CN219903113U - Die pre-resetting structure and optical fiber connector die using same - Google Patents

Abstract

The utility model discloses a die pre-resetting structure and an optical fiber connector die using the same, comprising: the device comprises a top plate, a front template, a rear template, a thimble assembly, a reset rod and a return rod; an elastic reset piece is arranged between the top plate and the front template; one end of the reset rod is fixed on the top plate, and the reset rod is arranged in a sliding penetrating manner on the front template; one end of the return rod is fixed to the thimble assembly, and the return rod penetrates through the rear template; when the front template and the rear template are assembled, the end part of the reset rod abuts against the end part of the return rod to reset the thimble assembly. The utility model aims to simplify the structure of the fine nozzle mould, reduce the manufacturing cost of the mould, improve the convenience of maintenance and improve the resetting efficiency of the thimble assembly.

Description

Die pre-resetting structure and optical fiber connector die using same

Technical Field

The utility model relates to the technical field of injection molds, in particular to a mold pre-resetting structure and an optical fiber connector mold using the same.

Background

Injection molding, also known as injection molding, is a method of injection and molding. The injection molding method has the advantages of high production speed and high efficiency, can realize automation of operation, can change the shape from simple to complex, can change the size from large to small, and is suitable for the molding processing fields of mass production, products with complex shapes and the like.

The existing mould structure generally adopts a two-plate mould and a three-plate mould, the three-plate mould and the two-plate mould are obviously different in that a stripping plate is arranged between a top plate and a front mould plate of the three-plate mould, and the three-plate mould has the mould opening process that firstly, the stripping plate is separated from the top plate, then, the front mould plate is separated from a rear mould plate, and then, a product is ejected under the action of a thimble assembly. The pouring channel congeals material and runner can automatically follow the stripper plate and drop. Usually, the pouring gate solidification material and the pouring gate are also required to be provided with a complex secondary ejection mechanism which is difficult to maintain, and the secondary ejection mechanism assists in stripping. The top plates of the two plate molds are usually fixedly connected with the front mold plate, the two plates are not moved relatively, and the molded product is left on the rear mold plate after the mold is opened; from the manufacturing and maintenance perspective, the two-plate die is lower in cost and easier to maintain, but a more ideal runner structure cannot be arranged, and only a large gate runner can be generally adopted. By adopting the three-plate die, a complex secondary ejection mechanism which is difficult to maintain is arranged on the top plate side, so that pouring gate condensed materials adopting a fine water gap type can be used for stripping materials from the stripper plate, and subsequent injection molding processing is not affected.

Disclosure of Invention

The utility model mainly aims at the problems and provides a die pre-resetting structure and an optical fiber connector die applying the same, which aim to solve the technical problems in the background technology.

In order to achieve the above purpose, the utility model provides a die pre-resetting structure, which comprises a top plate, a front template, a rear template, a thimble assembly, a resetting rod and a return rod; an elastic reset piece is arranged between the top plate and the front template; one end of the reset rod is fixed on the top plate, and the reset rod is arranged in a sliding penetrating manner on the front template; one end of the return rod is fixed to the thimble assembly, and the return rod penetrates through the rear template; when the front template and the rear template are assembled, the end part of the reset rod abuts against the end part of the return rod to reset the thimble assembly.

The optical fiber connector die comprises the die pre-resetting structure, a front die insert pin and a rear die insert pin; one end of the front mould insert needle is fixed on the top plate, and the front mould insert needle penetrates through the front mould plate; one end of the rear die insert pin is fixed on the thimble assembly, and the rear die insert pin penetrates through the rear template; when the front template and the rear template are assembled, the front mold insert pin, the rear mold insert pin and/or the front template and/or the rear template enclose a cavity for forming the optical fiber connector.

Further, the front mold insert pin is provided with a molding part for molding an inner hole of the optical fiber connector, and the end part of the rear mold insert pin is provided with an alignment hole for accommodating the end part of the molding part to extend in.

Further, the diameter of the forming part is 0.16 mm, and the length is 14 mm.

Further, the device comprises a top plate sleeve arranged on the top plate, wherein the top plate sleeve is provided with a through hole for sleeving the outer wall of the front die insert needle, and the front die insert needle and the top plate sleeve are relatively movable.

Further, the front mold comprises a front mold core arranged on the front mold plate and a rear mold core arranged on the rear mold plate; the front mold core is provided with a through hole which is sleeved on the outer wall of the front mold insert pin, and the front mold insert pin and the front mold core are relatively movable; the rear film mold core is provided with a through hole which is sleeved on the outer wall of the rear mold insert pin, and the rear mold insert pin and the rear film mold core are relatively movable; when the front template and the rear template are assembled, the cavity is formed by enclosing the outer wall of the front mold core, the end part of the rear mold insert pin, the end surface of the front mold core, the inner wall of the through hole of the rear mold core and the rear template.

Further, the thimble assembly comprises a thimble plate, a thimble bottom plate and a discharging thimble; the ejector pin plate and the ejector pin bottom plate are used for installing and fixing the unloading ejector pins and the rear die insert pins; the rear template is provided with a discharge hole which penetrates through and accommodates the movement of the discharge thimble.

Further, the ejector plate is provided with an ejector plate sleeve for sleeving the rear die insert pin.

Further, the sprue bush assembly is mounted on the top plate and penetrates through the front template; the number of the cavities is eight, and the cavities are uniformly distributed around the center of the sprue bush assembly; the rear mold plate is provided with eight first sub-runners communicated with the main runner of the sprue bush assembly, and the end parts of the first sub-runners are symmetrically arc-shaped second sub-runners communicated with the side face of the cavity.

Further, the sprue bush assembly comprises a sprue bush and a positioning ring; the locating ring is connected with the top plate, and the sprue bush and the front die insert pin are pressed on the top plate.

Further, the device comprises an alignment device, a travel switch, a bottom plate, a die leg and a front guide post; the bottom plate is connected with the rear template through the die legs; one end of the front guide post is arranged on the top plate, and the front template, the rear template and the die feet are in sliding fit with the front guide post; the alignment device is arranged on the side wall of the front template and the side wall of the rear template; the touch piece and the induction piece of the travel switch are respectively arranged on the thimble assembly and the bottom plate, and when the front template and the rear template are assembled, the touch piece and the induction piece of the travel switch are propped against each other; an elastic reset piece is arranged between the thimble bottom plate and the bottom plate; the elastic reset piece is a spring or a high-strength adhesive.

Compared with the prior art, the die pre-reset structure and the optical fiber connector die using the same can be compared with a two-plate die and a three-plate die, the stripping plate in the three-plate die and the secondary ejection mechanism for assisting pouring gate solidification stripping are eliminated, the advantage of smaller sprue marks of the three-plate die can be obtained, the sprue and pouring gate structure of the thin sprue can be arranged on the front die plate, the advantages of simple structure and low manufacturing cost of the two-plate die can be obtained, and the reset efficiency and the precision of the thimble assembly can be improved.

Drawings

Fig. 1 is a schematic diagram of a die pre-resetting structure and an optical fiber connector die using the same.

Fig. 2 is an enlarged view at a of fig. 1.

Fig. 3 is a cross-sectional view of a front mold insert of an optical fiber splice die of the present utility model.

Fig. 4 is a cross-sectional view of a rear mold insert of an optical fiber splice die of the present utility model.

Fig. 5 is a cross-sectional view of a top plate sleeve of an optical fiber splice module according to the present utility model.

Fig. 6 is a cross-sectional view of a front mold core of an optical fiber splice module according to the present utility model.

FIG. 7 is a cross-sectional view of a rear film core of an optical fiber splice module according to the present utility model.

FIG. 8 is a cross-sectional view of a thimble plate sleeve of an optical fiber connector mold of the present utility model.

Fig. 9 is a side view of an optical fiber splice die of the present utility model.

FIG. 10 is a top view of an optical fiber splice module of the present utility model with the top panel and front template removed.

Fig. 11 is an enlarged view at B of fig. 10.

FIG. 12 is a top plan view of an optical fiber splice module according to the present utility model.

Reference numerals shown in the drawings: 1. a top plate; 2. a front template; 3. a rear template; 310. a discharge hole; 320. a first sub-flow path; 330. a second shunt; 4. a thimble assembly; 410. a needle ejection plate; 420. a thimble bottom plate; 5. a reset lever; 6. a return bar; 7. a front mould is inlaid with a needle; 710. a molding part; 8. a rear mould is inlaid with a needle; 810. an alignment hole; 9. a cavity; 10. a top plate sleeve; 11. a front mold core; 12. a rear film mold core; 13. a needle ejection plate sleeve; 14. a sprue bush assembly; 1401. a sprue bush; 1402. a positioning ring; 15. an alignment device; 16. a travel switch; 1601. a touch member; 1602. an induction member; 17. a bottom plate; 18. a mold foot; 19. a front guide post; 20. a rear guide post; 21. and (5) guiding the sleeve.

Detailed Description

Referring to fig. 1 and 9, the present embodiment provides a pre-reset structure of a mold, which includes a top plate 1, a front mold plate 2, a rear mold plate 3, a thimble assembly 4, a reset rod 5, and a return rod 6; an elastic reset piece (not shown) is arranged between the top plate 1 and the front template 2; one end of the reset rod 5 is fixed on the top plate 1, and the reset rod 5 is arranged in a sliding manner through the front template 2; one end of the return rod 6 is fixed on the thimble assembly 4, and the return rod 6 penetrates through the rear template 3; when the front template 2 and the rear template 3 are assembled, the end part of the reset rod 5 abuts against the end part of the return rod 6 to reset the thimble assembly 4.

The front and rear templates 2, 3 generally function in a mold to form a cavity of a molded product, and the joint surfaces of the front and rear templates 2, 3 are parting surfaces.

Because the elastic reset piece is arranged between the top plate 1 and the front template 2, when the front template 2 and the rear template 3 cancel the die assembly, the top plate 1 and the front template 2 are converted into a mutually-far-away state from each other by the self elastic force of the elastic reset piece, and in the process, the front template 2 is far away from the top plate 1 along the guide of the reset rod 5 due to the existence of the reset rod 5.

Because the front template 2 moves relative to the top plate 1 under the elastic pushing of the elastic resetting piece, the front template 2 plays a role in unloading pouring gate solidification materials and pouring gates, and the formed product is separated from the cavity of the front template 2. The problem that a traditional die is required to be provided with a complex and difficult-to-maintain secondary ejection mechanism on the side of the top plate 1 is avoided, and through the design, an auxiliary device on the periphery of the traditional die is omitted, so that the manufacturing cost of the die is reduced, and the convenience of maintenance is improved.

Therefore, when the press machine cancels the die assembly of the front die plate 2 and the rear die plate 3, only a traditional ejection mechanism is needed to push the ejector pin assembly 4, so that the product in the cavity 9 is ejected from the parting surface.

When the demolding of the products in the cavity and the pouring gate solidification materials is finished, the front template 2 and the rear template 3 are required to be clamped, and the ejector pin assembly 4 is reset, the front template 2 is propped against the top plate 1 under the elastic action of the elastic reset piece, so that the clamping efficiency of the front template 2 and the rear template 3 is improved, and the clamping time is shortened; under the drive of a press and an ejection mechanism, the end part of the reset rod 5 is abutted against the end part of the return rod 6 to pre-reset the thimble assembly 4, the rear template 3 moves towards the front template 2 under the guide of the return rod 6, and finally the front template 2 compresses an elastic reset piece, and the front template 2 and the rear template 3 are accurately clamped. The die is corresponding to the return rod 6 through the reset rod 5, so that the die assembly accuracy of the front die plate 2 and the rear die plate 3 is greatly improved, and the die assembly and thimble assembly 4 reset efficiency is improved.

This kind of novel mould structure compares two-plate mould and three-plate mould, has not only cancelled the stripper plate among the three templates to and supplementary runner congeals the secondary ejection mechanism that expects to take off, has obtained the advantage that can set up the smaller thin mouth of a river of runner trace of three-plate mould moreover, can set up the runner of thin mouth of a river, runner structure on preceding template 2, and has obtained two-plate mould simple structure, low in manufacturing cost's advantage, can also promote thimble assembly 4 efficiency and precision that resets.

Referring to fig. 1-12, an optical fiber connector mold includes a mold pre-reset structure as described above, and further includes a front mold insert pin 7 and a rear mold insert pin 8; one end of the front mould insert needle 7 is fixed on the top plate 1, and the front mould insert needle 7 penetrates through the front mould plate 2; one end of the rear die insert pin 8 is fixed on the thimble assembly 4, and the rear die insert pin 8 penetrates through the rear die plate 3; when the front template 2 and the rear template 3 are assembled, the front mold insert pin 7, the rear mold insert pin 8 and the front template 2 and/or the rear template 3 enclose a cavity 9 for forming the optical fiber connector.

The optical fiber connector is a precisely centered cylinder in the optical fiber connector plug, and has a micro-hole in the center for fixing the optical fiber. The connector manufactured by the optical fiber connector is a detachable and classified optical fiber movable connector, so that the connection, conversion and scheduling of the optical channel are more flexible, and the optical fiber connector can be used for debugging and maintaining an optical communication system.

The optical fiber connector die is an important guarantee device for the production precision of the optical fiber connector, the structure of the existing optical fiber connector die is complex, the existing optical fiber connector die always depends on an imported die, the manufacturing cost is high, and the maintenance is difficult.

When the front template 2 and the rear template 3 are in a die closing state, the top plate 1 and the front template 2 are converted into a clearance state from a bonding state by utilizing the self elastic force of the elastic reset piece, and in the process, the front template 2 is far away from the top plate 1 along the guide of the reset rod 5 due to the existence of the reset rod 5.

The front template 2 moves relative to the front mould insert needle 7 under the elastic pushing of the elastic resetting piece, so that the front template 2 plays a role in unloading, and the formed optical fiber connector connected with the front mould insert needle 7 is separated from the front mould insert needle 7. The problem that a traditional die is required to be provided with a complex secondary ejection mechanism which is difficult to maintain on the side of the top plate 1 is avoided, through the design, an auxiliary device on the periphery of the traditional die is simplified, the manufacturing cost of the die is reduced, and the convenience of maintenance is improved.

When the press machine cancels the die assembly of the front template 2 and the rear template 3, only a traditional ejection mechanism is needed to push the ejector pin assembly 4, the rear die insert pin 8 connected with the ejector pin assembly 4 moves towards the front template 2 relative to the rear template 3, and the product in the cavity 9 is ejected out of the parting surface.

When the demolding of the optical fiber joint product and the pouring gate gel in the cavity 9 is completed, the front template 2 and the rear template 3 are required to be assembled, and the ejector pin assembly 4 is reset, under the driving of the press and the ejection mechanism, the end part of the reset rod 5 is firstly abutted against the end part of the return rod 6 to pre-reset the ejector pin assembly 4, the rear template 3 moves towards the front template 2 under the guiding of the return rod 6, and finally the front template 2 compresses the elastic reset piece, and the front template 2 and the rear template 3 are accurately assembled. The die is corresponding to the return rod 6 through the reset rod 5, so that the die assembly accuracy of the front die plate 2 and the rear die plate 3 is greatly improved, the die assembly and the reset efficiency of the ejector pin assembly 4 are improved, and the influence on the precision of manufacturing the optical fiber connector caused by excessive retention of the rear die insert needle 8 and the unloading ejector pin connected with the ejector pin assembly 4 in the cavity 9 after die assembly is avoided.

Referring to fig. 1-4, the front mold insert 7 is provided with a molding portion 710 for molding an inner hole of the optical fiber connector, and the end portion of the rear mold insert 8 is provided with an alignment hole 810 for receiving an end portion of the molding portion 710. The forming section 710 has a diameter of 0.16 mm and a length of 14 mm.

The rear insert 8 is designed with an alignment hole 810 into which the end portion of the molding portion 710 is inserted, thereby providing an alignment function and protecting the elongated structure of the molding portion 710.

Thanks to the application of the mold pre-resetting structure, when the front mold plate 2 and the rear mold plate 3 are clamped, the front mold plate 2 and the rear mold plate 3 are clamped under the elastic pushing action of the elastic resetting piece, the front mold plate 2 and the rear mold plate 3 are clamped firstly, the resetting rod 5 of the front mold insert needle 7 connected with the top plate 1 penetrating through the front mold plate 2 after clamping is guided downwards, the end part of the forming part 710 can be smoothly and accurately inserted into the alignment hole 810, the top plate 1 drives the resetting rod 5 to continuously move forwards, the resetting rod 5 abuts against the return rod 6, the ejector pin assembly 4 and the rear mold insert needle 8 arranged on the ejector pin assembly 4 are reset, and the excessive extension into a runner and a cavity is prevented, so that the size of an injection molding product is influenced. The pre-reset structure greatly avoids the deflection when the front die insert needle 7 is matched with the rear die insert needle 8, and further effectively avoids the deformation and breakage of the forming part 710 with the ultra-slender structure, which has the diameter of 0.16 mm and the length of 14 mm, during floating during collision/insertion. The precision of the ultra-precise micro product of the optical fiber connector molded by the die is ensured, and the die has enough service life.

Referring to fig. 1 and 5, the device comprises a top plate sleeve 10 mounted on the top plate 1, wherein the top plate sleeve 10 is provided with a through hole for sleeving the outer wall of the front mold insert needle 7, and the front mold insert needle 7 and the top plate sleeve 10 are relatively movable.

In some embodiments, the top plate cover 10 is mounted to the top plate 1 in a mosaic form.

Referring to fig. 1 and 2, and fig. 6 and 7, the mold comprises a front mold core 11 mounted on the front mold plate 2, and a rear mold core 12 mounted on the rear mold plate 3; the front mold core 11 is provided with a through hole sleeved on the outer wall of the front mold insert pin 7, and the front mold insert pin 7 and the front mold core 11 are relatively movable; the rear film mold core 12 is provided with a through hole sleeved on the outer wall of the rear mold insert needle 8, and the rear mold insert needle 8 and the rear film mold core 12 are accommodated to move relatively; when the front mold plate 2 and the rear mold plate 3 are assembled, the outer wall of the front mold core 11, the end part of the rear mold insert 8, the end surface of the front mold core 11, the inner wall of the through hole of the rear mold core 12 and the rear mold plate 3 are enclosed to form the cavity 9.

Referring to fig. 1 and 9, the ejector assembly 4 includes an ejector plate 410, an ejector plate 420, and an ejector pin (not shown); the ejector pin plate 410 and the ejector pin bottom plate 420 are used for installing and fixing the unloading ejector pin and the rear die insert pin 8; the rear template 3 is provided with a discharging hole 310 which penetrates through and accommodates the movement of the discharging thimble.

The ejector pin mainly plays a role in ejecting the condensed material in the runner, and the rear die insert pin 8 not only serves as a molding structure for molding the optical fiber connector, but also plays a role in ejecting the optical fiber connector from the cavity 9 during demolding.

Referring to fig. 1-8, the ejector plate 410 is provided with an ejector plate sleeve 13 for sleeving the rear mold insert 8.

By arranging the top plate sleeve 10, the front die core 11, the rear die core 12 and the thimble plate sleeve 13 which are respectively matched with the front die insert needle 7 and the rear die insert needle 8 in the top plate 1, the front die plate 2, the rear die plate 3 and the thimble plate 410 in the die respectively, the whole die is prevented from being manufactured by adopting high-cost materials, and only high-quality materials with high cost are needed to be adopted in the key structures, and the top plate 1, the front die plate 2, the rear die plate 3 and other secondary parts can be manufactured by adopting materials with low cost which meet the requirements; therefore, after the front die insert needle 7, the rear die insert needle 8, the top plate sleeve 10, the front die core 11, the rear die core 12 and the thimble plate sleeve 13 are worn, only corresponding accessories can be replaced, so that the maintenance convenience of the die is improved, and the maintenance cost is reduced.

Referring to fig. 1 and 10-12, the sprue bush assembly 14 is mounted on the top plate 1, and the sprue bush assembly 14 penetrates through the front mold plate 2; the number of the cavities 9 is eight and the cavities are uniformly distributed around the center of the sprue bush assembly 14; the rear mold plate 3 is provided with eight first sub-runners 320 communicated with the main runner of the sprue bush assembly 14, and the end parts of the first sub-runners 320 are divided into symmetrical arc-shaped second sub-runners 330 which are communicated with the side surface of the cavity 9.

The sprue bush assembly 14 has the main flow channels radiated by the centers of the eight first sub flow channels 320, the second sub flow channels 330 are used for annular multi-point glue feeding, and through the design, the die is an eight-cavity die, eight optical fiber connectors can be formed through one-time injection molding, the production efficiency is high, and the injection quantity and injection force are balanced by arranging two second sub flow channels 330 on the side face of each cavity 9 for feeding molten materials, so that the quality of the optical fiber connectors is improved.

Referring to fig. 1 and 12, the sprue bush assembly 14 includes a sprue bush 1401 and a retainer 1402; the retainer 1402 is connected to the top plate 1, and the sprue bush 1401 and the front mold insert pin 7 are press-fitted to the top plate 1.

By means of the design, when the parts, such as the sprue bush 1401, the front die insert pin 7 and the top plate bush 10, which are easy to be impacted or frequently rubbed are required to be replaced, maintenance and replacement can be performed only by disconnecting the positioning ring 1402 from the top plate 1, and the cost is reduced.

Referring to fig. 1 and 9, the positioning device comprises a positioning device 15, a travel switch 16, a bottom plate 17, a die leg 18 and a front guide post 19; connecting the bottom plate 17 with the rear template 3 through the die legs 18; one end of the front guide post 19 is mounted on the top plate 1, and the front template 2, the rear template 3 and the die feet 18 are in sliding fit with the front guide post 19; the alignment device 15 is arranged on the side wall of the front template 2 and the rear template 3; the touching piece 1601 and the sensing piece 1602 of the travel switch 16 are respectively arranged on the thimble assembly 4 and the bottom plate 17, and when the front template 2 and the rear template 3 are matched, the touching piece 1601 and the sensing piece 1602 of the travel switch 16 are propped against each other; preferably, the elastic reset piece is a spring or a high-strength adhesive.

When the ejector pin assembly 4, the rear mold insert pin 8 and the discharging ejector pin eject out the condensation materials in the optical fiber connector and the flow channel, the reset is carried out, the end part of the reset rod 5 abuts against the end part of the return rod 6 to reset the ejector pin assembly 4, the travel switch 16 is used for sensing whether the ejector pin assembly 4 is in place or not and sending sensed information to an upper computer for processing, judgment is carried out according to the contact relation between the touch piece 1601 and the sensing piece 1602, if the reset is not in place, the reset and the die assembly are continued, and if the ejector pin assembly 4 is reset in place, the cyclic processing can be carried out.

The alignment device 15 guides and aligns the front template 2 and the rear template 3 to ensure the position precision of the cavity 9 during the die assembly; the service life of the die is ensured, and the output quality of the optical fiber connector is improved.

Preferably, an elastic reset member (not shown) is disposed between the ejector pin base plate 420 and the base plate 17.

Through also being equipped with the elasticity piece that resets between thimble bottom plate 420 with bottom plate 17, after the die press cancellation to front mould board 2 with the compound die of back template 3, the elasticity piece that resets utilizes elastic force, promotes thimble bottom plate 420 and removes towards back template 3, promotes drawing of patterns efficiency. But also has the pre-resetting function, namely, the elastic force of the elastic resetting piece pushes the thimble bottom plate 420 to enable the forming part 710 of the front die insert needle 7 to be inserted into the alignment hole 810 of the rear die insert needle 8 and then reset, so that the resetting accuracy is improved, and the front die insert needle 7 and the rear die insert needle 8 are prevented from being damaged.

Referring to fig. 1 and 9, the device further includes a rear guide post 20 and a guide sleeve 21, one end of the rear guide post 20 is mounted on the bottom plate 17, the guide sleeve 21 is mounted on the ejector plate 410 and the ejector bottom plate 420, the guide sleeve 21 is sleeved with the rear guide post 20, and the rear mold plate 3 is provided with a movable hole in sliding fit with the rear guide post 20.

The die adopts a simplified three-plate die blank to realize the processing of a precision piece with high precision requirement.

Claims (10)

1. The die pre-resetting structure is characterized by comprising a top plate, a front template, a rear template, a thimble assembly, a resetting rod and a return rod; an elastic reset piece is arranged between the top plate and the front template; one end of the reset rod is fixed on the top plate, and the reset rod is arranged in a sliding penetrating manner on the front template; one end of the return rod is fixed to the thimble assembly, and the return rod penetrates through the rear template; when the front template and the rear template are assembled, the end part of the reset rod abuts against the end part of the return rod to reset the thimble assembly.

2. An optical fiber connector mold, comprising the mold pre-resetting structure according to claim 1, and further comprising a front mold insert pin and a rear mold insert pin; one end of the front mould insert needle is fixed on the top plate, and the front mould insert needle penetrates through the front mould plate; one end of the rear die insert pin is fixed on the thimble assembly, and the rear die insert pin penetrates through the rear template; when the front template and the rear template are assembled, the front mold insert pin, the rear mold insert pin and/or the front template and/or the rear template enclose a cavity for forming the optical fiber connector.

3. An optical fiber splice die as defined in claim 2, wherein said front mold insert is provided with a molding portion for molding an inner bore of the optical fiber splice, and said rear mold insert is provided with an alignment hole at an end portion thereof for receiving an end portion of said molding portion.

4. A fiber optic splice module as claimed in claim 3, wherein the profiled section has a diameter of 0.16 mm and a length of 14 mm.

5. The optical fiber connector mold according to claim 2, comprising a top plate sleeve mounted on the top plate, wherein the top plate sleeve is provided with a through hole for sleeving the outer wall of the front mold insert pin, and the front mold insert pin and the top plate sleeve are relatively movable.

6. The optical fiber splice module of claim 2, including a front mold core mounted to said front mold plate, a rear mold core mounted to said rear mold plate; the front mold core is provided with a through hole which is sleeved on the outer wall of the front mold insert pin, and the front mold insert pin and the front mold core are relatively movable; the rear film mold core is provided with a through hole which is sleeved on the outer wall of the rear mold insert pin, and the rear mold insert pin and the rear film mold core are relatively movable; when the front template and the rear template are assembled, the cavity is formed by enclosing the outer wall of the front mold core, the end part of the rear mold insert pin, the end surface of the front mold core, the inner wall of the through hole of the rear mold core and the rear template.

7. The optical fiber splice module of claim 2, wherein the ejector pin assembly comprises an ejector pin plate, an ejector pin base plate, and an ejector pin for unloading; the ejector pin plate and the ejector pin bottom plate are used for installing and fixing the unloading ejector pins and the rear die insert pins; the rear template is provided with a discharge hole which penetrates through and accommodates the movement of the discharge thimble; the ejector plate is provided with an ejector plate sleeve for sleeving the rear die insert pin.

8. The fiber optic splice module of claim 2, including a sprue bush assembly mounted to said top plate, said sprue bush assembly extending through said front template; the number of the cavities is eight, and the cavities are uniformly distributed around the center of the sprue bush assembly; the rear mold plate is provided with eight first sub-runners communicated with the main runner of the sprue bush assembly, and the end parts of the first sub-runners are symmetrically arc-shaped second sub-runners communicated with the side face of the cavity.

9. The fiber optic splice module of claim 8, wherein the sprue bush assembly includes a sprue bush, a retainer ring; the locating ring is connected with the top plate, and the sprue bush and the front die insert pin are pressed on the top plate.

10. The optical fiber connector mold according to claim 7, comprising an alignment device, a travel switch, a bottom plate, a mold foot, and a front guide post; the bottom plate is connected with the rear template through the die legs; one end of the front guide post is arranged on the top plate, and the front template, the rear template and the die feet are in sliding fit with the front guide post; the alignment device is arranged on the side wall of the front template and the side wall of the rear template; the touch piece and the induction piece of the travel switch are respectively arranged on the thimble assembly and the bottom plate, and when the front template and the rear template are assembled, the touch piece and the induction piece of the travel switch are propped against each other; an elastic reset piece is arranged between the thimble bottom plate and the bottom plate; the elastic reset piece is a spring or a high-strength adhesive.