Non-isothermal mold pressing equipment

Abstract

The utility model discloses non-isothermal mould pressing equipment which comprises a preheating device and a profiling device, the preheating device is connected with the profiling device through a channel, the profiling device comprises a profiling frame, an upper mould, a lower mould, a lifting shaft and a power device, the upper mould, the lower mould, the lifting shaft and the power device are arranged in the profiling frame, the lower mould is arranged at the top of the lifting shaft, and the lifting shaft is connected with the power device. The power device is used for driving the lifting shaft to move up and down so as to drive the upper mold and the lower mold to be opened or closed, the preheating device comprises a preheating box, a feeding assembly and a preheating assembly, the feeding assembly is used for controlling a glass prefabricated part to enter the preheating box, and the preheating assembly is provided with a heating tunnel for heating the glass prefabricated part; the preheating assembly can movably stretch into the position between the upper die and the lower die. According to the utility model, the preheating device extends between the upper mold and the lower mold, so that the preheated spherical glass prefabricated part directly falls into the lower mold, the spherical glass prefabricated part is not damaged, and the lens forming quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of precision molding of optical lenses, in particular to a non-isothermal molding device. Background Art

[0002] Precision compression molding is the most suitable technology for mass production of glass optical lenses. It usually involves heating the optical glass preform, squeezing the glass preform using a mold of a specific shape, and then cooling it down to obtain the glass lens of the desired shape. Currently, there are two types of precision compression molding processing methods for optical lenses: one is isothermal compression molding (IGMP) in which the mold and glass are heated, pressed, annealed, and cooled together; the other is non-isothermal compression molding (NGMP) in which the mold only participates in pressing and annealing and does not participate or does not fully participate in heating and cooling.

[0003] The patent document with publication number CN104176911A discloses a non-isothermal compression molding equipment and molding method: first, the glass preform is heated to above the yield temperature (At) in the preheating station; then, the vacuum suction cup on the robot arm sucks the high-temperature glass preform and puts it into the mold of the molding station for compression molding and annealing; finally, the vacuum suction cup on another robot arm takes the molded lens out of the molding station and puts it in the cooling plate of the cooling station to cool it to room temperature. Compared with isothermal compression molding, non-isothermal compression molding has the advantages of long mold life and high production efficiency.

[0004] At present, most of the glass preforms used for compression molding are spherical glass preforms. The above-mentioned type of equipment usually adopts a robot clamping or vacuum suction method to feed the high-temperature spherical glass preform into the compression mold and remove the lens from the mold. This type of equipment not only requires the robot to have excellent high-temperature resistance, but the clamping method is easy to damage the high-temperature spherical glass preform, and the vacuum suction will cause the high-temperature glass preform and the lens to lose temperature quickly, thereby affecting the surface quality of the molded lens. Utility Model Content

[0005] The main purpose of the utility model is to provide a non-isothermal molding device which does not damage the spherical glass preform and has high lens molding quality.

[0006] To achieve the above-mentioned purpose, the utility model proposes a non-isothermal molding equipment, including: a preheating device and a pressing device, the preheating device is connected to the pressing device by a channel, the pressing device includes a pressing frame and an upper mold, a lower mold, a lifting shaft and a power device arranged in the pressing frame, the lower mold is arranged at the top of the lifting shaft, the lifting shaft is connected to the power device, the power device is used to drive the lifting shaft to move up and down to drive the upper mold and the lower mold to open or close the mold, the preheating device includes a preheating box, a feeding assembly and a preheating assembly, the feeding assembly is used to control the glass preform to enter the preheating box, the preheating assembly is provided with a heating tunnel to heat the glass preform, and the preheating assembly can be moved to extend between the upper mold and the lower mold.

[0007] A further technical solution of the utility model is that the preheating assembly includes a preheating plate, a preheating plate bracket, a preheating push rod, a motor frame, a motor, a propulsion spring, a rotating rod and a propulsion cylinder, the preheating plate and the preheating plate bracket are fixedly connected, the preheating push rod passes through the preheating box to connect to the motor frame, the motor is fixed on the motor frame, the middle of the preheating plate is provided with the heating tunnel for heating the glass preform, the heating tunnel is provided with an opening for the glass preform to fall at one end close to the pressing device, the propulsion spring is arranged in the heating tunnel, the rotating rod passes through the hole in the middle of the preheating rod, the two ends are respectively connected to the propulsion spring and the motor shaft of the motor, and the motor frame is connected to the propulsion cylinder.

[0008] A further technical solution of the utility model is that the feed assembly includes a feed plate, a stopper, an isolation valve and an end cover;

[0009] The feed plate is connected to the inside and outside of the preheating box, the part inside the preheating box is provided with a U-shaped groove for placing glass preforms, and the part outside the preheating box is provided with a feed hole communicating with the U-shaped groove, and the feed hole is located outside the preheating box.

[0010] The end cover is located at one end of the box body of the preheating box away from the feed hole, and the isolation valve is located between the discharge pipe and the U-shaped groove. The stopper is arranged in the middle section of the U-shaped groove, and the stopper is located at one end of the U-shaped groove close to the preheating component, and the bottom of the stopper is provided with an inclined surface.

[0011] The feed hole and the bottom of the U-shaped groove are in the same straight line and inclined at a certain angle to the horizontal plane, so that the spherical glass preform can enter the U-shaped groove from the discharge pipe. The opening and closing of the isolation valve controls the glass preform to enter the U-shaped groove from the feed hole. When the stopper falls, the glass preform falls into the heating tunnel;

[0012] The stopper is provided with a stopper hole which is consistent with the inclination direction of the U-shaped groove. When the stopper is lowered, the stopper hole is lower than the bottom of the U-shaped groove, and the preform slides into the stopper hole. When the stopper is raised, the stopper hole is higher than the bottom of the U-shaped groove. The isolation valve can be raised and arranged in the middle section of the outer hole of the preheating box. The end cover is arranged at the opening of the feed hole. When the isolation valve is lowered, it isolates the inside and outside of the box body of the preheating box. At the same time, the end cover is opened to put the glass preform into the feed hole. When the end cover is closed and the isolation valve is raised, the glass preform rolls into the U-shaped groove from the feed hole.

[0013] A further technical solution of the utility model is that the press device also includes an upper heating plate, an upper heating plate sleeve, an upper locking mold sleeve, a mold sleeve, a lower heating plate, a lower heating plate sleeve and a lower locking mold sleeve, wherein the upper heating plate is fixed above the inner wall of the chamber of the press frame by the upper heating plate sleeve, the upper mold is fixed to the upper heating plate by the upper locking mold sleeve, the mold sleeve is sleeved on the upper mold, the lower mold is located in the cavity of the press frame, and is fixed to the lower heating plate by the lower locking mold sleeve, and the lower heating plate is fixed to the top end of the lifting shaft by the lower heating plate sleeve.

[0014] A further technical solution of the utility model is that the power device includes a screw, a screw nut, a bearing, a locking nut, a coupling and a motor, the screw nut is arranged on the inner wall of the lifting shaft, the screw extends into the lifting shaft and cooperates with the screw nut, the bearing is fixed in the chamber of the press frame through the locking nut, one end of the screw passes through the bearing, and is connected to the servo motor through the coupling.

[0015] A further technical solution of the utility model is that it also includes a cooling device, which is connected to the pressing device via a channel, and includes a cooling box, a cooling plate, a motor bracket, a cooling plate motor and a heating block, wherein the cooling plate is located in the cooling box, the motor bracket connects the cooling plate motor and the cooling box body, the cooling plate is provided with an axis extending out of the cooling box and connected to the rotating axis of the cooling plate motor, the surface of the cooling plate is provided with a plurality of recesses for placing lenses, and the heating block is provided below the cooling plate.

[0016] A further technical solution of the utility model is that the cross section of the concave cavity is V-shaped, and the concave cavity is distributed on the surface of the cooling disk in a centrally symmetrical manner.

[0017] A further technical solution of the utility model is that it also includes a picking component, which includes: a picking clamp, a picking clamp bracket, a hollow driving shaft, a picking cylinder frame, a picking cylinder, a picking rod, a pulling connecting rod, a pin and a rodless cylinder, the picking clamp is installed on the picking clamp bracket, the picking position of the picking clamp is located just above one of the recesses of the cooling plate, when the picking clamp is opened, the picked lens falls into the recess, the picking clamp bracket is connected to the hollow driving shaft, the hollow driving shaft passes through the cooling box and is connected to the picking cylinder frame outside the cooling box, the picking cylinder The cylinder is fixed on the picking cylinder frame, the picking rod passes through the center hole of the hollow pushing shaft, one end is connected to the picking cylinder, and the other end is connected to the picking clamp through the pulling connecting rod and pin. The rodless cylinder is located outside the cooling box, and the picking cylinder frame is connected to the rodless cylinder. When the picking cylinder is extended, the picking rod and the connecting rod are pulled, and the picking clamp is opened. When the picking cylinder is retracted, the picking clamp is closed. When the rodless cylinder moves forward, the picking clamp extends between the separated upper mold and the lower mold. When the rodless cylinder is reset, the picking clamp is retracted into the cooling box.

[0018] A further technical solution of the utility model is that the clamping part of the picking clamp is in a bracket shape, and a C-shaped groove is provided in the cross-sectional direction.

[0019] A further technical solution of the utility model is that it also includes a lens outlet, wherein the lens outlet is provided with a sealing plate, wherein the sealing plate is located at one side of the cooling box, wherein a circular hole is provided on the sealing plate, wherein the circular hole corresponds to one of the recesses on the surface of the cooling disk, and wherein a lens is taken out each time the cooling disk rotates.

[0020] The beneficial effects of the non-isothermal molding equipment of the utility model are:

[0021] The utility model comprises, through the above technical scheme, a preheating device and a press-forming device, wherein the preheating device is connected to the press-forming device by a channel, the press-forming device comprises a press-forming frame and an upper mold, a lower mold, a lifting shaft and a power device arranged in the press-forming frame, the lower mold is arranged at the top of the lifting shaft, the lifting shaft is connected to the power device, the power device is used to drive the lifting shaft to move up and down to drive the upper mold and the lower mold to open or close the mold, the preheating device comprises a preheating box, a feeding assembly and a preheating assembly, the feeding assembly is used to control the glass preform to enter the preheating box, the preheating assembly is provided with a heating tunnel to heat the glass preform, the preheating assembly can be movably extended between the upper mold and the lower mold, the preheating device for heating the spherical glass preform is extended between the upper and lower molds, and the preheating device for heating the spherical glass preform is allowed to fall directly into the lower mold after preheating, thereby achieving the goal of not damaging the spherical glass preform and improving the lens molding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the non-isothermal molding equipment of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the preheating device;

[0025] Figure 3 is a schematic diagram of the structure of the pickup assembly;

[0026] Figure 4 It is a schematic diagram of the structure of the lens outlet.

[0027] Description of Figure Numbers:

[0028] Press frame 1; upper mold 2; lower mold 3; lifting shaft 4; power device 5; preheating box 6; preheating plate 7; preheating plate bracket 8; preheating push rod 9; motor frame 10; motor 11; propulsion spring 12; rotating rod 13; propulsion cylinder 14; feed plate 15; stopper 16; isolation valve 17; end cover 18; upper heating plate 19; upper heating plate sleeve 20; upper clamping mold sleeve 21; mold sleeve 22; lower heating plate 23; lower heating plate sleeve 24; lower clamping mold sleeve 2 5; screw 26; screw nut 27; bearing 28; locking nut 29; coupling 30; servo motor 31; cooling box 32; cooling plate 33; motor bracket 34; cooling plate motor 35; heating block 36; pick-up clamp 37; pick-up clamp bracket 38; hollow push shaft 39; pick-up cylinder bracket 40; pick-up cylinder 41; pick-up pull rod 42; connecting rod 43; pin 44; rodless cylinder 45; sealing plate 46; preform 4; lens 48.

[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The present invention provides a non-isothermal molding device. The technical solution adopted by the present invention is mainly to extend a preheating device for heating a spherical glass preform between an upper and a lower mold, so that the preheated spherical glass preform directly falls into the lower mold.

[0032] For details, please refer to Figure 1 The preferred embodiment of the non-isothermal molding equipment of the present invention includes a preheating device and a pressing device. The preheating device is connected to the pressing device by a channel. The pressing device includes a pressing frame 1 and an upper mold 2, a lower mold 3, a lifting shaft 4 and a power device 5 arranged in the pressing frame 1. The lower mold 3 is arranged at the top of the lifting shaft 4, and the lifting shaft 4 is connected to the power device 5. The power device 5 is used to drive the lifting shaft 4 to move up and down to drive the upper mold 2 and the lower mold 3 to open or close the mold. The preheating device includes a preheating box 6, a feeding assembly and a preheating assembly. The feeding assembly is used to control the glass preform 47 to enter the preheating box 6. The preheating assembly is provided with a heating tunnel to heat the glass preform 47. The preheating assembly can be moved to extend between the upper mold 2 and the lower mold 3.

[0033] In this embodiment, the preheating assembly is used to heat the glass preform 47, and the pressing device is used to shape the high-temperature preform 47. The entire working area of ​​the preheating device and the pressing device is in a closed state.

[0034] In this embodiment, the non-isothermal molding equipment further includes a cooling device and a pickup assembly, wherein the cooling device is used to cool the molded lens 48 to room temperature.

[0035] During operation, the spherical glass preform 47 is fed into the preheating box 6 by the feeding assembly, and the preheating assembly heats the glass preform 47. After the preheating is completed, the preheating assembly extends into between the upper mold 2 and the lower mold 3 in the press frame 1, and the glass preform 47 slides from the heating tunnel of the preheating assembly to the lower mold 3. The preheating assembly leaves the upper mold 2 and the lower mold 3, and the lifting shaft 4 rises to close the mold and start pressing. After the pressing and annealing processes are completed, the upper mold 2 and the lower mold 3 are separated, and the picking assembly extends into between the upper mold 2 and the lower mold 3 to pick up the lens 48 and send it to the cooling device to cool to room temperature. During the working process, the high-temperature glass preform 47 will not be pinched or lose temperature when it is sent into the upper mold 2 and the lower mold 3. The preform 47 can enter the upper mold 2 and the lower mold 3 at a temperature higher than that of the upper mold 2 and the lower mold 3. During molding, the contact surface temperature of the upper mold 2, the lower mold 3 and the preform 47 is lower than the center temperature of the preform 47. The glass preform 47 is in a state of low internal viscosity and good fluidity, high surface viscosity and poor fluidity. It can be molded more efficiently without sticking to the mold, thereby improving the molding efficiency.

[0036] For further information, please refer to Figure 1 and Figure 2 In this embodiment, the preheating assembly includes a preheating plate 7, a preheating plate bracket 8, a preheating push rod 9, a motor frame 10, a motor 11, a propulsion spring 12, a rotating rod 13 and a propulsion cylinder 14. The preheating plate 7 and the preheating plate bracket 8 are fixedly connected, the preheating push rod 9 passes through the preheating box 6 to connect the motor frame 10, and the motor 11 is fixed on the motor frame 10. A heating tunnel for heating the glass preform 47 is arranged in the middle of the preheating plate 7, and an opening for the glass preform 47 to fall is arranged at one end of the heating tunnel close to the pressing device.

[0037] The propulsion spring 12 is a spiral propulsion device, and the propulsion spring 12 is arranged in the heating tunnel to propel the glass preform 47 to move in the heating tunnel.

[0038] The rotating rod 13 passes through the hole in the middle of the preheating push rod 9, and the two ends are respectively connected to the propulsion spring 12 and the motor 11 shaft of the motor 11, and the motor frame 10 is connected to the propulsion cylinder 14.

[0039] The preheating and feeding process of this embodiment is as follows: when the glass preform 47 that is first placed in the heating tunnel of the preheating plate 7 completes preheating, the propulsion cylinder 14 is actuated to push the motor frame 10, the preheating push rod 9, the preheating plate bracket 8 and the preheating plate 7 forward, and the preheating plate 7 extends between the separated upper mold 2 and the lower mold 3. The motor 11 drives the rotating rod 13 and the propulsion spring 12 to rotate, and the propulsion spring 12 pushes multiple glass preforms 47 to advance in the heating tunnel of the preheating plate 7. When the glass preform 47 that first enters the heating tunnel of the preheating plate 7 passes through the opening in the heating tunnel, the glass preform 47 falls onto the molding surface of the lower mold 3, and then the motor 11 stops rotating, the propulsion cylinder 14 resets, and drives the preheating plate 7 to be pushed out from between the upper mold 2 and the lower mold 3.

[0040] Please refer to Figure 1 and Figure 2 In this embodiment, the feed assembly includes a feed plate 15 , a stopper 16 , an isolation valve 17 and an end cover 18 .

[0041] The feed plate 15 connects the inside and outside of the preheating box 6 . The part inside the preheating box 6 is provided with a U-shaped groove for placing the glass preform 47 . The part outside the preheating box 6 is provided with a feed hole communicating with the U-shaped groove. The feed hole is located outside the preheating box 6 .

[0042] The end cap 18 is located at one end of the box body where the feed hole is away from the preheating box 6, and the isolation valve 17 is located between the discharge pipe and the U-shaped groove. The stopper 16 is set in the middle section of the U-shaped groove, the stopper 16 is located at one end of the U-shaped groove close to the preheating component, and the bottom of the stopper 16 is provided with an inclined surface.

[0043] The bottom of the feed hole and the U-shaped groove are in the same straight line and inclined at a certain angle to the horizontal plane, so that the spherical glass preform 47 can enter the U-shaped groove from the discharge pipe. The opening and closing of the isolation valve 17 controls the glass preform 47 to enter the U-shaped groove from the feed hole. When the stopper 16 falls, the glass preform 47 falls into the heating tunnel.

[0044] In this embodiment, when the glass preform enters the preheating box 6 from the air, oxygen is isolated from entering the preheating box 6, ensuring an oxygen-free environment during the entire molding process, and improving the service life of the mold and the yield of the lens 48. The stopper 16 is provided with a stopper hole in the same direction as the U-shaped groove. When the stopper 16 is lowered, the stopper hole is lower than the U-shaped groove, and the preform 47 slides into the stopper hole. When the stopper 16 is raised, the stopper hole is higher than the bottom of the U-shaped groove. The isolation valve 17 can be raised and arranged in the middle section of the outer hole of the preheating box 6.

[0045] The end cover 18 is arranged at the opening of the feed hole. When the isolation valve 17 is lowered, the inside and outside of the box body of the preheating box 6 are isolated. At the same time, the end cover 18 is opened to put the glass preform 47 into the feed hole. When the end cover 18 is closed and the isolation valve 17 is raised, the glass preform 47 rolls into the U-shaped groove from the feed hole.

[0046] Please refer to Figure 2When the preheating plate 7 is finished feeding and returns, the inclined surface at the upper end of the preheating plate bracket 8 lifts up the stopper 16. Because the stopper hole is higher than the U-shaped groove, the preform 47 in the stopper hole slides forward and falls into the heating tunnel of the preheating plate 7 and blocks the remaining preform 47 in the U-shaped groove; when the preheating plate 7 moves forward to feed the mold, the preheating plate bracket 8 moves forward, the movable stopper 16 falls, and the preform 47 in the groove of the feed plate 15 rolls into the stopper hole of the stopper 16. Since the stopper hole is lower than the U-shaped groove, the preform 47 stays in the stopper hole and blocks the remaining preforms 47; when all the preforms 47 in the U-shaped groove of the feed plate 15 fall into the preheating tunnel of the preheating plate 7, remove the end cover 18, put multiple preforms 47 into the inclined hole of the preheating plate 7 and cover it with the end cover 18, then raise the stopper 16, and after all the preforms 47 enter the U-shaped groove of the feed plate 15, lower the stopper 16 to isolate the inside and outside of the preheating box 6.

[0047] For further information, please refer to Figure 1 In this embodiment, the press device also includes an upper heating plate 19, an upper heating plate sleeve 20, an upper locking mold sleeve 21, a mold sleeve 22, a lower heating plate 23, a lower heating plate sleeve 24 and a lower locking mold sleeve 25, wherein the upper heating plate 19 is fixed above the inner wall of the chamber of the press frame 1 through the upper heating plate sleeve 20, the upper mold 2 is fixed on the upper heating plate 19 through the upper locking mold sleeve 21, the mold sleeve 22 is sleeved on the upper mold 2, the lower mold 3 is located in the cavity of the press frame 1, and is fixed to the lower heating plate 23 through the lower locking mold sleeve 25, and the lower heating plate 23 is fixed to the top of the lifting shaft 4 by the lower heating plate sleeve 24.

[0048] The power device 5 includes a screw 26, a screw nut 27, a bearing 28, a locking nut 29, a coupling 30 and a servo motor 31. The screw nut 27 is arranged on the inner wall of the lifting shaft 4. The screw 26 extends into the lifting shaft 4 and cooperates with the screw nut 27. The bearing 28 is fixed in the chamber of the press frame 1 through the locking nut 29. One end of the screw 26 passes through the bearing 28 and is connected to the servo motor 31 through the coupling 30.

[0049] Furthermore, in this embodiment, the non-isothermal molding equipment also includes a cooling device, and the cooling device is connected to the pressing device via a channel, and the entire working area of ​​the cooling device, the pressing device and the preheating device is in a closed state.

[0050] The cooling device includes a cooling box 32, a cooling plate 33, a motor bracket 34, a cooling plate motor 35, an insulation plate and a heating block 36. The cooling plate 33 is located in the cooling box 32. The motor bracket 34 connects the cooling plate motor 35 and the cooling box 32 body. The cooling plate 33 is provided with an axis extending out of the cooling box 32 and connected to the rotating axis of the cooling plate motor 35. The surface of the cooling plate 33 is provided with a plurality of recesses for placing lenses 48. The heating block 36 is arranged below the cooling plate 33 so that the cooling plate 33 stays at a suitable temperature.

[0051] In this embodiment, the cross section of the recess is V-shaped, and the recesses are centrally symmetrically distributed on the surface of the cooling plate 33 .

[0052] Please refer to Figures 1 to 3 In this embodiment, the non-isothermal molding equipment also includes a picking assembly, which includes: a picking clamp 37, a picking clamp bracket 38, a hollow push shaft 39, a picking cylinder frame 40, a picking cylinder 41, a picking pull rod 42, a pulling connecting rod 43, a pin 44 and a rodless cylinder 45.

[0053] The pick-up clamp 37 is mounted on the pick-up clamp bracket 38. The pick-up position of the pick-up clamp 37 is located just above one of the recesses of the cooling plate 33. When the pick-up clamp 37 is opened, the picked-up lens 48 falls into the recess. The pick-up clamp bracket 38 is connected to the hollow driving shaft 39. The hollow driving shaft 39 passes through the cooling box 32 and is connected to the pick-up cylinder frame 40 outside the cooling box 32. The pick-up cylinder 41 is fixed on the pick-up cylinder frame 40. The pick-up pull rod 42 passes through the center hole of the hollow driving shaft 39. One end is connected to the pick-up pull rod 42. The picking cylinder 41 has its other end connected to the picking clamp 37 by pulling the connecting rod 43 and pinning. The rodless cylinder 45 is located outside the cooling box 32. The picking cylinder frame 40 is connected to the rodless cylinder 45. When the picking cylinder 41 extends, the picking rod 42 and the connecting rod 43 are pulled to open the picking clamp 37. When the picking cylinder 41 retracts, the picking clamp 37 is closed. When the rodless cylinder 45 moves forward, the picking clamp 37 extends between the separated upper and lower dies. When the rodless cylinder 45 is reset, the picking clamp 37 retreats into the cooling box 32.

[0054] When the rodless cylinder 45 moves forward, it drives the picking clamp 37 to extend between the upper mold 2 and the lower mold 3, the lower mold 3 rises a certain distance, and the lens 48 on the lower mold 3 that has completed annealing is at the clamping position of the opened picking clamp 37, the picking cylinder 41 pulls the picking rod 42, the picking clamp 37 closes and clamps the lens 48, the lower mold 3 descends a certain distance, the rodless cylinder 45 resets, the picking clamp 37 returns to the cooling box 32, and then the picking cylinder extends out, the picking clamp 37 releases the lens 48, and the lens 48 falls into the recess of the cooling plate 33, and the cooling plate 33 rotates a certain angle, at this point, one clamping is completed.

[0055] In this embodiment, the clamping part of the pick-up clamp 37 is in a bracket shape, and a C-shaped groove is provided in the cross-sectional direction. In this embodiment, a limit stopper 16 is provided at the main body of the pick-up clamp 37 to limit the closing degree of the pick-up clamp 37. When clamping the lens 48, the lower edge of the C-shaped groove cooperates with the boss of the lower mold 3 to make the edge of the lens 48 fall into the C-shaped groove in a lifted state, thereby avoiding the lens 48 from being clamped and damaged.

[0056] In this embodiment, when the pick-up clamp 37 releases the lens 48 and drops it into the V-shaped recess of the cooling plate 33 , the edge of the lens 48 is always in contact with the cooling plate 33 , avoiding hitting the optically effective surface of the lens 48 .

[0057] Please refer to Figure 4 In this embodiment, the non-isothermal molding equipment also includes a lens 48 outlet, and a sealing plate 46 is provided at the lens 48 outlet. The sealing plate 46 is located on one side of the cooling box 32. A circular hole is provided on the sealing plate 46, and the circular hole corresponds to one of the recesses on the disk surface of the cooling disk 33. The cooling disk 33 takes out a lens 48 each time it rotates.

[0058] The beneficial effects of the non-isothermal molding equipment of the utility model are:

[0059] The utility model comprises, through the above technical scheme, a preheating device and a pressing device, wherein the preheating device is connected with the pressing device through a channel, the pressing device comprises a pressing frame and an upper mold, a lower mold, a lifting shaft and a power device arranged in the pressing frame, the lower mold is arranged at the top of the lifting shaft, the lifting shaft is connected with the power device, the power device is used to drive the lifting shaft to move up and down, so as to drive the upper mold and the lower mold to open or close the mold, the preheating device comprises a preheating box, a feeding assembly and a preheating assembly, the feeding assembly is used to control the glass preform to enter the preheating box, the preheating assembly is provided with a heating tunnel to heat the glass preform, the preheating assembly can be movably extended between the upper mold and the lower mold, the preheating device for heating the spherical glass preform is extended between the upper and lower molds, and the preheating device for heating the spherical glass preform is allowed to fall directly into the lower mold after preheating, thereby achieving the goal of not damaging the spherical glass preform and improving the lens molding quality.

[0060] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A non-isothermal molding device, characterized in that: include: A preheating device and a press device, wherein the preheating device is connected to the press device through a channel, the press device comprises a press frame and an upper mold, a lower mold, a lifting shaft and a power device arranged in the press frame, the lower mold is arranged on the top of the lifting shaft, the lifting shaft is connected to the power device, the power device is used to drive the lifting shaft to move up and down to drive the upper mold and the lower mold to open or close the mold, the preheating device comprises a preheating box, a feeding assembly and a preheating assembly, the feeding assembly is used to control the glass preform to enter the preheating box, the preheating assembly is provided with a heating tunnel to heat the glass preform, and the preheating assembly can be moved to extend between the upper mold and the lower mold.

2. The non-isothermal molding equipment according to claim 1, characterized in that: The preheating assembly includes a preheating plate, a preheating plate bracket, a preheating push rod, a motor frame, a motor, a propulsion spring, a rotating rod and a propulsion cylinder. The preheating plate and the preheating plate bracket are fixedly connected. The preheating push rod passes through the preheating box and is connected to the motor frame. The motor is fixed on the motor frame. The middle of the preheating plate is provided with the heating tunnel for heating the glass preform. The end of the heating tunnel close to the pressing device is provided with an opening for the glass preform to fall. The propulsion spring is arranged in the heating tunnel. The rotating rod passes through the hole in the middle of the preheating push rod. The two ends are respectively connected to the propulsion spring and the motor shaft of the motor. The motor frame is connected to the propulsion cylinder.

3. The non-isothermal molding equipment according to claim 2, characterized in that: The feed assembly includes a feed plate, a stopper, an isolation valve and an end cover; The feed plate is connected to the inside and outside of the preheating box, the part inside the preheating box is provided with a U-shaped groove for placing the glass preform, and the part outside the preheating box is provided with a feed hole communicating with the U-shaped groove, and the feed hole is located outside the preheating box; The end cover is located at one end of the box body of the preheating box where the feed hole is away from the preheating box, and the isolation valve is located between the discharge pipe and the U-shaped groove; the stopper is arranged in the middle section of the U-shaped groove, and the stopper is located at one end of the U-shaped groove close to the preheating assembly, and the bottom of the stopper is provided with an inclined surface; The feed hole and the bottom of the U-shaped groove are in the same straight line and inclined at a certain angle to the horizontal plane, so that the spherical glass preform can enter the U-shaped groove from the discharge pipe. The opening and closing of the isolation valve controls the glass preform to enter the U-shaped groove from the feed hole. When the stopper falls, the glass preform falls into the heating tunnel; The stopper is provided with a stopper hole which is consistent with the inclination direction of the U-shaped groove. When the stopper is lowered, the stopper hole is lower than the bottom of the U-shaped groove, and the preform slides into the stopper hole. When the stopper is raised, the stopper hole is higher than the bottom of the U-shaped groove. The isolation valve can be raised and arranged in the middle section of the outer hole of the preheating box. The end cover is arranged at the opening of the feed hole. When the isolation valve is lowered, it isolates the inside and outside of the box body of the preheating box. At the same time, the end cover is opened to put the glass preform into the feed hole. When the end cover is closed and the isolation valve is raised, the glass preform rolls into the U-shaped groove from the feed hole.

4. The non-isothermal molding equipment according to claim 1, characterized in that: The press device also includes an upper heating plate, an upper heating plate sleeve, an upper locking mold sleeve, a mold sleeve, a lower heating plate, a lower heating plate sleeve and a lower locking mold sleeve, wherein the upper heating plate is fixed above the inner wall of the chamber of the press frame by the upper heating plate sleeve, the upper mold is fixed to the upper heating plate by the upper locking mold sleeve, the mold sleeve is sleeved on the upper mold, the lower mold is located in the cavity of the press frame, and is fixed to the lower heating plate by the lower locking mold sleeve, and the lower heating plate is fixed to the top of the lifting shaft by the lower heating plate sleeve.

5. The non-isothermal molding equipment according to claim 4, characterized in that: The power device includes a screw, a screw nut, a bearing, a locking nut, a coupling and a motor. The screw nut is arranged on the inner wall of the lifting shaft. The screw extends into the lifting shaft and cooperates with the screw nut. The bearing is fixed in the chamber of the press frame through the locking nut. One end of the screw passes through the bearing and is connected to the motor through the coupling.

6. The non-isothermal molding equipment according to claim 1, characterized in that: It also includes a cooling device, which is connected to the pressing device via a channel. The cooling device includes a cooling box, a cooling plate, a motor bracket, a cooling plate motor and a heating block. The cooling plate is located in the cooling box, the motor bracket connects the cooling plate motor and the cooling box body, the cooling plate is provided with an axis extending out of the cooling box and connected to the rotating axis of the cooling plate motor, the surface of the cooling plate is provided with a plurality of recesses for placing lenses, and the heating block is provided below the cooling plate.

7. The non-isothermal molding equipment according to claim 6, characterized in that: The cross section of the concave cavity is V-shaped, and the concave cavity is centrally symmetrically distributed on the disk surface of the cooling disk.

8. The non-isothermal molding equipment according to claim 7, characterized in that: It also includes a picking component, which includes: a picking clamp, a picking clamp bracket, a hollow driving shaft, a picking cylinder frame, a picking cylinder, a picking rod, a pulling connecting rod, a pin and a rodless cylinder. The picking clamp is installed on the picking clamp bracket. The clamping position of the picking clamp is located directly above one of the recesses of the cooling plate. When the picking clamp is opened, the picked lens falls into the recess. The picking clamp bracket is connected to the hollow driving shaft. The hollow driving shaft passes through the cooling box and is connected to the picking cylinder frame outside the cooling box. The picking cylinder is fixed on the picking clamp. On the picking cylinder frame, the picking rod passes through the center hole of the hollow pushing shaft, one end is connected to the picking cylinder, and the other end is connected to the picking clamp through the pulling connecting rod and pin. The rodless cylinder is located outside the cooling box, and the picking cylinder frame is connected to the rodless cylinder. When the picking cylinder extends, the picking rod and the connecting rod are pulled, and the picking clamp opens. When the picking cylinder retracts, the picking clamp closes. When the rodless cylinder moves forward, the picking clamp extends between the separated upper mold and the lower mold. When the rodless cylinder is reset, the picking clamp retreats into the cooling box.

9. The non-isothermal molding equipment according to claim 8, characterized in that: The clamping part of the picking clamp is in a bracket shape, and a C-shaped groove is arranged in the cross-section direction.

10. The non-isothermal molding equipment according to claim 9, characterized in that: It also includes a lens outlet, which is provided with a sealing plate. The sealing plate is located on one side of the cooling box. A circular hole is provided on the sealing plate. The circular hole corresponds to one of the recesses on the surface of the cooling disk. The cooling disk takes out a lens each time it rotates.

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