A short-distance imaging high-definition optical lens molding device

Abstract

The present invention discloses a short-distance imaging high-definition optical lens molding device, which relates to the technical field of molding. The molding device includes a base, a working cabinet, a pressurizing mechanism, a mold mechanism and a heating mechanism. The working cabinet is fixedly connected to the base. An observation window is provided on the side of the working cabinet. The pressurizing mechanism is fixedly connected to the base. The pressurizing mechanism is used to drive the mold mechanism to act. The mold mechanism is fixedly connected to the pressurizing mechanism. The heating mechanism is fixedly connected to the pressurizing mechanism. The heating mechanism is used to uniformly heat the mold mechanism. During processing, the workpiece to be processed is placed into the mold mechanism. Then the pressurizing mechanism is started to pre-press and fix the workpiece, fixing the workpiece in the mold mechanism. Then the heating mechanism is started to heat the mold mechanism, and the workpiece in the mold mechanism is heated by heat transfer to make it soften. Finally, the pressurizing mechanism applies an appropriate pressure to the mold mechanism to make the workpiece formed. After the workpiece is cooled and solidified, it can be taken out to complete one operation.

Description

Technical Field

[0001] The present invention relates to the technical field of molding, and specifically to a short-distance imaging high-definition optical lens molding device. Background Art

[0002] An optical lens molding device is a device used to manufacture high-definition optical lenses. First, according to the design requirements of the optical lens to be manufactured, a corresponding mold is made. The mold should have a high-precision optical surface to achieve the required optical imaging effect. An optical material (such as optical glass or plastic) is placed between the molds and preheated to an appropriate temperature to soften it. By applying appropriate pressure and temperature, after molding, the lens needs to be cooled and solidified at an appropriate temperature to ensure its shape and optical performance.

[0003] During the molding process, the workpiece to be processed is first placed in the mold, and then the mold is heated. However, the cross-section of the mold cavity is arc-shaped, while the cross-section of the workpiece is rectangular and cannot fit onto the surface of the mold cavity. There will be a certain gap between the surface of the workpiece and the mold. Since the thermal conductivity of air is poor, and the existing heating method often directly heats the mold. Under the action of heat transfer, the area with a large gap between the workpiece and the mold receives less heat, resulting in uneven heat on the workpiece during heating. This will cause temperature differences in different regions when the plastic softens, and uneven temperature changes during heating will cause deformation, resulting in internal stress in the workpiece, thus generating cold lines during the molding process and causing the molding quality to fail to meet the standards. Summary of the Invention

[0004] The purpose of the present invention is to provide a short-distance imaging high-definition optical lens molding device to solve the problems raised in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: The present invention provides a technical solution for a short-distance imaging high-definition optical lens molding device. The molding device includes a base, a working cabinet, a pressurizing mechanism, a mold mechanism, and a heating mechanism. The working cabinet is fixedly connected to the base. An observation window is provided on the side of the working cabinet. The pressurizing mechanism is fixedly connected to the base. The pressurizing mechanism is used to drive the mold mechanism to act. The mold mechanism is fixedly connected to the pressurizing mechanism. The heating mechanism is fixedly connected to the pressurizing mechanism. The heating mechanism is used to uniformly heat the mold mechanism.

[0006] The base is used to provide stable support for each mechanism, and the work cabinet is used to provide a working space for the molding operation, and the state of the molding can be observed in real time through the observation window on the side of the work cabinet; before the molding operation begins, first install the corresponding mold mechanism into the pressurizing mechanism, then place the workpiece to be processed into the mold mechanism, then start the pressurizing mechanism, pre-press and fix the workpiece, fix the workpiece into the mold mechanism, then start the heating mechanism to heat the mold mechanism, and use heat transfer to heat the workpiece in the mold mechanism to soften it, and finally the pressurizing mechanism applies appropriate pressure to the mold mechanism to form the workpiece, and the workpiece can be taken out after it cools and solidifies, completing one operation.

[0007] Furthermore, the pressurizing mechanism includes a lifting cylinder, a pressing cylinder, a movable seat and a fixed seat, the lifting cylinder is fastened to the base, the output end of the lifting cylinder is transmission-connected to the movable seat, the pressing cylinder is fastened to the movable seat, the output end of the pressing cylinder is transmission-connected to the mold mechanism, and the fixed seat is fastened to the base;

[0008] During pressing: the movable seat abuts against the fixed seat.

[0009] The lifting cylinder is fixed on the base to ensure stability. Before the molding operation begins, the lifting cylinder is started to drive the movable seat to move downward, so that the movable seat abuts against the surface of the fixed seat, so that a closed pressing space is formed between the movable seat and the fixed seat. When the workpiece is heated and softened, the pressing cylinder is started to drive the mold mechanism to move and perform molding operations on the workpiece. After the pressing is completed, the lifting cylinder drives the movable seat to move upward, and the molded workpiece in the mold mechanism can be taken out.

[0010] Furthermore, the mold mechanism includes an upper mold and a lower mold, the upper mold is tightly connected to the output end of the pressing cylinder, the upper mold is slidably connected to the inner wall of the movable seat, the fixed seat is provided with a slide groove, the lower mold is slidably connected to the slide groove, a cavity is provided on the end of the lower mold close to the upper mold, and a step surface is provided on the end of the lower mold away from the upper mold. The cross-section of the cavity is arc-shaped, and the shape of the step surface fits the cross-sectional shape of the cavity.

[0011] The slide groove constrains the lower die. When the workpiece is pre-pressed, the lower die will slide downward along the slide groove until it abuts against the bottom surface of the slide groove. During the molding operation, the pressing cylinder can drive the upper die to slide downward along the inner wall of the movable seat, thereby applying appropriate pressure to the workpiece placed on the lower die to form it. The slide groove on the fixed seat cooperates with the lower die, and different lower dies can be quickly replaced to press optical lenses with different curvatures. For lenses with different curvatures, the larger the curvature, the higher the bulge of the lens, the more prominent the arc of the cavity section on the lower die, and the more prominent the appearance of the stepped surface that fits the cross-sectional shape of the cavity.

[0012] Further, the heating mechanism includes a heating component and a detection component. The heating component is fixedly connected to the fixed seat, and the heating component is externally connected to a heat source. The detection component is fixedly connected to the fixed seat. The detection component is used to detect the curvature of the cavity on the lower mold. The detection component is externally connected to a control system, and the control system is used to control the heating efficiency of the heating component.

[0013] The heating component heats the lower mold through an externally connected heat source, thereby heating the workpiece in the lower mold. The heat source supplies hot oil at a certain temperature to the heating component 51 for heating. Since the shape of the stepped surface matches the arc cross-section of the cavity, by detecting the protrusion degree of the stepped surface, the curvature size of the cavity can be judged, and then the heating efficiency of the heating component can be controlled accordingly. The cross-section of the workpiece is rectangular and cannot fit onto the surface of the cavity. There will be a certain gap between the workpiece and the surface of the cavity, and the larger the curvature of the cavity, the larger the gap between the workpiece and the cavity, and the greater the heating amount required at the corresponding position.

[0014] Further, the heating component includes a heating ring, guide posts, and support springs. The heating ring is fixedly connected to the guide posts. There are two groups of guide posts, and the two groups of guide posts are symmetrically arranged at the bottom of the heating ring. The fixed seat is provided with a guide groove and a detection groove. One group of guide posts is slidably connected to the guide groove, and the other group of guide posts is slidably connected to the detection groove. One end of the support spring is fixedly connected to the inner wall of the guide groove, and the other end of the support spring is fixedly connected to the guide post. A detection component is provided in the detection groove. A number of heating rings are arranged, and adjacent heating rings are slidably connected;

[0015] During heating: A number of heating rings are in contact with the stepped surface.

[0016] Further, in the initial state, under the elastic force of the support spring, the guide posts are supported in the guide groove. A number of heating rings form a circular plane, and the positions of the number of heating rings are matched with the stepped surface. After the lower mold is placed on the fixed seat, during the process of pre-pressing and fixing the workpiece, the lower mold will slide downward along the chute until the lower mold abuts against the bottom surface of the chute. At this time, the heating rings in the corresponding area will be driven downward by the protruding stepped surface, causing the guide posts to move downward along the guide groove, and the support spring is compressed by the force. Moreover, the greater the protrusion degree, the longer the downward movement distance of the guide posts. By detecting the downward movement distance of the guide posts, the size of the protrusion degree in the corresponding area can be judged.

[0017] Further, the detection component includes a magnetic rod and a coil. The magnetic rod is fixedly connected to the guide post, and the coil is wound around the outside of the detection groove. The coil is electrically connected to the control system;

[0018] During detection: The magnetic rod is inserted into the coil to form an induced current.

[0019] The greater the curvature of the cavity, the greater the degree of protrusion, the longer the downward movement distance of the guide post in the detection groove, the longer the distance that the magnetic rod passes through the coil, and under the action of electromagnetic induction, the greater the current generated by the coil. That is, in the area where the control system detects a greater current, the greater the degree of protrusion of the cavity, the greater the gap between the surface of the cavity in this area and the workpiece, and the greater the amount of heat required.

[0020] Furthermore, the heating assembly further includes a liquid inlet pipe, a liquid outlet pipe, and a regulating valve. A heat conduction flow channel is provided in several heating rings. The liquid inlet pipe is externally connected to a heat source. The inlet of the regulating valve is communicated with the liquid inlet pipe, the outlet of the regulating valve is communicated with the heat conduction flow channel, the regulating valve is electrically connected to the control system, and the regulating valve is used to adjust the liquid inflow volume of the heat conduction flow channel. The outlet of the heat conduction flow channel is communicated with the liquid outlet pipe.

[0021] The liquid inlet pipe introduces hot oil into the heat conduction flow channel in the heating ring, heats the lower die through heat exchange, and then heats the workpiece on the lower die. The used hot oil is discharged through the liquid outlet pipe. A regulating valve is provided at the inlet of the heat conduction flow channel in each heating ring. The position of the regulating valve corresponds to that of the coil. For the coil at the position where the induced current is greater, the greater the degree of protrusion of the cavity surface in this area. The control system controls the greater the opening degree of the regulating valve at the corresponding position, the greater the amount of hot oil flowing through the heat conduction flow channel in this area, and the greater the amount of heat transferred from the heating ring in this area to the corresponding position of the lower die. That is, it realizes automatically adjusting the heating amount of each area according to the curvature size of the cavity on the lower die, making the heat transferred to the workpiece consistent, thus ensuring the uniformity of the workpiece heating process. After the workpiece heating is completed, the opening degrees of the regulating valves in each area return to their original positions to perform isothermal heating on the lower die, so that the temperature of the lower die remains consistent during pressing.

[0022] Furthermore, high-temperature resistant coatings are applied on the upper die and the lower die.

[0023] The high-temperature resistant coatings are used to improve the service life of the upper die and the lower die.

[0024] Furthermore, the heat source adopts an oil temperature machine, and the oil temperature machine is installed in the base.

[0025] The heat source adopts an oil temperature machine, and heats by supplying hot oil at a certain temperature to the heating assembly. The specific setting method of the oil temperature machine in the base is prior art and will not be elaborated here.

[0026] Furthermore, the heating rings are made of high thermal conductivity materials.

[0027] The heating rings made of high thermal conductivity materials can improve the heat conduction efficiency, and then quickly heat the die mechanism.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. By setting a lower mold with a stepped surface that fits the cross-sectional shape of the cavity, for lenses with different curvatures, the greater the curvature of the lens, the higher the protrusion. The arc of the cross-section of the cavity on the lower mold is more prominent, and the outer shape of the stepped surface that fits the cross-sectional shape of the cavity is more prominent, thus facilitating the judgment of the gap size between the workpiece and the cavity surface.

[0030] 2. By setting several heating rings whose positions cooperate with the stepped surface, after the lower mold is placed on the fixed seat, during the pre-pressing and fixing process of the workpiece, the lower mold will slide downward along the chute until the lower mold abuts against the bottom surface of the chute. At this time, the heating rings in the corresponding area will be driven downward by the protruding stepped surface, causing the guide posts to move downward along the guide grooves, and the support springs to be compressed under force. The greater the curvature of the cavity, the greater the degree of protrusion, the longer the distance that the guide posts in the detection groove move downward, and the longer the distance that the magnetic rod passes through the coil. Under the action of electromagnetic induction, the current generated by the coil is greater. That is, in the area where the control system detects a greater current, the degree of protrusion of the cavity is greater, and the gap between the surface of the cavity in this area and the workpiece is larger. The control system controls the opening degree of the regulating valve at the corresponding position to be larger, and the amount of heat oil flowing through the heat conduction runner in this area is larger, and the amount of heat transferred from the heating ring in this area to the lower mold at the corresponding position is larger. That is, it realizes automatically adjusting the heating amount of each area according to the curvature size of the cavity on the lower mold, so that the heat transferred to the workpiece is kept consistent, thus ensuring the uniformity of the workpiece heating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the overall structural schematic diagram of the present invention;

[0032] Figure 2 is the partial cross-sectional view of the present invention;

[0033] Figure 3 is the schematic diagram of the pressing mechanism of the present invention;

[0034] Figure 4 is the schematic diagram of the mold mechanism of the present invention;

[0035] Figure 5 is Figure 4 the partial enlarged view of A in;

[0036] Figure 6 is the schematic diagram of the heating mechanism of the present invention;

[0037] Figure 7 is Figure 6 the partial enlarged view of B in;

[0038] Figure 8 is the schematic diagram of the lower mold structure of the present invention;

[0039] Figure 9 is the schematic diagram of the heating ring structure of the present invention.

[0040] In the figure: 1 - base, 2 - working cabinet, 21 - observation window, 3 - pressurizing mechanism, 31 - lifting cylinder, 32 - pressing cylinder, 33 - movable seat, 34 - fixed seat, 341 - sliding groove, 342 - guiding groove, 343 - detection groove, 4 - die mechanism, 41 - upper die, 42 - lower die, 421 - cavity, 422 - stepped surface, 5 - heating mechanism, 51 - heating assembly, 511 - heating ring, 5111 - heat-conducting runner, 512 - guiding column, 513 - liquid inlet pipe, 514 - liquid outlet pipe, 515 - regulating valve, 516 - supporting spring, 52 - detection assembly, 521 - magnetic rod, 522 - coil. Specific implementation manner

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0042] Embodiment: As Figures 1-9 shown, the present invention provides a technical solution for a short-distance imaging high-definition optical lens molding device. The molding device includes a base 1, a working cabinet 2, a pressurizing mechanism 3, a die mechanism 4, and a heating mechanism 5. The working cabinet 2 is fixedly connected to the base 1. An observation window 21 is provided on the side of the working cabinet 2. The pressurizing mechanism 3 is fixedly connected to the base 1. The pressurizing mechanism 3 is used to drive the die mechanism 4 to act. The die mechanism 4 is fixedly connected to the pressurizing mechanism 3. The heating mechanism 5 is fixedly connected to the pressurizing mechanism 3. The heating mechanism 5 is used to uniformly heat the die mechanism 4.

[0043] The base 1 is used to provide stable support for each mechanism. The working cabinet 2 is used to provide a working space for the molding operation, and the state during molding can be observed in real time through the observation window 21 on the side of the working cabinet 2. Before the molding operation starts, first install the corresponding die mechanism 4 into the pressurizing mechanism 3, then place the workpiece to be processed into the die mechanism 4, then start the pressurizing mechanism 3 to pre-press and fix the workpiece, fix the workpiece into the die mechanism 4, then start the heating mechanism 5 to heat the die mechanism 4, use heat transfer to heat the workpiece in the die mechanism 4 to make it soften, and finally the pressurizing mechanism 3 applies an appropriate pressure to the die mechanism 4 to make the workpiece form. After the workpiece cools and solidifies, it can be taken out to complete one operation.

[0044] The pressing mechanism 3 includes a lifting cylinder 31, a pressing cylinder 32, a movable seat 33 and a fixed seat 34. The lifting cylinder 31 is fixedly connected to the base 1, the output end of the lifting cylinder 31 is in transmission connection with the movable seat 33, the pressing cylinder 32 is fixedly connected to the movable seat 33, the output end of the pressing cylinder 32 is in transmission connection with the die mechanism 4, and the fixed seat 34 is fixedly connected to the base 1;

[0045] During pressing: the movable seat 33 abuts against the fixed seat 34.

[0046] The lifting cylinder 31 is fixed on the base 1 to ensure stability. Before the die pressing operation starts, the lifting cylinder 31 is activated to drive the movable seat 33 to move downward, so that the movable seat 33 abuts against the surface of the fixed seat 34, forming a sealed pressing space between the movable seat 33 and the fixed seat 34. When the workpiece is heated and softened, the pressing cylinder 32 is activated to drive the die mechanism 4 to act and perform die pressing on the workpiece. After pressing is completed, the lifting cylinder 31 drives the movable seat 33 to move upward, and then the formed workpiece in the die mechanism 4 can be taken out.

[0047] The die mechanism 4 includes an upper die 41 and a lower die 42. The upper die 41 is fixedly connected to the output end of the pressing cylinder 32, the upper die 41 is slidably connected to the inner wall of the movable seat 33, a chute 341 is provided on the fixed seat 34, the lower die 42 is slidably connected to the chute 341, a cavity 421 is provided at one end of the lower die 42 close to the upper die 41, a stepped surface 422 is provided at the other end of the lower die 42 far from the upper die 41, the cross section of the cavity 421 is arc-shaped, and the shape of the stepped surface 422 fits the cross-sectional shape of the cavity 421.

[0048] The chute 341 plays a constraining role on the lower die. When pre-pressing the workpiece, the lower die 42 will slide downward along the chute 341 until the lower die 42 abuts against the bottom surface of the chute 341; during the die pressing operation, the pressing cylinder 32 can drive the upper die 41 to slide downward along the inner wall of the movable seat 33, so as to apply appropriate pressure to the workpiece placed on the lower die 42 to make it formed; the chute 341 on the fixed seat 34 cooperates with the lower die 42, and different lower dies 42 can be quickly replaced, and optical lenses with different curvatures can be pressed; for lenses with different curvatures, the larger the curvature of the lens, the higher the protrusion, the more prominent the arc of the cross section of the cavity 421 on the lower die 42, and the more prominent the shape of the stepped surface 422 that fits the cross-sectional shape of the cavity 421.

[0049] The heating mechanism 5 includes a heating component 51 and a detection component 52. The heating component 51 is fixedly connected to the fixed seat 34, the heating component 51 is externally connected to a heat source, the detection component 52 is fixedly connected to the fixed seat 34, the detection component 52 is used to detect the curvature of the cavity 421 on the lower die 42, the detection component 52 is externally connected to a control system, and the control system is used to control the heating efficiency of the heating component 51.

[0050] The heating component 51 heats the lower die 42 through an external heat source, thereby heating the workpiece within the lower die 42. The heat source heats by supplying hot oil at a certain temperature to the heating component 51. Since the shape of the stepped surface 422 matches the arc-shaped cross-section of the cavity 421, by detecting the protrusion degree of the stepped surface 422 with the detection component 52, the curvature size of the cavity 421 can be determined, and then the heating efficiency of the heating component 51 can be controlled accordingly. The cross-section of the workpiece is rectangular and cannot fit onto the surface of the cavity 421, leaving a certain gap between the workpiece and the surface of the cavity 421. Moreover, the greater the curvature of the cavity 421, the larger the gap between the workpiece and the cavity 421, and the greater the heating amount required at the corresponding position.

[0051] The heating component 51 includes a heating ring 511, a guide post 512, and a support spring 516. The heating ring 511 is fixedly connected to the guide post 512. There are two sets of guide posts 512, which are symmetrically arranged at the bottom of the heating ring 511. The fixed seat 34 is provided with a guide groove 342 and a detection groove 343. One set of guide posts 512 is slidably connected to the guide groove 342, and the other set of guide posts 512 is slidably connected to the detection groove 343. One end of the support spring 516 is fixedly connected to the inner wall of the guide groove 342, and the other end of the support spring 516 is fixedly connected to the guide post 512. A detection component 52 is provided in the detection groove 343. A number of heating rings 511 are arranged, and adjacent heating rings 511 are slidably connected.

[0052] During heating: A number of heating rings 511 are in contact with the stepped surface 422.

[0053] In the initial state, under the elastic force of the support spring 516, the guide post 512 is supported in the guide groove 342. A number of heating rings 511 form a circular plane, and the positions of the number of heating rings 511 are coordinated with the stepped surface 422. After the lower die 42 is placed on the fixed seat 34, during the process of pre-pressing and fixing the workpiece, the lower die 42 will slide downward along the chute 341 until the lower die 42 abuts against the bottom surface of the chute 341. At this time, the heating rings 511 in the corresponding area will be driven downward by the protruding stepped surface 422, causing the guide post 512 to move downward along the guide groove 342, and the support spring 516 is compressed by the force. Moreover, the greater the protrusion degree, the longer the downward movement distance of the guide post 512. By detecting the downward movement distance of the guide post 512, the size of the protrusion degree in the corresponding area can be determined.

[0054] The detection component 52 includes a magnetic rod 521 and a coil 522. The magnetic rod 521 is fixedly connected to the guide post 512, and the coil 522 is wound around the outside of the detection groove 343. The coil 522 is electrically connected to the control system.

[0055] During detection: The magnetic rod 521 is inserted into the coil 522 to form an induced current.

[0056] The greater the curvature of the cavity 421, the greater the degree of protrusion. The longer the distance that the guide post 512 in the detection groove 343 moves downward, the longer the distance that the magnetic rod 521 passes through the coil 522. Under the action of electromagnetic induction, the greater the current generated by the coil 522. That is, in the area where the control system detects a greater current, the greater the degree of protrusion of the cavity 421. The greater the gap between the surface of the cavity 421 in this area and the workpiece, the greater the amount of heat required.

[0057] The heating assembly 51 further includes a liquid inlet pipe 513, a liquid outlet pipe 514, and a regulating valve 515. A heat conduction flow channel 5111 is provided in a plurality of heating rings 511. The liquid inlet pipe 513 is externally connected to a heat source. The inlet of the regulating valve 515 is communicated with the liquid inlet pipe 513. The outlet of the regulating valve 515 is communicated with the heat conduction flow channel 5111. The regulating valve 515 is electrically connected to the control system. The regulating valve 515 is used to adjust the liquid inflow volume of the heat conduction flow channel 5111. The outlet of the heat conduction flow channel 5111 is communicated with the liquid outlet pipe 514.

[0058] The liquid inlet pipe 513 introduces hot oil into the heat conduction flow channel 5111 in the heating ring 511, heats the lower die 42 in the form of heat exchange, and then heats the workpiece on the lower die 42. The used hot oil is discharged through the liquid outlet pipe 514. A regulating valve 515 is provided at the inlet of the heat conduction flow channel 5111 in each heating ring 511. The position of the regulating valve 515 corresponds to that of the coil 522. For the coil 522 at the position where the induced current is greater, the greater the degree of protrusion of the cavity 421 in this area. The control system controls the greater the opening degree of the regulating valve 515 at the corresponding position, the greater the amount of hot oil flowing through the heat conduction flow channel 5111 in this area, and the greater the amount of heat transferred from the heating ring 511 in this area to the corresponding position of the lower die 42. That is, it realizes automatically adjusting the heating amount of each area according to the curvature of the cavity 421 on the lower die 42, so that the heat transferred to the workpiece is kept consistent, thus ensuring the uniformity of the workpiece heating process. After the workpiece heating is completed, the opening degrees of the regulating valves 515 in each area return to their original positions, and the lower die 42 is isothermally heated, so that the temperature of the lower die 42 is kept consistent during pressing.

[0059] The upper die 41 and the lower die 42 are coated with a high-temperature resistant coating.

[0060] The high-temperature resistant coating is used to improve the service life of the upper die 41 and the lower die 42.

[0061] The heat source adopts an oil temperature machine, and the oil temperature machine is installed in the base 1.

[0062] The heat source adopts an oil temperature machine, and heats by supplying hot oil at a certain temperature to the heating assembly 51. The specific setting method of the oil temperature machine in the base 1 is the prior art and will not be elaborated here.

[0063] The heating ring 511 is made of a high thermal conductivity material.

[0064] The heating ring 511 made of a high thermal conductivity material can improve the heat conduction efficiency, and then rapidly heat the mold mechanism 4.

[0065] The working principle of the present invention: Before the molding operation starts, the lifting cylinder 31 is activated to drive the movable seat 33 to move downward, so that the movable seat 33 abuts against the surface of the fixed seat 34, forming a sealed pressing space between the movable seat 33 and the fixed seat 34. When the workpiece is heated and softened, the pressing cylinder 32 is activated to drive the mold mechanism 4 to act. The chute 341 plays a constraining role on the lower mold. When pre-pressing the workpiece, the lower mold 42 will slide downward along the chute 341 until the lower mold 42 abuts against the bottom surface of the chute 341; at this time, the heating ring 511 in the corresponding area will be driven to move downward by the protruding stepped surface 422, so that the guide post 512 moves downward along the guide groove 342, and the support spring 516 is compressed under force. Moreover, the greater the degree of protrusion, the longer the downward movement distance of the guide post 512. By detecting the downward movement distance of the guide post 512, the size of the protrusion degree in the corresponding area can be judged; the longer the downward movement distance of the guide post 512 in the detection groove 343, the longer the distance that the magnetic rod 521 passes through the coil 522. Under the action of electromagnetic induction, the current generated by the coil 522 is greater. That is, in the area where the control system detects a greater current, the degree of protrusion of the cavity 421 is greater. The control system controls the opening degree of the regulating valve 515 at the corresponding position to be greater, and the amount of hot oil flowing through the heat conduction runner 5111 in this area is greater. The amount of heat transferred from the heating ring 511 in this area to the lower mold 42 at the corresponding position is greater; that is, it realizes automatically adjusting the heating amount of each area according to the curvature size of the cavity 421 on the lower mold 42, so that the heat transferred to the workpiece is kept consistent, thus ensuring the uniformity of the workpiece heating process.

[0066] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A short-range imaging high-definition optical lens molding device, characterized in that: The compression molding device comprises a base (1), a working cabinet (2), a pressurizing mechanism (3), a mold mechanism (4) and a heating mechanism (5); the working cabinet (2) is tightly connected to the base (1); an observation window (21) is provided on the side of the working cabinet (2); the pressurizing mechanism (3) is tightly connected to the base (1); the pressurizing mechanism (3) is used to drive the mold mechanism (4) to move; the mold mechanism (4) is tightly connected to the pressurizing mechanism (3); the heating mechanism (5) is tightly connected to the pressurizing mechanism (3); and the heating mechanism (5) is used to uniformly heat the mold mechanism (4); The pressurizing mechanism (3) comprises a lifting cylinder (31), a pressing cylinder (32), a movable seat (33) and a fixed seat (34); the lifting cylinder (31) is firmly connected to the base (1); the output end of the lifting cylinder (31) is transmission-connected to the movable seat (33); the pressing cylinder (32) is firmly connected to the movable seat (33); the output end of the pressing cylinder (32) is transmission-connected to the mold mechanism (4); and the fixed seat (34) is firmly connected to the base (1); During pressing: the movable seat (33) abuts against the fixed seat (34); The mold mechanism (4) comprises an upper mold (41) and a lower mold (42), the upper mold (41) being fixedly connected to the output end of the pressing cylinder (32), the upper mold (41) being slidably connected to the inner wall of the movable seat (33), the fixed seat (34) being provided with a slide groove (341), the lower mold (42) being slidably connected to the slide groove (341), a cavity (421) being provided at one end of the lower mold (42) close to the upper mold (41), and a stepped surface (422) being provided at one end of the lower mold (42) away from the upper mold (41), the cross section of the cavity (421) being arc-shaped, and the shape of the stepped surface (422) being matched with the cross section of the cavity (421); The heating mechanism (5) comprises a heating component (51) and a detection component (52); the heating component (51) is tightly connected to the fixing seat (34); the heating component (51) is externally connected to a heat source; the detection component (52) is tightly connected to the fixing seat (34); the detection component (52) is used to detect the curvature of the cavity (421) on the lower mold (42); the detection component (52) is externally connected to a control system; the control system is used to control the heating efficiency of the heating component (51).

2. The short-range imaging high-definition optical lens molding device according to claim 1, characterized in that: The heating assembly (51) comprises a heating ring (511), a guide column (512) and a support spring (516); the heating ring (511) is tightly connected to the guide column (512); two groups of guide columns (512) are provided, and the two groups of guide columns (512) are symmetrically arranged at the bottom of the heating ring (511); a guide groove (342) and a detection groove (343) are provided on the fixing seat (34); one group of guide columns (512) is slidably connected to the guide groove (342), and the other group of guide columns (512) is slidably connected to the detection groove (343); one end of the support spring (516) is tightly connected to the inner wall of the guide groove (342), and the other end of the support spring (516) is tightly connected to the guide column (512); a detection assembly (52) is provided in the detection groove (343); a plurality of heating rings (511) are arranged, and adjacent heating rings (511) are slidably connected; During heating: a plurality of the heating rings (511) abut against the step surface (422).

3. The short-range imaging high-definition optical lens molding device according to claim 2, characterized in that: The detection assembly (52) comprises a magnetic bar (521) and a coil (522), the magnetic bar (521) is tightly connected to the guide column (512), the coil (522) is wound around the outside of the detection slot (343), and the coil (522) is electrically connected to the control system; During detection: the magnetic bar (521) is inserted into the coil (522) to generate an induced current.

4. The short-range imaging high-definition optical lens molding device according to claim 3, characterized in that: The heating component (51) further comprises a liquid inlet pipe (513), a liquid outlet pipe (514) and a regulating valve (515); a plurality of the heating rings (511) are provided with a heat conduction channel (5111); the liquid inlet pipe (513) is externally connected to a heat source; the inlet of the regulating valve (515) is in communication with the liquid inlet pipe (513); the outlet of the regulating valve (515) is in communication with the heat conduction channel (5111); the regulating valve (515) is electrically connected to a control system; the regulating valve (515) is used to adjust the amount of liquid inlet to the heat conduction channel (5111); and the outlet of the heat conduction channel (5111) is in communication with the liquid outlet pipe (514).

5. The short-range imaging high-definition optical lens molding device according to claim 1, characterized in that: The upper mold (41) and the lower mold (42) are coated with a high temperature resistant coating.

6. The short-range imaging high-definition optical lens molding device according to claim 4, characterized in that: The heat source is an oil temperature machine, and the oil temperature machine is installed in the base (1).

7. The short-range imaging high-definition optical lens molding device according to claim 2, characterized in that: The heating ring (511) is made of a high thermal conductivity material.

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