Mould pressing equipment

Abstract

The embodiment of the invention provides mold pressing equipment, and relates to the technical field of glass lens processing. The mold pressing equipment comprises a rack, and a first driving assembly, a second driving assembly, an adjusting assembly and a mold assembly which are arranged on the rack. The mold assembly is arranged on the first driving assembly, the second driving assembly is arranged on the side, away from the first driving assembly, of the mold assembly, and the first driving assembly and the second driving assembly get close to each other in the first direction so as to abut against the two ends of the mold assembly respectively, or the first driving assembly and the second driving assembly get away from each other in the first direction. The adjusting assembly comprises a vacuum cavity and a heating piece, the mold assembly is located in the vacuum cavity, and the heating piece adjusts the temperature in the vacuum cavity. Double-side mold pressing is achieved through the first driving assembly and the second driving assembly, the mold assembly is evenly stressed, the mold assembly can be evenly heated through the heating piece, and the yield of mold pressing finished products is increased.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of glass lens processing, and in particular to a molding device. Background Art

[0002] Compared with plastic lenses, glass lenses have better transparency, durability, heat resistance and corrosion resistance, and have superior optical properties, which can provide better imaging effects. The processing methods of glass lenses include cold working grinding and molding. Among them, the processing method of cold working grinding is inefficient and difficult to meet large-scale needs in actual mass production. The processing method of molding can improve production efficiency. Especially for aspheric glass lenses, compared with cold working, molding has greater potential and has become a current research hotspot.

[0003] However, in the mold closing process of the existing molding equipment, the pressure on the upper and lower surfaces of the glass preform is different, and the surface accuracy of the upper and lower surfaces of the molded product after molding is different, which reduces the yield rate of the molded product. Summary of the invention

[0004] An embodiment of the present application provides a molding device for improving the yield rate of molded products.

[0005] The embodiments of the present application provide the following technical solutions: The embodiment of the present application provides a molding device, which includes: a frame, and a first drive assembly, a second drive assembly, an adjustment assembly and a mold assembly arranged on the frame; The mold assembly is arranged on the first driving assembly, the second driving assembly is arranged on a side of the mold assembly away from the first driving assembly, the first driving assembly and the second driving assembly are close to each other along a first direction so as to respectively press two ends of the mold assembly, or the first driving assembly and the second driving assembly are away from each other along the first direction; The regulating component comprises a vacuum chamber and a heating element, the mold assembly is located in the vacuum chamber, and the heating element regulates the temperature in the vacuum chamber.

[0006] In some possible embodiments, the heating element spirally surrounds at least a portion of the mold assembly.

[0007] In some possible embodiments, the heating element includes an infrared lamp; The infrared lamp tube comprises a main body and two lead-out ends respectively connected to two ends of the main body. The main body is spiral-shaped, and the two lead-out ends are arranged at intervals on the same side of the outer periphery of the main body.

[0008] In some possible embodiments, the adjustment component further includes: a first driving member, wherein the first driving member is fixed relative to the frame; A first support member, the first support member is disposed beside the first driving member and is in transmission connection with the first driving member, the first support member has a first through hole for the second driving component to pass through, and is sealed and connected with the second driving component; A sealing cover, wherein the sealing cover is fixed and sealed to the first support member, the vacuum chamber is arranged in the sealing cover, and the vacuum chamber extends to two opposite ends of the sealing cover along the first direction to form openings, and the openings are communicated with the first through hole; a second support member, the second support member is sleeved outside the sealing cover, connected to the first support member, and moves relative to the first support member, and the heating member is arranged on the inner wall of the second support member; A cooling member is arranged on an outer wall of the second supporting member.

[0009] In some possible embodiments, the first driving member includes: At least two transverse plates, the at least two transverse plates are arranged at intervals along the first direction and are fixedly connected relative to the frame; A first vertical plate, which is disposed on one side of the at least two horizontal plates and is fixedly connected to the horizontal plates; A rodless cylinder is arranged on a side of the first vertical plate away from the horizontal plate and is fixedly connected to the first vertical plate. The rodless cylinder has an output end, and the output end is fixedly connected to the first support member.

[0010] In some possible embodiments, the first driving member further includes: At least two buffer members, wherein the two buffer members are arranged at two opposite ends of the rodless cylinder along the first direction, and the first supporting member is arranged between the two buffer members.

[0011] In some possible embodiments, the first support member includes: a second vertical plate, the second vertical plate being connected to the first driving member and moving along the first direction under the driving of the first driving member; A first horizontal plate, the first horizontal plate is arranged on a side of the second vertical plate away from the first driving member and is fixedly connected to the second vertical plate; A first air intake block, which is disposed on a first side of the first horizontal plate along the first direction and is fixedly connected to the first horizontal plate, and a first air intake port is provided on a side of the first air intake block; A first guide seal, which is disposed on a side of the first air intake block away from the first horizontal plate and is fixedly connected to the first air intake block; a first cooling plate, the first cooling plate being arranged on a second side of the first horizontal plate along the first direction and being fixedly connected to the first horizontal plate, and a first cooling channel being arranged in the first cooling plate; a first fixing plate, the first fixing plate being sleeved outside the sealing cover and fixedly connected to the first cooling plate, the first end of the sealing cover being sandwiched between the first fixing plate and the first cooling plate; The first through hole passes through the first horizontal plate, the first air intake block, the first guide seal, the first cooling plate and the first fixed plate, and is connected to the first air intake port. The first guide seal circumferentially seals the second drive assembly.

[0012] In some possible embodiments, the second support member includes: A first mounting plate, wherein the first mounting plate is connected to the first support member via an adjusting bolt; A radiation plate, wherein the radiation plate is fixedly connected to the first mounting plate, a spiral groove is formed on the inner wall of the radiation plate, and the heating element is arranged in the spiral groove.

[0013] In some possible embodiments, the first drive assembly and the second drive assembly both include: a second driving member; A lifting member, the lifting member is drivingly connected to the second driving member, one end of the lifting member is a moving end, and the moving end moves along the first direction under the driving of the second driving member; A connecting piece, the connecting piece is fixedly connected to the mobile terminal; A mold column member is fixedly connected to one end of the connecting member away from the lifting member, and the mold column member passes through the adjustment component to abut against the mold component. An air intake channel is also provided in the mold column member, and one end of the air intake channel is located on the end surface of the mold column member away from the connecting member.

[0014] In some possible embodiments, the first drive assembly and the second drive assembly further include: A pressure sensor, the pressure sensor is arranged between the connecting member and the moving end, and a part of the pressure sensor extends into the avoidance hole of the connecting member; In some possible embodiments, the connecting member includes at least four side panels connected in sequence, wherein two of the side panels are arranged opposite to each other along the first direction; The mold column member comprises: A second air intake block, the second air intake block is connected to one of the side plates away from the lifting member and is located on a side of the side plate adjacent to the lifting member, a first groove is formed on a surface of the second air intake block away from the lifting member, and a second air intake port is formed on an outer periphery thereof; A first column, the first column is connected to a side of the side plate away from the second air intake block, the first column has a second through hole, and the second through hole penetrates a surface of the first column opposite to the first direction; a second column, the second column being fixedly connected to an end of the first column away from the connecting member, the second column having a third through hole, the third through hole penetrating a surface of the second column opposite to the first direction; The second air inlet, the first groove, the second through hole and the third through hole are connected to form the air inlet channel.

[0015] In some possible embodiments, the first drive assembly and the second drive assembly further include: a second fixing plate, the second fixing plate being disposed below the second driving member and supporting the second driving member; a second mounting plate, the second mounting plate being arranged on a side of the connecting member and being fixedly connected to the frame, the second mounting plate having a guide rail extending along the first direction, and the connecting member sliding along the guide rail; A positioning device, the positioning device is arranged on the second mounting plate to obtain the position of the connecting member; And / or, a third mounting plate, the third mounting plate is arranged below the lifting member to support the lifting member, and a surface of the third mounting plate facing away from the lifting member is formed with relatively arranged convex strips.

[0016] In some possible embodiments, the mold assembly includes: A lower die, wherein a flange is provided on the outer periphery of the lower die; A positioning sleeve, which is sleeved outside the lower mold and located on the flange, and a venting through hole is provided on the side of the positioning sleeve; An upper die is located in the positioning sleeve and is buckled on the lower die. The surfaces opposite to each other of the upper die and the lower die are respectively formed with protrusions and recesses.

[0017] In some possible embodiments, the molding apparatus further includes a core fixing assembly, wherein the core fixing assembly is configured to place the glass preform in the recessed portion of the lower mold; The core fixing assembly comprises: A suction pen fixing member, wherein one end of the suction pen fixing member facing the lower mold has a first positioning groove, and the first positioning groove accommodates the positioning sleeve; A vacuum suction pen, wherein the vacuum suction pen is inserted into the suction pen fixing member and is fixedly connected to the suction pen fixing member, wherein one end of the vacuum suction pen facing the lower mold has a buffer pad, and a vacuum pipe is further provided in the vacuum suction pen, and one end of the vacuum pipe extends to the buffer pad; A vacuum air pipe, one end of which is connected to an end of the vacuum pipe away from the buffer pad, and the other end of which is configured to be connected to an air supply device.

[0018] In some possible embodiments, the molding device further includes: A second horizontal plate, the second horizontal plate is fixedly connected to the frame and is located below the adjustment assembly; A third air intake block, the third air intake block is arranged on a side of the second horizontal plate away from the mold assembly and is fixedly connected to the second horizontal plate, and a third air intake port is opened on a side of the third air intake block; a second guide seal, the second guide seal being arranged on a side of the third air intake block away from the second horizontal plate and being fixedly connected to the third air intake block; A second cooling plate, the second cooling plate is arranged on a side of the second horizontal plate adjacent to the mold assembly and is fixedly connected to the second horizontal plate, the second cooling plate abuts against the second end of the sealing cover, and a second cooling channel is arranged in the second cooling plate; The second through hole penetrates the second horizontal plate, the third air inlet block, the second guide seal and the second cooling plate, and is connected to the third air inlet. The second guide seal circumferentially seals the first drive assembly.

[0019] The molding equipment provided in the embodiment of the present application includes a frame, and a first drive assembly, a second drive assembly, an adjustment assembly and a mold assembly arranged on the frame. The mold assembly is arranged on the first drive assembly, and the second drive assembly is arranged on the side of the mold assembly away from the first drive assembly. The first drive assembly and the second drive assembly are close to each other along the first direction so as to respectively press the two ends of the mold assembly, or the first drive assembly and the second drive assembly are away from each other along the first direction. Since both the first drive assembly and the second drive assembly can be moved, the double-sided molding of the mold assembly can be realized, and the position and pressure of the first drive assembly and the second drive assembly can be controlled, thereby improving the uniformity of the force on both sides of the glass preform, thereby improving the surface dimensional accuracy and optical properties of the molded product, reducing residual stress, improving the chemical stability and mechanical properties of the molded product, and improving the yield of the molded product. The adjustment assembly includes a vacuum chamber and a heating element, the mold assembly is located in the vacuum chamber, and the heating element adjusts the temperature in the vacuum chamber. The heating element can be used to uniformly heat the mold assembly so that the cavity space temperature distribution of the mold assembly is uniform. Molding is carried out in a stable temperature and gas atmosphere. The geometric axis of the molded product is less eccentric to the optical axis. The designed curved surface of the mold component is not much different from the actual contour curved surface of the molded product. The surface accuracy error of the molded product will not exceed the allowable error. The molded product has good optical uniformity, good optical performance and high yield.

[0020] In addition to the technical problems solved by the embodiments of the present application, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the molding equipment provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 An overall schematic diagram of the molding equipment provided in the embodiment of the present application; Figure 2 An internal schematic diagram of a molding device provided in an embodiment of the present application; Figure 3 An overall cross-sectional view of the molding device provided in an embodiment of the present application; Figure 4 for Figure 3 A partial enlarged view of the middle A; Figure 5 for Figure 3 A partial enlarged view of point B in the middle; Figure 6 for Figure 3 A partial enlarged view of point C in the middle; Figure 7 A schematic diagram of a heating element provided in an embodiment of the present application; Figure 8 A schematic diagram of an adjustment component provided in an embodiment of the present application; Fig. 9 A cross-sectional view of an adjustment assembly provided in an embodiment of the present application; Fig.10 A schematic diagram of a first drive assembly provided in an embodiment of the present application; Fig.11 A schematic diagram of a second driving assembly in one direction provided in an embodiment of the present application; Fig.12 A schematic diagram of another direction of the second driving assembly provided in an embodiment of the present application; Fig.13 A schematic diagram of the position of the centering assembly provided in an embodiment of the present application; Fig.14 A cross-sectional view of a core fixing assembly provided in an embodiment of the present application.

[0023] Description of reference numerals: 1-cover plate; 2-flow meter; 3-regulating valve; 4-visible window; 5-third column; 6-foot cup; 7-first drive assembly; 8-second drive assembly; 9-second drive member; 10-coupling; 11-lifting member; 12-third mounting plate; 13-convex strip; 14-pressure sensor; 15-connecting member; 16-second air intake block; 17-third fixed plate; 18-third guide seal; 19-first column; 20-second column; 21-second mounting plate; 22-second reinforcement rib; 23-guide rail; 24-positioning device; 25-second fixed plate; 26-horizontal plate; 27-first vertical plate; 28-rodless cylinder; 29-buffer; 30-second vertical plate; 31-first reinforcement rib; 32-first horizontal plate; 33-first guide seal; 34-first air intake block; 3 5-adjusting bolt; 36-first mounting plate; 37-scale; 38-cooling element; 39-first radiation screen; 40-sealing cover; 41-heating element; 42-second radiation screen; 43-first cooling plate; 44-first fixing plate; 45-sealing ring; 46-main body; 47-lead-out end; 48-lower mold; 49-upper mold; 50-positioning sleeve; 51-glass preform; 52-vacuum suction pen; 53-suction pen fixing piece; 54-vacuum air pipe; 55-locking nut; 56-base; 57-second horizontal plate; 58-cover plate; 59-third air inlet block; 60-second guide seal; 61-second cooling plate; 62-pad; 63-first air inlet; 64-second air inlet; 65-third air inlet; 66-interface; 67-temperature sensor; 68-air pipe joint. DETAILED DESCRIPTION

[0024] The yield rate of the molded products of the molding equipment in the related art is low. The reason is that the molding equipment is usually single-sided molding, that is, one side is fixed and the other side moves, or only the upper mold / lower mold moves. In the molding process, glass is amorphous, and the upper and lower surfaces of the glass preform are subjected to different molding pressures during the closing of the upper and lower molds, which makes the upper and lower surfaces of the molded glass products different in surface accuracy, reducing the yield rate. The molding equipment usually uses two semi-circular multi-lamp infrared or heating rods or electromagnetic induction heating, which has poor temperature uniformity and uneven local heating. The molded products are prone to eccentricity and uneven edge thickness, which affects the uniformity of the finished product size and also reduces the yield rate.

[0025] In addition, the glass preform is usually placed on the lower mold manually. Since the upper and lower surfaces of the glass preform are spherical, and the upper and lower molds are aspherical, the glass preform contacts the upper and lower molds at points, which is prone to eccentric placement, further reducing the yield of the molded product.

[0026] To this end, an embodiment of the present application provides a molding device including a frame, and a first drive assembly, a second drive assembly, an adjustment assembly and a mold assembly arranged on the frame. The mold assembly is arranged on the first drive assembly, and the second drive assembly is arranged on the side of the mold assembly away from the first drive assembly. The first drive assembly and the second drive assembly are close to each other along the first direction so as to respectively press the two ends of the mold assembly, or the first drive assembly and the second drive assembly are away from each other along the first direction. Since both the first drive assembly and the second drive assembly can be moved, double-sided molding of the mold assembly can be achieved, and the position and pressure of the first drive assembly and the second drive assembly can be controlled, thereby improving the uniformity of the force on both sides of the glass preform, thereby improving the surface dimensional accuracy and optical performance of the molded product, reducing residual stress, improving the chemical stability and mechanical properties of the molded product, and improving the yield of the molded product.

[0027] The adjustment component includes a vacuum chamber and a heating element. The mold component is located in the vacuum chamber, and the heating element adjusts the temperature in the vacuum chamber. The heating element can be used to evenly heat the mold component so that the temperature distribution of the cavity space of the mold component is uniform. Molding in a stable temperature and gas atmosphere, the geometric axis of the molded product is less eccentric to the optical axis, the design surface of the mold component is not much different from the actual contour surface of the molded product, the surface accuracy error of the molded product will not exceed the allowable error, and the molded product has good optical uniformity, good optical performance, and high yield.

[0028] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0029] The embodiment of the present application provides a molding device, which can be used to manufacture glass lenses. The materials of various structures of the molding device can be selected as needed to achieve a lightweight design of the molding device.

[0030] See also Figures 1 to 14 The molding device includes a frame, and a first drive assembly 7, a second drive assembly 8, an adjustment assembly and a mold assembly arranged on the frame. The frame is used to support the first drive assembly 7, the second drive assembly 8, the adjustment assembly and the mold assembly, etc. The first drive assembly 7 and the second drive assembly 8 are used to move against the mold assembly to mold the glass preform 51 in the mold assembly. The adjustment assembly is used to provide a vacuum environment for the mold assembly and adjust the temperature in the mold assembly.

[0031] Among them, Figure 2 As shown, the frame includes a plurality of third columns 5, which may be square, to ensure the strength and stability of the molding equipment. Exemplarily, the frame includes four third columns 5, so that the frame as a whole is a rectangular parallelepiped. In order to further improve the stability of the frame, the frame also includes a cross column arranged between two adjacent third columns 5, which may be square, and the two ends of the cross column are respectively welded to the corresponding two third columns 5.

[0032] Exemplarily, the frame includes multiple cross columns (e.g., eight), and the multiple cross columns are divided into two cross column groups. The two cross column groups are arranged at intervals along the extension direction of the third columns 5. The cross columns in each cross column group are fixed in sequence between two adjacent third columns 5, so that the cross columns in the same group are basically arranged along the circumferential direction of the multiple third columns 5.

[0033] The rack further includes a bottom plate and a top plate respectively arranged at both ends of the plurality of third columns 5, that is, the top plate and the bottom plate are arranged opposite to each other, and the third columns 5 and the top plate and the bottom plate are welded or connected by threaded connectors, etc. The top plate and the bottom plate may be flat plates, and the top plate and the bottom plate may also be flush with the corresponding edges of the third columns 5 to reduce the space occupied by the rack.

[0034] The bottom plate and the top plate support and fix the first drive assembly 7 and the second drive assembly 8 respectively to prevent the first drive assembly 7 and the second drive assembly 8 from shaking on the frame. Exemplarily, the first drive assembly 7 is mounted on the bottom plate, the second drive assembly 8 is mounted on the top plate, the adjustment assembly is mounted on the upper part of the frame, and the mold assembly is mounted inside the adjustment assembly. The frame also includes a plurality of foot cups 6 located below the bottom plate and opposite to the column 5. For example, the foot cups 6 can have four foot cups, and the foot cups 6 can be heavy-duty and have good load-bearing capacity. Based on ergonomics, the foot cups 6 can be used to achieve fine adjustment of the height.

[0035] In order to isolate and protect the structure inside the rack, such as Figure 1 As shown, the rack further includes a cover plate 1, which is connected to the outside of the third column 5 and connected between the top plate and the bottom plate. The cover plate 1 can be a sheet metal part, and its material includes Q235. The outer surface of the cover plate 1 is painted to prevent oxidation and rust. The outer side of the cover plate 1 refers to the side of the cover plate 1 away from the third column 5 (or away from the second horizontal plate 57).

[0036] The cover plate 1 is also provided with a visual window 4, in which a brown acrylic plate is provided, through which the entire molding process of the molding equipment can be observed, including the opening and closing of the sealing cover 40 and the heating element 41. The cover plate 1 can also be provided with a flow meter 2 and a regulating valve 3, the flow meter 2 can monitor the instantaneous change of the nitrogen flow supplied to the molding equipment, and the regulating valve 3 can adjust the nitrogen flow supplied to the molding equipment. Of course, the cover plate 1 can also be provided with other structures, for example, the cover plate 1 is provided with an operation panel to realize human-computer interaction with the molding equipment, so that the molding equipment operation is simpler and more humane, the molding equipment has strong stability, and the yield rate of the molded finished product is high.

[0037] Continue reading Figures 1 to 14 The mold assembly is arranged on the first drive assembly 7, and the second drive assembly 8 is arranged on the side of the mold assembly away from the first drive assembly 7, so that the mold assembly can be located between the first drive assembly 7 and the second drive assembly 8. The mold assembly and the first drive assembly 7 can be detachably connected or not connected, that is, the mold assembly can be directly placed on the first drive assembly 7, and there is no need to fix the mold assembly to the first drive assembly 7.

[0038] Among them, Fig.10 and Fig.14 As shown, the mold assembly includes a lower mold 48, a positioning sleeve 50 and an upper mold 49. The lower mold 48 is arranged on the first driving assembly 7, that is, the lower mold 48 always keeps in contact with the first driving assembly 7. A flange is arranged on the outer periphery of the lower mold 48, for example, one end of the lower mold 48 adjacent to the first driving assembly 7 has a flange to support the positioning sleeve 50.

[0039] The positioning sleeve 50 is sleeved outside the lower mold 48 and is located on the flange. The side of the positioning sleeve 50 is provided with an exhaust hole to exhaust and achieve vacuum during the molding process to ensure the quality of the molded product. The upper mold 49 is located in the positioning sleeve 50 and is buckled on the lower mold 48. The upper mold 49 is adjacent to the second driving assembly 8. The surfaces opposite to the upper mold 49 and the lower mold 48 are both formed with protrusions and recesses. The recess is used to accommodate the glass preform 51, and the protrusion is used to achieve the molding of the molded product.

[0040] Among them, by adjusting the material of the mold component, it can meet the processing requirements of large-sized, higher-melting-point aspheric optical lenses. The mold is highly replaceable and can be customized to meet different optical demand scenarios, thus expanding different optical application fields.

[0041] Continue reading Figures 1 to 14 , the first drive assembly 7 and the second drive assembly 8 approach or move away from each other along a first direction, and the first direction is a vertical direction ( Figure 2 and Figure 3The first drive assembly 7 and the second drive assembly 8 are in the Z direction as shown). When the first drive assembly 7 and the second drive assembly 8 are close to each other along the first direction, the first drive assembly 7 and the second drive assembly 8 can be pressed against the two ends of the mold assembly respectively, specifically, the first drive assembly 7 is pressed against the lower mold 48, and the second drive assembly 8 is pressed against the upper mold 49. When the first drive assembly 7 and the second drive assembly 8 are away from each other along the first direction, the space between the first drive assembly 7 and the second drive assembly 8 is increased, and the mold assembly can be taken and placed.

[0042] In this way, the molding device is double-sided molding, that is, the first drive assembly 7 and the second drive assembly 8 can both move. Considering the creep and stress relaxation of glass in a high-temperature molten state, and through the precise control of the first drive assembly 7 and the second drive assembly 8, while accurately controlling the size and thickness, the uniformity of the force on both sides of the glass preform is improved, the surface size accuracy and optical performance are improved, the residual stress is reduced, and the chemical stability and mechanical properties of the molded product are improved.

[0043] Continue reading Figures 1 to 14 The regulating component includes a vacuum chamber and a heating element 41. The mold assembly is located in the vacuum chamber, and the heating element 41 adjusts the temperature in the vacuum chamber. The heating element 41 spirally surrounds the mold assembly, so that the mold assembly can be evenly heated, so that the temperature distribution of the cavity space of the mold assembly is uniform. Molding in a stable temperature and gas atmosphere, the geometric axis of the molded product is less eccentric to the optical axis, the designed curved surface of the mold assembly is not much different from the actual contour curved surface of the molded product, the surface accuracy error of the molded product will not exceed the allowable error, and the molded product has good optical uniformity and good optical performance.

[0044] like Figure 7 As shown, the heating element 41 includes an infrared lamp tube, which includes a main body 46 and two lead-out ends 47 respectively connected to the two ends of the main body 46. The main body 46 is spiral, and the two lead-out ends 47 are arranged at intervals on the same side of the outer periphery of the main body 46. Compared with the existing two semi-annular multi-lamp infrared or heating rods or electromagnetic induction heating, the lead-out ends 47 in the embodiment of the present application are arranged at both ends as tube risers and are located on the same side of the outer periphery of the main body 46. It will not affect the uniformity of the heating temperature, and the mold assembly and the glass preform 51 are heated evenly, and thermal stress is not easy to generate. At the same time, the temperature difference at the multi-lamp tube interface 66 is reduced on the horizontal plane, and the uniformity of the heating temperature is improved, which is beneficial to improve the yield of the molded product. The above-mentioned form of infrared lamp tube can be accurately within the tolerance range of ±0.1°C, and is easy to lead out and connect.

[0045] like Figure 5 , Figure 8 and Fig. 9As shown, the adjustment component also includes a first driving member, a first supporting member, a sealing cover 40, a second supporting member and a cooling member 38. Among them, the first driving member is fixedly connected to the frame, the first supporting member is arranged beside the first driving member, and is in transmission connection with the first driving member, and the first supporting member has a first through hole for the second driving assembly 8 to pass through, and is sealed and connected with the second driving assembly 8. The sealing cover 40 is fixed and sealed to the first supporting member, a vacuum chamber is arranged in the sealing cover 40, and the vacuum chamber extends to the two opposite ends of the sealing cover 40 along the first direction to form an opening, and the opening is connected to the first through hole. The second supporting member is sleeved outside the sealing cover 40, connected to the first supporting member, and moves relative to the first supporting member. The heating member 41 is arranged on the inner wall of the second supporting member, and the cooling member 38 is arranged on the outer wall of the second supporting member.

[0046] The first driving member is used to drive the structure connected thereto to move so as to adjust the position of the sealing cover 40, the heating member 41 and the cooling member 38 relative to the mold assembly. In some possible implementations, the first driving member includes: at least two transverse plates 26, a first vertical plate 27 and a rodless cylinder 28. At least two transverse plates 26 are arranged at intervals along the first direction and are fixedly connected to the frame. The first vertical plate 27 is disposed on one side of the at least two transverse plates 26 and is fixedly connected to the transverse plates 26. The rodless cylinder 28 is disposed on a side of the first vertical plate 27 away from the transverse plate 26 and is fixedly connected to the first vertical plate 27, and the rodless cylinder 28 has an output end, and the output end is fixedly connected to the first support member.

[0047] Specifically, Figure 2 , Figure 8 and Fig. 9 As shown, at least two transverse plates 26 are arranged between two adjacent third columns 5, and the two ends of each transverse plate 26 are respectively connected to the two third columns 5, for example, by welding. At least two transverse plates 26 can be located on the outside of the third columns 5. The first vertical plate 27 is fixed to one side of the transverse plate 26, for example, the inner side, that is, the first vertical plate 27 and the third column 5 are located on the same side of the transverse plate 26. The first vertical plate 27 is connected to each transverse plate 26, for example, by welding, to fix the first vertical plate 27 relative to the frame. Exemplarily, there are two transverse plates 26, and the two transverse plates 26 are evenly fixed to the first vertical plate 27 to improve the stability of the connection of the first vertical plate 27.

[0048] The rodless cylinder 28 is fixedly connected to the first vertical plate 27, and is located on both sides of the first vertical plate 27 with the cross plate 26, so that the rodless cylinder 28 is closer to the middle of the frame. The rodless cylinder 28 has an output end, which can move along the first direction, and the output end is also fixedly connected to the first support member to drive the first support member to move along the first direction. The rodless cylinder 28 can be a rodless cylinder 28 with a guide rail 23.

[0049] In some possible examples, the first driving member further includes: at least two buffer members 29, wherein the two buffer members 29 are arranged at two opposite ends of the rodless cylinder 28 along the first direction, and a first support member is arranged between the two buffer members 29. The buffer member 29 can be fixed on the rodless cylinder 28 or on the first vertical plate 27, and the rodless cylinder 28 has a buffer member 29 at two opposite ends along the first direction, respectively, and the first support member is between the two buffer members 29, and is used for upper and lower limit adjustment and buffering of the rodless cylinder 28, while reducing noise. The buffer member 29 has elasticity at one end facing the first support member, such as rubber, to achieve buffering.

[0050] like Figure 2 , Figure 8 and Fig. 9 As shown, the first support member includes a second vertical plate 30, a first horizontal plate 32, a first air intake block 34, a first guide seal 33, a first cooling plate 43 and a first fixed plate 44. The second vertical plate 30 is connected to the first driving member and moves along the first direction under the drive of the first driving member; the first horizontal plate 32 is arranged on the side of the second vertical plate 30 away from the first driving member and is fixedly connected to the second vertical plate 30; the first air intake block 34 is arranged on the first side of the first horizontal plate 32 along the first direction and is fixedly connected to the first horizontal plate 32, and a first air intake port 63 is opened on the side of the first air intake block 34.

[0051] The first guide seal 33 is arranged on a side of the first air intake block 34 away from the first horizontal plate 32, and is fixedly connected to the first air intake block 34; the first cooling plate 43 is arranged on the second side of the first horizontal plate 32 along the first direction, and is fixedly connected to the first horizontal plate 32, and a first cooling channel is arranged in the first cooling plate 43; the first fixed plate 44 is sleeved on the outside of the sealing cover 40, and is fixedly connected to the first cooling plate 43, and the first end of the sealing cover 40 is sandwiched between the first fixed plate 44 and the first cooling plate 43; the first through hole passes through the first horizontal plate 32, the first air intake block 34, the first guide seal 33, the first cooling plate 43 and the first fixed plate 44, and is connected to the first air inlet 63, and the first guide seal 33 seals the second drive assembly 8 circumferentially.

[0052] Specifically, the second vertical plate 30 is fixedly connected to the output end of the rodless cylinder 28, for example, connected by a threaded connector. The second vertical plate 30 serves as a mounting plate for the rodless cylinder 28 and can move along the first direction under the drive of the rodless cylinder 28. The second vertical plate 30 is located at one end of the rodless cylinder 28 away from the first vertical plate 27 and is opposite to the first vertical plate 27 to reduce the size of the first driving member and the first supporting member along the first direction. The first horizontal plate 32 is disposed on the side of the second vertical plate 30 away from the first driving member and is fixedly connected to the second vertical plate 30, for example, the first horizontal plate 32 and the second vertical plate 30 are an integral structure or connected by a threaded connector. Among them, the first horizontal plate 32 is located at one end of the second vertical plate 30 away from the second horizontal plate 57.

[0053] In order to improve the stability of the connection between the first horizontal plate 32 and the second vertical plate 30, the first support member further includes a first reinforcing rib 31, which is disposed between the first horizontal plate 32 and the second vertical plate 30 and abuts against the first horizontal plate 32 and the second vertical plate 30. Exemplarily, two first reinforcing ribs 31 are provided, and the two first reinforcing ribs 31 are respectively located at two ends of the second vertical plate 30 along the second direction, the second direction is perpendicular to the first direction, and the first reinforcing rib 31 may be L-shaped.

[0054] The first air inlet block 34 is disposed on a side of the first horizontal plate 32 away from the mold assembly. The first side of the first horizontal plate 32 along the first direction is Figure 8 The upper side shown. A first air inlet 63 is provided on the side of the first air inlet block 34, and the first air inlet 63 is connected to the first air inlet pipe to introduce nitrogen from the side of the first air inlet block 34 into the cavity environment where the mold assembly is located. The first guide seal 33 is fixedly arranged on the side of the first air inlet block 34 away from the first horizontal plate 32, and the first guide seal 33 is against the outer periphery of the first drive assembly 7 to achieve circumferential sealing between the first drive assembly 7. Furthermore, grease can be filled between the first guide seal 33 and the first drive assembly 7 to improve the sealing effect.

[0055] In some possible implementations, the first guide seal 33 and the first air intake block 34 are mutually locked by threaded nesting. For example, a boss is formed at one end of the first air intake block 34 away from the first horizontal plate 32, the size of the boss is smaller than the size of other positions of the first air intake block 34, the boss is provided with an external thread, and a second groove is formed at one end of the first guide seal 33 facing the first air intake block 34, the side wall of the second groove is correspondingly provided with an external thread, the second groove is sleeved on the boss, and is threadedly connected to the boss.

[0056] The first cooling plate 43 is arranged on a side of the first horizontal plate 32 away from the first air intake block 34, that is, the second side of the first horizontal plate 32 along the first direction refers to a side of the first horizontal plate 32 adjacent to the second horizontal plate 57, and the first cooling plate 43 and the first air intake block 34 are respectively located on both sides of the first horizontal plate 32. The first cooling plate 43 is also fixedly connected to the first horizontal plate 32, for example, the first cooling plate 43 is connected to the first horizontal plate 32 by a threaded connector. In some possible implementations, the first cooling plate 43 and the first air intake block 34 are connected to the first horizontal plate 32 by the same threaded connector to simplify the connection structure of the first cooling plate 43, the first air intake block 34 and the first horizontal plate 32.

[0057] The first cooling plate 43 is provided with a first cooling channel, and the first cooling channel contains a coolant to cool the first horizontal plate 32, so as to prevent the first horizontal plate 32 and the sealing ring 45 from being overheated due to the influence of the heating element 41. For example, the first cooling plate 43 is provided with a first annular groove on the surface facing the first horizontal plate 32, and the first annular groove is sleeved outside the first through hole, and the first annular groove forms the first cooling channel. For another example, the outer periphery of the first cooling plate 43 is also provided with an interface 66, and the interface 66 is connected to the first annular groove, and the interface 66 and the first annular groove form the first cooling channel.

[0058] The first cooling plate 43 has two second annular grooves on its surface facing the first horizontal plate 32. The two second annular grooves are located on the inner side and the outer side of the first annular groove, respectively, that is, the second annular groove, the first annular groove and the second annular groove are arranged in sequence. A sealing ring 45 is arranged in the second annular groove to seal the first cooling plate 43 and the first horizontal plate 32 to prevent leakage of the coolant.

[0059] The first fixing plate 44 is located on a side of the first cooling plate 43 away from the first horizontal plate 32. For example, the first fixing plate 44 has two parts that can be assembled to be sleeved outside the sealing cover 40. The first fixing plate 44 is fixedly connected to the first cooling plate 43. For example, the first fixing plate 44, the first cooling plate 43, the first horizontal plate 32 and the first air intake block 34 are connected by the same threaded connector. The first end of the sealing cover 40 is sandwiched between the first fixing plate 44 and the first cooling plate 43 to fix the sealing cover 40 between the first fixing plate 44 and the first cooling plate 43.

[0060] Exemplarily, a vacuum chamber is provided in the sealing cover 40, and the vacuum chamber extends to two opposite ends of the sealing cover 40 along the first direction to form an opening, and the two ends are respectively the first end and the second end of the sealing cover 40. The first end of the sealing cover 40 has an outer edge, and a third groove is provided on the side of the first cooling plate 43 facing the first fixing plate 44, and the outer edge of the first end of the sealing cover 40 is located in the third groove. The first fixing plate 44 is sleeved outside the sealing cover 40 and abuts against the outer edge of the first end of the sealing cover 40 to fix the outer edge in the third groove. Of course, the second end of the sealing cover 40 may also have an outer edge, and the sealing cover 40 may be a glass cover.

[0061] The outer peripheral surface of the outer edge of the first end of the sealing cover 40 can be against the inner wall of the third groove, and the first through hole of the first fixing plate 44 is against the outer peripheral surface of the sealing cover 40. The surface of the first cooling plate 43 facing the sealing cover 40 is also provided with a third annular groove, and the third annular groove is sleeved outside the first through hole. A sealing ring 45 is provided in the third annular groove to seal between the sealing cover 40 and the first cooling plate 43, so as to realize vacuuming in the sealing cover 40.

[0062] The first horizontal plate 32, the first air intake block 34, the first guide seal 33, the first cooling plate 43 and the first fixed plate 44 are all penetrated by first through holes, and the first through holes are also connected to the vacuum chamber of the sealing cover 40. The size of the first through hole of the first air intake block 34 can be larger than the size of the first through holes on other structures to facilitate the introduction of nitrogen. The size of the first through hole of the first guide seal 33 can be smaller than the size of the first through holes on other structures to ensure that the first guide seal 33 and the second driving assembly 8 are sealed.

[0063] In order to achieve the vacuum chamber can be evacuated, such as Figure 6 As shown, the molding device also includes: a second horizontal plate 57, a third air intake block 59, a second guide seal 60 and a second cooling plate 61. The third air intake block 59 is arranged on the side of the second horizontal plate 57 away from the mold assembly and is fixedly connected to the second horizontal plate 57. A third air intake port 65 is provided on the side of the third air intake block 59. The second guide seal 60 is arranged on the side of the third air intake block 59 away from the second horizontal plate 57 and is fixedly connected to the third air intake block 59. The second cooling plate 61 is arranged on the side of the second horizontal plate 57 adjacent to the mold assembly and is fixedly connected to the second horizontal plate 57. The second cooling plate 61 abuts against the second end of the sealing cover 40, and a second cooling channel is arranged in the second cooling plate 61. The fourth through hole penetrates the second horizontal plate 57, the third air intake block 59, the second guide seal 60 and the second cooling plate 61, and is connected to the third air intake port 65. The second guide seal 60 seals the second drive assembly 8 circumferentially.

[0064] The second horizontal plate 57 is fixedly connected to the frame and is located below the adjustment assembly. The second horizontal plate 57 is used to cooperate with the adjustment assembly to achieve sealing and vacuum of the mold assembly. The second horizontal plate 57 is located between the top plate and the bottom plate. The second horizontal plate 57 can be fixedly connected to the second column 20 (for example, by welding). The second horizontal plate 57 can also be fixedly connected to the cross column (for example, by welding). A cover plate 58 can also be buckled on the second horizontal plate 57. The cover plate 58 and the second horizontal plate 57 enclose a cavity to accommodate other structures. By setting the cover plate 58, part of the structure can be shielded to avoid exposure.

[0065] The third air inlet block 59 is disposed on a side of the second horizontal plate 57 away from the mold assembly ( Figure 6 As shown in the lower side, a third air inlet 65 is provided on the side of the third air inlet block 59, and the third air inlet 65 is connected to the third air inlet pipe to introduce nitrogen from the side of the third air inlet block 59 into the cavity environment where the mold assembly is located. The second guide seal 60 is fixedly arranged on the side of the third air inlet block 59 away from the second horizontal plate 57, and the third guide seal 18 is against the outer periphery of the second drive assembly 8 to achieve circumferential sealing between the first drive assembly 7. Furthermore, grease can also be filled between the second guide seal 60 and the first drive assembly 7 to improve the sealing effect. Among them, the second guide seal 60 and the third air inlet block 59 can be mutually locked by threaded nesting, and the structure and connection method of the first guide seal 33 and the first air inlet block 34 can be referred to, and will not be repeated here.

[0066] The second cooling plate 61 is arranged on the side of the second horizontal plate 57 away from the third air intake block 59, and the second cooling plate 61 and the third air intake block 59 are respectively located on both sides of the second horizontal plate 57. A second cooling channel is arranged in the second cooling plate 61, and a coolant is arranged in the second cooling channel to cool the second horizontal plate 57 to prevent the second horizontal plate 57 and the sealing ring 45 from being affected by the heating element 41 and having an overly high temperature. For example, a fourth annular groove is provided on the surface of the second cooling plate 61 facing the second horizontal plate 57, and the fourth annular groove is sleeved outside the fourth through hole, and the fourth annular groove forms a second cooling channel. For another example, an interface 66 is also provided on the outer periphery of the second cooling plate 61, and the interface 66 is connected to the fourth annular groove, and the interface 66 and the fourth annular groove form a second cooling channel.

[0067] Among them, a pad 62 is also provided between the second cooling plate 61 and the second horizontal plate 57 to adjust the height of the second cooling plate 61 to achieve contact with the sealing cover 40. For example, the pad 62, the second horizontal plate 57 and the third air intake block 59 can be connected by the same threaded connector to simplify the structure. The pad 62 is connected to the second cooling plate 61 by another threaded connector. Alternatively, the pad 62 can be an integral structure with the second horizontal plate 57, and the second cooling plate 61 and the third air intake block 59 are respectively fixed to the second horizontal plate 57 by threaded connectors.

[0068] The surface of the second cooling plate 61 facing the second horizontal plate 57 is further provided with two fifth annular grooves, which are respectively located on the inner side and the outer side of the fourth annular groove, that is, the fifth annular groove, the fourth annular groove and the fifth annular groove are arranged in sequence. A sealing ring 45 is arranged in the fifth annular groove to seal the second cooling plate 61 and the adjacent parts to prevent leakage of the coolant.

[0069] The surface of the second cooling plate 61 facing the sealing cover 40 is also provided with a sixth annular groove, and the sixth annular groove is sleeved outside the fourth through hole. A sealing ring 45 is provided in the sixth annular groove to seal between the sealing cover 40 and the second cooling plate 61, so as to realize vacuuming in the sealing cover 40. The second horizontal plate 57, the third air intake block 59, the second guide seal 60 and the second cooling plate 61 are all penetrated by the fourth through hole, and the fourth through hole is also connected to the vacuum chamber of the sealing cover 40. In the example where a pad 62 is provided between the second cooling plate 61 and the second horizontal plate 57, the fourth through hole also penetrates the pad 62.

[0070] Among them, when the second end of the sealing cover 40 abuts against the second cooling plate 61, due to the sealed connection between the first guide seal 33 and the second driving assembly 8, and the sealed connection between the second guide seal 60 and the first driving assembly 7, a closed space can be formed between the first through hole, the vacuum cavity and the fourth through hole, thereby achieving vacuum extraction of the closed space, so that the mold assembly is heated in a vacuum environment, thereby improving the quality of the molded product.

[0071] Continue reading Figure 8 and Fig. 9 The second support member includes a first mounting plate 36 and a radiation plate. The first mounting plate 36 is connected to the first support member by an adjusting bolt 35. The radiation plate is fixedly connected to the first mounting plate 36. A spiral groove is opened on the inner wall of the radiation plate, and the heating element 41 is arranged in the spiral groove.

[0072] Specifically, the first mounting plate 36 is sleeved outside the sealing cover 40, and at least one adjusting bolt 35 is connected between the first mounting plate 36 and the first horizontal plate 32. By setting the adjusting bolt 35, the relative position between the first mounting plate 36 and the first support member can be adjusted to adjust the relative height between the heating element 41 in the radiation plate and the sealing cover 40, thereby adjusting the height of the heating element 41 relative to the mold assembly to ensure that the mold assembly is in the middle of the heating element 41 during the molding process to achieve uniform heating of the mold assembly. Furthermore, the first support member (such as the first fixing plate 44) can also be provided with a scale 37 to determine the distance between the first mounting plate 36 and the first support member, so as to more accurately control the position of the heating element 41 relative to the sealing cover 40.

[0073] The radiation plate is fixedly connected to one end of the first mounting plate 36 away from the first horizontal plate 32, for example, by welding. The adjusting bolt 35 can pass through the radiation plate to extend to the inside of the radiation plate. The radiation plate can include a first radiation screen 39 and a second radiation screen 42, which are assembled to form the radiation plate, so as to achieve the radiation plate being sleeved on the outside of the sealing cover 40.

[0074] The inside of the radiation plate is provided with a spiral groove to accommodate the heating element 41, so that the heating element 41 is relatively fixed to the radiation plate to prevent the heating element 41 from falling. The outer wall of the radiation plate is provided with a cooling element 38, for example, welded, and the cooling element 38 can be a cooling copper tube, and the cooling copper tube is externally connected to play a role in cooling and protecting the heating element 41. The number and arrangement of the cooling copper tubes are not limited. For example, there are two cooling copper tubes, which are respectively located on the first radiation screen 39 and the second radiation screen 42. The cooling copper tubes on the first radiation screen 39 and the second radiation screen 42 are arranged in a serpentine shape to increase the total length of the cooling copper tube. The cooling copper tube can be connected to the above-mentioned second cooling channel and the first cooling channel to form a coolant passage.

[0075] See also Figure 3 , Figure 4 , Figures 10 to 12 The first driving assembly 7 and the second driving assembly 8 each include: a second driving member 9, a lifting member 11, a connecting member 15 and a mold column member. The lifting member 11 is connected to the second driving member 9 in a transmission manner, one end of the lifting member 11 is a moving end, and the moving end moves along the first direction under the drive of the second driving member 9. The connecting member 15 is fixedly connected to the moving end, and the mold column member is fixedly connected to one end of the connecting member 15 away from the lifting member 11. The mold column member passes through the adjustment assembly to abut against the mold assembly. An air inlet channel is also provided in the mold column member, and one end of the air inlet channel is located on the end surface of the mold column member away from the connecting member 15.

[0076] Among them, the second driving member 9 can be a driving motor, such as a servo motor. The second driving member 9 and the lifting member 11 can be connected by a coupling 10 to transmit the torque of the second driving member 9 to the lifting member 11, and the lifting member 11 can be an elevator. Specifically, the output end of the second driving member 9 and the input end of the lifting member 11 are connected with a coupling 10 (such as a high-rigidity diaphragm coupling 10), the output end of the lifting member 11 is a moving end, and the moving end moves along the first direction. A transmission component is connected between the input end and the output end of the lifting member 11 to convert the rotation of the input end of the lifting member 11 into the movement of the output end of the elevator.

[0077] The connecting member 15 is fixedly connected to the mobile end to move synchronously with the mobile end. The connecting member 15 includes at least four side plates connected in sequence, wherein two side plates are arranged opposite to each other along a first direction, such as Fig.10 As shown, at least four side panels are connected end to end in sequence to enclose a through cavity, and the opening of the through cavity is perpendicular to the first direction, so that the side panels can provide support.

[0078] In some possible examples, the first drive assembly 7 and the second drive assembly 8 further include a pressure sensor 14, which is disposed between the connecting member 15 and the mobile end, and part of the pressure sensor 14 extends into the avoidance hole of the connecting member 15. By providing the pressure sensor 14, the thrust of the mobile end on the connecting member 15 can be detected to control the pressure applied by the first drive assembly 7 and the second drive assembly 8 on the mold assembly. The pressure sensor 14 is fixedly connected to the connecting member 15 and the mobile end, respectively, so as to achieve the fixation of the mobile end and the connecting member 15.

[0079] Among them, a side plate of the connecting member 15 close to the lifting member 11 is fixedly connected to the pressure sensor 14, for example, by a threaded connecting member, and the side plate may also be provided with an avoidance hole, and part of the pressure sensor 14 extends into the avoidance hole. A side plate of the connecting member 15 away from the lifting member 11 is fixedly connected to the mold column member, for example, by a threaded connecting member.

[0080] The mold column member is used to abut against the mold assembly, and the mold column member includes a second air inlet block 16, a first column 19, and a second column 20. The second air inlet block 16 is connected to a side plate away from the lifting member 11, and is located on the side of the side plate adjacent to the lifting member 11. The surface of the second air inlet block 16 facing away from the lifting member 11 is provided with a first groove, and a second air inlet port 64 is provided on the periphery. The first column 19 is located on the side of the side plate away from the second air inlet block 16. The first column 19 has a second through hole, and the second through hole passes through the surface of the first column 19 opposite to the first direction. The second column 20 is fixedly connected to the end of the first column 19 away from the connecting member 15. The second column 20 has a third through hole, and the third through hole passes through the surface of the second column 20 opposite to the first direction. The second air inlet port 64, the first groove, the second through hole and the third through hole are connected to form an air inlet channel.

[0081] The second air intake block 16 is disposed between two side panels that are opposite to each other in the first direction, and is fixed to the side panel away from the lifting member 11, for example, by a threaded connector. The first groove in the second air intake block 16 is connected to the second air intake port 64, and the second air intake port 64 can be connected to the second air intake pipe. The first column 19 is connected to the side panel and is located on a side of the side panel away from the second air intake block 16, for example, the first column 19 is threadedly connected to a connection hole that passes through the side panel.

[0082] The first column 19 has a second through hole, which penetrates the surface of the first column 19 opposite to the first direction and is connected to the first groove. The end of the first column 19 away from the connecting member 15 is connected to the second column 20, for example, by a threaded connector. The second column 20 has a third through hole, which penetrates the surface of the second column 20 opposite to the first direction and is connected to the second through hole. In this way, the second air inlet 64, the first groove, the second through hole and the third through hole are connected in sequence to form an air inlet channel.

[0083] The first column 19 and the second column 20 of the first driving assembly 7 sequentially pass through the second guide seal 60, the third air inlet block 59, the second horizontal plate 57 and the second cooling plate 61 to achieve contact with the lower mold 48 of the mold assembly. The second column 20 of the first driving assembly 7 can be located in the sealing cover 40, and the second column 20 of the first driving assembly 7 can be fixed to the lower mold 48 by a threaded connector or not.

[0084] The first column 19 and the second column 20 of the second driving assembly 8 sequentially pass through the first guide seal 33, the first air inlet block 34, the first horizontal plate 32, the first cooling plate 43 and the first fixing plate 44 to achieve contact with the upper die 49 of the mold assembly. The second column 20 of the second driving assembly 8 can be located in the sealing cover 40, and the second column 20 of the second driving assembly 8 can be fixed to the upper die 49 by a threaded connector or not.

[0085] The first drive assembly 7 and the second drive assembly 8 further include a third fixing plate 17 and a third guide seal 18. The third fixing plate 17 is arranged on a side of the connecting member 15 away from the lifting member 11 and is sleeved outside the first column 19. The third fixing plate 17 is fixedly connected to the connecting member 15. For example, the third fixing plate 17 and the second air intake block 16 are fixedly connected to the connecting member 15 through the same threaded connector. The third guide seal 18 is arranged on a side of the third fixing plate 17 away from the connecting member 15 and is sleeved outside the first column 19. The third guide seal 18 is sealed and connected to the first column 19. The third guide seal 18 and the third fixing plate 17 can be connected by threaded nesting, which will not be described in detail here.

[0086] like Figure 5 , Fig.10 and Fig.11 The first drive assembly 7 and the second drive assembly 8 further include a temperature sensor 67, which passes through the second air inlet block 16, passes through the first groove and the second through hole in sequence, and is connected to the mold assembly via the outer side of the second column 20 to measure the temperature of the mold assembly. The temperature sensor 67 of the first drive assembly 7 is connected to the lower mold 48 of the mold assembly, and the temperature sensor 67 of the second drive assembly 8 is connected to the upper mold 49 of the mold assembly.

[0087] The first drive assembly 7 and the second drive assembly 8 further include: a second fixing plate 25, a second mounting plate 21 and a positioning device 24. The second fixing plate 25 is arranged below the second drive member 9 to support the second drive member 9; the second mounting plate 21 is arranged on the side of the connecting member 15 and is fixed relative to the frame, and the second mounting plate 21 has a guide rail 23 extending along the first direction, and the connecting member 15 slides along the guide rail 23; the positioning device 24 is arranged on the second mounting plate 21 to obtain the position of the connecting member 15.

[0088] The second fixing plate 25 is arranged below the second driving member 9 and is fixedly connected to the frame. The second fixing plate 25 can also be fixedly connected to the second driving member 9. The second fixing plate 25 of the first driving assembly 7 is arranged on the bottom plate and is fixedly connected to the bottom plate. The second fixing plate 25 of the second driving assembly 8 is arranged on the top plate and is fixedly connected to the top plate.

[0089] The second mounting plate 21 is disposed beside the connecting member 15, and the second mounting plate 21 can be fixedly connected to the second horizontal plate 57, for example, by a threaded connection. The second mounting plate 21 of the first driving assembly 7 can also be fixedly connected to the second fixing plate 25 of the first driving assembly 7 to improve the stability of the second mounting plate 21 of the first driving assembly 7. The second mounting plate 21 of the second driving assembly 8 and the second fixing plate 25 of the second driving assembly 8 are separated by a top plate.

[0090] The second mounting plate 21 has a guide rail 23 extending in the first direction, and the guide rail 23 may be provided with at least one, so that the connecting member 15 can move in the first direction, guide the connecting member 15, and ensure the moving direction of the connecting member 15. A positioning device 24 may also be provided on the second mounting plate 21, and the positioning device 24 may be a grating ruler to determine the position of the connecting member 15. In other examples, the positioning device 24 may also be provided on other structures, and the embodiments of the present application are not limited thereto.

[0091] Furthermore, the first drive assembly 7 and the second drive assembly 8 further include a second reinforcing rib 22, which is disposed on the second mounting plate 21 and is located outside the connecting member 15. The second reinforcing rib 22 of the first drive assembly 7 is also in contact with the second horizontal plate 57, and the second reinforcing rib 22 of the second drive assembly 8 is also in contact with the top plate. The second reinforcing rib 22 may be L-shaped, and may be an integral structure with the second mounting plate 21.

[0092] The first drive assembly 7 and the second drive assembly 8 further include a third mounting plate 12, which is disposed below the lifting member 11 and supports the lifting member 11. The surface of the third mounting plate 12 facing away from the lifting member 11 is formed with convex strips 13 disposed opposite to each other. Exemplarily, the third mounting plate 12 includes a first plate member and a second plate member located on the side of the first plate member facing away from the lifting member 11. The lifting member 11 is disposed on the first plate member, and two second plates may be provided, and the two second plates are disposed opposite to each other to form the convex strips 13. The second plate member and the first plate member may be an integral structure.

[0093] See also Fig.13 and Fig.14 The molding equipment also includes a core fixing component, which places the glass preform 51 in the recessed portion of the lower mold 48. The core fixing component includes: a suction pen fixing part 53, a vacuum suction pen 52 and a vacuum air pipe 54. The end of the suction pen fixing part 53 facing the lower mold 48 has a first positioning groove, and the first positioning groove accommodates a positioning sleeve 50; the vacuum suction pen 52 is inserted into the suction pen fixing part 53 and is fixedly connected to the suction pen fixing part 53, and the end of the vacuum suction pen 52 facing the lower mold 48 has a buffer pad, and a vacuum pipe is also arranged in the vacuum suction pen 52, and one end of the vacuum pipe extends to the buffer pad; one end of the vacuum air pipe 54 is connected to the end of the vacuum pipe away from the buffer pad, and the other end is configured to be connected to the air supply device.

[0094] Compared with manual placement of the glass preform 51, the use of a vacuum suction pen 52 with a cushion to place and take the glass preform 51 can improve the eccentricity of the glass preform 51 and reduce scratches on the surface of the glass preform 51. Through the cooperation between the positioning sleeve 50 and the suction pen fixing member 53, it can be ensured that the glass preform 51 and the concave part of the lower mold 48 maintain a certain coaxiality, reduce the defects of precision optical components, and improve the yield rate.

[0095] Specifically, the first positioning groove of the suction pen fixing member 53 can position the outer peripheral surface of the positioning sleeve 50. When the suction pen fixing member 53 is placed on the positioning sleeve 50, the top surface of the positioning sleeve 50 limits the suction pen fixing member 53. The suction pen fixing member 53 also includes a second positioning groove, which is located inside the first positioning groove and is used to position the glass preform 51. The suction pen fixing member 53 has a mounting hole, which passes through the suction pen fixing member 53 and is connected to the second positioning groove.

[0096] The vacuum pen 52 is disposed in the mounting hole and is fixedly connected to the mounting hole, for example, by threaded connection. A locking nut 55 is also disposed on the side of the vacuum pen 52 away from the lower mold 48. A vacuum pipe is disposed in the vacuum pen 52, and one end of the vacuum pipe is connected to the vacuum air pipe 54, for example, the vacuum air pipe 54 is connected to the vacuum pen 52 through an air pipe joint 68. The other end of the vacuum pipe extends to a buffer pad, and the material of the buffer pad can be rubber.

[0097] The core assembly further includes a base 56, which is disposed on a second horizontal plate 57. Fig.13 In the orientation shown, the base 56 is located in front of the right side of the second horizontal plate 57. The base 56 also extends outward from the positioning opening of the cover plate 58. The base 56 can be fixedly connected to the second horizontal plate 57. The base 56 can be placed with the lower mold 48 and the positioning sleeve 50.

[0098] The working process of the centering assembly is as follows: Through the positioning of the inner circumference of the second positioning groove of the vacuum suction pen 52, the vacuum is formed by the vacuum air pipe 54, the glass preform 51 is sucked, and the suction pen fixing member 53 that has sucked the glass preform 51 is placed on the positioning sleeve 50, the first positioning groove is sleeved outside the positioning sleeve 50, and the upper surface of the positioning sleeve 50 is limited. The suction pen fixing member 53 is placed in place, the vacuum is broken, and the glass preform 51 is placed in the middle of the concave part of the lower mold 48. The suction pen fixing member 53 is taken out, and the centering placement of the glass preform 51 is completed. The centering assembly is simple to operate, convenient to operate, and highly reliable.

[0099] The molding process of the molding equipment is as follows: The glass preform 51 is placed in the lower mold 48 through the core fixing assembly, and the upper mold 49 is buckled to form a mold assembly. The mold assembly with the glass preform placed is placed on the second column 20 of the first driving assembly 7.

[0100] Under the action of the rodless cylinder 28, the sealing cover 40 and the heating element 41 move downward to a specified position and abut against the second horizontal plate 57 to achieve the sealing performance of the sealing cover 40 and ensure a stable gas atmosphere.

[0101] Cooling liquid is provided, and liquid circulation is realized through the first cooling plate 43, the second cooling plate 61 and the cooling element 38. Based on the sensitivity of glass materials to temperature and the complexity of the ambient temperature during the molding process, the stability of the atmosphere can be guaranteed by the active controllable cooling method, and the temperature can be accurately controlled according to the feedback of the temperature sensor 67, with strong self-regulation ability, while protecting the core components, such as the heating element 41, the sealing ring 45, etc., and extending the service life.

[0102] The first air inlet 63 and / or the third air inlet 65 are used to evacuate the air to achieve the vacuum environment required for molding, and the heating element 41 is turned on for heating. The height of the heating element 41 can be adjusted by adjusting the bolt 35 and the scale 37 so that the mold assembly is in the middle of the heating element 41.

[0103] In the first drive assembly 7, the second drive member 9 transmits torque to the lifting member 11 through the coupling 10 to drive the connecting member 15 to move upward along the guide rail 23, thereby driving the first column 19, the second column 20 and the mold assembly to move upward. At the same time, in the first drive assembly 7, the second drive member 9 transmits torque to the lifting member 11 through the coupling 10 to drive the connecting member 15 to move downward along the guide rail 23, thereby driving the first column 19 and the second column 20 to move downward to achieve the clamping of the upper film 49 and the lower mold 48. The first drive assembly 7 and the second drive assembly 8 control the pressure of the upper film 49 and the lower mold 48 through force sensors, realize high-precision position control through grating rulers, and realize mold temperature feedback through temperature sensors 67. By accurately controlling mold pressure, position, temperature, etc., the dimensional accuracy of the molded product and certain optical properties can be achieved.

[0104] Nitrogen is introduced at least through the second air inlet 64 to cool the molded product. By adjusting the rate of nitrogen, the heat taken away can be controlled, so that the cooling rate of the molded product can be adjusted and controlled.

[0105] In summary, the molding equipment in the embodiment of the present application includes a frame, and a first drive assembly 7, a second drive assembly 8, an adjustment assembly and a mold assembly arranged on the frame. The mold assembly is arranged on the first drive assembly 7, and the second drive assembly 8 is arranged on the side of the mold assembly away from the first drive assembly 7. The first drive assembly 7 and the second drive assembly 8 are close to each other along the first direction so as to respectively press the two ends of the mold assembly, or the first drive assembly 7 and the second drive assembly 8 are away from each other along the first direction. By the first drive assembly 7 and the second drive assembly 8 can be moved, the double-sided molding of the mold assembly can be realized, and the position and pressure of the first drive assembly 7 and the second drive assembly 8 can be controlled, so as to improve the uniformity of the force on both sides of the glass preform, thereby improving the surface dimensional accuracy and optical properties of the molded product, reducing residual stress, improving the chemical stability and mechanical properties of the molded product, and improving the yield of the molded product. The adjustment assembly includes a vacuum chamber and a heating element 41, the mold assembly is located in the vacuum chamber, and the heating element 41 adjusts the temperature in the vacuum chamber. The heating element can be used to uniformly heat the mold assembly so that the temperature distribution of the cavity space of the mold assembly is uniform. Molding is carried out in a stable temperature and gas atmosphere. The geometric axis of the molded product is less eccentric to the optical axis. The designed curved surface of the mold component is not much different from the actual contour curved surface of the molded product. The surface accuracy error of the molded product will not exceed the allowable error. The molded product has good optical uniformity, good optical performance and high yield.

[0106] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0107] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A molding device, characterized in that: include: A frame, and a first drive assembly (7), a second drive assembly (9), an adjustment assembly, and a mold assembly arranged on the frame; The mold assembly is arranged on the first drive assembly (7), the second drive assembly (8) is arranged on a side of the mold assembly away from the first drive assembly (7), the first drive assembly (7) and the second drive assembly (8) are close to each other along a first direction so as to respectively press against two ends of the mold assembly, or the first drive assembly (7) and the second drive assembly (8) are away from each other along the first direction; The regulating component comprises a vacuum chamber and a heating element (41); the mould component is located in the vacuum chamber; and the heating element (41) regulates the temperature in the vacuum chamber.

2. The molding device according to claim 1, characterized in that: The heating element (41) spirally surrounds at least a portion of the mold assembly.

3. The molding device according to claim 2, characterized in that: The heating element (41) comprises an infrared lamp tube; The infrared lamp tube comprises a main body (46) and two lead ends (47) respectively connected to two ends of the main body (46); the main body (46) is spiral-shaped, and the two lead ends (47) are arranged at intervals on the same side of the outer periphery of the main body (46).

4. The molding device according to claim 2, characterized in that: The adjustment component also includes: a first driving member, wherein the first driving member is fixed relative to the frame; a first support member, the first support member being arranged beside the first drive member and being in transmission connection with the first drive member, the first support member having a first through hole for the second drive component (8) to pass through, and being sealingly connected with the second drive component (8); a sealing cover (40), the sealing cover (40) being fixed and sealingly connected to the first support member, the sealing cover (40) being provided with the vacuum chamber, and the vacuum chamber extending to two opposite ends of the sealing cover (40) along the first direction to form openings, the openings being in communication with the first through hole; a second support member, the second support member being sleeved outside the sealing cover (40), connected to the first support member, and movable relative to the first support member, the heating member (41) being arranged on the inner wall of the second support member; A cooling member (38) is arranged on an outer wall of the second support member.

5. The molding device according to claim 4, characterized in that: The first driving member comprises: At least two transverse plates (26), the at least two transverse plates (26) being arranged at intervals along the first direction and fixedly connected relative to the frame; a first vertical plate (27), the first vertical plate (27) being arranged on one side of the at least two horizontal plates (26) and being fixedly connected to the horizontal plates (26); A rodless cylinder (28), the rodless cylinder (28) being arranged on a side of the first vertical plate (27) away from the horizontal plate (26) and being fixedly connected to the first vertical plate (27), the rodless cylinder (28) having an output end, and the output end being fixedly connected to the first support member.

6. The molding device according to claim 5, characterized in that: The first driving member further comprises: At least two buffer members (29), wherein the two buffer members (29) are arranged at two opposite ends of the rodless cylinder (28) along the first direction, and the first support member is arranged between the two buffer members (29).

7. The molding device according to claim 4, characterized in that The first support member comprises: A second vertical plate (30), the second vertical plate (30) being connected to the first driving member and moving along the first direction under the drive of the first driving member; a first horizontal plate (32), the first horizontal plate (32) being arranged on a side of the second vertical plate (30) away from the first driving member and being fixedly connected to the second vertical plate (30); a first air intake block (34), the first air intake block being arranged on a first side of the first horizontal plate (32) along the first direction and being fixedly connected to the first horizontal plate (32), a first air intake port (63) being provided on a side surface of the first air intake block (34); a first guide seal (33), the first guide seal (33) being arranged on a side of the first air intake block (34) away from the first horizontal plate (32) and being fixedly connected to the first air intake block (34); a first cooling plate (43), the first cooling plate (43) being arranged on a second side of the first horizontal plate (32) along the first direction and being fixedly connected to the first horizontal plate (32), and a first cooling channel being arranged in the first cooling plate (43); a first fixing plate (44), the first fixing plate (44) being sleeved outside the sealing cover (40) and fixedly connected to the first cooling plate (43), the first end of the sealing cover (40) being sandwiched between the first fixing plate (44) and the first cooling plate (43); The first through hole passes through the first horizontal plate (32), the first air intake block (34), the first guide seal (33), the first cooling plate (43) and the first fixed plate (44), and is connected to the first air intake port (63). The first guide seal (33) circumferentially seals the second drive assembly (8).

8. The molding device according to claim 4, characterized in that The second support member comprises: A first mounting plate (36), wherein the first mounting plate (36) is connected to the first support member via an adjusting bolt (35); A radiation plate, the radiation plate being fixedly connected to the first mounting plate (36), the inner wall of the radiation plate being provided with a spiral groove, the heating element (41) being arranged in the spiral groove.

9. The molding device according to any one of claims 1 to 8, characterized in that: The first drive assembly (7) and the second drive assembly (8) both comprise: A second driving member (9); A lifting member (11), the lifting member (11) being drivingly connected to the second driving member (9), one end of the lifting member (11) being a moving end, and the moving end moves along the first direction under the drive of the second driving member (9); A connecting piece (15), the connecting piece (15) being fixedly connected to the mobile end; A mold column member, wherein the mold column member is fixedly connected to one end of the connecting member (15) away from the lifting member (11), the mold column member passes through the adjustment component to abut against the mold component, and an air intake channel is also provided in the mold column member, one end of the air intake channel is located on the end surface of the mold column member away from the connecting member 15.

10. The molding device according to claim 9, characterized in that The first drive assembly (7) and the second drive assembly (8) further include: A pressure sensor (14), wherein the pressure sensor (14) is arranged between the connecting member (15) and the moving end, and a portion of the pressure sensor (14) extends into the avoidance hole of the connecting member (15).

11. The molding device according to claim 9, characterized in that The connecting member (15) comprises at least four side plates connected in sequence, wherein two of the side plates are arranged opposite to each other along the first direction; The mold column member comprises: a second air intake block (16), the second air intake block (16) being connected to one of the side plates away from the lifting member (11) and being located on a side of the side plate adjacent to the lifting member (11), a first groove being formed on a surface of the second air intake block (16) facing away from the lifting member (11), and a second air intake port (64) being formed on an outer periphery; a first column (19), the first column (19) being connected to a side of the side plate away from the second air intake block (16), the first column (19) having a second through hole, the second through hole penetrating a surface of the first column (19) opposite to the first direction; A second column (20), the second column (20) being fixedly connected to an end of the first column (19) away from the connecting member (15), the second column (20) having a third through hole, the third through hole penetrating a surface of the second column (20) opposite to the first direction; The second air inlet (64), the first groove, the second through hole and the third through hole are connected to form the air inlet channel.

12. The molding device according to claim 9, characterized in that The first drive assembly (7) and the second drive assembly (8) further include: a second fixing plate (25), the second fixing plate (25) being arranged below the second driving member (9) and supporting the second driving member (9); a second mounting plate (21), the second mounting plate (21) being arranged on a side of the connecting member (15) and fixedly connected to the frame, the second mounting plate (21) having a guide rail (23) extending along the first direction, and the connecting member (15) sliding along the guide rail (23); A positioning device (24), wherein the positioning device (24) is arranged on the second mounting plate (21) to obtain the position of the connecting member (15); and / or, a third mounting plate (12), the third mounting plate (12) being arranged below the lifting member (11) to support the lifting member (11), and a surface of the third mounting plate (12) facing away from the lifting member (11) being formed with convex strips (13) arranged opposite to each other.

13. The molding device according to any one of claims 1 to 8, characterized in that: The mold assembly comprises: A lower mold (48), wherein the outer periphery of the lower mold (48) is provided with a flange; a positioning sleeve (50), the positioning sleeve (50) being sleeved outside the lower mold (48) and located on the flange, and a venting through hole being provided on a side surface of the positioning sleeve (50); An upper mold (49) is located in the positioning sleeve (50) and is buckled on the lower mold (48), and the opposing surfaces of the upper mold (49) and the lower mold (48) are respectively formed with a protruding portion and a recessed portion.

14. The molding device according to claim 13, characterized in that The molding device further comprises a core fixing assembly, wherein the core fixing assembly is configured to place the glass preform (51) in the recessed portion of the lower mold (48); The core fixing assembly comprises: A suction pen fixing member (53), wherein one end of the suction pen fixing member (53) facing the lower mold (48) has a first positioning groove, and the first positioning groove accommodates the positioning sleeve (50); a vacuum suction pen (52), the vacuum suction pen (52) being inserted into the suction pen fixing member (53) and fixedly connected to the suction pen fixing member (53), the vacuum suction pen (52) having an end facing the lower mold (48) having a buffer pad, and a vacuum pipe being further provided in the vacuum suction pen (52), one end of the vacuum pipe extending to the buffer pad; A vacuum air pipe (54), one end of the vacuum air pipe (54) being connected to an end of the vacuum pipe away from the buffer pad, and the other end of the vacuum air pipe being configured to be connected to an air supply device.

15. The molding device according to any one of claims 1 to 8, characterized in that: The molding equipment also includes: A second horizontal plate (57), the second horizontal plate (57) being fixedly connected to the frame and located below the adjustment assembly; a third air intake block (59), the third air intake block (59) being arranged on a side of the second horizontal plate (57) away from the mold assembly and being fixedly connected to the second horizontal plate (57), and a third air intake port (65) being provided on a side surface of the third air intake block (59); a second guide seal (60), the second guide seal (60) being arranged on a side of the third air intake block (59) away from the second horizontal plate (57) and being fixedly connected to the third air intake block (59); a second cooling plate (61), the second cooling plate (61) being arranged on a side of the second horizontal plate (57) adjacent to the mold assembly and being fixedly connected to the second horizontal plate (57), the second cooling plate (61) being abutted against a second end of the sealing cover (40), and a second cooling channel being arranged in the second cooling plate (61); The second through hole passes through the second horizontal plate (57), the third air intake block (59), the second guide seal (60) and the second cooling plate (61), and is connected to the third air intake port (65). The second guide seal (60) circumferentially seals the first drive assembly (7).

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