CN114889055A

CN114889055A - Secondary injection molding mold for optical resin lenses

Info

Publication number: CN114889055A
Application number: CN202210441858.6A
Authority: CN
Inventors: 南基学
Original assignee: Yejia Optical Technology Guangdong Corp
Current assignee: Yejia Optical Technology Guangdong Corp
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-08-12

Abstract

The invention provides a secondary injection molding mold for an optical resin lens, which comprises an upper mold structure and a lower mold structure, wherein the upper mold structure comprises an upper base plate, a cooling plate and an upper template which are sequentially connected from top to bottom; the upper template is provided with a plurality of upper die cavities; the lower die structure sequentially comprises a lower die plate, a lower backing plate, a lower push plate and a bottom plate from top to bottom; the bottom plate is connected with the lower bolster through a lifting structure, the lower surface of the lower bolster is provided with a rotating motor, the power output end of the rotating motor is connected with a rotating shaft, and the rotating shaft is connected with the lower bolster; push rods are arranged on the upper surface of the lower push plate and on two opposite sides of the upper surface of the lower push plate corresponding to the two branch flow passages B; the upper surface of the lower template is provided with a lower template seat at the position corresponding to each upper die cavity, and the upper surface of the lower template seat is higher than that of the lower template; a molding cavity is arranged in the lower die holder, and a molding template is arranged in the molding cavity. Two-time injection molding action is formed through one set of mold, so that the production efficiency is ensured on one hand, and the injection molding quality of a lens product is ensured on the other hand.

Description

Secondary injection molding mold for optical resin lenses

Technical Field

The invention relates to the technical field of injection molds, in particular to a secondary injection molding mold for an optical resin lens.

Background

The resin lens is made of organic material, and has inside polymer chain structure connected to form stereo netted structure, relaxed intermolecular structure and space for relative displacement. The light transmittance is 84% -90%, the light transmittance is good, and the impact resistance of the optical resin lens is strong. The resins can be classified into natural resins and synthetic resins. Natural resin is a hydrocarbon secretion from a variety of plants, particularly conifers. Because of its special chemical structure and its potential use as latex paint and adhesives. Since it is a mixture of a plurality of high molecular compounds, the melting points are also different. The types of resins are very many, and the resins are widely applied in light and heavy industries and are often seen in daily life, such as plastics, resin glasses, coatings and the like. The resin lens is a lens which is chemically synthesized by using resin as a raw material and is formed by processing and polishing.

In optical resin lens production process, generally adopt injection mold shaping, to some needs injection moulding many times's product, can part many sets of mould shaping, carry out the back of moulding plastics for the first time in mould A promptly, shift to again and carry out the secondary in the mould B and mould plastics, so analogize, the process is complicated to production efficiency is low, and, carry out the in-process that shifts to the lens product, cause the influence to the quality of lens product easily, lead to the quality of product to be difficult to guarantee. In view of such circumstances, improvement is urgently required.

Disclosure of Invention

In view of the above, the present invention provides a secondary injection molding mold for an optical resin lens, which can ensure production efficiency and injection quality of a lens product by performing two injection molding operations with one set of mold.

The invention provides a secondary injection molding mold for an optical resin lens, which comprises an upper mold structure and a lower mold structure, wherein the upper mold structure comprises an upper base plate, a cooling plate and an upper template which are sequentially connected from top to bottom; the upper base plate is provided with an injection molding main runner, two sub-runners A communicated with the injection molding main runner are arranged on the same side in the cooling plate, and two sub-runners B communicated with the sub-runners A are arranged on the same side in the upper template; the upper template is provided with a plurality of upper die cavities; the lower die structure sequentially comprises a lower die plate, a lower backing plate, a lower push plate and a bottom plate from top to bottom; the bottom plate is connected with the lower push plate through a lifting structure, and the bottom plate is fixedly connected with the lower base plate through support columns to form an interval space; the supporting column penetrates through the lower push plate; a spacing space is formed between the lower backing plate and the lower pushing plate, and a spacing space is formed between the lower template and the lower backing plate; the lower surface of the lower backing plate is provided with a rotating motor, the power output end of the rotating motor is connected with a rotating shaft, and the rotating shaft penetrates through the lower backing plate and is connected with the lower template; push rods are arranged on the upper surface of the lower push plate and on two opposite sides of the upper surface of the lower push plate corresponding to the two sub-runners B; the upper surface of the lower template and the position corresponding to each upper die cavity are provided with lower die seats, and the upper surface of each lower die seat is higher than the upper surface of the lower template; a forming cavity is arranged in the lower die holder, and a forming template is arranged in the forming cavity; the depth of the forming cavity is greater than the thickness of the forming plate; after the die is closed, the upper die cavity and the forming template form an injection molding cavity; the bottom of the forming template is coaxially connected with an ejector rod corresponding to the push rod, and the push rod and the ejector rod are coaxially arranged; the ejector rod sequentially penetrates through the lower die base and the lower die plate and extends out of the lower die plate; buffer inner cavities are formed on the two opposite sides in the lower template and on the lower surface of the lower die base; a limiting boss A is fixedly arranged on the outer side surface of the part of the ejector rod, which is positioned in the buffer inner cavity; the height of the buffer inner cavity is set to be M, the thickness of the limiting boss A is set to be N, and M is larger than N; buffer springs are arranged in the buffer inner cavity and on the upper surface and the lower surface of the limiting boss A; when the forming template is at the maximum ejected height, the forming template is higher than the upper surface of the lower die holder; the resilience force of the buffer spring positioned above is larger than that of the buffer spring positioned below; when the ejector rod and the push rod are in a non-contact state, the buffer spring positioned above is abutted against the limiting boss A so as to enable the buffer spring positioned below to be in a compressed state, and meanwhile, the forming template is positioned at the lowest position in the forming cavity; a cooling liquid storage cavity is arranged on the other side, opposite to the sub-channel B, in the upper template, a liquid inlet is arranged on one side of the cooling liquid storage cavity, and a liquid outlet is arranged on the other side of the cooling liquid storage cavity; the liquid inlet is connected with a cooling liquid supply source through a pipeline, and the liquid outlet is connected with a cooling liquid recovery cavity.

Preferably, the lifting structure comprises a lifting motor and a lifting shaft, the lifting motor is installed on the bottom plate, one end of the lifting shaft is connected with the power output end of the lifting motor, and the other end of the lifting shaft is connected with the bottom of the lower pushing plate.

As an optimized scheme, the outer side surface of the lower die base is provided with external threads, the lower die plate and the position corresponding to the lower die base are provided with the abdicating groove, and the inner side wall of the abdicating groove is provided with internal threads matched with the external threads.

Preferably, the bottom of the top rod is provided with a guide groove for the push rod to be inserted into.

Preferably, the outer side surface of the bottom of the mandril is provided with a limiting boss B.

Preferably, the bottom of the forming template is provided with a mounting seat, the bottom of the mounting seat is connected with a positioning bolt, and the upper surface of the ejector rod is provided with a bolt groove for the positioning bolt to connect.

Preferably, the diameter of the forming template is equal to the inner diameter of the forming cavity.

Preferably, the outer diameter of the limiting boss A is equal to the inner diameter of the buffer inner cavity.

As the preferred scheme, the inner groove wall of the guide groove is provided with a silica gel sleeve.

As a preferred scheme, the number of the upper die cavities is set to be 4, and the upper die cavities are uniformly distributed on the lower surface of the upper die plate; the number of the lower die bases is 4, and the lower die bases are uniformly distributed on the upper surface of the lower template.

The invention has the beneficial effects that: when the first injection molding is carried out, the lower push plate drives the push rod to be in contact with the ejector rod and moves the ejector rod upwards for a set stroke, the ejector rod synchronously drives the molding template to move upwards to a preset position and then to be subjected to die assembly and injection molding, after the injection molding action of the first two injection molding cavities is completed, the lower push plate descends to a position where the lower push plate is separated from the contact with the ejector rod, then, the lower template rotates 180 degrees, the first two lower die seats completing the first injection molding are placed below the cooling liquid storage cavity, and the cooling is carried out through the cooling liquid storage cavity after the die assembly, so that the preparation is carried out for the second injection molding; then, starting injection molding action on the two latter injection molding cavities, wherein the lower push plate pushes the push rod to be in contact with the ejector rod and moves the ejector rod upwards for a set stroke, the ejector rod synchronously drives the molding template to move upwards to a preset position and then the mold is closed for injection molding, and after the injection molding action of the two latter injection molding cavities is finished, the lower push plate continuously descends to a position which is separated from the contact with the ejector rod; the lower die plate rotates 180 degrees again and then is matched, the front two lower die bases are subjected to secondary injection molding, and meanwhile, the two lower die bases are positioned below the cooling liquid storage cavity after being matched and cooled through the cooling liquid storage cavity; after the first two lower die holders finish the secondary injection molding, the lower die plate rotates 180 degrees again and then is matched, the second two lower die holders are subjected to the secondary injection molding, and meanwhile, the first two lower die holders are positioned below the cooling liquid storage cavity and cooled through the cooling liquid storage cavity; through such structure setting, realize forming twice injection moulding action through a set of mould, ensure production efficiency on the one hand, on the other hand ensures the quality of moulding plastics of lens product.

Drawings

FIG. 1 is a first cross-sectional view of the present invention (showing the relative structural relationship of the lower die base, the lower die plate, the ejector pin, and the push rod).

Fig. 2 is a second cross-sectional view of the present invention (showing the relative structural relationship of the rotary motor, the rotary shaft, the lower die plate and the lower backing plate).

Fig. 3 is a third cross-sectional view of the present invention (showing the coolant storage chamber).

FIG. 4 is a schematic view of the present invention in a clamped condition.

FIG. 5 is a top view of the lower platen.

Fig. 6 is a bottom view of the upper platen.

FIG. 7 is an enlarged view showing the relative structural relationship of the lower die base, the lower die plate, the ejector rod and the push rod.

Fig. 8 is an exploded view showing the relative structural relationship of the form die plate and the carrier rod.

The reference signs are: the mold comprises an upper mold structure 10, a lower mold structure 11, an upper backing plate 12, a cooling plate 13, an upper mold plate 14, a lower mold base 15, a lower mold plate 16, a lower backing plate 17, a lower backing plate 18, a bottom plate 19, a lifting motor 2, a lifting shaft 20, a support pillar 22, a push rod 23, a rotating motor 24, a guide groove 25, a limit boss B26, a push rod 27, a rotating shaft 28, a limit boss A29, a buffer inner cavity 30, a buffer spring 31, a molding mold plate 32, a molding cavity 33, an upper mold cavity 34, a branch channel A36, a branch channel B35, an injection molding main channel 37, a cooling liquid storage cavity 38, a liquid inlet 39, a liquid outlet 40, a positioning bolt 41, a mounting base 42, a bolt groove 43, an injection molding cavity 44 and a silica gel sleeve 45.

Detailed Description

For a better understanding of the features and technical solutions of the present invention, together with the specific objects and functions attained by the invention, reference is made to the following detailed description and accompanying drawings that form a part hereof.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-8, a secondary injection molding mold for an optical resin lens includes an upper mold structure 10 and a lower mold structure 11, wherein the upper mold structure 10 includes, from top to bottom, an upper base plate 12, a cooling plate 13, and an upper mold plate 14, which are connected in sequence; the upper base plate 12 is provided with an injection molding main runner 37, two sub-runners A36 communicated with the injection molding main runner 37 are arranged on the same side in the cooling plate 13, and two sub-runners B35 communicated with the sub-runners A36 are arranged on the same side in the upper plate 14; the upper die plate 14 is provided with a plurality of upper die cavities 34; the lower die structure 11 sequentially comprises a lower die plate 16, a lower backing plate 17, a lower push plate 18 and a bottom plate 19 from top to bottom; bottom plate 19 passes through elevation structure and is connected with lower push plate 18, and elevation structure includes lift motor 21 and lift axle 20, and lift motor 21 installs on bottom plate 19, and the one end of lift axle 20 is connected with lift motor 21's power take off end, and the other end of lift axle 20 is connected with lower push plate 18's bottom. The bottom plate 19 is fixedly connected with the lower backing plate 17 through a support column 22 so as to form an interval space; the supporting column 22 penetrates through the lower push plate 18; a spacing space is formed between the lower backing plate 17 and the lower backing plate 18, and a spacing space is formed between the lower backing plate 16 and the lower backing plate 17; the lower surface of the lower backing plate 17 is provided with a rotating motor 24, the power output end of the rotating motor 24 is connected with a rotating shaft 28, and the rotating shaft 28 penetrates through the lower backing plate 17 and is connected with the lower template 18; push rods 23 are arranged on two opposite sides of the upper surface of the lower push plate 18 corresponding to the two branch flow passages B35. The upper surface of the lower template 16 and the position corresponding to each upper die cavity 34 are provided with lower die seats 15, and the upper surface of each lower die seat 15 is higher than the upper surface of the lower template 16; a molding cavity 33 is arranged in the lower die holder 15, and a molding template 32 is arranged in the molding cavity 33. The number of the upper die cavities 34 is set to be 4, and the upper die cavities are uniformly distributed on the lower surface of the upper die plate 14; the number of the lower die seats 15 is 4, and the lower die seats are uniformly distributed on the upper surface of the lower die plate 16.

The depth of the molding cavity 33 is greater than the thickness of the molding template 32; the diameter of the forming die plate 32 is equal to the inner diameter of the forming cavity 33. After the die is closed, the upper die cavity 34 and the forming template 32 form an injection molding cavity 44; the bottom of the molding template 32 is coaxially connected with a mandril 27 corresponding to the push rod 23, and the push rod 23 and the mandril 27 are coaxially arranged; the mandril 27 sequentially penetrates through the lower die base 15 and the lower die plate 16 and extends out of the lower die plate 16; buffer cavities 30 are formed on two opposite sides in the lower template 16 and positioned on the lower surface of the lower die base 15; a limiting boss A29 is fixedly arranged on the outer side surface of the part of the ejector rod 27, which is positioned in the buffer inner cavity 30; the height of the buffer inner cavity 30 is set to be M, the thickness of the limiting boss A29 is set to be N, and M is larger than N; the buffer springs 31 are arranged in the buffer inner cavity 30 and positioned on the upper surface and the lower surface of the limiting boss A29; when the forming template 32 is at the maximum ejected height, the forming template 32 is higher than the upper surface of the lower die holder 15; the resilience force of the buffer spring 31 at the upper part is larger than that of the buffer spring 31 at the lower part; when the ejector rod 27 and the push rod 23 are in a non-contact state, the buffer spring 31 located above is pressed against the limit boss a29 so as to urge the buffer spring 31 located below to be in a compressed state, and at the same time, the forming die plate 32 is located at the lowest position in the forming cavity 33.

A cooling liquid storage cavity 38 is arranged on the other side, opposite to the branch channel B35, in the upper template 14, a liquid inlet 39 is arranged on one side of the cooling liquid storage cavity 38, and a liquid outlet 40 is arranged on the other side of the cooling liquid storage cavity 38; the inlet port 39 is connected to a coolant supply source via a conduit, and the outlet port 40 is connected to a coolant recovery chamber.

As a preferred embodiment, the outer side surface of the lower die holder 15 is formed with an external thread, the lower die plate 16 and the position corresponding to the lower die holder 15 are both provided with a yielding groove, and the inner side wall of the yielding groove is both formed with an internal thread matched with the external thread. Through the structure, the lower die holder 15 is convenient to disassemble, clean and maintain, and the operation is simple and convenient.

In a preferred embodiment, the bottom of the top rod 27 is opened with a guide groove 25 for inserting the push rod 23. The push rod 23 can be stably contacted with the push rod 27, and the processing precision is ensured.

In a preferred embodiment, the outer side surface of the bottom of the ejector rod 27 is formed with a limiting boss B26 to avoid over-jacking the forming die plate 32 when the equipment fails.

In a preferred embodiment, the bottom of the forming die plate 32 is provided with a mounting seat 42, the bottom of the mounting seat 42 is connected with a positioning bolt 41, and the upper surface of the top bar 27 is provided with a bolt groove 43 for connecting the positioning bolt. Through the structure arrangement, the forming template 32 is convenient to disassemble for cleaning and maintenance, and the operation is simple and convenient.

In a preferred embodiment, the outer diameter of the limiting boss A29 is equal to the inner diameter of the buffer inner cavity 30, so that the ejector rod 27 is ensured not to shake in the process of vertical displacement, and the injection molding precision is ensured.

In a preferred embodiment, the inner wall of the guide groove 25 is provided with a silicone sleeve 45 to improve the stability of the push rod 23 when contacting the push rod 27.

When the injection molding is carried out for the first time: the lower push plate drives the push rod to contact with the ejector rod and moves the ejector rod upwards for a set stroke, the ejector rod synchronously drives the forming template to move upwards to a set position, and then the upper die structure 10 is driven by the driving assembly to descend for die assembly and injection molding; after accomplishing the action of moulding plastics of two preceding die cavities of moulding plastics, go up the mould structure 10 and move upward and reset, the lower push plate descends to the position back that breaks away from with the ejector pin contact, and rotating electrical machines 24 makes two preceding die holders of accomplishing first injection moulding locate the below in coolant liquid storage chamber after driving the lower bolster rotation 180 through the pivot to lower the temperature through coolant liquid storage chamber after the compound die once more, make preparation for secondary injection moulding. And then, starting injection molding actions on the last two injection molding cavities, wherein at the moment, the lower push plate pushes the push rod to be in contact with the ejector rod and move the ejector rod upwards for a set stroke, the ejector rod synchronously drives the molding template to move upwards to a preset position, the upper mold structure 10 is driven by the driving assembly to descend for mold closing and injection molding, after the injection molding actions of the last two injection molding cavities are completed, the lower push plate continuously descends to a position where the lower push plate is separated from the contact with the ejector rod, the upper mold structure 10 moves upwards to reset, the lower mold plate rotates 180 degrees again, so that the last two injection molding cavities are located below the cooling liquid storage cavity, and the first two injection molding cavities return to positions to be subjected to injection molding again.

And during secondary injection molding: the upper die structure 10 is driven by the driving assembly to descend for die assembly and injection molding, the front two lower die bases are subjected to secondary injection molding, and meanwhile, the two lower die bases are located below the cooling liquid storage cavity after die assembly and cooled through the cooling liquid storage cavity; after two injection moulding are accomplished to two current die holders, the lower bolster is the compound die after 180 degrees of rotations once more, carries out two injection moulding to two back die holders, and meanwhile, two preceding die holders are in the below in coolant liquid storage chamber and are cooled down through the coolant liquid storage chamber.

After the secondary injection molding is finished, the lower push plate pushes the push rod to be in contact with the ejector rod and moves the jacking ejector rod upwards for a given stroke, so that the molding template 32 is higher than the lower die holder 15, and the material taking is facilitated.

Through such structure setting, realize forming twice injection moulding action through a set of mould, ensure production efficiency on the one hand, on the other hand ensures the quality of moulding plastics of lens product.

The above-mentioned embodiments only express one embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A secondary injection molding mold for an optical resin lens comprises an upper mold structure (10) and a lower mold structure (11), wherein the upper mold structure (10) comprises an upper base plate (12), a cooling plate (13) and an upper mold plate (14) which are sequentially connected from top to bottom; the upper base plate (12) is provided with an injection molding main runner (37), two sub-runners A (36) communicated with the injection molding main runner (37) are arranged on the same side in the cooling plate (13), and two sub-runners B (35) communicated with the sub-runners A (36) are arranged on the same side in the upper template (14); the upper die plate (14) is provided with a plurality of upper die cavities (34); the lower die structure (11) sequentially comprises a lower die plate (16), a lower backing plate (17), a lower push plate (18) and a bottom plate (19) from top to bottom; the method is characterized in that:

the bottom plate (19) is connected with the lower push plate (18) through a lifting structure, and the bottom plate (19) is fixedly connected with the lower backing plate (17) through a support column (22) to form an interval space; the supporting column (22) penetrates through the lower push plate (18); a spacing space is formed between the lower backing plate (17) and the lower push plate (18), and a spacing space is formed between the lower template (16) and the lower backing plate (17); a rotating motor (24) is mounted on the lower surface of the lower backing plate (17), a power output end of the rotating motor (24) is connected with a rotating shaft (28), and the rotating shaft (28) penetrates through the lower backing plate (17) and is connected with the lower template (18); push rods (23) are arranged on the upper surface of the lower push plate (18) and on two opposite sides corresponding to the two sub-runners B (35);

the upper surface of the lower template (16) is provided with lower die seats (15) at positions corresponding to the upper die cavities (34), and the upper surface of each lower die seat (15) is higher than that of the lower template (16); a molding cavity (33) is arranged in the lower die holder (15), and a molding template (32) is arranged in the molding cavity (33); the depth of the molding cavity (33) is greater than the thickness of the molding template (32); after the die is closed, the upper die cavity (34) and the forming template (32) form an injection molding cavity (44); the bottom of the forming template (32) is coaxially connected with a push rod (27) corresponding to the push rod (23), and the push rod (23) and the push rod (27) are coaxially arranged; the ejector rod (27) sequentially penetrates through the lower die base (15) and the lower die plate (16) and extends out of the lower die plate (16); buffer inner cavities (30) are formed on two opposite sides in the lower template (16) and on the lower surface of the lower die base (15); a limiting boss A (29) is fixedly arranged on the outer side surface of the part, located in the buffer inner cavity (30), of the ejector rod (27); the height of the buffer inner cavity (30) is set to be M, the thickness of the limiting boss A (29) is set to be N, and M is larger than N; buffer springs (31) are arranged in the buffer inner cavity (30) and positioned on the upper surface and the lower surface of the limiting boss A (29); when the forming template (32) is at the maximum ejected height, the forming template (32) is higher than the upper surface of the lower die holder (15); the resilience force of the buffer spring (31) positioned at the upper part is larger than that of the buffer spring (31) positioned at the lower part; when the ejector rod (27) and the ejector rod (23) are in a non-contact state, the buffer spring (31) positioned above is pressed against the limiting boss A (29) so as to urge the buffer spring (31) positioned below to be in a compressed state, and meanwhile, the forming template (32) is positioned at the lowest position in the forming cavity (33);

a cooling liquid storage cavity (38) is formed in the other side, opposite to the sub-channel B (35), of the upper template (14), a liquid inlet (39) is formed in one side of the cooling liquid storage cavity (38), and a liquid outlet (40) is formed in the other side of the cooling liquid storage cavity (38); the liquid inlet (39) is connected with a cooling liquid supply source through a pipeline, and the liquid outlet (40) is connected with a cooling liquid recovery cavity.

2. The mold for secondary injection molding of an optical resin lens according to claim 1, wherein: the lifting structure comprises a lifting motor (21) and a lifting shaft (20), the lifting motor (21) is installed on the bottom plate (19), one end of the lifting shaft (20) is connected with the power output end of the lifting motor (21), and the other end of the lifting shaft (20) is connected with the bottom of the lower push plate (18).

3. The mold for secondary injection molding of an optical resin lens according to claim 1, wherein: the lateral surface of die holder (15) is formed with the external screw thread, lower bolster (16) with the groove of stepping down has all been seted up to the position that die holder (15) corresponds, the inside wall in groove of stepping down all be formed with external screw thread complex internal thread.

4. The mold for secondary injection molding of an optical resin lens according to claim 1, wherein: the bottom of the ejector rod (27) is provided with a guide groove (25) for the push rod (23) to insert.

5. The mold for secondary injection molding of an optical resin lens according to claim 1, wherein: and a limiting boss B (26) is formed on the outer side surface of the bottom of the ejector rod (27).

6. The mold for secondary injection molding of an optical resin lens according to claim 1, wherein: the bottom of shaping template (32) is provided with mount pad (42), the bottom of mount pad (42) is connected with positioning bolt (41), the upper surface of ejector pin (27) is provided with the confession bolt groove (43) that positioning bolt connects.

7. An optical resin lens secondary injection molding die according to claim 1, characterized in that: the diameter of the forming template (32) is equal to the inner diameter of the forming cavity (33).

8. The mold for secondary injection molding of an optical resin lens according to claim 1, wherein: the outer diameter of the limiting boss A (29) is equal to the inner diameter of the buffer inner cavity (30).

9. The mold for secondary injection molding of an optical resin lens according to claim 4, wherein: and a silica gel sleeve (45) is arranged on the inner groove wall of the guide groove (25).

10. The mold for secondary injection molding of an optical resin lens according to any one of claims 1 to 9, wherein: the number of the upper die cavities (34) is set to be 4, and the upper die cavities are uniformly distributed on the lower surface of the upper die plate (14); the number of the lower die seats (15) is 4, and the lower die seats are uniformly distributed on the upper surface of the lower template (16).