A rapid positioning and locking device for a precision injection mold

Abstract

The utility model relates to injection mold technical field, and disclose a kind of precision injection mold quick positioning locking device, by connecting frame, support rod, limiting structure, sliding structure, connecting structure, stretching structure and synchronous gear structure etc., it is equipped with limiting structure in the four corners of support rod, contain moving baulk and displacement detector one, accurate position can be limited, slide rail two is cooperated with moving support rod, it is convenient to adjust mould position, the mounting plate in sliding structure, slide rail one and sliding block, make compression plate flexible movement, it is convenient to position and lock, stretching structure utilizes connecting cylinder to provide stable tension, synchronous gear structure ensures that both sides sliding block synchronous motion, compared with traditional technology, the device positioning accuracy is high, can effectively avoid the product quality problem generated due to positioning deviation, convenient operation, mould installation debugging time is greatly shortened, improve production efficiency, structure is stable, reduce mould loosening risk, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a quick positioning and locking device for precision injection molds. Background Technology

[0002] In the precision injection molding process, the injection mold is a key component that ensures the precision and quality of plastic products. The positioning and locking of the mold directly affect the accuracy and stability of injection molding. In order to achieve efficient and high-precision injection molding production, a device that can quickly and accurately position and reliably lock the mold is needed. The quick positioning and locking device can significantly shorten the mold installation and debugging time, improve production efficiency, and at the same time ensure that the mold is fixed in position during the injection process, thereby ensuring the dimensional accuracy and consistency of plastic products and meeting the increasingly stringent market requirements for precision injection molded products.

[0003] Traditional injection mold positioning and locking technologies have many drawbacks. Common traditional positioning methods often rely on manual operation for positioning and initial fixation, which is inefficient and the positioning accuracy is greatly affected by human factors, making it difficult to guarantee the consistency of positioning each time. In terms of locking, traditional locking structures may require complex operating procedures and many locking components, which not only increases the cost and weight of the mold, but also makes it prone to loosening during long-term use. Once the mold shifts or loosens during the injection process, it will lead to quality problems such as flash, dimensional deviations, and internal defects in plastic products, which will seriously affect the product qualification rate, increase production costs, and reduce the company's competitiveness in the market. To address these issues, we propose a rapid positioning and locking device for precision injection molds. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a rapid positioning and locking device for precision injection molds, which solves the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a precision injection mold quick positioning and locking device, comprising a connecting frame and a support rod. The support rod is fixedly installed on the top of the connecting frame. Limiting structures are provided at the four corners of the support rod. A second slide rail is fixedly installed on the top of the support rod. A second displacement detector is fixedly installed on the outer side of the support rod. A movable support rod is slidably installed on the top of the second slide rail. A sliding structure is provided on the side of the movable support rod. A set of parallel sliders is fixedly installed on the top of the sliding structure. A vertical pressing plate is fixedly installed on the top of the sliders. A connecting structure is provided on the side of the pressing plate. A tensioning structure is provided between the inner sides of the support rods. A synchronous gear structure is provided between the two sliders.

[0008] Preferably, the sliding structure includes a mounting plate and a slide rail. The mounting plate is fixedly installed on both sides of the movable support rod, and the slide rail is fixedly installed on the top of the mounting plate. A slider is slidably installed on the top of the slide rail.

[0009] Preferably, the limiting structure includes a movable stop and a displacement detector. The movable stop is fixedly installed at the four corners of the top of the support rod, and the displacement detector is fixedly installed on the side of the mounting plate.

[0010] Preferably, the connecting structure includes a fixed plate, a connecting rod, and a crank arm. The fixed plate is fixedly installed on the side of the pressing plate, and the bottom of the fixed plate is fixedly connected to the slider. The connecting rod is rotatably installed inside the fixed plate, and the other end of the connecting rod is rotatably connected to the crank arm. The middle part of the fixed plate is rotatably connected to the movable support rod.

[0011] Preferably, the tensioning structure includes an intermediate connecting plate, a fixed seat, and a connecting cylinder. A set of parallel intermediate connecting plates is fixedly installed between the two inner sides of the support rod. A fixed seat is fixedly installed on the top of the intermediate connecting plate, and a connecting cylinder is fixedly installed on the top of the fixed seat.

[0012] Preferably, the synchronous gear structure includes a synchronous gear seat cover, a synchronous gear box, a synchronous rack, and a gear seat base plate. The gear seat base plate is fixedly installed at the bottom of the movable support rod. The lower part of the movable support rod is fixedly connected to the connecting cylinder. The synchronous gear box is fixedly installed on the top of the gear seat base plate. The synchronous gear seat cover is fixedly installed on the top of the synchronous gear box. A set of opposing synchronous racks are movably installed on both sides of the synchronous gear box. The other end of the synchronous gear box is fixedly connected to the slider through a flange.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a quick positioning and locking device for precision injection molds, which has the following advantages:

[0015] 1. This precision injection mold quick positioning and locking device features limiting structures at the four corners of the support rod, including moving blocks and displacement detector one. These structures precisely limit the position of moving parts, while displacement detector two monitors the overall displacement in real time, providing data support for precise adjustments. During mold installation, these limiting and detection structures work together to ensure that the mold is accurately positioned in the preset position each time, avoiding product quality problems caused by positioning deviations, significantly improving the dimensional accuracy and consistency of the product, and increasing the product qualification rate.

[0016] 2. This precision injection mold quick positioning and locking device features a movable support rod that slides on slide rail two. With the extension and retraction of the connecting cylinder, the mold position can be quickly adjusted. The combination of the mounting plate, slide rail one, and slider in the sliding structure allows the pressing plate to move flexibly, facilitating mold positioning and locking operations. The synchronous gear structure ensures the synchronous movement of the sliders on both sides, further improving the convenience and stability of operation.

[0017] 3. This precision injection mold quick positioning and locking device, with its fixed plate, connecting rod and crank arm working together, can generate a stable clamping force when locking the mold. The synchronous gear structure ensures the consistency and stability of the movement of each component, further enhancing the structural stability of the entire device. This stable structural design effectively reduces the risk of mold displacement and loosening during the injection process, reduces the frequency and cost of mold maintenance, and extends the service life of the mold. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the displacement detector II of this utility model;

[0020] Figure 3 This is a schematic diagram of the movable stop of this utility model;

[0021] Figure 4 for Figure 3 A magnified view of part A in the diagram;

[0022] Figure 5 This is a schematic diagram of the articulated arm of this utility model;

[0023] Figure 6 for Figure 5 A magnified view of part B in the diagram.

[0024] In the diagram: 1. Connecting frame; 2. Support rod; 3. Moving stop; 4. Moving support rod; 5. Mounting plate; 6. Displacement detector one; 7. Slide rail one; 8. Slider; 9. Pressing plate; 10. Fixing plate; 11. Connecting rod; 12. Crank arm; 13. Displacement detector two; 14. Intermediate connecting plate; 15. Fixing seat; 16. Connecting cylinder; 17. Synchronous gear seat cover; 18. Synchronous gearbox; 19. Synchronous rack; 20. Gear seat base plate; 21. Slide rail two. 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] Please see Figure 1-6 A precision injection mold quick positioning and locking device includes a connecting frame 1 and a support rod 2. The support rod 2 is fixedly installed on the top of the connecting frame 1. Limiting structures are provided at the four corners of the support rod 2. A slide rail 21 is fixedly installed on the top of the support rod 2. A displacement detector 13 is fixedly installed on the outer side of the support rod 2. A movable support rod 4 is slidably installed on the top of the slide rail 21. A sliding structure is provided on the side of the movable support rod 4. A set of parallel sliders 8 is fixedly installed on the top of the sliding structure. A vertical pressing plate 9 is fixedly installed on the top of the sliders 8. A connecting structure is provided on the side of the pressing plate 9. A tensioning structure is provided between the inner sides of the support rod 2. A synchronous gear structure is provided in the middle of the two sliders 8.

[0027] Furthermore, the sliding structure includes a mounting plate 5 and a slide rail 7. The mounting plate 5 is fixedly installed on both sides of the movable support rod 4, and the slide rail 7 is fixedly installed on the top of the mounting plate 5. A slider 8 is slidably installed on the top of the slide rail 7. The mounting plate 5 not only serves to connect the movable support rod 4 and the slide rail 7, but is also made of high-strength aluminum alloy. This material ensures structural strength while reducing the weight of the overall device. Its surface is finely sanded, which increases the friction between it and other components, preventing loosening during device operation.

[0028] Furthermore, the limiting structure includes a movable stop 3 and a displacement detector 6. The movable stop 3 is fixedly installed at the four corners of the top of the support rod 2, and the displacement detector 6 is fixedly installed on the side of the mounting plate 5. The surface of the movable stop 3 is made of a high-hardness, wear-resistant rubber material. This material can effectively buffer the impact force when the moving parts collide, and also provide sufficient friction to prevent the moving parts from rebounding or sliding after the collision. The movable stop 3 is designed in a trapezoidal shape, with its larger base tightly connected to the support rod 2 to ensure that it will not shift or loosen when subjected to large impact forces. The top of the trapezoid contacts the moving parts, which can more accurately limit the position of the moving parts.

[0029] Furthermore, the connecting structure includes a fixed plate 10, a connecting rod 11, and a crank arm 12. The fixed plate 10 is fixedly installed on the side of the pressing plate 9, and the bottom of the fixed plate 10 is fixedly connected to the slider 8. The connecting rod 11 is rotatably installed inside the fixed plate 10, and the other end of the connecting rod 11 is rotatably connected to the crank arm 12. The middle part of the fixed plate 10 is rotatably connected to the movable support rod 4. A stress monitoring sensor is installed on the fixed plate 10, which can monitor the stress distribution of the fixed plate in real time during the mold locking process. Once the stress exceeds the preset safety value, the sensor will issue an alarm in time to remind the operator to stop the operation or adjust the locking force to prevent the fixed plate from being damaged due to stress concentration. A high-precision ball bearing is installed at the rotating shaft of the connecting rod 11, which greatly reduces the rotational friction resistance, makes the connecting rod rotate more flexibly, reduces power loss, and improves the response speed of the connecting structure, ensuring that it can act quickly when the mold needs to be locked or released quickly, thereby improving production efficiency.

[0030] Furthermore, the tensioning structure includes an intermediate connecting plate 14, a fixed seat 15, and a connecting cylinder 16. A set of parallel intermediate connecting plates 14 are fixedly installed between the two inner sides of the support rod 2. A fixed seat 15 is fixedly installed on the top of the intermediate connecting plate 14, and a connecting cylinder 16 is fixedly installed on the top of the fixed seat 15. A flexible connection is adopted between the intermediate connecting plate 14 and the fixed seat 15. In this way, when the connecting cylinder 16 vibrates during operation, the flexible connection can effectively absorb the vibration energy, reduce the vibration transmission to the entire device, and avoid the impact of vibration on the mold positioning accuracy and device stability. The piston surface of the connecting cylinder 16 is coated with a Teflon coating, which reduces the friction coefficient between the piston and the inner wall of the cylinder, improves the sealing performance of the cylinder, makes the cylinder run more smoothly, reduces gas leakage, ensures stable and reliable output tension, and provides continuous and stable support force for the mold during injection molding.

[0031] Furthermore, the synchronous gear structure includes a synchronous gear seat cover 17, a synchronous gear box 18, a synchronous rack 19, and a gear seat base plate 20. The gear seat base plate 20 is fixedly installed at the bottom of the movable support rod 4, and the lower part of the movable support rod 4 is fixedly connected to the connecting cylinder 16. The synchronous gear box 18 is fixedly installed on the top of the gear seat base plate 20, and the synchronous gear seat cover 17 is fixedly installed on the top of the synchronous gear box 18. A set of opposing synchronous racks 19 are movably installed on both sides of the synchronous gear box 18. The other end of the synchronous gear box 18 is fixedly connected to the slider 8 through a flange. A lubricating device is installed on the synchronous gear seat cover 17. The grease filling port and oil level observation window facilitate regular lubrication and maintenance of the gears inside the synchronous gearbox 18. The oil level observation window allows for direct monitoring of the grease level, ensuring that the gears are always in good lubrication condition, reducing wear, and extending the service life of the synchronous gear structure. The synchronous rack 19 adopts an adjustable design, and the position of the synchronous rack can be slightly adjusted through a fine-tuning mechanism to compensate for the decrease in gear and rack meshing accuracy caused by manufacturing errors or long-term use. This ensures that the sliders 8 on both sides always maintain highly synchronized movement, ensuring uniform force on the mold during the locking process and improving the reliability of mold positioning and locking.

[0032] Structural Description:

[0033] Connecting frame 1: Connecting frame 1 is the basic support structure of the entire device. It is located at the bottom of the device, and its top is used to fix the support rod 2, providing stable support for the entire device and ensuring the normal operation of each component.

[0034] Support rod 2: Support rod 2 is installed on the top of connecting frame 1. It has a limiting structure at the four corners, a slide rail 21 is installed on the top, and a displacement detector 23 is installed on the outer side. It is a key structure that supports other components and assists in positioning.

[0035] Moving block 3: The moving block 3 is fixed at the four corners of the top of the support rod 2. It is made of high hardness wear-resistant rubber and is used to limit the position of the moving parts, prevent them from moving excessively, and ensure the positioning accuracy of the mold.

[0036] Movable support rod 4: The movable support rod 4 slides on the slide rail 21, with a sliding structure on the side and connected to the connecting cylinder 16 at the bottom. By moving and adjusting the position of the mold, the quick positioning function can be achieved.

[0037] Mounting plate 5: Mounting plate 5 is fixed on both sides of the movable support rod 4, and slide rail 7 is installed on the top. It is made of high-strength aluminum alloy and is used to connect the movable support rod 4 and slide rail 7 to assist the movement of slider 8.

[0038] Displacement detector 16: Displacement detector 16 is installed on the side of mounting plate 5 to monitor the displacement of mounting plate 5 in real time, providing data support for precise positioning and ensuring accurate mold installation position;

[0039] Slide rail 7: Slide rail 7 is installed on the top of mounting plate 5 and adopts a high-precision design. The top of slide rail 8 is slidably installed to ensure that the slider 8 moves smoothly and accurately, and to assist in mold positioning and locking.

[0040] Slider 8: Slider 8 slides on slide rail 7, with pressure plate 9 fixed at the top and connected on both sides by a synchronous gear structure, which drives the pressure plate 9 to move, thereby achieving the positioning and locking operation of the mold;

[0041] Pressing plate 9: The pressing plate 9 is fixed to the top of the slider 8 and has a connecting structure on the side for pressing the mold. Under the action of the connecting structure, the mold is stably clamped.

[0042] Fixed plate 10: Fixed plate 10 is fixed to the side of pressing plate 9 and connected to slider 8 at the bottom. Internally, connecting rod 11 is rotatably installed to monitor locking stress and assist in mold locking.

[0043] Connecting rod 11: Connecting rod 11 is rotatably installed inside fixed plate 10. One end is connected to crank arm 12, and the middle part is rotatably connected to movable support rod 4 to transmit power and drive crank arm 12 to move and lock mold.

[0044] Crank arm 12: One end of the crank arm 12 is rotatably connected to the connecting rod 11. Under the drive of the connecting rod 11, it applies a clamping force to the mold to achieve stable locking of the mold.

[0045] Displacement detector 213: Displacement detector 213 is installed on the outer side of support rod 2 to monitor the overall displacement of the device, assist in precise adjustment, and ensure the positioning accuracy of the mold;

[0046] Intermediate connecting plate 14: The intermediate connecting plate 14 is installed parallel to the two inner sides of the support rod 2, and the top is fixed with a fixing seat 15 for connecting the fixing seat 15 and assisting the operation of the tension structure.

[0047] Fixed seat 15: Fixed seat 15 is installed on the top of intermediate connecting plate 14 and is used to install connecting cylinder 16, providing stable support for connecting cylinder 16;

[0048] Connecting cylinder 16: The connecting cylinder 16 is installed on the top of the fixed base 15. It provides power to the device through the extension and retraction of the piston rod, assists in mold positioning and provides locking force;

[0049] Synchronous gear housing cover 17: The synchronous gear housing cover 17 is installed on the top of the synchronous gearbox 18 and is equipped with a grease filling port and an oil level observation window to protect the internal gears and facilitate lubrication and maintenance;

[0050] Synchronous gearbox 18: The synchronous gearbox 18 is installed on the top of the gear seat base plate 20. It contains synchronous gears to ensure that the sliders 8 on both sides move synchronously and enhance the stability of the device.

[0051] Synchronous rack 19: Synchronous rack 19 meshes with synchronous gears in synchronous gearbox 18. It adopts an adjustable design to compensate for meshing accuracy and ensure that slider 8 moves synchronously.

[0052] Gear base plate 20: The gear base plate 20 is fixed to the bottom of the movable support rod 4, and the synchronous gear box 18 is installed on the top, connecting the movable support rod 4 and the synchronous gear box 18;

[0053] Slide rail 21: Slide rail 21 is installed on the top of support rod 2, allowing the movable support rod 4 to slide, assisting in adjusting the mold position and achieving rapid positioning;

[0054] Working Principle: During the preparation phase, the connecting frame 1 serves as a stable foundation, bearing and supporting the entire device. The support rod 2, installed on top of the connecting frame 1, provides the installation reference and operating space for other components. During positioning, when the movable support rod 4 slides on the slide rail 21, the movable stops 3 located at the four corners of the top of the support rod 2, together with the displacement detector 6 installed on the side of the mounting plate 5, form a limiting structure. As the movable support rod 4 moves the mounting plate 5, the displacement detector 6 monitors the displacement of the mounting plate 5 in real time. When it approaches the preset position, the displacement detector 6 sends a signal, and the operator can then precisely adjust the moving distance of the movable support rod 4, working in conjunction with the movable stops 3 to limit the movement range, thus achieving... The mold is precisely positioned. Simultaneously, displacement detector 13, installed on the outer side of support rod 2, monitors the overall displacement of the device, providing data for precise adjustments, avoiding mold positioning deviations, and ensuring the dimensional accuracy and quality of plastic products. The sliding structure is crucial for positioning and locking. Mounting plates 5, installed on both sides of the movable support rod 4, have slide rails 7 at their tops connecting to sliders 8. A pressing plate 9 is fixed to the top of slider 8. When the movable support rod 4 moves, it drives the mounting plates 5, causing slider 8 and pressing plate 9 on slide rails 7 to move together. This allows pressing plate 9 to flexibly approach or move away from the mold, facilitating positioning and subsequent locking operations. The tensioning structure provides power to the device and is installed on the inner sides of support rod 2. The intermediate connecting plate 14 has a fixed base 15 fixed at its top. The connecting cylinder 16 is installed on the fixed base 15. After the connecting cylinder 16 is started, its piston rod extends and retracts. During the mold positioning stage, it assists the moving support rod 4 in adjusting its position. During the locking stage, it provides stable tension to ensure the mold is stable during injection. The connecting structure is responsible for locking the mold. The fixed plate 10 is fixed to the side of the pressing plate 9 and its bottom is connected to the slider 8. The connecting rod 11 is rotatably installed inside the fixed plate 10. One end is connected to the crank arm 12, and the middle part is rotatably connected to the moving support rod 4. When the slider 8 drives the pressing plate 9 to the appropriate position of the mold, the external control causes the connecting rod 11 to rotate, which drives the crank arm 12 to move. The crank arm 12 applies pressure to the mold. The force applied achieves stable clamping, ensuring the mold remains stationary during injection molding. The synchronous gear structure ensures that the sliders 8 on both sides move in unison. The gear base plate 20 is fixed to the bottom of the movable support rod 4 and connected to the connecting cylinder 16. The synchronous gear box 18 at the top has synchronous gears installed on both sides that are facing away from each other. The synchronous gear box 18 is fixed to the sliders 8 through flanges. When the connecting cylinder 16 drives the movable support rod 4 to move, the synchronous gear box 18 moves accordingly. The internal synchronous gears mesh with each other, driving the sliders 8 on both sides to move synchronously, allowing the pressing plate 9 to apply pressure to the mold evenly. This enhances the stability and reliability of the device, reduces the risk of mold displacement and loosening, lowers mold maintenance costs, and extends the mold's service life.

[0055] 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 quick positioning and locking device for a precision injection mold, comprising a connecting frame (1) and a support rod (2), characterized in that: A support rod (2) is fixedly installed on the top of the connecting frame (1). A limit structure is provided at the four corners of the support rod (2). A slide rail (21) is fixedly installed on the top of the support rod (2). A displacement detector (13) is fixedly installed on the outer side of the support rod (2). A movable support rod (4) is slidably installed on the top of the slide rail (21). A sliding structure is provided on the side of the movable support rod (4). A set of parallel sliders (8) is fixedly installed on the top of the sliding structure. A vertical pressing plate (9) is fixedly installed on the top of the sliders (8). A connecting structure is provided on the side of the pressing plate (9). A tensioning structure is provided between the inner sides of the support rod (2). A synchronous gear structure is provided between the two sliders (8).

2. The precision injection mold quick positioning and locking device according to claim 1, characterized in that: The sliding structure includes a mounting plate (5) and a slide rail (7). The mounting plate (5) is fixedly installed on both sides of the movable support rod (4). The slide rail (7) is fixedly installed on the top of the mounting plate (5), and a slider (8) is slidably installed on the top of the slide rail (7).

3. The precision injection mold quick positioning and locking device according to claim 2, characterized in that: The limiting structure includes a movable stop (3) and a displacement detector (6). The movable stop (3) is fixedly installed at the four corners of the top of the support rod (2), and the displacement detector (6) is fixedly installed on the side of the mounting plate (5).

4. The precision injection mold quick positioning and locking device according to claim 1, characterized in that: The connection structure includes a fixed plate (10), a connecting rod (11), and a crank arm (12). The fixed plate (10) is fixedly installed on the side of the pressing plate (9). The bottom of the fixed plate (10) is fixedly connected to the slider (8). The connecting rod (11) is rotatably installed inside the fixed plate (10). The other end of the connecting rod (11) is rotatably connected to the crank arm (12). The middle part of the fixed plate (10) is rotatably connected to the movable support rod (4).

5. The precision injection mold quick positioning and locking device according to claim 1, characterized in that: The tensioning structure includes an intermediate connecting plate (14), a fixed seat (15), and a connecting cylinder (16). A set of parallel intermediate connecting plates (14) are fixedly installed between the two inner sides of the support rod (2). A fixed seat (15) is fixedly installed on the top of the intermediate connecting plate (14), and a connecting cylinder (16) is fixedly installed on the top of the fixed seat (15).

6. The precision injection mold quick positioning and locking device according to claim 5, characterized in that: The synchronous gear structure includes a synchronous gear seat cover (17), a synchronous gear box (18), a synchronous rack (19), and a gear seat base plate (20). The gear seat base plate (20) is fixedly installed at the bottom of the movable support rod (4). The lower part of the movable support rod (4) is fixedly connected to the connecting cylinder (16). The synchronous gear box (18) is fixedly installed on the top of the gear seat base plate (20). The synchronous gear seat cover (17) is fixedly installed on the top of the synchronous gear box (18). A set of opposing synchronous racks (19) are movably installed on both sides of the synchronous gear box (18). The other end of the synchronous gear box (18) is fixedly connected to the slider (8) through a flange.

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