A mold and injection molding machine

Abstract

The utility model discloses embodiment relates to injection moulding technical field, especially disclose a kind of mould and injection molding machine, including first die, second die, hole forming assembly, drive mechanism, first die and second die are oppositely arranged, drive mechanism is connected with second die, drive mechanism is used to drive second die reciprocating movement along first direction, when second die and first die close die, it is enclosed into mould cavity, hole forming assembly is after closing die, part extends to mould cavity.When injection moulding product is injected into mould cavity, hole forming assembly is formed on product Hole.In product forming after, first drive hole forming assembly to separate from product, then by drive mechanism second die is driven to the direction of moving away from first die, realize demoulding.By the above-mentioned mode, the utility model embodiment can be formed on article Hole structure in the process of forming article simultaneously, and when demoulding, the damage to mould can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, and in particular to a mold and an injection molding machine. Background Technology

[0002] Plastic parts are generally molded using molds. Depending on the application requirements, plastic parts are designed with corresponding cavity structures, and recessed holes are often created on the inner walls of these cavities. Examples include bolt holes for assembly, fixing, or strengthening the overall strength of the workpiece. During the production of plastic parts, these hole structures often need to be molded in a single process. Currently, the demolding process for producing these types of plastic parts typically uses a pin-insertion sliding block method to demold the hole-shaped areas from the front mold of the mold equipment.

[0003] In the production process of related plastic parts, the demolding method using the insert pin slider is to eject the mold by using the ejector pin component inside the slider. However, this method inevitably causes the ejector pin component to collide with the mold, which poses a risk of damaging the mold. Utility Model Content

[0004] The present invention aims to provide a mold and injection molding machine that can simultaneously form a hole structure on the article during the molding process, and can reduce the risk of damage to the mold during demolding.

[0005] To solve the above-mentioned technical problems, the present invention provides a mold comprising: a first mold core, a second mold core, a hole-forming assembly, and a driving mechanism. The second mold core and the first mold core are arranged opposite to each other. When the second mold core and the first mold core are closed, the second mold core and the first mold core enclose a mold cavity. The second mold core is provided with a sliding hole communicating with the mold cavity. The hole-forming assembly includes a slider and a hole-forming part. The slider is slidably disposed in the sliding hole. An inclined groove is provided on the side of the slider facing the mold cavity, and the inclined groove communicates with the mold cavity. The hole-forming part includes a rod and a hole-forming portion. One end of the rod is slidably inserted into the inclined groove, and the hole-forming portion is disposed in the... At the other end of the rod, when the second mold core and the first mold core are closed, the hole-forming part extends into the mold cavity. The driving mechanism is connected to the second mold core. The driving mechanism is used to drive the second mold core to reciprocate along a first direction so that the second mold core and the first mold core approach each other for mold closing, or the second mold core and the first mold core separate for demolding. After the second mold core and the first mold core are closed, when the slider is driven to slide towards the mold cavity, the hole-forming part moves downward under the cooperation of the inclined groove and the rod. When the slider is driven to slide away from the mold cavity, the hole-forming part moves upward under the cooperation of the inclined groove and the rod.

[0006] Optionally, the second mold core is provided with a limiting groove on the inner wall of the sliding hole; the hole forming component further includes a limiting platform, which is fixed to the rod body. When the hole forming component moves downward to a predetermined position, the limiting platform is inserted into the limiting groove to fix the hole forming component to the second mold core.

[0007] Optionally, the driving mechanism includes a driving member and a base block, the driving member being connected to the base block, and the second mold core being disposed on the base block; the hole forming assembly further includes a travel limiting component, the travel limiting component being connected to the slider and the base block respectively, and the travel limiting component being used to limit the travel of the slider relative to the base block.

[0008] Optionally, the bottom block is provided with an extension, and the extension is provided with a through hole; the limiting component further includes a limiting member and an elastic member, the limiting member includes a limiting rod and a limiting cap, one end of the limiting rod is fixed to the limiting cap, and the other end of the limiting rod passes through the elastic member and the through hole in sequence and is fixed to the slider, the extension is located between the limiting cap and the slider, and the longitudinal cross-sectional area of ​​the limiting cap is larger than the longitudinal cross-sectional area of ​​the through hole.

[0009] Optionally, the extension portion has a mounting groove on the surface facing the limiting cap, the through hole is located at the bottom of the mounting groove, and the elastic element portion is fixed to the mounting groove.

[0010] Optionally, the base block is provided with a slot, and the slider is provided with a hole; the hole-forming assembly further includes a post, and when the slot and the hole are aligned and the post is inserted into the hole and the slot, the slider and the base block are fixed together.

[0011] Optionally, when the insert is inserted into the socket and slot, the elastic element is in a compressed state; when the insert is pulled out from the socket and slot, the slider moves away from the mold cavity under the action of the elastic element.

[0012] Optionally, the second mold core is further provided with an opening, and the insertion hole is inclined; when the insert is inserted into the insertion hole from the opening and then into the slot through the insertion hole, the insert pushes the slider to move towards the mold cavity.

[0013] Optionally, one end of the insertion post is provided with a cap.

[0014] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is to provide an injection molding machine, including the above-mentioned injection mold structure.

[0015] The beneficial effects of this utility model embodiment are as follows: Unlike existing technologies, this utility model embodiment provides a mold, including: a first mold core, a second mold core, a hole-forming assembly, and a driving mechanism. The second mold core and the first mold core are arranged opposite to each other. When the second mold core and the first mold core are closed, the second mold core and the first mold core enclose a mold cavity, which is used for injection molding articles. The second mold core is provided with a sliding hole communicating with the mold cavity. The hole-forming assembly includes a slider and a hole-forming part. The slider is slidably disposed in the sliding hole. A groove is provided on the side of the slider facing the mold cavity, and the groove communicates with the mold cavity. The hole-forming part includes a rod and a hole-forming portion. One end of the rod is slidably inserted into the groove, and the hole-forming portion is disposed at the other end of the rod. When the driving mechanism drives the second mold core and the first mold core to close, and when the slider is driven to slide towards the mold cavity, the hole-forming part moves downwards with the cooperation of the groove and the rod. During the molding process, when the article is being formed in the mold cavity, the hole-forming part of the hole-forming component will form a hole structure on the article. When demolding is required, the slider is first driven to slide away from the mold cavity. With the cooperation of the inclined groove and the rod, the hole-forming component moves upward so that the hole-forming part leaves the article. Then, the first mold core and the second mold core are driven to demold, so that the hole structure is formed simultaneously when the article is being formed. In addition, during the mold opening process, the hole-forming component moves upward and leaves the article first, and then the first mold core and the second mold core are controlled to demold, reducing the risk of damage during the demolding process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the mold provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the exploded state of the mold provided in this embodiment of the utility model. Figure 1 ; Figure 3 This is a schematic diagram of the exploded state of the hole-forming component provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the exploded state of the mold provided in this embodiment of the utility model. Figure 2 ; Figure 5 This is a cross-sectional schematic diagram of the mold in the mold-opening state provided in this embodiment of the utility model; Figure 6 This is a cross-sectional schematic diagram of the mold in the mold-closed state provided in this embodiment of the utility model; Figure 7 yes Figure 6 A cross-sectional schematic diagram of the extension provided in section A.

[0018] Explanation of reference numerals in the attached figures: 100 mold, x-axis (first direction), y-axis (second direction); 1. Second mold core, 11. Sliding hole, 12. Mold cavity, 13. Limiting groove, 14. Opening; 2. Hole forming assembly, 21. Slider, 211. Insertion hole, 22. Hole forming part, 221. Rod body, 222. Hole forming section, 223. Limiting platform, 23. Inclined groove, 24. Limiting assembly, 241. Limiting part, 2411. Limiting rod, 2412. Limiting cap, 242. Elastic part, 25. Insertion post, 251. Cap section; 3. Drive mechanism, 31. Drive component, 32. Base block, 321. Slot, 33. Extension, 331. Through hole, 332. Mounting slot; Detailed Implementation To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," "left," "right," and similar expressions used in this specification are merely based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0020] A mold is a tool used in industrial production to create shaped items. Some shaped items are designed with cavities according to their usage requirements, and the inner walls of these cavities are designed with perforated structures. The one-time molding and demolding of these perforated structures is the focus of the design of such molds. Currently, molds usually use a pin insertion mechanism designed on the mold structure corresponding to the above-mentioned structure for independent demolding. However, this method adds an extra demolding operation, increases the complexity of the operation, and the ejector pins of the pin insertion mechanism can damage the mold due to collisions during contact.

[0021] In view of this, the present invention provides a mold 100 that can form the hole structure on the inner wall of the cavity structure of the molded article in one step during the processing of the molded article, and can reduce damage to the mold during demolding.

[0022] To facilitate the reader's understanding of the concept of this utility model embodiment, the specific structure of the mold 100 is described below: Please see Figure 1 and Figure 2 The mold 100 includes a first mold core (not shown), a second mold core 1, a hole-forming component 2, and a drive mechanism 3. The first and second mold cores 1 are arranged opposite to each other. The drive mechanism 3 is connected to the second mold core 1 and is used to drive the second mold core 1 to reciprocate along a first direction x. When the second mold core 1 and the first mold core are closed, they enclose the mold cavity. After the first and second mold cores are closed, the hole-forming component 2 extends partially into the mold cavity 12. When a product is injection molded into the mold cavity 12, the hole-forming component 2 forms holes in the product. After the product is formed, the hole-forming component 2 is first driven to move upward, then backward, separating from the product. Then, the drive mechanism drives the second mold core to move away from the first mold core, thus achieving demolding.

[0023] The second mold core 1 is positioned opposite to the first mold core and is movable relative to the first mold core. When the second mold core 1 moves toward the first mold core until the first mold core and the second mold core 1 are closed, the space enclosed by the two forms a mold cavity 12. The second mold core 1 is provided with a sliding hole 11, which communicates with the mold cavity 12. The sliding hole 11 is used to install the hole forming component 2.

[0024] For the aforementioned hole-forming component 2, please refer to... Figure 3The hole-forming assembly 2 includes a slider 21 and a hole-forming component 22. The slider 21 is disposed within the sliding hole 11, and a groove 23 is provided at the end of the slider 21 facing the mold cavity 12, which communicates with the mold cavity 12. The hole-forming component 22 includes a rod 221 and a hole-forming portion 222. The cross-sectional shape of the rod 221 matches the cross-section of the groove 23. One end of the rod 221 is inserted into the groove 23 and can slide within the groove 23. The hole-forming portion 222 is fixed to the other end of the rod 221 and extends downward in a protruding shape. When the slider 21 moves along the sliding hole 11, the hole-forming component 22 moves along the second direction y under the cooperation of the groove 23 and the rod 221. The second direction y is perpendicular to the first direction x. Specifically, when the slider 21 moves towards the mold cavity 12... During operation, with the cooperation of the inclined groove 23 and the rod 221, the rod 221 moves downward. When the slider 21 moves away from the mold cavity 12, with the cooperation of the inclined groove 23 and the rod 221, the rod 221 moves upward. For example, when it is necessary to form a hole in the product, before injection molding into the mold cavity 12, the slider 21 is controlled to move towards the mold cavity 12 so that the hole-forming part 22 moves downward until the preset hole-forming position. After the hole-forming part 22 moves into place, the mold cavity 12 is then injected. At this time, the product injection molded in the mold cavity 12 will have a hole structure.

[0025] In some embodiments, please refer to Figure 3 and Figure 5 The inner wall of the second mold core 1 is provided with a limiting groove 13, which communicates with the sliding hole 11. The hole forming part 22 is provided with a limiting platform 223, which is fixed on the rod body 221. The shape of the limiting platform 223 matches that of the limiting groove 13. When the slider 21 drives the hole forming part 22 to move to the preset hole forming position, the limiting platform 223 inserts into the limiting groove 13, fixing the hole forming part 22 to the second mold core 1. By limiting the range of motion of the limiting platform 223 in directions other than the second direction y, it is ensured that the hole forming part 22 will not deviate in directions other than the second direction y during the movement.

[0026] It should be noted that in order to reduce the leakage of injection molding material from the gap between the inner wall of the slide hole and the slider, a seal can be installed between the slider and the inner wall of the slide hole. The seal will seal the gap, but will not affect the sliding of the slider relative to the slide hole.

[0027] The aforementioned drive mechanism 3 includes a drive member 31 and a base block 32. The drive member 31 is connected to the base block 32, and the base block 32 is connected to the second mold core 1. The drive member 31 drives the second mold core 1 through the base block 32, thereby causing the second mold core 1 to move. The slider 21 is slidably disposed on the base block 32. The hole forming assembly 2 also includes a travel limiting assembly 24, which is connected to both the slider 21 and the base block 32. The travel limiting assembly 24 is used to limit the travel of the slider 21 relative to the base block 32, thereby limiting the sliding range of the slider 21 within a safe travel range.

[0028] In some embodiments, please refer to Figure 4 and Figure 6 The base block 32 is provided with an extension 33, and the extension 33 is provided with a through hole 331. The limiting component 24 includes a limiting member 241 and an elastic member 242. The limiting member includes a limiting rod 2411 and a limiting cap 2412. One end of the limiting rod 2411 is fixed to the limiting cap 2412, and the other end passes through the elastic member 242 and the through hole 331 in sequence and is fixedly connected to the slider 21. The longitudinal cross-sectional area of ​​the limiting cap 2412 is larger than the longitudinal cross-sectional area of ​​the through hole 331 to restrict the limiting cap 2412 from passing through the through hole 331. When the driving mechanism 3 drives the second mold core 1, with the assistance of the limiting component 24, the slider 21 moves synchronously with the second mold core 1. For example, after the limiting cap 2412 abuts against the elastic member 242, when the driving mechanism 3 drives the second mold core 1 to move towards the first mold core, the slider 21 will follow the second mold core 1 to move towards the first mold core. When the second mold core 1 moves to the mold closing position, if the slider 21 is driven to slide relative to the bottom block 32 towards the mold cavity 12, the hole forming part 22 moves downward, and the elastic element 242 is in a compressed state. When the external force is removed, under the action of the elastic element 242, the slider 21 moves away from the mold cavity 12. At this time, the hole forming part 22 is driven to move upward, so that the hole forming part 22 moves upward away from the hole forming position.

[0029] In some embodiments, please refer to Figure 6 and Figure 7 The extension 33 has a mounting groove 332 in the direction facing the limit cap 2412, the elastic member 242 is installed in the mounting groove 332, and the through hole 331 is provided at the bottom of the mounting groove 332.

[0030] In some embodiments, please refer to Figures 3 to 6The hole-forming component 2 also includes a pin 25. Correspondingly, a slot 321 is provided on the bottom block 32, and an insertion hole 211 is provided on the slider 21. When the hole-forming component moves downward to the preset hole-forming position, the slot 321 and the insertion hole 211 are aligned. When the pin 25 passes through the insertion hole 211 and inserts into the slot 321, it fixes the slider 21 to the bottom block 32, positioning the slider 21 on the bottom block 32 and reducing the risk of the slider 21 sliding relative to the bottom block 32 under the action of the elastic element 242. When the pin 25 is removed from the insertion hole 211 and the slot 321, the elastic element 242 recovers its deformation, releases elastic potential energy, provides power, and drives the slider 21 to move away from the mold cavity 12 in the first direction x. At this time, the hole-forming component 22 moves upward until the hole-forming part 222 of the hole-forming component 22 is separated from the product formed in the mold cavity 12. Then, the second mold core 1 is controlled to move away from the first mold core to complete the mold opening.

[0031] In some embodiments, please refer to Figure 4 and Figure 5 The second mold core 1 is also provided with an opening 14, and the insertion hole 211 on the slider 21 is set at an angle. When the first mold core and the second mold core 1 are closed, when the insert pin 25 is inserted from the opening 14 into the insertion hole 221 and from the insertion hole 221 into the slot 321, it will push the slider 21 to move in the direction of the mold cavity 12 in the first direction x.

[0032] Furthermore, in some embodiments, please refer to Figure 3 One end of the insertion post 25 is provided with a cap 251, which makes it easy to hold during operation and prevents the insertion post 25 from slipping out of the hand.

[0033] In this embodiment of the invention, the mold 100 includes a first mold core, a second mold core 1, a hole-forming assembly 2, and a driving mechanism 3. The second mold core 1 is disposed opposite to the first mold core. When the second mold core 1 and the first mold core are closed, the second mold core 1 and the first mold core enclose a mold cavity 12, which is used for injection molding articles. The second mold core 1 is provided with a sliding hole 11 communicating with the mold cavity 12. The hole-forming assembly 2 includes a slider 21 and a hole-forming part 22. The slider 21 is slidably disposed in the sliding hole 11. A sloping groove 23 is provided on the side of the slider 21 facing the mold cavity 12, and the sloping groove 23 communicates with the mold cavity 12. The hole-forming part 22 includes a rod 221 and a hole-forming portion 222. One end of the rod 221 is slidably inserted into the sloping groove 23, and the hole-forming portion 222 is disposed at the other end of the rod 221. When the driving mechanism 3 drives the second mold core 1 and the first mold core to close, When the slider 21 slides toward the mold cavity 12, the hole-forming part 22 moves downward with the cooperation of the inclined groove 23 and the rod 221. At this time, when the article is formed in the mold cavity 12, the hole-forming part 222 of the hole-forming part 22 will form a hole structure on the article. When demolding is required, the slider 21 is first driven to slide away from the mold cavity 12. With the cooperation of the inclined groove 23 and the rod 221, the hole-forming part 22 moves upward so that the hole-forming part 222 leaves the article. Then the first mold core and the second mold core 1 are driven to demold.

[0034] This utility model also provides an embodiment of an injection molding machine, which includes the above-mentioned mold 100. For the specific structure and function of the above-mentioned mold 100, please refer to the above-mentioned embodiment, which will not be repeated here.

[0035] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A mold, characterized in that, include: First mold kernel; The second mold core is arranged opposite to the first mold core. When the second mold core and the first mold core are closed, the second mold core and the first mold core enclose a mold cavity. The second mold core is provided with a sliding hole that communicates with the mold cavity. A hole-forming assembly includes a slider and a hole-forming component. The slider is slidably disposed in a sliding hole. An inclined groove is provided on the side of the slider facing the mold cavity, and the inclined groove communicates with the mold cavity. The hole-forming component includes a rod and a hole-forming portion. One end of the rod is slidably inserted into the inclined groove, and the hole-forming portion is disposed at the other end of the rod. When the second mold core and the first mold core are closed, the hole-forming portion extends into the mold cavity. A drive mechanism is connected to the second mold core. The drive mechanism is used to drive the second mold core to reciprocate along a first direction so that the second mold core and the first mold core move closer together to close the mold, or the second mold core and the first mold core separate to demold. Specifically, after the second mold core and the first mold core are closed, when the slider is driven to slide towards the mold cavity, the hole-forming part moves downward under the cooperation of the inclined groove and the rod. When the slider is driven to slide away from the mold cavity, the hole-forming part moves upward under the cooperation of the inclined groove and the rod.

2. The mold according to claim 1, characterized in that, The second mold core is provided with a limiting groove on the inner wall of the sliding hole; The forming component also includes a limiting platform, which is fixed to the rod. When the forming component moves downward to a predetermined position, the limiting platform inserts into the limiting groove to fix the forming component to the second mold core.

3. The mold according to claim 1, characterized in that, The driving mechanism includes a driving component and a base block, the driving component is connected to the base block, and the second mold core is disposed on the base block; The hole-forming assembly further includes a travel-limiting component, which is connected to the slider and the base block respectively, and is used to limit the travel of the slider relative to the base block.

4. The mold according to claim 3, characterized in that, The bottom block is provided with an extension, and the extension is provided with a through hole; The limiting component further includes a limiting member and an elastic member. The limiting member includes a limiting rod and a limiting cap. One end of the limiting rod is fixed to the limiting cap, and the other end of the limiting rod passes through the elastic member and the through hole in sequence and is then fixed to the slider. The extension is located between the limiting cap and the slider. The longitudinal cross-sectional area of ​​the limiting cap is larger than the longitudinal cross-sectional area of ​​the through hole.

5. The mold according to claim 4, characterized in that, The extension portion has a mounting groove on its surface facing the limiting cap, the through hole is located at the bottom of the mounting groove, and the elastic element portion is fixed to the mounting groove.

6. The mold according to claim 4, characterized in that, The bottom block is provided with a slot, and the slider is provided with a socket; The hole-forming assembly also includes a post, which fixes the slider and the base block when the slot and the hole are aligned and the post is inserted into the hole and the slot.

7. The mold according to claim 6, characterized in that, When the insert is inserted into the socket and slot, the elastic element is in a compressed state; When the insert is pulled out of the socket and slot, the slider moves away from the mold cavity under the action of the elastic element.

8. The mold according to claim 6, characterized in that, The second mold core is also provided with an opening, and the insertion hole is inclined; When the insert is inserted into the socket through the opening and then into the slot through the socket, the insert pushes the slider to move toward the mold cavity.

9. The mold according to claim 6, characterized in that, One end of the insertion post is provided with a cap.

10. An injection molding machine, characterized in that, Includes the mold as described in any one of claims 1-9.

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