Self-locking mechanism of mold locking mechanism

Abstract

The utility model discloses a self-locking mechanism of a mould locking mechanism, which relates to the technical field of building construction and comprises two supporting strips, an oil cylinder is mounted at the top of each supporting strip, an inclined plane bolt is fixedly connected to the output end of each oil cylinder, a first mould plate is arranged between the two supporting strips, and a second mould plate is arranged between the first mould plate and the second mould plate. A second template is arranged on one side of the first template, and inclined parts are arranged on the opposite sides of the first template and the second template; according to the utility model, the inclined surface bolt and the inclined parts on the opposite sides of the first template and the second template extrude each other to generate horizontal component force to realize self-locking, so that the relative positions of the first template and the second template are kept, and the matching precision between the upper and lower dies is improved; the quality problems of flash, burrs, dimensional deviation and the like of finished products caused by mold displacement are reduced, the mold displacement caused when high-pressure molten metal is injected into a mold cavity is resisted, the mold is prevented from being opened due to external force impact, and safety accidents caused by ejection of the high-pressure molten metal are avoided.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a self-locking mechanism for a mold locking mechanism. Background Technology

[0002] The mold clamping mechanism is a key component in molding equipment such as injection molding machines and die casting machines. It is mainly used to realize the opening and closing of the mold during the production process and to keep the mold closed during the molding process to withstand the molding pressure. During the mold processing or molding process, the mold will undergo slight displacement due to external forces such as pressure and vibration, which will reduce the fitting accuracy between the upper and lower molds. This will result in flash, burrs, and dimensional deviations in the finished product, thus affecting the quality of the product.

[0003] For example, an existing patent (publication number: CN217495146U) discloses a mold-locking device, including a frame and a mold-locking frame mounted on the frame. The mold-locking frame includes a load-bearing plate, a front mold plate, a rear mold plate, a tail plate, a slide block, mold-closing guide pillars, a mold-locking cylinder, and a synchronization mechanism. This device can make the load on the mold-closing guide pillars more reasonable and extend their service life. Furthermore, a load-bearing plate is set on the front side of the front mold plate, allowing the mold-closing force to be transmitted in the width direction of the front mold plate. This ensures that the front and rear mold plates remain vertical when the mold is opened and closed. The mold-locking cylinder and support components are adjustable in height, allowing the height of the mold-closing force to be dynamically adjusted according to the design of the product. This makes the position of the mold-closing force acting on the mold more reasonable and ensures that the position of the mold with the largest required mold-closing force is met, thereby improving the quality of the product.

[0004] However, the above-designed mold clamping device still has some drawbacks in actual use: the device lacks an effective self-locking mechanism, making it difficult to cope with the displacement problem caused by complex external forces during the molding process. At the same time, it cannot provide self-locking protection against the impact that high-pressure molten metal may generate during the die casting process, which poses a safety risk.

[0005] To address this issue, we designed a self-locking mechanism for the mold-locking system. Utility Model Content

[0006] The purpose of this invention is to provide a self-locking mechanism for a mold-locking mechanism to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides a self-locking mechanism for a mold locking mechanism, including two support bars. A hydraulic cylinder is installed on the top of each support bar, and a slanted pin is fixedly connected to the output end of the hydraulic cylinder. A first template is provided between the two support bars, and a second template is provided on one side of the first template. Both the first template and the second template have inclined portions on opposite sides. The side of the slanted pin closest to the inclined portion is an inclined surface.

[0008] Furthermore, there are two hydraulic cylinders, with the first template and the second template located between the two inclined pins.

[0009] Furthermore, the support bar is slidably connected to the first template and the second template via a slide rail.

[0010] Furthermore, the tilt angle of the inclined portion is 30°, which matches the tilt angle of the inclined surface of the inclined pin.

[0011] Furthermore, the inclined pin is fixedly connected to the output end of the hydraulic cylinder by bolts.

[0012] Furthermore, the support bar is made of alloy steel.

[0013] Furthermore, both the first template and the second template are made of carbon structural steel.

[0014] Furthermore, the beveled pin is made of stainless steel.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Self-locking is achieved by the mutual compression of the inclined pin with the inclined parts on the opposite sides of the first and second mold plates, generating a horizontal component force. During mold processing or forming, it can maintain the relative position of the first and second mold plates, improve the fitting accuracy between the upper and lower molds, and avoid quality problems such as flash, burrs, and dimensional deviations in the finished product caused by mold displacement, thereby improving product quality. It also resists the displacement of the mold caused by the injection of high-pressure molten metal into the mold cavity, prevents the mold from opening due to external impact, and avoids safety accidents caused by the spraying of high-pressure molten metal.

[0017] 2. By incorporating two alloy steel support bars, a stable foundation is provided for the entire mechanism, enhancing structural stability. The first and second templates are made of carbon structural steel, which is resistant to deformation under pressure, further ensuring the locking effect. Furthermore, the coordinated operation of the two hydraulic cylinders allows for more precise and efficient movement of the inclined pin, making the self-locking and unlocking processes smoother. Overall, this optimizes the performance of the locking mechanism, improving the equipment's efficiency and reliability. Attached Figure Description

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

[0019] Figure 2 This is a side view of the present invention;

[0020] Figure 3 This is a front view of the present invention;

[0021] Figure 4 This utility model Figure 3 Enlarged diagram of point A in the middle.

[0022] In the diagram: 1. Support bar; 2. Hydraulic cylinder; 3. Inclined pin; 4. Second template; 5. First template; 6. Inclined section. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-4 This utility model provides a technical solution: a self-locking mechanism for a mold-locking mechanism, including support bars 1, which are made of alloy steel. There are two support bars 1. A hydraulic cylinder 2 is installed on the top of the support bar 1. The hydraulic cylinder 2 is hydraulically connected to an electromagnetic reversing valve through a hydraulic oil pipe. The electromagnetic reversing valve is connected to a control system through a control cable to control the operation of the hydraulic cylinder 2. A beveled pin 3 is fixedly connected to the output end of the hydraulic cylinder 2, and the hydraulic cylinder 2 provides power to the beveled pin 3. The beveled pin 3 is made of stainless steel. A first template 5 is provided between the two support bars 1, and a second template 4 is provided on one side of the first template 5. Both plate 5 and the second template 4 are made of carbon structural steel, which can withstand a certain pressure and is not easily deformed. The opposite side of the first template 5 and the second template 4 are provided with inclined parts 6. The side of the inclined pin 3 near the inclined part 6 is an inclined surface. The inclination angle of the inclined part 6 is 30°, which matches the inclination angle of the inclined surface of the inclined pin 3. When the oil cylinder 2 is started, it pushes the inclined pin 3 to move. The inclined surface of the inclined pin 3 and the inclined surface of the inclined part 6 squeeze each other. Using the mechanical principle of the inclined surface, a horizontal component force is generated, thereby realizing the self-locking of the first template 5 and the second template 4 and meeting the self-locking requirements of the mold locking mechanism.

[0025] In practice, firstly, the hydraulic cylinder 2 installed on the top of the alloy steel support bar 1 is activated. After the hydraulic cylinder 2 operates, its output end drives the stainless steel inclined pin 3, which is fixedly connected to it, to move. At this time, the first template 5 and the second template 4, which are located between the two support bars 1, are both provided with inclined parts 6 on opposite sides. As the inclined pin 3 moves, the inclined surface of the inclined pin 3 near the inclined part 6 will press against the inclined surface of the inclined part 6. According to the mechanical principle of the inclined surface, this pressing process generates a horizontal component force, which in turn enables the first template 5 and the second template 4 to achieve self-locking, ultimately satisfying the self-locking requirements of the mold locking mechanism.

[0026] See Figures 1-2As shown, the support bar 1 is slidably connected to the first template 5 and the second template 4 via a slide rail, which allows the first template 5 and the second template 4 to move relative to each other along a specific trajectory. There are two hydraulic cylinders 2. The first template 5 and the second template 4 are located between two inclined pins 3. When the hydraulic cylinder 2 is started, the generated power is transmitted to the inclined pins 3 through the output end. Because the inclined pins 3 are fixedly connected to the output end of the hydraulic cylinder 2 by bolts, the inclined pins 3 will move with the output end of the hydraulic cylinder 2.

[0027] Working principle:

[0028] The first template 5 and the second template 4, made of carbon structural steel, are placed between two support bars 1, and the opposite sides of the first template 5 and the second template 4 are provided with inclined parts 6 with an inclination angle of 30°.

[0029] When the hydraulic cylinder 2 is activated, its output end drives the inclined pin 3 to move. At this time, the first template 5 and the second template 4, located between the two support bars 1, are in a state where they can move relative to each other along a specific trajectory. As the inclined pin 3 moves, the inclined surface of the inclined pin 3 on the side near the inclined part 6 gradually approaches the inclined part 6 of the first template 5 and the second template 4.

[0030] As the inclined pin 3 continues to move, its inclined surface presses against the inclined surfaces of the first template 5 and the inclined portion 6 of the second template 4. According to the principle of inclined plane mechanics, the pressing process generates a horizontal component force, causing the first template 5 and the second template 4 to self-lock, thus meeting the self-locking requirements of the mold locking mechanism.

[0031] When mold opening is required, the control system sends an electrical signal to the solenoid directional valve. The solenoid directional valve switches the valve core position, changes the flow direction of hydraulic oil, and thus drives the inclined pin 3 away from the first template 5 and the second template 4, completing the mold opening action. At the same time, the relief valve maintains the system pressure stability, and the oil pipe ensures the transmission of hydraulic oil. As the inclined surface of the inclined pin 3 and the inclined surface of the inclined part 6 no longer squeeze, the horizontal component force disappears, the self-locking state between the first template 5 and the second template 4 is released, and the mold opening action can be performed to separate the first template 5 and the second template 4.

Claims

1. A self-locking mechanism of a clamping mechanism, comprising support bars (1), said support bars (1) being two in number, characterized in that, The support strip (1) top is provided with an oil cylinder (2), the output end of the oil cylinder (2) is fixedly connected with an inclined plug (3), two support strips (1) are provided with a first template (5), one side of the first template (5) is provided with a second template (4), the side, away from the second template (4), of the first template (5) is provided with an inclined part (6), and the side, close to the inclined part (6), of the inclined plug (3) is an inclined surface.

2. A self-locking mechanism for a lockout mechanism as defined in claim 1, wherein: The number of the oil cylinder (2) is two, and the first template (5) and the second template (4) are located between the two inclined plugs (3).

3. A self-locking mechanism for a lockout mechanism as defined in claim 1, wherein: The support strip (1) is slidably connected with the first template (5) and the second template (4) through a slide rail.

4. A self-locking mechanism for a lockout mechanism as defined in claim 1, wherein: The inclined angle of the inclined part (6) is 30°, which is adapted to the inclined surface angle of the inclined plug (3).

5. A self-locking mechanism for a lockout mechanism as defined in claim 2, wherein: The inclined plug (3) is fixedly connected with the output end of the oil cylinder (2) through a bolt.

6. A self-locking mechanism for a lockout mechanism as defined in claim 3, wherein: The support strip (1) is made of alloy steel.

7. A self-locking mechanism for a lockout mechanism as defined in claim 3 wherein: The first template (5) and the second template (4) are made of carbon structural steel.

8. A self-locking mechanism for a lockout mechanism as defined in claim 7, wherein: The inclined plug (3) is made of stainless steel.

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