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CN-224214473-U - Piston assembly of pneumatic rod

CN224214473UCN 224214473 UCN224214473 UCN 224214473UCN-224214473-U

Abstract

The utility model discloses a piston assembly of a pneumatic rod, which relates to the field of pneumatic rods and comprises a fixed cylinder, wherein the top end of the fixed cylinder is in threaded connection with a top cylinder, the bottom end of the fixed cylinder is in threaded connection with a bottom cylinder, the top cylinder and the bottom cylinder are both communicated with the inside of the fixed cylinder, a pneumatic telescopic rod is arranged in the fixed cylinder in a telescopic manner, the top end of the top cylinder is connected with a conical sleeve, when the pneumatic telescopic rod stretches upwards to retract into the fixed cylinder after being used, the outer side of the pneumatic telescopic rod rubs with a foam-rubber cushion to remove excessive dust and impurities on the outer side, the removed dust and impurities stay on the outer side of the conical sleeve, if part of dust enters the inside of the conical sleeve, the outer side of the pneumatic telescopic rod is scraped by a through hole of a supporting block, so that the carried dust and impurities fall into a discharge hole through a bevel edge of the supporting block and are discharged to the outside through the discharge hole.

Inventors

  • LIN FANGJIAN

Assignees

  • 苏州森姆斯精密机械有限公司

Dates

Publication Date
20260508
Application Date
20250411

Claims (7)

  1. 1. A piston assembly of a pneumatic rod is characterized by comprising a fixed cylinder (1), wherein the top end of the fixed cylinder (1) is in threaded connection with a top cylinder (3), the bottom end of the fixed cylinder (1) is in threaded connection with a bottom cylinder (4), the top cylinder (3) and the bottom cylinder (4) are communicated with the inside of the fixed cylinder (1), the pneumatic telescopic rod (2) is arranged in the fixed cylinder (1) in a telescopic manner, the top end of the top cylinder (3) is connected with a conical sleeve (9), the top end of the pneumatic telescopic rod (2) extends out of the conical sleeve (9), a cavity (11) is formed in the conical sleeve (9), the bottom end of the cavity (11) is communicated with the inside of the top cylinder (3), a sponge pad (10) is fixed at the top end of the inside of the conical sleeve (9), the inner ring of the sponge pad (10) is mutually attached to the outer side of the pneumatic telescopic rod (2), a supporting block (13) in a round table shape is fixed at the bottom end of the inside of the conical sleeve (9), a discharge hole (12) is formed in the outer side of the conical sleeve (9), and the bottom end of the supporting block (13) corresponds to the discharge hole (12).
  2. 2. The piston assembly of the pneumatic rod as set forth in claim 1, wherein the bottom end of the supporting block (13) is provided with a through hole for the pneumatic telescopic rod (2) to slide and extend out, and the through hole simultaneously penetrates through the top end of the supporting block (13).
  3. 3. The piston assembly of the pneumatic rod according to claim 1, wherein a piston member (6) is arranged on the outer side of the pneumatic telescopic rod (2), the piston member (6) is slidably arranged in the fixed cylinder (1), and a buffer pad (7) is fixed at the top end of the piston member (6).
  4. 4. A piston assembly of a pneumatic rod as set forth in claim 1, wherein the bottom end of the top cylinder (3) is fixed with an extending end (8), the inside of the extending end (8) and the inside of the top cylinder (3) are communicated with each other, and the extending end (8) extends into the inside of the fixed cylinder (1).
  5. 5. A piston assembly of a pneumatic rod as set forth in claim 4, wherein magnets are embedded in the bottom end of the extending end (8) and on the opposite side of the buffer pad (7), the two magnets are arranged in a repulsive manner, the magnets are arranged in a plurality, and the magnets are distributed at equal intervals around the centers of the corresponding extending end (8) and the buffer pad (7).
  6. 6. A piston assembly of a pneumatic rod as claimed in claim 1, wherein the outer sides of the bottom cylinder (4) and the top cylinder (3) are provided with external threads (5).
  7. 7. A piston assembly of a pneumatic rod according to claim 1, wherein the sponge cushion (10) is arranged in a ring shape, and the top end and the bottom end in the fixed cylinder (1) are respectively provided with internal threads for connecting the top cylinder (3) with the bottom cylinder (4) in a threaded manner.

Description

Piston assembly of pneumatic rod Technical Field The utility model relates to the field of pneumatic rods, in particular to a piston assembly of a pneumatic rod. Background A pneumatic lever is a device that works with gas pressure. The piston is driven to move by air source compressed air to generate the actuator of linear motion. Specifically, the working principle of the pneumatic rod is that compressed air is injected into the air cylinder to push the piston and the rod body connected with the piston to perform telescopic movement, so that mechanical action is realized. When the existing pneumatic rod is retracted, the dust and impurities are easily brought into the shell, so that the shell is blocked or blocked. Therefore, it is necessary to propose a new piston assembly for a pneumatic rod for solving the above-mentioned problems. Disclosure of utility model The utility model aims to provide a piston assembly of a pneumatic rod, which solves the problems that after the existing pneumatic rod stretches out, the stretching end can be contacted with the external environment, dust and impurities in the air are easy to adhere, and when the pneumatic rod retracts, the dust and the impurities are easy to be brought into a shell to cause blockage or generate blocking. The piston assembly of the pneumatic rod comprises a fixed cylinder, wherein the top end of the fixed cylinder is in threaded connection with a top cylinder, the bottom end of the fixed cylinder is in threaded connection with a bottom cylinder, the top cylinder and the bottom cylinder are communicated with the inside of the fixed cylinder, a pneumatic telescopic rod is arranged in the fixed cylinder in a telescopic manner, the top end of the top cylinder is connected with a conical sleeve, the top end of the pneumatic telescopic rod extends out of the conical sleeve, a cavity is formed in the conical sleeve, the bottom end of the cavity is communicated with the inside of the top cylinder, a foam-rubber cushion is fixed at the top end of the inside of the conical sleeve, the inner ring of the foam-rubber cushion is mutually attached to the outer side of the pneumatic telescopic rod, a supporting block in a circular truncated cone shape is fixed at the bottom end of the inside of the conical sleeve, a discharge hole is formed in the outer side of the conical sleeve, and the bottom end of the supporting block corresponds to the discharge hole. Preferably, the through hole for the sliding extension of the pneumatic telescopic rod is formed in the bottom end of the supporting block, and the through hole penetrates through the top end of the supporting block at the same time. Preferably, a piston member is arranged on the outer side of the pneumatic telescopic rod, the piston member is slidably arranged in the fixed cylinder, and a buffer pad is fixed on the top end of the piston member. Preferably, the bottom end of the top cylinder is fixed with an extending end, the inside of the extending end is communicated with the inside of the top cylinder, and the extending end extends into the inside of the fixed cylinder. Preferably, the magnets are embedded in the bottom end of the extending end and one opposite side of the buffer pad, the two magnets are arranged in a repulsive mode, the magnets are arranged in a plurality, and the magnets are distributed at equal intervals around the centers of the corresponding extending end and the buffer pad. Preferably, the outer sides of the bottom cylinder and the top cylinder are provided with external threads. Preferably, the sponge cushion is annular, and the top end and the bottom end inside the fixed cylinder are respectively provided with internal threads for the threaded connection of the top cylinder and the bottom cylinder. The pneumatic telescopic rod has the technical effects that when the pneumatic telescopic rod stretches upwards to be retracted into the fixed cylinder after being used, the outer side of the pneumatic telescopic rod can be rubbed with the sponge cushion to remove redundant dust and impurities on the outer side, the removed dust and impurities stay on the outer side of the conical sleeve, if part of dust enters the conical sleeve, the outer side of the pneumatic telescopic rod is scraped by the through hole of the supporting block, and the carried dust and impurities can fall into the discharge hole through the inclined edge of the supporting block and are discharged to the outside through the discharge hole. Further, the supporting block can increase the structural strength of the conical sleeve, and meanwhile, the stability of upward extension of the pneumatic telescopic rod can be maintained. Drawings FIG. 1 is a schematic view of the piston assembly of the pneumatic lever of the present utility model. FIG. 2 is a schematic view of the internal structure of the fixing barrel of the present utility model. Fig. 3 is an enlarged schematic view of fig. 1 at a in accordance with the prese