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CN-224224297-U - Novel prevent changeing nitrogen spring subassembly that ejector pin cylinder replaced ejector pin

CN224224297UCN 224224297 UCN224224297 UCN 224224297UCN-224224297-U

Abstract

The utility model discloses a novel nitrogen spring assembly with an anti-rotation ejector rod cylinder barrel for replacing an ejector rod, which comprises an outer cylinder body, a flange, an ejector rod cylinder barrel and a positioning block, wherein the lower end of the ejector rod cylinder barrel penetrates through the flange to be arranged in an inner hole cavity of the outer cylinder body, the flange is spirally locked at the upper end of the outer cylinder body, the ejector rod cylinder barrel is integrally designed into a nitrogen spring cylinder barrel and an ejector rod and can reciprocate up and down in the inner hole cavity of the outer cylinder body, at least one side of the upper end of the ejector rod cylinder barrel is provided with a limiting sliding surface, the flange is at least provided with one positioning block for preventing the ejector rod cylinder barrel from rotating, the positioning block is fixed on the flange through a fixing hole arranged on the first bolt, one side of the positioning block is provided with a limiting fixed surface matched with the limiting sliding surface, and the problems that the existing ejector rod nitrogen spring assembly is inconvenient to detect and maintain in later period due to the fact that the positioning block and an independent nitrogen spring are arranged in the positioning block are solved through the arrangement.

Inventors

  • LI HAIGUANG

Assignees

  • 东莞市博鼎精密机械制造有限公司

Dates

Publication Date
20260512
Application Date
20250528

Claims (7)

  1. 1. The novel nitrogen spring assembly capable of preventing the ejector rod cylinder from rotating comprises an outer cylinder body (1), a flange (2), an ejector rod cylinder barrel (3) and a positioning block (4), wherein the lower end of the ejector rod cylinder barrel (3) penetrates through the flange (2) to be arranged in an inner hole cavity of the outer cylinder body (1), the flange (2) is spirally locked at the upper end of the outer cylinder body (1), the ejector rod cylinder barrel (3) is designed in a two-in-one mode and can reciprocate up and down in an inner hole cavity of the outer cylinder body (1), at least one side of the upper end of the ejector rod cylinder barrel (3) is provided with a limiting sliding surface (301), the flange (2) is provided with at least one positioning block (4) used for preventing the ejector rod cylinder barrel (3) from rotating, the positioning block (4) is fixed on the flange (2) through a fixing hole (402) formed in the first bolt (8), one side of the positioning block (4) is provided with the limiting sliding surface (301), and the limiting sliding surface (301) abuts against the limiting sliding surface (401) to be used for preventing the ejector rod cylinder barrel (3) from rotating.
  2. 2. The nitrogen spring assembly with the novel anti-rotation ejector rod cylinder barrel replacing the ejector rod is characterized in that a through hole (201) for passing through the ejector rod cylinder barrel (3) and a thread groove (202) for being locked at the upper end of the outer cylinder body (1) in a spiral mode are coaxially arranged on the flange (2), a fastening tooth hole (203) is further formed in one side face of the flange (2), and a fastening screw (12) penetrates through the fastening tooth hole (203) and is used for fixing the flange (2) on the outer cylinder body (1).
  3. 3. The nitrogen spring assembly for replacing the ejector rod by the novel anti-rotation ejector rod cylinder barrel is characterized in that an air charging hole (302) is formed in the upper end of a limit sliding surface (301) of the ejector rod cylinder barrel (3), the air charging hole (302) is communicated with the nitrogen spring cylinder barrel (31), a mounting hole (303) is formed in the top of the ejector rod cylinder barrel (3), at least two protrusions (307) are formed in the outer surface of the lower end of the ejector rod cylinder barrel (3), a second guide ring (304) is arranged between the two protrusions (307), a guide sleeve (7) is fixed at the lower end of an inner cavity of the ejector rod cylinder barrel (3) through a clamp spring (305), and a plunger rod (6) capable of sliding relative to the guide sleeve (7) is arranged in an inner hole of the guide sleeve.
  4. 4. The nitrogen spring assembly with the novel anti-rotation ejector rod cylinder barrel replacing the ejector rod according to claim 3, wherein a valve core (10) and a bolt plug (11) are sequentially arranged in the inflation hole (302) from inside to outside.
  5. 5. The nitrogen spring assembly with the novel anti-rotation ejector rod cylinder barrel replacing the ejector rod is characterized in that an O-shaped ring (701), a clamp spring (305) and an outer dust ring (306) are sequentially arranged between the outer side of the guide sleeve (7) and the inner side of the ejector rod cylinder barrel (3) from top to bottom, and a main sealing ring (702), a third guide ring (703) and an inner dust ring (704) are sequentially arranged between the inner side of the guide sleeve (7) and the outer side of the plunger rod (6) from top to bottom.
  6. 6. The nitrogen spring assembly with the novel anti-rotation ejector rod cylinder barrel replacing the ejector rod according to claim 1 is characterized in that at least one first guide ring (101) is arranged at the upper part of an inner cavity of the outer cylinder body (1), and the first guide ring (101) is used for guiding the ejector rod cylinder barrel (3).
  7. 7. The nitrogen spring assembly with the novel anti-rotation ejector rod cylinder barrel replacing the ejector rod is characterized in that a bottom cover (5) is locked at the bottom of an inner cavity of the outer cylinder body (1) in a spiral mode, and the upper end face of the bottom cover (5) and the lower bottom face of the plunger rod (6) are fixedly locked and attached through a second bolt (9).

Description

Novel prevent changeing nitrogen spring subassembly that ejector pin cylinder replaced ejector pin Technical Field The utility model relates to the technical field of nitrogen spring assemblies, in particular to a novel nitrogen spring assembly with a rotation-preventing ejector rod cylinder barrel replacing an ejector rod. Background When a certain die is used, a push rod assembly is required to be installed, when a non-circular irregular push block is installed on a push rod in the push rod assembly, the circumferential rotation of the push rod is required to be limited, dislocation of the push block installed on the push rod and a die hole is prevented, die accident caused by the push block is prevented, and particularly, when the gap between the die design push block and the die matching hole is smaller, the running precision of the push block is required to be ensured, and the running reliability of the die is ensured. The existing product is inconvenient to detect and maintain in later stage due to the built-in positioning block and the independent nitrogen spring, and has high manufacturing and processing cost and poor durability. Disclosure of utility model The utility model mainly aims to provide a novel nitrogen spring assembly with an anti-rotation ejector rod cylinder barrel instead of an ejector rod, which can effectively solve the problems in the background technology. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: The novel nitrogen spring assembly capable of preventing the ejector rod cylinder from rotating comprises an outer cylinder body, a flange, an ejector rod cylinder and a positioning block, wherein the lower end of the ejector rod cylinder penetrates through an inner hole cavity formed in the outer cylinder body and is spirally locked at the upper end of the outer cylinder body, the ejector rod cylinder is integrally designed with the nitrogen spring cylinder and the ejector rod and can reciprocate up and down in the inner hole cavity of the outer cylinder body, at least one side of the upper end of the ejector rod cylinder is provided with a limiting sliding surface, at least one positioning block for preventing the ejector rod cylinder from rotating is arranged on the flange, the positioning block is fixed on the flange through a fixing hole formed in the positioning block, one side of the positioning block is provided with a limiting sliding surface, and the limiting sliding surface abuts against the limiting sliding surface to prevent the ejector rod cylinder from rotating. In order to achieve the effect that the flange is fixed on the outer cylinder body more firmly, the novel anti-rotation ejector rod cylinder barrel is used for replacing the nitrogen spring assembly of the ejector rod, the flange is coaxially provided with a through hole for passing through the ejector rod cylinder barrel and a thread groove for being locked at the upper end of the outer cylinder body in a spiral mode, one side face of the flange is further provided with a fastening tooth hole, and a fastening screw penetrates through the fastening tooth hole and is used for fixing the flange on the outer cylinder body. In order to achieve the effect that the ejector rod cylinder barrel can stably and telescopically work, the novel anti-rotation ejector rod cylinder barrel is used for replacing the nitrogen spring assembly of the ejector rod, the upper end of the limiting sliding surface of the ejector rod cylinder barrel is provided with an air charging hole which is communicated with the nitrogen spring cylinder barrel, the top of the ejector rod cylinder barrel is provided with a mounting hole, the outer surface of the lower end of the ejector rod cylinder barrel is at least provided with two bulges, a second guide ring is arranged between the two bulges, the lower end of the inner cavity of the ejector rod cylinder barrel is fixedly provided with a guide sleeve through a clamp spring, and the inner hole of the guide sleeve is provided with a plunger rod which can slide relative to the guide sleeve. In order to achieve the effect that the nitrogen spring assembly can be filled and discharged with nitrogen conveniently, the novel anti-rotation ejector rod cylinder barrel is used for replacing the nitrogen spring assembly of the ejector rod, and a valve core and a bolt plug are sequentially arranged in the air filling hole from inside to outside. In order to achieve the effect that high-pressure nitrogen in an inner cavity of the ejector rod cylinder barrel is effectively sealed when the novel anti-rotation ejector rod cylinder barrel replaces the nitrogen spring assembly of the ejector rod, an O-shaped ring, a clamp spring and an outer dust ring are sequentially arranged between the outer side of the guide sleeve and the inner side of the ejector rod cylinder barrel from top to bottom, and a main sealing ring, a third guide ring and an inner dust ring