CN203875167U - Unequal-thickness plate fixed-die action-roller follow-up forming device - Google Patents

Abstract

A moving roller follow-up forming device for a fixed mold with differential thickness, the upper mold is connected with the mold opening and closing mechanism, and the upper mold is movable along the Z direction; the forming rolls are symmetrically arranged on both sides of the upper mold and the fixed lower mold, The roll set is composed of multi-pass forming roll pairs, and the forming angle of the forming roll pair increases gradually from the first pass to the last pass; each roll of the forming roll set is designed for independent active rotation, and is controlled by an adjustable Driven by an independent servo motor; the forming roll group is equipped with a flexible adaptive device with a spring or a constant pressure hydraulic cylinder in the Y direction; the pass spacing between the forming roll pairs in the forming roll group is a fixed value; the forming of each pass The roll spacing between the roll pairs can be adjusted independently. The utility model solves the problem in the prior art that it is difficult to form thick plates with longitudinal differences; the method is simple in technology and low in implementation cost.

Description

A moving roller follow-up forming device for a fixed mold with a differential thickness plate

technical field

The utility model relates to the field of profile processing technology and equipment technology, in particular to a movable roller follow-up forming device for a fixed mold with differential thickness.

Background technique

In recent years, automobile lightweight, as one of the important ways to save energy and reduce emissions, is being valued by major automobile manufacturers. In order to realize the lightweight of the whole vehicle, it is necessary to reduce the weight of the structural parts. The thickness of the part is designed according to the load-bearing condition of the part, and the weight of the part can be effectively reduced under the same load-bearing condition.

The emergence of laser tailor welded blanks solves the above problems to a certain extent, but laser tailor welded blanks have problems such as sudden changes in sheet thickness, differences in wood bearing capacity, and hardening of weld machine-affected zones. The emergence of poor thick plates realizes the flexible and excessive connection of thin and thick plates, and has good surface quality. At present, the parts produced by differential thick plates are mainly used in body structures, including hood panels, body chassis, motor spacer guide rails, etc.

At present, the traditional roll forming technology has the advantages of high forming efficiency, but because the roll gap cannot be adjusted in real time, it can only be formed for laser tailor welded blanks or other equal-thickness plates. In order to achieve high-efficiency production of differential thickness plates, it is necessary to design a new forming process.

Utility model content

The purpose of this utility model is to design a new type of movable roller follow-up forming device for fixed mold of differential thickness plate, so as to solve the above-mentioned problems.

In order to achieve the above object, the technical scheme adopted by the utility model is as follows:

A follow-up forming device for movable rolls of a fixed die with differential thickness, comprising an upper die (1), a fixed lower die (5), a forming roll set (2), a die opening and closing mechanism (4) and a forming roll set moving mechanism;

The fixed lower mold (5) is fixedly arranged, the upper mold (1) is connected to the mold opening and closing mechanism (4), and the upper mold (1) is movable along the Z direction;

The forming roll group (2) is symmetrically arranged on both sides of the upper die (1) and the fixed lower die (5), and the forming roll group (2) is composed of multi-pass forming roll pairs. The forming angle of the pair of forming rolls is gradually increased from the first pass to the last pass; each roll of the forming roll set (2) is designed for independent active rotation, and is driven by an independent servo motor with adjustable speed; The forming roll group (2) is equipped with a flexible self-adaptive device with a spring or a constant pressure hydraulic cylinder in the Y direction;

The moving mechanism of the forming roll set includes an X-direction moving mechanism and a Y-direction moving mechanism; the forming roll set (2) is connected with the forming roll set moving mechanism; The direction of movement is servo controlled;

The pass spacing between the forming roll pairs in the forming roll set (2) is a fixed value; the roll spacing between the forming roll pairs in each pass can be adjusted independently;

Wherein, the feeding direction of the formed part is the X direction, the direction perpendicular to the X direction in the processing plane is the Y direction; the direction perpendicular to the processing plane is the Z direction.

The mold opening and closing mechanism (4) includes at least two synchronous hydraulic cylinders; the two synchronous hydraulic cylinders serve as the power source for the movement of the upper mold (1) in the Z direction.

The forming roll group (2) is made up of forming roll pairs of five passes, and the forming angles of the forming roll pairs are 10°, 30°, 50°, 70° and 90°.

The flexible adaptive device is a spring installed in the Y direction or a constant pressure hydraulic cylinder.

The beneficial effects of the utility model can be summarized as follows:

1. The utility model solves the problem in the prior art that it is difficult to form thick plates with longitudinal differences.

2. The technical solution of the utility model uses longitudinally variable-thickness steel plates as raw materials, and enters the fixed mold moving roller follow-up forming device through the feeding device, processes it into the required cross-sectional shape, and then obtains the required cross-sectional shape through the cutting device and the output device. Sheet metal parts; the method is simple in process and low in implementation cost.

Description of drawings

Fig. 1 is a top view of the bending forming technology of fixed die moving roll follower roll for differential thick plate provided by the utility model

Fig. 2 is the axonometric view of the movable roll follow-up roll bending forming technology of the differential thick plate fixed mold provided by the utility model

Figure 3 is an example of a plate part with differential thickness;

Among them, 1-upper mold, 2-forming roll group, 3-different thick plate, 4-opening and closing mold mechanism, 5-fixed lower mold.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Fig. 1 to Fig. 3, a moving roller follow-up forming device for a fixed die of a differential thick plate comprises an upper die 1, a fixed lower die 5, a forming roll group 2, a mold opening and closing mechanism 4 and a forming roll group moving mechanism; The fixed lower mold 5 is fixed, the upper mold 1 is connected to the mold opening and closing mechanism 4, and the upper mold 1 is movable along the Z direction; the forming roll group 2 is symmetrically arranged on the upper mold 1 and both sides of the fixed lower die 5, the forming roll group 2 is composed of multiple pass forming roll pairs, the forming angle of the forming roll pair is gradually increasing from the first pass to the last pass; the forming roll Each roll of group 2 is designed for independent active rotation, and is driven by an independent servo motor with adjustable speed; the forming roll group 2 is equipped with a flexible adaptive device of a spring or a constant pressure hydraulic cylinder in the Y direction; the The forming roll group movement mechanism includes an X-direction movement mechanism and a Y-direction movement mechanism; the forming roll set 2 is connected with the forming roll set movement mechanism; the movement of the forming roll set 2 in the X direction and the Y direction is servo Control; the pass spacing between the forming roll pairs in the forming roll set 2 is a fixed value; the roll spacing between the forming roll pairs in each pass can be adjusted independently; wherein, the The feeding direction of the formed part is the X direction, the direction perpendicular to the X direction in the processing plane is the Y direction; the direction perpendicular to the processing plane is the Z direction.

In a more preferred embodiment, the mold opening and closing mechanism 4 includes at least two synchronous hydraulic cylinders; the two synchronous hydraulic cylinders serve as the power source for the upper mold 1 to move along the Z direction.

In a more preferred embodiment, the forming roll group 2 is composed of forming roll pairs of five passes, and the forming angles of the forming roll pairs are 10°, 30°, 50°, 70° and 90°.

In a more preferred embodiment, the flexible adaptive device is a spring installed in the Y direction or a constant pressure hydraulic cylinder.

In a specific embodiment:

As shown in Figure 1, a differential thick plate fixed mold moving roller follow-up forming technology uses longitudinally variable thickness differential thick plate 3 as raw material, and enters the differential thick plate fixed mold movable roller follow-up forming device through the feeding device to complete the required parts The cross-sectional shape is formed, and then through the cutting device, the parts output device obtains the required formed sheet metal parts. The follow-up forming device for differential thickness plates includes a fixed lower die, an upper die 1 that can translate in the vertical direction, and a forming roll group 2 that can move in the X and Y directions in the horizontal plane.

The movement of the upper mold 1 in the vertical direction is driven by a hydraulic cylinder. When forming, the hydraulic cylinder tightly presses the differential plate 3 on the fixed lower die. After the forming is completed, the hydraulic cylinder lifts the upper mold 1, and the parts are sent to the cutting device and the output device.

The forming roll group 2 that can move in the X and Y directions on the horizontal plane, its forming angle gradually increases from left to right, and the forming angle of the last set of rolls can be adjusted according to the bending angle of different thick plates at different sections Follow the swing. The forming roll group is equipped with flexible self-adaptive devices of springs or constant pressure hydraulic cylinders in the Y direction. When the forming roll group collides with the poor thickness plate and the upper die due to control errors, the forming force is greater than the preload of the spring, and the spring can be compressed adaptively, thereby protecting the drive device in the X and Y directions of the roll group.

Each roll of the forming roll group can actively rotate during forming, and is driven by a servo motor, and the speed can be adjusted to ensure the forming quality of the thick plate.

The movement of the roller group in the X direction and the Y direction can be controlled by servo, so that the forming roller group can move along the contour of the upper die 1 and the thickness change of the difference thickness plate in the X direction under the servo motion control, so that the difference thickness The plates are gradually bent to the desired angle.

The utility model relates to a follow-up forming technology of movable rollers of a fixed mold with differential thickness plates, which belongs to the field of sheet metal forming, and has solved the problem that the prior art is difficult to form vertical differential thickness plates. In this technical solution, steel plates with longitudinally variable thickness are used as raw materials, which are fed into fixed die moving roller follow-up forming devices through feeding devices, processed into required cross-sectional shapes, and then required sheet metal parts are obtained through cutting devices and output devices. The utility model also relates to a fixed-die moving roller follow-up forming device for forming differential thick plates, which includes a fixed lower die, an upper die that can move in vertical direction, and a roll that can move in the X direction and Y direction in the horizontal plane. Group. The forming of the U-shaped cross-section of the differential thick plate can be realized by following the contour track of the upper die in the X and Y directions of the roll group.

The utility model has been described in detail through specific and preferred embodiments above, but those skilled in the art should understand that the utility model is not limited to the above-described embodiments, and within the spirit and principles of the utility model, Any modifications, equivalent replacements, etc. should be included in the scope of protection of the present utility model.

Claims (4)

1. differ from the servo-actuated building mortion of slab cover half action roller, it is characterized in that: comprise patrix (1), fixedly counterdie (5), forming rolls group (2), clasp mould mechanism (4) and forming rolls group motion;

Described fixedly counterdie (5) is fixedly installed, and described patrix (1) is connected with described clasp mould mechanism (4), and described patrix (1) is along the movable setting of Z-direction;

Described forming rolls group (2) is symmetrically arranged in described patrix (1) and the fixing both sides of counterdie (5), described forming rolls group (2) is by the forming rolls of multi-pass to forming, and the right shaping angle of described forming rolls successively increases progressively to final pass from the first passage; Each roll of described forming rolls group (2) is independent active rotation design, and by the adjustable independently driven by servomotor of rotating speed; Described forming rolls group (2) is equipped with the flexible self-reacting device of spring or constant-pressure hydraulic cylinder in the Y direction;

Described forming rolls group motion comprises X-direction motion and Y-direction motion; Described forming rolls group (2) is connected with described forming rolls group motion; Described forming rolls group (2) is SERVO CONTROL with the motion of Y-direction on directions X;

Described forming rolls in described forming rolls group (2) between passage spacing be fixed value; The described forming rolls of each passage between roll shop building apart from independent adjustable setting;

Wherein, described in the be formed feedstock direction of part be X-direction, in processing plane, the direction vertical with X-direction is Y-direction; Direction perpendicular to described processing plane is Z-direction.

2. the servo-actuated building mortion of poor slab cover half action roller according to claim 1, is characterized in that: described clasp mould mechanism (4) comprises at least two synchronous hydraulic cylinders; The power source that described two synchronous hydraulic cylinders move along Z-direction as described patrix (1).

3. the servo-actuated building mortion of poor slab cover half action roller according to claim 1, it is characterized in that: described forming rolls group (2) is by the forming rolls of five passages to forming, and the right shaping angle of described forming rolls is followed successively by 10 °, 30 °, 50 °, 70 ° and 90 ° from the first passage to final pass.

4. the servo-actuated building mortion of poor slab cover half action roller according to claim 1, is characterized in that: spring or the constant-pressure hydraulic cylinder of described flexible self-reacting device for being equipped with in the Y direction.