the coating method according to claim 8 or 9.

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