CN103978724A - Die-filling height adjusting device for modularized pressing machine - Google Patents

Abstract

The invention discloses a modulating height adjustment device for a modular press. The screw of the nut screw adjustment mechanism is threadedly connected with the nut. The screw is provided with a driving sprocket. The adjustment mechanism is set between the connecting plate under the workbench and the installation base plate, the hydraulic cylinder barrel of the nut screw adjustment mechanism is fixedly connected with the middle support plate, the hydraulic motor is set on the connecting plate under the workbench, the angled sprocket and the tension chain The sprocket of the hydraulic motor is at the same height as the other sprockets. The angled sprocket, the tensioning sprocket, the motor sprocket of the hydraulic motor and the sprocket on the screw are connected by a chain, and connected under the workbench. The upper end surface of the plate is provided with a workbench; the present invention is separated from the slider, which reduces the weight of the slider, and realizes the adjustment of the height of the mold by adjusting the height of the workbench, and the device is independently installed on the base, which is convenient for debugging, installation, use and maintenance , and is applicable to any structural press.

Description

Die height adjustment device for modular presses

technical field

The invention belongs to the technical field of presses, in particular to a device for adjusting the mounting height of modular presses.

Background technique

In the existing technology, there are three main ways to adjust the die height of the press. One is that the adjustment mechanism is placed in the slider, and the worm gear is used to drive the ball screw to move, and the distance between the slider and the crankshaft is slightly adjusted to achieve the adjustment. Die height purposes. This solution causes the mass of the adjusting device to be completely placed on the moving parts. With the increase of the speed of the press, the inertial force of the moving parts becomes larger, the vibration is difficult to control, and seriously affects the dynamic accuracy of the press, which will increase the speed of the press. bring great constraints. In addition, the ball head of the ball screw is difficult to process, and the machining accuracy is difficult to guarantee. After the ball head is worn, it has a great impact on the dynamic accuracy of the machine tool, and the later maintainability is poor; the second is to adjust the mold by adjusting the height of the fuselage. The height reduces the rigidity of the fuselage, and the structure installation and maintenance are more difficult. The third is to place the adjustment mechanism on the base, and adjust the lower mold to meet the requirements of mold height adjustment. This scheme can reduce the weight of moving parts and reduce its motion inertia force. There have been such mechanisms at home and abroad. The disclosed invention patent United States, 5398601, but the structural workbench and the weight of the lower mold all act on the drive nut. The radial end face of the nut needs to seal the pressure oil and rotate, so there is a risk of poor sealing and oil leakage. The screw guide is short, and the cantilever is long when the lifting amount of the screw is too large, and the screw is unstable, which affects its adjustment accuracy. In addition, the patent does not provide a specific layout plan. The sprocket is installed on the nut to increase the outer diameter of the sprocket and reduce the discharge space at the lower part of the workbench, which is inconvenient for actual use.

Contents of the invention

The purpose of the present invention is to provide a device that can separate the entire mechanism from the slider, reduce the weight of the slider, and realize the adjustment of the height of the mold by adjusting the height of the workbench. The entire device is independently installed on the base. , debugging, installation, use and maintenance are convenient, and it is a modular press mold height adjustment device suitable for any structural press.

The technical solution that realizes the object of the present invention is:

A modular press mold loading height adjustment device, including a mounting base plate, a nut screw adjustment mechanism, a hydraulic motor, a tensioning sprocket, a connecting plate under a workbench, a workbench, an intermediate support plate and an angled sprocket; wherein, the nut The screw adjustment mechanism includes sprocket, screw, nut, lower end cover sealing ring, hydraulic cylinder upper end cover, hydraulic cylinder lower end cover, hydraulic cylinder cylinder, upper end cover sealing ring, piston sealing ring and screw mounting seat; the screw of the nut screw adjustment mechanism It is threadedly connected with the nut, the screw rod is provided with a driving sprocket, the nut and the cylinder of the hydraulic cylinder form a hydraulic cylinder, and the circumferential surface of the nut is provided with an annular protrusion, which matches the annular groove in the cylinder of the hydraulic cylinder , and can move in the axial direction of the hydraulic cylinder barrel in the annular groove, the nut and the hydraulic cylinder barrel are sealed by the upper end cover of the hydraulic cylinder, the lower end cover of the hydraulic cylinder, the sealing ring of the lower end cover and the sealing ring of the upper end cover, and the upper end of the hydraulic cylinder The cover and the lower end cover of the hydraulic cylinder cooperate with the nut guide; four sets of nut screw adjustment mechanisms are arranged between the lower connection plate of the workbench and the installation base plate, wherein the nuts of the nut screw adjustment mechanism are fixedly connected with the lower connection plate of the workbench, and the nut screw adjustment mechanism The screw is set on the installation bottom plate through the screw mounting seat, and the screw and the screw mounting seat are rotated and matched; the middle support plate is set between the connecting plate under the workbench and the installation bottom plate, the middle support plate and the installation bottom plate are fixedly connected, and the hydraulic pressure of the nut screw adjustment mechanism The cylinder barrel is fixedly connected with the middle support plate, the hydraulic motor is set on the connecting plate under the workbench, the angled sprocket and the tensioning sprocket are set on the installation bottom plate, the motor sprocket of the hydraulic motor is at the same height as other sprockets, including The angle sprocket, the tensioning sprocket, the motor sprocket of the hydraulic motor and the sprocket on the screw rod are connected by a chain, and a worktable is arranged on the upper end surface of the connecting plate under the workbench.

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

(1) The present invention is independent from the moving parts of the press, reduces the inertial force and vibration of the press during operation, and provides favorable conditions for high-speed presses.

(2) The whole device of the present invention is independently installed on the base, which is convenient for debugging, installation, use and maintenance.

(3) The present invention adopts the structure of a two-way hydraulic cylinder. On the one hand, it can offset the weight of the workbench and the lower mold during the adjustment process, reduce the driving force required for adjustment, and facilitate adjustment; on the other hand, the hydraulic cylinder during the press process can eliminate The gap between the screw nut and the lock nut make the position of the table stable when it is subjected to impact loads.

(4) The end cap of the present invention has a guiding function and can ensure the stability of the adjustment process.

(5) The sprocket wheel of the present invention is connected on the rotating screw rod, and the outer diameter of the sprocket wheel is small, leaving enough discharge space, and easy to use.

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a structural schematic diagram of a mold loading height adjustment device for a modular press of the present invention.

Fig. 2 is a perspective view of the die height adjustment device for the modularized press of the present invention.

Fig. 3 is a cross-sectional view of the device for adjusting the mold loading height of the modularized press of the present invention.

Detailed ways

The present invention is a mold loading height adjustment device for a modular press, comprising a mounting base plate 1, a nut screw adjustment mechanism 2, a hydraulic motor 3, a tensioning sprocket 4, a connecting plate 5 under a workbench, a workbench 6, and an intermediate support plate 7 And wrap angle sprocket 8; Wherein, nut screw adjustment mechanism 2 comprises sprocket 2-1, screw rod 2-2, nut 2-3, lower end cover sealing ring 2-4, hydraulic cylinder upper end cover 2-5, hydraulic cylinder lower end Cover 2-6, hydraulic cylinder barrel 2-7, upper end cover seal ring 2-8, piston seal ring 2-9 and screw mounting seat 2-10; screw rod 2-2 and nut 2-3 of nut screw adjustment mechanism 2 The thread fit connection, the screw rod 2-2 is provided with a driving sprocket, the nut 2-3 and the hydraulic cylinder barrel 2-7 form a hydraulic cylinder, the circumferential surface of the nut 2-3 is provided with an annular protrusion, and the annular protrusion is connected with the hydraulic cylinder. The annular groove in the cylinder barrel 2-7 matches, and can move along the axial direction of the hydraulic cylinder barrel 2-7 in the annular groove, and the nut 2-3 and the hydraulic cylinder barrel 2-7 pass through the upper end of the hydraulic cylinder The cover 2-5 and the lower end cover 2-6 of the hydraulic cylinder and the sealing ring 2-4 of the lower end cover and the sealing ring 2-8 of the upper end cover are sealed, and the upper end cover 2-5 of the hydraulic cylinder and the lower end cover 2-6 of the hydraulic cylinder are connected with the nut 2- 3 guide fit; four sets of nut screw adjustment mechanisms 2 are set between the lower connection plate 5 of the workbench and the installation base 1, wherein the nuts 2-3 of the nut screw adjustment mechanism 2 are fixedly connected with the lower connection plate 5 of the workbench, and the nut screw adjustment The screw rod 2-2 of the mechanism 2 is arranged on the installation base plate 1 through the screw rod mounting seat 2-10, and the screw rod 2-2 and the screw rod mounting base 2-10 are rotated and matched; the middle support plate 7 is arranged on the connecting plate 5 and the installation base plate 1 under the workbench Between them, the middle support plate 7 is fixedly connected to the installation base plate 1, the hydraulic cylinder barrel 2-7 of the nut screw adjustment mechanism 2 is fixedly connected to the middle support plate 7, and the hydraulic motor 3 is arranged on the lower connecting plate 5 of the workbench, wrapping angle Sprocket 8 and tensioning sprocket 4 are arranged on installation base plate 1, and the motor sprocket of hydraulic motor 3 is at the same height as other sprockets. The sprocket on the screw rod 2-2 is connected by a chain, and the upper end surface of the connecting plate 5 under the workbench is provided with a workbench 6.

The connecting plate 5 under the workbench is connected with the nut 2-3 by the screw passing through the waist-shaped hole on the connecting plate 5 under the workbench.

Both the hydraulic motor 3 and the hydraulic cylinder barrel 2-7 are connected with the middle support plate 7 by screws.

A sealing ring is arranged between the annular protrusion on the circumferential surface of the nut 2-3 and the inner annular groove of the hydraulic cylinder barrel 2-7.

Because the horizontal positions of the four nuts 2-3 need to be rotated and debugged before the connecting plate 5 under the workbench is installed, the screws of the fixed nuts 2-3 rotate with the rotation of the nut 2-3, so the connecting plate 5 under the workbench The screw holes on the top need to be waist-shaped holes.

After installing and debugging the device according to the above,

The nut 2-3 and the hydraulic cylinder barrel 2-7 form a hydraulic cylinder. The annular protrusion on the circumferential surface of the nut 2-3 forms an upper cavity with the upper end cover 2-5 of the hydraulic cylinder, and the lower end cover 2-6 of the hydraulic cylinder forms a hydraulic cylinder. between the lower cavity,

When it is necessary to adjust the height of the mold, control the hydraulic control valve of the hydraulic cylinder to unload the pressure oil in the upper cavity of the hydraulic cylinder and fill the lower cavity with pressure oil. The load of the pressure machine oil is enough to offset most of the workbench 6 and the lower mold weight, but will not exceed its weight, so that the direction of the gap between the nut 2-3 and the screw rod 2-2 does not change. Start the hydraulic motor 3 then, and the hydraulic motor 3 drives the sprocket to rotate, so that the screw rod 2-2 rotates, and the nut 2-3 moves up and down to adjust the position of the workbench 6 up and down. After the adjustment is in place, the lower chamber of the hydraulic cylinder is unloaded, the upper chamber is filled with high-pressure oil, the screw 2-2 and the nut 2-3 are locked, and the screw 2-2 is tightly pressed on the installation base 1, during the stamping process The alternating load will not cause the movement of the table 6 position. During the adjustment process, the gap between the screw rod 2-2 and the nut 2-3 is always on one side of the gravity direction, and the adjustment is precise. To change.

Claims (4)

1. A modular press mold loading height adjustment device, characterized in that it includes an installation base plate (1), a nut screw adjustment mechanism (2), a hydraulic motor (3), a tensioning sprocket (4), and a workbench Connecting plate (5), workbench (6), intermediate support plate (7) and wrap angle chain wheel (8); Wherein, nut screw adjustment mechanism (2) comprises chain wheel (2-1), screw rod (2-2 ), nut (2-3), lower end cover sealing ring (2-4), hydraulic cylinder upper end cover (2-5), hydraulic cylinder lower end cover (2-6), hydraulic cylinder barrel (2-7), upper end Cover sealing ring (2-8), piston sealing ring (2-9) and screw mounting seat (2-10); the screw rod (2-2) and nut (2-3) of the nut screw adjustment mechanism (2) are screwed together connection, the screw rod (2-2) is provided with a driving sprocket, the nut (2-3) and the hydraulic cylinder barrel (2-7) form a hydraulic cylinder, and the circumferential surface of the nut (2-3) is provided with an annular protrusion , the annular protrusion matches the annular groove in the hydraulic cylinder barrel (2-7), and can move axially in the hydraulic cylinder barrel (2-7) in the annular groove, the nut (2-3) and hydraulic cylinder cylinder (2-7) through hydraulic cylinder upper end cover (2-5) and hydraulic cylinder lower end cover (2-6) and lower end cover sealing ring (2-4) and upper end cover sealing ring (2-8) seal, and the hydraulic cylinder upper end cover (2-5) and the hydraulic cylinder lower end cover (2-6) guide and cooperate with the nut (2-3); the four sets of nut screw adjustment mechanisms (2) are arranged on the connecting plate (5 ) and the installation base plate (1), wherein the nut (2-3) of the nut screw adjustment mechanism (2) is firmly connected with the connecting plate (5) under the workbench, and the screw (2-2) of the nut screw adjustment mechanism (2) ) is set on the installation base plate (1) through the screw mounting base (2-10), and the screw rod (2-2) is rotated and matched with the screw mounting base (2-10); the middle support plate (7) is set on the connecting plate under the workbench ( 5) Between the installation base plate (1), the intermediate support plate (7) is firmly connected to the installation base plate (1), and the hydraulic cylinder cylinder (2-7) of the nut screw adjustment mechanism (2) is connected to the intermediate support plate (7) Fixed connection, the hydraulic motor (3) is set on the connecting plate (5) under the workbench, the angled sprocket (8) and the tensioning sprocket (4) are set on the installation base plate (1), and the motor of the hydraulic motor (3) The sprocket is at the same height as other sprockets, and the sprocket on the motor sprocket of the wrapping sprocket (8), the tensioning sprocket (4), the hydraulic motor (3) and the screw rod (2-2) is connected by a chain, Workbench (6) is set on the upper end face of connecting plate (5) under workbench. 2. The modular press mold loading height adjustment device according to claim 1, characterized in that: the connecting plate (5) under the workbench and the nut (2-3) pass through the connecting plate under the workbench ( 5) The screw connection of the upper waist hole. 3. The modular press mold loading height adjustment device according to claim 1, characterized in that: the hydraulic motor (3) and the hydraulic cylinder (2-7) are connected to the middle support plate (7) by screws )connect. 4. The modular press mold loading height adjustment device according to claim 1, characterized in that: the annular protrusion on the circumferential surface of the nut (2-3) and the hydraulic cylinder cylinder (2-7) A sealing ring is arranged between the inner annular grooves.