CN204339956U - The main-cylinder stroke displacement compensation device of hydraulic press - Google Patents

Abstract

The utility model discloses a stroke displacement compensation device of a main cylinder of a hydraulic brick press. It includes: an upper toothed plate, which is fixedly arranged at the lower end of the main piston of the main cylinder of the hydraulic brick press, and at least two upper teeth are arranged at an equal angle around the lower end surface; the lower toothed plate is driven by a rotary drive mechanism to The horizontal rotation mode is set on the upper end surface of the movable beam on the hydraulic brick press, and the upper end surface is provided with lower teeth corresponding to the upper teeth, and its rotation axis coincides with the central axis of the upper tooth plate; and A lifting mechanism is arranged on the frame of the hydraulic brick press and connected with the upper moving beam. The utility model is applied to hydraulic brick presses, especially refractory brick hydraulic brick presses and wall brick hydraulic brick presses, etc., which can effectively shorten the stroke of the main cylinder in the working process and reduce the time of entering the main cylinder. The amount of hydraulic oil is reduced, thereby reducing energy consumption and improving production efficiency.

Description

Stroke Displacement Compensation Device for Main Cylinder of Hydraulic Brick Press

technical field

The utility model belongs to the technical field of hydraulic brick presses, in particular to a master cylinder stroke displacement compensation device of a hydraulic brick press.

Background technique

As shown in Figure 1, the main part of the existing hydraulic brick press such as refractory brick hydraulic brick press is mainly provided with a liquid filling tank 2, a main cylinder 3, an upper moving beam 4, and a mold frame oil cylinder on an assembled frame 1. 5 and the lower moving beam 6, a liquid charging valve 21 is set in the oil circuit between the liquid filling tank 2 and the master cylinder 3, the upper moving beam 4 is fixedly connected to the lower end of the main piston 31 of the master cylinder 3, and the mold frame oil cylinder 5 and the lower moving Beam connection; the upper die head of the mold is installed on the lower end of the upper moving beam, and the mold frame of the mold is installed on the upper end of the lower moving beam. Its working principle is: when the brick press is pressing bricks, the liquid filling valve 21 is opened so that the hydraulic oil in the liquid filling tank 2 quickly enters the rodless chamber of the main cylinder 3 to drive the main piston 31 to quickly descend to drive the upper die head installed. The upper moving beam 4 quickly descends to complete the mold clamping action between the upper die head and the mold frame; during the pressing stage, the filling valve is in a closed state, and the system pressure oil enters the rodless chamber of the master cylinder through a special oil passage to complete the pressing action; the pressing is completed Finally, the filling valve is opened again and the rod chamber of the main cylinder enters the system pressure oil, so that the main piston rises rapidly to drive the upper moving beam installed with the upper die head to rise rapidly, and at the same time, the mold frame oil cylinder drives the lower moving beam to descend to complete the demoulding action. Like this, complete an action of pressing adobe.

Since the stroke of the refractory brick hydraulic brick press is generally large, when the main piston moves down, the rodless cavity of the main cylinder needs to be filled with a large amount of hydraulic oil; and in the pressing stage, because the hydraulic oil in the main cylinder is compressed, The hydraulic oil in the main cylinder has a large volume and high pressure, which will consume a large amount of useless energy, resulting in waste of energy and reducing the effective pressing times of the brick press. In addition, after the pressing is completed, a large amount of energy stored in the master cylinder needs to be released, and if it is processed, it will not produce large noise and impact.

Utility model content

The purpose of this utility model is to provide a main cylinder stroke displacement compensation device of a hydraulic brick press, which can effectively reduce the stroke of the main cylinder during work and solve the shortcomings of the prior art.

In order to achieve the above object, the utility model adopts the following technical solutions:

The stroke displacement compensation device of the main cylinder of the hydraulic brick press includes: an upper tooth plate, which is fixedly arranged at the lower end of the main piston of the main cylinder of the hydraulic brick press, and at least two upper teeth are arranged at an equal angle around the lower end surface; The tooth plate is driven by a rotary drive mechanism and is horizontally rotatable and arranged on the upper end surface of the moving beam on the hydraulic brick press. The upper end surface is surrounded by lower teeth corresponding to the upper teeth, and its rotation axis is in line with the upper teeth. The central axis of the upper toothed plate coincides; and a lifting mechanism is arranged on the frame of the hydraulic brick press and connected with the upper moving beam.

Preferably, the tooth tip surfaces of the upper tooth and the lower tooth are both plane.

Furthermore, an anti-rotation pin is provided between the main cylinder body and the main piston of the hydraulic brick press.

Preferably, the lifting mechanism is four lifting cylinders, the cylinder body of each lifting cylinder is fixed on the frame of the hydraulic brick press, and the piston rod end is connected with the four corners of the upper moving beam.

As another option, the lifting mechanism is two lifting cylinders, the cylinder body of each lifting cylinder is fixed on the frame of the hydraulic brick press, and the piston rod ends are connected with the symmetrical two sides of the upper moving beam.

The utility model is applied to hydraulic brick presses, especially hydraulic brick presses for refractory bricks and hydraulic brick presses for wall bricks, etc., which can effectively shorten the stroke of the main cylinder in the working process and reduce the The amount of hydraulic oil is reduced, thereby reducing energy consumption and improving production efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of the host part of an existing hydraulic brick press for refractory bricks.

Fig. 2 is a structural schematic diagram 1 of the utility model applied to the main machine of the refractory brick hydraulic brick press.

Fig. 3 is a structural schematic diagram II of the utility model applied to the main machine of the refractory brick hydraulic brick press.

In the picture:

1—frame; 2—liquid filling tank; 21—liquid filling valve; 3—main cylinder; 31—main piston; 4—upper beam; 5—mold frame oil cylinder; 6—lower beam; 71—upper tooth plate ; 711—upper tooth; 72—lower tooth plate; 721—lower tooth; 73—lifting mechanism; 74—anti-rotation pin.

Now in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Detailed ways

As shown in Figure 2 and Figure 3, the main cylinder stroke displacement compensation device of the hydraulic brick press described in the utility model mainly consists of an upper toothed disc 71, a lower toothed disc 72, and a lower toothed disc rotation drive mechanism (Fig. Not shown in), a lifting mechanism 73 and an anti-rotation pin 74 are formed. The upper tooth plate 71 is fastened to the lower end of the main cylinder main piston 31 of the hydraulic brick press, and several upper teeth 711 are provided at equal angles around the lower end surface. The lower toothed plate 72 is driven by a rotary drive mechanism and is horizontally rotatably arranged on the upper end surface of the movable beam 4 on the hydraulic brick press, and its rotation axis coincides with the central axis of the upper toothed plate; the rotary drive mechanism can be driven by a hydraulic cylinder components or servo motor drive components. A plurality of lower teeth 712 corresponding to the upper teeth 711 are provided on the upper end surface of the lower toothed disc 72 . The tooth top surfaces of the upper teeth and the lower teeth are both planes. Lifting mechanism 73 is made up of two (or four) lifting oil cylinders, and the cylinder body part of each lifting oil cylinder is fixed on the frame 1 of hydraulic brick press, and its piston rod end then is with the symmetrical both sides of upper moving beam 4 (or four corners) connection. The anti-rotation pin 74 is arranged between the main cylinder body and the main piston 31 of the hydraulic brick press machine, so as to prevent the main piston 31 from rotating relative to the main cylinder body.

The working process of the present utility model is as follows:

In the initial stage, as shown in Figure 1, the main piston 31 is at the upper stop position, and the upper moving beam 4 is also at the upper stop position through the lifting mechanism 73. At this time, the upper teeth of the upper toothed disc are located in the tooth gap of the lower toothed disc The lower teeth of the lower toothed disc are also located in the tooth gaps of the upper toothed disc. In the mold clamping stage, the upper moving beam 4 is first driven down by the lifting mechanism 73 (the stroke is slightly larger than the compensation stroke H, and H is the height of the lower tooth), and then as shown in Figure 3, the lower toothed plate is driven to rotate horizontally by a fixed angle through the rotary drive mechanism And ensure that the tooth top surface of the upper tooth is aligned with the tooth top surface of the lower tooth, and then drive the main piston to descend to lower the upper tooth plate, and the top tooth surface of the upper tooth plate of the upper tooth plate touches the tooth top surface of the lower tooth. Complete the mold closing action. In the pressing stage, inject pressure oil into the rodless chamber of the master cylinder to complete the pressing action. After the pressing action is completed, first drive the main piston to rise. When the rise slightly exceeds the compensation stroke H, the lower tooth plate is rotated horizontally by a fixed angle to ensure that the tooth gap between the upper tooth and the lower tooth is aligned, and then the lifting mechanism drives the upper moving beam. The driver rises and returns to the position of the initial stage. At this time, one working cycle is also completed.

Since only the upper beam is descending while the main piston does not descend during the mold clamping stage, there is no need to fill the master cylinder with hydraulic oil, so compared with the prior art, the hydraulic oil in the master cylinder is reduced during the pressing stage A lot (reducing the volume of the product of the cross-sectional area of the main cylinder and the compensation stroke H), thereby reducing the energy waste caused by the hydraulic oil being compressed during high-pressure pressing, thereby achieving the purpose of saving energy and improving production efficiency.

Claims (6)

1. the main-cylinder stroke displacement compensation device of hydraulic press, is characterized in that, comprising:

The angles such as fluted disc on, is fixedly installed on the master cylinder main piston lower end of hydraulic press, all sides, its lower surface are provided with at least two upper teeth;

One lower tooth disk, is driven by a rotary drive mechanism can horizontally rotate the upper moving beam upper surface that mode is arranged on hydraulic press, and all sides, its upper surface are provided with the lower tooth corresponding with described upper tooth, and rotation overlaps with the axis of described upper fluted disc; With an elevating mechanism, the frame being arranged on hydraulic press is connected with described upper moving beam.

2. the main-cylinder stroke displacement compensation device of hydraulic press according to claim 1, is characterized in that, the tooth top end face of described upper tooth and lower tooth is plane.

3. the main-cylinder stroke displacement compensation device of hydraulic press according to claim 1, is characterized in that, is provided with a stop pin between the master cylinder body of described hydraulic press and main piston.

4. the main-cylinder stroke displacement compensation device of hydraulic press according to claim 1, it is characterized in that, described elevating mechanism is four lift cylinders, and the cylinder part of each lift cylinder is fixed in the frame of hydraulic press, and its tailpiece of the piston rod is then connected with the position, four angles of upper moving beam.

5. the main-cylinder stroke displacement compensation device of hydraulic press according to claim 1, it is characterized in that, described elevating mechanism is two lift cylinders, and the cylinder part of each lift cylinder is fixed in the frame of hydraulic press, and its tailpiece of the piston rod is then connected with the symmetrical both sides of upper moving beam.

6. the main-cylinder stroke displacement compensation device of hydraulic press according to claim 1, is characterized in that, described rotary drive mechanism is hydraulic jack driven unit or driven by servomotor assembly.