Ferrule mold and method of using same

Abstract

The application relates to the technical field of molds and discloses a plug core mold, which comprises a mold body, a plug pin block and a needle seat. The mold body is internally formed with a mold cavity. One end of the plug pin block is connected with a guide pin which extends into the mold cavity. The end of the guide pin away from the plug pin block extends out of the mold cavity. The needle seat is arranged on the other side of the mold body relative to the plug pin block. The needle seat comprises a first needle seat and a second needle seat. The first needle seat comprises a first guide pin accommodating groove which is arranged towards the second needle seat. The second needle seat comprises a second guide pin accommodating groove which is arranged opposite to the first guide pin accommodating groove. The first guide pin accommodating groove and the second guide pin accommodating groove form a first guide hole which accommodates the guide pin. The needle seat is designed as a split structure composed of the first needle seat and the second needle seat. In the molding process, the end of the guide pin extending out of the mold cavity is accommodated in the first guide hole. The guide pin can be wrapped more tightly, the gap between the guide pin and the first guide hole is reduced, the injection flow into the first guide hole is effectively reduced, and thus the MT plug core has excellent position degree.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, and in particular to a core insert mold and a method for using the same. Background Art

[0002] As the core component of multi-fiber connectors, MT ferrules offer high throughput and high fiber routing density, making them widely used in optical communications. Parameters such as the position, diameter, and opening angle of the fiber hole in the MT ferrule significantly impact connector performance, requiring the molds used to produce them to possess extremely high precision.

[0003] Currently, the most common molds for MT ferrules consist of the following components: an upper mold, a lower mold, a ferrule block, a core pin, a guide pin, and a pin holder. MT ferrules have a positioning accuracy specification, which refers to the deviation between the center of the fiber hole between the two guide holes of the MT ferrule and the reference line. The smaller the deviation, the better the positioning accuracy. During MT ferrule molding, the guide pins fit into the guide pin holes in the pin holder. Because the guide pins and the guide holes in the pin holder have a clearance fit, molten injection material easily flows into the guide pin holes, causing the guide pins to shift slightly during the molding process, ultimately deteriorating the positioning accuracy of the MT ferrule. Summary of the Invention

[0004] The purpose of the present invention is to provide a ferrule mold and a method for using the same, which can wrap the guide pin more tightly, reduce the gap between the guide pin and the guide hole, and effectively reduce the injection material flowing into the guide hole, thereby ensuring that the MT ferrule has excellent position accuracy.

[0005] In order to achieve the above object, the present invention provides a core insert mold, comprising:

[0006] A mold body, wherein a mold cavity is formed inside the mold body;

[0007] A pin block, the pin block being arranged on one side of the mold body, and a core pin and a guide pin being arranged on an end surface of the pin block facing the mold cavity, the core pin extending into the mold cavity, and the guide pin passing through the mold cavity and extending to the other side of the mold body opposite to the pin block;

[0008] The needle seat is arranged on the other side of the mold body relative to the pin block, and the needle seat includes a first needle seat and a second needle seat that cooperate with each other. The first needle seat includes a first guide needle accommodating groove opened toward the second needle seat, and the second needle seat includes a second guide needle accommodating groove arranged opposite to the first guide needle accommodating groove. The first guide needle accommodating groove and the second guide needle accommodating groove form a first guide hole for accommodating the guide needle.

[0009] The ferrule mold of the embodiment of the present invention has the following advantages compared with the prior art: a mold body is provided with a pin block and a pin seat on both sides, the guide pin on the pin block extends to the pin seat through the mold cavity of the mold body, the pin seat includes a first pin seat and a second pin seat, the first pin seat and the second pin seat are provided with a first guide pin accommodating groove and a second guide pin accommodating groove opposite to each other, the first guide pin accommodating groove and the second guide pin accommodating groove forming a first guide hole when the first pin seat and the second pin seat are combined, and the first guide hole is used to fix one end of the guide pin extending out of the mold cavity; by designing the pin seat as a split structure consisting of the first pin seat and the second pin seat, during the molding process, the end of the guide pin extending out of the mold cavity extends into the first guide hole surrounded by the first guide pin accommodating groove of the first pin seat and the second guide pin accommodating groove of the second pin seat, when the first pin seat and the second pin seat are fixed to each other, the guide pin can be wrapped more tightly, the gap between the guide pin and the first guide hole is reduced, and the injection material flowing into the first guide hole is effectively reduced, thereby ensuring that the MT ferrule has excellent position accuracy.

[0010] The insert mold of the embodiment of the present invention has a first opening portion opened in the width direction of the first needle seat, a first adjustable insert is arranged in the first opening portion, a second opening portion opened in the width direction of the second needle seat, a second adjustable insert arranged opposite to the first adjustable insert is arranged in the second opening portion, the first adjustable insert includes a first groove opened toward the second adjustable insert, the second adjustable insert includes a second groove symmetrically arranged with the first groove, and the first groove and the second groove form the second guide hole when the first adjustable insert and the second adjustable insert are combined.

[0011] In the insert mold of an embodiment of the present invention, in the width direction of the needle seat, a first spacer for adjusting the first adjustable insert is provided between the first adjustable insert and the inner wall of the first opening, and a second spacer for adjusting the second adjustable insert is provided between the second adjustable insert and the second opening.

[0012] In the ferrule mold of the embodiment of the present invention, in the width direction of the needle seat, the distance between the first adjustable insert and the first opening is W1, and the distance between the second adjustable insert and the second opening is W2, and W1 and W2 satisfy:

[0013] 0.1mm≤W1≤0.5mm, 0.1mm≤W2≤0.5mm.

[0014] In the insert mold of the embodiment of the present invention, a first fastening screw hole communicating with the first opening portion is provided in the length direction of the first needle seat, a first fastening bolt is passed through the first fastening screw hole, and one end of the first fastening bolt facing the first opening portion abuts against the first adjustable insert; a second fastening screw hole communicating with the second opening portion is provided in the length direction of the second needle seat, a second fastening bolt is passed through the second fastening screw hole, and one end of the second fastening bolt facing the second opening portion abuts against the second adjustable insert.

[0015] In the core insert mold of the embodiment of the present invention, the mold body includes a first mold body and a second mold body arranged opposite to each other, the mold cavity is formed between the first mold body and the second mold body, and guide needle cavities for the guide needle to pass through are further formed on both sides of the mold cavity.

[0016] In the ferrule mold of an embodiment of the present invention, the needle seat includes a locking screw hole that penetrates the first needle seat and the second needle seat in the thickness direction thereof, and a locking bolt is passed through the locking screw hole to fix the first needle seat and the second needle seat.

[0017] In the ferrule mold of the embodiment of the present invention, a protrusion is formed on the end surface of the pin block facing the mold body, and the protrusion is inclined toward the end surface of the mold body in a direction toward the pin block.

[0018] In the ferrule mold of the embodiment of the present invention, the angle between the inclined surface of the protrusion and the end surface of the pin block on one side facing the mold body is 8°±0.15°.

[0019] The present invention provides a method for using an insert mold, using the insert mold described in any one of the above embodiments, comprising the following steps:

[0020] The pin block is arranged on one side of the mold body, so that one end of the guide pin connected to the pin block passes through the mold cavity and extends outside the mold cavity;

[0021] The second needle seat is arranged on the other side of the mold body, and the end of the guide pin extending from the mold cavity is accommodated in the second guide pin accommodating groove. Then, the first needle seat and the second needle seat are combined, and the first adjustable insert is arranged in the first opening portion, and the second adjustable insert is arranged in the second opening portion, so that the end of the guide pin extending from the mold cavity is accommodated in the first guide hole and the second guide hole in sequence.

[0022] Adjusting the positions of the first adjustable insert and the second adjustable insert in the thickness direction and the width direction of the needle seat so that the axes of the guide needle and the core needle are parallel to each other and located on the same horizontal plane, then fixing the first adjustable insert and the second adjustable insert, and finally locking the first upper needle seat and the second needle seat;

[0023] The molds are closed, and the molding material is injected into the mold cavity and solidified.

[0024] Open the mold.

[0025] Compared with the prior art, a ferrule mold according to an embodiment of the present invention has the following advantages: by designing the needle holder as a split structure consisting of a first needle holder and a second needle holder, during the molding process, the end of the guide pin extending out of the mold cavity enters a first guide hole formed by the first guide pin receiving groove of the first needle holder and the second guide pin receiving groove of the second needle holder for fixation. This allows the guide pin to be more tightly wrapped, reducing the gap between the guide pin and the first guide hole, effectively reducing the flow of injection material into the first guide hole, thereby ensuring excellent positioning accuracy of the MT ferrule. After extending out of the first guide hole, the guide pin enters a second guide hole formed by the combination of the first adjustable insert and the second adjustable insert. When the guide pin deviates in the thickness or width direction of the needle holder, the guide pin deviation problem can be solved by adjusting the positions of the first and second adjustable inserts in different directions relative to the needle holder, thereby improving positioning accuracy and further ensuring excellent positioning accuracy of the MT ferrule.

[0026] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 1 is a schematic diagram of the overall structure of the core insert mold according to an embodiment of the present invention;

[0028] Figure 2 Schematic diagram of the exploded structure of the core insert mold according to an embodiment of the present invention;

[0029] Figure 3 Schematic diagram of the exploded structure of the needle seat of the ferrule mold according to an embodiment of the present invention;

[0030] Figure 4 1 is a schematic structural diagram of a pin block of an insert mold according to an embodiment of the present invention;

[0031] Figure 5 Schematic diagram of the core insert mold before molding according to an embodiment of the present invention;

[0032] Figure 6 Schematic diagram of the MT ferrule mold after forming the ferrule according to an embodiment of the present invention;

[0033] Figure 7 1 is a schematic top view of the core insert mold according to an embodiment of the present invention without the first mold body;

[0034] Figure 8 FIG. 4 is a schematic structural diagram of an MT plug according to an embodiment of the present invention.

[0035] In the figure, 1. mold body; 11. mold cavity; 12. boss; 13. first mold body; 14. second mold body; 15. guide pin cavity; 2. pin block; 21. guide pin; 22. raised portion; 23. guide pin hole; 3. needle seat; 31. first needle seat; 311. first guide pin accommodating groove; 312. first opening; 313. first fastening screw hole; 314. first fastening bolt; 32. second needle seat; 321. second guide pin accommodating groove; 322. second opening; 323. second fastening screw hole; 324. second fastening bolt; 33. first guide hole; 34. first adjustable insert; 341. first groove; 342. first spacer; 35. second adjustable insert; 351. second groove; 36. locking screw hole; 37. locking bolt; 4. insert. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0038] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] like Figure 1 and Figure 2As shown, a core inserting mold according to a preferred embodiment of the present invention includes a mold body 1, a pin block 2 and a pin seat 3. A mold cavity 11 is formed inside the mold body 1, and a boss 12 is provided in the mold cavity 11. The boss 12 is provided with a core guide hole; the mold cavity 11 is designed with a front opening and a rear opening at both ends. When the mold is closed, the pin block 2 is covered at the front opening in a manner of blocking the mold cavity 11, and the pin seat 3 is covered at the rear opening in a manner of blocking the mold cavity 11; the pin block 2 is arranged on one side of the mold body 1, and a guide pin 21 is provided on the end surface of the pin block 2 facing the mold cavity. There are two guide pins 21, which are symmetrically distributed at both ends of the pin block 2 in the width direction. The guide pins 21 pass through the mold cavity 11 and extend to the other side of the mold body 1 opposite to the pin block 2; further, a guide pin hole 23 for fixing the guide pin 21 is opened on the pin block 2, and a core pin corresponding to the core guide hole is also provided on the side of the pin block 2 facing the mold body 1. When the mold is closed, the core pin is inserted into the core guide hole.

[0041] The needle seat 3 is arranged on the other side of the mold body 1 relative to the pin block 2, and the end of the needle seat 3 facing the mold body 1 extends into the mold cavity 11 when the mold is closed; the needle seat 3 includes a first needle seat 31 and a second needle seat 32 that cooperate with each other, and the first needle seat 31 and the second needle seat 32 are symmetrically arranged in the thickness direction of the needle seat 3 and have the same shape; the first needle seat 31 includes a first guide needle accommodating groove 311 opened toward the second needle seat 32, and the second needle seat 32 includes a second guide needle accommodating groove 321 arranged opposite to the first guide needle accommodating groove 311, and the first guide needle accommodating groove 311 and the second guide needle accommodating groove 321 are both semicircular grooves, and the first guide needle accommodating groove 311 and the second guide needle accommodating groove 321 form a first guide hole 33 for accommodating the guide needle 21, and the inner diameter of the first guide hole 33 matches the outer diameter of the guide needle 21.

[0042] In the present application, the mold body 1 has a pin block 2 and a needle seat 3 on both sides, the guide needle 21 extends to the needle seat 3 through the mold cavity 11 of the mold body 1, and the first needle seat 31 and the second needle seat 32 are provided with a first guide needle receiving groove 311 and a second guide needle receiving groove 321 opposite to each other. The first guide needle receiving groove 311 and the second guide needle receiving groove 321 form a first guide hole 33 when the first needle seat 31 and the second needle seat 32 are combined. The first guide hole 33 is used to fix one end of the guide needle 21 extending out of the mold cavity 11; by designing the needle seat 3 to be composed of the first needle seat 31 and The split structure formed by the second needle seat 32 allows the end of the guide pin 21 extending out of the mold cavity 11 to extend into the first guide hole 33 surrounded by the first guide pin accommodating groove 311 of the first needle seat 31 and the second guide pin accommodating groove 321 of the second needle seat 32 during the molding process. When the first needle seat 31 and the second needle seat 32 are fixed to each other, the guide pin 21 can be wrapped more tightly, reducing the gap between the guide pin 21 and the first guide hole 33, effectively reducing the flow of injection material into the first guide hole 33, thereby ensuring excellent positioning accuracy of the MT ferrule.

[0043] like Figure 2 and Figure 3 As shown, in some embodiments of the present invention, a first opening portion 312 is opened in the width direction of the first needle seat 31, and the first opening portion 312 is arranged to penetrate in the thickness direction of the first needle seat 31, and a first adjustable insert 34 is arranged in the first opening portion 312, and the first adjustable insert 34 can move in the vertical direction in the first opening, and there are two first opening portions 312 and first adjustable inserts 34, and the two first opening portions 312 are symmetrically arranged at the two ends of the width direction of the first needle seat 31; a second opening portion 322 is opened in the width direction of the second needle seat 32, and the second opening portion 322 is arranged to penetrate in the thickness direction of the second needle seat 32, and a second adjustable insert 35 arranged opposite to the first adjustable insert 34 is arranged in the second opening portion 322, and the second adjustable insert 35 can move in the vertical direction in the second opening; there are two second opening portions 322 and second adjustable inserts 35, and the two second opening portions 322 are symmetrically arranged at the two ends of the width direction of the second needle seat 32. A second guide hole connected to the first guide hole 33 is formed between the first adjustable insert 34 and the second adjustable insert 35. The guide needle 21 passes through the first guide hole 33 and enters the second guide hole. The position of the guide needle 21 can be adjusted by the first adjustable insert 34 and the second adjustable insert 35. When the guide needle 21 is offset in the thickness direction of the needle seat 3, the position of the first adjustable insert 34 and the second adjustable insert 35 in the thickness direction of the needle seat 3 can be adjusted to solve the offset problem of the guide needle 21 and improve the positioning accuracy.

[0044] In some embodiments of the present invention, the first adjustable insert 34 includes a first groove 341 opened toward the second adjustable insert 35, and the second adjustable insert 35 includes a second groove 351 symmetrically arranged with the first groove 341. The first groove 341 and the second groove 351 are both arranged as semicircular grooves. The first groove 341 and the second groove 351 form a second guide hole when the first adjustable insert 34 and the second adjustable insert 35 are combined. The second guide hole is a circular hole position that matches the size of the guide pin 21, which firmly fixes the guide pin 21 and ensures that the relative position of the guide pin 21 and the insert will not change when adjusting the first adjustable insert 34 and the second adjustable insert 35, thereby improving the positioning accuracy of the guide pin 21 and promoting the improvement of its positioning accuracy.

[0045] like Figure 2As shown, in some embodiments of the present invention, a first spacer 342 is defined between the first adjustable insert 34 and the inner wall of the first opening 312 in the width direction of the needle hub 3. The first spacer 342 is used to adjust the relative position between the first adjustable insert 34 and the inner wall of the first opening 312. A second spacer is defined between the second adjustable insert 35 and the second opening 322. The second spacer is used to adjust the relative position between the second adjustable insert 35 and the inner wall of the second opening 322. Due to the presence of the first spacer 342 and the second spacer, the first and second adjustable inserts 34 and 35 can move in the width direction of the needle hub 3. Therefore, when the guide needle 21 deviates in the width direction, the deviation of the guide needle 21 can be corrected by adjusting the positions of the first and second adjustable inserts 34 and 35 in the width direction, thereby improving the positioning accuracy.

[0046] In some embodiments of the present invention, in the width direction of the needle seat 3, the distance between the first adjustable insert 34 and the first opening 312, that is, the width of the first spacer 342 is W1, and the distance between the second adjustable insert 35 and the second opening 322, that is, the width of the second spacer is W2, and W1 and W2 satisfy the following conditions:

[0047] 0.1mm≤W1≤0.5mm, 0.1mm≤W2≤0.5mm.

[0048] When the width W1 of the first spacer 342 and the width W2 of the second spacer meet the above range, the first adjustable insert 34 and the second adjustable insert 35 have sufficient space for movement while ensuring the overall stability of the mold.

[0049] like Figure 2 and Figure 3 As shown, in some embodiments of the present invention, a first fastening screw hole 313 communicating with the first opening portion 312 is opened in the length direction of the first needle seat 31, and a first fastening bolt 314 is passed through the first fastening screw hole 313, and the first fastening bolt 314 abuts against the first adjustable insert 34 at one end facing the first opening portion 312. After the first adjustable insert 34 is adjusted, the first adjustable insert 34 is fixed to ensure that the first adjustable insert 34 is stable during the casting process; a second fastening screw hole 323 communicating with the second opening portion 322 is opened in the length direction of the second needle seat 32, and a second fastening bolt 324 is passed through the second fastening screw hole 323, and the second fastening bolt 324 abuts against the second adjustable insert 35 at one end facing the second opening portion 322. After the second adjustable insert 35 is adjusted, the second adjustable insert 35 is fixed to ensure that the second adjustable insert 35 is stable during the casting process.

[0050] In some embodiments of the present invention, the mold body 1 includes a first mold body 13 and a second mold body 14 arranged opposite to each other. The first mold body 13 and the second mold body 14 are symmetrically arranged in the height direction. A mold cavity 11 is formed between the first mold body 13 and the second mold body 14. The mold cavity 11 is used to form the MT core 4. Guide pin cavities 15 for the guide pin 21 to pass through are also formed on both sides of the mold cavity 11, reserving space for the guide pin 21 to pass through the mold body during the molding process.

[0051] In some embodiments of the present invention, the needle hub 3 includes a locking screw hole 36 extending through the thickness of the first needle hub 31 and the second needle hub 32. A locking bolt 37 is inserted into the locking screw hole 36 to secure the first and second needle hubs 31, 32. Locking the first and second needle hubs 31, 32 by the locking bolt 37 provides a simple structure, secure fixation, and easy disassembly. This allows the first and second needle hubs 31, 32 to more tightly wrap around the guide pin 21, reducing the gap between the guide pin 21 and the first guide hole 33. This effectively reduces the flow of injection material into the first guide hole 33, thereby ensuring excellent positioning accuracy of the MT ferrule 4.

[0052] The MT ferrule 4 is required to have an inclined end face when used. In a traditional mold, the surface of the pin block 2 facing the mold cavity 11 is a flat structure. Therefore, the end face of the product formed by the mold needs to be ground. During the grinding process, the position accuracy will change, and the more grinding, the greater the change in position accuracy.

[0053] like Figure 4 As shown, in some embodiments of the present invention, a raised portion 22 is formed on the end surface of the pin block 2 facing the mold body 1. The raised portion 22 is tilted toward the pin block 2, ultimately forming a wedge shape. This wedge-shaped raised portion 22 directly forms an inclined surface on the end surface of the MT ferrule 4 during molding, eliminating the need for subsequent grinding. By providing the wedge-shaped raised portion 22 on the pin block 2, the grinding effort can be reduced, thereby minimizing positional variations in the MT ferrule 4.

[0054] In some embodiments of the present invention, the angle between the inclined surface of the protrusion 22 and the end face of the pin block 2 facing the mold body 1 is 8°±0.15°. Within this range, the inclination of the end face of the MT ferrule 4 can be controlled within an appropriate range, ensuring the quality of the molded product.

[0055] A preferred embodiment of the present invention further includes a method for using an insert mold, using the insert mold of any one of the above embodiments, comprising the following steps:

[0056] S1. Place the pin block 2 on one side of the mold body 1, so that one end of the guide pin 21 connected to the pin block 2 passes through the mold cavity 11 and extends to the outside of the mold cavity 11;

[0057] S2. Place the second needle seat 32 on the other side of the mold body 1, accommodate the end of the guide pin 21 extending out of the mold cavity 11 in the second guide pin accommodating groove 321, then combine the first needle seat 31 and the second needle seat 32, and place the first adjustable insert 34 in the first opening 312 and the second adjustable insert 35 in the second opening 322, so that the end of the guide pin 21 extending out of the mold cavity 11 is accommodated in the first guide hole 33 and the second guide hole, respectively;

[0058] S3. Adjust the positions of the first adjustable insert 34 and the second adjustable insert 35 in the thickness and width directions of the needle seat 3 so that the axes of the guide needle 21 and the core needle are parallel to each other and located on the same horizontal plane. Then, fix the first adjustable insert 34 and the second adjustable insert 35, and finally lock the first needle seat 31 and the second needle seat 32.

[0059] S4, closing the mold, injecting the injection molding material into the mold cavity 11, and performing solidification molding.

[0060] S5. Open the mold.

[0061] During the molding process, the end of the guide pin 21 extending out of the mold cavity 11 enters the first guide pin accommodating groove 311 of the first needle seat 31 and the second guide pin accommodating groove 321 of the second needle seat 32 to complete the fixation. This can wrap the guide pin 21 more tightly, reduce the gap between the guide pin 21 and the first guide hole 33, and effectively reduce the flow of injection material into the first guide hole 33, thereby ensuring that the MT ferrule 4 has excellent positioning accuracy. After extending out of the first guide hole 33, the guide pin 21 enters the second guide hole formed by the first adjustable insert 34 and the second adjustable insert 35. When the guide pin 21 deviates in the thickness or width direction of the needle seat 3, the position of the first adjustable insert 34 and the second adjustable insert 35 in different directions relative to the needle seat can be adjusted to solve the deviation problem of the guide pin 21, thereby improving the positioning accuracy and further ensuring that the MT ferrule 4 has excellent positioning accuracy.

[0062] In some embodiments of the present invention, in the mold cavity, the core pin is used to form the optical fiber hole of the MT ferrule 4, the guide pin 21 is used to form the guide hole of the MT ferrule 4, the boss 12 is used to form the window portion for adhesive injection of the MT ferrule 4, and the core pin receiving hole is used to form the optical fiber guide groove of the MT ferrule 4.

[0063] The preferred working process of the present invention is as follows: the mold body 1 has a pin block 2 and a needle seat 3 on both sides, the guide pin 21 on the pin block 2 extends to the needle seat 3 through the mold cavity 11 of the mold body 1, and the needle seat 3 includes a first needle seat 31 and a second needle seat 32. The first needle seat 31 and the second needle seat 32 are provided with a first guide pin accommodating groove 311 and a second guide pin accommodating groove 321 opposite to each other. The first guide pin accommodating groove 311 and the second guide pin accommodating groove 321 form a first guide hole 33 when the first needle seat 31 and the second needle seat 32 are combined. The first guide hole 33 is used to fix one end of the guide pin 21 extending out of the mold cavity 11; by designing the needle seat 3 as a divided part consisting of the first needle seat 31 and the second needle seat 32 The cut-type structure allows the end of the guide pin 21 extending out of the mold cavity 11 to enter the first guide hole 33 formed by the first guide pin accommodating groove 311 of the first needle seat 31 and the second guide pin accommodating groove 321 of the second needle seat 32 to be fixed during the molding process, and then enter the second guide hole formed by the first adjustable insert 34 and the second adjustable insert 35. When the guide pin 21 is offset in the thickness or width direction of the needle seat 3, the position of the first adjustable insert 34 and the second adjustable insert 35 in different directions relative to the needle seat 3 can be adjusted to solve the offset problem of the guide pin 21, thereby improving the positioning accuracy and further ensuring that the MT ferrule 4 has excellent positioning accuracy.

[0064] In summary, the embodiments of the present invention provide a ferrule mold and a method for using the same, which can wrap the guide pin 21 more tightly, reduce the gap between the guide pin 21 and the first guide hole 33, effectively reduce the flow of injection material into the first guide hole 33, solve the problem of guide pin 21 deviation, and achieve improved positioning, thereby ensuring that the MT ferrule has excellent positioning.

[0065] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A core insert mold, characterized in that: include: A mold body, wherein a mold cavity is formed inside the mold body; A pin block, the pin block being arranged on one side of the mold body, a core pin and a guide pin being arranged on an end surface of the pin block facing the mold cavity, the core pin extending into the mold cavity, the guide pin passing through the mold cavity and extending to the other side of the mold body relative to the pin block, a raised portion being formed on the end surface of the pin block facing the mold body, the raised portion being arranged obliquely toward the end surface of the mold body in a direction toward the pin block; A needle hub is provided on the other side of the mold body relative to the pin block, the needle hub comprising a first needle hub and a second needle hub that cooperate with each other, the first needle hub comprising a first guide needle receiving groove opening toward the second needle hub, the second needle hub comprising a second guide needle receiving groove arranged opposite to the first guide needle receiving groove, the first guide needle receiving groove and the second guide needle receiving groove forming a first guide hole for receiving the guide needle; The first needle seat has a first opening formed in the width direction thereof, a first adjustable insert being disposed in the first opening, and the second needle seat has a second opening formed in the width direction thereof, a second adjustable insert being disposed in the second opening and being arranged opposite to the first adjustable insert, the first adjustable insert including a first groove formed toward the second adjustable insert, the second adjustable insert including a second groove symmetrically disposed with respect to the first groove, the first groove and the second groove forming a second guide hole when the first adjustable insert and the second adjustable insert are assembled; In the width direction of the first needle seat, a first spacing portion for adjusting the first adjustable insert is provided between the first adjustable insert and the inner wall of the first opening, and a second spacing portion for adjusting the second adjustable insert is provided between the second adjustable insert and the second opening.

2. The insert mold according to claim 1, characterized in that: In the width direction of the first needle seat, the distance between the first adjustable insert and the first opening is W1, and the distance between the second adjustable insert and the second opening is W2. W1 and W2 satisfy: 0.1mm≤W1≤0.5mm, 0.1mm≤W2≤0.5mm.

3. The insert mold according to claim 1, characterized in that: A first fastening screw hole communicating with the first opening is provided in the length direction of the first needle seat, a first fastening bolt is passed through the first fastening screw hole, and one end of the first fastening bolt facing the first opening abuts against the first adjustable insert; a second fastening screw hole communicating with the second opening is provided in the length direction of the second needle seat, a second fastening bolt is passed through the second fastening screw hole, and one end of the second fastening bolt facing the second opening abuts against the second adjustable insert.

4. The insert mold according to claim 1, characterized in that: The mold body includes a first mold body and a second mold body that are arranged opposite to each other. The mold cavity is formed between the first mold body and the second mold body. Guide needle cavities for the guide needle to pass through are further formed on both sides of the mold cavity.

5. The insert mold according to claim 1, characterized in that: The needle seat includes a locking screw hole that penetrates the first needle seat and the second needle seat in the thickness direction of the needle seat, and a locking bolt is passed through the locking screw hole to fix the first needle seat and the second needle seat.

6. The insert mold according to claim 1, characterized in that: An included angle between the inclined surface of the protrusion and an end surface of the pin block facing the mold body is 8°±0.15°.

7. A method for using an insert mold, using the insert mold according to any one of claims 1 to 6, characterized in that: The following steps are involved: The pin block is arranged on one side of the mold body, so that one end of the guide pin connected to the pin block passes through the mold cavity and extends outside the mold cavity; The second needle seat is arranged on the other side of the mold body, and the end of the guide pin extending from the mold cavity is accommodated in the second guide pin accommodating groove. Then, the first needle seat and the second needle seat are combined, and the first adjustable insert is arranged in the first opening portion, and the second adjustable insert is arranged in the second opening portion, so that the end of the guide pin extending from the mold cavity is accommodated in the first guide hole and the second guide hole in sequence. Adjusting the positions of the first adjustable insert and the second adjustable insert in the thickness direction and the width direction of the needle seat so that the axes of the guide needle and the core needle are parallel to each other and located on the same horizontal plane, then fixing the first adjustable insert and the second adjustable insert, and finally locking the first needle seat and the second needle seat; Closing the mold, injecting the molding material into the mold cavity, and performing curing and molding; Open the mold.

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