CN210257376U - Direct-connected oil press with pressure cylinder - Google Patents
Direct-connected oil press with pressure cylinder Download PDFInfo
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- CN210257376U CN210257376U CN201920114020.XU CN201920114020U CN210257376U CN 210257376 U CN210257376 U CN 210257376U CN 201920114020 U CN201920114020 U CN 201920114020U CN 210257376 U CN210257376 U CN 210257376U
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Abstract
The utility model discloses a pressure cylinder direct-connected hydraulic press, wherein an upper beam of a host machine frame is provided with two main cylinders, the top of a cylinder body of each main cylinder is provided with a pressure cylinder, and a large piston with the bottom connected with a small piston is arranged in an inner cavity of the pressure cylinder; a side oil inlet is formed in the side wall of the lower cavity of the pressure cylinder, and an upper oil inlet is formed in the top of the upper cavity of the pressure cylinder; an oil outlet through hole is formed between the bottom of the pressure cylinder and the top of the main cylinder, the bottom end of a plunger rod of the main cylinder is connected with a movable sliding block, the movable sliding block is positioned in a frame formed by four upright posts, the working surface of the lower end of the movable sliding block is connected with the upper half part of the die, and the lower half part of the die is fixed on a working table surface through bolts. The end surface area ratio and the stroke of the middle and large pistons and the small piston of the utility model enable the pressure of the hydraulic oil in the rodless cavity of the main cylinder to be instantly increased to the design pressure, and the hot crushed material is pressed and formed at one time, thereby effectively reducing the power consumption of the equipment; the volume of the equipment is reduced, the weight is lightened, and the cost is reduced.
Description
Technical Field
The utility model relates to a forging and pressing equipment technical field, specific pressure cylinder directly links formula hydraulic press that says so.
Background
The current market recycling of waste steel is mainly remelting and re-smelting, the method has huge energy consumption, and the steel is smelted at the melting temperature of over 1000 ℃. The hot forming oil press is a processing device which is mainly used for carrying out deep processing on waste light and thin material powder generated in the machining industry and then recovering the use value of the waste light and thin material powder. Heating the mechanically crushed waste thin materials to 750 ℃ (if the steel-making return heating temperature is at least over 1000 ℃), pouring the waste thin materials into a special die, and pressing and molding the waste thin materials for multiple times by using a thermal molding oil press. The mechanical property of the product formed by pressing is close to that of gray cast iron, the manufacturing cost is reduced by 50 percent compared with that of the gray cast iron, the product is mainly used as counterweight in various elevator industries and ballast iron in ship industries, and the like, and along with the continuous growth of the market of the building industry and the navigation industry in China, the demand of the series of counterweight products is larger and larger, so that the domestic market is short of the supply of processing equipment for producing the counterweight products.
In order to increase pressure, the existing thermoforming oil press needs a large-size hydraulic cylinder, so that the size of a rack is large, and the occupied area is large; the material can be pressed and formed only by reciprocating the hydraulic cylinder for many times, and the energy consumption is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pressure cylinder directly links hydraulic press can be with the shaping of once exerting pressure of material, reduces the volume of hydraulic press frame, weight reduction, furthest's reduction self energy consumption.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a pressure cylinder direct-connection type oil press comprises a three-beam four-column type host machine frame, wherein the host machine frame comprises an upper cross beam, a lower cross beam and four upright posts connected between the upper cross beam and the lower cross beam, a working table is arranged above the lower cross beam, two mounting holes are formed in the middle of the upper cross beam, two plunger type main cylinders respectively penetrate through the mounting holes, and the bottoms of the cylinder bodies of the main cylinders are fixed on the lower surface of the upper cross beam through flanges; the top of the cylinder body of each main cylinder is provided with a piston type pressure cylinder, the bottom end of the cylinder body of the pressure cylinder is combined with the top end of the cylinder body of the main cylinder through a bolt, a second-order reducing cylinder is arranged in an inner cavity of the pressure cylinder, a large piston is arranged in an upper cavity, the diameter of the upper cavity is matched with that of the large piston, the bottom of the large piston is connected with a small piston, and the diameter of a lower cavity is matched with that of the small piston; a side oil inlet is arranged on the side wall of the rodless cavity of the main cylinder, and an upper oil inlet is arranged at the top of the upper cavity of the pressure cylinder; an oil outlet through hole is formed between the bottom of the pressure cylinder and the top of the main cylinder and is communicated with the lower cavity of the pressure cylinder and the rodless cavity of the main cylinder; the bottom end of a plunger rod of the main cylinder is connected with the upper surface of a cuboid-shaped movable sliding block through a flange, the movable sliding block is positioned in a frame formed by four stand columns, the working surface of the lower end of the movable sliding block is connected with the upper half part of a die, and the lower half part of the die is fixed on a working table surface through bolts.
Preferably, the lower part of the small piston is clamped in the lower cavity of the pressure cylinder, and a sealing strip is arranged on the side wall of the bottom end of the small piston.
Preferably, two side walls of the upper cross beam are respectively connected with a cylinder body of the return oil cylinder through bolts, and a piston end of the return oil cylinder is connected with a side wall of the movable sliding block through bolts.
Preferably, the area ratio of the diameter of the large piston to the area of the small piston is: 2-3:1.
Preferably, the bottom of the large piston is in threaded connection with the upper part of the small piston.
Preferably, the side wall of the bottom of the upper cavity of the pressure cylinder is provided with an exhaust hole.
Preferably, four side edges of the movable sliding block are adjacent to four upright posts respectively, and the upright posts form guide tracks of the movable sliding block.
Preferably, a plurality of T-shaped grooves are formed in the working surface of the lower end of the movable sliding block, T-shaped pull rods matched with the T-shaped grooves are arranged at the top of the upper half portion of the die, and the upper half portion of the die is inserted into the T-shaped grooves through the T-shaped pull rods.
The utility model discloses a theory of operation does:
(1) a fast descending stage: at the beginning of work, the oil inlet is started from the side oil inlet, hydraulic oil is injected into the rodless cavity of the main cylinder and the lower cavity of the pressure cylinder through the oil outlet through hole, the small piston and the large piston in the pressure cylinder and the plunger rod of the main cylinder are respectively pushed to the upper end and the lower end, under the action of the hydraulic oil, the plunger rod of the main cylinder drives the movable sliding block and the upper half part of the die to move downwards, and after the upper part and the lower part of the die are buckled, hot crushed materials placed in the die are pressed at normal pressure; in the descending process of the movable sliding block, piston rods of return oil cylinders on two sides simultaneously extend;
(2) and (3) a pressurization forming stage: when the plunger rod is blocked and does not move any more, the upper oil inlet at the top of the booster cylinder starts to feed oil, hydraulic oil extrudes the large piston and the small piston downwards at the same time, the pressure borne by the top of the small piston is far greater than the pressure borne by the bottom of the small piston due to the different diameters of the large piston and the small piston, the small piston transmits the pressure to the hydraulic oil below the small piston, the hydraulic oil in the lower cavity of the booster cylinder and the rodless cavity of the main cylinder is compressed, the pressure of the hydraulic oil is instantly increased to the designed working pressure, the plunger rod is pushed to continuously move downwards, and the movable sliding block continuously applies pressure;
(3) and (3) a return stage: after the material is molded, the pressure is released from the upper oil inlet, and the large piston and the small piston of the pressure cylinder return to the initial positions; and a piston rod of the return oil cylinder begins to retract, the movable sliding block and a piston rod of the main cylinder are lifted upwards to the initial position, and meanwhile, hydraulic oil in a rodless cavity of the main cylinder and an upper cavity of the pressure cylinder flows back to the hydraulic station.
The utility model has the advantages that:
(1) the utility model discloses set up the pressurized cylinder at the top of master cylinder, be provided with big piston and little piston in the pressurized cylinder inner chamber, the pressure of hydraulic oil in the no pole chamber of master cylinder has been decided to the terminal surface area ratio and the stroke of big piston and little piston, can make the pressure of hydraulic oil in the no pole chamber of master cylinder increase to design pressure in the twinkling of an eye, once-through pressure shaping to the hot crushed aggregates, has effectively reduced the consumption of equipment self;
(2) the utility model adopts the pressurizing mode of the pressurizing cylinder, the diameter of the plunger rod of the main cylinder only needs half of the conventional pressure, thereby reducing the volume of the equipment, lightening the weight and reducing the cost;
(3) the utility model arranges the exhaust holes on the side wall of the bottom of the upper cavity of the pressure cylinder, which can timely remove the waste oil entering the upper cavity under the bottom of the large piston, and in the process of the movement of the large piston and the small piston, the cavity is filled with air to avoid forming a vacuum negative pressure state, and the hydraulic oil in the rodless cavity of the main cylinder is sucked into the upper cavity of the pressure cylinder;
(4) the design of the corresponding large piston and small piston end surface area can be carried out according to the needs of users, and the configuration and the energy loss of auxiliary equipment are reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a side view of the invention of fig. 1;
FIG. 3 is a sectional view showing a coupling structure of the booster cylinder and the master cylinder of FIG. 2;
in the figure: 1. the device comprises a main cylinder, 2, an upper cross beam, 3, a return oil cylinder, 4, a stand column, 5, a movable sliding block, 6, a die, 7, a workbench surface, 8, a lower cross beam, 9, a plunger rod, 10, a pressure cylinder, 11, a large piston, 12, a small piston, 13, a side oil inlet, 14, an oil outlet through hole, 15, an upper oil inlet, 16, an air inlet, 17 and a T-shaped groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the pressure cylinder direct-connected hydraulic press comprises a three-beam four-column type main machine frame, wherein the main machine frame comprises an upper beam 2, a lower beam 8 and four columns 4 connected between the upper beam 2 and the lower beam 8, a working table 7 is arranged above the lower beam 8, two mounting holes are formed in the middle of the upper beam 2, two plunger type main cylinders 1 respectively penetrate through the mounting holes, and the bottoms of the main cylinders 1 are fixed on the lower surface of the upper beam 2 through flanges; the top of the cylinder body of each main cylinder 1 is provided with a piston type booster cylinder 10, the bottom end of the cylinder body of the booster cylinder 10 is combined with the top end of the cylinder body of the main cylinder 1 through a bolt, a second-order reducing cylinder is arranged in the inner cavity of the booster cylinder 10, a large piston 11 is arranged in the upper cavity, the diameter of the upper cavity is matched with that of the large piston 11, the bottom of the large piston 11 is connected with a small piston 12, and the diameter of the lower cavity is matched with that of the small piston 12; a side oil inlet 13 is arranged on the side wall of the rodless cavity of the main cylinder 10, and an upper oil inlet 15 is arranged at the top of the upper cavity of the pressure cylinder 10; an oil outlet through hole 14 is formed between the bottom of the booster cylinder 10 and the top of the main cylinder 1, and the oil outlet through hole 14 is communicated with a lower cavity of the booster cylinder 10 and a rodless cavity of the main cylinder 1; the bottom end of a plunger rod 9 of the main cylinder 1 is connected with the upper surface of a cuboid-shaped movable sliding block 5 through a flange, the movable sliding block 5 is positioned in a frame formed by four upright posts 4, the lower end working surface of the movable sliding block 5 is connected with the upper half part of a mold 6, and the lower half part of the mold 6 is fixed on a working table surface 7 through bolts.
The lower part of the small piston 12 is clamped in the lower cavity of the pressure cylinder 10, and the side wall of the bottom end of the small piston 12 is provided with a sealing strip.
Two side walls of the upper cross beam 3 are respectively connected with a cylinder body of the return oil cylinder 3 through bolts, and a piston end of the return oil cylinder 3 is connected with the side wall of the movable sliding block 5 through bolts.
The diameter ratio of the large piston 11 to the small piston 12 is: 2-3:1. The bottom of the large piston 11 is in threaded connection with the upper part of the small piston 12.
The side wall of the bottom of the upper cavity of the pressure cylinder 10 is provided with an exhaust hole 16.
Four side edges of the movable sliding block 5 are respectively adjacent to the four upright posts 4, and the upright posts 4 become guide tracks of the movable sliding block 5.
A plurality of T-shaped grooves 17 are formed in the working surface of the lower end of the movable sliding block 5, T-shaped pull rods matched with the T-shaped grooves 17 are arranged at the top of the upper half portion of the die 6, and the upper half portion of the die 6 is inserted into the T-shaped grooves 17 through the T-shaped pull rods.
The utility model discloses a theory of operation does:
(1) a fast descending stage: at the beginning of work, the oil inlet of the side oil inlet 13 is started, hydraulic oil is injected into the rodless cavity of the main cylinder 1 and the lower cavity of the pressure cylinder 10 through the oil outlet through hole 14, the small piston 12 and the large piston 11 in the pressure cylinder 10 and the plunger rod 9 of the main cylinder 1 are respectively pushed to the upper end and the lower end, under the action of the hydraulic oil, the plunger rod 9 of the main cylinder 1 drives the movable sliding block 5 and the upper half part of the die 6 to move downwards, and after the upper part and the lower part of the die 6 are buckled, hot crushed materials placed in the die 6 are pressed at normal pressure; in the descending process of the movable sliding block 5, piston rods of the return oil cylinders 3 on the two sides simultaneously extend;
(2) and (3) a pressurization forming stage: when the plunger rod 9 is blocked and does not move any more, the upper oil inlet 15 at the top of the pressure cylinder 10 starts to feed oil, hydraulic oil simultaneously extrudes the large piston 11 and the small piston 12 downwards, the pressure borne by the top of the small piston 12 is far larger than the pressure borne by the bottom of the small piston 12 due to the different diameters of the large piston 11 and the small piston 12, the small piston 12 transmits the pressure to the hydraulic oil below the small piston, the hydraulic oil in the lower cavity of the pressure cylinder 10 and the rodless cavity of the main cylinder 1 is compressed, the pressure of the hydraulic oil is instantly increased to the designed working pressure, the plunger rod 9 is pushed to continuously move downwards, and the movable sliding block 5 continuously presses and presses the;
(3) and (3) a return stage: after the material is formed, the oil is not fed into the upper oil inlet 15; and the piston rod of the return oil cylinder 3 begins to retract, the movable sliding block 5 and the plunger rod 9 of the main cylinder 1 are lifted upwards to the initial position, and meanwhile, the hydraulic oil in the rodless cavity of the main cylinder 1 and the upper cavity of the pressure cylinder 10 flows back to the hydraulic station.
The utility model discloses set up the pressurized cylinder at the top of master cylinder, be provided with big piston and little piston in the pressurized cylinder inner chamber, the pressure of hydraulic oil in the no pole chamber of master cylinder has been decided to the terminal surface area ratio and the stroke of big piston and little piston, can make the pressure of hydraulic oil in the no pole chamber of master cylinder increase to design pressure in the twinkling of an eye, once-through pressure shaping to the hot crushed aggregates, has effectively reduced the consumption of equipment self; the pressurizing mode of the pressurizing cylinder is adopted, the diameter of the plunger rod of the main cylinder is only half of that of the plunger rod under the conventional pressure, the size of the device is reduced, the weight is lightened, and the cost is reduced.
Claims (8)
1. The utility model provides a pressure cylinder direct-connected hydraulic press, it includes three roof beam four-column type host computer frames, and the host computer frame includes entablature (2), bottom end rail (8) and connects four stands (4) between entablature (2) and bottom end rail (8), and the top of bottom end rail (8) is table surface (7), its characterized in that: the middle part of the upper cross beam (2) is provided with two mounting holes, the two plunger type main cylinders (1) respectively penetrate through the mounting holes, and the bottom parts of the cylinder bodies of the main cylinders (1) are fixed on the lower surface of the upper cross beam (2) through flanges; the top of the cylinder body of each main cylinder (1) is provided with a piston type booster cylinder (10), the bottom end of the cylinder body of the booster cylinder (10) is combined with the top end of the cylinder body of the main cylinder (1) through a bolt, a second-order reducing cylinder is arranged in the inner cavity of the booster cylinder (10), a large piston (11) is arranged in the upper cavity, the diameter of the upper cavity is matched with that of the large piston (11), the bottom of the large piston (11) is connected with a small piston (12), and the diameter of the lower cavity is matched with that of the small piston (12); a side oil inlet (13) is arranged on the side wall of the rodless cavity of the main cylinder (1), and an upper oil inlet (15) is arranged at the top of the upper cavity of the pressure cylinder (10); an oil outlet through hole (14) is formed between the bottom of the booster cylinder (10) and the top of the main cylinder (1), and the oil outlet through hole (14) is communicated with a lower cavity of the booster cylinder (10) and a rodless cavity of the main cylinder (1); the bottom end of a plunger rod (9) of the main cylinder (1) is connected with the upper surface of a cuboid movable sliding block (5) through a flange, the movable sliding block (5) is positioned in a frame formed by four upright posts (4), the lower end working surface of the movable sliding block (5) is connected with the upper half part of a mold (6), and the lower half part of the mold (6) is fixed on a working table top (7) through bolts.
2. The booster cylinder direct-connected oil press according to claim 1, characterized in that:
the lower part of the small piston (12) is clamped in the lower cavity of the pressure cylinder (10), and a sealing strip is arranged on the side wall of the bottom end of the small piston (12).
3. The booster cylinder direct-connection type oil press according to claim 1 or 2, characterized in that: two side walls of the upper cross beam (2) are respectively connected with a cylinder body of the return oil cylinder (3) through bolts, and a piston end and a movable end of the return oil cylinder (3)
The side walls of the sliding blocks (5) are connected through bolts.
4. The booster cylinder direct-connected oil press according to claim 3, characterized in that: the area ratio of the diameter of the large piston (11) to the area of the small piston (12) is as follows: 2-3:1.
5. The booster cylinder direct-connected oil press according to claim 4, characterized in that: the bottom of the large piston (11) is in threaded connection with the upper part of the small piston (12).
6. The booster cylinder direct-connected oil press according to claim 5, characterized in that: and an exhaust hole (16) is formed in the side wall of the bottom of the upper cavity of the pressure cylinder (10).
7. The booster cylinder direct-connected oil press according to claim 6, characterized in that: four side edges of the movable sliding block (5) are respectively adjacent to the four upright posts (4), and the upright posts (4) become guide tracks of the movable sliding block (5).
8. The booster cylinder direct-connected oil press according to claim 7, characterized in that: a plurality of T-shaped grooves (17) are formed in the working surface of the lower end of the movable sliding block (5), T-shaped pull rods matched with the T-shaped grooves (17) are arranged at the top of the upper half portion of the die (6), and the upper half portion of the die (6) is inserted into the T-shaped grooves (17) through the T-shaped pull rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920114020.XU CN210257376U (en) | 2019-01-23 | 2019-01-23 | Direct-connected oil press with pressure cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920114020.XU CN210257376U (en) | 2019-01-23 | 2019-01-23 | Direct-connected oil press with pressure cylinder |
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| CN210257376U true CN210257376U (en) | 2020-04-07 |
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| CN201920114020.XU Active CN210257376U (en) | 2019-01-23 | 2019-01-23 | Direct-connected oil press with pressure cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732976A (en) * | 2019-01-23 | 2019-05-10 | 兰州兰石重工有限公司 | The direct-connected hydraulic press of pressurized cylinder |
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- 2019-01-23 CN CN201920114020.XU patent/CN210257376U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732976A (en) * | 2019-01-23 | 2019-05-10 | 兰州兰石重工有限公司 | The direct-connected hydraulic press of pressurized cylinder |
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