CN105057344A - Continuous differential-thickness plate rotation rolling mold - Google Patents

Abstract

The invention discloses a continuous differential-thickness plate rotation rolling mold. The continuous differential-thickness plate rotation rolling mold comprises an upper mold plate, a lower mold plate and a rolling assembly arranged between the upper mold plate and the lower mold plate. The rolling assembly comprises a lead screw arranged in the mold combining direction, a roll fixing plate in threaded fit with the lead screw, and a roll arranged in the radial direction of the lead screw and rotationally connected to the roll fixing plate. A rolling mill does not need to be adopted, a rolling production line does not need to be established, and a round differential-thickness plate with the continuous thickness change can be produced with the low cost.

Description

Rotary Rolling Die for Continuous Differential Thick Plate

technical field

The invention relates to the field of dies, in particular to a rotary rolling die for continuous differential thickness plates.

Background technique

At present, in the manufacture of automobile body parts, variable thickness plates are usually used to greatly reduce their weight. There are usually two ways to manufacture variable thickness plates, one is laser tailor welded blanks, and the other is through flexible rolling production process The obtained continuous differential thick plate, among which the TRB plate (Tailor Rolling Blanks, TRB) is more researched. There are weld seams in the transition zone of tailor welded blanks, which affect the surface quality of stamping parts. In order to solve these problems, Germany took the lead in developing the TRB plate, which was obtained through flexible rolling. During the rolling process, the rolls were controlled in real time, and the gap between the rolls was adjusted online to achieve continuous changes in the thickness of the transition zone. However, due to the characteristics of rolling production, the thickness of the sheet produced can only be changed along the feeding direction, and it is impossible to roll a circular plate with poor thickness.

Therefore, in order to solve the above problems, there is a need for a continuous differential thickness plate rotary rolling die that can produce circular differential thickness plates with continuously changing thickness at low cost without using a rolling mill or building a rolling production line.

Contents of the invention

In view of this, the purpose of the present invention is to provide a continuous differential thickness plate rotary rolling die that can produce circular differential thickness plates with continuously changing thickness at low cost without using a rolling mill or building a rolling production line.

The rotary rolling die for continuous differential thick plate of the present invention comprises an upper die plate, a lower die plate and a rolling assembly arranged between the upper die plate and the lower die plate, the rolling assembly includes a screw rod arranged along the mold clamping direction, and the rolling assembly The screw rod is threaded through a roll fixing plate and a roll arranged along the radial direction of the screw rod and rotatably connected to the roll fixing plate;

Further, the upper end of the screw rod is fixed on the upper template; the lower template is fixed with a limiting plate for limiting the roll fixing plate along the axial direction of the screw rod, and the rolling fixing plate is arranged on the lower template and the limiting plate. between boards;

Further, balls are arranged between the limiting plate and the roller fixing plate, and the bottom surface of the limiting plate and the top surface of the roller fixing plate are provided with an annular guide groove for guiding the rolling of the balls;

Further, the lower formwork is fixed with a height adjustment block for supporting the limit plate, and the height adjustment block is fixed to the lower formwork by an adjustment screw;

Further, the bottom surface of the roll fixing plate is provided with an annular installation groove for installing the roll, and the rolls are provided with a plurality of them and are evenly distributed in the circumferential direction and installed in the annular installation groove;

Further, the lower template is slidably fitted with a mold opening ejector pin for ejecting the processed workpiece along the vertical direction;

Further, the bottom surface of the upper template is provided with a screw fixing plate for fixing and installing the screw.

The beneficial effects of the present invention are: the rotary rolling die for continuous differential thick plate of the present invention, under the pressure of the upper working table of the press, drives the lower template and the screw to move downward, and the screw and the roll fixing plate are threadedly matched, therefore, The axial movement of the screw is converted into the rotational movement of the roller fixing plate around the screw through the screw thread, so as to drive the roll to rotate around the screw and roll the round billet placed on the lower platen. By adjusting the height of the roll, it can be rolled out Round difference thick plate.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

Fig. 1 is a structural schematic diagram of the present invention.

Detailed ways

Fig. 1 is a structural schematic diagram of the present invention, as shown in the figure, the rotary rolling die for continuous differential thick plate in this embodiment includes an upper die plate 1, a lower die plate 8 and a rolling die set between the upper die plate 1 and the lower die plate 8 The rolling assembly includes a screw 2 arranged along the mold clamping direction, a roll fixing plate 5 threadedly engaged with the screw 2, and a roller fixed plate 5 arranged radially along the screw 2 and rotatably connected to the roll fixing plate 5. The roll 11, the rotary rolling die for continuous differential thick plate in this embodiment, under the pressure of the working table on the press, drives the lower template 8 and the screw 2 to move downward, and the screw 2 and the roll fixing plate 5 are threadedly matched, so , the axial movement of the screw mandrel 2 is converted into the rotational movement of the roller fixing plate 5 around the screw mandrel 2 through the thread, thereby driving the roll 11 to rotate around the screw mandrel 2 and rolling the circular billet placed on the lower template 8, by adjusting The height of the roll 11 can roll out the circular thick plate.

In this embodiment, the upper end of the screw rod 2 is fixed on the upper template 1; the lower template 8 is fixedly provided with a limit plate 4 for axially limiting the roll fixing plate 5 along the screw rod 2, and the roll fixing plate 5 is arranged between the lower template 8 and the limiting plate 4. During the rolling process of the workpiece 10, the limiting plate 4 can ensure that the roll 11 can always be pressed against the workpiece 10 to be processed.

In this embodiment, balls are arranged between the limiting plate 4 and the roll fixing plate 5, and the bottom surface of the limiting plate 4 and the top surface of the rolling fixing plate 5 are provided with an annular guide groove 12 for guiding the rolling of the balls. When the workpiece is 10, the limiting plate 4 exerts pressure on the roll fixing plate 5 through the balls. At the same time, because the rolling process, the rolling fixing plate 5 will rotate relative to the limiting plate 4, therefore, the balls can effectively reduce the roll fixing plate. 5 and the frictional force between the limiting plate 4, and the 12 annular guide grooves are arc-shaped grooves that are compatible with the balls, which can effectively reduce the contact stress of the balls.

In this embodiment, the lower template 8 is fixed with a height adjustment block 6 for supporting the limit plate 4, and the height adjustment block 6 is fixed to the lower template 8 by an adjustment screw 7, and can be adjusted by rotating the adjustment screw 7. The height of the height adjustment block 6 relative to the lower template 8 is further adjusted to the height of the limiting plate 4 .

In this embodiment, the bottom surface of the roll fixing plate 5 is provided with an annular installation groove for installing the roll 11, and the rolls 11 are provided with a plurality of them and are evenly distributed along the circumference and installed in the annular installation groove; the side wall of the roll fixing plate 5 There is also a through hole for installing the rotating shaft of the roll 11 along the radial direction, and the rolling roll 11 is installed in the annular installation groove and is rotatably connected with the roll fixing plate 5 through the rotating shaft of the roll 11 .

In this embodiment, the lower template 8 is slidably fitted with a die-opening ejector pin 9 for ejecting the workpiece 10 in the vertical direction; Moving downwards and upwards, the roller fixing plate 5 is lifted up, which is convenient for putting in blanks and taking out products.

In this embodiment, the bottom surface of the upper template 1 is provided with a screw fixing plate 3 for fixing and installing the screw 2. The screw fixing plate can be fixed to the upper template 1 by screws, and the screw 2 can be fixed to the upper template 1 by means of key connection or the like. Upper template 1.

Finally, it is noted that the above invention is only used to illustrate the technical solution of the present invention without limitation. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified Or an equivalent replacement without departing from the spirit and scope of the technical solution of the present invention, all of which shall be covered by the scope of the claims of the present invention.

Claims (7)

1. A rotary rolling die for continuous differential thick plates, characterized in that: it includes an upper die plate, a lower die plate and a rolling assembly arranged between the upper die plate and the lower die plate; The screw mandrel, the roll fixing plate threadedly engaged with the screw mandrel, and the roll arranged along the radial direction of the screw mandrel and rotatably connected to the roll fixing plate. 2. The rotary rolling die for continuous differential thick plate according to claim 1, characterized in that: the upper end of the screw rod is fixed on the upper die plate; The position limiting plate, the roll fixing plate is arranged between the lower template and the limiting plate. 3. The rotary rolling die for continuous differential thick plate according to claim 2, characterized in that: balls are arranged between the limiting plate and the roll fixing plate, and the bottom surface of the limiting plate and the top surface of the rolling fixing plate are set There is an annular guide groove for guiding the rolling of the balls. 4. The rotary rolling die for continuous differential thick plate according to claim 2, characterized in that: the lower template is fixed with a height adjustment block for supporting the limit plate, and the height adjustment block is fixed by an adjustment screw in the following template. 5. The rotary rolling die for continuous differential thick plate according to claim 1, characterized in that: the bottom surface of the roll fixing plate is provided with an annular installation groove for installing the roll, and the roll is provided with multiple and uniform along the circumferential direction Distributed and installed in the ring-shaped installation groove. 6. The rotary rolling die for continuous differential thick plate according to claim 1, characterized in that: the lower die plate is slid and fit along the vertical direction with a die-opening ejector pin for ejecting the processed workpiece. 7. The rotary rolling die for continuous differential thick plate according to claim 1, characterized in that: the bottom surface of the upper template is provided with a screw fixing plate for fixing and installing the screw.