Injection molding equipment capable of automatically cutting materials in mold

Abstract

The injection molding equipment comprises a first mold core, a second mold core, a movable sliding block assembly and an opening and closing inclined buckle, movable cavities are formed in the first mold core and the second mold core, and the first mold core and the second mold core form a mold cavity; the movable sliding block assembly is inserted between the first mold core and the second mold core and is provided with a cold runner, and the cold runner is movably communicated with the mold cavity; the opening and closing inclined buckle penetrates through the second mold core to movably stretch out and draw back into the movable cavity, and is clamped with the end part of the movable sliding block assembly in a sliding manner, so that the opening and closing inclined buckle returns to the second mold core from the movable cavity during mold closing to laterally push the movable sliding block assembly to slide in the direction far away from the opening and closing inclined buckle, and the cold runner is communicated with the mold cavity so as to respectively form a material head and a product; during mold opening, the movable sliding block assembly is movably inserted into the movable cavity from the second mold core to laterally pull the movable sliding block assembly to get close to the opening and closing inclined buckle so that the material head can be pulled away from the product, the material opening and the product are separated, the tangent plane of the product is neat and free of material connection, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of molds, and more specifically, to an injection molding device with automatic in-mold cutting. Background Art

[0002] During the injection molding production process, for the processing of material mouth trimming, the existing technical means adopts a cutting assembly set in the injection molding equipment, which is composed of a support column, a hydraulic cylinder, and a cutter. After the injection molding pressure is maintained, the hydraulic cylinder is actuated to cause the cutter to be ejected to cut off the material head. After the material head is cut off, the product and the material mouth are separated, and the mold is opened and the product is ejected from the mold through the ejector. The above technical means eliminates the process of removing the material head after the product is taken out, but when using the cutter to cut the material head, the cutter will hit the surface of the mother mold core of the mold to completely cut off the material head. After repeated use, the cutter head will wear out, and the worn cutter head cannot cut the material head smoothly and neatly. When the material head that is not completely cut off is ejected, the runner and the product will be pulled, making the product ejection unbalanced, affecting the subsequent robot's grasping of the runner or product, thereby reducing production efficiency. Utility Model Content

[0003] The embodiment of the present application provides an injection molding device with automatic in-mold cutting, which can separate the material port and the product and achieve a neat product cross-section without any connected materials, thereby facilitating the smooth progress of subsequent processes and improving production efficiency.

[0004] The present application provides an injection molding device for automatic in-mold cutting, which adopts the following technical solutions:

[0005] An injection molding device with automatic in-mold cutting, comprising:

[0006] a first mold core and a second mold core, wherein the first mold core and the second mold core are provided with movable cavities, and the first mold core and the second mold core form a mold cavity;

[0007] A movable slider assembly is inserted between the first mold core and the second mold core, and the movable slider assembly is provided with a cold runner, and the cold runner is movably connected to the mold cavity;

[0008] The opening and closing bevel buckle passes through the second mold core and is movably extended and retracted in the movable cavity, and is slidably engaged with the end of the movable slider assembly, so that when the mold is closed, the second mold core is retracted from the movable cavity to push the movable slider assembly laterally to slide away from the opening and closing bevel buckle, thereby connecting the cold runner with the mold cavity to form the slug and the product respectively; when the mold is opened, the second mold core is movably inserted into the movable cavity to pull the movable slider assembly laterally toward the opening and closing bevel buckle to pull the slug away from the product.

[0009] Optionally, two groups of movable slider assemblies are provided, and the ends of the two groups of movable slider assemblies are respectively slidably engaged with the two sides of the opening and closing oblique buckles.

[0010] Optionally, a hot runner nozzle is further included, and the hot runner nozzle is inserted into the first mold core. The movable slider assembly includes:

[0011] a first slider, slidably disposed on the first mold core, the first slider being provided with a first cold flow groove and a clamping groove spaced apart from each other, the first cold flow groove being in communication with the hot channel nozzle;

[0012] The second slider is arranged on the second mold core; the second slider is provided with a second cold flow groove, and the second slider has a protrusion, which is inserted into the slot when the mold is closed. The first cold flow groove and the second cold flow groove are connected to form the cold runner when the mold is closed, and the two sides of the opening and closing bevel buckle are respectively slidably engaged with the end parts of the second sliders in the two groups of movable slider assemblies.

[0013] Optionally, an open groove is provided on the front side and the rear side of one end of the opening and closing oblique buckle, and the left groove wall and the right groove wall of the open groove are respectively slidably engaged with the end parts of the second sliders of the two movable slider assemblies.

[0014] Optionally, a sliding through hole is formed at the end of the second sliding block, and an opening is formed on the front side wall of the sliding through hole;

[0015] The left groove wall and the right groove wall are respectively slidably engaged with the sliding through hole through the openings of the second sliders in the two sets of the movable slider assemblies, so as to pull the front side wall of the sliding through hole toward the opening and closing oblique buckle direction when the mold is opened;

[0016] The left side wall of the sliding through hole has a guiding bevel, and the left groove wall and the right groove wall both have mutually connected guiding bevels and vertical parts, which slide and abut against the guiding bevel in turn to slide and push the movable slider assembly along the guiding bevel in the direction away from the opening and closing bevel buckle when the mold is closed.

[0017] Optionally, a positioning block is further included, and the positioning block is located at an end of the second sliding block away from the opening and closing oblique buckle to limit the distance that the second sliding block moves away from the opening and closing oblique buckle.

[0018] Optionally, a limit block is further included, the first slider is provided with a sliding groove, the limit block is provided on the first mold core, and the limit block is slidably connected to the sliding groove to limit the distance that the first slider moves toward the opening and closing oblique buckle.

[0019] Optionally, it further includes a plurality of first inserts, which are arranged in the second mold core and distributed on both sides of the second slider. The first inserts are provided with forming grooves, and the first mold core covers the forming grooves to form the closed mold cavity.

[0020] Optionally, the method further comprises: a wear-resistant block provided on the second mold core, the second sliding block being located between the wear-resistant block and the first sliding block and being slidably connected to the wear-resistant block;

[0021] A plurality of second inserts are embedded in the wear-resistant block.

[0022] Optionally, it further comprises: a plurality of product ejectors, each of which sequentially passes through the second mold core and the first insert to eject a plurality of products respectively;

[0023] A plurality of sprue ejectors are sequentially passed through the second mold core and the second insert to eject a plurality of sprues respectively.

[0024] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0025] During injection molding, the first mold core and the second mold core are closed, and the opening and closing bevel buckle is retracted from the movable cavity to the second mold core to push the movable slider assembly to slide away from the closing bevel buckle, and the movable slider assembly and the cold runner slide in the movable cavity to connect the cold runner with the mold cavity, and the hot material flows into the cold runner and the mold cavity. The hot material in the cold runner is formed into a material head, and the hot material in the mold cavity is formed into a product; after the product pressure holding is completed, the first mold core and the second mold core are opened, and the opening and closing bevel buckle is movably inserted into the movable cavity from the second mold core to pull the movable slider assembly closer to the opening and closing bevel buckle, so that the position of the cold runner and the mold cavity is staggered so that the material head is pulled away from the product, thereby achieving the effect of separating the material port and the product, and the product cross section is clean and tidy without connecting materials; in addition, the injection molding equipment can meet the needs of a variety of products that need to separate the material port in the mold, and can separate the material port and the product after opening the mold without adding too much mold structure or product structure, which facilitates the smooth progress of subsequent processes, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of an injection molding device with automatic in-mold cutting disclosed in an embodiment of the present application;

[0027] Figure 2 This is a structural schematic diagram of removing the first mold core and the second mold core from an injection molding device for automatic in-mold cutting disclosed in an embodiment of the present application;

[0028] Figure 3 This is a structural schematic diagram of an injection molding device with automatic in-mold cutting disclosed in an embodiment of the present application, highlighting the first slider and the first mold core;

[0029] Figure 4 This is a structural schematic diagram of an injection molding device with automatic in-mold cutting disclosed in an embodiment of the present application, highlighting the second slider and the second mold core;

[0030] Figure 5 A structural cross-sectional view showing the state 1 of the die-cutting component of an injection molding device for automatic in-mold cutting disclosed in an embodiment of the present application;

[0031] Figure 6 A structural cross-sectional view showing the second state of the die-cutting component of an injection molding device for automatic in-mold cutting disclosed in an embodiment of the present application;

[0032] Figure 7 This is a schematic structural diagram of an opening and closing oblique buckle of an injection molding device for automatic in-mold cutting disclosed in an embodiment of the present application;

[0033] Figure 8 This is a structural schematic diagram of an injection molding device with automatic in-mold cutting disclosed in an embodiment of the present application, highlighting the product ejector.

[0034] Description of reference numerals:

[0035] 1. First mold core; 11. Limit block; 12. First receiving groove; 2. Second mold core; 21. Positioning block; 22. First insert; 221. Forming groove; 23. Wear-resistant block; 24. Second insert; 25. Second receiving groove; 3. Movable cavity; 4. Mold cavity; 5. Movable slider assembly; 51. First slider; 511. First cold runner; 512. Hot runner mounting hole; 513. Clamping slot; 52. Second slider; 521. Sliding through hole; 5211. Guide slope; 522. Opening; 523. Second cold runner; 524. Raised portion; 514. Sliding groove; 54. Cold runner; 6. Opening and closing bevel buckle; 61. Left groove wall; 62. Right groove wall; 63. Guide slope; 64. Vertical portion; 65. Opening groove; 7. Hot runner nozzle; 8. Product ejector; 9. Material head ejector. DETAILED DESCRIPTION

[0036] The present application is further described in detail below with reference to the accompanying drawings.

[0037] The embodiment of the present application provides an injection molding device with automatic in-mold cutting, which can cut off the material head and achieve a neat cut surface without any connected materials, facilitating the smooth progress of subsequent processes, thereby improving production efficiency.

[0038] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0039] The terms "first," "second," "third," "fourth," and the like in the specification and claims of the present invention and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0040] For ease of understanding, the following describes the injection molding equipment for automatic in-mold cutting in the embodiment of the present application. Figures 1 to 5 , is an embodiment of the injection molding equipment for automatic in-mold cutting in the embodiment of the present application, including a first mold core 1, a second mold core 2, a movable slider assembly 5 and an opening and closing oblique buckle 6.

[0041] The first mold core 1 and the second mold core 2 are arranged to open and close. The first mold core 1 and the second mold core 2 can be arranged vertically or horizontally. Under the action of a driving force, the first mold core 1 and the second mold core 2 complete the mold closing or opening process. The first mold core 1 has a movable cavity 3, and the first mold core 1 and the second mold core 2 form a mold cavity 4 for product molding. When the first mold core 1 and the second mold core 2 are closed, the first mold core 1 and the second mold core 2 are sealed to form a closed mold cavity 4. The granular plastic is heated to a molten state and flows into the mold cavity 4 to complete the product injection molding.

[0042] The movable slider assembly 5 is arranged between the first mold core 1 and the second mold core 2, and the opening and closing bevel buckle 6 passes through the second mold core 2 and movably retracts in the movable cavity 3, and is slidably engaged with one end of the movable slider assembly 5, so that when the mold is closed, the opening and closing bevel buckle 6 retreats from the movable cavity 3 to the second mold core 2 while pushing the movable slider assembly 5 to slide away from the closing bevel buckle 6, and when the mold is opened, the opening and closing bevel buckle 6 is movably inserted into the movable cavity 3 from the second mold core 2 to pull the movable slider assembly 5 toward the opening and closing bevel buckle 6.

[0043] In other embodiments, the opening and closing bevel buckle 6 can also be driven by a driver, which drives the opening and closing bevel buckle 6 to drive the movable slider assembly 5 to slide along the movable cavity 3 with the first mold core 1 and the second mold core 2. The movement direction of the opening and closing bevel buckle 6 intersects with the movement direction of the movable slider assembly 5, and optionally, they are perpendicular to each other, that is, the opening and closing bevel buckle 6 moves in the vertical direction, while the movable slider assembly 5 moves in the horizontal direction. The movable slider assembly 5 and the opening and closing bevel buckle 6 cooperate to separate the formed product from the material outlet; after the first mold core 1 and the second mold core 2 are opened, the product ejector 8 is used to eject the formed product and the material head.

[0044] See also Figure 5 , the movable slider assembly 5 is provided with a cold runner 54, and the cold runner 54 is connected to the mold cavity 4 by sliding docking; when the mold is closed, the opening and closing bevel buckle 6 pushes the movable slider assembly 5 to slide away from the closing bevel buckle 6, so that the cold runner 54 is connected to the mold cavity 4 so that the hot material flows through the cold runner 54 and the mold cavity 4 to form the material head and the product respectively; when the mold is opened, the opening and closing bevel buckle 6 is inserted into the movable cavity 3 to pull the movable slider assembly 5 closer to the opening and closing bevel buckle 6 to make the cold runner 54 and the mold cavity 4 misaligned, thereby causing the material head to be pulled away from the product.

[0045] See also Figure 2 There are two groups of movable slider assemblies 5, and the two groups of movable slider assemblies 5 can be arranged side by side in the horizontal direction. The opening and closing oblique buckles 6 are located between the two groups of movable slider assemblies 5. One end portion of the two groups of movable slider assemblies 5 are respectively slidably engaged with the two sides of the opening and closing oblique buckles 6. The opening and closing oblique buckles 6 drive the two groups of movable slider assemblies 5 to move toward or away from each other, further improving production efficiency.

[0046] See also Figures 2 to 4 The movable slider assembly 5 includes a first slider 51 and a second slider 52. The first slider 51 is slidably arranged in the first mold core 1, and the second slider 52 is arranged in the second mold core 2. The first slider 51 is provided with a slot 513, and the second slider 52 is provided with a protrusion 524. When the mold is closed, the protrusion 524 is movably engaged in the slot 513, so that the first slider 51 and the second slider 52 are engaged. The first mold core 1 is provided with a first receiving groove 12, and the second mold core 2 is provided with a second receiving groove 25. The movable cavity 3 is formed by the docking of the first receiving groove 12 and the second receiving groove 25. The first slider 51 is located in the first receiving groove 12, and the second slider 52 is located in the second receiving groove 25.

[0047] To facilitate the flow of hot material into the cold runner 54, the injection molding apparatus further includes a hot runner nozzle 7, which is inserted into the first mold core 1. The first slider 51 further defines a first cold runner groove 511 and a hot runner mounting hole 512, which are spaced apart. The hot runner nozzle 7 is mounted to the first mold core 1 through the hot runner mounting hole 512, and the first cold runner groove 511 is connected to the hot runner nozzle 7. The second slider 52 defines a second cold runner groove 523, which, when the first cold runner groove 511 and the second cold runner groove 523 are engaged when the mold is closed, form a cold runner 54. The cold runner 54 is disposed on the movable slider assembly 5 and moves synchronously with the movable slider assembly 5.

[0048] When the movable slider assembly 5 slides to align and connect the inlet of the cold runner 54 with the hot runner nozzle 7, the outlet of the cold runner 54 is aligned and connected with the mold cavity 4. There are multiple outlets of the cold runner 54 and multiple mold cavities 4. Multiple outlets of the cold runner 54 are aligned and connected with multiple mold cavities 4, so that multiple mold cavities 4 can be injected at the same time.

[0049] See also Figure 2 To enable the movable slider assembly 5 to block the hot runner nozzle 7 and separate the slurry head from the product, a sliding slot 514 is defined on the sidewall of the first slider 51, spaced apart from the latching slot 513. A limit block 11 is provided on the first mold core 1. The limit block 11 is located within the sliding slot 514 and is slidably connected thereto to limit the distance the first slider 51 can move toward the opening and closing bevel buckle 6. When the limit block 11 contacts and presses against the inner wall of the sliding slot 514 away from the closing bevel buckle 6, the first slider 51 blocks the hot runner nozzle 7, and the second slider 6 separates the slurry head from the product. That is, when the opening and closing bevel buckle 6 drives the second slider 6 and the first slider 51 to slide in the horizontal direction so that the sliding groove 514 moves away from the inner wall of one side of the closing bevel buckle 6 and presses against the limit block 11, the sliding of the movable slider assembly 5 in the horizontal direction reaches the maximum stroke, so that the first slider 51 closes the hot runner nozzle 7 and prevents glue dripping from the hot runner nozzle 7; at the same time, the cold runner 54 in the movable slider assembly 5 moves, so that the position of the cold runner 54 outlet and the mold cavity 4 are misaligned. Under the action of the second slider 52 and the second mold core 2, the material head and the product are separated, so that the product cross-section is clean and tidy without any continuous material.

[0050] See also Figure 2 and Figure 6In order to move the movable slider assembly 5 to make the cold runner 54 accurately connected to the hot runner nozzle 7 and the mold cavity 4, the injection molding equipment also includes a positioning block 21. The positioning block 21 is located at one end of the second slider 52 away from the closing bevel buckle 6 to limit the distance the second slider 52 moves away from the closing bevel buckle 6. When the positioning block 21 contacts and presses against the end of the second slider 52, the hot runner nozzle 7 is aligned and connected with the inlet of the cold runner 54 through the first slider 51. That is, when the opening and closing bevel buckle 6 drives the second slider 52 and the first slider 51 to slide until the positioning block 21 contacts and presses against the end of the second slider 52, the movable slider assembly 5 slides to the maximum stroke of movement away from the closing bevel buckle 6, thereby achieving precise control of the movable slider assembly 5 so that the hot runner nozzle 7 is aligned and connected with the inlet of the cold runner 54, and the outlet of the cold runner 54 is aligned and connected with the mold cavity 4.

[0051] See also Figure 2 、 Figure 5 and Figure 6 Since the movable slider assembly 5 is provided with two groups, the two sides of the opening and closing bevel buckle 6 are respectively slidably engaged with the ends of the two second sliders 52. During injection molding, the first mold core 1 and the second mold core 2 are closed, and the protrusion 524 of the second slider 52 is located in the locking groove 513 of the first slider 51, so that the first slider 51 and the second slider 52 are engaged; the opening and closing bevel buckle 6 is retracted from the movable cavity 3 to the second mold core 2, while pushing the second slider 52 to slide away from the closing bevel buckle 6. Since the second slider 52 is engaged with the first slider 51 to drive the synchronous movement of the first slider 51, the first slider 51 and the second slider 52 slide in the movable cavity 3 toward the end of the second mold core 2, so that the hot runner nozzle 7 is aligned and connected with the inlet of the cold runner 54, and the outlet of the cold runner 54 is aligned and connected with the mold cavity 4, so that the hot material enters the inlet of the cold runner 54 from the hot runner nozzle 7 and flows out from the outlet of the cold runner 54 to the mold cavity 4, and is condensed and formed in the mold cavity 4 to form a product, and the cold runner 54 is condensed and formed to form a material head. After the product pressure holding is completed, the first mold core 1 and the second mold core 2 are opened, and the opening and closing bevel buckle 6 is inserted into the movable cavity 3 from the second mold core 2 to pull the two second sliders 52 on both sides toward the opening and closing bevel buckle 6. The first slider 51 and the second slider 52 slide toward the middle of the second mold core 2, causing the cold runner 54 to be staggered with the hot runner nozzle 7 and the mold cavity 4, so that the first slider 51 moves to block the hot runner nozzle 7, and the cold runner 54 moves to pull the material head away from the product, that is, the movable slider assembly 5 blocks the hot runner nozzle 7 to prevent the hot runner nozzle 7 from dripping glue. At the same time, the movable slider assembly 5 slides to separate the cold runner 54 outlet and the product, and achieves a clean and tidy product cross-section without connecting materials. The die-cutting assembly 5 can meet the needs of a variety of products that require separation of the material port in the mold. It does not require adding too much mold structure or product structure to achieve the separation of the material port and the product after the mold is opened, which facilitates the smooth progress of subsequent processes and improves production efficiency.

[0052] See also Figure 6and Figure 7 The opening and closing oblique buckle 6 is arranged in a "Y" shape, and an opening groove 65 is provided on the front side and the rear side of one end of the opening and closing oblique buckle 6. The left groove wall 61 and the right groove wall 62 of the opening groove 65 are respectively slidably engaged with the ends of the second sliders 52 of the two movable slider assemblies 5, and the left groove wall 61 and the right groove wall 62 are symmetrically arranged along the movement direction of the opening and closing oblique buckle 6.

[0053] See also Figure 4 、 Figure 5 and Figure 7 The end of the second slider 52 is provided with a sliding hole 521, and the front side wall of the sliding hole 521 is provided with an opening 522. The side wall of the opening slot 65 is locked in the opening 522. The left slot wall 61 and the right slot wall 62 respectively pass through the openings 522 of the two second sliders 52 to slide and engage with the sliding hole 521, so that the front side walls of the sliding holes 521 of the two second sliders 52 are pulled toward the opening and closing oblique buckle 6 during mold opening. Specifically, the rear side wall of the sliding hole 521 has a guide bevel 5211, and the left slot wall 61 and the right slot wall 62 each have a guide bevel 63 and a vertical portion 64 connected to each other. The guide bevel 63 and the vertical portion 64 are sequentially slidably abutted against the guide bevel 5211, so that the movable slider assembly 5 is pushed away from the closing oblique buckle 6 during mold closing. When closing the mold, the opening and closing bevel buckle 6 retracts from the active cavity 3 to the second mold core 2 to push the second slider 52 to slide away from the closing bevel buckle 6, and the second sliders 52 located on both sides of the opening and closing bevel buckle 6 move oppositely along the guide slope 5211, so that the inlet of the cold runner 54 is connected with the hot runner nozzle 7 and the outlet of the cold runner 54 is aligned with the mold cavity 4; when opening the mold, the opening and closing bevel buckle 6 is inserted into the active cavity 3, and the guide slope 63 and the vertical portion 64 of the second slider 52 located on both sides of the opening and closing bevel buckle 6 slide and abut against the guide slope 5211 in turn, thereby synchronously driving the first slider 51 and the cold runner 54 to move closer to the opening and closing bevel buckle 6, so that the hot runner nozzle 7 is closed and the material head is separated from the product.

[0054] See also Figure 4 and Figure 8 The injection molding apparatus further includes a plurality of first inlets 22 and a plurality of second inlets 24. The plurality of first inlets 22 are disposed within the second mold core 2 and are distributed on both sides of the second slider 52. The first inlets 22 define a molding groove 221, which is covered by the first mold core 1 to form a closed mold cavity 4. The number of mold cavities 4 and first inlets 22 is equal to the number of cold runner 54 outlets. The distance between two adjacent first inlets 22 on the same side of the active cavity 3 is equal to the distance between adjacent outlets on the same side of the cold runner 54.

[0055] The second mold core 2 is equipped with wear-resistant blocks 23. These blocks are located within the movable cavity 3 and correspond to the second sliders 52 one by one. The second sliders 52 are located between the first slider 51 and the wear-resistant blocks 23 and are slidably connected to the wear-resistant blocks 23. The wear-resistant blocks 23 isolate the second sliders 52 from friction with the second mold core 2, reducing damage to the second mold core 2 caused by the movable slider assembly 5. Multiple second inserts 24 are embedded within the wear-resistant blocks 23 and are located corresponding to the cold runners 54.

[0056] See also Figure 8 To facilitate the removal of products and sprues, the injection molding equipment includes multiple product ejectors 8 and multiple sprue ejectors 9. The multiple product ejectors 8 sequentially penetrate the second mold core 2 and the first insert 22 to eject multiple products, respectively. The multiple sprue ejectors 9 sequentially penetrate the second mold core 2 and the second insert 24 to eject multiple sprues, respectively. In this embodiment, the product ejectors 8 and sprue ejectors 9 are driven by corresponding drive members to eject the product or sprue. The product ejectors 8 slide in conjunction with the first insert 22 and are positioned directly below the mold cavity 4 for ejecting the product. The multiple second inserts 24 are positioned on the wear-resistant block 23 and are each positioned corresponding to the cold runner 54. The sprue ejectors 9 also slide in conjunction with the second inserts 24 to eject the sprue.

[0057] Specifically, after the first mold core 1 and the second mold core 2 are opened, the product ejector pin 8, driven by the corresponding driving member, moves toward the first mold core 1. The product ejector pin 8 is slidably connected to the first insert 22. One end of the product ejector pin 8 contacts the pressure-maintained product and ejects it, facilitating subsequent grasping of the product by the robot. The sprue ejector pin 9, driven by the corresponding driving member, moves toward the first mold core 1. The sprue ejector pin 9 is slidably connected to the second insert 24. One end of the sprue ejector pin 9 contacts the sprue. Multiple sprue ejector pins 9 cooperate to eject the sprue, facilitating subsequent grasping of the sprue by the robot.

[0058] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An injection molding device with automatic in-mold cutting, characterized in that: include: A first mold core (1) and a second mold core (2), wherein the first mold core (1) is provided with a movable cavity (3), and the first mold core (1) and the second mold core (2) form a mold cavity (4); A movable slider assembly (5) is inserted between the first mold core (1) and the second mold core (2), and the movable slider assembly (5) is provided with a cold runner (54), and the cold runner (54) is movably connected to the mold cavity (4); The opening and closing oblique buckle (6) passes through the second mold core (2) and is movable and retractable in the movable cavity (3), and is slidably engaged with the end of the movable slider assembly (5), so that when the mold is closed, the second mold core (2) is withdrawn from the movable cavity (3) to push the movable slider assembly (5) to slide away from the opening and closing oblique buckle (6), thereby connecting the cold runner (54) with the mold cavity (4) to form the slug and the product respectively; when the mold is opened, the second mold core (2) is movably inserted into the movable cavity (3) to pull the movable slider assembly (5) toward the opening and closing oblique buckle (6) so that the slug is pulled away from the product.

2. The automatic in-mold cutting injection molding equipment according to claim 1, characterized in that: Two groups of movable slider assemblies (5) are provided, and the ends of the two groups of movable slider assemblies (5) are respectively slidably engaged with the two sides of the opening and closing oblique buckle (6).

3. The automatic in-mold cutting injection molding equipment according to claim 2, characterized in that: It also includes a hot runner nozzle (7), which is inserted into the first mold core (1). The movable slider assembly (5) includes: A first slider (51) is slidably disposed on the first mold core (1), the first slider (51) being provided with a first cold flow groove (511) and a clamping groove (513) that are spaced apart, the first cold flow groove (511) being in communication with the hot runner nozzle (7); The second slider (52) is provided on the second mold core (2). The second slider (52) is provided with a second cold flow groove (523). The second slider (52) has a protrusion (524). The protrusion (524) is inserted into the clamping groove (513) when the mold is closed. The first cold flow groove (511) and the second cold flow groove (523) are connected to form the cold runner (54) when the mold is closed. The two sides of the opening and closing oblique buckle (6) are respectively slidably clamped with the ends of the second sliders (52) in the two groups of the movable slider assemblies (5).

4. The automatic in-mold cutting injection molding equipment according to claim 3, characterized in that: An opening slot (65) is provided on the front side and the rear side of one end of the opening and closing oblique buckle (6), and the left slot wall (61) and the right slot wall (62) of the opening slot (65) are respectively slidably engaged with the ends of the second sliders (52) of the two movable slider assemblies (5).

5. The automatic in-mold cutting injection molding equipment according to claim 4, characterized in that: A sliding through hole (521) is formed at the end of the second sliding block (52), and an opening (522) is formed on the front side wall of the sliding through hole (521); The left groove wall (61) and the right groove wall (62) are respectively slidably engaged with the sliding through hole (521) through the opening (522) of the second slider (52) in the two sets of the movable slider assemblies (5), so as to pull the front side wall of the sliding through hole (521) toward the opening and closing oblique buckle (6) when the mold is opened; The left side wall of the sliding through hole (521) has a guiding inclined surface (5211), and the left groove wall (61) and the right groove wall (62) both have mutually connected guiding inclined portions (63) and vertical portions (64). The guiding inclined portions (63) and vertical portions (64) are in sliding contact with the guiding inclined surface (5211) in sequence, so as to slide and push the movable slider assembly (5) in a direction away from the opening and closing inclined buckle (6) when the mold is closed.

6. The automatic in-mold cutting injection molding equipment according to claim 5, characterized in that: It also includes a positioning block (21), which is located at one end of the second slider (52) away from the opening and closing oblique buckle (6) to limit the distance the second slider (52) moves away from the opening and closing oblique buckle (6).

7. The automatic in-mold cutting injection molding equipment according to claim 3, characterized in that: The invention also includes a limit block (11), the first slider (51) is provided with a sliding groove (514), the limit block (11) is provided on the first mold core (1), and the limit block (11) is slidably connected to the sliding groove (514) to limit the distance that the first slider (51) moves toward the opening and closing oblique buckle (6).

8. The automatic in-mold cutting injection molding equipment according to claim 3, characterized in that: The invention also includes a plurality of first inserts (22), which are arranged on the second mold core (2) and distributed on both sides of the second slider (52), and the first inserts (22) are provided with a molding groove (221), and the first mold core (1) covers the molding groove (221) to form the closed mold cavity (4).

9. The automatic in-mold cutting injection molding equipment according to claim 8, characterized in that: Also includes: A wear-resistant block (23) is provided on the second mold core (2); the second slider (52) is located between the wear-resistant block (23) and the first slider (51) and is slidably connected to the wear-resistant block (23); A plurality of second inserts (24) are embedded in the wear-resistant block (23).

10. The automatic in-mold cutting injection molding equipment according to claim 9, characterized in that: Also includes: A plurality of product ejector pins (8) are sequentially passed through the second mold core (2) and the first insert (22) to eject a plurality of products respectively; A plurality of material head ejector pins (9) are sequentially passed through the second mold core (2) and the second insert (24) to eject a plurality of material heads respectively.

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