CN111390523B

CN111390523B - Piston upper ring distributing and assembling device

Info

Publication number: CN111390523B
Application number: CN202010317506.0A
Authority: CN
Inventors: 张青松; 陈水林; 沈利; 程从科; 张斌; 管秀峰
Original assignee: Anqing Atge Engineering Co ltd; Anqing Art TP Pistons Co Ltd
Current assignee: Anqing Atge Engineering Co ltd; Anqing Art TP Pistons Co Ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-05-14
Anticipated expiration: 2040-04-21
Also published as: CN111390523A

Abstract

The invention discloses a piston upper ring distributing and assembling device, which comprises an upper ring distributing device and an upper ring assembling device, wherein the upper ring assembling device comprises a connecting plate capable of moving up and down, and a jacking assembly and an open ring assembly which are fixedly connected with the connecting plate; the jacking assembly comprises a blocking component which is used for jacking one side of the upper ring opposite to the notch of the upper ring and can move left and right; the open-loop assembly comprises a bidirectional electric cylinder capable of moving left and right and clamping assemblies fixedly connected with two moving ends of the bidirectional electric cylinder respectively; the upper ring assembling device clamps two notched ends of the upper ring through the clamping components respectively and keeps away from each other, the notches of the upper ring are opened, meanwhile, the blocking component can move towards one side away from the clamping components to enable the upper ring to be kept in a circular ring shape, the connecting plate moves downwards, the clamping components are close to each other, and the upper ring can be sleeved at the corresponding position of the piston.

Description

Piston upper ring distributing and assembling device

Technical Field

The invention relates to the technical field of pistons, in particular to a piston upper ring distributing and assembling device.

Background

The piston rings are various in types and have large ring diameter difference and comprise a first ring, a second ring, a lining ring and a scraping piece, wherein the first ring and the second ring are collectively called as an upper ring.

The upper ring has a gap.

The upper ring that has now is mostly artifical manual branch material and equipment, but manual efficiency is low, easily damages upper ring and the equipment precision is low.

Disclosure of Invention

In order to solve the technical problem, the invention provides a piston upper ring distributing and assembling device.

In order to solve the technical problems, the invention adopts the following technical scheme:

a piston upper ring distributing and assembling device comprises an upper ring distributing device and an upper ring assembling device, wherein the upper ring distributing device separates a single upper ring in a direct clamping mode;

the upper ring assembly device comprises a connecting plate capable of moving up and down, and a jacking assembly and an open ring assembly which are fixedly connected with the connecting plate; the jacking assembly comprises a jacking upper ring and a blocking component which is positioned on one side opposite to the notch of the upper ring and can move left and right; the open-loop assembly comprises a bidirectional electric cylinder capable of moving left and right and clamping assemblies fixedly connected with two moving ends of the bidirectional electric cylinder respectively;

the upper ring assembling device clamps two notched ends of the upper ring through the clamping components respectively and keeps away from each other, the notches of the upper ring are opened, meanwhile, the blocking component can move towards one side away from the clamping components to enable the upper ring to be kept in a circular ring shape, the connecting plate moves downwards, the clamping components are close to each other, and the upper ring can be sleeved at the corresponding position of the piston.

Further, clamping component includes the connecting block with the removal end fixed connection of two-way electric jar, the V type draw-in groove that sets up along the fore-and-aft direction is seted up to one side that the connecting block is close to the barrier unit, and two V type draw-in grooves have the opposite direction setting of great open-ended one end orientation.

Further, including the first straight line module of vertical setting, the removal end and the connecting plate fixed connection of first straight line module.

Further, the jacking assembly comprises a first air cylinder arranged along the left-right direction, and the moving end of the first air cylinder is fixedly connected with the blocking component.

Further, the blocking component comprises two tightening rods arranged along the front-back direction, rollers rotatably connected with the tightening rods are arranged at the bottoms of the tightening rods, and annular grooves are formed in the circumferential directions of the rollers.

Further, the open loop assembly comprises a second cylinder arranged along the left-right direction; the moving end of the second cylinder is fixedly connected with the bidirectional electric cylinder, and the fixed end of the second cylinder is connected to one side of the connecting plate; the open-loop assembly further comprises a lifting cylinder; the removal end of lift cylinder and the stiff end fixed connection of second cylinder, and stiff end and connecting plate fixed connection.

Further, including the second sharp module that sets up along left right direction, the removal end of second sharp module and the stiff end fixed connection of first sharp module.

Furthermore, the upper ring distribution device comprises a platform, a first material storage column and a second material storage column which are fixedly arranged on the upper surface of the platform and used for placing the upper rings, a lifting plate which is arranged on the lower portion of the second material storage column and can move up and down, and a clamping jaw which can clamp the upper rings and can move along the long edge direction of the platform, wherein the distances between the bottom surface of the first material storage column and the bottom surface of the second material storage column and the upper surface of the platform are both greater than the height of one upper ring and less than the heights of the two upper rings; the lifting plate can lift the upper ring of the second material storage column before the clamping jaws clamp the upper ring of the lowermost layer of the first material storage column and move transversely to the bottom of the second material storage column; the lifting plate is capable of moving downwardly and bringing the lowermost upper ring into contact with the upper surface of the platform before the clamping jaws clamp the lowermost upper ring of the second storage column.

Furthermore, the bottom of the first material storage column and the bottom of the second material storage column are fixedly provided with a positioning plate, and the distance between the bottom surface of the positioning plate and the upper surface of the platform is larger than the height of one upper ring and smaller than the height of two upper rings.

Furthermore, the first material storage column and the second material storage column respectively comprise a connecting column which is vertically arranged, an upper end plate which is horizontally arranged, a notch for positioning an upper ring and a guide plate which is vertically arranged and a fixing column; one end of the connecting column is fixedly connected with the lower surface of the upper end plate, and the other end of the connecting column is fixedly connected with the upper surface of the positioning plate; one end of the guide plate is fixedly connected with the upper end plate, and the other end of the guide plate is fixedly connected with the positioning plate; one end of the fixing column is fixedly connected with the upper surface of the platform, and the other end of the fixing column is fixedly connected with the guide plate.

Compared with the prior art, the invention has the beneficial technical effects that:

1. through the matching of the clamping assembly and the blocking part, when the clamping assembly expands the gap of the piston ring, the blocking part moves backwards at the same time, so that the inner diameter of the upper ring can be expanded, the roundness of the upper ring can be ensured, and the deformation of the upper ring is avoided; after the internal diameter of upper portion ring expands, can be very convenient embolia the piston outside, when the upper portion ring draw-in groove that moves the piston is the same height, clamping component is close to each other, installs upper portion ring to the upper portion ring draw-in groove in, has realized the automatic assembly of upper portion ring, and is efficient, and the precision is high.

2. The first ring and the second ring of piston are collectively called upper portion ring, and first ring and second ring are placed respectively on first material stock post and second material stock post to press from both sides and get the branch material, when pressing from both sides the upper portion ring on the first material stock post, adopt the board of lifting to hold up the upper portion ring on the second material stock post and dodge, can accomplish the difference clamp of first ring and second ring on an equipment and get, have improved and have divided material speed, have reduced the area of equipment.

Drawings

FIG. 1 is a schematic view of the overall structure of the upper ring feed divider of the present invention;

FIG. 2 is a schematic structural view of a linear electric cylinder according to the present invention;

FIG. 3 is a schematic structural view of a third lift cylinder of the present invention;

FIG. 4 is a schematic structural view of a first lift cylinder and a second lift cylinder in accordance with the present invention;

FIG. 5 is a schematic view of a lift plate according to the present invention;

FIG. 6 is a schematic view of a second positioning plate according to the present invention;

FIG. 7 is a schematic view of the jaws of the present invention in preparation for gripping an upper ring;

FIG. 8 is a schematic structural view of a fixing post according to the present invention;

FIG. 9 is a schematic structural view of a carrier plate according to the present invention;

FIG. 10 is a schematic structural view of a connecting plate according to the present invention;

FIG. 11 is a schematic view of the overall structure of the upper ring assembly apparatus of the present invention;

FIG. 12 is a schematic view of the construction of the tightening rod according to the present invention;

FIG. 13 is a schematic view of the upper ring structure of the present invention;

fig. 14 is a schematic structural view of a V-shaped card slot of the present invention.

Detailed Description

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 10 and 11, a piston upper ring separating and assembling device comprises an upper ring separating device and an upper ring assembling device, wherein the upper ring separating device separates a single upper ring by direct clamping;

the upper ring assembling device comprises a connecting plate 600 capable of moving up and down, and a jacking assembly 800 and an open ring assembly 900 which are fixedly connected with the connecting plate; the jacking assembly comprises a blocking component 810 which is used for jacking the upper ring, is positioned on one side opposite to the notch of the upper ring and can move left and right; the open loop assembly comprises a bidirectional electric cylinder 910 capable of moving left and right and a clamping assembly 911 fixedly connected with two moving ends of the bidirectional electric cylinder respectively;

The upper ring distributing device is used for separating single upper rings, and the upper ring assembling device is used for assembling the single upper rings separated by the upper ring distributing device to the corresponding position of the piston; specifically, the upper ring 10 includes a first ring and a second ring, a first ring locking groove and a second ring locking groove are formed in the piston, the first ring is installed in the first ring locking groove, and the second ring is installed in the second ring locking groove.

As shown in fig. 1 to 7, the upper ring splitting device includes a platform 100, a first material storage column 200 and a second material storage column 300 fixed on the upper surface of the platform and used for placing the upper rings, a lifting plate 410 disposed at the lower part of the second material storage column and capable of moving up and down, and a clamping jaw 540 capable of clamping the upper rings and moving along the long side direction of the platform, wherein the distances between the bottom surfaces of the first material storage column and the second material storage column and the upper surface of the platform are both greater than the height of one upper ring and less than the heights of two upper rings; the lifting plate can lift the upper ring of the second material storage column before the clamping jaws clamp the upper ring of the lowermost layer of the first material storage column and move transversely to the bottom of the second material storage column; the lifting plate is capable of moving downwardly and bringing the lowermost upper ring into contact with the upper surface of the platform before the clamping jaws clamp the lowermost upper ring of the second storage column.

In the embodiment, one ring is arranged on the first material storage column, and the other ring is arranged on the second material storage column; but the placement may be reversed.

A plurality of rings are sleeved on the first material storage column, and the bottommost ring can be contacted with the upper surface of the platform; the first ring and the second ring are thicker, so that the clamping jaws can be used for directly clamping the rings without clamping other first rings or second rings; after the clamping jaw clamps a ring of lower floor, drive a ring and remove along the long limit direction of platform, a ring slides at the upper surface of platform this moment, can pass through the bottom that the second deposited the post on the way.

Place two rings on the material post is deposited to the second, and the second deposits two rings of lower floor and platform upper surface direct contact on the material post, can block the motion of a ring, lifts all two rings on the material post is deposited to the second through the board of lifting, dodges one ring, and the clamping jaw can be smoothly transported one ring to other processes this moment.

After the first ring passes through, the lifting plate descends, the second ring is in direct contact with the upper surface of the platform, and the clamping jaws can clamp the second ring at the lowest layer and convey the second ring to other parts.

The positioning plate is suspended above the platform, a certain gap is formed between the positioning plate and the platform, and the height of the gap is larger than that of an upper ring, so that the clamping claws can convey the upper ring to other processes after clamping the upper ring; however, the gap needs to be smaller than the heights of the two upper rings, when the clamping jaws clamp the lowermost upper ring and transport the upper ring to other stations, the positioning plate is needed to limit the second upper ring, so that the second upper ring is prevented from being dislocated by the friction force and the adhesion force between the lowermost upper ring and the second upper ring, and the influence on subsequent production is avoided.

As shown in fig. 1 and 8, positioning plates are fixedly disposed at the bottom of the first material storage column 200 and the bottom of the second material storage column 300, and a distance between the bottom surface of the positioning plate and the upper surface of the platform is greater than the height of one upper ring and less than the height of two upper rings.

The positioning plate at the bottom of the first stock column is a first positioning plate 210, and the positioning plate at the bottom of the second stock column is a second positioning plate 310.

As shown in fig. 8, each of the first material storage column and the second material storage column includes a vertically arranged connection column 220, a horizontally arranged upper end plate 230, a vertically arranged guide plate 240 for positioning a notch of the upper ring, and a fixed column 250; one end of the connecting column is fixedly connected with the lower surface of the upper end plate, and the other end of the connecting column is fixedly connected with the upper surface of the positioning plate; one end of the guide plate is fixedly connected with the upper end plate, and the other end of the guide plate is fixedly connected with the positioning plate; one end of the fixing column is fixedly connected with the upper surface of the platform 100, and the other end of the fixing column is fixedly connected with the guide plate.

The first material storage column and the second material storage column are similar in structure; a plurality of upper rings pass the top end plate cover in the outside of spliced pole, and the upper ring has the breach, and the deflector card is in the breach, makes all breachs all towards a position, and the upper ring of lower floor mainly leans on the deflector to fix a position.

As shown in fig. 5 and 6, the locating plate of second material storage column 300 is second locating plate 310, the cross sectional shape of second locating plate is the circular that both sides are provided with breach 311, the board of lifting is including first lifting plate 411 and the second lifting plate 412 that is located second locating plate both sides and level setting, one side of first lifting plate and second lifting plate all have with the protruding position that the shape of breach corresponds, the protruding position of first lifting plate and second lifting plate all sets up towards the breach of this side.

The first protrusion portion of the first lifting plate is a first protrusion portion 411-1, and the second protrusion portion of the second lifting plate is a second protrusion portion 412-1.

When stacking a plurality of upper rings on first material storage column and the second material storage column, the upper surface of the upper ring of bottommost should be less than the lower surface of locating plate, and the inner diameter face of second layer upper ring should be able to laminate mutually with the arc surface of locating plate for the locating plate can fix a position second layer upper ring, after lower floor's upper ring was pressed from both sides away by the clamping jaw, second layer upper ring can slide downwards along the arc surface and the deflector 240 of locating plate, finally fall on the platform.

Therefore, the upper ring is tightly attached to the positioning plate, the lifting plate is difficult to support the two rings, the protruding part penetrates into the notch, the lifting plate cannot fall off when supporting the two rings, and the reliability is good.

As shown in fig. 4, the lifting device comprises a first lifting cylinder 421 and a second lifting cylinder 422, which are disposed at the lower part of the platform, wherein the moving end of the first lifting cylinder is fixedly connected with the bottom surface of the first lifting plate 411, and the moving end of the second lifting cylinder is fixedly connected with the bottom surface of the second lifting plate 412.

The lifting action of the first lifting plate is realized through the first lifting cylinder, and the lifting action of the second lifting plate is realized through the second lifting cylinder.

As shown in fig. 1-3, the clamping device 500 is arranged below the platform, the clamping device comprises a linear electric cylinder 510 arranged along the long side direction of the platform, a third lifting cylinder 520 fixedly connected with the moving end of the linear electric cylinder and vertically arranged, and a bidirectional air cylinder 530 fixedly connected with the moving end of the third lifting cylinder and transversely arranged, and the clamping jaws 540 are respectively fixedly connected with two working parts of the bidirectional air cylinder; the platform is provided with openings 110 extending along the directions of two ends of the platform, and the size of the clamping jaw is smaller than that of the opening.

First lift cylinder, second lift cylinder and third lift cylinder are the slip table cylinder, all have stiff end and relative stiff end and do concertina movement's removal end.

The clamping jaws are two in number and are respectively and fixedly connected with the two working parts of the bidirectional cylinder; the clamping jaws clamp the upper ring when the working portions of the bidirectional cylinders are close to each other, and the clamping jaws release the upper ring when the working portions of the bidirectional cylinders are far away from each other.

The linear electric cylinder drives the clamping jaw to move along the extending direction of the opening.

And the third lifting cylinder drives the clamping jaw to move upwards.

As shown in fig. 10 to 14, the upper ring assembling apparatus includes a connecting plate 600 capable of moving up and down, and a tightening assembly 800 and an open ring assembly 900 fixedly connected to the connecting plate; the jacking assembly comprises a blocking component 810 which is used for jacking one side of the upper ring opposite to the notch of the upper ring and can move left and right; the open loop assembly comprises a bidirectional electric cylinder 910 capable of moving left and right and a clamping assembly 911 fixedly connected with two moving ends of the bidirectional electric cylinder respectively;

the upper ring assembling device clamps two notched ends of the upper ring through the clamping components respectively and keeps away from each other, the notches of the upper ring are opened, meanwhile, the blocking component can move towards one side away from the clamping components to enable the upper ring to be kept in a circular ring shape, the connecting plate moves downwards, and the clamping components are close to each other to enable the upper ring to be sleeved at the corresponding positions of the piston.

The upper ring of the piston comprises a first ring and a second ring; the upper ring 10 is provided with a gap 11, so that the upper ring has two gap ends 12 opposite to the gap.

Two-way electric jar has two to remove the end, clamping component is total two and respectively with two removal end fixed connection, two removal ends of two-way electric jar can be close to each other and keep away from, can realize the expansion and the shrink of upper portion ring internal diameter.

Through the matching of the clamping assembly and the blocking part, when the clamping assembly expands the gap of the piston ring, the blocking part moves backwards at the same time, so that the inner diameter of the upper ring can be expanded, the roundness of the upper ring can be ensured, and the deformation of the upper ring is avoided; after the internal diameter of upper portion ring expands, the outside of emboliaing the piston that can be very convenient, the connecting plate drives tight subassembly in top and the ring-opening subassembly downstream this moment, and when the upper portion ring removed the same height of upper portion ring draw-in groove, clamping components were close to each other, installed the upper portion ring to the upper portion ring draw-in groove in, realized the automatic equipment of upper portion ring, and packaging efficiency is high, does not have artifical the participation, and equipment precision and uniformity are better.

As shown in fig. 14, the clamping assembly includes a connecting block 911-1 fixedly connected to the moving end of the bidirectional electric cylinder, a V-shaped slot 911-2 is opened at one side of the connecting block close to the blocking member 810, the ends of the two V-shaped slots having larger openings are arranged in opposite directions.

V type draw-in groove transversely sets up, and the great one end of two V type draw-in grooves openings has opposite orientation, and two notch ends of upper portion ring are placed respectively in two V type draw-in grooves, can realize expanding the breach of upper portion ring.

The invention further comprises a first straight line module 610 which is vertically arranged, and the moving end of the first straight line module is fixedly connected with the connecting plate 600.

The first linear module is used for driving the connecting plate to move up and down.

As shown in fig. 10, the tightening assembly includes a first cylinder 820 disposed along the left-right direction, and a moving end of the first cylinder is fixedly connected to the blocking member.

The first air cylinder can drive the blocking component to move left and right, and when the clamping assembly expands the gap, the first air cylinder drives the blocking component to move to one side far away from the clamping assembly, so that the roundness of the upper ring is ensured; when the clamping components are close to each other and the inner diameter of the upper ring is contracted, the first air cylinder drives the blocking component to move towards one side close to the clamping components, and the upper ring is prevented from falling.

As shown in fig. 12, the blocking member includes two tightening rods 811 arranged in the front-rear direction, a roller 812 rotatably connected to the tightening rods is arranged at the bottom of the tightening rods, and a ring groove is formed in the circumferential direction of the roller.

The upper ring is clamped in the ring groove, so that the upper ring can be prevented from falling off; when the internal diameter of upper portion ring expanded, the relative position of tightening rod and upper portion ring can change, can take place to slide between upper portion ring and the tightening rod, and the gyro wheel can reduce the friction between the two, reduces the wearing and tearing to upper portion ring.

As shown in fig. 10, the open loop assembly includes a second cylinder 920 disposed in the left-right direction; the moving end of the second cylinder is fixedly connected with the bidirectional electric cylinder, and the fixed end of the second cylinder is connected to one side of the connecting plate 600; the open loop assembly further includes a lift cylinder 930; the moving end of the lifting cylinder is fixedly connected with the fixed end of the second cylinder 920, and the fixed end is fixedly connected with the connecting plate 600; including the second straight line module 620 that sets up along left right direction, the removal end of second straight line module and the stiff end fixed connection of first straight line module 610.

And a certain amount of gas is filled in the third cylinder, and when the clamping jaw collides with other parts, a certain buffering and protecting effect can be achieved.

The second linear module can drive the first linear module and the connecting plate to move in the left-right direction, and is used for moving the clamping assembly and the jacking rod to the upper ring distributing device to clamp a single upper ring to complete feeding.

The second cylinder can drive the clamping component to be far away from or close to the jacking rod.

As shown in fig. 2 and 9, the upper ring material distribution device further includes a bearing platform disposed at one end of the platform, the bearing platform is disposed away from the first material storage column, the bearing platform includes two symmetrically disposed bearing plates 120, the upper surfaces of the bearing plates are flush with the upper surface of the platform, the inner sides of the bearing plates are disposed with bumps 121, a bump gap is formed between the two bumps, a bearing plate gap is formed between the bearing plates, and the bump divides the bearing plate gap into two object placing spaces 122.

The clamping jaw drives the upper ring to translate to the bearing platform through the gap between the opening and the bump, the second linear module drives the clamping component and the puller rod to move to other stations, the second cylinder enables the clamping component to be far away from the puller rod, the first linear module moves downwards, the puller rod and the clamping component respectively descend into the object placing space 122, the V-shaped clamping groove, the ring groove on the roller and the upper ring are located on the same horizontal plane, the second cylinder enables the clamping component to be close to the puller rod, two notched ends of the upper ring respectively enter the two V-shaped ring grooves, and one side of the upper ring, which is opposite to the notch, enters the ring groove on the roller to complete loading and clamping; the second linear module drives the upper ring to move above the piston, thereby completing the subsequent assembly steps.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The piston upper ring distributing and assembling device is characterized by comprising an upper ring distributing device and an upper ring assembling device, wherein the upper ring distributing device separates a single upper ring in a direct clamping manner;

the upper ring assembling device comprises a connecting plate (600) capable of moving up and down, and a jacking assembly (800) and an open ring assembly (900) which are fixedly connected with the connecting plate; the jacking assembly comprises a blocking component (810) which is used for jacking the upper ring, is positioned on one side opposite to the notch of the upper ring and can move left and right; the open loop assembly comprises a bidirectional electric cylinder (910) capable of moving left and right and a clamping assembly (911) fixedly connected with two moving ends of the bidirectional electric cylinder respectively;

2. The piston upper ring separating and assembling device according to claim 1, wherein: the clamping assembly comprises a connecting block (911-1) fixedly connected with the moving end of the bidirectional electric cylinder, one side, close to the blocking component (810), of the connecting block is provided with V-shaped clamping grooves (911-2) arranged along the front-back direction, and one ends, with larger openings, of the two V-shaped clamping grooves are arranged in the opposite direction.

3. The piston upper ring separating and assembling device according to claim 1, wherein: including vertical first straight line module (610) that sets up, the removal end and the connecting plate (600) fixed connection of first straight line module.

4. The piston upper ring separating and assembling device according to claim 1, wherein: the jacking assembly comprises a first air cylinder (820) arranged along the left-right direction, and the moving end of the first air cylinder is fixedly connected with the blocking component.

5. The piston upper ring separating and assembling device according to claim 1, wherein: the blocking component comprises two tightening rods (811) arranged along the front-rear direction, rollers (812) connected with the tightening rods in a rotating mode are arranged at the bottoms of the tightening rods, and annular grooves are formed in the circumferential direction of the rollers.

6. The piston upper ring separating and assembling device according to claim 1, wherein: the open loop assembly comprises a second cylinder (920) arranged along the left-right direction; the moving end of the second cylinder is fixedly connected with the bidirectional electric cylinder, and the fixed end of the second cylinder is connected to one side of the connecting plate (600); the open loop assembly further comprises a lift cylinder (930); the removal end of lift cylinder and the stiff end fixed connection of second cylinder (920), and stiff end and connecting plate (600) fixed connection.

7. The piston upper ring separating and assembling device according to claim 3, wherein: including the second straight line module (620) that sets up along left right direction, the removal end of second straight line module and the stiff end fixed connection of first straight line module (610).

8. The piston upper ring separating and assembling device according to claim 1, wherein: the upper ring distribution device comprises a platform (100), a first material storage column (200) and a second material storage column (300) which are fixedly arranged on the upper surface of the platform and used for placing an upper ring, a lifting plate (410) which is arranged on the lower portion of the second material storage column and can move up and down, and a clamping jaw (540) which can clamp the upper ring and move along the long edge direction of the platform, wherein the distances between the bottom surface of the first material storage column and the bottom surface of the second material storage column and the upper surface of the platform are both greater than the height of one upper ring and less than the heights of two upper rings; the lifting plate can lift the upper ring of the second material storage column before the clamping jaws clamp the upper ring of the lowermost layer of the first material storage column and move transversely to the bottom of the second material storage column; the lifting plate is capable of moving downwardly and bringing the lowermost upper ring into contact with the upper surface of the platform before the clamping jaws clamp the lowermost upper ring of the second storage column.

9. The piston upper ring separating and assembling device according to claim 8, wherein: the bottom of the first material storage column (200) and the bottom of the second material storage column (300) are fixedly provided with positioning plates, and the distance between the bottom surface of each positioning plate and the upper surface of the platform is larger than the height of one upper ring and smaller than the height of two upper rings.

10. The piston upper ring separating and assembling device according to claim 9, wherein: the first material storage column and the second material storage column respectively comprise a connecting column (220) which is vertically arranged, an upper end plate (230) which is horizontally arranged, a guide plate (240) which is used for positioning a notch of an upper ring and is vertically arranged, and a fixing column (250); one end of the connecting column is fixedly connected with the lower surface of the upper end plate, and the other end of the connecting column is fixedly connected with the upper surface of the positioning plate; one end of the guide plate is fixedly connected with the upper end plate, and the other end of the guide plate is fixedly connected with the positioning plate; one end of the fixing column is fixedly connected with the upper surface of the platform (100), and the other end of the fixing column is fixedly connected with the guide plate.