Piston ring taking and placing mechanism

Abstract

The utility model belongs to the technical field of piston rings, and relates to a taking and placing mechanism of a piston ring, which comprises a connecting main body, a longitudinal penetrating through hole is formed in the connecting main body, a plurality of through grooves are formed in the lower part of the connecting main body along the axis of the penetrating through hole, and a clamping jaw is formed between every two adjacent through grooves; a matching groove is formed in the inner side of the end part of each clamping jaw; the guide rod is movably arranged in the penetrating through hole in a penetrating manner; a guide block is formed at the lower end of the guide rod; a clamping space for the nylon piston ring is formed between the lower end part of the guide block and the matching groove; the elastic piece is arranged on the guide rod in a sleeving manner; the elastic piece is positioned between the guide block and the first limiting piece on the connecting main body; the elastic limiting piece is arranged on the outer sides of the multiple clamping jaws in a sleeving mode. After the structure is adopted, the device has the beneficial effects that the device is accurately guided by the elastic floating guide rod, and the guide block of the guide rod internally supports the nylon piston ring and expands the nylon piston ring, so that the clamping effect of the clamping jaw is achieved; and clamping is convenient, and operation is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of piston ring technology, specifically, it relates to a piston ring picking and placing mechanism. Background Technology

[0002] During the assembly of nylon piston rings into the piston cylinder, the initial feeding state is set as a closed loop. However, due to the inherent elasticity of nylon, it easily transforms into an open loop state before or during assembly. Furthermore, nylon piston rings are small and lightweight; manual movement and assembly would severely impact production efficiency. Therefore, how to improve the automation level of nylon piston ring assembly while ensuring assembly accuracy and reducing scrap rates is a pressing issue that needs to be addressed. Utility Model Content

[0003] To address the aforementioned problems in the prior art, this utility model provides a piston ring picking and placing mechanism that is simple in structure, easy to operate, and highly practical.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] As one aspect of this utility model, a piston ring picking and placing mechanism is proposed, comprising: a connecting body, wherein a longitudinally arranged through hole is provided in the connecting body, and a plurality of through grooves are provided in the lower part of the connecting body along the axis of the through hole, and a gripper is formed between two adjacent through grooves; a mating groove is formed on the inner side of the end of each gripper.

[0006] A guide rod is movably inserted into a through hole; a guide block is formed at the lower end of the guide rod, the diameter of the guide block is larger than the diameter of the through hole, and the guide block supports several grippers; a clamping space for a nylon piston ring is formed between the lower end of the guide block and the mating groove.

[0007] An elastic element is fitted onto the guide rod; the elastic element is located between the guide block and the first limiting element on the connecting body.

[0008] The elastic limiting element is sleeved on the outside of several grippers.

[0009] Optionally, the connecting body includes a first connector and a second connector that are connected to each other, and a through hole that passes through the first connector and the second connector; the through groove and the gripper are located on the first connector, and the first limiting member is connected to the second connector.

[0010] Optionally, the first connector has a connecting protrusion, the second connector has a fixing ring, and the upper end of the second connector is connected to the fixing ring; the fixing ring and the connecting protrusion are detachably connected.

[0011] Optionally, a travel limiting groove is provided in the upper middle part of the guide rod, and the first limiting member passes through the travel limiting groove.

[0012] Optionally, the guide block is provided with a plurality of clearance grooves spaced apart.

[0013] Optionally, the outer side of the gripper is formed with a mounting portion for mounting the elastic limiting member.

[0014] Optionally, the end of the mating groove is formed with a first guide ramp.

[0015] Optionally, a second guide ramp is formed at the lower end of the guide block.

[0016] The advantages of the piston ring picking and placing mechanism of this utility model are specifically reflected in the following aspects: it relies on the elastic floating guide rod to accurately guide the piston ring, and the guide block of the guide rod supports the nylon piston ring, expanding the nylon piston ring to achieve the clamping effect of the grippers; it is convenient to pick up and easy to operate. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0018] Figure 1 This is a schematic diagram of the piston ring picking and placing mechanism of this utility model;

[0019] Figure 2 This is a cross-sectional view of the piston ring picking and placing mechanism of this utility model.

[0020] Figure 3 This is an exploded view of the piston ring picking and placing mechanism of this utility model;

[0021] Figure 4 This is an exploded view of the piston ring picking and placing mechanism of this utility model. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] One embodiment of this application provides a piston ring pick-and-place mechanism, such as... Figures 1-3As shown, it includes: a connecting body 1, in which a longitudinally arranged through hole 11 is provided; a plurality of through grooves 12 are provided on the lower part of the connecting body 1 along the axis of the through hole 11, the through grooves 12 extending to the lower end of the connecting body 1; a gripper 13 is formed between two adjacent through grooves 12, and the gripper 13 formed in this way is elastic and convenient for gripping.

[0024] Each clamping jaw 13 has a mating groove 14 formed on the inner side of its end. Several mating grooves 14 form a circle to mate with the outer ring of the nylon piston ring 3. The end of the mating groove 14 has a first guide ramp 15, which is inclined outward to allow the outer ring of the nylon piston ring 3 to enter the mating groove 14.

[0025] A guide rod 2 is movably inserted into the through hole 11; a guide block 21 is formed at the lower end of the guide rod 2, the diameter of the guide block 21 is slightly larger than the diameter of the through hole 11, and the guide block 21 supports several grippers 13; a clamping space for the nylon piston ring 3 is formed between the lower end of the guide block 21 and the mating groove 14; a second guide ramp 22 is formed at the lower end of the guide block 21, the second guide ramp 22 is inclined inward to facilitate the inner ring of the nylon piston ring 3 to enter the guide block 21, thereby realizing the clamping of the nylon piston ring 3;

[0026] The elastic element 4 is sleeved on the guide rod 2. As an example, the elastic element 4 is a spring. The elastic element 4 is located between the guide block 21 and the first limiting element 5 on the connecting body 1. When the guide rod 2 moves upward, the elastic element 4 is compressed, and the guide block 21 rises accordingly. Under the limiting of the mating groove 14, the inner ring of the nylon piston ring 3 separates from the guide block 21 and enters the preset piston cylinder, realizing the falling of the nylon piston ring 3. The rising height of the guide block 21 is only enough to make the nylon piston ring 3 fall. Then, the guide block 21 returns to its original position under the action of the elastic element 4 to clamp the next nylon piston ring 3.

[0027] An elastic limiting member 6 is sleeved on the outside of several grippers 13. Because the guide block 21 expands the grippers 13, the grippers 13 need to have clamping force. Therefore, an elastic limiting member 6 is provided on the outside of the grippers 13. The elastic limiting member 6 is an O-ring to ensure that the nylon piston ring 3 is clamped. The elastic limiting member 6 limits the opening range of the grippers 13. The outside of the grippers 13 has a mounting part 131 for mounting the elastic limiting member 6. The mounting part 131 is a groove that matches the O-ring.

[0028] In one embodiment, in order to reduce the contact area between the guide block 21 and the inner ring of the nylon piston ring 3, a plurality of clearance grooves 23 are provided on the guide block 21 at intervals.

[0029] In one embodiment, the first limiting member 5 is a limiting rod, which is transversely inserted through the connecting body 1 to limit the elastic member 4.

[0030] In one embodiment, such as Figures 3-4 As shown, a travel limiting groove 24 is provided in the upper middle part of the guide rod 2. The first limiting member 5 passes through the travel limiting groove 24 and limits the travel of the guide member 2 to prevent the guide member 2 from moving excessively.

[0031] In one embodiment, such as Figure 4 As shown, in order to facilitate the processing and installation of the connecting body 1, the connecting body 1 includes a first connecting member 16 and a second connecting member 17 that are connected to each other, and a through hole 11 that passes through the first connecting member 16 and the second connecting member 17; the through groove 12 and the gripper 13 are located on the first connecting member 16, and the first limiting member 5 is connected to the second connecting member 17.

[0032] In one embodiment, such as Figure 4 As shown, a connecting protrusion 161 is formed on the first connector 16, and a fixing ring 171 is connected to the second connector 17. The upper end of the second connector 17 is connected to the fixing ring 171 by a fastener. The fixing ring 171 and the connecting protrusion 161 are detachably connected by a fastener, thereby realizing the connection between the first connector 16 and the second connector 17.

[0033] In this embodiment, the gripper 13 moves downwards, and the mating groove 14 of the gripper 13 and the guide block 21 engage to grip the nylon piston ring 3. The gripper 13 is made of 65Mn. As a spring steel, 65Mn has outstanding elastic properties and can quickly return to its original shape after deformation. It also has a certain degree of toughness, which can absorb energy when subjected to impact loads and reduce the risk of fracture. However, compared with some specialized toughness materials, its toughness is not the most outstanding. It also has good machinability, making it easy to machine and capable of manufacturing various shapes and sizes. The O-ring effectively controls the clamping force on the nylon piston ring. The elastic floating guide rod 2 guides it accurately. The guide block 21 of the guide rod 2 supports the nylon piston ring 3, causing the nylon piston ring 3 to expand and achieve the clamping effect of the gripper 13. After clamping to the preset position, when the guide rod 2 moves upward, the elastic element 4 is compressed, and the guide block 21 rises accordingly. Under the limit of the mating groove 14, the inner ring of the nylon piston ring 3 separates from the guide block 21 and enters the preset piston cylinder, realizing the lowering of the nylon piston ring 3.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0036] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0037] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0038] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A piston ring picking and placing mechanism, characterized in that, It includes: connections The main body has a longitudinally arranged through hole, and the lower part of the main body has several through slots along the axis of the through hole, with a clamping claw formed between two adjacent through slots; a mating groove is formed on the inner side of the end of each clamping claw. A guide rod is movably inserted into a through hole; a guide block is formed at the lower end of the guide rod, the diameter of the guide block is larger than the diameter of the through hole, and the guide block supports several grippers; a clamping space for a nylon piston ring is formed between the lower end of the guide block and the mating groove. An elastic element is fitted onto the guide rod; the elastic element is located between the guide block and the first limiting element on the connecting body. The elastic limiting element is sleeved on the outside of several grippers.

2. The piston ring picking and placing mechanism as described in claim 1, characterized in that, The connecting body includes a first connector and a second connector that are connected to each other, and a through hole that passes through the first connector and the second connector; the through groove and the gripper are located on the first connector, and the first limiting member is connected to the second connector.

3. The piston ring picking and placing mechanism as described in claim 2, characterized in that, The first connector has a connecting protrusion, the second connector has a fixing ring, and the upper end of the second connector is connected to the fixing ring; the fixing ring and the connecting protrusion are detachably connected.

4. The piston ring picking and placing mechanism as described in claim 1, characterized in that, The guide rod has a travel limit groove in its upper middle part, and the first limiting member passes through the travel limit groove.

5. The piston ring picking and placing mechanism as described in claim 1, characterized in that, The guide block is provided with several clearance grooves spaced apart.

6. The piston ring picking and placing mechanism as described in claim 1, characterized in that, The outer side of the gripper has a mounting portion for installing the elastic limiting member.

7. The piston ring picking and placing mechanism as described in claim 1, characterized in that, The end of the mating groove is formed with a first guide slope.

8. The piston ring picking and placing mechanism as described in claim 1, characterized in that, A second guide ramp is formed at the lower end of the guide block.

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