Parallel pneumatic claw with long service life

Abstract

The utility model discloses a parallel pneumatic gripper with long service life, which comprises a cylinder body, the cylinder body is provided with two piston rods which are arranged side by side and move in opposite directions, and rack rods which are arranged side by side and move in opposite directions are arranged above the piston rods. A first cavity and a second cavity for the piston rod and the rack rod to move are formed in the cylinder body, anti-blocking sleeves are arranged at inlets in the two ends of the first cavity and inlets in the two ends of the second cavity and arranged on the outer wall of the piston rod and the outer wall of the rack rod in a sleeving mode, and each anti-blocking sleeve is provided with a conical extending part. Particles, dust, batting and other impurities attached to the surfaces of the piston rod and the rack rod are scraped off through the scraping part, the groove and the two side edges of the groove, the impurities are prevented from entering the first cavity and the second cavity along with the piston rod and the rack rod, damage to the O-shaped sealing ring caused by the impurities and increase of abrasion of the rack and the rack rod are avoided, and the service life of the piston rod and the rack rod is prolonged. Therefore, the service life of the product is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic component technology, and in particular to a parallel pneumatic gripper with a long service life. Background Technology

[0002] A pneumatic gripper is a mechanical device, typically referring to a mechanical device similar to a human finger, that can be connected to industrial robots to achieve better autonomous operation capabilities. The design of a pneumatic gripper allows it to interact with a variety of products, whether for handling, decorating, or other types of work, adapting to different work environments and fields. It is a common component of automated mechanical equipment, playing a particularly important role in industrial robotics technology.

[0003] In existing parallel grippers, during operation, dust and particles in the air adhere to the piston rod as it reciprocates. These particles then enter the cylinder of the parallel gripper as the piston rod moves, increasing friction between the sealing ring and the inner wall of the cylinder. This accelerates the aging and wear of the sealing ring and reduces the service life of the parallel gripper. Therefore, the applicant has made a beneficial design and found a solution to the above problems. The technical solution to be introduced below was developed in this context. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the traditional parallel pneumatic gripper design and provide a product with an extended service life.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A parallel pneumatic gripper with a long service life includes a cylinder body. The cylinder body has two piston rods arranged side by side and moving in opposite directions. Above the piston rods are rack rods arranged side by side and moving in opposite directions. The cylinder body has a first cavity and a second cavity for the piston rods and rack rods to move. Anti-clogging sleeves are provided at both ends of the first cavity and the second cavity and are sleeved on the outer walls of the piston rods and rack rods. The anti-clogging sleeves have tapered extensions that abut against the outer walls of the piston rods and rack rods. The extensions have a plurality of grooves evenly distributed around a dot as the axis. The entrance of the extensions has an inclined scraping part.

[0007] Preferably, the cylinder body has air grippers on both sides, the cylinder body has a concave cavity that communicates with the second cavity, and the cylinder body has multiple air passages that communicate with the first cavity.

[0008] Preferably, one end of the piston rod and rack is connected and fixed to the gas gripper on one side of the cylinder body, and the other end of the piston rod and rack is slidably disposed in the gas gripper on the other side of the cylinder body.

[0009] Preferably, the cavity is provided with a pin, and the pin is provided with a rotatable gear that meshes with a rack.

[0010] Preferably, a guide sleeve is provided inside the first cavity and is fitted onto the outer wall of the piston rod, and an O-ring is provided between the guide sleeve and the piston rod.

[0011] Preferably, the outer wall of the piston rod is provided with a piston ring and a pressure ring, the piston ring and the pressure ring abut against each other, a plurality of O-rings are provided between the piston ring and the first cavity, and a plurality of O-rings are provided between the piston ring, the pressure ring and the piston rod.

[0012] Preferably, an O-ring is provided between the anti-clogging sleeve and the first cavity, and the anti-clogging sleeve is provided with a nut portion.

[0013] Beneficial effects:

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention removes particles, dust, lint, and other impurities adhering to the surface of the piston rod and rack rod during their reciprocating motion by scraping the scraping part, groove, and both sides of the groove. This prevents impurities from following the piston rod and rack rod into the first and second cavities, thus avoiding damage to the O-ring seal and increased wear on the rack and rack rod, thereby extending the product's service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a parallel pneumatic gripper with a long service life according to the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the first cavity of a parallel pneumatic gripper with a long service life according to the present invention.

[0018] Figure 3 This is a cross-sectional schematic diagram of the second cavity structure of a parallel pneumatic gripper with a long service life according to this utility model.

[0019] Figure 4 This is a schematic diagram of the anti-clogging sleeve for a parallel pneumatic gripper with a long service life according to this utility model.

[0020] The correspondence between the labels and component names in the attached figures is as follows:

[0021] Reference numerals: 1. Cylinder body; 2. Piston rod; 3. Rack rod; 4. Anti-clogging sleeve; 5. Pneumatic gripper; 6. Guide sleeve; 7. O-ring seal; 11. First cavity; 12. Second cavity; 13. Cavity; 14. Air passage; 15. Pin; 16. Gear; 21. Piston ring; 22. Pressure ring; 41. Extension; 42. Groove; 43. Scraping part; 44. Nut part. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0025] Reference example Figures 1 to 4A parallel pneumatic gripper with a long service life includes a cylinder body 1. The cylinder body 1 has two piston rods 2 arranged side-by-side and moving in opposite directions. Above the piston rods 2 is a rack rod 3 arranged side-by-side and moving in opposite directions. The cylinder body 1 has a first cavity 11 and a second cavity 12 for the piston rods 2 and rack rod 3 to move. Anti-clogging sleeves 4 are provided at both ends of the first cavity 11 and the second cavity 12, and are fitted onto the outer walls of the piston rods 2 and rack rod 3. The anti-clogging sleeves 4 have tapered extensions 41 that abut against the outer walls of the piston rods 2 and rack rod 3. The extension 41 is provided with a number of grooves 42 evenly distributed around the center point. The entrance of the extension 41 is provided with an inclined scraping part 43. During the reciprocating movement of the piston rod 2 and the rack rod 3, the scraping part 43, the grooves 42 and the two sides of the grooves 42 scrape away the particles, dust, lint and other impurities attached to the surface of the piston rod 2 and the rack rod 3, so as to prevent impurities from entering the first cavity 11 and the second cavity 12 with the piston rod 2 and the rack rod 3, and to prevent impurities from damaging the O-ring seal 7 and increasing the wear of the rack and rack rod 3, thereby extending the service life of the product.

[0026] It is worth mentioning that the cylinder body 1 is provided with air grippers 5 on both sides, the cylinder body 1 is provided with a cavity 13 and is connected to the second cavity 12, the cylinder body 1 is provided with multiple air passages 14 and is connected to the first cavity 11, the air grippers 5 are used to grip objects, the cavity 13 provides space for the gear 16, and the air passages 14 are connected to the air source to provide driving force for the piston rod 2.

[0027] It is worth mentioning that one end of the piston rod 2 and the rack rod 3 is connected and fixed to the gas gripper 5 on one side of the cylinder body 1, and the other end of the piston rod 2 and the rack rod 3 is slidably disposed in the gas gripper 5 on the other side of the cylinder body 1. One of the piston rods 2 and the rack rod 3 arranged side by side is fixed to the gas gripper 5 on one side of the cylinder body 1, and the other piston rod 2 and the rack rod 3 arranged side by side is fixed to the gas gripper 5 on the other side of the cylinder body 1, so that the gas gripper 5 can move to both sides of the cylinder body 1.

[0028] It is worth mentioning that the cavity 13 is provided with a pin 15, the pin 15 is provided with a rotatable gear 16, and meshes with the rack 3. The pin 15 causes the gear 16 to rotate around the dot as the axis.

[0029] It is worth mentioning that a guide sleeve 6 is provided in the first cavity 11 and is sleeved on the outer wall of the piston rod 2. An O-ring seal 7 is provided between the guide sleeve 6 and the piston rod 2. The guide sleeve 6 provides guidance for the piston rod 2, and the O-ring seal 7 prevents gas leakage in the first cavity 11.

[0030] It is worth mentioning that the outer wall of the piston rod 2 is provided with piston ring 21 and pressure ring 22. The piston ring 21 and pressure ring 22 abut against each other. Multiple O-rings 7 are provided between the piston ring 21 and the first cavity 11. Multiple O-rings 7 are provided between the piston ring 21, pressure ring 22 and piston rod 2. The O-rings 7 prevent gas from leaking to the other end of the piston ring 21 and pressure ring 22, ensuring that the gas has sufficient pressure to push the piston rod 2 to move stably.

[0031] It is worth mentioning that an O-ring 7 is provided between the anti-clogging sleeve 4 and the first cavity 11, and the anti-clogging sleeve 4 is provided with a nut part 44. The O-ring 7 provided here further reduces the possibility of leakage in the first cavity 11, and the nut part 44 makes it easy for the staff to tighten the anti-clogging sleeve 4 into the first cavity and the second cavity 12.

[0032] The above design scheme can extend the product's lifespan.

[0033] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A parallel pneumatic gripper with a long service life, comprising a cylinder body (1), wherein the cylinder body (1) is provided with two piston rods (2) arranged side by side and moving in opposite directions, and a rack rod (3) arranged side by side and moving in opposite directions is provided above the piston rods (2), and the cylinder body (1) is provided with a first cavity (11) and a second cavity (12) for the piston rods (2) and rack rod (3) to move, respectively, characterized in that: The first cavity (11) and the second cavity (12) are provided with anti-clogging sleeves (4) at both ends of the inlet and are sleeved on the outer wall of the piston rod (2) and the rack rod (3). The anti-clogging sleeve (4) is provided with a tapered extension (41) and abuts against the outer wall of the piston rod (2) and the rack rod (3). The extension (41) is provided with a number of grooves (42) evenly distributed around the dot as the axis. The inlet of the extension (41) is provided with an inclined scraping part (43).

2. The long-service-life parallel pneumatic gripper according to claim 1, characterized in that: The cylinder body (1) is provided with air grippers (5) on both sides. The cylinder body (1) is provided with a concave cavity (13) and communicates with the second cavity (12). The cylinder body (1) is provided with multiple air passages (14) and communicates with the first cavity (11).

3. The long-service-life parallel pneumatic gripper according to claim 2, characterized in that: One end of the piston rod (2) and rack rod (3) is connected and fixed to the air gripper (5) on one side of the cylinder body (1), and the other end of the piston rod (2) and rack rod (3) is slidably disposed in the air gripper (5) on the other side of the cylinder body (1).

4. The long-service-life parallel pneumatic gripper according to claim 2, characterized in that: The cavity (13) is provided with a pin (15), and the pin (15) is provided with a rotatable gear (16) that meshes with a rack (3).

5. The long-service-life parallel pneumatic gripper according to claim 1, characterized in that: The first cavity (11) is provided with a guide sleeve (6) and is sleeved on the outer wall of the piston rod (2). An O-ring (7) is provided between the guide sleeve (6) and the piston rod (2).

6. The long-service-life parallel pneumatic gripper according to claim 1, characterized in that: The outer wall of the piston rod (2) is provided with a piston ring (21) and a pressure ring (22). The piston ring (21) and the pressure ring (22) abut against each other. Multiple O-rings (7) are provided between the piston ring (21) and the first cavity (11). Multiple O-rings (7) are provided between the piston ring (21), the pressure ring (22) and the piston rod (2).

7. The long-service-life parallel pneumatic gripper according to any one of claims 2 to 6, characterized in that: An O-ring (7) is provided between the anti-clogging sleeve (4) and the first cavity (11), and the anti-clogging sleeve (4) is provided with a nut part (44).

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