Plastic packaging mold and plastic packaging method

Abstract

The application provides a plastic packaging mold and a plastic packaging method. The plastic packaging mold comprises a first mold set and a second mold set. The first mold set comprises a first mold and a first connecting base connected with each other. The first mold is provided with a first cavity. The first mold can move relative to the first connecting base. The second mold set comprises a second mold capable of moving towards or away from the first connecting base, a second connecting base connected with the second mold, and a first ejector pin fixedly arranged on the second connecting base. The second mold is provided with a second cavity capable of combining with the first cavity to form a forming cavity. The second connecting base can move relative to the second mold. An end of the first ejector pin towards the first cavity is a first pressing end capable of entering and exiting the second cavity. The first connecting base and the second mold are capable of moving towards each other, so that the first mold and the second mold can move towards each other until a stop, and the first connecting base and the second connecting base are capable of moving towards each other until a stop. The stop of the first mold and the second mold is not later than the stop of the first connecting base and the second connecting base.

Description

Technical Field

[0001] This application relates to the field of electronic product packaging technology, and more specifically, to molding dies and molding methods. Background Technology

[0002] During the manufacturing process of electronic products, substrates, such as heat dissipation substrates, are placed on the frame. When packaging electronic components, the substrates and frame are encapsulated together. Therefore, one or more movable ejector pins are needed to press the substrate firmly against the frame or a contact surface, preventing issues such as substrate warping, deformation, and excess adhesive. However, during the potting and encapsulation process, any holes left by the movable ejector pins after they leave the substrate need to be filled to prevent electrical leakage in the electronic product.

[0003] In related technologies, two sets of driving mechanisms are used. One driving mechanism controls the mold closing and opening of the mold for placing the frame and substrate, and the other driving mechanism drives the movable ejector pins to press against and move away from the substrate. The above solution increases the complexity of the mold or packaging equipment structure, and also increases the cost and maintenance accordingly. Summary of the Invention

[0004] In view of this, this application provides a molding die and a molding method to solve the problem that the material needs to be controlled by another set of driving mechanisms during the molding process.

[0005] One embodiment of this application provides a molding die. The molding die includes a first module and a second module. The first module includes a first mold and a first connecting seat. The first mold has a first cavity. The first mold is connected to the first connecting seat. The first mold is configured to move relative to the first connecting seat in a first direction. The second module includes a second mold, a second connecting seat, and a first ejector pin. The second mold is connected to the second connecting seat and has a second cavity. The second cavity is disposed facing the first cavity so that the first cavity and the second cavity can be combined to form a molding cavity. The second mold and the first connecting seat are configured to move closer to or further away from each other in the first direction. The second connecting seat is configured to move relative to the second mold in the first direction. The first ejector pin is fixedly disposed on the second connecting seat. The first ejector pin includes a first pressing end. The first pressing end is configured to enter and exit the second cavity. When the first connecting seat and the second mold move closer to each other in the first direction, the first mold and the second mold can move closer to each other until they stop against each other, and the first connecting seat and the second connecting seat can move closer to each other until they stop against each other. Furthermore, the time when the first mold and the second mold stop each other is no later than the time when the first connecting seat and the second connecting seat stop each other.

[0006] In the above embodiment, the first connecting seat and the second mold move closer to each other, so that the second mold and the first mold connected to the first connecting seat move closer to each other until the first mold and the second mold stop each other, so that the first cavity and the second cavity combine to form a molding cavity for material encapsulation. When the first connecting seat and the second mold move closer to each other, before the first connecting seat stops with the second connecting seat, the second mold and the first ejector pin are close to the first mold, allowing the first pressing end to remain inserted into the second cavity or molding cavity, thus compressing the material. After the first mold and the second mold stop with each other, and the first connecting seat and the second connecting seat stop with each other, the first connecting seat and the second mold continue to move closer to each other. The first mold and the second connecting seat, which were originally close to each other, are now stopped and move away from each other, causing the first pressing end of the first ejector pin to disengage from the molding cavity. This achieves the mold closing action of the molding cavity and the entry and exit action of the first ejector pin simply by driving the first connecting seat and the second mold closer together, without the need for an additional drive mechanism to control the action of the first ejector pin. Furthermore, the mutual stops of the first mold and the second mold precede or occur simultaneously with the mutual stops of the first connecting seat and the second connecting seat. Therefore, the plastic sealing operation performed by the plastic sealing mold can be achieved by an external drive mechanism, which first seals and fixes the material, and then pulls out the first ejector pin to fill the hole.

[0007] In some embodiments of this application, the first cavity has a first opening on the side facing the second cavity. The second cavity has a second opening on the side facing the first cavity. When the first mold and the second mold do not block each other in the first direction, the first pressing end is farther away from the first opening relative to the second opening.

[0008] In the above embodiments, when the first cavity and the second cavity are not combined to form a molding cavity, a portion of the material can be located within the second cavity to constrain the position of the material and reduce the possibility of the material detaching from the second cavity before the mold is closed to form the molding cavity.

[0009] In some embodiments of this application, the second mold further includes an adjusting member. When the first mold and the second mold do not block each other in the first direction, the adjusting member can prevent the second connecting seat from approaching the first connecting seat, so that the first pressing end is farther away from the first opening relative to the second opening.

[0010] In the above embodiments, the adjusting member can control the position of the first pressing end in the second cavity in the first direction, preventing the first pressing end from pushing the material out of the second cavity. Furthermore, by changing the position of the adjusting member's stop on the second connecting seat, the position of the first pressing end in the second cavity can be adjusted to accommodate materials of different sizes.

[0011] In some embodiments of this application, in a first direction, the first connecting seat is located on the side of the first mold opposite to the second mold, and the second connecting seat is located on the side of the second mold opposite to the first mold.

[0012] In the above embodiments, the first mold and the second mold are located between the first connecting seat and the second connecting seat in the first direction, reducing the possibility that the first connecting seat and the second connecting seat would interfere with the mutual blocking of the first mold and the second mold during mold closing. The first connecting seat can block the first mold on the side of the first mold opposite to the second mold in the first direction, thereby limiting and protecting the first mold and restricting the position of the second mold. The second connecting seat on the side of the second mold opposite to the first mold in the first direction drives the first ejector pin to move, enabling the first ejector pin to enter and exit the second cavity from the side of the second cavity opposite to the first cavity, preventing the first ejector pin from moving between the first cavity and the second cavity and obstructing mold closing, thus facilitating the entry and exit of the first ejector pin into and out of the second cavity.

[0013] In some embodiments of this application, the first module further includes a first limiting member. When the first mold moves away from the first connecting seat to a first predetermined distance in a first direction, the first limiting member can stop the first mold. The second module further includes a second limiting member. When the second connecting seat moves away from the second mold to a second predetermined distance in a first direction, the second limiting member can stop the second connecting seat.

[0014] In the above embodiments, the first connecting seat, in conjunction with the first limiting member, restricts the movement range of the first mold relative to the first connecting seat in the first direction, thereby maintaining the connection between the first mold and the first connecting seat and preventing the first mold from detaching from the first connecting seat. Similarly, the second mold, in conjunction with the second limiting member, restricts the movement range of the second connecting seat relative to the second mold in the first direction, thereby maintaining the connection between the second connecting seat and the second mold and preventing the second connecting seat from detaching from the second mold.

[0015] In some embodiments of this application, the first module further includes a first ejector rod. The first ejector rod is disposed on the first connecting seat. The second module further includes a second ejector rod. The second ejector rod is disposed on the second connecting seat. In a first direction, the first connecting seat and the second mold are close to each other, which allows the first ejector rod and the second ejector rod to stop each other, so that the first connecting seat and the second connecting seat stop each other.

[0016] In the above embodiments, the first ejector rod and the second ejector rod are more likely to cross the first mold and the second mold and stop each other, compared with the first connecting seat and the second connecting seat. While achieving mutual stopping of the first connecting seat and the second connecting seat, the impact on mutual stopping of the first mold and the second mold is reduced.

[0017] In some embodiments of this application, the first mold has a through first guide hole. A first ejector pin is disposed in the first guide hole. The second mold has a through second guide hole. A second ejector pin is disposed in the second guide hole.

[0018] In the above embodiments, the first guide hole guides the movement of the first ejector rod, and the second guide hole guides the movement of the second ejector rod, improving the accuracy of the first and second ejector rods reaching contact, thereby improving the accuracy of the first ejector pin leaving the second cavity. Simultaneously, the first connecting seat can constrain the position of the first mold in a direction perpendicular to the first direction via the first ejector rod, and the second mold can constrain the position of the second connecting seat in a direction perpendicular to the first direction via the second ejector rod.

[0019] In some embodiments of this application, the first module further includes a first elastic member. The first elastic member elastically acts on the first connecting seat and the first mold. When the first mold and the second mold stop each other, the first elastic member can apply an elastic force toward the second mold in a first direction to the first mold. The second module further includes a second elastic member. The second elastic member elastically acts on the second mold and the second connecting seat. When the first connecting seat and the second connecting seat stop each other, the second elastic member can apply an elastic force toward the first connecting seat in a first direction to the second connecting seat.

[0020] In the above embodiments, the first elastic element serves two purposes: firstly, it maintains the mutual blocking between the first mold and the second mold to ensure the mold closing of the first cavity and the second cavity; secondly, it allows the first mold to reset when the first connecting seat and the second mold move away from each other. The second elastic element serves two purposes: firstly, it maintains the pressing of the first ejector pin onto the material; secondly, it allows the first ejector pin to reset when the second mold and the first connecting seat move away from each other.

[0021] In some embodiments of this application, the second module further includes an unloading assembly. The unloading assembly includes a third connecting seat and a second ejector pin. The second mold is connected to the third connecting seat, and the third connecting seat is movable relative to the second mold in a first direction. The second ejector pin is fixedly disposed on the third connecting seat. The second ejector pin includes a second pressing end. The second pressing end is configured to enter and exit the second cavity. In the first direction, when the first mold and the second mold are not mutually blocking, the second mold moves away from the first connecting seat, allowing the second pressing end to enter the second cavity.

[0022] In the above embodiment, after the first cavity and the second cavity are separated, the second mold and the first connecting seat are relatively far apart, so that the second ejector pin enters the second cavity under the drive of the third connecting seat. The second pressing end can push the material, so that the material is separated from the second cavity, and the demolding action is completed.

[0023] One embodiment of this application provides a molding method for molding materials using a molding mold as described in any of the above embodiments.

[0024] Plastic sealing methods include:

[0025] Preparation steps: Place the material into the second cavity.

[0026] Mold closing steps: Drive the first connecting seat and the second mold to move closer to each other in the first direction until the first mold and the second mold stop each other.

[0027] First injection molding step: After the first cavity and the second cavity are combined to form the molding cavity, plastic raw material is injected into the molding cavity.

[0028] Needle removal step: Based on the mutual blocking between the first mold and the second mold, drive the first connecting seat and the second mold to continue to move closer to each other in the first direction until the first pressing end of the first ejector pin leaves the molding cavity.

[0029] The second injection molding step: After the material leaves the first pressing end, plastic raw material is injected into the molding cavity.

[0030] In the above embodiments, the first connecting seat and the second mold approach each other to combine the first cavity and the second cavity to form a molding cavity for molding the molding material. The first connecting seat and the second mold can further approach each other while maintaining the combined molding cavity, allowing the first ejector pin to leave the material and exit the molding cavity, facilitating the continued injection of plastic material to fill the hole left by the first ejector pin. Therefore, the action of the first cavity and the second cavity closing to form the molding cavity and the action of the first ejector pin leaving the molding cavity can be achieved simply by driving the first connecting seat and the second mold closer together, without needing two different driving mechanisms to control these two actions separately. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the scope.

[0032] Figure 1 A cross-sectional view of a cutting position of a molding die provided in an embodiment of this application;

[0033] Figure 2 for Figure 1 Enlarged view of section A;

[0034] Figure 3 A cross-sectional view of another cut position of the molding die provided in one embodiment of this application;

[0035] Figure 4 This is a bottom view of the first module of a molding die provided in an embodiment of this application;

[0036] Figure 5 This is a top view of the second module of a molding die provided in an embodiment of this application;

[0037] Figure 6 This is a schematic flowchart of one form of the encapsulation method provided in an embodiment of this application;

[0038] Figure 7 This is a schematic flowchart of another form of the encapsulation method provided in one embodiment of this application.

[0039] Explanation of key component symbols:

[0040] 100 plastic sealing molds

[0041] Module 1

[0042] First mold 11

[0043] First cavity 111

[0044] First opening 112

[0045] First guide hole 113

[0046] First connecting seat 12

[0047] First limiting component 13

[0048] First push rod 14

[0049] First elastic element 15

[0050] Injection molded drainage component 16

[0051] Drainage channel 161

[0052] Second Module 2

[0053] Second mold 21

[0054] Second cavity 211

[0055] Second opening 212

[0056] Second guide hole 213

[0057] Second connecting seat 22

[0058] First thimble 23

[0059] First pressure end 231

[0060] Second limiting component 24

[0061] Second push rod 25

[0062] Second elastic element 26

[0063] Adjustment component 27

[0064] Unloading assembly 28

[0065] Third connecting seat 281

[0066] Second thimble 282

[0067] Second pressure end 2821

[0068] Third limiting component 283

[0069] Third elastic element 284

[0070] Injection Molding Feed Cylinder 291

[0071] Drive connection post 292

[0072] First direction X Detailed Implementation

[0073] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0074] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0075] Furthermore, the terms “first,” “second,” “third,” etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0076] This application provides a molding die and a molding method. The molding die includes a first module and a second module. The first module includes a first mold and a first connecting seat. The first mold has a first cavity. The first mold is connected to the first connecting seat. The first mold is configured to move relative to the first connecting seat in a first direction. The second module includes a second mold, a second connecting seat, and a first ejector pin. The second mold is connected to the second connecting seat and has a second cavity. The second cavity is disposed facing the first cavity so that the first cavity and the second cavity can be combined to form a molding cavity. The second mold and the first connecting seat are configured to move closer to or further away from each other in the first direction. The second connecting seat is configured to move relative to the second mold in the first direction. The first ejector pin is fixedly disposed on the second connecting seat. One end of the first ejector pin facing the first cavity is a first pressing end. The first pressing end is configured to enter and exit the second cavity. When the first connecting seat and the second mold move closer to each other in the first direction, the first mold and the second mold can move closer to each other until they stop against each other, and the first connecting seat and the second connecting seat can move closer to each other until they stop against each other. Furthermore, the time when the first mold and the second mold stop each other is no later than the time when the first connecting seat and the second connecting seat stop each other.

[0077] The first connecting seat and the second mold move closer together, causing the second mold and the first mold connected to the first connecting seat to move closer together until the first mold and the second mold stop each other, so that the first cavity and the second cavity combine to form a molding cavity for material encapsulation. When the first connecting seat and the second mold move closer together, before the first connecting seat stops with the second connecting seat, the second mold and the first ejector pin are close to the first mold, ensuring that the first pressing end is extended into the second cavity or molding cavity to compress the material. After the first mold and the second mold stop with each other, and the first connecting seat stops with the second connecting seat, the first connecting seat and the second mold continue to move closer together. The previously close first mold and the second connecting seat are now stopped and move away from each other, causing the first pressing end of the first ejector pin to disengage from the molding cavity. This allows the molding cavity closing action and the first ejector pin's entry and exit action to be achieved solely by driving the first connecting seat and the second mold closer together, without the need for an additional drive mechanism to control the first ejector pin's movement. Furthermore, the mutual stops of the first mold and the second mold precede or occur simultaneously with the mutual stops of the first connecting seat and the second connecting seat. Therefore, the plastic sealing operation performed by the plastic sealing mold can be achieved by an external drive mechanism, which first seals and fixes the material, and then pulls out the first ejector pin to fill the hole.

[0078] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0079] See Figure 1 and Figure 3 One embodiment of this application provides a molding die 100 for injection molding and encapsulating materials. The molding die 100 includes a first module 1 and a second module 2. The material is encapsulated after the first module 1 and the second module 2 are closed.

[0080] In some embodiments, materials (not shown) are encapsulated and then further processed to form electronic products, such as circuit boards. The materials include a frame and a substrate; some materials may further include a chip. The frame is made of a conductive material, such as gold, silver, copper, or aluminum, and can be further processed into pins in subsequent operations. The substrate can be a heat-dissipating substrate, such as ceramic. Both the substrate and the chip are connected to the frame, and the connection methods include, but are not limited to, soldering, hot-melt bonding, adhesive bonding, and screw fastening. The chip can be directly connected to the frame or directly to the substrate.

[0081] The first module 1 includes a first mold 11 and a first connecting seat 12. The first mold 11 has one or more first cavities 111 on one side in the first direction X. The first mold 11 is connected to the first connecting seat 12. The first mold 11 is configured to be movable relative to the first connecting seat 12 in the first direction X.

[0082] The second module 2 includes a second mold 21, a second connecting seat 22, and a first ejector pin 23. The second mold 21 has one or more second cavities 211 on one side in the first direction X. The second cavities 211 are disposed facing the first cavity 111, such that each first cavity 111 and one second cavity 211 can be combined to form a molding cavity (not shown). The second mold 21 is connected to the second connecting seat 22. The second connecting seat 22 is configured to move relative to the second mold 21 in the first direction X. The first ejector pin 23 is fixedly disposed on the second connecting seat 22. The first ejector pin 23 includes a first pressing end 231. The first pressing end 231 is disposed facing the first cavity 111. The first pressing end 231 is configured to enter and exit the second cavity 211.

[0083] The first connecting seat 12 and the second mold 21 are configured to move closer to or further away from each other in a first direction X. The first connecting seat 12 and the second mold 21 can move relative to each other under the drive of an external drive mechanism. The movement of the first connecting seat 12 and the second mold 21 can be driven in the following ways: the first connecting seat 12 is fixed and the external drive mechanism drives the second mold 21 to move; or, the second mold 21 is fixed and the external drive mechanism drives the first connecting seat 12 to move; or, the external drive mechanism drives both the first connecting seat 12 and the second mold 21 to move.

[0084] The first connecting seat 12 and the second mold 21 are brought close together in the first direction X, such that the first mold 11 and the second mold 21 move closer together until they stop each other in the first direction X, and the first connecting seat 12 and the second connecting seat 22 move closer together until they stop each other in the first direction X. Furthermore, the time at which the first mold 11 and the second mold 21 stop each other is no later than the time at which the first connecting seat 12 and the second connecting seat 22 stop each other.

[0085] The first connecting seat 12 and the second mold 21 move closer together, so that the second mold 21 and the first mold 11 connected to the first connecting seat 12 move closer together until the first mold 11 and the second mold 21 stop each other, so that the first cavity 111 and the second cavity 211 combine to form a molding cavity for material encapsulation. The first connecting seat 12 and the second mold 21 move closer together, so that the first connecting seat 12 and the second connecting seat 22 connected to the second mold 21 move closer together. Before the first connecting seat 12 and the second connecting seat 22 stop each other, the second mold 21 and the first ejector pin 23 are close to the first mold 11, which can keep the first pressing end 231 in a state of extending into the second cavity 211 or the molding cavity, so as to compress the material.

[0086] After the first mold 11 and the second mold 21 stop each other and the first connecting seat 12 and the second connecting seat 22 stop each other, the first connecting seat 12 and the second mold 21 continue to move closer to each other. The first mold 11 changes its direction of movement under the push of the second mold 21, and the second connecting seat 22 changes its direction of movement under the push of the first connecting seat 12. Thus, the first mold 11 and the second connecting seat 22, which were originally close to each other, are stopped and move away from each other. This causes the first pressing end 231 of the first ejector pin 23 to disengage from the molding cavity. This achieves the molding cavity closing action and the first ejector pin 23 entering and exiting action by simply driving the first connecting seat 12 and the second mold 21 to move closer to each other, without the need for an additional drive mechanism to control the action of the first ejector pin 23. Furthermore, the mutual stops of the first mold 11 and the second mold 21 precede or occur simultaneously with the mutual stops of the first connecting seat 12 and the second connecting seat 22. Therefore, the plastic sealing operation performed by the plastic sealing mold 100 can be achieved by using an external drive mechanism to first fix the material in plastic sealing and then pull out the first ejector pin 23 to fill the hole.

[0087] In some embodiments, the first pressing end 231 of the first ejector pin 23 presses against the substrate of the material, and can press the substrate tightly against the cavity wall of the first cavity 111 on the side away from the second cavity 211 in the first direction X. This ensures that after the material is encapsulated, the side of the substrate facing away from the second cavity 211 is not encapsulated. In some embodiments, a frame for one material is provided with multiple substrates, and the encapsulation operation for one material is performed within one molding cavity. See 1 and... Figure 5 Multiple first ejector pins 23 are provided, and the multiple first ejector pins 23 extend into a second cavity 211 to press against each substrate on a frame. It is understood that, in some embodiments, when the first ejector pins 23 press against the substrate, they avoid the position where the chip is located to prevent damage to the chip.

[0088] See Figure 1 and Figure 2 In some embodiments, in the first direction X, the first cavity 111 has a first opening 112 on the side facing the second cavity 211. In the first direction X, the second cavity 211 has a second opening 212 on the side facing the first cavity 111. When the first mold 11 and the second mold 21 stop each other, the structure at the location of the first opening 112 of the first mold 11 and the structure at the location of the second opening 212 of the second mold 21 abut against each other, and the first cavity 111 and the second cavity 211 combine to form a molding cavity, which can be used to inject plastic raw materials for sealing the material. When the first mold 11 and the second mold 21 do not stop each other in the first direction X, the first pressing end 231 is farther away from the first opening 112 relative to the second opening 212.

[0089] When the first cavity 111 and the second cavity 211 are not combined to form a molding cavity, part of the material can be located in the second cavity 211 to constrain the position of the material and reduce the possibility of the material detaching from the second cavity 211 before the mold is closed to form a molding cavity.

[0090] See Figure 1 and Figure 3 In some embodiments, in the first direction X, the first connecting seat 12 is located on the side of the first mold 11 opposite to the second mold 21. In the first direction X, the second connecting seat 22 is located on the side of the second mold 21 opposite to the first mold 11. The first ejector pin 23 passes through the second mold 21, so that the first pressing end 231 extends from the side of the second cavity 211 opposite to the second opening 212 in the first direction X into the second cavity 211.

[0091] The first mold 11 and the second mold 21 are located between the first connecting seat 12 and the second connecting seat 22 in the first direction X, reducing the possibility that the first connecting seat 12 and the second connecting seat 22 will interfere with the mutual blocking of the first mold 11 and the second mold 21, thus preventing mold closing. The first connecting seat 12 can stop the first mold 11 on the side of the first mold 11 away from the second mold 21 in the first direction X, thereby limiting and protecting the first mold 11 and restricting the position of the second mold 21. The second connecting seat 22 drives the first ejector pin 23 to move on the side of the second mold 21 away from the first mold 11 in the first direction X, allowing the first ejector pin 23 to enter and exit the second cavity 211 from the side of the second cavity 211 away from the first cavity 111, preventing the first ejector pin 23 from moving between the first cavity 111 and the second cavity 211 and obstructing mold closing, thus facilitating the entry and exit of the first ejector pin 23 into and out of the second cavity 211.

[0092] It is understood that the first connecting seat 12 is located on the side of the first mold 11 away from the second mold 21, but this does not mean that all the physical structures of the first connecting seat 12 are located on the side away from the second mold 21, and some physical structures are allowed to extend beyond it; the second connecting seat 22 is located on the side of the second mold 21 away from the first mold 11, but this does not mean that all the physical structures of the second connecting seat 22 are located on the side away from the first mold 11, and some physical structures are allowed to extend beyond it.

[0093] See Figure 1 and Figure 3 In some embodiments, the first module 1 further includes a first limiting member 13. When the first mold 11 moves away from the first connecting seat 12 in the first direction X to a first predetermined distance, the first limiting member 13 can stop the first mold 11. The second module 2 further includes a second limiting member 24. When the second connecting seat 22 moves away from the second mold 21 in the first direction X to a second predetermined distance, the second limiting member 24 can stop the second connecting seat 22.

[0094] The first connecting seat 12, in conjunction with the first limiting member 13, restricts the movement range of the first mold 11 relative to the first connecting seat 12 in the first direction X, thereby maintaining the connection between the first mold 11 and the first connecting seat 12 and preventing the first mold 11 from detaching from the first connecting seat 12. The second mold 21, in conjunction with the second limiting member 24, restricts the movement range of the second connecting seat 22 relative to the second mold 21 in the first direction X, thereby maintaining the connection between the second connecting seat 22 and the second mold 21 and preventing the second connecting seat 22 from detaching from the second mold 21. The first and second preset distances are set according to actual conditions.

[0095] See Figure 1 and Figure 3It is understood that in some embodiments, multiple first limiting members 13 are provided, and the multiple first limiting members 13 are spaced apart in a direction perpendicular to the first direction X. Multiple second limiting members 24 are provided, and the multiple second limiting members 24 are spaced apart in a direction perpendicular to the first direction X.

[0096] See Figure 1 and Figure 3 In some embodiments, in the first direction X, one end of the first limiting member 13 is fixedly disposed on the side of the first mold 11 facing the first connecting seat 12, and the other end of the first limiting member 13 can move relative to the first connecting seat 12 and stop the side of the first connecting seat 12 away from the first mold 11. In the first direction X, one end of the second limiting member 24 is fixedly disposed on the side of the second mold 21 facing the second connecting seat 22, and the other end of the second limiting member 24 can move relative to the second connecting seat 22 and stop the side of the second connecting seat 22 away from the second mold 21. The above-described arrangement of the first limiting member 13 and the second limiting member 24 facilitates both mold closing of the first mold 11 and the second mold 21 and assembly. In other embodiments, one end of the first limiting member 13 is fixedly disposed on the first connecting seat 12 and the other end can move relative to the first mold 11, and one end of the second limiting member 24 is fixedly disposed on the second connecting seat 22 and the other end can move relative to the second mold 21.

[0097] See Figure 3 and Figure 4 In some embodiments, the first module 1 further includes a first push rod 14. The first push rod 14 is disposed on the first connecting seat 12. The extension direction of the first push rod 14 is parallel to the first direction X, and the end of the first push rod 14 away from the first connecting seat 12 faces the second connecting seat 22 in the first direction X. The second module 2 further includes a second push rod 25. The second push rod 25 is disposed on the second connecting seat 22. The extension direction of the second push rod 25 is parallel to the first direction X, and the end of the push rod away from the second connecting seat 22 faces the first connecting seat 12 in the first direction X. In the first direction X, the first connecting seat 12 and the second mold 21 are close to each other, which allows the first push rod 14 and the second push rod 25 to stop each other, so that the first connecting seat 12 and the second connecting seat 22 stop each other.

[0098] Compared to the first connecting seat 12 and the second connecting seat 22, the first ejector rod 14 and the second ejector rod 25 are more likely to cross the first mold 11 and the second mold 21 to abut against each other and stop each other. While achieving mutual stopping of the first connecting seat 12 and the second connecting seat 22, the impact on the mold closing of the first mold 11 and the second mold 21 is reduced.

[0099] See Figure 3 and Figure 4It is understood that in some embodiments, multiple first push rods 14 are provided, and the multiple first push rods 14 are spaced apart in a direction perpendicular to the first direction X. Multiple second push rods 25 are provided, and the multiple second push rods 25 are spaced apart in a direction perpendicular to the first direction X.

[0100] See Figure 3 and Figure 4 In some embodiments, the first mold 11 has a first guide hole 113 extending in the first direction X. A first ejector pin 14 is disposed in the first guide hole 113. The second mold 21 has a second guide hole 213 extending in the first direction X. A second ejector pin 25 is disposed in the second guide hole 213.

[0101] The first guide hole 113 guides the movement of the first ejector pin 14, and the second guide hole 213 guides the movement of the second ejector pin 25, improving the accuracy of the first ejector pin 14 and the second ejector pin 25 reaching contact. This improves the accuracy of the first ejector pin 23's movement from the second cavity 211, preventing the first ejector pin 23 from prematurely disengaging from the material before the mold cavity is closed or before the plastic material has been sealed. Simultaneously, the first connecting seat 12 can constrain the position of the first mold 11 in the direction perpendicular to the first X via the first ejector pin 14, and the second mold 21 can constrain the position of the second connecting seat 22 in the direction perpendicular to the first X via the second ejector pin 25.

[0102] In other embodiments, the first push rod 14 can be omitted, and the second push rod 25 passes through the second guide hole 213 and the first guide hole 113 in sequence to abut against the first connecting seat 12, so that the first connecting seat 12 and the second connecting seat 22 stop against each other. Alternatively, the second push rod 25 can be omitted, and the first push rod 14 passes through the first guide hole 113 and the second guide hole 213 in sequence to abut against the second connecting seat 22, so that the first connecting seat 12 and the second connecting seat 22 stop against each other.

[0103] See Figure 1 and Figure 3 In some embodiments, the first module 1 further includes a first elastic element 15. The first elastic element 15 elastically acts on the first connecting seat 12 and the first mold 11. When the first mold 11 and the second mold 21 stop against each other, the first elastic element 15 can apply an elastic force toward the second mold 21 in the first direction X to the first mold 11. The second module 2 further includes a second elastic element 26. The second elastic element 26 elastically acts on the second mold 21 and the second connecting seat 22. When the first connecting seat 12 and the second connecting seat 22 stop against each other, the second elastic element 26 can apply an elastic force toward the first connecting seat 12 in the first direction X to the second connecting seat 22.

[0104] The first elastic element 15 serves two purposes: firstly, it keeps the first mold 11 and the second mold 21 from blocking each other, thus maintaining the mold closing of the first cavity 111 and the second cavity 211; secondly, it allows the first mold 11 to reset when the first connecting seat 12 and the second mold 21 move away from each other. The second elastic element 26 serves two purposes: firstly, it maintains the pressure of the first ejector pin 23 on the material; secondly, it allows the first ejector pin 23 to reset when the second mold 21 and the first connecting seat 12 move away from each other.

[0105] See Figure 1 and Figure 3 It is understood that in some embodiments, multiple first elastic elements 15 are provided, and the multiple first elastic elements 15 are spaced apart in a direction perpendicular to the first direction X. Multiple second elastic elements 26 are provided, and the multiple second elastic elements 26 are spaced apart in a direction perpendicular to the first direction X.

[0106] In some embodiments, the second module 2 further includes a pressure measuring component (not shown). The pressure measuring component is connected to the second elastic element 26 and can measure the pressure applied by the second elastic element 26 to the second connecting seat 22. As an example, when calculating the pressure exerted by the first ejector pin 23 on the material, the pressure of each second elastic element 26 can be measured directly by a force sensor, or the distance compressed by each second elastic element 26 can be measured by a displacement sensor. The pressure of each second elastic element 26 can be calculated by combining the elastic stiffness of the second elastic element 26. Then, by summing and calculating the total pressure exerted by multiple second elastic elements 26 and averaging it according to the number of first ejector pins 23, the pressure exerted by each first ejector pin 23 on the material can be obtained. This allows for comparison and judgment based on set requirements to determine whether the pressure exerted by the first ejector pin 23 on the material meets the requirements, avoiding the risk of insufficient pressure from the first ejector pin 23 to compress the material and causing glue overflow, and also avoiding the risk of excessive pressure from the first ejector pin 23 to damage the material.

[0107] See Figure 1 and Figure 3In some embodiments, in the first direction X, when the external drive mechanism drives the first connecting seat 12 to move, the first connecting seat 12 drives the first mold 11 to move via the first elastic member 15. In the first direction X, when the external drive mechanism drives the second mold 21 to move, the second mold 21 drives the second connecting seat 22 to move via the second elastic member 26. In other embodiments, the first elastic member 15 and the second elastic member 26 may be omitted. When the external drive mechanism drives the first connecting seat 12 to move, the first connecting seat 12 can drive the first mold 11 to move via friction, or the first connecting seat 12 can drive the first mold 11 to move via a hydraulic buffer or other components; when the external drive mechanism drives the second mold 21 to move, the second mold 21 can drive the second connecting seat 22 to move via friction, or the second mold 21 can drive the second connecting seat 22 to move via a hydraulic buffer or other components.

[0108] See Figure 1 and Figure 3 In some embodiments, one end of the first elastic member 15 is connected to or abuts against the side of the first connecting seat 12 facing the first mold 11, and the other end of the first elastic member 15 is connected to or abuts against the side of the first mold 11 facing the first connecting seat 12. The first elastic member 15 and the first limiting member 13 are independently arranged. One end of the second elastic member 26 is connected to or abuts against the side of the second connecting seat 22 away from the second mold 21, and the other end of the second elastic member 26 is connected to or abuts against the end of the second limiting member 24 facing the second mold 21.

[0109] See Figure 1 and Figure 3 In some embodiments, the first connecting seat 12 has a groove on the side facing the first mold 11, away from the first mold 11 in the first direction X, for accommodating one end of the first elastic member 15. The first mold 11 has a groove on the side facing the first connecting seat 12, away from the first connecting seat 12 in the first direction X, for accommodating the other end of the first elastic member 15. The second connecting seat 22 has a groove on the side facing away from the second mold 21, away from the second mold 21 in the first direction X, for accommodating the second elastic member 26.

[0110] See Figure 3 In some embodiments, the second mold 21 further includes an adjusting member 27. When the first mold 11 and the second mold 21 do not stop each other in the first direction X, the adjusting member 27 can stop the second connecting seat 22 from approaching the first connecting seat 12, so that the first pressing end 231 is farther away from the first opening 112 relative to the second opening 212.

[0111] The adjusting member 27 can control the position of the first pressing end 231 in the first direction X within the second cavity 211, preventing the first pressing end 231 from pushing the material out of the second cavity 211. Furthermore, by changing the position of the adjusting member 27 stopping the second connecting seat 22, the position of the first pressing end 231 within the second cavity 211 can be adjusted, thereby adapting to materials of different sizes.

[0112] See Figure 3 It is understood that there are multiple adjusting members 27, and the multiple adjusting members 27 are spaced apart in a direction perpendicular to the first direction X.

[0113] See Figure 3 It is understood that in some embodiments, the adjusting member 27 is in the shape of a cuboid, a cone, a cylinder, etc. In the first direction X, the adjusting member 27 stops at the side of the second mold 21 facing the second connecting seat 22, and the adjusting member 27 stops at the side of the second connecting seat 22 facing the second mold 21. Driven by the elastic force of the second elastic member 26, it moves towards the second mold 21 in the first direction X until the adjusting member 27 is clamped between the second mold 21 and the second connecting seat 22 in the first direction X. The second limiting member 24 stops the second connecting seat 22 through the adjusting member 27 to counteract the elastic force applied to the second connecting seat 22 by the second elastic member 26.

[0114] See Figure 1 and Figure 3 In some embodiments, the second module 2 further includes an unloading assembly 28. The unloading assembly 28 includes a third connecting seat 281 and a second ejector pin 282. The second mold 21 is connected to the third connecting seat 281, and the third connecting seat 281 is movable relative to the second mold 21 in a first direction X. The second ejector pin 282 is fixedly disposed on the third connecting seat 281. The second ejector pin 282 includes a second pressing end 2821. The second pressing end 2821 is disposed toward the first cavity 111. The second pressing end 2821 is configured to enter and exit the second cavity 211. In the first direction X, when the first mold 11 and the second mold 21 do not block each other, the second mold 21 moves away from the first connecting seat 12, allowing the second pressing end 2821 to enter the second cavity 211.

[0115] After the first cavity 111 and the second cavity 211 are separated, the second mold 21 and the first connecting seat 12 are relatively far apart, so that the second ejector pin 282 enters the second cavity 211 under the drive of the third connecting seat 281. The second pressing end 2821 can push the material, so that the material is separated from the second cavity 211, and the demolding action is completed.

[0116] See Figure 1 and Figure 3In some embodiments, in the first direction X, the third connecting seat 281 is located on the side of the second mold 21 opposite to the first mold 11. Reducing the third connecting seat 281 may interfere with the mutual blocking and mold closing of the first mold 11 and the second mold 21. In the first direction X, the third connecting seat 281 drives the second ejector pin 282 to move on the side of the second mold 21 opposite to the first mold 11, enabling the second pressing end 2821 of the second ejector pin 282 to enter and exit the second cavity 211 from the side of the second cavity 211 opposite to the first cavity 111. It is understood that in some embodiments, in the first direction X, the third connecting seat 281 is located on the side of the second connecting seat 22 away from the second mold 21, so that when the second mold 21 moves away from the first mold 11 and drives the third connecting seat 281 away from the first mold 11, the third connecting seat 281 approaches the second mold 21 under the stop of the external stop mechanism, thereby driving the second pressing end 2821 of the second ejector pin 282 into the second cavity 211, and ejecting the material from the second cavity 211 to achieve demolding. It is understood that in some embodiments, when the first mold 11 and the second mold 21 do not stop each other and the external stop mechanism does not stop the third connecting seat 281, the second pressing end 2821 does not extend into the second cavity 211, so as to avoid interfering with the placement of the material and the molding operation of the material.

[0117] See Figure 1 and Figure 3 In some embodiments, the unloading assembly 28 further includes a third limiting member 283 and a third elastic member 284. When the third connecting seat 281 moves away from the second mold 21 in the first direction X to a third predetermined distance, the third limiting member 283 can stop the third connecting seat 281. The second mold 21 cooperates with the third limiting member 283 to limit the range of movement of the third connecting seat 281 relative to the second mold 21 in the first direction X, thereby maintaining the connection between the third connecting seat 281 and the second mold 21 and preventing the third connecting seat 281 from detaching from the second mold 21. The third predetermined distance is set according to the actual situation. The third elastic member 284 elastically acts on the second mold 21 and the third connecting seat 281. When the third connecting seat 281 stops each other with the external stopping mechanism, the third elastic member 284 can apply an elastic force towards the second mold 21 in the first direction X to the third connecting seat 281. The third elastic element 284 is provided so that when the second mold 21 and the first connecting seat 12 are far apart, the second pressing end 2821 of the second ejector pin 282 can extend into the second cavity 211 to demold the material.

[0118] See Figure 1 and Figure 3In some embodiments, in the first direction X, one end of the third limiting member 283 is fixedly disposed on the side of the second mold 21 facing the third connecting seat 281, and the other end of the third limiting member 283 is movable relative to the third connecting seat 281 and blocks the side of the third connecting seat 281 away from the second mold 21. One end of the third elastic member 284 is connected to or abuts against the side of the third connecting seat 281 facing the second mold 21, and the other end of the third elastic member 284 is connected to or abuts against the side of the second mold 21 facing the third connecting seat 281.

[0119] See Figure 1 It is understood that in some embodiments, multiple third limiting members 283 are provided, and the multiple third limiting members 283 are spaced apart in a direction perpendicular to the first direction X. Multiple third elastic members 284 are provided, and the multiple third elastic members 284 are spaced apart in a direction perpendicular to the first direction X. As an exemplary example, the first limiting member 13, the second limiting member 24, and the third limiting member 283 are, but are not limited to, bolts, etc., and the first elastic member 15, the second elastic member 26, and the third elastic member 284 are, but are not limited to, springs, tension springs, etc.

[0120] In some embodiments, the first module 1 includes a demolding assembly (not shown). The demolding assembly includes a demolding adapter plate, a demolding elastic element, a demolding ejector pin, and a demolding ejector rod. The demolding adapter plate is located on the side of the first mold 11 opposite to the second mold 21, and a demolding elastic element is provided between the demolding adapter plate and the first mold 11. Both the demolding ejector pin and the demolding ejector rod are located on the demolding adapter plate. The demolding ejector pin can pass through the first cavity 111, and the demolding ejector rod can pass through the portion of the first mold 111 where the first cavity 111 is not provided. When the first mold 11 and the second mold 21 are not closed, the ejector pin extends into the first cavity 111, so that the ejector pin can eject the material from the first cavity 111 when the mold opens. When the first mold 11 and the second mold 21 are not closed, the ejector rod protrudes from the side of the first mold 11 facing the second mold 21, so that when the first mold 11 and the second mold 21 approach each other, the ejector rod can abut against the part of the second mold 21 where the second cavity 211 is not provided, thereby driving the ejector plate to move, so as to drive the ejector pin away from the first cavity 211. And when the first mold 11 and the second mold 21 are closed, the ejector pin leaves the first cavity 111, avoiding affecting the adhesion between the substrate of the material and the cavity wall of the first cavity 111.

[0121] See Figures 1 to 3In some embodiments, the first module 1 further includes an injection molding guide 16. The injection molding guide 16 is disposed on the side of the first mold 11 facing the second mold 21 in the first direction X. The injection molding guide 16 is provided with a guide groove 161. The guide groove 161 communicates with the first cavity 111. The second module 2 further includes an injection molding feed cylinder 291. The injection molding feed cylinder 291 passes through the second mold 21 in the first direction X and faces the injection molding guide 16. When the first mold 11 and the second mold 21 stop each other to close the mold, the guide groove 161 communicates with the injection molding feed cylinder 291, and the plastic raw material is pushed from the injection molding feed cylinder 291 to the guide groove 161 through a push rod (not shown), and enters the respective molding cavities through the guide groove 161. As an exemplary example, the plastic raw material includes, but is not limited to, resin. It is understood that in other embodiments, the injection molding guide 16 may be disposed in the second mold 21, and the injection molding feed cylinder 291 may be disposed in the first mold 11.

[0122] In some embodiments, the molding die 100 can be assembled onto a press, and the molding die 100 is driven by the press's drive mechanism to move the first connecting seat 12 and the second die 21 closer or further apart in the first direction X. Through the same drive mechanism, the opening and closing actions of the first cavity 111 and the second cavity 211 can be realized, as well as the withdrawal action of the first ejector pin 23.

[0123] See Figure 1 and Figure 2 In some embodiments, the first connecting seat 12 is fixedly disposed. The second module 2 also includes a drive connecting column 292. The drive connecting column 292 connects the second mold 21 to an external drive mechanism. The external drive mechanism drives the connecting column 292 to move, causing the second mold 21 to move closer to or further away from the first connecting seat 12 in the first direction X. By simply driving the second mold 21 to move in the first direction X, the first mold 11 and the second mold 21 can be closed to form a molding cavity, the first ejector pin 23 can be disengaged from the second cavity 211, and the second ejector pin 282 can be inserted into the second cavity 211 to demold the material.

[0124] Understandably, in some embodiments, the first direction X is parallel to the direction of gravity. The first module 1 is located above the second module 2 in the direction of gravity. In other embodiments, the second module 2 may also be located above the first module 1.

[0125] See Figure 1 , Figure 3 and Figure 6 One embodiment of this application provides a molding method for molding materials using a molding mold 100 as described in any of the above embodiments. The molding method includes:

[0126] Preparation step S1: Place the material into the second cavity 211.

[0127] Mold closing step S2: Drive the first connecting seat 12 and the second mold 21 to approach each other in the first direction X until the first mold 11 and the second mold 21 stop each other.

[0128] First injection molding step S3: After the first cavity 111 and the second cavity 211 are combined to form a molding cavity, plastic raw material is injected into the molding cavity.

[0129] Step S4: Based on the mutual blocking between the first mold 11 and the second mold 21, drive the first connecting seat 12 and the second mold 21 to continue to approach each other in the first direction X until the first pressing end 231 of the first ejector pin 23 leaves the molding cavity.

[0130] Second injection molding step S5: After the material leaves the first pressing end 231, plastic raw material is injected into the molding cavity.

[0131] The first connecting seat 12 and the second mold 21 move closer together to combine the first cavity 111 and the second cavity 211 to form a molding cavity for molding the molding material. The first connecting seat 12 and the second mold 21 can further move closer together while maintaining the combined molding cavity, allowing the first ejector pin 23 to leave the material and exit the molding cavity, facilitating the continued injection of plastic material to fill the hole left by the first ejector pin 23. Therefore, the actions of the first cavity 111 and the second cavity 211 closing to form the molding cavity and the first ejector pin 23 leaving the molding cavity can be achieved simply by driving the first connecting seat 12 and the second mold 21 closer together, without requiring two different driving mechanisms to control these two actions separately.

[0132] See Figure 1 , Figure 3 and Figure 6 In some embodiments, during the preparation step S1, a space is left between the first mold 11 and the second mold 21 in the first direction X to facilitate the placement of materials. When placing materials, the first pressing end 231 of the first ejector pin 23 extends into the second cavity 211, the substrate is located on the side of the frame facing the first ejector pin 23, and the substrate can be attached to the cavity wall of the first cavity 111 away from the second cavity 211, and the first pressing end 231 abuts against the substrate.

[0133] See Figure 1 , Figure 3 and Figure 6In some embodiments, during the mold closing step S2, an external drive mechanism drives the second mold 21 to move toward the first mold 11 in the first direction X until the first mold 11 and the second mold 21 abut against each other. After the first mold 11 and the second mold 21 abut against each other, the external drive mechanism applies a first pressure to the second mold 21, and the first mold 11 and the second mold 21 are pressed together to achieve mold closing. At this time, the first pressing end 231 is still located in the second cavity 211 and presses against the substrate of the material, keeping the substrate tightly attached to the cavity wall of the first cavity 111.

[0134] See Figure 1 , Figure 3 and Figure 6 In some embodiments, when performing the mold closing step S2, the pressure applied by each second elastic member 26 can be measured to calculate the pressure of each first ejector pin 23 acting on the material, ensuring that the pressure acting on the substrate of each material is consistent, and avoiding overflow of glue or damage to the material.

[0135] See Figure 1 , Figure 3 and Figure 6 In some embodiments, after the first injection molding step S3 is performed until the plastic raw material reaches the set requirements, the needle extraction step S4 is started.

[0136] See Figure 1 , Figure 3 and Figure 6 In some embodiments, when the pin-removing step S4 is performed, an external drive mechanism applies a second pressure to the second mold 21, which is greater than the first pressure. The external drive mechanism drives the second mold 21 to move, and the second pressure can overcome the elastic force exerted by the first elastic member 15 on the first mold 11 in the first direction X toward the second mold 21, and can overcome the elastic force exerted by the second elastic member 26 on the second connecting seat 22 in the first direction X toward the second mold 21, thereby causing the second mold 21 to push the first mold 11 closer to the first connecting seat 12, and causing the second connecting seat 22 to move away from the second mold 21 under the stop cooperation of the first ejector rod 14 and the second ejector rod 25, thereby removing the first ejector pin 23 from the second cavity 211.

[0137] See Figure 1 , Figure 3 and Figure 6 In some embodiments, after the needle withdrawal step S4 is performed until the first pressing end 231 leaves the material, the second injection molding step S5 begins. In other embodiments, after the needle withdrawal step S4 is performed until the first pressing end 231 leaves the molding cavity, the second injection molding step S5 begins.

[0138] By performing the second injection molding step S5, the pressure of the plastic material in all parts of the molding cavity is made the same, which improves the density of the plastic seal layer after the material is sealed, reduces the possibility of air bubbles, and improves the yield.

[0139] See Figure 1 , Figure 3 and Figure 7 In some embodiments, the molding method further includes an unloading step S6. The unloading step S6 is performed after the second injection molding step S5. Unloading step S6: Drive the first connecting seat 12 and the second mold 21 away from each other in the first direction X. After the first mold 11 and the second mold 21 are separated from each other, continue to drive the first connecting seat 12 and the second mold 21 away from each other in the first direction X until the third connecting seat 281 is stopped and drives the second pressing end 2821 of the second ejector pin 282 into the molding cavity.

[0140] In this application, the relatively fixed arrangement of the two does not mean that they are not detachable, but rather that the relatively fixed two can move together when the molding die 100 is in use.

[0141] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A molding die, characterized in that: include: The first module includes a first mold and a first connecting seat. The first mold has a first cavity, the first mold is connected to the first connecting seat, and the first mold is configured to move relative to the first connecting seat in a first direction. The second module includes a second mold, a second connecting seat, and a first ejector pin. The second mold is connected to the second connecting seat and has a second cavity. The second cavity is oriented toward the first cavity so that the first cavity and the second cavity can be combined to form a molding cavity. The second mold and the first connecting seat are configured to move closer to or further away from each other in the first direction. The second connecting seat is configured to move relative to the second mold in the first direction. The first ejector pin is fixedly disposed on the second connecting seat. The first ejector pin includes a first pressing end, which is configured to enter and exit the second cavity. In the first direction, the first connecting seat and the second mold approach each other, enabling the first mold and the second mold to approach each other until the first mold and the second mold stop each other, and enabling the first connecting seat and the second connecting seat to approach each other until the first connecting seat and the second connecting seat stop each other, and the time when the first mold and the second mold stop each other is no later than the time when the first connecting seat and the second connecting seat stop each other. After the first mold and the second mold stop each other and the first connecting seat and the second connecting seat stop each other, the first connecting seat and the second mold continue to move closer to each other. The first mold changes its direction of movement under the push of the second mold, and the second connecting seat changes its direction of movement under the push of the first connecting seat, so that the first mold and the second connecting seat are stopped and move away from each other, so that the first pressing end of the first ejector pin disengages from the molding cavity.

2. The molding die according to claim 1, characterized in that: The first cavity has a first opening on the side facing the second cavity, and the second cavity has a second opening on the side facing the first cavity. When the first mold and the second mold do not block each other, the first pressing end is farther away from the first opening than the second opening.

3. The molding die according to claim 2, characterized in that: The second mold also includes an adjusting member. In the first direction, when the first mold and the second mold do not block each other, the adjusting member can block the second connecting seat from approaching the first connecting seat, so that the first pressing end is farther away from the first opening relative to the second opening.

4. The molding die according to claim 1, characterized in that: In the first direction, the first connecting seat is located on the side of the first mold opposite to the second mold, and the second connecting seat is located on the side of the second mold opposite to the first mold.

5. The molding die according to claim 4, characterized in that: The first module further includes a first limiting member, which can stop the first mold when it moves away from the first connecting seat to a first set distance in the first direction; The second module also includes a second limiting member. When the second connecting seat moves away from the second mold to a second set distance in the first direction, the second limiting member can stop the second connecting seat.

6. The molding die according to any one of claims 1 to 5, characterized in that: The first module further includes a first push rod, which is disposed on the first connecting seat; the second module further includes a second push rod, which is disposed on the second connecting seat. In the first direction, the first connecting seat and the second mold are close to each other, which can make the first ejector rod and the second ejector rod stop each other, so that the first connecting seat and the second connecting seat stop each other.

7. The molding die according to claim 6, characterized in that: The first mold has a through first guide hole, and the first ejector pin is disposed in the first guide hole. The second mold has a through second guide hole, and the second ejector pin is disposed in the second guide hole.

8. The molding die according to any one of claims 1 to 5, characterized in that: The first module further includes a first elastic element, which elastically acts on the first connecting seat and the first mold. When the first mold and the second mold stop each other, the first elastic element can apply an elastic force toward the second mold in the first direction to the first mold. The second module also includes a second elastic element, which acts elastically on the second mold and the second connecting seat. When the first connecting seat and the second connecting seat stop each other, the second elastic element can apply an elastic force toward the first connecting seat in the first direction to the second connecting seat.

9. The molding die according to any one of claims 1 to 5, characterized in that: The second module further includes an unloading assembly, which includes a third connecting seat and a second ejector pin. The second mold is connected to the third connecting seat, and the third connecting seat is movable relative to the second mold in the first direction. The second ejector pin is fixedly disposed on the third connecting seat, and the second ejector pin includes a second pressing end, which is configured to enter and exit the second cavity. In the first direction, when the first mold and the second mold do not stop each other, the second mold moves away from the first connecting seat, allowing the second pressing end to enter the second cavity.

10. A molding and sealing method, characterized in that, Using a molding die as described in any one of claims 1 to 9 to mold materials, comprising: Preparation steps: Place the material into the second cavity; Mold closing step: Drive the first connecting seat and the second mold to move closer to each other in the first direction until the first mold and the second mold stop each other; First injection molding step: After the first cavity and the second cavity are combined to form the molding cavity, plastic raw material is injected into the molding cavity; Needle removal step: With the first mold and the second mold mutually blocking each other, drive the first connecting seat and the second mold to continue to move closer to each other in the first direction until the first pressing end of the first ejector pin leaves the molding cavity; The second injection molding step: After the material leaves the first pressing end, plastic raw material is injected into the molding cavity.

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