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CN-224215822-U - Vacuum hot pressing furnace

CN224215822UCN 224215822 UCN224215822 UCN 224215822UCN-224215822-U

Abstract

The utility model relates to the technical field of hot pressing furnaces and discloses a vacuum hot pressing furnace which comprises a frame, a vacuum hot pressing cavity, an upper pressure head unit and a lower pressure head. According to the vacuum hot-pressing furnace, the energy accumulator, the driving assembly, the upper pressure head, the lower pressure head and the vacuum hot-pressing cavity are matched to realize that the pressure acts on the material accurately and stably, so that the effect of vacuum hot-pressing is optimized.

Inventors

  • WANG ZHONGMING
  • DONG SHUAI
  • GUO LEI
  • DONG YANGANG

Assignees

  • 赤峰邦耀智造科技有限公司

Dates

Publication Date
20260508
Application Date
20250428

Claims (10)

  1. 1. A vacuum hot press furnace is characterized by comprising A frame (1); The vacuum hot-pressing cavity (2) is arranged on the frame (1); The upper pressure head unit (3) comprises at least one energy accumulator (31), a driving assembly (32) and an upper pressure head (33), wherein the energy accumulator (31) and the driving assembly (32) are arranged on the frame (1), the driving assembly (32) is in driving connection with the upper pressure head (33), so that the upper pressure head (33) stretches and contracts towards the vacuum hot-pressing cavity (2), and an oil interface of the energy accumulator (31) is connected with the driving assembly (32); The lower pressure head (4) is arranged in the vacuum hot-pressing cavity (2) and is opposite to the upper pressure head (33), a hot-pressing station is formed between the upper pressure head (33) and the lower pressure head (4), and the hot-pressing station is positioned in the vacuum hot-pressing cavity (2).
  2. 2. The vacuum autoclave of claim 1, the vacuum hot pressing furnace is characterized by further comprising: -a force sensor (51), the force sensor (51) being connected to the upper ram (33); And the controller (6) is arranged on the frame (1), and the controller (6) is respectively and electrically connected with the force sensor (51) and the driving assembly (32).
  3. 3. The vacuum autoclave of claim 2, characterized in that the vacuum hot pressing furnace further comprises And the displacement sensor (52) is fixedly connected to the driving assembly (32) and is in signal connection with the controller (6).
  4. 4. A vacuum hot press oven according to claim 3, characterized in that the driving assembly (32) comprises an upper ram driving member (321) and a driving connection rod (322), the force sensor (51) is sleeved outside the driving connection rod (322), and the upper ram (33) is connected with the driving end of the driving connection rod (322).
  5. 5. The vacuum autoclave of claim 4, further comprising a drive control valve connected between the accumulator (31) and the upper ram drive (321), and the controller (6) is electrically connected to the drive control valve.
  6. 6. Vacuum autoclave as claimed in claim 3 or 4, characterized in that at least two uprights (7) are provided on the frame (1), the vacuum autoclave comprises an upper cross beam (8), the upper cross beam (8) is provided at the end of the uprights (7) remote from the lower ram (4), and the energy storage (31) and the drive assembly (32) are connected to the upper cross beam (8).
  7. 7. Vacuum autoclave as claimed in claim 3 or 4, characterized in that at least one telescopic cylinder (91) is provided on the frame (1), the vacuum autoclave comprises an upper beam (8), the upper beam (8) is connected to the telescopic cylinder (91) and is located at one end of the telescopic cylinder (91) away from the lower ram (4), and the energy accumulator (31) and the driving assembly (32) are fixedly connected to the upper beam (8); The telescopic cylinder (91) drives the upper cross beam (8) to move, so that the driving assembly (32) is connected with the upper pressure head (33) to be close to or far away from the vacuum hot-pressing cavity (2).
  8. 8. Vacuum autoclave as claimed in claim 7, characterized in that said frame (1) is provided with at least two uprights (7), said uprights (7) passing through said upper cross-beam (8), said upper cross-beam (8) being movable along said uprights (7) under the action of the actuation of said telescopic cylinders (91).
  9. 9. The vacuum autoclave of claim 7, it is characterized in that the method comprises the steps of, The telescopic cylinder (91) comprises a telescopic rod (911) and a sleeve (912), the telescopic rod (911) is fixedly connected to the frame (1), and the sleeve (912) is movably sleeved outside the telescopic rod (911); the upper cross beam (8) is fixedly connected with the sleeve (912).
  10. 10. The vacuum hot pressing furnace according to claim 7, wherein at least one telescopic cylinder (91) is two telescopic cylinders (91), two ends of the upper cross beam (8) are respectively connected with a connecting piece (81), and the upper cross beam (8) is connected between the two telescopic cylinders (91) through the connecting piece (81).

Description

Vacuum hot pressing furnace Technical Field The utility model belongs to the technical field of hot pressing furnaces, and particularly relates to a vacuum hot pressing furnace. Background The vacuum hot-press sintering machine is equipment for combining vacuum, hot-press forming and high-temperature sintering together, and is widely applied to industries such as powder metallurgy, welding and the like as a material preparation equipment. The traditional vacuum hot-pressing sintering machine mainly applies constant pressure or constant speed in a hydraulic or mechanical mode and realizes material densification combination in cooperation with a high-temperature environment. However, such conventional vacuum hot press sinters have limitations. For example, the conventional vacuum hot-pressing sintering machine is easy to have the problem of overlarge local stress because only constant static pressure or simple linear pressurization can be provided, and further has the problems of microcrack or interface defect of the material in sintering. The single pressure mode is difficult to adapt to materials under different temperature gradients, so that the materials cannot be sufficiently densified, and further the defects of residual air holes, unfused or incomplete penetration and the like of the materials are caused, and meanwhile, the welding rate and the interface bonding strength of the materials are also influenced. However, under variable pressure conditions, if sudden pressure changes occur, the material will suffer from instantaneous stress impact, resulting in uneven internal stress distribution, localized excessive deformation, and likewise adverse effects on the vacuum hot pressed material. Therefore, how to realize accurate and stable pressure change becomes a key point for improving the performance of the vacuum hot-pressing sintering machine. Disclosure of utility model In order to solve the defects in the prior art, the utility model provides a vacuum hot pressing furnace, which solves the problem that the pressure cannot be accurately and stably changed in the vacuum hot pressing process. The technical effects to be achieved by the utility model are realized by the following technical aspects: The utility model provides a vacuum hot pressing furnace, which comprises A frame; The vacuum hot-pressing cavity is arranged on the rack; The upper pressure head unit comprises at least one energy accumulator, a driving assembly and an upper pressure head, wherein the energy accumulator and the driving assembly are arranged on the frame, the driving assembly is in driving connection with the upper pressure head so as to enable the upper pressure head to move in a telescopic way towards the vacuum hot-pressing cavity, and an oil liquid interface of the energy accumulator is connected with the driving assembly; the lower pressure head is arranged in the vacuum hot-pressing cavity and is opposite to the upper pressure head, a hot-pressing station is formed between the upper pressure head and the lower pressure head, and the hot-pressing station is positioned in the vacuum hot-pressing cavity. In some embodiments, the vacuum autoclave further comprises: The force sensor is connected with the upper pressure head; And the controller is arranged on the rack and is respectively and electrically connected with the force sensor and the driving assembly. . In some embodiments, the vacuum autoclave further comprises And the displacement sensor is fixedly connected to the driving assembly and is in signal connection with the controller. In some embodiments, the driving assembly comprises an upper ram driving piece and a driving connecting rod, the force sensor is sleeved on the outer side of the driving connecting rod, and the upper ram is connected with the driving end of the driving connecting rod. In some embodiments, the drive assembly includes an upper ram drive and a drive control valve connected between the accumulator and the upper ram drive, and the controller is electrically connected to the drive control valve. In some embodiments, at least two vertical rods are arranged on the frame, the vacuum hot pressing furnace comprises an upper cross beam, the upper cross beam is arranged at one end of the vertical rods, which is far away from the lower pressing head, and the energy accumulator and the driving assembly are connected to the upper cross beam. In some embodiments, the frame is provided with at least one telescopic cylinder, the vacuum hot pressing furnace comprises an upper beam, the upper beam is connected to one end of the telescopic cylinder, which is far away from the lower pressure head, and the energy accumulator and the driving component are fixedly connected to the upper beam; The telescopic cylinder drives the upper cross beam to move, so that the driving assembly is close to or far away from the vacuum hot-pressing cavity along with the upper pressure head. In some embodiments, at least two vertic