A self-piercing riveting device for magnesium alloy parts

Abstract

This utility model discloses a self-piercing riveting device for magnesium alloy parts, comprising: a base plate, a fixed seat fixed to the top surface of the base plate, a die mounted on the top of the fixed seat, a riveting mechanism located directly above the die, and a pair of support components disposed on the left and right sides of the die; the support components include: a flat support plate, a vertical support rod fixed to the bottom surface of the support plate, a vertical screw rod whose top end is rotatably connected to the bottom end of the support rod via a bearing, a vertical threaded sleeve fixed to the top surface of the base plate and threadedly connected to the screw rod, a vertical guide rod fixed to the bottom surface of the support plate, and a vertical guide sleeve fixed to the top surface of the base plate and slidably engaged with the guide rod. This self-piercing riveting device can perform self-piercing riveting on two magnesium alloy parts that are only joined at their ends, and makes the self-piercing riveting process more stable.

Description

Technical Field

[0001] This utility model relates to a self-piercing riveting device for magnesium alloy parts. Background Technology

[0002] Self-piercing riveting is a cold joining technique used to join two or more metal sheets. Existing self-piercing riveting devices can reliably perform self-piercing riveting on two completely stacked metal sheets, but it is not easy to reliably perform self-piercing riveting on two metal sheets that are only joined at the ends. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a self-piercing riveting device for magnesium alloy parts, comprising: a base plate, a fixed seat fixed to the top surface of the base plate, a die mounted on the top of the fixed seat, a riveting mechanism (including a pressure ring, a punch, etc.) located directly above the die and cooperating with the die to perform self-piercing riveting on semi-hollow rivets, and a pair of support components respectively located on the left and right sides of the fixed seat and the die.

[0004] The support assembly includes: a flat support plate, a vertical support rod fixed to the bottom surface of the support plate, a vertical screw rod whose top end is rotatably connected to the bottom end of the support rod via a flat bearing (the inner ring of the bearing is fixed to the bottom end of the support rod, and the outer ring of the bearing is fixed to the top end of the screw rod), a vertical threaded sleeve fixed to the top surface of the base plate and threadedly connected to the screw rod (the lower part of the screw rod extends into the threaded sleeve), a vertical guide rod fixed to the bottom surface of the support plate, and a vertical guide sleeve fixed to the top surface of the base plate and vertically slidingly engaged with the guide rod (the lower part of the guide rod extends into the guide sleeve).

[0005] Preferably, the support assembly further includes: a through groove formed on the top surface of the support plate and extending in the left-right direction (the through groove includes a flat bottom wall and a pair of vertical side walls extending in the left-right direction).

[0006] Preferably, the support assembly further includes: four arc-shaped spring pieces (the arc-shaped spring pieces protrude from the side wall of the through groove) respectively disposed at the left and right ends of a pair of side walls of the through groove.

[0007] Preferably, the support assembly further includes: four mounting slots (which also extend left and right) respectively disposed at the left and right ends of a pair of side walls of the through groove, corresponding one-to-one with the four arc-shaped spring pieces and used to install the corresponding arc-shaped spring pieces.

[0008] Preferably, the two ends of the arc-shaped spring are fixed in the corresponding mounting grooves (the arc-shaped spring protrudes from the mounting groove where it is located).

[0009] Preferably, the screw is a fine-tuning screw.

[0010] The advantages and beneficial effects of this utility model are as follows: It provides a self-piercing riveting device for magnesium alloy parts, which can perform self-piercing riveting on two strip-shaped magnesium alloy parts (i.e., long strip-shaped magnesium alloy parts) that are only joined at their ends, and can make the implementation of self-piercing riveting more stable.

[0011] Specifically, when performing self-piercing riveting on two strip-shaped magnesium alloy parts (i.e., long strip-shaped magnesium alloy parts) that are only joined at their ends, this utility model makes the implementation of self-piercing riveting more stable through the following measures:

[0012] 1) Adjust the left support assembly: By rotating the screw of the left support assembly, the support plate of the left support assembly is raised and lowered until the bottom wall of the through groove of the left support assembly is level with the top of the die; thus, the first strip magnesium alloy part (i.e. the lower strip magnesium alloy part) can be placed flat on the bottom wall of the through groove of the left support assembly, and the right end of the first strip magnesium alloy part can be placed flat on the top of the die.

[0013] 2) The four arc-shaped springs of the left support component clamp and secure the first strip-shaped magnesium alloy piece;

[0014] 3) Adjust the right support assembly: Rotate the screw of the right support assembly to raise and lower the support plate of the right support assembly until the bottom wall of the through groove of the right support assembly is flush with the top surface of the first strip magnesium alloy piece (i.e., the lower strip magnesium alloy piece); thereby allowing the second strip magnesium alloy piece (i.e., the upper strip magnesium alloy piece) to be placed flat on the bottom wall of the through groove of the right support assembly, and the left end of the second strip magnesium alloy piece to be placed flat on the top surface of the first strip magnesium alloy piece.

[0015] 4) The four arc-shaped springs of the right-side support component clamp the second strip magnesium alloy piece.

[0016] More specifically, this utility model adjusts the left or right support assembly through the following process: When adjusting the left or right support assembly, since the screw is threadedly connected to the screw sleeve fixed on the top surface of the base plate, the screw can rise and fall relative to the screw sleeve and the base plate when it rotates. The screw can drive the support rod to rise and fall synchronously through the bearing, and then the support rod drives the support plate to rise and fall synchronously. The guide rod on the bottom surface of the support plate rises and falls synchronously with the support plate. Since the guide rod is vertically slidingly engaged with the guide sleeve fixed on the top surface of the base plate, the guide rod can prevent the support plate and the support rod from rotating with the screw, so that the through groove on the support plate is always set in the left and right direction, that is, always facing the cavity of the fixed seat. Attached Figure Description

[0017] Figure 1 This is a front view schematic diagram of the present invention;

[0018] Figure 2 This is a top view of the present invention. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0020] The specific technical solution of this utility model is as follows:

[0021] like Figure 1 and Figure 2 As shown, this utility model provides a self-piercing riveting device for magnesium alloy parts, including: a base plate 1, a fixed seat 21 fixed on the top surface of the base plate 1, a die 22 installed on the top of the fixed seat 21, a riveting mechanism 23 (including a pressure ring, a punch, etc.) located directly above the die 22 and cooperating with the die 22 to perform self-piercing riveting on semi-hollow rivets, and a pair of support components A and B respectively located on the left and right sides of the fixed seat 21 and the die 22;

[0022] The support components A and B include: a flat support plate 3; a through groove 31 extending from the top surface of the support plate 3 in the left-right direction (the through groove 31 includes a flat bottom wall extending in the left-right direction and a pair of vertical side walls); four arc-shaped spring pieces 4 (the arc-shaped spring pieces 4 protrude from the side walls of the through groove 31) respectively disposed at the left and right ends of the pair of side walls of the through groove 31; four mounting slots 32 (the mounting slots 32 also extend in the left-right direction) respectively disposed at the left and right ends of the pair of side walls of the through groove 31, corresponding one-to-one with the four arc-shaped spring pieces 4; and a vertical support rod 51 fixed to the bottom surface of the support plate 3, the top end of which is connected to the support rod 51 by a flat bearing 52. The bottom end is rotatably connected to a vertical screw 53 (the inner ring of the bearing 52 is fixed to the bottom end of the support rod 51, and the outer ring of the bearing 52 is fixed to the top end of the screw 53); a vertical screw sleeve 54 is fixed to the top surface of the base plate 1 and threadedly connected to the screw 53 (the lower part of the screw 53 extends into the screw sleeve 54); a vertical guide rod 61 is fixed to the bottom surface of the support plate 3; and a vertical guide sleeve 62 is fixed to the top surface of the base plate 1 and vertically slides with the guide rod 61 (the lower part of the guide rod 61 extends into the guide sleeve 62); the two ends of the arc-shaped spring piece 4 are fixed in the corresponding mounting groove 32 (the arc-shaped spring piece 4 protrudes from the mounting groove 32 in which it is located); the screw 53 is a fine-tuning screw 53.

[0023] The self-piercing riveting device of this utility model can perform self-piercing riveting on two strip-shaped magnesium alloy parts (i.e., long strip-shaped magnesium alloy parts) 71 and 72 using semi-hollow rivets. The working principle includes:

[0024] Install the die 22 on the top of the fixed base 21 (the installation method of the die 22 and the top of the fixed base 21 can adopt the existing method, as long as the die 22 can be fixed on the top of the fixed base 21 and the normal use of the die 22 is not affected).

[0025] Then adjust the left support component A: rotate the screw 53 of the left support component A to raise and lower the support plate 3 of the left support component A until the bottom wall of the through groove 31 of the left support component A is level with the top of the die 22.

[0026] Then, the first strip magnesium alloy part 71 (i.e. the lower strip magnesium alloy part) is placed flat in the through groove 31 of the left support component A (the bottom surface of the first strip magnesium alloy part 71 is placed flat on the bottom wall of the through groove 31 of the left support component A), so that the right end of the first strip magnesium alloy part 71 extends out of the through groove 31 of the left support component A, and the right end of the first strip magnesium alloy part 71 is placed flat on the top of the die 22, and the four arc-shaped spring pieces 4 of the left support component A clamp the first strip magnesium alloy part 71.

[0027] Then adjust the right support component B: by rotating the screw 53 of the right support component B, the support plate 3 of the right support component B is raised or lowered until the bottom wall of the through groove 31 of the right support component B is level with the top surface of the first strip magnesium alloy part 71 (i.e. the lower strip magnesium alloy part).

[0028] Then, the second strip magnesium alloy part 72 (i.e. the upper strip magnesium alloy part) is placed flat in the through groove 31 of the right support component B (the bottom surface of the second strip magnesium alloy part 72 is placed flat on the bottom wall of the through groove 31 of the right support component B), so that the left end of the second strip magnesium alloy part 72 extends out of the through groove 31 of the right support component B, so that the left end of the second strip magnesium alloy part 72 is located directly above the die 22, and the left end of the second strip magnesium alloy part 72 is placed flat on the top surface of the first strip magnesium alloy part 71, and the four arc-shaped spring pieces 4 of the right support component B clamp the second strip magnesium alloy part 72.

[0029] Then, the riveting mechanism 23 (which includes a pressure ring, a punch, etc.) directly above the die 22 uses semi-hollow rivets to perform self-piercing riveting on the two strip-shaped magnesium alloy parts (i.e., long strip-shaped magnesium alloy parts) 71 and 72 above the die 22. (The riveting mechanism 23, which works with the die 22 to perform self-piercing riveting on the semi-hollow rivets, is existing technology, and the specific self-piercing riveting process is also existing technology. Therefore, the specific structure of the riveting mechanism 23 and the specific self-piercing riveting process can be referred to the existing technology and will not be described in detail here.)

[0030] More specifically, when adjusting the left support assembly A or the right support assembly B, since the screw 53 is threadedly connected to the screw sleeve 54 fixed on the top surface of the base plate 1, the screw 53 can rise and fall relative to the screw sleeve 54 and the base plate 1 when it rotates. The screw 53 can drive the support rod 51 to rise and fall synchronously through the bearing 52, and then the support rod 51 drives the support plate 3 to rise and fall synchronously. The guide rod 61 on the bottom surface of the support plate 3 rises and falls synchronously with the support plate 3. Since the guide rod 61 is vertically slidingly engaged with the guide sleeve 62 fixed on the top surface of the base plate 1, the guide rod 61 can prevent the support plate 3 and the support rod 51 from rotating together with the screw 53, so that the through groove 31 on the support plate 3 is always set in the left and right direction, that is, always facing the cavity 22 of the fixed seat 21.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A self-piercing riveting apparatus for magnesium alloy pieces, characterized by, include: The base plate, the fixed seat fixed on the top surface of the base plate, the die mounted on the top of the fixed seat, the riveting mechanism located directly above the die, and a pair of support components located on the left and right sides of the die. The support assembly includes: a flat support plate, a vertical support rod fixed to the bottom surface of the support plate, a vertical screw rod whose top end is rotatably connected to the bottom end of the support rod via a bearing, a vertical screw sleeve fixed to the top surface of the base plate and threadedly connected to the screw rod, a vertical guide rod fixed to the bottom surface of the support plate, and a vertical guide sleeve fixed to the top surface of the base plate and slidably engaged with the guide rod.

2. The self-piercing riveting device for magnesium alloy parts according to claim 1, characterized in that, The support assembly further includes a through groove formed on the top surface of the support plate and extending in the left-right direction.

3. The self-piercing riveting device for magnesium alloy parts according to claim 2, characterized in that, The support assembly also includes four arc-shaped spring pieces disposed at the left and right ends of a pair of side walls of the through groove.

4. The self-piercing riveting device for magnesium alloy parts according to claim 3, characterized in that, The support assembly also includes four mounting slots located at the left and right ends of a pair of sidewalls of the through groove for mounting arc-shaped spring pieces.

5. The self-piercing riveting device for magnesium alloy parts according to claim 4, characterized in that, The two ends of the arc-shaped spring are fixed in the corresponding mounting grooves.

6. The self-piercing riveting device for magnesium alloy parts according to claim 1, characterized in that, The screw is a fine-tuning screw.

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