Injection molding mold core structure and double-color injection mold

Abstract

The utility model provides an injection molding mold core structure and a double-color injection mold. The injection molding mold core structure comprises a first front mold core, a second front mold core and a rear mold core assembly. A first upper forming groove is formed in the first front mold core. A second upper forming groove is formed in the second front mold core, and the first front mold core and the second front mold core are both used for being installed on a front mold mechanism. The number of the rear mold core assemblies is two, and a lower forming groove is formed in each rear mold core assembly. The two rear mold core assemblies are both used for being installed on the rear mold mechanism, the rear mold mechanism is fixedly installed on a rotary disc of the double-colored injection molding machine, and the rear mold telescopic end of the double-colored injection molding machine drives the rear mold mechanism to move towards or away from the front mold mechanism, so that the rear mold mechanism and the front mold mechanism are subjected to mold closing or mold opening. The injection molding mold core structure can effectively ensure the assembly concentricity of the plurality of annular plastic parts, so that the plurality of annular plastic parts have relatively good assembly precision, and the relatively good aesthetic property and reliability of the electronic watch are effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection molding core structure and a two-color injection mold. Background Art

[0002] A watch is a portable timepiece that can be carried or worn by people, also known as a wristwatch. Common watches are mainly divided into mechanical watches and electronic watches. The structural components of traditional mechanical watches are mainly mechanical parts, while the structural components of current electronic watches are mostly plastic structural parts, such as watch dials, watch bands, and watch cases injection-molded from plastic raw materials, etc.

[0003] Among them, in order to ensure the aesthetic appearance of the overall electronic watch and the reliability of the assembly of each plastic component, relatively high requirements are imposed on the dimensional accuracy and position tolerance of each plastic component, such as the concentricity or coaxiality of the plastic components that make up the back cover of the plastic watch dial.

[0004] However, when general manufacturers manufacture the above-mentioned plastic components, they usually use multiple sets of injection molds to produce and manufacture the corresponding plastic components, and then manually assemble the multiple plastic components. In this way, the assembly accuracy and positional accuracy requirements of each plastic component are relatively high, and it is difficult to achieve a beautiful effect with a seamless assembly. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an injection molding core structure and a two-color injection mold that can effectively ensure that each plastic component forming the electronic watch dial has good concentricity and aesthetic appearance.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] An injection molding core structure includes

[0008] A first front core, which is formed with a first upper molding groove;

[0009] A second front core, which is formed with a second upper molding groove. Both the first front core and the second front core are used for being installed on a front mold mechanism;

[0010] A rear core assembly. The number of the rear core assemblies is two, and each rear core assembly is formed with a lower molding groove; both of the two rear core assemblies are used for being installed on a rear mold mechanism. The rear mold mechanism is fixedly installed on the turntable of a two-color injection molding machine, and the rear mold telescopic end of the two-color injection molding machine drives the rear mold mechanism to move towards or away from the front mold mechanism, so that the rear mold mechanism and the front mold mechanism are closed or opened;

[0011] When the rear mold telescopic end of the two-color injection molding machine drives the rear mold mechanism to move towards the front mold mechanism until the mold is closed, the first upper forming groove and the second upper forming groove respectively form corresponding molding cavities together with the lower forming grooves of the corresponding rear mold core assemblies; the rear mold mechanism is used to rotate with the turntable when the rear mold mechanism opens the mold;

[0012] When the rear mold mechanism rotates with the turntable to a first preset angle, the rear mold telescopic end of the two-color injection molding machine drives the rear mold mechanism to move towards the front mold mechanism until the mold is closed, and the molding cavity formed by the first upper forming groove and the corresponding lower forming groove is injection molded to form a first annular plastic part. At this time, the molding cavity formed by the first upper forming groove and the corresponding lower forming groove is in a cavity state;

[0013] When the rear mold mechanism rotates with the turntable to a second preset angle, the rear mold telescopic end of the two-color injection molding machine drives the rear mold mechanism to move towards the front mold mechanism until the mold is closed, and the molding cavity formed by the second upper forming groove and the corresponding lower forming groove is injection molded to form a second annular plastic part. The second annular plastic part is centered on the center point of the first annular plastic part and wraps around the outer peripheral wall of the first annular plastic part. At this time, the molding cavity formed by the first upper forming groove and the corresponding lower forming groove forms the first annular plastic part.

[0014] In one embodiment, a plurality of glue inlet runners are formed on the second front mold core, and one end of each glue inlet runner communicates with the molding cavity formed by the second upper forming groove and the corresponding lower forming groove, and one end of each glue inlet runner is a point gate type glue inlet.

[0015] In one embodiment, an exhaust groove is formed along the peripheral edge of the parting surface of the second annular plastic part on the second front mold core, and the maximum depth of the exhaust groove is 0.2 millimeters.

[0016] In one embodiment, the molding cavity formed by the second upper forming groove and the corresponding lower forming groove is arranged around the molding cavity formed by the first upper forming groove and the corresponding lower forming groove.

[0017] In one embodiment, the injection molding die core structure further includes a molding insert assembly, and the molding insert assembly includes a first insert, a second insert and a third insert; the first insert is sleeved on the outer peripheral wall of the second insert, the second insert is sleeved on the outer peripheral wall of the third insert, the first insert is detachably installed on the rear mold core assembly, and the molding end faces of the first insert, the second insert and the third insert extend to the lower forming groove;

[0018] The rear mold core assembly, the first insert, and the second insert are successively provided with an internal submarine gate runner, and one end of the internal submarine gate runner extends to the lower molding groove.

[0019] In one embodiment, the rear mold core assembly is provided with a slider mounting notch for mounting a lateral slider assembly, and the other end of the internal submarine gate runner communicates with the slider mounting notch.

[0020] In one embodiment, the first insert, the second insert, and the third insert are all integrally formed structures.

[0021] A two-color injection mold includes the injection molding core structure in any of the above embodiments. The injection molding core structure has a first front mold core and a second front mold core. The two-color injection mold further includes a front mold mechanism and a rear mold mechanism. The first front mold core and the second front mold core are both detachably connected to the front mold mechanism, and the two rear mold core assemblies are both detachably connected to the rear mold mechanism.

[0022] In one embodiment, the injection molding core structure has an internal submarine gate runner. The two-color injection mold further includes a lateral slider assembly. The lateral slider assembly is slidably connected to the slider mounting notch. When the slider end of the lateral slider assembly is in the closed mold state, the other end of the internal submarine gate runner communicates with the other end of the corresponding gate runner.

[0023] In one embodiment, the two-color injection mold further includes a first hot runner system and a second hot runner system. The first hot runner system and the second hot runner system are both fixedly installed on the front mold mechanism. The first hot runner system is used to inject molten rubber material into the molding cavity formed by the first upper molding groove and the corresponding lower molding groove. The second hot runner system is used to inject molten rubber material into the molding cavity formed by the second upper molding groove and the corresponding lower molding groove.

[0024] Compared with the prior art, the present utility model has at least the following advantages:

[0025] The first upper forming groove and the corresponding rear mold core assembly jointly enclose a forming cavity to injection-mold a first annular plastic part. At this time, the rear mold mechanism and the front mold mechanism are opened. Without demolding the first annular plastic part, the rear mold mechanism is directly driven by a turntable to rotate, so that the lower forming groove of the rear mold core assembly with the first annular plastic part adhered to it and the second upper forming groove jointly enclose a forming cavity to injection-mold a second annular plastic part, so that the second annular plastic part surrounds and covers the outer peripheral wall of the first annular plastic part. This injection-molding mold core structure can effectively ensure the concentricity of multiple annular plastic parts, replacing the process in traditional manufacturing that requires separate injection molding of each plastic part of the electronic watch and then manual reassembly after demolding. Thus, it effectively ensures the assembly of the above-mentioned plastic parts to the electronic watch, making the electronic watch have better aesthetics and reliability. Brief Description of the Drawings

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram of the injection-molding mold core structure in one embodiment;

[0028] Figure 2 It is an exploded structural diagram of the first annular plastic part and the second annular plastic part;

[0029] Figure 3 For Figure 1 It is a schematic structural diagram of the first front mold core and the second front mold core of the injection-molding mold core structure shown;

[0030] Figure 4 For Figure 1 It is a schematic structural diagram of the rear mold core assembly of the injection-molding mold core structure shown;

[0031] Figure 5 For Figure 1 It is a partial cross-sectional view of the injection-molding mold core structure shown;

[0032] Figure 6 For Figure 1 It is a partial structural diagram of the injection-molding mold core structure shown. Detailed Description of the Embodiments

[0033] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiments.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0036] Please refer to Figures 1 to 6 , to better understand the injection molding core structure 10 of the present application, the injection molding core structure 10 is further explained as follows:

[0037] The injection molding core structure 10 of an embodiment includes a first front core 100, a second front core 200 and a rear core assembly 300. The first front core 100 is formed with a first upper molding groove 101. The second front core 200 is formed with a second upper molding groove 201. Both the first front core 100 and the second front core 200 are used for being installed in the front mold mechanism;

[0038] The number of the rear core assemblies 300 is two. Each rear core assembly 300 is formed with a lower molding groove 301; both of the two rear core assemblies 300 are used for being installed in the rear mold mechanism. The rear mold mechanism is fixedly installed on the turntable of a two-color injection molding machine. The rear mold telescopic end of the two-color injection molding machine drives the rear mold mechanism to move towards or away from the front mold mechanism, so that the rear mold mechanism and the front mold mechanism are closed or opened;

[0039] When the telescopic end of the rear mold of the two-color injection molding machine drives the rear mold mechanism to move towards the front mold mechanism until the mold is closed, the first upper molding groove 101 and the second upper molding groove 201 respectively form corresponding molding cavities together with the lower molding groove 301 of the corresponding rear mold core assembly 300; the rear mold mechanism is used to rotate with the turntable when the rear mold mechanism opens the mold;

[0040] When the rear mold mechanism rotates with the turntable to the first preset angle, the telescopic end of the rear mold of the two-color injection molding machine drives the rear mold mechanism to move towards the front mold mechanism until the mold is closed, and the molding cavity formed by the first upper molding groove 101 and the corresponding lower molding groove 301 is injection molded to form the first annular plastic part 110. At this time, the molding cavity formed by the first upper molding groove 101 and the corresponding lower molding groove 301 is in a cavity state;

[0041] When the rear mold mechanism rotates with the turntable to the second preset angle, the telescopic end of the rear mold of the two-color injection molding machine drives the rear mold mechanism to move towards the front mold mechanism until the mold is closed, and the molding cavity formed by the second upper molding groove 201 and the corresponding lower molding groove 301 is injection molded to form the second annular plastic part 210. The second annular plastic part 210 is centered on the center point of the first annular plastic part 110 and surrounds and covers the outer peripheral wall of the first annular plastic part 110. At this time, the molding cavity formed by the first upper molding groove 101 and the corresponding lower molding groove 301 forms the first annular plastic part 110.

[0042] In this embodiment, the molding cavity formed by the first upper molding groove 101 and the corresponding rear mold core assembly 300 is injection molded to form the first annular plastic part 110. At this time, the rear mold mechanism and the front mold mechanism are opened, and there is no need to demold the first annular plastic part 110. The rear mold mechanism is directly driven by the turntable to rotate, so that the lower molding groove 301 of the rear mold core assembly 300 adhered with the first annular plastic part 110 and the second upper molding groove 201 together form a molding cavity to injection mold the second annular plastic part 210, so that the second annular plastic part 210 surrounds and covers the outer peripheral wall of the first annular plastic part 110. The injection molding mold core structure 10 can effectively ensure the concentricity of multiple annular plastic parts, replacing the process of separately injection molding each plastic part of the electronic watch in the traditional manufacturing process and then manually assembling them again after demolding, thus effectively ensuring that the above plastic parts are assembled to the electronic watch, making the electronic watch have better aesthetics and reliability.

[0043] It should be noted that, in this embodiment, the difference between the first preset angle and the second preset angle is 180°, which means that the rear mold mechanism will rotate 180° with the turntable, so that the first upper molding groove 101 and the second upper molding groove 201 can respectively form corresponding molding cavities with the lower molding groove 301 of the corresponding rear mold core assembly 300.

[0044] It should be noted that the principles of the front mold mechanism, the rear mold mechanism, the rear mold telescopic end of the two-color injection molding machine, and the drive of the turntable to rotate all belong to the prior art and will not be elaborated here in detail.

[0045] As Figure 1 , Figure 2 , Figure 4 and Figure 5 shown, in one embodiment, a plurality of glue inlet channels 202 are provided on the second front mold core 200. One end of each glue inlet channel 202 communicates with the molding cavity formed by the second upper molding groove 201 and the corresponding lower molding groove 301, and one end of each glue inlet channel 202 is a point gate type for glue inlet.

[0046] It can be understood that, in this embodiment, by providing a plurality of glue inlet channels 202 in the form of point glue inlet, it is beneficial for the second annular plastic part 210 to be quickly filled and molded and surround and cover the outer peripheral wall of the first annular plastic part 110, so that the plurality of annular plastic parts have relatively accurate positional accuracy (concentricity); at the same time, it minimizes the appearance impact of the gate mark on the second annular plastic part 210, thereby effectively improving the aesthetics of the plastic part assembled on the electronic watch.

[0047] As Figures 1 to 5 shown, in one embodiment, an exhaust groove 203 (not shown in the figure) is provided along the peripheral edge of the parting surface of the second annular plastic part 210 on the second front mold core 200, and the maximum depth of the exhaust groove 203 (not shown in the figure) is 0.2 mm. In one embodiment, the molding cavity formed by the second upper molding groove 201 and the corresponding lower molding groove 301 is arranged around the molding cavity formed by the first upper molding groove 101 and the corresponding lower molding groove 301, effectively ensuring the rationality of the molding cavity position design, thereby effectively improving the molding quality of the first annular plastic part 110 and the second annular plastic part 210 molded inside the molding cavity.

[0048] It can be understood that the reasonable arrangement of the exhaust groove 203 (not shown in the figure) also further facilitates the filling and molding of the second annular plastic part 210, thereby ensuring the molding quality of the second annular plastic part 210.

[0049] As Figures 4 to 6As shown, in one embodiment, the injection molding core structure 10 further includes a molding insert assembly 400. The molding insert assembly 400 includes a first insert 410, a second insert 420, and a third insert 430. The first insert 410 is sleeved on the outer peripheral wall of the second insert 420, and the second insert 420 is sleeved on the outer peripheral wall of the third insert 430. The first insert 410 is detachably installed on the rear core assembly 300. The molding end faces of the first insert 410, the second insert 420, and the third insert 430 extend to the lower molding groove 301. The rear core assembly 300, the first insert 410, and the second insert 420 are sequentially provided with an internal sub-gate runner 302, and one end of the internal sub-gate runner 302 extends to the lower molding groove 301.

[0050] In one embodiment, the rear core assembly 300 is provided with a slider installation notch 303 for installing a lateral slider assembly 500, and the other end of the internal sub-gate runner 302 communicates with the slider installation notch 303.

[0051] It can be understood that in this embodiment, the first insert 410, the second insert 420, and the third insert 430 facilitate improving the convenience of insert disassembly and assembly through the sleeved structure, and at the same time, it is also convenient to separately process the molding end faces of the first insert 410, the second insert 420, and the third insert 430. By providing the internal sub-gate runner 302, the gating structure of the second annular plastic part 210 is made more reasonable.

[0052] As Figure 5 shown, in one embodiment, the first insert 410, the second insert 420, and the third insert 430 are all integrally formed structures.

[0053] It can be understood that the integrally formed structure enables the first insert 410, the second insert 420, and the third insert 430 to have structural strength support.

[0054] Please refer to FIG. 1 to Figure 6 , the present application further provides a two-color injection mold, including the injection molding core structure 10 described in any of the above embodiments. The injection molding core structure 10 has a first front core 100 and a second front core 200. The two-color injection mold further includes a front mold mechanism (not shown in the figure) and a rear mold mechanism (not shown in the figure). The first front core 100 and the second front core 200 are both detachably connected to the front mold mechanism (not shown in the figure), and the two rear core assemblies 300 are both detachably connected to the rear mold mechanism (not shown in the figure).

[0055] In this embodiment, the first annular plastic component 110 is injection-molded in the molding cavity jointly formed by the first upper molding groove 101 and the corresponding rear mold core assembly 300. At this time, the rear mold mechanism (not shown in the figure) and the front mold mechanism (not shown in the figure) are opened. There is no need to demold the first annular plastic component 110. The rear mold mechanism (not shown in the figure) is directly driven by the turntable to rotate, so that the lower molding groove 301 of the rear mold core assembly 300 adhered with the first annular plastic component 110 and the second upper molding groove 201 jointly form a molding cavity to injection-mold the second annular plastic component 210, so that the second annular plastic component 210 surrounds and covers the outer peripheral wall of the first annular plastic component 110. This two-color injection mold can effectively ensure the concentricity of multiple annular plastic components, replacing the process of separately injection-molding each plastic component of the electronic watch in the traditional manufacturing process and then manually assembling them again after demolding, thus effectively ensuring that the electronic watch has good aesthetics and reliability, and at the same time effectively improving the injection-molding efficiency of multiple annular plastic components.

[0056] As Figures 4 to 5 shown, in one of the embodiments, the injection-molding mold core structure 10 has an internal sub-gating runner 302. The two-color injection mold further includes a lateral slider assembly 500. The lateral slider assembly 500 is slidably connected to the slider mounting slot 303. When the slider end of the lateral slider assembly 500 is in the closed mold state, the other end of the internal sub-gating runner 302 is communicated with the other end of the corresponding gating runner 202.

[0057] It can be understood that in this embodiment, a transfer runner groove for communicating the other end of the internal sub-gating runner 302 with the other end of one of the gating runners is provided at the slider end of the lateral slider assembly 500. The above transfer runner groove is jointly formed by the front mold core and the slider end of the lateral slider assembly 500 when the mold is closed.

[0058] As Figures 1 to 5 shown, in one of the embodiments, the two-color injection mold further includes a first hot runner system 600 and a second hot runner system 700. The first hot runner system 600 and the second hot runner system 700 are both fixedly installed on the front mold mechanism (not shown in the figure). The first hot runner system 600 is used to inject molten rubber material into the molding cavity jointly formed by the first upper molding groove 101 and the corresponding lower molding groove 301; the second hot runner system 700 is used to inject molten rubber material into the molding cavity jointly formed by the second upper molding groove 201 and the corresponding lower molding groove 301.

[0059] It can be understood that in this embodiment, by setting up a hot runner system, it is effectively ensured that the injection glue has a better filling temperature when filling the molding cavity, so that the first annular plastic part 110 and the second annular plastic part 210 after cooling and demolding have better molding quality, effectively ensuring that multiple annular plastic parts have better concentricity, and effectively ensuring that the above-mentioned plastic parts are assembled to the electronic watch, making the electronic watch have better aesthetics and reliability.

[0060] Compared with the prior art, the present utility model has at least the following advantages:

[0061] The first annular plastic part is injection molded in the molding cavity jointly formed by the first upper molding groove and the corresponding rear mold core assembly. At this time, the rear mold mechanism and the front mold mechanism are opened. Without demolding the first annular plastic part, the rear mold mechanism is directly driven by the turntable to rotate, so that the lower molding groove of the rear mold core assembly with the first annular plastic part adhered to it and the second upper molding groove jointly form a molding cavity to injection mold the second annular plastic part, so that the second annular plastic part surrounds and covers the outer peripheral wall of the first annular plastic part. This injection molding die core structure can effectively ensure the concentricity of multiple annular plastic parts, replacing the process of separately injection molding each plastic part of the electronic watch in the traditional manufacturing process and then manually assembling them again after demolding, thus effectively ensuring that the above-mentioned plastic parts are assembled to the electronic watch, making the electronic watch have better aesthetics and reliability.

[0062] The above embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. An injection molding mold core structure, characterized in that: include: A first front mold core is formed with a first upper molding groove; A second front mold core is formed with a second upper molding groove, and the first front mold core and the second front mold core are both used to be installed in the front mold mechanism; A rear mold core assembly, wherein the number of the rear mold core assemblies is two, and each of the rear mold core assemblies is formed with a lower molding groove; the two rear mold core assemblies are used to be installed in a rear mold mechanism, and the rear mold mechanism is fixedly installed on a turntable of a two-color injection molding machine, and the rear mold telescopic end of the two-color injection molding machine drives the rear mold mechanism to move toward or away from the front mold mechanism, so that the rear mold mechanism and the front mold mechanism are molded or opened; When the telescopic end of the rear mold of the two-color injection molding machine drives the rear mold mechanism to move toward the front mold mechanism until the mold is closed, the first upper molding groove and the second upper molding groove respectively form a corresponding molding cavity together with the lower molding groove of the corresponding rear mold core component; the rear mold mechanism is used to rotate with the turntable when the rear mold mechanism opens the mold; When the rear mold mechanism rotates to a first preset angle along with the turntable, the telescopic end of the rear mold of the two-color injection molding machine drives the rear mold mechanism to move toward the front mold mechanism until the molds are closed, and the molding cavity surrounded by the first upper molding groove and the corresponding lower molding groove is injection molded to form a first annular plastic component, and at this time, the molding cavity surrounded by the first upper molding groove and the corresponding lower molding groove is in a cavity state; When the rear mold mechanism rotates to the second preset angle with the turntable, the telescopic end of the rear mold of the two-color injection molding machine drives the rear mold mechanism to move toward the front mold mechanism until the mold is closed, and the molding cavity jointly surrounded by the second upper molding groove and the corresponding lower molding groove injection molds the second annular plastic component, and the second annular plastic component takes the center point of the first annular plastic component as a reference and surrounds and covers the outer peripheral wall of the first annular plastic component. At this time, the molding cavity jointly surrounded by the first upper molding groove and the corresponding lower molding groove molds the first annular plastic component.

2. The injection molding mold core structure according to claim 1, characterized in that: The second front mold core is provided with a plurality of glue inlet channels, one end of each of the glue inlet channels is connected to the molding cavity surrounded by the second upper molding groove and the corresponding lower molding groove, and one end of each of the glue inlet channels is a point gate type glue inlet.

3. The injection molding mold core structure according to claim 1, characterized in that: The second front mold core is provided with an exhaust groove along the periphery of the parting surface of the second annular plastic component, and the maximum depth of the exhaust groove is 0.2 mm.

4. The injection molding mold core structure according to claim 1, characterized in that: The molding cavity formed by the second upper molding groove and the corresponding lower molding groove is arranged around the molding cavity formed by the first upper molding groove and the corresponding lower molding groove.

5. The injection molding mold core structure according to claim 1, characterized in that: The injection molding mold core structure also includes a molding insert assembly, which includes a first insert, a second insert and a third insert; the first insert is sleeved on the outer peripheral wall of the second insert, the second insert is sleeved on the outer peripheral wall of the third insert, the first insert is detachably mounted on the rear mold core assembly, and the molding end surfaces of the first insert, the second insert and the third insert extend to the lower molding groove; The rear mold core component, the first insert and the second insert are sequentially penetrated by an inner rubber inlet flow channel, and one end of the inner rubber inlet flow channel extends to the lower molding groove.

6. The injection molding mold core structure according to claim 5, characterized in that: The rear mold core assembly is provided with a slider installation slot, and the slider installation slot is used to install a lateral slider assembly, and the other end of the inner submerged glue flow channel is connected to the slider installation slot.

7. The injection molding mold core structure according to claim 5, characterized in that: The first insert, the second insert and the third insert are all integrally formed structures.

8. A two-color injection mold, characterized in that: The invention comprises the injection molding mold core structure described in any one of claims 1 to 7, wherein the injection molding mold core structure has a first front mold core and a second front mold core, and the two-color injection mold further comprises a front mold mechanism and a rear mold mechanism, wherein the first front mold core and the second front mold core are both detachably connected to the front mold mechanism, and the two rear mold core components are both detachably connected to the rear mold mechanism.

9. The two-color injection mold according to claim 8, characterized in that: The injection molding mold core structure has an internal submerged glue inlet channel, and the two-color injection mold also includes a lateral slider assembly, which is slidably connected to the slider mounting slot. When the mold is closed, the slider end of the lateral slider assembly connects the other end of the internal submerged glue inlet channel to the other end of the corresponding glue inlet channel.

10. The two-color injection mold according to claim 8, characterized in that: The two-color injection mold also includes a first hot runner system and a second hot runner system. The first hot runner system and the second hot runner system are both fixedly installed on the front mold mechanism. The first hot runner system is used to inject molten rubber into the molding cavity jointly surrounded by the first upper molding groove and the corresponding lower molding groove; the second hot runner system is used to inject molten rubber into the molding cavity jointly surrounded by the second upper molding groove and the corresponding lower molding groove.

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