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

Abstract

The invention discloses a compression molding device for a short-range imaging high-definition optical lens, and relates to the technical field of compression molding. The compression molding device comprises a base, a work cabinet, a pressurizing mechanism, a mold mechanism and a heating mechanism. The work cabinet is tightly connected to the base, and an observation window is provided on the side of the work cabinet. The pressurizing mechanism is tightly connected to the base, and the pressurizing mechanism is used to drive the mold mechanism to move. The mold mechanism is tightly connected to the pressurizing mechanism, and the heating mechanism is tightly connected to the pressurizing mechanism. The heating mechanism is used to uniformly heat the mold mechanism. During processing, a workpiece to be processed is placed in the mold mechanism, and then the pressurizing mechanism is started to pre-press and fix the workpiece, fix the workpiece in the mold mechanism, and then the heating mechanism is started to heat the mold mechanism, and the workpiece in the mold mechanism is heated by heat transfer to soften it. Finally, the pressurizing mechanism applies appropriate pressure to the mold mechanism to form the workpiece, and the workpiece can be taken out after cooling and solidifying, completing one operation.

Description

Technical Field

[0001] The invention relates to the technical field of compression molding, and in particular to a compression molding device for a short-range imaging high-definition optical lens. Background Art

[0002] Optical lens compression 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, the corresponding mold is made. The mold should have a high-precision optical surface and be able to achieve the required optical imaging effect. The optical material (such as optical glass or plastic) is placed between the molds and preheated to an appropriate temperature to soften it, and appropriate pressure and temperature are applied. 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 mold cavity has an arc-shaped cross-section, while the workpiece has a rectangular cross-section and cannot fit the surface of the mold cavity. There will be a certain gap between the workpiece and the surface of the mold. The thermal conductivity of air is poor, and the existing heating method often heats the mold directly. Under the action of heat transfer, the area with a large gap between the workpiece and the mold receives less heat, which will cause uneven heat when the workpiece is heated, and cause temperature differences in different areas of the plastic when it softens. Uneven temperature changes during heating will cause deformation, resulting in internal stress in the workpiece, which will cause cold lines during the molding process and cause 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-range imaging high-definition optical lens molding device to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: The present invention provides a technical solution for a short-range imaging high-definition optical lens compression molding device, the compression molding device includes a base, a working cabinet, a pressurizing mechanism, a mold mechanism and a heating mechanism, the working cabinet is tightly connected to the base, an observation window is provided on the side of the working cabinet, the pressurizing mechanism is tightly connected to the base, the pressurizing mechanism is used to drive the mold mechanism to move, the mold mechanism is tightly connected to the pressurizing mechanism, the heating mechanism is tightly connected to the pressurizing mechanism, and 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; During pressing: the movable seat abuts against the fixed seat.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] Furthermore, the heating mechanism includes a heating component and a detection component. The heating component is fastened to the fixed seat. The heating component is connected to an external heat source. The detection component is fastened to the fixed seat. The detection component is used to detect the curvature of the cavity on the lower mold. The detection component is connected to an external control system. The control system is used to control the heating efficiency of the heating component.

[0012] The heating component heats the lower mold through an external heat source, thereby heating the workpiece in the lower mold. The heat source heats the heating component 51 by supplying hot oil of a certain temperature. Because the shape of the step surface matches the arc-shaped cross-section of the cavity, the curvature of the cavity can be determined by detecting the degree of protrusion of the step surface through the detection component, and the heating efficiency of the heating component is 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 greater the curvature of the cavity, the greater the gap between the workpiece and the cavity, and the greater the heating required at the corresponding position.

[0013] Furthermore, the heating assembly includes a heating ring, a guide column and a support spring. The heating ring is tightly connected to the guide column. Two groups of guide columns are provided. The two groups of guide columns are symmetrically arranged at the bottom of the heating ring. A guide groove and a detection groove are provided on the fixing seat. One group of guide columns is slidably connected to the guide groove, and the other group of guide columns is slidably connected to the detection groove. One end of the support spring is tightly connected to the inner wall of the guide groove, and the other end of the support spring is tightly connected to the guide column. A detection assembly is provided in the detection groove. Several heating rings are arranged, and adjacent heating rings are slidably connected. During heating: several heating rings abut against the step surface.

[0014] Furthermore, in the initial state, under the elastic force of the support spring, the guide column is supported in the guide groove, and several heating rings form a circular plane, and the positions of several heating rings are matched with the step surface. After the lower die is placed on the fixed seat, during the pre-pressing and fixing process of the workpiece, the lower die will slide downward along the slide groove until the lower die abuts against the bottom surface of the slide groove. At this time, the heating ring in the corresponding area will be driven by the raised step surface to move downward, so that the guide column moves downward along the guide groove, the support spring is compressed, and the greater the degree of protrusion, the longer the distance the guide column moves downward. By detecting the distance the guide column moves downward, the degree of protrusion in the corresponding area can be judged.

[0015] Furthermore, the detection assembly includes a magnetic bar and a coil, the magnetic bar is tightly connected to the guide column, the coil is wound around the outside of the detection slot, and the coil is electrically connected to the control system; During detection: the magnetic rod is inserted into the coil to form an induced current.

[0016] The greater the curvature of the cavity, the greater the degree of protrusion, the longer the distance the guide column in the detection slot moves downward, the longer the distance the magnetic bar passes through the coil, and the greater the current generated by the coil under the action of electromagnetic induction. That is, the control system detects an area with a larger current, and the greater the degree of protrusion of the cavity, the larger the gap between the surface of the cavity in this area and the workpiece, and the greater the amount of heating required.

[0017] Furthermore, the heating component also includes a liquid inlet pipe, a liquid outlet pipe and a regulating valve. A heat conduction channel is provided in several heating rings. The liquid inlet pipe is connected to an external heat source. The inlet of the regulating valve is connected to the liquid inlet pipe, and the outlet of the regulating valve is connected to the heat conduction channel. The regulating valve is electrically connected to the control system. The regulating valve is used to adjust the liquid inlet amount of the heat conduction channel, and the outlet of the heat conduction channel is connected to the liquid outlet pipe.

[0018] The liquid inlet pipe guides the hot oil into the heat conduction channel in the heating ring, heats the lower mold through heat exchange, and then heats the workpiece on the lower mold, and the used hot oil is discharged through the liquid outlet pipe; and a regulating valve is provided at the inlet of the heat conduction channel in each heating ring, and the position of the regulating valve corresponds to the coil, and the greater the induced current of the coil at the position, the greater the degree of protrusion of the cavity in the surface area, the larger the opening of the regulating valve at the corresponding position controlled by the control system, the greater the amount of hot oil flowing through the heat conduction channel in the area, and the greater the heat transferred to the lower mold at the corresponding position by the heating ring in the area; that is, it realizes the automatic adjustment of the heating amount of each area according to the curvature of the cavity on the lower mold, so that the heat transferred to the workpiece remains consistent, thereby ensuring the uniformity of the workpiece heating process; after the heating of the workpiece is completed, the opening of the regulating valve in each area returns to the original position, and the lower mold is isothermally heated, so that the temperature of the lower mold remains consistent during pressing.

[0019] Furthermore, the upper mold and the lower mold are coated with a high temperature resistant coating.

[0020] High temperature resistant coating is used to increase the service life of upper and lower dies.

[0021] Furthermore, the heat source adopts an oil temperature machine, and the oil temperature machine is installed in the base.

[0022] The heat source adopts an oil temperature machine, which heats the heating component by supplying hot oil of a certain temperature. The specific setting method of the oil temperature machine in the base is the existing technology and will not be described here.

[0023] Furthermore, the heating ring is made of a high thermal conductivity material.

[0024] The heating ring made of high thermal conductivity material can improve the thermal conductivity efficiency and thus heat the mold structure quickly.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 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 larger the curvature, the higher the bulge of the lens, the more prominent the arc of the cavity cross section on the lower mold, and the more prominent the appearance of the stepped surface that fits the cross-sectional shape of the cavity, thereby facilitating the judgment of the gap size between the workpiece and the cavity surface.

[0026] 2. By setting a number of heating rings whose positions match the stepped surface, after the lower die is placed on the fixed seat, during the process of pre-pressing and fixing the workpiece, the lower die will slide downward along the slide groove until the lower die abuts against the bottom surface of the slide groove. At this time, the heating ring in the corresponding area will be driven by the raised stepped surface to move downward, so that the guide column moves downward along the guide groove, and the support spring is compressed. The greater the curvature of the cavity, the greater the degree of protrusion, the longer the distance the guide column in the detection groove moves downward, and the longer the distance the magnetic bar passes through the coil. Under the action of electromagnetic induction, the greater the current generated by the coil, that is, the greater the area where the control system detects the greater the 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, the greater the opening of the regulating valve at the corresponding position controlled by the control system, the greater the amount of hot oil flowing through the heat conduction channel in this area, and the greater the heat transferred to the lower die at the corresponding position by the heating ring in this area; that is, the heating amount of each area is automatically adjusted according to the curvature of the cavity on the lower die, so that the heat transferred to the workpiece remains consistent, thereby ensuring the uniformity of the workpiece heating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial cross-sectional view of the present invention; Figure 3 It is a schematic diagram of the pressurizing mechanism of the present invention; Figure 4 It is a schematic diagram of the mold mechanism of the present invention; Figure 5 for Figure 4 A local enlarged view of point A; Figure 6 It is a schematic diagram of the heating mechanism of the present invention; Figure 7 for Figure 6 A partial enlarged view of point B; Figure 8 It is a schematic diagram of the lower mold structure of the present invention; Fig. 9 It is a schematic diagram of the heating ring structure of the present invention.

[0028] 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-slide, 342-guide groove, 343-detection groove, 4-mold mechanism, 41-upper mold, 42-lower mold, 421-cavity, 422-step surface, 5-heating mechanism, 51-heating component, 511-heating ring, 5111-heat conduction channel, 512-guide column, 513-liquid inlet pipe, 514-liquid outlet pipe, 515-regulating valve, 516-support spring, 52-detection component, 521-magnetic rod, 522-coil. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example: Figure 1-Figure 9 As shown, the present invention provides a technical solution for a short-range imaging high-definition optical lens compression molding device, the compression molding device includes a base 1, a work cabinet 2, a pressurizing mechanism 3, a mold mechanism 4 and a heating mechanism 5, the work cabinet 2 is tightly connected to the base 1, an observation window 21 is provided on the side of the work 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.

[0031] The base 1 is used to provide stable support for each mechanism, and the work cabinet 2 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 21 on the side of the work cabinet 2; before the molding operation starts, the corresponding mold mechanism 4 is first installed in the pressurizing mechanism 3, and then the workpiece to be processed is placed in the mold mechanism 4, and then the pressurizing mechanism 3 is started to pre-press and fix the workpiece, fix the workpiece in the mold mechanism 4, and then start the heating mechanism 5 to heat the mold mechanism 4, and use heat transfer to heat the workpiece in the mold mechanism 4 to soften it. Finally, the pressurizing mechanism 3 applies appropriate pressure to the mold mechanism 4 to form the workpiece, and the workpiece can be taken out after it cools and solidifies, completing one operation.

[0032] The pressurizing 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 fastened 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 fastened 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 fastened to the base 1; During pressing: the movable seat 33 abuts against the fixed seat 34 .

[0033] The lifting cylinder 31 is fixed on the base 1 to ensure stability. Before the molding operation begins, the lifting cylinder 31 is started to drive the movable seat 33 to move downward, so that the movable seat 33 abuts against the surface of the fixed seat 34, so that a closed pressing space is formed between the movable seat 33 and the fixed seat 34. When the workpiece is heated and softened, the pressing cylinder 32 is started to drive the mold mechanism 4 to move and perform the molding operation on the workpiece. After the pressing is completed, the lifting cylinder 31 drives the movable seat 33 to move upward, and the molded workpiece in the mold mechanism 4 can be taken out.

[0034] The mold mechanism 4 includes an upper mold 41 and a lower mold 42. The upper mold 41 is tightly connected to the output end of the pressing cylinder 32, the upper mold 41 is slidably connected to the inner wall of the movable seat 33, a sliding groove 341 is provided on the fixed seat 34, and the lower mold 42 is slidably connected to the sliding groove 341. A cavity 421 is provided on the end of the lower mold 42 close to the upper mold 41, and a step surface 422 is provided on the end of the lower mold 42 away from the upper mold 41. The cross-section of the cavity 421 is arc-shaped, and the shape of the step surface 422 fits the cross-sectional shape of the cavity 421.

[0035] The slide groove 341 constrains the lower mold. When the workpiece is pre-pressed, the lower mold 42 will slide downward along the slide groove 341 until the lower mold 42 abuts against the bottom surface of the slide groove 341; during the molding operation, the pressing cylinder 32 can drive the upper mold 41 to slide downward along the inner wall of the movable seat 33, thereby applying appropriate pressure to the workpiece placed on the lower mold 42 to form it; the slide groove 341 on the fixed seat 34 cooperates with the lower mold 42, and different lower molds 42 can be quickly replaced to press optical lenses with different curvatures; for lenses with different curvatures, the larger the curvature, the higher the protrusion of the lens, the more prominent the arc of the cross-section of the cavity 421 on the lower mold 42, and the more prominent the appearance of the stepped surface 422 that fits the cross-sectional shape of the cavity 421.

[0036] The heating mechanism 5 includes a heating component 51 and a detection component 52. The heating component 51 is fastened to the fixed seat 34. The heating component 51 is externally connected to a heat source. The detection component 52 is fastened to the fixed 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, and the control system is used to control the heating efficiency of the heating component 51.

[0037] The heating component 51 heats the lower mold 42 through an external heat source, thereby heating the workpiece in the lower mold 42. The heat source heats the heating component 51 by supplying hot oil of a certain temperature to the heating component 51. Because the shape of the step surface 422 matches the arc-shaped cross-section of the cavity 421, the curvature of the cavity 421 can be determined by detecting the protrusion of the step surface 422 by the detection component 52, and the heating efficiency of the heating component 51 can be controlled accordingly. However, the cross-section of the workpiece is rectangular and cannot fit onto the surface of the cavity 421. A certain gap will be left between the workpiece and the surface of the cavity 421, and the greater the curvature of the cavity 421, the greater the gap between the workpiece and the cavity 421, and the greater the heating required at the corresponding position.

[0038] The heating assembly 51 includes a heating ring 511, a guide column 512 and a support spring 516. The heating ring 511 is fastened to the guide column 512. There are two groups of guide columns 512. The two groups of guide columns 512 are symmetrically arranged at the bottom of the heating ring 511. The fixing seat 34 is provided with a guide groove 342 and a detection groove 343. 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 fastened to the inner wall of the guide groove 342, and the other end of the support spring 516 is fastened 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 heating rings 511 abut against the step surface 422 .

[0039] In the initial state, under the elastic force of the support spring 516, the guide column 512 is supported in the guide groove 342, and a plurality of heating rings 511 form a circular plane, and the positions of the plurality of heating rings 511 are matched with the step surface 422. After the lower mold 42 is placed on the fixed seat 34, during the pre-pressing and fixing process of the workpiece, the lower mold 42 will slide downward along the slide groove 341 until the lower mold 42 abuts against the bottom surface of the slide groove 341. At this time, the heating ring 511 in the corresponding area will be driven by the raised step surface 422 to move downward, so that the guide column 512 moves downward along the guide groove 342, and the support spring 516 is compressed by force. The greater the degree of protrusion, the longer the distance the guide column 512 moves downward. The degree of protrusion in the corresponding area can be determined by detecting the distance the guide column 512 moves downward.

[0040] The detection assembly 52 includes 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. 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.

[0041] The greater the curvature of the cavity 421, the greater the degree of protrusion, the longer the distance that the guide column 512 in the detection slot 343 moves downward, and 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, the control system detects that the greater the current in the area, the greater the degree of protrusion of the cavity 421, the larger the gap between the surface of the cavity 421 in this area and the workpiece, and the greater the required heating amount.

[0042] The heating component 51 also includes a liquid inlet pipe 513, a liquid outlet pipe 514 and a regulating valve 515. A heat conduction channel 5111 is provided in the plurality of heating rings 511. The liquid inlet pipe 513 is connected to an external heat source. The inlet of the regulating valve 515 is connected to the liquid inlet pipe 513. The outlet of the regulating valve 515 is connected to the heat conduction channel 5111. The regulating valve 515 is electrically connected to the control system. The regulating valve 515 is used to adjust the liquid inlet amount of the heat conduction channel 5111. The outlet of the heat conduction channel 5111 is connected to the liquid outlet pipe 514.

[0043] The liquid inlet pipe 513 guides the hot oil into the heat conduction channel 5111 in the heating ring 511, heats the lower mold 42 through heat exchange, and then heats the workpiece on the lower mold 42. The used hot oil is discharged through the liquid outlet pipe 514; and a regulating valve 515 is provided at the inlet of the heat conduction channel 5111 in each heating ring 511. The position of the regulating valve 515 corresponds to the coil 522. The greater the induced current of the coil 522, the greater the degree of protrusion of the cavity 421 in the surface area. The control system controls the corresponding position. The larger the opening of the regulating valve 515, the greater the amount of hot oil flowing through the heat conduction channel 5111 in this area, and the greater the heat transferred from the heating ring 511 in this area to the lower mold 42 at the corresponding position; that is, the heating amount of each area is automatically adjusted according to the curvature of the upper cavity 421 of the lower mold 42, so that the heat transferred to the workpiece remains consistent, thereby ensuring the uniformity of the workpiece heating process; after the heating of the workpiece is completed, the opening of the regulating valve 515 in each area returns to its original position, and the lower mold 42 is isothermally heated, so that the temperature of the lower mold 42 remains consistent during pressing.

[0044] The upper mold 41 and the lower mold 42 are coated with a high temperature resistant coating.

[0045] The high temperature resistant coating is used to increase the service life of the upper mold 41 and the lower mold 42 .

[0046] The heat source is an oil temperature machine, which is installed in the base 1.

[0047] The heat source adopts an oil temperature machine, which heats the heating component 51 by supplying hot oil of a certain temperature. The specific setting method of the oil temperature machine in the base 1 is the existing technology and will not be described in detail here.

[0048] The heating ring 511 is made of a high thermal conductivity material.

[0049] The heating ring 511 made of high thermal conductivity material can improve the thermal conductivity efficiency, thereby quickly heating the mold mechanism 4.

[0050] The working principle of the present invention is as follows: before the molding operation begins, the lifting cylinder 31 is started, driving the movable seat 33 to move downward, so that the movable seat 33 abuts against the surface of the fixed seat 34, so that a closed pressing space is formed between the movable seat 33 and the fixed seat 34; when the workpiece is heated and softened, the pressing cylinder 32 is started, driving the mold mechanism 4 to move, and the slide groove 341 constrains the lower mold; when the workpiece is pre-pressed, the lower mold 42 will slide downward along the slide groove 341 until the lower mold 42 abuts against the bottom surface of the slide groove 341; at this time, the heating ring 511 in the corresponding area will be driven by the raised step surface 422 to move downward, so that the guide column 512 moves downward along the guide groove 342, the support spring 516 is compressed by force, and the greater the degree of protrusion, the longer the distance the guide column 512 moves downward, through By detecting the distance that the guide column 512 moves downward, the degree of protrusion of the corresponding area can be determined; the longer the distance that the guide column 512 in the detection slot 343 moves downward, the longer the distance that the magnetic rod 521 passes through the coil 522, and the greater the current generated by the coil 522 under the action of electromagnetic induction, that is, the greater the area where the control system detects the current, the greater the degree of protrusion of the cavity 421, the larger the opening of the regulating valve 515 at the corresponding position controlled by the control system, the greater the amount of hot oil flowing through the heat conduction channel 5111 in the area, and the greater the heat transferred to the lower mold 42 at the corresponding position by the heating ring 511 in the area; that is, it realizes the automatic adjustment of the heating amount of each area according to the curvature of the cavity 421 on the lower mold 42, so that the heat transferred to the workpiece remains consistent, thereby ensuring the uniformity of the workpiece heating process.

[0051] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

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).

2. The short-range imaging high-definition optical lens molding device according to claim 1, characterized in that: 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).

3. The short-range imaging high-definition optical lens molding device according to claim 2, characterized in that: The mold mechanism (4) comprises an upper mold (41) and a lower mold (42), wherein the upper mold (41) is tightly connected to the output end of the pressing cylinder (32), the upper mold (41) is slidably connected to the inner wall of the movable seat (33), the fixed seat (34) is provided with a slide groove (341), the lower mold (42) is slidably connected to the slide groove (341), a cavity (421) is provided at one end of the lower mold (42) close to the upper mold (41), and a stepped surface (422) is provided at one end of the lower mold (42) away from the upper mold (41), the cross section of the cavity (421) is arc-shaped, and the shape of the stepped surface (422) matches the cross section of the cavity (421).

4. The short-range imaging high-definition optical lens molding device according to claim 3, characterized in that: 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).

5. The short-range imaging high-definition optical lens molding device according to claim 4, 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).

6. The short-range imaging high-definition optical lens molding device according to claim 5, 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.

7. The short-range imaging high-definition optical lens molding device according to claim 6, 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).

8. The short-range imaging high-definition optical lens molding device according to claim 3, characterized in that: The upper mold (41) and the lower mold (42) are coated with a high temperature resistant coating.

9. The short-range imaging high-definition optical lens molding device according to claim 7, characterized in that: The heat source is an oil temperature machine, and the oil temperature machine is installed in the base (1).

10. The short-range imaging high-definition optical lens molding device according to claim 5, characterized in that: The heating ring (511) is made of a high thermal conductivity material.

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