Plunger rod anti-loosening structure of nitrogen spring

Abstract

The utility model relates to a plunger rod anti-loosening structure of a nitrogen spring, which comprises a spring cylinder body, a spring plunger is movably connected in the spring cylinder body, the bottom of the spring plunger is provided with a fitting groove, a dustproof strip is fixedly connected in the spring cylinder body, and the top of the spring cylinder body is movably connected with a connecting seat. According to the plunger rod anti-loosening structure of the nitrogen spring, by arranging the anti-loosening structure, the spring plunger cannot rotate, the anti-loosening effect of the spring plunger in the spring cylinder body is achieved, the total length of the nitrogen spring is guaranteed, and the forming quality of a mold is more stable; meanwhile, the spring plunger can not deform and break when the pressure borne by the spring plunger is larger than a set value, high-pressure nitrogen in the spring cylinder body can be released along the inner wall of the spring cylinder body, and therefore pressure relief protection can be achieved, the use safety of the nitrogen spring is improved, and safety accidents caused by the fact that the plunger of the nitrogen spring breaks due to impact and flies out are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen spring plunger rod loosening prevention, in particular to a nitrogen spring plunger rod loosening prevention structure. Background Art

[0002] With the vigorous development of the automobile and home appliance industries, the application of nitrogen springs in stamping dies and large plastic molds has become more and more extensive, and the requirements for the stability and service life of nitrogen springs have become higher and higher, thus putting forward higher requirements on the wear resistance and smoothness of the plunger rod (piston rod), the working part of the nitrogen spring.

[0003] Conventional elastic elements used in the prior art have the problem that if the nitrogen spring is not fixed properly during the process of being pressed down, it will easily tilt or slip, which will cause the plunger to suddenly lose external pressure, and the high-pressure nitrogen in the cylinder will produce a strong reaction force to make the plunger move upward quickly. In the structural design of the traditional nitrogen spring, the bottom end of the plunger is in a smaller cross-section. When the plunger impacts the bottom end of the fixed end cover, the plunger will break and fly out due to excessive force, causing damage to the mold above the plunger or injury to personnel. For this reason, we propose a plunger rod anti-loosening structure for a nitrogen spring. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a plunger rod anti-loosening structure for a nitrogen spring, which has the advantages of tight connection between the plunger and the elastic element and high movement stability, and solves the problem that excessive force may cause the plunger to break and fly out.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plunger rod anti-loosening structure of a nitrogen spring, comprising a spring cylinder, a spring plunger is movably connected inside the spring cylinder, a fitting groove is provided at the bottom of the spring plunger, a dustproof strip is fixedly connected inside the spring cylinder, and an anti-loosening structure is fixedly connected to the top of the spring cylinder;

[0006] The anti-loosening structure includes a connecting seat, the top of the spring cylinder is movably connected to the connecting seat, the top of the connecting seat is fixedly connected to a receiving cabin, the outer side of the receiving cabin is movably connected to a clamp, the outer side of the clamp is provided with a connecting groove, and the inside of the connecting groove is movably connected to an anti-loosening bolt.

[0007] Furthermore, the interior of the spring cylinder body is fixedly connected to a cylinder base, the top of the cylinder base is provided with a mounting hole, the bottom of the cylinder base is provided with a bottom groove, the interior of the cylinder base is fixedly connected to a static sealing belt, the interior of the mounting hole is movably connected to a screw plug, and the top of the screw plug is movably connected to an inflation valve.

[0008] Furthermore, a groove is provided on the inner side of the spring cylinder, and a dustproof strip is fixedly installed inside the groove, and the dustproof strip is made of virgin rubber.

[0009] Furthermore, the receiving cabin is in the form of a column with an opening, and a receiving groove is provided on its outer side. The outer side of the receiving cabin is movably connected to two relatively movably connected clamps, an adjustment hole is provided inside the connection groove, and the thread inside the adjustment hole is adapted and connected to the thread on the outer surface of the anti-loosening bolt.

[0010] Furthermore, a thread groove is provided on the inner side of the mounting hole, and the threads inside the thread groove are matched with the threads on the outer surface of the screw plug, and the inflation valve is connected to the spring cylinder body through the screw plug and the mounting hole.

[0011] Furthermore, an inflation valve is movably connected inside the mounting hole, and an air receiving port is provided at the bottom of the screw plug.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] 1. The anti-loosening structure of the plunger rod of the nitrogen spring prevents the spring plunger from rotating by setting an anti-loosening structure, thereby achieving the effect of preventing the spring plunger from loosening inside the spring cylinder, ensuring the total length of the nitrogen spring, and making the mold more stable in terms of molding quality. At the same time, the spring plunger will not deform or break when the pressure is greater than the set value, and the high-pressure nitrogen in the spring cylinder can be released along the inner wall of the spring cylinder, thereby achieving pressure relief protection, which improves the safety of the nitrogen spring, thereby preventing the plunger of the nitrogen spring from breaking and flying out due to impact and causing safety accidents.

[0014] 2. The plunger rod anti-loosening structure of the nitrogen spring can effectively control the charging and releasing of the airflow by setting a screw plug and an inflation valve, and adding an air connection port at the bottom of the screw plug, thereby reducing the occurrence rate of accidents. When gas leaks, the valve at the inflation valve can be closed to prevent further leakage of gas, thereby reducing the occurrence of accidents. At the same time, the gas flow rate can be adjusted at any time according to production needs, thereby better completing experiments or production work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall three-dimensional half-section exploded view of the utility model;

[0016] Figure 2 This is a three-dimensional exploded view of the anti-loosening structure of the utility model;

[0017] Figure 3 This is a front view of the overall appearance of the utility model.

[0018] In the figure: 1. Spring cylinder body; 2. Spring plunger; 3. Fitting groove; 4. Dustproof strip; 5. Anti-loosening structure; 501. Connecting seat; 502. Accommodation compartment; 503. Clamp; 504. Connecting groove; 505. Anti-loosening bolt; 6. Cylinder base; 7. Mounting hole; 8. Bottom groove; 9. Static sealing belt; 10. Screw plug; 11. Inflating valve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 In this embodiment, a plunger rod anti-loosening structure of a nitrogen spring comprises a spring cylinder 1, a spring plunger 2 is movably connected inside the spring cylinder 1, a fitting groove 3 is provided at the bottom of the spring plunger 2, a dustproof strip 4 is fixedly connected inside the spring cylinder 1, and an anti-loosening structure 5 is fixedly connected to the top of the spring cylinder 1;

[0021] The anti-loosening structure 5 includes a connecting seat 501, the top of the spring cylinder 1 is movably connected to the connecting seat 501, the top of the connecting seat 501 is fixedly connected to a receiving cabin 502, the outer side of the receiving cabin 502 is movably connected to a clamp 503, the outer side of the clamp 503 is provided with a connecting groove 504, and the inside of the connecting groove 504 is movably connected to an anti-loosening bolt 505.

[0022] In specific implementation, four receiving grooves are opened on the outside of the receiving cabin 502 and are equidistantly distributed around the circumference. The anti-loosening bolt 505 is connected to the receiving cabin 502 through the connecting groove 504 and the clamp 503. The inside of the receiving cabin 502 is movably connected with the spring plunger 2. When the spring plunger 2 moves and tilts inside the spring cylinder 1, the receiving cabin 502 can be tightened by tightening the anti-loosening bolt 505 (at this time, the two opposite clamps 503 squeeze and tighten the receiving cabin 502), so as to achieve the effect of loosening the spring plunger 2.

[0023] The gas connection port at the bottom of the screw plug 10 is connected to the input end of the inflation valve 11. The principle is to establish a connection with the external gas supply source through the gas connection port. At the same time, the inflation valve 11 shell can control the gas flow and pressure by adjusting the valve opening. When the valve opening increases, the gas flow increases and the air pressure in the pipeline decreases. When the valve opening decreases, the gas flow decreases and the air pressure in the pipeline increases.

[0024] When implementing, follow these steps:

[0025] 1) First, sleeve the connecting seat 501 onto the spring plunger 2 and align it with the piston hole on the top of the spring cylinder 1, and then thread the connecting seat 501 and the spring cylinder 1 together using external bolts;

[0026] 2) When the nitrogen spring is not fixed properly during the process of being pressed down and is prone to tilting or slipping, the containment chamber 502 is tightened by tightening the anti-loosening bolt 505 (at this time, the two opposite clamps 503 squeeze and tighten the containment chamber 502), so as to achieve the effect of loosening the spring plunger 2.

[0027] To sum up, the plunger rod anti-loosening structure of the nitrogen spring, by setting the anti-loosening structure 5, makes the spring plunger 2 unable to rotate, and realizes the effect of preventing the spring plunger 2 from loosening inside the spring cylinder 1, so that the total length of the nitrogen spring is guaranteed, and the molding quality of the mold is more stable. At the same time, the spring plunger 2 will not be deformed or broken when the pressure is greater than the set value, and the high-pressure nitrogen in the spring cylinder 1 can be released along the inner wall of the spring cylinder 1, so as to realize pressure relief protection, which improves the safety of the use of the nitrogen spring, thereby preventing the plunger of the nitrogen spring from breaking and flying out due to impact and causing safety accidents.

[0028] Furthermore, by setting the screw plug 10 and the inflation valve 11, adding a gas connection port at the bottom of the screw plug 10 can effectively control the charging and discharging of the airflow, reduce the occurrence rate of accidents, and when gas leaks, the valve at the inflation valve 11 can be closed to prevent the gas from continuing to leak, reduce the occurrence of accidents, and at the same time, the gas flow rate can be adjusted at any time according to production needs, so as to better complete experiments or production work.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plunger rod anti-loosening structure of a nitrogen spring, comprising a spring cylinder (1), characterized in that: The spring cylinder (1) is movably connected to a spring plunger (2), the bottom of the spring plunger (2) is provided with a fitting groove (3), the inside of the spring cylinder (1) is fixedly connected to a dustproof strip (4), and the top of the spring cylinder (1) is fixedly connected to an anti-loosening structure (5); The anti-loosening structure (5) comprises a connecting seat (501), the top of the spring cylinder (1) is movably connected to the connecting seat (501), the top of the connecting seat (501) is fixedly connected to a receiving cabin (502), the outer side of the receiving cabin (502) is movably connected to a clamp (503), the outer side of the clamp (503) is provided with a connecting groove (504), and the interior of the connecting groove (504) is movably connected to an anti-loosening bolt (505).

2. The plunger rod anti-loosening structure of a nitrogen spring according to claim 1, characterized in that: The spring cylinder body (1) is fixedly connected to a cylinder base (6) inside, a mounting hole (7) is provided at the top of the cylinder base (6), a bottom groove (8) is provided at the bottom of the cylinder base (6), a static sealing belt (9) is fixedly connected to the inside of the cylinder base (6), a screw plug (10) is movably connected to the inside of the mounting hole (7), and an inflation valve (11) is movably connected to the top of the screw plug (10).

3. The plunger rod anti-loosening structure of a nitrogen spring according to claim 1, characterized in that: A groove is provided on the inner side of the spring cylinder body (1), and a dustproof strip (4) is fixedly installed inside the groove. The dustproof strip (4) is made of virgin rubber.

4. The plunger rod anti-loosening structure of a nitrogen spring according to claim 1, characterized in that: The receiving chamber (502) is in the form of a column with an opening, and a receiving groove is provided on its outer side. Two relatively movably connected clamps (503) are movably connected to the outer side of the receiving chamber (502). An adjustment hole is provided inside the connection groove (504), and the thread inside the adjustment hole is adapted to and connected to the thread on the outer surface of the anti-loosening bolt (505).

5. The plunger rod anti-loosening structure of a nitrogen spring according to claim 2, characterized in that: A thread groove is provided on the inner side of the mounting hole (7), and the threads inside the thread groove are matched with the threads on the outer surface of the screw plug (10). The inflation valve (11) is connected to the spring cylinder body (1) via the screw plug (10) and the mounting hole (7).

6. The plunger rod anti-loosening structure of a nitrogen spring according to claim 2, characterized in that: An inflation valve (11) is movably connected inside the mounting hole (7), and an air receiving port is provided at the bottom of the screw plug (10).

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