Hydraulic forming water injection rod concentric device

Abstract

The utility model discloses a hydraulic forming water injection rod concentric device which comprises a water injection rod, the water injection rod is connected with the output end of a driving piece, a ball head is formed at the end, away from a pipe, of the water injection rod, and the ball head can move relative to the output end of the driving piece. According to the utility model, the ball head is formed at one end, deviating from the pipe, of the water injection rod, and the ball head can move relative to the output end of the driving part, so that the water injection rod can rotate in the fixed plate, and therefore, when the driving part and the mold are slightly non-coaxial or the stress is non-uniform in the material supplementing process, the direction of the driving part can be adjusted according to the stress; therefore, the problem that the driving piece, the water injection rod and the mold are not coaxial can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water injection rod equipment, and more specifically to a hydraulic forming water injection rod concentric device. Background Art

[0002] Hydroforming technology is used to manufacture hollow parts with complex and variable cross-sections of pipes. To meet the needs of complex hollow parts, hydroforming dies are required. Figure 1 , Figure 2 The mold 1 3 and the mold 2 4 are pressed together by a press, the water injection rod 6 is connected and fixed to the horizontal cylinder, the horizontal cylinder moves toward both ends of the sealed pipe, and then injects liquid to form. Figure 2 At present, the water injection rod 6 is connected to the horizontal cylinder 1 through the adapter plate 7. The adapter plate 7 is fixed on the piston rod 2 (not shown) of the horizontal cylinder 1. The adapter plate 7 is fixedly connected with a fixing plate 8. Then the water injection rod 6 is placed in the fixing plate 8 and connected in a locking manner. However, such a connection will have the following defects:

[0003] 1) The water injection rod 6 and the mold cavity cannot be guaranteed to be completely concentric;

[0004] 2) Because the water injection rod 6 is not concentric with the mold cavity, the water injection rod 6 will contact the mold cavity during the forward movement, causing the water injection rod 6 to damage the mold;

[0005] 3) Unsmooth part filling causes part thinning and cracking. Utility Model Content

[0006] The technical problem to be solved by the utility model is how to avoid the water injection rod and the mold cavity from being out of center and thus causing damage to the mold cavity.

[0007] The utility model solves the above technical problems through the following technical means: a hydraulically formed water injection rod concentric device, including a water injection rod, which is connected to the output end of a driving member, and a ball head is formed on the end of the water injection rod away from the pipe, and the ball head can move relative to the output end of the driving member.

[0008] As a preferred technical solution, the ball head can rotate relative to the output end of the driving member.

[0009] As a preferred technical solution, the output end of the driving member is fixedly connected with a conversion member, and one end of the conversion member connected to the ball head is provided with a ball groove adapted thereto.

[0010] As a preferred technical solution, the adapter includes a fixing plate 1 and a fixing plate 2 fixed to the output end of the driving member, and two hemispherical grooves are provided on the fixing plate 1 and the fixing plate 2. The fixing plate 1 and the fixing plate 2 are enclosed and fixed to form the spherical grooves.

[0011] As a preferred technical solution, an output end of the driving member is fixedly connected with an adapter plate, and the adapter plate is fixedly connected to the first fixing plate and the second fixing plate.

[0012] As a preferred technical solution, the adapter plate is provided with grooves adapted to the first fixing plate and the second fixing plate.

[0013] As a preferred technical solution, the ball head is connected to the water injection rod via a connecting portion, the connecting portion is circumferentially provided with an annular groove, and the end surface of the output end of the driving member that cooperates with the ball head is also formed with a transition surface that matches the ball head.

[0014] As a preferred technical solution, the driving member includes a horizontal cylinder, and the output end of the horizontal cylinder includes a piston rod.

[0015] As a preferred technical solution, the fixing plate 1 and the fixing plate 2 are symmetrically arranged with respect to the water injection rod.

[0016] As a preferred technical solution, the end surface of the adapter plate is flush with the end surfaces of the first fixing plate and the second fixing plate.

[0017] The advantages of the utility model are:

[0018] (1) In the present invention, a ball head is formed on the end of the water injection rod away from the pipe, and the ball head is movable relative to the output end of the driving member, so that the water injection rod can rotate in the fixed plate. In this way, when the driving member and the mold are slightly out of axial alignment or the force is uneven during the material filling process, the driving member can adjust its direction according to the force size, thereby solving the problem of damage caused by the out of axial alignment between the driving member, the water injection rod and the mold.

[0019] (2) In the utility model, a connecting portion is provided between the ball head and the water injection rod, an annular groove is provided in the circumferential direction of the connecting portion, and a transition surface adapted to the ball head is formed on the end face of the output end of the driving member that cooperates with the ball head, so as to facilitate the rotation and adjustment of the ball head. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a mold structure provided as the background technology of the utility model;

[0021] Figure 2 A schematic diagram of the structure of the transfer plate provided as the background technology of the utility model;

[0022] Figure 3 The overall structural diagram provided for the embodiment of the utility model;

[0023] Figure 4 A schematic diagram of a cross-sectional structure provided for an embodiment of the utility model;

[0024] Figure numbers: 1. Horizontal cylinder; 2. Piston rod; 3. Mold 1; 4. Mold 2; 5. Pipe; 6. Water injection rod; 61. Ball head; 62. Concave surface; 7. Adapter plate; 8. Fixed plate; 9. Adapter plate; 10. Fixed plate 1; 11. Fixed plate 2. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 3 The hydraulic forming water injection rod concentric device comprises a water injection rod 6, an adapter plate 9, a driving member and an adapter. In the present embodiment, the driving member takes the horizontal cylinder 1 as an example. The output end of the driving member is connected to the water injection rod 6 through the adapter. The end of the water injection rod 6 away from the pipe 5 is formed with a ball head 61. The end of the adapter connected to the ball head 61 is provided with a ball groove matched with it. The ball head 61 can move relative to the output end of the driving member. In this way, when the driving member and the mold are slightly out of axis or the force is uneven during the feeding process, it can adjust its direction according to the force size. In this way, the problem of out of axis between the driving member, the water injection rod 6 and the mold can be solved.

[0027] It should be noted that, in the present embodiment, the water injection rod 6 is not coaxial with the mold, which means that the bottom of the water injection rod 6 is coplanar with the plane where the bottom of the mold 2 4, i.e., the bottom of the lower mold, is located, and there is a slight error. At the same time, as a preferred scheme, the bottom of the water injection rod 6 can be placed on the bottom of the mold 2 4, so that when the driving member drives the water injection rod 6 to move toward the mold, it can be adjusted according to the gap between the water injection rod 6 and the mold. When the driving member continues to drive the water injection rod 6 to move, it will not cause damage to the mold 1 3 and the mold 2 4. In order to realize the water injection function of the water injection rod 6, one end of the water injection rod 6 is sealed to one end of the pipe fitting, and a water injection channel is opened at the center. The adapter plate 7 is connected with a water injection pipe, and the main water pipe is connected to the water injection channel through the hole on the adapter plate 7.

[0028] See also Figure 4The adapter includes an adapter plate 9, a fixed plate 10, and a fixed plate 2 11. The telescopic end of the horizontal cylinder 1 includes a piston rod 2, and the piston rod 2 is fixedly connected to the adapter plate 9. The adapter plate 9 is provided with grooves that are compatible with the fixed plate 10 and the fixed plate 2 11. The fixed plate 10 and the fixed plate 2 11 are placed in the grooves in sequence. The fixed plate 10 and the fixed plate 2 11 are each provided with two hemispherical grooves. The fixed plate 10 and the fixed plate 2 11 are enclosed and fixed to form a spherical groove. The fixed plate 10 and the fixed plate 2 11 are symmetrically arranged about the water injection rod 6. The end face of the adapter plate 9 is flush with the end faces of the fixed plate 10 and the fixed plate 2 11. The fixed plate 10 and the fixed plate 2 11 can be fixedly connected to the adapter plate 9 by bolts.

[0029] See also Figure 4 The ball head 61 is connected to the water injection rod 6 through a connecting part, and a ring groove is formed around the connecting part. The end surface of the output end of the driving member that cooperates with the ball head 61 is also formed with a transition surface that matches the ball head 61, so as to facilitate the rotation of the ball head 61 and the fixing plate 10 and the fixing plate 2 11.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydraulic forming water injection rod concentric device, comprising a water injection rod (6), wherein the water injection rod (6) is connected to an output end of a driving member, characterized in that: A ball head (61) is formed on one end of the water injection rod (6) that is away from the pipe (5), and the ball head (61) can move relative to the output end of the driving member.

2. The hydraulic forming water injection rod concentric device according to claim 1, characterized in that: The ball head (61) is capable of rotating relative to the output end of the driving member.

3. The hydraulic forming water injection rod concentric device according to claim 1 or 2, characterized in that: The output end of the driving member is fixedly connected with a conversion member, and one end of the conversion member connected to the ball head (61) is provided with a ball groove adapted thereto.

4. The hydraulic forming water injection rod concentric device according to claim 3, characterized in that: The adapter comprises a fixing plate 1 (10) and a fixing plate 2 (11) fixed to the output end of the driving member, and two hemispherical grooves are provided on the fixing plate 1 (10) and the fixing plate 2 (11), and the fixing plate 1 (10) and the fixing plate 2 (11) are enclosed and fixed to form the hemispherical grooves.

5. The hydraulic forming water injection rod concentric device according to claim 4, characterized in that: An adapter plate (9) is fixedly connected to the output end of the driving member, and the adapter plate (9) is fixedly connected to a first fixing plate (10) and a second fixing plate (11).

6. The hydroforming water injection rod concentric device according to claim 5, characterized in that: The adapter plate (9) is provided with grooves adapted to the first fixing plate (10) and the second fixing plate (11).

7. The hydroforming water injection rod concentric device according to claim 1, characterized in that: The ball head (61) is connected to the water injection rod (6) via a connecting portion, the connecting portion is provided with an annular groove in the circumference, and the end surface of the output end of the driving member that matches the ball head (61) is also formed with a transition surface that matches the ball head (61).

8. The hydroforming water injection rod concentric device according to claim 1, characterized in that: The driving member comprises a horizontal cylinder (1), and the output end of the horizontal cylinder (1) comprises a piston rod (2).

9. The hydroforming water injection rod concentric device according to claim 4, characterized in that: The fixing plate 1 (10) and the fixing plate 2 (11) are symmetrically arranged with respect to the water injection rod (6).

10. The hydroforming water injection rod concentric device according to claim 5, characterized in that: The end surface of the adapter plate (9) is flush with the end surfaces of the first fixing plate (10) and the second fixing plate (11).

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