CN213808614U - Hydraulic press buffer - Google Patents

Abstract

The utility model discloses a hydraulic press buffer device, which relates to the technical field of hydraulic press equipment and comprises an oil cylinder, wherein the top of the oil cylinder is provided with a sealing end cover, a piston rod is arranged in the cavity of the oil cylinder, the piston rod divides the cavity of the oil cylinder into a rod cavity and a rodless cavity, a movable piston seat is arranged in the rodless cavity, a movable piston is arranged in the movable piston seat, the bottom of the movable piston is connected to the bottom of the oil cylinder by a reset spring, the end part of the piston rod is provided with a cylindrical hole along the axis direction, a damping plug is arranged in the cylindrical hole, the piston rod vertically penetrates through the through hole on the cylindrical hole, and the through hole avoids a boss at the end part of the piston rod; the oil cylinder is divided into the rod cavity and the rodless cavity which are communicated with each other in series, and the movable piston and the reset spring are arranged in the rodless cavity, so that the oil cylinder does not need to be externally connected with an oil tank, the automatic compensation function can be completed, the occupied area of equipment is reduced because the oil cylinder does not need to be externally connected with oil tank equipment, and the production and maintenance cost is reduced.

Description

Hydraulic press buffer

Technical Field

The utility model mainly relates to a hydraulic press equipment technical field, especially a hydraulic press buffer.

Background

In the process of manufacturing the glass product, a forming die is required to be shaped, and a hydraulic press is often used for realizing the forming process. Hydraulic machines, also known as oil presses, are machines for transferring energy to carry out various processes, made according to the pascal principle, using a liquid as working medium. The hydraulic machine is generally composed of three parts, namely a machine body, a power system and a hydraulic control system. The hydraulic oil is conveyed to the integrated cartridge valve block by the oil pump, is distributed to the upper cavity or the lower cavity of the oil cylinder through the check valves and the overflow valves, and the oil cylinder moves under the action of high-pressure oil. The hydraulic machines are mainly classified into valve hydraulic machines, liquid hydraulic machines and engineering hydraulic machines, and are widely applied.

In the working process of the hydraulic press, the hydraulic cylinder moves back and forth repeatedly, when the piston rod reaches the stroke end, if the movement speed is high, the piston is easy to violently collide with the guide sleeve, so that very high impact and noise are generated, and the service life of equipment is shortened. Later, a hydraulic cylinder with a buffering function gradually appears, and the hydraulic cylinder can provide certain buffering when a piston rod reaches the bottom, so that severe impact is reduced.

The existing hydraulic cylinder with the buffering function is realized by arranging a return spring on a piston rod and connecting an oil tank outside an oil cylinder cavity. Along with piston rod reciprocating motion in the hydro-cylinder, cause to have pole chamber inner chamber volume constantly to change, when pole intracavity volume reduces, need to have the liquid drainage of pole intracavity to outside oil tank, when pole intracavity volume grow, need be to have the pole intracavity drainage to the oil tank. By the mode, the buffer function is slightly poor, the occupied area of equipment is increased due to the need of externally connecting oil tank equipment, and the production and maintenance cost is increased.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies and drawbacks existing in the prior art, the present invention aims to provide a hydraulic machine buffering device.

In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides a hydraulic press buffer, includes the hydro-cylinder, the hydro-cylinder top is equipped with end cover, be equipped with the piston rod in the hydro-cylinder cavity, the piston rod falls into the hydro-cylinder cavity and has pole chamber and no pole chamber, be equipped with movable piston seat in the no pole chamber, be equipped with movable piston in the movable piston seat, the movable piston bottom is connected in the bottom of hydro-cylinder with reset spring, and this movable piston can be reciprocating motion, and reset spring helps movable piston to reset, the cylinder hole is seted up along the axis direction to the tip of piston rod, is equipped with the damping stopper in this cylinder hole, has the damping hole on the damping stopper, can make fluid process, the piston rod runs through the through-hole perpendicularly on the cylinder hole, the through-hole avoid the tip boss of piston rod, have the damping hole on pole chamber through-hole, cylinder hole, damping stopper to link up with no pole chamber.

As a further improvement, the end part of the sealing end cover is provided with a sealing ring, and the sealing ring prevents oil from leaking to the outside.

As a further improvement, the oil cylinder and the sealing end cover are connected through bolts, and are convenient to disassemble and maintain.

Compared with the prior art, the utility model discloses the beneficial effect who has does: the oil cylinder is divided into the rod cavity and the rodless cavity which are communicated with each other in series, and the movable piston and the reset spring are arranged in the rodless cavity, so that the oil cylinder does not need to be externally connected with an oil tank, the automatic compensation function can be completed, the occupied area of equipment is reduced because the oil cylinder does not need to be externally connected with oil tank equipment, and the production and maintenance cost is reduced.

Drawings

The invention will be further described with reference to the accompanying drawings:

fig. 1 is a schematic structural view of a hydraulic machine cushioning device of the present invention;

in the figure: the hydraulic cylinder comprises an oil cylinder 1, a reset spring 2, a movable piston seat 3, a movable piston 4, a damping plug 5, a through hole 6, a cylindrical hole 7, an oil injection hole 8, a piston rod 9, a sealing ring 10, a sealing end cover 11, a rod cavity 12, a rod-free cavity 13 and a bolt 14.

Detailed Description

The present invention will be further explained with reference to fig. 1.

The utility model discloses a hydraulic press buffer, refer to fig. 1, a hydraulic press buffer, including hydro- cylinder 1, 1 top of hydro-cylinder is equipped with end-to-end cover 11, as preferred, 11 tip of end-to-end cover be equipped with sealing washer 10, sealing washer 10 prevents that fluid from revealing the outside, as preferred, hydro-cylinder 1 and end-to-end cover 11 pass through bolt 14 and connect, the convenient dismantlement is maintained. The oil cylinder is characterized in that a piston rod 9 is arranged in a cavity of the oil cylinder 1, the piston rod 9 divides the cavity of the oil cylinder 1 into a rod cavity 12 and a rodless cavity 13, a movable piston seat 3 is arranged in the rodless cavity 13, a movable piston 4 is arranged in the movable piston seat 3, the bottom of the movable piston 4 is connected to the bottom of the oil cylinder 1 through a reset spring 2, the movable piston 4 can do reciprocating motion, the reset spring 2 helps the movable piston 4 to reset, a cylindrical hole 7 is formed in the end portion of the piston rod 9 along the axis direction, a damping plug 5 is arranged in the cylindrical hole 7, a damping hole is formed in the damping plug 5, oil can pass through the damping hole, the piston rod vertically penetrates through a through hole 6 in the cylindrical hole 7, the through hole 6 avoids a boss at the end portion of the piston rod 9, and the rod cavity 12 is communicated with the rodless cavity 13 through the through holes 6, the cylindrical hole 7 and the damping plug 5.

The implementation principle of the hydraulic machine buffer device of the embodiment is as follows: before the hydraulic press work, through oil filler point 8 toward having pole chamber 12 injection fluid, later plug up oil filler point 8 with the oil plug, hydraulic press during operation, piston rod 9 is reciprocating motion, when piston rod 9 stretches out from hydro-cylinder 1 in, there is pole chamber 12 volume to diminish, in oil flowed into cylindric lock 7 through-hole 6, then get into no pole chamber 13 through the hole of damping stopper 5, and simultaneously, movable piston 4 moves forward under oil hydraulic pressure power reset spring 2's effect, the compensation has the volume that pole chamber 12 reduces because of piston rod 9 stretches out. When the piston rod 9 retracts into the oil cylinder 1, the volume of the rod cavity 12 is increased, oil in the rodless cavity 13 flows into the cylindrical hole 7 through the small hole of the damping plug 5 and finally enters the rod cavity 12 through the through hole 6, and meanwhile, the movable piston 4 moves backwards under the action of oil hydraulic pressure to compensate the increased volume of the rod cavity 12 due to the retraction of the piston rod 9.

Through dividing into the hydro-cylinder 1 and having pole chamber 12 and rodless chamber 13 that communicate with each other to set up movable piston 4 and reset spring 2 in rodless chamber 13, make hydro-cylinder 1 need not external oil tank, can accomplish the automatic compensation function, because do not need external oil tank equipment, reduced the area occupied of equipment, reduced production and maintenance cost.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only, not by way of limitation, since other embodiments will become apparent to those skilled in the art upon consideration of the following detailed description of the invention without any creative effort.

Claims (3)

1. The utility model provides a hydraulic press buffer which characterized in that: including hydro-cylinder (1), hydro-cylinder (1) top is equipped with end cover (11), be equipped with piston rod (9) in hydro-cylinder (1) cavity, piston rod (9) fall into hydro-cylinder (1) cavity and have pole chamber (12) and no pole chamber (13), be equipped with movable piston seat (3) in no pole chamber (13), be equipped with movable piston (4) in movable piston seat (3), reset spring (2) are connected in the bottom of hydro-cylinder (1) for movable piston (4) bottom, cylinder hole (7) are seted up along the axis direction to the tip of piston rod (9), are equipped with damping stopper (5) in this cylinder hole (7), the piston rod runs through-hole (6) on cylinder hole (7) perpendicularly, through-hole (6) avoid the tip boss of piston rod (9).

2. The hydraulic buffer apparatus of claim 1, wherein: and a sealing ring (10) is arranged at the end part of the sealing end cover (11).

3. The hydraulic buffer apparatus of claim 1, wherein: the oil cylinder (1) is connected with the sealing end cover (11) through a bolt (14).

Images