CN113210555B - Hydraulic pressure booster mechanism - Google Patents
Hydraulic pressure booster mechanism Download PDFInfo
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- CN113210555B CN113210555B CN202110442426.2A CN202110442426A CN113210555B CN 113210555 B CN113210555 B CN 113210555B CN 202110442426 A CN202110442426 A CN 202110442426A CN 113210555 B CN113210555 B CN 113210555B
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- pressurizing
- plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/10—Drives for forging presses
- B21J9/12—Drives for forging presses operated by hydraulic or liquid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
A hydraulic pressurizing mechanism comprises a pressurizing plate and a lateral locking mechanism used for locking the position of the pressurizing plate, wherein a combined hydraulic cavity is arranged in the pressurizing plate, a small-diameter pressurizing cavity and a large-diameter pressurizing cavity are sequentially arranged in the combined hydraulic cavity from top to bottom along the vertical direction, a pressurizing plunger is installed in the pressurizing cavity in a sliding fit mode, the upper end of the pressurizing plunger penetrates through the pressurizing plate and is provided with an extending end, and the extending end is used for being connected with a movable cross beam of a press machine; and a pressurizing piston is arranged in the pressurizing cavity in a sliding fit manner, and the lower end of the pressurizing piston penetrates through the pressurizing plate and is connected with the pressing piece. According to the scheme, under the condition that the overall structure of the press machine is not changed, the pressurizing mechanism can be directly matched on the press machine, the pressure of equipment can be amplified, the forming force is greatly increased, the large opening and closing die stroke is realized, and large metal parts can be formed on a small hydraulic machine.
Description
Technical Field
The invention relates to the technical field of hydraulic forming equipment, in particular to a hydraulic pressurizing mechanism.
Background
At present, when a hydraulic press is adopted for precision forming of large metal parts such as extrusion, precision forging, liquid die forging and the like, a large forming force is often required to meet the requirement of material deformation; meanwhile, a large working stroke is required to meet the requirement of the die sinking space. The problems are generally solved by adopting a large hydraulic machine, and the large hydraulic machine has a huge structure, high price, a complex hydraulic system and lower working speed, so that the production cost is greatly increased.
The hydraulic press with the conventional supercharging mechanism is adopted, so that the height of the hydraulic cylinder can be greatly increased, and the hydraulic press with a large stroke can not be forced; and the hydraulic machine with the supercharging mechanism controls the high pressure born by the pipeline, so that the service life of the hydraulic machine is shortened, and the leakage probability is reduced.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide a hydraulic pressurizing mechanism which can be directly mounted on a press machine, can amplify the pressure of the equipment, greatly increase the forming force, and can form large metal parts on a small hydraulic machine.
The technical scheme adopted by the invention is as follows: a hydraulic pressurizing mechanism comprises a pressurizing plate and a lateral locking mechanism used for locking the position of the pressurizing plate, wherein a combined hydraulic cavity is arranged in the pressurizing plate, a small-diameter pressurizing cavity and a large-diameter pressurizing cavity are sequentially arranged in the combined hydraulic cavity from top to bottom along the vertical direction, a pressurizing plunger is installed in the pressurizing cavity in a sliding fit mode, the upper end of the pressurizing plunger penetrates through the pressurizing plate and is provided with an extending end, and the extending end is used for being connected with a movable cross beam of a press machine; and a pressurizing piston is arranged in the pressurizing cavity in a sliding fit manner, and the lower end of the pressurizing piston penetrates through the pressurizing plate to be connected with the connecting plate.
Further optimization, the lateral locking mechanism is arranged on the side face of the pressure increasing plate, and the position of the pressure increasing plate is locked through the mutually-contacted limiting faces in the lateral locking mechanism.
Further optimize, side locking mechanism include the side pressure jar, sliding fit side pressure plunger and the side round pin in the side pressure jar, the side round pin set up in the shrinkage pool of pressure boost board side and connect the side pressure plunger, the side pressure jar sets up in the pressure boost board and symmetry sets up the both sides in the combination hydraulic pressure chamber, the side pressure jar work, through the side pressure plunger drive the side round pin remove and insert the position of pressure boost board in the pinhole on the frame fixed.
And further optimizing, the side pressure cylinder is communicated with the combined hydraulic cavity through an oil way, and the pressure transmission medium of the combined hydraulic cavity drives the side pressure cylinder to work.
Further preferably, a guide plate which plays a role in guiding the side pin when moving is further arranged in the concave hole.
Further preferably, the lateral locking mechanism is further provided with a spring for restraining the position of the side pin, and the side pin is restrained in the concave hole on the side surface of the pressure increasing plate through the elastic force of the spring.
Further optimizing, still be equipped with the restraint frame, the restraint frame include diaphragm, riser and the bottom plate of integrative connection, be equipped with the pinhole with side direction locking mechanism complex on the riser.
Further optimize, still be equipped with the dog that is used for blockking the pressure boost board further to move on the restraint frame, the dog passes through coupling assembling and sets up on the riser, and the height of accessible coupling assembling adjustment dog.
The beneficial effects of the invention are:
in the scheme, by optimizing the structural composition of the hydraulic pressurization mechanism, the pressure of equipment can be amplified, the forming force is greatly increased, the mould opening and closing stroke of the equipment is basically not changed, and large parts can be formed on a smaller hydraulic machine; the method specifically comprises the following steps: the pressurizing mechanism consists of a pressurizing plate with a combined hydraulic cavity and a lateral locking mechanism, wherein a pressurizing piston and a pressurizing piston with the diameter larger than that of the pressurizing plunger are arranged in the combined hydraulic cavity, the pressurizing plunger is connected with a movable cross beam of the hydraulic machine, the pressurizing piston is connected with the die through a connecting plate, and the pressure of the pressurizing plunger is transmitted to the pressurizing piston through liquid medium in the combined hydraulic cavity to realize pressurizing output.
In the scheme, the hydraulic press drives the pressurizing mechanism and the die to realize quick no-load descending and return actions, when the hydraulic pressurizing mechanism works, the moving speed of the hydraulic press (the pressurizing plunger) can be changed into the slow movement of the pressurizing piston and the driven die, and the speed ratio is the ratio of the area of the pressurizing piston to the area of the pressurizing plunger. Therefore, the device has the characteristics of rapid descending, slow pressurization, slow pressure relief and rapid return, is beneficial to improving the production efficiency, saving energy and reducing consumption, and has continuous action and convenient operation.
In the third scheme, the pressurizing mechanism locks the position of the pressurizing plate on the vertical plate through the lateral locking mechanism, and when the pressurizing forming is carried out, the reaction force is borne by the movable cross beam and the vertical plate, so that the load of the hydraulic machine frame is not increased.
In the scheme, the pressurizing mechanism only works when the workpiece is subjected to high-pressure forming, the stroke of the pressurizing mechanism is short, and therefore the influence on the height of the main hydraulic cylinder is small.
In its five, this scheme, booster mechanism simple structure need not reform transform equipment, is convenient for realize, and the action is reliable, has better practicality.
Drawings
Fig. 1 is a schematic structural diagram of one embodiment of the present invention.
Reference numerals: 1. the hydraulic press comprises a pressure increasing plate, 2 parts of a connecting plate, 3 parts of a pressure applying plunger, 4 parts of a nut, 5 parts of a pressure increasing piston, 6 parts of a guide plate, 7 parts of a spring, 8 parts of a cylinder cover, 9 parts of a side pin, 10 parts of the spring, 11 parts of a screw, 12 parts of the screw, 21 parts of a transverse plate, 22 parts of a vertical plate, 23 parts of a bottom plate, 24 parts of a stop block, 31 parts of an upper die, 32 parts of a lower die, M parts of a pin hole, a parts of a combined hydraulic cavity, b parts of an oil way and c parts of a side pressure cylinder.
Detailed Description
The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
It should be noted that: unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" and "an" or "the" and similar referents in the description and claims of the present invention are not to be construed as limiting in number, but rather as indicating the presence of at least one. The word "comprise" or "comprises", and the like, indicates that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, but does not exclude other elements or items having the same function.
A hydraulic pressurizing mechanism is connected to a movable cross beam of a press and driven by a power output end of the press, the pressurizing mechanism consists of a pressurizing plate with a combined hydraulic cavity and a lateral locking mechanism for locking the position of the pressurizing plate, the pressurizing plate is internally provided with the combined hydraulic cavity, the combined hydraulic cavity is internally provided with a small-diameter pressurizing cavity and a large-diameter pressurizing cavity from top to bottom in sequence along the vertical direction, a pressurizing plunger is installed in the pressurizing cavity in a sliding fit manner, and the upper end of the pressurizing plunger penetrates through the pressurizing plate and is provided with an extending end for being connected with the movable cross beam of the press; a pressurizing piston is arranged in the pressurizing cavity in a sliding fit mode, the lower end of the pressurizing piston penetrates through the pressurizing plate and then is connected with a connecting plate, and an upper die of the die is arranged on the connecting plate.
In this scheme, side direction locking mechanism can set up the side at the pressure boost plate, locks the position of pressure boost plate through the spacing face of mutual contact among the side direction locking mechanism, for example adopts the cooperation of side round pin and pinhole or the cooperation of boss and positioning groove etc. specifically can adopt following structure: the lateral locking mechanism comprises a lateral pressure cylinder, lateral pressure plungers and lateral pins, wherein the lateral pressure plungers are in sliding fit with the lateral pressure cylinder, the lateral pins are arranged in concave holes in the side face of the pressure plate and connected with the lateral pressure plungers, the lateral pressure cylinders are arranged in the pressure plate and symmetrically arranged on two sides of the combined hydraulic cavity, the pressure measuring cylinders work, and the lateral pressure plungers drive the lateral pins to move and are inserted into pin holes in the rack to fix the position of the pressure plate.
It should be noted that: the side pressure cylinder is communicated with the combined hydraulic cavity through an oil way, a pressure transmission medium of the combined hydraulic cavity drives the side pressure cylinder to work, and the structure can be matched with a stop block on the rack to jointly restrain the movement of the pressure increasing plate.
In the scheme, the lateral locking mechanism is further provided with a guide plate which plays a role in guiding the side pin when moving in the concave hole and a spring for restraining the position of the side pin, and the side pin is restrained in the concave hole on the side face of the pressurizing plate through the elasticity of the spring.
Examples 1,
The specific structure of one embodiment of the present invention is described in detail below with reference to the accompanying drawings: as shown in fig. 1, the hydraulic pressurizing mechanism comprises a restraint frame and a pressurizing mechanism, wherein the restraint frame comprises a transverse plate 21, a vertical plate 22 and a bottom plate 23 which are integrally connected, the vertical plate 22 is provided with a pin hole M and is fixedly connected with a stop block 24;
in the embodiment, the pressurizing mechanism comprises a pressurizing plate 1 with a combined hydraulic cavity a and a lateral locking mechanism for locking the position of the pressurizing plate 1, a small-diameter pressurizing cavity and a large-diameter pressurizing cavity are sequentially arranged in the combined hydraulic cavity a of the pressurizing plate 1 from top to bottom along the vertical direction, a pressurizing plunger 3 is arranged in the pressurizing cavity in a sliding, sealing and matching manner, the upper end of the pressurizing plunger 3 penetrates through the pressurizing plate 1 and is provided with an extending end for connecting with a movable cross beam of a press (a connecting device is not shown); the lower end of the pressure plunger 3 is fixedly connected with a fixing nut 4, and the fixing nut 4 can bear the weight of parts such as the pressure plate 1, the connecting plate 2 and the upper die 31 and the return force during forming;
in this embodiment, the upper end piston of the boost piston 5 is in sliding sealing fit with the boost cavity at the lower end of the combined hydraulic cavity a, the lower end piston rod of the boost piston 5 is in sliding fit with the cylinder cover 8 on the boost plate 1, the cylinder cover 8 is fixedly connected with the boost plate 1, the bottom of the piston rod is fixedly connected with the connecting plate 2 through the screw 12, and the connecting plate 2 is connected with the boost plate through the spring 10 and the screw 11, so that the piston 5 is located at the upper starting point position in the boost cylinder, and meanwhile, when the position of the boost plate 1 is fixed, the boost piston 5 can drive the connecting plate 2 and the upper die 31 to generate a certain displacement.
When the small-diameter pressing plunger 3 presses the combined hydraulic chamber a, the large-diameter pressurizing piston 5 can generate a larger working pressure, and the pressurizing ratio is equal to the ratio of the cross-sectional areas of the pressurizing piston and the pressing plunger; for example, the following steps are carried out: the diameter of the pressurizing plunger 3 is set tod 1 The booster piston 5 has a diameter ofd 2 The pressure increase ratio in the pressure increase mechanismnIs composed of
n=d 2 2 /d 1 2
If it is notd 2 =3d 1 The boost ratio can reach 9.
Should be increased as much as possible as the structural size of the pressure increasing plate 1 allowsd 1 Andd 2 the size of the combined hydraulic cavity a can be reduced, so that the pressure of the pressure transmission medium of the combined hydraulic cavity a can be reduced, and the sealing performance can be improved.
In this embodiment, the lateral locking mechanism includes lateral pressure cylinders c, the lateral pressure cylinders c are transversely and symmetrically arranged on two sides of the combined hydraulic cavity a, lateral pressure plungers are installed in the lateral pressure cylinders c in a sliding and sealing fit manner, lateral pins 9 are fixedly connected to the outer sides of the lateral pressure plungers, the lateral pins 9 are fixedly matched by sliding of guide plates 6 and are constrained to the inner sides by springs 7, and the lateral pressure cylinders c, the lateral pins 9, the guide plates 6, the springs 7 and the like form the lateral locking mechanism; when the oil pressure in the combined hydraulic cavity a is greater than the elastic force of the spring 7, the lateral locking mechanism works to move the lateral pin 9 outwards and insert the lateral pin into the pin hole M of the restraint frame, so that the pressure increasing plate 1 can be fixed, the pressure increasing mechanism can act, and a large pressure is generated on the die.
The combined hydraulic cavity a is communicated with the side pressure cylinder c through an oil path b, the cylinder is filled with pressure transmission medium (oil), and an oil adding hole is not shown in the figure.
The downward direction of movement of the parts in fig. 1 is referred to as the down direction and the upward direction of movement is the return direction; the lateral clamping mechanism is called a forward direction from the center to both sides, and a backward direction in the opposite direction.
The action process of the embodiment is as follows:
firstly, the press machine works, the movable cross beam drives the pressurizing device and an upper die 31 of the die to rapidly move downwards, and the movement speed is controlled by a hydraulic system of the hydraulic machine;
step two, when the upper die 31 and the lower die 32 start to be closed, the pressure increasing plate 1 touches the stop block 24 on the vertical plate 22 to stop moving, so that the lateral locking mechanism is superposed with the axis of the pin hole M on the side beam;
and step three, the press machine drives the pressing plunger 3 to continuously move downwards, the oil pressure of the combined hydraulic cavity a is increased, and at the moment, because the movement resistance of the side pin 9 is far smaller than the pressure required by the movement of the pressurizing piston 5, the pressure oil of the combined hydraulic cavity a firstly pushes the side pin 9 to enter the pin hole M, so that the pressurizing plate 1 is locked. Because sufficient lateral stress area exists between the side pin 9 and the pin hole M, sufficient mold locking force can be borne, and after the side pin 9 enters the pin hole M, the pressure increasing plate 1 is limited in movement and stops moving;
the pressing plunger 3 continues to move downwards, the oil pressure of the combined hydraulic cavity a continuously rises, and the pressurizing piston 5 drives the connecting plate 2 and the upper die 31 of the die to move downwards to perform die assembly and extrusion forming;
step five, returning the press, namely, reducing the oil pressure of the combined hydraulic cavity a, resetting the connecting plate 2 under the action of the spring 10, retreating the side pin 9 under the action of the elastic force of the spring 7, and retreating the pin hole M;
step six, the press machine continues to return, and the pressing plunger 3 drives the pressure increasing plate 1 and the connected part to retreat together, so that the return of the die is realized;
and step seven, the ejection mechanism of the press works to eject the workpiece, and the one-step forming process is completed.
The whole pressurizing mechanism can move up and down rapidly under the driving of the press, has larger die opening and closing stroke and is convenient for process operation; when the forming action is carried out, the device has a larger pressurization effect and a slower descending speed, and meets the process requirement on plastic forming.
The mode locking pressurizing device is applied to extrusion forming, and the mechanism can be used in the forming process of large parts such as liquid forging, precision forging and the like.
It should be noted that while the invention has been described in terms of the above-mentioned embodiments, other embodiments are also possible. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications be covered by the appended claims and their equivalents.
Claims (5)
1. The utility model provides a hydraulic pressure booster mechanism which characterized in that: the hydraulic pressurizing mechanism comprises a pressurizing plate and a lateral locking mechanism used for locking the position of the pressurizing plate, a combined hydraulic cavity is arranged in the pressurizing plate, a small-diameter pressurizing cavity and a large-diameter pressurizing cavity are sequentially arranged in the combined hydraulic cavity from top to bottom along the vertical direction, a pressurizing plunger is installed in the pressurizing cavity in a sliding fit mode, the upper end of the pressurizing plunger penetrates through the pressurizing plate and is provided with an extending end, and the extending end is used for being connected with a movable cross beam of the press; a pressurizing piston is arranged in the pressurizing cavity in a sliding fit manner, and the lower end of the pressurizing piston penetrates through the pressurizing plate to be connected with the connecting plate;
the lateral locking mechanism is arranged on the side surface of the pressure increasing plate, and the position of the pressure increasing plate is locked by the mutually contacted limiting surfaces in the lateral locking mechanism; the lateral locking mechanism comprises a lateral pressure cylinder, lateral pressure plungers and lateral pins, wherein the lateral pressure plungers are in sliding fit in the lateral pressure cylinder, the lateral pins are arranged in concave holes in the lateral surface of the pressure plate and connected with the lateral pressure plungers, the lateral pressure cylinders are arranged in the pressure plate and symmetrically arranged on two sides of the combined hydraulic cavity, the lateral pressure cylinders work, and the lateral pressure plungers drive the lateral pins to move and are inserted into pin holes in the rack to fix the position of the pressure plate; the side pressure cylinder is communicated with the combined hydraulic cavity through an oil way, and the pressure transmission medium of the combined hydraulic cavity drives the side pressure cylinder to work.
2. A hydraulic booster mechanism according to claim 1, characterized in that: and a guide plate which plays a role of guiding the side pin when moving is arranged in the concave hole.
3. A hydraulic booster mechanism according to claim 1, characterized in that: and a spring for restraining the position of the side pin is also arranged in the lateral locking mechanism, and the side pin is restrained in a concave hole on the side surface of the pressure increasing plate through the elasticity of the spring.
4. A hydraulic booster mechanism according to claim 1 characterized in that: the lateral locking mechanism is characterized by further comprising a constraint frame, wherein the constraint frame comprises a transverse plate, a vertical plate and a bottom plate which are integrally connected, and the vertical plate is provided with a pin hole matched with the lateral locking mechanism.
5. A hydraulic booster mechanism according to claim 4, characterized in that: the restraint frame is further provided with a stop dog for stopping the pressurizing plate from further moving, the stop dog is arranged on the vertical plate through the connecting assembly, and the height of the stop dog can be adjusted through the connecting assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110442426.2A CN113210555B (en) | 2021-04-23 | 2021-04-23 | Hydraulic pressure booster mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110442426.2A CN113210555B (en) | 2021-04-23 | 2021-04-23 | Hydraulic pressure booster mechanism |
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| CN113210555A CN113210555A (en) | 2021-08-06 |
| CN113210555B true CN113210555B (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110442426.2A Active CN113210555B (en) | 2021-04-23 | 2021-04-23 | Hydraulic pressure booster mechanism |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61115626A (en) * | 1984-11-08 | 1986-06-03 | Ckd Corp | Locking mechanism with air cylinder and press lower die ascending descending device using air cylinder thereof |
| JPH07236995A (en) * | 1994-03-02 | 1995-09-12 | Nisshinbo Ind Inc | Hydraulic press device |
| CN101725580A (en) * | 2009-11-21 | 2010-06-09 | 潘孝敏 | Hydraulic pressure cylinder |
| CN205298095U (en) * | 2015-12-25 | 2016-06-08 | 青岛岩康塑料机械有限公司 | Supercharged oil cylinder |
| CN107457340A (en) * | 2017-08-30 | 2017-12-12 | 兰州兰石集团有限公司 | A kind of integrated hybrid drive-type twin-tub tandem supercharging hydraulic press |
| CN109702129A (en) * | 2019-02-27 | 2019-05-03 | 河南科技大学 | Liquid forging device and its booster body |
-
2021
- 2021-04-23 CN CN202110442426.2A patent/CN113210555B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61115626A (en) * | 1984-11-08 | 1986-06-03 | Ckd Corp | Locking mechanism with air cylinder and press lower die ascending descending device using air cylinder thereof |
| JPH07236995A (en) * | 1994-03-02 | 1995-09-12 | Nisshinbo Ind Inc | Hydraulic press device |
| CN101725580A (en) * | 2009-11-21 | 2010-06-09 | 潘孝敏 | Hydraulic pressure cylinder |
| CN205298095U (en) * | 2015-12-25 | 2016-06-08 | 青岛岩康塑料机械有限公司 | Supercharged oil cylinder |
| CN107457340A (en) * | 2017-08-30 | 2017-12-12 | 兰州兰石集团有限公司 | A kind of integrated hybrid drive-type twin-tub tandem supercharging hydraulic press |
| CN109702129A (en) * | 2019-02-27 | 2019-05-03 | 河南科技大学 | Liquid forging device and its booster body |
Non-Patent Citations (1)
| Title |
|---|
| 一种液压增压缸的应用;董传军等;《制造技术与机床》;20090702(第7期);第108-109页 * |
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