Compact nitrogen spring buffer

Abstract

The utility model discloses a compact nitrogen spring buffer which comprises a cylinder barrel and a base, a piston rod is inserted in the cylinder barrel in a sliding mode, a buffer block is arranged in the cylinder barrel, a plurality of buffer cavities are formed in the buffer block, buffer rods are connected in the buffer cavities in a sliding mode, and bottom rings are arranged at the bottom ends of the buffer rods. A first buffer spring connected with the buffer rod is arranged on the inner wall of the buffer cavity. When the nitrogen spring buffer is used, the piston rod can move towards the top end of the cylinder barrel, elastic force of the first buffer spring and the second buffer spring has a buffer effect on the piston rod, damage caused by collision between the piston rod and the inner wall of the cylinder barrel can be prevented when a set stroke goes wrong, and collision sound generated by collision is also avoided. And the base length of the cylinder barrel is shorter, so that the motion stroke of the piston rod is shorter, and the nitrogen spring buffer is a compact nitrogen spring buffer.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen spring buffers, in particular to a compact nitrogen spring buffer. Background Art

[0002] The nitrogen spring buffer is a new type of elastic component that uses high-pressure nitrogen as the working medium. It is small in size, has high elastic force, long stroke, stable operation, precision manufacturing, and long service life. It can be used to manufacture tasks that are difficult to complete with conventional elastic components such as metal springs, rubber and air cushions. It simplifies mold design and manufacturing, facilitates mold installation and adjustment, extends mold service life, and ensures stable product quality.

[0003] In the prior art, when the nitrogen spring buffer is working, the piston rod will move. When there is a problem with the set stroke, the piston rod will collide with the cylinder. The collision will cause damage to both the cylinder and the piston rod, and will also produce a collision sound. Therefore, there is an urgent need to design a compact nitrogen spring buffer to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a compact nitrogen spring buffer to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A compact nitrogen spring buffer comprises a cylinder and a base, wherein a piston rod is slidably inserted into the interior of the cylinder, a buffer block is provided inside the cylinder, and a plurality of buffer cavities are opened inside the buffer block, a buffer rod is slidably connected to the interior of the buffer cavity, and a bottom ring is provided at the bottom end of the plurality of buffer rods, a buffer spring 1 connected to the buffer rod is provided on the inner wall of the buffer cavity, and a buffer spring 2 connected to the bottom ring is provided on the outer wall of the bottom of the buffer block, and the buffer spring 2 is sleeved on the outside of the buffer rod.

[0007] Furthermore, a top cover is threadedly inserted into the top of the cylinder, and a scraper ring is provided on the outer wall of the top of the top cover. The scraper ring fits against the outer wall of the piston rod, and the top outer wall of the buffer block contacts the bottom outer wall of the top cover.

[0008] Furthermore, a sealing ring is provided on the outer wall of the piston rod, and a folding sleeve connected to the sealing ring is provided on the outer wall of the bottom of the buffer block, and the folding sleeve is sleeved on the outside of the piston rod.

[0009] Furthermore, a sealing ring is provided on the inner wall of the top cover and fits with the outer wall of the piston rod, and a piston pad is provided on the outer wall of the bottom end of the piston rod and fits with the inner wall of the cylinder.

[0010] Furthermore, the cylinder is inserted into the inside of the base, mounting blocks are provided on the outer walls on both sides of the cylinder, and a socket is provided on the outer wall of the bottom of the mounting block, the top of the base is respectively provided with a mounting groove and a through groove, and the socket is inserted into the inside of the mounting groove.

[0011] Furthermore, the interior of the mounting block is slidably connected to an insertion block, and the insertion block is inserted into the interior of the socket after passing through the through slot. A fixing spring connected to the insertion block is provided on the inner wall of the top of the mounting block, and a pulling block extending outside the mounting block is provided on the outer wall of the top of the insertion block.

[0012] Furthermore, an air valve is provided on the outer wall of one side of the cylinder, and a through hole is provided on the outer wall of the base, and the specifications of the through hole are adapted to the specifications of the air valve.

[0013] In the above technical solution, the utility model provides a compact nitrogen spring buffer,

[0014] (1) By arranging a cylinder, a piston rod, a buffer block, a buffer chamber, a buffer rod, a buffer spring 1 and a buffer spring 2, when the nitrogen spring buffer is used, the piston rod will move toward the top of the cylinder, and the elastic force of the buffer spring 1 and the buffer spring 2 has a buffering effect on the piston rod, which can prevent the piston rod from colliding with the inner wall of the cylinder and causing damage when there is a problem with the set stroke, and also avoid the collision sound caused by the collision. In addition, the base length of the cylinder is short, so that the movement stroke of the piston rod is also short, making the nitrogen spring buffer a compact nitrogen spring buffer;

[0015] (2) By providing the top cover, scraper ring, sealing ring, sealing ring, folding sleeve and piston pad, the scraper ring can remove impurities on the piston rod and prevent the impurities from entering the interior of the cylinder and affecting the sealing performance of the cylinder. At the same time, the sealing ring, folding sleeve, sealing ring and piston pad can improve the sealing performance of the cylinder.

[0016] (3) Through the provided base, mounting block, plug-in block, socket, lifting block and fixing spring, the plug-in block can be inserted into the through slot, and the elastic force of the fixing spring can push the plug-in block downward. After the plug-in block passes through the through slot, it is plugged into the inside of the socket, thereby fixing the cylinder on the base and realizing the function of easy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1The present invention provides a three-dimensional structural diagram of a compact nitrogen spring buffer embodiment.

[0019] Figure 2 A schematic diagram of the internal structure of a compact nitrogen spring buffer embodiment of the present utility model is provided.

[0020] Figure 3 This is a schematic diagram of the buffer chamber structure provided by an embodiment of a compact nitrogen spring buffer of the utility model.

[0021] Figure 4 This is a schematic diagram of the mounting block structure provided in an embodiment of a compact nitrogen spring buffer of the present utility model.

[0022] Description of reference numerals:

[0023] 1. Cylinder; 2. Piston rod; 3. Buffer block; 4. Buffer chamber; 5. Buffer rod; 6. Buffer spring 1; 7. Bottom ring; 8. Buffer spring 2; 9. Top cover; 10. Scraper ring; 11. Sealing ring; 12. Sealing ring; 13. Folding sleeve; 14. Piston pad; 15. Base; 16. Mounting block; 17. Insert block; 18. Socket; 19. Pulling block; 20. Fixing spring; 21. Air valve; 22. Through hole; 23. Mounting slot; 24. Through slot. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-4 As shown, a compact nitrogen spring buffer provided by an embodiment of the present invention includes a cylinder 1 and a base 15, a piston rod 2 is slidably inserted into the interior of the cylinder 1, a buffer block 3 is provided inside the cylinder 1, and a plurality of buffer cavities 4 are opened inside the buffer block 3, a buffer rod 5 is slidably connected to the interior of the buffer cavity 4, a bottom ring 7 is provided at the bottom end of the plurality of buffer rods 5, a buffer spring 1 6 connected to the buffer rod 5 is provided on the inner wall of the buffer cavity 4, and a buffer spring 2 8 connected to the bottom ring 7 is provided on the outer wall of the bottom of the buffer block 3, and the buffer spring 2 8 is sleeved on the outside of the buffer rod 5.

[0026] The utility model provides a compact nitrogen spring buffer, including a cylinder 1 and a base 15, a piston rod 2 is slidably inserted into the interior of the cylinder 1, a buffer block 3 is provided inside the cylinder 1, and a plurality of buffer chambers 4 are opened inside the buffer block 3, a buffer rod 5 is slidably connected to the interior of the buffer chamber 4, a bottom ring 7 is provided at the bottom end of the plurality of buffer rods 5, a buffer spring 1 6 connected to the buffer rod 5 is provided on the inner wall of the buffer chamber 4, and a buffer spring 2 8 connected to the bottom ring 7 is provided on the outer wall of the bottom of the buffer block 3, the buffer spring 2 8 is sleeved on the outside of the buffer rod 5, and the piston rod 2 moves upward when it moves. When there is a problem with the stroke of the nitrogen spring buffer, the elastic force of the buffer spring 1 6 and the buffer spring 2 8 can buffer the piston rod 2, and can prevent the piston rod 2 from colliding with the inner wall of the cylinder 1.

[0027] By arranging a cylinder, a piston rod, a buffer block, a buffer chamber, a buffer rod, a buffer spring 1 and a buffer spring 2, when the nitrogen spring buffer is in use, the piston rod 2 will move toward the top end of the cylinder 1, and the elastic force of the buffer spring 1 6 and the buffer spring 2 8 has a buffering effect on the piston rod 2. When there is a problem with the set stroke, it can prevent the piston rod 2 from colliding with the inner wall of the cylinder 1 to cause damage, and also avoid the collision sound caused by the collision. In addition, the base length of the cylinder 1 is short, so that the movement stroke of the piston rod 2 is also short, making the nitrogen spring buffer a compact nitrogen spring buffer.

[0028] In one embodiment provided by the present invention, Figure 1 and Figure 2 As shown, a top cover 9 is threadedly inserted into the top of the cylinder 1, and a scraper ring 10 is provided on the outer wall of the top of the top cover 9. The scraper ring 10 fits against the outer wall of the piston rod 2, and the top outer wall of the buffer block 3 contacts the bottom outer wall of the top cover 9. The scraper ring 10 can scrape off impurities on the piston rod 2.

[0029] In another embodiment provided by the present invention, Figure 2 As shown, a sealing ring 12 is provided on the outer wall of the piston rod 2, and a folding sleeve 13 connected to the sealing ring 12 is provided on the outer wall of the bottom of the buffer block 3. The folding sleeve 13 is sleeved on the outside of the piston rod 2 to increase the sealing performance of the cylinder 1.

[0030] In another embodiment provided by the present invention, Figure 2 As shown, a sealing ring 11 is provided on the inner wall of the top cover 9 and fits with the outer wall of the piston rod 2, and a piston pad 14 is provided on the outer wall of the bottom end of the piston rod 2 and fits with the inner wall of the cylinder 1. The sealing ring 11 fits with the outer wall of the piston rod 2, and the piston pad 14 fits with the inner wall of the cylinder 1, which can improve the sealing performance of the cylinder 1.

[0031] In one embodiment provided by the present invention, Figure 1 and Figure 4As shown, the cylinder 1 is inserted into the inside of the base 15, and mounting blocks 16 are provided on the outer walls on both sides of the cylinder 1, and a socket 18 is provided on the outer wall at the bottom of the mounting block 16. The top of the base 15 is respectively provided with a mounting groove 23 and a through groove 24, and the socket 18 is inserted into the inside of the mounting groove 23, and the mounting groove 23 is used to install the cylinder 1.

[0032] In another embodiment provided by the present invention, Figure 4 As shown, the internal sliding connection of the mounting block 16 is provided with an insert block 17, and the insert block 17 is inserted into the interior of the socket 18 after passing through the through slot 24. A fixing spring 20 connected to the insert block 17 is provided on the inner wall of the top of the mounting block 16, and a lifting block 19 extending to the outside of the mounting block 16 is provided on the outer wall of the top of the insert block 17. The insert block 17 can be lifted upward by the lifting block 19.

[0033] In another embodiment provided by the present invention, Figure 1 and Figure 2 As shown, an air valve 21 is provided on the outer wall of one side of the cylinder 1, and a through hole 22 is provided on the outer wall of the base 15. The specifications of the through hole 22 are adapted to the specifications of the air valve 21. The through hole 22 is used to connect the air valve 21 with an external nitrogen filling device.

[0034] Working principle: the base 15 can be pre-installed in the required position, the lifting block 19 is lifted upward, and then the cylinder 1 is inserted into the inside of the base 15, and the socket 18 is inserted into the inside of the mounting groove 23, the cylinder 1 is rotated, and the socket 18 moves toward the inside of the mounting groove 23, and the lifting block 19 is released. The elastic force of the fixing spring 20 will push the plug 17 to move downward through the through groove 24 and then be inserted into the inside of the socket 18, and the cylinder 1 can be installed on the base 15, realizing the function of facilitating the installation and disassembly of the cylinder 1. When the nitrogen spring buffer is in normal use, the piston rod 2 will move toward the top of the cylinder 1. The elastic force of the buffer spring 1 6 and the buffer spring 2 8 has a buffering effect on the piston rod 2. When there is a problem with the set stroke, it can prevent the piston rod 2 from colliding with the inner wall of the cylinder 1 and causing damage, and also avoid the collision sound caused by the collision, thereby realizing the protection function, and the sealing ring 11 is in contact with the inner wall of the cylinder 1, the folding sleeve 13 is arranged on the outside of the piston rod 2, and the piston pad 14 is in contact with the inner wall of the cylinder 1, which can improve the sealing of the cylinder 1.

[0035] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A compact nitrogen spring buffer, comprising a cylinder (1) and a base (15), characterized in that: The cylinder (1) is internally slidably connected with a piston rod (2), the cylinder (1) is internally provided with a buffer block (3), and the buffer block (3) is internally provided with a plurality of buffer cavities (4), the buffer cavity (4) is internally slidably connected with a buffer rod (5), the bottom ends of the plurality of buffer rods (5) are provided with a bottom ring (7), the inner wall of the buffer cavity (4) is provided with a buffer spring (6) connected to the buffer rod (5), and the outer wall of the bottom of the buffer block (3) is provided with a buffer spring (8) connected to the bottom ring (7), and the buffer spring (8) is sleeved on the outside of the buffer rod (5).

2. A compact nitrogen spring buffer according to claim 1, characterized in that: The top of the cylinder (1) is threadedly connected to a top cover (9), and a scraper ring (10) is provided on the outer wall of the top of the top cover (9). The scraper ring (10) fits the outer wall of the piston rod (2), and the top outer wall of the buffer block (3) contacts the bottom outer wall of the top cover (9).

3. A compact nitrogen spring buffer according to claim 2, characterized in that: A sealing ring (12) is provided on the outer wall of the piston rod (2), and a folding sleeve (13) connected to the sealing ring (12) is provided on the outer wall of the bottom of the buffer block (3). The folding sleeve (13) is sleeved on the outside of the piston rod (2).

4. A compact nitrogen spring buffer according to claim 3, characterized in that: A sealing ring (11) is provided on the inner wall of the top cover (9) and is in contact with the outer wall of the piston rod (2), and a piston pad (14) is provided on the outer wall of the bottom end of the piston rod (2) and is in contact with the inner wall of the cylinder (1).

5. A compact nitrogen spring buffer according to claim 4, characterized in that: The cylinder (1) is inserted into the interior of the base (15), and mounting blocks (16) are provided on the outer walls of both sides of the cylinder (1), and a socket (18) is provided on the outer wall of the bottom of the mounting block (16). The top of the base (15) is respectively provided with a mounting groove (23) and a through groove (24), and the socket (18) is inserted into the interior of the mounting groove (23).

6. The compact nitrogen spring buffer according to claim 5, characterized in that: The interior of the mounting block (16) is slidably connected to an insert block (17), and the insert block (17) is inserted into the interior of the socket (18) after passing through the through slot (24). A fixing spring (20) connected to the insert block (17) is provided on the inner wall of the top of the mounting block (16), and a lifting block (19) extending outside the mounting block (16) is provided on the outer wall of the top of the insert block (17).

7. The compact nitrogen spring buffer according to claim 1, characterized in that: An air valve (21) is provided on the outer wall of one side of the cylinder (1), and a through hole (22) is provided on the outer wall of the base (15). The specifications of the through hole (22) are compatible with the specifications of the air valve (21).

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