Injection molding mold

Abstract

The injection molding mold comprises a front mold core assembly, a rear mold core assembly, a material injection assembly and an ejection assembly, and a cavity is formed after the front mold core assembly and the rear mold core assembly are closed; the front mold core assembly comprises a front mold core; the rear mold core assembly comprises a rear mold core and a movable insert; one end of the movable insert close to the cavity is connected with a first workpiece; the movable insert is movably embedded in the rear mold core and can move in the direction forming an angle with the mold closing direction; when the front mold core assembly and the rear mold core assembly are closed, the front mold core assembly drives the first workpiece to move by pushing the movable insert, so that part of the outer surface of the first workpiece is gradually attached to part of the inner wall of the cavity.

Description

Technical Field

[0001] The present invention relates to the field of injection molding technology, and in particular to an injection molding mold. Background Art

[0002] The injection molding process refers to the process of making semi-finished products of a certain shape by pressurizing, injecting, cooling, and separating molten raw materials. For injection molded parts with light-transmitting effects, the traditional process usually involves making transparent PC parts, then spraying paint, and finally laser engraving the transparent part. The entire process is time-consuming, involves many steps, and is complex. The mold used for injection molding can usually only complete part of the process of making transparent injection molded parts.

[0003] Therefore, it is necessary to provide an improved injection molding mold to shorten the process steps and improve efficiency and quality. Utility Model Content

[0004] One or more embodiments of the present specification provide an injection molding mold, comprising a front mold core assembly, a rear mold core assembly, an injection assembly and an ejection assembly, wherein the front mold core assembly and the rear mold core assembly are molded together to form a cavity; the front mold core assembly comprises a front mold core; the rear mold core assembly comprises a rear mold core and a movable insert; the movable insert is connected to a first workpiece near one end of the cavity; the movable insert is movably embedded in the rear mold core, and the movable insert can move in a direction that is angled with the mold closing direction; when the front mold core assembly and the rear mold core assembly are molded together, the front mold core assembly drives the first workpiece to move by pushing the movable insert, so that a portion of the outer surface of the first workpiece gradually fits a portion of the inner wall of the cavity.

[0005] In some embodiments, one end of the movable insert connected to the first workpiece is close to the central axis of the rear mold core, and the other end of the movable insert is far away from the central axis of the rear mold core.

[0006] In some embodiments, the angle between the moving direction of the movable insert and the mold closing direction is 3-12°.

[0007] In some embodiments, the rear mold core assembly further includes a rear mold base; the rear mold core is disposed in the rear mold base; and the end of the movable insert away from the cavity is connected to the rear mold base via an elastic member.

[0008] In some embodiments, the ejector assembly is connected to the rear mold core assembly; the ejector assembly includes at least two ejector pins that can move along the mold closing direction.

[0009] In some embodiments, the ejection assembly further includes a first return spring; the first return spring is sleeved on the ejector pin, and the first return spring abuts against the rear mold core assembly.

[0010] In some embodiments, at least one of the ejector pins can contact the movable insert, and at least one of the ejector pins can extend into the mold cavity.

[0011] In some embodiments, when the injection molding mold is closed, the rear mold core assembly also includes a positioning assembly, and the positioning assembly includes a second return spring and a locking bead; the axis of the second return spring is arranged perpendicular to the central axis of the rear mold core assembly; the locking bead is connected to the second return spring, and the locking bead can abut against the movable insert under the action of the second return spring; the movable insert is provided with at least two locking holes adapted to the locking bead, and the line connecting the centers of the at least two locking holes is parallel to the moving direction of the movable insert.

[0012] In some embodiments, the injection assembly is connected to the front mold assembly, and the injection assembly includes at least one injection hole connected to the cavity.

[0013] In some embodiments, a base is further included, and the ejection assembly is disposed on the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] This specification will be further described in the form of exemplary embodiments, which will be described in detail by the accompanying drawings. These embodiments are not restrictive, and in these embodiments, the same number represents the same structure, wherein:

[0015] Figure 1 is a schematic diagram of the structure of an injection molding mold according to some embodiments of this specification;

[0016] Figure 2 is an exploded schematic diagram of an injection molding mold according to some embodiments of the present specification;

[0017] Figure 3 is a schematic structural diagram of a rear mold core assembly according to some embodiments of this specification;

[0018] Figure 4 It is a schematic diagram of the structure of the injection molding mold before mold closing according to some embodiments of this specification;

[0019] Figure 5 yes Figure 4 A magnified schematic diagram of point A;

[0020] Figure 6 It is a schematic diagram of the structure of the injection molding mold after mold closing according to some embodiments of this specification;

[0021] Figure 7 yes Figure 6 An enlarged schematic diagram of point B;

[0022] Figure 8 It is a schematic diagram of assembling the rear mold core assembly, the ejection assembly and the base according to some embodiments of this specification;

[0023] Fig. 9 is a cross-sectional view of a rear mold core assembly, an ejection assembly, and a base according to some embodiments of the present specification;

[0024] Fig.10 yes Fig. 9 An enlarged schematic diagram of point C;

[0025] Fig.11 is a schematic diagram of the structure of a positioning assembly according to some embodiments of this specification;

[0026] Fig.12 is a schematic structural diagram of a first workpiece according to some embodiments of this specification;

[0027] Fig.13 It is a schematic diagram of the structure of the second workpiece according to some embodiments of the present specification. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the technical solutions of the embodiments of this specification, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of this specification. For ordinary technicians in this field, this specification can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0029] As shown in this specification and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "comprise" and "include" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0030] Figure 1 It is a schematic diagram of the structure of an injection molding mold according to some embodiments of the present specification. Figure 2 It is a schematic exploded view of an injection molding mold according to some embodiments of the present specification. Figure 3 It is a schematic diagram of the structure of the rear mold core assembly shown in some embodiments of the present specification. Figure 4 It is a schematic diagram of the structure of the injection molding mold before mold closing according to some embodiments of the present specification. Figure 5 yes Figure 4 An enlarged schematic diagram of point A.

[0031] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the injection molding mold 200 includes a front mold core component 210, a rear mold core component 220, an injection component 250 and an ejection component 230. The front mold core component 210 and the rear mold core component 220 are molded together to form a cavity. In some embodiments, the front mold core component 210 can be arranged above the rear mold core component 220. In some embodiments, the injection component 250 can be arranged in the front mold core component 210. In some embodiments, the ejection component 230 can be arranged below the rear mold core component 220.

[0032] In some embodiments, the front mold core component 210 can serve as the upper half of the injection molding mold 200. In some embodiments, at least a portion of the lower surface of the front mold core component 210 can form a portion of the inner surface of the cavity.

[0033] In some embodiments, the front mold assembly 210 includes a front mold 213 .

[0034] The front mold core 213 forms a part of the cavity after the injection molding mold 200 is closed. In some embodiments, at least a part of the lower surface of the front mold core 213 can form a part of the inner surface of the cavity.

[0035] In some embodiments, the front mold core assembly 210 may further include a positioning ring 211 and a front mold base 212 .

[0036] The front mold base 212 can serve as an installation base for installing the front mold core 213. In some embodiments, the front mold core 213 can be detachably connected to the front mold base 212 in a variety of ways. For example, at least one of a snap connection, a buckle connection, and a threaded connection. In some embodiments, a groove is provided on the lower surface of the front mold base 212 to match at least a portion of the outer surface of the front mold core 213, and the front mold core 213 can be installed in the groove.

[0037] The positioning ring 211 can be used to position the structure of the injection molding device outputting the injection molding material. The structure of the injection molding device outputting the injection molding material may include a nozzle, etc. In some embodiments, the positioning ring 211 can be installed in cooperation with the nozzle. In some embodiments, the positioning ring 211 is provided on the front mold base 212. In some embodiments, the positioning ring 211 and the front mold core 213 are respectively provided on opposite sides of the front mold base 212. In some embodiments, a through hole connecting the positioning ring 211 and the front mold core 213 is provided in the front mold base 212. In some embodiments, the nozzle can extend into the through hole. In some embodiments, the nozzle can be installed in cooperation with part of the through hole. In some embodiments, part of the outer surface of the nozzle is a conical surface, and part of the inner surface of the through hole is a conical surface. In some embodiments, the positioning ring 211 and the front mold base 212 can be connected in a variety of ways. For example, at least one of a snap connection, a buckle connection, a threaded connection, etc.

[0038] In some embodiments, the rear mold core component 220 can serve as the lower half of the injection molding mold 200. In some embodiments, at least a portion of the upper surface of the rear mold core component 220 can form a portion of the inner surface of the cavity.

[0039] In some embodiments, Figure 2 , Figure 3 As shown, the rear mold core assembly 220 includes a rear mold core 221 and a movable insert 223 .

[0040] After the injection molding mold 200 is closed, the rear mold core 221 forms a partial cavity. In some embodiments, at least a portion of the upper surface of the rear mold core 221 can form a partial inner surface of the cavity. In some embodiments, the rear mold core 221 is matched and docked with the front mold core 213 to form a cavity. The through hole in the front mold base 212 can be connected to the cavity. The injection molding equipment can inject the injection molding material into the cavity through the through hole in the front mold base 212.

[0041] The movable insert 223 can be used to position and install the first workpiece 260 .

[0042] In some embodiments, the first workpiece 260 can be detachably connected to the movable insert 223. In some embodiments, the movable insert 223 is connected to the first workpiece 260 at one end close to the mold cavity. In some embodiments, the movable insert 223 can be provided with at least one positioning post 2231 at one end close to the mold cavity, and the at least one positioning post 2231 can be installed and positioned in cooperation with the first workpiece 260. In some embodiments, the movable insert 223 is movably embedded in the rear mold core 221, and the movable insert 223 can be moved in a direction parallel to the mold closing direction (for example, Figure 4 The angled direction means that there is a certain angle between the moving direction of the movable insert 223 and the mold closing direction.

[0043] In some embodiments, a through slot 2211 adapted to the movable insert 223 is provided in the rear mold core 221, and the rear mold core 221 can move along the length direction of the through slot 2211. In some embodiments, a guide block 2212 is provided on at least one inner surface of the through slot 2211. The length direction of the guide block 2212 is parallel to the moving direction of the movable insert 223. A guide groove adapted to the guide block 2212 is provided on the movable insert 223. The position accuracy of the movable insert 223 during movement can be improved by the matching connection between the guide block 2212 and the guide groove, thereby ensuring the position accuracy of the first workpiece 260. In some embodiments, the guide block 2212 can be provided on the movable insert 223, and the corresponding guide groove can be provided on the inner surface of the through slot 2211.

[0044] In some embodiments, when the front mold core assembly 210 and the rear mold core assembly 220 are molded together, the front mold core assembly 210 drives the first workpiece 260 to move by pushing the movable insert 223, so that a portion of the outer surface of the first workpiece 260 gradually fits with a portion of the inner wall of the cavity. This can prevent the front mold core assembly 210 from squeezing the first workpiece 260 and scratching the high-gloss surface during the mold closing process, thereby preventing the product quality from being affected.

[0045] In some embodiments, the surface of the cavity that contacts the first workpiece 260 is an arc surface. Figure 4 The first workpiece 260 moves downward in the direction a in the mold cavity, and drives the movable insert 223 to move, and the distance between the first workpiece 260 and the mold cavity gradually decreases until the first workpiece 260 just contacts the inner surface of the mold cavity.

[0046] In some embodiments, at least one positioning groove 2131 is provided on the front mold core 213, and at least one positioning protrusion 2211 is provided on the rear mold core 221. The positioning groove 2131 is matched with the positioning protrusion 2211. Through the cooperation of the positioning groove 2131 and the positioning protrusion 2211, the positioning accuracy of the front mold core 213 and the rear mold core 221 when the mold is closed can be improved, and the shape accuracy of the cavity can be ensured.

[0047] The injection molding mold provided in some embodiments of this specification can be used to realize the injection molding of the second workpiece. In the process of mold closing, it can be avoided that the mold causes scratches and extrusion on the first workpiece, thereby affecting the product quality. By using the injection molding mold, a partially transparent surface high-gloss product connecting the first workpiece and the second workpiece can be obtained by injection molding only, eliminating additional process steps such as painting and laser engraving, simplifying the production process, and improving production efficiency.

[0048] In some embodiments, one end of the movable insert 223 connected to the first workpiece 260 is close to the central axis of the rear mold core 221 , and the other end of the movable insert 223 is far from the central axis of the rear mold core 221 .

[0049] The center axis of the rear mold core 221 refers to the axis passing through the core of the rear mold core 221. In some embodiments, the center axis of the rear mold core 221 is parallel to the mold closing direction (for example, Figure 4 The end of the movable insert 223 connected to the first workpiece 260 is close to the central axis of the rear mold core 221, and the other end of the movable insert 223 is away from the central axis of the rear mold core 221. When the front mold core 213 pushes the movable insert 223 to move downward, the movable insert 223 moves away from the central axis of the rear mold core 221 at the same time.

[0050] Before the mold is closed, the first workpiece 260 is located in the mold cavity, that is, the first workpiece 260 is lifted up by the movable insert 223 and is located in the mold cavity, and does not contact the inner surface of the mold cavity. Figure 5 and Figure 7 As shown in the direction a), the first workpiece 260 moves downward, and in the process that the movable insert 223 moves away from the central axis of the rear mold core 221 (as ... Figure 5 and Figure 7 b direction), part of the outer surface of the first workpiece 260 gradually approaches the inner surface of the cavity, that is, gradually fits with the inner wall of the front mold core, thereby ensuring that in the final product, part of the outer surface of the first workpiece 260 is the outer surface of the final product, and this part of the outer surface is not stressed or damaged, and still maintains a high-quality highlight effect.

[0051] In some embodiments, the moving direction of the movable insert 223 is aligned with the mold closing direction (eg, Figure 4 The angle between the a direction in the direction of the axis is 3-12°. For example, the angle can be 3°, 5°, 7°, 10°, 12°, etc.

[0052] Some embodiments of the present specification reasonably set the angle between the moving direction of the movable insert and the mold closing direction to limit the direction and range of movement of the first workpiece driven by the movable insert, so that the first workpiece moves according to a pre-set trajectory until part of its outer surface is completely in contact with the inner wall of the front mold core.

[0053] In some embodiments, Figure 2 As shown, the rear mold core assembly 220 may further include a rear mold base 222 , and the rear mold core 221 is disposed in the rear mold base 222 .

[0054] The rear mold base 222 can serve as an installation base for installing the rear mold core 221. In some embodiments, the rear mold core 221 can be detachably connected to the rear mold base 222 in a variety of ways. For example, at least one of a snap connection, a buckle connection, and a threaded connection. In some embodiments, a groove is provided on the lower surface of the rear mold base 222 to match at least a portion of the outer surface of the rear mold core 221, and the rear mold core 221 can be installed in the groove.

[0055] In some embodiments, at least one positioning column 2221 is provided on the rear mold base 222, and at least one positioning long hole 2121 is provided on the front mold base 212. The positioning column 2221 is matched with the positioning long hole 2121. Through the cooperation of the positioning column 2221 and the positioning long hole 2121, the positioning accuracy of the front mold base 212 and the rear mold base 222 can be improved during mold closing, thereby ensuring the shape accuracy of the cavity.

[0056] In some embodiments, at least one detachment groove 2222 is provided on the surface of the rear mold base 222 close to the front mold base 212. A gap is formed between the detachment groove 2222 and the front mold base 212. By providing the detachment groove 2222, it is convenient to apply force from the detachment groove 2222 to the front mold base 212 and the rear mold base 222, respectively, so that the front mold base 212 and the rear mold base 222 are separated.

[0057] In some embodiments, one end of the movable insert 223 away from the cavity can be connected to the rear mold base 222 through an elastic member. When the front mold core assembly 210 drives the movable insert 223 to move, the movable insert 223 can press the elastic member downward. When the front mold core assembly 210 is separated from the movable insert 223, the elastic member resets under its own elastic action, and can drive the movable insert 223 to move upward, thereby ensuring that the initial position of the first workpiece 260 is located in the cavity to avoid being scratched by the front mold core 213 when the mold is closed. In some embodiments, the elastic member may include a spring.

[0058] By using the elastic member, the movable insert can be automatically reset, thereby preventing the first workpiece 260 from being scratched, and also facilitating the next injection molding.

[0059] Figure 6 It is a schematic diagram of the structure of the injection molding mold after mold closing according to some embodiments of this specification. Figure 7 yes Figure 6 An enlarged schematic diagram of point B. Figure 8 It is a schematic diagram of the assembly of the rear mold core component, the ejection component and the base according to some embodiments of this specification. Fig. 9 It is a cross-sectional view of a rear mold core assembly, an ejection assembly and a base according to some embodiments of the present specification. Fig.10 yes Fig. 9 Enlarged schematic diagram of point C.

[0060] In some embodiments, Figure 4 , Figure 6 As shown, the ejector assembly 230 can be connected to the rear mold assembly 220.

[0061] In some embodiments, the ejector assembly 230 can apply a thrust to the second workpiece 270 after the second workpiece 270 is formed, so as to eject the second workpiece 270 from the cavity. In some embodiments, the ejector assembly 230 can apply a thrust to the front mold core assembly 210, so as to separate the front mold core assembly 210 from the rear mold core assembly 220. In some embodiments, the ejector assembly 230 can apply a thrust to the movable insert 223, so as to move the movable insert 223 along the through groove 2211.

[0062] In some embodiments, the ejector assembly 230 includes at least two ejector assemblies capable of moving in a mold closing direction (eg, Figure 4 The ejector moves in the direction a).

[0063] In some embodiments, the ejector assembly 230 further includes an ejector mounting seat 231. The ejector is mounted on the ejector mounting seat 231. In some embodiments, the ejector can be mounted on the ejector mounting seat 231 in a variety of ways. For example, at least one of a snap connection, a buckle connection, a welding connection, a threaded connection, etc. In some embodiments, the ejector and the ejector mounting seat 231 can be integrally formed. In some embodiments, the ejector mounting seat 231 can move relative to the rear mold base 222, thereby driving the ejector to move as a whole. In some embodiments, multiple ejectors can be controlled separately.

[0064] By adopting the ejection assembly, the second workpiece and the front mold core assembly can be easily separated, thereby facilitating rapid demoulding, and a thrust can also be applied to the movable insert to facilitate the resetting of the movable insert.

[0065] In some embodiments, the ejection assembly 230 further includes a first return spring 235. The first return spring 235 is sleeved on the ejector pin, and the first return spring 235 abuts against the rear mold core assembly 220.

[0066] The first return spring 235 can be used to drive the ejector to return to its original position to prevent the ejector from affecting the next injection molding. In some embodiments, one end of the first return spring 235 abuts against the rear mold core assembly 220, and the other end of the first return spring 235 abuts against the ejector mounting seat 231. When the ejector mounting seat 231 moves upward, the first return spring 235 can be squeezed. When the second workpiece 270 and the front mold core assembly 210 are separated, the ejector assembly 230 is reset under the elastic action of the first return spring 235. In some embodiments, a plurality of first return springs 235 can be provided, and the plurality of first return springs 235 can be respectively mounted on a plurality of ejectors.

[0067] Some embodiments of the present specification can facilitate automatic reset of the ejection assembly by providing a first reset spring, which is easy to use.

[0068] In some embodiments, at least one of the ejector pins can contact the movable insert 223, and at least one of the ejector pins can extend into the cavity. Figure 4 , Figure 6 , Figure 8 , Fig. 9 and Fig.10 As shown, the ejector assembly 230 includes a first ejector pin 232, a second ejector pin 233 and a third ejector pin 234. The first ejector pin 232 can pass through the rear mold base 222 and contact the movable insert 223, so as to push the movable insert 223 after the injection molding is completed. The second ejector pin 233 can pass through the rear mold base 222 and the rear mold core 221 and contact the front mold core assembly 210, so as to push the front mold core assembly 210 after the injection molding is completed. The third ejector pin 234 can pass through the rear mold base 222 and the rear mold core 221 and extend into the mold cavity, so as to contact the second workpiece 270 after the injection molding is completed, so as to push the second workpiece 270 after the injection molding is completed.

[0069] Fig.11 It is a schematic diagram of the structure of the positioning component shown in some embodiments of this specification.

[0070] In some embodiments, Figure 3 and Fig.11 As shown, the rear mold core assembly 220 also includes a positioning assembly.

[0071] The positioning assembly is used to position the movable insert 223 when the movable insert 223 moves relative to the rear mold core 221. The positioning assembly can improve the movement accuracy and control accuracy of the movable insert 223.

[0072] In some embodiments, the positioning assembly may include a second return spring 2214 and a locking bead 2215 .

[0073] The axis of the second return spring 2214 is arranged perpendicular to the central axis of the rear mold core assembly 220. The locking bead 2215 is connected to one end of the second return spring 2214. When the second return spring 2214 is in a natural state, at least part of the surface of the locking bead 2215 can extend into the through groove 2211. The locking bead 2215 can abut against the movable insert 223 under the action of the second return spring 2214.

[0074] In some embodiments, the positioning assembly may include a mounting hole 2213 .

[0075] The mounting hole 2213 is provided on the rear mold core 221, and the mounting hole 2213 is communicated with the through slot 2211. The mounting hole 2213 can be used to install the second return spring 2214. In some embodiments, two mounting holes 2213 can be provided, and the two mounting holes 2213 can be located on opposite sides of the through slot 2211 respectively.

[0076] The movable insert 223 is provided with at least two locking holes 2232 matched with the locking beads 2215. The at least two locking holes 2232 are arranged on the surface of the movable insert 223 close to the mounting hole 2213, and the line connecting the centers of the two locking holes 2232 is parallel to the moving direction of the movable insert 223. In some embodiments, the locking hole 2232 is matched with the locking beads 2215, and when the locking hole 2232 and the locking beads 2215 are matched, the second return spring 2214 is in a compressed state.

[0077] In some embodiments, when the front mold core assembly 210 drives the movable insert 223 to move downward, the locking hole 2232 on the movable insert 223 is disengaged from the locking bead 2215 until the locking hole 2232 on the upper part of the movable insert 223 cooperates with the locking bead 2215 to achieve locking. In some embodiments, when the front mold core assembly 210 is separated from the movable insert 223, under the action of the elastic member and / or the first ejector pin 232, the locking hole 2232 on the upper part of the movable insert 223 is disengaged from the locking bead 2215, and the movable insert 223 is driven to move upward until the locking hole 2232 on the lower part of the movable insert 223 cooperates with the locking bead 2215 to achieve locking.

[0078] Some embodiments of the present specification can achieve adaptive locking of the movable insert by adopting a positioning assembly, thereby improving the position accuracy and control accuracy of the movable insert.

[0079] In some embodiments, Figure 2 , Figure 4 As shown, the injection assembly 250 is connected to the front mold core assembly 210. The injection assembly 250 includes at least one injection hole connected to the mold cavity. The injection hole of the injection assembly 250 can guide the injection material to flow into the mold cavity.

[0080] In some embodiments, Figure 1 , Figure 2 As shown, the injection molding mold 200 further includes a base 240 , and the ejection assembly 230 can be disposed on the base 240 .

[0081] The base 240 can be used as a mounting base for mounting the ejector assembly 230. In some embodiments, the ejector assembly 230 can be slidably disposed in the base 240. In some embodiments, a slide groove adapted to the ejector mounting seat 231 can be disposed in the base 240. The ejector mounting seat 231 can be slidably disposed in the slide groove. In some embodiments, the rear mold core assembly 220 can be connected to the base 240 in a variety of ways. For example, at least one of a snap connection, a buckle connection, a threaded connection, etc.

[0082] The base is provided to improve the overall stability of the injection molding mold, control the sliding direction of the ejector mounting seat, and improve the accuracy and efficiency of the ejector ejecting the second workpiece and the front mold core component.

[0083] An exemplary injection molding method comprises the following steps:

[0084] injection molding a first workpiece in a first mold;

[0085] Fixing the first workpiece in the aforementioned injection molding mold;

[0086] The injection molding mold is closed to form a cavity in the injection molding mold, so that a portion of the outer surface of the first workpiece is in contact with a portion of the inner wall of the cavity;

[0087] The second workpiece is secondary injection molded in the injection molding mold so that at least a portion of the first workpiece is fixedly connected to the second workpiece.

[0088] By performing injection molding through the injection molding method, it is possible to obtain an injection molded part with a light-transmitting effect by only using the injection molding process, eliminating the process of painting and laser engraving, simplifying the production process, improving production efficiency, and obtaining a product with high consistency.

[0089] Fig.12 It is a schematic diagram of the structure of the first workpiece according to some embodiments of the present specification. Fig.13 It is a schematic diagram of the structure of the second workpiece according to some embodiments of the present specification.

[0090] The first workpiece 260 is a workpiece obtained by injection molding using a first mold. Fig.12 As shown, the shape of the first workpiece 260 can be designed as required. In some embodiments, the first workpiece 260 can be obtained by injection molding using any feasible injection molding material.

[0091] In some embodiments, the first workpiece 260 includes a transparent highlight.

[0092] Transparent high-gloss parts refer to transparent structures with no melting marks on the surface and a surface gloss that achieves a mirror effect.

[0093] In some embodiments, the material of the first workpiece 260 includes polycarbonate. By using polycarbonate for injection molding, a transparent high-gloss part can be formed. In some embodiments, the first workpiece 260 can also be made of any other feasible material.

[0094] The second workpiece 270 refers to a product formed by injection molding using the aforementioned injection molding mold 200. Fig.13 As shown, the shape of the second workpiece 270 can be designed as required. In some embodiments, the second workpiece 270 can be made of any feasible injection molding material.

[0095] In some embodiments, the second workpiece 270 includes an opaque highlight.

[0096] Opaque high-gloss parts refer to opaque structures with no melting marks on the surface and a surface gloss that achieves a mirror effect.

[0097] In some embodiments, the material of the second workpiece 270 may include ABS plastic and polycarbonate. In some embodiments, the ratio of ABS plastic to the polycarbonate is in the range of 6:4 to 8:2. In some embodiments, the ratio of ABS plastic to the polycarbonate is in the range of 6:4. In some embodiments, the ratio of ABS plastic to the polycarbonate is in the range of 7:3. In some embodiments, the ratio of ABS plastic to the polycarbonate is in the range of 8:2. By using a mixed material of ABS plastic and polycarbonate for injection molding, an opaque high-gloss part can be formed.

[0098] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of this specification. Although not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this specification. Such modifications, improvements and corrections are suggested in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this specification.

[0099] At the same time, this specification uses specific words to describe the embodiments of this specification. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of this specification. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this specification can be appropriately combined.

[0100] Similarly, it should be noted that in order to simplify the description disclosed in this specification and thus help understand one or more embodiments of the invention, in the above description of the embodiments of this specification, multiple features are sometimes combined into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the subject matter of this specification are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0101] In some embodiments, numbers describing the number of components and attributes are used. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of this specification are approximate values, in specific embodiments, the setting of such numerical values ​​is as accurate as possible within the feasible range.

[0102] Finally, it should be understood that the embodiments described in this specification are only used to illustrate the principles of the embodiments of this specification. Other variations may also fall within the scope of this specification. Therefore, as an example and not a limitation, alternative configurations of the embodiments of this specification may be considered consistent with the teachings of this specification. Accordingly, the embodiments of this specification are not limited to the embodiments explicitly introduced and described in this specification.

Claims

1. An injection molding mold, characterized in that: It includes a front mold core component, a rear mold core component, an injection component and an ejection component, wherein the front mold core component and the rear mold core component are molded together to form a cavity; The front mold core assembly includes a front mold core; The rear mold core assembly comprises a rear mold core and a movable insert; the movable insert is connected to the first workpiece near one end of the cavity; the movable insert is movably embedded in the rear mold core, and the movable insert can move in a direction that is angled with the mold closing direction; When the front mold core assembly and the rear mold core assembly are molded together, the front mold core assembly drives the first workpiece to move by pushing the movable insert, so that a portion of the outer surface of the first workpiece gradually fits with a portion of the inner wall of the cavity.

2. The injection molding die according to claim 1, characterized in that: One end of the movable insert connected to the first workpiece is close to the central axis of the rear mold core, and the other end of the movable insert is far away from the central axis of the rear mold core.

3. The injection molding die according to claim 2, characterized in that: The angle between the moving direction of the movable insert and the mold closing direction is 3-12°.

4. The injection molding die according to claim 1, characterized in that: The rear mold core assembly also includes a rear mold base; The rear mold core is arranged in the rear mold base; One end of the movable insert away from the mold cavity is connected to the rear mold base through an elastic member.

5. The injection molding die according to claim 1, wherein: The ejector assembly is connected to the rear mold core assembly; The ejector assembly includes at least two ejector pins that can move along the mold closing direction.

6. The injection molding die according to claim 5, characterized in that: The ejection assembly further includes a first return spring; the first return spring is sleeved on the ejector pin, and the first return spring abuts against the rear mold core assembly.

7. The injection molding die according to claim 6, characterized in that: At least one of the ejector pins can contact the movable insert, and at least one of the ejector pins can extend into the mold cavity.

8. The injection molding die according to claim 7, characterized in that: The rear mold core assembly further includes a positioning assembly, and the positioning assembly includes a second return spring and a locking bead; The axis of the second return spring is arranged perpendicular to the central axis of the rear mold core assembly; The locking bead is connected to the second return spring, and the locking bead can abut against the movable insert under the action of the second return spring; The movable insert is provided with at least two locking holes matched with the locking beads, and the line connecting the centers of the at least two locking holes is parallel to the moving direction of the movable insert.

9. The injection molding die according to claim 1, wherein: The injection assembly is connected to the front mold core assembly, and the injection assembly includes at least one injection hole communicated with the mold cavity.

10. The injection molding die according to claim 1, wherein: It also includes a base, and the ejection assembly is arranged on the base.

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