Angled core pulling mechanism and injection mold

Abstract

This utility model discloses a slanted core-pulling mechanism and an injection mold. The slanted core-pulling mechanism includes a driving structure, a transmission block, and multiple insert pins. The driving structure is connected to the transmission block and drives the transmission block to move linearly along the driving direction. The multiple insert pins are spaced apart on the surface of the transmission block opposite to the driving structure and extend along the driving direction, so that the free ends of the multiple insert pins synchronously extend into or exit the injection cavity as the transmission block moves. This utility model solves the problem of synchronous insertion of multiple nuts into the injection cavity and meets the processing requirements of an arc-shaped bottom shell.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a slanted core-pulling mechanism and an injection mold. Background Technology

[0002] LED curved screens consist of key structural components such as a curved base shell and a light panel. The curved base shell and light panel are typically connected using bolts and nuts. Therefore, the nuts must be stably installed on either the curved base shell or the light panel. Currently, the mainstream solution to improve the reliability of nut fixation is to insert the nut as an insert into the curved base shell during the injection molding process. This requires the injection mold to be equipped with a slanted core-pulling mechanism, through which the nut is inserted into the injection cavity. However, existing slanted core-pulling mechanisms suffer from synchronization errors in the insert pins. When multiple nuts need to be arranged on the curved base shell, it cannot guarantee that multiple threads are simultaneously inserted into the injection cavity, thus failing to meet the processing requirements of the curved base shell. Utility Model Content

[0003] The main purpose of this utility model is to provide a slanted core-pulling mechanism, which aims to solve the problem of simultaneous implantation of multiple nuts into the injection cavity and meet the processing requirements of the arc-shaped bottom shell.

[0004] To achieve the above objectives, the present invention proposes a slanted core-pulling mechanism, comprising: a driving structure, a transmission block, and a plurality of insert pins. The driving structure is connected to the transmission block and is used to drive the transmission block to move linearly along the driving direction. The plurality of insert pins are spaced apart on the surface of the transmission block opposite to the driving structure. The insert pins extend along the driving direction so that the free ends of the plurality of insert pins synchronously extend into or exit the injection cavity as the transmission block moves.

[0005] Optionally, the oblique core-pulling mechanism further includes a guide member extending along the driving direction, and the transmission block slidably connected to the guide member so that the transmission block slides along the guide member to drive the insert pin.

[0006] Optionally, the guide includes two guide rails spaced apart, and the transmission block is disposed between the two guide rails and slidably connected to the two guide rails, so that the transmission block slides between the two guide rails to drive the insert pin.

[0007] Optionally, the two ends of the transmission block facing away from each other are formed with notches and grooves. The transmission block is slidably connected to the guide rail through the notches and grooves, so that the transmission block slides along the guide rail under the action of the notches and grooves.

[0008] Optionally, the free end of the insert is formed with a mounting head, which is used to install the embedded part so that the embedded part is fixed in the injection cavity by injection molding.

[0009] Optionally, the transmission block has a plurality of grooves formed on the surface opposite to the drive structure, the plurality of grooves are arranged side by side on the surface of the transmission block, and the plurality of insert pins are slidably mounted on the transmission block through the grooves.

[0010] Optionally, the inclined core-pulling mechanism includes a connector, the surface of the transmission block is formed with a groove, the connector is installed in the groove, and the drive structure is connected to the transmission block through the connector.

[0011] Optionally, the connector includes a head and a rod, the head being held in the slot, the head and the rod being disposed back to back, and the rod passing through the slot and connected to the drive structure.

[0012] Optionally, the transmission block has a limiting block mounted on the surface of the insert pin. The limiting block is spaced apart from the insert pin and is used to abut against the outside to limit the insertion depth of the insert pin in the injection cavity.

[0013] This utility model also proposes an injection mold, including a mold body and the aforementioned inclined core-pulling mechanism, wherein the inclined core-pulling mechanism is installed on the mold body.

[0014] In this invention, a drive structure is connected to a transmission block, which in turn drives the transmission block to move linearly along the driving direction. Multiple insert pins are spaced apart on the surface of the transmission block opposite to the drive structure, extending along the driving direction. These insert pins act as extensions of the transmission block along the driving direction, inheriting the linear motion in that direction and ensuring synchronized linear movement of the multiple insert pins. Thus, the free ends of the multiple insert pins synchronously enter or exit the injection cavity. Each insert pin has a nut installed at its free end, thereby achieving synchronous implantation of multiple nuts into the injection cavity. This invention solves the problem of synchronous implantation of multiple nuts into the injection cavity, meeting the processing requirements of an arc-shaped bottom shell. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an injection mold according to an embodiment of the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the inclined core-pulling mechanism forming the arc-shaped bottom shell;

[0018] Figure 3 for Figure 2 A schematic diagram of the installation nut for the inclined core-pulling mechanism;

[0019] Figure 4 for Figure 3 Schematic diagram of the inclined core-pulling mechanism;

[0020] Figure 5 for Figure 1 Workflow diagram of injection molds;

[0021] Figure 6 for Figure 4 Enlarged structural diagram of section A.

[0022] Explanation of icon numbers:

[0023] name label name label Angled core pulling mechanism 1000 Annular groove 511a Drive structure 100 Guiding Department 513 Transmission block 300 Limit block 600 chute 300a guide 700 Card slot 300b Embedded parts 2000 Notch 300c Mold body 3000 connector 400 Injection cavity 3000a head 410 dynamic model 3100 pole 430 arc-shaped cavity wall 3111 Pin setting 500 Fixed mold 3300 Mounting head 510 Arc-shaped bottom shell 5000 Limiting part 511

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] See Figures 1 to 6 As shown, in one embodiment of this utility model, a slanted core-pulling mechanism 1000 includes: a drive structure 100, a transmission block 300, and a plurality of insert pins 500. The drive structure 100 is used to provide driving power for linear motion. The drive structure 100 is connected to the transmission block 300 and is used to drive the transmission block 300 to move linearly along the driving direction. The plurality of insert pins 500 are spaced apart on the surface of the transmission block 300 away from the drive structure 100. The insert pins 500 extend along the driving direction so that the free ends of the plurality of insert pins 500 synchronously extend into or exit the injection cavity 3000a as the transmission block 300 moves.

[0028] In this invention, the drive structure 100 is connected to the transmission block 300. The drive structure 100 drives the transmission block 300 to move linearly along the drive direction. Multiple insert pins 500 are spaced apart on the surface of the transmission block 300 away from the drive structure 100. The insert pins 500 extend along the drive direction, thus inheriting the linear motion of the transmission block 300 in that direction, ensuring synchronous linear motion of the multiple insert pins 500. In this way, the free ends of the multiple insert pins 500 synchronously enter or exit the injection cavity 3000a. A nut is installed on the free end of each insert pin 500, thereby achieving synchronous implantation of multiple nuts into the injection cavity 3000a. This invention solves the problem of synchronous implantation of multiple nuts into the injection cavity 3000a, meeting the processing requirements of the arc-shaped bottom shell 5000.

[0029] It should be noted that the transmission block 300 in this embodiment can have different shapes, such as block or plate, as long as it has two back-to-back surfaces. In this way, the drive structure 100 and the insert pins 500 are respectively disposed on the two back-to-back surfaces of the transmission block 300. The drive structure 100 can be a hydraulic cylinder or include a motor and a lead screw structure, as long as the drive structure 100 can provide the driving power for linear motion. Preferably, in this embodiment, the drive structure 100 is a hydraulic cylinder, and the piston of the hydraulic cylinder is connected to the transmission block 300. The transmission block 300 moves linearly with the piston of the hydraulic cylinder. Multiple insert pins 500 are spaced apart from the surface of the transmission block 300 away from the hydraulic cylinder. In this way, the hydraulic cylinder drives multiple insert pins 500 to move synchronously, avoiding the synchronization error caused by multiple independent drives, reducing the energy consumption of the overall injection mold, reducing the volume occupied by the injection mold, and thus simplifying the structure of the injection mold.

[0030] See Figures 1 to 6 As shown, in one embodiment of this utility model, the inclined core-pulling mechanism 1000 further includes a guide member, which extends along the driving direction. The transmission block 300 is slidably connected to the guide member, so that the transmission block 300 slides along the guide member to drive the insert pins 500. It should be noted that, by setting a guide member along the driving direction, this embodiment ensures the linear movement of the transmission block 300 along the driving direction, thereby driving the multiple insert pins 500 spaced apart on the surface of the transmission block 300 to move synchronously in a linear manner. In this way, the free ends of the multiple insert pins 500 synchronously extend into or exit the injection cavity 3000a, thereby solving the problem of synchronous implantation of multiple nuts in the injection cavity 3000a, thus realizing the synchronous implantation of multiple nuts into the injection cavity 3000a.

[0031] See Figures 1 to 6As shown, in one embodiment of this utility model, the guide includes two guide rails 700 spaced apart, and a transmission block 300 is disposed in front of the two guide rails 700 and slidably connected to the two guide rails 700, so that the transmission block 300 slides between the two guide rails 700 to drive the insert pins 500. It should be noted that in this embodiment, the two ends of the transmission block 300 facing away from each other are slidably connected to the two guide rails 700, so that the transmission block 300 slides along the extension direction of the two guide rails 700, and the guide rails 700 extend along the driving direction, thereby ensuring the linear movement of the transmission block 300 along the driving direction. Thus, the free ends of multiple insert pins 500 synchronously extend into or exit the injection cavity 3000a with the linear movement of the transmission block 300, realizing the synchronous movement of multiple insert pins 500. Of course, in this embodiment, the transmission block 300 and the guide rails 700 can be slidably connected by a slot-hole fit, as long as the transmission block 300 can slide along the guide rails 700. This embodiment is not limited to this, and all of the above are within the protection scope of this utility model.

[0032] See Figures 1 to 6 As shown, in one embodiment of this utility model, the transmission block 300 has notched grooves 300c formed at its two opposite ends. The transmission block 300 is slidably connected to the guide rail 700 through the notched grooves 300c, so that the transmission block 300 slides along the guide rail 700 under the action of the notched grooves 300c. It should be noted that in this embodiment, the transmission block 300 is slidably connected to the guide rail 700 through the notched grooves 300c, which improves the stability of the movement of the transmission block 300 while ensuring the linear movement of the transmission block 300. This further ensures the synchronous movement of the multiple inserts 500 on the transmission block 300, thereby greatly reducing the synchronization error of the multiple inserts 500, which is beneficial for the synchronous implantation of multiple nuts into the injection cavity 3000a.

[0033] See Figures 1 to 6As shown, in one embodiment of this utility model, the free end of the insert pin 500 is formed with a mounting head 510. The mounting head 510 is used to install the embedded part 2000, so that the embedded part 2000 is fixed in the molded part of the injection cavity 3000a by injection molding. It should be noted that the embedded part 2000 in this embodiment can be a nut or a copper pillar. This embodiment can install the corresponding embedded part 2000 as needed. This embodiment is not limited to this. All of the above are within the protection scope of this utility model. In order to facilitate the subsequent explanation of the technical effects, this embodiment only uses a nut as an example. In this embodiment, the nut is sleeved on the mounting head 510. The gap between the nut and the sleeved mounting head 510 is 0.08 to 0.12 mm. This ensures the coaxiality of the nut and the insert pin 500, while facilitating the demolding of the arc-shaped bottom shell 5000 with the nut fixed on it, and avoids the deformation of the arc-shaped bottom shell 5000 caused by demolding. Specifically, in this embodiment, the mounting head 510 includes a guide portion 513 and a limiting portion 511 arranged sequentially. The guide portion 513 is located at the free end of the insert pin 500, allowing the nut to be guided into the limiting portion 511 through the guide portion 513. The limiting portion 511 has an annular groove 511a, which surrounds the insert pin 500 circumferentially. The annular groove 511a provides space for the thermal deformation of the embedded part 2000. In this embodiment, by setting the mounting head 510, the nut is correspondingly installed on the mounting head 510 of the insert pin 500, thereby achieving the positioning and installation of the nut on the insert pin 500. In this way, each mounting head 510 of the insert pin 500 positions and installs one nut, thereby ensuring that multiple nuts are simultaneously implanted into the injection cavity 3000a through the synchronous movement of multiple insert pins.

[0034] See Figures 1 to 6 As shown, in one embodiment of this utility model, a plurality of sliding grooves 300a are formed on the surface of the transmission block 300 opposite to the drive structure 100. These sliding grooves 300a are arranged side-by-side on the surface of the transmission block 300, and a plurality of insert pins 500 are slidably mounted on the transmission block 300 through the sliding grooves 300a. It should be noted that in this embodiment, a plurality of sliding grooves 300a are formed on the surface of the transmission block 300, with one end of each groove penetrating the transmission block 300, allowing the insert pins 500 to be mounted on the transmission block 300 through the grooves 300a. Each groove 300a is used to mount one insert pin 500, so that multiple insert pins 500 are respectively mounted on the transmission block 300. In this embodiment, the mounting position of the insert pins 500 on the transmission block 300 is adjusted by using the sliding grooves 300a, thereby adjusting the mounting position of the nut on the arc-shaped bottom shell 5000. This allows the nut to be mounted at different positions on the arc-shaped bottom shell 5000, satisfying the processing requirements of different arc-shaped bottom shells 5000.

[0035] See Figures 1 to 6As shown, in one embodiment of this utility model, the inclined core-pulling mechanism 1000 includes a connector 400. A groove 300b is formed on the surface of the transmission block 300, and the connector 400 is disposed in the groove 300b. The drive structure 100 is connected to the transmission block 300 via the connector 400. It should be noted that the connector 400 in this embodiment is a rigid component, meaning a structural component that will not undergo elastic deformation. The connector 400 can be a bolt or a screw. The groove 300b can be a T-slot or a groove with a gradually changing diameter, as long as the connector 400 and the transmission block 300 can be engaged. This embodiment is not limited to these limitations, and all of the above are within the protection scope of this utility model. In this embodiment, the piston of the hydraulic cylinder is connected by a threaded connector 400. The hydraulic cylinder drives the transmission block 300 in cooperation with the connector 400 and the slot 300b, thereby realizing the stable linear motion of the transmission block 300. This is beneficial for the free ends of multiple insert pins 500 to extend into or exit the injection cavity 3000a synchronously with the movement of the transmission block 300, ensuring the synchronous movement of multiple insert pins 500.

[0036] See Figures 1 to 6 As shown, in one embodiment of this utility model, the connector 400 includes a head 410 and a rod 430. The head 410 is held in a slot 300b, and the head 410 and the rod 430 are arranged back to back. The rod 430 passes through the slot 300b and is connected to the drive structure 100. It should be noted that in this embodiment, the head 410 and the rod 430 form a T-shaped structure. The head 410 is held in the slot 300b, and the surface of the head 410 facing away from the rod 430 abuts against the bottom wall of the slot 300b. The rod 430 passes through the slot 300b and is connected to the piston of the hydraulic cylinder. Thus, the hydraulic cylinder achieves stable transmission of the transmission block 300 through the connector 400, thereby improving the stability of the linear motion of the transmission block 300. This facilitates the synchronous insertion or withdrawal of multiple inserts 500 on the transmission block 300 into or out of the injection cavity 3000a, ensuring the synchronous movement of multiple inserts 500.

[0037] See Figures 1 to 6As shown, in one embodiment of this utility model, a limiting block 600 is installed on the surface of the insert pin 500 of the transmission block 300. The limiting blocks 600 are spaced apart from the insert pin 500 and are used to abut against the outside to limit the insertion depth of the insert pin 500 in the injection cavity 3000a. It should be noted that before injection molding, as the insert pin 500 extends into the injection cavity 3000a under the action of the transmission block 300, the limiting blocks 600 gradually approach the mold body until they abut against the mold body. In this way, the limiting blocks 600 limit the insertion depth of the insert pin 500 in the injection cavity 3000a, thereby positioning the nut in the arc-shaped bottom shell 5000. This facilitates the positioning and insertion of the nut into the arc-shaped bottom shell 5000, thus meeting the processing requirements of the arc-shaped bottom shell 5000. In addition, the surface of the limiting block 600 facing away from the transmission block 300 in this embodiment can be formed with inclined surfaces at different angles to adapt to different mold bodies and meet the processing requirements of different arc-shaped bottom shells. This embodiment is not limited to this, and all of the above are within the protection scope of this utility model.

[0038] See Figures 1 to 6As shown, in one embodiment of the present invention, an injection mold includes a mold body 3000 and the aforementioned inclined core-pulling mechanism 1000, the inclined core-pulling mechanism 1000 being mounted on the mold body 3000. Specifically, in this embodiment, the mold body 3000 includes a fixed mold 3300 and a moving mold 3100. The fixed mold 3300 and the moving mold 3100 are arranged opposite to each other to form an injection cavity 3000a. The injection cavity 3000a has an arc-shaped cavity wall 3111. The inclined core pulling mechanism 1000 includes a drive structure 100, a transmission block 300, and a plurality of insert pins 500. The drive structure 100 is used to provide driving power for linear motion. The drive structure 100 is connected to the transmission block 300 and is used to drive the transmission block 300 to move linearly along the driving direction. The plurality of insert pins 500 are spaced apart on the surface of the transmission block 300 away from the drive structure 100. The plurality of insert pins 500 are respectively arranged along the normal direction of the arc-shaped cavity wall 3111. The plurality of insert pins 500 are movably arranged on the arc-shaped cavity wall 3111 to synchronously extend into or exit the injection cavity 3000a. The insert pins 500 are used to install nuts so that the plurality of nuts are synchronously inserted into the injection cavity 3000a. It should be noted that in this embodiment, the drive structure 100 is connected to the transmission block 300. The drive structure 100 drives the transmission block 300 to move linearly along the drive direction. Multiple insert pins 500 are spaced apart on the surface of the transmission block 300 away from the drive structure 100. The insert pins 500 extend along the drive direction, thus inheriting the linear motion of the transmission block 300 in that direction, ensuring the synchronous linear motion of the multiple insert pins 500. In this way, the free ends of the multiple insert pins 500 synchronously extend into or exit the injection cavity 3000a. Each insert pin 500 has a nut installed at its free end, thereby achieving the synchronous implantation of multiple nuts into the injection cavity 3000a. This invention solves the problem of synchronous implantation of multiple nuts into the injection cavity 3000a, meeting the processing requirements of the arc-shaped bottom shell 5000.

[0039] Additional notes: The workflow for this injection mold is as follows (see attached image). Figure 5 As shown, in the first step, the hydraulic cylinder drives multiple insert pins 500 to simultaneously extend into the injection cavity 3000a via the transmission block 300; in the second step, nuts are installed on the free ends of the multiple insert pins 500 respectively; in the third step, the mold is closed, and injection molding material is added into the injection cavity 3000a so that the nuts are fixed to the formed arc-shaped bottom shell 5000 through injection molding; in the fourth step, after the injection molding is completed, the hydraulic cylinder drives the multiple insert pins 500 to exit the injection cavity 3000a via the transmission block 300; in the fifth step, the mold is opened, and the formed arc-shaped bottom shell 5000 is ejected.

[0040] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A mechanism for angular core-drawing, characterized in that, include: The device includes a drive structure, a transmission block, and multiple insert pins. The drive structure is connected to the transmission block and is used to drive the transmission block to move linearly along the drive direction. The multiple insert pins are spaced apart on the surface of the transmission block opposite to the drive structure. The insert pins extend along the drive direction so that the free ends of the multiple insert pins synchronously extend into or exit the injection cavity as the transmission block moves.

2. A mechanism as claimed in claim 1, wherein The oblique core-pulling mechanism also includes a guide member that extends along the driving direction. The transmission block is slidably connected to the guide member so that the transmission block slides along the guide member to drive the insert pin.

3. A mechanism as claimed in claim 2, wherein The guide includes two guide rails spaced apart, and the transmission block is disposed between the two guide rails and slidably connected to the two guide rails, so that the transmission block slides between the two guide rails to drive the insert pin.

4. A mechanism as claimed in claim 3, wherein The transmission block has notches formed at its two opposite ends. The transmission block is slidably connected to the guide rail through the notches, so that the transmission block slides along the guide rail under the action of the notches.

5. A mechanism according to any one of claims 1 to 4, wherein The free end of the insert has a mounting head, which is used to install the embedded part so that the embedded part is fixed in the injection cavity by injection molding.

6. A mechanism according to any one of claims 1 to 4, wherein The transmission block has multiple grooves formed on its surface away from the drive structure. The multiple grooves are arranged side by side on the surface of the transmission block, and the multiple insert pins are slidably mounted on the transmission block through the grooves.

7. The inclined core-pulling mechanism as described in any one of claims 1 to 4, characterized in that, The inclined core-pulling mechanism includes a connector, and a groove is formed on the surface of the transmission block. The connector is installed in the groove, and the drive structure is connected to the transmission block through the connector.

8. A mechanism as claimed in claim 7, wherein The connector includes a head and a rod. The head is held in the slot, and the head and the rod are arranged back to back. The rod passes through the slot and is connected to the drive structure.

9. The inclined core-pulling mechanism as described in any one of claims 1 to 4, characterized in that, The transmission block has a limiting block mounted on the surface of the insert pin. The limiting block is spaced apart from the insert pin and is used to abut against the outside to limit the insertion depth of the insert pin in the injection cavity.

10. An injection mold characterized in that, The mold body includes a mold body and a slanted core-pulling mechanism as described in any one of claims 1 to 9, wherein the slanted core-pulling mechanism is mounted on the mold body.

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