CN2188474Y

CN2188474Y - Hydraulic amplifier for presser

Info

Publication number: CN2188474Y
Application number: CN 94201069
Authority: CN
Inventors: 李良光; 陈榕; 陈松铨
Original assignee: HAIYUAN STONE MATERIAL MACHINERY CO Ltd FUZHOU CITY
Current assignee: HAIYUAN STONE MATERIAL MACHINERY CO Ltd FUZHOU CITY
Priority date: 1994-01-08
Filing date: 1994-01-08
Publication date: 1995-02-01
Anticipated expiration: 2004-01-08

Abstract

The utility model discloses a hydraulic amplify device for press, relating to the device that the reciprocal motion of the press head and the pressure applying degree are controlled by a hydraulic transmission press. In particular to the press head and speed controlling device. The utility model is composed of a master cylinder body (11), a master cylinder piston (2), a movable cross beam (3), and an upper die (4). The utility model is characterized in that the upper part of the master cylinder body (11) is connected with the pressurizing cylinder body (51), the master cylinder (1) is provided with a C cavity (23) and the C cavity (23) is connected with the piston (6) of the pressurizing cylinder, and a pressure charging oil box (7) is connected with a low pressure oil opening (72) and is connected with a charging and discharging valve (9) by the opening (71) of the charging and discharging valve. A pressure oil system (8) is connected with an E cavity (21) in the master cylinder (1), and is connected with an A cavity (53), a B cavity (54), and an F cavity (61) in the pressurizing cylinder (5). The pressurizing cylinder body (51) presents an M shape. The oil plug (6) of the pressurizing cylinder is formed by start shapes. The pressing force and the reciprocating speed of the press are improved, and the technological requirement of the press is satisfied.

Description

Hydraulic amplifier for presser

The utility model relates to the device of the hydraulic drive forcing press control pressure head reciprocating motion and the degree of exerting pressure, and especially belongs to the device to press ram and speed control.

Forcing press hydraulic amplifier in the background technology or have only the function of supercharging, or has only the function of booster and speed-increasing and the device that do not have three kinds of functions to be integrated in one, though there are three kinds of functions to be integrated in one abroad, but the topping up part fuses with the big piston of pressurized cylinder fast, cause a technology difficult problem, and complex structure, maintenance difficult.

The purpose of this utility model is: by the hydraulic pressure amplifying device is set on the forcing press master cylinder, make the press power of forcing press, work reciprocating speed be improved, to satisfy the technological requirement of forcing press.

Technical solution adopted in the utility model is: it is by master cylinder body 11, and master cylinder piston 2 and moved cross beam 3, patrix 4 are formed, and its improvements are: master cylinder body 11 tops link to each other with pressurized cylinder cylinder body 51; Having C chamber 23 on the master cylinder 1 links to each other with pressurized cylinder piston 6; Pressurized reservoir 7 and low pressure hydraulic fluid port 72 and by filling valve mouth 71 and filling valve 9 and link to each other; A chamber 53, B chamber 54, F chamber 61 in E chamber 21 in pressure oil system 8 and the master cylinder 1, the pressurized cylinder 5 link to each other; And pressurized cylinder cylinder body 51 is Shape, pressurized cylinder piston 6 is

Shape is formed.

Advantage of the present utility model is: the top that common prefill valve or hydraulic control one-way valve is installed in pressurized cylinder, promptly fill the discharge opeing part and partly be separated structure with supercharging, speedup, solved and to have guaranteed the sealing that the major diameter poppet spool valve contacts with valve seat, guarantee that again itself and pressurized cylinder keep the technology difficult problem of very high concentricity, and make the amplifying device compact conformation, dependable performance, easy to maintenance.

Be specific embodiment of the utility model below

Fig. 1 is a hydraulic pressure amplifying device schematic diagram

Wherein 6 pressurized cylinder piston 61F chambeies, 55G chamber, 54B chamber, 24 low pressure oilholes, 3 moved cross beam 4 patrixes, 5 pressurized cylinder 51 pressurized cylinder cylinder bodies, 52 speedup cylinder piston 53A chamber, 23C chamber, 22D chamber, 1 master cylinder 11 master cylinder bodies, 2 master cylinder piston 21E chamber, 7 pressurized reservoirs 71 fill valve mouth 72 low pressure hydraulic fluid ports 8 pressure oil systems 81E chambeies and import and export the 82F chamber and import and export 83 and fill valve hydraulic control mouth 84A chamber and import and export the 85B chamber and import and export 9 and fill valve

Forcing press patrix 4 is to be linked to each other by master cylinder body 11, master cylinder piston 2 and moved cross beam 3, patrix 4 as shown in Figure 1, and master cylinder body 11 tops are linked to each other with pressurized cylinder cylinder body 51; The cross sectional shape of pressurized cylinder cylinder body 51 is

Shape, the cross sectional shape of pressurized cylinder piston 6 is Form; Pressurized cylinder piston 6 is connected with master cylinder body 11 tops, and on master cylinder body 11, constitute C chamber 23, pressurized cylinder cylinder body 5 links to each other with pressurized cylinder piston 6 and has constituted B chamber 54 and the middle part of pressurized cylinder cylinder body 51 is a speedup cylinder piston 52, and speedup cylinder piston 52 and pressurized cylinder piston 6 have connected and composed A chamber 51 and F chamber 61; They by the A chamber import and export 84, the B chamber imports and exports 85, the F chamber is imported and exported 82 and linked to each other with pressure oil system 8; Pressure oil system 8 also by the E chamber import and export 81, fill valve hydraulic control mouth 83 with E chamber 21, fill valve 9 and link to each other; And pressurized reservoir 7 links to each other with C chamber 23 by low pressure hydraulic fluid port 72 and low pressure oilhole 24; By filling valve mouth 71 and filling valve 9 and link to each other, fill valve 9 also by the B chamber import and export 85 link to each other with B chamber 54 form.Fill valve 9 in the utility model and be hydraulic control one-way valve.

Operation principle of the present utility model is: when pressurized cylinder 5 is in original position, open and oil extraction as long as the E chamber imports and exports 81 as shown in Figure 1, then master cylinder piston 2 and moved cross beam 3 thereof, patrix 4 rely on deadweight and descend fast under the effect of pressurized reservoir 7 oil pressure; When dropping to certain position, the E chamber is imported and exported 81 and is closed gradually, openings get smaller, then patrix 4 will transfer slow decline to by quick decline, C chamber 23 on the master cylinder 1, D chamber 22 replenish fluid by low pressure oilhole 24, low pressure hydraulic fluid port 72 from pressurized reservoir 7 at this moment, so pressurized cylinder 5 plays quick topping up effect.

Import and export 84, make pressure oil enter A chamber 53 by opening the A chamber, then pressurized cylinder piston 6 moves down fast, at this moment the B chamber 54 of pressurized cylinder 5 forms vacuum, pressure oil in the pressurized reservoir 7 enters 54 fluid infusion of B chamber by filling valve mouth 71 from filling valve 9, guaranteed that pressurized cylinder piston 6 is descending fast, therefore had the speed enlarging function.

All envelope is close when pressurized cylinder piston 6 moves downward a low pressure oilhole 24, pressure oil in the pressure oil system 8 is imported and exported 85 and is entered B chamber 54 from the B chamber at this moment, import and export 84 from the A chamber and enter A chamber 53, driving pressurized cylinder piston 6 continues descending, oil pressure in C chamber 23, the D chamber 22 is risen, and surpass system pressure, so enlarging function with power.

When needs recover the initial duty of forcing press, pressure oil system 8 imports and exports 81 by the E chamber, the F chamber imports and exports 82, simultaneously to E chamber 21, F chamber 61 fuel feeding, and open and fill valve 9 by filling valve hydraulic control mouth 83, make B chamber 54 fluid enter pressurized reservoir 7 through filling valve 9, this moment pressurized cylinder piston 6 fast rise, opened low pressure oilhole 24, made C chamber 23, the fluid in D chamber 22 through low pressure oilhole 24, low pressure hydraulic fluid port 72 rows to pressurized reservoir 7, then master cylinder piston 2 drives moved cross beam 3, patrix 4 fast rise, has promptly finished entire work process.

Claims

1, forcing press hydraulic pressure amplifying device, it is by master cylinder body (11), master cylinder piston (2) and moved cross beam (3), patrix (4) is formed, and it is characterized in that: master cylinder body (11) top links to each other with pressurized cylinder cylinder body (51); Having C chamber (23) on the master cylinder (1) links to each other with pressurized cylinder piston (6); Pressurized reservoir (7) and low pressure hydraulic fluid port (72) and by filling valve mouth (71) and filling valve (9) and link to each other; Pressure oil system (8) links to each other with the interior E chamber (21) of master cylinder (1), the A chamber (53) in the pressurized cylinder (5), B chamber (54), F chamber (61), and pressurized cylinder cylinder body (51) is

Shape, pressurized cylinder piston (6) is

Shape is formed.

2, device according to claim 1 is characterized in that: the C chamber (23) on the master cylinder (1) by low pressure oilhole (24) link to each other with low pressure hydraulic fluid port (72) form.

3, device according to claim 1 is characterized in that: filling valve (9) is hydraulic control one-way valve.