In-mold assembly injection molds and injection assembly methods

Abstract

This invention discloses an in-mold assembly injection mold and an injection assembly method, relating to the field of injection molding equipment technology. The injection mold includes a moving mold assembly and a fixed mold assembly. The moving mold assembly is capable of opening and closing translational movements relative to the fixed mold assembly, and includes a moving module and at least two moving mold slider assemblies located on one side of the moving module that can reciprocate in a direction perpendicular to the mold opening direction. The fixed mold assembly includes a fixed module and at least two fixed mold slider assemblies located on one side of the fixed module that can reciprocate in a direction perpendicular to the mold opening direction. The moving module, at least two moving mold slider assemblies, and at least two fixed mold slider assemblies can enclose to form a first injection cavity, and the fixed module and at least two fixed mold slider assemblies can enclose to form a second injection cavity. The injection mold of this invention can achieve undercut demolding of the injection molded part in the assembly direction or in the opposite direction of the assembly direction, with a wide range of applications and strong applicability.

Description

Technical Field

[0001] This invention relates to the field of injection molding equipment technology, and in particular to an in-mold assembly injection mold and an injection assembly method. Background Technology

[0002] In-mold assembly technology refers to an advanced injection molding technology that uses two or more polymers within a single injection mold, employing special molding processes such as interlocking, welding, or co-injection to create immiscible polymer parts. This process produces fully assembled plastic parts with movable features, eliminating many subsequent assembly processes. Existing mold assembly mechanisms can only perform assembly actions perpendicular to the mold opening direction, and the assembled parts can only have ejection clips in the opposite direction of the assembly action. When the assembled product has ejection clips in both the assembly direction and the opposite direction, in-mold assembly cannot be completed because the clips in the assembly direction cannot be demolded. Therefore, existing in-mold assembly technology has limited applicability. Summary of the Invention

[0003] The main objective of this invention is to provide an in-mold assembly injection mold and an injection assembly method, aiming to solve the problem of limited applicability of existing in-mold assembly technologies.

[0004] To achieve the above objectives, the present invention provides an in-mold assembly injection mold, comprising:

[0005] The system comprises a moving mold assembly and a fixed mold assembly. The moving mold assembly is capable of translational movements relative to the fixed mold assembly for opening and closing the mold. The moving mold assembly includes a moving module and at least two moving mold slider assemblies disposed on one side of the moving module. The at least two moving mold slider assemblies are capable of reciprocating in a direction perpendicular to the mold opening direction. The fixed mold assembly includes a fixed module and at least two fixed mold slider assemblies disposed on one side of the fixed module. The at least two fixed mold slider assemblies are capable of reciprocating in a direction perpendicular to the mold opening direction. When the moving mold assembly and the fixed mold assembly are closed, the moving module, the at least two moving mold slider assemblies, and the at least two fixed mold slider assemblies enclose a first injection cavity for molding a first injection molded part, and the fixed module and the at least two fixed mold slider assemblies enclose a second injection cavity for molding a second injection molded part.

[0006] In one embodiment, the injection mold further includes a first driving component and a second driving component. The first driving component is disposed on the moving module and is used to drive the first injection molded part to move toward the second injection molded part so that the first injection molded part and the second injection molded part are assembled and connected. The second driving component is disposed on the stationary module and is used to drive the second injection molded part to move away from the stationary module so that the assembled first injection molded part and the second injection molded part are disengaged from the injection mold.

[0007] In one embodiment, the first driving assembly includes a first driving member and a first push rod, one end of the first push rod passing through the moving module and located on the side of the first injection cavity away from the second injection cavity, and the other end being driven to connect to the first driving member; the second driving assembly includes a second driving member and a second push rod, one end of the second push rod passing through the fixed module and located on the side of the second injection cavity away from the first injection cavity, and the other end being driven to connect to the second driving member.

[0008] In one embodiment, the injection mold further includes two fourth driving assemblies, each fourth driving assembly including a fourth driving member, a first connecting member, and a second connecting member. The fixed mold slider assembly and the moving mold slider assembly, which are located on the same side, are connected to the first connecting member via the second connecting member. In the mold opening direction, one of the fixed mold slider assembly and the moving mold slider assembly, which are located on the same side, is slidably connected to the second connecting member. The fourth driving member drives the first connecting member and is used to move the first connecting member in a direction perpendicular to the mold opening direction.

[0009] In one embodiment, the moving mold assembly further includes a moving mold fixing plate, the moving module is fixed on the moving mold fixing plate, and at least two moving mold slider assemblies are slidably connected to the moving mold fixing plate; the fixed mold assembly further includes a fixed mold fixing plate, the fixed module is fixed on the fixed mold fixing plate, and at least two fixed mold slider assemblies are slidably connected to the fixed mold fixing plate.

[0010] In one embodiment, the injection mold further includes a third driving assembly, which includes a third driving member disposed on the fixed mold plate and a transmission member connected to the moving mold plate. The third driving member drives the transmission member and is used to move the transmission member along the mold opening direction.

[0011] In one embodiment, the moving mold assembly can be translated relative to the fixed mold assembly to a first mold opening position and a second mold opening position. When the moving mold assembly is in the second mold opening position, the distance between it and the fixed mold assembly is greater than the distance between it and the fixed mold assembly when it is in the first mold opening position, and is also greater than the length of the assembled first injection molded part and the second injection molded part in the mold opening direction.

[0012] In one embodiment, the moving mold assembly further includes a first insert disposed on the moving mold assembly, one end of the first insert being inserted into the first injection cavity, the first insert extending along the mold opening direction, and the first driving assembly driving the first injection molded part to move along the first insert.

[0013] In one embodiment, the first insert is movably disposed on the moving module along the mold opening direction, and a limiting part is provided at one end of the first insert away from the first injection cavity. When the first insert moves to abut against the second injection molded part, the moving module stops the limiting part.

[0014] In one embodiment, an elastic element is provided between the limiting part and the moving module. When the first injection molded part moves toward the second injection molded part to disengage from the first insert, the elastic element is used to drive the first insert to reset.

[0015] In one embodiment, the first injection molded part has a first connecting portion, the second injection molded part has a second connecting portion that mates with the first connecting portion, and the moving mold assembly further includes a second insert disposed on the moving mold assembly. One end of the second insert passes through the first injection cavity and is placed inside the second injection cavity. The second insert is used to form the first connecting portion and the second connecting portion. The first insert is sleeved on the second insert.

[0016] In one embodiment, the moving module is provided with a first injection channel communicating with the first injection cavity, the stationary module is provided with a second injection channel communicating with the second injection cavity, and the injection mold further includes a first injection pipe and a second injection pipe, the outlet of the first injection pipe communicating with the first injection channel, and the outlet of the second injection pipe communicating with the second injection channel.

[0017] In one embodiment, the injection mold includes two sets of moving mold assemblies and two sets of fixed mold assemblies. The two fixed mold assemblies are stacked symmetrically and located between the two moving mold assemblies. The second injection cavity formed on the two fixed mold assemblies is connected through the second injection conduit.

[0018] In one embodiment, the first drive assembly further includes a push block surrounding a circumferential edge of the first injection cavity on the side away from the second injection cavity, and the first push rod is connected to the push block.

[0019] The present invention also proposes an injection molding assembly method for the injection mold described above, comprising the following steps:

[0020] The moving mold assembly and the fixed mold assembly are driven to close, forming a first injection cavity and a second injection cavity;

[0021] Injecting molding material into the first injection cavity and the second injection cavity to form a first injection molded part and a second injection molded part;

[0022] The moving mold assembly and the fixed mold assembly are driven to open the mold, and the two fixed mold slider assemblies disengage from the first injection molded part;

[0023] The two moving mold slider assemblies are driven to move away from each other in a direction perpendicular to the mold opening direction and disengage from the first injection molded part; the two fixed mold slider assemblies are driven away from each other in a direction perpendicular to the mold opening direction and disengage from the second injection molded part.

[0024] Control the first drive component to move the first injection molded part toward the second injection molded part until the first injection molded part and the second injection molded part are assembled.

[0025] The moving mold assembly is driven to move away from the fixed mold assembly to perform secondary mold opening;

[0026] The first drive component is reset, and the second drive component is controlled to move the first injection molded part away from the fixed module, until the assembled first and second injection molded parts are separated from the injection mold.

[0027] The second drive component is reset, the two moving mold slider components are driven to approach each other in a direction perpendicular to the mold opening direction, the two fixed mold slider components are driven to approach each other in a direction perpendicular to the mold opening direction, and the moving mold component and the fixed mold component are driven to re-close the mold.

[0028] The technical solution of the present invention provides a moving mold assembly comprising a moving module and at least two moving mold slider assemblies disposed on one side of the moving module, and a fixed mold assembly comprising a fixed module and at least two fixed mold slider assemblies disposed on one side of the fixed module. After the moving mold assembly moves relative to the fixed mold assembly to close the mold, the moving module, at least two moving mold slider assemblies, and at least two fixed mold slider assemblies enclose and form a first injection cavity for molding a first injection molded part, and the fixed module and at least two fixed mold slider assemblies enclose and form a second injection cavity for molding a second injection molded part. By configuring at least two of the moving mold slider assemblies to reciprocate in a direction perpendicular to the mold opening direction, and configuring at least two of the fixed mold slider assemblies to reciprocate in a direction perpendicular to the mold opening direction, after the moving mold assembly and the fixed mold assembly separate, at least two of the moving mold slider assemblies and at least two of the reciprocating fixed mold slider assemblies can move towards or away from each other in a direction perpendicular to the mold opening direction. This achieves the mutual approach or distance between the at least two moving mold slider assemblies and the mutual approach or distance between the at least two fixed mold slider assemblies, thereby achieving the separation of the first injection molded part from the moving mold slider assembly and the separation of the second injection molded part from the fixed mold slider assembly, while also achieving space avoidance between the first injection molded part and the second injection molded part. Therefore, after the moving mold assembly opens relative to the fixed mold assembly, the assembly direction of the first injection molded part on the moving mold assembly and the second injection molded part on the fixed mold assembly is parallel to the mold opening direction. Furthermore, since the first injection cavity is formed by at least two fixed mold slider assemblies, the undercut of the first injection molded part in the assembly direction formed by the fixed mold slider assemblies does not affect the separation of the first injection molded part from the fixed mold slider assemblies. Even when the assembled first injection molded part has undercuts in the assembly direction or in both directions opposite to the assembly direction, smooth injection and assembly are still maintained, resulting in a wide range of applications and strong applicability. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of an embodiment of the in-mold assembly injection mold of the present invention;

[0031] Figure 2 This is a schematic diagram illustrating the engagement of the moving mold assembly and the fixed mold assembly in one embodiment of the in-mold assembly injection mold of the present invention;

[0032] Figure 3 for Figure 2 Cross-sectional views of the moving mold assembly and the fixed mold assembly;

[0033] Figure 4 This is a schematic diagram of the moving module and moving mold slider assembly in one embodiment of the in-mold assembly injection mold of the present invention;

[0034] Figure 5 This is a schematic diagram of the fixed module and fixed mold slider assembly in one embodiment of the in-mold assembly injection mold of the present invention;

[0035] Figure 6 This is a schematic diagram of the connection structure of the fourth drive assembly, the moving mold assembly, and the fixed mold assembly in one embodiment of the in-mold assembly injection mold of the present invention;

[0036] Figure 7 for Figure 6 A schematic diagram of the connection structure between the second connecting member, the moving mold slider assembly, and the fixed mold slider assembly;

[0037] Figure 8 This is a schematic diagram of the installation structure of the fixed module, the fixed mold slider assembly and the fixed mold fixing plate in one embodiment of the in-mold assembly injection mold of the present invention;

[0038] Figure 9 This is a schematic diagram of the structure of the first and second branch flow channels in an embodiment of the in-mold assembly injection mold of the present invention;

[0039] Figure 10 This is a schematic diagram of the connection structure of the third drive assembly, the moving mold assembly, and the fixed mold assembly in one embodiment of the in-mold assembly injection mold of the present invention;

[0040] Figure 11 This is a schematic diagram of the structure of the first and second injection molded parts formed in one embodiment of the in-mold assembly injection mold of the present invention;

[0041] Figure 12This is a schematic flowchart of an embodiment of the injection molding assembly method of the present invention.

[0042] Explanation of icon numbers:

[0043]

[0044]

[0045] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0047] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0048] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0049] In-mold assembly technology refers to an advanced injection molding technology that uses two or more polymers within a single injection mold, employing special molding processes such as interlocking, welding, or co-injection to create immiscible polymer parts. This process produces fully assembled plastic parts with movable features, eliminating many subsequent assembly processes. Existing mold assembly mechanisms can only perform assembly actions perpendicular to the mold opening direction, and the assembled parts can only have undercuts in the opposite direction of the assembly action. When the assembled product has undercuts in the assembly direction or both the assembly and opposite directions, in-mold assembly cannot be completed because the undercuts in the assembly direction cannot be demolded. Therefore, existing in-mold assembly technology has limited applicability.

[0050] To address the above problems, this invention proposes an in-mold assembly injection mold.

[0051] Please see Figures 1 to 6 In this embodiment, the injection mold 10 includes a moving mold assembly 100 and a fixed mold assembly 200; wherein, the moving mold assembly 100 is capable of opening and closing translational movements relative to the fixed mold assembly 200; the moving mold assembly 100 includes a moving module 110 and at least two moving mold slider assemblies 120 disposed on one side of the moving module 110, and the at least two moving mold slider assemblies 120 are capable of reciprocating movement in a direction perpendicular to the mold opening direction; the fixed mold assembly 200 includes a fixed module 210 and a fixed mold slider assembly 200 disposed on the fixed mold assembly 200. At least two fixed mold slider assemblies 220 on one side of the fixed module 210 are reciprocating in a direction perpendicular to the mold opening direction; when the moving mold assembly 100 and the fixed mold assembly 200 are closed, the moving module 110, the two moving mold slider assemblies 120 and the two fixed mold slider assemblies 220 enclose to form a first injection cavity 11 for molding the first injection molded part 20, and the fixed module 210 and the two fixed mold slider assemblies 220 enclose to form a second injection cavity 12 for molding the second injection molded part 30.

[0052] By setting a moving mold assembly 100 including a moving module 110 and at least two moving mold slider assemblies 120 disposed on one side of the moving module 110, and a fixed mold assembly 200 including a fixed module 210 and at least two fixed mold slider assemblies 220 disposed on one side of the fixed module 210, after the moving mold assembly 100 translates and closes relative to the fixed mold assembly 200, the moving module 110, at least two moving mold slider assemblies 120 and at least two fixed mold slider assemblies 220 surround to form a first injection cavity 11 for molding a first injection molded part 20, and the fixed module 210 and at least two fixed mold slider assemblies 220 surround to form a second injection cavity 12 for molding a second injection molded part 30. By configuring at least two of the moving mold slider assemblies 120 to reciprocate in a direction perpendicular to the mold opening direction, and configuring at least two of the fixed mold slider assemblies 220 to reciprocate in a direction perpendicular to the mold opening direction, after the moving mold assembly 100 and the fixed mold assembly 200 are separated, at least two of the moving mold slider assemblies 120 and at least two of the reciprocating fixed mold slider assemblies 220 can move towards or away from each other in a direction perpendicular to the mold opening direction. This allows at least two of the moving mold slider assemblies 120 to move closer to or away from each other, and at least two of the fixed mold slider assemblies 220 to move closer to or away from each other. This achieves the separation of the first injection molded part 20 from the moving mold slider assembly 120 and the separation of the second injection molded part 30 from the fixed mold slider assembly 220, while also achieving space avoidance between the first injection molded part 20 and the second injection molded part 30. Therefore, after the moving mold assembly 100 opens relative to the fixed mold assembly 200, the assembly directions of the first injection molded part 20 on the moving mold assembly 110 and the second injection molded part 30 on the fixed mold assembly 210 are parallel to the mold opening direction. Furthermore, since the first injection cavity 11 is partially formed by at least two fixed mold slider assemblies 220, the undercut of the first injection molded part 20 in the assembly direction formed by the fixed mold slider assembly 220 does not affect the separation of the first injection molded part 20 from the fixed mold slider assembly 220. Even when the assembled first injection molded part 20 has undercuts in the assembly direction or in both the assembly direction and the opposite direction, smooth injection and assembly are still maintained, resulting in a wide range of applications and strong applicability.

[0053] Furthermore, the injection mold 10 also includes a first driving component 300 and a second driving component 400; the first driving component 300 is disposed on the moving module 110 and is used to drive the first injection molded part 20 to move toward the second injection molded part 30 so that the first injection molded part 20 and the second injection molded part 30 are assembled and connected; the second driving component 400 is disposed on the stationary module 210 and is used to drive the second injection molded part 30 to move away from the stationary module 210 so that the assembled first injection molded part 20 and the second injection molded part 30 are disengaged from the mold.

[0054] It can be seen that by setting a first driving component 300 to move the first injection molded part 20 toward the second injection molded part 30, the first injection molded part 20 moves toward the second injection molded part 30 and is assembled and connected with the second injection molded part 30; and by setting a second driving component 410 to move the second injection molded part 30 away from the fixed module 210, the assembled first injection molded part 20 and the second injection molded part 30 are separated from the injection mold 10. Finally, by resetting the first driving component 300 and the second driving component 400, and by moving the two moving mold slider assemblies 120 and the two fixed mold slider assemblies 220 toward each other in a direction perpendicular to the mold opening direction, the moving mold assembly 100 and the fixed mold assembly 200 can be re-closed and injected. The injection mold 10 of the present invention can realize the injection and assembly of the first injection molded part 20 and the second injection molded part 30 in the mold, saving subsequent assembly processes, and can realize the automatic separation of the assembled parts, realizing the repeated injection and assembly process, which greatly improves production efficiency.

[0055] Preferably, the fixed mold assembly 200 includes two fixed mold slider assemblies 220, and the moving mold assembly 100 includes two moving mold slider assemblies 120. Each of the two fixed mold slider assemblies 220 includes at least one fixed mold slider, and each of the two moving mold slider assemblies 120 includes at least one moving mold slider. When the second injection molded part 30 is asymmetrically arranged, the structures of the fixed mold sliders in the two fixed mold slider assemblies 220 are also different. When the second injection molded part 30 is symmetrically arranged, the fixed mold sliders in the two fixed mold slider assemblies 220 can be configured with the same structure and are symmetrically arranged. Similarly, when the first injection molded part 20 is asymmetrically arranged, the structures of the moving mold sliders in the two moving mold slider assemblies 120 are also different; when the first injection molded part 10 is symmetrically arranged, the moving mold sliders in the two moving mold slider assemblies 120 can be configured with the same structure and are symmetrically arranged. The portions of the fixed mold sliders in the two fixed mold slider assemblies 220 that define the first injection cavity are also symmetrically arranged. The fewer the number of fixed mold slider assemblies 220 and moving mold slider assemblies 120 corresponding to the same group of fixed module 210 and moving module 110, the easier it is to control the demolding of the first injection molded part 20 and the second injection molded part 30.

[0056] Specifically, for example, the first injection molded part 20 has a groove 22 at one end facing the second injection molded part 30, and the fixed mold slider assembly 220 has a protrusion 221 facing into the first injection cavity 11. When the first injection molded part 20 is injection molded, the protrusion 221 is used to form the groove 22. The shape of the protrusion 221 is adapted to the groove 22. The specific shape of the protrusion 221 is not limited and can be columnar, hemispherical, or other irregular shapes, as long as it ensures that the first injection molded part 20 can smoothly disengage from the protrusion 221 in the mold opening direction.

[0057] Please see Figure 2 and Figure 3 In one embodiment, the moving mold assembly 100 further includes a first insert 130 disposed on the moving mold assembly 110. One end of the first insert 130 is inserted into the first injection cavity 11. The first insert 130 extends along the mold opening direction, and the first drive assembly 300 drives the first injection molded part 20 to move along the first insert 130. The first insert 130 extends along the mold opening direction, and the assembly direction of the first injection molded part 20 and the second injection molded part 30 is parallel to the mold opening direction. This allows the first drive assembly 300 to move the first injection molded part 20 along the first insert 130, which serves as a guide to prevent the first injection molded part 20 from deviating from the correct assembly direction.

[0058] Furthermore, the first insert 130 is movably disposed on the moving module 110 along the mold opening direction. The end of the first insert 130 away from the first injection cavity 11 is provided with a limiting part 131. When the first insert 130 moves to abut against the second injection molded part 30, the moving module 110 stops the limiting part 131.

[0059] It is understandable that when one end of the first insert 130 is inserted into the first injection cavity 11, the first injection molded part 20 will be in close contact with the first insert 130 due to the shrinkage phenomenon after molding; and the first insert 130 is movably disposed on the moving module 110 along the mold opening direction, so that when the first driving member 310 drives the first injection molded part 20 to move, the first injection molded part 20 will drive the first insert 130 to move together. During the assembly of the first injection molded part 20 and the second injection molded part 30, the first insert 130 abuts against the second injection molded part 30. The first injection molded part 20 gradually detaches from the first insert 130, and the detached portion is assembled with the second injection molded part 30. That is, when the connection between the first injection molded part 20 and the second injection molded part 30 is small, most of the first injection molded part 20 remains tightly attached to the first insert 130. The first insert 130 plays a role in stabilizing the first injection molded part 20, preventing the first injection molded part 20 from shifting during the assembly process with the second injection molded part 30, and reducing the assembly difficulty of the first injection molded part 20 and the second injection molded part 30. At the same time, considering that when the first insert 130 abuts against the second injection molded part 30, if the first injection molded part 20 continues to drive the first insert 130 towards the second injection molded part 30, the first insert 130 will press against the second injection molded part 30, and as the pressing force increases, it may cause damage to the second injection molded part 30. Therefore, by providing a limiting part 131 at the end of the first insert 130 away from the first injection cavity 11, the moving module 110 stops the limiting part 131 when the first insert 130 moves to abut against the second injection molded part 30, or when it moves to maintain a small gap with the second injection molded part 30. Under the stopping action of the moving module 110, the first insert 130 cannot continue to move towards the second injection molded part 30. At this time, when the first injection molded part 20 is continued to move towards the second injection molded part 30, the first insert 130 remains stationary.

[0060] Specifically, the moving module 110 has a through channel through which the first insert 130 passes, allowing one end of the first insert 130 to be placed inside the first injection cavity 11. The end of the moving module 110 facing away from the first injection cavity 11 has a limiting cavity communicating with the through channel. The inner diameter of the limiting cavity matches the outer diameter of the limiting part 131, allowing the limiting part 131 to move within the limiting cavity along the mold opening direction. Clearly, when the first insert 130 moves to the point where the limiting part 131 abuts against the bottom of the limiting cavity, the first insert 130 is limited by the limiting part 131 and cannot continue moving towards the second injection cavity 12.

[0061] Meanwhile, considering that after the first injection molded part 20 and the second injection molded part 30 are assembled, they need to be moved away from the fixed module 210 to detach from the injection mold 10. Even if the second injection molded part 30 moves towards the first insert 130, the first insert 130 will hinder the normal movement and detachment of the second injection molded part 30. Therefore, in one embodiment, an elastic member is provided between the limiting part 131 and the moving module 110. When the first injection molded part 20 moves towards the second injection molded part 30 to detach from the first insert 130, the elastic member is used to drive the first insert 130 to reset. As described above, due to the shrinkage phenomenon after the first injection molded part 20 is formed, it will closely adhere to the first insert 130, allowing the first insert 130 to move towards the second injection cavity 12 under the action of the first injection molded part 20. The elastic element is elastically compressed and possesses elastic potential energy. After the first injection molded part 20 and the second injection molded part 30 are assembled, the first injection molded part 20 disengages from the first insert 130, that is, the first injection molded part 20 releases its restriction on the first insert 130. Under the action of the elastic force of the elastic element, the first insert 130 moves away from the second injection cavity 12, thus resetting the first insert 130 and preventing it from hindering the movement and disengagement of the second injection molded part 30. Furthermore, when the moving module 110 and the fixed module 210 reset and close the mold for injection molding again, the first insert 130 can be guaranteed to automatically reset to the same position, preventing the first insert 130 from affecting the molding accuracy and assembly error of the first injection molded part 20.

[0062] Please see Figure 3 and Figure 11 In one embodiment, the first injection molded part 20 has a first connecting part 21, and the second injection molded part 30 has a second connecting part 31 that is connected to the first connecting part 21. The moving mold assembly 100 further includes a second insert 140 disposed on the moving mold 110. One end of the second insert 140 passes through the first injection cavity 11 and is placed in the second injection cavity 12. The second insert 140 is used to form the first connecting part 21 and the second connecting part 31.

[0063] By setting the second insert 140 on the moving module 110, and setting one end of the second insert 140 to pass through the first connecting part 21 and be placed at the second connecting part 31, it is only necessary to set the extension direction of the second insert 140 to be parallel to the mold opening direction. This ensures that after the mold opening, the first connecting part 21 and the second connecting part 31, which are required to be connected between the moving mold assembly 100 and the fixed mold assembly 200, remain on the same straight line parallel to the mold opening direction. When the first injection molded part 20 and the second injection molded part 30 are assembled by driving the first driving member 310, it is only necessary to drive the first injection molded part 20 to move towards the second injection molded part 30 along the mold opening direction. This ensures that the first connecting part 21 and the second connecting part 31 are always aligned, improving the accuracy of injection molding assembly and reducing the difficulty of assembly.

[0064] Preferably, in one embodiment, the first insert 130 is fitted onto the second insert 140. As can be seen from the above, when the first driving assembly 300 drives the first injection molded part 20 to move, it can move along the first insert 130. The first insert 130 serves as a guide to prevent the first injection molded part 20 from deviating from the correct direction of movement, while the second insert 140 serves to position the first connecting part 21 and the second connecting part 31. After the moving mold assembly 100 and the fixed mold assembly 200 are opened, the second insert 140 disengages from the second injection molded part 30. The first insert 130, driven by the first injection molded part 20, needs to move a certain distance toward the second injection molded part 30 to achieve contact with the second injection molded part 30. The first insert 130 is configured to be sleeved on the second insert 140, so that when the first insert 130 moves toward the second injection molded part 30, it can move along the second insert 140. That is, the second insert 140 further guides the first insert 130, so that when the first injection molded part 20 and the second injection molded part 30 are assembled, the first connecting part 21 and the second connecting part 31 are aligned.

[0065] Please see Figure 8In one embodiment, the moving mold assembly 100 further includes a moving mold fixing plate 150, the moving module 110 is fixed on the moving mold fixing plate 150, and at least two moving mold slider assemblies 120 are slidably connected to the moving mold fixing plate 150; the fixed mold assembly 200 further includes a fixed mold fixing plate 230, the fixed module 210 is fixed on the fixed mold fixing plate 230, and at least two fixed mold slider assemblies 220 are slidably connected to the fixed mold fixing plate 230. By placing the moving module 110 and the moving mold slider assembly 120 on the moving mold fixing plate 150, when the moving mold fixing plate 150 moves relative to the fixed mold fixing plate 230, it can simultaneously drive the moving module 110 and the moving mold slider assembly 120 to move together, thereby realizing the opening and closing mold movement of the moving mold assembly 100 relative to the fixed mold assembly 200. By fixing the moving module 110 to the moving mold fixing plate 150, and slidably connecting at least two moving mold slider assemblies 120 to the moving mold fixing plate 150, the at least two moving mold slider assemblies 120 can reciprocate on the moving mold fixing plate 150 in a direction perpendicular to the mold opening direction.

[0066] Furthermore, the injection mold 10 also includes a third driving assembly 700. The third driving assembly 700 includes a third driving member 710 disposed on the fixed mold fixing plate 230 and a transmission member 720 connected to the moving mold fixing plate 150. The third driving member 710 drives the transmission member 720 and is used to drive the transmission member 720 to move along the mold opening direction. The transmission member 720 is connected to the moving mold fixing plate 150. When the third driving member 710 drives the transmission member 720 to move along the mold opening direction, it drives the moving mold fixing plate 150 to move along the mold opening direction. When the third driving member 710 drives the moving mold fixing plate 150 away from the fixed mold fixing plate 230, the mold opening movement of the moving mold assembly 100 relative to the fixed mold assembly 200 is realized. When the third driving member 710 drives the moving mold fixing plate 150 closer to the fixed mold fixing plate 230, the mold closing movement of the moving mold assembly 100 relative to the fixed mold assembly 200 is realized.

[0067] Preferably, the moving mold assembly 100 can be translated relative to the fixed mold assembly 200 to a first mold opening position and a second mold opening position. When the moving mold assembly 100 is in the second mold opening position, the distance between the moving module 110 and the fixed module 210 is greater than the distance between the moving module 110 and the fixed module 210 when it is in the first mold opening position, and is also greater than the length of the assembled first injection molded part 20 and the second injection molded part 30 in the mold opening direction.

[0068] The greater the distance the moving mold assembly 100 and the fixed mold assembly 200 move when the mold opens, the greater the distance the first injection molded part 20 needs to move during the assembly of the first injection molded part 20 and the second injection molded part 30. This also results in a longer assembly time and increases the likelihood of unexpected situations such as displacement or deflection of the first injection molded part 20 during assembly. Conversely, if the distance the moving mold assembly 100 and the fixed mold assembly 200 move when the mold opens is too small, the gap between the moving module 110 and the fixed module 210 will be too small. Consequently, when the assembled first injection molded part 20 and the second injection molded part 30 are subsequently detached from the injection mold 10, they may not be able to detach properly due to insufficient space. Therefore, by setting a first mold opening position and a second mold opening position, when the moving mold assembly 100 is in the second mold opening position, the distance between the moving module 110 and the fixed module 210 is greater than the distance between the moving module 110 and the fixed module 210 when it is in the first mold opening position, and is also greater than the length of the assembled first injection molded part 20 and the second injection molded part 30 in the mold opening direction; this makes the distance between the moving module 110 and the fixed module 210 smaller when the moving mold assembly 100 is in the first mold opening position, which facilitates the assembly of the first injection molded part 20 and the second injection molded part 30, and the distance between the moving module 110 and the fixed module 210 larger when the moving mold assembly 100 is in the second mold opening position, which facilitates the disengagement of the assembled first injection molded part 20 and the second injection molded part 30 from the injection mold 10.

[0069] Please see Figures 4 to 9 In one embodiment, the moving module 110 is provided with a first injection channel 111 communicating with the first injection cavity 11, and the injection mold 10 further includes a first injection pipe 510, the outlet of the first injection pipe 510 communicating with the first injection channel 111; the stationary module 210 is provided with a second injection channel 211 communicating with the second injection cavity 12, and the injection mold 10 further includes a second injection pipe 620, the outlet of the second injection pipe 620 communicating with the second injection channel 211.

[0070] It is understood that after the fixed mold assembly 200 and the moving mold assembly 100 close to form the first injection cavity 11 and the second injection cavity 12, corresponding injection molding materials need to be injected into the first injection cavity 11 and the second injection cavity 12 to form the first injection molded part 20 and the second injection molded part 30. By providing a first injection flow channel 111 communicating with the first injection cavity 11 on the moving mold assembly 110, and providing a first injection pipe 510 communicating with the first injection flow channel 111 through the outlet, the corresponding injection molding material only needs to be introduced into the first injection pipe 510 to allow the injection molding material to flow into the first injection cavity 11. After injection molding is completed, cooling is performed to form the first injection molded part 20. Correspondingly, by providing a second injection channel 211 communicating with the second injection cavity 12 on the fixed module 210, and providing a second injection pipe 620 communicating with the second injection channel 211 through the outlet, the injection material can flow into the second injection cavity 12 simply by introducing the corresponding injection material into the second injection pipe 620. After injection molding, cooling is performed to form the second injection molded part 30. Meanwhile, since the first injection cavity 11 and the second injection cavity 12 are independent of each other, and there is no communication between the first injection channel 111 and the second injection channel 211, or between the first injection pipe 510 and the second injection pipe 620, the first injection molded part 20 and the second injection molded part 30 are independent during the injection molding process. The first injection molded part 20 and the second injection molded part 30 can be injection molded using the same injection material or using different injection materials.

[0071] Furthermore, in one embodiment, there are multiple first injection cavities 11 and multiple second injection cavities 12. Multiple first injection cavities 11 are spaced apart along the length direction of the moving mold assembly 110, and multiple second injection cavities 12 are spaced apart along the length direction of the fixed mold assembly 210. The end faces of the moving mold assembly 110 and the fixed mold assembly 210 that are molded together are their length-extending end faces. After the same moving mold assembly 100 and fixed mold assembly 200 are molded together, multiple first injection cavities 11 and multiple second injection cavities 12 are formed. Correspondingly, after injection molding is completed, multiple first injection molded parts 20 and multiple second injection molded parts 30 can be formed. Simultaneously, the assembly and demolding of multiple first injection molded parts 20 and multiple second injection molded parts 30 can be further performed, further improving production and assembly efficiency.

[0072] Multiple first injection cavities 11 and multiple second injection cavities 12 can be formed between the same set of fixed modules 210 and moving modules 110. In this case, the number of first injection cavities 11 and second injection cavities 12 formed is affected by the length of the fixed modules 210 and moving modules 110. Therefore, in one embodiment, the moving mold assembly 100 includes multiple moving modules 110, and the moving mold assembly 100 also includes a moving mold fixing plate 150. The multiple moving modules 110 are fixed at intervals on the moving mold fixing plate 150, and the moving mold slider assembly 120 is slidably connected to the moving mold fixing plate 150. The fixed mold assembly 200 includes multiple fixed modules 210, and the fixed mold assembly 200 also includes a fixed mold fixing plate 230. The multiple fixed modules 210 are fixed at intervals on the fixed mold fixing plate 230, and the fixed mold slider assembly 220 is slidably connected to the fixed mold fixing plate 230.

[0073] It is understood that each of the moving modules 110 corresponds to two moving mold slider assemblies 120. When the fixed mold assembly 200 and the moving mold assembly 100 open the mold, the moving mold fixing plate 150 moves away from the fixed module 210, and drives the moving module 110 and the moving mold slider assembly 120 to move together in the same direction. The moving mold slider assembly 120 is slidably connected to the moving mold fixing plate 150. Specifically, the moving mold fixing plate 150 is provided with a slide rail extending in a direction perpendicular to the mold opening direction, and the moving mold slider assembly 120 is provided with a corresponding slide groove. The moving mold slider assembly 120 is slidably connected to the slide rail through the slide groove, so that the two moving mold slider assemblies 120 on the same moving mold 110 can move closer and further away from each other on the moving mold fixing plate 150 in a direction perpendicular to the mold opening direction; alternatively, the moving mold fixing plate 150 may be provided with a slide groove extending in a direction perpendicular to the mold opening direction, and the moving mold slider assembly 120 may be provided with a corresponding slide rail, and the moving mold slider assembly 120 may be slidably connected to the slide groove through the slide rail.

[0074] Similarly, each fixed module 210 corresponds to two fixed mold slider assemblies 220. Multiple fixed modules 210 are fixed at intervals on the fixed mold fixing plate 230, which integrates and fixes the multiple fixed modules 210. The fixed mold slider assembly 220 is slidably connected to the fixed mold fixing plate 230. Specifically, the fixed mold fixing plate 230 has a slide rail extending perpendicular to the mold opening direction, and the fixed mold slider assembly 220 has a corresponding slide groove. The fixed mold slider assembly 220 is slidably connected to the slide rail through the slide groove, allowing two fixed mold slider assemblies 220 on the same fixed module 210 to move closer and further apart on the fixed mold fixing plate 230 along the direction perpendicular to the mold opening direction. Alternatively, the fixed mold fixing plate 230 can have a slide groove extending perpendicular to the mold opening direction, and the fixed mold slider assembly 220 can have a corresponding slide rail, with the fixed mold slider assembly 220 slidably connected to the slide groove through the slide rail.

[0075] Preferably, multiple moving modules 110 are fixed at intervals on the moving mold fixing plate 150 in the sliding direction of the moving mold slider assembly 120, and correspondingly, multiple fixed modules 210 are fixed at intervals on the fixed mold fixing plate 230 in the sliding direction of the fixed mold slider assembly 220, so that the injection mold 10 is generally arranged as a cuboid, which facilitates the placement and operation of the injection mold 10; and the injection mold 10 has multiple first injection cavities 11 and multiple second injection cavities 12 in both the length and width directions, making reasonable use of the space of the injection mold 10 itself.

[0076] Please see Figure 9 and Figure 10 In one embodiment, the injection mold 10 further includes a first runner mounting plate 500 connected to the moving mold fixing plate 150 and a second runner mounting plate 600 connected to the fixed mold fixing plate 230. The first runner mounting plate 500 is provided with a first branch runner 520, and a plurality of first injection pipes 510 are connected to the first branch runner 520. The second runner mounting plate 600 is provided with a second branch runner 630, and a plurality of second injection pipes 620 are connected to the second branch runner 630. Both the first branch runner 520 and the second branch runner 630 have a feed port that communicates with the outside.

[0077] As described above, the first injection cavity 11 receives injection material through the first injection pipe 510, and the second injection cavity 12 receives injection material through the second injection pipe 620. When multiple first injection cavities 11 and multiple second injection cavities 12 are formed, the number of first injection pipes 510 and multiple second injection pipes 620 also needs to be set. By setting the first diversion channel 520, multiple first injection pipes 510 are connected to the first diversion channel 520. The first diversion channel 520 has a feed port connected to the outside. That is, injection material is only needed to be fed into the first diversion channel 520 through the feed port, and then the first diversion channel 520 distributes the injection material to the multiple first injection pipes 510 connected to it, and finally realizes the molding of the first injection part 20 in multiple first injection cavities 11. By setting up multiple second distribution channels 630, all multiple second injection pipes 620 are connected to the second distribution channels 630. Each second distribution channel 630 has an inlet connected to the outside, meaning that injection molding material is introduced into the second distribution channel 630 through this inlet, and then the second distribution channel 630 distributes the injection molding material to the multiple connected second injection pipes 620, ultimately achieving the molding of the second injection molded parts 30 within the multiple second injection cavities 12. This avoids the need for separate inlets connected to the multiple first injection pipes 510 and the multiple second injection pipes 620, reducing the difficulty of synchronously injection molding the multiple first injection cavities 11 and the multiple second injection cavities 12.

[0078] Specifically, the first diversion channel 520 is disposed on the first channel mounting plate 500. One end of the first injection pipe 510 is connected to the first diversion channel 520, and the other end is connected to the first injection channel 111 on the moving module 110. The first channel mounting plate 500 is connected to the moving mold fixing plate 150. The moving module 110 is fixedly connected to the moving mold fixing plate 150. When the moving mold assembly 100 opens the mold, the moving mold fixing plate 150 and the first channel mounting plate 500 move together as a whole. The first injection pipe 510 always remains connected to the first diversion channel 520 and remains stationary relative to the moving module 110. Similarly, the second branch flow channel 630 is disposed on the second flow channel mounting plate 600. One end of the second injection pipe 620 is connected to the second branch flow channel 630, and the other end is connected to the second injection flow channel 211 on the fixed module 210. The second flow channel mounting plate 600 is connected to the fixed mold fixing plate 230, and the fixed module 210 is fixedly connected to the fixed mold fixing plate 230. The fixed mold fixing plate 230 and the second flow channel mounting plate 600 can be regarded as a whole. The second injection pipe 620 is always connected to the second branch flow channel 630. The first branch flow channel 520 can be formed by a connecting channel provided inside the first flow channel mounting plate 500, or it can be disposed independently of the first flow channel mounting plate 500. The first flow channel mounting plate 500 is provided with a mounting groove adapted to the first branch flow channel 520 on the side facing the moving mold fixing plate 150. The first branch flow channel 520 is fixedly installed in the mounting groove. Similarly, the second diversion channel 630 can be formed by a connecting channel provided inside the second channel mounting plate 600, or it can be set independently of the second channel mounting plate 600. The second channel mounting plate 600 is provided with a mounting groove adapted to the second diversion channel 630 on the side facing the fixed mold fixing plate 230, and the second diversion channel 630 is fixedly installed in the mounting groove.

[0079] Preferably, the first diversion channel 520 is symmetrically arranged, and the inlet of the first diversion channel 520 is located in the middle of the first diversion channel 520. The plurality of first injection pipes 510 are also symmetrically arranged on the first diversion channel 520, so that after injection molding material is introduced into the first diversion channel 520, the injection molding material can flow evenly into each of the first injection pipes 510. Correspondingly, the second diversion channel 630 is also symmetrically arranged, and the inlet of the second diversion channel 630 is located in the middle of the second diversion channel 630. The plurality of second injection pipes 620 are also symmetrically arranged on the second diversion channel 630, so that after injection molding material is introduced into the second diversion channel 630, the injection molding material can flow evenly into each of the second injection pipes 620. Meanwhile, the outlet of the first injection pipe 510 is located between two adjacent first injection cavities 11 and is connected to the two first injection cavities 11, that is, the same first injection pipe 510 supplies the injection material in the two first injection cavities 11; the outlet of the second injection pipe 620 is located between two adjacent second injection cavities 12 and is connected to the two second injection cavities 12, that is, the same second injection pipe 620 supplies the injection material in the two second injection cavities 12; so as to reduce the number of the first injection pipe 510 and the second injection pipe 620, simplify the structure of the injection mold 10, and reduce the manufacturing cost of the injection mold 10.

[0080] Please see Figure 1 and Figure 10 In one embodiment, the injection mold 10 includes two sets of moving mold assemblies 100 and two sets of fixed mold assemblies 200. The two fixed mold assemblies 200 are stacked symmetrically and located between the two moving mold assemblies 100. The second injection cavity 12 formed on the two fixed mold assemblies 200 is connected to the second branch flow channel 630 on the same second flow channel mounting plate 600 through the second injection pipe 620.

[0081] By setting up two sets of moving mold components 100 and two sets of fixed mold components 200, the number of the first injection cavity 11 and the second injection cavity 12 formed after the moving mold component 100 and the corresponding fixed mold component 200 are closed is doubled. The number of the first injection molded part 20 and the second injection molded part 30 that can be assembled and demolded simultaneously is increased, further improving production and assembly efficiency.

[0082] It is understood that, since the two fixed mold components 200 are stacked symmetrically and located between the two moving mold components 100, the second injection cavities 12 formed on the two fixed mold components 200 are connected to the second branch flow channel 630 on the same second flow channel mounting plate 600 through the second injection pipe 620. That is, the second injection cavities 12 formed by the two fixed mold components 200 are the same and share the same second branch flow channel 630, and the injection molding materials used are also the same. Considering that the first injection cavities 11 formed by the two moving mold components 100 and the corresponding fixed mold components 200 are independent of each other, and the first branch flow channels 520 in the two animation components are also independent of each other, different injection molding materials can be introduced into the first injection cavity 11 formed after the moving mold components 100 and the corresponding fixed mold components 200 are closed, so as to form the first injection molded part 20 formed by injection molding of different materials. Furthermore, in one embodiment, the shapes of the first injection cavity 11 formed after the moving mold assembly 100 and the corresponding fixed mold assembly 200 are different, so that first injection molded parts 20 of different shapes can be formed, which greatly enhances the applicability of the injection mold 10.

[0083] Specifically, in one embodiment, the injection mold 10 further includes a third drive assembly 700, which includes a third drive member 710 disposed on the fixed mold fixing plate 230 and a transmission member 720 connecting the moving mold fixing plate 150 and / or the first runner mounting plate 500. The third drive member 710 drives the transmission member 720 and is used to drive the transmission member 720 to move along the mold opening direction.

[0084] As described above, the first runner mounting plate 500 is connected to the moving mold fixing plate 150. When the moving mold assembly 100 opens, the first runner mounting plate 500 and the moving mold fixing plate 150 move together as a whole. The transmission component 720 can be connected to the moving mold fixing plate 150, the first runner mounting plate 500, or both. Under the drive of the third driving component 710, the transmission component 720 moves along the mold opening direction, causing the first runner mounting plate 500 and the moving mold fixing plate 150 to move together along the mold opening direction, thereby realizing the mold opening movement of the moving mold assembly 100. When the injection mold 10 includes two sets of moving mold assemblies 100 and two sets of fixed mold assemblies 200, the third driving member 710 is disposed on either of the two sets of fixed mold assemblies 200, and the transmission member 720 is connected to each of the moving mold assemblies 100 located on both sides. The third driving member 710 can simultaneously drive the two sets of moving mold assemblies 100 to open the mold. Specifically, the third driving member 710 is a hydraulic cylinder, and the transmission member 720 is a rack. The two racks are respectively located on both sides of the hydraulic cylinder. The hydraulic cylinder is connected to the rack through a gear drive. During the rotation of the gear driven by the hydraulic cylinder, the rack moves simultaneously along the mold opening direction or simultaneously along the mold closing direction under the drive of the gear, realizing the opening and closing of the two sets of moving mold assemblies 100. Obviously, the third driving member 710 can also be a pneumatic cylinder, a hydraulic cylinder, etc., and the transmission member 720 can also be a rifle rod or other mechanical transmission structure.

[0085] Please see Figure 2 , Figure 3 and Figure 6 In one embodiment, the first driving assembly 300 includes a first driving member 310 and a first push rod 320. One end of the first push rod 320 passes through the moving module 110 and is located on the side of the first injection cavity 11 away from the second injection cavity 12, and the other end is driven to connect to the first driving member 310. The second driving assembly 400 includes a second driving member 410 and a second push rod 420. One end of the second push rod 420 passes through the fixed module 210 and is located on the side of the second injection cavity 12 away from the first injection cavity 11, and the other end is driven to connect to the second driving member 410.

[0086] Considering that the first driving member 310 needs to maintain the stability of the force on the first injection molded part 20 during the process of driving the first push rod 320 to push against the first injection molded part 20, and to avoid the first injection molded part 20 from shifting or deflecting during movement, which would prevent it from being properly assembled with the second injection molded part 30, the number of the first push rods 320 can be set to multiple. One end of the multiple first push rods 320 is arranged circumferentially at intervals on the side of the first injection cavity 11 away from the second injection cavity 12. The first driving member 310 simultaneously drives the multiple first push rods 320 to push against one side of the first injection molded part 20, so as to avoid uneven force on the first injection molded part 20.

[0087] Unlike the above, in one embodiment, the first driving assembly 300 further includes a push block 330 surrounding the circumferential edge of the first injection cavity 11 on the side away from the second injection cavity 12, and the first push rod 320 is connected to the push block 330. Since the push block 330 is surrounding the circumferential edge of the first injection cavity 11 on the side away from the second injection cavity 12, after the first injection molded part 20 is formed, the push block 330 surrounds the circumferential edge of the first injection molded part 20, and the first push rod 320 drives the push block 330 to push against the first injection molded part 20, thus avoiding uneven force on the first injection molded part 20 in the circumferential direction, which could lead to displacement or deflection.

[0088] Similarly, to ensure the smooth disengagement of the first injection molded part 20 and the second injection molded part 30 after assembly, the number of second push rods 420 can also be set to multiple. One end of each of the multiple second push rods 420 is spaced apart circumferentially on the side of the second injection cavity 12 away from the first injection cavity 11. The second drive member 410 simultaneously drives the multiple second push rods 420 to push against one side of the two injection molded parts, avoiding uneven force on the second injection molded part 30. Furthermore, the second drive assembly 400 can also be provided with a top plate. The ends of the multiple second push rods 420 away from the second injection cavity 12 are all connected to the top plate. The second drive member 410 drives the top plate to move, thereby moving all the second push rods 420 together as a whole. When there are multiple first injection cavities 11 and second injection cavities 12, there are also multiple first injection molded parts 20 and second injection molded parts 30. That is, multiple first driving components 310 are needed to drive the first injection molded part 20, and multiple second driving components 410 are needed to drive the second injection molded part 30. In order to facilitate the installation of multiple first driving components 310 and second driving components 410, both the moving mold assembly 100 and the fixed mold assembly 200 can be provided with driving component fixing plates for fixing multiple first driving components 310 and second driving components 410.

[0089] Please see Figure 6 and Figure 7 In one embodiment, the injection mold 10 further includes two fourth drive assemblies 800. Each fourth drive assembly 800 includes a fourth drive member 810, a first connector 820, and a second connector 830. The fixed mold slider assembly 220 and the moving mold slider assembly 120, which are located on the same side, are connected to the first connector 820 via the second connector 830. In the mold opening direction, one of the fixed mold slider assembly 220 and the moving mold slider assembly 120, which are located on the same side, is slidably connected to the second connector 830. The fourth drive member 810 drives the first connector 820 and is used to move the first connector 820 in a direction perpendicular to the mold opening direction.

[0090] The fourth driving member 810 drives the first connecting member 820 to move in a direction perpendicular to the mold opening direction. The fixed mold slider assembly 220 and the moving mold slider assembly 120, which are located on the same side, are connected to the first connecting member 820 through the second connecting member 830. Driven by the first connecting member 820, the fixed mold slider assembly 220 and the moving mold slider assembly 120, which are located on the same side, also move in a direction perpendicular to the mold opening direction. Obviously, the fixed mold slider assembly 220 and the moving mold slider assembly 120 located on the other side are driven by the fourth driving member 810 in the fourth driving assembly 800. Through the two independent fourth driving members 810, the two opposing fixed mold slider assemblies 220 can move away from each other or move closer to each other in the direction perpendicular to the mold opening, so as to realize the separation of the second injection molded part 30 from the two fixed mold slider assemblies 220; similarly, the two opposing moving mold slider assemblies 120 can also move away from each other or move closer to each other in the direction perpendicular to the mold opening, so as to realize the separation of the first injection molded part 20 from the two moving mold slider assemblies 120.

[0091] By driving the fixed mold slider assembly 220 and the moving mold slider assembly 120 located on the same side using the same fourth driving member 810, the number of driving members can be reduced, and synchronous movement of the fixed mold slider assembly 220 and the moving mold slider assembly 120 can be achieved. Considering that the fixed mold slider assembly 220 and the moving mold slider assembly 220 located on the same side need to move in the direction perpendicular to the mold opening direction, they also need to move in the mold opening direction to achieve the mold opening of the moving mold assembly 100 and the fixed mold assembly 200. By having one of the fixed mold slider assembly 220 and the moving mold slider assembly 120 located on the same side in the mold opening direction slidably connected to the second connector 830 in a fourth drive assembly 800, and one of the fixed mold slider assembly 220 and the moving mold slider assembly 120 located on the other side slidably connected to the second connector 830 in another fourth drive assembly 800, the fixed mold slider assembly 220 and / or the moving mold slider assembly 120 can move relative to the second connector 830 when the moving mold assembly 100 and the fixed mold assembly 200 are opened. Specifically, the moving mold slider assembly 120 of the fixed mold slider assembly 220 and the moving mold slider assembly 120 located on the same side is slidably connected to the second connector 830 in one of the fourth drive assemblies 800, and the fixed mold slider assembly 220 of the fixed mold slider assembly 220 and the moving mold slider assembly 120 located on the other side is slidably connected to the second connector 830 in another of the fourth drive assemblies 800; the fixed mold slider assembly 220 and the moving mold slider assembly 120 can only slide relative to the second connector 830 in the mold opening direction, while their movement in the direction perpendicular to the mold opening is restricted, so as to ensure that the first connector 820 can drive the fixed mold slider assembly 220 and the moving mold slider assembly 120 located on the same side to move synchronously. The fixed mold slider assembly 220 and the moving mold slider assembly 120 can be connected to the second connector 830 by bolts or screws. The second connector 830 is provided with a sliding groove extending along the mold opening direction. When one end of the bolt or screw is connected to the fixed mold slider assembly 220 or the moving mold slider assembly 120, and the other end is located in the sliding groove, the fixed mold slider assembly 220 or the moving mold slider assembly 120 can be slidably connected to the second connector 830 in the mold opening direction.

[0092] Please see Figure 11In one embodiment, the first injection molded part 20 is a roller, the first connecting part 21 is the shaft hole of the roller, the second injection molded part 30 is a retaining shaft, and the second connecting part 31 is the rotating shaft of the retaining shaft. In this case, the first insert 130 can be configured as a sleeve, and one end of the first insert 130 inserted into the first injection cavity 11 forms the shaft hole of the roller. After the roller shrinks during injection molding, it is tightly fitted onto the first insert 130. Driven by the first driving assembly 300, the roller moves towards the retaining shaft, so that the rotating shaft is inserted into the shaft hole, thus assembling the roller and the retaining shaft. By changing the injection molding size of the rotating shaft and / or the shaft hole, clearance fit, transition fit, and interference fit can be achieved between the roller and the retaining shaft, meaning that the component products can achieve three states: rotation, fixation, and damping during rotation. Obviously, the first injection molded part 20 and the second injection molded part 30 can be other similar structures with shaft holes and rotating shafts, all of which can achieve injection molding assembly within the injection mold 10.

[0093] Please see Figure 12 The present invention also proposes an injection molding assembly method for the injection mold described above, which includes the following steps:

[0094] Step S100: Drive the moving mold assembly and the fixed mold assembly to close the mold, forming the first injection cavity and the second injection cavity;

[0095] Step S200: Inject molding material into the first injection cavity and the second injection cavity to form a first injection molded part and a second injection molded part;

[0096] Step S300: Drive the moving mold assembly and the fixed mold assembly to open the mold, and the two fixed mold slider assemblies disengage from the first injection molded part;

[0097] Step S400: Drive the two moving mold slider assemblies away from each other in a direction perpendicular to the mold opening direction and disengage from the first injection molded part; drive the two fixed mold slider assemblies away from each other in a direction perpendicular to the mold opening direction and disengage from the second injection molded part;

[0098] Step S500: Control the first drive assembly to move the first injection molded part toward the second injection molded part until the first injection molded part and the second injection molded part are assembled;

[0099] Step S600: Drive the moving mold assembly to move away from the fixed mold assembly to perform secondary mold opening;

[0100] Step S700: Control the first drive component to reset, and control the second drive component to drive the first injection molded part to move away from the fixed module, until the assembled first injection molded part and the second injection molded part are separated from the injection mold.

[0101] Step S800: Control the second drive component to reset, drive the two moving mold slider components to move closer to each other in a direction perpendicular to the mold opening direction, drive the two fixed mold slider components to move closer to each other in a direction perpendicular to the mold opening direction, and drive the moving mold component and the fixed mold component to re-close the mold.

[0102] It is understandable that in step S300, the greater the distance the moving mold assembly and the fixed mold assembly move when opening the mold, the greater the distance the first injection molded part needs to move during the assembly of the first and second injection molded parts, and the longer the assembly time. This also makes it easier for the first injection molded part to experience unexpected situations such as displacement or deflection during assembly. Conversely, if the distance the moving mold assembly and the fixed mold assembly move when opening the mold is too small in step S300, the gap between the moving and fixed mold assemblies will be too small. This will cause the assembled first and second injection molded parts to be unable to properly detach from the injection mold due to insufficient space when they are subsequently detached from the injection mold. Therefore, by controlling the first driving component in step S500 to move the first injection molded part toward the second injection molded part until the first and second injection molded parts are assembled, and by controlling the first driving component to reset in step S700 and controlling the second driving component to move the first injection molded part away from the fixed mold to the point where the assembled first and second injection molded parts are separated from the injection mold, adding step S600 to drive the moving mold component to move away from the fixed mold component for secondary mold opening, it is possible to achieve short-distance mold opening between the moving mold component and the fixed mold component in step S300, reducing the assembly difficulty of the first and second injection molded parts, and then performing secondary mold opening between the moving mold component and the fixed mold component to provide sufficient clearance space for the separation of the assembled first and second injection molded parts.

[0103] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An in-mold assembly injection mold, characterized in that, include: The system comprises a moving mold assembly and a fixed mold assembly. The moving mold assembly is capable of translational opening and closing relative to the fixed mold assembly. The moving mold assembly includes a moving module and at least two moving mold slider assemblies disposed on one side of the moving module. The at least two moving mold slider assemblies are reciprocating in a direction perpendicular to the mold opening direction. The fixed mold assembly includes a fixed module and at least two fixed mold slider assemblies disposed on one side of the fixed module. The at least two fixed mold slider assemblies are reciprocating in a direction perpendicular to the mold opening direction. When the moving mold assembly and the fixed mold assembly are closed, the moving module, the at least two moving mold slider assemblies, and the at least two fixed mold slider assemblies enclose a first injection cavity for molding a first injection molded part, and the fixed module and the at least two fixed mold slider assemblies enclose a second injection cavity for molding a second injection molded part. The fixed mold slider assemblies form an undercut in the assembly direction of the first injection molded part. The injection mold further includes a first driving component and a second driving component. The first driving component is disposed on the moving module and is used to drive the first injection molded part to move toward the second injection molded part so that the first injection molded part and the second injection molded part are assembled and connected. The second driving component is disposed on the stationary module and is used to drive the second injection molded part to move away from the stationary module so that the assembled first injection molded part and the second injection molded part are separated from the injection mold.

2. The in-mold assembly injection mold as described in claim 1, characterized in that, The first driving assembly includes a first driving member and a first push rod. One end of the first push rod passes through the moving module and is located on the side of the first injection cavity away from the second injection cavity, and the other end is driven to connect to the first driving member. The second driving assembly includes a second driving member and a second push rod. One end of the second push rod passes through the fixed module and is located on the side of the second injection cavity away from the first injection cavity, and the other end is driven to connect to the second driving member.

3. The in-mold assembly injection mold as described in claim 1, characterized in that, The injection mold further includes two fourth drive assemblies, each comprising a fourth drive member, a first connector, and a second connector. The fixed mold slider assembly and the moving mold slider assembly, located on the same side, are connected to the first connector via the second connector. In the mold opening direction, one of the fixed mold slider assembly and the moving mold slider assembly, located on the same side, is slidably connected to the second connector. The fourth drive member drives the first connector and is used to move the first connector in a direction perpendicular to the mold opening direction.

4. The in-mold assembly injection mold as described in claim 1, characterized in that, The moving mold assembly further includes a moving mold fixing plate, the moving module is fixed on the moving mold fixing plate, and at least two moving mold slider assemblies are slidably connected to the moving mold fixing plate; the fixed mold assembly further includes a fixed mold fixing plate, the fixed module is fixed on the fixed mold fixing plate, and at least two fixed mold slider assemblies are slidably connected to the fixed mold fixing plate.

5. The in-mold assembly injection mold as described in claim 4, characterized in that, The injection mold further includes a third driving assembly, which includes a third driving component disposed on the fixed mold plate and a transmission component connected to the moving mold plate. The third driving component drives the transmission component and is used to move the transmission component along the mold opening direction.

6. The in-mold assembly injection mold as described in claim 5, characterized in that, The moving mold assembly can be translated relative to the fixed mold assembly to a first mold opening position and a second mold opening position. When the moving mold assembly is in the second mold opening position, the distance between it and the fixed mold assembly is greater than the distance between it and the fixed mold assembly when it is in the first mold opening position, and is also greater than the length of the assembled first injection molded part and the second injection molded part in the mold opening direction.

7. The in-mold assembly injection mold as described in claim 1, characterized in that, The moving mold assembly further includes a first insert disposed on the moving mold assembly. One end of the first insert is inserted into the first injection cavity. The first insert extends along the mold opening direction. The first driving assembly drives the first injection molded part to move along the first insert.

8. The in-mold assembly injection mold as described in claim 7, characterized in that, The first insert is movably disposed on the moving module along the mold opening direction. A limiting part is provided at the end of the first insert away from the first injection cavity. When the first insert moves to abut against the second injection molded part, the moving module stops the limiting part.

9. The in-mold assembly injection mold as described in claim 8, characterized in that, An elastic element is provided between the limiting part and the moving module. When the first injection molded part moves toward the second injection molded part to disengage from the first insert, the elastic element is used to drive the first insert to reset.

10. The in-mold assembly injection mold as described in claim 8, characterized in that, The first injection molded part has a first connecting part, and the second injection molded part has a second connecting part that mates with the first connecting part. The moving mold assembly further includes a second insert disposed on the moving mold assembly. One end of the second insert passes through the first injection cavity and is placed inside the second injection cavity. The second insert is used to form the first connecting part and the second connecting part. The first insert is sleeved on the second insert.

11. The in-mold assembly injection mold as described in claim 1, characterized in that, The moving module is provided with a first injection channel communicating with the first injection cavity, and the stationary module is provided with a second injection channel communicating with the second injection cavity. The injection mold also includes a first injection pipe and a second injection pipe. The outlet of the first injection pipe is communicating with the first injection channel, and the outlet of the second injection pipe is communicating with the second injection channel.

12. The in-mold assembly injection mold as described in claim 11, characterized in that, The injection mold includes two sets of moving mold assemblies and two sets of fixed mold assemblies. The two fixed mold assemblies are stacked symmetrically and located between the two moving mold assemblies. The second injection cavity formed on the two fixed mold assemblies is connected through the second injection pipe.

13. The in-mold assembly injection mold as described in claim 2, characterized in that, The first drive assembly further includes a push block surrounding the circumferential edge of the first injection cavity on the side away from the second injection cavity, and the first push rod is connected to the push block.

14. An injection molding assembly method for an injection mold as described in claim 1, characterized in that, Includes the following steps: The moving mold assembly and the fixed mold assembly are driven to close, forming a first injection cavity and a second injection cavity; Injecting molding material into the first injection cavity and the second injection cavity to form a first injection molded part and a second injection molded part; The moving mold assembly and the fixed mold assembly are driven to open the mold, and the two fixed mold slider assemblies disengage from the first injection molded part; The two moving mold slider assemblies are driven to move away from each other in a direction perpendicular to the mold opening direction and disengage from the first injection molded part; the two fixed mold slider assemblies are driven away from each other in a direction perpendicular to the mold opening direction and disengage from the second injection molded part. Control the first drive component to move the first injection molded part toward the second injection molded part until the first injection molded part and the second injection molded part are assembled. The moving mold assembly is driven to move away from the fixed mold assembly to perform secondary mold opening; The first drive component is reset, and the second drive component is controlled to move the second injection molded part away from the fixed module, until the assembled first and second injection molded parts are separated from the injection mold. The second drive component is reset, the two moving mold slider components are driven to approach each other in a direction perpendicular to the mold opening direction, the two fixed mold slider components are driven to approach each other in a direction perpendicular to the mold opening direction, and the moving mold component and the fixed mold component are driven to re-close the mold.

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