Injection mold

Abstract

Some embodiments of the present application provide an injection mold, comprising: a mold core, including a front mold core and a rear mold core capable of being buckled with the front mold core and located below the front mold core, the rear mold core being provided with a first through hole and a second through hole; a bearing plate located below the mold core for supporting the mold core; an insert provided on the bearing plate and capable of extending into the first through hole; an ejection assembly including an ejection rod capable of extending into the second through hole; when the mold core is supported on the bearing plate, the mold core, the insert and the ejection rod form a mold cavity for injection molding a product; the mold core is configured to be moved upward by a predetermined distance relative to the bearing plate to separate the insert from the product; the ejection rod is configured to eject the product after the front mold core is separated from the rear mold core. Without ejecting the part corresponding to the insert, the product can be damaged, and only one ejection can achieve the separation of the product, which is beneficial to the miniaturization design of the injection mold.

Description

Technical Field

[0001] Some embodiments of this application relate to the field of mold technology, and in particular to an injection mold. Background Technology

[0002] Injection molds are a type of mold widely used in the plastics industry. They mainly consist of a gating system, a guiding system, a molding system, a cooling system, and an ejection system.

[0003] For complex shapes, such as product parts with high ridges, an ejection structure needs to be added to eject the product part in a two-stage ejection process. This means that the product part is ejected once at the high ridge and then ejected as a whole in a second stage. The mold is larger, and because the bonding area of ​​the product part at the high ridge is large during ejection, the high ridge is easily damaged, which affects the injection molding quality. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, some embodiments of this application provide an injection mold to avoid damage to the product parts during demolding and to achieve a miniaturized mold design.

[0005] Some embodiments of this application provide an injection mold, including:

[0006] The mold core includes a front mold core and a rear mold core that can be engaged with the front mold core and is located below the front mold core. The rear mold core has a first through hole and a second through hole.

[0007] A support plate, located below the mold core, is used to support the mold core;

[0008] An insert is disposed on the support plate and can extend into the first through hole;

[0009] The ejection assembly includes an ejection rod that can extend into the second through hole;

[0010] When the mold core is supported on the support plate, the mold core, the insert, and the ejector rod surround and form a mold cavity for injection molding to form a product part;

[0011] The mold core is configured to move a predetermined distance relative to the support plate to disengage the insert from the product part; the ejector rod is configured to eject the product part after the front mold core separates from the rear mold core.

[0012] This injection mold, through the arrangement of the mold core, support plate, insert, and ejector assembly, forms a mold cavity when the mold core is supported by the support plate. After injection molding, the mold core moves a preset distance relative to the support plate, causing the insert to detach from the product part. Furthermore, the ejector rod can eject the product part after the front and rear mold cores separate. In this way, the separation of the insert and the product part is achieved by moving the product part relative to the insert, eliminating the need to eject the part corresponding to the insert, thus avoiding damage to the product part. Moreover, the product part can be separated in a single ejection, which is beneficial for the miniaturization design of this injection mold.

[0013] In some embodiments, the injection mold further includes a lower support plate and a vertically arranged elastic element, and the rear mold core is disposed on the lower support plate;

[0014] When the lower support plate is supported by the bearing plate under pressure, the elastic element is in a compressed state and one end abuts against the lower support plate.

[0015] By placing the rear mold core on the lower support plate, the elastic element is in a compressed state when the lower support plate is under pressure. Thus, when the lower support plate loses pressure, the elastic element drives the movement, eliminating the need for a structure to push the lower support plate, and thus saving the need for a drive structure.

[0016] In some embodiments, the ejection assembly includes an ejection plate disposed below the support plate, and the ejection rod is disposed on the ejection plate;

[0017] The other end of the elastic element abuts against the ejector plate.

[0018] In some embodiments, the injection mold further includes a base and a drive assembly, the base having a receiving cavity for receiving the ejector plate, the support plate being supported on the base, and the drive assembly being configured to drive the ejector plate upward through the base;

[0019] When the mold core is supported on the carrier plate, the ejector plate is supported on the base.

[0020] In some embodiments, the injection mold further includes an upper support plate, the front mold core is disposed on the upper support plate, and the upper support plate and the lower support plate are detachably connected.

[0021] The front mold core is set on the upper support plate. The upper and lower support plates are detachably connected to facilitate the movement of the front and rear mold cores. Thus, the front and rear mold cores can be engaged and disengaged through the upper and lower support plates.

[0022] In some embodiments, the injection mold further includes a rubber plug, which is fixedly disposed on the upper support plate, and the lower support plate is provided with a rubber plug hole for inserting the rubber plug;

[0023] When the upper support plate moves relative to the lower support plate, the rubber plug comes out through the rubber plug hole.

[0024] The rubber stopper allows for the connection between the upper and lower support plates, and also facilitates their separation, thus improving efficiency.

[0025] In some embodiments, a limiting groove is provided on the lower support plate, and a third through hole is provided on the bearing plate corresponding to the position of the limiting groove. One end of the elastic member passes through the third through hole and extends into the limiting groove.

[0026] The elastic element is positioned and limited by the limiting groove, so that the elastic element directly abuts against the lower support plate, avoiding displacement of the elastic element or tilting relative to the lower support plate. This ensures that the force of the elastic element pushes the lower support plate upward as much as possible, thereby ensuring that the distance the upper support plate moves upward is sufficient for the insert and the product to detach.

[0027] In some embodiments, the inserts are provided in multiple forms.

[0028] The use of multiple inserts allows for the injection molding of product parts with multiple ridges, while avoiding ejection at the ridges and improving the injection molding quality of the product parts.

[0029] In some embodiments, a molding cavity for forming a sheet-like structure is formed between the insert and the rear mold core.

[0030] For sheet-like structures of product parts, the mold core is moved upward relative to the insert to separate the product part from the insert, which facilitates demolding of the product part and avoids damaging the sheet-like structure by ejection.

[0031] In some embodiments, the shape of the first through hole is a rounded rectangle;

[0032] The insert has a molded portion that extends into the first through hole. The cross-sectional shape of the molded portion is a rounded rectangle, and the four corners of the molded portion have protrusions that abut against the rear mold core.

[0033] The four corners of the molding part are provided with protrusions that abut against the rear mold core. In this way, the first through hole and the molding part of the insert cooperate to form a molding cavity that can form a sheet-like structure, thereby realizing the injection molding of the sheet-like structure of the product part. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of the injection mold described in some embodiments of this application. Figure 1 ;

[0037] Figure 2 This is a partial structural schematic diagram of the injection mold described in some embodiments of this application;

[0038] Figure 3 This is a cross-sectional schematic diagram of the injection mold described in some embodiments of this application;

[0039] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0040] Figure 5 This is a schematic diagram of the structure of the product component described in some embodiments of this application. Figure 1 ;

[0041] Figure 6 This is a schematic diagram illustrating the fit between the rear mold core and the insert as described in some embodiments of this application;

[0042] Figure 7 This is a schematic diagram of the structure of the insert described in some embodiments of this application;

[0043] Figure 8 This is a cross-sectional view of the injection mold described in some embodiments of this application. Figure 2 ;

[0044] Figure 9 for Figure 8 A magnified view of a portion of point B in the middle;

[0045] Figure 10 This is a cross-sectional view of the injection mold described in some embodiments of this application. Figure 3 ;

[0046] Figure 11 This is a schematic diagram of the structure of the injection mold described in some embodiments of this application. Figure 2 .

[0047] Among them, 1 is the mold core; 11 is the front mold core; 12 is the rear mold core; 121 is the first through hole; and 122 is the second through hole.

[0048] 2. Support plate;

[0049] 3. Insert; 31. Molded part; 311. Protrusion;

[0050] 4. Ejector assembly; 41. Ejector rod; 42. Ejector plate; 43. Limiting rod;

[0051] 5. Lower support plate; 51. Limiting groove;

[0052] 6. Elastic components;

[0053] 7. Upper support plate;

[0054] 8. Rubber stopper;

[0055] 9. Base;

[0056] 10. Product component; 101. Sheet structure. Detailed Implementation

[0057] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0058] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0059] In some embodiments, such as Figures 1 to 4 As shown, this application provides an injection mold. The injection mold includes a mold core 1, which includes a front mold core 11 and a rear mold core 12 that can be engaged with the front mold core 11 and is located below the front mold core 11. The rear mold core 12 has a first through hole 121 and a second through hole 122.

[0060] In some embodiments, the injection mold further includes a support plate 2 located below the mold core 1 for supporting the mold core 1.

[0061] In some embodiments, the injection mold further includes an insert 3 disposed on the support plate 2 and capable of extending into the first through hole 121.

[0062] In some embodiments, the injection mold further includes an ejection assembly 4, which includes an ejection rod 41 capable of extending into the second through hole 122.

[0063] When the mold core 1 is supported on the support plate 2, the mold core 1, insert 3, and ejector rod 41 surround and form a mold cavity for injection molding the product part 10. The mold core 1 is configured to move upward relative to the support plate 2 by a predetermined distance so that the insert 3 disengages from the product part 10. The ejector rod 41 is configured to eject the product part 10 after the front mold core 11 separates from the rear mold core 12.

[0064] Understandably, this injection mold, through the arrangement of the mold core 1, the support plate 2, the insert 3, and the ejector assembly 4, forms a mold cavity when the mold core 1 is supported on the support plate 2. After injection molding is completed, the mold core 1 moves upward relative to the support plate 2 by a predetermined distance, causing the insert 3 to detach from the product part 10. Moreover, the ejector assembly 41 can eject the product part 10 after the front mold core 11 and the rear mold core 12 separate. In this way, the detachment of the insert 3 and the product part 10 is achieved by moving the product part 10 relative to the insert 3, without needing to eject the part of the product part 10 corresponding to the insert 3, thus avoiding damage to the product part 10. Furthermore, the detachment of the product part 10 can be achieved with only one ejection, which is beneficial for the miniaturization design of this injection mold.

[0065] It should be noted that, in specific applications, the ejector rod 41 is located at a position on the product part 10 where there is no rib, while the insert 3 is used to align with and form the rib on the product part 10. Thus, the insert 3 and the product part 10 are separated by moving the product part 10 relative to the insert 3, eliminating the need to eject the product part 10 at the rib, thereby avoiding damage to the rib of the product part 10 and preventing issues such as white marks or ejection marks.

[0066] Furthermore, the miniaturization of injection molds allows for the use of smaller injection molding machines, thereby reducing injection time, improving injection efficiency, and reducing energy consumption. In other words, miniaturization of injection molds helps reduce costs and improve injection efficiency.

[0067] In some embodiments, multiple inserts 3 are provided. The provision of multiple inserts 3 enables the injection molding of a product part 10 having multiple ridges, and avoids ejection at the ridges, thereby improving the injection molding quality of the product part 10.

[0068] For example, refer to Figure 2 The aforementioned insert 3 is provided in two parts. At this time, the rear mold core 12 is provided with two first through holes 121. The product part 10 formed at this time can be selected as a symmetrical structure.

[0069] In some embodiments, refer to Figure 5 The aforementioned product component 10 is a pull rod fixing bracket for the speaker. At this time, the speaker has a pull rod, making it easy to move.

[0070] The aforementioned insert 3 and the rear mold core 12 form a molding cavity for molding the sheet structure 101. That is to say, the sheet structure 101 for fixing the tie rod is molded here. If an ejection method is used, the sheet structure 101 is easily damaged, and the ejection of the product part 10 is relatively difficult. However, by moving the mold core 1 upward relative to the insert 3, the insert 3 can be separated from the product part 10 while avoiding damage to the sheet structure 101.

[0071] Specifically, refer to Figure 4 , Figure 6 and Figure 7 The first through hole 121 is rounded rectangular in shape. The insert 3 has a molding part 31 that extends into the first through hole 121. The molding part 31 has a rounded rectangular cross-section and has protrusions at the four corners that abut against the rear mold core 12. Thus, the rear mold core 12 and the molding part 31 form four molding cavities, thereby forming four sheet-like structures 101 at this location after injection molding.

[0072] Of course, the rib of the product part 10 formed between the insert 3 and the mold core 1 can also be other structures, such as hollow pillars, etc., which are not specifically limited here.

[0073] In some embodiments, multiple inserts 3 may be provided, that is, multiple first through holes 121 on the rear mold core 12 can be used to form multiple bone positions of the product part 10.

[0074] In some embodiments, refer to Figure 8 The injection mold also includes a lower support plate 5 and a vertically arranged elastic element 6, with the rear mold core 12 mounted on the lower support plate 5. When the lower support plate 5 is supported by the bearing plate 2, the elastic element 6 is in a compressed state and one end abuts against the lower support plate 5.

[0075] Understandably, the upward movement of the mold core 1 relative to the insert 3 is driven by the elastic element 6, eliminating the need for a structure to push the lower support plate 5 to move, thus saving the need for a driving structure. When the lower support plate 5 is under pressure and supported by the bearing plate 2, one end of the elastic element 6 abuts against the lower support plate 5 and the elastic element 6 is in a compressed state. At this time, the mold core 1, insert 3, and ejector rod 41 form a mold cavity for injection molding the product. After injection molding is completed, the pressure on the lower support plate 5 can be removed, and the elastic force of the elastic element 6 can then bounce the lower support plate 5 upward, thereby causing the mold core 1 to move upward relative to the insert 3, achieving the separation of the insert 3 from the product part 10.

[0076] In some embodiments, refer to Figure 8 Multiple elastic elements 6 are provided, and the multiple elastic elements 6 together apply force to the lower support plate 5, thereby enabling the lower support plate 5 to move stably upward relative to the bearing plate 2.

[0077] For example, four elastic elements 6 are provided, and the four elastic elements 6 are respectively located at the four corners of the lower support plate 5, so as to ensure that the lower support plate 5 is subjected to force evenly.

[0078] In some embodiments, refer to Figure 9 The lower support plate 5 is provided with a limiting groove 51, and the bearing plate 2 has a third through hole at the position corresponding to the limiting groove 51. One end of the elastic member 6 passes through the third through hole and extends into the limiting groove 51. In this way, the limiting groove 51 positions and limits the elastic member 6, so that the elastic member 6 directly abuts against the lower support plate 5, preventing the elastic member 6 from shifting or tilting relative to the lower support plate 5. This ensures that the force of the elastic member 6 pushes the lower support plate 5 upward as much as possible, thereby ensuring that the upward movement of the lower support plate 5 is sufficient for the insert 3 and the product part 10 to disengage.

[0079] In some embodiments, refer to Figure 1 and Figure 10 The injection mold also includes an upper support plate 7, and a front mold core 11 is disposed on the upper support plate 7. The upper support plate 7 and the lower support plate 5 are detachably connected.

[0080] Understandably, the front mold core 11 is mounted on the upper support plate 7, and the upper support plate 7 and the lower support plate 5 are detachably connected. Thus, the front mold core 11 and the rear mold core 12 can be engaged and disengaged through the upper support plate 7 and the lower support plate 5. That is, when the upper support plate 7 and the lower support plate 5 are connected, the front mold core 11 and the rear mold core 12 are engaged; when the upper support plate 7 and the lower support plate 5 are disengaged, the front mold core 11 and the rear mold core 12 are disengaged. At this time, the product part 10 can be ejected by the ejector rod 41.

[0081] The injection mold also includes a rubber plug 8, which is fixedly mounted on the upper support plate 7. The lower support plate 5 has a rubber plug hole for inserting the rubber plug 8. When the upper support plate 7 moves upward relative to the lower support plate 5, the rubber plug 8 is dislodged from the rubber plug hole.

[0082] Understandably, the rubber plug 8 connects the upper support plate 7 and the lower support plate 5, and also facilitates their separation, thus improving efficiency. When the rubber plug 8 is inserted into the plug hole, it connects the upper support plate 7 and the lower support plate 5, allowing them to move upwards synchronously under the action of the elastic element 6. Subsequently, when the upper support plate 7 moves upwards relative to the lower support plate 5 under force, the rubber plug 8 dislodges from the plug hole, allowing the upper support plate 7 and the lower support plate 5 to separate, thereby achieving the separation of the front mold core 11 and the rear mold core 12.

[0083] It should be noted that the movement of the upper support plate 7 is driven by a drive structure. The drive structure moves the upper support plate 7 up or down, and when the upper support plate 7 moves down, the rubber plug 8 is inserted into the rubber plug hole, causing the lower support plate 5 to abut against the bearing plate 2 and compress the elastic element 6. The drive structure can take many forms in the injection molding field, and no specific limitations are made here.

[0084] In some embodiments, refer to Figure 3 and Figure 11 The aforementioned ejection assembly includes an ejection plate 42 disposed below the support plate 2, an ejection rod 41 disposed on the ejection plate 42, and the other end of the elastic member 6 abutting against the ejection plate 42.

[0085] In other words, the ejector plate 42 is not only used to fix the ejector rod 41, but also to limit the elastic member 6. Thus, when the mold core 1 is supported on the bearing plate 2, the elastic member 6 is in a compressed state, with one end of the elastic member 6 abutting against the ejector plate 42 and the other end abutting against the lower support plate 5.

[0086] Multiple ejector rods 41 are provided to stably eject the product part 10. The number and arrangement of the ejector rods 41 are selected based on the structure of the product part 10 and are not specifically limited here. In addition, to limit the elastic element 6, the ejector plate 42 is also provided with a vertically extending limiting rod 43. The elastic element 6 is sleeved on the limiting rod. At this time, the lower support plate 5 has an insertion hole that connects to the limiting groove 51. When the lower support plate 5 abuts against the bearing plate 2 and compresses the elastic element 6, the limiting rod 43 extends into the insertion hole.

[0087] In some embodiments, refer to Figure 11 The injection mold also includes a base 9 and a drive assembly (not shown in the figure). The base 9 has a receiving cavity for accommodating the ejector plate 42. The support plate 2 is supported on the base 9. The drive assembly is configured to drive the ejector plate 42 upward through the base 9.

[0088] When the mold core 1 is supported on the support plate 2, the ejector plate 42 is supported on the base 9.

[0089] Understandably, when the mold core 1 is supported on the support plate 2, the ejector plate 42 is supported on the base 9. In this way, the elastic element 6 can be limited by the ejector plate 42 and the base 9, so that the elastic element 6 can be stably in a compressed state. When it is necessary to eject the product part 10, the drive assembly passes through the base 9 to drive the ejector plate 42 to move upward, and then drives the ejector rod 41 to move upward to eject the product part 10 from the rear mold core 12.

[0090] Among them, the driving assembly that drives the ejector plate 42 to move takes many forms in the injection molding field, and no specific limitation is made here.

[0091] For example, refer to Figures 1 to 11The injection mold includes a mold core 1, a support plate 2, an insert 3, and an ejector assembly 4. The mold core 1 includes a front mold core 11 that can be engaged with a rear mold core 12 located below the front mold core 11. The support plate 2 is located below the mold core 1 and supports the mold core 1. The insert 3 is disposed on the support plate 2 and can extend into a first through hole 121. The ejector assembly 4 includes an ejector rod 41 that can extend into a second through hole 122.

[0092] When the mold core 1 is supported on the support plate 2, the mold core 1, insert 3, and ejector rod 41 surround and form a mold cavity for injection molding the product part 10. The mold core 1 is configured to move upward relative to the support plate 2 by a predetermined distance so that the insert 3 disengages from the product part 10. The ejector rod 41 is configured to eject the product part 10 after the front mold core 11 separates from the rear mold core 12.

[0093] Among them, product component 10 is a pull rod fixing bracket for the speaker. At this time, the speaker has a pull rod, which makes it easy to move.

[0094] There are two inserts 3 as described above. At this time, there are two first through holes 121 on the rear mold core 12. The product part 10 formed at this time can be selected as a symmetrical structure.

[0095] The injection mold also includes a lower support plate 5 and vertically arranged elastic elements 6, with the rear mold core 12 mounted on the lower support plate 5. When the lower support plate 5 is supported by the bearing plate 2, the elastic element 6 is in a compressed state with one end abutting against the lower support plate 5. Multiple elastic elements 6 are provided, and these multiple elastic elements 6 collectively exert a force on the lower support plate 5.

[0096] The lower support plate 5 is provided with a limiting groove 51, and the bearing plate 2 is provided with a third through hole at the position corresponding to the limiting groove 51. One end of the elastic member 6 passes through the third through hole and extends into the limiting groove 51.

[0097] The injection mold also includes an upper support plate 7, on which the front mold core 11 is mounted. The upper support plate 7 and the lower support plate 5 are detachably connected. The injection mold also includes a rubber plug 8, which is fixedly mounted on the upper support plate 7. The lower support plate 5 has a plug hole for inserting the rubber plug 8. When the upper support plate 7 moves upward relative to the lower support plate 5, the rubber plug 8 disengages from the plug hole.

[0098] The ejector assembly 4 includes an ejector plate 42 disposed below the support plate 2, an ejector rod 41 disposed on the ejector plate 42, and the other end of the elastic member 6 abutting against the ejector plate 42. The injection mold also includes a base 9 and a drive assembly. The base 9 has a receiving cavity for accommodating the ejector plate 42. The support plate 2 is supported on the base 9, and the drive assembly is configured to drive the ejector plate 42 upward through the base 9. When the mold core 1 is supported on the support plate 2, the ejector plate 42 is supported on the base 9.

[0099] A molding cavity for molding the sheet-like structure 101 is formed between the insert 3 and the rear mold core 12. The first through hole 121 is rounded rectangular in shape. The insert 3 has a molding part 31 extending into the first through hole 121. The molding part 31 has a rounded rectangular cross-sectional shape, and the four corners of the molding part 31 have protrusions 311 that abut against the rear mold core 12.

[0100] When the injection mold needs to injection mold the product part 10, the upper support plate 7 moves down and drives the lower support plate 5 to move down until the lower support plate 5 is supported by the bearing plate 2. At this time, the rubber plug 8 on the upper support plate 7 is inserted into the rubber plug hole of the lower support plate 5, and the upper support plate 7 and the lower support plate 5 are pressed. The front mold core 11 and the rear mold core 12 are engaged. The front mold core 11, the rear mold core 12, the insert 3 and the ejector rod 41 surround and form the mold cavity of the moldable product part 10.

[0101] After injection molding is completed, the upper support plate 7 loses external pressure. At this time, the elastic force of the elastic element 6 drives the upper support plate 7 and the lower support plate 5 to move upward relative to the bearing plate 2, so that the insert 3 and the product part 10 are separated from each other. Then, the upper support plate 7 is subjected to force and moves upward relative to the lower support plate 5, so that the front mold core 11 and the rear mold core 12 are separated. Then, the drive assembly drives the ejector plate 42 to move the ejector rod 41 upward to eject the product part 10 from the rear mold core 12.

[0102] Thus, the ejector rod 41 is located at a position on the product part 10 where there is no rib, while the insert 3 is located at the rib position of the product part 10 and is used to form the rib. The insert 3 and the product part 10 are separated by moving the product part 10 relative to the insert 3, eliminating the need to eject the product part 10 at the rib position, thus avoiding damage to the rib position of the product part 10, and avoiding problems such as whitening or markings.

[0103] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0104] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An injection mold characterized in that, include: The mold core includes a front mold core and a rear mold core that can be engaged with the front mold core and is located below the front mold core. The rear mold core has a first through hole and a second through hole. A support plate, located below the mold core, is used to support the mold core; An insert is disposed on the support plate and can extend into the first through hole; The ejection assembly includes an ejection rod that can extend into the second through hole; When the mold core is supported on the support plate, the mold core, the insert, and the ejector rod surround and form a mold cavity for injection molding to form a product part; The mold core is configured to move a predetermined distance relative to the support plate to disengage the insert from the product part; the ejector rod is configured to eject the product part after the front mold core separates from the rear mold core.

2. The injection mold of claim 1, wherein The injection mold also includes a lower support plate and a vertically arranged elastic element, and the rear mold core is disposed on the lower support plate; When the lower support plate is supported by the bearing plate under pressure, the elastic element is in a compressed state and one end abuts against the lower support plate.

3. The injection mold of claim 2, wherein The ejection assembly includes an ejection plate disposed below the support plate, and the ejection rod is disposed on the ejection plate; The other end of the elastic element abuts against the ejector plate.

4. The injection mold of claim 3, wherein The injection mold further includes a base and a drive assembly. The base has a receiving cavity for accommodating the ejector plate. The support plate is supported on the base. The drive assembly is configured to drive the ejector plate upward through the base. When the mold core is supported on the carrier plate, the ejector plate is supported on the base.

5. The injection mold of claim 2, wherein The injection mold also includes an upper support plate, the front mold core is disposed on the upper support plate, and the upper support plate and the lower support plate are detachably connected.

6. The injection mold of claim 5, wherein, The injection mold also includes a rubber plug, which is fixedly mounted on the upper support plate, and the lower support plate is provided with a rubber plug hole for inserting the rubber plug; When the upper support plate moves relative to the lower support plate, the rubber plug comes out through the rubber plug hole.

7. The injection mold according to claim 2, characterized in that, The lower support plate is provided with a limiting groove, and the bearing plate is provided with a third through hole corresponding to the position of the limiting groove. One end of the elastic element passes through the third through hole and extends into the limiting groove.

8. The injection mold of claim 1, wherein, The insert is provided in multiple parts.

9. The injection mold of claim 1, wherein, A molding cavity for forming sheet-like structures is formed between the insert and the rear mold core.

10. The injection mold of claim 9, wherein, The first through hole is a rounded rectangle; The insert has a molded portion that extends into the first through hole. The cross-sectional shape of the molded portion is a rounded rectangle, and the four corners of the molded portion have protrusions that abut against the rear mold core.

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