Vacuum pressurized solidification molding apparatus for ceramic steel paper abrasive disc

Abstract

This invention discloses a vacuum pressure curing molding device for ceramic steel paper grinding discs, comprising: a frame with a vacuum cylinder mounted at its bottom and a vertical telescopic device two mounted at its top; a sealing cap for sealing the upper opening of the vacuum cylinder is mounted at the output end below the telescopic device two; a suction device for evacuating the vacuum cylinder cavity is mounted on the sealing cap; a support frame located at the center inside the vacuum cylinder, with a vertical telescopic device one at its center bottom; a placement seat mounted at the output end above the telescopic device one; a base disc ring placed on the upper end of the placement seat; a hot-melt mesh surface bonded to the upper surface of the base disc ring; a grinding ring placed above the outer annular surface of the hot-melt mesh surface; and a heating disc ring for heating the outer annular surface of the grinding ring located inside the upper end of the placement seat; an internal suction device capable of suctioning the annular outer edge of the horizontal layer containing the hot-melt mesh surface; and a telescopic device three vertically positioned at the center of the sealing cap, with a pressure head corresponding to the center surface of the grinding ring and the hot-melt mesh surface mounted at its lower output end.

Description

Technical Field

[0001] This invention relates to the field of abrasive manufacturing technology, specifically to a vacuum pressure curing molding equipment for ceramic steel paper grinding discs. Background Technology

[0002] Ceramic-paper grinding discs are grinding tools that use ceramic abrasive as the main grinding layer and a steel paper substrate as support. They are widely used in grinding metals, stone, and other materials. The grinding disc is typically composed of a substrate disc ring, a hot-melt mesh surface, and a grinding ring, all bonded together and cured. The quality of the curing process directly determines the bonding strength, grinding performance, and service life of the grinding disc.

[0003] Existing grinding disc curing methods mostly employ atmospheric pressure hot pressing or direct pressure molding using ordinary presses. During the curing process, it is difficult to completely expel air from the bonding interface, which can easily leave air bubbles in the adhesive layer, forming hollow areas or weak bonding zones, thus affecting the bonding strength between the grinding ring and the substrate disc ring.

[0004] Furthermore, the surface of the grinding ring typically has a certain degree of unevenness, making it difficult for a standard flat indenter to fully adhere to the surface. This can easily lead to insufficient pressure or ring misalignment during pressurization, resulting in uneven adhesive layer thickness. If the entire workpiece is heated during curing, significant heat loss occurs, and thermal deformation of the substrate disc and grinding ring can easily occur. Simultaneously, adhesive overflowing during pressurization tends to accumulate along the outer edge of the grinding ring, making it difficult to collect. This not only affects the product's appearance but also increases the workload of subsequent cleaning.

[0005] Therefore, it is necessary to provide a ceramic steel paper grinding disc vacuum pressure curing molding equipment to solve the problems mentioned in the background art. Summary of the Invention

[0006] To achieve the above objectives, the present invention provides the following technical solution: a ceramic steel paper grinding disc vacuum pressure curing molding equipment, comprising: The frame has a vacuum cylinder installed at its bottom and a vertical telescopic device 2 installed at its top. A sealing cap is installed at the output end below the telescopic device 2 to seal the upper opening of the vacuum cylinder. A suction device 1 for suctioning the vacuum cylinder cavity is installed on the sealing cap. A support frame is located at the center inside the vacuum cylinder. A vertical telescopic device is located at the bottom of the center. A placement seat is installed at the output end above the telescopic device. A base disc ring is placed on the upper end of the placement seat. A hot melt mesh surface is bonded to the upper end of the base disc ring. A uniform adhesive liquid is distributed on the outer ring surface of the hot melt mesh surface by dispensing. A grinding ring is placed above the outer ring surface of the hot melt mesh surface. A heating disc ring for heating the outer ring surface of the grinding ring is also provided inside the upper end of the placement seat. The internal suction device is installed in a ring shape at the upper end of the support frame, and can suction the outer edge of the ring of the horizontal layer where the hot melt mesh is located; The third expansion joint is vertically positioned at the center of the sealing cover, and its output end is equipped with a pressure head corresponding to the center area of ​​the grinding ring and the hot melt mesh.

[0007] Furthermore, the internal suction device includes: The rotating device is located on the upper end of the support frame and coaxially outside the placement seat. Multiple suction components are distributed on it. The multiple suction components are evenly arranged in a circle on the outer edge of the hot melt mesh surface, and each suction component is connected to a suction device. A flow-blocking plate is placed between adjacent suction components to block the flow at the outer edge of the hot melt mesh surface between adjacent suction components.

[0008] Furthermore, the rotating device includes: The rotating ring rotates at the upper end of the support frame; The driver is mounted on the support frame. Its output end is equipped with a drive wheel that contacts the outer wall of the rotating ring. The driver can control the drive wheel to drive the rotating ring to rotate back and forth. The angle at which the rotating ring can rotate back and forth is the same as the angle between the adjacent suction components.

[0009] Furthermore, the suction assembly includes: The base is mounted on the swivel. The fourth telescopic device is horizontally oriented towards the axis of the placement seat, and a suction head is installed at its output end near the placement seat. One end of the conduit is connected to the suction head, and the other end is connected to the suction device 2 located outside the vacuum cylinder. The conduit 1 located inside the vacuum cylinder has a reserved section for the movement of the mounting bracket.

[0010] Furthermore, the suction head includes: The suction arc block has its outer wall connected to the four output ends of the telescopic device. Its inner arc wall has a suction groove facing the placement seat. The upper part of the bottom of the suction groove is connected to the first guide tube. A baffle plate is provided at the lower part of the suction groove opening. The suction groove inside the baffle plate forms a glue collection cavity. Vertical scraper strips are provided on both sides of the upper part of the baffle plate. The scraper strips can scrape the outer edge of the hot melt mesh surface when the suction head rotates around. The rotating rollers are vertically positioned on the left and right sides of the suction arc block, and are covered with rubber sleeves to seal the left and right sides of the suction groove. Rubber belts are installed on the upper and lower sides of the vertical suction arc block to block the upper and lower sides of the vertical suction groove.

[0011] Furthermore, the upper end of the adhesive baffle is provided with an overflow slope, which is used to introduce the adhesive overflowing from the outer edge of the hot melt mesh into the adhesive collection cavity.

[0012] Furthermore, a liquid level sensor for monitoring the liquid level in the adhesive collection chamber is provided at the top of the bottom of the suction tank.

[0013] Furthermore, the flow-blocking plate includes: An elastic outer arc plate is connected to the adjacent suction arc block; The elastic flow-blocking arc block is installed on the inner side of the elastic outer arc plate to block the outer edge area of ​​the hot melt mesh between the suction heads.

[0014] Furthermore, the placement seat includes: The support block is connected to one output end of the telescopic device; The airflow channels are located inside the support block and are arranged in multiple evenly around the circumference. Their upper ends are connected to the inner edge of the hot melt mesh surface, and their lower ends penetrate the lower end of the support block and are connected to the vacuum cylinder cavity.

[0015] Furthermore, the pressure head includes: The pressure block is connected to the output end of the expansion joint three. The outer ring area at its lower end is provided with a circular groove evenly distributed around the circumference. The groove opening is covered with a breathable disc. The upper end of the pressure block is provided with a conduit two connected to the circular groove. The conduit two is also connected to the suction device three located on the sealing cover. The conduit two located inside the sealing cover has a reserved section for cooperating with the movement of the pressure block. The pressure equalizing heat-conducting ring pad is fixed on the outer ring surface area at the lower end of the pressure block and is set in accordance with the grinding ring. The pressure equalizing heat-conducting ring pad area corresponding to the venting disc is provided with venting holes.

[0016] Compared with the prior art, the present invention provides a ceramic steel paper grinding disc vacuum pressure curing molding equipment, which has the following beneficial effects: 1. In this invention, the vacuum cylinder, sealing cap, suction device, and airflow channel work together with the internal suction device to form a through airflow path from the inner edge to the outer edge of the bonding interface. This ensures that the gas is fully discharged, preventing residual air bubbles from forming voids or weak bonding areas after curing, and ensuring the compactness and uniformity of the bonding interface between the grinding ring and the substrate disc ring.

[0017] 2. In this invention, the heating disc ring only directionally heats the outer ring surface area of ​​the grinding ring, resulting in concentrated heat, rapid temperature rise, low energy consumption, and reduced heat transfer to the central area, thereby reducing the risk of thermal deformation of the base disc ring and the grinding ring as a whole.

[0018] 3. In this invention, the pressure head uses a breathable disc, vent holes, and a pressure-equalizing heat-conducting ring pad to adsorb, fix, and uniformly pressurize the grinding ring. This allows it to adapt to grinding rings with uneven surfaces, ensuring accurate positioning and uniform force distribution. It also takes into account the pressure fusion of the remaining hot-melt mesh surface in the central area, thus improving the consistency of bonding strength at various locations after curing.

[0019] 4. In this invention, the internal suction device, combined with the flow-blocking plate, reciprocates along the outer edge of the hot melt mesh surface to concentrate negative pressure and guide the adhesive liquid to flow in a directional manner along a defined path. This, along with the exhaust of the inner edge of the air guide channel, forms a through gas-liquid flow path, preventing the adhesive liquid from overflowing and gas residue from remaining, and reducing the adhesive liquid cleaning process after molding.

[0020] 5. In this invention, the suction device 2 is connected to the suction components one by one. The suction start and stop and suction force of each suction component can be controlled independently. Combined with the segmented sealing of the flow-blocking plate, it forms a zoned precise glue extraction. The thickness of the glue layer is uniform throughout the circle. Moreover, if a single suction component malfunctions, it will not affect other sections, and the equipment has high reliability.

[0021] 6. In this invention, the suction head forms a sealed suction space by enclosing the suction groove, the glue baffle, the rotating roller, the rubber sleeve and the rubber belt. With the help of the scraper, it can achieve thorough and dead-angle-free glue extraction. The overflow slope introduces the overflow glue into the glue collection chamber. The liquid level sensor monitors the glue level in real time. The glue is collected in a centralized manner and the degree of automation is high.

[0022] 7. In this invention, the rotating device drives the rotating ring to swing back and forth through the drive wheel. The movement stroke is small and avoids pipe entanglement. The four-drive suction head of the telescopic device extends and retracts radially, which can adapt to grinding discs of different specifications within a certain range. It has good versatility and improves production efficiency while ensuring curing quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the vacuum pressure curing molding equipment of the present invention; Figure 2 This is a schematic cross-sectional view of the internal suction device of the present invention. Figure One ; Figure 3 This is a schematic cross-sectional view of the internal suction device of the present invention. Figure Two ; Figure 4 This is a schematic diagram of the unfolded structure of the suction head of the present invention; Figure 5 This is a schematic diagram of the overflow inclined surface structure of the present invention; In the diagram: 1. Frame; 2. Vacuum cylinder; 3. Support frame; 4. Expansion joint one; 5. Placement seat; 6. Internal suction device; 7. Expansion joint two; 8. Sealing cover; 9. Expansion joint three; 10. Suction unit one; 11. Pressure head; 12. Matrix disc ring; 13. Hot melt mesh surface; 14. Grinding ring; 15. Heating disc ring; 51. Support block; 52. Airflow channel; 61. Suction unit two; 62. Rotating device; 63. Suction assembly; 64. Baffle plate; 65. Suction head; 621. Driver; 622. Drive wheel; 623. Rotating ring ; 631. Conduit 1; 632. Seat; 633. Expansion Joint 4; 641. Elastic Outer Arc Plate; 642. Elastic Flow-Blocking Arc Block; 651. Suction Arc Block; 652. Rubber Belt; 653. Rotating Roller; 654. Rubber Sleeve; 655. Suction Groove; 656. Baffle Plate; 657. Scraper Strip; 658. Liquid Level Sensor; 659. Overflow Inclined Surface; 111. Suction Device 3; 112. Pressure Block; 113. Circular Groove; 114. Conduit 2; 115. Ventilation Disc; 116. Pressure Equalizing and Heat-Conducting Ring Pad; 117. Vent Hole. Detailed Implementation

[0024] Reference Figures 1-5 This invention provides a technical solution: a vacuum pressure curing molding device for ceramic steel paper grinding discs, used to cure and mold the grinding ring 14 onto the substrate disc ring 12 through a hot melt mesh surface 13 under high vacuum, heating, and pressure conditions, thereby achieving vacuum pressure curing molding of ceramic steel paper grinding discs. This device combines vacuum degassing, directional heating, uniform pressure, outer edge adhesive extraction, and inner edge degassing, which can improve the density, uniformity, and reliability of the bonding interface between the grinding ring 14 and the substrate disc ring 12.

[0025] In this embodiment, the ceramic steel paper grinding disc vacuum pressure curing molding equipment includes a frame 1, a vacuum cylinder 2, a support frame 3, a telescopic device 4, a placement seat 5, an internal suction device 6, a second telescopic device 7, a sealing cover 8, a third telescopic device 9, a suction device 10, and a pressure head 11. The vacuum cylinder 2 is installed at the bottom of the frame 1, and a vertical telescopic device 7 is installed at the top of the frame 1. A sealing cover 8 is installed at the output end below the second telescopic device 7 to seal the upper opening of the vacuum cylinder 2. A suction device 10 is installed on the sealing cover 8 to suction the cavity of the vacuum cylinder 2. The support frame 3 is located at the center inside the vacuum cylinder 2. A vertical telescopic device 4 is located at the bottom center of the support frame 3. A placement seat 5 is installed at the output end above the telescopic device 4. A base disc ring 12 is placed on the upper end of the placement seat 5. A hot melt mesh surface 13 is bonded to the upper surface of the base disc ring 12. The outer ring surface of the hot melt mesh surface 13 is uniformly distributed by dispensing adhesive. The adhesive is applied to the outer ring surface of the hot melt mesh 13, and a grinding ring 14 is placed above it. The upper end of the placement seat 5 is also equipped with a heating disc ring 15 to heat the outer ring surface of the grinding ring 14. The internal suction device 6 is installed in a ring shape on the upper end of the support frame 3, and can suction the outer edge of the horizontal layer where the hot melt mesh 13 is located. The telescopic device 3 9 is vertically set in the center of the sealing cover 8, and the output end of the telescopic device 3 9 is equipped with a pressure head 11 corresponding to the center surface of the grinding ring 14 and the hot melt mesh 13. That is to say, after the sealing cover 8 seals the vacuum cylinder 2, the suction device 10 draws a vacuum, so that the substrate disc ring 12, the hot melt mesh 13 and the grinding ring 14 are heated, pressurized and cured in a vacuum environment. At the same time, the internal suction device 6 suctions the outer edge of the hot melt mesh 13 to guide the adhesive and discharge the gas, thereby ensuring the bonding quality between the grinding ring 14 and the substrate disc ring 12.

[0026] In this embodiment, the placement seat 5 includes a support block 51 and airflow channels 52. The support block 51 is connected to the output end above the telescopic device 4 and is used to support the placement base disc ring 12. Multiple airflow channels 52 are arranged evenly around the circumference within the support block 51. The upper end of the airflow channels 52 communicates with the inner edge of the hot-melt mesh surface 13, and the lower end of the airflow channels 52 penetrates the lower end of the support block 51 and communicates with the cavity of the vacuum cylinder 2. That is, when the vacuum cylinder 2 is evacuated, the gas on one side of the inner edge of the hot-melt mesh surface 13 can... The gas is discharged downward through the airflow channel 52, cooperating with the suction formed by the inner suction device 6 at the outer edge of the ring, so that the gas at the bonding interface is fully discharged along the through path from the inner edge to the outer edge; the adhesive liquid that is squeezed out or sucked during the curing process can fall onto the remaining hot melt mesh surface 13 in the central area for fusion and curing; furthermore, the rotating device 62 of the inner suction device 6 is arranged coaxially in a ring outside the placement seat 5, and multiple suction components 63 on it are evenly distributed along the circumference of the outer edge of the hot melt mesh surface 13, and multiple The airflow channels 52 are also evenly distributed circumferentially within the support block 51 and connect to the inner edge of the hot melt mesh surface 13. The two correspond radially inside and outside and are evenly spaced circumferentially, so that the annular adhesive layer of the hot melt mesh surface 13 can simultaneously obtain exhaust and suction at the inner and outer edges, covering the entire annular adhesive area and avoiding local exhaust or insufficient suction. The flow-blocking plate 64 divides the outer edge of the annular area into several segments for sealing and guidance. The airflow channels 52 exhaust gas evenly along the inner edge. The two complement each other circumferentially, which can avoid the formation of exhaust or suction dead zones. Through the cooperation of the airflow channels 52 and the inner suction device 6, the adhesive interface can form a through airflow path from the inner edge to the outer edge, and the gas is fully discharged to avoid residual air bubbles forming hollow areas or weak adhesive areas after curing. At the same time, the adhesive squeezed out towards the center can fall on the remaining hot melt mesh surface 13 in the central area to participate in fusion and curing, which not only improves the utilization rate of the adhesive, but also enhances the connection strength between the central area and the inner edge of the grinding ring 14, so that the cured ceramic steel paper grinding disc is evenly and firmly bonded.

[0027] In this embodiment, the internal suction device 6 includes a rotating device 62 and a flow-blocking plate 64. The rotating device 62 is located at the upper end of the support frame 3 and coaxially disposed outside the placement seat 5. Multiple suction components 63 are distributed on the rotating device 62, and these components are evenly arranged circumferentially on the outer edge of the hot-melt mesh surface 13. Each suction component 63 is connected to a suction device 61. The flow-blocking plate 64 is disposed between adjacent suction components 63 and blocks the flow at the outer edge of the hot-melt mesh surface 13 between adjacent suction components 63. The suction device 61 draws suction from the outer edge of the hot melt mesh surface 13 through each suction component 63. The flow-blocking plate 64 seals the gaps between adjacent suction components 63, reducing the suction area and concentrating the suction range, allowing the adhesive to flow along the defined path while simultaneously drawing out the gas. Furthermore, the suction device 61 is connected one-to-one with the suction components 63, and each suction head 65 is provided with suction negative pressure by an independent suction device 61. The start / stop and suction force of each suction component 63 can be independently controlled without interference. During the reciprocating rotation of the rotating ring 623, the suction intensity of the corresponding suction component 63 can be individually adjusted according to the adhesive distribution in different sections of the outer edge of the hot melt mesh surface 13, achieving precise zonal suction and making the adhesive layer thickness more uniform throughout the ring, avoiding excessive or insufficient local suction. Simultaneously, the segmented sealing of the flow-blocking plate 64 corresponds to each suction component 63, dividing the outer edge of the hot melt mesh surface 13 into multiple independent suction sections, ensuring clear suction positions and precise control. If a single suction device 61 or suction component 63 malfunctions, it only affects that section. In the section, the remaining suction components 63 can still maintain suction, which facilitates fault isolation and maintenance, and improves the reliability and fault tolerance of the equipment. Through the cooperation of the rotating device 62 and the flow-blocking plate 64, the equipment can perform concentrated and orderly suction on the outer edge of the hot melt mesh surface 13. After the negative pressure is concentrated, it can guide the adhesive to flow in a directional manner along the defined path, avoiding arbitrary overflow, accumulation or spillage of the adhesive during the curing process, thereby ensuring the uniformity of the adhesive layer on the outer edge of the grinding ring 14, reducing the adhesive cleaning process after molding, and improving the consistency of product appearance and production efficiency.

[0028] In this embodiment, the rotating device 62 includes a rotating ring 623 and a driver 621. The rotating ring 623 is rotatably mounted on the upper end of the support frame 3. The driver 621 is mounted on the support frame 3. The output end of the driver 621 is equipped with a drive wheel 622 that contacts the outer wall of the rotating ring 623. The driver 621 can control the drive wheel 622 to drive the rotating ring 623 to reciprocate. The angle at which the rotating ring 623 can reciprocate is the same as the angle between the adjacent suction components 63. That is, the rotating ring 623 rotates according to the angle between the adjacent suction components 63. The oscillating motion at intervals allows each suction component 63 to scan and cover the outer edge of the hot melt mesh surface 13 segment by segment, thereby achieving full-circle glue extraction and gas discharge. By oscillating at intervals between adjacent suction components 63, each suction component 63 can scan the entire outer edge of the hot melt mesh surface 13 segment by segment without continuous full-circle rotation. The motion stroke is small, the control is simple, and the response is rapid. At the same time, it can avoid the guide tube 631 from getting tangled or excessively bent due to continuous rotation, making the suction process continuous and reliable. It can also be adapted to grinding discs of different diameters, making it highly versatile.

[0029] In this embodiment, the suction assembly 63 includes a base 632, a telescopic device 633, and a conduit 631. The base 632 is mounted on a rotating ring 623. The telescopic device 633 is horizontally oriented towards the axis of the placement seat 5. A suction head 65 is mounted on the telescopic device 633 near the output end of the placement seat 5. One end of the conduit 631 is connected to the suction head 65, and the other end of the conduit 631 is connected to a second suction device 61 located outside the vacuum cylinder 2. The conduit 631 located inside the vacuum cylinder 2 has a reserved section for movement of the base 632. That is, the suction head 65 can move within the telescopic device 633. Driven radially towards or away from the outer edge of the hot melt mesh surface 13, and moving circumferentially with the rotating ring 623, the suction head 65 is used in conjunction with the pipe section to ensure that the suction channel remains connected during the movement of the suction head 65; the suction head 65 is driven to extend and retract radially by the expansion joint 633, and the suction head 65 can keep close to the outer edge of the hot melt mesh surface 13 of different specifications of grinding discs within a certain range, adapting to various sizes of base disc rings 12 and grinding rings 14, with good versatility; the pipe section can keep the suction channel connected during the movement of the base frame 632, ensuring uninterrupted suction, improving the equipment's adaptability to different workpieces and suction stability.

[0030] In this embodiment, the suction head 65 includes a suction arc block 651, a rotating roller 653, and a rubber belt 652. The outer wall of the suction arc block 651 is connected to the output end of the telescopic device 633. The inner arc wall of the suction arc block 651 is provided with a suction groove 655 facing the placement seat 5. The upper part of the side groove bottom of the suction groove 655 is connected to the guide tube 631. A baffle plate 656 is provided at the lower part of the side groove opening of the suction groove 655. The suction groove 655 inside the baffle plate 656 forms a glue collection cavity. Vertical scraper strips 657 are provided on both sides of the upper end of the baffle plate 656. The scraper strips 657 can scrape the outer edge of the hot melt mesh surface 13 when the suction head 65 rotates circumferentially. The rotating roller 653 is vertically arranged on the left and right sides of the suction arc block 651 horizontally. The outside of the rotating roller 653 is covered with a rubber sleeve 654 to seal the left and right sides of the suction groove 655 horizontally. 652 is respectively located on the upper and lower sides of the vertical suction arc block 651 to seal the upper and lower sides of the vertical suction groove 655. That is, the suction groove 655 and the outer edge of the hot melt mesh surface 13 enclose a sealed suction space. The second suction device 61 sucks the overflowing glue from the outer edge into the glue collection chamber through the first conduit 631. The scraper 657 moves with the suction head 65 to scrape the glue from the outer edge. The rotating roller 653, rubber sleeve 654 and rubber belt 652 seal the left and right sides and the upper and lower sides of the suction groove 655 respectively to prevent air and glue leakage. Through this sealed suction structure, the suction head 65 can maintain a stable negative pressure environment during movement, and the glue is completely extracted without dead corners. The scraper 657 can guide the overflowing glue into the glue collection chamber in time, which not only avoids glue residue affecting the bonding quality and product appearance, but also makes full use of the suction force, improving the suction efficiency and glue collection effect.

[0031] In this embodiment, the upper end of the baffle plate 656 is provided with an overflow slope 659, which is used to introduce the glue overflowing from the outer edge of the hot melt mesh surface 13 into the glue collection chamber; the top of the side bottom of the suction tank 655 is provided with a liquid level sensor 658, which is used to monitor the height of the glue in the glue collection chamber; that is, the glue overflowing from the outer edge gathers along the overflow slope 659 and enters the glue collection chamber, and the liquid level sensor 658 monitors the glue height in real time, which facilitates timely discharge of glue or adjustment of suction, and avoids glue entering the suction channel; guided by the overflow slope 659, the glue overflowing from the outer edge can be concentrated into the glue collection chamber, the glue is collected in an orderly manner, and does not pollute the internal environment of the vacuum cylinder 2; the liquid level sensor 658 monitors the glue height in the glue collection chamber in real time, and when the glue reaches the set height, it can discharge glue or adjust suction in time, avoiding glue overflowing into the suction channel and causing blockage, thus improving the safety and automation of equipment operation.

[0032] In this embodiment, the flow-blocking plate 64 includes an elastic outer arc plate 641 and an elastic flow-blocking arc block 642. The elastic outer arc plate 641 is connected to an adjacent suction arc block 651, and the elastic flow-blocking arc block 642 is installed on the inner side of the elastic outer arc plate 641 to block the outer edge area of ​​the hot melt mesh surface 13 between the suction heads 65. That is, the elastic flow-blocking arc block 642 is attached to the outer edge of the hot melt mesh surface 13 to form a flow-blocking seal, reducing the suction area of ​​the suction head 65 and guiding the adhesive to flow along the channel defined by the suction groove 655, preventing the adhesive in the unsuctioned area from overflowing and losing, while ensuring that the gas is fully discharged, and is in contact with the support block 51. The airflow channel 52 works in conjunction with the airflow channel to form a complete gas-liquid flow path with concentrated suction at the outer edge and continuous exhaust at the inner edge. The elastic outer arc plate 641 and the elastic flow-blocking arc block 642 can adhere to the outer edge of the hot melt mesh surface 13, adapting to the circumferential curvature of the outer edge, so that the negative pressure is concentrated in the area corresponding to the suction groove 655, guiding the adhesive to flow in a directional manner along the defined channel, while sealing the uncovered area between adjacent suction heads 65 to prevent the adhesive from overflowing during the movement of the suction head. In conjunction with the exhaust at the inner edge of the airflow channel 52, the adhesive is evenly distributed and the gas is fully discharged, thereby avoiding bubbles, voids and adhesive overflow, and improving the curing quality.

[0033] In this embodiment, the pressure head 11 includes a pressure block 112, a ventilated disc 115, and a pressure equalizing and heat-conducting ring pad 116. The pressure block 112 is connected to the output end below the telescopic device 9. The lower outer ring surface of the pressure block 112 is provided with circumferentially evenly distributed circular grooves 113. The opening of the circular grooves 113 is covered by the ventilated disc 115. The upper end of the pressure block 112 is provided with a conduit 114 connected to the circular grooves 113. The conduit 114 is also connected to the suction device 3 provided on the sealing cover 8. The conduit 114, located within the sealing cap 8, is pre-installed with a matching section for the movement of the pressure block 112. The pressure-equalizing heat-conducting ring pad 116 is fixed to the outer ring surface area at the lower end of the pressure block 112 and is correspondingly positioned to the grinding ring 14. A vent hole 117 is provided in the area of ​​the pressure-equalizing heat-conducting ring pad 116 corresponding to the venting disc 115. In other words, the suction device 111 generates suction force at the venting disc 115 via the conduit 114 and the groove 113, and the suction force passes through the vent hole 117. Acting locally on the grinding ring 14, the pressure-equalizing heat-conducting ring pad 116 utilizes its flexibility to form a sealing structure in the area outside the vent hole 117, enabling the pressure head 11 to adsorb and fix the uneven surface of the grinding ring 14, while uniformly transmitting pressure to the entire annular surface of the grinding ring 14; the suction force is transmitted to the local area of ​​the grinding ring 14 through the vent disk 115 and the vent hole 117, and with the flexible seal formed by the pressure-equalizing heat-conducting ring pad 116 in the area outside the vent hole 117, the pressure head 11 can effectively apply pressure to the surface of the grinding ring 14. The uneven surface of the grinding ring 14 is adsorbed and fixed, ensuring accurate positioning and preventing displacement of the grinding ring 14 before and during pressurization. This ensures that the grinding ring 14 is coaxially bonded with the hot melt mesh surface 13 and the substrate disc ring 12. The pressure equalizing and heat-conducting ring pad 116 simultaneously transmits pressure evenly to the entire annular surface of the grinding ring 14, while also taking into account the pressurization of the remaining exposed hot melt mesh surface 13 in the central area of ​​the substrate disc ring 12. This ensures that the force is uniform at all positions of the bonding interface, improving the consistency of bonding strength at all points of the grinding disc after curing.

[0034] In specific implementation, its working principle is as follows: First, the substrate disc ring 12 is placed on the placement seat 5. The upper end face of the substrate disc ring 12 has been bonded with the hot melt mesh surface 13. The glue is evenly distributed on the outer ring surface area of ​​the hot melt mesh surface 13 by dispensing. Then, the grinding ring 14 is placed above the outer ring surface area of ​​the hot melt mesh surface 13. The telescopic device 1 4 drives the placement seat 5 to adjust the height, so that the workpiece enters the molding station in the vacuum cylinder 2. The telescopic device 2 7 drives the sealing cover 8 to move downward, sealing the upper end of the vacuum cylinder 2. The suction device 1 10 suctions the cylinder cavity of the vacuum cylinder 2, so that the molding space is in a vacuum state, and the gas around the workpiece and the bonding interface is discharged to avoid the formation of bubbles in the glue, so as to provide a bubble-free molding environment for subsequent heating and pressure curing.

[0035] During the curing process, the heating disc ring 15 heats the outer ring surface of the grinding ring 14, causing the hot melt mesh surface 13 and the adhesive to melt. The telescopic device 3 9 drives the pressure head 11 to move downwards. The pressure block 112 applies pressure to the entire annular surface of the grinding ring 14 through the pressure equalizing and heat-conducting ring pad 116. The central area of ​​the pressure head 11 corresponds to and applies pressure to the remaining exposed hot melt mesh surface 13 in the central area of ​​the base disc ring 12. At the same time, the suction device 3 111 performs local suction on the grinding ring 14 through the conduit 2 114, the circular groove 113, the venting disc 115, and the venting hole 117. The pressure equalizing and heat-conducting ring pad 116 forms a flexible seal in the area outside the venting hole 117, achieving adsorption and fixation of the uneven surface of the grinding ring 14 and uniform pressure. Meanwhile, the driver 621 of the inner suction device 6 drives the rotating ring 623 to reciprocate at the angle between the adjacent suction components 63 through the drive wheel 622, telescopically extending and retracting. Device 4 (633) drives suction head 65 to adhere to the outer edge of hot melt mesh surface 13. Suction device 2 (61) suctions the outer edge of hot melt mesh surface 13 through conduit 1 (631). Suction groove 655, baffle plate 656, roller 653 and rubber belt 652 enclose a sealed suction area. Scraper 657 scrapes the outer edge adhesive as suction head 65 moves. Flow baffle plate 64 blocks the area between adjacent suction heads 65 and reduces the suction area, guiding the adhesive to flow along the defined channel. Overflow adhesive enters the collection chamber through overflow slope 659. Liquid level sensor 658 monitors the adhesive level in the collection chamber in real time. At the same time, airflow channel 52 in support block 51 guides the gas from the inner edge of hot melt mesh surface 13 downward to the cylinder cavity of vacuum cylinder 2, cooperating with the outer edge suction of inner suction device 6 to fully discharge the gas at the bonding interface. The squeezed adhesive falls onto the remaining hot melt mesh surface 13 in the central area for fusion and curing. Through the above process, uniform pressure, adsorption positioning, outer edge glue extraction and inner edge air venting are completed simultaneously during curing, so that the adhesive liquid and the hot melt mesh surface 13 are fully integrated to form a dense and uniform bonding interface.

[0036] After pressure holding and curing are completed, heating is stopped, and vacuum and pressure are maintained to allow the adhesive to fully cure and form. Then, suction from suction device 2 61, suction device 3 111, and suction device 1 10 is stopped. Telescopic device 3 9 drives the pressure head 11 to rise, telescopic device 2 7 drives the sealing cover 8 to rise to open the vacuum cylinder 2, and telescopic device 1 4 drives the placement seat 5 to rise. The cured ceramic steel paper grinding disc is then removed. The cured ceramic steel paper grinding disc has a dense bonding interface, a uniform adhesive layer, and a firm bond between the grinding ring 14 and the base disc ring 12. There is no adhesive overflow or residue on the surface, and the molding quality and appearance are highly consistent.

[0037] The above description is merely a preferred embodiment of the invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A ceramic steel paper grinding disc vacuum pressure curing molding equipment, characterized in that, It includes: The frame (1) has a vacuum cylinder (2) installed at its bottom and a vertical telescopic device (7) installed at its top. A sealing cap (8) is installed at the output end below the telescopic device (7) to seal the upper opening of the vacuum cylinder (2). A suction device (10) for suctioning the cavity of the vacuum cylinder (2) is provided on the sealing cap (8). The support frame (3) is located inside the vacuum cylinder (2) at the center. A vertical telescopic device (4) is provided at the bottom of the center. A placement seat (5) is installed at the output end above the telescopic device (4). A base disc ring (12) is placed on the upper end of the placement seat (5). A hot melt mesh surface (13) is bonded to the upper end of the base disc ring (12). A uniform adhesive liquid is distributed on the outer ring surface of the hot melt mesh surface (13) by dispensing. A grinding ring (14) is placed above the outer ring surface of the hot melt mesh surface (13). A heating disc ring (15) for heating the outer ring surface of the grinding ring (14) is also provided inside the upper end of the placement seat (5). The internal suction device (6) is installed in a ring shape at the upper end of the support frame (3) and can suction the outer edge of the ring of the horizontal layer where the hot melt mesh surface (13) is located; The expansion joint three (9) is vertically set in the center of the sealing cover (8), and the output end below it is equipped with a pressure head (11) corresponding to the center area of ​​the grinding ring (14) and the hot melt mesh surface (13).

2. The ceramic steel paper grinding disc vacuum pressure curing molding equipment according to claim 1, characterized in that, The internal suction device (6) includes: The rotating device (62) is located on the upper end of the support frame (3) and coaxially located outside the placement seat (5). Multiple suction components (63) are distributed on it. The multiple suction components (63) are evenly arranged in a circle on the outer edge of the hot melt mesh surface (13), and each suction component (63) is connected to a suction device (61). A flow-blocking plate (64) is disposed between adjacent suction components (63) and blocks the flow of the outer edge of the hot melt mesh surface (13) between adjacent suction components (63).

3. The ceramic steel paper grinding disc vacuum pressure curing molding equipment according to claim 2, characterized in that, The rotating device (62) includes: The rotating ring (623) rotates on the upper end of the support frame (3); The driver (621) is mounted on the support frame (3). Its output end is equipped with a drive wheel (622) that contacts the outer wall of the rotating ring (623). The driver (621) can control the drive wheel (622) to drive the rotating ring (623) to rotate back and forth. The angle at which the rotating ring (623) can rotate back and forth is the same as the angle between the adjacent suction components (63).

4. The ceramic steel paper grinding disc vacuum pressure curing molding equipment according to claim 3, characterized in that, The suction assembly (63) includes: The bracket (632) is mounted on the swivel (623); The telescopic device four (633) is horizontally oriented towards the axis of the placement seat (5), and a suction head (65) is installed near the output end of the placement seat (5). The first conduit (631) is connected at one end to the suction head (65) and at the other end to the suction device (61) located outside the vacuum cylinder (2). The first conduit (631) located inside the vacuum cylinder (2) has a reserved section for the movement of the matching seat (632).

5. The ceramic steel paper grinding disc vacuum pressure curing molding equipment according to claim 4, characterized in that, The suction head (65) includes: The suction arc block (651) has its outer wall connected to the output end of the expansion joint four (633). Its inner arc wall is provided with a suction groove (655) facing the placement seat (5) laterally. The upper part of the bottom of the suction groove (655) is connected to the conduit one (631). The lower part of the side opening of the suction groove (655) is provided with a baffle plate (656). The suction groove (655) inside the baffle plate (656) forms a glue collection cavity. The upper sides of the baffle plate (656) are provided with vertical scrapers (657). The scrapers (657) can scrape the outer edge of the hot melt mesh surface (13) when the suction head (65) rotates and moves in the circumferential direction. The rotating roller (653) is vertically set on the left and right sides of the suction arc block (651) on the horizontal, and is covered with a rubber sleeve (654) to block the left and right sides of the suction groove (655) on the horizontal. Rubber belts (652) are respectively installed on the upper and lower sides of the vertical direction of the suction arc block (651) to block the upper and lower sides of the vertical direction of the suction groove (655).

6. The ceramic steel paper grinding disc vacuum pressure curing molding equipment according to claim 5, characterized in that, The upper end of the baffle plate (656) is provided with an overflow slope (659) for introducing the overflowing adhesive from the outer edge of the hot melt mesh surface (13) into the adhesive collection cavity.

7. The ceramic steel paper grinding disc vacuum pressure curing molding equipment according to claim 5, characterized in that, The suction tank (655) is equipped with a liquid level sensor (658) at the top of the side bottom of the tank to monitor the liquid level in the collection chamber.

8. The ceramic steel paper grinding disc vacuum pressure curing molding equipment according to claim 5, characterized in that, The flow-blocking plate (64) includes: An elastic outer arc plate (641) is connected to an adjacent suction arc block (651); The elastic flow-blocking arc block (642) is installed on the inner side of the elastic outer arc plate (641) to block the outer edge area of ​​the hot melt mesh surface (13) between the suction heads (65).

9. The ceramic steel paper grinding disc vacuum pressure curing molding equipment according to claim 1, characterized in that, The placement seat (5) includes: The support block (51) is connected to the output end of the telescopic device (4); The airflow channel (52) is located inside the support block (51) and is evenly arranged in a circle. Its upper end is connected to the inner edge of the hot melt mesh surface (13), and its lower end passes through the lower end of the support block (51) and is connected to the cavity of the vacuum cylinder (2).

10. The ceramic steel paper grinding disc vacuum pressure curing molding equipment according to claim 1, characterized in that, The pressure head (11) includes: The pressure block (112) is connected to the output end of the expansion joint (9). The outer ring area of ​​its lower end is provided with a circular groove (113) evenly distributed around the circumference. The opening of the circular groove (113) is covered with a breathable disc (115). The upper end of the pressure block (112) is provided with a conduit (114) connected to the circular groove (113). The conduit (114) is also connected to the suction device (111) provided on the sealing cover (8). The conduit (114) located inside the sealing cover (8) is reserved with a matching pipe section to cooperate with the movement of the pressure block (112). The equalizing heat-conducting ring pad (116) is fixed on the outer ring surface area at the lower end of the pressure block (112) and is set in correspondence with the grinding ring (14). The area of ​​the equalizing heat-conducting ring pad (116) corresponding to the venting disc (115) is provided with vent holes (117).

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