CN101653796A - New type bending and rolling compound machine tool with pre-bending mould - Google Patents

Abstract

The invention discloses a new type of bending and coiling composite machine tool with its own pre-bending mold, which comprises a machine base, a pair of lower rollers and an upper roller placed on the machine base, and the machine base includes an overturned side support, a mold Support, fixed side support, balance weight support, the upper roller is placed on the overturned side support, and the upper roller is fixed on the fixed side support. The roll is turned over to the bracket and supported by the fixed side bracket of the upper roll. A mold is placed on the mold support, and the mold is located in the middle of a pair of lower rolls. Below the lower roll is a lower roll cylinder fixed on the base of the machine tool. , the upper roller fixed side bracket is equipped with an upper roller oil cylinder, and the upper roller fixed side bracket is equipped with a hydraulic motor outside. The novel press-bending and coiling composite machine tool has short pre-bending time, increased pre-bending width, fewer production procedures and low production cost for processing sheet metal.

Description

A new type of bending and coiling compound machine tool with its own pre-bending die

technical field

The invention belongs to the technical field of plate rolling machines, and relates to a novel three-roll plate rolling machine compound machine tool with a pre-bending mold for rolling steel plates.

Background technique

With the rapid development of the plate rolling machine manufacturing industry, plate rolling machines in various fields have also appeared one after another. From the number of rolls, it can be divided into three-roll plate rolling machine and four-roll plate rolling machine; from the transmission, it can be divided into mechanical type and hydraulic type.

The plate rolling machine that can be pre-bent before rolling the plate is mainly the four-roll plate rolling machine, but in the process of pre-bending the steel plate, the four-roll plate rolling machine lacks the surrounding area due to the two ends of the steel plate forming the seam. Restricted by the metal structure, it is in a free state. When a pair of rollers of the plate rolling machine curl and form it, the amount of springback is very large. If it is simply formed by curling, to achieve the required size, the plate rolling machine needs to roll repeatedly. , Even more than ten times, the production efficiency is low, the production cost is increased, and the market competitiveness is low.

At present, there is also a method of using a hydraulic three-roll plate bending machine and a special metal forming hydraulic press to solve the problem of steel plate pre-bending. However, the use of two equipment not only increases the equipment cost, but also increases the auxiliary time for loading and unloading. There is a disadvantage that there is a limit to the width of the sheet. If the sheet to be rolled is very wide, the sheet needs to be cut before rolling and spliced after rolling. This method has many production processes, low production efficiency, and product quality cannot be guaranteed.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art, and to provide a new type of bending and rolling compound machine tool with a pre-bending mold that integrates pre-bending and rolling. The pre-bending time is short, the pre-bending width is increased, the production process is less, and the production cost is low.

The technical solution of the present invention is: a new type of bending and rolling compound machine tool with its own pre-bending mold, including a machine base, a pair of lower rollers placed on the machine base, and an upper roller placed above the pair of lower rollers , it is characterized in that: the machine tool base includes an overturned side support, a mold support, a fixed side support, and a balance weight support, and an upper roller is placed on the overturned side support, and the fixed side There is an upper roller fixed side bracket on the support, and the upper roller is supported by the upper roller turning bracket and the upper roller fixed side bracket. The mold support is equipped with a mold, and the mold is located between a pair of lower rollers. In the middle, a lower roller oil cylinder fixed on the machine base is installed under the lower roller, an upper roller oil cylinder is arranged on the fixed side bracket of the upper roller, and a hydraulic motor is arranged outside the fixed side bracket of the upper roller.

A balance weight support rod is placed outside the fixed side support, and the balance weight support rod supports the balance weight placed on the stretching section of the upper roller. Flip over to the stand to connect.

The mold is located at a symmetrical position in the middle of a pair of lower rollers.

The mold is a concave mold.

Compared with the prior art, the present invention has the following advantages:

1. The upper roll of the bending and rolling compound machine tool has the function of moving up and down. When the plate is pre-bent, the hydraulic energy is converted into mechanical energy, and a certain power is provided for the upper roll, which is convenient for the plate to be rolled into shape.

2. There is a mold in the middle of the pair of lower rollers of the bending and rolling compound machine tool, which can perform one-time pre-bending of both ends of the steel plate, which overcomes the shortcomings of ordinary plate rolling machines that need to be rolled many times, and greatly improves the work efficiency. efficiency.

3. The two lower rollers adopt hydraulic transmission and can move up and down at a certain angle. There are oil cylinders connected in parallel at both ends of each roller, so the lower roller can be adjusted to a horizontal position or an inclined position, and the oil cylinders at both ends of the lower roller The force can also be adjusted separately, so that the sheet can be rolled into cylinders, cones, etc. of different shapes.

4. The upper roller can be turned over to the bracket through the oil cylinder of the inverted head body, and at the same time, the upper roller can be lifted under the action of the balance weight, so as to facilitate loading and unloading.

Description of drawings

Fig. 1 is a structural schematic diagram of a new type of bending and coiling compound machine tool with its own pre-bending die in the present invention.

In Figure 1:

1. Machine base; 2. Lower roller; 3. Upper roller; 11. Overturned side support; 12. Mold support; 13. Fixed side support; 14. Balance block support; 111. Upper roller turned over to the bracket ; 131, upper roller fixed side support; 112, inverted body oil cylinder; 4, mold; 21 lower roller oil cylinder; 31, upper roller oil cylinder; 51, balance weight support rod; 52, balance weight; 6, hydraulic motor.

Detailed ways

As shown in Figure 1, a new type of bending and coiling composite machine tool with a pre-bending mold includes a machine base 1, a pair of lower rollers 2 placed on the machine base 1, and a pair of lower rollers 2 placed above There is an upper roller 3, and it is characterized in that: the machine base 1 includes an overturned side support 11, a mold support 12, a fixed side support 13, and a balance weight support 14, and the overturned side support 11 is provided with The upper roller turns over to the bracket 111, and the fixed side support 13 is provided with an upper roller fixed side bracket 131, and the upper roller 3 is supported by the upper roller turned over bracket 111 and the upper roller fixed side bracket 131, and the mold A mold 4 is placed on the support 12, and the mold 4 is located in the middle of a pair of lower rollers 2. A lower roller oil cylinder 21 fixed on the machine bed 1 is placed under the lower roller 2, and the upper roller is fixed on the side bracket. 131 is equipped with an upper roller oil cylinder 31, and a hydraulic motor 6 is arranged outside the fixed side support 131 of the upper roller.

The outside of the fixed side support 13 is equipped with a balance weight support rod 51, which supports the balance weight 52 placed on the extension section of the upper roller 3, and the outside of the overturned side support 11 is equipped with an inverted oil cylinder. 112 and is connected with the support 111 when the upper roller is turned over.

The mold 4 is located at a symmetrical position in the middle of a pair of lower rollers 2; the mold 4 is a concave mold.

The operating process of the present invention is as follows:

After starting the switch button, operate the lower roller oil cylinder 21 on the feeding side to drive the lower roller 2 to rise, so that the surface of the lower roller 2 is on the same level as the mold 4, and then operate the lower roller oil cylinder 21 on the other side to drive the lower roller 2 to rise to approximately The position is higher than the mold 4, and then the steel plate is fed horizontally, so that the end of the steel plate is in contact with the lower roller 2 on the feeding side, aligned and placed on the mold 3, and then the two lower rollers 2 are lowered to the original position, and the upper roller cylinder 31 is activated Drive the upper roller 3 to move downward to pre-bend the end of the steel plate; move the other end of the steel plate above the mold 4, and perform pre-bending on the other end according to the above process. After the pre-bending is completed, start the upper roller oil cylinder 31 to drive the upper roller 3 upward Move to the specified position.

Start the lower roller oil cylinder 21 to drive the lower roller 2 to move upwards (the pressure at both ends of the lower roller remains the same), start the hydraulic motor 6 to drive the upper roller 3 to rotate, and the two lower rollers 2 are opposite to the upper roller 3 through the friction between the steel plate and the lower roller 2 On the one hand, it drives the steel plate to be fed smoothly, on the other hand, the force generated by the oil cylinder is used to roll the steel plate, and the rolling is repeated until it reaches the predetermined shape.

After the steel plate rolling is completed, the workpiece is lowered to a certain position together with the two lower rollers 2, and the upper roller cylinder 31 is activated to move the upper roller 3 upward to the position of the balance weight 52, and then the tip cylinder 112 is activated to turn the upper roller overturning the bracket 111 , lift the workpiece and move out parallel to the upper roller.

The upper roll 3 of the bending and rolling compound machine tool performs vertical lifting movement at the central symmetrical position of a pair of lower rolls 2. At the same time, the hydraulic motor 6 drives the upper roll 3 to rotate to provide torque for the rolled plate. The plastic metal plate first passes through the upper roll 3 Pre-bend both ends with the mold 4 on the base, and then through the downward pressure and rotational movement of the upper roller 3, the metal plate will undergo continuous bending for multiple passes, resulting in permanent plastic deformation, and rolled into the required cylinder , cone.

The up and down movement of the upper roller 3 is mainly controlled by the upper roller oil cylinder 31 fixedly connected to the upper roller fixed side support 131 . During the rolling and forming process of the plate, the upper roll 3 is used as the driving roll, and the torque is provided by the hydraulic motor 6 to make the steel plate feed smoothly, ensuring the smooth feeding of the steel plate; at the same time, the upper roll 3 makes the upper roll 3 Realize up and down movement.

During the plate rolling process, a pair of lower rollers 2, on the one hand, serve as driven rollers and upper rollers 3 to provide torque at the same time to ensure the smooth feeding of the steel plate; on the other hand, the lower rollers 2 can move up and down along a certain angle, and can also realize the Roller 2 is adjusted to a horizontal position or an inclined position, so that the sheet can be rolled into cylinders, cones, etc. of different shapes.

Claims (4)

1, a kind of novel press-bending rolling compound machine tool that carries pre-bend mould, comprise lathe base, place a pair of lower roll on the lathe base, the top of described a pair of lower roll is equipped with top roll, it is characterized in that: described lathe base comprises overturning side bearing, die supports and mold, the fixation side bearing, the balance weight bearing, be equipped with top roll on the described overturning side bearing and translate into support, be equipped with top roll fixation side support on the described fixation side bearing, described top roll is translated into support and top roll fixation side stent support by described top roll, be equipped with mould on the described die supports and mold, described mould is positioned at the centre of a pair of lower roll, described lower roll below is equipped with the following roller oil cylinder that is installed on the lathe base, be equipped with roller oil cylinder on the described top roll fixation side support, the described top roll fixation side support outside is equipped with hydraulic motor.

2, the novel press-bending rolling compound machine tool that carries pre-bend mould according to claim 1, it is characterized in that: the described fixation side bearing outside is equipped with the balance weight support bar, the balance weight they sup-port places top roll along the balance weight on the section of stretching, and the described overturning side bearing outside is equipped with to touch the pillow the body oil cylinder and translate into support with described top roll and is connected.

3, the novel press-bending rolling compound machine tool that carries pre-bend mould according to claim 1, it is characterized in that: described mould is positioned at the middle symmetric position of a pair of lower roll.

4, the novel press-bending rolling compound machine tool that carries pre-bend mould according to claim 1, it is characterized in that: described mould is the matrix mould.

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