Piston rod type electric cylinder with noise reduction structure

Abstract

The piston rod type electric cylinder with the noise reduction structure comprises a driving assembly, a telescopic cylinder and a lubricating assembly, the front end of the driving assembly is fixedly connected with the rear end of the telescopic cylinder, the lubricating assembly used for lubricating and noise reduction is fixed in the front end of the telescopic cylinder, the driving assembly comprises a servo motor, a speed reducer and a coupler, and the servo motor is connected with the speed reducer. Compared with the prior art, the lubricating device has the advantages that by arranging the lubricating assembly, the smearing ring made of sponge can adsorb lubricating oil, and the lubricating oil is evenly smeared on the surface when making contact with the outer wall of the piston rod, so that the lubricating oil is evenly smeared, and the lubricating effect is good. And a thin oil film layer can be formed, so that the sliding friction of reciprocating motion of the piston rod is reduced, the noise of the whole equipment is prevented from being increased due to excessive friction after long-time use, and the purpose of reducing noise is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric cylinders, and in particular relates to a piston rod type electric cylinder with a noise reduction structure. Background Art

[0002] After prolonged operation, electric cylinders may generate mechanical noise as their internal cylinder expands and contracts due to dust adhering to its surface. This noise problem is particularly noticeable at high speeds. This noise is primarily due to mechanical friction. Without effective noise reduction designs, electric cylinder noise is not only disturbing to operators but can also affect product quality and experimental results in demanding applications such as medicine, electronics, and laboratories.

[0003] Common solutions to address noise issues with electric cylinders include using shock-absorbing pads, adding sound-insulating materials, and optimizing the transmission structure. However, these conventional methods have drawbacks. First, while using shock-absorbing pads can reduce transmission noise to a certain extent, their effectiveness is limited in high-load or high-frequency operating environments, and they can also reduce the rigidity of the equipment, affecting its stability. Furthermore, adding sound-insulating materials increases the size and weight of the equipment, limiting installation space and mobility. Therefore, we sought to design an electric cylinder with a novel structure to address this issue. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a piston rod type electric cylinder with a noise reduction structure to solve the problems raised in the above background technology.

[0005] The utility model is realized by the following technical solution: a piston rod type electric cylinder with a noise reduction structure, comprising: a driving assembly, a telescopic cylinder and a lubricating assembly, wherein the front end of the driving assembly is fixedly connected to the rear end of the telescopic cylinder, and a lubricating assembly for lubrication and noise reduction is fixed inside the front end of the telescopic cylinder;

[0006] The drive assembly includes a servo motor, a reducer and a coupling. The reducer is installed at the front end of the servo motor, and the coupling is installed at the front end of the reducer.

[0007] The telescopic cylinder comprises a cylinder body and a piston rod, wherein the piston rod is telescopically and slidably mounted inside the cylinder body;

[0008] The lubrication assembly includes a slip ring, a sealing end cover, an oiling nozzle and a smear ring. The front end of the slip ring is fixed with a sealing end cover by multiple screws. The inner wall of the slip ring is embedded with multiple smear rings distributed at equal intervals. The front side of the left surface of the slip ring is threadedly connected with an oiling nozzle.

[0009] As a preferred embodiment, the outer wall of the slip ring is fixedly connected to the inner wall of the front end of the cylinder body, and the inner wall of the slip ring is slidably connected to the outer wall of the piston rod. A slot is opened at the rear of the front end of the slip ring. In actual use, the slip ring is made of graphite material and, together with the lubricating oil channel inside it, can reduce the friction of the piston rod movement to the greatest extent.

[0010] As a preferred embodiment, a storage cavity is opened inside the ring wall of the slip ring, the front end of the storage cavity is connected with the rear end of the card slot, the cross-section of the storage cavity is a circular ring structure, and the cross-sectional width of the storage cavity is smaller than the cross-sectional width of the card slot. In actual use, lubricating oil is injected into the storage cavity through an oiling nozzle. The lubricating oil is preferably in a flowing state to ensure that the lubricating oil is smoothly applied to the outer wall of the piston rod.

[0011] As a preferred embodiment, the inner wall of the slip ring is radially recessed outward to form a plurality of equally spaced annular grooves, and the inner side of each annular groove radially penetrates the inner wall of the slip ring outward to form a plurality of communicating holes distributed in an annular structure.

[0012] As a preferred embodiment, the inner end of the communicating hole is communicated with the inner side of the annular groove, and the outer end of the communicating hole is communicated with the inside of the storage cavity. A smear ring is embedded in each of the annular grooves, and the smear ring is an annular sponge ring.

[0013] As a preferred embodiment, the structure and size of the cross section of the sealing end cover match the structure and size of the cross section of the card slot, and a sealing ring is provided on the rear side of the sealing end cover, and the cross-sectional width of the sealing ring matches the cross-sectional width of the storage cavity.

[0014] As a preferred embodiment, three screws are equally installed on the outer edge of the front surface of the sealing end cover, and three screws are equally installed on the inner edge of the front surface of the sealing end cover, and the six screws are distributed in six equal parts;

[0015] The inner end of the oil filling nozzle extends to the front side of the storage cavity, and the outer end of the oil filling nozzle is threadedly connected with a sealing cap.

[0016] After adopting the above technical solution, the beneficial effect of the utility model is as follows: by setting up a lubrication component, the smear ring made of sponge material can absorb lubricating oil and evenly spread it on the surface when it contacts the outer wall of the piston rod, thereby forming a thin oil film layer, thereby reducing the sliding friction of the reciprocating motion of the piston rod, avoiding the increase in noise of the entire equipment due to excessive friction after long-term use, thereby achieving the purpose of noise reduction;

[0017] The setting of the smear ring can clean some of the dust carried on the outer wall of the piston rod, avoiding damage to the piston rod due to the reciprocating motion of the piston rod;

[0018] The sealing end cover can be disassembled and cleaned inside the slip ring as needed when cleaning is needed later, which facilitates the subsequent cleaning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 This is a schematic diagram of the overall structure of a piston rod type electric cylinder with a noise reduction structure in the utility model.

[0021] Figure 2 This is a schematic diagram of the connection between the drive assembly and the piston rod of a piston rod type electric cylinder with a noise reduction structure according to the present invention.

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of a piston rod type electric cylinder with a noise reduction structure according to the present invention.

[0023] Figure 4 This is a schematic diagram of a lubrication assembly of a piston rod type electric cylinder with a noise reduction structure according to the present invention.

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of a slip ring of a piston rod type electric cylinder with a noise reduction structure according to the present invention.

[0025] Figure 6 for Figure 5 A magnified schematic diagram.

[0026] In the figure, 100-drive assembly, 110-servo motor, 120-reducer, 130-coupling;

[0027] 200-telescopic cylinder, 210-cylinder body, 220-piston rod;

[0028] 300-lubrication assembly, 310-slip ring, 311-ring groove, 312-connecting hole, 313-storage cavity, 314-card slot, 320-sealing end cover, 330-oiling nozzle, 340-applicator ring. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figures 1 to 6 The utility model provides a technical solution: a piston rod type electric cylinder with a noise reduction structure, comprising: a driving assembly 100, a telescopic cylinder 200 and a lubricating assembly 300. The front end of the driving assembly 100 is fixedly connected to the rear end of the telescopic cylinder 200. The lubricating assembly 300 for lubrication and noise reduction is fixed inside the front end of the telescopic cylinder 200.

[0031] The drive assembly 100 includes a servo motor 110, a reducer 120, and a coupling 130. The reducer 120 is installed at the front end of the servo motor 110, and the coupling 130 is installed at the front end of the reducer 120.

[0032] The telescopic cylinder 200 includes a cylinder body 210 and a piston rod 220. The piston rod 220 is telescopically and slidably mounted inside the cylinder body 210.

[0033] The lubrication assembly 300 includes a slip ring 310, a sealing end cover 320, an oiling nozzle 330 and a smear ring 340. The sealing end cover 320 is fixed to the front end of the slip ring 310 by multiple screws. Multiple smear rings 340 distributed at equal intervals are embedded and fixed on the inner wall of the slip ring 310. The oiling nozzle 330 is threadedly connected to the front side of the left surface of the slip ring 310.

[0034] See also Figures 1 to 5 The outer wall of the slip ring 310 is fixedly connected to the inner wall of the front end of the cylinder body 210, and the inner wall of the slip ring 310 is slidably connected to the outer wall of the piston rod 220. A card groove 314 is opened at the rear of the front end of the slip ring 310. In actual use, the slip ring 310 is made of graphite material, and with the lubricating oil channel inside it, it can minimize the friction of the movement of the piston rod 220.

[0035] A storage chamber 313 is provided inside the ring wall of the slip ring 310. The front end of the storage chamber 313 is connected to the rear end of the card slot 314. The cross-section of the storage chamber 313 is a circular ring structure. The cross-sectional width of the storage chamber 313 is smaller than the cross-sectional width of the card slot 314. In actual use, lubricating oil is injected into the storage chamber 313 through the oiling nozzle 330. The lubricating oil is preferably in a flowing state to ensure that the lubricating oil is smoothly applied to the outer wall of the piston rod 220.

[0036] The inner wall of the slip ring 310 is recessed radially outward to form a plurality of equally spaced annular grooves 311 . The inner side of each annular groove 311 penetrates radially outward through the inner wall of the slip ring 310 to form a plurality of communicating holes 312 distributed in an annular structure.

[0037] The inner end of the communicating hole 312 is communicated with the inner side of the annular groove 311 , and the outer end of the communicating hole 312 is communicated with the inside of the storage cavity 313 . A smear ring 340 is embedded and installed in each annular groove 311 . The smear ring 340 is an annular sponge ring.

[0038] As the first embodiment of the present invention, in actual use, when the piston rod 220 is driven to perform reciprocating telescopic motion, the piston rod 220 contacts the smear ring 340 embedded and installed in the annular groove 311 on the inner wall of the slip ring 310. Since the inner end of the communicating hole 312 is communicated with the inner side of the annular groove 311, the outer end of the communicating hole 312 is communicated with the interior of the storage chamber 313, and lubricating oil is injected into the storage chamber 313, the lubricating oil inside the storage chamber 313 can enter the smear ring 340 located inside the annular groove 311 through the communicating hole 312. The smear ring 340 made of sponge material can absorb the lubricating oil and evenly spread it on the surface when contacting the outer wall of the piston rod 220, thereby forming a thin oil film layer, thereby reducing the sliding friction of the reciprocating motion of the piston rod 220, and avoiding the increase in noise of the entire device due to excessive friction after long-term use, thereby achieving the purpose of noise reduction;

[0039] The setting of the smear ring 340 can prevent the situation where the surface is covered with too much oil due to direct use of the oil channel to supply oil, and can avoid the reciprocating motion caused by excessive oil covering the surface of the piston rod 220 causing oil to accumulate at the front end of the cylinder body 210. While ensuring that the piston rod 220 has sufficient lubrication, the front port of the cylinder body 210 will not accumulate oil and cause pollution, and can clean some dust carried on the outer wall of the piston rod 220 to avoid damage to the piston rod 220 due to the reciprocating motion of the piston rod 220.

[0040] See also Figures 4 to 6 The structure and size of the cross section of the sealing end cover 320 match the structure and size of the cross section of the card slot 314. A sealing ring is provided on the rear side of the sealing end cover 320, and the cross-sectional width of the sealing ring matches the cross-sectional width of the storage cavity 313.

[0041] Three screws are equally installed on the outer edge of the front surface of the sealing end cover 320, and three screws are equally installed on the inner edge of the front surface of the sealing end cover 320. The six screws are distributed in six equal parts.

[0042] The inner end of the oiling nozzle 330 extends to the front side of the storage chamber 313 , and the outer end of the oiling nozzle 330 is threadedly connected to a sealing cap.

[0043] As the second embodiment of the present invention, based on the above-mentioned first embodiment, the sealing end cover 320 is arranged in such a way that three screws are equally installed on the outer edge of the front surface of the sealing end cover 320, and three screws are equally installed on the inner edge of the front surface of the sealing end cover 320, and the six screws are distributed in six equal parts. This enables the sealing end cover 320 to form a stable seal, and when the slip ring 310 needs to be cleaned later, it can be disassembled and cleaned inside as needed, which facilitates the subsequent cleaning work.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A piston rod type electric cylinder with a noise reduction structure, comprising: A drive assembly (100), a telescopic cylinder (200), and a lubricating assembly (300), characterized in that the front end of the drive assembly (100) is fixedly connected to the rear end of the telescopic cylinder (200), and a lubricating assembly (300) for lubrication and noise reduction is fixed inside the front end of the telescopic cylinder (200); The drive assembly (100) comprises a servo motor (110), a reducer (120), and a coupling (130); the reducer (120) is mounted on the front end of the servo motor (110), and the coupling (130) is mounted on the front end of the reducer (120); The telescopic cylinder (200) comprises a cylinder body (210) and a piston rod (220), wherein the piston rod (220) is telescopically and slidably mounted inside the cylinder body (210); The lubrication assembly (300) comprises a slip ring (310), a sealing end cover (320), an oiling nozzle (330) and a smear ring (340). The front end of the slip ring (310) is fixed with the sealing end cover (320) by a plurality of screws. The inner wall of the slip ring (310) is embedded with a plurality of smear rings (340) distributed at equal intervals. The front side of the left surface of the slip ring (310) is threadedly connected with the oiling nozzle (330).

2. The piston rod type electric cylinder with a noise reduction structure according to claim 1, characterized in that: The outer wall of the slip ring (310) is fixedly connected to the inner wall of the front end of the cylinder body (210), and the inner wall of the slip ring (310) is slidably connected to the outer wall of the piston rod (220). A slot (314) is provided at the rear of the front end of the slip ring (310).

3. The piston rod type electric cylinder with a noise reduction structure according to claim 2, characterized in that: A storage cavity (313) is provided inside the ring wall of the slip ring (310), the front end of the storage cavity (313) is communicated with the rear end of the card slot (314), the cross section of the storage cavity (313) is a circular ring structure, and the cross-sectional width of the storage cavity (313) is smaller than the cross-sectional width of the card slot (314).

4. The piston rod type electric cylinder with a noise reduction structure according to claim 1, characterized in that: The inner wall of the slip ring (310) is recessed radially outward to form a plurality of equally spaced annular grooves (311), and the inner side of each annular groove (311) penetrates radially outward through the inner wall of the slip ring (310) to form a plurality of communicating holes (312) distributed in an annular structure.

5. The piston rod type electric cylinder with a noise reduction structure according to claim 4, characterized in that: The inner end of the communication hole (312) is in communication with the inner side of the annular groove (311), and the outer end of the communication hole (312) is in communication with the interior of the storage cavity (313). A smear ring (340) is embedded and installed in each annular groove (311), and the smear ring (340) is an annular sponge ring.

6. The piston rod type electric cylinder with a noise reduction structure according to claim 3, characterized in that: The structure and size of the cross section of the sealing end cover (320) match the structure and size of the cross section of the card slot (314). A sealing ring is provided on the rear side of the sealing end cover (320), and the cross-sectional width of the sealing ring matches the cross-sectional width of the storage cavity (313).

7. The piston rod type electric cylinder with a noise reduction structure according to claim 6, characterized in that: Three screws are equally installed on the outer edge of the front surface of the sealing end cover (320), and three screws are equally installed on the inner edge of the front surface of the sealing end cover (320), and the six screws are distributed in six equal parts; The inner end of the oiling nozzle (330) extends to the front side of the storage cavity (313), and the outer end of the oiling nozzle (330) is threadedly connected to a sealing cap.

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