Composite material and metal extrusion connection forming device and forming method

Abstract

The invention discloses a composite material and metal extrusion connection forming device and method.The composite material and metal extrusion connection forming device comprises a supporting assembly, an extrusion die arranged on one side of the supporting assembly and a support assembly arranged on the other side of the supporting assembly; a transition interval for the composite material and the metal to-be-pressed piece to be pulled to move is arranged between the extrusion die and the supporting assembly; and under the traction of an external actuator, the composite material and the metal to-be-pressed piece penetrate through the through hole in the transition section, so that the composite material and the metal to-be-pressed piece are continuously and uniformly extruded and formed. According to the invention, the support expansion mechanism is utilized to adjust the size of the transition interval for the traction movement of the composite material and the metal to-be-pressed part, so that the to-be-pressed parts with different lengths are met, the to-be-pressed parts have enough traction allowance, and the longitudinal continuous extrusion of the composite material and the long metal connecting part is met through the cooperation of the extrusion die and the traction transition interval; and the forming quality and the production efficiency are improved.

Description

Technical Field

[0001] The invention relates to a composite material and metal extrusion connection molding device and a molding method, belonging to the technical field of composite material connection. Background Art

[0002] Fiber reinforced composite materials have significant advantages such as high specific strength, large specific modulus, good designability, and corrosion resistance. They are a new type of structural material in civil engineering and have broad application prospects in bridge engineering, large-span space structures, national defense engineering, marine engineering and other fields. However, fiber reinforced composite materials cannot be welded in a similar way to metals, and their connection problems have become a bottleneck problem that restricts their application and promotion. At present, the commonly used connection technologies for fiber reinforced composite materials mainly include bolt connection, riveting, adhesive connection, and mixed connection of adhesive and screw. However, practice has shown that the existing bolt connection and riveting have problems such as large cross-sectional weakening rate, low connection efficiency, and insufficient ductility. The adhesive connection has the disadvantages of large strength dispersion, low peel strength, poor reliability, easy aging, and non-removable.

[0003] Existing high-load-bearing composite material connection methods include extrusion-type connections such as preload tooth connection and prestressed spline connection. These connections are all radially extruded by a tube shrinking machine to cause plastic deformation of the metal parts and generate high prestress at the bonding interface, so as to achieve a firm bond and efficient force transmission between the metal parts and the composite parts, and achieve ductile bearing of the joint through interface regulation. However, in the process of radially extruding the composite material connection parts to be extruded by traditional extrusion equipment such as a tube shrinking machine, the composite material connection cannot further achieve a higher bearing capacity because the prestress that the tube shrinking machine can provide is limited; in addition, the extrusion amount and plastic deformation of the metal parts cannot be accurately controlled, and it is impossible to ensure that the preset extrusion amount and interface prestress are achieved. Moreover, the extrusion deformation and interface prestress are uneven along the longitudinal direction, making the mechanical properties of the composite material connection relatively discrete; at the same time, the extrusion length is limited by the annular circular block mold of the tube shrinking machine, and can only be extruded in sections horizontally. When the metal parts are long, they cannot be extruded continuously, and the production efficiency is low. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a composite material and metal extrusion connection molding device and molding method to meet the longitudinal continuous extrusion and precise control of the extrusion amount of long metal parts, improve the molding quality and production efficiency, and solve the problems that the current tube shrinking machine can only extrude in sections horizontally when extruding long metal parts, the extrusion deformation is difficult to accurately control, and the interface pre-stress is uneven along the longitudinal direction.

[0005] In order to achieve the above purpose / solve the above technical problems, the present invention is implemented by adopting the following technical solutions: In one aspect, the present invention provides a composite material and metal extrusion connection molding device, comprising a support assembly, an extrusion die disposed on one side of the support assembly, and a bracket assembly disposed on the other side of the support assembly; A transition zone is provided between the extrusion die and the support assembly for the composite material and the metal piece to be pressed to be pulled and moved; The support assembly includes a support expansion mechanism, which is used to adjust the distance between the extrusion die and the support assembly along the pulling movement direction of the composite material and the metal piece to be pressed, so as to change the size of the transition interval; The extrusion die is provided with a through hole for extruding the composite material and the metal part to be pressed, and a traction piece is also provided on one side of the extrusion die, and the traction piece is used to connect the composite material, the metal part to be pressed and the external actuator; under the traction of the external actuator, the composite material and the metal part to be pressed pass through the through hole in the transition zone, so that the composite material and the metal part to be pressed are continuously and evenly extruded.

[0006] Optionally, the support assembly further comprises a mold stop plate provided on one side of the support expansion mechanism for connecting to the extrusion mold and an end positioning plate provided on the other side of the support expansion mechanism for connecting to the bracket assembly; A transition zone is formed between the mold limiting plate and the end positioning plate.

[0007] Optionally, the support expansion mechanism includes a plurality of telescopic guide rods and a plurality of locking members corresponding to the telescopic guide rods for fixing the mold limit plate and the end positioning plate to the telescopic guide rods; by changing the length of the telescopic guide rods, the size of the transition zone between the mold limit plate and the end positioning plate is changed.

[0008] Optionally, the telescopic guide rod comprises a first rod body and a second rod body, the first rod body is threadedly connected to the second rod body, and the length of the telescopic guide rod is changed by screwing the two rod bodies; The mold limiting plate and the end positioning plate are both provided with a plurality of positioning holes matching the first rod body and the second rod body; A threaded area is provided at one end of the first rod body and the second rod body away from each other, and the locking piece is a positioning nut. The positioning holes on the mold limiting plate and the end positioning plate are respectively passed through the first rod body and the second rod body, and the mold limiting plate and the end positioning plate are respectively fixed to the two ends of the telescopic guide rod through the positioning nuts.

[0009] Optionally, the mold limiting plate is further provided with a double-layer stepped through-hole groove, one end of the through-hole groove is adapted to the traction member, and the other end is adapted to the extrusion mold.

[0010] Optionally, the extrusion die comprises two or more halves of a die body, and the two or more halves of the die body are assembled in a through hole groove to form a through hole in the middle.

[0011] Optionally, the support assembly includes a connected intermediate connecting member and a support; The end positioning plate is provided with a connecting hole matching the middle connecting piece.

[0012] Optionally, a transition threaded rod is provided at one end of the intermediate connecting piece, and an ear plate assembly is provided at the other end; The ear plate groups are fixedly connected to the support, and the ear plate groups are connected via pins; The connecting hole is threadably connected to the transition threaded rod.

[0013] Optionally, the composite material and metal parts to be pressed include a composite material part and preformed metal parts pre-extruded at both ends of the composite material part; The end surface of the preformed metal part is provided with a threaded hole; The traction member comprises a body and a threaded rod matching the threaded hole on the end face of the preformed metal member; The traction member is threadedly connected to the preformed metal member; The main body is provided with a mounting hole connected to the external actuator.

[0014] Another aspect of the present invention provides a composite material and metal extrusion connection molding method, the method is based on the composite material and metal extrusion connection molding device, the method comprises: Combining a preformed metal part prepared in advance by machining with a composite material part to form a composite material and metal part to be pressed; Determine the size of the transition zone according to the size of the composite material and the metal part to be pressed, and adjust the length of each telescopic guide rod based on the determined transition zone size; Assembling the extrusion die and the bracket assembly to the support assembly; Placing the composite material and the metal piece to be pressed in the transition zone, aligning the end faces of the composite material and the metal piece to be pressed with the through hole, and then connecting the composite material and the metal piece to be pressed with the traction piece by screwing; If the composite material, the metal pressed part and the traction part are already placed horizontally, connect the traction part to the external actuator; The external actuator is started, and the composite material and the metal piece to be pressed pass through the through hole under the traction of the traction member, completing the pre-extrusion connection and forming of the composite material and the metal piece to be pressed at one end; The composite material and the metal piece to be pressed are removed, and the other ends of the composite material and the metal piece to be pressed are pre-extruded and connected to form the composite material and the metal piece to be pressed according to the above steps.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention utilizes a support expansion mechanism to adjust the size of the transition zone for the composite material and the metal workpiece to be pressed to be pulled and moved, so as to meet the needs of workpieces to be pressed of different lengths, so that the workpiece to be pressed has sufficient pulling margin. Through the cooperation of the extrusion die and the pulling transition zone, the long metal parts can be continuously extruded longitudinally through the through holes, thereby improving the molding quality and production efficiency, and solving the problems that the current tube shrinking machine can only extrude long metal parts in sections transversely, the extrusion deformation is difficult to accurately control, and the interface pre-stress stress is uneven along the longitudinal direction.

[0016] 2. The present invention utilizes a splicing form in which two or more pieces of the mold body are spliced ​​together in a through hole groove to form a through hole in the middle, thereby realizing the replacement of extrusion molds with different through hole sizes, so that the extrusion mold can meet the working conditions of different preset extrusion amounts, thereby improving applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a composite material and metal extrusion connection molding device provided by an embodiment of the present invention; Figure 2 It is an exploded view of a composite material and metal extrusion connection molding device provided by an embodiment of the present invention; Figure 3 It is a schematic diagram of a supporting component in a composite material and metal extrusion connection molding device provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of a supporting and expanding mechanism in a composite material and metal extrusion connection molding device provided by an embodiment of the present invention; Figure 5 It is a schematic diagram of an extrusion die in a composite material and metal extrusion connection molding device provided by an embodiment of the present invention; Figure 6 It is a schematic diagram of a mold limiting plate in a composite material and metal extrusion connection molding device provided by an embodiment of the present invention; Figure 7 It is a schematic diagram of an end positioning plate in a composite material and metal extrusion connection molding device provided by an embodiment of the present invention; Figure 8 It is a schematic diagram of an intermediate connecting piece in a composite material and metal extrusion connection forming device provided by an embodiment of the present invention; Fig. 9 is a schematic diagram of assembling a composite material and a metal part to be pressed in an embodiment of the present invention; Fig.10 The present invention is a schematic diagram of a composite material and metal extrusion connection molding method according to an embodiment of the present invention.

[0018] In the figure: 1. support component; 2. extrusion die; 201. through hole; 202. die body; 3. bracket component; 301. intermediate connector; 3011. transition threaded rod; 3012. ear plate group; 302. support; 401. support expansion mechanism; 4011. first rod body; 4012. second rod body; 4013. locking member; 402. die limit plate; 403. end positioning plate; 404. transition interval; 5. positioning hole; 6. traction member; 601. body; 602. threaded rod; 7. through hole groove; 8. first fixing hole; 9. second fixing hole; 10. fastener; 11. connection hole; 12. mounting hole; 13. pin; 14. composite material and metal parts to be pressed; 1401. composite material part; 1402. preformed metal part; 15. external actuator. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Example

[0022] like Figure 1 , Figure 2 and Figure 3As shown, a composite material and metal extrusion connection molding device includes a support assembly 1, an extrusion die 2 and a bracket assembly 3; the support assembly 1 includes a support expansion mechanism 401, a die limit plate 402 provided on one side of the support expansion mechanism 401 for connecting the extrusion die 2, and an end positioning plate 403 provided on the other side of the support expansion mechanism 401 for connecting the bracket assembly 3; a transition zone 404 for the composite material and the metal to be pressed to be pulled and moved is formed between the die limit plate 402 and the end positioning plate 403, and the support expansion mechanism 401 is used to adjust the distance between the extrusion die 2 and the support assembly 1 along the pulling and moving direction of the composite material and the metal to be pressed The piece is changed, and the size of the transition zone 404 is specifically: The support expansion mechanism 401 includes a plurality of telescopic guide rods and a plurality of locking members 4013 corresponding to the telescopic guide rods and used to fix the mold limit plate 402 and the end positioning plate 403 to the telescopic guide rods. In this embodiment, the number of the telescopic guide rods is four, and the number of the locking members 4013 is eight; like Figure 3 and Figure 4 As shown, the telescopic guide rod includes a first rod body 4011 and a second rod body 4012, the first rod body 4011 is threadedly connected to the second rod body 4012, and the length of the telescopic guide rod is changed by screwing the two rod bodies, thereby changing the size of the transition zone 404 between the mold limit plate 402 and the end positioning plate 403; like Figure 2 and Figure 6 As shown, the mold limiting plate 402 and the end positioning plate 403 are each provided with four positioning holes 5 matching the first rod body 4011 and the second rod body 4012, and the ends of the first rod body 4011 and the second rod body 4012 that are away from each other are processed with threaded areas; the locking member 4013 is a positioning nut, and the positioning holes 5 on the mold limiting plate 402 and the end positioning plate 403 are respectively passed through the first rod body 4011 and the second rod body 4012, and the mold limiting plate 402 and the end positioning plate 403 are respectively fixed to the two ends of the telescopic guide rod through the positioning nuts.

[0023] like Figure 2 , Figure 5 and Fig.10 As shown, the extrusion die 2 is provided with a through hole 201 for extruding the composite material and the metal piece to be pressed 14, and a traction member 6 is also provided on one side of the extrusion die 2, and the traction member 6 is used to connect the composite material to the metal piece to be pressed 14 and the external actuator 15; Under the traction of the external actuator 15 , the composite material and the metal piece to be pressed 14 pass through the through hole 201 in the transition zone 404 , so that the composite material and the metal piece to be pressed 14 are accurately, continuously and evenly extruded. Example

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, a composite material and metal extrusion connection molding device includes a support assembly 1, an extrusion die 2 and a bracket assembly 3; the support assembly 1 includes a support expansion mechanism 401, a die limit plate 402 provided on one side of the support expansion mechanism 401 for connecting the extrusion die 2, and an end positioning plate 403 provided on the other side of the support expansion mechanism 401 for connecting the bracket assembly 3; a transition zone 404 for the composite material and the metal to be pressed to be pulled and moved is formed between the die limit plate 402 and the end positioning plate 403, and the support expansion mechanism 401 is used to adjust the distance between the extrusion die 2 and the support assembly 1 along the pulling and moving direction of the composite material and the metal to be pressed The piece is changed, and the size of the transition zone 404 is specifically: The support expansion mechanism 401 includes a plurality of telescopic guide rods and a plurality of locking members 4013 corresponding to the telescopic guide rods and used to fix the mold limit plate 402 and the end positioning plate 403 to the telescopic guide rods. In this embodiment, the number of the telescopic guide rods is four, and the number of the locking members 4013 is eight; like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the telescopic guide rod includes a first rod body 4011 and a second rod body 4012, the first rod body 4011 is threadedly connected to the second rod body 4012, and the length of the telescopic guide rod is changed by screwing the two rod bodies, thereby changing the size of the transition zone 404 between the mold limit plate 402 and the end positioning plate 403; The mold limiting plate 402 and the end positioning plate 403 are both provided with four positioning holes 5 matching the first rod body 4011 and the second rod body 4012, and the ends of the first rod body 4011 and the second rod body 4012 that are away from each other are processed with threaded areas; the locking member 4013 is a positioning nut, and the positioning holes 5 on the mold limiting plate 402 and the end positioning plate 403 are respectively passed through the first rod body 4011 and the second rod body 4012, and the mold limiting plate 402 and the end positioning plate 403 are respectively fixed to the two ends of the telescopic guide rod through the positioning nuts; The extrusion die 2 is provided with a through hole 201 for extruding the composite material and the metal piece to be pressed 14 , and a traction piece 6 is also provided on one side of the extrusion die 2 .

[0025] like Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, a double-layer stepped through-hole groove 7 is also provided in the middle of the mold limiting plate 402, the left end of the through-hole groove 7 is adapted to the traction member 6, and the right end is adapted to the extrusion mold 2; the extrusion mold 2 includes a two-flank or multi-flank mold body 202, and the two-flank or multi-flank mold body 202 is assembled in the through-hole groove 7 to form a through hole 201 in the middle. In this embodiment, the extrusion mold 2 includes a two-flank mold body 202, and a first fixing hole 8 is provided on the mold limiting plate 402 around the double-layer stepped through-hole groove 7, and a second fixing hole 9 corresponding to the first fixing hole 8 is also provided on the side of the two-flank mold body 202, and the two-flank mold body 202 is fixedly connected to the mold limiting plate 402 by a fastener 10; The two halves of the mold body 202 are assembled in the through hole groove 7 to form a through hole 201 in the middle, so that the extrusion mold 2 with different through hole 201 sizes can be replaced, so that the extrusion mold 2 can meet the working conditions of different preset extrusion amounts, thereby improving applicability.

[0026] like Figure 2 , Figure 7 and Figure 8 As shown, the bracket assembly 3 includes a connected intermediate connecting member 301 and a support 302, and a connecting hole 11 matching the intermediate connecting member 301 is opened on the end positioning plate 403. Specifically: The intermediate connecting piece 301 is spliced ​​with the support 302, one end of the intermediate connecting piece 301 is fixedly connected with a transition threaded rod 3011, and the other end is provided with an ear plate group 3012; wherein the ear plate group 3012 is fixedly connected with the support 302, and the ear plate groups 3012 are connected through a pin shaft 13; the connecting hole 11 is threadedly connected with the transition threaded rod 3011.

[0027] like Figure 2 , Fig. 9 and Fig.10 As shown, it should be noted that the composite material and metal pressed piece 14 includes a composite material piece 1401 and preformed metal pieces 1402 pre-extruded at both ends of the composite material piece 1401; wherein the end surface of the preformed metal piece 1402 is provided with a threaded hole; The traction member 6 includes a body 601 and a threaded rod 602 matching the threaded hole on the end surface of the preformed metal member 1402. The traction member 6 is threadedly connected to the preformed metal member 1402. The main body 601 is provided with a mounting hole 12 , and the traction member 6 is connected to the external actuator 15 through the mounting hole 12 . Example

[0028] like Figure 2 , Figure 3 , Figure 5 , Fig. 9 and Fig.10As shown, a composite material and metal extrusion connection molding method, the method is based on the composite material and metal extrusion connection molding device mentioned above, the method comprises: Combine the preformed metal part 1402 prepared in advance by machining with the composite material part 1401 to form a composite material and metal pressed part 14; Determine the size of the transition zone 404 according to the size of the composite material and the metal pressed part 14, and adjust the length of each telescopic guide rod based on the determined size of the transition zone 404; Assemble the extrusion die 2 and the bracket assembly 3 to the support assembly 1; The composite material and the metal pressed part 14 are placed in the transition zone 404, and the end faces of the composite material and the metal pressed part 14 are aligned with the mouth of the through hole 201, and then the composite material and the metal pressed part 14 are connected to the traction member 6 by screwing; Use a level to check whether the composite material, the metal piece to be pressed 14, and the traction piece 6 are in a horizontal position. If the composite material, the metal piece to be pressed 14, and the traction piece 6 are in a horizontal position, connect the traction piece 6 to the external actuator 15; The external actuator 15 is started, and the composite material and the metal piece to be pressed 14 pass through the through hole 201 under the traction of the traction member 6, completing the pre-extrusion connection molding of the composite material and the metal piece to be pressed 14 at one end; The composite material and the metal piece to be pressed 14 are removed, and the other ends of the composite material and the metal piece to be pressed 14 are pre-extruded and connected to form in accordance with the above steps.

[0029] The extrusion die 2 is installed on the intermediate connection member 301 through the support expansion mechanism 401, and is fixed on the support 302 through the intermediate connection member 301. The support 302 is anchored to a rigid platform or the ground, that is, the extrusion die 2 is kept fixed due to the limitation of the support 302; The composite material and the metal part to be pressed 14 are connected to the external actuator 15 through the traction part 6. When the external actuator 6 pulls the composite material and the metal part to be pressed 14 to move horizontally outward, since the outer diameter of the through hole 201 formed in the middle of the extrusion die 2 is smaller than the outer diameter of the composite material and the metal part to be pressed 14, the composite material and the metal part to be pressed 14 produce radial plastic diameter change and outer diameter reduction, and pre-compression stress is generated at the connection interface between the composite material part 1401 and the preformed metal part 1402, and finally the composite material part 1401 and the preformed metal part 1402 are tightly combined into one, realizing the effective force transmission of the composite material and metal extrusion connection along the axial direction of the rod.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A composite material and metal extrusion connection molding device, characterized in that: It comprises a support component (1), an extrusion die (2) arranged on one side of the support component (1), and a bracket component (3) arranged on the other side of the support component (1); A transition zone (404) for pulling and moving the composite material and the metal piece to be pressed (14) is provided between the extrusion die (2) and the support assembly (1); The support assembly (1) comprises a support expansion mechanism (401), and the support expansion mechanism (401) is used to adjust the distance between the extrusion die (2) and the support assembly (1) along the pulling movement direction of the composite material and the metal piece to be pressed (14), thereby changing the size of the transition zone (404); The extrusion die (2) is provided with a through hole (201) for extruding the composite material and the metal piece to be pressed (14), and a traction member (6) is further provided on one side of the extrusion die (2), wherein the traction member (6) is used to connect the composite material, the metal piece to be pressed (14) and an external actuator (16); under the traction of the external actuator (16), the composite material and the metal piece to be pressed (14) pass through the through hole (201) in the transition zone (404), so that the composite material and the metal piece to be pressed (14) are continuously and evenly extruded and formed.

2. The composite material and metal extrusion connection molding device according to claim 1 is characterized in that: The support assembly (1) further comprises a die stop plate (402) provided on one side of the support expansion mechanism (401) for connecting to the extrusion die (2) and an end positioning plate (403) provided on the other side of the support expansion mechanism (401) for connecting to the bracket assembly (3); A transition zone (404) is formed between the mold limiting plate (402) and the end positioning plate (403).

3. The composite material and metal extrusion connection molding device according to claim 2 is characterized in that: The support expansion mechanism (401) comprises a plurality of telescopic guide rods and a plurality of locking members (4013) corresponding to the telescopic guide rods and used for fixing the mold limit plate (402) and the end positioning plate (403) to the telescopic guide rods; by changing the length of the telescopic guide rods, the size of the transition zone (404) between the mold limit plate (402) and the end positioning plate (403) is changed.

4. The composite material and metal extrusion connection molding device according to claim 3 is characterized in that: The telescopic guide rod comprises a first rod body (4011) and a second rod body (4012); the first rod body (4011) and the second rod body (4012) are threadedly connected, and the length of the telescopic guide rod can be changed by screwing the two rod bodies; The mold limiting plate (402) and the end positioning plate (403) are both provided with a plurality of positioning holes (5) matching the first rod body (4011) and the second rod body (4012); A threaded area is provided at one end of the first rod body (4011) and the second rod body (4012) which are away from each other, and the locking member (4013) is a positioning nut. The positioning holes (5) on the mold limiting plate (402) and the end positioning plate (403) are respectively passed through the first rod body (4011) and the second rod body (4012), and the mold limiting plate (402) and the end positioning plate (403) are respectively fixed to the two ends of the telescopic guide rod by the positioning nuts.

5. The composite material and metal extrusion connection molding device according to claim 2, characterized in that: The die limiting plate (402) is also provided with a double-layer stepped through-hole groove (7), one end of the through-hole groove (7) being adapted to the traction member (6) and the other end being adapted to the extrusion die (2).

6. The composite material and metal extrusion connection molding device according to claim 5, characterized in that: The extrusion die (2) comprises two or more halves of a die body (202); the two or more halves of the die body (202) are assembled in a through hole groove (7) to form a through hole (201) in the middle.

7. The composite material and metal extrusion connection molding device according to claim 5, characterized in that: The support assembly (3) comprises a connected intermediate connecting piece (301) and a support (302); The end positioning plate (403) is provided with a connection hole (11) matching the middle connection piece (301).

8. The composite material and metal extrusion connection molding device according to claim 7, characterized in that: One end of the intermediate connecting piece (301) is provided with a transition threaded rod (3011), and the other end is provided with an ear plate assembly (3012); The ear plate group (3012) is fixedly connected to the support (302), and the ear plate groups (3012) are connected via a pin shaft (13); The connection hole (11) is threadedly connected to the transition threaded rod (3011).

9. The composite material and metal extrusion connection molding device according to claim 1, characterized in that: The composite material and metal piece to be pressed (14) comprises a composite material piece (1401) and preformed metal pieces (1402) pre-extruded at both ends of the composite material piece (1401); The end surface of the preformed metal part (1402) is provided with a threaded hole; The traction member (6) comprises a body (601) and a threaded rod (602) matching the threaded hole on the end surface of the preformed metal member (1402); The traction member (6) is threadably connected to the preformed metal member (1402); The main body (601) is provided with a mounting hole (12) connected to an external actuator (15).

10. A composite material and metal extrusion connection molding method, characterized in that: The method is based on the composite material and metal extrusion connection molding device according to any one of claims 1 to 9, and the method comprises: Combining a preformed metal part (1402) prepared in advance by machining with a composite material part (1401) to form a composite material and metal part to be pressed (14); Determining the size of the transition zone (404) according to the size of the composite material and the metal part to be pressed (14), and adjusting the length of each telescopic guide rod based on the determined size of the transition zone (404); Assembling the extrusion die (2) and the bracket assembly (3) on the support assembly (1); Placing the composite material and the metal piece to be pressed (14) in the transition zone (404), aligning the end faces of the composite material and the metal piece to be pressed (14) with the mouth of the through hole (201), and then connecting the composite material and the metal piece to be pressed (14) to the traction piece (6) by screwing; If the composite material, the metal piece to be pressed (14), and the traction piece (6) are already in a horizontal position, the traction piece (6) is connected to the external actuator (15); The external actuator (15) is started, and the composite material and the metal piece to be pressed (14) are pulled through the through hole (201) by the pulling member (6), thereby completing the pre-extrusion connection and forming of the composite material and the metal piece to be pressed (14) at one end; The composite material and the metal piece to be pressed (14) are removed, and the other ends of the composite material and the metal piece to be pressed (14) are pre-extruded and connected to form the same according to the above steps.

Images