CN112420385B - High-voltage-resistance ceramic capacitor chip and production process thereof - Google Patents
High-voltage-resistance ceramic capacitor chip and production process thereof Download PDFInfo
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- CN112420385B CN112420385B CN202011181570.7A CN202011181570A CN112420385B CN 112420385 B CN112420385 B CN 112420385B CN 202011181570 A CN202011181570 A CN 202011181570A CN 112420385 B CN112420385 B CN 112420385B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
- H01G4/1209—Ceramic dielectrics characterised by the ceramic dielectric material
- H01G4/1218—Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates
- H01G4/1227—Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates based on alkaline earth titanates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
Abstract
The invention discloses a high-voltage-resistant ceramic capacitor chip and a production process thereof2Ti9O20、BaTi4O9、BaTi3O7、BaTi5O11And BaTi6O13The auxiliary materials comprise the following raw materials in percentage by mole: 4-5% of Si, 1.5-2.5% of Ca, 2.5-3.5% of As, 2-3% of K, 6-7% of Mo, 4-5.5% of In and 0.5-2% of I; the high-voltage-resistant ceramic capacitor chip prepared from the raw materials can normally work at high temperature and high pressure, and has excellent high-temperature resistance and very high-voltage resistance.
Description
Technical Field
The invention relates to the technical field of ceramic capacitors, in particular to a high-voltage-resistance ceramic capacitor chip and a production process thereof.
Background
Ceramic capacitors are an important class of chip components, and have the advantages of compact structure, small size, high specific volume, low dielectric loss, low price and the like, so that the ceramic capacitors are widely applied to electronic products such as automobiles, computers, mobile phones, scanners, digital cameras and the like, and are also increasingly widely applied to military electronic equipment such as aerospace, weapons, ships, military communication and the like. The ceramic capacitor is especially suitable for chip surface assembly, can greatly improve the circuit assembly density and reduce the volume of the whole machine, and the outstanding characteristic makes the ceramic capacitor become the chip electronic component which is developed fastest and has the largest use amount in the world.
In recent years, with the popularization and wide application of electronic information equipment in various industries, especially in some special fields and extreme environments, higher requirements are put forward on ceramic capacitors. The traditional ceramic capacitor mainly takes a circular sheet shape, and the structure has the advantages of simple forming, mature process, simple and convenient operation, and is convenient for batch and large-scale production; however, for high voltage ceramic capacitors, the main consideration is that the dielectric strength and the nominal capacitor are as high as possible; the two are just contradictory, and under the same conditions: the thinner the dielectric, the greater the capacitance and the lower the compressive strength, and vice versa. The traditional disc type ceramic capacitor has a relatively large volume, and is not beneficial to the assembly of power devices; in addition, when the ceramic capacitor is molded, burrs or cracks are likely to occur. When the subsequent insulation coating is performed, the difference in insulation thickness of the ceramic capacitor is large due to the presence of burrs or cracks under the same coating, and the dielectric strength of the ceramic capacitor is also reduced.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a high-voltage-resistant ceramic capacitor chip and a production process thereof: using Ba2Ti9O20As the main material, Ba2Ti9O20Has high dielectric constant, low dielectric loss and small temperature coefficient of resonance frequency, so that Ba is adopted2Ti9O20The ceramic capacitor chip with high voltage resistance, which is made of the main material, can normally work at high temperature and high pressure, has excellent high-temperature resistance and high-pressure resistance, has high mechanical strength, can normally work at high temperature and high pressure, and has excellent high-temperature resistance and high-pressure resistance and high mechanical strength.
Placing the blank A on a lower pressure plate of a deburring device, regulating and controlling downward contraction of a hydraulic cylinder through a PLC (programmable logic controller), driving a movable transverse table to move downwards, driving a first fixing plate and an upper pressure plate to move downwards together through the movable transverse table, and positioning the movable transverse table in a matched manner through a positioning guide pillar and a positioning guide sleeve; through the cooperation location of location guide pillar and location guide pin bushing for go up the pressure disk and press down the pressure disk position more stable accurate, simultaneously through setting up four pressure sensor in last pressure disk bottom, the pressure disk compresses tightly blank A's the signal that compresses tightly on the monitoring that can be better, and the in time adjustment of being convenient for avoids the extrusion disequilibrium.
The third motor is started to drive the screw rod to rotate, the screw rod drives the moving mechanism to move transversely, the moving mechanism drives the moving plate and the connecting rod to move transversely through the tooth grooves in the guide block, the connecting rod drives the first cutting knife and the second cutting knife to move transversely to adjust the positions, and then the micro air cylinder is started to adjust the position of the first cutting knife; after the position adjustment of the first cutting knife and the second cutting knife is finished, synchronously starting the first motor and the second motor, enabling the rotation directions and the rotation speeds of the first motor and the second motor to be the same, driving the upper pressing disc and the lower pressing disc to rotate together, carrying out deburring treatment on the top side edge and the bottom side edge of the blank A, and chamfering; the third motor is arranged to drive the screw rod to rotate, so that the moving mechanism can move, and can drive the first cutting knife and the second cutting knife to transversely adjust the positions, and meanwhile, the micro air cylinder can adjust the distance between the first cutting knife and the second cutting knife, so that the whole cutting mechanism can flexibly adjust the positions of the first cutting knife and the second cutting knife, and burrs of blanks A with different diameters and thicknesses can be removed and chamfered; the whole device has functional diversity, and the working efficiency is improved; the whole deburring device is simple in structure, convenient to install and detach and convenient to use.
The purpose of the invention can be realized by the following technical scheme:
the high-voltage-resistance ceramic capacitor chip comprises a ceramic body and positive and negative electrodes arranged on two sides of the ceramic body, wherein the ceramic body comprises main materials and auxiliary materials, and the main materials comprise Ba2Ti9O20、BaTi4O9、BaTi3O7、BaTi5O11And BaTi6O13The auxiliary materials comprise the following raw materials in percentage by mole: 4-5% of Si, 1.5-2.5% of Ca1, 5-3.5% of As, 2-3% of K, 6-7% of Mo, 4-5.5% of In, 0.5-2% of I, and the following stable phases In mol percent: ba6Ti17O409-14％、Ba4Ti13O3020-24％、TiO215-18%, the restIs metastable phase BaTi2O5；
The production process of the high-voltage-resistant ceramic capacitor chip comprises the following steps:
s1: taking the raw materials according to the formula proportion, mixing the raw materials uniformly, and putting the uniformly mixed raw materials into a burning furnace for burning and melting;
s2: putting the raw materials after being sintered into a clean mould for solidification and forming to obtain a blank A;
s3: placing a blank A on a lower pressure plate of a deburring device, regulating and controlling the contraction of a hydraulic cylinder through a PLC (programmable logic controller), driving a movable transverse table to move downwards, driving a first fixing plate and an upper pressure plate to move downwards through the movable transverse table, matching and positioning through a positioning guide pillar and a positioning guide sleeve, transmitting a pressing signal to the PLC through a pressure sensor when the upper pressure plate is in pressing contact with the top surface of the blank A, controlling the hydraulic cylinder to stop contracting through the PLC, starting a third motor and a micro-cylinder to adjust the positions of a first cutting knife and a second cutting knife, synchronously starting the first motor and the second motor after the adjustment is finished, enabling the first motor and the second motor to rotate at the same direction and rotation speed, driving the upper pressure plate and the lower pressure plate to rotate together, carrying out deburring treatment on the top side edge and the bottom side edge of the blank A, and chamfering to obtain a blank B;
s4: carrying out surface rough grinding treatment on the blank B, and carrying out fine grinding treatment after the blank B reaches the specified thickness and flatness to obtain a blank C;
s5: placing the blank C in a replacement solution for sodium-potassium ion replacement treatment, then airing, and then performing glazing treatment on the surface or the outer circle of the blank C to obtain a blank D;
s6: and placing the blank D in baking equipment for primary baking treatment, coating positive and negative electrodes on two sides of the ceramic body after baking is finished, and placing the blank D in the baking equipment for secondary baking treatment to obtain the high-voltage-resistance ceramic capacitor chip.
As a further scheme of the invention: the deburring device in the step S3 comprises a processing table, a hydraulic cylinder, a movable transverse table, an upper pressure plate mechanism, a lower pressure plate mechanism, a cutting mechanism and a PLC controller, wherein two first mounting bosses are arranged at the top of the processing table and are symmetrically distributed about the longitudinal center line of the processing table, the hydraulic cylinder is fixedly mounted at the top of each first mounting boss, two second mounting bosses are arranged at the bottom of the movable transverse table and are symmetrically distributed about the longitudinal center line of the movable transverse table, the movable transverse table is mounted at the tops of the two hydraulic cylinders through the two second mounting bosses, a first fixing plate is fixedly connected in the middle of the bottom of the movable transverse table, positioning guide posts are mounted at four corners at the bottom of the first fixing plate, the upper pressure plate mechanism is mounted in the middle of the top of the movable transverse table, and the lower pressure plate mechanism is mounted in the middle of the top of the processing table, one side of the top of the processing table is provided with a cutting mechanism, and one end of the front side of the processing table is provided with a PLC (programmable logic controller).
As a further scheme of the invention: go up pressure disk mechanism and include first mounting box, first motor, first bearing, go up pressure disk, pressure sensor, first mounting box fixed mounting is in the middle of removing the horizontal stage top, remove and seted up first mounting hole in the middle of the horizontal stage top, install first bearing in the first mounting hole, the inside fixed mounting of first mounting box has first motor, the output shaft of first motor passes first bearing and runs through first fixed plate and is connected with the pressure disk, the output shaft of first motor rotates and installs in first bearing, it is provided with four pressure sensor, four to go up the pressure disk bottom angular distribution such as pressure sensor is in last pressure disk bottom edge.
As a further scheme of the invention: the lower pressing plate mechanism comprises a second fixing plate, a positioning guide sleeve, a lower pressing plate, a rotating boss and a second motor, a first mounting groove is formed in the middle of the top of the machining table, the second motor is fixedly mounted in the first mounting groove, the output shaft of the second motor is connected with the lower pressing plate, the rotating boss is arranged in the middle of the bottom of the lower pressing plate, the lower pressing plate is rotatably mounted on the second fixing plate through the rotating boss, the second fixing plate is fixedly mounted in the middle of the top of the machining table, the positioning guide sleeve is arranged at each of four corners of the top of the second fixing plate, and the positions of the positioning guide sleeves correspond to the positions of the positioning guide pillars one to one.
As a further scheme of the invention: the cutting mechanism comprises an air cylinder, a third motor, a second mounting box, a third mounting box, a second bearing, a lead screw, a support rod, a moving mechanism, a moving plate, a connecting rod, a micro air cylinder, a first cutting knife, a second cutting knife, a mounting block and a fixing pin, the air cylinder is fixedly mounted at the top of the processing table, a piston rod of the air cylinder is connected with the second mounting box, the third motor is mounted inside the second mounting box, one side of the second mounting box is connected with the third mounting box, an output shaft of the third motor penetrates through the second mounting box and the third mounting box to be connected with the lead screw, one end of the lead screw is rotatably mounted in the second bearing, the other end of the lead screw is rotatably mounted on the side wall of the third mounting box far away from one side of the second mounting box, the second bearing is fixedly mounted in the middle of the side wall of the third mounting box near one side of the second mounting box, and the lead screw is positioned inside the third mounting box, the utility model discloses a lead screw, including third mounting box, lead screw, movable mechanism, fixed pin, connecting rod, piston rod, connecting rod, first cutting sword position is corresponding with second cutting sword position, and the movable plate is connected with the movable plate, the afterbody of movable plate passes through the one end of fixed pin fixed connection at the connecting rod, the connecting rod other end passes the installation piece and extends to the third mounting box outside, installation piece fixed mounting is on the third mounting box, upper end movable plate one side fixed mounting is kept away from to the connecting rod has miniature cylinder, miniature cylinder's piston rod runs through the connecting rod and is connected with first cutting sword, and the lower extreme movable plate one side fixed mounting is kept away from to the connecting rod has the second cutting sword, first cutting sword position is corresponding with second cutting sword position.
As a further scheme of the invention: the moving mechanism comprises a connecting block, two guide blocks and tooth grooves, the connecting block is sleeved on the screw rod, the guide blocks are arranged on two sides of the connecting block and are sleeved on the supporting rod, the tooth grooves are formed in the outer sides of the guide blocks, moving teeth are arranged at the head of the moving plate, and the moving plate is connected in the tooth grooves of the guide blocks through the moving teeth in a meshed mode.
As a further scheme of the invention: the use method of the deburring device comprises the following steps:
step one, a blank A is placed on a lower pressure plate of a deburring device, a hydraulic cylinder is regulated and controlled to shrink downwards through a PLC (programmable logic controller), a movable transverse table is driven to move downwards, the movable transverse table drives a first fixing plate and an upper pressure plate to move downwards together, the first fixing plate and the upper pressure plate are positioned in a matched mode through a positioning guide pillar and a positioning guide sleeve, when the upper pressure plate is in pressing contact with the top surface of the blank A, a pressing signal is transmitted to the PLC through a pressure sensor, and the PLC controls the hydraulic cylinder to stop shrinking;
secondly, a third motor is started to drive a screw rod to rotate, the screw rod drives a moving mechanism to move transversely, the moving mechanism drives a moving plate and a connecting rod to move transversely through a tooth groove in a guide block, the connecting rod drives a first cutting knife and a second cutting knife to move transversely to adjust the positions, and then a micro air cylinder is started to adjust the position of the first cutting knife;
and step three, after the position adjustment of the first cutting knife and the second cutting knife is finished, synchronously starting the first motor and the second motor, enabling the rotation direction and the rotation speed of the first motor and the second motor to be the same, driving the upper pressing disc and the lower pressing disc to rotate together, carrying out deburring treatment on the top side edge and the bottom side edge of the blank A, and chamfering.
As a further scheme of the invention: a production process of a high-voltage-resistant ceramic capacitor chip comprises the following steps:
SS 1: taking the raw materials according to the formula proportion, mixing the raw materials uniformly, and putting the uniformly mixed raw materials into a burning furnace for burning and melting;
SS 2: putting the raw materials after being sintered into a clean mould for solidification and forming to obtain a blank A;
SS 3: placing a blank A on a lower pressure plate of a deburring device, regulating and controlling the contraction of a hydraulic cylinder through a PLC (programmable logic controller), driving a movable transverse table to move downwards, driving a first fixing plate and an upper pressure plate to move downwards through the movable transverse table, matching and positioning through a positioning guide pillar and a positioning guide sleeve, transmitting a pressing signal to the PLC through a pressure sensor when the upper pressure plate is in pressing contact with the top surface of the blank A, controlling the hydraulic cylinder to stop contracting through the PLC, starting a third motor and a micro-cylinder to adjust the positions of a first cutting knife and a second cutting knife, synchronously starting the first motor and the second motor after the adjustment is finished, enabling the first motor and the second motor to rotate at the same direction and rotation speed, driving the upper pressure plate and the lower pressure plate to rotate together, carrying out deburring treatment on the top side edge and the bottom side edge of the blank A, and chamfering to obtain a blank B;
SS 4: carrying out surface rough grinding treatment on the blank B, and carrying out fine grinding treatment after the blank B reaches the specified thickness and flatness to obtain a blank C;
SS 5: placing the blank C in a replacement solution for sodium-potassium ion replacement treatment, then airing, and then performing glazing treatment on the surface or the outer circle of the blank C to obtain a blank D;
SS 6: and placing the blank D in baking equipment for primary baking treatment, coating positive and negative electrodes on two sides of the ceramic body after baking is finished, and placing the blank D in the baking equipment for secondary baking treatment to obtain the high-voltage-resistance ceramic capacitor chip.
The invention has the beneficial effects that:
1. the high-voltage-resistance ceramic capacitor chip adopts Ba2Ti9O20As the main material, Ba2Ti9O20Has high dielectric constant, low dielectric loss and small temperature coefficient of resonance frequency, so that Ba is adopted2Ti9O20The ceramic capacitor chip with high voltage resistance, which is made of the main material, can normally work at high temperature and high pressure, has excellent high-temperature resistance and high-voltage resistance, and has high mechanical strength.
2. Placing the blank A on a lower pressure plate of a deburring device, regulating and controlling downward contraction of a hydraulic cylinder through a PLC (programmable logic controller), driving a movable transverse table to move downwards, driving a first fixing plate and an upper pressure plate to move downwards together through the movable transverse table, and positioning the movable transverse table in a matched manner through a positioning guide pillar and a positioning guide sleeve; through the cooperation location of location guide pillar and location guide pin bushing for go up the pressure disk and press down the pressure disk position more stable accurate, simultaneously through setting up four pressure sensor in last pressure disk bottom, the pressure disk compresses tightly blank A's the signal that compresses tightly on the monitoring that can be better, and the in time adjustment of being convenient for avoids the extrusion disequilibrium.
3. The third motor is started to drive the screw rod to rotate, the screw rod drives the moving mechanism to move transversely, the moving mechanism drives the moving plate and the connecting rod to move transversely through the tooth grooves in the guide block, the connecting rod drives the first cutting knife and the second cutting knife to move transversely to adjust the positions, and then the micro air cylinder is started to adjust the position of the first cutting knife; after the position adjustment of the first cutting knife and the second cutting knife is finished, synchronously starting the first motor and the second motor, enabling the rotation directions and the rotation speeds of the first motor and the second motor to be the same, driving the upper pressing disc and the lower pressing disc to rotate together, carrying out deburring treatment on the top side edge and the bottom side edge of the blank A, and chamfering; the third motor is arranged to drive the screw rod to rotate, so that the moving mechanism can move, and can drive the first cutting knife and the second cutting knife to transversely adjust the positions, and meanwhile, the micro air cylinder can adjust the distance between the first cutting knife and the second cutting knife, so that the whole cutting mechanism can flexibly adjust the positions of the first cutting knife and the second cutting knife, and burrs of blanks A with different diameters and thicknesses can be removed and chamfered; the whole device has functional diversity and improves the working efficiency.
4. The whole deburring device is simple in structure, convenient to install and detach and convenient to use.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the deburring device of the present invention;
FIG. 2 is a schematic view of a connecting structure of an upper platen and a first fixing plate of the deburring device of the present invention;
FIG. 3 is a schematic view of a connecting structure of a lower platen and a second fixing plate of the deburring device of the present invention;
FIG. 4 is a schematic cross-sectional view of a pressing plate mechanism of the deburring device of the present invention;
FIG. 5 is a schematic view of the overall structure of the cutting mechanism of the deburring device of the present invention;
fig. 6 is a schematic view of the overall structure of the moving mechanism of the deburring device of the present invention.
In the figure: 1. a processing table; 2. a hydraulic cylinder; 3. moving the traverse table; 4. an upper platen mechanism; 5. a pressing disc mechanism; 6. a cutting mechanism; 11. a PLC controller; 12. a first mounting boss; 31. a second mounting boss; 32. a first fixing plate; 33. positioning the guide post; 41. a first mounting box; 42. a first motor; 43. a first bearing; 44. an upper platen; 45. a pressure sensor; 51. a second fixing plate; 52. positioning the guide sleeve; 53. a lower platen; 531. rotating the boss; 54. a second motor; 61. a cylinder; 62. a third motor; 63. a second mounting box; 64. a third mounting box; 65. a second bearing; 66. a screw rod; 67. a support bar; 68. a moving mechanism; 681. connecting blocks; 682. a guide block; 683. a tooth socket; 69. moving the plate; 691. moving the teeth; 70. a connecting rod; 71. a micro cylinder; 72. a first cutting blade; 73. a second cutting blade; 74. mounting blocks; 75. and fixing the pin.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, a high voltage-resistant ceramic capacitor chip includes a ceramic body and positive and negative electrodes disposed at two sides of the ceramic body, wherein the ceramic body includes a main material and an auxiliary material, the main material is Ba2Ti9O20The auxiliary materials comprise the following raw materials in percentage by mole: si 5%, Ca 2.5%, As 3.5%, K3%, Mo 7%, In 5.5%, I2%, and a stable phase In the following mole percentages: ba6Ti17O4014％、Ba4Ti13O3024％、TiO218 percent of metastable phase BaTi2O5；
The production process of the high-voltage-resistant ceramic capacitor chip comprises the following steps:
s1: taking the raw materials according to the formula proportion, mixing the raw materials uniformly, and putting the uniformly mixed raw materials into a burning furnace for burning and melting;
s2: putting the raw materials after being sintered into a clean mould for solidification and forming to obtain a blank A;
s3: placing a blank A on a lower pressing plate 53 of a deburring device, regulating and controlling the contraction of a hydraulic cylinder 2 through a PLC (programmable logic controller) 11 to drive a movable transverse table 3 to move downwards, driving a first fixing plate 32 and an upper pressing plate 44 to move downwards through the movable transverse table 3, matching and positioning through a positioning guide post 33 and a positioning guide sleeve 52, when the upper pressing plate 44 is in pressing contact with the top surface of the blank A, transmitting a pressing signal to the PLC 11 through a pressure sensor 45, controlling the hydraulic cylinder 2 to stop contracting through the PLC 11, starting a third motor 62 and a micro cylinder 71 to adjust the positions of a first cutting knife 72 and a second cutting knife 73, synchronously starting the first motor 42 and the second motor 54 after the adjustment is finished, enabling the rotation directions and the rotation speeds of the first motor 42 and the second motor 54 to be the same, driving the upper pressing plate 44 and the lower pressing plate 53 to rotate together, deburring and chamfering the top side edge and the bottom side edge of the blank A, obtaining a blank B;
s4: carrying out surface rough grinding treatment on the blank B, and carrying out fine grinding treatment after the blank B reaches the specified thickness and flatness to obtain a blank C;
s5: placing the blank C in a replacement solution for sodium-potassium ion replacement treatment, then airing, and then performing glazing treatment on the surface or the outer circle of the blank C to obtain a blank D;
s6: and placing the blank D in baking equipment for primary baking treatment, coating positive and negative electrodes on two sides of the ceramic body after baking is finished, and placing the blank D in the baking equipment for secondary baking treatment to obtain the high-voltage-resistance ceramic capacitor chip.
The deburring device in the step S3 comprises a processing table 1, a hydraulic cylinder 2, a movable transverse table 3, an upper platen mechanism 4, a lower platen mechanism 5, a cutting mechanism 6 and a PLC (programmable logic controller) 11, wherein the top of the processing table 1 is provided with two first mounting bosses 12, the two first mounting bosses 12 are symmetrically distributed about the longitudinal central line of the processing table 1, the hydraulic cylinder 2 is fixedly mounted at the top of the first mounting bosses 12, the bottom of the movable transverse table 3 is provided with two second mounting bosses 31, the two second mounting bosses 31 are symmetrically distributed about the longitudinal central line of the movable transverse table 3, the movable transverse table 3 is mounted at the tops of the two hydraulic cylinders 2 through the two second mounting bosses 31, the middle of the bottom of the movable transverse table 3 is fixedly connected with a first fixing plate 32, four corners of the bottom of the first fixing plate 32 are respectively provided with a positioning guide pillar 33, the middle of the top of the movable transverse table 3 is provided with the upper platen mechanism 4, the middle of the top of the processing table 1 is provided with a pressing disc mechanism 5, one side of the top of the processing table 1 is provided with a cutting mechanism 6, one end of the front side of the processing table 1 is provided with a PLC (programmable logic controller) 11, and the PLC 11 is XC 3-32T-E.
The upper platen mechanism 4 comprises a first mounting box 41, a first motor 42, a first bearing 43, an upper platen 44 and a pressure sensor 45, the first mounting box 41 is fixedly mounted in the middle of the top of the movable transverse table 3, a first mounting hole is formed in the middle of the top of the movable transverse table 3, the first bearing 43 is mounted in the first mounting hole, the first motor 42 is fixedly mounted in the first mounting box 41, an output shaft of the first motor 42 penetrates through the first bearing 43 and penetrates through the first fixing plate 32 to be connected with the upper platen 44, the output shaft of the first motor 42 is rotatably mounted in the first bearing 43, four pressure sensors 45 are arranged at the bottom of the upper platen 44, the four pressure sensors 45 are distributed at the bottom edge of the upper platen 44 at equal angles, and the four pressure sensors 45 are arranged at the bottom of the upper platen 44, so that the pressing signal of the blank A pressed by the upper platen 44 can be better monitored, is convenient for timely adjustment and avoids unbalanced extrusion.
The lower press plate mechanism 5 comprises a second fixing plate 51, a positioning guide sleeve 52, a lower press plate 53, a rotating boss 531 and a second motor 54, a first mounting groove is formed in the middle of the top of the machining table 1, the second motor 54 is fixedly mounted in the first mounting groove, an output shaft of the second motor 54 is connected with the lower press plate 53, the rotating boss 531 is arranged in the middle of the bottom of the lower press plate 53, the lower press plate 53 is rotatably mounted on the second fixing plate 51 through the rotating boss 531, the second fixing plate 51 is fixedly mounted in the middle of the top of the machining table 1, the positioning guide sleeve 52 is arranged at four corners of the top of the second fixing plate 51, and the position of the positioning guide sleeve 52 corresponds to the position of the positioning guide post 33 one to one.
The cutting mechanism 6 comprises an air cylinder 61, a third motor 62, a second mounting box 63, a third mounting box 64, a second bearing 65, a screw rod 66, a support rod 67, a moving mechanism 68, a moving plate 69, a connecting rod 70, a micro air cylinder 71, a first cutting knife 72, a second cutting knife 73, a mounting block 74 and a fixing pin 75, the air cylinder 61 is fixedly mounted at the top of the processing table 1, a piston rod of the air cylinder 61 is connected with the second mounting box 63, the third motor 62 is mounted inside the second mounting box 63, one side of the second mounting box 63 is connected with the third mounting box 64, an output shaft of the third motor 62 penetrates through the second mounting box 63 and the third mounting box 64 to be connected with the screw rod 66, one end of the screw rod 66 is rotatably mounted in the second bearing 65, the other end of the screw rod 66 is rotatably mounted on a side wall of the third mounting box 64 far away from the second mounting box 63, the second bearing 65 is fixedly mounted in the middle of a side wall of the third mounting box 64 close to the second mounting box 63, the lead screw 66 is located inside the third mounting box 64, two support rods 67 are arranged inside the third mounting box 64, the two support rods 67 are symmetrically distributed on the lead screw 66 in the vertical direction, the lead screw 66 is sleeved with a moving mechanism 68 in cooperation with the two support rods 67, two sides of the moving mechanism 68 are respectively engaged and connected with a moving plate 69, the tail of the moving plate 69 is fixedly connected to one end of a connecting rod 70 through a fixing pin 75, the other end of the connecting rod 70 penetrates through a mounting block 74 and extends to the outside of the third mounting box 64, the mounting block 74 is fixedly mounted on the third mounting box 64, the connecting rod 70 is fixedly mounted with a micro cylinder 71 far away from one side of the moving plate 69, the micro cylinder 71 is CJ1B4-20SU4, a piston rod of the micro cylinder 71 penetrates through the connecting rod 70 and is connected with a first cutting knife 72, the lower end is fixedly mounted with a second cutting knife 73 far away from one side of the connecting rod 70, the first cutting blade 72 position corresponds to the second cutting blade 73 position.
Moving mechanism 68 includes connecting block 681, guide block 682, tooth's socket 683, connecting block 681 cup joints on lead screw 66, connecting block 681 both sides all are provided with guide block 682, guide block 682 cup joints on bracing piece 67, two a plurality of tooth's socket 683 has all been seted up to the guide block 682 outside, movable plate 69 head is provided with the removal tooth 691, movable plate 69 is connected in guide block 682's tooth's socket 683 through the meshing of removal tooth 691.
The use method of the deburring device comprises the following steps:
step one, a blank A is placed on a lower pressing plate 53 of a deburring device, a PLC (programmable logic controller) 11 is used for regulating and controlling a hydraulic cylinder 2 to shrink downwards, a movable transverse table 3 is driven to move downwards, the movable transverse table 3 drives a first fixing plate 32 and an upper pressing plate 44 to move downwards together, the first fixing plate and the upper pressing plate are matched and positioned with a positioning guide sleeve 52 through a positioning guide post 33, when the upper pressing plate 44 is in pressing contact with the top surface of the blank A, a pressing signal is transmitted to the PLC 11 through a pressure sensor 45, and the PLC 11 controls the hydraulic cylinder 2 to stop shrinking;
step two, the third motor 62 is started to drive the screw rod 66 to rotate, the screw rod 66 drives the moving mechanism 68 to move transversely, the moving mechanism 68 drives the moving plate 69 and the connecting rod 70 to move transversely through the tooth groove 683 on the guide block 682, the connecting rod 70 drives the first cutting knife 72 and the second cutting knife 73 to move transversely to adjust the positions, and then the micro cylinder 71 is started to adjust the position of the first cutting knife 72;
and step three, after the position adjustment of the first cutting knife 72 and the second cutting knife 73 is finished, synchronously starting the first motor 42 and the second motor 54, enabling the rotation directions and the rotation speeds of the first motor 42 and the second motor 54 to be the same, driving the upper pressure plate 44 and the lower pressure plate 53 to rotate together, and performing deburring and chamfering on the top side edge and the bottom side edge of the blank A.
A production process of a high-voltage-resistant ceramic capacitor chip comprises the following steps:
SS 1: taking the raw materials according to the formula proportion, mixing the raw materials uniformly, and putting the uniformly mixed raw materials into a burning furnace for burning and melting;
SS 2: putting the raw materials after being sintered into a clean mould for solidification and forming to obtain a blank A;
SS 3: placing a blank A on a lower pressing plate 53 of a deburring device, regulating and controlling the contraction of a hydraulic cylinder 2 through a PLC (programmable logic controller) 11 to drive a movable transverse table 3 to move downwards, driving a first fixing plate 32 and an upper pressing plate 44 to move downwards through the movable transverse table 3, matching and positioning through a positioning guide post 33 and a positioning guide sleeve 52, when the upper pressing plate 44 is in pressing contact with the top surface of the blank A, transmitting a pressing signal to the PLC 11 through a pressure sensor 45, controlling the hydraulic cylinder 2 to stop contracting through the PLC 11, starting a third motor 62 and a micro cylinder 71 to adjust the positions of a first cutting knife 72 and a second cutting knife 73, synchronously starting the first motor 42 and the second motor 54 after the adjustment is finished, enabling the rotation directions and the rotation speeds of the first motor 42 and the second motor 54 to be the same, driving the upper pressing plate 44 and the lower pressing plate 53 to rotate together, deburring and chamfering the top side edge and the bottom side edge of the blank A, obtaining a blank B;
SS 4: carrying out surface rough grinding treatment on the blank B, and carrying out fine grinding treatment after the blank B reaches the specified thickness and flatness to obtain a blank C;
SS 5: placing the blank C in a replacement solution for sodium-potassium ion replacement treatment, then airing, and then performing glazing treatment on the surface or the outer circle of the blank C to obtain a blank D;
SS 6: and placing the blank D in baking equipment for primary baking treatment, coating positive and negative electrodes on two sides of the ceramic body after baking is finished, and placing the blank D in the baking equipment for secondary baking treatment to obtain the high-voltage-resistance ceramic capacitor chip.
The working principle of the invention is as follows:
placing the blank A on a lower pressing plate 53 of a deburring device, regulating and controlling the downward contraction of a hydraulic cylinder 2 through a PLC (programmable logic controller) 11, driving a movable transverse table 3 to move downwards, driving a first fixing plate 32 and an upper pressing plate 44 to move downwards together through the movable transverse table 3, matching and positioning through a positioning guide post 33 and a positioning guide sleeve 52, transmitting a pressing signal to the PLC 11 through a pressure sensor 45 when the upper pressing plate 44 is in pressing contact with the top surface of the blank A, and controlling the hydraulic cylinder 2 to stop contracting through the PLC 11; through the cooperation location of positioning guide pillar 33 and location guide pin bushing 52 for go up pressure disk 44 and pressure disk 53 position more stable accurate down, simultaneously through setting up four pressure sensor 45 in last pressure disk 44 bottom, pressure disk 44 compresses tightly blank A's the signal that compresses tightly on the monitoring that can be better, and the in time adjustment of being convenient for avoids the extrusion disequilibrium.
The third motor 62 is started to drive the screw rod 66 to rotate, the screw rod 66 drives the moving mechanism 68 to transversely move, the moving mechanism 68 drives the moving plate 69 and the connecting rod 70 to transversely move through the tooth groove 683 on the guide block 682, the connecting rod 70 drives the first cutting knife 72 and the second cutting knife 73 to transversely move to adjust the positions, and then the micro air cylinder 71 is started to adjust the position of the first cutting knife 72; after the position adjustment of the first cutting knife 72 and the second cutting knife 73 is finished, the first motor 42 and the second motor 54 are synchronously started, the rotation directions and the rotation speeds of the first motor 42 and the second motor 54 are the same, the upper pressure plate 44 and the lower pressure plate 53 are driven to rotate together, the top side edge and the bottom side edge of the blank A are subjected to deburring treatment and chamfering; the third motor 62 is arranged to drive the screw rod 66 to rotate, so that the moving mechanism 68 moves, the moving mechanism 68 can drive the first cutting knife 72 and the second cutting knife 73 to transversely adjust the positions, and meanwhile, the micro cylinder 71 can adjust the distance between the first cutting knife 72 and the second cutting knife 73, so that the whole cutting mechanism 6 can flexibly adjust the positions of the first cutting knife 72 and the second cutting knife 73, and burrs of blanks A with different diameters and thicknesses can be removed and chamfered; the whole device has functional diversity and improves the working efficiency.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (1)
1. A production process of a high-voltage-resistant ceramic capacitor chip is characterized by comprising the following steps:
SS 1: taking the raw materials according to the formula proportion, mixing the raw materials uniformly, and putting the uniformly mixed raw materials into a burning furnace for burning and melting; high withstand voltage's ceramic capacitor chip, including ceramic body and the positive negative pole of setting in ceramic body both sides, ceramic body includes major ingredient and auxiliary material, and the major ingredient includes Ba2Ti9O20、BaTi4O9、BaTi3O7、BaTi5O11And BaTi6O13The auxiliary materials comprise the following raw materials in percentage by mole: 4-5% of Si, 1.5-2.5% of Ca, 2.5-3.5% of As, 2-3% of K, 6-7% of Mo, 4-5.5% of In, 0.5-2% of I, and the following stable phases In mol percent: ba6Ti17O40 9-14%、Ba4Ti13O30 20-24%、TiO215-18% of metastable phase BaTi2O5；
SS 2: putting the raw materials after being sintered into a clean mould for solidification and forming to obtain a blank A;
SS 3: placing a blank A on a lower pressing plate (53) of a deburring device, regulating and controlling the contraction of a hydraulic cylinder (2) through a PLC (11) to drive a movable transverse table (3) to move downwards, driving a first fixing plate (32) and an upper pressing plate (44) to move downwards through the movable transverse table (3), matching and positioning the movable transverse table with a positioning guide sleeve (52) through a positioning guide post (33), transmitting a pressing signal to the PLC (11) through a pressure sensor (45) when the upper pressing plate (44) is in pressing contact with the top surface of the blank A, controlling the contraction of the hydraulic cylinder (2) by the PLC (11), starting a third motor (62) and a micro cylinder (71) to adjust the positions of a first cutting knife (72) and a second cutting knife (73), synchronously starting the first motor (42) and the second motor (54) after the adjustment is finished, and enabling the rotation directions and the rotation speeds of the first motor (42) and the second motor (54) to be the same, driving an upper pressing plate (44) and a lower pressing plate (53) to rotate together, deburring the side edge of the top and the side edge of the bottom of the blank A, and chamfering to obtain a blank B;
SS 4: carrying out surface rough grinding treatment on the blank B, and carrying out fine grinding treatment after the blank B reaches the specified thickness and flatness to obtain a blank C;
SS 5: placing the blank C in a replacement solution for sodium-potassium ion replacement treatment, then airing, and then performing glazing treatment on the surface or the outer circle of the blank C to obtain a blank D;
SS 6: placing the blank D in baking equipment for primary baking treatment, coating positive and negative electrodes on two sides of the ceramic body after baking is finished, and placing the blank D in the baking equipment for secondary baking treatment to obtain a high-voltage-resistant ceramic capacitor chip;
the deburring device in the step SS3 comprises a processing table (1), a hydraulic cylinder (2), a movable transverse table (3), an upper pressure plate mechanism (4), a lower pressure plate mechanism (5), a cutting mechanism (6) and a PLC (programmable logic controller) (11), wherein two first mounting bosses (12) are arranged at the top of the processing table (1), the two first mounting bosses (12) are symmetrically distributed about the longitudinal central line of the processing table (1), the hydraulic cylinder (2) is fixedly mounted at the top of each first mounting boss (12), two second mounting bosses (31) are arranged at the bottom of the movable transverse table (3), the two second mounting bosses (31) are symmetrically distributed about the longitudinal central line of the movable transverse table (3), the movable transverse table (3) is mounted at the tops of the two hydraulic cylinders (2) through the two second mounting bosses (31), and a first fixing plate (32) is fixedly connected in the middle of the bottom of the movable transverse table (3), four corners of the bottom of the first fixing plate (32) are respectively provided with a positioning guide post (33), the middle of the top of the movable transverse table (3) is provided with an upper pressure plate mechanism (4), the middle of the top of the processing table (1) is provided with a lower pressure plate mechanism (5), one side of the top of the processing table (1) is provided with a cutting mechanism (6), and one end of the front side of the processing table (1) is provided with a PLC (programmable logic controller) (11);
the upper pressure plate mechanism (4) comprises a first mounting box (41), a first motor (42), a first bearing (43), an upper pressure plate (44) and a pressure sensor (45), the first mounting box (41) is fixedly mounted in the middle of the top of the movable transverse table (3), a first mounting hole is arranged in the middle of the top of the movable transverse table (3), a first bearing (43) is arranged in the first mounting hole, a first motor (42) is fixedly arranged in the first mounting box (41), an output shaft of the first motor (42) penetrates through the first bearing (43) and penetrates through the first fixing plate (32) to be connected with an upper pressure plate (44), the output shaft of the first motor (42) is rotatably arranged in a first bearing (43), four pressure sensors (45) are arranged at the bottom of the upper pressure plate (44), and the four pressure sensors (45) are distributed at the edge of the bottom of the upper pressure plate (44) at equal angles;
the lower pressing disc mechanism (5) comprises a second fixing plate (51), positioning guide sleeves (52), a lower pressing disc (53), a rotating boss (531) and a second motor (54), a first mounting groove is formed in the middle of the top of the machining table (1), the second motor (54) is fixedly mounted in the first mounting groove, an output shaft of the second motor (54) is connected with the lower pressing disc (53), the rotating boss (531) is arranged in the middle of the bottom of the lower pressing disc (53), the lower pressing disc (53) is rotatably mounted on the second fixing plate (51) through the rotating boss (531), the second fixing plate (51) is fixedly mounted in the middle of the top of the machining table (1), the positioning guide sleeves (52) are arranged at four corners of the top of the second fixing plate (51), and the positions of the positioning guide sleeves (52) correspond to the positions of the positioning guide columns (33) one by one;
the cutting mechanism (6) comprises an air cylinder (61), a third motor (62), a second mounting box (63), a third mounting box (64), a second bearing (65), a screw rod (66), a support rod (67), a moving mechanism (68), a moving plate (69), a connecting rod (70), a micro air cylinder (71), a first cutting knife (72), a second cutting knife (73), a mounting block (74) and a fixing pin (75), the air cylinder (61) is fixedly mounted at the top of the processing table (1), a piston rod of the air cylinder (61) is connected with the second mounting box (63), the third motor (62) is mounted inside the second mounting box (63), one side of the second mounting box (63) is connected with the third mounting box (64), and an output shaft of the third motor (62) penetrates through the second mounting box (63) and the third mounting box (64) to be connected with the screw rod (66), the utility model discloses a lead screw, including lead screw (66), second bearing (65), lead screw (66) other end rotate install third mounting box (64) keep away from on the lateral wall of second mounting box (63) one side, second bearing (65) fixed mounting is in the middle of third mounting box (64) is close to the lateral wall of second mounting box (63) one side, lead screw (66) are located inside third mounting box (64), third mounting box (64) inside is provided with two bracing pieces (67), two bracing pieces (67) are about lead screw (66) longitudinal symmetry distribution, moving mechanism (68) has been cup jointed with two bracing pieces (67) cooperation in lead screw (66), moving mechanism (68) both sides all meshing connection has movable plate (69), the afterbody of movable plate (69) passes through fixed pin (75) fixed connection in the one end of connecting rod (70), the other end of the connecting rod (70) penetrates through the mounting block (74) and extends to the outside of the third mounting box (64), the mounting block (74) is fixedly mounted on the third mounting box (64), the side, far away from the moving plate (69), of the connecting rod (70) at the upper end is fixedly provided with the micro cylinder (71), a piston rod of the micro cylinder (71) penetrates through the connecting rod (70) and is connected with a first cutting knife (72), the side, far away from the moving plate (69), of the connecting rod (70) at the lower end is fixedly provided with a second cutting knife (73), and the position of the first cutting knife (72) corresponds to the position of the second cutting knife (73);
the moving mechanism (68) comprises a connecting block (681), guide blocks (682) and tooth grooves (683), wherein the connecting block (681) is sleeved on a screw rod (66), the guide blocks (682) are arranged on two sides of the connecting block (681), the guide blocks (682) are sleeved on a support rod (67), a plurality of tooth grooves (683) are formed in the outer sides of the two guide blocks (682), a moving tooth (691) is arranged at the head of the moving plate (69), and the moving plate (69) is connected in the tooth grooves (683) of the guide blocks (682) in a meshing manner through the moving tooth (691);
the use method of the deburring device comprises the following steps:
step one, a blank A is placed on a lower pressure plate (53) of a deburring device, a PLC (programmable logic controller) (11) is used for regulating and controlling a hydraulic cylinder (2) to shrink downwards, a movable transverse table (3) is driven to move downwards, the movable transverse table (3) drives a first fixing plate (32) and an upper pressure plate (44) to move downwards together, the first fixing plate and the upper pressure plate are matched and positioned with a positioning guide sleeve (52) through a positioning guide post (33), when the upper pressure plate (44) is in pressing contact with the top surface of the blank A, a pressing signal is transmitted to the PLC (11) through a pressure sensor (45), and the PLC (11) controls the hydraulic cylinder (2) to stop shrinking;
secondly, starting a third motor (62) to drive a screw rod (66) to rotate, driving a moving mechanism (68) to transversely move by the screw rod (66), driving a moving plate (69) and a connecting rod (70) to transversely move by the moving mechanism (68) through a tooth groove (683) on a guide block (682), driving a first cutting knife (72) and a second cutting knife (73) to transversely move by the connecting rod (70), adjusting the position, and then starting a micro air cylinder (71) to adjust the position of the first cutting knife (72);
and step three, after the position adjustment of the first cutting knife (72) and the second cutting knife (73) is finished, synchronously starting the first motor (42) and the second motor (54), enabling the rotation direction and the rotation speed of the first motor (42) and the second motor (54) to be the same, driving the upper pressing plate (44) and the lower pressing plate (53) to rotate together, and performing deburring treatment and chamfering treatment on the top side edge and the bottom side edge of the blank A.
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