A nanocrystalline glass pressing and molding machine for electronic optical cover plates

Abstract

This invention relates to the field of glass pressing equipment technology, specifically to a nanocrystalline glass pressing and forming machine for electronic optical cover plates. It includes a frame with a rotating shaft mounted on top, a circular frame mounted on top of the shaft, and a drive mechanism on the frame for driving the shaft's rotation. Four forming molds are arranged in an array around the shaft on the circular frame. Above the frame, around the shaft, are, in sequence, a feeding area, a pressing area, an annealing area, and a unloading area. A pre-pressing feeding mechanism is provided on the frame corresponding to the feeding area. This invention, through the pre-pressing feeding mechanism, can pre-press molten glass into a plate-shaped rolled body matching the internal dimensions of the mold cavity before feeding, ensuring that the glass volume matches the mold cavity's height and volume. This prevents overflow during pressing due to the material exceeding the mold cavity depth, effectively improving the quality of glass pressing. Furthermore, the pre-pressed rolled body already possesses a preliminary shape, allowing for rapid filling of the mold cavity during formal pressing, thus improving pressing efficiency.

Description

Technical Field

[0001] This invention relates to the field of glass pressing equipment technology, specifically to a nanocrystalline glass pressing and molding machine for electronic optical cover plates. Background Technology

[0002] Electron optical cover plates are key components used in the field of electron optics. They are usually made of high-transmittance, wear-resistant, and antistatic glass, quartz, or special optical materials. They have functions such as protecting optical components, maintaining optical path stability, and blocking dust, impurities, and electromagnetic interference. They are widely used in precision electron optical systems such as electron microscopes, intelligent display devices, semiconductor lithography equipment, and optical sensors. By precisely controlling light transmission and protecting devices, they ensure the optical performance and operational reliability of the equipment.

[0003] Existing nanocrystalline glass optical covers are typically thin plates, usually made from microcrystalline glass as raw material, which is melted and then pressed into shape. When the molten microcrystalline glass material is fed into the mold cavity, it often piles up in a mass, with a height much greater than the depth of the mold cavity. This causes most of the material to protrude outside the mold cavity. During mold pressing, the excess glass material easily overflows under pressure, affecting the quality of the pressed glass. Summary of the Invention

[0004] The purpose of this invention is to provide a nanocrystalline glass pressing and molding machine for electron optical cover plates, so as to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A nanocrystalline glass pressing and molding machine for electronic optical cover plates includes a frame with a rotating shaft mounted on top, a circular frame mounted on top of the rotating shaft, and a drive mechanism on the frame for driving the rotating shaft to rotate. Four molding molds are arranged in an array around the rotating shaft on the circular frame. The four sides of the frame above the rotating shaft are, in order, a feeding area, a pressing area, an annealing area, and a unloading area. A pre-pressing feeding mechanism is provided on the frame corresponding to the feeding area.

[0007] The pre-pressing feeding mechanism is used to pre-press the molten glass material and feed it into the mold cavity of the forming mold. A pressing mechanism is provided on the frame corresponding to the pressing area. During one rotation cycle of the circular frame, when the forming mold moves from the annealing area to the unloading area, it flips half a turn so that the mold cavity opening faces downward. When the forming mold moves from the unloading area to the feeding area, it flips half a turn to reset so that the mold cavity opening faces upward. A suction and unloading mechanism is provided on the side of the frame located in the unloading area to suck out the formed body in the mold cavity.

[0008] Preferably, the pre-pressing feeding mechanism includes a forming frame, a pressure plate, and a baffle. A bracket A is fixed on the frame platform. The forming frame is fixed to the side of the bracket A by a mounting plate. The forming frame is arranged vertically and is vertically connected. The pressure plate is slidably installed in the forming frame. The internal cross-sectional dimension of the forming frame is smaller than the internal cross-sectional dimension of the mold cavity. The baffle is slidably installed at the bottom port of the forming frame. A horizontally extending second hydraulic cylinder is fixed on the side of the forming frame.

[0009] The telescopic end of the second hydraulic cylinder is fixed to the baffle via an L-shaped arm. The first hydraulic cylinder is vertically fixed above the bracket A. The telescopic end of the first hydraulic cylinder extends into the forming frame and is fixed to the top of the pressure plate. The side of the forming frame and above the baffle has a feed port. A guide plate is installed obliquely on the side of the forming frame corresponding to the position of the feed port. The other end of the guide plate is connected to the discharge part of the melting furnace. When the first hydraulic cylinder retracts to its limit position, the feed port is located below the pressure plate.

[0010] Preferably, the circular frame consists of a central disc, a circular frame, and support arms. The central disc is fixed to the top of the rotating shaft. Four support arms, all extending radially along the central disc, are fixed in an array on the outer peripheral wall of the central disc. The circular frame is fixed to the ends of the support arms. Hollow sections are formed between the central disc and the circular frame and between two adjacent support arms. The forming mold is set in the hollow section.

[0011] Preferably, each hollow section has a rotating shaft installed inside, each forming mold is fixed on its corresponding shaft, each shaft has a worm gear fixed on it, four mounting arms are evenly distributed at the bottom of the central plate, each mounting arm has a worm gear rotatably installed on it, the worm gear meshes with its corresponding worm gear, each worm gear has a drive gear fixed at its bottom end, and an arc-shaped tooth segment is fixed on the frame by a fixing rod. The arc-shaped tooth segment is coaxially arranged with the rotating shaft and covers the annealing zone, the unloading zone and the feeding zone.

[0012] Preferably, the suction and unloading mechanism includes a power guide rail, a cylinder, and a rectangular cover. The power guide rail is mounted on a frame, the cylinder is vertically fixed to the top of the movable seat on the power guide rail, and the rectangular cover is fixed to the telescopic end of the cylinder with its opening facing upward. One side of the rectangular cover has a suction port, and a suction pipe is connected to the suction port. The end of the suction pipe is connected to a suction pump. When the cylinder extends to its limit position, the top of the rectangular cover can abut against and fit against the end face of the forming mold. At this time, the rectangular cover and the mold cavity cooperate to form a suction cavity. The internal cross-sectional dimension of the rectangular cover is larger than the internal cross-sectional dimension of the mold cavity.

[0013] Preferably, the bottom of the rectangular cover is provided with two through sliding holes symmetrically, and a support rod is slidably inserted into each of the two sliding holes. The bottom ends of the two support rods are fixed to the top of the movable seat. When the cylinder extends to the limit position, the top ends of the two support rods retract and are stored inside the rectangular cover. When the cylinder retracts to the limit position, the top ends of the two support rods extend above the rectangular cover.

[0014] Preferably, the pressing mechanism includes a third hydraulic cylinder and a pressing mold. A vertical frame is fixed on the stand, and a cantilever is fixed on the top of the vertical frame. The third hydraulic cylinder is fixed vertically on the cantilever, and the pressing mold is fixed on the telescopic end of the third hydraulic cylinder.

[0015] Preferably, a suspension plate is horizontally fixed to the side end of the pre-pressing feeding mechanism. The suspension plate extends above the annealing zone, and an annealing tube is installed on the suspension plate with its bottom end hanging downwards for annealing the pressed body.

[0016] Preferably, the drive mechanism includes a drive motor, a main gear, and a driven gear. The drive motor is fixed on the frame by a fixed base, the main gear is fixed on the output shaft of the drive motor, and the driven gear is fixedly mounted on the rotating shaft and meshes with the main gear.

[0017] Preferably, the suction tube is made of rubber tubing.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0019] The pre-pressing feeding mechanism can pre-press the molten glass material into a plate-shaped rolled body that matches the internal dimensions of the mold cavity before feeding. This ensures that the volume of the glass material matches the height of the mold cavity, preventing overflow due to the material exceeding the depth of the mold cavity during pressing, and effectively improving the quality of glass pressing.

[0020] In addition, the pre-formed calendered body already has a preliminary shape, which can quickly fill the mold cavity during formal pressing, thus improving the pressing efficiency.

[0021] Through the meshing transmission of shaft, worm gear, worm and drive gear with arc-shaped tooth segment, the molding die can be precisely controlled to rotate half a turn when it moves from the annealing zone to the unloading zone so that the mold cavity opening faces downward. In conjunction with the rectangular cover and the end face of the molding die, a suction cavity is formed. Through suction negative pressure, the molded body is quickly separated from the inner wall of the mold cavity under the combined action of gravity and negative pressure, realizing non-contact demolding, replacing the traditional ejector pin demolding method, and ensuring the integrity of the mold structure and the surface quality of the molded body.

[0022] By utilizing the unidirectional transmission of the worm gear and worm wheel, a self-locking effect is achieved, ensuring that the molding die maintains a stable state with the cavity opening facing upwards in the non-discharging position. In the discharging area, the meshing drive of the arc-shaped tooth segment achieves precise flipping, so that the negative pressure of the suction and unloading mechanism is triggered only at a specific station, forming a coordinated mechanism of directional swing and precise suction. This avoids material spillage caused by accidental flipping of the molding die and also ensures that the drive gear can accurately re-engage with the arc-shaped tooth segment after separating from it. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram showing the distribution of the four functional areas in this invention;

[0025] Figure 3 This is a schematic diagram of the structure above the platform in this invention;

[0026] Figure 4 for Figure 3 Cross-sectional structural diagram;

[0027] Figure 5 This is a schematic diagram of a partial structure above the platform;

[0028] Figure 6 for Figure 5 Another perspective view of the structure shown;

[0029] Figure 7 This is a schematic diagram of a partial structure below the circular frame;

[0030] Figure 8 This is a detailed structural diagram of the circular frame;

[0031] Figure 9 This is a schematic diagram of the pre-compression feeding mechanism in this invention;

[0032] Figure 10 This is a schematic diagram of the suction and unloading mechanism in this invention;

[0033] Figure 11 This is a schematic diagram showing the contact and fit between the molding die and the rectangular cover.

[0034] Figure 12 A schematic diagram showing the molded object falling into a rectangular enclosure;

[0035] Figure 13 A schematic diagram showing how the support rod pushes the molded body out of the rectangular cover.

[0036] In the diagram: 01. Feeding area; 02. Pressing area; 03. Annealing area; 04. Unloading area; 1. Stand; 11. Rotating shaft; 12. Circular frame; 121. Central plate; 122. Circular frame; 123. Support arm; 124. Hollowed-out section; 2. Drive mechanism; 21. Fixed base; 22. Drive motor; 23. Main gear; 24. Driven gear; 3. Molding mold; 31. Mold cavity; 4. Pre-pressing feeding mechanism; 41. Bracket A; 411. Mounting plate; 42. Molding frame; 421. Feed port; 43. Guide plate; 44. First hydraulic cylinder; 45. 46. ​​Pressure plate; 47. Baffle; 48. Second hydraulic cylinder; 5. L-shaped arm; 5. Pressing mechanism; 51. Vertical frame; 52. Cantilever; 53. Third hydraulic cylinder; 54. Pressing mold; 6. Suction and unloading mechanism; 61. Power guide rail; 611. Moving seat; 62. Cylinder; 63. Rectangular cover; 631. Sliding hole; 64. Suction port; 65. Suction pipe; 66. Support rod; 7. Suspension plate; 71. Annealing tube; 8. Shaft; 81. Worm gear; 82. Worm; 821. Mounting arm; 83. Drive gear; 84. Arc-shaped tooth segment; 841. Fixing rod. Detailed Implementation

[0037] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0038] Example 1

[0039] Please see Figures 1-13 This invention provides a nanocrystalline glass pressing and molding machine for electronic optical cover plates, comprising a frame 1 with a rotating shaft 11 rotatably mounted on top, a circular frame 12 mounted on top of the rotating shaft 11, and a drive mechanism 2 mounted on the frame 1. The drive mechanism 2 drives the rotating shaft 11 to rotate. Four molding dies 3 are arranged in an array around the rotating shaft 11 on the circular frame 12, each molding die 3 having a cavity 31 for molding glass material. For example... Figure 2 As shown, the four sides of the frame 1 surrounding the rotating shaft 11 are, in order, the feeding area 01, the pressing area 02, the annealing area 03 and the unloading area 04, and each area is arranged at equal intervals.

[0040] The drive mechanism 2 drives the rotating shaft 11 to rotate, which in turn drives the circular frame 12 and the forming mold 3 to rotate. During the rotation, each forming mold 3 passes through the feeding area 01, the pressing area 02, the annealing area 03, and the unloading area 04 in sequence. When the forming mold 3 moves to the feeding area 01, the molten glass material can be fed into the mold cavity 31 above it. When the forming mold 3 moves to the pressing area 02, the glass material in the mold cavity 31 can be pressed and shaped. When the forming mold 3 moves to the annealing area 03, the pressed glass body can be annealed. When the forming mold 3 moves to the unloading area 04, the pressed body can be taken out from the mold cavity 31 to achieve unloading. In this way, a circular rotating operation route is formed to ensure the continuity of the pressing operation process.

[0041] A pre-compression feeding mechanism 4 is provided on the platform 1 at the location corresponding to the feeding area 01, such as... Figure 9 As shown, the pre-compression feeding mechanism 4 includes a forming frame 42, a pressure plate 45 and a baffle 46. A bracket A41 is fixed on the frame 1. The forming frame 42 is fixed to the side of the bracket A41 by a mounting plate 411. The forming frame 42 is arranged vertically through the top and bottom.

[0042] The pressure plate 45 is installed inside the forming frame 42. A first hydraulic cylinder 44 is vertically fixed above the bracket A41. The telescopic end of the first hydraulic cylinder 44 extends into the forming frame 42 and is fixed to the top of the pressure plate 45. By telescopically working, the pressure plate 45 can be driven to move up and down inside the forming frame 42.

[0043] The baffle 46 is slidably installed at the bottom port of the forming frame 42. A horizontally extending second hydraulic cylinder 47 is fixed on the side of the forming frame 42. The telescopic end of the second hydraulic cylinder 47 is fixed to the baffle 46 through an L-shaped arm 48. By telescopically working, the second hydraulic cylinder 47 can drive the baffle 46 to move left and right under the connection of the L-shaped arm 48, thereby realizing the opening and closing adjustment.

[0044] The forming frame 42 has a feed inlet 421 on its side and above the baffle 46. A guide plate 43 is obliquely installed on the side of the forming frame 42 corresponding to the position of the feed inlet 421. The other end of the guide plate 43 is connected to the discharge part of the melting furnace (not shown in the figure). When the first hydraulic cylinder 44 retracts to the limit position, the feed inlet 421 is located below the pressure plate 45 to ensure that the molten glass material can fall from the feed inlet 421 into the space between the pressure plate 45 and the baffle 46.

[0045] During the specific feeding process, the first hydraulic cylinder 44 retracts, driving the pressure plate 45 to move above the feed inlet 421, and the second hydraulic cylinder 47 retracts, driving the baffle 46 to seal the bottom of the forming frame 42. The molten glass material in the melting furnace is fed from the discharge section into the guide plate 43 and slides into the forming frame 42 along the guide plate 43.

[0046] Subsequently, the first hydraulic cylinder 44 extends to push the baffle 46 downward, and cooperates with the baffle 46 to roll the molten glass material into a plate shape, and the size of the rolled body is consistent with the internal size of the forming frame 42.

[0047] Next, the second hydraulic cylinder 47 extends and drives the baffle 46 to slide open, removing the seal on the bottom of the forming frame 42. The calendered body inside the forming frame 42 falls vertically downward into the mold cavity 31 located in the feeding area 01, achieving pre-pressing before feeding.

[0048] The internal cross-sectional dimensions of the forming frame 42 are smaller than those of the mold cavity 31, ensuring that the calendered material can fall smoothly into the mold cavity 31.

[0049] Before the glass material is put into the mold cavity 31, the first hydraulic cylinder 44 pushes the pressure plate 45 down and cooperates with the baffle 46 to pre-calculate the glass material so that the glass material entering the mold cavity 31 matches the height of the mold cavity volume, avoiding overflow during pressing due to excessive glass material height. In addition, the pre-calculated body has a preliminary shape and can quickly fill the mold cavity 31 during formal pressing, and improves the pressing efficiency to a certain extent.

[0050] A pressing mechanism 5 is provided on the stand 1 at the location corresponding to the pressing area 02. As the round frame 12 continues to rotate, the forming mold 3 after being loaded rotates to the pressing area 02. The pressing mechanism 5 can be used to formally press and form the calendered body in the mold cavity 31.

[0051] Furthermore, during one rotation cycle of the circular frame 12, when the molding die 3 moves from the annealing zone 03 to the unloading zone 04, it flips half a turn so that the opening of the mold cavity 31 faces downward. When the molding die 3 moves from the unloading zone 04 to the feeding zone 01, it flips half a turn to reset so that the opening of the mold cavity 31 faces upward. A suction and unloading mechanism 6 is provided on the frame 1 on one side of the unloading zone 04 to suck out the molded body in the mold cavity 31.

[0052] When the forming mold 3 moves from the annealing zone 03 to the unloading zone 04 for unloading, the forming mold 3 rotates half a turn so that the mold cavity 31 faces downward. Through the negative pressure suction of the suction unloading mechanism 6 combined with the action of gravity, the material can be unloaded quickly, replacing the traditional method of setting an ejector rod at the bottom of the mold cavity 31 for unloading. There is no need to open a hole at the bottom of the mold cavity 31 for installing the ejector rod, thus ensuring the quality of glass pressing and forming.

[0053] When the forming mold 3 moves from the unloading area 04 to the feeding area 01, the forming mold 3 continues to rotate half a turn to achieve reset, ensuring that the opening of the mold cavity 31 faces upward and can cooperate with the pre-pressing feeding mechanism 4 to feed materials normally.

[0054] like Figures 5-9 The circular frame 12 consists of a central disk 121, a circular frame 122, and support arms 123. The central disk 121 is fixed to the top of the rotating shaft 11. Four support arms 123, which extend radially along the central disk 121, are fixed in an array on the outer peripheral wall of the central disk 121. The circular frame 122 is fixed to the end of the support arms 123. Hollow sections 124 are formed between the central disk 121 and the circular frame 122 and between two adjacent support arms 123, providing installation space for the arrangement of the molding molds 3. Each molding mold 3 is installed in the hollow section 124.

[0055] Please see Figure 6 and Figure 7Each hollow section 124 has a rotating shaft 8 installed inside it. Each forming mold 3 is fixed on the corresponding shaft 8. The shaft 8 provides the forming mold 3 with rotation capability. Each shaft 8 has a worm gear 81 fixed on it. Four mounting arms 821 are evenly distributed at the bottom of the central disk 121. Each mounting arm 821 has a worm gear 82 rotatably installed on it. The worm gear 82 meshes with the corresponding worm gear 81. Each worm gear 82 has a drive gear 83 fixed at its bottom end. An arc-shaped tooth segment 84 is fixed on the frame 1 by a fixing rod 841. The arc-shaped tooth segment 84 is arranged coaxially with the rotating shaft 11 and covers the annealing zone 03, the unloading zone 04 and the feeding zone 01.

[0056] During the rotation of the circular frame 12, when the forming mold 3 moves from the annealing zone 03 to the unloading zone 04, the drive gear 83 engages with the arc-shaped tooth segment 84. The arc-shaped tooth segment 84 engages and drives the drive gear 83, which in turn drives the worm 82 to rotate. The rotating worm 82 engages and drives the worm wheel 81, which in turn drives the shaft 8 and the forming mold 3 to rotate. Figure 4 As shown, when the molding die 3 moves to the unloading area 04, the molding die 3 rotates half a turn so that the mold cavity 31 is facing downwards. When the molding die 3 moves from the unloading area 04 to the feeding area 01, similarly, the transmission drive shaft 8 and the molding die 3 continue to rotate half a turn using the worm gear 81, worm 82, drive gear 83 and arc-shaped tooth segment 84. At this time, the mold cavity 31 returns to its upward orientation.

[0057] The worm gear 82 and worm wheel 81 utilize unidirectional transmission to achieve a self-locking effect, preventing the forming mold 3 from flipping arbitrarily when the drive gear 83 and the arc-shaped tooth segment 84 are separated. This prevents the forming mold 3 from accidentally flipping due to gravity or external force in non-unloading stations. In addition, it also ensures that the drive gear 83 can smoothly mesh with the arc-shaped tooth segment 84 again after being separated from it.

[0058] Example 2

[0059] Please see Figure 3 and Figure 10 The difference between this embodiment and Embodiment 1 is that:

[0060] The suction and unloading mechanism 6 includes a power guide rail 61, a cylinder 62, and a rectangular cover 63. The power guide rail 61 is mounted on the frame 1. The cylinder 62 is vertically fixed to the top of the movable seat 611 on the power guide rail 61. The rectangular cover 63 is fixed to the telescopic end of the cylinder 62 and the opening is arranged upward. One side of the rectangular cover 63 has a suction port 64. A suction pipe 65 is connected to the suction port 64. The end of the suction pipe 65 is connected to a suction pump (not shown in the figure). When the cylinder 62 is extended to the limit position, the top of the rectangular cover 63 can abut against and fit against the end face of the molding mold 3. At this time, the rectangular cover 63 and the mold cavity 31 cooperate to form a suction cavity.

[0061] When the molding die 3 moves to the unloading area 04, the opening of the mold cavity 31 on it faces downward. At this time, the pressed molding body fits tightly with the inner wall of the mold cavity 31. Through the operation of the power guide rail 61, the moving seat 611 on it drives the cylinder 62 and the rectangular cover 63 to move to the unloading area 04 until the rectangular cover 63 moves to the bottom of the molding die 3.

[0062] Subsequently, as Figure 11 As shown, when the cylinder 62 extends to its limit position, it pushes the top of the rectangular cover 63 to abut against the molding die 3, forming a temporary suction cavity between the rectangular cover 63 and the mold cavity 31.

[0063] Next, by operating the air pump, the air in the suction chamber is rapidly extracted sequentially through the suction port 64 and the suction pipe 65, creating a negative pressure in the suction chamber instantaneously. Under this negative pressure, the pressed body is peeled off the inner wall of the mold cavity 31. Combined with gravity, as... Figure 12 As shown, the pressed body finally falls into the rectangular cover 63, realizing the unloading of the pressed body.

[0064] The internal cross-sectional dimensions of the rectangular cover 63 are larger than those of the mold cavity 31, ensuring that the pressed body can fall smoothly into the rectangular cover 63.

[0065] Example 3

[0066] Please see Figure 10 The difference between this embodiment and Embodiment 2 is that:

[0067] The bottom of the rectangular cover 63 is symmetrically provided with two through sliding holes 631. A support rod 66 is slidably inserted into each of the two sliding holes 631. The bottom ends of the two support rods 66 are fixed to the top of the movable seat 611.

[0068] like Figure 11 As shown, when cylinder 62 extends to its limit position, the tops of both support rods 66 retract and are housed within rectangular cover 63, freeing up internal space within rectangular cover 63 to ensure the pressing body can smoothly enter rectangular cover 63, as... Figure 12 As shown, after the pressed body falls into the rectangular cover 63, it can be supported on the top of the two support rods 66.

[0069] After unloading is complete, cylinder 62 retracts to its limit position, such as... Figure 13 As shown, the tops of both support rods 66 extend above the rectangular cover 63, thereby pushing the pressed body above the rectangular cover 63. Subsequently, the moving seat 611 is driven to reset and move through the power guide rail 61, which drives the rectangular cover 63 to move and reset to the periphery. Then, the mechanical arm (not shown in the figure) mounted on the frame 1 transfers the pressed body to the downstream process for subsequent processing.

[0070] The mechanism of cylinder 62 retracting to push the pressing body out of rectangular cover 63 by support rod 66 exposes the edge of the pressing body, preventing the pressing body from being blocked by the side wall of rectangular cover 63 and thus preventing the robotic arm from successfully grasping and transferring it. In addition, the power guide rail 61 drives the moving seat 611 to move, causing the rectangular cover 63 to return to the periphery, which can prevent the circular frame 12 and forming mold 3 from blocking the top of the rectangular cover 63 and interfering with the operation of the robotic arm.

[0071] In addition, the suction tube 65 is made of rubber tubing, which has the ability to bend and deform to adapt to changes in the position of the rectangular cover 63.

[0072] Example 4

[0073] Please see Figure 3 and Figure 5 The difference between this embodiment and Embodiment 3 is as follows:

[0074] The pressing mechanism 5 includes a third hydraulic cylinder 53 and a pressing mold 54. A vertical frame 51 is fixed on the stand 1, and a cantilever 52 is fixed on the top of the vertical frame 51. The third hydraulic cylinder 53 is fixed vertically on the cantilever 52. The pressing mold 54 is fixed on the telescopic end of the third hydraulic cylinder 53. By extending the third hydraulic cylinder 53, the pressing mold 54 can be pushed into the mold cavity 31 located in the pressing area 02 to press and shape the pre-calendered body in the mold cavity 31.

[0075] The pre-pressing feeding mechanism 4 has a horizontally fixed suspension plate 7 on its side end. The suspension plate 7 extends above the annealing zone 03. An annealing tube 71 is installed on the suspension plate 7. The bottom end of the annealing tube 71 hangs downward. When the forming mold 3 rotates to the annealing zone 03, the pressed body in the mold cavity 31 can be annealed through the annealing tube 71. The specific structure and working principle of the annealing tube 71 and its accessories adopt the existing technology and will not be described in detail.

[0076] The drive mechanism 2 includes a drive motor 22, a main gear 23, and a driven gear 24. The drive motor 22 is fixed on the frame 1 by a fixed base 21. The main gear 23 is fixed on the output shaft of the drive motor 22. The driven gear 24 is fixedly mounted on the rotating shaft 11 and meshes with the main gear 23. When the drive motor 22 works, its output shaft drives the main gear 23 to rotate. The rotating main gear 23 meshes with and drives the driven gear 24, which in turn rotates the rotating shaft 11, thus providing drive for the entire rotary operation.

[0077] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0078] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A nanocrystalline glass pressing and molding machine for electronic optical cover plates, comprising a frame on which a rotating shaft is rotatably mounted, a circular frame mounted on top of the rotating shaft, and a drive mechanism disposed on the frame, characterized in that: Four forming molds are arranged in an array around the rotating shaft on the circular frame; Above the frame, around the rotating shaft, are the feeding area, pressing area, annealing area, and unloading area, respectively. A pre-pressing feeding mechanism is provided on the platform corresponding to the feeding area. The pre-pressing feeding mechanism is used to pre-press the molten glass material and then feed it into the mold cavity of the forming mold. A pressing mechanism is installed on the platform corresponding to the pressing area; During one rotation cycle of the round frame, when the forming mold moves from the annealing zone to the unloading zone, it flips half a turn so that the mold cavity opening faces downward. When the forming mold moves from the unloading zone to the feeding zone, it flips half a turn to reset so that the mold cavity opening faces upward. A suction and unloading mechanism is provided on one side of the unloading area on the support platform to extract the molded body from the mold cavity; The circular frame consists of a central disc, a circular frame, and support arms; Hollow sections are formed between the central disc and the circular frame, and between two adjacent support arms; Each hollow section is rotatably mounted with a shaft, and each forming mold is fixed on its corresponding shaft. Each shaft is fixed with a worm gear, and four mounting arms are evenly distributed on the bottom of the central disk. A worm is rotatably mounted on each mounting arm, and the worm meshes with the corresponding worm gear. Each worm gear has a drive gear fixed at its bottom end; An arc-shaped toothed segment is fixed on the platform by a fixing rod. The arc-shaped toothed segment is arranged coaxially with the rotating shaft and covers the annealing area, the unloading area and the feeding area.

2. The nanocrystalline glass pressing and molding machine for electron optical cover plates according to claim 1, characterized in that: The pre-compression feeding mechanism includes a forming frame, a pressure plate, and a baffle. A bracket A is fixed on the stand, and the forming frame is fixed to the side of the bracket A by a mounting plate; The forming frame is arranged vertically and runs through the top and bottom. The pressure plate is installed in the forming frame in a sliding matching manner. The internal cross-sectional dimensions of the forming frame are smaller than the internal cross-sectional dimensions of the mold cavity. The baffle is slidably installed at the bottom port of the forming frame. A horizontally extending second hydraulic cylinder is fixed on the side of the forming frame. The telescopic end of the second hydraulic cylinder is fixed to the baffle via an L-shaped arm. A first hydraulic cylinder is vertically fixed above bracket A. The telescopic end of the first hydraulic cylinder extends into the forming frame and is fixed to the top of the pressure plate. The molding frame has a feed inlet on its side and above the baffle. A guide plate is installed at an angle on the side of the molding frame corresponding to the feed inlet. The other end of the guide plate is connected to the discharge part of the melting furnace. Specifically, when the first hydraulic cylinder retracts to its limit position, the feed port is located below the pressure plate.

3. The nanocrystalline glass pressing and molding machine for electron optical cover plates according to claim 1, characterized in that: The central disk is fixed to the top of the rotating shaft, and four support arms, which extend radially along the central disk, are fixed in an array on the outer peripheral wall of the central disk. A circular frame is fixed to the end of the support arms. The forming mold is set inside the hollow section.

4. The nanocrystalline glass pressing and molding machine for electron optical cover plates according to claim 1, characterized in that: The suction and unloading mechanism includes a power guide rail, a cylinder, and a rectangular cover; The power guide rail is mounted on the frame, and the cylinder is vertically fixed to the top of the movable seat on the power guide rail; The rectangular cover is fixed to the telescopic end of the cylinder, with the opening facing upwards; The rectangular cover has a suction port on one side, and a suction tube is connected to the suction port. The end of the suction tube is connected to a vacuum pump. When the cylinder extends to its limit position, the top of the rectangular cover can come into contact with the end face of the forming mold. At this time, the rectangular cover and the mold cavity cooperate to form a suction cavity. The internal cross-sectional dimensions of the rectangular cover are larger than the internal cross-sectional dimensions of the mold cavity.

5. The nanocrystalline glass pressing and molding machine for electron optical cover plates according to claim 4, characterized in that: The bottom of the rectangular cover has two through-holes symmetrically arranged, and a support rod is slidably inserted into each of the two holes; The bottom ends of both support rods are fixed to the top of the movable base; When the cylinder extends to its limit position, the tops of both support rods retract and are stored inside the rectangular cover. When the cylinder retracts to its limit position, the tops of both support rods extend above the rectangular cover.

6. The nanocrystalline glass pressing and molding machine for electron optical cover plates according to claim 1, characterized in that: The pressing mechanism includes a third hydraulic cylinder and a pressure mold; A vertical frame is fixed on the platform, and a cantilever is fixed at the top of the frame; The third hydraulic cylinder is vertically fixed on the cantilever; The pressure mold is fixed on the telescopic end of the third hydraulic cylinder.

7. The nanocrystalline glass pressing and molding machine for electron optical cover plates according to claim 2, characterized in that: A suspension plate is horizontally fixed to the side of the pre-compression feeding mechanism, and the suspension plate extends above the annealing zone. An annealing tube is installed on the suspension plate, with its bottom end hanging downwards, for annealing the pressed body.

8. The nanocrystalline glass pressing and molding machine for electron optical cover plates according to claim 1, characterized in that: The drive mechanism includes a drive motor, a main gear, and a driven gear; The drive motor is fixed to the frame by a mounting bracket; The main gear is fixed on the output shaft of the drive motor; The driven gear is fixedly mounted on the rotating shaft and meshes with the main gear.

9. The nanocrystalline glass pressing and molding machine for electron optical cover plates according to claim 4, characterized in that: The suction tube is made of rubber tubing.

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