Dustproof mechanism for nitrogen spring

Abstract

The utility model discloses a dustproof mechanism for a nitrogen spring, which relates to the technical field of nylon dust prevention and comprises a nitrogen cylinder, a plunger rod is movably mounted at the top end of the nitrogen cylinder, a nylon dustproof cover is arranged at the upper end of the nitrogen cylinder, and the nylon dustproof cover is sleeved outside the plunger rod. The nylon dustproof cover is installed outside the plunger rod to form a physical barrier, oxide skin and condensate water generated in the working process of a hot-pressing die can be effectively prevented from entering the spring, the sealing performance is further enhanced by sleeving the nylon dustproof cover on the butt joint ring groove of the nitrogen cylinder through the dustproof sealing ring, and the service life of the nitrogen cylinder is prolonged. The inside of the spring is isolated from the external environment, external impurities and liquid are prevented from invading, the nylon dustproof sleeve is combined with the dustproof sealing ring, the invasion of oxide skin and condensate water can be effectively prevented, the service life of the nitrogen spring is prolonged, and the maintenance and replacement frequency of the nitrogen spring is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nylon dustproofing, in particular to a dustproofing mechanism for a nitrogen spring. Background Art

[0002] At present, nitrogen springs have the functions that are difficult to be completed by conventional elastic components such as metal springs, rubber and air cushions, simplifying mold design and manufacturing, facilitating mold installation and adjustment, and extending the service life of the mold;

[0003] Nitrogen springs are easily corroded by oxide scale and condensed water during operation in hot forming molds, which leads to corrosion of the plunger rod and wear of the seals, affecting their lifespan and performance. Existing nitrogen springs lack effective external protection devices, and a design that can solve the above problems is urgently needed. Utility Model Content

[0004] The purpose of the present utility model is to provide a dustproof mechanism for a nitrogen spring to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a dustproof mechanism for a nitrogen spring, comprising a nitrogen cylinder, a plunger rod movably mounted on the top of the nitrogen cylinder, a nylon dust cover provided on the upper end of the nitrogen cylinder, the nylon dust cover being sleeved on the outside of the plunger rod, a docking circular opening being provided in the middle of the top end of the nylon dust cover, the cross-section of the nylon dust cover being a U-shaped structure, and the nylon dust cover being a circular structure when viewed from above.

[0006] Preferably, the cross-section of the docking circular opening at the top end of the nylon dust cover is an arc-shaped structure, and buckle mounting grooves are provided on the upper end around the outside of the plunger rod.

[0007] Preferably, the buckle mounting groove is annular in structure, and the nylon dust cover is made of nylon.

[0008] Preferably, a naughty hole is opened in the middle of the upper left end of the nylon dust cover, and the naughty hole has an inclined structure.

[0009] Preferably, the upper end of the nylon dust cover is designed to be sloped.

[0010] Preferably, a docking ring groove is provided at the upper end of the exterior of the nitrogen cylinder, a dustproof sealing ring is installed in the inner cavity of the docking ring groove, and elastic lips are installed around the exterior of the dustproof sealing ring.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model discloses a nylon dust cover is installed on the outside of the plunger rod to form a physical barrier, which can effectively block the oxide scale and condensed water generated during the working process of the hot pressing mold to prevent them from entering the interior of the spring. The dustproof sealing ring is sleeved on the docking ring groove of the nitrogen cylinder to further enhance the sealing performance, ensure that the interior of the spring is isolated from the external environment, and prevent the intrusion of external impurities and liquids. The combination of the nylon dust cover and the dustproof sealing ring can effectively prevent the intrusion of oxide scale and condensed water, extend the service life of the nitrogen spring, and reduce the frequency of maintenance and replacement of the nitrogen spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Provides an overall structural diagram for an embodiment of the utility model;

[0014] Figure 2 A structural diagram of an overall horizontal section provided for an embodiment of the utility model;

[0015] Figure 3 This is a structural diagram of the cross section of the dustproof sealing ring provided in an embodiment of the present utility model.

[0016] In the figure: 1. Nitrogen cylinder; 2. Plunger rod; 3. Nylon dust cover; 4. Buckle mounting groove; 5. Air hole; 6. Docking ring groove; 7. Dustproof sealing ring; 8. Elastic lip. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-3 The utility model provides a technical solution: a dust-proof mechanism for a nitrogen spring, comprising a nitrogen cylinder 1, a plunger rod 2 movably mounted on the top of the nitrogen cylinder 1, a nylon dust cover 3 provided on the upper end of the nitrogen cylinder 1, the nylon dust cover 3 being sleeved on the outside of the plunger rod 2, a docking circular opening being provided in the middle of the top end of the nylon dust cover 3, the cross-section of the nylon dust cover 3 being a U-shaped structure, and the nylon dust cover 3 being a circular structure when viewed from above.

[0019] The cross-section of the docking circular opening at the top of the nylon dust cover 3 is an arc-shaped structure, and a snap-on mounting groove 4 is opened on the upper end of the outer periphery of the plunger rod 2. The snap-on mounting groove 4 for mounting the nylon dust cover 3 has a snap-on mounting opening and an elastic interference fit, which fully interferes with the snap-on mounting groove 4 opened at the top of the plunger rod 2 to prevent condensed water from leaking into the inside of the nylon dust cover 3 and corroding the plunger rod 2.

[0020] The buckle mounting groove 4 is annular in structure, and the nylon dust cover 3 is made of nylon;

[0021] An air hole 5 is provided in the middle of the upper left end of the nylon dust cover 3. The air hole 5 is inclined. The downwardly inclined air hole 5 prevents the air pressure generated during movement from causing the nylon dust cover 3 to fall off or break out of the dust seal installed below. At the same time, the downwardly inclined design of the outer opening can effectively prevent condensed water from flowing into the inside of the nylon dust cover 3.

[0022] The upper end of the nylon dust cover 3 is designed in a sloped manner, so that the condensed water can flow down quickly to prevent stagnation and corrosion of the plunger rod 2;

[0023] A docking ring groove 6 is provided at the upper end of the exterior of the nitrogen cylinder 1, a dustproof sealing ring 7 is installed in the inner cavity of the docking ring groove 6, and elastic lips 8 are installed around the exterior of the dustproof sealing ring 7. This specially designed mounting and fixing structure can effectively prevent falling off and rolling when installed in conjunction with the nitrogen cylinder 1. The elastic lip 8 can fully contact the nylon dust cover 3 when in conjunction with it, preventing deposited oxide scale and other dust from being sucked back into the nylon dust cover 3 to damage the nitrogen cylinder seal.

[0024] Working principle: During use, the utility model forms a physical barrier by fitting the nylon dust cover 3 onto the upper end of the nitrogen cylinder 1 and covering the outside of the plunger rod 2, and clamping and installing it through the snap-fit mounting groove 4 processed on the top end of the nitrogen spring plunger rod. It can effectively block the oxide scale and condensed water generated during the operation of the hot pressing mold and prevent them from entering the interior of the spring.

[0025] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dustproof mechanism for a nitrogen spring, comprising a nitrogen cylinder (1), characterized in that: A plunger rod (2) is movably mounted on the top of the nitrogen cylinder (1). A nylon dust cover (3) is provided on the upper end of the nitrogen cylinder (1). The nylon dust cover (3) is fitted onto the outside of the plunger rod (2). A docking circular opening is provided at the middle of the top of the nylon dust cover (3). The cross section of the nylon dust cover (3) is a U-shaped structure, and the nylon dust cover (3) is a circular structure when viewed from above.

2. The dust-proof mechanism for a nitrogen gas spring according to claim 1, characterized in that: The cross section of the butt-jointed circular opening at the top end of the nylon dust cover (3) is an arc-shaped structure, and buckle mounting grooves (4) are provided on the upper end of the outer periphery of the plunger rod (2).

3. The dust-proof mechanism for a nitrogen gas spring according to claim 2, characterized in that: The buckle mounting groove (4) is annular in structure, and the nylon dust cover (3) is made of nylon.

4. The dust-proof mechanism for a nitrogen gas spring according to claim 1, characterized in that: A vent hole (5) is provided in the middle of the upper left end of the nylon dust cover (3), and the vent hole (5) is in an inclined structure.

5. The dust-proof mechanism for a nitrogen gas spring according to claim 1, characterized in that: The upper end of the nylon dust cover (3) is designed to be sloped.

6. The dust-proof mechanism for a nitrogen gas spring according to claim 1, characterized in that: A docking ring groove (6) is provided at the upper end of the exterior of the nitrogen cylinder (1), a dustproof sealing ring (7) is installed in the inner cavity of the docking ring groove (6), and elastic lips (8) are installed around the exterior of the dustproof sealing ring (7).

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