Die casting three-plate mold opening and closing device

Abstract

The utility model provides a die casting three board mould switch, relate to mould switch field, including linear arrangement B board, A board and C board along the default direction, wherein A board is in the middle, and B board and C board are separately arranged on both sides of A board, still include the lock block of setting on A board, first dolly rod rotatably installed on B board, is equipped with the recess groove of cooperation with lock block on first dolly rod, is used for locking B board with A board at locking position, still have the second dolly rod of fixing on C board, wherein, when C board moves the predetermined distance relative to A board, second dolly rod drives first dolly rod to rotate from locking position to unlocking position, to make recess groove and lock block separate, and unlock B board with A board. Mechanical switch uses mould opening movement to realize the opening and closing process of mechanical part, thereby realizes twice mould opening process of three board mould, and this set of switch can design the component of strength matching according to the size of mould, and the more wide and safe and reliable adaptation range.

Description

Technical Field

[0001] This utility model relates to the field of mold opening and closing devices, and in particular to a die-casting three-plate mold opening and closing device. Background Technology

[0002] In the field of mold technology, traditional plastic three-plate molds and small die-casting three-plate molds, due to their relatively small weight, can usually be effectively opened using ordinary standard opening and closing devices that rely on friction. However, in die-casting mold design practice, for some large-tonnage die-casting three-plate molds, their significant self-weight often makes it difficult to achieve a stable mold opening process. In such cases, if conventional ordinary opening and closing devices are continued to be used, it is difficult to ensure the reliability and stability of the mold opening action. This problem directly affects the normal operation and production efficiency of large die-casting three-plate molds and urgently needs to be solved. Utility Model Content

[0003] The purpose of this utility model is to provide a die-casting three-plate mold opening and closing device to solve the above-mentioned technical problems.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: A die-casting three-plate mold opening and closing device includes plates B, A, and C arranged in a straight line along a preset direction, wherein plate A is in the center and plates B and C are respectively located on both sides of plate A. It also includes a locking block disposed on plate A, and a first lever rotatably mounted on plate B. The first lever has a groove that mates with the locking block for locking plate B and plate A in the locked position. There is also a second lever fixed on the C plate, wherein when the C plate moves a predetermined distance relative to the A plate, the second lever drives the first lever to rotate from the locked position to the unlocked position, so that the groove disengages from the lock block and unlocks the B plate from the A plate.

[0005] Preferably, the first lever has a first protrusion, and the second lever rotates the first lever by pushing the first protrusion.

[0006] Preferably, the second lever is provided with a second protrusion, which abuts against the first protrusion and pushes the first protrusion during the movement of the C plate.

[0007] Preferably, it also includes a spring connected between the first lever and plate B, for applying a restoring force to the first lever to bring it toward the locked position.

[0008] Preferably, plate B is further provided with a limiting pin for limiting the rotation range of the first lever.

[0009] Preferably, plate A is further provided with a support pin for supporting the second lever.

[0010] Preferably, the groove is located at the first protrusion, and when the first lever is in the locked position, the groove engages with the locking block.

[0011] The beneficial effects of this utility model are: 1. This utility model solves the mold opening problem of large-tonnage die-casting three-plate molds, making the operation of the three-plate mold more stable and reliable, greatly improving production efficiency, and completely avoiding the drawback of traditional openers and closers causing the mold to fail to produce normally due to reduced friction.

[0012] 2. The mechanical opener and closer utilizes the mold opening motion to realize the opening and closing process of mechanical parts, thereby realizing the two opening processes of a three-plate mold. This set of openers and closers can be designed with strength-matched components according to the size of the mold, making it more adaptable and safer and more reliable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a die-casting three-plate mold opening and closing device in a locked state. Figure 2 for Figure 1 The diagram shows the structure of the opener / closer in the unlocked state. Figure 3 for Figure 2 The diagram shows the structure of the opening and closing device after the three-plate mold is completely separated; Reference numerals in the attached diagram: 1. Plate A; 2. Plate B; 3. Plate C; 4. First lever; 5. First protrusion; 6. Groove; 7. Second lever; 8. Second protrusion; 9. Locking block; 10. Limiting pin; 11. Supporting pin; 12. Spring. Detailed Implementation

[0014] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0016] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0017] Example 1 This embodiment presents a die-casting three-plate mold opening and closing device; please refer to [link / reference]. Figures 1-3The opening and closing device is used in a three-plate mold, which mainly includes plate B2, plate A1 and plate C3 arranged in a straight line along a preset opening direction. The opening and closing device mainly includes a locking block 9 set on plate A1, a first lever 4 rotatably mounted on plate B2, and a second lever 7 fixed on plate C3.

[0018] Specifically, the locking block 9 is firmly fixed to the side of plate A 1. Its shape, size and position are precisely designed to engage with the first lever 4. The first lever 4 is rotatably mounted on the side of plate B 2 via a pin (not shown). The first lever 4 has a groove 6, the shape and depth of which match the shape of the locking block 9. When the first lever 4 is in the locked position, the groove 6 can reliably engage with the locking block 9, thereby firmly locking plate B 2 and plate A 1 together and keeping them relatively stationary in the early stage of mold opening.

[0019] To achieve the driving between the levers, a first protrusion 5 is provided on the first lever 4, and a second protrusion 8 is provided on the second lever 7. The second lever 7 is firmly fixed to the side of the C plate 3, so it moves with the C plate 3. During the mold opening process, when the C plate 3 moves, the second protrusion 8 on it will contact and push the first protrusion 5 on the first lever 4. In a preferred design, the groove 6 can be directly set at a specific position of the first protrusion 5. This integrated design makes the structure more compact. The first protrusion 5 not only serves as the force point to be driven, but also partially forms the locking groove 6, achieving a unity of function and structure. To ensure that the first lever 4 can automatically return to the locked position when no external force is applied, this embodiment also includes a spring 12. One end of the spring 12 is connected to the first lever 4, and the other end is connected to the B plate 2. The spring 12 always applies a reset torque to the first lever 4, giving it a tendency to automatically move towards the locked position. In this way, when the mold closing or unlocking conditions disappear, the first lever 4 can automatically reset and lock with the locking block 9, preparing for the next mold opening.

[0020] To precisely control the rotation range of the first lever 4 and prevent excessive rotation that could cause the mechanism to jam or be damaged, a limiting pin 10 is provided on plate B 2. The limiting pin 10 can engage with the side edge of the first lever 4, thereby limiting the rotation angle of the first lever 4 to a predetermined range between the locked position and the fully unlocked position. Furthermore, to provide stable support and guidance for the first lever 4 during the movement of the second lever 7, preventing it from bending or shifting under force, a support pin 11 can be provided on plate A 1. During the movement of plate C 3, the body of the second lever 7 can rest against or slide past the support pin 11, ensuring smooth and efficient force transmission.

[0021] The work process is described as follows: Please see Figure 1 When the mold is fully closed, plates A1, B2 and C3 fit tightly together. Under the restoring force of spring 12, the first lever 4 is in its locked position, and the groove 6 on it is fully engaged with the locking block 9 on plate A1, locking plate B2 and plate A1. At this time, there is a preset gap between the second lever 7 on plate C3 and the first protrusion 5 on the first lever 4.

[0022] Please see Figure 2 When the mold starts to open, plate C3 first moves backward relative to plate A1 and plate B2. Since plate B2 and plate A1 are locked by the first lever 4 and the locking block 9, they remain relatively stationary. As plate C3 moves, it drives the fixed second lever 7 to move as well, until the second protrusion 8 on the second lever 7 contacts the first protrusion 5 on the first lever 4. This distance that plate C3 moves is the "predetermined distance".

[0023] Please see Figure 3 As plate C3 continues to move backward, the second lever 7 continuously pushes the first protrusion 5 of the first lever 4 via its second protrusion 8, forcing the first lever 4 to rotate around its pin against the tension of the spring 12. As the first lever 4 rotates, its groove 6 gradually disengages from the locking block 9. When the first lever 4 rotates to the unlocking position defined by the limiting pin 10, the groove 6 completely separates from the locking block 9, thus releasing the locking state between plate B2 and plate A1.

[0024] When the mold closes, plate B2 moves towards plate A1 and closes the mold, followed by plate C3 moving towards plate B2. During this process, the second lever 7 disengages from the first lever 4, and the restoring force of the spring 12 causes the first lever 4 to automatically rotate back to the locking position. When plate B2 and plate A1 are fully fitted, the locking block 9 is precisely aligned with the groove 6, and the first lever 4, under the action of the spring force, clicks to lock, preparing for the next cycle.

[0025] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0026] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A die casting three-plate mold opener characterized by: It includes plates B, A, and C arranged in a straight line along a preset direction, with plate A in the center and plates B and C on either side of plate A. It also includes a locking block disposed on plate A, and a first lever rotatably mounted on plate B. The first lever has a groove that mates with the locking block for locking plate B and plate A in the locked position. There is also a second lever fixed on the C plate, wherein when the C plate moves a predetermined distance relative to the A plate, the second lever drives the first lever to rotate from the locked position to the unlocked position, so that the groove disengages from the locking block and unlocks the B plate from the A plate.

2. A die casting three plate mold opener according to claim 1, characterized in that: The first lever has a first protrusion, and the second lever rotates the first lever by pushing the first protrusion.

3. A die casting three plate mold opener and closer according to claim 2, characterized in that: The second lever is provided with a second protrusion. During the movement of the C plate, the second protrusion abuts against the first protrusion and pushes the first protrusion.

4. A die casting three plate mold opener according to any one of claims 1 to 3, characterized in that: It also includes a spring connected between the first lever and plate B, which is used to apply a restoring force to the first lever to make it tend to the locked position.

5. A die casting three plate mold opener and closer according to claim 1, characterized in that: Plate B is also equipped with a limiting pin to restrict the rotation range of the first lever.

6. A die casting three plate mold opener and closer according to claim 1 wherein: Plate A is also provided with a support pin for supporting the second lever.

7. A three plate die casting mold opener according to claim 2 or 3, characterized in that: The groove is on the first protrusion, and when the first lever is in the locked position, the groove engages with the locking block.

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