Forming die of wiring terminal

Abstract

The invention belongs to the technical field of wiring terminal forming, and discloses a wiring terminal forming die which comprises an upper guide plate and a lower guide plate which are symmetrically arranged, four corners between the two guide plates are movably sleeved with guide rods, and the two guide plates move up and down relative to the guide rods. Casting dies are symmetrically arranged between the two guide plates up and down, and air cylinders are fixedly installed at the ends, close to each other, of the two guide plates. According to the invention, the cooperation among the linkage assembly, the gas storage assembly and the auxiliary locking assembly is utilized, so that after the wiring terminal is placed in place, the wiring terminal can be quickly fixed, and the fixed wiring terminal is all located in the casting die and does not need to be fixed by using an external device, and in the whole processing process, the production efficiency is greatly improved. The clamping and loosening processes of the mechanical terminal can be rapidly carried out according to needs, the whole process and the die-casting process are completed in a linkage mode, and the die-casting forming efficiency is remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of terminal block molding technology, specifically a terminal block molding mold. Background Technology

[0002] The forming mold for terminal blocks is a key tool in the production of terminal blocks, determining the quality of the terminals in terms of shape, size, and precision during manufacturing. The mold structure varies depending on the shape of the terminal and its application requirements. Stamping dies are generally used to produce simpler terminal shapes, while more complex shapes require more precise injection molds. The precision of the forming mold directly affects the quality of the terminal blocks, especially during production, where the mold's fit precision, stamping pressure, and temperature control system adjustments all require strict control. High-quality forming molds ensure that the terminal blocks exhibit good conductivity, stability, and safety during use.

[0003] Conventional die-casting molds for terminals mainly consist of an upper mold, a lower mold, and a guiding device. During the molding process, the terminal mold to be die-cast is placed between the two molds, and the upper and lower molds are controlled to guide and apply pressure to achieve the molding process. However, in order to prevent the terminal from shifting during the molding process, an external device is required to fix it. Throughout the molding process, the external fixing device needs to be frequently operated to fix and loosen the terminal, making the entire operation process quite cumbersome.

[0004] Meanwhile, in order to prevent injury to operators during the entire die-casting process, protective devices are usually installed. The protective devices need to be turned on before die-casting and turned off after die-casting. At the same time, mold guiding and positioning are also required, which makes it impossible to achieve rapid die-casting of terminals and affects die-casting efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a molding die for a terminal block to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a forming mold for a terminal block, comprising two symmetrically arranged guide plates, with guide rods movably sleeved at the four corners between the two guide plates, the two guide plates moving vertically relative to the guide rods, a casting mold symmetrically arranged between the two guide plates, a cylinder fixedly installed at the relatively close ends of the two guide plates, the output end of the cylinder connected to the casting mold, an extension frame installed near the right side between the two guide plates, an mounting plate located on one side of the casting mold installed near the left side of the extension frame, extension guide rails fixedly installed axially at equal intervals on the outer side of the mounting plate, an auxiliary locking component movably engaged inside the extension guide rails, an air storage component fixedly sleeved in the middle of the extension frame, the left side of the air storage component connected to the auxiliary locking component, a linkage component installed on the right side of the air storage component, the upper and lower ends of the linkage component connected to one side of the two guide plates, and the right side of the linkage component connected to an external hydraulic cylinder;

[0007] The external hydraulic cylinder controls the vertical displacement of the two guide plates through the linkage assembly, and acts on the air storage assembly. The air storage assembly then acts on the auxiliary locking assembly, causing the auxiliary locking assembly to deform and complete the process of fixing the wiring terminal.

[0008] Before forming the terminal block, the terminal block to be die-cast must be pushed between two die-casting molds, and the right end of the mechanical terminal block must be aligned with the auxiliary locking component. At the same time, the external hydraulic cylinder and the linkage component must be connected to complete the preparation before die-casting.

[0009] As a further technical solution of the present invention, the linkage component includes a linkage plate, the left side of the linkage plate is connected to the air storage component, and a first fixing seat is fixedly installed at each of the four corners of the linkage plate near the air storage component. The right side of the linkage plate is connected to the output end of the external oil cylinder.

[0010] As a further technical solution of the present invention, the gas storage assembly includes a gas storage pipe, the outer side of the gas storage pipe is fixedly sleeved with an extension frame, a piston plate is movably sleeved inside the gas storage pipe, an extension rod is fixedly installed at the right end of the piston plate, and the right end of the extension rod passes through the right end of the gas storage pipe and is connected to the linkage plate.

[0011] As a further technical solution of the present invention, a piston rod is fixedly installed on the left side of the piston plate. The left side of the piston rod passes through the left side of the gas storage pipe and is connected to the auxiliary locking assembly. The auxiliary locking assembly is installed axially at equal intervals on one side of the piston rod. A limit spring is movably sleeved on the outer side of the piston rod. The left and right ends of the limit spring are respectively connected to one end of the gas storage pipe and one end of the piston plate.

[0012] During die casting, the external hydraulic cylinder is activated, driving the linkage plate to move to the right. When the linkage plate moves to the right, the extension rod can be pulled to move to the right, simultaneously driving the piston plate to move to the right. At this time, the limit spring can be stretched, driving the piston rod to move to the right, thus completing the power transmission.

[0013] As a further technical solution of the present invention, the auxiliary locking component includes a third fixed seat, one end of which is connected to the piston rod, and the end of the third fixed seat away from the piston rod is movably connected to a connecting rod via a rotating shaft, and the end of the connecting rod away from the third fixed seat is movably connected to a fourth fixed seat via a rotating shaft.

[0014] As a further technical solution of the present invention, a guide block is fixedly installed at the end of the fourth fixed seat away from the connecting rod. The guide block is movably engaged with the extension guide rail. A support plate is fixedly installed on the left side of the guide block. The support plate is located on the right side between the two casting molds.

[0015] When the piston rod moves to the right, the third fixed seat moves to the right as well, and applies a pulling force to the fourth fixed seat. At this time, multiple fourth fixed seats deflect towards the center and apply a force to the guide block. Multiple guide blocks then move towards the center of the mounting plate, and drive multiple support plates to move towards the center of the mounting plate until they contact one end of the terminal block. At this time, the terminal block is limited at one end, which helps to complete the subsequent die-casting process.

[0016] By utilizing the coordinated action of the linkage component, the gas storage component, and the auxiliary locking component, the terminal block can be quickly fixed after being placed in position. After fixing, all the terminal blocks are located inside the die-casting mold, eliminating the need for external devices for fixation. Throughout the entire processing, the clamping and loosening of the mechanical terminals can be performed quickly as needed, and the entire process is completed in conjunction with the die-casting process, significantly improving the die-casting efficiency.

[0017] As a further technical solution of the present invention, the end of the first fixed seat away from the linkage plate is movably connected to a linkage rod through a rotating shaft, and the end of the linkage rod away from the first fixed seat is movably connected to a second fixed seat through a rotating shaft. The two sets of symmetrically arranged second fixed seats are respectively connected to the upper and lower guide plates.

[0018] When the linkage plate moves to the right, that is, when the device fixes the wiring terminal, the linkage rod deflects towards the center of the linkage plate. At this time, a pushing force is applied to the upper and lower second fixing seats, which in turn press the guide plate. The upper and lower guide plates move closer to each other under the guidance of the guide rod. Conversely, when the fixing of the wiring terminal is loosened, the upper and lower guide plates move further apart, automatically completing the opening and closing process of the protection.

[0019] Once the terminals are installed in place, the upper and lower cylinders can be activated to drive the upper and lower die-casting molds closer together, applying pressure to the terminals between them to complete the die-casting process.

[0020] It provides coordination between the linkage component and the guide plate, as well as between the linkage component and the auxiliary locking component, so that the device can automatically complete the protection process when the terminal is limited and fixed, and automatically close the protection when the limit is released. The whole process is completed quickly, and the die-casting process can be carried out quickly after the protection is in place, which significantly shortens the overall waiting time and improves the overall molding efficiency.

[0021] As a further technical solution of the present invention, a three-way valve is fixedly installed in the middle of the mounting plate, and the left side of the three-way valve is located between the two casting molds. The upper and lower ends of the gas storage pipe near the left side are both fixedly connected to gas supply valves.

[0022] As a further technical solution of the present invention, when the limiting spring is in the initial state, the piston plate is in the leftmost position, and at this time the piston plate is still in the right position of the gas supply valve. The upper and lower ends of the three-way valve near the right side are fixedly connected to the gas supply pipe, and the other end of the gas supply pipe is fixedly connected to the gas supply valve.

[0023] Simultaneously, before the terminal block is fixed, the piston plate moves to the right, creating negative pressure inside the air storage tube. External air is then drawn into the air storage tube via the three-way valve, air supply pipe, and air valve for temporary storage. When the terminal block is die-cast, the fixing of the terminal block needs to be loosened and its position adjusted. When the fixing of the terminal block is released, the piston plate moves to the left, and the compressed air inside the air storage tube passes through the air supply valve and air supply pipe, and is then discharged through the three-way valve to act on the terminal block surface, completing the self-cleaning process.

[0024] By utilizing the coordinated action of the linkage components, auxiliary locking components, air storage components, and three-way valve, the device can temporarily store air when fixing the terminal block, and quickly clean its surface when the terminal block limit is released. The entire process is completed automatically, and cleaning can be performed automatically after the terminal block has been die-cast once, reducing surface scratches and improving the overall molding quality.

[0025] The beneficial effects of this invention are as follows:

[0026] (1) This invention utilizes the cooperation between the linkage component, the gas storage component, and the auxiliary locking component to quickly fix the terminal after it is placed in place. After fixing, all the terminal is located inside the die-casting mold and no external device is needed for fixing. During the entire processing, the mechanical terminal can be clamped and released quickly as needed. The entire process is completed in conjunction with the die-casting process, which significantly improves the die-casting efficiency.

[0027] (2) By cooperating with the linkage component and the guide plate, as well as the linkage component and the auxiliary locking component, the present invention enables the device to automatically complete the protection process when the terminal is fixed, and automatically close the protection when the limit is released. The whole process is completed quickly, and the die-casting process can be carried out quickly after the protection is in place, which significantly shortens the overall waiting time and improves the overall molding efficiency.

[0028] (3) By utilizing the linkage component, the auxiliary locking component, the air storage component and the three-way valve, the present invention enables the device to temporarily store air when fixing the terminal block, and to quickly clean the surface of the terminal block when the terminal block limit is released. The whole process is completed automatically, and the terminal block can be automatically cleaned after one die casting, reducing surface scratches and improving the overall molding quality. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram showing the fit between the guide plate, the casting mold, and the extension frame structure of the present invention;

[0031] Figure 3 This is a schematic diagram showing the cooperation of the linkage component, gas storage component, and auxiliary locking component structure of the present invention;

[0032] Figure 4 This is a separate schematic diagram of the linkage component structure of the present invention;

[0033] Figure 5 This is a separate cross-sectional schematic diagram of the gas storage component structure of the present invention;

[0034] Figure 6 This is a cross-sectional schematic diagram of the extended guide rail, three-way valve, and gas pipeline structure of the present invention.

[0035] Figure 7 This is an exploded view of the extended guide rail and auxiliary locking component structure of the present invention.

[0036] In the diagram: 1. Guide plate; 2. Guide rod; 3. Cylinder; 4. Casting mold; 5. Extension frame; 6. Linkage assembly; 601. Linkage plate; 602. First fixed seat; 603. Second fixed seat; 604. Linkage rod; 7. Air storage assembly; 701. Air storage pipe; 702. Piston plate; 703. Piston rod; 704. Extension rod; 705. Air supply valve; 706. Limit spring; 8. Mounting plate; 9. Extension guide rail; 10. Three-way valve; 11. Air supply pipe; 12. Auxiliary locking assembly; 121. Third fixed seat; 122. Fourth fixed seat; 123. Connecting rod; 124. Guide block; 125. Support plate. Detailed Implementation

[0037] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figures 1 to 7 As shown in the embodiment of the present invention, a forming mold for a terminal block includes two symmetrically arranged guide plates 1. Guide rods 2 are movably sleeved at the four corners between the two guide plates 1. The two guide plates 1 move up and down relative to the guide rods 2. A casting mold 4 is symmetrically arranged between the two guide plates 1. A cylinder 3 is fixedly installed at the relatively close end of each of the two guide plates 1. The output end of the cylinder 3 is connected to the casting mold 4. An extension frame 5 is installed near the right side between the two guide plates 1. An installation plate 8 located on one side of the casting mold 4 is installed near the left side of the extension frame 5. An extension guide rail 9 is fixedly installed axially at equal intervals on the outer side of the installation plate 8. An auxiliary locking component 12 is movably engaged inside the extension guide rail 9. An air storage component 7 is fixedly sleeved in the middle of the extension frame 5. The left side of the air storage component 7 is connected to the auxiliary locking component 12. A linkage component 6 is installed on the right side of the air storage component 7. The upper and lower ends of the linkage component 6 are connected to one side of the two guide plates 1. The right side of the linkage component 6 is connected to an external hydraulic cylinder.

[0039] The external hydraulic cylinder controls the vertical displacement of the two guide plates 1 through the linkage component 6, and acts on the air storage component 7. The air storage component 7 acts on the auxiliary locking component 12, causing the auxiliary locking component 12 to deform and complete the fixing process of the wiring terminal.

[0040] The upper and lower ends of the extension frame 5 are made of telescopic rods, and the length of the upper and lower ends of the extension frame 5 can be changed due to the relative displacement of the two guide plates 1.

[0041] Before the terminal block is formed, the terminal block to be die-cast must be pushed between the two die-casting molds 4, and the right end of the mechanical terminal block must be aligned with the auxiliary locking component 12. At the same time, the external hydraulic cylinder and the linkage component 6 must be connected to complete the preparation before die-casting.

[0042] like Figure 1 and Figure 3 as well as Figure 4 As shown, the linkage assembly 6 includes a linkage plate 601. The left side of the linkage plate 601 is connected to the air storage assembly 7. First fixing seats 602 are fixedly installed at the four corners of the linkage plate 601 near the air storage assembly 7. The right side of the linkage plate 601 is connected to the output end of the external hydraulic cylinder. The air storage assembly 7 includes an air storage pipe 701. The outer side of the air storage pipe 701 is fixedly sleeved with the extension frame 5. A piston plate 702 is movably sleeved inside the air storage pipe 701. An extension rod 704 is fixedly installed at the right end of the piston plate 702. The right end of 704 passes through the right end of the gas storage pipe 701 and is connected to the linkage plate 601. The piston rod 703 is fixedly installed on the left side of the piston plate 702. The left side of the piston rod 703 passes through the left side of the gas storage pipe 701 and is connected to the auxiliary locking component 12. The auxiliary locking component 12 is installed axially at equal intervals on one side of the piston rod 703. The outer side of the piston rod 703 is movably sleeved with a limit spring 706. The left and right ends of the limit spring 706 are respectively connected to one end of the gas storage pipe 701 and one end of the piston plate 702.

[0043] During die casting, the external hydraulic cylinder is activated, and the linkage plate 601 is driven to move to the right. When the linkage plate 601 moves to the right, the extension rod 704 can be pulled to move to the right, which in turn drives the piston plate 702 to move to the right. At this time, the limit spring 706 can be stretched, and the piston rod 703 moves to the right, thus completing the power transmission.

[0044] like Figure 3 and Figure 7As shown, the auxiliary locking assembly 12 includes a third fixed seat 121. One end of the third fixed seat 121 is connected to the piston rod 703. The end of the third fixed seat 121 away from the piston rod 703 is movably connected to a connecting rod 123 via a rotating shaft. The end of the connecting rod 123 away from the third fixed seat 121 is movably connected to a fourth fixed seat 122 via a rotating shaft. The end of the fourth fixed seat 122 away from the connecting rod 123 is fixedly mounted with a guide block 124. The guide block 124 is movably engaged with the extension guide rail 9. The left side of the guide block 124 is fixedly mounted with a support plate 125. The support plate 125 is located on the right side between the two casting molds 4.

[0045] Example 1: When the piston rod 703 moves to the right, the third fixed seat 121 moves to the right and applies a pulling force to the fourth fixed seat 122. At this time, the multiple fourth fixed seats 122 deflect towards the center and apply a force to the guide block 124. The multiple guide blocks 124 move towards the center of the mounting plate 8 and drive the multiple support plates 125 to move towards the center of the mounting plate 8 until they contact one end of the terminal block. At this time, the terminal block is limited at one end, which helps to complete the subsequent die-casting process.

[0046] By utilizing the cooperation between the linkage component 6, the gas storage component 7, and the auxiliary locking component 12, the terminal block can be quickly fixed after being placed in place. After fixing, all the terminal blocks are located inside the die-casting mold 4, without the need for external devices for fixing. During the entire processing, the clamping and loosening of the mechanical terminals can be performed quickly as needed, and the entire process is completed in conjunction with the die-casting process, significantly improving the die-casting efficiency.

[0047] like Figure 1 and Figure 3 as well as Figure 4 As shown, the end of the first fixed seat 602 away from the linkage plate 601 is movably connected to the linkage rod 604 through a rotating shaft. The end of the linkage rod 604 away from the first fixed seat 602 is movably connected to the second fixed seat 603 through a rotating shaft. The two sets of symmetrically arranged second fixed seats 603 are respectively connected to the upper and lower guide plates 1.

[0048] Example 2: When the linkage plate 601 moves to the right, that is, when the device fixes the terminal block, the linkage rod 604 deflects towards the middle of the linkage plate 601. At this time, a pushing force is applied to the upper and lower second fixing seats 603, and the upper and lower second fixing seats 603 press on the guide plate 1. The upper and lower guide plates 1 can then move closer to each other under the guidance of the guide rod 2. Conversely, when the terminal block is loosened, the upper and lower guide plates 1 move further apart, automatically completing the opening and closing process of the protection.

[0049] Once the terminals are installed in place, the upper and lower cylinders 3 can be activated to drive the upper and lower die-casting molds 4 closer together, applying pressure to the terminals between them to complete the die-casting process.

[0050] Through the cooperation between the linkage component 6 and the guide plate 1, as well as between the linkage component 6 and the auxiliary locking component 12, the device can automatically complete the protection process when the terminal block is limited and fixed, and automatically close the protection when the limit is released. The whole process is completed quickly, and the die-casting process can be carried out quickly after the protection is in place, which significantly shortens the overall waiting time and improves the overall molding efficiency.

[0051] like Figure 3 and Figure 5 as well as Figure 6 As shown, a three-way valve 10 is fixedly installed in the middle of the mounting plate 8. The left side of the three-way valve 10 is located between the two casting molds 4. The upper and lower ends of the gas storage pipe 701 near the left side are fixedly connected to the gas supply valve 705. When the limit spring 706 is in the initial state, the piston plate 702 is in the leftmost position, and at this time the piston plate 702 is still in the right position of the gas supply valve 705. The upper and lower ends of the three-way valve 10 near the right side are fixedly connected to the gas supply pipe 11, and the other end of the gas supply pipe 11 is fixedly connected to the gas supply valve 705.

[0052] Simultaneously, before the terminal block is fixed, the piston plate 702 moves to the right, creating a negative pressure inside the air storage pipe 701. External air is then drawn into the air storage pipe 701 via the three-way valve 10, air supply pipe 11, and air supply valve 705 for temporary storage. When the die-casting of one side of the terminal block is complete, the terminal block's fixing needs to be loosened and its position adjusted. When the terminal block's fixing is released, the piston plate 702 moves to the left, and the compressed air inside the air storage pipe 701 passes through the air supply valve 705 and air supply pipe 11, and is then discharged through the three-way valve 10, acting on the terminal block surface to complete the self-cleaning process.

[0053] By utilizing the coordinated action of the linkage component 6, the auxiliary locking component 12, the air storage component 7, and the three-way valve 10, the device can temporarily store air when fixing the terminal block, and quickly clean its surface when the terminal block limit is released. The whole process is completed automatically, and the terminal block can be automatically cleaned after one die-casting, reducing surface scratches and improving the overall molding quality.

[0054] Example 3:

[0055] Its basic structure is the same as the above embodiments, except that:

[0056] The extension frame 5 has a hydraulic support column (not shown in the figure) embedded inside, and the upper and lower guide plates 1 are welded to its upper and lower ends to form a triangular load-bearing frame.

[0057] The hydraulic support column is connected to an accumulator, which converts the return kinetic energy into the initial power for the next die casting.

[0058] A linear bearing (not shown in the figure) is added to the surface of guide rod 2, and graphite grease is injected into the bearing;

[0059] The linkage 604 is replaced by a planetary gear set (not shown in the figure) and meshes between the linkage plate 601 and the guide plate 1. The input end of the gear set is connected to a servo motor.

[0060] The three-way valve 10 is replaced with a universal jet ring (not shown in the figure). The ring body is equipped with 12 sets of nano-jet holes, and the axis of the jet holes is staggered at 30°.

[0061] The jet ring is connected to the air storage pipe 701 via a magnetic coupling, enabling 360° rotational jetting.

[0062] The cleaning trigger module includes a pressure sensor and a PLC controller. When the displacement of the support plate 125 is greater than 5mm, the air storage component 7 is activated.

[0063] During the die-casting process, the laser rangefinder monitors the terminal displacement in real time. When the offset is ≥0.1mm, the piezoelectric ceramic fine adjuster drives the support plate 125 to compensate for the displacement.

[0064] Working principle and usage process:

[0065] Before forming the terminal block, the terminal block to be die-cast needs to be pushed between the two die-casting molds 4, and the right end of the mechanical terminal block should be aligned with the auxiliary locking component 12. At the same time, the external hydraulic cylinder should be connected to the linkage component 6 to complete the preparation before die-casting.

[0066] During die casting, the external hydraulic cylinder is activated and the linkage plate 601 is driven to move to the right. When the linkage plate 601 moves to the right, the extension rod 704 can be pulled to move to the right, and the piston plate 702 is moved to the right. At this time, the limit spring 706 can be stretched and the piston rod 703 is moved to the right, thus completing the power transmission.

[0067] When the piston rod 703 moves to the right, the third fixed seat 121 moves to the right and applies a pulling force to the fourth fixed seat 122. At this time, the multiple fourth fixed seats 122 deflect towards the center and apply a force to the guide block 124. At this time, the multiple guide blocks 124 move towards the center of the mounting plate 8 and drive the multiple support plates 125 to move towards the center of the mounting plate 8 until they contact one end of the terminal block. At this time, the terminal block is limited at one end, which helps to complete the subsequent die-casting process.

[0068] When the linkage plate 601 moves to the right, that is, when the device fixes the terminal block, the linkage rod 604 deflects towards the center of the linkage plate 601. At this time, a pushing force is applied to the upper and lower second fixing seats 603, and the upper and lower second fixing seats 603 press on the guide plate 1. The upper and lower guide plates 1 can then move closer to each other under the guidance of the guide rod 2. Conversely, when the terminal block is loosened, the upper and lower guide plates 1 move further apart, automatically completing the opening and closing process of the protection.

[0069] Once the terminals are installed in place, the upper and lower cylinders 3 can be activated to drive the upper and lower die-casting molds 4 closer together, applying pressure to the terminals between them to complete the die-casting process.

[0070] Simultaneously, before the terminal block is fixed, the piston plate 702 moves to the right, creating a negative pressure inside the air storage pipe 701. External air is then drawn into the air storage pipe 701 via the three-way valve 10, air supply pipe 11, and air supply valve 705 for temporary storage. When the die-casting of one side of the terminal block is complete, the terminal block's fixing needs to be loosened and its position adjusted. When the terminal block's fixing is released, the piston plate 702 moves to the left, and the compressed air inside the air storage pipe 701 passes through the air supply valve 705 and air supply pipe 11, and is then discharged through the three-way valve 10, acting on the terminal block surface to complete the self-cleaning process.

[0071] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forming die for a terminal, comprising two symmetrically arranged guide plates (1) arranged one above the other, characterized in that: Two said guide plates (1) between the four corners of the position are movably sleeved with guide rods (2), two said guide plates (1) are displaced up and down relative to the guide rods (2), two said guide plates (1) are symmetrically arranged up and down between the guide rods (2), two said guide plates (1) are fixedly installed with air cylinders (3) at one end relative to each other, the output end of the air cylinder (3) is connected with the casting pressure mold (4), the extension frame (5) is installed at the position close to the right side between the two said guide plates (1), the mounting plate (8) is installed at the position close to the left side of the extension frame (5), the outer side of the mounting plate (8) is axially and equidistantly fixedly installed with extension rails (9), the inside of the extension rail (9) is movably clamped with auxiliary locking assemblies (12), the gas storage assembly (7) is fixedly sleeved with the middle part of the extension frame (5), the left side of the gas storage assembly (7) is connected with the auxiliary locking assembly (12), the right side of the gas storage assembly (7) is installed with linkage assemblies (6), the upper and lower ends of the linkage assembly (6) are connected with one side of the two guide plates (1), the right side of the linkage assembly (6) is connected with the external oil cylinder, The external oil cylinder controls the up and down displacement of the two guide plates (1) through the linkage assembly (6), and acts on the gas storage assembly (7), and through the action of the gas storage assembly (7) on the auxiliary locking assembly (12), the auxiliary locking assembly (12) is deformed to complete the fixing process of the terminal.

2. A forming die for a terminal according to claim 1, wherein: The linkage assembly (6) includes a linkage plate (601), the left side of the linkage plate (601) is connected with the gas storage assembly (7), the right side of the linkage plate (601) is connected with the output end of the external oil cylinder.

3. A forming die for a terminal according to claim 2, wherein: The gas storage assembly (7) includes a gas storage pipe (701), the outer side of the gas storage pipe (701) is fixedly sleeved with the extension frame (5), the inside of the gas storage pipe (701) is movably sleeved with a piston plate (702), the right end of the piston plate (702) is fixedly installed with an extension rod (704), the right end of the extension rod (704) penetrates the right end of the gas storage pipe (701) and is connected with the linkage plate (601).

4. A forming die for a terminal according to claim 3, wherein: The left side of the piston plate (702) is fixedly installed with a piston rod (703), the left side of the piston rod (703) penetrates the left side of the gas storage pipe (701) and is connected with the auxiliary locking assembly (12), the auxiliary locking assembly (12) is axially and equidistantly installed on one side of the piston rod (703), the outer side of the piston rod (703) is movably sleeved with a limiting spring (706), the left and right ends of the limiting spring (706) are connected with one end of the gas storage pipe (701) and one end of the piston plate (702) respectively.

5. A forming die for a terminal according to claim 4, wherein: The auxiliary locking assembly (12) includes a third fixed seat (121), one end of the third fixed seat (121) is connected with the piston rod (703), the end away from the piston rod (703) of the third fixed seat (121) is movably connected with a connecting rod (123) through a pivot, the end away from the third fixed seat (121) of the connecting rod (123) is movably connected with a fourth fixed seat (122) through a pivot.

6. A forming die for a terminal according to claim 5, wherein: The fourth fixed seat (122) is movably connected with the extension guide rail (9) through the guide block (124), the left side of the guide block (124) is fixedly connected with the support plate (125), and the support plate (125) is located on the right side between the two casting molds (4).

7. A forming die for a terminal according to claim 6, wherein: The first fixed seat (602) is movably connected with the linkage rod (604) through a pivot, the end away from the first fixed seat (602) of the linkage rod (604) is movably connected with the second fixed seat (603) through a pivot, and the upper and lower two groups of symmetrical second fixed seats (603) are connected with the upper and lower two guide plates (1) respectively.

8. A forming die for a terminal according to claim 7, wherein: The middle of the mounting plate (8) is fixedly connected with the three-way valve (10), the left side of the three-way valve (10) is located between the two casting molds (4), and the upper and lower ends of the gas storage pipe (701) close to the left side are fixedly connected with the gas inlet valve (705).

9. A forming die for a terminal according to claim 8, wherein: When the limiting spring (706) is in the initial state, the piston plate (702) is located at the leftmost position, and the piston plate (702) is still located on the right side of the gas inlet valve (705), the upper and lower ends of the three-way valve (10) close to the right side are fixedly connected with the gas inlet pipe (11), and the other end of the gas inlet pipe (11) is fixedly connected with the gas inlet valve (705). The fourth fixed seat (122) is movably connected with the extension guide rail (9) through the guide block (124), the left side of the guide block (124) is fixedly connected with the support plate (125), and the support plate (125) is located on the right side between the two casting molds (4).

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