Injection mold assembly and injection molding machine

Abstract

The utility model relates to an injection mold assembly and an injection molding machine, and relates to the technical field of injection molding. The injection mold assembly comprises a first mold and a second mold, and the first mold and the second mold can move relatively so that a mold cavity can be defined when the first mold and the second mold are attached to each other; the forming part is provided with a forming part for forming a product structure; and the transmission assembly is connected with the forming piece, and the transmission assembly is configured to drive the forming piece to do spiral motion relative to the first mold when the first mold and the second mold move relatively, so that the forming part extends into the mold cavity when the first mold and the second mold are attached, and the forming part extends into the mold cavity when the first mold and the second mold are separated. And the forming part is screwed out of the product. And when the mold is separated, the transmission mechanism drives the forming part to spirally move, so that the product is smoothly separated from the forming part. And compared with manual screwing of the product, the dismounting efficiency and safety of the product are improved.

Description

Technical Field

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

[0002] To create the threaded structure of an injection-molded product, a threaded component needs to be inserted into the mold cavity. After the molten material is injected into the mold cavity, the molten material, constrained by the threaded component, causes the injection-molded product to form a threaded structure. Whether the threaded structure is internal or external, the injection-molded product will be threadedly connected to the threaded component, making product removal more difficult.

[0003] In related technologies, in order to remove injection-molded products with threaded structures from the injection molding machine, it is necessary to manually twist the product to separate it from the mold. This not only reduces the efficiency of product removal but also requires manual removal, which poses certain safety risks. Utility Model Content

[0004] This utility model provides an injection mold assembly and an injection molding machine to improve the removal efficiency of threaded injection molded products after injection molding.

[0005] In a first aspect, this utility model provides an injection mold assembly, comprising:

[0006] A first mold and a second mold, the first mold and the second mold being movable relative to each other to form a mold cavity when the first mold and the second mold are in contact; a molded part having a molding portion for forming a product structure; and a transmission assembly connected to the molded part, the transmission assembly being configured to drive the molded part to make a helical motion relative to the first mold when the first mold and the second mold are in contact, such that the molding portion extends into the mold cavity when the first mold and the second mold are in contact, and the molding portion spins out from the product when the first mold and the second mold are separated.

[0007] In one embodiment, the transmission assembly includes a helical guide and a transmission mechanism. The helical guide is fixedly connected to the first mold and threadedly connected to the molded part. The transmission mechanism is connected to the molded part and is configured to drive the molded part to rotate relative to the helical guide when the first mold and the second mold are displaced relative to each other, so that the molded part performs a helical motion relative to the first mold under the action of the helical guide.

[0008] In one embodiment, the forming part has a threaded structure, the forming part is provided with a first transmission thread, the first transmission thread is threadedly connected to the helical guide, the axis of the first transmission thread is collinear with the axis of the forming part, the helical direction of the first transmission thread is the same as the helical direction of the forming part, and the pitch of the first transmission thread is equal to the pitch of the forming part.

[0009] In one embodiment, the transmission mechanism includes a first transmission component and a second transmission component. The first transmission component is fixed to the second mold and is threadedly connected to the second transmission component. The second transmission component is rotatably mounted on the first mold. The second transmission component is directly connected to the molded part or connected to the molded part through a transmission component.

[0010] When the first mold and the second mold are displaced relative to each other, the second mold drives the second transmission component away from the first mold, causing the second transmission component to rotate and drive the molded part to rotate relative to the spiral guide component.

[0011] In one embodiment, the transmission component includes a transmission gear rotatably mounted on the first mold, and the second transmission component and the molded component respectively mesh with the transmission gear.

[0012] In one embodiment, the second mold includes a base, a first sub-module, and a second sub-module;

[0013] The first submodule is used to form the first outer side of the product, and the second module is used to form the second outer side of the product. The first outer side and the second outer side are two adjacent surfaces of the product.

[0014] The first submodule is slidably mounted on the base, and the first submodule is connected to a first elastic member that abuts against the base on the side away from the first mold. The first elastic member is configured such that when the first mold and the second mold are separated, the first elastic member drives the first submodule away from the base and away from the second submodule.

[0015] In one embodiment, the base has a first slide groove, the first sub-module includes a first slider slidably mounted in the first slide groove, the first slide groove has a first end close to the first mold and a second end away from the first mold, and the first slide groove gradually approaches the second sub-module from the first end to the second end.

[0016] In one embodiment, the second submodule is slidably mounted on the base, and the second submodule is connected to a second elastic member that abuts against the base on the side away from the first mold. The second elastic member is configured to drive the second submodule away from the base and away from the first submodule when the first mold and the second mold are separated.

[0017] In one embodiment, a limiting block is mounted on the base, the limiting block being configured to abut against the side of the first submodule away from the second submodule when the first elastic member drives the first submodule away from the base.

[0018] In one embodiment, the first mold includes a protrusion, the first mold being configured such that, when forming a cavity with the second mold, the protrusion extends into the cavity, such that when the molded part is unscrewed, the product abuts against the protrusion.

[0019] Secondly, this utility model also provides an injection molding machine, which includes the above-mentioned injection mold assembly.

[0020] Compared with the prior art, the advantages of this utility model are that, since the transmission component can drive the molded part to make a spiral motion relative to the first mold when the first mold and the second mold separate, the molding part can be inserted into the mold cavity to form the finished product when molding is required, and the product can be unscrewed after injection molding. Compared with manually unscrewing the product, the product removal efficiency is improved and the safety risks during the product removal process are reduced. Attached Figure Description

[0021] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the injection mold assembly in an embodiment of this utility model;

[0023] Figure 2 This is an exploded structural diagram of the injection mold assembly in an embodiment of this utility model;

[0024] Figure 3 This is an exploded structural diagram of the injection mold assembly in an embodiment of this utility model;

[0025] Figure 4 This is a front view schematic diagram of each state when the injection mold assembly and the product spiral separate in an embodiment of this utility model;

[0026] Figure 5 This is a partial cross-sectional schematic diagram of the injection mold assembly in the injection molding process according to an embodiment of this utility model;

[0027] Figure 6 This is a partial cross-sectional view of the injection mold assembly in an embodiment of this utility model when the molded part is initially separated from the product;

[0028] Figure 7 This is a partial cross-sectional view of the injection mold assembly in an embodiment of this utility model when the molded part and the product are completely separated.

[0029] Figure label:

[0030] 100. First mold; 110. Mounting base;

[0031] 120. First insert; 121. Protrusion; 130. Second insert;

[0032] 200, Second mold; 210, Base; 220, First sub-module; 221, First slider; 222, First limiting groove; 230, Second sub-module; 231, Second slider; 232, Second limiting groove; 240, Limiting block; 250, Locking block; 261, First elastic element; 262, Second elastic element;

[0033] 300. Spiral guide component;

[0034] 400. Molded part; 401. Molding section; 402. First transmission thread;

[0035] 500. Transmission mechanism; 510. First transmission component; 511. Second transmission thread; 520. Second transmission component; 530. Transmission gear;

[0036] 600. Injection molded connector;

[0037] 700. Products. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings.

[0039] See Figures 1 to 3 As shown, this utility model provides an injection mold assembly, which includes:

[0040] The system comprises a first mold 100, a second mold 200, a molded part 400, and a transmission assembly. The first mold 100 is movable relative to the second mold 200. When the first mold 100 and the second mold 200 are in contact, the transmission assembly causes the molding portion 401 of the molded part to screw into the mold cavity, allowing the molten material entering the mold cavity to envelop the molding portion 401, forming the threaded structure of the product 700. When the first mold 100 and the second mold 200 separate, the transmission assembly drives the molded part 400 to spiral in the opposite direction, causing the molding portion of the molded part 400 to unscrew from the product 700. This enables automatic separation of the product 700 and the molded part 400 after injection molding. Compared to manually unscrewing the product 700, this significantly improves the efficiency of removing the product 700 after injection molding, and also enhances the safety of the removal process due to reduced manual operation.

[0041] It is understood that the injection mold assembly provided in this application can not only form a product 700 with a threaded structure, but also a product without a threaded structure. By using a spiral forming method, the molded part can be removed from the product 700, reducing the difficulty of removing the product 700.

[0042] In some implementations, the transmission assembly includes a helical guide 300 and a transmission mechanism 500. The helical guide 300 is fixedly connected to the first mold 100 and threadedly connected to the molded part. The transmission mechanism 500 is connected to the molded part to drive the molded part 400 to rotate relative to the helical guide when the first mold and the second mold are displaced relative to each other, so that the molded part 400 performs a helical motion relative to the first mold 100 under the action of the helical guide 300.

[0043] In other words, the linear motion between the first mold 100 and the second mold 200 is converted into the rotational motion of the molded part 400 through the transmission mechanism 500. The molded part 400 is threadedly connected to the spiral guide 300 fixedly connected to the first mold 100. When the molded part 400 rotates, it will make a spiral motion relative to the first mold 100 under the thread drive of the spiral guide 300, so as to extend the molding part 401 into the mold cavity during injection molding and to spin the molding part 401 out of the product 700 when the mold is separated.

[0044] It is understandable that in some implementations, the helical guide 300 may not be provided. Instead, a combination of a transmission mechanism 500 and a linear transmission device can be used. The linear transmission device drives the molded part 400 to move linearly relative to the first mold 100 when the first mold 100 separates from the second mold 200. The linear transmission device drives the molded part 400 to move linearly relative to the first mold 100, while simultaneously using the transmission mechanism 500 to drive the molded part 400 to rotate relative to the first mold, thus achieving a helical motion of the molded part 400 relative to the first mold 100. The linear transmission device can be a pulley system, such that when the relative displacement between the first mold 100 and the second mold 200 is x, the pulley system causes the displacement of the molded part 400 relative to the second mold 200 to be kx, where k > 1, so that the relative displacement of the molded part 400 relative to the first mold 100 is (k-1)*x.

[0045] Alternatively, the linear transmission device may include a first gear rotatably mounted on the first mold 100, a first rack fixedly disposed on the second mold 200, and a second rack slidably mounted on the first mold 100, with the molded part rotatably mounted on the second rack. By meshing the first rack and the second rack, when the first mold 100 and the second mold 200 move relative to each other, the first rack drives the first gear to rotate relative to the first mold 100, while simultaneously driving the second rack slidably mounted on the first mold 100 to move linearly, thereby achieving linear movement of the molded part 400 relative to the first mold 100. The displacement direction and distance of the second rack relative to the first mold 100 can be adjusted by adjusting the number of gears and the gear ratio between the first and second racks. Combined with the rotational drive of the transmission mechanism 500, the molded part 400 moves linearly relative to the first mold 100 while simultaneously rotating relative to the first mold 100, forming a helical motion of the molded part 400 relative to the first mold 100.

[0046] To more clearly illustrate the connection between the molded part 400 and the transmission mechanism 500, the mounting base 110 of the first mold 100 (visible) is shown in the attached figure. Figure 4 )hide.

[0047] In some implementations, the forming part 401 has a threaded structure, and the forming part 400 is provided with a first transmission thread 402. The first transmission thread 402 is threadedly connected to the spiral guide 300. The axis of the first transmission thread 402 is collinear with the axis of the forming part 401. The helical direction of the first transmission thread 402 is the same as the helical direction of the forming part 401, and the pitch of the first transmission thread 402 is equal to the pitch of the forming part 401.

[0048] Since the axis of the molding part 401 is collinear with the axis of the first transmission thread 402, when the transmission mechanism 500 drives the molding part 400 to move helically relative to the axis of the first transmission thread 402, the molding part 400 will also move helically relative to the axis of the molding part 401. Because the helical direction of the molding part 401 is the same as the helical direction of the first transmission thread 402, and the pitch of the molding part 401 is equal to the pitch of the first transmission thread 402, when the molding part 400 moves helically relative to the helical guide 300 fixed to the first mold 100, the molding part 401 can move helically along the thread groove of the product 700, reducing the clamping force between the molding part 401 and the thread of the product 700, and avoiding damage to the thread of the product 700 when separating the product 700.

[0049] In this application, the molded part 400 can be driven to rotate relative to the spiral guide 300 after injection molding via the transmission mechanism 500, so that the molded part 401 automatically separates from the product 700 after injection molding. This eliminates the need for manual separation of the product 700, improving the efficiency of removing the product 700 and avoiding the risk of injury during manual removal.

[0050] The helical radii of the forming part 401 and the first transmission thread 402 can be the same or different. For example, in the molded part 400 shown in the figure, the helical radius of the forming part 401 is smaller than the helical radius of the first transmission thread 402. However, since the helical directions of the forming part 401 and the first transmission thread 402 are the same, their axes are collinear, and their pitches are the same, when the transmission mechanism 500 drives the molded part 400 to rotate one revolution, the axial displacement of the molded part 400 relative to the axis of the forming part 401 is equal to both the pitch of the forming part 401 and the pitch of the first transmission thread 402, so that the threads of the product 700 will not be damaged during the rotation of the molded part 400.

[0051] It should be noted that although both the forming part 401 and the first transmission thread 402 shown in the figure are external threads, in other implementations, one of the forming part 401 and the first transmission thread 402 can be set as an external thread structure, and the other as an internal thread structure. Alternatively, both the forming part 401 and the first transmission thread 402 can be set as internal thread structures.

[0052] It is understood that in some implementations, a threaded structure can be provided along the entire axial direction of the molded part 400, with one section of the threaded structure serving as the molding part 401 and the other section serving as the first transmission thread 402. In this application, the molding part 401 and the first transmission thread 402 are spaced apart along the axial direction of the molded part 400.

[0053] In some implementations, the transmission mechanism 500 is a mechanism composed of transmission components, capable of converting displacement changes between the first mold 100 and the second mold 200 into rotation of the molded part 400, while the transmission mechanism 500 itself does not have a power source. In other implementations, a device with a power source can be directly used as the transmission mechanism 500, such as a transmission mechanism 500 with a motor, which directly drives the rotation of the molded part 400. The motor can be electrically connected to a control device, so that while controlling the injection mold assembly to form the mold cavity, the control device controls the rotation of the molded part 400, screwing the molding portion 401 of the molded part 400 into the mold cavity, so that after the molten material is injected into the mold cavity, the molten material forms a threaded structure under the constraint of the molding portion 401. After injection molding is completed, the control device can also directly control the reverse rotation of the molded part 400 to screw the molded part 400 out of the mold cavity, achieving separation of the molded part 400 from the product 700.

[0054] For details on the structure of the injection mold assembly when the molded part 400 is unscrewed from the mold cavity, please refer to [link / reference needed]. Figure 1 and Figure 4 As shown, Figure 4 The image shows state diagrams of the injection mold assembly in three different states. The upper image shows the state during product injection molding, while the middle image shows the state after product molding, with the first mold moved away from the second mold. Figure 4 In the central image, the molded part 400 moves spirally relative to the first mold 100 toward the side away from the second mold 200, thereby achieving spiral separation from the product 700. Until... Figure 4 In the state shown in the lower image, the threaded structure of product 700 has been completely separated from the molding part 401 of molded part 400, allowing product 700 to be easily removed from the first mold 100. That is... Figure 4 The upper middle image shows the state of the injection mold assembly and Figure 5 The state of the injection mold components shown is consistent. Figure 4 The state of the injection mold assembly shown in the middle image is... Figure 6 The state of the injection mold components shown is consistent, while Figure 4 The lower middle image shows the state of the injection mold assembly and Figure 7 The state of the injection mold components shown is consistent.

[0055] See Figure 1 and Figure 5As shown, in some implementations, the transmission mechanism 500 includes a cooperating first transmission member 510 and a second transmission member 520. The first transmission member 510 and the second transmission member 520 can convert linear movement into rotational movement. The first transmission member 510 is fixedly connected to the second mold 200, and the second transmission member 520 is rotatably mounted on the first mold 100. The second transmission member 520 is directly rotatably connected to the molding part 400 or indirectly rotatably connected to the molding part 400 through a transmission component.

[0056] In other words, when the first mold 100 and the second mold 200 move linearly, the first transmission member 510 fixedly connected to the second mold 200 will also move linearly with the second transmission member 520 rotatably mounted on the first mold 100, and the second transmission member 520 will rotate under the action of the first transmission member 510. The molded part 400 is driven to rotate through the second transmission member 520.

[0057] Among them, see Figures 1 to 3 As shown, the first transmission member 510 is a stud structure with a second transmission thread 511, while the second transmission member 520 is a sleeve structure sleeved on the first transmission member 510 and threadedly connected to the second transmission thread 511. When the second transmission member 520 moves linearly relative to the first transmission member 510, it will also rotate axially relative to the second transmission thread 511 under the action of the second transmission thread 511. This converts the linear movement between the molds into the rotational motion of the second transmission member 520 in the transmission mechanism 500, thereby achieving rotational drive of the molded part 400.

[0058] It is understandable that, in order to drive the rotation of the molding part 400 by the rotation of the second transmission component 520, the rotation can be transmitted through various transmission components. For example, the second transmission component 520 can be connected to the molding part 400 by a belt or chain so that the molding part 400 can rotate synchronously during the rotation of the second transmission component 520, so that the molding part 401 can be screwed into the mold cavity or screwed out of the mold cavity.

[0059] Or, such as Figure 2 and Figure 3 As shown, a gear structure is integrated on the second transmission component 520 and the molding component 400. A transmission gear 530 is rotatably connected to the second mold 200. By engaging one side of the transmission gear 530 with the gear structure on the second transmission component 520 and the other side of the transmission gear 530 with the gear structure on the molding component 400, the rotation of the molding component 400 is achieved when the second transmission component 520 rotates. Compared with belt or chain drives, gear drives are not only more compact but also have a more stable transmission ratio, avoiding the difficulty in unscrewing the molding component 400 from the product 700 due to slippage.

[0060] Understandably, because the two meshing gear structures are tangentially meshed, their rotation directions are opposite. Therefore, the rotation direction of the molding part 400 can be adjusted according to the number of meshing gears. Of course, the rotational speed of the molding part 400 can also be controlled by controlling the transmission ratio between the gear structures.

[0061] In addition to adjusting the rotation direction of the molding part 400 by adjusting the number of meshing gears, the spiral direction of the molding part 400 can also be controlled by controlling the rotation direction of the second transmission thread 511. For example... Figure 1 and Figure 2 As shown, the second transmission thread 511 is a left-hand thread. When the second mold 200 drives the second transmission component 520 closer to the first mold 100, the second transmission component 520 will rotate clockwise along the second transmission thread 511. At this time, after the gears on both sides reverse direction, the molding component 400 will also be driven to rotate clockwise. Under the action of the left-hand first transmission thread 402, and under the action of the spiral guide component 300 which is relatively fixed to the first mold 100, the molding component 400 is driven to extend out of the first mold 100 and into the mold cavity along the axis of the first transmission thread 402. If the number of gears meshing between the second transmission component 520 and the molding component 400 is the same, when the direction of rotation of the second transmission thread 511 is adjusted to the right-hand direction, it will cause the second transmission component 520 to drive the molding component 400 to rotate counterclockwise when the first mold 100 and the second mold 200 are close together, and the molding component 400 will be taken into the first mold 100 from the mold cavity.

[0062] In the figure, the second transmission component 520 and the transmission gear 530 are rotatably mounted inside the first mold 100, and a limit mechanism is provided inside the first mold 100 to restrict the axial movement of the second transmission component 520 and the transmission gear 530 relative to the first mold 100.

[0063] In the diagram, the axis of the second transmission thread 511 is in the same direction as the displacement direction of the moving mold, and the axis of the forming part 401 is also in the same direction as the displacement direction of the moving mold. This allows for the transmission of rotational torque using gear meshing without adjusting the direction of the rotational axis. Conventional spur gears or helical gears can be used to achieve rotational transmission between the second transmission component 520 and the forming part 400. In other implementations, when there is an angle between the axis of the forming part 401 and the first direction of the moving mold, a bevel gear structure can be used to adjust the axis of rotation, thereby adjusting the axis of rotation to be parallel to the axis of the forming part 401, driving the forming part 400 to rotate around the axis of the forming part 401.

[0064] See Figure 4As shown, in some implementations, the tooth thickness of the transmission gear 530 is greater than the tooth thickness of the gear integrated at the molded part 400, so that the molded part 400 always maintains meshing with the transmission gear 530 during the up-and-down movement of the molded part 400 relative to the transmission gear 530.

[0065] The above describes the case where the first transmission member 510 and the second transmission member 520 are driven by a screw. In other implementations, the transmission method between the first transmission member 510 and the second transmission member 520 can also be a gear and rack drive, or a crank-slider drive. All of these methods can convert the linear movement of the moving mold into the rotational motion of a single component.

[0066] For example, the first transmission member 510 can be made into a rack structure, and the second transmission member 520 can be configured as a gear structure that meshes with the rack of the first transmission member 510. When the distance between the first mold 100 and the second mold 200 increases, the second transmission member 520 will roll along the rack structure of the first transmission member 510, thereby realizing the rotation of the second transmission member 520. If the axis of the second transmission member 520 is not parallel to the axis of the forming part 401, a bevel gear can be provided between the second transmission member 520 and the forming part 400 to adjust the direction of the rotation axis.

[0067] Compared to directly driving the molded part 400 to rotate using a motor, converting linear movement into rotational driving force for the molded part 400 through a transmission component not only reduces the cost of the injection mold assembly but also allows for timely response to changes in the distance between the first mold 100 and the second mold 200. This enables the molding part 401 to be screwed into the mold cavity when the two molds are close together, and the molded part 400 to be driven to rotate in the opposite direction when the two molds are far apart, thus screwing the molding part 401 out of the product 700. Compared to adding a control mechanism, this reduces the difficulty of control and makes the spiral separation process more stable.

[0068] See Figures 1 to 4 As shown, in some implementations, the first mold 100 is a moving mold and the second mold 200 is a fixed mold. In other implementations, the first mold 100, with the helical guide 300 fixed, can also be a fixed mold, and the second mold 200 a moving mold. The moving mold and the fixed mold can be arranged vertically, so that the first mold 100 and the second mold 200 are fitted together to form a mold cavity by driving the moving mold to move vertically. Alternatively, the moving mold and the fixed mold can be arranged horizontally, so that the first mold 100 and the second mold 200 are fitted together to form a mold cavity by driving the moving mold to move horizontally closer to the fixed mold.

[0069] In some implementations, the second mold 200 includes a base 210, a first sub-module 220, and a second sub-module 230. The first sub-module 220 is used to form the first outer side of the product 700, and the second sub-module 230 is used to form the second outer side of the product 700. The first outer side and the second outer side are two adjacent surfaces of the product 700. The first sub-module 220 is slidably mounted on the base 210, and the first sub-module 220 is connected to a first elastic member 261 that abuts against the base 210 on the side away from the first mold 100. The first elastic member 261 is configured to drive the first sub-module 220 away from the base 210 and away from the second sub-module 230 when the first mold 100 and the second mold 200 are separated.

[0070] The first sub-module 220 and the second sub-module 230 respectively form different sides of the product 700. When the first mold 100 and the second mold 200 are separated, the first sub-module 220 is driven to separate from the second sub-module 230, so that the product 700 can detach from the first sub-module 220. This avoids the product 700 being unable to move with the molded part 400 due to the surface restriction of the first sub-module 220, thus preventing surface damage to the product 700.

[0071] In the diagram, since the first elastic element 261 is located on the side of the first sub-module 220 away from the first mold 100, during injection molding, the first mold 100 moves the first sub-module 220 of the second mold 200 toward the side closer to the base 210, thus pressing the first elastic element 261. The elastic force of the first elastic element 261 drives the first sub-module 220 to move, allowing the first mold 100 to move away from the second mold 200 while simultaneously moving the first sub-module 220 away, thus separating the product 700 from the first sub-module 220. This reduces the difficulty of removing the product 700.

[0072] In some implementations, the base 210 has a first slide groove, and the first sub-module includes a first slider 221 slidably mounted in the first slide groove. The first slide groove has a first end close to the first mold 100 and a second end away from the first mold 100. The first slide groove gradually approaches the second sub-module 230 from the first end to the second end. That is, the first slide groove is inclined. When the first elastic member 261 drives the first sub-module 220 to move, the first sub-module 220 will move along the first slide groove, thereby gradually moving from the second end of the first slide groove close to the second sub-module 230 to the first end of the first slide groove away from the second sub-module 230.

[0073] The sidewall of the first slider 221 is in contact with the sidewall of the first slide groove, so that the first slider 221 is always located in the first slide groove, thus preventing the first sub-module 220 from detaching from the first slide groove during its movement along the first slide groove.

[0074] See Figure 1 and Figure 2 As shown, a locking block 250 is installed on the base 210. The side wall of the locking block 250 and the side wall of the base 210 form a first sliding groove. Two locking blocks 250 are installed on the base 210, thus forming two first sliding grooves on the base 210. It can be understood that the two first sliding grooves formed on the same base 210 are parallel to each other. The first sub-module 220 is provided with a first slider 221 at each end in the length direction. Each first slider 221 is installed in the first sliding groove. The movement trajectory of the first sub-module 220 is restricted by the two first sliding grooves, so that the first sub-module 220 can gradually move away from the second sub-module 230 under the drive of the first elastic element 261, thereby improving the stability of the first sub-module 220 during the sliding process.

[0075] See Figure 1 and Figure 2 As shown, in some implementations, the second submodule 230 is slidably mounted on the base 210. The second submodule 230 is connected to a second elastic member 262 that abuts against the base 210 on the side away from the first mold 100. The second elastic member 262 is configured to drive the second submodule 230 away from the base 210 and away from the first submodule 220 when the first mold 100 and the second mold 200 are separated.

[0076] Furthermore, a second sliding groove is provided at the base 210, and a second slider 231 is provided at the end of the second sub-module 230. The second slider 231 extends into the second sliding groove to limit the sliding direction of the second sub-module 230.

[0077] In other words, when the first mold 100 and the second mold 200 separate, not only does the first elastic body drive the first sub-module 220 to move away from the second sub-module 230, but the second elastic body also drives the second sub-module 230 to move away from the first sub-module 220, thereby rapidly increasing the distance between the first sub-module 220 and the second sub-module 230 so that the product 700 can separate from the first sub-module 220 and the second sub-module 230.

[0078] See Figure 2 and Figure 3 As shown, the first sub-module 220 has a right-angled trapezoidal cross-section, and the surface that fits into the second sub-module 230 is the straight side of the trapezoidal structure. The short side of the first sub-module 220 faces the first elastic member 261, while the long side faces the first mold 100. The inclined surface of the first sub-module 220 fits into the guide inclined surface of the base 210 so that when the first elastic member 261 extends, the first sub-module 220 slides along the guide inclined surface of the base 210, moving away from the second sub-module 230.

[0079] like Figure 2 , Figure 3 as well as Figure 4 As shown, at least two first elastic elements 261 are connected to the side of the first submodule 220 away from the first mold 100, and the two first elastic elements 261 are spaced apart, so that the first submodule 220 slides more stably when driven by the first elastic elements 261. It is understood that in other implementations, the number of first elastic elements 261 connected to the first submodule 220 can be appropriately adjusted, such as using three, four, or other numbers of first elastic elements 261. Similarly, according to... Figures 1 to 3 As can be seen from the above, in some implementations, the second submodule 230 is connected to two second elastic members 262 on the side away from the first mold 100. In other implementations, the number of second elastic members 262 connected to the second submodule 230 can be adjusted appropriately.

[0080] See Figures 1 to 4 As shown, in some implementations, a limiting block 240 is installed on the base 210. The limiting block 240 is configured to abut against the side of the first sub-module 220 away from the second sub-module 230 when the first elastic member 261 drives the first sub-module 220 away from the base 210.

[0081] In other words, by using the limiting block 240 installed on the base 210 to abut the side of the first sub-module away from the second sub-module, the first elastic element 261 is prevented from pushing the first sub-module too far away, thus limiting the position of the first sub-module 220.

[0082] See Figure 2 and Figure 3 In some implementations, a first limiting groove 222 is provided on the side of the first sub-module 220 away from the second sub-module 230, and the first limiting groove 222 extends along the elastic direction of the first elastic member 261. When the first sub-module 220 slides along the first sliding groove, the side of the first limiting groove 222 will gradually approach the side of the limiting block 240 until the side of the limiting block 240 abuts against the side of the first limiting groove 222, so that the first sub-module 220 slides to the limit position.

[0083] In order to prevent the limiting block 240 from affecting the fit between the first mold 100 and the second mold 200, a groove can be opened on the base 210 and the limiting block 240 can be housed in the groove, thereby preventing the limiting block 240 from protruding from the outer surface of the base 210 and contacting the first mold 100 and causing damage.

[0084] Similarly, a second limiting groove 232 is provided on the side of the second sub-module 230 away from the first sub-module 220, and a limiting block 240 is installed on the base 210 to limit the sliding displacement of the second sub-module 230. When the second elastic member 262 drives the second sub-module 230 to slide away from the base along the second slide groove, the side of the second limiting groove 232 will eventually abut against the limiting block 240, thereby preventing the second sub-module 230 from moving further away from the base 210.

[0085] See Figure 2 As shown, in some implementations, the first mold 100 includes a protrusion 121, which is configured to extend into the mold cavity when forming a mold cavity with the second mold 200, such that when the molded part 400 is unscrewed from the product 700, the product 700 abuts against the protrusion 121.

[0086] Since the protrusion 121 will be inserted into the mold cavity, it will be embedded in the product 700 when the product 700 is formed into the mold cavity. When the molded part 400 is unscrewed from the product 700, the molded part 400 undergoes relative displacement with respect to the protrusion 121 of the first mold 100. The product 700 will not move with the molded part 400 due to the constraint of the protrusion 121, thereby allowing the product 700 to separate from the first mold 100.

[0087] Among them, such as Figure 2 , Figure 3 as well as Figure 7 As shown, in some implementations, the first mold 100 includes a mounting base 110, on which a first insert 120 and a second insert 130 are mounted. The second insert 130 is inserted into the first insert 120, and the molded part 400 is inserted into the through hole of the second insert 130 and extends downward beyond the first insert 120. In use, by replacing the first insert 120 mounted on the second insert 130, different shapes of the upper end face of the product 700 can be formed. In the figure, a positioning cone surface is provided at the bottom end of the second insert 130, and a tapered hole is provided in the first insert 120. The positioning cone surface of the second insert 130 fits against the hole wall of the tapered hole of the first insert 120, thereby achieving axial positioning of the first insert 120 and the second insert 130.

[0088] See Figure 2 and Figure 3 As shown, in some implementations, the protrusion 121 surrounds the annular structure of the molding part 401, thereby enabling an annular groove to be formed at the end of the product 700 when the product 700 is formed.

[0089] In some implementations, the first mold 100 includes a movable mold plate body and a first insert 120 and a second insert 130, wherein

[0090] See Figure 4 and Figure 6 As shown, in some implementations, an injection joint 600 is also installed on the base 210. When the first mold 100 and the second mold 200 form a mold cavity, the injection joint 600 is connected to the mold cavity. Molten material is injected into the mold cavity through the injection joint 600. After the molten material solidifies in the mold cavity to form the product 700, the product 700 will wrap around the molding part 401 extending into the mold cavity, thereby forming the threaded structure of the product 700.

[0091] Secondly, this utility model also provides an injection molding machine, which includes any of the above-mentioned injection mold components. Using the injection molding machine provided in this application, the separation of the product 700 and the molded part 400 can be automatically completed after injection molding, avoiding manual removal of the product 700, thereby improving injection molding efficiency and safety.

[0092] The injection molding machine also includes a displacement mechanism, one of the first mold 100 and the second mold 200 is connected to the displacement mechanism so as to realize the displacement adjustment between the first mold 100 and the second mold 200 under the drive of the displacement mechanism.

[0093] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An injection mold assembly, characterized in that, It includes: A first mold and a second mold, which are movable relative to each other to form a mold cavity when the first mold and the second mold are in contact; A molded part having a molding section for forming the structure of a product; as well as A transmission assembly is connected to the molded part, and the transmission assembly is configured to drive the molded part to make a spiral motion relative to the first mold when the first mold and the second mold move relative to each other, such that when the first mold and the second mold are in contact, the molded part extends into the mold cavity, and when the first mold and the second mold are separated, the molded part is rotated out of the product; The transmission assembly includes a spiral guide and a transmission mechanism. The spiral guide is fixedly connected to the first mold and threadedly connected to the molded part. The transmission mechanism is connected to the molded part and is configured to drive the molded part to rotate relative to the spiral guide when the first mold and the second mold are relatively displaced, so that the molded part performs a spiral motion relative to the first mold under the action of the spiral guide.

2. The injection mold assembly according to claim 1, characterized in that, The forming part has a threaded structure. The forming part is provided with a first transmission thread. The first transmission thread is threadedly connected to the spiral guide. The axis of the first transmission thread is collinear with the axis of the forming part. The helical direction of the first transmission thread is the same as the helical direction of the forming part, and the pitch of the first transmission thread is equal to the pitch of the forming part.

3. The injection mold assembly according to claim 1, characterized in that, The transmission mechanism includes a first transmission component and a second transmission component. The first transmission component is fixed to the second mold and is threadedly connected to the second transmission component. The second transmission component is rotatably mounted on the first mold. The second transmission component is directly connected to the molded part or connected to the molded part through a transmission component. When the first mold and the second mold are displaced relative to each other, the second mold drives the second transmission component away from the first mold, causing the second transmission component to rotate and drive the molded part to rotate relative to the spiral guide component.

4. The injection mold assembly according to claim 3, characterized in that, The transmission component includes a transmission gear rotatably mounted on the first mold, and the second transmission component and the molded component respectively mesh with the transmission gear.

5. The injection mold assembly according to any one of claims 1-4, characterized in that, The second mold includes a base, a first sub-module, and a second sub-module; The first submodule is used to form the first outer side of the product, and the second submodule is used to form the second outer side of the product. The first outer side and the second outer side are two adjacent surfaces of the product. The first submodule is slidably mounted on the base, and the first submodule is connected to a first elastic member that abuts against the base on the side away from the first mold. The first elastic member is configured such that when the first mold and the second mold are separated, the first elastic member drives the first submodule away from the base and away from the second submodule.

6. The injection mold assembly according to claim 5, characterized in that, The base is provided with a first sliding groove, and the first sub-module includes a first slider that is slidably installed in the first sliding groove. The first sliding groove has a first end close to the first mold and a second end away from the first mold, and the first sliding groove gradually approaches the second sub-module from the first end to the second end.

7. The injection mold assembly according to claim 6, characterized in that, The second submodule is slidably mounted on the base. The second submodule is connected to a second elastic member that abuts against the base on the side away from the first mold. The second elastic member is configured to drive the second submodule away from the base and away from the first submodule when the first mold and the second mold are separated.

8. The injection mold assembly according to claim 6, characterized in that, A limiting block is installed on the base, and the limiting block is configured to abut against the side of the first sub-module away from the second sub-module when the first elastic element drives the first sub-module away from the base.

9. The injection mold assembly according to any one of claims 1-4, characterized in that, The first mold includes a protrusion, and the first mold is configured such that when forming a mold cavity with the second mold, the protrusion extends into the mold cavity, so that when the molded part is unscrewed, the product abuts against the protrusion.

10. An injection molding machine, characterized in that, It includes: The injection mold assembly according to any one of claims 1-9.

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