Injection mold

Abstract

The utility model relates to the field of mold injection molding, in particular to an injection mold which comprises a forming cavity, a demolding mechanism and a driving mechanism, and the forming cavity is used for injection molding of a product; the demolding mechanism comprises a first demolding assembly and a second demolding assembly, the first demolding assembly comprises a first sliding block and a second sliding block, the second demolding assembly comprises a third sliding block and a fourth sliding block, the first sliding block and the second sliding block abut against each other to form a limiting groove, and the third sliding block and the fourth sliding block abut against each other to form an inverted protrusion. The bulge is used for forming an inverted buckling structure on the plastic part; a limiting hole is formed in the abutting position of the third sliding block and the fourth sliding block, and the limiting groove and the limiting hole are matched to fix the plastic part. The driving mechanism comprises a first driving module and a second driving module, the first driving module is used for driving the first demolding assembly to move, and the second driving module is used for driving the protrusions in the second demolding assembly to move out of the inverted buckle structure. Smooth demolding of the product is achieved through the demolding mechanism, and the yield of the product is increased.

Description

Technical Field

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

[0002] Injection molding is a plastic molding process. Injection molding involves heating thermoplastic plastic materials to a molten state, and then injecting the molten plastic material into the injection mold. The injection mold is a tool for producing plastic products and also a tool for giving plastic products a complete structure and precise size. Usually, there is a specific shape in the injection mold. After the thermoplastic plastic material cools and solidifies, the injection mold is opened, and the plastic part is pushed out of the injection mold through a ejector pin or other demolding mechanism to obtain a product of the desired shape. Injection molding is an efficient method for mass production of complex-shaped plastic parts, and is widely used in many industries such as automobiles, consumer electronics, medical, and packaging.

[0003] In the related art, in order to meet the functional requirements of the product, many products are provided with undercut shapes. The undercut refers to a surface that is concave inward or inclined downward in the direction of the product being demolded from the injection mold. The undercut-shaped part of the product is easily covered or surrounded by the injection mold, making it difficult to separate the product directly from the injection mold during the molding process, resulting in frequent deformation or breakage of the product structure during the demolding process, causing the product to be scrapped and reducing the product yield rate. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides an injection mold, which realizes smooth demoulding of the product through the cooperation of a demoulding mechanism and a driving mechanism, avoids damage or tearing caused by demoulding of the product, and improves the yield rate of the product.

[0005] In a first aspect, an embodiment of the present application provides an injection mold, comprising:

[0006] Molding cavity, used for injection molding of products;

[0007] A demoulding mechanism is arranged inside the molding cavity, the demoulding mechanism comprises a first demoulding component and a second demoulding component, the first demoulding component comprises a first slider and a second slider, the second demoulding component comprises a third slider and a fourth slider, the first slider and the second slider abut to form a limiting groove, the third slider and the fourth slider abut to form an undercut protrusion, the protrusion is used to form an undercut structure on the plastic part; a limiting hole is provided at the abutment between the third slider and the fourth slider, the limiting groove and the limiting hole cooperate with each other to fix the plastic part;

[0008] The driving mechanism comprises a first driving module and a second driving module, wherein the first driving module is used to drive the first demoulding component to move, and the second driving module is used to drive the protrusion in the second demoulding component to move out of the undercut structure.

[0009] The technical solution of the first aspect of the present application has at least one of the following advantages or beneficial effects: the limiting groove and the limiting hole cooperate with each other to fix the plastic part, ensuring that the plastic part is not easily displaced due to the impact of the high-temperature injection material during injection molding, and ensuring the accuracy of product injection molding. A demolding mechanism is arranged inside the molding cavity, and the demolding mechanism is driven to slide by the driving mechanism to complete the demolding of the product. The driving mechanism includes a first driving module and a second driving module. When the product is demolded, the first driving module drives the first demolding component to slide, and a clearance space is formed between the first slider and the second slider, providing space for the subsequent demolding action of the second demolding component; the second driving module drives the second demolding component to slide, and the third slider and the fourth slider cooperate with each other to move to further expand the space between the protrusion and the product. The second demolding component moves the protrusion out of the undercut structure of the plastic part through the clearance space formed between the first slider and the second slider, thereby realizing the demolding of the product. The demoulding mechanism and the driving mechanism cooperate with each other to move the first slider and the second slider to form a clearance space. The third slider and the fourth slider separate the product and the undercut protrusion through the clearance space to achieve smooth demoulding of the product, thereby avoiding demoulding damage or pulling of the product and improving the product yield rate.

[0010] According to some embodiments of the present application, the first driving module includes a first driving component and a second driving component, the first driving component is used to drive the first slider to move in a first direction, and the second driving component is used to drive the second slider to move in a second direction; the second driving module includes a third driving component and a fourth driving component, the third driving component is used to drive the third slider to move in a third direction, and the fourth driving component is used to drive the fourth slider to move in a fourth direction.

[0011] According to some embodiments of the present application, the undercut structure formed on the plastic part is an arc-shaped structure, the undercut structure on the plastic part is an arc-shaped structure, the first slider is provided with a first buckle matching the arc-shaped structure, the second slider is provided with a second buckle matching the arc-shaped structure, the first slider is connected to the undercut structure through the first buckle, and the second slider is connected to the undercut structure through the second buckle.

[0012] According to some embodiments of the present application, a first protrusion structure is provided on the inner side of the third slider, and a second protrusion structure is provided on the inner side of the fourth slider, and the first protrusion structure and the second protrusion structure form the protrusion at the abutment point between the third slider and the fourth slider.

[0013] According to some embodiments of the present application, an injection mold shell is also included, and the injection mold shell includes an upper mold body and a lower mold body, and the upper mold body and the lower mold body are abutted to form an accommodating cavity for accommodating the molding cavity.

[0014] According to some embodiments of the present application, an injection molding component is also included, which includes an injection port and an injection pipe. The injection port is arranged at the top of the upper mold body, the input end of the injection pipe is connected to the injection port, and the output end of the injection pipe is connected to the molding cavity.

[0015] According to some embodiments of the present application, a reset assembly is further included, wherein the reset assembly includes a first reset plate and a second reset plate, wherein the first reset plate is disposed at the bottom of the first slider; and the second reset plate is disposed at the bottom of the second slider.

[0016] According to some embodiments of the present application, the reset assembly further includes a third reset plate and a fourth reset plate, the third reset plate is arranged at the bottom of the third slider, and the fourth reset plate is arranged at the top of the fourth slider.

[0017] According to some embodiments of the present application, a fixing component is further included, wherein the fixing component includes a first fixing column and a second fixing column, the first sliding block is provided with a first groove, the first reset plate is provided with a second groove, the positions of the first groove and the second groove correspond, the first fixing column sequentially passes through the first groove and the second groove so that the first sliding block is fixed to the first reset plate through the first fixing column; the second sliding block is provided with a third groove, the second reset plate is provided with a fourth groove, the position of the third groove corresponds to the position of the fourth groove, the second fixing column sequentially passes through the third groove and the fourth groove so that the second sliding block is fixed to the second reset plate through the second fixing column.

[0018] According to some embodiments of the present application, a limit assembly is further included, wherein the limit assembly includes a first limit plate and a second limit plate, wherein the first limit plate is used to limit the position of the third slider, and the second limit plate is used to limit the position of the fourth slider.

[0019] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the examples of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0021] Figure 1 It is a structural schematic diagram of a demoulding mechanism provided in an embodiment of the present application;

[0022] Figure 2 is a structural schematic diagram of another demoulding mechanism provided in an embodiment of the present application;

[0023] Figure 3 is an exploded view of an injection mold provided in an embodiment of the present application;

[0024] Figure 4 is a cross-sectional view of an injection mold provided in an embodiment of the present application;

[0025] Figure 5 It is a schematic diagram of another demoulding mechanism provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0028] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0029] It should be understood that in the description of the embodiments of the present application, the meaning of multiple (or multiple items) is more than two, greater than, less than, exceed, etc. are understood to not include the number, and above, below, within, etc. are understood to include the number.

[0030] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0031] Injection molding is a plastic molding process. Injection molding involves heating thermoplastic plastic materials to a molten state, and then injecting the molten plastic material into the injection mold. The injection mold is a tool for producing plastic products and also a tool for giving plastic products a complete structure and precise size. Usually, there is a specific shape in the injection mold. After the thermoplastic plastic material cools and solidifies, the injection mold is opened, and the plastic part is pushed out of the injection mold through a ejector pin or other demolding mechanism to obtain a product of the desired shape. Injection molding is an efficient method for mass production of complex-shaped plastic parts, and is widely used in many industries such as automobiles, consumer electronics, medical, and packaging.

[0032] In the related art, in order to meet the functional requirements of the product, many products are provided with undercut shapes. The undercut refers to a surface that is concave inward or inclined downward in the direction of the product being demolded from the injection mold. The undercut-shaped part of the product is easily covered or surrounded by the injection mold, making it difficult to separate the product directly from the injection mold during the molding process, resulting in frequent deformation or breakage of the product structure during the demolding process, causing the product to be scrapped and reducing the product yield rate.

[0033] The embodiment of the present application provides an injection mold, which realizes smooth demoulding of the product through the cooperation of a demoulding mechanism and a driving mechanism, avoids damage or breakage of the product caused by demoulding, and improves the yield rate of the product.

[0034] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0035] Reference Figure 1 , Figure 1 : It is a structural schematic diagram of a demoulding mechanism provided in an embodiment of the present application, the injection mold includes a molding cavity, a demoulding mechanism and a driving mechanism; the molding cavity is used for injection molding of the product, the demoulding mechanism is arranged inside the molding cavity, and the demoulding mechanism includes a first demoulding component and a second demoulding component, wherein the first demoulding component includes a first slider 100 and a second slider 200, and the second demoulding component includes a third slider 300 and a fourth slider 400, the first slider 100 and the second slider 200 abut to form a limiting groove, the third slider 300 and the fourth slider 400 abut to form an undercut protrusion, and the protrusion is used to form an undercut structure on the plastic part 500; a limiting hole is provided at the abutment between the third slider 300 and the fourth slider 400, and the limiting groove and the limiting hole cooperate with each other to fix the plastic part 500; the driving mechanism includes a first driving module group and a second driving module group, the first driving module group is used to drive the first demoulding component to move, and the second driving module group is used to drive the protrusion in the second demoulding component to move out of the undercut structure.

[0036] In some embodiments of the present application, the molding cavity is used for injection molding of the product. After the product is injection molded, a demoulding process is required to separate the product from the molding cavity. The present application sets a demoulding mechanism inside the molding cavity, and drives the demoulding mechanism to slide through a driving mechanism to complete the demoulding process of the product. The driving mechanism includes a first driving module and a second driving module. When the product is demoulded, the first driving module drives the first demoulding component to slide, and a clearance space is formed between the first slider and the second slider, providing space for the subsequent demoulding action of the second demoulding component; the second driving module drives the second demoulding component to slide, and the third slider and the fourth slider cooperate with each other to further expand the space between the protrusion and the product. The second demoulding component moves the protrusion out of the undercut structure of the plastic part through the clearance space formed between the first slider and the second slider, thereby realizing the demoulding of the product. Through the cooperation of the demoulding mechanism and the driving mechanism, the first slider and the second slider are moved to form a clearance space, and the third slider and the fourth slider separate the product and the undercut protrusion through the clearance space, realizing the smooth demoulding of the product, thereby avoiding the product demoulding damage or pulling, and improving the product yield.

[0037] In some embodiments of the present application, the limiting groove and the limiting hole cooperate with each other to fix the plastic part 500, ensuring that the plastic part 500 is not easily displaced due to the impact of the high-temperature injection material during injection molding, thereby ensuring the accuracy of product injection molding.

[0038] Reference Figure 2 , Figure 22 is a schematic diagram of the structure of another demolding mechanism provided in an embodiment of the present application. In some embodiments of the present application, the undercut structure on the plastic part 500 is an arc structure, the first slider 100 is provided with a first buckle 101 matching the arc structure, the second slider 200 is provided with a second buckle 201 matching the arc structure, the first slider 100 is connected to the undercut structure through the first buckle 101, and the second slider 200 is connected to the undercut structure through the second buckle 201.

[0039] By providing a first buckle 101 matching the arc structure on the first slider 100 and a second buckle 201 matching the arc structure on the second slider 200, and the first slider 100 is connected to the undercut structure through the first buckle 101, and the second slider 200 is connected to the undercut structure through the second buckle 201, the product meets the production and functional use requirements of the product during injection molding; in addition, the first slider 100 is connected to the undercut structure through the first buckle 101, and the second slider 200 is connected to the undercut structure through the second buckle 201, so that the position of the product can be fixed, ensuring that the product is not easily displaced due to the impact of high-temperature injection molding materials during injection molding, thereby ensuring the accuracy of product injection molding.

[0040] In some embodiments of the present application, when the product is demolded, the first driving component drives the first slider 100 to move in the first direction to separate the first slider 100 and the first undercut structure 510, and the second driving component drives the second slider 200 to move in the second direction to separate the second slider 200 and the second undercut structure 520, so that a clearance space is formed between the first slider 100 and the second slider 200, releasing the undercut of the product and creating space for the subsequent demolding action of the second demolding component, so that the demolding mechanism can realize smooth demolding of the product, avoid demolding damage or pull of the product, and improve the yield rate of the product.

[0041] In some embodiments of the present application, a first protrusion structure (not shown) is provided on the inner side of the third slider 300, and a second protrusion structure 410 is provided on the inner side of the fourth slider 400. The first protrusion structure and the second protrusion structure 410 form a protrusion at the abutment between the third slider 300 and the fourth slider 400. The protrusion is used to form an undercut structure on the plastic part 500, so that the product meets the production and functional use requirements of the product during injection molding. When the product is demoulded, the second driving module drives the second demoulding component to slide, and the third slider 300 and the fourth slider 400 cooperate with each other to move and further expand the space between the protrusion and the product. The third slider 300 and the fourth slider 400 move the protrusion out of the undercut structure of the plastic part 500 through the clearance space formed between the first slider 100 and the second slider 200, thereby realizing the demoulding of the product, avoiding the product demoulding damage or pulling, and improving the product yield.

[0042] In some embodiments of the present application, the first driving module includes a first driving component and a second driving component, the first driving component is used to drive the first slider 100 to move in the first direction, and the second driving component is used to drive the second slider 200 to move in the second direction; the second driving module includes a third driving component and a fourth driving component, the third driving component is used to drive the third slider 300 to move in the third direction, and the fourth driving component is used to drive the fourth slider 400 to move in the fourth direction.

[0043] In some embodiments of the present application, the first direction is left, the second direction is right, the third direction is forward, and the fourth direction is backward; the first driving component drives the first slider 100 to move left, and the second driving component drives the second slider 200 to move right, so that the first slider 100 and the second slider 200 move relative to each other in opposite directions, thereby forming a clearance space between the first slider 100 and the second slider 200, creating space for the subsequent demolding action of the second demolding component; the third driving component drives the third slider 300 to move forward, and the fourth driving component drives the fourth slider 400 to move backward, so that the third slider 300 and the fourth slider 400 move relative to each other in opposite directions, further expanding the space between the protrusion and the product. At this time, the second demolding component moves the protrusion of the second demolding component out of the undercut structure of the plastic part 500 through the clearance space formed by the first slider 100 moving left and the second slider 200 moving right, thereby achieving smooth demolding of the product, avoiding demolding damage or pulling of the product, and improving the yield rate of the product.

[0044] It should be noted that the first direction can be left or right. When the first direction is left, the second direction is right. It is sufficient to ensure that the first direction and the second direction are opposite. The embodiment of the present application does not limit the first direction and the second direction.

[0045] It should be noted that the third direction can be forward or backward. When the third direction is forward, the fourth direction is backward. It is sufficient to ensure that the third direction and the fourth direction are opposite. The embodiment of the present application does not limit the third direction and the fourth direction.

[0046] In some embodiments of the present application, the driving mechanism may be one of a motor, a hydraulic driving device, a pneumatic driving device, a mechanical driving device and a servo driving device. Technical personnel in this field may select a suitable driving mechanism according to actual conditions. The embodiments of the present application do not limit the type of driving mechanism.

[0047] Reference Figure 3 and Figure 4 , Figure 3 is an exploded view of an injection mold provided in an embodiment of the present application, Figure 4: is a cross-sectional view of an injection mold provided by an embodiment of the present application; in some embodiments of the present application, the injection mold further includes an injection mold shell, the injection mold shell includes an upper mold body 600 and a lower mold body 630, the upper mold body 600 and the lower mold body 630 abut to form a receiving cavity for receiving the molding cavity 700. The injection mold further includes an injection molding assembly, the injection molding assembly includes an injection molding port 610 and an injection molding pipe 620, the injection molding port 610 is arranged at the top of the upper mold body 600, the input end of the injection molding pipe 620 is connected to the injection molding port 610, and the output end of the injection molding pipe 620 is connected to the molding cavity 700. By setting the injection port 610 at the top of the upper mold body 600, it is convenient for the staff to add rubber through the injection port 610. The input end of the injection pipe 620 is connected with the injection port 610, and the output end of the injection pipe 620 is connected with the molding cavity 700. The pouring material can flow into the molding cavity 700 through the injection port 610, ensuring that the molten plastic can evenly and quickly fill the entire molding cavity 700, thereby improving the molding quality and precision of the product. In addition, by setting the injection pipe 620, the pressure loss of the rubber during the transportation process can be reduced.

[0048] It should be noted that, in some embodiments of the present application, the shape of the injection molding pipe 620 can be a circular tube shape or a funnel shape, and the embodiments of the present application do not limit the shape of the injection molding pipe 620.

[0049] Reference Figure 3 and Figure 5 , Figure 5 : is a structural schematic diagram of another demoulding mechanism provided by an embodiment of the present application; in some embodiments of the present application, the injection mold further includes a reset assembly, the reset assembly includes a first reset plate 110 and a second reset plate 210, the first reset plate 110 is arranged at the bottom of the first slider 100, and the second reset plate 210 is arranged at the bottom of the second slider 200. The first reset plate 110 is used to drive the first slider 100 to move to the first reset plate 110 through the first driving assembly after demoulding is completed, so that the first slider 100 can quickly return to the initial position after the demoulding process is completed, ensuring that the first slider 100 returns to the exact initial position before the next demoulding process, thereby improving the accuracy of the demoulding process. Similarly, the second reset plate 210 is used to drive the second slider 200 to move to the second reset plate 210 through the second driving assembly after demoulding is completed, so that the second slider 200 can quickly return to the initial position after the demoulding process is completed, ensuring that the second slider 200 returns to the exact initial position before the next demoulding process, thereby improving the accuracy of the demoulding process.

[0050] It should be noted that, in some embodiments of the present application, the first reset plate 110 is arranged at the bottom of the first slider 100, and the first reset plate 110 can also be used to support the first slider 100; the second reset plate 210 is arranged at the bottom of the second slider 200, and the second reset plate 210 can also be used to support the second slider 200.

[0051] In some embodiments of the present application, the reset assembly further includes a third reset plate (not shown in the figure) and a fourth reset plate (not shown in the figure), the third reset plate being arranged at the bottom of the third slider 300, and the fourth reset plate being arranged at the top of the fourth slider 400. The third reset plate is used to drive the third slider 300 to move to the third reset plate through the third driving assembly after demoulding is completed, so that the third slider 300 can quickly return to the initial position after the demoulding process is completed, ensuring that the third slider 300 returns to the exact initial position before the next demoulding process, thereby improving the accuracy of the demoulding process. Similarly, the fourth reset plate is used to drive the fourth slider 400 to move to the fourth reset plate through the fourth driving assembly after demoulding is completed, so that the fourth slider 400 can quickly return to the initial position after the demoulding process is completed, ensuring that the fourth slider 400 returns to the initial position before the next demoulding process, thereby improving the accuracy of the demoulding process.

[0052] In some embodiments of the present application, the injection mold also includes a fixing component, which includes a first fixing column 120 and a second fixing column 220. The first slider 100 is provided with a first groove 102, and the first reset plate 110 is provided with a second groove (not shown in the figure). The positions of the first groove 102 and the second groove correspond to each other. The first fixing column 120 sequentially passes through the first groove 102 and the second groove so that the first slider 100 is fixed to the first reset plate 110 through the first fixing column 120. The second slider 200 is provided with a third groove 202, and the second reset plate 210 is provided with a fourth groove (not shown in the figure). The position of the third groove 202 corresponds to the position of the fourth groove. The second fixing column 220 sequentially passes through the third groove 202 and the fourth groove so that the second slider 200 is fixed to the second reset plate 210 through the second fixing column 220.

[0053] It can be understood that the positions of the first groove 102 and the second groove correspond to each other in the same vertical and horizontal direction, and the first groove 102 is located directly above the second groove, so that the first slider 100 passes through the first groove 102 and the second groove in sequence through the first fixing column 120 and is fixed on the first reset plate 110, so that the first slider 100 can quickly return to its initial position through the first reset plate 110 after completing the demolding process, ensuring that the first slider 100 returns to the exact initial position before the next demolding process, thereby improving the accuracy of the demolding process. Similarly, the positions of the third groove 202 and the fourth groove correspond to each other in the same vertical and horizontal direction, and the third groove 202 is located directly above the fourth groove, so that the second slider 200 passes through the third groove 202 and the fourth groove in sequence through the second fixing column 220 and is fixed on the second reset plate 210, so that the second slider 200 can quickly return to its initial position through the second reset plate 210 after completing the demolding process, ensuring that the second slider 200 returns to its initial position before the next demolding process, thereby improving the accuracy of the demolding process.

[0054] In some embodiments of the present application, the injection mold further includes a limiting assembly, the limiting assembly includes a first limiting plate 320 and a second limiting plate 420, the first limiting plate 320 is used to limit the position of the third slider 300, and the first limiting plate 320 is arranged on the back of the third slider 300; it is understandable that when the third slider 300 completes the demoulding process and needs to be reset, the third driving assembly drives the third slider 300 to reset to the third reset plate, because the third driving assembly drives the third slider 300 to move forward or backward when resetting, so that the third slider 300 has a certain inertia, which may cause the third slider 300 to be unable to accurately reset, so the first limiting plate 320 is arranged on the back of the third slider 300 to ensure that the third slider 300 is accurately reset, thereby improving the accuracy of the demoulding process. Similarly, the second limiting plate 420 is used to limit the position of the fourth slider 400. The second limit plate 420 is arranged on the back of the fourth slider 400; it can be understood that when the fourth slider 400 completes the demolding process and needs to be reset, the fourth driving component drives the fourth slider 400 to reset to the fourth reset plate. Since the fourth driving component drives the fourth slider 400 to move forward or backward when resetting, the fourth slider 400 has a certain inertia, which may cause the fourth slider 400 to be unable to be accurately reset. Therefore, setting the second limit plate 420 on the back of the fourth slider 400 can ensure the accurate reset of the fourth slider 400, thereby improving the accuracy of the demolding process.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0056] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above-mentioned implementation mode. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the present application. These equivalent deformations or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. An injection mold, characterized in that: include: Molding cavity, used for injection molding of products; A demoulding mechanism is arranged inside the molding cavity, the demoulding mechanism comprises a first demoulding component and a second demoulding component, the first demoulding component comprises a first slider and a second slider, the second demoulding component comprises a third slider and a fourth slider, the first slider and the second slider abut to form a limiting groove, the third slider and the fourth slider abut to form an undercut protrusion, the protrusion is used to form an undercut structure on the plastic part; a limiting hole is provided at the abutment between the third slider and the fourth slider, the limiting groove and the limiting hole cooperate with each other to fix the plastic part; The driving mechanism comprises a first driving module and a second driving module, wherein the first driving module is used to drive the first demoulding component to move, and the second driving module is used to drive the protrusion in the second demoulding component to move out of the undercut structure.

2. The injection mold according to claim 1, characterized in that: The first driving module includes a first driving component and a second driving component, the first driving component is used to drive the first slider to move in a first direction, and the second driving component is used to drive the second slider to move in a second direction; the second driving module includes a third driving component and a fourth driving component, the third driving component is used to drive the third slider to move in a third direction, and the fourth driving component is used to drive the fourth slider to move in a fourth direction.

3. The injection mold according to claim 1, characterized in that: The undercut structure on the plastic part is an arc-shaped structure, the first slider is provided with a first buckle matching the arc-shaped structure, the second slider is provided with a second buckle matching the arc-shaped structure, the first slider is connected to the undercut structure via the first buckle, and the second slider is connected to the undercut structure via the second buckle.

4. The injection mold according to claim 1, characterized in that: A first protrusion structure is disposed on the inner side of the third slider, and a second protrusion structure is disposed on the inner side of the fourth slider. The first protrusion structure and the second protrusion structure form the protrusion at the abutment portion between the third slider and the fourth slider.

5. The injection mold according to claim 1, characterized in that: The invention also comprises an injection mold shell, wherein the injection mold shell comprises an upper mold body and a lower mold body, wherein the upper mold body and the lower mold body are abutted to form an accommodating cavity for accommodating the molding cavity.

6. The injection mold according to claim 5, characterized in that: It also includes an injection molding component, which includes an injection molding port and an injection molding pipe. The injection molding port is arranged on the top of the upper mold body, the input end of the injection molding pipe is connected to the injection molding port, and the output end of the injection molding pipe is connected to the molding cavity.

7. The injection mold according to claim 1, characterized in that: It also includes a reset assembly, which includes a first reset plate and a second reset plate. The first reset plate is arranged at the bottom of the first slider; the second reset plate is arranged at the bottom of the second slider.

8. The injection mold according to claim 7, characterized in that: The reset assembly further includes a third reset plate and a fourth reset plate, wherein the third reset plate is arranged at the bottom of the third sliding block, and the fourth reset plate is arranged at the top of the fourth sliding block.

9. The injection mold according to claim 7, characterized in that: The invention also includes a fixing component, wherein the fixing component includes a first fixing column and a second fixing column, the first sliding block is provided with a first groove, the first reset plate is provided with a second groove, the positions of the first groove and the second groove correspond to each other, the first fixing column sequentially passes through the first groove and the second groove, so that the first sliding block is fixed to the first reset plate through the first fixing column; the second sliding block is provided with a third groove, the second reset plate is provided with a fourth groove, the position of the third groove corresponds to that of the fourth groove, the second fixing column sequentially passes through the third groove and the fourth groove, so that the second sliding block is fixed to the second reset plate through the second fixing column.

10. The injection mold according to claim 1, characterized in that: It also includes a limiting assembly, which includes a first limiting plate and a second limiting plate. The first limiting plate is used to limit the position of the third slider, and the second limiting plate is used to limit the position of the fourth slider.

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