A demolding mechanism for a dust collector injection molding

Abstract

The utility model relates to injection mold technical field, specifically disclose a dust catcher injection demolding mechanism, including fixed mould and movable mould, the fixed mould inside sets up the die pin for the shaping work piece, the movable mould one side sets up first mounting panel, and first mounting panel is slidably connected with a core rod through first sliding block on, the movable mould one side is provided with power element through support frame, and power element drives the core rod rotation, the movable mould is slidably connected with second sliding block away from first sliding block on, and second sliding block is provided with the insert dust catcher injection demolding mechanism with the shaping work piece, rotates and cooperates axial sliding through motor drive core rod, realizes the stable separation of the screw thread section and work piece internal thread, effectively avoids the thread damage problem caused by traditional manual demolding, significantly improves the demolding precision and the yield, significantly reduces the scrap rate in the production process, saves the cost, is suitable for widely using.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically a demolding mechanism for vacuum cleaner injection molding. Background Technology

[0002] Injection molds are tools used to produce plastic products; they also give plastic products their complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into a mold cavity under high pressure using an injection molding machine, and then cooling and solidifying it to obtain the molded product; vacuum cleaner suction end connecting pipes are also often produced using injection molds.

[0003] Specifically, vacuum cleaner hoses are key components in vacuum cleaners, widely used in household, commercial, and industrial vacuum cleaners. These hoses are typically made of plastic (such as ABS, PP, PC, etc.), have a hollow structure, and often feature precise internal threads (threads) at the nozzles or specific connections to ensure reliable and sealed connections with other components (such as nozzles, hoses, dustbins, etc.). Because vacuum cleaner hoses need to withstand airflow pressure, frequent insertion and removal torque, and a certain amount of physical impact, their structural strength, dimensional accuracy (especially the threaded portion), and connection sealing are crucial. Therefore, efficient, stable, and high-precision mass production of vacuum cleaner hoses with qualified threaded structures is a significant industry requirement.

[0004] After the vacuum cleaner hose is injection molded, demolding is required. At this point, it is difficult to precisely control the applied torque and the uniformity of rotation during the manual core removal process. Insufficient force may prevent the core from being unscrewed smoothly; excessive force or improper operation (such as angular deviation or application of lateral force) can easily cause scratches, tears, deformation, or even breakage of the internal threads of the product. This risk of damage is particularly prominent for vacuum cleaner hoses with fine thread structures, thin walls, or relatively poor material toughness. Product damage directly leads to an increase in scrap rate and a decrease in yield. Utility Model Content

[0005] The purpose of this invention is to provide a demolding mechanism for injection molding of vacuum cleaners to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a demolding mechanism for injection molding of a vacuum cleaner, comprising a fixed mold and a moving mold, wherein a mold core for forming a workpiece is provided inside the fixed mold, a first mounting plate is provided on one side of the moving mold, and a core rod is slidably connected to the first mounting plate via a first slider; a power component is provided on one side of the moving mold via a support frame, and the power component drives the core rod to rotate; a second slider is slidably connected to the moving mold away from the first slider, and an insert for forming a workpiece is provided on the second slider.

[0007] Furthermore, the power component includes a motor mounted on a support frame, a long gear on the output end of the motor, and a spur gear mounted on the core rod, wherein the spur gear meshes with the long gear.

[0008] Furthermore, the core rod is provided with a threaded section on the side near the workpiece, and a threaded section adapted to the threaded section is formed on the inner side of the workpiece, and the threaded section and the threaded section are threadedly connected.

[0009] Furthermore, an extension rod is fixedly connected to the core rod, the extension rod is slidably connected to the support frame, and a spur gear is disposed on the extension rod.

[0010] Furthermore, a buffer reset component is provided between the first slider and the support frame.

[0011] Furthermore, the buffer reset component includes a slide rod slidably connected to the support frame, the slide rod being fixedly connected to the first slider, and a buffer spring being provided between the slide rod and the support frame.

[0012] Furthermore, a second mounting plate is provided on the moving mold away from the first mounting plate, and the second slider is slidably connected to the second mounting plate.

[0013] Furthermore, the moving mold is provided with a cylinder for driving the second slider to slide.

[0014] Furthermore, a limiting component is provided between the moving mold and the fixed mold.

[0015] Furthermore, the limiting component includes a limiting cylinder installed on the fixedly connected moving mold, and the fixed mold is provided with a limiting post that is slidably connected to the limiting cylinder.

[0016] Compared with existing technologies, the beneficial effects of this utility model are as follows: This demolding mechanism for vacuum cleaner injection molding achieves smooth separation of the threaded section from the internal thread of the workpiece by driving the core rod to rotate with a motor and cooperating with axial sliding. This effectively avoids the thread damage problem caused by traditional manual demolding, significantly improving demolding accuracy and yield. The use of servo motors and cylinders to drive the demolding process automates the process, reduces manual intervention, and improves production efficiency. It is especially suitable for mass production. At the same time, by optimizing the demolding force control and motion trajectory, it avoids problems such as workpiece deformation and tearing, significantly reducing the scrap rate in the production process, saving costs, and making it suitable for widespread use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 This is a schematic diagram of the fixed-mold hidden state structure provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the hidden state structure of the mold core provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the power component installation method provided in an embodiment of the present invention; Figure 5 This is a schematic diagram showing the setting position of the threaded section in an embodiment of the present utility model; Figure 6 This is a schematic diagram of the installation position structure of the second mounting plate provided in an embodiment of the present utility model; Figure 7 A schematic diagram of the workpiece structure provided for an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Fixed mold; 2. Moving mold; 3. Mold core; 4. First mounting plate; 5. Motor; 6. Long gear; 7. Spur gear; 8. Core rod; 81. Threaded section; 9. Workpiece; 91. Threaded section; 10. Second slider; 11. Insert; 12. Second mounting plate; 13. Cylinder. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-7 This utility model provides a technical solution: a demolding mechanism for injection molding of a vacuum cleaner, including a fixed mold 1 and a moving mold 2. The fixed mold 1 is provided with a mold core 3 for molding a workpiece 9. A first mounting plate 4 is provided on one side of the moving mold 2. A core rod 8 is slidably connected to the first mounting plate 4 through a first slider. A power component is provided on one side of the moving mold 2 through a support frame. The power component drives the core rod 8 to rotate. A second slider 10 is slidably connected to the moving mold 2 away from the first slider. An insert 11 for molding the workpiece 9 is provided on the second slider 10.

[0022] Specifically, the demolding mechanism for vacuum cleaner injection molding consists of a fixed mold 1 and a moving mold 2. The fixed mold 1 has a mold core 3 embedded inside, used to form the hollow tubular structure of the vacuum cleaner workpiece 9. A first mounting plate 4 is fixed to one side of the moving mold 2, and a core rod 8 is horizontally slidably connected to the first mounting plate 4 via a linear guide rail. The core rod 8 can move axially. A power component is mounted on the other side of the moving mold 2 via a support frame. The power component drives the core rod 8 to rotate via gear transmission. A second slider 10 is also provided at the far end of the moving mold 2. The second slider 10 is slidably connected to the moving mold 2 via a T-slot, and an insert 11 for forming the outer contour of the workpiece 9 is fixed on it. During demolding, the moving mold 2 separates from the fixed mold 1, the power component is activated, the core rod 8 rotates and retracts, and at the same time, the cylinder 13 pushes the second slider 10 to retract laterally, realizing the threaded demolding and overall demolding of the workpiece 9.

[0023] In the embodiments provided by this utility model, the power component includes a servo motor 5, which is fixed to the mounting base of the support frame by bolts, and a long gear 6 is mounted on the output shaft. A spur gear 7 is mounted on the extension rod of the core rod 8, and the spur gear 7 meshes with the long gear 6. The motor 5 is controlled to rotate forward and backward by a PLC, driving the core rod 8 to rotate at a certain speed, ensuring that the threaded section 81 smoothly unscrews the threaded section 91 of the workpiece 9. The gear is made of hardened steel and has a carburized surface treatment to improve wear resistance.

[0024] In the embodiment provided by this utility model, the front end of the core rod 8 is machined with a precision threaded section 81, the pitch of which perfectly matches the internal thread section 91 of the workpiece 9. The length of the threaded section 81 is ≥ 1.5 times the thread depth of the workpiece 9 to ensure full engagement. During demolding, the core rod 8 rotates and simultaneously retracts axially, and the threaded section 81 gradually exits the threaded section 91 to avoid damage.

[0025] In the embodiment provided by this utility model, an extension rod is fixedly connected to the core rod 8, and the extension rod is slidably connected to the support frame. A spur gear 7 is mounted on the extension rod, and the extension rod is welded to the tail of the core rod 8 to achieve axial sliding and radial positioning. The spur gear 7 is fixed to the end of the extension rod via a keyway, and retaining rings are installed on both sides of the gear to prevent axial movement. The support frame is provided with an oil injection hole, and high-temperature grease is periodically added to ensure smooth sliding.

[0026] In the embodiments provided by this utility model, a buffer reset component is provided between the first slider and the support frame. The buffer reset component consists of a slide rod and a buffer spring. One end of the slide rod is threaded to the first slider, and the other end passes through the guide hole of the support frame, with a buffer spring sleeved at the end. During demolding, the core rod 8 retracts to compress the spring and absorb inertial impact; after demolding is completed, the spring pushes the slide rod to reset, causing the core rod 8 to return to its initial position.

[0027] In the embodiments provided by this utility model, a second mounting plate 12 is provided on the moving mold 2 away from the first mounting plate 4, and the second slider 10 is slidably connected to the second mounting plate 12, which further improves the stability of the second slider 10 when sliding.

[0028] In the embodiments provided by this utility model, the moving mold 2 is provided with a cylinder 13 for driving the second slider 10 to slide, thereby providing power for the sliding of the second slider 10.

[0029] In the embodiments provided by this utility model, a limiting component is also provided between the moving mold 2 and the fixed mold 1. The limiting component includes a limiting cylinder installed on the fixedly connected moving mold 2, and a limiting post slidably connected to the limiting cylinder is provided on the fixed mold 1. A buffer pad is provided at the end of the limiting post to reduce impact noise, improve accuracy, and reduce noise.

[0030] It should be noted that the electrical equipment involved in this application can be powered by a storage battery or an external power source, and this application is equipped with a control system for controlling the operation of the entire equipment.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A demolding mechanism for injection molding of a vacuum cleaner, comprising a fixed mold (1) and a movable mold (2), wherein the fixed mold (1) is provided with a mold core (3) for forming a workpiece (9), characterized in that: A first mounting plate (4) is provided on one side of the moving mold (2), and a core rod (8) is slidably connected to the first mounting plate (4) via a first slider. A power component is provided on one side of the moving mold (2) via a support frame, and the power component drives the core rod (8) to rotate; The moving mold (2) is slidably connected to a second slider (10) away from the first slider, and the second slider (10) is provided with an insert (11) for forming a workpiece (9).

2. The demolding mechanism for injection molding of a vacuum cleaner according to claim 1, characterized in that: The power component includes a motor (5) mounted on a support frame, a long gear (6) on the output end of the motor (5), and a spur gear (7) mounted on the core rod (8), the spur gear (7) meshing with the long gear (6).

3. The demolding mechanism for injection molding of a vacuum cleaner according to claim 2, characterized in that: The core rod (8) is provided with a threaded section (81) on the side near the workpiece (9), and the inner side of the workpiece (9) is formed with a threaded section (91) that is compatible with the threaded section (81). The threaded section (81) and the threaded section (91) are threadedly connected.

4. The demolding mechanism for injection molding of a vacuum cleaner according to claim 2, characterized in that: An extension rod is fixedly connected to the core rod (8), the extension rod is slidably connected to the support frame, and a spur gear (7) is set on the extension rod.

5. The demolding mechanism for injection molding of a vacuum cleaner according to claim 1, characterized in that: A buffer reset component is provided between the first slider and the support frame.

6. The demolding mechanism for injection molding of a vacuum cleaner according to claim 5, characterized in that: The buffer reset component includes a slide rod slidably connected to the support frame, the slide rod being fixedly connected to the first slider, and a buffer spring being provided between the slide rod and the support frame.

7. The demolding mechanism for injection molding of a vacuum cleaner according to claim 1, characterized in that: The moving mold (2) is provided with a second mounting plate (12) away from the first mounting plate (4), and the second slider (10) is slidably connected to the second mounting plate (12).

8. A demolding mechanism for injection molding of a vacuum cleaner according to claim 7, characterized in that: The moving mold (2) is provided with a cylinder (13) for driving the second slider (10) to slide.

9. A demolding mechanism for injection molding of a vacuum cleaner according to claim 1, characterized in that: A limiting component is also provided between the moving mold (2) and the fixed mold (1).

10. A demolding mechanism for injection molding of a vacuum cleaner according to claim 9, characterized in that: The limiting component includes a limiting cylinder installed on the fixedly connected moving mold (2), and a limiting post that is slidably connected to the limiting cylinder is provided on the fixed mold (1).

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