Molding mold

Abstract

This invention discloses a molding die that utilizes multiple first core heads and multiple second core heads with opening directions different from the first core heads to perform mold opening during the mold opening stage. This allows the molding die to manufacture injection molded parts with more complex structures, reducing or even eliminating machining steps and shortening the product manufacturing cycle. Furthermore, while increasing the structural complexity of the injection molded part, the waste of raw materials is correspondingly reduced. Especially when the individual product is small or the raw materials are expensive, it can significantly reduce injection molding costs and minimize material waste. Simultaneously, after the first insert is opened, the first mold body and the second mold body can be directly separated, allowing the second insert to be separated from the injection molded part as well, further simplifying the process flow.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection molding, in particular to a molding die. BACKGROUND

[0002] In the processing and manufacturing of products, usually the parts need to be further processed and trimmed by machining and other means after injection molding, so that the product can match the predetermined size and shape. The reason is that in the injection molding process, considering the influence of mold opening direction and other factors, the cavity cannot be made to completely match the finished product form of the part. Therefore, the further processing of the injection molded part increases the manufacturing cycle of the product and increases the manufacturing cost. SUMMARY

[0003] Therefore, the embodiment of the present application provides a molding die which uses first and second core pins with different mold opening directions to reduce or even avoid further processing of the injection molded part, thereby simplifying the manufacturing process.

[0004] The molding die of the embodiment of the present application comprises:

[0005] a first mold body;

[0006] a second mold body arranged opposite to the first mold body;

[0007] a plurality of first inserts and a plurality of second inserts, the first inserts comprising first core pins, the second inserts comprising second core pins, the first mold body, the second mold body, the first core pins and the second core pins being closed to form a cavity;

[0008] The plurality of first inserts are operable to move linearly relative to the cavity, and the movement direction of the first inserts is not parallel to the movement direction of the second core pins.

[0009] After the opening of each first core pin, the plurality of second core pins are opened synchronously with the first mold body.

[0010] Further, the first mold body has a plurality of channels, and the plurality of channels correspond one-to-one to the plurality of first inserts.

[0011] The first insert further comprises a guide portion, the first core pin is located at one end of the guide portion, and the guide portion is telescopically arranged in the channel, wherein the opening direction of the first core pin and the opening direction of the second core pin form an acute angle.

[0012] Further, the second insert comprises a second rod body, the second core pin is located at the end of the second rod body, and the second core pin is bent towards one side of the second mold body.

[0013] The first insert has a first guide hole, the extension direction of the first guide hole is consistent with the movement direction of the first insert, and the first insert is slidably sleeved on the second rod body through the first guide hole.

[0014] Further, the first insert includes a slide channel extending along the movement direction of the first insert.

[0015] The forming die further includes:

[0016] A plurality of stop strips corresponding to the slide channels, the stop strips are arranged in the slide channels and connected to the first die body at both ends.

[0017] Further, the slide channel penetrates the first insert in the depth direction and communicates with the first guide hole.

[0018] The stop strip includes two stop surfaces facing away from each other, and the stop surfaces face the extension direction of the slide channel.

[0019] The second insert is provided with a rectangular notch facing the side wall of the first guide hole, the rectangular notch penetrates the second insert in the extension direction of the stop strip, and the stop strip is clamped in the rectangular notch through the two stop surfaces.

[0020] Further, the channel has a stepped hole away from the cavity.

[0021] The guide portion includes an operation end, and the operation end protrudes radially from the guide portion.

[0022] The forming die includes a plurality of first elastic members, the plurality of first elastic members correspond to the plurality of stepped holes and are arranged at the large-diameter end of the stepped hole, one end of the first elastic member abuts against the operation end, and the other end abuts against the table surface of the stepped hole.

[0023] Further, the operation end has an operation surface.

[0024] The first die body includes a plurality of first side surfaces, the plurality of first side surfaces correspond to the operation surface, and the large-diameter end of the stepped hole is located on the first side surface.

[0025] The first insert is located at a clamping position, each first side surface is flush with each operation surface, the first insert is located at an opening position, and the first elastic member pushes the operation surface out of the large-diameter end of the stepped hole.

[0026] Further, the forming die further includes:

[0027] The driving part comprises a plurality of driving bodies corresponding to the plurality of first inserts, the driving bodies have driving slopes corresponding to the operation surfaces, and the driving bodies are operable to move along the movement direction of the second cores;

[0028] The first insert is located at the clamped position, and the driving slopes simultaneously abut against the operation surfaces and the first side surface.

[0029] Further, the driving part further comprises:

[0030] The driving plate is fixedly connected with the plurality of driving bodies;

[0031] The second elastic member has one end abutting against the driving plate and the other end abutting against the first mold body.

[0032] Further, the channel further has a connecting hole and a limiting ring surface, the connecting hole is in communication with the cavity and the small-diameter end of the stepped hole respectively, and the limiting ring surface extends from the connecting hole to the small-diameter end of the stepped hole;

[0033] The guiding part further comprises a first rod body, the first rod body is located between the operation end and the first core, and the first rod body has a matching surface, the matching surface extends along the radial direction of the first rod body and is adapted to the limiting ring surface.

[0034] Further, the inner wall of the cavity has a first arc surface, the first arc surface comprises a first part and a second part which can be spliced, the first part is located in the first mold body, and the second part is located in the first core;

[0035] When the matching surface abuts against the limiting ring surface, the first part and the second part are spliced with each other.

[0036] Further, the inner wall of the cavity further has a plurality of first cylindrical surfaces, each first cylindrical surface extends from the first arc surface to the central region of the cavity;

[0037] Each first cylindrical surface is located in each first core, the movement direction of the first insert is consistent with the extension direction of the first cylindrical surface, and the second part surrounds the first cylindrical surface.

[0038] The embodiment of the present application discloses a molding die, which utilizes a plurality of first core pins and a plurality of second core pins different from the first core pins in the opening direction to open the die respectively in the opening stage of the die. Thus, the molding die can manufacture an injection molded part with more complex structure, reduce or even eliminate the machining process of the injection molded part, and shorten the manufacturing cycle of the product. Furthermore, the complexity of the injection molded part structure is improved, and the loss of raw materials is also reduced. Especially when the single product form is small or the raw material is expensive, the injection molding cost can be greatly reduced, and the material waste can be reduced. Meanwhile, after the first insert is opened, the first die body and the second die body are separated directly, the second insert can be separated together with the injection molded part, and the process flow is further simplified. BRIEF DESCRIPTION OF DRAWINGS

[0039] The above and other objects, features and advantages of the present application will become more apparent from the following description when taken in conjunction with the accompanying drawings, in which:

[0040] Figure 1 is a structural schematic diagram of the molding die of the embodiment of the present application;

[0041] Figure 2 is an exploded schematic diagram of the molding die of the embodiment of the present application;

[0042] Figure 3 is an assembly schematic diagram of the first die body, the die seat and the second die body of the embodiment of the present application;

[0043] Figure 4 is a cooperation schematic diagram of the first die body and the driving body of the embodiment of the present application;

[0044] Figure 5 is a cooperation schematic diagram of the first insert, the second insert and the driving body of the embodiment of the present application;

[0045] Figure 6 is a sectional view schematic diagram of the first die body of the embodiment of the present application;

[0046] Figure 7 is a structural schematic diagram of a cavity of the embodiment of the present application;

[0047] Figure 8 is a sectional view schematic diagram of the first insert and the second insert in some embodiments of the embodiment of the present application;

[0048] Figure 9 is a sectional view schematic diagram of the first insert and the second insert in some other embodiments of the embodiment of the present application;

[0049] Figure 10 is a sectional view schematic diagram of the first insert of the embodiment of the present application;

[0050] Figure 11is a working flow schematic diagram of a forming die of an embodiment of the present application;

[0051] Figure 12 is a structural schematic diagram of an injection molded part of an embodiment of the present application;

[0052] Figure 13 is a sectional view schematic diagram of an injection molded part of an embodiment of the present application.

[0053] Legend:

[0054] 1 - first insert piece;

[0055] 11 - first core pin;

[0056] 12 - guide portion; 121 - operation end; 1211 - operation surface; 122 - first rod body; 1221 - matching surface; 1222 - first section; 1223 - second section;

[0057] 13 - first guide hole;

[0058] 14 - slide way;

[0059] 2 - second insert piece;

[0060] 21 - second core pin; 211 - avoiding area;

[0061] 22 - second rod body;

[0062] 23 - rectangular notch;

[0063] 3 - first die body;

[0064] 31 - channel; 311 - stepped hole; 3111 - large diameter end; 3112 - small diameter end; 3113 - table surface; 312 - connecting hole; 313 - limiting ring surface;

[0065] 33 - first side surface;

[0066] 34 - mounting hole;

[0067] 4 - second die body;

[0068] 5 - cavity;

[0069] 51 - first curved surface; 511 - first part; 512 - second part;

[0070] 52 - first cylindrical surface;

[0071] 6 - stop bar; 61 - stop surface;

[0072] 71 - first elastic piece; 72 - second elastic piece;

[0073] 8 - driving part; 81 - driving body; 811 - driving slope; 82 - driving plate;

[0074] 9 - die holder; 91 - guide slot;

[0075] A - injection molded part; A1 - first recess; A2 - second recess; A3 - second curved surface;

[0076] B - electric energy transceiver module. DETAILED DESCRIPTION

[0077] The present application is described in detail below based on examples, but the present application is not limited to only these examples. In the following detailed description of the present application, some specific details are described in detail. The present application can also be fully understood without the description of these details by those skilled in the art. In order to avoid confusion of the essence of the present application, well-known methods, processes, procedures, elements and circuits are not described in detail.

[0078] In addition, those of ordinary skill in the art will understand that the drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0079] In the description of the present application, it should be understood that the terms "first", "second" and the like are used only for the purpose of description and should not be understood as indicating or implying relative importance. In addition, in the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0080] Unless otherwise expressly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be interpreted broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise expressly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0081] Figure 1 is a structural schematic diagram of a forming die. Figure 2 is an exploded schematic diagram of the forming die. Figure 3 is an assembly schematic diagram of the first die body 3, the die holder 9 and the second die body 4. As shown in the figure, the first die body 3 is arranged at the center position of the die holder 9. The first die body 3 can be a die core. At the same time, an installation hole 34 is arranged at the top of the die core, and the die core is fixedly connected with the die holder 9 through the installation hole 34. Then, the second die body 4 is closed to form a partial cavity 5. Figures 1-3

[0082] Figure 4 and Figure 5 ​is a schematic view of the cooperation between the driving body 81 and the first mold body 3 and the first insert 1. In the figure, Figure 5 The arrow A and the arrow B shown in the figure represent the movement direction of the driving body 81 towards the first insert 1 and the movement direction of the driving body 81 away from the first insert 1, respectively.

[0083] Figure 6 is a schematic view of the structure of the first mold body 3. The bottom of the first mold body 3 has a recessed area with a generally bowl-shaped structure, which is used to be matched with the second mold body 4 to form part of the cavity 5. Figure 7 is a schematic view of the structure of the cavity 5. The left and right figures represent the perspective view of the cavity 5 in different directions. In the figure, the thick solid line represents the internal contour of the cavity 5. In contrast, the dotted line represents the contour of the parts adjacent to the cavity 5.

[0084] Figure 8 and Figure 9 are sectional views of the first insert 1 and the second insert 2 in different states. Figure 9 is a sectional view of the first insert 1. In the figure, Figure 8 In the figure, the first core pin 11 of the first insert 1 is close to the inside of the cavity 5. Figure 9 In the figure, the first insert 1 is located away from the center of the cavity 5.

[0085] Figure 11 is a schematic view of the working process of the molding mold. In state I, the left first insert 1 has its first core pin 11 in the cavity 5, and the right first insert 1 has its first core pin 11 withdrawn from the cavity 5 (indicated by the arrow C in the figure). In state II, after the first insert 1 is completely withdrawn from the injection molded part A, the second insert 2 and the first mold body 3 are withdrawn from the injection molded part A together.

[0086] Figure 12 and Figure 13 is an injection molded part A that can be made by the molding mold of the present embodiment. Both figures show two first recesses A1 and two second recesses A2. The first recess A1 and the second recess A2 are oriented in different directions. In the figure, the center axis of the first recess A1 is represented by the dashed line D, and the center axis of the second recess A2 is represented by the dashed line E.

[0087] In some embodiments, as Figures 1-13 shown, the molding mold of the present embodiment includes a first mold body 3, a second mold body 4, a plurality of first inserts 1, and a plurality of second inserts 2. The first mold body 3 and the second mold body 4 are arranged opposite to each other. The first insert 1 includes a first core pin 11, and the second insert 2 includes a second core pin 21. In the figure, the first mold body 3, the second mold body 4, the first core pin 11, and the second core pin 21 are matched to form a cavity 5.

[0088] Meanwhile, the plurality of first inserts 1 are configured to be linearly movable with respect to the cavity 5, and the moving direction of the first inserts 1 is configured to be non-parallel to the moving direction of the second cores 21, i.e. the two directions are offset by a certain angle. After the opening of the first cores 11, the plurality of second cores 21 are opened synchronously with the first mold body 3. The opening directions of the plurality of second cores 21 and the first mold body 3 are shown by the dotted line F and the dotted line E in Figure 13 , and the opening direction of the first cores 11 is shown by the dotted line D in Figure 13 .

[0089] It is easy to understand that the present embodiment can form regions with different orientations, different positions or different shapes on the injection molded part A by the first inserts 1 and the second inserts 2 respectively. Figure 12 and 13 show an injection molded part A made by the molding mold of the present embodiment.

[0090] wherein, Figure 13 The angle θ and the angle φ shown in are two dimensions of spherical coordinates. The injection molded part A includes a first recess A1 and a second recess A2. The radial dimension of the first recess A1 is larger than that of the second recess A2, and the depth of the first recess A1 is smaller than that of the second recess A2, while the orientations of the two recesses have an included angle (as shown by the dotted line E and the dotted line D), and the included angle of the dotted line E and the dotted line D is about 135 degrees (θ direction). The angles of the two first inserts 1 in the φ direction are 180 degrees. The first cores 11 of the present embodiment are used to form the first recess A1, and the second cores 21 are used to form the second recess A2.

[0091] Alternatively, the opening directions of the first cores 11 can be different, which can be adjusted according to the shape of the injection molded part A (including θ direction and φ direction). For example, the included angles of the opening directions of the first cores 11 and the second cores 21 are different. Including but not limited to 45 degrees, 50 degrees or 65 degrees (θ direction). For another example, the first cores 11 can be arranged at each angle (φ direction) of the circumference of the cavity 5. Figure 4 An arrangement shown in

[0092] The forming mold of the embodiment of the present application utilizes the plurality of first core pins 11 and the plurality of second core pins 21 which are different from the opening direction of the first core pins 11 to open the mold respectively in the opening stage of the mold. Thus, the mold can manufacture the injection molded part A with more complex structure, reduce or even eliminate the machining process of the injection molded part A, and shorten the manufacturing cycle of the product. Furthermore, the complexity of the structure of the injection molded part A is improved, and the loss of raw materials is also reduced. Especially when the single product form is small or the raw material is expensive, the injection molding cost can be greatly reduced, and the material waste can be reduced. At the same time, after the first insert 1 is opened, the first mold body 3 and the second mold body 4 are directly separated, the second insert 2 can be separated together with the injection molded part A, and the process flow is further simplified.

[0093] In some embodiments, as shown in Figures 1-13 , the first mold body 3 has a plurality of channels 31, and the plurality of channels 31 correspond to the plurality of first inserts 1 one by one. On the contrary, the first insert 1 also includes a guide portion 12, and the first core pin 11 is located at one end of the guide portion 12, and the guide portion 12 is telescopically arranged in the channel 31, wherein the opening direction of the first core pin 11 and the opening direction of the second core pin 21 form an acute angle.

[0094] Specifically, the opening direction of the first core pin 11 and the opening direction of the second core pin 21 form an angle of 45 degrees. Wherein the opening direction of the second core pin 21 is along the vertical direction of the bottom surface of the forming mold (as shown by the dashed line F in Figure 13 ).

[0095] The first insert 1 and the second insert 2 of the embodiment can move relative to the first mold body 3, which simplifies the structure of the forming mold. By changing the arrangement position and angle of the channel 31, the angle and depth of the first recess A1 on the injection molded part A can be adjusted.

[0096] In some embodiments, as shown in Figures 1-13 , the second insert 2 includes a second rod body 22, and the second core pin 21 is located at the end of the second rod body 22, and the second core pin 21 is bent towards one side of the second mold body 4 (θ direction). The first insert 1 has a first guide hole 13, and the extension direction of the first guide hole 13 is consistent with the movement direction of the first insert 1, and the first insert 1 is slidably sleeved on the second rod body 22 through the first guide hole 13.

[0097] The embodiment can set the first recess A1 at the top position of the second recess A2. For example, the first recess A1 is a recess, and the second recess A2 is a through hole located at the center position of the recess (see Figure 13 ). By arranging the second insert 2 into the first insert 1, a counterbore hole can be formed at the top position of the injection molded part A during the injection molding of the forming mold.

[0098] Furthermore, the second core head 21 includes a clearance area 211 located at the connection point between the second core head 21 and the second rod 22. Simultaneously, the clearance area 211 is located on the side of the second core head 21 away from the bending direction. When the first insert 1 is in the mold-closed position, and in the mold-opening direction of the second core head 21, the clearance area 211 corresponds to the first rod 122.

[0099] from Figure 11 As can be seen from the two enlarged views of state I, when the second core head 21 is withdrawn from the injection molded part A, it needs to avoid the position of the first recess A1; otherwise, it will collide with the injection molded part A, causing the first recess A1 to deform. To this end, this embodiment adjusts the insertion depth of the first core head 11 into the cavity 5 and the withdrawal angle of the first core head 11, so that the avoidance area 211 corresponds to the position of the second rod 22 near the first core head 11 (the rear side of the first core head 11), so as to ensure that after the first core head 11 is withdrawn, the top of the avoidance area 211 directly corresponds to the first mold body 3.

[0100] When the mold is opened, the first core head 11 is first pulled out, so that the area above the second core head 21 is offset from the top of the injection molded part A, thereby the second core head 21 is pulled out of the injection molded part A under the action of the first mold body 3.

[0101] Specifically, the second core head 21 is also provided with a draft angle. The draft angle, also known as the ejection angle, is an angle designed on both sides of the mold cavity to facilitate ejection. To ensure that the second core head 21 can be smoothly pulled out from the second recess A2 of the injection molded part A, the end face dimension of the second core head 21 away from the second rod body 22 is set to be smaller, while the end face dimension closer to the second rod body 22 is larger. Figure 11 The enlarged view in the figure shows a specific form where the side of the second core head 21 closest to the center of the injection molded part A is aligned with or nearly aligned with the draft direction of the second core head 21, and the aforementioned clearance area 211 is located at the top of this side. The side furthest from the center of the injection molded part A has its top sloping away from the center of the injection molded part A.

[0102] In some implementations, such as Figures 1-13 As shown, the first insert 1 includes a slide rail 14 extending along the direction of movement of the first insert 1. The molding die also includes multiple stop bars 6, which correspond one-to-one with and are adapted to each slide rail 14. The stop bars 6 pass through the slide rail 14 and are connected to the first mold body 3 at both ends. In this embodiment, the stop bars 6 can restrict the position of the first insert 1 in the direction of movement of the first insert 1.

[0103] In some implementations, such as Figures 1-13As shown, the slide 14 extends through the first insert 1 in the depth direction and communicates with the first guide hole 13. The stop bar 6 includes two stop surfaces 61 facing away from each other, and the stop surfaces 61 face the extension direction of the slide 14. The second insert 2 is provided with a rectangular notch 23 facing the sidewall of the first guide hole 13, the rectangular notch 23 extends through the second insert 2 in the extension direction of the stop bar 6, and the stop bar 6 is clamped in the rectangular notch 23 by the two stop surfaces 61. The second insert 2 of the embodiment is fixed relative to the first mold body 3 by the stop bar 6. Thus, when the first mold body 3 and the second mold body 4 are separated from each other, the second insert 2 can also be separated from the injection molded part A at the same time. The mold opening step of the molding mold is simplified. At the same time, it can also ensure that the first insert 1 can slide relative to the stop bar 6.

[0104] Further, the first mold body 3 is provided with a first window and a second window extending through the entire first mold body 3 and corresponding to the stop bar 6. The two ends of the stop bar 6 are respectively overlapped on the first window and the second window. Thus, when assembling the molding mold, the first insert 1 and the second insert 2 can be installed together and then inserted into the channel 31. Then, the rectangular notch 23 on the second rod 22, the slide 14, the first window and the second window are corresponded to each other. Then, the stop bar 6 is inserted thereinto, so as to simplify the installation process of the molding mold.

[0105] In some embodiments, as shown in Figures 1-13 As shown, the channel 31 has a stepped hole 311 away from the cavity 5. The guide portion 12 includes an operation end 121 protruding radially from the guide portion 12. Meanwhile, the molding mold includes a plurality of first elastic members 71 corresponding to the plurality of stepped holes 311 and arranged at the large-diameter end 3111 of the stepped hole 311. One end of the first elastic member 71 abuts against the operation end 121, and the other end abuts against the table surface 3113 of the stepped hole 311. The first elastic member 71 can be used to allow the first insert 1 to extend and retract in the channel 31. During the mold closing stage, the operation end 121 is pressed, so that the first insert 1 extends into the cavity 5. During the mold opening stage, the operation end 121 can be released, so that it automatically pops up.

[0106] In some embodiments, as shown in Figures 1-13As shown, the operation end 121 has an operation surface 1211. The first mold body 3 includes a plurality of first side surfaces 33, which correspond to the operation surface 1211 one by one, and the large-diameter end 3111 of the stepped hole 311 is located on the first side surface 33. Under this premise, when the first insert 1 is in the mold closing position, each first side surface 33 is flush with each operation surface 1211, and when the first insert 1 is in the mold opening position, the first elastic member 71 pushes the operation surface 1211 out of the large-diameter end 3111 of the stepped hole 311. Through the cooperation of the first elastic member 71, the operation surface 1211 and the first side surface 33, it is ensured that the first core pin 11 can be quickly adjusted in the mold closing position and the mold opening position. The injection efficiency of the molding mold is improved.

[0107] Further, the molding mold further includes a driving part 8, which includes a plurality of driving bodies 81 corresponding to the plurality of first inserts 1, the driving body 81 has a driving inclined surface 811 corresponding to the operation surface 1211, and the plurality of driving bodies 81 are operable to move along the movement direction of the second core pin 21. When the first insert 1 is in the mold closing position, the driving inclined surface 811 simultaneously abuts against the operation surface 1211 and the first side surface 33. Through the driving inclined surface 811, it is ensured that the first insert 1 will not be pressed too much into the first mold body 3, and the extension size of the first core pin 11 in the cavity 5 is ensured. Avoiding the first insert 1 from being subjected to excessive stress. Further, the driving part 8 further includes a driving plate 82 and a second elastic member 72. The driving plate 82 is simultaneously fixedly connected with the plurality of driving bodies 81. The second elastic member 72 has one end abutting against the driving plate 82 and the other end abutting against the first mold body 3.

[0108] Specifically, the top of the mold base 9 has a guide groove 91, which is directed towards the side of the mold core, and one side of the guide groove 91 is in communication with the driving plate 82, and the driving body 81 slides along the recessed area formed by the guide groove 91 and the side wall of the mold core. The recessed area can provide guidance for the sliding of the driving body 81.

[0109] Preferably, each first insert 1 is the same relative to the mold opening direction of the second core pin 21 (herein referred to as in the θ direction). By pressing down the driving plate 82, the plurality of first inserts 1 can be simultaneously moved towards the cavity 5. During the mold opening stage, the second elastic member 72 can also lift the driving plate 82, thereby driving the plurality of first core pins 11 to be synchronously withdrawn from the cavity 5.

[0110] In some embodiments, as Figures 1-13As shown, the channel 31 further has a connecting hole 312 and a limiting ring surface 313, the connecting hole 312 respectively communicates with the cavity 5 and the small-diameter end 3112 of the stepped hole 311, and the limiting ring surface 313 extends from the connecting hole 312 to the small-diameter end 3112 of the stepped hole 311. The guide part 12 further includes a first rod body 122, which is located between the operation end 121 and the first core head 11, and has a matching surface 1221 extending along the radial direction of the first rod body 122 and adapted to the limiting ring surface 313.

[0111] The embodiment further limits the distance of the first core head 11 inserted into the cavity 5 through the cooperation of the matching surface 1221 and the limiting ring surface 313, so that the depth of the first recess A1 on the injection molded part A is ensured.

[0112] Specifically, the first rod body 122 includes a first section 1222 and a second section 1223, and the matching surface 1221 is located at the connecting position of the first section 1222 and the second section 1223. The first section 1222 cooperates with the connecting hole 312, and the second section 1223 cooperates with the small-diameter end 3112 of the stepped hole 311. Thus, the movement accuracy of the first insert 1 is further increased.

[0113] In some embodiments, as shown in the drawings, Figures 1-13 As shown, the inner wall of the cavity 5 has a first arc surface 51, which includes a first part 511 and a second part 512, the first part 511 is located in the first mold body 3, and the second part 512 is located in the first core head 11. When the matching surface 1221 abuts against the limiting ring surface 313, the first part 511 and the second part 512 are spliced with each other.

[0114] It is easy to understand that the transition position of the surface of the injection molded part is affected by the shape of the mold, and defects may occur during mold opening or mold closing. Taking a 3C electronic product as an example, Figures 12-13 It is a part used on a 3C electronic product. The top thereof is a second arc surface A3, and the first recess A1 is used for accommodating a power transceiver module B. After the power transceiver module B is placed into the first recess A1, the top surface thereof needs to be smoothly transitioned with the second arc surface A3, so as to make the appearance beautiful and ensure the user experience. Therefore, the edge (such as the line segment G shown in the drawings) at the top of the first recess A1 needs to be spliced with the top edge of the power transceiver module B, and thus a higher cooperation accuracy is required. Figure 13

[0115] ​On this premise, the first curved surface 51 is split into two parts in this embodiment, that is, when the first core pin 11 is in the mold closing position, the shape of the first recess A1 and the second curved surface A3 around the first recess A1 are formed by the first core pin 11, which ensures that this position will not be deformed during mold opening. On the other hand, the forming method of the first curved surface 51 composed of the first part 511 and the second part 512 requires that the first part 511 and the second part 512 have high relative position accuracy, otherwise the second curved surface A3 formed will not be smooth enough. Therefore, the relative position relationship between the first part 511 and the second part 512 is precisely controlled by the cooperation of the cooperation surface 1221 and the limiting ring surface 313 and the cooperation of the operation surface 1211 and the first side surface 33.

[0116] In some embodiments, as shown in Figures 1-13 The inner wall of the cavity 5 also has a plurality of first cylindrical surfaces 52, each first cylindrical surface 52 extending from the first curved surface 51 to the center region of the cavity 5. Each first cylindrical surface 52 is located at each first core pin 11, and the movement direction of the first insert 1 is consistent with the extension direction of the first cylindrical surface 52, and the second part 512 surrounds the first cylindrical surface 52. The first cylindrical surface 52 of this embodiment is used to form the side wall of the first recess A1, and the extension direction of the first cylindrical surface 52 can make the first insert 1 not interfere with the body of the injection molded part A during moving away from the cavity 5.

[0117] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A forming mold characterized by, The forming die comprises: a first die body (3); a second die body (4) disposed opposite to the first die body (3); a plurality of first inserts (1) and a plurality of second inserts (2), the first insert (1) comprising a first core pin (11), the second insert (2) comprising a second core pin (21), the first die body (3), the second die body (4), the first core pin (11) and the second core pin (21) being closed to form a forming cavity (5); a plurality of the first inserts (1) are operable to move linearly relative to the forming cavity (5), the moving direction of the first insert (1) being non-parallel to the moving direction of the second core pin (21); after each of the first core pin (11) is opened, a plurality of the second core pin (21) are opened synchronously with the first die body (3); the first die body (3) has a plurality of channels (31), and a plurality of the channels (31) correspond to a plurality of the first inserts (1) one by one; the first insert (1) further comprises a guide portion (12), the first core pin (11) is located at one end of the guide portion (12), and the guide portion (12) is telescopically arranged in the channel (31); the second insert (2) comprises a second rod body (22), the second core pin (21) is located at the end of the second rod body (22), and the second core pin (21) is bent to one side of the second die body (4); the first insert (1) has a first guide hole (13), the extending direction of the first guide hole (13) is consistent with the moving direction of the first insert (1), and the first insert (1) is slidably sleeved on the second rod body (22) through the first guide hole (13).

2. The forming mold of claim 1, wherein The opening direction of the first core pin (11) and the opening direction of the second core pin (21) form an acute angle.

3. The forming mold of claim 1, wherein The first insert (1) comprises a slide way (14) extending along the moving direction of the first insert (1); the forming die further comprises: a plurality of stop bars (6) corresponding to each of the slide ways (14) and being adapted, the stop bar (6) being arranged in the slide way (14) and both ends being connected with the first die body (3).

4. The forming mold of claim 3, wherein The slide way (14) penetrates the first insert (1) in the depth direction and communicates with the first guide hole (13); the stop bar (6) comprises two stop surfaces (61) facing away from each other, the stop surface (61) facing the extending direction of the slide way (14); the second insert (2) is provided with a rectangular notch (23) facing the sidewall of the first guide hole (13), the rectangular notch (23) penetrates the second insert (2) in the extending direction of the stop bar (6), and the stop bar (6) is clamped in the rectangular notch (23) through the two stop surfaces (61).

5. The forming mold of claim 1, wherein The channel (31) has a stepped hole (311) away from the forming cavity (5); the guide portion (12) comprises an operation end (121) protruding radially to the guide portion (12). The forming die comprises a plurality of first elastic members (71), which correspond to the plurality of stepped holes (311) and are arranged at large-diameter ends (3111) of the stepped holes (311), one end of the first elastic member (71) abuts against the operation end (121), and the other end abuts against a table (3113) of the stepped hole (311).

6. The forming mold of claim 5, wherein, The operation end (121) has an operation surface (1211); The first mold body (3) comprises a plurality of first side surfaces (33), which correspond to the operation surface (1211), and the large-diameter end (3111) of the stepped hole (311) is located at the first side surface (33); The first insert (1) is located at a closed mold position, each first side surface (33) is flush with each operation surface (1211), the first insert (1) is located at an open mold position, and the first elastic member (71) pushes the operation surface (1211) out of the large-diameter end (3111) of the stepped hole (311).

7. The forming mold of claim 6, wherein The forming die further comprises: a driving part (8) comprising a plurality of driving bodies (81) corresponding to the plurality of first inserts (1), the driving body (81) has a driving inclined surface (811) corresponding to the operation surface (1211), and the plurality of driving bodies (81) are operable to move along the movement direction of the second core pin (21); The first insert (1) is located at a closed mold position, the driving inclined surface (811) abuts against the operation surface (1211) and the first side surface (33) at the same time; The driving part (8) further comprises: a driving plate (82) fixedly connected with the plurality of driving bodies (81) at the same time; a second elastic member (72) having one end abutting against the driving plate (82) and the other end abutting against the first mold body (3).

8. The forming mold of claim 7, wherein, The channel (31) further has a connecting hole (312) and a limiting ring surface (313), the connecting hole (312) respectively communicates with the cavity (5) and the small-diameter end (3112) of the stepped hole (311), and the limiting ring surface (313) extends from the connecting hole (312) to the small-diameter end (3112) of the stepped hole (311); The guide part (12) further comprises a first rod body (122), which is located between the operation end (121) and the first core pin (11), and has a matching surface (1221) extending along the radial direction of the first rod body (122) and adapted to the limiting ring surface (313); An inner wall of the cavity (5) has a first arc surface (51), which comprises a first part (511) and a second part (512) that can be spliced, the first part (511) is located at the first mold body (3), and the second part (512) is located at the first core pin (11); When the matching surface (1221) abuts against the limiting ring surface (313), the first part (511) and the second part (512) are spliced with each other.

9. The forming mold of claim 8, wherein, The inner wall of the cavity (5) further has a plurality of first cylindrical surfaces (52), each of which extends from the first arc surface (51) to the central region of the cavity (5); Each of the first cylindrical surfaces (52) is located at each of the first cores (11), and the movement direction of the first insert (1) is consistent with the extension direction of the first cylindrical surfaces (52), and the second part (512) surrounds the first cylindrical surfaces (52).

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