Stroke-adjustable buffer type air cylinder

Abstract

The stroke-adjustable buffering type air cylinder comprises an air cylinder body, an adjusting assembly and a buffering assembly, and the air cylinder body comprises piston rods, sealing pistons, a front piston, a rear piston, a front end cover and a rear end cover which are arranged in the air cylinder body and at the two ends of the air cylinder body. According to the stroke-adjustable buffer type air cylinder, the extension rod is movably installed in the piston rod in the air cylinder, the length of the extension rod can be adjusted in an extension mode according to using requirements, and therefore the total stroke of the piston rod can be conveniently adjusted, and after the extension rod in the piston rod is adjusted, the two ends of the extension rod are located and clamped in the clamping columns at the two ends, and the stroke of the piston rod is adjusted. Meanwhile, a front buffering ring and a front buffering cushion which are correspondingly installed between a front piston and a front end cover in the air cylinder and a rear buffering ring and a rear buffering cushion which are correspondingly installed between a rear piston and a rear end cover can also buffer the piston rod moving in the air cylinder in a telescopic mode in the reciprocating stretching and retracting process.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinders, in particular to a stroke-adjustable buffer-type cylinder. Background Art

[0002] A cylinder refers to a cylindrical metal part that guides the piston to perform linear reciprocating motion in the cylinder. The cylinder is composed of a cylinder barrel, end cover, piston, piston rod and seals. The air converts thermal energy into mechanical energy through expansion in the engine cylinder; the gas is compressed by the piston in the compressor cylinder to increase the pressure.

[0003] Existing buffer cylinders, such as a cylinder with a new buffer ring disclosed in publication number CN210829962U, have the advantage of avoiding excessive dust accumulation, thereby indirectly increasing the service life of the cylinder. However, the piston rod in this cylinder has an integrated structure, which makes it inconvenient to flexibly adjust its stroke length. For this reason, we propose a buffer cylinder with adjustable stroke. Utility Model Content

[0004] The main purpose of the utility model is to provide a stroke-adjustable buffer-type cylinder, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A stroke-adjustable buffer-type cylinder comprises a cylinder, an adjustment component and a buffer component. The cylinder comprises a piston rod inside and at both ends, a sealing piston, a front piston, a rear piston, a front cover and a rear cover. The adjustment component comprises an extension rod movably installed in the piston rod, and a notch opened on the outer side of the top of the piston rod. External mounting holes are opened through the piston rods at both ends of the notch. A plurality of groups of internal mounting holes are arranged and opened through the extension rod. Blocks are also installed on both sides of the notch, and a clamping column is fixedly installed at the center of the inner end of the clamping block.

[0007] Preferably, the clamping columns are matched with the outer mounting hole and the inner mounting hole, and the diameters of the outer mounting hole and the inner mounting hole are the same.

[0008] Preferably, the adjustment assembly further comprises an external thread provided on the piston rod at the lower end of the notch, and a nut threadedly connected and installed at the outer end of the external thread.

[0009] Preferably, the adjustment assembly further comprises binding strips fixedly mounted on both sides of the piston rod, and binding grooves matching the binding strips and provided on both sides of the extension rod.

[0010] Preferably, the buffer assembly includes a front buffer ring and a front buffer pad which are fixedly mounted on the front end of the front piston and the inner end of the front end cover respectively.

[0011] Preferably, the buffer assembly further comprises a rear buffer ring and a rear buffer pad which are fixedly mounted on the rear end of the rear piston and the inner end of the rear end cover respectively.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the utility model, the extension rod movably installed in the piston rod of the cylinder can be extended and adjusted in length according to the use requirements, so as to conveniently adjust the total stroke of the piston rod, and after the extension rod in the piston rod is adjusted, its two ends will be positioned and engaged in the clamping columns at both ends, so as to ensure the stability and supporting strength of the extension rod during use after adjustment;

[0014] 2. In the utility model, the front buffer ring and the front buffer pad installed correspondingly between the front piston and the front end cover in the cylinder, and the rear buffer ring and the rear buffer pad installed correspondingly between the rear piston and the rear end cover can also provide buffering for the reciprocating telescopic piston rod in the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a disassembly diagram of the extension rod of the utility model;

[0017] Figure 3 For this utility model Figure 2 A magnified view of middle;

[0018] Figure 4 It is a side sectional view of the utility model.

[0019] Reference numerals:

[0020] 100, cylinder; 101, piston rod; 102, sealing piston; 103, front piston; 104, rear piston; 105, front end cover; 106, rear end cover;

[0021] 200, adjustment assembly; 201, extension rod; 202, notch; 203, external mounting hole; 204, internal mounting hole; 205, clamping block; 206, clamping column; 207, external thread; 208, nut; 209, restraining strip; 210, restraining groove;

[0022] 300, buffer assembly; 301, front buffer ring; 302, front buffer pad; 303, rear buffer ring; 304, rear buffer pad. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] Embodiment 1:

[0025] like Figure 1-3 As shown, this embodiment provides a stroke-adjustable buffer cylinder, including a cylinder 100, an adjustment component 200 and a buffer component 300. The cylinder 100 includes a piston rod 101 inside and at both ends thereof, a sealing piston 102, a front piston 103, a rear piston 104, a front end cover 105 and a rear end cover 106. The adjustment component 200 includes an extension rod 201 movably installed in the piston rod 101, and a notch 202 opened on the outer side of the top of the piston rod 101. External mounting holes 203 are opened through the piston rod 101 at both ends of the notch 202. A plurality of groups of internal mounting holes 204 are arranged and opened through the extension rod 201. The notch 202 Blocks 205 are also mounted on both sides, and a clamping column 206 is fixedly mounted at the center of the inner end of the block 205. The clamping column 206 matches the outer mounting hole 203 and the inner mounting hole 204, and the diameters of the outer mounting hole 203 and the inner mounting hole 204 are the same. The adjustment component 200 also includes an external thread 207 provided on the piston rod 101 at the lower end of the notch 202, and a nut 208 threadedly connected and installed at the outer end of the external thread 207. The adjustment component 200 also includes a binding strip 209 fixedly mounted on both sides of the piston rod 101, and a binding groove 210 provided on both sides of the extension rod 201 and matching with the binding strip 209.

[0026] Specifically, the cylinder 100 refers to a cylindrical metal part that guides the piston rod 101 to perform linear reciprocating motion in the cylinder. The extension rod 201 movably installed in the piston rod 101 in the cylinder 100 can be extended and adjusted in length according to the use requirements, so as to conveniently adjust the total stroke of the piston rod 101. After the extension rod 201 in the piston rod 101 is adjusted, its two ends will be positioned and engaged in the clamping columns 206 at both ends, so as to ensure the stability and supporting strength of the extension rod 201 during use after adjustment. The multiple groups of inner mounting holes 204 opened at the upper end of the extension rod 201 are mainly used for the extension rod 201. After adjustment, a snap-fit ​​fixation is formed between the inner mounting hole 204 and the clamping column 206. The nut 208 installed at the outer end of the outer thread 207 on the outer side of the piston rod 101 is mainly used for rotating the nut 208 to the outer end of the notch 202, so as to press and fix the clamping block 205 on both sides of the notch 202 to ensure that the clamping column 206 at the inner end of the clamping block 205 is stably clamped in the outer mounting hole 203 and the inner mounting hole 204. The restraining strips 209 fixedly installed on both sides of the piston rod 101 are mainly used for restraining and positioning the position of the extension rod 201, thereby avoiding the problem of its rotation during extension adjustment and inconvenience in its snap-fit ​​fixation.

[0027] Embodiment 2:

[0028] Based on the first embodiment, Figure 4As shown, the buffer assembly 300 includes a front buffer ring 301 and a front buffer pad 302 fixedly installed at the front end of the front piston 103 and the inner end of the front cover 105 respectively, and the buffer assembly 300 also includes a rear buffer ring 303 and a rear buffer pad 304 fixedly installed at the rear end of the rear piston 104 and the inner end of the rear cover 106 respectively.

[0029] Specifically, the front buffer ring 301 and the front buffer pad 302 installed correspondingly between the front piston 103 and the front end cover 105 in the cylinder 100, and the rear buffer ring 303 and the rear buffer pad 304 installed correspondingly between the rear piston 104 and the rear end cover 106 can also provide buffering for the reciprocating telescopic piston rod 101 in the cylinder 100.

[0030] The working principle and use process of this utility model:

[0031] When the extension rod 201 in the piston rod 101 on the cylinder 100 is used for stroke adjustment, the nut 208 at the outer end of the external thread 207 is first screwed down to make the nut 208 move down to the lower end of the notch 202. At this time, the blocks 205 and the clamping columns 206 on both sides of the notch 202 can be removed. After the blocks 205 and the clamping columns 206 on both sides are removed, the extension rod 201 in the piston rod 101 can be telescopically adjusted to make the extension rod 201 move in the restraint of the restraint strips 209 on both sides. After the extension rod 201 is extended and adjusted, the extension rod 201 is first fine-tuned to make the inner mounting hole 204 in the extension rod 201 align with the outer mounting holes 203 on both sides of the notch 202. Afterwards, the blocks 205 on both sides of the notch 202 can be reinstalled so that the posts 206 at the inner ends of the blocks 205 are both engaged with the outer mounting holes 203 and the inner mounting holes 204. At this time, the nut 208 is re-tightened so that the nut 208 is constrained to the outer ends of the blocks 205. This conveniently completes the stroke adjustment and fixation of the extension rod 201 in the piston rod 101. At the same time, when the cylinder 100 is in use, the front buffer ring 301 and the front buffer pad 302 correspondingly installed between the front piston 103 and the front end cover 105 and the rear buffer ring 303 and the rear buffer pad 304 correspondingly installed between the rear piston 104 and the rear end cover 106 can also ensure that the piston rod 101 that telescopes and moves in the cylinder 100 has a buffering effect.

[0032] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A stroke-adjustable buffer-type cylinder, comprising a cylinder (100), an adjustment assembly (200) and a buffer assembly (300), wherein the cylinder (100) comprises a piston rod (101) inside and at both ends thereof, a sealing piston (102), a front piston (103), a rear piston (104), a front end cover (105) and a rear end cover (106), characterized in that: The adjustment assembly (200) comprises an extension rod (201) movably installed in the piston rod (101), and a notch (202) provided on the outer side of the top of the piston rod (101); external mounting holes (203) are provided through the piston rod (101) at both ends of the notch (202); a plurality of groups of internal mounting holes (204) are arranged and provided through the extension rod (201); clamping blocks (205) are also installed on both sides of the notch (202); and a clamping column (206) is also fixedly installed at the center of the inner end of the clamping block (205).

2. A stroke-adjustable buffer cylinder according to claim 1, characterized in that: The clamping columns (206) are matched with the outer mounting hole (203) and the inner mounting hole (204), and the outer mounting hole (203) and the inner mounting hole (204) have the same diameter.

3. A stroke-adjustable buffer cylinder according to claim 1, characterized in that: The adjustment assembly (200) further comprises an external thread (207) provided on the piston rod (101) at the lower end of the notch (202), and a nut (208) threadedly connected and installed at the outer end of the external thread (207).

4. The stroke-adjustable buffer cylinder according to claim 1, characterized in that: The adjustment assembly (200) further comprises binding strips (209) fixedly installed on both sides of the piston rod (101), and binding grooves (210) provided on both sides of the extension rod (201) and matching with the binding strips (209).

5. The stroke-adjustable buffer cylinder according to claim 1, characterized in that: The buffer assembly (300) comprises a front buffer ring (301) and a front buffer pad (302) which are respectively fixedly mounted on the front end of the front piston (103) and the inner end of the front cover (105).

6. The stroke-adjustable buffer cylinder according to claim 1, characterized in that: The buffer assembly (300) further comprises a rear buffer ring (303) and a rear buffer pad (304) which are respectively fixedly mounted on the rear end of the rear piston (104) and the inner end of the rear end cover (106).

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