An airfoil support blade forming apparatus and forming method

Abstract

The application discloses a wing type support blade forming device and forming method, relates to the field of die casting machines, and comprises a die casting machine body and a die casting base, the die casting base is installed on the bottom side of the die casting machine body, a hydraulic cylinder is installed on the die casting machine body, an upper pressing plate is installed on the hydraulic cylinder, and an upper die and a lower die are respectively installed on the upper pressing plate and the die casting base; a detection mechanism is further installed on the die casting base. The application directly acts on the gap itself by detecting the gap between the upper die and the lower die during die casting, so that the product with the gap not meeting the requirements is avoided.

Description

Technical Field

[0001] This invention relates to the field of die-casting machine technology, and in particular to an airfoil support blade forming device and forming method. Background Technology

[0002] Die casting machines are machines used for pressure casting, including both hot and cold chamber types, and later further divided into vertical and horizontal types. Under pressure, the die casting machine injects molten metal into a mold to cool and solidify, resulting in a solid metal casting after the mold is opened.

[0003] The airfoil support blades of a T-type duct direct-drive fan are important components for connecting and fixing the inner and outer casings of the fan section, and they also play a certain role in adjusting the airflow within the flow channel. Airfoil support blades are typically produced using a die-casting machine. During the die-casting process, a hydraulic cylinder drives the upper pressure plate to move, which in turn drives the upper mold to move and close with the lower mold, completing the die-casting process.

[0004] However, during die casting, the upper or lower mold can deform due to factors such as material and temperature, resulting in gaps exceeding the standard when the upper and lower molds close. Chinese utility model patent CN216359306U discloses a novel differential pressure casting mold that improves the mold's resistance to thermal deformation by designing a more uniform and reasonable distribution of mold wall thickness, thus reducing the gap between the upper and lower molds in some areas caused by thermal expansion during casting. Similarly, Chinese utility model patent CN221388842U discloses a die casting mold for metal parts that uses a downward-moving mounting block to drive a rotating buffer frame to buffer the impact force of the die. This buffer assembly, through a double buffer rod and buffer frame, avoids excessive impact on the die, preventing damage and deformation of the bottom mold and reducing its service life. In addition, Chinese utility model patent with publication number CN220278240U discloses a die-casting mold with a buffer structure. Through the cooperation of a reset bracket, a strip ring and a trapezoidal block, after the upper mold and the lower mold are closed, the strip ring can automatically fit onto the first strip post under the action of the inclined surface of the trapezoidal block. Through the cooperation of the strip ring and the first strip post, no gap can be generated between the upper mold and the lower mold, thereby preventing the gap from easily generated between the upper mold and the lower mold due to high pressure when the raw material in the die-casting mold is die-cast.

[0005] The aforementioned patents employ various measures to mitigate deformation and thus reduce gaps. However, these existing technologies, whether addressing deformation caused by temperature changes or pressure, focus on overcoming deformation caused by a single influencing factor to resolve the gap problem. In practice, however, the factors affecting mold deformation are diverse. The measures taken for single factors cannot effectively solve the final gap problem. Consequently, in practice, the gap between the upper and lower molds often results in substandard airfoil support blades produced later, affecting product quality and wasting materials. Summary of the Invention

[0006] The purpose of this invention is to provide an airfoil support blade forming device and forming method. By detecting the gap between the upper and lower molds during die casting, the device directly acts on the gap itself, thus avoiding the production of products with non-compliant gaps and solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: An airfoil support blade forming device includes a die-casting machine body and a die-casting base. The die-casting base is installed on the bottom side of the die-casting machine body. A hydraulic cylinder is installed on the die-casting machine body, and an upper pressure plate is installed on the hydraulic cylinder. An upper mold and a lower mold are respectively installed on the upper pressure plate and the die-casting base. The device also includes a detection mechanism installed on the die-casting base. The detection mechanism is used to actively detect the gap between the edges of the upper mold and the lower mold. The testing mechanism includes four testing mounting frames. The top side of each testing mounting frame is wedge-shaped. The four testing mounting frames are rectangular and are all slidably mounted on the die-casting base. Multiple plugs are slidably mounted on each testing mounting frame at equal intervals along the horizontal direction of the die-casting base, and a spring is installed between each plug and the testing mounting frame. Four pressure plates are installed on the upper pressure plate, and the four pressure plates are respectively set to correspond to the positions of the four detection mounting frames. The four pressure plates move down to squeeze the wedge-shaped parts of the four detection mounting frames, which is used to push the four detection mounting frames to move laterally.

[0008] Furthermore, in some embodiments of the present invention, four sliding grooves are provided on the top side of the die-casting base, and the four detection mounting brackets are slidably installed in the four sliding grooves respectively; A second spring is installed on the inner wall of the slide, and the other end of the second spring is installed on the detection mounting frame.

[0009] Furthermore, in some embodiments of the present invention, a release mechanism is installed on the die-casting base, the release mechanism is connected to the detection mechanism, and the detection mechanism is used to drive the release mechanism to retract the lower mold into the die-casting base.

[0010] Furthermore, in some embodiments of the present invention, the release mechanism includes a pad block that is slidably installed within the die-casting base, the lower mold is in contact with the pad block, and the pad block is used to support the lower mold.

[0011] Furthermore, in some embodiments of the present invention, springs three are installed on both sides of the pad along the horizontal direction of the die-casting base, and the other ends of the two springs three are installed on the inner wall of the die-casting base. The two springs three contract to drive the pad to slide out of the die-casting base.

[0012] Furthermore, in some embodiments of the present invention, two stop bars are rotatably mounted on one side of the die-casting base, and both stop bars block one side of the pad block; Each of the two stop bars is provided with a limiting strip installed on one side of the die-casting base. The two limiting strips are used to block the angle of the two stop bars.

[0013] Furthermore, in some embodiments of the present invention, two rotating grooves are formed on one side of the die-casting base, and the two stop rods are respectively rotatably installed in the two rotating grooves; A torsion spring is installed on the inner wall of the rotating groove, and the torsion spring is mounted on the stop bar.

[0014] Furthermore, in some embodiments of the present invention, a lower push frame is sleeved on the lower mold, the lower push frame is arc-shaped around its perimeter, and push brackets are installed at the two right angles of the lower push frame near the pad block. The two push brackets are slidably installed on the die-casting base, and the two push brackets are in contact with the two stop rods. Multiple adapter pushers are slidably mounted on the four detection mounting frames at equal intervals, and the multiple adapter pushers are in contact with the four sides of the lower push frame.

[0015] Furthermore, in some embodiments of the present invention, multiple mounting seats are installed at equal intervals on the four detection mounting frames, and push rods are rotatably mounted on the multiple mounting seats. The push rods rotate to push the adapter push frame, which is on the same vertical line as the push rod, to move horizontally. A second torsion spring is installed on the inner wall of the mounting base, and the other end of the second torsion spring is installed on the push rod.

[0016] A method for forming an airfoil support blade, which is based on the aforementioned airfoil support blade forming apparatus, includes the following steps: S1. The hydraulic cylinder starts and drives the upper pressure plate to move. The movement of the upper pressure plate causes the upper mold and the lower mold to close for die casting. The upper pressure plate moves down and drives the four pressure plates to squeeze the wedge-shaped parts of the four detection mounting brackets, pushing the detection mounting brackets to move laterally. The movement of the detection mounting brackets causes multiple plugs to move, so that the plugs are inserted into the gap between the upper mold and the lower mold, and the plugs retract. S2. The gap between the upper and lower molds is normal, allowing the plug to push the push rod to rotate; S3. If the gap between the upper mold and the lower mold is too large, the plug block will enter too much, which will prevent the plug block from pushing the push rod to rotate. After the detection mounting bracket moves into place, the push rod will push the adapter push frame to move, the adapter push frame will push the lower push frame to move down, and the lower push frame will move down, causing the two push frames to move down, which will push the two stop rods to rotate, thus actively unlocking the pad block. S4. The pad block actively unlocks. Under the contraction force of the two springs, the pad block slides out of the die-casting base and detaches from the lower mold, causing the lower mold to retract into the die-casting base.

[0017] The beneficial effects of the airfoil support blade forming device and forming method proposed in this invention are: (1) This invention abandons the conventional technical means of improving traditional die casting machines to overcome deformation. By detecting the gap between the upper and lower molds during die casting, it directly acts on the gap itself, avoiding the production of products with gaps that do not meet the requirements, thereby avoiding the production of defective products and the waste of materials.

[0018] (2) The present invention, through the setting of the detection mechanism, drives the upper pressure plate to move when the hydraulic cylinder moves down. The movement of the upper pressure plate drives the upper mold and the lower mold to close for die casting. When the upper pressure plate moves down, the four pressure plates squeeze the wedge-shaped parts of the four detection mounting brackets, thereby pushing the detection mounting brackets to move. The movement of the detection mounting brackets drives multiple plugs to move, so that the plugs are inserted into the gap between the upper mold and the lower mold, thereby achieving the purpose of actively detecting the gap between the upper mold and the lower mold.

[0019] (3) By setting up the detachment mechanism, the gap between the upper mold and the lower mold is too large, so that more of the plug block enters. This makes it impossible for the plug block to push the push rod to rotate. Therefore, after the detection mounting bracket moves into place, the push rod pushes the transfer push frame to move. The transfer push frame pushes the lower push frame to move down. The lower push frame moves down and drives the two push frames to move down. The two push frames push the two stop rods to rotate, thereby achieving the purpose of actively unlocking the pad block. At this time, the lower mold retracts into the die-casting base. Therefore, by actively detaching, it can be clearly known that there is a problem with the upper mold or the lower mold, so that the staff can deal with it in a timely manner. Attached Figure Description

[0020] Figure 1This is a three-dimensional structural schematic diagram of an airfoil support blade forming device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the connection between the detection mounting frame and the pad block of the airfoil support blade forming device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the connection between the detection mounting frame and the push-down frame of an airfoil support blade forming device according to an embodiment of the present invention. Figure 4 An airfoil support blade forming device provided in an embodiment of the present invention Figure 1 A schematic diagram of the structure of part A; Figure 5 This is a partial structural diagram illustrating the connection between the detection mounting frame and the transfer pusher of an airfoil support blade forming device according to an embodiment of the present invention. Figure 6 This is a longitudinal sectional view of the connection between the die-casting base and the pad block of an airfoil support blade forming device according to an embodiment of the present invention. Figure 7 This is a cross-sectional view of the connection between the die-casting base and the pad block of an airfoil support blade forming device according to an embodiment of the present invention. Figure 8 This is a partial cross-sectional view of the connection between the die-casting base and the stop bar of an airfoil support blade forming device according to an embodiment of the present invention. Figure 9 This is a partial structural diagram illustrating the connection between the stop bar and the pusher frame of an airfoil support blade forming device according to an embodiment of the present invention. Figure 10 This is a partial cross-sectional view of the connection between the mounting base and push rod of an airfoil support blade forming device according to an embodiment of the present invention.

[0021] In the diagram: 1. Die-casting machine body; 2. Die-casting base; 3. Hydraulic cylinder; 4. Upper pressure plate; 5. Upper mold; 6. Lower mold; 7. Detection mechanism; 71. Detection mounting frame; 72. Plug; 73. Spring 1; 74. Slide groove; 75. Spring 2; 76. Pressure plate; 8. Release mechanism; 81. Pad block; 82. Spring 3; 83. Stop bar; 84. Rotary groove; 85. Torsion spring 1; 86. Push frame; 87. Limit bar; 88. Push rod; 89. Mounting seat; 810. Torsion spring 2; 811. Lower push frame; 812. Adapter push frame. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] Example 1 Please refer to the attached instruction manual. Figures 1-5 This embodiment provides an airfoil support blade forming device, which includes a die-casting machine body 1 and a die-casting base 2. The die-casting base 2 is installed on the bottom side of the die-casting machine body 1. A hydraulic cylinder 3 is installed on the die-casting machine body 1. An upper pressure plate 4 is installed on the hydraulic cylinder 3. An upper mold 5 and a lower mold 6 are respectively installed on the upper pressure plate 4 and the die-casting base 2. The device also includes a detection mechanism 7, which is installed on the die-casting base 2. The detection mechanism 7 is used to actively detect the gap between the edges of the upper mold 5 and the lower mold 6.

[0025] This embodiment provides an airfoil support blade forming device. The detection mechanism 7 includes four detection mounting frames 71. The top side of each detection mounting frame 71 is wedge-shaped. The four detection mounting frames 71 are rectangular and are slidably mounted on the die-casting base 2. Multiple stoppers 72 are slidably mounted on the detection mounting frames 71 at equal intervals along the horizontal direction of the die-casting base 2, and springs 73 are installed between the stoppers 72 and the detection mounting frames 71. Specifically, four pressure plates 76 are mounted on the upper pressure plate 4. The four pressure plates 76 are respectively positioned corresponding to the four detection mounting frames 71. The four pressure plates 76 move downward to press the wedge-shaped portions of the four detection mounting frames 71, thereby pushing the four detection mounting frames 71 to move laterally.

[0026] In addition, as one embodiment of this example, the top side of the die-casting base 2 is provided with four sliding grooves 74, and four detection mounting brackets 71 are slidably installed in the four sliding grooves 74 respectively; a second spring 75 is installed on the inner wall of the sliding groove 74, and the other end of the second spring 75 is installed on the detection mounting bracket 71.

[0027] In summary, the working principle of the solution provided in this embodiment, that is, the corresponding molding method, is as follows: When the hydraulic cylinder 3 moves downward, it drives the upper pressure plate 4 to move. The movement of the upper pressure plate 4 causes the upper mold 5 and the lower mold 6 to close for die casting, thereby completing the production of the airfoil support blade. However, during the production process, the upper mold 5 and the lower mold 6 may deform due to material, temperature and other reasons, resulting in a gap exceeding the standard when the upper mold 5 and the lower mold 6 are closed. Therefore, when the upper pressure plate 4 moves downward, the four pressure plates 76 press the wedge-shaped parts of the four detection mounting brackets 71, thereby pushing the detection mounting brackets 71 to move. The detection mounting brackets 71 slide horizontally in the slide groove 74, and the second spring 75 is stressed. The movement of the detection mounting brackets 71 drives the movement of multiple plugs 72. The plugs 72 are inserted into the gap between the upper mold 5 and the lower mold 6, thereby causing the plugs 72 to retract and drive the first spring 73 to be stressed, thus achieving the purpose of actively detecting the gap between the upper mold 5 and the lower mold 6.

[0028] It should be emphasized that in this embodiment, the detection mounting bracket 71 is reset by spring 75 and the plug 72 is reset by spring 73. No sensor is used for triggering to avoid sensor failure due to high temperature, which would prevent the mechanism from achieving the triggering function. Furthermore, in this embodiment, the size and material of the plug 72 and its related structures are not limited. The specific size and material can be flexibly configured according to the actual size and temperature required for mold production and the parameters of large components.

[0029] Example 2 Please refer to the attached instruction manual. Figures 2-10 The airfoil support blade forming device provided in this embodiment is largely the same as that in embodiment 1. The difference is that in this embodiment, a release mechanism 8 is installed on the die-casting base 2. The release mechanism 8 is connected to the detection mechanism 7. The detection mechanism 7 is used to drive the release mechanism 8 to retract the lower mold 6 into the die-casting base 2.

[0030] Specifically, the release mechanism 8 includes a pad 81, which is slidably installed inside the die-casting base 2. The lower mold 6 is in contact with the pad 81, and the pad 81 is used to support the lower mold 6. More specifically, two springs 82 are installed on both sides of the pad 81 along the horizontal direction of the die-casting base 2. The other ends of the two springs 82 are installed on the inner wall of the die-casting base 2. The retraction of the two springs 82 is used to drive the pad 81 to slide out of the die-casting base 2.

[0031] In addition, the airfoil support blade forming device provided in this embodiment has two stop bars 83 rotatably installed on one side of the die-casting base 2, and both stop bars 83 are blocked on one side of the pad block 81; above the two stop bars 83, there are limiting strips 87 installed on one side of the die-casting base 2, and the two limiting strips 87 are used to block the angle of the two stop bars 83.

[0032] Specifically, two rotating slots 84 are opened on one side of the die-cast base 2, and two stop rods 83 are rotatably installed in the two rotating slots 84 respectively; a torsion spring 85 is installed on the inner wall of the rotating slot 84, and the torsion spring 85 is installed on the stop rod 83.

[0033] More specifically, a lower push frame 811 is fitted onto the lower mold 6. The lower push frame 811 is arc-shaped on all four sides. Push brackets 86 are installed at the two right angles of the lower push frame 811 near the pad block 81. The two push brackets 86 are slidably installed on the die-casting base 2 and are in contact with the two stop rods 83. Multiple adapter push brackets 812 are slidably installed at equal intervals on the four detection mounting brackets 71. The multiple adapter push brackets 812 are in contact with the four sides of the lower push frame 811.

[0034] In addition, as one embodiment of this example, multiple mounting seats 89 are installed at equal intervals on the four detection mounting brackets 71. Each mounting seat 89 is rotatably mounted with a push rod 88. The push rod 88 rotates to push the adapter push frame 812, which is on the same vertical line as the push rod 88, to move horizontally. A second torsion spring 810 is installed on the inner wall of the mounting seat 89, and the other end of the second torsion spring 810 is installed on the push rod 88.

[0035] In summary, the working principle, or corresponding forming method, of the airfoil support blade forming device provided in this embodiment is as follows: When the gap between the upper mold 5 and the lower mold 6 is normal, the plug 72 pushes the push rod 88 to rotate. The push rod 88 rotates on the mounting base 89, and the torsion spring 810 is stressed. If the gap between the upper mold 5 and the lower mold 6 is too large, the plug 72 will enter too much, and the plug 72 will not be able to push the push rod 88 to rotate. Therefore, after the detection mounting bracket 71 moves into place, the push rod 88 pushes the adapter push bracket 812 to move. The adapter push bracket 812 pushes the lower push frame 811 to move down. The lower push frame 811 moves down, causing the two push brackets 86 to move down. The two push brackets 86 push the two stop rods 83 to rotate, thereby achieving the purpose of actively unlocking the pad block 81. Furthermore, the stop lever 83 rotates within the rotating groove 84, causing the torsion spring 85 to be stressed. Utilizing the lever principle, the pusher 86 only needs to move a short distance to allow the stop lever 83 to rotate at a large angle, actively unlocking the pad 81. In addition, under the contraction force of the two springs 82, the pad 81 slides out of the die-casting base 2 and detaches from the lower mold 6. At this time, the lower mold 6 retracts into the die-casting base 2. Therefore, by actively detaching, it can be clearly determined whether there is a problem with the upper mold 5 or the lower mold 6, thus facilitating timely handling by the staff.

[0036] In addition, in this embodiment, the connection between the push rod 88 and the mounting base 89, and the connection between the die-casting base 2 and the stop rod 83, are both resettable rotating mechanisms, specifically torsion spring 810 and torsion spring 85. It should be emphasized that in other embodiments of the present invention, the resettable rotating mechanism is not limited to the one listed above; other rotating reset mechanisms are also possible. For example, the resettable rotating mechanism can be implemented using a spring, rubber band, or other similar technology, as long as it achieves the aforementioned technical effects and functions. Furthermore, a buffer pad can be provided on the inner wall of the bottom side of the die-casting base 2 to effectively buffer the lower mold 6 when it sinks, preventing vibration damage caused by the direct fall of the lower mold 6. A buffer spring or similar buffering method can also be used, as long as it achieves the aforementioned technical effects and functions.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An airfoil support blade forming device, comprising a die-casting machine body (1) and a die-casting base (2), wherein the die-casting base (2) is installed on the bottom side of the die-casting machine body (1), a hydraulic cylinder (3) is installed on the die-casting machine body (1), an upper pressure plate (4) is installed on the hydraulic cylinder (3), and an upper mold (5) and a lower mold (6) are respectively installed on the upper pressure plate (4) and the die-casting base (2), characterized in that: It also includes a detection mechanism (7), which is installed on the die-casting base (2) and is used to detect the gap between the edges of the upper mold (5) and the lower mold (6); The testing mechanism (7) includes four testing mounting brackets (71). The top side of each testing mounting bracket (71) is wedge-shaped. The four testing mounting brackets (71) are rectangular. All four testing mounting brackets (71) are slidably mounted on the die-casting base (2). Multiple plugs (72) are slidably mounted on each testing mounting bracket (71) at equal intervals along the horizontal direction of the die-casting base (2). A spring (73) is installed between each plug (72) and the testing mounting bracket (71). Four pressure plates (76) are installed on the upper pressure plate (4). The four pressure plates (76) are respectively positioned corresponding to the four detection mounting frames (71). The four pressure plates (76) move down to squeeze the wedge-shaped parts of the four detection mounting frames (71) to push the four detection mounting frames (71) to move laterally.

2. The airfoil support blade forming device according to claim 1, characterized in that, The die-cast base (2) has four sliding grooves (74) on its top side, and the four detection mounting brackets (71) are slidably installed in the four sliding grooves (74); A second spring (75) is installed on the inner wall of the slide (74), and the other end of the second spring (75) is installed on the detection mounting bracket (71).

3. The airfoil support blade forming device according to claim 1, characterized in that, A release mechanism (8) is installed on the die-casting base (2). The release mechanism (8) is connected to the detection mechanism (7) in a transmission manner. The detection mechanism (7) is used to drive the release mechanism (8) to retract the lower mold (6) into the die-casting base (2).

4. The airfoil support blade forming device according to claim 3, characterized in that, The release mechanism (8) includes a pad (81) which is slidably installed in the die-casting base (2). The lower mold (6) is in contact with the pad (81) and the pad (81) is used to support the lower mold (6).

5. The airfoil support blade forming device according to claim 4, characterized in that, Both sides of the pad (81) are equipped with springs (82) along the horizontal direction of the die-casting base (2). The other ends of the two springs (82) are installed on the inner wall of the die-casting base (2). The two springs (82) retract to drive the pad (81) to slide out of the die-casting base (2).

6. The airfoil support blade forming device according to claim 5, characterized in that, Two stop bars (83) are rotatably installed on one side of the die-casting base (2), and both stop bars (83) block one side of the pad block (81); Each of the two stop bars (83) is provided with a limiting strip (87) installed on one side of the die-cast base (2), and the two limiting strips (87) are used to block the angle of the two stop bars (83).

7. The airfoil support blade forming device according to claim 6, characterized in that, Two rotating slots (84) are provided on one side of the die-cast base (2), and the two stop bars (83) are respectively rotatably installed in the two rotating slots (84); A torsion spring (85) is installed on the inner wall of the rotating groove (84), and the torsion spring (85) is installed on the stop bar (83).

8. The airfoil support blade forming device according to claim 7, characterized in that, The lower mold (6) is fitted with a lower push frame (811), the lower push frame (811) is arc-shaped around its perimeter, and push brackets (86) are installed at the two right angles of the lower push frame (81) near the pad block (81). The two push brackets (86) are slidably installed on the die-casting base (2), and the two push brackets (86) are in contact with the two stop rods (83). Multiple adapter pushers (812) are slidably installed at equal intervals on the four detection mounting brackets (71), and the multiple adapter pushers (812) are in contact with the periphery of the lower push frame (811).

9. The airfoil support blade forming device according to claim 8, characterized in that, Multiple mounting seats (89) are installed at equal intervals on the four detection mounting frames (71). Each mounting seat (89) is rotatably mounted with a push rod (88). The push rod (88) rotates to push the adapter push frame (812) on the same vertical line as the push rod (88) to move horizontally. A second torsion spring (810) is installed on the inner wall of the mounting base (89), and the other end of the second torsion spring (810) is installed on the push rod (88).

10. A method for forming an airfoil support blade, wherein the airfoil support blade forming apparatus according to any one of claims 1-9 is used, characterized in that, Includes the following steps: S1. The hydraulic cylinder (3) starts and drives the upper pressure plate (4) to move. The movement of the upper pressure plate (4) drives the upper mold (5) and the lower mold (6) to close for die casting. The upper pressure plate (4) moves down and drives the four pressure plates (76) to squeeze the wedge-shaped parts of the four detection mounting brackets (71), pushing the detection mounting brackets (71) to move laterally. The movement of the detection mounting brackets (71) drives multiple plugs (72) to move, so that the plugs (72) are inserted into the gap between the upper mold (5) and the lower mold (6), and the plugs (72) retract. S2. The gap between the upper mold (5) and the lower mold (6) is normal, so that the plug (72) pushes the push rod (88) to rotate; S3. The gap between the upper mold (5) and the lower mold (6) is too large, causing the plug (72) to enter too much, which makes it impossible for the plug (72) to push the push rod (88) to rotate. After the detection mounting bracket (71) moves into place, the push rod (88) pushes the adapter push bracket (812) to move, the adapter push bracket (812) pushes the lower push frame (811) to move down, and the lower push frame (811) moves down, causing the two push brackets (86) to move down, so that the two push brackets (86) push the two stop rods (83) to rotate, and actively unlock the pad (81). S4. The pad (81) is actively unlocked. Under the contraction force of the two springs (82), the pad (81) slides out of the die-casting base (2) and disengages from the lower mold (6), causing the lower mold (6) to retract into the die-casting base (2).

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