Two-color injection mold molding structure and two-color injection mold

Abstract

This application provides a two-color injection mold forming structure and a two-color injection mold. The above-mentioned two-color injection mold forming structure includes two moving molds, a first-shot fixed mold, and a second-shot fixed mold. Each moving mold base is embedded with a moving mold forming core; the first-shot fixed mold includes a first fixed mold fixing seat, a first fixed mold forming core, and multiple first forming side pull mechanisms; the second-shot fixed mold includes a second fixed mold fixing seat, a second fixed mold forming core, and multiple second forming side pull mechanisms; the sealing position of the forming end of the multiple second forming side pull mechanisms is lower than the sealing position of the forming end of the multiple first forming side pull mechanisms; the first mold cavity is used for injection molding the machine body shell, the second mold cavity is used for injection molding the sealing strip, and the side of the sealing strip facing the machine body shell is injection molded with multiple anti-detachment undercut parts, each anti-detachment undercut part is engaged in a corresponding anti-detachment inner buckle hole.

Description

Technical Field

[0001] This utility model relates to the field of two-color injection mold technology, and in particular to a two-color injection mold forming structure and a two-color injection mold. Background Technology

[0002] Currently, in the mass production of drones, in order to meet the requirements of lightweight performance for each component, most components are manufactured using plastic injection molding. For example, the fuselage shell of a drone is usually assembled from multiple injection-molded fuselage shells, and sealing strips are filled at the assembly points of these multiple fuselage shells to improve the drone's waterproof and dustproof performance.

[0003] In existing technologies, to improve the manufacturing efficiency of the fuselage housing, a two-color injection mold is typically used to perform two injection molding processes on the fuselage housing and sealing strips. After two injection moldings, cooling, mold opening, and demolding, the sealing strips are directly bonded to the assembly position of the fuselage housing. A two-color injection mold refers to a mold that can inject two plastic materials on the same injection molding machine, forming them in two separate injection cavities, with the product only exiting the mold once. Currently, the two-color mold structures used in the mold industry mainly include rotary type, rotary shaft type, or their improved versions. Among them, the rotary mechanism adds a 180° rotating turntable to the moving platen of the injection molding machine, and the mold is mounted on the turntable. The rotation of the turntable achieves mold repositioning and injection. First, the moving mold and the fixed mold are closed once to injection mold the body shell. After the body shell is obtained, the body shell is covered by the moving mold. The two moving molds are rotated 180 degrees by a turntable, so that the moving mold covering the body shell is closed a second time with the other fixed mold to injection mold the sealing strip.

[0004] However, as Figure 1 The casing 1 shown has a small wall thickness or width at the assembly position, meaning that the contact area between the sealing strip 2 and the periphery at the assembly position is extremely limited. This results in insufficient bonding stability between the injection-molded casing 1 and the sealing strip 2, making the sealing strip 2 prone to loosening. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a two-color injection mold forming structure and a two-color injection mold that can improve the overall bonding stability of the body shell and the sealing strip, making it less likely for the sealing strip to loosen.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A two-color injection mold molding structure includes:

[0008] Two moving molds, each of which has a moving mold forming core embedded in it;

[0009] A single-shot mold includes a first mold fixing base, a first mold forming core, and a plurality of first forming side-pulling mechanisms; the first mold forming core is embedded in the first mold fixing base, the plurality of first forming side-pulling mechanisms are distributed along the circumference of the first mold forming core, and the plurality of first forming side-pulling mechanisms are slidably disposed on the first mold fixing base.

[0010] The two-shot mold includes a second mold fixing base, a second mold forming core, and a plurality of second forming side pulling mechanisms; the second mold forming core is embedded in the second mold fixing base, and the plurality of second forming side pulling mechanisms are distributed along the circumference of the second mold forming core, and the plurality of second forming side pulling mechanisms are slidably disposed on the second mold fixing base.

[0011] When one of the moving molds and the fixed mold is closed once, the first fixed mold core, the corresponding moving mold core, and a plurality of first molding side pull mechanisms slide inward and retract to jointly form a first mold cavity, which is used for injection molding of the machine body housing; wherein, each of the first molding side pull mechanisms has a plurality of inner buckling protrusions evenly distributed on its molding end, so that the periphery contour at the assembly position of the machine body housing after injection molding forms a plurality of anti-detachment inner buckling holes; and the sealing position of the molding end of the plurality of second molding side pull mechanisms is lower than the sealing position of the molding end of the plurality of first molding side pull mechanisms. When the moving mold and the fixed mold are closed a second time, the second fixed mold core, the moving mold core, the machine body housing, and a plurality of second molding side pull mechanisms slide inward and retract to jointly form a second mold cavity, which is used for injection molding of a sealing strip, and the sealing strip has a plurality of anti-detachment undercuts on the side facing the machine body housing, each of the anti-detachment undercuts engaging in the corresponding anti-detachment inner buckling hole.

[0012] In one embodiment, each of the first molding side-pulling mechanisms includes a first molding slider, a first inclined guide slide, and at least two first elastic reset components; the molding end of the first molding slider has a plurality of inwardly protruding protrusions evenly distributed thereon, and a first inclined guide groove is provided at one end away from the molding end of the first molding slider; the first inclined guide slide is slidably limited within the first inclined guide groove; the first inclined guide slide is also screwed to the first fixed mold fixing seat; the two elastic reset components are disposed between the first fixed mold fixing seat and the first molding slider, and the extension direction of the two elastic reset components is parallel to the extension direction of the first inclined guide groove.

[0013] In one embodiment, each of the first molding side pulling mechanisms further includes a first anti-detachment limiting hook, which is screwed to the first fixed mold fixing seat;

[0014] A first anti-detachment groove is also provided at one end away from the forming end of the first forming slider. The first anti-detachment limiting hook extends into the first anti-detachment groove. When the first forming slider is fully slidably reset by the elastic reset force of the two elastic reset components, the first anti-detachment limiting hook abuts against the bottom wall of the first anti-detachment groove.

[0015] In one embodiment, the vertical cross-section of each of the said indented protrusions is in the shape of an inverted trapezoid.

[0016] In one embodiment, each of the second molding side-pulling mechanisms includes a second molding slider, a second inclined guide slide, and at least two second elastic reset components; the sealing position of the molding end of the second molding slider is lower than the sealing position of the molding end of the first molding slider, and a second inclined guide groove is provided at one end away from the molding end of the second molding slider; the sliding limit of the second inclined guide slide is located in the second inclined guide groove; the second inclined guide slide is also screwed to the second fixed mold fixing seat; the two elastic reset components are disposed between the second fixed mold fixing seat and the second molding slider, and the extension direction of the two elastic reset components is parallel to the extension direction of the second inclined guide groove.

[0017] In one embodiment, each of the second molding side pulling mechanisms further includes a second anti-detachment limiting hook, which is screwed to the second fixed mold fixing seat;

[0018] A second anti-detachment groove is also provided at one end away from the forming end of the second forming slider. The second anti-detachment limiting hook extends into the second anti-detachment groove. When the second forming slider is fully slidably reset by the elastic reset force of the two elastic reset components, the second anti-detachment limiting hook abuts against the bottom wall of the second anti-detachment groove.

[0019] In one embodiment, each first elastic reset assembly and each second elastic reset assembly includes a guide rod and an elastic element; the elastic element is movably sleeved on the guide rod, the guide rod is screwed to the corresponding first fixed mold fixing seat or the corresponding second fixed mold fixing seat, one end of the elastic element abuts against the corresponding first molding slider or the corresponding second molding slider, and the other end of the elastic element abuts against the first fixed mold fixing seat.

[0020] In one embodiment, both the first molding slider and the second molding slider are provided with slider cooling water channels, and the shortest distance between the main cooling section of the slider cooling water channel and the first mold cavity or the second mold cavity is 15mm.

[0021] In one embodiment, a first hot runner system is embedded in the back of the first fixed mold base, the first hot runner system being used to inject adhesive into the first mold cavity; a second hot runner system is embedded in the back of the second fixed mold base, the second hot runner system being used to inject adhesive into the second mold cavity.

[0022] A two-color injection mold, comprising the two-color injection mold forming structure described in any of the above embodiments.

[0023] Compared with the prior art, the present invention has at least the following advantages:

[0024] Multiple first molding side-pulling mechanisms are slidably arranged on the first fixed mold base, and multiple second molding side-pulling mechanisms are slidably arranged on the second fixed mold base. Since each first molding side-pulling mechanism has multiple evenly distributed inner buckle protrusions at its molding end, multiple anti-detachment inner buckle holes are formed on the periphery of the injection-molded body shell assembly position. Furthermore, the sealing position of the molding ends of the multiple second molding side-pulling mechanisms is lower than the sealing position of the molding ends of the multiple first molding side-pulling mechanisms. Thus, the aforementioned two-stage mold closing of the moving mold and the second-shot fixed mold creates a second mold cavity that provides a pre-formed injection molding cavity for the sealing strip and multiple anti-detachment undercuts. Ultimately, after injection molding, each anti-detachment undercut is engaged in the corresponding anti-detachment inner buckle hole. This two-color injection mold molding structure of the present invention allows the demolded body shell and sealing strip to be connected by multiple anti-detachment undercuts, further engaging them on top of the existing adhesive bond, thereby improving the overall bonding stability and preventing the sealing strip from loosening. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the fuselage shell structure;

[0027] Figure 2 An exploded view of the fuselage casing and sealing strips;

[0028] Figure 3 for Figure 2 A magnified view of part A of the fuselage housing and sealant shown;

[0029] Figure 4 This is a schematic diagram of the two-color injection mold molding structure in one embodiment;

[0030] Figure 5 for Figure 4 The diagram shows the structural design of the two-color injection mold.

[0031] Figure 6 for Figure 4 A partial sectional view of the two-color injection mold molding structure shown;

[0032] Figure 7 A structural schematic diagram of the fuselage casing and sealant;

[0033] Figure 8 for Figure 7 A magnified view of part B of the fuselage housing and sealant shown;

[0034] Figure 9 for Figure 4 The diagram shows the structural design of the two-color injection mold.

[0035] Figure 10 for Figure 4 A partial structural diagram of the two-color injection mold forming structure is shown.

[0036] Figure 11 for Figure 10 A magnified view of part C in the two-color injection mold structure shown;

[0037] Reference numerals: 10 for two-color injection mold forming structure; 1 for machine body housing; 11 for anti-detachment inner buckle hole; 2 for sealing strip; 21 for anti-detachment undercut part; 100 for moving mold; 110 for moving mold forming core; 200 for single-shot fixed mold; 210 for first fixed mold fixing seat; 2110 for first hot runner system; 220 for first fixed mold forming core; 230 for first molding side pull mechanism; 2310 for first molding slider; 2312 for inner buckle protrusion; 231a for first inclined guide groove; 231b for first anti-detachment groove; 231c for slider cooling water channel; 2320 for first inclined guide slide; ... A first elastic reset component 2330; a guide rod 2332; an elastic element 2334; a first anti-detachment limiting hook 2340; a first mold cavity 201; a second injection fixed mold 300; a second fixed mold fixing seat 310; a second hot runner system 3110; a second fixed mold forming core 320; a second forming side pull mechanism 330; a second forming slider 3310; a second inclined guide groove 331a; a second anti-detachment groove 331b; a second inclined guide slide 3320; a second elastic reset component 3330; a second anti-detachment limiting hook 3340; and a second mold cavity 301. Detailed Implementation

[0038] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] This disclosure provides a two-color injection mold forming structure, including two moving molds, a first-shot fixed mold, and a second-shot fixed mold. Each moving mold base is embedded with a moving mold forming core; the first-shot fixed mold includes a first fixed mold base, a first fixed mold forming core, and a plurality of first forming side-pulling mechanisms; the first fixed mold forming core is embedded in the first fixed mold base, and the plurality of first forming side-pulling mechanisms are distributed circumferentially along the first fixed mold forming core, and the plurality of first forming side-pulling mechanisms are slidably disposed on the first fixed mold base; the second-shot fixed mold includes a second fixed mold base, a second fixed mold forming core, and a plurality of second forming side-pulling mechanisms; the second fixed mold forming core is embedded in the second fixed mold base, and the plurality of second forming side-pulling mechanisms are distributed circumferentially along the second fixed mold forming core, and the plurality of second forming side-pulling mechanisms are slidably disposed on the second fixed mold base;

[0042] When one of the moving molds and the fixed mold is closed once, the first fixed mold core, the corresponding moving mold core, and a plurality of first molding side pull mechanisms slide inward and retract to jointly form a first mold cavity, which is used for injection molding of the machine body housing; wherein, each of the first molding side pull mechanisms has a plurality of inner buckling protrusions evenly distributed on its molding end, so that the periphery contour at the assembly position of the machine body housing after injection molding forms a plurality of anti-detachment inner buckling holes; and the sealing position of the molding end of the plurality of second molding side pull mechanisms is lower than the sealing position of the molding end of the plurality of first molding side pull mechanisms. When the moving mold and the fixed mold are closed a second time, the second fixed mold core, the moving mold core, the machine body housing, and a plurality of second molding side pull mechanisms slide inward and retract to jointly form a second mold cavity, which is used for injection molding of a sealing strip, and the sealing strip has a plurality of anti-detachment undercuts on the side facing the machine body housing, each of the anti-detachment undercuts engaging in the corresponding anti-detachment inner buckling hole.

[0043] Please see Figures 1 to 11 To better understand the two-color injection mold molding structure 10 of this application, the following further explanation of the two-color injection mold molding structure 10 is provided:

[0044] One embodiment of the two-color injection mold forming structure 10 includes two moving molds 100, a first-shot fixed mold 200 and a second-shot fixed mold 300. Each of the moving mold 100 seats is fitted with a moving mold forming core 110; the first-shot fixed mold 200 includes a first fixed mold fixing seat 210, a first fixed mold forming core 220 and a plurality of first forming side pulling mechanisms 230; the first fixed mold forming core 220 is fitted in the first fixed mold fixing seat 210, the plurality of first forming side pulling mechanisms 230 are distributed around the first fixed mold forming core 220, and the plurality of first forming side pulling mechanisms 230 are slidably disposed on the first fixed mold fixing seat 210; the second-shot fixed mold 300 includes a second fixed mold fixing seat 310, a second fixed mold forming core 320 and a plurality of second forming side pulling mechanisms 330; the second fixed mold forming core 320 is fitted in the second fixed mold fixing seat 310, the plurality of second forming side pulling mechanisms 330 are distributed around the second fixed mold forming core 320, and the plurality of second forming side pulling mechanisms 330 are slidably disposed on the second fixed mold fixing seat 310;

[0045] When one of the moving molds 100 and the fixed mold 200 closes at once, the first fixed mold molding core 220, the corresponding moving mold molding core 110, and the plurality of first molding side pull mechanisms 230 slide inward to form a first mold cavity 201, which is used for injection molding the machine body shell 1; wherein, each of the first molding side pull mechanisms 230 has a plurality of inner buckling protrusions 2312 evenly distributed on its molding end, so that the periphery contour of the assembly position of the machine body shell 1 after injection molding forms a plurality of anti-detachment inner buckling holes 11; and the molding ends of the plurality of second molding side pull mechanisms 330 are sealed with glue. When the moving mold 100 and the two-shot fixed mold 300 are closed for the second time, the second fixed mold molding core 320, the moving mold molding core 110, the body housing 1, and the multiple second molding side pulling mechanisms 330 slide inward to form a second mold cavity 301. The second mold cavity 301 is used for injection molding of the sealing strip 2, and the sealing strip 2 has multiple anti-detachment buckle parts 21 injection molded on the side facing the body housing 1. Each anti-detachment buckle part 21 is engaged in the corresponding anti-detachment inner buckle hole 11.

[0046] In this embodiment, multiple first molding side pull mechanisms 230 are slidably arranged on the first fixed mold base 210, and multiple second molding side pull mechanisms 330 are slidably arranged on the second fixed mold base 310. Since multiple inner buckle protrusions 2312 are evenly distributed on the molding end of each first molding side pull mechanism 230, multiple anti-detachment inner buckle holes 11 are formed on the periphery contour of the assembly position of the injection-molded body shell 1. Moreover, the sealing position of the molding end of the multiple second molding side pull mechanisms 330 is lower than the sealing position of the molding end of the multiple first molding side pull mechanisms 230. In this way, the moving mold 100 and the second injection fixed mold 300 are closed twice, so that the second mold cavity 301 formed reserves the injection molding cavity for the sealing strip 2 and multiple anti-detachment undercut parts 21. Finally, after injection molding, each anti-detachment undercut part 21 is engaged in the corresponding anti-detachment inner buckle hole 11. The dual-color injection mold forming structure 10 of this utility model enables the demolded body shell 1 and sealing strip 2 to be connected by multiple anti-detachment buckles 21, which further connects the two on the basis of adhesion, thereby improving the overall adhesion stability of the two and making it less likely for the sealing strip 2 to loosen.

[0047] Specifically, in this embodiment, there are four first molding side-pulling mechanisms 230 and four second molding side-pulling mechanisms 330, with the four first molding side-pulling mechanisms 230 arranged symmetrically in pairs; similarly, the four second molding side-pulling mechanisms 330 are arranged symmetrically in pairs.

[0048] like Figure 4 , Figure 5 and Figure 9 As shown, in one embodiment, each of the first molding side-pulling mechanisms 230 includes a first molding slider 2310, a first inclined guide slide 2320, and at least two first elastic reset components 2330; the molding end of the first molding slider 2310 is evenly distributed with a plurality of the inner buckling protrusions 2312, and a first inclined guide groove 231a is provided at one end away from the molding end of the first molding slider 2310; the first inclined guide slide 2320 is slidably limited within the first inclined guide groove 231a; the first inclined guide slide 2320 is also screwed to the first fixed mold fixing seat 210; the two first elastic reset components 2330 are disposed between the first fixed mold fixing seat 210 and the first molding slider 2310, and the extension direction of the two first elastic reset components 2330 is parallel to the extension direction of the first inclined guide groove 231a.

[0049] It is understood that during the mold closing process of one moving mold 100 and one fixed mold 200, the lower end face of the first molding slider 2310 will continuously abut against the end face of the moving mold 100. Because the first inclined guide slide 2320 is limited to sliding within the first inclined guide groove 231a, the first molding slider 2310 gradually slides closer to the first fixed mold base 210 relative to the first inclined guide slide 2320 (e.g., ...). Figure 9 (As indicated by the X arrow), at this time, both ends of the first elastic reset component 2330 are continuously compressed, while the first molding slider 2310 slides and retracts towards the first fixed mold core 220 (as shown by the arrow). Figure 9 (As indicated by the Y-arrow in the middle), thus forming a first mold cavity 201 together with the first fixed mold core 220 and the moving mold core 110 of the aforementioned moving mold 100, and then the machine body shell 1 is injection molded through the first mold cavity 201. Conversely, after the machine body shell 1 is injection molded, the aforementioned moving mold 100 and the first injection fixed mold 200 open the mold. Under the action of the elastic reset force of the first elastic reset component 2330, the first molding slider 2310 gradually slides away from the first fixed mold fixing seat 210 along the extension direction of the first inclined guide groove 231a (as shown by the Y-arrow in the middle). Figure 9 (in the opposite direction of the X arrow), simultaneously causing the first fixed mold core 220 to slide away from the first fixed mold core 220 (e.g., ... Figure 9 (The opposite direction of the Y-arrow). Thus, the conversion between oblique motion and lateral motion is achieved through the first oblique guide slide 2320, wherein the lateral motion is perpendicular to the mold opening motion direction.

[0050] like Figure 5 and 9As shown, in one embodiment, each of the first molding side pull-out mechanisms 230 further includes a first anti-detachment limiting hook 2340, which is screwed to the first fixed mold fixing seat 210; a first anti-detachment groove 231b is also provided at one end away from the molding end of the first molding slider 2310, and the first anti-detachment limiting hook 2340 extends into the first anti-detachment groove 231b. When the first molding slider 2310 is fully slidably reset by the elastic reset force of the two first elastic reset components 2330, the first anti-detachment limiting hook 2340 abuts against the bottom wall of the first anti-detachment groove 231b.

[0051] It is understandable that by adding a first anti-detachment limiting hook 2340, during the sliding reset of the first molding slider 2310, that is, after the opening of the moving mold 100 and the first injection fixed mold 200, the first anti-detachment limiting hook 2340 abuts against the bottom wall of the first anti-detachment groove 231b, forming a sliding limiting effect on the first molding slider 2310, thereby ensuring that the first molding slider 2310 cannot slide off the first fixed mold fixing seat 210, so as to facilitate the mold closing action in the next cycle.

[0052] like Figure 6 , Figure 7 , Figure 8 and Figure 11 As shown, in one embodiment, the vertical cross-section of each of the inner buckle protrusions 2312 is an inverted trapezoidal shape. Thus, the anti-detachment inner buckle hole 11 obtained after injection molding is a trapezoidal hole with a wider bottom than its opening. In this way, the sealing strip 2 injection molded in the second mold cavity 301 has an anti-detachment undercut 21 injection molded on the side of the sealing strip 2 facing the housing 1, and the anti-detachment undercut 21 directly and reliably engages with the anti-detachment inner buckle hole 11, thus forming an inverted trapezoidal anti-detachment undercut 21.

[0053] like Figure 4 , Figure 6 and Figure 9As shown, in one embodiment, each of the second molding side-pulling mechanisms 330 includes a second molding slider 3310, a second inclined guide slide 3320, and at least two second elastic reset components 3330; the sealing position of the molding end of the second molding slider 3310 is lower than the sealing position of the molding end of the first molding slider 2310, and a second inclined guide groove 331a is provided at one end away from the molding end of the second molding slider 3310; the sliding limit of the second inclined guide slide 3320 is located in the second inclined guide groove 331a; the second inclined guide slide 3320 is also screwed to the second fixed mold fixing seat 310; the two second elastic reset components 3330 are disposed between the second fixed mold fixing seat 310 and the second molding slider 3310, and the extension direction of the two second elastic reset components 3330 is parallel to the extension direction of the second inclined guide groove 331a.

[0054] It is understood that after the body shell 1 is injection molded, the body shell 1 covers the moving mold core 110 of the aforementioned moving mold 100. Specifically, the two moving molds 100 are driven by the turntable of the two-color injection molding machine to rotate 180 degrees and then perform a second mold closing, that is, the moving mold 100 covering the moving mold core 110 of the body shell 1 and the two-shot fixed mold 300 are closed a second time. During the second mold closing process, the lower end face of the second molding slider 3310 will continuously abut against the end face of the moving mold 100, and because the second inclined guide slide 3320 is limited to sliding in the second inclined guide groove 331a, the second molding slider 3310 gradually slides closer to the second fixed mold fixing seat 310 relative to the second inclined guide slide 3320 (e.g., Figure 9 (As indicated by the X arrow), at this time, both ends of the second elastic reset component 3330 are continuously pressed, and at the same time, the second molding slider 3310 slides and retracts towards the second fixed mold molding core 320 (as shown by the arrow). Figure 9 (As indicated by the Y-arrow in the middle), thus forming a second mold cavity 301 together with the second fixed mold core 320 and the moving mold core 110 covering the body shell 1, and then the sealing strip 2 is injection molded through the second mold cavity 301.

[0055] In this process, since the sealing position of the molding end of the second molding slider 3310 is lower than that of the molding end of the first molding slider 2310, after the moving mold 100 of the moving mold core 110 covering the body shell 1 is closed with the two-shot fixed mold 300 for a second time, the second mold cavity 301 formed has reserved the injection molding cavity for the sealing strip 2 and multiple anti-detachment undercut parts 21. Thus, after the second mold cavity 301 is filled by injection molding, the anti-detachment undercut parts 21 obtained by cooling and molding will be directly snapped into the anti-detachment inner buckle hole 11, so that the body shell 1 and the sealing strip 2 are further reliably snapped together on the basis of bonding, thereby ensuring the stability of the bonding between the two and making it less likely for the sealing strip 2 to loosen.

[0056] like Figure 5 and Figure 9 As shown, in one embodiment, each of the second molding side pull-out mechanisms 330 further includes a second anti-detachment limiting hook 3340, which is screwed to the second fixed mold fixing seat 310; a second anti-detachment groove 331b is also provided at one end away from the molding end of the second molding slider 3310, and the second anti-detachment limiting hook 3340 extends into the second anti-detachment groove 331b. When the second molding slider 3310 is fully slidably reset by the elastic reset force of the two second elastic reset components 3330, the second anti-detachment limiting hook 3340 abuts against the bottom wall of the second anti-detachment groove 331b.

[0057] It is understandable that by adding a second anti-detachment limiting hook 3340, during the sliding reset of the second molding slider 3310, that is, after the moving mold 100 of the moving mold molding core 110 covering the body shell 1 opens with the second injection fixed mold 300, the second anti-detachment limiting hook 3340 abuts against the bottom wall of the second anti-detachment groove 331b, forming a sliding limiting effect on the second molding slider 3310, thereby ensuring that the second molding slider 3310 cannot slide off the second fixed mold fixing seat 310, so as to facilitate the mold closing action in the next cycle.

[0058] like Figure 9 As shown, in one embodiment, each first elastic reset component 2330 and each second elastic reset component 3330 includes a guide rod 2332 and an elastic element 2334; the elastic element 2334 is movably sleeved on the guide rod 2332, the guide rod 2332 is screwed to the corresponding first fixed mold fixing seat 210 or the corresponding second fixed mold fixing seat 310, one end of the elastic element 2334 abuts against the corresponding first molding slider 2310 or the corresponding second molding slider 3310, and the other end of the elastic element 2334 abuts against the first fixed mold fixing seat 210.

[0059] It can be understood that the elastic element 2334 is a spring element, that is, the spring element provides a reset driving force for the first molding slider 2310 and the second molding slider 3310 when the mold is opened; specifically, in this embodiment, the guide rod 2332 and the elastic element 2334 extend and are positioned to the clearance position of the first molding slider 2310 or the second molding slider 3310, that is, the first molding slider 2310 or the second molding slider 3310 are provided with clearance positions for limiting or positioning the guide rod 2332 and the elastic element 2334, to ensure that the elastic element 2334 has a pressure stroke during the mold closing process.

[0060] like Figure 8 , Figure 10 and Figure 11As shown, in one embodiment, both the first molding slider 2310 and the second molding slider 3310 have slider cooling water channels 231c. The shortest distance between the main cooling section of the slider cooling water channel 231c and the first mold cavity 201 or the second mold cavity 301 is 15mm. In this way, during the mold cooling stage, the slider cooling water channel 231c can effectively remove the heat from the molding ends of the first molding slider 2310 and the second molding slider 3310, thereby cooling the body housing 1, sealing strip 2, and anti-detachment undercut 21 adjacent to the anti-detachment inner buckle hole 11, thus ensuring the bonding stability between the body housing 1 and the sealing strip 2 after injection molding.

[0061] It should be noted that the layout structure of the second forming slider 3310 with the slider cooling water channel 231c is the same as that of the first forming slider 2310 with the slider cooling water channel 231c.

[0062] like Figure 9 As shown, in one embodiment, a first hot runner system 2110 is embedded in the back of the first fixed mold base 210. The first hot runner system 2110 is used to inject adhesive into the first mold cavity 201. Thus, using a hot runner system to inject adhesive into the body housing 1 is beneficial to the injection molding quality of the body housing 1 and provides a guarantee for the bonding stability of the body housing 1 and the sealing strip 2. In one embodiment, a second hot runner system 3110 is embedded in the back of the second fixed mold base 310. The second hot runner system 3110 is used to inject adhesive into the second mold cavity 301. Thus, using a hot runner system to inject adhesive into the sealing strip 2 means that the body housing 1 and the sealing strip 2 are injected with adhesive using relatively independent hot runner systems, which significantly improves the injection molding quality and production efficiency of both.

[0063] This application also provides a two-color injection mold, including the two-color injection mold forming structure described in any of the above embodiments.

[0064] Compared with the prior art, the present invention has at least the following advantages:

[0065] Multiple first molding side-pulling mechanisms are slidably arranged on the first fixed mold base, and multiple second molding side-pulling mechanisms are slidably arranged on the second fixed mold base. Since each first molding side-pulling mechanism has multiple evenly distributed inner buckle protrusions at its molding end, multiple anti-detachment inner buckle holes are formed on the periphery of the injection-molded body shell assembly position. Furthermore, the sealing position of the molding ends of the multiple second molding side-pulling mechanisms is lower than the sealing position of the molding ends of the multiple first molding side-pulling mechanisms. Thus, the aforementioned two-stage mold closing of the moving mold and the second-shot fixed mold creates a second mold cavity that provides a pre-formed injection molding cavity for the sealing strip and multiple anti-detachment undercuts. Ultimately, after injection molding, each anti-detachment undercut is engaged in the corresponding anti-detachment inner buckle hole. This two-color injection mold molding structure of the present invention allows the demolded body shell and sealing strip to be connected by multiple anti-detachment undercuts, further engaging them on top of the existing adhesive bond, thereby improving the overall bonding stability and preventing the sealing strip from loosening.

[0066] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A two-color injection mold forming structure characterized by, include: Two moving molds, each of which has a moving mold forming core embedded in it; A single-shot mold includes a first mold fixing base, a first mold forming core, and a plurality of first forming side-pulling mechanisms; the first mold forming core is embedded in the first mold fixing base, the plurality of first forming side-pulling mechanisms are distributed along the circumference of the first mold forming core, and the plurality of first forming side-pulling mechanisms are slidably disposed on the first mold fixing base. The two-shot mold includes a second mold fixing base, a second mold forming core, and a plurality of second forming side pulling mechanisms; the second mold forming core is embedded in the second mold fixing base, and the plurality of second forming side pulling mechanisms are distributed along the circumference of the second mold forming core, and the plurality of second forming side pulling mechanisms are slidably disposed on the second mold fixing base. When one of the moving molds and the fixed mold is closed once, the first fixed mold core, the corresponding moving mold core, and a plurality of first molding side pull mechanisms slide inward and retract to jointly form a first mold cavity, which is used for injection molding of the machine body housing; wherein, each of the first molding side pull mechanisms has a plurality of inner buckling protrusions evenly distributed on its molding end, so that the periphery contour at the assembly position of the machine body housing after injection molding forms a plurality of anti-detachment inner buckling holes; and the sealing position of the molding end of the plurality of second molding side pull mechanisms is lower than the sealing position of the molding end of the plurality of first molding side pull mechanisms. When the moving mold and the fixed mold are closed a second time, the second fixed mold core, the moving mold core, the machine body housing, and a plurality of second molding side pull mechanisms slide inward and retract to jointly form a second mold cavity, which is used for injection molding of a sealing strip, and the sealing strip has a plurality of anti-detachment undercuts on the side facing the machine body housing, each of the anti-detachment undercuts engaging in the corresponding anti-detachment inner buckling hole.

2. The two-color injection mold formation structure according to claim 1, characterized by Each of the first molding side-pulling mechanisms includes a first molding slider, a first inclined guide slide, and at least two first elastic reset components; the molding end of the first molding slider has a plurality of inner buckling protrusions evenly distributed thereon, and a first inclined guide groove is provided at one end away from the molding end of the first molding slider; the first inclined guide slide is slidably limited within the first inclined guide groove; the first inclined guide slide is also screwed to the first fixed mold fixing seat; the two elastic reset components are disposed between the first fixed mold fixing seat and the first molding slider, and the extension direction of the two elastic reset components is parallel to the extension direction of the first inclined guide groove.

3. The two-color injection mold formation structure according to claim 2, characterized by Each of the first molding side-pulling mechanisms further includes a first anti-detachment limiting hook, which is screwed to the first fixed mold fixing seat; A first anti-detachment groove is also provided at one end away from the forming end of the first forming slider. The first anti-detachment limiting hook extends into the first anti-detachment groove. When the first forming slider is fully slidably reset by the elastic reset force of the two elastic reset components, the first anti-detachment limiting hook abuts against the bottom wall of the first anti-detachment groove.

4. The two-shot injection mold formation structure of claim 2, wherein, Each of the aforementioned inwardly protruding sections has a vertical cross-section that is an inverted trapezoidal shape.

5. The two-shot injection mold formation structure of claim 2, wherein, Each of the second molding side-pulling mechanisms includes a second molding slider, a second inclined guide slide, and at least two second elastic reset components; the sealing position of the molding end of the second molding slider is lower than the sealing position of the molding end of the first molding slider, and a second inclined guide groove is provided at one end away from the molding end of the second molding slider; the sliding limit of the second inclined guide slide is located in the second inclined guide groove; the second inclined guide slide is also screwed to the second fixed mold fixing seat; the two elastic reset components are disposed between the second fixed mold fixing seat and the second molding slider, and the extension direction of the two elastic reset components is parallel to the extension direction of the second inclined guide groove.

6. The two-color injection mold formation structure according to claim 5, characterized by Each of the second molding side-pulling mechanisms further includes a second anti-detachment limiting hook, which is screwed to the second fixed mold fixing seat; A second anti-detachment groove is also provided at one end away from the forming end of the second forming slider. The second anti-detachment limiting hook extends into the second anti-detachment groove. When the second forming slider is fully slidably reset by the elastic reset force of the two elastic reset components, the second anti-detachment limiting hook abuts against the bottom wall of the second anti-detachment groove.

7. The two-shot injection mold formation structure of claim 5, wherein, Each first elastic reset assembly and each second elastic reset assembly includes a guide rod and an elastic element; the elastic element is movably sleeved on the guide rod, the guide rod is screwed to the corresponding first fixed mold fixing seat or the corresponding second fixed mold fixing seat, one end of the elastic element abuts against the corresponding first forming slider or the corresponding second forming slider, and the other end of the elastic element abuts against the first fixed mold fixing seat.

8. The two-shot injection mold formation structure of claim 5, wherein, Both the first molding slider and the second molding slider have slider cooling water channels, and the shortest distance between the main cooling section of the slider cooling water channel and the first mold cavity or the second mold cavity is 15mm.

9. The two-shot injection mold formation structure of claim 1, wherein, The back of the first fixed mold holder is provided with a first hot runner system, which is used to inject adhesive into the first mold cavity; the back of the second fixed mold holder is provided with a second hot runner system, which is used to inject adhesive into the second mold cavity.

10. A two-color injection mold characterized by, The two-color injection mold forming structure includes any one of claims 1-9.

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