阅读说明：本技术 一种活塞装环机用活塞环抓取机构 (Piston ring grabbing mechanism for piston ring loading machine ) 是由 朱世明 张斌 张青松 程从科 陈水林 蒋炬峰 张啸川 管秀峰 刘伟 于 2019-11-27 设计创作，主要内容包括：本发明公开了一种活塞装环机用活塞环抓取机构,包括固接于活塞装环机上的一连接板,所述连接板的下端面上连接有抓取一活塞环的夹取机构、且所述连接板上设有一圆形通孔,所述夹取机构包括围绕所述圆形通孔均匀分布且连接在所述连接板上的多个爪部件,每个所述爪部件包括安装架,设于所述连接板的下方；拉环组件,固接在所述安装架中朝向圆形通孔的一侧面上；托环组件,固接在所述安装架的另一侧面上。本发明通过拉环组件中的下压块和托环组件中的上托块之间的夹持作用夹紧需要装环的活塞环；并在伸缩组件的作用下通过拉板的作用,设置的多个爪部件可同时对活塞环的内径面施加作用力,以使实现活塞环的扩张。(The invention discloses a piston ring grabbing mechanism for a piston ring loading machine, which comprises a connecting plate fixedly connected to the piston ring loading machine, wherein a grabbing mechanism for grabbing a piston ring is connected to the lower end surface of the connecting plate, a circular through hole is formed in the connecting plate, the grabbing mechanism comprises a plurality of claw parts which are uniformly distributed around the circular through hole and connected to the connecting plate, and each claw part comprises an installation frame arranged below the connecting plate; the pull ring assembly is fixedly connected to one side surface, facing the circular through hole, of the mounting rack; and the supporting ring component is fixedly connected to the other side surface of the mounting rack. The piston ring needing to be mounted with the ring is clamped through the clamping action between the lower pressing block in the pull ring assembly and the upper supporting block in the supporting ring assembly; and under the action of the telescopic assembly and through the action of the pulling plate, the plurality of arranged claw components can simultaneously apply acting force to the inner diameter surface of the piston ring so as to realize the expansion of the piston ring.)

1. The utility model provides a piston ring snatchs mechanism for piston ring installation machine, its characterized in that includes a connecting plate (100) of rigid coupling on piston ring installation machine, be connected with on the lower terminal surface of connecting plate and snatch the mechanism of getting of a piston ring just be equipped with a circular through-hole (110) on the connecting plate, it includes around to get the mechanism circular through-hole evenly distributed just connects a plurality of claw parts (200) on the connecting plate, every claw part is including following a plurality of claw parts (200) on the connecting plate

The mounting frame (210) is arranged below the connecting plate;

the pull ring assembly (220) is fixedly connected to one side surface, facing the circular through hole, of the mounting frame and is used for being in contact with the piston ring from top to bottom and being in contact with the inner diameter surface of the piston ring;

and the supporting ring assembly (230) is fixedly connected to the other side surface of the mounting frame and is used for contacting the piston ring from bottom to top and matching with the pull ring assembly to clamp the piston ring.

2. The piston ring grabbing mechanism for a piston ring mounting machine according to claim 1, wherein the mounting frame is connected to the connecting plate through a telescopic assembly (240), the telescopic assembly comprises a telescopic cylinder (241) fixedly connected to the connecting plate, a fixing frame (242) fixedly connected to a side edge of a movable end of the telescopic cylinder and close to the circular through hole, and a roller (243) connected to the fixing frame, the mounting frame is fixedly connected to a lower portion of the movable end of the telescopic cylinder, and the roller receives a downward pressure to cause the telescopic cylinder to stretch and contract so as to drive the ring pulling assembly to act on an inner diameter surface of a piston ring.

3. The piston ring grabbing mechanism for the piston ring installing machine according to claim 1 or 2, wherein the pull ring assembly comprises a vertically arranged pull ring cylinder (221) fixedly connected to the mounting frame, a vertical moving plate (222) connected to a movable end of the pull ring cylinder, a lower pressing block (223) fixedly connected to a lower end of the vertical moving plate, and a pull plate (224) connected to a side surface of the lower pressing block facing the inner side of the connecting plate, and the length of the pull plate is greater than that of the lower pressing block.

4. The piston ring gripping mechanism for a piston ring installing machine according to claim 3, wherein a stop screw (225) is attached to a bottom surface of the fixed end of the ring pulling cylinder toward a bottom surface of the movable end of the ring pulling cylinder.

5. The piston ring grabbing mechanism for the piston ring mounting machine according to claim 1, wherein the ring supporting assembly comprises an upper ring supporting cylinder (231) and a lower ring supporting cylinder (231) which are fixedly connected to the mounting frame and vertically arranged, a connecting frame (232) which is connected to the movable ends of the upper ring supporting cylinder and the lower ring supporting cylinder and can move up and down, a transverse ring supporting cylinder (233) which is fixedly connected to the bottom end face of the connecting frame, a supporting block connecting frame (234) which is connected to the movable end of the transverse ring supporting cylinder and can move transversely, and an upper supporting block (235) which is fixedly connected to one end of the supporting block connecting frame close to the pull ring assembly.

6. The piston ring gripping mechanism for a piston ring assembling machine according to claim 5, wherein said pad connecting frame includes a cross plate (234-1) connected to a movable end of said lateral pad cylinder, a vertical plate (234-2) connected to a bottom end surface of the cross plate, and a long bar (234-3) connected to a bottom end surface of the vertical plate and extending toward the pull ring assembly, said upper pad being connected to an extending end of said long bar.

7. The piston ring grabbing mechanism for the piston ring installing machine according to claim 5, wherein a vertical plate (236) is fixedly connected to the connecting frame, and a vertically arranged stroke positioning screw (237) is connected to the vertical plate.

Technical Field

The invention belongs to the technical field of piston ring assembly, and particularly relates to a piston ring grabbing mechanism for a piston ring assembling machine.

Background

Because piston rings are various in types and have large ring diameter difference, wherein the scraping ring is light in weight and thin in thickness, the thickness is generally about 0.35mm, the thickness of the lining ring is generally about 1.9mm, two scraping rings and one lining ring are generally required to be arranged in a clamping groove on a piston in a piston ring arranging process, the existing piston ring arranging process is mostly manually arranged, the manual ring arranging efficiency is low, the labor intensity is high due to the thin thickness, and the piston ring is easy to be damaged manually; most importantly, the piston ring mounting precision requirement is high, the manual ring mounting precision is low, the rework rate is high, and accordingly high labor cost and other problems can be brought to enterprises.

Disclosure of Invention

The invention aims to provide a piston ring grabbing mechanism for a piston ring loading machine, which aims to overcome the technical problem.

The technical purpose of the invention is realized by the following technical scheme:

a piston ring grabbing mechanism for a piston ring loading machine comprises a connecting plate fixedly connected to the piston ring loading machine, wherein a clamping mechanism for grabbing a piston ring is connected to the lower end face of the connecting plate, a circular through hole is formed in the connecting plate, the clamping mechanism comprises a plurality of claw parts which are uniformly distributed around the circular through hole and connected to the connecting plate, and each claw part comprises a mounting frame and is arranged below the connecting plate; the pull ring assembly is fixedly connected to one side surface, facing the circular through hole, of the mounting frame and is used for being in contact with the piston ring from top to bottom and being capable of being in contact with the inner diameter surface of the piston ring; and the supporting ring component is fixedly connected to the other side surface of the mounting rack and is used for being contacted with the piston ring from bottom to top and matched with the pull ring component to clamp the piston ring.

Further, the mounting bracket is connected with the connecting plate through a telescopic assembly, telescopic assembly include the rigid coupling in telescopic cylinder, rigid coupling on the connecting plate are in telescopic cylinder expansion end side and close to in the mount of circular through-hole and connection are in gyro wheel on the mount, the mounting bracket rigid coupling is in telescopic cylinder expansion end's below, the gyro wheel accepts down force and makes telescopic cylinder stretch out and draw back in order to drive the pull ring subassembly and act on the internal diameter face of piston ring.

Further, the pull ring assembly comprises a pull ring cylinder, a vertical moving plate and a pull plate, the pull ring cylinder is fixedly connected to the mounting frame and is vertically arranged, the vertical moving plate is arranged at the movable end of the pull ring cylinder, the lower pressing block is fixedly connected to the lower end of the vertical moving plate, the pull plate is connected to the side face, facing the inner side of the connecting plate, of the lower pressing block, and the length of the pull plate is larger than that of the lower pressing block.

Furthermore, a limiting screw facing to the bottom surface of the movable end of the pull ring cylinder is connected to the bottom surface of the fixed end of the pull ring cylinder.

Further, the backing ring subassembly includes the rigid coupling is in on the mounting bracket and the vertical upper and lower backing ring cylinder that sets up, the link of sliding connection on the backing ring cylinder from top to bottom, the horizontal backing ring cylinder of rigid coupling on the link bottom end face, connect and be in the tray link on the horizontal backing ring cylinder expansion end and rigid coupling are in be close to in the tray link the last tray of one of pull ring subassembly.

Furthermore, the supporting block connecting frame comprises a transverse plate connected to the movable end of the transverse supporting ring cylinder, a vertical plate connected to the bottom end face of the transverse plate, and a long rod connected to the bottom end face of the vertical plate and extending towards the direction of the pull ring assembly, and the upper supporting block is connected to the extending end of the long rod.

Furthermore, a vertical plate is fixedly connected to the connecting frame, and a vertically arranged stroke positioning screw is connected to the vertical plate.

Has the advantages that:

1. the piston ring needing to be mounted with the ring is clamped through the clamping action between the lower pressing block in the pull ring assembly and the upper supporting block in the supporting ring assembly; under the action of the telescopic assembly and the action of the pulling plate, the plurality of claw parts can simultaneously apply acting force to the inner diameter surface of the piston ring so as to realize the expansion of the piston ring; finally, when the clamped piston ring is transferred to the clamping groove position corresponding to the piston, the pull ring is separated from the piston ring under the action of the pull ring cylinder, so that the piston ring is elastically restored and assembled on the piston, and the ring mounting process is completed;

2. the upper supporting block of the supporting ring component moves to the position below the piston ring under the action of the transverse supporting ring cylinder, then moves towards the piston ring under the action of the upper supporting ring cylinder and the lower supporting ring cylinder and contacts with the outer bottom surface of the piston ring, and the piston ring is clamped under the action of the lower pressing block;

3. according to the invention, the limiting screw is arranged below the movable end of the pull ring cylinder, and the extending position of the movable end of the pull ring cylinder can be controlled by adjusting the limiting screw, so that the position precision of the lower pressing blocks is adjusted to ensure that the plurality of lower pressing blocks are positioned on the same plane;

4. according to the invention, the vertical plate is arranged on the connecting frame, the vertically arranged stroke positioning screw is arranged on the upper end surface of the vertical plate, and the height of the upper supporting block when the upper supporting ring cylinder and the lower supporting ring cylinder retract is adjusted by adjusting the screwing depth of the screw, so that a plurality of upper supporting blocks are ensured to be positioned on the same plane.

Drawings

FIG. 1 is a perspective view of the present invention viewed from the bottom up;

FIG. 2 is a perspective view of the present invention viewed from above;

FIG. 3 is a perspective view of the claw member of the present invention;

FIG. 4 is a side view of FIG. 3;

in the figure:

100. a connecting plate; 110. a circular through hole; 200. a claw member; 210. a mounting frame; 220. a pull ring assembly; 221. a pull ring cylinder; 222. vertically moving the plate; 223. pressing the block; 224. pulling a plate; 225. a limit screw; 230. a ring assembly; 231. an upper and lower supporting ring cylinder; 232. a connecting frame; 233. a transverse supporting ring cylinder; 234. a supporting block connecting frame; 234-1, a transverse plate; 234-2, riser; 234-3, long rod; 235. an upper supporting block; 236. a vertical plate; 237. a stroke set screw; 240. a telescoping assembly; 241. a telescopic cylinder; 242. a fixed mount; 243. and a roller.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, the piston ring grabbing mechanism for a piston ring loading machine according to the present invention includes a connecting plate for being fixedly connected to the piston ring loading machine, a gripping mechanism for grabbing a piston ring is connected to a lower end surface of the connecting plate, and a circular through hole is formed at a middle position of the connecting plate, as shown in fig. 1, the connecting plate may preferably be a circular plate structure.

Referring to fig. 1, the gripping mechanism includes a plurality of claw members uniformly distributed around the circular through hole and connected to the bottom surface of the connecting plate, and preferably, 3 to 6 claw members are provided, and as shown in fig. 1 and 2, 6 claw members are provided.

Referring to fig. 3, each of the jaw members includes a mounting bracket, the mounting bracket is disposed below the connecting plate, as shown in the figure, the mounting bracket is in an inverted L-shaped structure, wherein a vertical plate of the mounting bracket is close to the circular through hole, and a pull ring assembly and a supporting ring assembly are respectively connected to two sides of the vertical plate, wherein the pull ring assembly is fixedly connected to a side surface of the mounting bracket facing the circular through hole, and is configured to contact with the piston ring from top to bottom and simultaneously contact with an inner diameter surface of the piston ring; the supporting ring assembly is fixedly connected to the other side face of the mounting frame and used for being contacted with the piston ring from bottom to top and matched with the pull ring assembly to clamp the piston ring.

Referring to fig. 3, the pull ring assembly includes a pull ring cylinder which is fixedly connected to the vertical plate and is vertically disposed, the pull ring cylinder is a sliding table cylinder, a vertical moving plate is fixedly connected to an outer side of the sliding table of the pull ring cylinder, a lower pressing block is connected to a lower end of the vertical moving plate, a pull plate is fixedly connected to an outer side surface of the lower pressing block toward an inner side of the connecting plate, upper end surfaces of the pull plate and the lower pressing block are located on the same horizontal plane, and a length of the pull plate is greater than a length of the lower pressing block, so that the pull plate can be in contact with an inner diameter surface of the piston ring when the lower pressing block is in contact with the piston ring.

Referring to fig. 4, a stop screw facing the bottom surface of the sliding table plate of the pull ring cylinder is connected to the bottom surface of the fixed end of the pull ring cylinder, and the sliding table plate is in contact with the stop screw in the downward moving process, so that the downward moving position of the sliding table plate is limited by the stop screw.

Referring to fig. 3, the supporting ring assembly includes an upper supporting ring cylinder and a lower supporting ring cylinder which are fixedly connected to a vertical plate of the mounting frame and vertically arranged, the upper supporting ring cylinder and the lower supporting ring cylinder are sliding table cylinders, a connecting frame is fixedly connected to an outer side surface of a sliding table plate of the sliding table cylinder, the connecting frame is of an L-shaped structure, a vertical plate of the connecting frame is connected to the sliding table cylinder, a transverse supporting ring cylinder is fixedly connected to a lower portion of a transverse plate of the connecting frame, the transverse supporting ring cylinder is a sliding table cylinder, a telescopic direction of the transverse supporting ring cylinder faces a direction of the pull ring assembly, and a supporting block connecting frame is connected to a bottom surface of the sliding table plate of the transverse supporting ring cylinder;

referring to fig. 4, the supporting block connecting frame includes a transverse plate connected to the bottom surface of the sliding platen of the transverse supporting ring cylinder, a vertical plate connected to one end of the bottom end surface of the transverse plate, and a long rod connected to the bottom end surface of the vertical plate and extending toward the pull ring assembly, and an upper supporting block is connected to the end surface of the long rod, so that after the pull ring assembly is in contact with the piston ring, the transverse supporting ring cylinder is first started to drive the supporting block connecting frame to drive the upper supporting block to move below the piston ring, and after the upper supporting block moves below the piston ring, the upper supporting ring cylinder and the lower supporting ring cylinder are started to drive the supporting block connecting frame to drive the upper supporting block to move towards the piston ring and to drive the upper supporting block to contact with the piston ring, so that the piston ring is clamped by the lower pressing block and the upper.

Referring to fig. 4, for the further arrangement of the supporting ring assembly, a vertical plate is fixedly connected to the connecting frame, and a vertically arranged stroke positioning screw is arranged on the upper end surface of the vertical plate, so that the height of the upper supporting block when the upper supporting ring cylinder and the lower supporting ring cylinder retract is adjusted by adjusting the screwing depth of the stroke positioning screw, so as to ensure that the plurality of upper supporting blocks are located on the same plane.

A further technical scheme of the present invention is that the mounting bracket may be connected to the connecting plate through a telescopic assembly, please refer to fig. 3, wherein the telescopic assembly includes a telescopic cylinder fixedly connected to the connecting plate, the telescopic cylinder is a sliding table cylinder, a sliding table plate of the sliding table cylinder is in an L-shaped structure, the sliding table plate extends and retracts toward the circular through hole, a fixing bracket is fixedly connected to a side of the sliding table plate of the sliding table cylinder, and the mounting bracket is fixedly connected to a bottom surface of a sliding table plate bottom plate; the fixed frame is connected with a vertically arranged roller, namely the grabbing mechanism is provided with a plurality of rollers which are uniformly distributed through circular through holes, the telescopic cylinder is always in an inflation extending state, when the rollers are not stressed, the diameter of the circle formed by the plurality of rollers around the roller is required to be smaller than that of the circular through hole, a vertical push-pull shaft can be arranged above the circular through hole, the push-pull shaft moves downwards along the circular through hole and is in contact with the plurality of rollers, the telescopic cylinder connected with the fixed frame retracts after acting force is applied to the rollers, and then the mounting frame and the pull ring assembly move, so that the pull plate in the pull ring assembly applies acting force to the inner diameter of the piston ring, and the pull plates in the plurality of claw parts apply acting force to the inner diameter of the piston ring in different directions at the same time, so that the piston ring is expanded; after the ring is installed, the pushing and pulling shaft moves upwards and is separated from the contact with the roller, the stretching state of the telescopic cylinder enables the mounting frame and the pull ring assembly to return, and therefore the arrangement of the telescopic assembly can enable the plurality of claw parts to expand and contract uniformly.

For example, the stroke of the telescopic cylinder is 40mm, the diameter of the six claws is 30mm during contraction, and the diameter of the six claws is 110mm during expansion, so that the range of the ring diameter for realizing automatic grabbing is 35 mm-105 mm. The actual ring installing requirement is met to a greater extent.

The use process comprises the following steps:

when the piston rotates to a position for installing a lining ring or a doctor ring, a rotary electric cylinder arranged on a ring installing machine drives the piston ring grabbing mechanism to integrally move above the piston ring, and a ring pulling cylinder extends downwards to enable a lower pressing block and a pulling plate to descend to a position limited by a limiting screw; at the moment, a lifting electric cylinder on the ring loading machine drives the whole piston ring grabbing mechanism to descend, so that the lower pressing block is in contact with the piston ring, then a transverse ring supporting cylinder extends out, an upper supporting block is positioned right below the piston ring, and the upper and lower ring supporting cylinders retract, so that the upper supporting block is in contact with the piston ring, and the piston ring is supported; the cylinder which promotes the pulling shaft to descend on the ring loading machine is started, so that the pulling shaft moves downwards to apply acting force on the roller, the telescopic cylinder retracts, and uniform expansion of the plurality of claw parts is realized, so that the piston ring is expanded, and the piston ring is grabbed;

after ring taking is completed, a lifting electric cylinder on the ring loading machine enables the whole piston ring grabbing mechanism to ascend, the piston ring grabbing mechanism is enabled to integrally move to the upper portion of a ring loading station under the action of a rotating electric cylinder, the lifting electric cylinder enables the piston ring grabbing mechanism to descend, the clamped piston rings are located on the same plane of a piston clamping groove, a pull ring cylinder retracts, and the piston rings automatically retract and bounce into the clamping groove of the piston; at the moment, the upper and lower supporting ring cylinders extend out, the transverse supporting ring cylinder retracts, the lifting electric cylinder rises, the piston ring grabbing mechanism rises, ring installation is finished, and then the next cycle is carried out.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

In order to make the objects, technical solutions and advantages of the present invention more concise and clear, the present invention is described with the above specific embodiments, which are only used for describing the present invention, and should not be construed as limiting the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.