Assembly device

Abstract

The utility model discloses an assembling device which comprises a first driving mechanism and a second driving mechanism arranged at the output end of the first driving mechanism, a plurality of clamping jaws are arranged on the second driving mechanism, the second driving mechanism can enable the clamping jaws to be close to or separated from one another so as to grab O-shaped rings, and the positioning assembling device further comprises a stripping mechanism. The stripping mechanism comprises a stop piece, and the stop piece can enable the O-shaped ring to be separated from the clamping jaw and slide to the valve rod. The O-shaped ring is limited and accurately positioned through the stripping mechanism, when assembling is needed, the first driving mechanism can be used for feeding, the second driving mechanism drives the clamping jaw to grab the O-shaped ring, then the first driving mechanism drives the clamping jaw to move, a stop piece of the stripping mechanism can be used for limiting, and the clamping jaw can be used for clamping the O-shaped ring. Therefore, the O-shaped ring is separated from the clamping jaw and slides onto the valve rod, the assembling efficiency of the O-shaped ring is improved, the whole structure is simple and reasonable, the production cost is reduced, large-scale assembling operation is facilitated, and the O-shaped ring clamping device has good market application value.

Description

TECHNICAL FIELD

[0001] The utility model belongs to O type ring assembly field, especially related to an assembly device. BACKGROUND

[0002] O type ring is widely used, and plays a sealing role. In the production process of a water meter valve body, O type rings need to be assembled on some valve stems. Since there is a size difference between the groove for assembling the O type ring on the valve stem and the part itself, the O type ring needs to be first expanded and then assembled during assembly.

[0003] The existing expansion device generally uses clamping jaws in combination with a cylinder for feeding and discharging. The O type ring to be expanded is first expanded by a clamping jaw cylinder, then transported to an assembly position by a servo module after expansion is completed, and then the O type ring is pushed away from the clamping jaw by a telescopic cylinder. The clamping jaw cylinder is retracted to the original position, and the stripper plate pops the O type ring onto the corresponding position of the valve stem. However, the existing valve body O type ring assembly equipment has low working efficiency, lacks a high-precision positioning system after the O type ring is expanded, which may cause the O type ring to be placed inaccurately, requires manual intervention during the assembly process, and is prone to errors, resulting in low production efficiency, low compatibility, and other problems.

[0004] Therefore, there is an urgent need to design an assembly device to solve the above-mentioned technical problems of low efficiency, high cost, and inconvenience of mass assembly of the O type ring in the prior art. SUMMARY

[0005] To solve the technical problems of low efficiency, high cost, and inconvenience of mass assembly of the O type ring mentioned in the background art, an assembly device is provided.

[0006] To achieve the above-mentioned purposes, the specific technical solutions of the positioning and assembly device of the utility model are as follows:

[0007] An assembly device for mounting an O type ring on a valve stem includes a first drive mechanism and a second drive mechanism disposed at the output end of the first drive mechanism. A plurality of clamping jaws are disposed on the second drive mechanism. The second drive mechanism can cause the plurality of clamping jaws to approach or separate from each other to grasp the O type ring. The positioning and assembly device further includes a stripper mechanism. The stripper mechanism includes a stopper. The stopper can cause the O type ring to separate from the clamping jaws and slide onto the valve stem.

[0008] Further, the stripper mechanism includes a stripper. A through hole is disposed on the stripper. A stopper is disposed on the side of the through hole. The clamping jaw can extend into the through hole and grasp the O type ring.

[0009] Further, the stopper is provided with a slope. The slope is disposed away from the stripper.

[0010] Further, the stripping mechanism further comprises a limiting piece, the limiting piece is arranged at intervals with the stop piece and is connected through the connecting column, the limiting piece is provided with an avoiding hole, so that the valve rod and the clamping jaw are close to each other.

[0011] Further, the connecting column is provided with multiple groups and is symmetrically arranged at different positions of the stop piece.

[0012] Further, the limiting piece comprises a limiting base body and an anti-escape part connected with the limiting base body, the avoiding hole is arranged on the anti-escape part, and the anti-escape part is used for enabling the O-shaped ring to be located between the limiting piece and the stop piece.

[0013] Further, the thickness of the anti-escape part is less than the thickness of the limiting base body, so that an avoiding space is formed between the anti-escape part and the limiting base body, and the clamping jaw can clamp the O-shaped ring and be located in the avoiding space.

[0014] Further, the positioning assembly device further comprises a connecting plate, the connecting plate is sleeved on the first driving mechanism, a guide shaft is arranged between the connecting plate and the stripping piece, and the guide shaft is used for guiding the second driving mechanism to move linearly.

[0015] Further, the connecting plate comprises a first connecting part and a second connecting part, the first connecting part and the second connecting part are arranged perpendicularly, and the second connecting part is sleeved on the first driving mechanism.

[0016] Further, the positioning assembly device further comprises a moving piece, the moving piece is arranged on the guide shaft at intervals with the connecting plate, the moving piece is sleeved on the guide shaft and is connected with the second moving mechanism, the moving piece can slide relative to the guide shaft, and the guide shaft is used for guiding the moving piece to move towards the stripping piece.

[0017] The assembly device has the following advantages: the stripping mechanism is used for limiting and accurately positioning the O-shaped ring, when assembly is needed, the first driving mechanism is used for feeding, the second driving mechanism drives the clamping jaw to grab the O-shaped ring, then the first driving mechanism drives the clamping jaw to move, so that the stop piece of the stripping mechanism can be limited, thereby the O-shaped ring is separated from the clamping jaw and slides to the valve rod, the efficiency of O-shaped ring assembly is improved, the overall structure is more simple and reasonable, compact and orderly, the production cost is reduced, mass assembly operation is facilitated, and good market application value is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic view of the assembly device of the utility model;

[0019] Figure 2 FIG. 2 is a side view of the assembly device of the utility model;

[0020] Figure 3 FIG. 3 is a structural schematic view of another view of the assembly device of the utility model;

[0021] Figure 4 For Figure 3 A local enlarged view at middle A.

[0022] Legend in the figure:

[0023] 1, first driving mechanism; 2, second driving mechanism; 21, clamping jaw; 3, stripping mechanism; 31, stripping piece; 32, through hole; 33, stop piece; 34, limiting piece; 341, limiting base body; 342, anti-dropping part; 343, avoiding hole; 35, connecting column; 36, avoiding space; 4, connecting plate; 41, first connecting part; 42, second connecting part; 5, guide shaft; 6, moving piece;

[0024] 100, O-ring; 200, valve stem. DETAILED DESCRIPTION

[0025] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0026] Those skilled in the art can understand that, although some embodiments herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0027] The embodiments will be described below in connection with the drawings. Figure 1 to the drawings Figure 4 A kind of assembly device of the present application is described.

[0028] Figure 1 It is structural schematic view of the assembly device of the present application; Figure 2 It is side view of the assembly device of the present application;

[0029] The present embodiment provides a kind of assembly device, for installing O-type ring 100 on valve stem 200, as shown in Figure 1 And Figure 2As shown, the assembly device comprises a first driving mechanism 1 and a second driving mechanism 2 arranged at the output end of the first driving mechanism 1, a plurality of clamping jaws 21 are arranged on the second driving mechanism 2, the second driving mechanism 2 can make the plurality of clamping jaws 21 close to or separate from each other to grab the O-ring 100, and the positioning assembly device further comprises a stripping mechanism 3, the stripping mechanism 3 comprises a stop piece 33, the stop piece 33 can make the O-ring 100 separate from the clamping jaw 21 and slide onto the valve stem 200.

[0030] The stop piece 33 of the stripping mechanism 3 can be limited and accurately positioned on the O-ring 100, when assembly is needed, the first driving mechanism 1 can be fed, the second driving mechanism 2 drives the clamping jaw 21 to grab the O-ring 100, then the first driving mechanism 1 drives the clamping jaw 21 to move, so that the stop piece 33 of the stripping mechanism 3 can be limited, thereby making the O-ring 100 separate from the clamping jaw 21 and slide onto the valve stem 200, which not only improves the efficiency of the O-ring 100 assembly, but also makes the overall structure more simple and reasonable, compact and orderly, reduces the production cost, facilitates mass assembly operation, and has good market application value.

[0031] Specifically, the first driving mechanism 1 can be configured as a lifting cylinder, and the second driving mechanism 2 can be configured as a four-jaw cylinder, when material is needed, the lifting cylinder of the assembly device is in the extended state, when reaching the material taking place, the clamping jaw 21 of the four-jaw cylinder extends into the O-ring 100, the clamping jaw 21 opens to take out the O-ring 100, then the assembly device is driven to move to the vicinity of the valve stem 200, when reaching the material placing position, the lifting cylinder starts to retract, thereby driving the four-jaw cylinder and the clamping jaw 21 to retract, the O-ring 100 is separated from the clamping jaw 21 under the block of the stop piece 33, the O-ring 100 is installed to the installation position of the corresponding valve stem 200, and the material taking and assembly of the O-ring 100 are completed.

[0032] Figure 3 It is a structure schematic view of another view angle of the assembly device of the utility model; Figure 4 It is Figure 3 It is a local enlarged view of A in the middle.

[0033] Further, as shown in Figure 3 and Figure 4 The stripping mechanism 3 comprises a stripping piece 31, a through hole 32 is arranged on the stripping piece 31, the stop piece 33 is arranged on the side of the through hole 32, and the clamping jaw 21 can extend into the through hole 32 and grab the O-ring 100.

[0034] Further, the stop piece 33 is provided with an inclined surface, and the inclined surface is arranged at a position away from the stripping piece 31.

[0035] Further, as shown in Figure 3 and Figure 4As shown, the stripping mechanism 3 further comprises a limiting piece 34, which is arranged in a spaced manner with the stop piece 33 and is connected through a connecting column 35. The limiting piece 34 is provided with an avoiding hole 343, so as to make the valve rod 200 and the clamping jaw 21 close to each other.

[0036] The arrangement of the inclined surface can make the assembly device clamp different specifications of O-rings 100. For example, when the O-ring 100 is large in specification, the inclined surface can avoid the O-ring 100 from being separated from the stripping mechanism 3, so that the O-ring 100 is stopped between the limiting piece 34 and the stop piece 33 under the action of the inclined surface, thereby ensuring the operation stability of the assembly device and improving the adaptability of the assembly device to different specifications of O-rings 100.

[0037] Further, the connecting column 35 is provided with multiple groups and is symmetrically arranged at different positions of the stop piece 33. The multiple groups of connecting columns 35 can further ensure the connecting strength between the stop piece 33 and the limiting piece 34, thereby further ensuring the operation stability of the assembly device. In addition, when different specifications of O-rings 100 need to be adapted, different limiting pieces 34 can be replaced by the worker according to the needs and the different connecting columns 35, thereby further improving the applicability of the positioning device.

[0038] Further, as shown in Figure 4 The limiting piece 34 comprises a limiting base body 341 and an anti-disengagement part 342 connected with the limiting base body 341. The avoiding hole 343 is arranged on the anti-disengagement part 342, and the anti-disengagement part 342 is used to make the O-ring 100 located between the limiting piece 34 and the stop piece 33.

[0039] Optionally, the thickness of the anti-disengagement part 342 is smaller than the thickness of the limiting base body 341, so as to form an avoiding space 36 between the anti-disengagement part 342 and the limiting base body 341. The clamping jaw 21 can clamp the O-ring 100 and be located in the avoiding space 36.

[0040] The anti-disengagement part 342 can avoid the O-ring 100 from being separated from the installation position of the valve rod 200 due to the too fast retraction speed of the first driving mechanism 1. The arrangement of the avoiding space 36 not only gives a certain degree of buffer, but also limits the O-ring 100 separated from the clamping jaw 21 to a certain extent, so as to ensure that the O-ring 100 will not be separated from the avoiding space 36, realize the installation of the O-ring 100, and ensure the installation precision.

[0041] Further, as shown in Figure 1 and Figure 2 The positioning assembly device further comprises a connecting plate 4, which is sleeved on the first driving mechanism 1. The connecting plate 4 and the stripping piece 31 are provided with a guide shaft 5, which is used to guide the second driving mechanism 2 to move in a straight line.

[0042] Further, the connecting plate 4 comprises a first connecting part 41 and a second connecting part 42, the first connecting part 41 and the second connecting part 42 are vertically arranged, and the second connecting part 42 is sleeved on the first driving mechanism 1.

[0043] Further, the positioning assembly further comprises a moving piece 6, the moving piece 6 is arranged on the guide shaft 5 and spaced from the connecting plate 4, the moving piece 6 is sleeved on the guide shaft 5 and connected with the second moving mechanism, the moving piece 6 can slide relative to the guide shaft 5, and the guide shaft 5 is used for guiding the moving piece 6 to move towards the material removing piece 31.

[0044] The guide shaft 5 is used for guiding the clamping jaw 21, so that the feeding direction of the second driving mechanism 2 and the clamping jaw 21 is ensured,

[0045] In the embodiment, the second driving mechanism 2 drives the clamping jaw 21 to move, the clamping jaw 21 moves into the O-shaped ring 100, and the clamping jaw 21 is expanded under the action of the second driving mechanism 2, so as to facilitate the sleeving of the O-shaped ring 100 on the installation position of the valve rod 200, during which, the first driving mechanism 1 can drive the second driving mechanism 2 and the clamping jaw 21, and the O-shaped ring 100 on the clamping jaw 21 to move up and down, since the stopper 33 is arranged at the through hole 32 of the material removing piece 31, the clamping jaw 21 can drive the expanded O-shaped ring 100 to move to the vicinity of the valve rod 200, since the O-shaped ring 100 is in the expanded state, the first driving mechanism 1 is retracted, and the second driving mechanism 2 and the clamping jaw 21 move under the action of the first driving mechanism 1, at this time, the O-shaped ring 100 is pushed to fall to the installation position of the valve rod 200 by the stopper 33 at the through hole 32 of the material removing piece 31.

[0046] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or changes can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.

Claims

1. An assembly device for mounting an O-ring onto a valve stem, characterized in that, The device includes a first drive mechanism and a second drive mechanism located at the output end of the first drive mechanism. The second drive mechanism is equipped with multiple grippers that can bring the grippers closer together or separate to grip the O-ring. The positioning and assembly device also includes a stripping mechanism that includes a stop that can cause the O-ring to disengage from the grippers and slide onto the valve stem.

2. The positioning and assembly device according to claim 1, characterized in that, The stripping mechanism includes a stripping component with a through hole and a stop on the periphery of the through hole. The grippers can extend into the through hole and grab the O-ring.

3. The positioning and assembly device according to claim 2, characterized in that, The stop is provided with an inclined surface, which is located away from the stripper.

4. The positioning and assembly device according to claim 2, characterized in that, The unloading mechanism also includes a limiting component, which is spaced apart from the stop component and connected by a connecting column. The limiting component is provided with a clearance hole to allow the valve stem and the gripper to approach each other.

5. The positioning and assembly device according to claim 4, characterized in that, Multiple sets of connecting columns are provided, symmetrically arranged at different positions of the stop member.

6. The positioning and assembly device according to claim 4, characterized in that, The limiting component includes a limiting base and an anti-detachment part connected to the limiting base. A clearance hole is provided on the anti-detachment part, which is used to position the O-ring between the limiting component and the stop component.

7. The positioning and assembly device according to claim 6, characterized in that, The thickness of the anti-slip part is less than the thickness of the limiting base, so that a clearance space is formed between the anti-slip part and the limiting base, and the gripper can hold the O-ring and be located within the clearance space.

8. The positioning and assembly device according to any one of claims 1-7, characterized in that, The positioning assembly device also includes a connecting plate, which is sleeved on the first drive mechanism. A guide shaft is provided between the connecting plate and the stripper, and the guide shaft is used to guide the second drive mechanism to move in a straight line.

9. The positioning and assembly device according to claim 8, characterized in that, The connecting plate includes a first connecting part and a second connecting part, which are arranged vertically, and the second connecting part is sleeved on the first driving mechanism.

10. The positioning and assembly device according to claim 8, characterized in that, The positioning assembly device also includes a movable component, which is spaced apart from the connecting plate on the guide shaft. The movable component is sleeved on the guide shaft and connected to the second moving mechanism. The movable component can slide relative to the guide shaft, and the guide shaft is used to guide the movable component to move towards the stripper.

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