A method and device for lens extrusion molding

Abstract

The invention discloses a method and device for lens extrusion molding, which relates to the technical field of automated eyeglass manufacturing devices, solves the stress problem generated by a conventional lens injection molding process, and greatly shortens the production cycle of the overall lens molding process. The method and device include: a main frame, an extruder, a quantitative mechanism, a material receiving mechanism, a first turntable mechanism, a mold feeding mechanism, a second turntable mechanism, a compression molding mechanism, and a finished product unloading mechanism. The method and device use a quantitative mechanism to measure, so that the extruder can perform precise cutting and unloading in the process of uniform material discharge; the quantitative compression molding of the lens is achieved by setting a compression molding mechanism, wherein the internal stress of the lens is eliminated during the molding process through the cooperation of a heating and temperature regulating module, and the periodic lens molding production under the continuous operation of the extruder is achieved through a multi-die seat turntable structure and a multi-die seat assembly line operation, thereby greatly improving the production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of automated eyeglass manufacturing equipment, and in particular to a lens extrusion molding method and device. Background Art

[0002] In today's technological environment, the eyewear industry is developing rapidly, the demand for lenses is growing, and the requirements for lens quality are increasing simultaneously. The existing plastic lens processing technology is mainly injection molding by injection molding machines. During the injection molding process, the hot material fluid is injected into the injection mold and encounters cold, and the contact part quickly cools down and plasticizes. Then the hot material fluid is continuously injected into the mold, causing shear stress between the front and rear materials, and most of it is retained in the product as the molding cools. In addition, due to the high pressure of injection molding, it acts on the closed mold, resulting in different molecular orientations during the plasticization process, and there is a large internal stress inside the product. In order to eliminate internal stress, a stress elimination process is usually performed at the end of the injection molding process. In addition, since the temperature and pressure conditions of molecular orientation and deorientation are closely related to the product material formula, the existing lens molding production cycle is long and the production process is complex, which makes it difficult to meet the extremely high quality requirements of the product. Summary of the invention

[0003] In view of the stress problem and low production efficiency problem caused by the lens injection molding process mentioned above, the purpose of the present invention is to provide a method and device for lens extrusion molding, which solves the internal stress problem caused by molding and greatly shortens the production cycle of the overall lens molding process.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A lens extrusion molding device, comprising: a main frame 1, an extruder 2, a quantitative mechanism 3, a material receiving mechanism 4, a first turntable mechanism 5, a compression molding mechanism 6, a second turntable mechanism 7, a mold loading mechanism 8 and a finished product unloading mechanism 9, wherein the extruder 2, the first turntable mechanism 5, the second turntable mechanism 7, the mold loading mechanism 8 and the finished product unloading mechanism 9 are all installed on the main frame 1, the material receiving mechanism 4 is installed on the first turntable mechanism 5, the quantitative mechanism 3 is installed on the extruder 2, the quantitative mechanism 3 is arranged above the material receiving mechanism 4, and the quantitative mechanism 3 is used to control the extruder 2 to perform a quantitative discharge operation on the material receiving mechanism 4; a plurality of the compression molding mechanisms 6 are installed on the second turntable mechanism 7, and the second turntable mechanism 7 is used to transfer the compression molding mechanism 6 to the first turntable mechanism 5 for compression molding; the mold loading mechanism 8 is used to perform a mold loading operation on the first turntable mechanism 5; and the finished product unloading mechanism 9 is used to perform a finished product unloading operation on the compression molding mechanism 6.

[0006] The above-mentioned lens extrusion molding device, wherein the quantitative mechanism 3 includes: a rotating cutting component 32 and a metering and detecting component 33, and the extruder 2 includes: a head 22; the rotating cutting component 32 is connected to the mouth die of the head 22, and the metering and detecting component 33 is installed in the inner cavity of the head 22, and the rotating cutting component 32 performs segmented quantitative cutting of the molten material of the mouth die by rotating.

[0007] The above-mentioned lens extrusion molding device, wherein the first turntable mechanism 5 includes: a first turntable 51, a first turntable driving component 52 and a first turntable supporting seat 53, the first turntable 51 is installed on the main frame 1 through the first turntable supporting seat 53, and the first turntable driving component 52 is used to drive the first turntable 51 to rotate.

[0008] The above-mentioned lens extrusion molding device, wherein the material receiving mechanism 4 includes: a mold clamp 41, a first heating element 42 and a first cylinder 43, the first heating element 42 and the first cylinder 43 are arranged below the quantitative mechanism 3, the first cylinder 43 is used to drive the first heating element 42 to move, and a plurality of the mold clamps 41 are installed along the outer edge of the first turntable 51, and any of the mold clamps 41 can be operably rotated to between the quantitative mechanism 3 and the first heating element 42.

[0009] The above-mentioned lens extrusion molding device, wherein the second turntable mechanism 7 includes: a second turntable 71, a second turntable driving component 72 and a second turntable supporting seat 73, the second turntable 71 is installed on the main frame 1 through the second turntable supporting seat 73, and the second turntable driving component 72 is used to drive the second turntable 71 to rotate.

[0010] The above-mentioned lens extrusion molding device, wherein the compression molding mechanism 6 includes: an upper mold base 61, a lower mold base 62, a bottom lifting component 63, a lower pressing component 64, an outer mold molding base 65 and a third heating element 66, wherein the lower pressing component 64, the upper mold base 61, the lower mold base 62, the outer mold molding base 65 and the bottom lifting component 63 are arranged in sequence along the vertical direction, and the lower pressing component 64 and the outer mold molding base 65 are both installed on the second turntable 71, the lower end of the lower pressing component 64 is installed with the upper mold base 61, and the upper surface of the outer mold molding base 65 is installed with the lower mold base 62, and the lower pressing component 64 is used to push the upper mold base 61 into the outer mold molding base 65, wherein the outer film A through-hole needle 651 and a first spring 652 are installed in the molding seat 65, the through-hole needle 651 is installed on the outer mold molding seat 65, the first spring 652 is installed between the outer mold molding seat 65 and the through-hole needle 651, the through-hole needle 651 is pushed by the curvature of the inner wall of the lower mold seat 62 and the first spring 652, and moves in the vent hole of the outer mold molding seat 65, the upper mold seat 61 and the lower mold seat 62 are operably combined to form a cavity structure, the third heating element 66 is installed in both the upper mold seat 61 and the lower mold seat 62, the bottom lifting component 63 is installed on the outer mold molding seat 65, and the bottom lifting component 63 is used to push the finished lens out of the outer mold molding seat 65.

[0011] The above-mentioned lens extrusion molding device, wherein the mold feeding mechanism 8 includes: a feeding conveyor line 81, a first transport cylinder component 82, a flip cylinder component 83, a second heating element 84 and a second cylinder 85, the feeding conveyor line 81 is installed on the main frame 1, the first transport cylinder component 82, the flip cylinder component 83, the second heating element 84 and the second cylinder 85 are all installed on the feeding conveyor line 81, and the second cylinder 85 is used to drive the second heating element 84 to move.

[0012] In the above-mentioned lens extrusion molding device, the finished product unloading mechanism 9 includes: an unloading conveyor line 91 and a second transport cylinder component 92 , the unloading conveyor line 91 is installed on the main frame 1 , and the second transport cylinder component 92 is installed on the unloading conveyor line 91 .

[0013] A method for lens extrusion molding, applicable to the above-mentioned lens extrusion molding device, comprising:

[0014] S1: heating the raw materials for lens molding into molten materials and extruding them;

[0015] S2: dividing the molten material into set proportions by a quantitative method;

[0016] S3: placing the upper glass mold and the lower glass mold required for molding in an orderly manner;

[0017] S4: transferring the upper glass mold, the divided molten material and the lower glass mold to the compression molding mechanism 6;

[0018] S5: compressing and exhausting the molten material through the compression molding mechanism 6;

[0019] S6: After orderly compression molding, the molded lens is demolded and taken out.

[0020] In the above-mentioned lens extrusion molding method, wherein, in the above-mentioned steps S1 to S6, a temperature control module is provided to adjust the temperature of the molten material.

[0021] Due to the adoption of the above technology, the present invention has the following positive effects compared with the prior art:

[0022] (1) The present invention improves the extrusion molding principle, utilizes the advantages of the extruder such as continuous low-pressure extrusion, uniform mixing, and no bubbles in the extruded fluid for molding production, and adopts multi-mold assembly line production. Compared with the existing single-mold molding of injection molding, the production speed is greatly improved;

[0023] (2) The present invention provides a quantitative mechanism, which can continuously extrude materials while also performing quantitative production according to product types;

[0024] (3) The present invention eliminates stress during the compression molding process by providing a compression molding mechanism and heating temperature control, thereby ensuring product quality and eliminating the need for subsequent heating to eliminate stress, thus saving a large amount of production time and cost;

[0025] (4) The present invention uses glass upper and lower molds for molding. Compared with injection molds, glass molds have lower costs and higher surface quality of molded products, and do not have the disadvantage of mold surface corrosion commonly seen in injection molds;

[0026] (5) The present invention provides a heating temperature control module to regulate the contact process of the molding material, which can meet the production requirements of various different formulas and different models of products;

[0027] (6) The present invention provides a lower die seat lifting mechanism for the compression molding mechanism, which, in cooperation with the outer die molding seat, facilitates the loading of the lower die sheet and the demolding of the molded product;

[0028] (7) The present invention sets a multi-station turntable periodic operation method, the extruder runs continuously, and each station operates in a flow-line manner, thereby realizing parallel processing of multiple lenses and greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a lens extrusion molding device of the present invention.

[0030] Figure 2 It is a top view of a lens extrusion molding device of the present invention.

[0031] Figure 3 It is a structural schematic diagram of a main frame of a lens extrusion molding device of the present invention.

[0032] Figure 4 This is a schematic diagram of the spatial structure of an extruder and a quantitative device of a lens extrusion molding device of the present invention.

[0033] Figure 5 The present invention is a schematic diagram of the quantitative mechanism structure of a lens extrusion molding device.

[0034] Figure 6 The present invention is a schematic diagram of the structure of a material receiving mechanism of a lens extrusion molding device.

[0035] Figure 7 It is a schematic structural diagram of a first turntable mechanism of a lens extrusion molding device of the present invention.

[0036] Figure 8 The present invention is a schematic diagram of the compression molding mechanism structure of a lens extrusion molding device.

[0037] Fig. 9 The present invention is a schematic diagram of the second turntable structure of a lens extrusion molding device.

[0038] Fig.10 The present invention is a schematic diagram of the structure of a mold feeding mechanism of a lens extrusion molding device.

[0039] Fig.11 The present invention is a schematic structural diagram of a molding and unloading mechanism of a lens extrusion molding device.

[0040] Fig.12 It is a cross-sectional view of a compression molding die seat of a lens extrusion molding device of the present invention.

[0041] In the attached drawings: 1, main frame; 2, extruder; 22, die head; 3, quantitative mechanism; 32, rotary cutting component; 321 driving device; 322, cutting turntable; 33, metering and detection component; 4, material receiving mechanism; 41, mold clamp; 42, first heating element; 43, first cylinder; 5, first turntable mechanism; 51, first turntable; 52, first turntable driving component; 53, first turntable supporting seat; 6, compression molding mechanism; 61, upper mold base; 62, lower mold base; 63, bottom lifting component; 64. Pressing component; 65. External mold forming seat; 651. Through-hole needle; 652. First spring; 66. Third heating element; 7. Second turntable mechanism; 71. Second turntable; 72. Second turntable driving component; 73. Second turntable supporting seat; 8. Mold loading mechanism; 81. Loading conveyor line; 82. First transport cylinder component; 83. Turning cylinder component; 84. Second heating element; 85. Second cylinder; 9. Finished product unloading mechanism; 91. Unloading conveyor line; 92. Second transport cylinder component. DETAILED DESCRIPTION

[0042] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0043] Please refer to Figures 1 to 12 As shown, a lens extrusion molding device is shown, which includes: a main frame 1, an extruder 2, a quantitative mechanism 3, a material receiving mechanism 4, a first turntable mechanism 5, a compression molding mechanism 6, a second turntable mechanism 7, a mold loading mechanism 8 and a finished product unloading mechanism 9, the extruder 2, the first turntable mechanism 5, the second turntable mechanism 7, the mold loading mechanism 8 and the finished product unloading mechanism 9 are all installed on the main frame 1, the material receiving mechanism 4 is installed on the first turntable mechanism 5, the quantitative mechanism 3 is installed on the extruder 2, the quantitative mechanism 3 is arranged above the material receiving mechanism 4, the quantitative mechanism 3 is used to control the extruder 2 to perform quantitative material discharge operation on the material receiving mechanism 4; a plurality of compression molding mechanisms 6 are installed on the second turntable mechanism 7, the second turntable mechanism 7 is used to transfer the compression molding mechanism 6 to the first turntable mechanism 5 for compression molding operation; the mold loading mechanism 8 is used to perform mold loading operation on the first turntable mechanism 5; the finished product unloading mechanism 9 is used to perform finished product unloading operation on the compression molding mechanism 6.

[0044] Further, in a preferred embodiment, the quantitative mechanism 3 includes: a rotating cutting component 32 and a metering and detecting component 33, both of which are installed at the discharge port of the head 22 of the extruder 2, and the metering and detecting component 33 is used to measure and detect the extruded material of the extruder 2, and the rotating cutting component 32 includes: a driving device 321 and a cutting turntable 322, wherein the driving device 321 is used to drive the cutting turntable 322 to cut the extruded material.

[0045] Further, in a preferred embodiment, the first turntable mechanism 5 includes: a first turntable 51, a first turntable driving component 52 and a first turntable supporting seat 53, the first turntable 51 is installed on the main frame 1 through the first turntable supporting seat 53, and the first turntable driving component 52 is used to drive the first turntable 51 to rotate.

[0046] Furthermore, in a preferred embodiment, the material receiving mechanism 4 includes: a mold clamp 41, a first heating element 42 and a first cylinder 43. The first heating element 42 and the first cylinder 43 are arranged below the quantitative mechanism 3. The first cylinder 43 is used to drive the first heating element 42 to move. A plurality of mold clamps 41 are installed along the outer edge of the first turntable 51. Any mold clamp 41 can be operably rotated between the quantitative mechanism 3 and the first heating element 42.

[0047] Further, in a preferred embodiment, the second turntable mechanism 7 includes: a second turntable 71, a second turntable driving component 72 and a second turntable supporting seat 73, the second turntable 71 is installed on the main frame 1 through the second turntable supporting seat 73, and the second turntable driving component 72 is used to drive the second turntable 71 to rotate.

[0048] Further, in a preferred embodiment, the compression molding mechanism 6 includes: an upper mold base 61, a lower mold base 62, a bottom lifting component 63, a lower pressing component 64, an outer mold forming base 65, a through-hole needle 651, a first spring 652 and a third heating element 66. The lower pressing component 64, the upper mold base 61, the lower mold base 62, the outer mold forming base 65 and the bottom lifting component 63 are arranged in sequence in the vertical direction. The lower pressing component 64 and the outer mold forming base 65 are both installed on the second turntable 71. The upper mold base 61 is installed at the lower end of the lower pressing component 64, and the lower mold base 62 is installed on the upper surface of the outer mold forming base 65. The lower pressing component 64 is used to push the upper mold base 61 into the outer mold forming base 65. The upper mold base 61 and the lower mold base 62 can be operably enclosed to form a cavity structure. The third A heating element 66 is provided, and a bottom lifting component 63 is installed on the outer mold forming seat 65. The bottom lifting component 63 is used to push the finished lens out of the outer mold forming seat 65. A through-hole needle 651 and a first spring 652 are installed in the outer mold forming seat 65. The through-hole needle 651 is installed on the outer mold forming seat 65. The first spring 652 is installed between the outer mold forming seat 65 and the through-hole needle 651. The through-hole needle 651 is pushed by the curvature of the inner wall of the lower mold seat 62 and the first spring 652 to move in the vent hole of the outer mold forming seat 65. The upper mold seat 61 and the lower mold seat 62 are operably combined to form a cavity structure. A third heating element 66 is installed in both the upper mold seat 61 and the lower mold seat 62. A bottom lifting component 63 is installed on the outer mold forming seat 65. The bottom lifting component 63 is used to push the finished lens out of the outer mold forming seat 65.

[0049] Further, in a preferred embodiment, the mold feeding mechanism 8 includes: a feeding conveyor line 81, a first transport cylinder component 82, a flipping cylinder component 83, a second heating element 84 and a second cylinder 85. The feeding conveyor line 81 is installed on the main frame 1, and the first transport cylinder component 82, the flipping cylinder component 83, the second heating element 84 and the second cylinder 85 are all installed on the feeding conveyor line 81. The second cylinder 85 is used to drive the second heating element 84 to move.

[0050] Furthermore, in a preferred embodiment, the finished product unloading mechanism 9 includes: an unloading conveyor line 91 and a second transport cylinder component 92 , the unloading conveyor line 91 is installed on the main frame 1 , and the second transport cylinder component 92 is installed on the unloading conveyor line 91 .

[0051] A method for lens extrusion molding, applicable to the above-mentioned lens extrusion molding device, comprising:

[0052] S1: heating the raw materials for lens molding into molten materials and extruding them;

[0053] S2: dividing the molten material into set proportions by a quantitative method;

[0054] S3: placing the upper glass mold and the lower glass mold required for molding in an orderly manner;

[0055] S4: transferring the upper glass mold, the divided molten material and the lower glass mold to the compression molding mechanism 6;

[0056] S5: compressing and exhausting the molten material through the compression molding mechanism 6;

[0057] S6: After orderly compression molding, the molded lens is demolded and taken out.

[0058] Furthermore, in a preferred embodiment, a temperature control module is provided in the above steps S1 to S6 to adjust the temperature of the molten material.

[0059] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention.

[0060] The present invention also has the following implementation modes based on the above:

[0061] In a further embodiment of the present invention, a method and device for lens extrusion molding are provided, wherein the device comprises a main frame 1, an extruder 2, a dosing mechanism 3, a material receiving mechanism 4, a first turntable mechanism 5, a compression molding mechanism 6, a second turntable mechanism 7, a mold loading mechanism 8, and a finished product unloading mechanism 9, wherein the main frame 1 is connected to the extruder 2, the first turntable mechanism 5, the second turntable mechanism 7, the mold loading mechanism 8, and the finished product unloading mechanism 9; the extruder 2 is connected to the dosing mechanism 3; the material receiving mechanism 4 is arranged below the dosing mechanism 3, and the material receiving mechanism 4 is installed on the first turntable mechanism 5; the first turntable mechanism 5 is provided with the mold loading mechanism 8 and the compression molding mechanism 6 is arranged below the first turntable mechanism 5, and the compression molding mechanism 6 is installed on the second turntable mechanism 7; the mold loading mechanism 8 is connected to the first turntable mechanism 5; and the finished product unloading mechanism 9 is connected to the second turntable mechanism 7.

[0062] In a further embodiment of the present invention, the quantitative mechanism 3 includes: a quantitative mechanism frame 31, a rotating cutting component 32, and a metering detection component 33. Among them, the metering detection component 33 is connected to the inside of the extruder 2 and the discharge port, and the quantitative mechanism frame 31 is connected to the rotating cutting component 32. The quantitative mechanism 3 preferably uses the metering detection component 33 in combination with the extruder 2 detection parameters to call the database parameters to control the drive device to perform quantitative shearing of the material. It includes: pressure, flow, and temperature sensors; the rotating cutting component 32 includes: a drive device 321 and a cutting turntable 322. The drive device 321 is connected to the cutting turntable 322, and the material at the discharge hole is sheared by controlling the rotation of the turntable; a parameter database for quantitative shearing of various products and its software control module.

[0063] In a further embodiment of the present invention, the material receiving mechanism 4 comprises: a mold clamp 41 , a first heating element 42 , and a first cylinder 43 . The mold clamp 41 is mounted on the first turntable mechanism 5 , and the first heating element 42 is connected to the first cylinder 43 .

[0064] In a further embodiment of the present invention, the first turntable mechanism 5 comprises: a first turntable 51, a first turntable driving component 52, and a first turntable supporting seat 53. The first turntable supporting seat 53 is connected to the main frame 1, and the first turntable 51 and the first turntable driving component 52 are connected to the first turntable supporting seat 53.

[0065] In a further embodiment of the present invention, the mold feeding mechanism 8 comprises: a feeding conveyor line 81, a first transport cylinder component 82, a flip cylinder component 83, a second heating element 84, and a second cylinder 85. The feeding conveyor line 81 is fixed on the main frame 1, and the second heating element 84 is connected to the second cylinder 85. The first transport cylinder component 82 and the flip cylinder component 83 are connected to the feeding conveyor line 81.

[0066] In a further embodiment of the present invention, the compression molding mechanism 6 comprises: an upper mold base 61, a lower mold base 62, a bottom lifting component 63, a lower pressing component 64, an outer mold forming base 65, and a third heating element 66. Among them, the lower mold base 62 is connected to the bottom lifting component 63, the upper mold base 61 is connected to the lower pressing component 64, the lower mold base 62 is in the inner cavity of the outer mold forming base 65, and the upper mold base 61 enters the outer mold forming base 65 under the drive of the lower pressing component 64, and forms a cavity with a relatively fixed distance between the upper mold base 61 and the lower mold base 62.

[0067] In a further embodiment of the present invention, the second turntable mechanism 7 comprises: a second turntable 71, a second turntable driving component 72, and a second turntable supporting seat 73. The second turntable supporting seat 73 is fixed on the main frame 1, and the second turntable 71 driving mechanism and the second turntable 71 are connected to the second turntable supporting seat 73.

[0068] In a further embodiment of the present invention, the finished product unloading mechanism 9 comprises: an unloading conveying line 91 and a second transport cylinder component 92. The unloading conveying line 91 is fixed on the main frame 1, and the second transport cylinder component 92 is fixed on the unloading conveying line 91.

[0069] In a further embodiment of the present invention, a method for extrusion molding of a lens comprises the following steps:

[0070] -Heat and extrude the lens molding raw materials into a molten state.

[0071] - Divide the molten material into set portions by quantitative methods.

[0072] - Place the upper and lower glass molds required for molding in order

[0073] - The molten material divided by quantitative method is transferred together with the glass mold to the compression molding mechanism 6 mold connected to the switching mechanism.

[0074] - The compression molding mechanism 6 mold compresses and exhausts the molten material to form the mold.

[0075] -After orderly compression molding, the molded product is demoulded and taken out.

[0076] In a further embodiment of the present invention, the quantitative method may be to adapt the cavity to the volume of the product.

[0077] In a further embodiment of the present invention, the quantitative method may be to cut off the extruded material according to the metering detection feedback.

[0078] In a further embodiment of the present invention, an upper mold required for molding can be arranged on the first turntable mechanism 5 .

[0079] In a further embodiment of the present invention, an upper mold required for inserting and molding can be arranged on the compression molding mechanism 6 .

[0080] In a further embodiment of the present invention, a temperature control module is provided for the molten material during the process from the discharge of the extruder 2 to the discharge of the molten material after molding.

[0081] In a further embodiment of the present invention, the technical solution adopted by the present invention is: a method and device for lens extrusion molding, comprising: a main frame 1, an extruder 2, a quantitative mechanism 3, a material receiving mechanism 4, a first turntable mechanism 5, a compression molding mechanism 6, a second turntable mechanism 7, a mold loading mechanism 8, and a finished product unloading mechanism 9, wherein the main frame 1 is connected with the extruder 2, the first turntable mechanism 5, the second turntable mechanism 7, the mold loading mechanism 8 and the finished product unloading mechanism 9; the extruder 2 is connected with the quantitative mechanism 3; the material receiving mechanism 4 is arranged below the quantitative mechanism 3, and the material receiving mechanism 4 is installed on the first turntable mechanism 5; the first turntable mechanism 5 is provided with a mold loading mechanism 8 and the compression molding mechanism 6 is arranged below the first turntable mechanism 5, and the compression molding mechanism 6 is installed on the second turntable mechanism 7; the mold loading mechanism 8 is connected with the first turntable mechanism 5; the finished product unloading mechanism 9 is connected with the second turntable mechanism 7.

[0082] In a further embodiment of the present invention, in one implementation, the extruder 2 is preferably a twin-screw extruder 2 with an additional detection sensor inside to detect parameters such as pressure, flow rate, temperature, etc. of the extruded material.

[0083] In a further embodiment of the present invention, in one implementation, the quantitative mechanism 3 preferably uses the detection parameters of the extruder 2 to call the database parameters for quantitative shearing of the material. It includes: pressure; a rotary shearing knife, a driving device 321 connected to the rotary shearing knife; a parameter database for quantitative shearing of various products and its software control module.

[0084] In a further embodiment of the present invention, in one implementation, the material receiving structure includes: a mold clamp 41; a first heating element 42, a first cylinder 43 for fixing the heating element; a parameter database of the heating temperatures of the upper and lower molds for receiving various types of products and its software control module.

[0085] In a further embodiment of the present invention, in one implementation, the first turntable mechanism 5 comprises: a first turntable 51, the first turntable 51 is fixed on a first turntable support seat 53; and multiple groups of material receiving mechanisms 4 are fixed on the first turntable 51. The first turntable 51 is used to realize the production flow operation of extrusion material transfer.

[0086] In a further embodiment of the present invention, in one embodiment, the mold feeding mechanism 8 preferably adopts glass mold conveying and feeding, and transfers and feeds by clamping and flipping actions, and a heating and temperature control module is added in this process. The mechanism includes: a feeding conveyor line 81, which is fixed on the main frame 1 and connected to a first transport cylinder component 82 for feeding; a flip cylinder component 83; and a second heating element 84 for heating, which is fixed on a second lifting cylinder 85.

[0087] In a further embodiment of the present invention, in one implementation, the preferred structure of the compression molding mechanism 6 includes: a lower mold base 62, a bottom lifting component 63 connected below the lower mold base 62, and a third heating block connected above the lower mold base 62; an upper mold base 61, a lower pressing component 64 connected above the upper mold base 61, and a third heating element 66 connected below the upper mold base 61; an outer mold molding base 65, and an outer mold molding base 65 is a mounting bracket connecting the lower mold base 62 and the upper mold base 61.

[0088] In a further embodiment of the present invention, in one implementation, the second turntable mechanism 7 comprises: a second turntable 71, the second turntable 71 is fixed on a second turntable support seat 73; and a plurality of compression molding mechanisms 6 are fixed on the second turntable 71. The second turntable 71 is used to realize the production flow operation of material compression molding.

[0089] In a further embodiment of the present invention, in one implementation, the finished product unloading mechanism 9 includes: an unloading conveyor line 91, which is fixed on the main frame 1 and connected to a second transport cylinder component 92 for unloading.

[0090] In a further embodiment of the present invention, the present invention is improved by the extrusion molding principle, and the advantages of continuous low-pressure extrusion, uniform mixing, and no bubbles in the extruded fluid of the extruder 2 are used for molding production. The multi-mold assembly line production is adopted, and the production speed is greatly improved compared with the existing single-mold molding of injection molding.

[0091] In a further embodiment of the present invention, by providing a quantitative mechanism 3, quantitative production can be performed according to the product type while continuously extruding the material.

[0092] In a further embodiment of the present invention, by providing a compression molding mechanism 6 and heating temperature control, stress is eliminated during the compression molding process, thereby ensuring product quality and eliminating the need for subsequent heating to eliminate stress, thereby saving a lot of production time and cost.

[0093] In a further embodiment of the present invention, the molding is performed by using glass upper and lower molds. Compared with injection molds, the glass molds have lower costs and higher surface quality of the molded products, and do not have the disadvantage of mold surface corrosion commonly seen in injection molds.

[0094] In a further embodiment of the present invention, a heating temperature control module is provided to regulate the contact process of the molding material, thereby being compatible with the production requirements of products with various formulations and models.

[0095] In a further embodiment of the present invention, a lifting mechanism is provided for the lower mold base 62 of the compression molding mechanism 6, which, in cooperation with the outer mold molding base 65, facilitates the loading of the lower mold sheet and the demoulding of the molded product.

[0096] In a further embodiment of the present invention, by setting a multi-station turntable periodic operation method, the extruder 2 runs continuously, and each station operates in a flow-line manner, thereby realizing parallel processing of multiple lenses, thereby greatly improving production efficiency.

[0097] In a further embodiment of the present invention, a lens extrusion molding device includes: a main frame 1, an extruder 2, a dosing mechanism 3, a material receiving mechanism 4, a first turntable mechanism 5, a compression molding mechanism 6, a second turntable mechanism 7, a mold loading mechanism 8, and a finished product unloading mechanism 9, wherein the main frame 1 is connected to the extruder 2, the first turntable mechanism 5, the second turntable mechanism 7, the mold loading mechanism 8 and the finished product unloading mechanism 9; the extruder 2 is connected to the dosing mechanism 3; the material receiving mechanism 4 is arranged below the dosing mechanism 3, and the material receiving mechanism 4 is installed on the first turntable mechanism 5; the first turntable mechanism 5 is provided with the mold loading mechanism 8 and the compression molding mechanism 6 is arranged below the first turntable mechanism 5, and the compression molding mechanism 6 is installed on the second turntable mechanism 7; the mold loading mechanism 8 is connected to the first turntable mechanism 5; and the finished product unloading mechanism 9 is connected to the second turntable mechanism 7.

[0098] In a further embodiment of the present invention, the processing flow of the implementation scheme shown in the method of the present invention includes: pouring the configured solid material to be molded into the extruder 2, extruding the molten fluid through the mixing and heating system of the extruder 2, and feeding back the volume of the extruded fluid through the detection sensor provided in the extruder 2. According to the parameters of the processed product, quantitative cutting is performed in the quantitative mechanism 3, and the quantitative fluid material falls into the lower mold in the receiving mechanism 4, and then the heated upper mold is covered, and then enters the compression molding mechanism 6 for compression and exhaust molding, and finally the finished product is demolded and taken out.

[0099] In a further embodiment of the present invention, the extruder 2 is a twin-screw extruder, and the control parameters of the extruder 2 are connected to the whole machine control system, and the parameters of different models of products are adjusted in real time through the control system database parameters to ensure the quality and stability of the extruded material.

[0100] In a further embodiment of the present invention, the quantitative mechanism 3 includes: pressure, flow, and temperature sensors installed inside the extruder; a cutting turntable 322 and a driving device 321 for shearing, which executes a quantitative cutting action when the extruded material reaches a specified value according to the parameter value given by the database in the whole machine control system, so that the sheared material enters the material receiving mechanism.

[0101] In a further embodiment of the present invention, the material receiving mechanism 4 includes: a mold clamp 41 for positioning the glass mold; a first heating element 42 for heating the glass mold, and a first cylinder 43 connected to the first heating element 42 for lifting and lowering. The glass mold is heated by the first heating element 42 so that the temperature of the glass mold is kept within the allowable temperature range of the received material. In this preferred embodiment, the material receiving mechanism 4 is divided into four groups, and the corresponding functions are to take the upper mold of the glass mold, receive the extruded material sheared by the quantitative mechanism, receive the lower mold of the glass mold, and transfer the entire group of molds with the material to the compression molding mechanism.

[0102] In a further embodiment of the present invention, the first turntable mechanism 5 includes: a first turntable 51, the first turntable 51 is connected to the first turntable actuator 52, fixed on the first turntable support seat 53, and the turntable is connected to four sets of material receiving mechanisms 4; the first turntable 51 rotates through feedback of the execution status of four different workstations of the material receiving mechanism 4 to realize the assembly line operation of each function.

[0103] In a further embodiment of the present invention, the compression molding mechanism 6 includes: a lower mold base 62, a bottom lifting component 63 connected to the lower mold base 62, and a third heating component 66 connected to the upper mold base 62; an upper mold base 61, a lower pressing component 64 connected to the upper mold base 61, and a third heating component 66 connected to the lower mold base 61; an outer mold forming base 65, and the outer mold forming base 65, the lower mold base 62 and the upper mold base 61 are connected to the second turntable 71 together, so that the lower mold base 62 can shuttle and lift in the mold hole of the outer mold forming base 65 through the bottom lifting component 63, and the upper mold base 61 can enter the mold hole of the outer mold forming base 65 through the lower pressing component 64 to form a closed cavity between the lower mold base 62, and the order of objects filled in the cavity from bottom to top is: glass upper mold, fluid material to be formed, glass lower mold. Through the parameters set by the product performance requirements, the actuators of the upper and lower mold bases can adjust the height distance of the compressed cavity and the compression pressure.

[0104] In a further embodiment of the present invention, the compression molding mechanism 6 further includes: a through-hole needle and a first spring. The outer mold forming seat 65 is provided with a vent hole connecting its inner wall and outer wall. The through-hole needle is installed in the vent hole. One end of the through-hole needle close to the outer wall of the outer mold forming seat is provided with an end with a larger outer diameter. One end of the vent hole close to the inner wall of the outer mold forming seat is provided with an annular limiting groove plate. The first spring is sleeved on the through-hole needle. One end of the first spring abuts against the end with a larger outer diameter of the through-hole needle. The other end of the first spring abuts against the annular limiting groove plate. The inner wall of the lower mold seat 62 is inclined in the vertical direction. The through-hole needle is arranged obliquely, with one end of the through-hole needle close to the outer wall of the outer mold forming seat 65 resting against the inner wall of the lower mold seat 62. The lower mold seat 62 and the outer mold forming seat 65 are relatively displaced in the vertical direction to push the through-hole needle to move along the vent. The first spring is used to reset the through-hole needle, and the through-hole needle 651 is pushed through the vent through the side wall of the outer mold forming seat 65. After the finished lens is demoulded, the outer mold forming seat 65 descends, and after the side wall 65 of the outer mold forming seat is disconnected from the through-hole needle 651, the through-hole needle 651 pops out under the action of the first spring 652 to realize the function of cleaning the vent.

[0105] In a further embodiment of the present invention, the second turntable mechanism 7 includes: a second turntable 71, the second turntable 71 is connected to the second turntable actuator 72, fixed on the second turntable support seat 73, and the second turntable 71 is connected to multiple groups of compression molding mechanisms 6; the second turntable 71 rotates through feedback of the current execution status of the compression molding mechanism 6 to realize the assembly line operation of each function.

[0106] In a further embodiment of the present invention, the mold feeding mechanism 8 comprises: a feeding conveyor line 81, which is fixed on the main frame 1 and connected to a first transport cylinder component 82 for feeding; a turning cylinder component 83; and a second heating element 84 for heating, which is fixed on a second lifting cylinder 85. The upper mold piece and the lower mold piece of the glass mold are heated and fed to the mold clamp 41 of the receiving mechanism 4 through the feeding conveyor line 81.

[0107] In a further embodiment of the present invention, the finished product unloading mechanism 9 comprises: an unloading conveyor line 91, the unloading conveyor line 91 is fixed on the main frame 1, and a second transport cylinder component 92 for taking finished products is connected above. When the compression molding mechanism 6 completes the lens molding, the second turntable 71 rotates to the position below the finished product unloading mechanism 9, and the lower mold seat 62 in the compression molding mechanism 6 rises to lift the molded lens, and the second transport cylinder component 92 for taking the finished product clamps it out and sends it to the unloading conveyor line 91, and the periodic operation of the device is realized by the rotation of the second turntable 71.

[0108] In a further embodiment of the present invention, the present invention provides a method and device for quantitatively transferring the output of an extruder to a molding mold for compression molding to reduce the internal stress of the lens and accelerate the molding efficiency of the lens. The present invention measures by a quantitative mechanism 3 so that the extruder 2 can accurately cut the material during the uniform discharge process; by setting a compression molding mechanism 6, quantitative compression molding of the lens is achieved, wherein the internal stress of the lens is eliminated during the molding process through the cooperation of a heating and temperature control module; through a multi-mold seat turntable structure and a multi-mold seat assembly line operation, periodic lens molding production is achieved under continuous operation of the extruder, thereby greatly improving production efficiency.

[0109] In a further embodiment of the present invention, the extruder 2, the quantitative mechanism 3, the material receiving mechanism 4, the first turntable mechanism 5, and the compression molding mechanism 6 are all provided with a temperature control module, and the temperature of the molten material is adjusted by the temperature control module to keep it in a corresponding molten state or cool it down for molding.

[0110] In a further embodiment of the present invention, the first turntable 51 is a four-pointed turntable, and the left and right sides of the first turntable 51 are respectively two mold feeding mechanisms 8, one mold feeding mechanism 8 is used to feed the lower glass mold, and the other mold feeding mechanism 8 is used to feed the upper glass mold. The front and rear sides of the first turntable 51 are respectively the extruder 2 and the second turntable mechanism 7. The first turntable 51 is equipped with a receiving mechanism 4. After a mold feeding mechanism 8 places a lower glass mold on a receiving mechanism 4, the first turntable actuator 52 drives the first turntable 51 to rotate, and the receiving mechanism 4 moves to the bottom of the quantitative mechanism 3, and the extruder 2 drops the quantitatively cut molten material into the receiving mechanism through the quantitative mechanism 3. In the mechanism 4, the first turntable actuator 52 drives the first turntable 51 to rotate, and the material receiving mechanism 4 moves to the upper glass mold loading position. After another mold loading mechanism 8 places the upper glass mold on the material receiving mechanism 4, the first turntable actuator 52 drives the first turntable 51 to rotate, and the material receiving mechanism 4 moves to the compression molding station of the compression molding mechanism 6. The molten material is compressed and molded and cooled by the compression molding mechanism 6, and the compression molding mechanism 6, the upper glass mold, the lower glass mold and the finished lens are driven to rotate to the finished product unloading position by the second turntable mechanism 7. The bottom lifting component 63 pushes the finished lens out of the outer mold molding seat 65, and the finished product unloading mechanism 9 performs unloading operations on the finished lens.

[0111] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A lens extrusion molding device, characterized in that: include: A main frame (1), an extruder (2), a quantitative mechanism (3), a material receiving mechanism (4), a first turntable mechanism (5), a compression molding mechanism (6), a second turntable mechanism (7), a mold loading mechanism (8) and a finished product unloading mechanism (9), wherein the extruder (2), the first turntable mechanism (5), the second turntable mechanism (7), the mold loading mechanism (8) and the finished product unloading mechanism (9) are all mounted on the main frame (1), the material receiving mechanism (4) is mounted on the first turntable mechanism (5), the quantitative mechanism (3) is mounted on the extruder (2), and the The quantitative mechanism (3) is arranged above the material receiving mechanism (4), and the quantitative mechanism (3) is used to control the extruder (2) to perform quantitative material discharge operation on the material receiving mechanism (4); a plurality of the compression molding mechanisms (6) are installed on the second turntable mechanism (7), and the second turntable mechanism (7) is used to transfer the compression molding mechanisms (6) to the first turntable mechanism (5) for compression molding operation; the mold loading mechanism (8) is used to perform mold loading operation on the first turntable mechanism (5); the finished product unloading mechanism (9) is used to perform finished product unloading operation on the compression molding mechanism (6); The quantitative mechanism (3) comprises: a rotating cutting component (32) and a metering detection component (33), and the extruder (2) comprises: a die (22); the rotating cutting component (32) is connected to the die of the die, and the metering detection component (33) is installed in the inner cavity of the die (22), and comprises: pressure, flow, and temperature sensors; the rotating cutting component (32) performs segmented quantitative cutting of the molten material of the die by rotating; the rotating cutting component (32) comprises: a driving device (321) and a cutting turntable (322), wherein the driving device (321) is used to drive the cutting turntable (322) to cut the extruded material; The second turntable mechanism (7) comprises: a second turntable (71), a second turntable driving component (72) and a second turntable supporting seat (73); the second turntable (71) is mounted on the main frame (1) via the second turntable supporting seat (73); the second turntable driving component (72) is used to drive the second turntable (71) to rotate; The compression molding mechanism (6) comprises: an upper mold base (61), a lower mold base (62), a bottom lifting component (63), a lower pressing component (64), an outer mold forming base (65) and a third heating element (66); the lower pressing component (64), the upper mold base (61), the lower mold base (62), the outer mold forming base (65) and the bottom lifting component (66) are arranged in sequence along the vertical direction; the lower pressing component (64) and the outer mold forming base (65) are both installed on a second rotating disk (71); the upper mold base (61) is installed at the lower end of the lower pressing component (64); the outer mold forming base (65) is installed at the lower end of the lower pressing component (64); ) is installed on the upper surface of the mold base (62), the pressing component (64) is used to push the upper mold base (61) into the outer mold forming base (65), the upper mold base (61) and the lower mold base (62) are operable to enclose and form a cavity structure, the third heating element (66) is installed in both the upper mold base (61) and the lower mold base (62), the outer mold forming base (65) is installed with the bottom lifting component (63), the bottom lifting component (63) is used to push the finished lens out of the outer mold forming base (65); the outer mold forming base (65) is provided with a vent hole connecting its inner wall and outer wall.

2. The lens extrusion molding device according to claim 1, characterized in that: The first turntable mechanism (5) comprises: a first turntable (51), a first turntable driving component (52) and a first turntable supporting seat (53); the first turntable (51) is mounted on the main frame (1) via the first turntable supporting seat (53); and the first turntable driving component (52) is used for driving the first turntable (51) to rotate.

3. The lens extrusion molding device according to claim 2, characterized in that: The material receiving mechanism (4) comprises: a mold clamp (41), a first heating element (42) and a second cylinder (43); the first heating element (42) and the second cylinder (43) are arranged below the quantitative mechanism (3); the second cylinder (43) is used to drive the first heating element (42) to move; a plurality of the mold clamps (41) are installed along the outer edge of the first turntable (51); any of the mold clamps (41) can be operably rotated to between the quantitative mechanism (3) and the first heating element (42).

4. The lens extrusion molding device according to claim 1, characterized in that: The compression molding mechanism (6) also includes: a through-hole needle (651) and a first spring (652), wherein the through-hole needle (651) and the first spring (652) are installed in the outer film molding seat (65), the through-hole needle (651) is installed on the outer mold molding seat (65), the first spring (652) is installed between the outer mold molding seat (65) and the through-hole needle (651), and the through-hole needle (651) is pushed by the curvature of the inner wall of the lower mold seat (62) and the first spring (652) to move in the ventilation hole of the outer mold molding seat (65).

5. The lens extrusion molding device according to claim 1, characterized in that: The mold feeding mechanism (8) comprises: a feeding conveyor line (81), a first transport cylinder component (82), a flip cylinder component (83), a second heating element (84) and a third cylinder (85); the feeding conveyor line (81) is mounted on the main frame (1); the first transport cylinder component (82), the flip cylinder component (83), the second heating element (84) and the third cylinder (85) are all mounted on the feeding conveyor line (81); and the third cylinder (85) is used to drive the second heating element (84) to move.

6. The lens extrusion molding device according to claim 1, characterized in that: The finished product unloading mechanism (9) comprises: an unloading conveying line (91) and a second transport cylinder component (92); the unloading conveying line (91) is mounted on the main frame (1); and the second transport cylinder component (92) is mounted on the unloading conveying line (91).

7. A method for extruding a lens, applicable to the device for extruding a lens as claimed in any one of claims 1 to 6, characterized in that: include: S1: heating the raw materials for lens molding into molten materials and extruding them; S2: dividing the molten material into set proportions by a quantitative method; S3: placing the upper glass mold and the lower glass mold required for molding in an orderly manner; S4: transferring the upper glass mold, the divided molten material and the lower glass mold to a compression molding mechanism (6); S5: compressing and exhausting the molten material through a compression molding mechanism (6); S6: After orderly compression molding, the molded lens is demolded and taken out.

8. The lens extrusion molding method according to claim 7, characterized in that: In the above steps S1 to S6, a temperature control module is provided to adjust the temperature of the molten material.

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