Dual-pressure die pressing clamp and control method thereof

Abstract

The invention belongs to a pressing clamp structure, and provides a double-pressing-die pressing clamp and a control method thereof in order to solve the technical problems that a large amount of physical strength of operators is consumed and safety risks are increased in the using process of existing pressing clamps, and the double-pressing-die pressing clamp comprises a mounting frame, a guiding pressing clamp cover, a steel core pressing die and an aluminum pipe pressing die. The telescopic rotation driving assembly and the first telescopic driving assembly are connected to the mounting frame. The steel core pressing die and the aluminum pipe pressing die are connected side by side and both installed between the output end of the first telescopic driving assembly and the guide pressing clamp cover. A limiting groove is formed in the mounting frame, and a limiting boss matched with the limiting groove is arranged on the side wall of the guide pressing clamp cover. And the guide pressing clamp cover is mounted at the output end of the telescopic rotation driving assembly and used for driving the guide pressing clamp cover to rotate and ascend and descend through the telescopic rotation driving assembly, so that the limiting boss is located in the limiting groove within a part of angle range in the rotating process of the guide pressing clamp cover, and the limiting boss and the limiting groove are staggered within the remaining angle range.

Description

Technical Field

[0001] The present application relates to a pressing clamp structure, and more particularly to a double-pressing mold pressing clamp and a control method thereof. Background Art

[0002] During the construction of transmission line stringing, the length of a single reel of conductor is usually 2~3km. However, the actual length of the transmission line is often much longer than this value, which may reach tens to thousands of kilometers. In order to meet the needs of actual transmission lines, power grid construction personnel must connect the conductors of multiple reels into one conductor through crimping technology. Therefore, the quality of the conductor crimping will directly affect the safe and stable operation of the power grid.

[0003] The wire crimping process usually includes wire cutting, wire stripping, pipe threading, steel anchor crimping, brushing electrical grease, casing and aluminum tube crimping, etc. Among them, the corresponding type of crimping die needs to be replaced during steel anchor crimping and aluminum tube crimping operations, and the parameters of the crimping machine need to be adjusted under the condition of 1000~3000kN jaw handling. However, the weight of the crimping pliers is generally 100~200kg, which will consume a lot of physical strength of the operators. If the crimping pliers cover is not fully installed in place, it will increase the safety risks during the construction process. Especially for tension clamp crimping, it is a high-altitude operation with higher risks. Summary of the invention

[0004] In order to solve the technical problem that the use of current pressing pliers consumes a lot of workers' physical strength and increases safety risks, the present application provides a double-pressing die pressing pliers and a control method thereof.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions: In a first aspect, the present application provides a double-die pressing pliers, comprising a mounting frame, a guide pressing pliers cover, a steel core pressing die and an aluminum tube pressing die, and a telescopic rotary drive assembly and a first telescopic drive assembly connected to the mounting frame; The steel core die and the aluminum tube die are connected side by side and are both installed between the output end of the first telescopic drive assembly and the guide clamp cover; The mounting frame is provided with a limiting groove, and the side wall of the guide pressure clamp cover is provided with a limiting boss matched with the limiting groove, which is used to limit the lifting and lowering of the guide pressure clamp cover; The guide pressure clamp cover is installed on the output end of the telescopic rotation drive assembly, and is used to drive the guide pressure clamp cover to rotate and lift through the telescopic rotation drive assembly, so that during the rotation of the guide pressure clamp cover, the limit boss is located in the limit groove within a partial angle range, and the limit boss and the limit groove are staggered within the remaining angle range; the telescopic rotation drive assembly and the first telescopic drive assembly are coaxially arranged in the telescopic direction.

[0006] Further, the telescopic rotation drive assembly includes a second telescopic drive assembly, a fixed connecting arm and a connecting member; One end of the fixed connecting arm is connected to the output end of the second telescopic driving assembly, and the other end is provided with a protrusion; The connecting piece is provided with a spiral groove, the protrusion is located in the spiral groove, and the connecting piece is installed on the guide pressure clamp cover.

[0007] Furthermore, a mounting groove is provided on the upper portion of the mounting frame; The limiting groove is located on the inner wall of the installation groove, and the steel core pressing die and the aluminum tube pressing die are both located in the installation groove.

[0008] Furthermore, the outer walls of the steel core die and the aluminum tube die are in contact with and slidingly matched with the inner wall of the installation groove.

[0009] Furthermore, the limiting boss is a boss arranged opposite to the guide clamp cover.

[0010] Furthermore, the steel core die and the aluminum tube die are connected in a dovetail groove form.

[0011] Furthermore, the second telescopic driving assembly is an electric push rod.

[0012] Furthermore, the first telescopic drive assembly is a piston drive assembly.

[0013] Further, the first telescopic drive assembly includes a clamp cylinder and a piston installed at an output end of the clamp cylinder; The pressure clamp cylinder is located in the lower part of the mounting frame.

[0014] In a second aspect, the present application proposes a control method for the above-mentioned double-pressing die pressing pliers, comprising: The telescopic rotation drive assembly drives the guide pressure clamp cover to rotate, so that the limiting boss escapes from the limiting groove, and continues to drive the guide pressure clamp cover to rise to a preset position, and cooperates with the first telescopic drive assembly to open the steel core die and the aluminum tube die; Place the crimping tube into the steel core die and the aluminum tube die respectively; The telescopic rotating drive assembly drives the guide pressing clamp cover to descend, and cooperates with the first telescopic driving assembly to put the steel core pressing die and the aluminum tube pressing die into a pressing state; The telescopic rotation driving assembly drives the guide pressure clamp cover to rotate in the opposite direction, so that the limiting boss is located in the limiting groove.

[0015] Compared with the prior art, this application has the following beneficial effects: The present application proposes a double-die pressing pliers, which can realize synchronous crimping of the steel core and the aluminum mold by staggering the steel core die and the aluminum tube die, thus avoiding the tedious operation of replacing the die during the construction process. At the same time, compared with the traditional pressing pliers, the design of the double die can increase the projected cross-section of the output end of the first telescopic drive assembly, thereby reducing the power requirement of the first telescopic drive assembly and improving the economy of the use of the power source. The present application also designs a guide pressing pliers cover, and the telescopic rotation drive assembly can drive the guide pressing pliers cover to rotate and lift, so that the limiting boss is located in the limiting groove within a partial angle range during the rotation of the guide pressing pliers cover, and the limiting boss is staggered with the limiting groove within the remaining angle range, so that the guide pressing pliers cover has the functions of automatic opening, closing and self-locking, thereby increasing the safety during the construction process. Therefore, the double-die pressing pliers proposed in the present application have excellent economic benefits and promotion value.

[0016] The present application also proposes a control method for the above-mentioned double-pressure molding pliers, which has all the advantages of the above-mentioned double-pressure molding pliers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of an embodiment of a double-molding press pliers of the present application (the guide press pliers cover is in a locked state); Figure 2 A schematic diagram of the guide clamp cover being in an unlocked state; Figure 3 This is a schematic diagram of the state after the guide clamp cover is raised; Figure 4 This is a schematic diagram of the connection between the steel core die and the aluminum tube die through a dovetail groove.

[0019] Among them: 1-mounting frame, 2-guide clamp cover, 3-steel core die, 4-aluminum tube die, 5-first telescopic drive assembly, 6-limiting boss, 7-second telescopic drive assembly, 8-fixed connecting arm, 9-connecting piece, 10-spiral groove, 11-piston. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In the construction of transmission line wiring, the length of a single reel of wire is generally limited to 2~3km. However, the actual demand for transmission lines often exceeds this length and may extend to tens or even thousands of kilometers. In order to meet the needs of long-distance power transmission, power grid construction personnel need to use crimping technology to connect the wires of multiple reels into a continuous wire. The quality of wire crimping is crucial to the safe and stable operation of the power grid. It is necessary to ensure that the wire connection is tight and firm enough to withstand the test of various harsh natural conditions such as strong winds, heavy rains, and lightning.

[0027] In actual applications, the wire crimping process includes several key steps, such as wire cutting, wire stripping, tube threading, steel anchor crimping, brushing electrical grease, casing and aluminum tube crimping, etc. Among them, steel anchor crimping and aluminum tube crimping are particularly important links, requiring construction personnel to replace the crimping die according to the specific model, and accurately adjust the pressure, speed and position of the crimping machine under the condition of a jaw force of 1000kN~3000kN to ensure that the crimping is completed die by die.

[0028] In addition, the crimping of tension wire clamps usually needs to be done at high altitudes, which undoubtedly increases the danger of the operation. In addition, the weight of the crimping clamp itself can reach 100kg~200kg, making this operation extremely physically demanding for construction workers. In addition, if the crimping clamp cover is not fully installed in place, it will further increase the safety risks during the construction process, which may cause serious consequences such as loosening, falling off or breaking of the wires, which will in turn pose a threat to the stable operation of the power grid. Therefore, in the construction of wire crimping, it is necessary to strictly abide by the operating procedures to ensure that every step meets the quality standards to ensure the safe and reliable operation of the power grid.

[0029] Relevant research in the prior art includes a utility model patent with publication number CN220570026U which proposes a hydraulic crimping machine for electric power engineering, including a base and an electric hydraulic cylinder, one side of the electric hydraulic cylinder is provided with a liquid inlet joint, the output end of the top of the cylinder is fixedly provided with a die base, the top of the die base is rotatably provided with a lower die, an upper die is provided above the lower die, and the top of the lower die is provided with a limit adjustment component for limiting and adjusting the power cable, and a limit adjustment component for the power cable is provided. The rotation of the bidirectional screw in the limit adjustment component can drive the limit seats on both sides of the lower die to move toward or oppositely, thereby adjusting the size of the lower die limit according to the size of different wires, avoiding re-mold replacement, facilitating quick connection, and improving construction efficiency. The hydraulic crimping machine for electric power engineering avoids the need to change molds during crimping construction through a limit device. However, the circular cross-section of the steel pipe / aluminum pipe is pressed into a regular hexagonal cross-section during the wire crimping construction. If the original single-die crimping of the device is used, the angle needs to be manually adjusted for three crimpings. Overall, it does not reduce the labor intensity of construction and increases the uncertainty factors in the crimping process. Therefore, it is not practical enough and has poor operability.

[0030] The existing wire crimping pliers designs at home and abroad mainly adopt the single crimping die form with the central thrust of the oil cylinder. In addition, in the automatic crimping technology, conventional crimping pliers need a more complex mechanical structure to realize automatic die change. However, increasing the weight and complexity of the equipment will also bring potential failure points. The construction environment of power transmission and transformation is complex and harsh. In the equipment design, we should avoid the stacking of mechanisms like building blocks. We should do "subtraction" based on a full understanding of the process characteristics and solve the core problems with a minimalist mechanical language.

[0031] Based on the above situation, the present application proposes a dual-pressure molding pliers and a control method thereof, and the present application is described in detail below in conjunction with embodiments and drawings.

[0032] As an embodiment of a double-die pressing pliers of the present application, it can include a mounting frame, a guide pressing pliers cover, a steel core pressing die and an aluminum tube pressing die, as well as a telescopic rotating drive assembly and a first telescopic drive assembly connected to the mounting frame.

[0033] The steel core die and the aluminum tube die are connected side by side and are both installed between the output end of the first telescopic drive assembly and the guide clamp cover. A limit slot is provided on the mounting frame, and a limit boss matched with the limit slot is provided on the side wall of the guide clamp cover to limit the lifting and lowering of the guide clamp cover; the guide clamp cover is installed on the output end of the telescopic rotation drive assembly, and is used to drive the guide clamp cover to rotate and lift through the telescopic rotation drive assembly, so that the limit boss is located in the limit slot within a partial angle range during the rotation of the guide clamp cover, and the limit boss is staggered with the limit slot within the remaining partial angle range; the telescopic rotation drive assembly and the first telescopic drive assembly are coaxially arranged in the telescopic direction.

[0034] The mounting frame is the basic structure of the entire double-die pressing pliers, providing a stable support platform for installing and fixing other components. In practical applications, the mounting frame can be made of high-strength and high-rigidity materials, such as cast iron, cast steel or aluminum alloy, to ensure that the pressing pliers can withstand greater pressure and torque during operation. Precise mounting holes and positioning surfaces can also be designed on the mounting frame to facilitate accurate installation and debugging of other components. In addition, a limit groove can be provided on the mounting frame to cooperate with the limit boss on the guide pressing pliers cover to limit the lifting and lowering range of the guide pressing pliers cover and ensure the accuracy and stability of the pressing pliers action. The guide pressing pliers cover directly participates in the lifting and rotating actions of the die, which can not only limit the lifting and lowering range of the guide pressing pliers cover, but also play a positioning role. The guide pressing pliers cover can realize the compound movement of rotation and lifting through the drive of the telescopic rotation drive assembly, thereby meeting the pressing pliers requirements under different working conditions, and realizing locking after pressing, thereby improving safety. The steel core die and the aluminum tube die are connected side by side between the output end of the first telescopic drive assembly and the guide pressing pliers cover. Among them, the steel core die is mainly used to press the steel core, while the aluminum tube die is used to press the aluminum tube. The design of the two takes into account different pressing requirements and material properties to ensure the quality and efficiency of the pressed products. At the same time, two dies are set to reduce the replacement of parts during the construction process and improve construction efficiency. The telescopic rotary drive assembly can output two forms of motion, rotation and telescopic, which can be achieved through specific driving parts or through the cooperation of structural parts. In practical applications, the telescopic rotary drive assembly can achieve precise stopping and positioning of the guide clamp cover at a specified angle and position through precise control algorithms and sensor feedback. Its telescopic direction is coaxially set with the telescopic direction of the first telescopic drive assembly, ensuring the coordination and consistency of the clamp action. The first telescopic drive assembly is mainly used to drive the lifting and lowering movement of the steel core die and the aluminum tube die. In practical applications, it can be composed of driving elements such as hydraulic cylinders, cylinders or electric push rods, and can output stable thrust or tension according to the control signal. The output end of the first telescopic drive assembly is connected to the steel core die and the aluminum tube die. By controlling its telescopic amount, the die can be precisely controlled to meet the requirements of different pressing processes.

[0035] The double-pressure die-casting pliers of the present application are suitable for high-altitude manual crimping operations, which improves the safety of the crimping process and solves the technical difficulties in the development of automatic crimping technology.

[0036] like Figure 1 FIG. 1 is a schematic diagram of an embodiment of a double-die pressing pliers of the present application, wherein the guide pressing pliers cover 2 is in a locked state. The double-die pressing pliers may include a mounting frame 1, a guide pressing pliers cover 2, a steel core pressing die 3 and an aluminum tube pressing die 4, and a telescopic rotation driving assembly and a first telescopic driving assembly 5 connected to the mounting frame 1.

[0037] The telescopic rotation drive assembly includes a second telescopic drive assembly 7, a fixed connecting arm 8 and a connecting piece 9. One end of the fixed connecting arm 8 is connected to the output end of the second telescopic drive assembly 7, and the other end is provided with a protrusion. A spiral groove 10 is provided on the connecting piece 9, and the protrusion is located in the spiral groove 10. The connecting piece 9 is installed on the guide clamp cover 2. The second telescopic drive assembly 7 is the power source of the telescopic rotation drive assembly, which is responsible for providing power for linear reciprocating motion. The second telescopic drive assembly 7 can be a hydraulic cylinder, a cylinder, an electric push rod or any other driving device that can generate linear displacement. The second telescopic drive assembly 7 can push or pull the fixed connecting arm 8 to perform linear motion, and this linear motion is the basis for subsequent rotation. The fixed connecting arm 8 is an important component connecting the second telescopic drive assembly 7 and the connecting member 9, and plays the role of transmitting power and converting the form of motion. One end of the fixed connecting arm 8 is connected to the output end of the second telescopic drive assembly 7. When the second telescopic drive assembly 7 is working, the fixed connecting arm 8 will perform linear motion accordingly. The other end of the fixed connecting arm 8 is designed with a protrusion, which will cooperate with the spiral groove 10 on the connecting member 9 to realize the transmission of rotational motion. A spiral groove 10 is provided on the connecting member 9, and this spiral groove 10 cooperates with the protrusion on the fixed connecting arm 8. When the fixed connecting arm 8 performs linear motion, the protrusion will slide in the spiral groove 10. Due to the special shape of the spiral groove 10, this sliding will be converted into the rotational motion of the connecting member 9. The connecting member 9 is usually installed on the guide clamp cover 2. Therefore, when the connecting member 9 rotates, it will drive the guide clamp cover 2 to rotate together. The limiting boss 6 is a boss arranged relatively in the circumferential direction of the guide clamp cover 2. The guide clamp cover 2 is rotated 90°, which can put the guide clamp cover 2 in a locked state or an unlocked state. Figure 1 As shown, it is a schematic diagram of the guide clamp cover 2 in a locked state. Figure 2 As shown in FIG. 1 , it is a schematic diagram showing that the guide clamp cover 2 is in an unlocked state. Figure 3 The figure shows a schematic diagram of the state after the guide clamp cover 2 is lifted. The first telescopic drive assembly 5 may include a clamp cylinder and a piston 11 installed at the output end of the clamp cylinder. The clamp cylinder is located in the lower part of the mounting frame 1. When the external hydraulic pump injects high-pressure oil into the clamp cylinder, the oil will push the piston 11 to move to the other end of the cylinder. Since the piston 11 is connected to the steel core die 3 and the aluminum tube die 4, the movement of the piston 11 will drive the die to move up and down. By controlling the output pressure and flow of the hydraulic pump, the movement speed and displacement of the piston 11 can be accurately controlled, thereby achieving accurate control of the die lifting.

[0038] An installation groove is opened on the upper part of the installation frame 1, and the limit groove is located on the inner wall of the installation groove. The steel core die 3 and the aluminum tube die 4 are both located in the installation groove. The outer walls of the steel core die 3 and the aluminum tube die 4 are in contact with the inner wall of the installation groove and slide together. When the steel core die 3 and the aluminum tube die 4 open and close, the installation groove can limit their movement trajectory.

[0039] like Figure 4 As shown, it is a schematic diagram of the steel core die 3 and the aluminum tube die 4 being connected in the form of a dovetail groove. In order to ensure the connection stability between the steel core die 3 and the aluminum tube die 4, the steel core die 3 and the aluminum tube die 4 are connected in the form of a dovetail groove. The dovetail groove connection is to cut several dovetail shapes on one object, and then cut corresponding grooves on another object, so that the two objects can be embedded and locked with each other. This connection method is very tight and can maintain the stability of the connection.

[0040] The overall working principle of the above-mentioned double-die pressing pliers is as follows: the steel core pressing die 3 and the aluminum tube pressing die 4 are combined into a set of pressing dies through a dovetail groove, and are respectively assembled between the guide pressing pliers cover 2 and the piston 11. The piston 11 is driven up and down by hydraulic pressure to drive the steel core pressing die 3 and the aluminum tube pressing die 4 to perform opening and closing actions, and the crimping tubes are respectively offset and placed into the steel core pressing die 3 and the aluminum tube pressing die 4 to realize steel core crimping and aluminum tube crimping respectively.

[0041] Among them, the opening and closing and self-locking of the steel core die 3 and the aluminum tube die 4 are realized, and the main process is: when opening the cover, the second telescopic drive assembly 7 extends outward to drive the fixed connecting arm 8 to rise, and then drives the guide clamp cover 2 to produce a 90° spin movement, unlocking the guide clamp cover 2 and the clamp cylinder body, and the second telescopic drive assembly 7 continues to extend outward to make the guide clamp cover 2 open the cover. When closing the cover, the second telescopic drive assembly 7 retracts and drives the fixed connecting arm 8 to descend, so that the guide clamp cover 2 descends, and the second telescopic drive assembly 7 continues to retract and drives the guide clamp cover 2 to produce a reverse spin of 90°, thereby locking the guide clamp cover 2 and the clamp cylinder body.

[0042] It should be noted that the pressure clamp cylinder body and the mounting frame 1 can be designed as an integrated unit, that is, the pressure clamp cylinder body serves as the mounting frame 1 .

[0043] The present application innovatively adopts a single-cylinder double-die pressure clamp structure, that is, the steel core pressure mold 3 and the aluminum tube pressure mold 4 are combined into one body by splicing and placed in the piston cylinder 11, and the pressure molds can be closed by eccentric force. At the same time, an automatic cover opening structure is configured. When extended upward, the fixed connecting arm 8 will rotate 90° with the guide pressure clamp cover 2, and will maintain a relatively stable posture under the self-weight of the guide pressure clamp cover 2, and then the second telescopic drive assembly 7 will continue to extend to disengage the guide pressure clamp cover 2. Similarly, the contraction of the second telescopic drive assembly 7 can make the guide pressure clamp cover 2 fall back and spin lock.

[0044] At present, single-die crimping pliers are often used in crimping operations. In the wire crimping construction operation, each crimping tube construction operation needs to replace the steel die and the aluminum die to crimp the steel core and aluminum wire of the wire respectively. Especially for the crimping of high-altitude tension wire clamps, the construction environment is dangerous, the replacement of the die is inconvenient, and the wire crimping jaw output is generally 1000kN~3000kN, and there is a safety risk that the die buckle is not installed in place. However, the present application realizes the crimping of the steel core die 3 and the aluminum tube die 4 by using staggered use, avoiding the trouble of die replacement during construction. At the same time, compared with traditional crimping pliers, the double die design increases the projected cross-section of the piston 11 cylinder, reducing the 94MPa hydraulic system of the traditional crimping pliers with a jaw output of 1000kN to 70MPa, improving the economy of the power source.

[0045] Based on the above double-pressing die pressing pliers, the present application also proposes a control method for the double-pressing die pressing pliers, including: (1) The telescopic rotation drive assembly drives the guide pressure clamp cover 2 to rotate, so that the limiting boss 6 escapes from the limiting groove, and continues to drive the guide pressure clamp cover 2 to rise to a preset position, and cooperates with the first telescopic drive assembly 5 to open the steel core die 3 and the aluminum tube die 4; (2) Place the crimping tubes into the steel core die 3 and the aluminum tube die 4 respectively; (3) The telescopic rotating drive assembly drives the guide pressing clamp cover 2 to descend, and cooperates with the first telescopic driving assembly 5 to put the steel core pressing die 3 and the aluminum tube pressing die 4 into a pressing state; (4) The telescopic rotation drive assembly drives the guide clamp cover 2 to rotate in the opposite direction, so that the limiting boss 6 is located in the limiting groove.

[0046] Correspondingly, other embodiments of the double-pressure molding pliers mentioned above may be used, which will not be described in detail here.

[0047] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A double-pressure die-casting pliers, characterized in that: It comprises a mounting frame (1), a guide clamp cover (2), a steel core die (3) and an aluminum tube die (4), as well as a telescopic rotation drive assembly and a first telescopic drive assembly (5) connected to the mounting frame (1); The steel core die (3) and the aluminum tube die (4) are connected side by side and are both installed between the output end of the first telescopic drive assembly (5) and the guide clamp cover (2); The mounting frame (1) is provided with a limiting groove, and the side wall of the guide pressure clamp cover (2) is provided with a limiting boss (6) matched with the limiting groove, and used for limiting the lifting and lowering of the guide pressure clamp cover (2); The guide pressure clamp cover (2) is mounted on the output end of the telescopic rotation drive assembly and is used to drive the guide pressure clamp cover (2) to rotate and rise and fall through the telescopic rotation drive assembly, so that during the rotation of the guide pressure clamp cover (2), the limiting boss (6) is located in the limiting groove within a partial angle range, and the limiting boss (6) is staggered from the limiting groove within the remaining partial angle range; the telescopic rotation drive assembly and the first telescopic drive assembly (5) are coaxially arranged in the telescopic direction.

2. The double-pressure die pressing pliers according to claim 1, characterized in that: The telescopic rotation drive assembly comprises a second telescopic drive assembly (7), a fixed connecting arm (8) and a connecting piece (9); One end of the fixed connecting arm (8) is connected to the output end of the second telescopic driving assembly (7), and the other end is provided with a protrusion; The connecting piece (9) is provided with a spiral groove (10), the protrusion is located in the spiral groove (10), and the connecting piece (9) is mounted on the guide pressure clamp cover (2).

3. The double-pressure die pressing pliers according to claim 1, characterized in that: The upper part of the mounting frame (1) is provided with a mounting groove; The limiting groove is located on the inner wall of the installation groove, and the steel core pressing die (3) and the aluminum tube pressing die (4) are both located in the installation groove.

4. The double-pressure die pressing pliers according to claim 3, characterized in that: The outer walls of the steel core die (3) and the aluminum tube die (4) are in contact with the inner wall of the installation groove and are slidably matched.

5. The double-pressure die pressing pliers according to claim 4, characterized in that: The limiting boss (6) is a boss arranged opposite to the guide pressure clamp cover (2).

6. The double-pressure die pressing pliers according to claim 1, characterized in that: The steel core die (3) and the aluminum tube die (4) are connected in a dovetail groove form.

7. The double-pressure die pressing pliers according to claim 1, characterized in that: The second telescopic driving component (7) is an electric push rod.

8. The double-pressure die pressing pliers according to claim 1, characterized in that: The first telescopic drive assembly (5) is a piston (11) drive assembly.

9. The double-pressure die pressing pliers according to claim 1, characterized in that: The first telescopic drive assembly (5) comprises a clamp cylinder and a piston (11) mounted at the output end of the clamp cylinder; The pressure clamp cylinder is located in the lower part of the mounting frame (1).

10. A control method for the double-pressure die pressing pliers according to any one of claims 1 to 9, characterized in that: include: The telescopic rotation driving assembly drives the guide pressure clamp cover (2) to rotate, so that the limiting boss (6) escapes from the limiting groove, and continues to drive the guide pressure clamp cover (2) to rise to a preset position, and cooperates with the first telescopic driving assembly (5) to put the steel core pressing die (3) and the aluminum tube pressing die (4) in an open state; The compression tube is placed in a staggered manner into the steel core compression mold (3) and the aluminum tube compression mold (4) respectively; The telescopic rotating drive assembly drives the guide pressure clamp cover (2) to descend, and cooperates with the first telescopic drive assembly (5) to put the steel core pressure die (3) and the aluminum tube pressure die (4) into a pressed state; The telescopic rotation driving assembly drives the guide clamp cover (2) to rotate in the opposite direction, so that the limiting boss (6) is located in the limiting groove.

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