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CN-224210649-U - Pre-pressing structure for heavy hydraulic press

CN224210649UCN 224210649 UCN224210649 UCN 224210649UCN-224210649-U

Abstract

The utility model discloses a pre-pressing structure for a heavy hydraulic machine, which comprises a pre-pressing plate and a lower pressing plate, wherein both sides of the pre-pressing plate are fixedly connected with limiting sleeves, a lubrication sliding sleeve structure is arranged in each limiting sleeve, the lower pressing plate is arranged above the pre-pressing plate, a die groove is arranged in the bottom end of the pre-pressing plate, both sides of the bottom end of the lower pressing plate are hinged with pressing structures, each pressing structure comprises a push rod, a hinged seat, a sliding seat, a guide seat, a slide rod and a disc-shaped spring, and the push rods are hinged to both sides of the bottom end of the lower pressing plate. When the hydraulic press drives the lower pressing plate to press downwards, the push rods at the bottom of the lower pressing plate disperse the pressing force of the hydraulic press to the push rods, so that the pressing force is dispersed, the density of the formed blank is more uniform, and further, when the structure is pre-pressed, the sliding seat compresses the disc-shaped spring along the sliding rod due to the pressure, and at the moment, the disc-shaped spring compresses and stores elastic potential energy, and the kinetic energy compensation is carried out on the relaxation of each part.

Inventors

  • LIU QINGSONG
  • HUANG HUA
  • LIU XIAOFEI
  • LI JUNHUI
  • Tian Shuohao

Assignees

  • 河南泰田重工机械制造有限公司

Dates

Publication Date
20260508
Application Date
20250516

Claims (7)

  1. 1. A pre-pressing structure for a heavy hydraulic press comprises a pre-pressing plate (1) and a lower pressing plate (4); the method is characterized in that: both sides of the pre-pressing plate (1) are fixedly connected with a limit sleeve (2), a lubrication sliding sleeve structure (3) is arranged in the limit sleeve (2), and a lower pressing plate (4) is arranged above the pre-pressing plate (1); A die groove (7) is formed in the bottom end of the pre-pressing plate (1); The top fixedly connected with mount pad (5) of holding down plate (4), the both sides of holding down plate (4) bottom all articulate there is press structure (6), press structure (6) include push rod (601), articulated seat (602), slide (603), guide holder (604), slide bar (605) and disk spring (606), push rod (601) articulate in the both sides of holding down plate (4) bottom.
  2. 2. The pre-pressing structure for the heavy hydraulic press of claim 1, wherein the lubricating sliding sleeve structure (3) comprises an outer sleeve (301), a sponge ring (302), a top cover (303), a sliding sleeve pipe (304), balls (305), an oil filling port (306), a rubber plug (307) and a fastening nut (308), the outer sleeve (301) is sleeved in a limiting sleeve (2), the sponge ring (302) is wrapped in the outer sleeve (301), the top end of the outer sleeve (301) is in threaded connection with the top cover (303), the bottom end of the top cover (303) is fixedly connected with the sliding sleeve pipe (304), the balls (305) are arranged in the sliding sleeve pipe (304), the oil filling port (306) is formed in one side of the outer sleeve (301), the rubber plug (307) is arranged in the oil filling port (306), and the fastening nut (308) is in threaded connection with the bottom end of the outer side wall of the outer sleeve (301).
  3. 3. The pre-pressing structure for a heavy hydraulic machine according to claim 2, wherein the cross-sectional area of the outer diameter of the outer sleeve (301) is smaller than the cross-sectional area of the inner diameter of the limit sleeve (2).
  4. 4. The pre-pressing structure for the heavy hydraulic machine according to claim 2, wherein a plurality of balls (305) are arranged in the outer side wall of the sliding sleeve pipe (304), and the balls (305) are distributed in the outer side wall of the sliding sleeve pipe (304) at equal intervals.
  5. 5. The pre-pressing structure for the heavy hydraulic machine of claim 1, wherein a hinge seat (602) is hinged to the bottom of the push rod (601), a sliding seat (603) is fixedly connected to the bottom end of the hinge seat (602), a guide seat (604) is fixedly connected to the top end of the pre-pressing plate (1), a slide rod (605) penetrates through the guide seat (604), and a disc-shaped spring (606) is sleeved on the outer side of the slide rod (605).
  6. 6. The pre-pressing structure for the heavy hydraulic machine according to claim 5, wherein the sliding seat (603) and the sliding rod (605) are in a sliding structure, and the pushing rods (601) are symmetrically distributed at the bottom end of the lower pressing plate (4).
  7. 7. The pre-pressing structure for the heavy hydraulic machine of claim 5, wherein a plurality of guide seats (604) are fixedly connected to the top end of the pre-pressing plate (1), and the guide seats (604) are symmetrically distributed on the top end of the pre-pressing plate (1).

Description

Pre-pressing structure for heavy hydraulic press Technical Field The utility model relates to the technical field of heavy hydraulic presses, in particular to a pre-pressing structure for a heavy hydraulic press. Background When heavy hydraulic equipment carries out hydraulic operation, because heavy hydraulic equipment is great in volume, in carrying out the compaction in-process, because the too concentrated phenomenon that appears in the mould blank uneven distribution of partial density easily appears in pressure, and then make the shaping blank defect appear, when this is using at heavy hydraulic press, often can install corresponding pre-compaction structure between hydraulic head and die block, makes heavy hydraulic press can carry out preliminary compaction to the blank in the die block when pushing down. The pre-compaction structure for common heavy hydraulic press is when using, mostly direct mount in hydraulic head bottom, and at heavy hydraulic press pushes down in-process pre-compaction structure at first with the blank contact and the pressing in the die block to this clearance that reduces the blank shaping in-process, the pre-compaction structure for common heavy hydraulic press has better pre-compaction effect still has some problems when using: Because the heavy volume is great in the process of pushing down, if the pre-compaction mould passes through the volume great, and the dynamics is too concentrated when pushing down, easily leads to the blank shaping time, and the region that intermediate pressure is great is comparatively inseparable, and the peripheral pressure is less regional then the density is less. Disclosure of utility model The utility model aims to provide a pre-pressing structure for a heavy hydraulic machine, which is used for solving the defect that the downward pressure of the pre-pressing structure for the existing heavy hydraulic machine is concentrated. In order to solve the technical problems, the technical scheme is that the pre-pressing structure for the heavy hydraulic press comprises a pre-pressing plate and a lower pressing plate, wherein limiting sleeves are fixedly connected to two sides of the pre-pressing plate, a lubricating sliding sleeve structure is arranged in the limiting sleeves, the lower pressing plate is arranged above the pre-pressing plate, a die groove is formed in the bottom end of the pre-pressing plate, an installation seat is fixedly connected to the top end of the lower pressing plate, pressing structures are hinged to two sides of the bottom end of the lower pressing plate, each pressing structure comprises a push rod, a hinging seat, a sliding seat, a guide seat, a sliding rod and a disc-shaped spring, and the push rod is hinged to two sides of the bottom end of the lower pressing plate. When the structure is used, the structure is arranged at the designated position of the heavy hydraulic press, the upright post of the heavy hydraulic press penetrates through the inside of the limit sleeve, the accident pre-pressing plate can stably move up and down and pre-press, then the hydraulic head of the heavy hydraulic press is arranged in the mounting seat, and the top die of the forming die for blanks is arranged in the die groove, so that the pre-pressing structure can stably pre-press the blanks in the bottom die and rapidly form the blanks Preferably, the lubrication sliding sleeve structure comprises an outer sleeve, a sponge ring, a top cover, a sliding sleeve, balls, an oil filling port, a rubber plug and a fastening nut, wherein the outer sleeve is sleeved inside the limiting sleeve, the outer sleeve is wrapped with the sponge ring, the top end of the outer sleeve is connected with the top cover in a threaded manner, the bottom end of the top cover is fixedly connected with the sliding sleeve pipe, the balls are arranged in the sliding sleeve pipe, the oil filling port is formed in one side of the outer sleeve, the rubber plug is mounted inside the oil filling port, and the fastening nut is connected with the bottom end of the outer side wall of the outer sleeve in a threaded manner. Preferably, the cross-sectional area of the outer diameter of the outer sleeve is smaller than the cross-sectional area of the inner diameter of the limit sleeve, so that the lubricating sliding sleeve structure can be arranged in the limit sleeve. Preferably, the ball is provided with a plurality of in the inside of sliding sleeve pipe lateral wall, and a plurality of the ball is equidistant distribution in the inside of sliding sleeve pipe lateral wall to this friction. Preferably, the bottom of push rod articulates there is articulated seat, articulated seat's bottom fixedly connected with slide, the top fixedly connected with guide holder of pre-compaction board, the inside of guide holder is run through there is the slide bar, the outside cover of slide bar is equipped with dish form spring, under the promotion of heavy hydraulic press, makes a plural