Scraper tin spraying device and method

Abstract

The invention discloses a scraper tin spraying device and method. The device comprises a base, and a rotating mechanism, a nozzle and a scraper are fixedly arranged on the base; the steel mesh is provided with a material storage channel, and the material storage channel is used for storing a target material; the rotating mechanism is used for driving the steel mesh to rotate; a nozzle for spraying a target material; the scraper is used for scraping the target material into the material storage channel; the tin spraying method comprises the steps that the rotating mechanism is started to drive the steel mesh to rotate together; a target material is added to the steel mesh; in the rotating process, the target material is scraped into a material storage channel of the steel mesh by the scraper; after the steel mesh rotates, the material storage channel storing the target material is aligned with a jet orifice of the nozzle; and the nozzle is started, and air pressure is applied through the nozzle air channel to eject out the materials at the material storage channel. By means of the tin brushing device, efficient tin brushing of uneven samples can be achieved, meanwhile, tin brushing uniformity is considered, and the problem of needle blocking does not exist.

Description

Technical Field

[0001] The invention relates to the technical field of packaging, and in particular to a scraper tin spraying device and method. Background Art

[0002] In the field of semiconductor packaging, LED packaging and SMT, the existing technologies for dispensing solder paste mainly use steel mesh brushing, piezoelectric valve spraying, extrusion type soldering or dipping type soldering. These existing technologies currently have the following technical problems:

[0003] Among them, tin brushing of steel mesh needs to fit the product pad surface and produce large-format steel mesh, so it is mainly used for large-scale processing of flat PCB substrates. It has poor applicability for products with expansion and contraction adaptation and uneven surfaces (such as warping, flexible bending or deep cavity structures) and products with small quantities of proofing.

[0004] The striker of the piezoelectric valve tin spraying needs to have hard contact with the nozzle head, which will deform the solder paste particles at the contact point and cause a common problem of nozzle clogging. Therefore, the current piezoelectric valve tin spraying is mostly used for large-size PCB pads, usually with a point diameter of more than 200μm. The smaller the tin spraying size, the more frequent the nozzle clogging phenomenon.

[0005] Extrusion tinning and dipping tinning are both contact tinning. Both require the needle to contact the PCB pad, so the motor has a long waiting time for contact, so the tinning efficiency is low, usually below 5Hz per point.

[0006] In addition, due to the uneven solder paste particles, the viscosity of the solder paste fluctuates greatly, and piezoelectric valve tin spraying, extrusion tin dispensing, and dipping tin dispensing all have the problem of poor uniformity of dot diameter.

[0007] Therefore, it is urgent to develop a device and method suitable for tinning uneven samples while taking into account both tinning uniformity and tin spraying efficiency. Summary of the invention

[0008] In view of this, the present invention provides a scraper tin spraying device and method to solve the technical problems that the prior art is not suitable for tinning uneven samples, or does not take into account both tinning uniformity and tin spraying efficiency.

[0009] In a first aspect, the present invention provides a scraper tin spraying device, comprising:

[0010] A base, on which a rotating mechanism, a nozzle and a scraper are fixedly arranged;

[0011] A steel mesh, wherein a material storage channel is provided on the steel mesh, wherein the material storage channel is used to store the target material, and the steel mesh is fixed on the rotating mechanism;

[0012] A rotating mechanism, the rotating mechanism is used to drive the steel mesh to rotate;

[0013] a nozzle for ejecting a target material;

[0014] The scraper is used for scraping the target material into the material storage channel.

[0015] Furthermore, the rotating mechanism drives the steel mesh to rotate until the storage channel storing the target material is aligned with the injection port of the nozzle, and the diameter of the injection port is larger than that of the storage channel.

[0016] Furthermore, the opening of the material storage channel can be designed according to the injection point diameter requirement, and the opening shape can be square or circular, etc., and there is no specific limitation on the shape.

[0017] Furthermore, the steel mesh is circular, and a plurality of material storage channels are provided on the steel mesh. The material storage channels are provided in at least one circle on the steel mesh, and each circle of material storage channels is provided at the same distance from the center of the circular steel mesh.

[0018] Furthermore, the target material, that is, the material to be sprayed, is preferably solder paste.

[0019] Furthermore, a material storage tube is provided on the base, and the material storage tube is used to store the target material, and can be fixed on the base with a universal Luer connector, and is compatible with 3cc to 30cc.

[0020] Furthermore, the nozzle is provided with a nozzle gas path, the cross section of the nozzle gas path is funnel-shaped, and the nozzle gas path runs through the entire nozzle. Specifically, the position of the nozzle is not specifically limited and can be adjusted according to actual conditions.

[0021] Furthermore, a steel sheet fixing base is provided under the steel mesh sheet to better fix the steel mesh sheet.

[0022] Furthermore, the rotating component includes a rotating shaft and a rotating base, and the steel sheet fixed base and the steel mesh are fixed on the rotating base; specifically, the rotating shaft is connected to a motor, and the motor can drive the rotating shaft to drive the rotating base and the steel mesh and steel sheet fixed base fixed on the rotating base to rotate together.

[0023] Furthermore, the smaller the thickness of the steel mesh, the more stable the process of this solution, but at the same time, a certain thickness must be ensured for storing the target material. If the thickness is too large, the scraper will not be able to fill the material in the storage channel, resulting in a large nozzle jet resistance. Therefore, the thickness of the steel mesh is controlled to be 20-200 μm; the ratio W of the storage channel diameter to the steel mesh thickness satisfies: 2 <W≤10。

[0024] Furthermore, the scraper is installed on the base at an angle, and the inclination angle needs to be adjusted according to factors such as material properties, steel mesh thickness and opening size. The inclination angle is generally controlled to be 45° to 60°. The smaller the inclination angle, the greater the downward pressure, and the rotation speed of the steel mesh should be slowed down accordingly to facilitate scraping the target material into the storage channel.

[0025] Furthermore, a steel sheet support portion is provided below the injection port of the nozzle, which is beneficial to strengthening the strength of the steel mesh and also beneficial to providing support on all sides when the nozzle is spraying, thereby increasing the service life of the steel sheet; a spray notch is provided on the steel sheet support portion.

[0026] Furthermore, the upper opening of the injection notch is larger than the material storage channel, and the lower opening of the injection notch is larger than or equal to the upper opening.

[0027] Furthermore, a steel sheet support portion is provided below the scraper to enhance the scraping of the target material into the material storage channel.

[0028] Furthermore, the base is also provided with a material detection optical fiber and an opening filling detection component. The material detection optical fiber is used to detect the remaining material at the scraper position. If the material is too little, a part of the material in the storage tube is squeezed out onto the steel mesh to realize automatic feeding; the opening filling detection component is used to detect whether the opening material is filled. If the filling is abnormal, it will not be triggered when it is transferred to the injection port. If there is no abnormality in the detection, the target material will be sprayed normally.

[0029] Furthermore, the opening filling detection component can be either a detection sensor or a CCD camera using a visual solution for recognition.

[0030] In a second aspect, the present invention provides a scraper tin spraying method, the method comprising:

[0031] Start the rotating mechanism to make it drive the steel mesh to rotate together;

[0032] The spray material in the storage tube is squeezed onto the steel mesh by air pressure;

[0033] During the rotation, the scraper scrapes the target material into the storage channel of the steel mesh;

[0034] After the steel mesh is rotated, the storage channel storing the target material is aligned with the injection port of the nozzle;

[0035] Start the nozzle and apply air pressure through the nozzle to spray the material in the storage channel out.

[0036] Furthermore, the rotation speed during the rotation process is controlled to be 0.1-50 rpm, which can be adjusted according to actual process requirements; in addition, when the storage channel is positioned to align with the injection port to prepare for injection of material, the rotation axis can be controlled to appropriately increase the residence time to improve injection stability.

[0037] The scraper tin spraying device and method provided by the present invention have the following beneficial effects: the scraper tin spraying device can realize efficient tin brushing for uneven samples through the mutual cooperation of the rotating mechanism and the nozzle, while taking into account the uniformity of tin brushing and there is no problem of needle clogging; in addition, the device can also realize automatic feeding and automatic detection of material filling status, and is an automated processing equipment with good application prospects in actual industrial manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic structural diagram of the scraper tin spraying device of the present invention;

[0039] Figure 2 is a top view of the scraper tin spraying device of the present invention;

[0040] Figure 3 It is a structural schematic diagram of the steel mesh of the present invention;

[0041] Figure 4 This is a schematic diagram of the structure of the device described in Comparative Example 1;

[0042] Figure 5 This is a schematic diagram of the structure of the device described in Comparative Example 2;

[0043] Figure 6 This is a schematic diagram of the structure of the device described in Comparative Example 3;

[0044] Figure 7 This is a schematic diagram of the structure of the device described in Comparative Example 4.

[0045] Explanation of the reference numerals: 1. base, 2. nozzle, 3. scraper, 4. steel mesh, 5. material storage channel, 6. target material, 7. material storage tube, 8. nozzle air path, 9. steel sheet fixing base, 10. rotating shaft, 11. rotating base, 12. steel sheet supporting part, 13. injection notch, 14. material detection optical fiber, 15. opening filling detection component, 16. screw. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0047] Example

[0048] like Figure 1As shown, the scraper tin spraying device of the present invention comprises a base 1, a rotating mechanism, a nozzle 2, a scraper 3 and a storage tube 7, wherein the rotating mechanism, the nozzle 2, the scraper 3 and the storage tube 7 are all fixed on the base 1. The rotating mechanism is used to drive the steel mesh 4 to rotate, and a circle of storage channels 5 are provided on the steel mesh 4, and the storage channels 5 are used to store the target material 6. The nozzle 2 is used to spray the target material 6, and the scraper 3 is used to scrape the target material 6 into the storage channel 5. The scraper 3 is installed on the base 1 at an angle, and the inclination angle can be adjusted in real time according to factors such as material properties, steel mesh thickness and opening size. In this embodiment, the optimal inclination angle of the scraper 3 is 60°. The storage tube 7 in this embodiment is 30cc and is installed on the base 1 using a Luer connector. The material in the storage tube 7 is solder paste.

[0049] Among them, the nozzle 2 is provided with a nozzle air path 8, the cross section of the nozzle air path 8 is funnel-shaped and runs through the entire nozzle 2, and the penetrating injection air path 8 forms an injection port at the bottom of the nozzle 2, and the diameter of the injection port is larger than the storage channel 5, and the position of the nozzle 2 can be adjusted according to actual conditions; in addition, a steel sheet support portion 12 is also provided below the injection port of the nozzle 2, which is beneficial to strengthen the strength of the steel mesh and also beneficial to support the surroundings when the nozzle is sprayed, thereby improving the service life of the steel sheet, and the steel sheet support portion 12 is provided with an injection notch 13, the upper opening of the injection notch 13 is larger than the storage channel 5, and the lower opening of the injection notch 13 is greater than or equal to the upper opening. When the rotating mechanism drives the steel mesh 4 to rotate until the storage channel 5 storing the target material 6 is aligned with the injection port of the nozzle 2, the nozzle 2 applies pressure through the nozzle air path 8 to spray the target material 6 from the storage channel 5.

[0050] A steel sheet fixing base 9 is also provided below the steel mesh 4 for better fixing the steel mesh 4. The rotating component comprises a rotating shaft 10 and a rotating base 11, and the steel sheet fixing base 9 and the steel mesh 4 are fixed to the rotating base 11 by screws 16. Specifically, the rotating shaft 10 is connected to a motor, and the motor can drive the rotating shaft 10 to drive the rotating base 11 and the steel mesh 4 and the steel sheet fixing base 9 fixed on the rotating base 11 to rotate together.

[0051] A steel sheet support 12 is also provided below the scraper 3 to strengthen the scraping of the target material into the storage channel. The steel sheet fixing base 9 is flush with the steel sheet support 12 provided below the scraper 3 and below the injection port, so that the steel mesh 4 is on the same horizontal plane. Figure 2 As shown, the steel sheet support part 12 is arranged in a fan shape at a corresponding position in the top view, and no steel sheet support part is arranged at the fan-shaped opening below the top view, so that the debugging personnel can check the operating status of the device.

[0052] In addition, the scraper tin spraying device of this embodiment also includes a material detection optical fiber 14 and an opening filling detection component 15, wherein the material detection optical fiber 14 is used to detect the remaining condition of the target material, and the opening filling detection component 15 is used to detect the filling condition of the target material 6 at the material storage channel 5.

[0053] like Figure 3 As shown, the steel mesh 4 in this embodiment is a circular steel sheet, the minimum thickness of the steel mesh 4 is 20 μm, and the material storage channel 5 is arranged at the same distance from the center of the circular steel mesh 4. The working process of the scraper tin spraying device in this embodiment includes:

[0054] (1) Fix the steel mesh 4 with a circle of storage channels 5 on the rotating base 1, and fix the rotating base 11 and the steel mesh 4 on the rotating base with screws 16;

[0055] (2) starting the motor of the rotating mechanism so that the rotating shaft 10 drives the rotating base 11 to rotate together with the steel mesh 4;

[0056] (3) Using the material detection optical fiber 14 to control the material storage pipe 7 to squeeze the target material 6 onto the steel mesh 4;

[0057] (4) During the rotation process, the scraper 3 scrapes the target material 6 into the storage channel 5 of the steel mesh 4;

[0058] (5) After the steel mesh 4 rotates 180°, the material storage channel 5 storing the target material 6 is aligned with the injection port of the nozzle 2; during the rotation, the steel mesh 4 passes through the opening filling detection component 15 to detect whether there is any abnormality in the material filling;

[0059] (6) Start the solenoid valve of nozzle 2, and apply air pressure through nozzle air path 8 to eject the material in storage channel 5;

[0060] Among them, the material detection optical fiber 14 is used to detect the remaining material in the scraper part in real time. If the material is too little, a part of the material in the storage tube 7 will be squeezed onto the steel mesh 4. When it is detected that the accumulated material amount reaches the upper limit, the air pressure is turned off to stop extrusion, thereby realizing automatic feeding.

[0061] The opening filling detection component 15 is used to detect whether the material at the material storage channel 5 is filled. If a filling abnormality is detected, it will not be triggered when it turns to the injection port position of the nozzle 2. If no abnormality is detected, the target material 6 will be injected normally. The opening filling detection component 15 of this embodiment can be a detection sensor or a CCD camera using a visual solution for recognition.

[0062] Comparative Example 1

[0063] See patent CN 118317520 A, which adopts steel mesh tin brushing and specifically discloses a PCB solder paste printer, the structure of which is as follows Figure 4 As shown, it includes a printing component, which includes a sleeve shaft, a side wall array of the sleeve shaft is provided with a feed trough, and an outer array of the sleeve shaft is installed with a scraper, the scraper is located on one side of the feed trough, the inner cavity of the sleeve shaft is provided with a scraper shaft, and the side wall of the scraper shaft is inclined to have a discharge trough, a feed pipe is installed through one side of the scraper shaft, and the feed pipe is connected with the discharge trough. The printing assembly includes a sleeve shaft located on the inner side of the mounting frame, a material discharge trough is provided in an array on the side wall of the sleeve shaft, and a scraper is installed in an array on the outer side of the sleeve shaft, the scraper is located on one side of the material discharge trough, a scraper shaft is provided in the inner cavity of the sleeve shaft, a material discharge trough is provided in an inclined manner on the side wall of the scraper shaft, a feeding pipe is installed through one side of the scraper shaft, the feeding pipe is connected with the material discharge trough, the other end of the feeding pipe passes through the sleeve shaft and extends to the outside of the mounting frame, a fixed partition is sleeved on the other end of the scraper shaft, the fixed partition is fixedly connected to the inner wall of the sleeve shaft, a tooth is arranged in an array on the side of the fixed partition away from the scraper shaft, a servo motor is installed through one side of the sleeve shaft, the servo motor is fixedly connected to the outer side of the mounting frame, and the servo motor is fixedly connected to the outer side of the mounting frame. A rotating gear is fixedly installed at the output end of the motor, and a transmission gear is meshed above the rotating gear. The top of the transmission gear is meshed with the teeth of the side wall of the fixed partition, and the other end of the rotating gear is connected to one end of the scraper shaft. The solder paste is transported through the inner cavity of the scraper shaft and transported to the inner cavity of the sleeve shaft through the discharge trough, and the solder paste is discharged through the discharge trough opened on the side wall of the sleeve shaft. At this time, the servo motor inside the printing component is started, and the servo motor drives the scraper shaft to rotate one circle, so that the solder paste sticking to the inner wall of the sleeve shaft is completely removed. After the scraper shaft rotates one circle, the sleeve shaft rotates one third, and then a set of scrapers is replaced, and finally the solder paste scraping operation is completed by the sliding block.

[0064] The main method of brushing tin on the steel mesh is: making a brushing tin steel mesh according to the entire PCB pad pattern, adding solder paste to the steel mesh, fitting the PCB and the steel mesh, applying the solder paste with a scraper, squeezing the solder paste into the opening of the steel mesh, and finally lifting the steel mesh, and the solder paste remains on the pad.

[0065] At present, steel mesh tinning is mainly used for mass processing of flat PCB substrates, which usually has high requirements for product fit, but is less suitable for products with uneven surfaces and products with small quantities of proofs.

[0066] Comparative Example 2

[0067] See patent CN 220177371 U, which uses a piezoelectric valve to spray tin, and specifically discloses a solder paste piezoelectric injection valve, the structure of which is as follows Figure 5As shown, it includes a valve body, a striker and a nozzle. The striker is assembled in the valve body, and its impact end has an impact plane; the nozzle has an introduction cone surface, and the introduction cone surface is a conical surface; the striker impacts toward the introduction cone surface and impacts with the introduction cone surface; the taper of the introduction cone surface is 90°. The striker has an impact plane that matches the introduction cone surface of the nozzle, so that the surrounding area of ​​the contact between the striker and the nozzle is consistent, the pressure is uniform, and the injection effect is better. In other words, the impact plane of the striker is in seamless contact with the nozzle, so that the pressure of the glue fluid is balanced, the glue spraying effect is improved, and the continuity of the colloid flow is increased.

[0068] The main method of tin spraying of the above-mentioned piezoelectric valve is: the piezoelectric ceramic drives the striker, and the striker hits the nozzle at high speed to knock out the solder paste in the nozzle flow channel to achieve spraying.

[0069] The core problem of piezoelectric valve tin spraying is that the striker and the nozzle head need to have hard contact, and hard contact will cause the solder paste particles at the contact point to be deformed. Therefore, the current piezoelectric valve tin spraying is mostly used for large-size PCB pads, usually with a point diameter of more than 200μm. The smaller the tin spraying size, the more frequent the needle blockage.

[0070] Comparative Example 3

[0071] See patent CN 112390217A, which adopts extrusion type tinning and specifically discloses a device for dispensing micro-volume liquid, the structure of which is as follows Figure 6 As shown, including:

[0072] At least one nozzle for dispensing a viscous liquid through a tip opening of the at least one nozzle; at least one liquid reservoir, the at least one liquid reservoir supplies the viscous liquid to the nozzle; a liquid channel, the liquid channel connecting the liquid reservoir to the nozzle; at least one positive pressure mechanism for providing positive pressure to the liquid reservoir; at least one control unit for controlling the operation of the device for dispensing microvolume liquid; at least one pulse pressure mechanism for providing pulse pressure; an intermediate chamber, the intermediate chamber is introduced along the liquid channel, wherein the intermediate chamber includes: at least one pressure unit, the at least one pressure unit is connected along the liquid channel, wherein the pressure unit allows the positive pressure mechanism and the pulse pressure mechanism to provide pulse pressure to the pressure unit to control the amount of the viscous liquid dispensed from the nozzle; at least one positive pressure directional control valve, the at least one positive pressure directional control valve is connected between the positive pressure mechanism and the liquid reservoir; at least one pulse pressure directional control valve, the at least one pulse pressure directional control valve is connected between the pulse pressure mechanism and the pressure unit.

[0073] The main method of the above-mentioned extrusion tinning is: squeeze the tin storage needle tube and the flow channel through a single or multiple air pressures, and then squeeze out the solder paste through a needle installed on the head of the needle tube.

[0074] Extrusion soldering is a contact soldering process. During the soldering process, the needle will contact the PCB pad, so the motor has to wait for a long time to make contact. Therefore, the soldering efficiency is low, usually below 5Hz per point.

[0075] Comparative Example 4

[0076] See patent CN 220006301 U, which adopts a dipping tinning method and specifically discloses a lamp panel repair device containing a tinning assembly. The tinning assembly includes a tinning needle, a solder paste feeding tray, a flexible wiper and a driving mechanism, and the structure is as follows: Figure 7 shown.

[0077] The solder paste feeding tray is an open tray structure, which is used to hold solder paste for dipping by the soldering needle.

[0078] The soldering needle is also commonly called a soldering head, which is used to pick up solder paste from the solder paste feeding tray and print the picked up solder paste on the pad. The pad can be a pad on the lamp board, or a pad on any circuit board, depending on the specific application scenario of the soldering component. For example, the pad can be a pad on a MiniLED lamp board.

[0079] The flexible wiper is used for inserting the tin-dotting needle to wipe and remove the solder paste attached to the outer wall of the tin-dotting needle. The flexible wiper is made of a flexible material. When the tin-dotting needle is inserted into the flexible wiper and removed from the flexible wiper, the flexible wiper can scrape and clean the solder paste attached to the outer wall of the tin-dotting needle, so that the solder paste can be detached from the outer wall of the tin-dotting needle.

[0080] The main method of the above-mentioned dipping tinning is: dip the solder paste on the tin tray through the tungsten steel needle, and then move it to the soldering pad to stick the solder paste on the needle tip to the soldering pad.

[0081] Dipping tinning is also a contact tinning method. During the tinning process, the needle will contact the PCB pad, and there is also the problem of low tinning efficiency.

[0082] The technical effects and technical problems of the embodiment and comparative examples 1-4 are summarized in Table 1.

[0083] Table 1

[0084] plan Uneven substrate adaptation Usage scenarios Efficiency Needle blocking Solder paste uniformity Example adaptation High and low frequency can be uniform high Won't Good uniformity Comparative Example 1 Not suitable High frequency production high Won't Good uniformity Comparative Example 2 adaptation High frequency production high meeting Average uniformity Comparative Example 3 adaptation Inefficient proofing Low meeting Poor uniformity Comparative Example 4 adaptation Inefficient proofing Low Won't Average uniformity

[0085] In summary, the existing technologies such as steel mesh tin brushing, piezoelectric valve tin spraying, extrusion tin spotting and dipping tin spotting all have certain problems: steel mesh tin brushing requires product bonding and the production of large-format steel mesh, so it is mainly used for large-scale processing of flat PCB substrates, and has poor applicability to products with uneven surfaces and small quantities of proofing products; the core problem of piezoelectric valve tin spraying is that the striker and the nozzle head need to have hard contact, which will deform the solder paste particles at the contact point and easily cause frequent needle blockage; extrusion tin spotting and dipping tin spotting are both contact tin spotting, and both require the needle to contact the PCB pad, so the motor waits for a long time to contact, so the tin spotting efficiency is low, usually below 5Hz for a single point. In addition, due to the uneven solder paste particles, the viscosity of the solder paste fluctuates greatly, and piezoelectric valve tin spraying, extrusion tin spotting, and dipping tin spotting all have the problem of poor spot diameter uniformity.

[0086] The scraper tin spraying device described in the present invention can realize efficient tin brushing for uneven samples, while taking into account the uniformity of tin brushing, and there is no problem of needle clogging; in addition, the device can also realize automatic feeding and automatic detection of material filling status, and is an automated processing equipment with good application prospects in actual industrial manufacturing.

[0087] 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", "axial", "radial", "circumferential" 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 limiting the present invention.

[0088] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0089] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the present invention.

Claims

1. A scraper tin spraying device, characterized in that: include: A base (1), on which a rotating mechanism, a nozzle (2) and a scraper (3) are fixedly provided; A steel mesh (4), wherein a material storage channel (5) is provided on the steel mesh (4), wherein the material storage channel (5) is used to store target materials, and the steel mesh (4) is fixed on a rotating mechanism; A rotating mechanism, the rotating mechanism being used to drive the steel mesh (4) to rotate; A nozzle (2) for spraying a target material (6); The scraper (3) is used to scrape the target material into the material storage channel (5).

2. The scraper tin spraying device according to claim 1, characterized in that: The rotating mechanism drives the steel mesh (4) to rotate until the storage channel (5) storing the target material is aligned with the injection port of the nozzle (2).

3. The scraper tin spraying device according to claim 2, characterized in that: The diameter of the injection port is larger than that of the material storage channel (5).

4. The scraper tin spraying device according to claim 1, characterized in that: The base (1) is also provided with a material storage pipe (7).

5. The scraper tin spraying device according to claim 1, characterized in that: The nozzle (2) is provided with a nozzle gas path (8), the cross section of the nozzle gas path (8) is funnel-shaped, and the nozzle gas path (8) runs through the entire nozzle (2).

6. The scraper tin spraying device according to claim 1, characterized in that: A steel sheet fixing base (9) is also provided below the steel mesh sheet (4); the rotating component comprises a rotating shaft (10) and a rotating base (11); the steel sheet fixing base (9) and the steel mesh sheet (4) are fixed on the rotating base (11).

7. The scraper tin spraying device according to claim 1, characterized in that: The ratio W of the diameter of the material storage channel (5) to the thickness of the steel mesh (4) satisfies: 2 <W≤10。 8. The scraper tin spraying device according to claim 1, characterized in that: The scraper (3) is installed on the base (1) at an angle.

9. The scraper tin spraying device according to claim 1, characterized in that: A steel sheet support portion (12) is provided below the injection port of the nozzle (2), and an injection notch (13) is provided on the steel sheet support portion (12).

10. The scraper tin spraying device according to claim 1, characterized in that: The upper opening of the injection notch (13) is larger than the material storage channel (5), and the lower opening of the injection notch (13) is larger than or equal to the upper opening.

11. The scraper tin spraying device according to claim 1, characterized in that: A steel sheet support portion (12) is provided below the scraper (3).

12. The scraper tin spraying device according to claim 1, characterized in that: The base (1) is also provided with a material detection optical fiber (14) and an opening filling detection component (15); the material detection optical fiber (14) is used to detect the remaining material situation at the scraper (2); and the opening filling detection component (15) is used to detect the material filling situation at the material storage channel (5).

13. A scraper tin spraying method based on the device according to any one of claims 1 to 12, characterized in that: The method includes: Starting the rotating mechanism so that the rotating mechanism drives the steel mesh (4) to rotate together; Adding the target material (6) onto the steel mesh (4); During the rotation process, the scraper (3) scrapes the target material (6) into the storage channel (5) of the steel mesh (4); After the steel mesh (4) rotates, the material storage channel (5) storing the target material (6) is aligned with the injection port of the nozzle (2); The nozzle (2) is started, and air pressure is applied through the nozzle air path (8) to eject the material in the material storage channel (5).

Images