Nanometer glass ceramic pressing forming machine for electron optical cover plate

Abstract

The invention relates to the technical field of glass pressing equipment, in particular to a nanocrystalline glass pressing forming machine for an electronic optical cover plate, which comprises a stand, a round frame and a driving mechanism, four forming dies are arranged on the round frame around the rotating shaft in an array mode, a feeding area, a pressing area, an annealing area and a discharging area are sequentially arranged on the four sides, around the rotating shaft, above the stand, and a pre-pressing feeding mechanism is arranged at the position, corresponding to the feeding area, of the stand. According to the invention, the lump-shaped molten frit can be pre-pressed into a plate-shaped calendered body matched with the internal size of the mold cavity through the pre-pressing feeding mechanism before feeding, so that the volume of the frit is highly matched with the volume of the mold cavity, the situation that the frit overflows due to the fact that the height of the piled frit exceeds the depth of the mold cavity during pressing is avoided, and the glass pressing forming quality is effectively improved; and the pre-pressed and molded calendered body has a preliminary shape, and can be quickly filled into a mold cavity for molding during formal pressing, so that the pressing and molding efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of glass pressing equipment, and specifically relates to a nano-crystalline glass pressing and forming machine for an electro-optical cover plate. Background Art

[0002] The electro-optical cover plate is a key component applied in the electro-optical field. It is usually made of glass, quartz or special optical materials with high light transmittance, wear resistance and antistatic properties. It has functions such as protecting optical components, maintaining the stability of the optical path, blocking dust, impurities and electromagnetic interference, etc. It is widely used in precision electro-optical systems such as electron microscopes, intelligent display devices, semiconductor lithography equipment, optical sensors, etc. By precisely controlling the light transmission and device protection, the optical performance and working reliability of the equipment are guaranteed.

[0003] The existing nano-crystalline glass optical cover plates usually present as thin plate-shaped bodies. Usually, microcrystalline glass is used as the raw material, and after melting, it is pressed and formed. When feeding the molten microcrystalline glass material into the mold cavity, since the microcrystalline glass material discharged from the furnace outlet is usually in a piled-up shape, and its pile height is much greater than the depth of the mold cavity, most of it will extend outside the mold cavity when it is put into the mold cavity. When the mold is closed for pressing, the glass material exceeding the mold cavity is extremely easy to overflow the mold cavity under the action of pressure, thereby affecting the quality of glass pressing and forming. Summary of the Invention

[0004] The purpose of the present invention is to provide a nano-crystalline glass pressing and forming machine for an electro-optical cover plate to solve the technical problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions.

[0006] A nano-crystalline glass pressing and forming machine for an electro-optical cover plate includes a frame with a rotating shaft rotatably installed above, a circular frame installed at the top of the rotating shaft, and a driving mechanism provided on the frame for driving the rotating shaft to rotate. Four forming molds are arranged around the rotating shaft in an array on the circular frame. The four sides around the rotating shaft above the frame are in turn a feeding area, a pressing area, an annealing area and a blanking 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 and feed the molten glass material into the mold cavity of the forming mold. A pressing mechanism is provided on the frame corresponding to the pressing area. In one rotation cycle of the circular frame, when the forming mold moves from the annealing area to the blanking area, it flips half a turn to make the mold cavity open downward, and when the forming mold moves from the blanking area to the feeding area, it flips half a turn to reset to the state where the mold cavity opens upward. A suction and demolding mechanism is provided on one side of the blanking area on the frame for sucking out the formed body in the mold cavity.

[0008] Preferably, the pre-press feeding mechanism includes a forming frame, a pressing plate, and a baffle. A support A is fixed on the frame table. The forming frame is fixed to the side of the support A through a mounting plate. The forming frame is vertically arranged and penetrates up and down. The pressing plate is slidably and vertically installed in the forming frame. The internal cross-sectional dimension of the forming frame is smaller than that 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 to the side of the forming frame;

[0009] The telescopic end of the second hydraulic cylinder is fixed to the baffle through an L-shaped arm. A first hydraulic cylinder is vertically fixed above the support A. The telescopic end of the first hydraulic cylinder extends into the forming frame and is fixed to the top of the pressing plate. There is a feed port at the side of the forming frame and above the baffle. A guide plate is inclinedly installed at the position corresponding to the feed port on the side of the forming frame. The other end of the guide plate is connected to the discharge part of the melting furnace. Among them, when the first hydraulic cylinder retracts to the limit position, the feed port is located below the pressing plate.

[0010] Preferably, the circular frame is composed 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 that all extend radially along the central disc are arrayed and fixed on the outer peripheral wall of the central disc. The circular frame is fixed to the ends of the support arms. Hollow parts are respectively formed between the central disc and the circular frame and between adjacent support arms. The forming die is arranged in the hollow part.

[0011] Preferably, a shaft rod is rotatably installed in each hollow part. Each forming die is respectively fixed on the corresponding shaft rod. A worm gear is fixed on each shaft rod. Four installation arms are evenly distributed at the bottom of the central disc. A worm is rotatably installed on each installation arm. The worms are respectively engaged with the corresponding worm gears. A driving gear is fixed to the bottom end of each worm. An arc-shaped tooth section is fixed to the frame table through a fixing rod. The arc-shaped tooth section is coaxially arranged with the rotating shaft, and the covered path is the annealing area, the blanking area to the feeding area.

[0012] Preferably, the suction and demolding mechanism includes a power guide rail, a cylinder, and a rectangular cover. The power guide rail is installed on the frame table. The cylinder is vertically fixed to the top of the moving seat on the power guide rail. The rectangular cover is fixed to the telescopic end of the cylinder and is arranged with the opening facing upward. There is a suction port on one side of the rectangular cover. A suction pipe is connected to the suction port. The end of the suction pipe is connected to an air extraction pump. When the cylinder extends to the limit position, the top end of the rectangular cover can be in contact and fit with the end face of the forming die. 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 that of the mold cavity.

[0013] Preferably, two through sliding holes are symmetrically arranged at the bottom of the rectangular cover. Support rods are slidably inserted into the two sliding holes. The bottom ends of the two support rods are fixed to the top of the moving seat. Among them, when the cylinder extends to the limit position, the top ends of the two support rods are both retracted and stored in the rectangular cover. When the cylinder retracts to the limit position, the top ends of the two support rods both extend above the rectangular cover.

[0014] Preferably, the pressing mechanism includes a third hydraulic cylinder and a pressure die, a vertical frame is vertically fixed on the platform, a cantilever is fixed on the top of the vertical frame, the third hydraulic cylinder is vertically fixed on the cantilever, and the pressure die is fixed on the telescopic end of the third hydraulic cylinder.

[0015] Preferably, a hanging plate is horizontally fixed to the side end of the pre-pressing feeding mechanism, and the hanging plate extends above the annealing zone. An annealing tube is installed on the hanging plate, and the bottom end of the annealing tube hangs downward for annealing the pressed body after pressing.

[0016] Preferably, the driving mechanism includes a driving motor, a main gear and a driven gear. The driving motor is fixed on the frame through a fixing seat, the main gear is fixed on the output shaft of the driving motor, and the driven gear is fixedly sleeved on the rotating shaft and meshes with the main gear.

[0017] Preferably, the suction pipe is a rubber hose.

[0018] Compared with the prior art, the present invention has the following beneficial effects.

[0019] The pre-pressing and feeding mechanism can pre-press the lump-shaped molten glass material into a plate-shaped rolled body that matches the internal dimensions of the mold cavity before feeding, so that the volume of the glass material is highly adapted to the volume of the mold cavity, avoiding overflow due to the material body exceeding the depth of the mold cavity during pressing, and effectively improving the quality of glass pressing and molding;

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

[0021] Through the meshing transmission of the shaft, worm wheel, worm and driving gear with the arc-shaped tooth segment, the forming mold can be accurately controlled to flip half a circle when moving from the annealing area to the unloading area so that the mold cavity opening faces downward. The rectangular cover and the end face of the forming mold contact to form a suction cavity. Through the suction negative pressure, the molded body is quickly separated from the inner wall of the mold cavity under the coordinated action of gravity and negative pressure, realizing non-contact demoulding, replacing the traditional ejector demoulding method, and ensuring the structural integrity of the mold and the surface quality of the molded body.

[0022] The one-way transmission of the worm and worm gear achieves a self-locking effect, ensuring that the forming mold maintains a stable state with the mold cavity opening facing upward in the non-unloading position. In the unloading area, precise flipping is achieved through the meshing drive of the arc-shaped tooth segments, so that the negative pressure effect of the suction and unloading mechanism is triggered only at a specific workstation, forming a coordinated mechanism of directional swing and precise suction, avoiding material spillage caused by accidental flipping of the forming mold, and ensuring that the drive gear can be accurately positioned and meshed with the arc-shaped tooth segment again after separation from the arc-shaped tooth segment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 2 Schematic diagram of the distribution of four functional areas in the present invention;

[0025] Figure 3 Schematic diagram of the structure above the rack in the present invention;

[0026] Figure 4 is Figure 3 Schematic diagram of the sectional structure;

[0027] Figure 5 Schematic diagram of the partial structure above the rack;

[0028] Figure 6 is Figure 5 Schematic diagram of another perspective of the structure shown;

[0029] Figure 7 Schematic diagram of the partial structure below the circular rack;

[0030] Figure 8 Schematic diagram of the detailed structure of the circular rack;

[0031] Figure 9 Schematic diagram of the structure of the preloading and feeding mechanism in the present invention;

[0032] Figure 10 Schematic diagram of the structure of the suction and discharging mechanism in the present invention;

[0033] Figure 11 Schematic diagram of the abutting and mating of the forming die and the rectangular cover;

[0034] Figure 12 Schematic diagram of the formed body falling into the rectangular cover;

[0035] Figure 13 Schematic diagram of the support rod pushing the formed body out of the rectangular cover.

[0036] In the figure: 01, feeding area; 02, pressing area; 03, annealing area; 04, blanking area; 1, platform; 11, rotating shaft; 12, circular frame; 121, central disk; 122, circular frame; 123, support arm; 124, hollow part; 2, driving mechanism; 21, fixed seat; 22, driving motor; 23, main gear; 24, driven gear; 3, forming die; 31, die cavity; 4, pre-pressing feeding mechanism; 41, support A; 411, mounting plate; 42, forming frame; 421, feeding port; 43, guide plate; 44, first hydraulic cylinder; 45, pressing plate; 46, baffle; 47, second hydraulic cylinder; 48, L-shaped arm; 5, pressing mechanism; 51, vertical frame; 52, cantilever; 53, third hydraulic cylinder; 54, pressing die; 6, suction and blanking 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, hanging plate; 71, annealing pipe; 8, shaft rod; 81, worm gear; 82, worm; 821, mounting arm; 83, driving gear; 84, arc tooth section; 841, fixed rod. Detailed implementation mode

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

[0038] Embodiment 1

[0039] Please refer to Figures 1 - 13 , the present invention provides a nano-crystalline glass press for an electro-optical cover plate, including a platform 1 rotatably installed above with a rotating shaft 11, a circular frame 12 installed at the top of the rotating shaft 11, and a driving mechanism 2 provided on the platform 1. The driving mechanism 2 is used to drive the rotating shaft 11 to rotate. Four forming dies 3 are arranged in an array around the rotating shaft 11 on the circular frame 12. Each forming die 3 has a die cavity 31 for forming glass materials. Among them, as Figure 2 shown, the four sides around the rotating shaft 11 above the platform 1 are successively a feeding area 01, a pressing area 02, an annealing area 03, and a blanking area 04, and the areas are arranged at equal distances;

[0040] By the operation of the driving mechanism 2 to drive the rotating shaft 11 to rotate, driving the circular frame 12 and the forming die 3 to rotate. During the rotation, each forming die 3 successively passes through the feeding area 01, the pressing area 02, the annealing area 03, and the blanking area 04. When the forming die 3 moves to the feeding area 01, the molten glass material can be put into the die cavity 31 thereon. When the forming die 3 moves to the pressing area 02, the glass material in the die cavity 31 can be pressed and formed. When the forming die 3 moves to the annealing area 03, the glass pressing body formed by pressing can be annealed. When the forming die 3 moves to the blanking area 04, the pressing body can be taken out of the die cavity 31 to realize blanking. In this way, a circular rotating operation route is formed to ensure the continuity of the pressing operation process.

[0041] At the position corresponding to the feeding area 01 on the frame 1, a pre-pressing feeding mechanism 4 is provided. As Figure 9 shown, the pre-pressing feeding mechanism 4 includes a forming frame 42, a pressing plate 45 and a baffle 46. A support A41 is fixed on the frame 1. The forming frame 42 is fixed to the side of the support A41 through a mounting plate 411. The forming frame 42 is vertically arranged in a through-up and down manner;

[0042] The pressing plate 45 is fitted and installed in the forming frame 42. A first hydraulic cylinder 44 is vertically fixed above the support A41. The telescopic end of the first hydraulic cylinder 44 extends into the forming frame 42 and is fixed to the top of the pressing plate 45. By the telescopic operation of the first hydraulic cylinder 44, the pressing plate 45 can be driven to move up and down in 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 to 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 the telescopic operation of the second hydraulic cylinder 47, under the connection action of the L-shaped arm 48, the baffle 46 can be driven to move left and right to realize the opening and closing adjustment;

[0044] At the side of the forming frame 42 and above the baffle 46, there is a feeding port 421. A guide plate 43 is inclinedly installed at the position corresponding to the feeding port 421 on the side of the forming frame 42. The other end of the guide plate 43 is connected to the discharging part of the melting furnace (not shown in the figure). Among them, when the first hydraulic cylinder 44 retracts to the limit position, the feeding port 421 is located below the pressing plate 45 to ensure that the molten glass material can fall from the feeding port 421 between the pressing plate 45 and the baffle 46.

[0045] During the specific feeding process, first, the first hydraulic cylinder 44 retracts, driving the pressing plate 45 to move above the feeding port 421, and the second hydraulic cylinder 47 retracts, driving the baffle 46 to block the bottom end of the forming frame 42. The molten glass material in the melting furnace is discharged from the discharging part 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 the same as the internal size of the forming frame 42;

[0047] Then, by the extension of the second hydraulic cylinder 47, the baffle 46 is driven to slide open, canceling the blockage of the bottom of the forming frame 42. The rolled body in the forming frame 42 falls vertically downward into the mold cavity 31 at the feeding area 01, realizing feeding after pre-pressing.

[0048] Among them, the internal cross-sectional dimension of the forming frame 42 is smaller than that of the mold cavity 31 to ensure that the rolled body can smoothly fall into the mold cavity 31.

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

[0050] A pressing mechanism 5 is provided on the frame 1 corresponding to the pressing area 02. As the circular frame 12 continues to rotate, the formed mold 3 after feeding moves to the pressing area 02, and the pressing mechanism 5 can be used to perform formal pressing and forming processing on the rolled body in the mold cavity 31.

[0051] In addition, in one rotation cycle of the circular frame 12, when the formed mold 3 moves from the annealing area 03 to the blanking area 04, it flips half a turn to make the mold cavity 31 face down. When the formed mold 3 moves from the blanking area 04 to the feeding area 01, it flips half a turn to reset to the state where the mold cavity 31 faces up. A suction and demolding mechanism 6 is provided on the frame 1 on one side of the blanking area 04 for sucking out the formed body in the mold cavity 31.

[0052] When demolding is performed when the formed mold 3 moves from the annealing area 03 to the blanking area 04, the formed mold 3 flips half a turn to make the mold cavity 31 face down. Through the negative pressure suction of the suction and demolding mechanism 6 and the action of gravity, rapid blanking can be carried out, replacing the traditional method of setting ejector rods at the bottom of the mold cavity 31 for demolding, without the need to open holes for installing ejector rods at the bottom of the mold cavity 31, ensuring the quality of glass pressing and forming.

[0053] When the formed mold 3 moves from the blanking area 04 to the feeding area 01, the formed mold 3 continues to flip half a turn to achieve reset, ensuring that the mold cavity 31 faces up and can cooperate with the pre-pressing and feeding mechanism 4 for normal feeding.

[0054] Such as Figures 5 - 9 , the circular frame 12 is composed of a central disk 121, a circular frame 122 and support arms 123. The central disk 121 is fixed on the top of the rotating shaft 11. Four support arms 123 that all extend radially along the central disk 121 are fixedly arranged on the outer peripheral wall of the central disk 121 in an array. The circular frame 122 is fixed at the ends of the support arms 123. Hollow parts 124 are respectively formed between the central disk 121 and the circular frame 122 and between adjacent support arms 123, providing an installation space for the arrangement of the formed molds 3, and each formed mold 3 is correspondingly installed in the hollow part 124.

[0055] Please refer to Figure 6 and Figure 7, a shaft rod 8 is rotatably installed in each hollow portion 124, and each forming die 3 is respectively fixed on the corresponding shaft rod 8. The shaft rod 8 provides the forming die 3 with the ability to rotate. A worm gear 81 is fixed on each shaft rod 8. Four mounting arms 821 are evenly distributed at the bottom of the central disk 121. A worm 82 is rotatably installed on each mounting arm 821. The worms 82 are respectively meshed with the corresponding worm gears 81. A driving gear 83 is fixed on the bottom end of each worm 82. An arc-shaped tooth section 84 is fixed on the frame 1 through a fixing rod 841. The arc-shaped tooth section 84 is coaxially arranged with the rotating shaft 11, and the covering path is the annealing area 03, the blanking area 04 to the feeding area 01.

[0056] During the rotation of the circular frame 12, when the forming die 3 moves from the annealing area 03 to the blanking area 04, the driving gear 83 contacts and meshes with the arc-shaped tooth section 84. The arc-shaped tooth section 84 meshes and drives the driving gear 83 and drives the worm 82 to rotate. The rotating worm 82 meshes and drives the worm gear 81 and drives the shaft rod 8 and the forming die 3 to rotate. As Figure 4 shown, when the forming die 3 moves to the blanking area 04, the forming die 3 rotates half a turn to make the cavity 31 face downward. When the forming die 3 moves from the blanking area 04 to the feeding area 01, similarly, the shaft rod 8 and the forming die 3 are driven to continue rotating half a turn by the transmission of the worm gear 81, the worm 82, the driving gear 83 and the arc-shaped tooth section 84. At this time, the cavity 31 returns upward.

[0057] Among them, the one-way transmission effect of the worm 82 and the worm gear 81 is utilized to achieve the self-locking effect, avoid the random flipping of the forming die 3 when the driving gear 83 and the arc-shaped tooth section 84 are separated, and further prevent the forming die 3 from accidentally flipping due to gravity or external force at non-blanking workstations. In addition, it also ensures that the driving gear 83 can mesh with the arc-shaped tooth section 84 smoothly again after being separated from the arc-shaped tooth section 84.

[0058] Embodiment 2

[0059] Please refer to Figure 3 and Figure 10 , the difference between this embodiment and Embodiment 1 is that:

[0060] The suction and blanking mechanism 6 includes a power guide rail 61, a cylinder 62 and a rectangular cover 63. The power guide rail 61 is installed on the frame 1. The cylinder 62 is vertically fixed on the top of the moving seat 611 on the power guide rail 61. The rectangular cover 63 is fixed on the telescopic end of the cylinder 62 and is arranged with the opening facing upward. One side of the rectangular cover 63 has a suction port 64. A suction pipe 65 is communicated with the suction port 64. The end of the suction pipe 65 is communicated with a suction pump (not shown in the figure). When the cylinder 62 extends to the limit position, the top end of the rectangular cover 63 can be in contact and fit with the end face of the forming die 3. At this time, the rectangular cover 63 and the cavity 31 cooperate to form a suction cavity.

[0061] When the forming mold 3 moves to the unloading area 04, the mold cavity 31 on it opens downward. At this time, the pressed body is tightly attached to the inner wall of the mold cavity 31. The moving seat 611 on the power guide rail 61 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 forming mold 3.

[0062] Then, if Figure 11 As shown, when the cylinder 62 is extended to its limit position, it pushes the top of the rectangular cover 63 to contact and fit with the forming mold 3, forming a temporary suction cavity between the rectangular cover 63 and the inside of the mold cavity 31;

[0063] Then, the air in the suction chamber is quickly extracted through the suction port 64 and the suction pipe 65 by the vacuum pump, so that the suction chamber instantly forms a negative pressure. Under the action of the negative pressure, the pressed body is peeled off the inner wall of the mold cavity 31, and combined with the action of gravity, as shown in FIG. Figure 12 As shown, the final pressed body falls into the rectangular cover 63, achieving the removal of the pressed body.

[0064] The inner cross-sectional dimension of the rectangular cover 63 is larger than the inner cross-sectional dimension of the mold cavity 31 , thereby ensuring that the pressed body can smoothly fall into the rectangular cover 63 .

[0065] Example 3

[0066] See also 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, and the two sliding holes 631 are slidably inserted with support rods 66, and 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 the cylinder 62 is extended to the limit position, the top ends of the two support rods 66 are retracted and stored in the rectangular cover 63, leaving the internal space of the rectangular cover 63 to ensure that the pressing body can smoothly enter the rectangular cover 63, as shown in FIG. 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 the stripping is completed, the cylinder 62 is retracted to the limit position. Figure 13 As shown, the top ends of the two support rods 66 extend to the top of the rectangular cover 63, thereby pushing the pressed body out to the top of the rectangular cover 63. Subsequently, the movable seat 611 is driven to reset and move by the power guide rail 61, driving the rectangular cover 63 to move and reset to the periphery, and then the pressed body is transferred to the downstream process for subsequent processing by a robotic arm (not shown in the figure) installed on the platform 1.

[0070] Among them, the mechanism that the cylinder 62 retracts to make the support rod 66 push the pressing body out of the rectangular cover 63 exposes the edge of the pressing body, avoiding the situation that the pressing body cannot be smoothly grasped and transferred by the robotic arm due to being blocked by the side wall of the rectangular cover 63. In addition, the power guide rail 61 drives the moving seat 611 to move, driving the rectangular cover 63 to reset to the periphery, which can avoid the circular frame 12 and the forming die 3 from shielding and blocking above the rectangular cover 63 and interfering with the operation of the robotic arm.

[0071] In addition, the suction pipe 65 is a rubber hose, which has the ability to bend and deform to adapt to the position change of the rectangular cover 63.

[0072] Embodiment 4

[0073] Please refer to Figure 3 and Figure 5 , the difference between this embodiment and Embodiment 3 is:

[0074] The pressing mechanism 5 includes a third hydraulic cylinder 53 and a pressing die 54. A vertical frame 51 is fixedly installed on the frame 1 vertically. A cantilever 52 is fixedly installed at the top of the vertical frame 51. The third hydraulic cylinder 53 is fixedly installed on the cantilever 52 vertically. The pressing die 54 is fixedly installed on the telescopic end of the third hydraulic cylinder 53. By the third hydraulic cylinder 53 extending to work, it can push the pressing die 54 into the mold cavity 31 located at the pressing area 02 to perform pressing and forming processing on the pre-rolled body in the mold cavity 31.

[0075] A suspension plate 7 is horizontally fixedly installed on the side end of the pre-pressing and feeding mechanism 4. The suspension plate 7 extends above the annealing area 03. An annealing pipe 71 is installed on the suspension plate 7. The bottom end of the annealing pipe 71 hangs downward. When the forming die 3 rotates to the annealing area 03, the pressing body in the mold cavity 31 can be annealed through the annealing pipe 71. The specific structure and specific working principle of the annealing pipe 71 and its affiliated components adopt the prior art and will not be elaborated in detail.

[0076] The driving mechanism 2 includes a driving motor 22, a main gear 23 and a driven gear 24. The driving motor 22 is fixedly installed on the frame 1 through a fixed seat 21. The main gear 23 is fixedly installed on the output shaft of the driving motor 22. The driven gear 24 is fixedly sleeved on the rotating shaft 11 and meshes with the main gear 23 correspondingly. By the driving motor 22 working, its output shaft drives the main gear 23 to rotate. The rotating main gear 23 meshes with and drives the driven gear 24 and rotates the rotating shaft 11 to provide driving for the entire rotary operation.

[0077] The control mode of the present invention is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The power supply also belongs to the common knowledge in this field. And the present invention mainly aims to protect the mechanical device, so the control mode and circuit connection of the present invention will not be elaborated in detail.

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

Claims

1. A nano-crystalline glass pressing and forming machine for an electro-optical cover plate, comprising a frame (1) with a rotating shaft (11) rotatably installed above, a circular frame (12) installed at the top of the rotating shaft (11), and a driving mechanism (2) provided on the frame (1), characterized in that: Four forming dies (3) are arranged in an array around the rotating shaft (11) on the circular frame (12); The four sides around the rotating shaft (11) above the frame (1) are in sequence a feeding area (01), a pressing area (02), an annealing area (03), and a blanking area (04); A pre-pressing and feeding mechanism (4) is provided on the frame (1) corresponding to the feeding area (01), and the pre-pressing and feeding mechanism (4) is used to pre-press the molten glass material and then put it into the cavity (31) of the forming die (3); A pressing mechanism (5) is provided on the frame (1) corresponding to the pressing area (02); In one rotation cycle of the circular frame (12), when the forming die (3) moves from the annealing area (03) to the blanking area (04), it flips half a turn to make the cavity (31) open downward, and when the forming die (3) moves from the blanking area (04) to the feeding area (01), it flips half a turn to reset to the state where the cavity (31) opens upward; A suction and demolding mechanism (6) is provided on the frame (1) on one side of the blanking area (04) for sucking out the formed body in the cavity (31).

2. The nano-crystalline glass pressing and forming machine for an electro-optical cover plate according to claim 1, characterized in that: The pre-pressing and feeding mechanism (4) includes a forming frame (42), a pressing plate (45), and a baffle (46); A bracket A (41) is fixed on the frame (1), and the forming frame (42) is fixed on the side of the bracket A (41) through a mounting plate (411); The forming frame (42) is vertically arranged and penetrates up and down. The pressing plate (45) is slidably and vertically installed in the forming frame (42), and the internal cross-sectional dimension of the forming frame (42) is smaller than the internal cross-sectional dimension of the cavity (31); 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), and the telescopic end of the second hydraulic cylinder (47) is fixed to the baffle (46) through an L-shaped arm (48); A first hydraulic cylinder (44) is vertically fixed above the bracket A (41), and the telescopic end of the first hydraulic cylinder (44) extends into the forming frame (42) and is fixed to the top of the pressing plate (45); The side of the forming frame (42) and above the baffle (46) has a feeding port (421), and a guide plate (43) is inclinedly installed at the position corresponding to the feeding port (421) on the side of the forming frame (42), and the other end of the guide plate (43) is connected to the discharging part of the melting furnace; Wherein, when the first hydraulic cylinder (44) retracts to the limit position, the feeding port (421) is located below the pressing plate (45).

3. An optical-electronic cover plate nano-crystalline glass hot pressing forming machine according to claim 1, characterized in that: The circular frame (12) is composed of a central disk (121), a circular frame (122) and support arms (123); The central disk (121) is fixed on the top of the rotating shaft (11). Four support arms (123) extending radially along the central disk (121) are fixedly arranged on the outer peripheral wall of the central disk (121) in an array, and the circular frame (122) is fixed on the ends of the support arms (123); Hollow parts (124) are respectively formed between the central disk (121) and the circular frame (122) and between adjacent support arms (123); The forming die (3) is arranged in the hollow part (124).

4. An optical-electronic cover plate nano-crystalline glass hot pressing forming machine according to claim 3, characterized in that: A shaft rod (8) is rotatably installed in each hollow part (124), and each forming die (3) is respectively fixed on the corresponding shaft rod (8); A worm gear (81) is fixed on each shaft rod (8). Four mounting arms (821) are evenly distributed at the bottom of the central disk (121). A worm (82) is rotatably installed on each mounting arm (821), and the worm (82) is respectively meshed with the corresponding worm gear (81); A driving gear (83) is fixed on the bottom end of each worm (82); An arc-shaped tooth section (84) is fixed on the frame (1) through a fixing rod (841). The arc-shaped tooth section (84) is coaxially arranged with the rotating shaft (11), and its covering path is the annealing area (03), the blanking area (04) to the feeding area (01).

5. An optical-electronic cover plate nano-crystalline glass hot pressing forming machine according to claim 1, characterized in that: The suction and blanking mechanism (6) includes a power guide rail (61), a cylinder (62) and a rectangular cover (63); The power guide rail (61) is installed on the frame (1), and the cylinder (62) is vertically fixed on the top of a moving seat (611) on the power guide rail (61); The rectangular cover (63) is fixed on the telescopic end of the cylinder (62) and is arranged with the opening facing upwards; One side of the rectangular cover (63) has a suction port (64). A suction pipe (65) is communicated with the suction port (64), and the end of the suction pipe (65) is communicated with an air extraction pump; When the cylinder (62) extends to the limit position, the top end of the rectangular cover (63) can be in contact and fit with the end face of the forming die (3). At this time, the rectangular cover (63) and the die cavity (31) cooperate to form a suction cavity; The internal cross-sectional dimension of the rectangular cover (63) is larger than the internal cross-sectional dimension of the die cavity (31).

6. An optical-electronic cover plate nano-crystalline glass hot pressing forming machine according to claim 5, characterized in that: Two through sliding holes (631) are symmetrically arranged at the bottom of the rectangular cover (63), and support rods (66) are slidably inserted in the two sliding holes (631); The bottom ends of the two support rods (66) are both fixedly connected to the top of the moving seat (611); Among them, when the cylinder (62) extends to the limit position, the top ends of the two support rods (66) are both retracted and stored in the rectangular cover (63); When the cylinder (62) retracts to the limit position, the top ends of the two support rods (66) both extend above the rectangular cover (63).

7. The nano-crystalline glass pressing and forming machine for an electro-optical cover plate according to claim 1, wherein: The pressing mechanism (5) includes a third hydraulic cylinder (53) and a pressing die (54); A vertical frame (51) is fixedly mounted on the frame (1), and a cantilever (52) is fixedly mounted on the top of the vertical frame (51); The third hydraulic cylinder (53) is vertically fixed on the cantilever (52); The pressing die (54) is fixed on the telescopic end of the third hydraulic cylinder (53).

8. The nano-crystalline glass pressing and forming machine for an electro-optical cover plate according to claim 2, wherein: A suspension plate (7) is horizontally fixed to the side end of the pre-pressing and feeding mechanism (4), and the suspension plate (7) extends above the annealing zone (03); An annealing tube (71) is mounted on the suspension plate (7), and the bottom end of the annealing tube (71) hangs downward for annealing the pressed body.

9. The nano-crystalline glass pressing and forming machine for an electro-optical cover plate according to claim 1, wherein: The driving mechanism (2) includes a driving motor (22), a main gear (23), and a driven gear (24); The driving motor (22) is fixed to the frame (1) through a fixing seat (21); The main gear (23) is fixed to the output shaft of the driving motor (22); The driven gear (24) is fixedly sleeved on the rotating shaft (11) and meshes with the main gear (23).

10. The nano-crystalline glass pressing and forming machine for an electro-optical cover plate according to claim 5, wherein: The suction pipe (65) is made of a rubber hose.

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