Special device for secondary silvering of NR magnetic core

Abstract

The invention discloses special equipment for secondary silvering of an NR magnetic core. The special equipment comprises a base, and a transfer printing mechanism is arranged on the base; the pad printing mechanism is divided into a primary pad printing mechanism and a secondary pad printing mechanism, and the primary pad printing mechanism and the secondary pad printing mechanism have the same structural assembly; the primary transfer printing mechanism is provided with a feeding groove plate and a discharging groove plate. The secondary transfer printing mechanism is provided with a secondary printing feeding groove plate and a secondary printing discharging groove plate. And the secondary printing feeding groove plate is matched with the discharging groove plate. Primary transfer printing and secondary transfer printing procedures can be realized respectively, and the primary transfer printing procedure and the secondary transfer printing procedure can be combined, so that in a product with a special thick silver layer, slurry subjected to primary transfer printing can be quickly dried after primary transfer printing, and then slurry subjected to secondary transfer printing can be subjected to transfer printing, so that the thickness of the slurry can be controlled to be 6-10 microns; meanwhile, silver paste is not limited any more, copper paste, printing ink and the like can be printed, production can be expanded and used outside the single NR field, and the expanded application performance of equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pad printing equipment, in particular to special equipment for secondary silvering of NR magnetic cores. Background Art

[0002] NR inductors are also called automated shielded inductors because they are made using fully automated machines.

[0003] At present, the pad printers on the market are all used to print silver paste for NR's inductor products. The product range is single, and a single pad printer head prints the product once. The silver layer after pad printing is thin, and the inductor is easy to fall off on the circuit board;

[0004] With the development of science and technology, the requirements for high-frequency currents in automotive products and 5G base stations are getting higher and higher. Some inductors are required to have silver on the core in the early stage, and the silver layer is increased by secondary pad printing to prevent the inductor from falling off when the vibration frequency on the circuit board is high.

[0005] However, the silver layer of the product produced by the pad printer is thin, and after baking, the silver layer will remain black, and the inductor is easy to fall off the circuit board. If the silver layer needs to be thicker based on the current 5G base stations and automotive specifications, the product must be pad printed once, baked, and then pad printed again, which wastes manpower and material resources, and has a single scope of use, and only performs pad printing on one type of product. Summary of the invention

[0006] The purpose of the present invention is to solve the defects in the prior art and to propose a special device for secondary silvering of NR magnetic cores.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A special device for secondary silvering of NR magnetic cores, comprising a base, on which a pad printing mechanism is provided;

[0009] The pad printing mechanism is divided into a primary pad printing mechanism and a secondary pad printing mechanism, and the primary pad printing mechanism and the secondary pad printing mechanism have the same structural components;

[0010] The primary pad printing mechanism and the secondary pad printing mechanism are staggeredly distributed on the base, and the primary pad printing mechanism is located at a loading position of the base for receiving product loading;

[0011] The secondary pad printing mechanism is located at the unloading position of the base, and is used to transport the unloading of the product after the secondary pad printing;

[0012] The primary pad printing mechanism is provided with a loading trough plate and a unloading trough plate;

[0013] The secondary pad printing mechanism is provided with a secondary printing upper material slot plate and a secondary printing lower material slot plate;

[0014] The secondary printing upper trough plate and the lower trough plate cooperate with each other.

[0015] Further, the primary pad printing mechanism and the secondary pad printing mechanism each include a separation jig for separating products from the feed slot plate and the secondary printing feed slot plate;

[0016] A machine head, on which a suction head, a glue head, an oil roller and a scraper are respectively installed, and the suction head and the glue head are located on both sides of the glue head;

[0017] The machine head is also equipped with machine head front and rear motors and machine head lead screw guide rails;

[0018] The suction head, the rubber head, the oil roller and the scraper are all driven by the front and rear motors of the machine head to move the machine head lead screw guide rail forward and backward;

[0019] The top of the rubber head is connected to a rubber head up and down motor and a rubber head up and down lead screw guide rail located on the rubber head;

[0020] The top of the suction head is connected to a suction head upper and lower cylinder located on the machine head, and the suction head upper and lower cylinder is driven by the suction head to move up and down;

[0021] The top end of the scraper is connected to the scraper upper and lower cylinders located on the machine head.

[0022] Furthermore, an oil pan matched with the machine head is provided below the scraper, the oil pan is used to place pad printing slurry, and a steel plate is provided inside the oil pan;

[0023] A transverse moving fixture matched with the machine head is arranged below the suction head, and the transverse moving fixture absorbs the product by vacuum;

[0024] A docking jig matched with the machine head is arranged below the rubber head, and the docking jig is used to position the product and then transport it to the transverse moving jig.

[0025] Furthermore, the bottoms of the unloading trough plate and the secondary printing unloading trough plate are both provided with heating sheets for heating and drying the slurry;

[0026] A flat vibration structure is provided below the material discharge trough plate and the secondary printing material discharge trough plate.

[0027] Furthermore, a water cooling plate is provided at the bottom end of the secondary printing upper trough plate, and the water cooling plate is attached to the bottom wall of the secondary printing upper trough plate, and the secondary printing upper trough plate and the lower trough plate are butt-jointed for heat conduction.

[0028] Furthermore, a water cooler is provided at the bottom of the oil pan for keeping the liquid in the oil pan at a low temperature.

[0029] Furthermore, the docking jig is provided with an ejector pin, and the bottom end of the docking jig is provided with an ejector cylinder that cooperates with the ejector pin; a positioning fork is provided on the side of the transverse jig away from the docking jig, and the bottom end of the positioning fork is provided with a positioning cylinder that cooperates with it.

[0030] Furthermore, the docking jig is located on one side of the transverse moving jig, and a transverse moving seat matching with the transverse moving jig is provided at the bottom end of the transverse moving jig;

[0031] A transverse moving screw guide rail and a transverse moving motor are arranged at the bottom of the transverse moving fixture.

[0032] A push-out cylinder is provided on one side of the transverse moving fixture, and a push-out plate is provided on the push-out cylinder.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] It can realize the primary pad printing and secondary pad printing processes respectively, and can combine the primary pad printing and secondary pad printing processes. In the product with a special thick silver layer, the slurry of the first pad printing can be quickly dried after the first pad printing, and then the slurry of the second pad printing can be applied to control the slurry thickness to reach 6-10μm. At the same time, it is no longer limited to silver paste, and copper paste, ink, etc. can also be printed, so that the production can be expanded beyond the field of single NR, increasing the extended applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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.

[0036] Figure 1 This is a schematic diagram of the overall structure of the special equipment for secondary silvering of NR magnetic cores proposed by the present invention;

[0037] Figure 2 This is one of the expanded schematic diagrams of the pad printing mechanism of the special equipment for secondary silvering of NR magnetic cores proposed by the present invention;

[0038] Figure 3 This is the second expanded schematic diagram of the pad printing mechanism of the special equipment for secondary silvering of NR magnetic cores proposed by the present invention;

[0039] Figure 4 It is a schematic diagram of the connection between the feed chute plate and the secondary printing feed chute plate in an embodiment of the present invention;

[0040] Figure 5 It is a schematic diagram of the expansion of the transverse screw guide rail in an embodiment of the present invention.

[0041] In the figure: 1. base; 2. primary printing mechanism; 3. secondary printing mechanism; 4. loading slot plate; 5. unloading slot plate; 6. unloading slot plate for secondary printing; 7. loading slot plate for secondary printing; 8. separation jig; 9. suction head; 10. rubber head; 11. scraper; 12. oil roller; 13. front and rear motors of machine head; 14. screw guide rails of machine head; 15. upper and lower motors of rubber head; 16. upper and lower screw guide rails of rubber head; 17 , suction head upper and lower cylinder; 18, scraper upper and lower cylinder; 19, oil pan; 20, steel plate; 21, transverse movement fixture; 22, docking fixture; 23, heating plate; 24, flat vibration structure; 25, water cooling plate; 26, water cooling; 27, ejector; 28, ejector cylinder; 29, transverse movement seat; 30, positioning fork; 31, positioning cylinder; 32, transverse movement screw guide rail; 33, ejection cylinder; 34, ejection plate. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0043] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] Reference Figure 1-5 , NR core secondary silvering special equipment, including a base 1, the base 1 is provided with a pad printing mechanism;

[0045] The pad printing mechanism is divided into a primary pad printing mechanism 2 and a secondary pad printing mechanism 3, and the primary pad printing mechanism 2 and the secondary pad printing mechanism 3 have the same structural components;

[0046] The primary pad printing mechanism 2 and the secondary pad printing mechanism 3 are staggeredly distributed on the base 1, and the primary pad printing mechanism 2 is located at the loading position of the base 1 for receiving product loading;

[0047] The secondary pad printing mechanism 3 is located at the unloading position of the base 1 and is used to transport the unloading product after the secondary pad printing;

[0048] The primary pad printing mechanism 2 is provided with an upper material trough plate 4 and a lower material trough plate 5;

[0049] The secondary printing mechanism 3 is provided with a secondary printing upper slot plate 7 and a secondary printing lower slot plate 6;

[0050] The secondary printing upper trough plate 7 and the lower trough plate 5 cooperate to convey the unloaded product of the primary pad printing mechanism 2 to the secondary pad printing mechanism 3, wherein the primary pad printing mechanism 2 conveys the product after the slurry is dried to the secondary pad printing mechanism 3 to control the thickness of the slurry layer.

[0051] Reference Figure 1-5 In a specific embodiment of the present application, the primary pad printing mechanism 2 and the secondary pad printing mechanism 3 both include a separation jig 8 for separating products from the feed slot plate 4 and the secondary printing feed slot plate 7;

[0052] The feed trough plate 4 and the secondary printing feed trough plate 7 convey the products forward to the separation jig 8. The separation jig 8 only separates one row of products. When the feed trough plate 4 and the secondary printing feed trough plate 7 have finished arranging the products, the separation jig 8 sucks the products and extends the cylinder to separate the products from the feed trough plate 4, in order to avoid the suction head 9 from failing to suck up due to the squeezing of the subsequent products.

[0053] A machine head, on which a suction head 9, a glue head 10, an oil roller 12 and a scraper 11 are respectively installed, and the suction head 9 and the glue head 10 are located on both sides of the glue head 10;

[0054] The machine head is also equipped with a machine head front and rear motor 13 and a machine head lead screw guide rail 14;

[0055] The suction head 9, the rubber head 10, the oil roller 12 and the scraper 11 are all driven by the front and rear motors 13 of the machine head to move the machine head screw guide rail 14 forward and backward, and the suction head upper and lower cylinders 17 are driven by the suction head 9 to move up and down;

[0056] The top end of the rubber head 10 is connected to a rubber head up and down motor 15 and a rubber head up and down screw guide rail 16 located on the rubber head 10;

[0057] The top end of the suction head 9 is connected to a suction head upper and lower cylinder 17 located on the machine head;

[0058] The top end of the scraper 11 is connected to a scraper upper and lower cylinder 18 located on the machine head.

[0059] An oil pan 19 matching the machine head is provided below the scraper 11. The oil pan 19 is used to place pad printing slurry. A steel plate 20 is provided inside the oil pan 19.

[0060] A transverse moving fixture 21 cooperating with the machine head is arranged below the suction head 9, and the transverse moving fixture 21 absorbs the product by vacuum;

[0061] A docking jig 22 matched with the machine head is arranged below the rubber head 10 , and the docking jig 22 is used to position the product and then transport it to the transverse jig 21 .

[0062] When the front and rear motors 13 of the machine head move forward and the suction head 9 is aligned with the top of the separation jig 8, the upper and lower cylinders 17 of the suction head extend to place the suction head 9 on the product of the separation jig 8, the vacuum is turned on, the suction head 9 sucks the product, the upper and lower cylinders of the suction head 9 retract, the front and rear motors 13 of the machine head move backward, the suction head 9 moves to the top of the docking jig 22, the upper and lower cylinders 17 of the suction head extend to place the product on the docking jig 22.

[0063] Reference Figure 1-5 In a specific embodiment of the present application, a push pin 27 is provided on the docking jig 22, and a push pin cylinder 28 cooperating with the push pin 27 is provided at the bottom end of the docking jig 22;

[0064] The docking fixture 22 is located on one side of the transverse moving fixture 21, and a transverse moving seat 29 matching with the transverse moving fixture 21 is provided at the bottom end of the transverse moving fixture 21;

[0065] A positioning fork 30 is provided on the side of the transverse moving jig 21 away from the docking jig 22, and a positioning cylinder 31 matched therewith is provided at the bottom end of the positioning fork 30;

[0066] A transverse screw guide rail 32 and a transverse motor are provided at the bottom of the transverse moving fixture 21 .

[0067] A push-out cylinder 33 is provided on one side of the transverse moving fixture 21 , and a push-out plate 34 is provided on the push-out cylinder 33 .

[0068] After the product is placed, the positioning cylinder 31 drives the positioning fork 30 to extend and dock with the docking fixture 22. The ejector cylinder 28 drives the ejector 27 to push the product on the docking fixture 22 to the positioning fork 30 for precise positioning. At this time, the product is on the transverse moving fixture 21, and the transverse moving seat 29 is vacuum opened, and the product is sucked and stabilized on the transverse moving fixture 21 through the transverse moving fixture 21.

[0069] In a specific embodiment of the present application, the bottom of the feed trough plate 5 and the secondary printing feed trough plate 6 are both provided with a heating sheet 23 for heating and drying the slurry;

[0070] A flat vibration structure 24 for assisting transportation is provided below the material discharge trough plate 5 and the secondary printing material discharge trough plate 6 .

[0071] The bottom end of the secondary printing trough plate 7 is provided with a water cooling plate 25 for cooling. The water cooling plate 25 is attached to the bottom wall of the secondary printing trough plate 7. The secondary printing trough plate 7 and the lower trough plate 5 are connected for heat conduction. It is not difficult to see from the above design that after silver is pasted once, the silver paste printed for the first time is dried by the heating function of the lower trough plate. In order to prevent the product from being overheated, the water cooling plate 25 on the secondary printing trough plate 7 can cool down the heated product without affecting the second pad printing. If there is no water cooling function, the product will generate high temperature during the first heating, which will affect the quality of the silver paste printed for the second time and easily damage the rubber head.

[0072] The bottom of the oil pan 19 is provided with a water cooler 26 for keeping the liquid in the oil pan 19 at a low temperature. The water cooler 26 uses a compressor for water cooling and water circulation. The slurry placed in the oil pan 19 includes but is not limited to silver paste, ink, copper paste or any other compatible material. The oil pan 19 keeps the liquid in the oil pan 19 at a low temperature. It is not difficult to see from the above design that the low temperature is maintained by arranging a water cooling function on the oil pan. When the second pad printing is completed, it enters the second material unloading and baking, so that the pad printed product comes out.

[0073] Reference Figure 1-5 From the above design, it can be seen that: after the product has the above action and is adsorbed on the transverse moving fixture 21:

[0074] The machine head drives the rubber head 10 printed with silver paste in advance to move to the top of the product in the positioning fork 30. The rubber head 10 is driven by the rubber head up and down motor 15 to move the rubber head 10 down with the rubber head up and down screw guide rail 16 to print the product. At the same time, the scraper up and down cylinders 18 extend to allow the scraper 11 to scrape the steel plate 20. After printing the product, the rubber head 10 retreats, the scraper 11 scrapes the steel plate 20 clean, and the rubber head 10 continues to print the silver paste.

[0075] After the product is printed, the transverse motor drives the transverse screw guide rail 32 to move the transverse fixture 21 to the unloading position. After reaching the unloading position, the cylinder 33 is pushed to push the product on the transverse fixture 21 onto the unloading trough plate 5. There is a heating plate 23 at the bottom of the unloading trough plate 5 for heating. The product is dried on the unloading trough plate 5 to dry the silver paste. There is also a flat vibration structure 24 under the unloading trough plate 5 to transport the product.

[0076] After the product comes out of the unloading trough plate 5, it is docked to the secondary printing trough plate 7. There is a water cooling plate 25 under the secondary printing trough plate for cooling. Since the product itself carries heat after being heated when it comes out of the unloading trough plate 5, and the unloading trough plate 5 and the secondary printing trough plate 7 are connected to each other for heat conduction, it can avoid the problem that when the product is at high temperature, the effect of the secondary pad printing will be poor or the rubber head 10 will be damaged to a certain extent.

[0077] Then, the secondary printing process begins. The principle of the secondary printing process is the same as above. After the secondary pad printing, the material is unloaded from the secondary unloading trough plate 5, and the pad-printed product is received by the receiving tray. After one plate is arranged, it is taken away and the process is completed.

[0078] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A special device for secondary silvering of NR magnetic cores, comprising a base (1), on which a pad printing mechanism is provided, characterized in that: The pad printing mechanism is divided into a primary pad printing mechanism (2) and a secondary pad printing mechanism (3), and the primary pad printing mechanism (2) and the secondary pad printing mechanism (3) have the same structural components; The primary pad printing mechanism (2) and the secondary pad printing mechanism (3) are staggeredly distributed on the base (1); the primary pad printing mechanism (2) is located at a loading position of the base (1) and is used to receive product loading; The secondary pad printing mechanism (3) is located at the unloading position of the base (1) and is used for conveying the unloading of the product after the secondary pad printing; The primary pad printing mechanism (2) is provided with an upper material trough plate (4) and a lower material trough plate (5); The secondary printing mechanism (3) is provided with a secondary printing upper material slot plate (7) and a secondary printing lower material slot plate (6); The secondary printing upper trough plate (7) and the lower trough plate (5) cooperate with each other.

2. The NR core secondary silvering special equipment according to claim 1 is characterized in that: The primary pad printing mechanism (2) and the secondary pad printing mechanism (3) both comprise a separation jig (8) for separating products from the loading trough plate (4) and the secondary printing loading trough plate (7); A machine head, on which a suction head (9), a glue head (10), an oil roller (12) and a scraper (11) are respectively installed, and the suction head (9) and the glue head (10) are located on both sides of the glue head (10); The machine head is also equipped with a machine head front and rear motor (13) and a machine head lead screw guide rail (14); The suction head (9), the glue head (10), the oil roller (12) and the scraper (11) are all driven by the machine head front and rear motors (13) to move forward and backward on the machine head lead screw guide rail (14); The top end of the rubber head (10) is connected to a rubber head up and down motor (15) and a rubber head up and down screw guide rail (16) located on the rubber head (10); The top end of the suction head (9) is connected to a suction head upper and lower cylinder (17) located on the machine head, and the suction head upper and lower cylinder (17) is driven by the suction head (9) to move up and down; The top end of the scraper (11) is connected to scraper upper and lower cylinders (18) located on the machine head.

3. The NR core secondary silvering special equipment according to claim 2 is characterized in that: An oil pan (19) matched with the machine head is arranged below the scraper (11), the oil pan (19) is used to place pad printing slurry, and a steel plate (20) is arranged inside the oil pan (19); A transverse moving fixture (21) matched with the machine head is arranged below the suction head (9), and the transverse moving fixture (21) absorbs the product through vacuum; A docking jig (22) matched with the machine head is arranged below the rubber head (10), and the docking jig (22) is used to position the product and then transport it to the transverse jig (21).

4. The NR core secondary silvering special equipment according to claim 3 is characterized in that: The bottoms of the feed trough plate (5) and the secondary printing feed trough plate (6) are both provided with heating sheets (23) for heating and drying the slurry; A flat vibration structure (24) is provided below the material discharge trough plate (5) and the secondary printing material discharge trough plate (6).

5. The NR core secondary silvering special equipment according to claim 3 is characterized in that: A water cooling plate (25) is provided at the bottom end of the secondary printing upper trough plate (7), and the water cooling plate (25) is attached to the bottom wall of the secondary printing upper trough plate (7). The secondary printing upper trough plate (7) and the lower trough plate (5) are butt-jointed for heat conduction.

6. The NR core secondary silvering special equipment according to claim 3, characterized in that: The bottom of the oil pan (19) is provided with a water cooler (26) for keeping the liquid in the oil pan (19) at a low temperature.

7. The NR core secondary silvering special equipment according to claim 3 is characterized in that: The docking jig (22) is provided with an ejector pin (27), and the bottom end of the docking jig (22) is provided with an ejector pin cylinder (28) that cooperates with the ejector pin (27); a positioning fork (30) is provided on the side of the transverse jig (21) away from the docking jig (22), and the bottom end of the positioning fork (30) is provided with a positioning cylinder (31) that cooperates with it.

8. The NR core secondary silvering special equipment according to claim 7, characterized in that: The docking jig (22) is located on one side of the transverse moving jig (21), and a transverse moving seat (29) matching with the transverse moving jig (21) is provided at the bottom end of the transverse moving jig (21); A transverse moving screw guide rail (32) and a transverse moving motor are arranged at the bottom of the transverse moving fixture (21); A push-out cylinder (33) is provided on one side of the transverse moving fixture (21), and a push-out plate (34) is provided on the push-out cylinder (33).

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