CN115533478A

CN115533478A - Sealing ring assembling machine

Info

Publication number: CN115533478A
Application number: CN202211341658.XA
Authority: CN
Inventors: 宣永昌; 宣煌波
Original assignee: HANGZHOU YONGCHANG GLASS MACHINERY CO Ltd
Current assignee: HANGZHOU YONGCHANG GLASS MACHINERY CO Ltd
Priority date: 2022-10-30
Filing date: 2022-10-30
Publication date: 2022-12-30

Abstract

The invention discloses a sealing ring assembling machine which comprises a turntable, a sealing ring loading station, an outer O-shaped ring mounting station, an inner O-shaped ring mounting station and a discharging station, wherein the turntable is provided with a plurality of sealing ring placing seats, and the sealing ring loading station, the outer O-shaped ring mounting station, the inner O-shaped ring mounting station and the discharging station are distributed along the circumferential outer side of the turntable; a sealing ring feeding manipulator is arranged at a sealing ring feeding station; the outer O-shaped ring mounting station is provided with a multi-claw supporting and clamping manipulator, the multi-claw supporting and clamping manipulator is provided with a group of clamping claws capable of expanding or contracting along the radial direction and a group of material returning claws capable of moving along the axial direction, and the clamping claws are staggered with the claw positions of the material returning claws; and a vacuum suction manipulator is arranged at the installation station of the inner O-shaped ring. According to the invention, the automatic assembly of the sealing ring is realized through reasonable design, the assembly efficiency is greatly improved, the labor cost is reduced compared with manual assembly, and meanwhile, the assembly quality can be ensured.

Description

Sealing ring assembling machine

Technical Field

The invention relates to the technical field of automatic assembly of safety valves, in particular to a sealing ring assembling machine.

Background

The safety valve is a more special valve, and the particularity is that the safety valve only plays a role of opening and closing unlike other valves, and more importantly plays a role of protecting equipment. The safety valve has precise and complex internal structure and is more cumbersome in installation process, and generally the components such as a sealing ring and the like need to be installed firstly and then are integrally assembled.

The sealing ring is used as an installation accessory of the safety valve, an outer O-shaped ring needs to be assembled on the outer ring of the sealing ring firstly during installation, an inner O-shaped ring needs to be assembled on the inner ring of the sealing ring, due to the fact that the size of a workpiece is small and the particularity of rubber materials is adopted, at present, a manual assembly mode is generally adopted, the assembly efficiency is low, the assembly quality is difficult to guarantee, and the automation level of safety valve assembly is influenced.

Disclosure of Invention

The invention aims to provide a sealing ring assembling machine which can realize accurate and rapid installation of a small-size O-shaped ring, so that the assembling efficiency is improved, and the labor cost is reduced.

In order to achieve the above purpose, the invention provides the following technical scheme:

the outer side of the sealing ring is provided with an outer O-shaped ring, and the inner side of the sealing ring is provided with an inner O-shaped ring; the sealing ring assembling machine comprises a turntable provided with a plurality of sealing ring placing seats, and a sealing ring feeding station, an outer O-shaped ring mounting station, an inner O-shaped ring mounting station and a discharging station which are distributed along the circumferential outer side of the turntable, wherein the turntable intermittently rotates to enable the sealing ring placing seats to sequentially correspond to the stations;

the sealing ring feeding station is provided with a sealing ring feeding manipulator which clamps the sealing ring into the corresponding sealing ring placing seat;

the installation station of the outer O-shaped ring is provided with a multi-claw supporting and clamping manipulator, the multi-claw supporting and clamping manipulator is provided with a group of clamping claws which can expand or contract along the radial direction and a group of material returning claws which can move along the axial direction, the clamping claws are staggered with the claw positions of the material returning claws, and after the clamping claws clamp the outer O-shaped ring above the corresponding sealing ring, the material returning claws downwards shift the outer O-shaped ring to the outer side of the sealing ring;

and the inner O-shaped ring mounting station is provided with a vacuum suction manipulator which sucks the inner O-shaped ring and then mounts the inner O-shaped ring to the inner side of the sealing ring.

Preferably, the sealing ring, the outer O-ring and the inner O-ring are fed separately through a vibrating disk.

Preferably, the material taking position of the multi-grabbing-supporting-clamping manipulator is provided with a material ejecting claw capable of pushing the outer O-shaped ring upwards, and the material ejecting claw corresponds to the clamping claw in a staggered mode.

Preferably, the number of the clamping jaws is 5-8.

Preferably, the vacuum suction manipulator comprises a suction pipe, a profiling curved surface matched with the surface of the inner O-shaped ring is arranged at the end of the suction pipe, and a plurality of suction holes are uniformly distributed in the profiling curved surface along the circumferential direction.

Preferably, the inner O-shaped ring mounting station is further provided with a blanking die located above the corresponding sealing ring placing seat, and the blanking die is provided with a wedge-shaped die hole with the bottom end corresponding to the middle of the sealing ring and the width being larger than the top and smaller than the bottom.

Preferably, an outer O-ring detection station is further arranged behind the outer O-ring installation station, an outer ring displacement sensor is arranged on the outer O-ring detection station, the measuring head profile of the outer ring displacement sensor is annular, and the diameter of the inner ring is larger than the outer diameter of the sealing ring and smaller than the outer diameter of the outer O-ring.

Preferably, an inner O-ring pressing station is further arranged behind the inner O-ring mounting station and comprises a material blocking rod arranged below the corresponding sealing ring placing seat and a pressing mechanism arranged above the corresponding sealing ring placing seat; the pressing mechanism comprises an outer pressing frame, an intermediate pressing pipe and an inner pressing rod, the outer pressing frame, the intermediate pressing pipe and the inner pressing rod are respectively driven by the air cylinder, the bottom surface of the outer pressing frame corresponds to the upper surface of the sealing ring, the intermediate pressing pipe corresponds to the inner side step surface of the sealing ring, and the inner pressing rod corresponds to the inner O-shaped ring.

Preferably, an inner O-shaped ring detection station is arranged in front of the discharging station, an inner ring displacement sensor is arranged at the inner O-shaped ring detection station, and a measuring head of the inner ring displacement sensor corresponds to the position of the inner O-shaped ring.

Preferably, the inner O-shaped ring detection station is provided with a defective product discharge blowpipe, and the discharge station is provided with a qualified product discharge blowpipe; and the ejection air cylinders are respectively arranged below the sealing ring placing seats corresponding to the inner O-shaped ring detection station and the discharge station.

Compared with the prior art, the invention has the advantages that:

1. according to the invention, the automatic assembly of the sealing ring is realized through reasonable design, the assembly efficiency is greatly improved, the labor cost is reduced compared with manual assembly, and meanwhile, the assembly quality can be ensured.

2. According to the invention, the accurate installation of the outer O-shaped ring is realized through the multi-claw supporting and clamping manipulator, the clamping and returning functions are realized, and in a preferred embodiment, a material taking mode with higher stability can be realized by matching with the material ejecting claw during material taking.

3. The suction pipe with the unique design is used for sucking the inner O-shaped ring, the material taking and discharging are convenient and fast, and the discharging is more accurate by arranging the discharging die.

4. The invention detects whether the inner O-shaped ring and the outer O-shaped ring are installed correctly through the displacement sensor, and automatically rejects defective products by corresponding the detection result with the work of the defective product discharge blow pipe and the qualified product discharge blow pipe.

Drawings

Fig. 1 is an exploded view of a seal ring according to the present invention.

Fig. 2 is a schematic view of the overall structure of the present invention.

FIG. 3 is a schematic diagram of the distribution of the stations of the present invention.

Fig. 4 is a schematic structural view of a seal ring feeding station in the present invention.

Figure 5 is a schematic structural view of an outer O-ring installation station of the present invention.

Fig. 6 is an enlarged schematic view at a in fig. 5.

Figure 7 is a partial schematic view of a multi-gripper robot of the present invention.

Fig. 8 is a schematic structural view of an outer O-ring detection station and an inner O-ring installation station in the present invention.

FIG. 9 is a schematic view showing the structure of the straw according to the present invention.

FIG. 10 is a perspective view of the straw of the present invention.

Fig. 11 is a perspective view of a blanking die in the present invention.

Fig. 12 is a schematic structural view of an inner O-ring pressing station in the present invention.

Figure 13 is a schematic diagram of an inner O-ring compression station of the present invention.

FIG. 14 is a schematic structural view of an inner O-ring detection station and an ejection station in the present invention.

In the figure: 10. a seal ring; 20. an outer O-ring; 30. an inner O-shaped ring;

1. a turntable; 11. a sealing ring placing seat;

2. a seal ring feeding station; 21. a seal ring feeding manipulator;

3. an outer O-ring mounting station; 31. a multi-claw supporting and clamping manipulator; 32. a clamping jaw; 33. a material returning claw; 34. a knife switch; 35. a material ejection claw;

4. an outer O-shaped ring detection station; 41. an outer ring displacement sensor;

5. an inner O-shaped ring mounting station; 51. a vacuum suction manipulator; 52. a straw; 53. sucking holes; 54. blanking die; 55. die holes;

6. an inner O-shaped ring pressing station; 61. a material blocking rod; 62. pressing the frame outwards; 63. an intermediate pressure pipe; 64. an inner compression bar;

7. an inner O-shaped ring detection station; 71. an inner ring displacement sensor; 72. discharging a defective product from a blow pipe;

8. a discharge station; 81. qualified products are discharged through a blowpipe;

9. and a material ejecting cylinder.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further specifically described below by examples.

Example 1

Referring to fig. 1, in the present embodiment, an outer O-ring 20 is required to be installed on the outer side of a sealing ring 10, and an inner O-ring 30 is required to be installed on the inner side of the sealing ring, specifically, an outer O-ring installation groove is provided below a thread on the outer side of the sealing ring 10 and near a step, and is used for installing the outer O-ring 20; the seal ring 10 has a stepped surface on the inside for receiving the inner O-ring 30.

As shown in fig. 2 to 14, the sealing ring assembling machine of this embodiment includes a turntable 1 having a plurality of (e.g., 10) sealing ring placing seats 11 at an edge thereof, and a sealing ring feeding station 2, an outer O-ring mounting station 3, an outer O-ring detecting station 4, an inner O-ring mounting station 5, an inner O-ring compressing station 6, an inner O-ring detecting station 7, and a discharging station 8, which are distributed counterclockwise along the circumferential outer side of the turntable 1; the turntable 1 rotates anticlockwise and intermittently, so that the sealing ring placing seats 11 sequentially correspond to the stations. The turntable 1 is provided with a circular ring shape, so that parts needing to act from inside to outside, such as devices needed for discharging and the like, can be arranged in the middle of the turntable.

In this embodiment, the bottom shape of the sealing ring placing seat 11 and the sealing ring 10 is matched, and the middle of the sealing ring placing seat is provided with a through hole penetrating through the turntable, so that the sealing ring 10 is pushed upwards out of the sealing ring placing seat 11 during discharging.

Specifically, the seal ring feeding station 2 is provided with a seal ring feeding manipulator 21, the seal ring feeding manipulator 21 comprises a clamp cylinder with a vertical degree of freedom and a horizontal degree of freedom, the two degrees of freedom are respectively driven by the cylinder, and fingers of the clamp cylinder are matched with the outer edge of the seal ring 10 so as to be convenient to clamp; the sealing ring 10 is supplied by a vibrating disc, in order to facilitate clamping of the sealing ring feeding manipulator 21, a cylinder for transverse material ejection and a cylinder for upward material ejection are arranged at the end point of the vibrating disc, and the sealing ring 10 is separated and then clamped to the corresponding sealing ring placing seat 11 by the sealing ring feeding manipulator 21.

The outer O-shaped ring mounting station 3 is provided with a multi-jaw supporting and clamping manipulator 31 with vertical and horizontal freedom degrees provided by a cylinder, the multi-jaw supporting and clamping manipulator 31 is provided with a group of clamping jaws 32 capable of expanding or contracting along the radial direction and a group of material returning jaws 33 capable of moving along the axial direction, the clamping jaws 32 and the material returning jaws 33 are staggered in jaw position, the number of the clamping jaws 32 is 6, and the clamping jaws 32 expand outwards to fix the outer O-shaped ring 20 and contract inwards to release; the structure of the multi-jaw clamping manipulator 31 is disclosed in the prior art, and similar products can be custom made or purchased directly from the market, so the driving principle of the clamping jaw 32 and the material returning jaw 33 is not described in detail herein. The outer O-shaped rings 20 are supplied by the vibration disc, so that the problem that material taking is difficult due to the fact that the outer O-shaped rings are overlapped is avoided, a switch blade 34 driven by an air cylinder is arranged at the end point of the vibration disc, and the gap between the lower surface of the switch blade 34 and the bottom surface of the material taking position is slightly larger than the thickness of the outer O-shaped rings, so that only one outer O-shaped ring 20 can enter the vibration disc at a time; in addition, the material taking part is provided with a material ejecting claw 35 driven by an air cylinder and used for pushing the outer O-shaped ring 20 upwards to a certain height (the upper end surface of the material ejecting claw 35 is provided with a groove matched with the profile of the outer O-shaped ring 20 so as to facilitate the positioning of the outer O-shaped ring), so that the clamping jaws can be conveniently grabbed, and the material ejecting claw 35 corresponds to the clamping jaw 32 in a staggered mode, so that the lowest point of the clamping jaw 32 can be lowered to the position below the outer O-shaped ring, and the outer O-shaped ring can be supported after the material ejecting claw is opened. Specifically, when the outer O-ring 20 is clamped, firstly, the vibration disc supplies the outer O-ring 20 to a material taking position, then the knife switch 34 retracts, the material ejecting claw 35 moves upwards to lift the outer O-ring 20, the multi-claw clamping manipulator 31 moves downwards until the clamping claw 32 and the material ejecting claw 35 are staggered, then the clamping claw 32 expands to support the outer O-ring 20, and at the moment, the outer O-ring 20 is fixed outside the clamping claw 32; then the multi-jaw supporting and clamping manipulator 31 moves upwards and horizontally to the position above the corresponding sealing ring, then descends to enable the clamping jaw 32 to be located on the outer side of the sealing ring (the inner diameter of the clamping jaw is larger than the outer diameter of the sealing ring after expansion), then the material returning jaw 33 moves downwards relative to the clamping jaw 32 to push the outer O-shaped ring 20 out of the clamping jaw 32 and sleeve the clamping jaw 32 into an outer O-shaped ring installation groove on the outer side of the sealing ring under the self elasticity of the clamping jaw, and installation of the outer sealing ring 20 is completed.

The outer O-shaped ring detection station 4 is provided with an outer ring displacement sensor 41 capable of moving downwards, and the outer O-shaped ring has a certain thickness, so that whether the outer O-shaped ring is correctly installed or not can be detected through the downward movement of the measuring head and the displacement of the measuring head after the measuring head touches the outer O-shaped ring. Specifically, the measuring head profile of the outer ring displacement sensor 41 is annular, and the inner ring diameter is larger than the outer diameter of the seal ring and smaller than the outer diameter of the outer O-ring, and corresponds to the position of the outer O-ring 20 when moving downward. If the detection result is that the installation is not correct, the subsequent stations do not work along with the rotation of the turntable, and the defective product discharge blowpipe at the inner O-shaped ring detection station is used for removing the defective product discharge blowpipe; and if the detection result is correct installation, the subsequent stations normally work.

The inner O-shaped ring mounting station 5 is provided with a vacuum suction manipulator 51 with vertical and horizontal degrees of freedom provided by an air cylinder, the vacuum suction manipulator 51 comprises a suction pipe 52, a main air vent is arranged in the middle of the suction pipe 52, the front end of the suction pipe is provided with a profiling curved surface matched with the surface of the inner O-shaped ring 30, a plurality of suction holes 53 are uniformly distributed on the profiling curved surface along the circumferential direction, the suction holes 53 are respectively communicated with the main air vent, the tail end of the suction pipe 52 is connected with a vacuum generator, and negative pressure is formed in the main air vent and each suction hole 53 when the vacuum generator works, so that the inner O-shaped ring 30 can be sucked. In addition, the inner O-ring mounting station 5 is further provided with a blanking die 54 located above the corresponding sealing ring placing seat, and the blanking die 54 is provided with a wedge-shaped die hole 55 with a bottom end corresponding to the middle of the sealing ring and a wide top and a narrow bottom, so that the suction pipe 52 can be smoothly inserted into the middle of the sealing ring. The vacuum suction robot 51 sucks the inner O-ring, places the inner O-ring on the inner ring of the seal ring, and mounts the inner O-ring in place by a downward movement, and in principle, this step can satisfy the mounting of the inner O-ring.

The inner O-shaped ring pressing station 6 comprises a material blocking rod 61 arranged below the corresponding sealing ring placing seat and a pressing mechanism arranged above the corresponding sealing ring placing seat. The material blocking rod 61 is driven by an air cylinder, and the end part of the material blocking rod is used for blocking the inner ring of the sealing ring from the lower part, so that the inner O-shaped ring is prevented from being separated from the lower part due to deformation in the pressing process; the compressing mechanism comprises an outer pressure frame 62, an intermediate pressure pipe 63 and an inner pressure rod 64 which are respectively driven by a cylinder, the bottom surface of the outer pressure frame 62 corresponds to the upper surface of the sealing ring, the intermediate pressure pipe 63 corresponds to the outer ring of the inner O-shaped ring of the sealing ring (namely the inner diameter of the intermediate pressure pipe is equal to or slightly larger than the outer diameter of the inner O-shaped ring), and the inner pressure rod 64 corresponds to the inner O-shaped ring. When the outer pressure frame 62 moves downwards, the middle pressure pipe 63 and the inner pressure rod 64 are driven to move downwards integrally, the bottom surface of the outer pressure frame 62 fixes the sealing ring integrally, then when the middle pressure pipe 63 moves downwards (drives the inner pressure rod to move downwards together), the middle hole edge of the sealing ring is propped against, finally, the inner pressure rod 64 moves downwards to compress the sealing ring, namely, the action of the inner pressure rod 64 is divided into three strokes.

The inner O-shaped ring detection station 7 is provided with an inner ring displacement sensor 71 capable of moving downwards, and the inner O-shaped ring 30 is of a certain thickness, so that whether the inner O-shaped ring is installed correctly or not can be detected through displacement after a measuring head moves downwards to touch the inner O-shaped ring. Specifically, the gauge head of the inner ring displacement sensor 71 corresponds to the position of the inner O-ring. If the detection result is that the installation is not correct, a defective product discharge blow pipe 72 at an inner O-shaped ring detection station 71 is removed; and if the detection result is correct installation, continuously rotating to the next discharging station for discharging.

A defective product discharging blow pipe 72 is arranged at the inner O-shaped ring detection station 7, and a qualified product discharging blow pipe 81 is arranged at the discharging station 8; the sealing ring placing seats below the inner O-shaped ring detection stations 7 and the discharging stations 8 are respectively provided with a material ejecting cylinder 9, and when defective products or qualified products are discharged, the sealing ring upwards ejecting sealing ring placing seats are firstly ejected out by the material ejecting cylinder 9, and then the sealing ring outwards blows out through the corresponding discharging blowpipes.

The sealing ring assembling machine of the embodiment is also provided with a set of control system, the control system is connected with each sensor and the driving electric device to realize the orderly operation of the assembling steps, and the control system can be a programmable logic controller, receives the signals of each sensor and controls each cylinder or motor to work orderly to realize the automatic assembly.

It should be noted that, in the drawings, some idle stations are shown, and these idle stations are used for some expansion functions, and can be ignored in this embodiment.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The outer side of the sealing ring is provided with an outer O-shaped ring, and the inner side of the sealing ring is provided with an inner O-shaped ring; the sealing ring assembling machine is characterized by comprising a turntable provided with a plurality of sealing ring placing seats, and a sealing ring feeding station, an outer O-shaped ring mounting station, an inner O-shaped ring mounting station and a discharging station which are distributed along the circumferential outer side of the turntable, wherein the turntable intermittently rotates to enable the sealing ring placing seats to sequentially correspond to the stations;

a sealing ring feeding manipulator is arranged at the sealing ring feeding station and used for clamping the sealing ring into the corresponding sealing ring placing seat;

the outer O-shaped ring installing station is provided with a multi-claw supporting and clamping manipulator, the multi-claw supporting and clamping manipulator is provided with a group of clamping claws capable of expanding or contracting along the radial direction and a group of material returning claws capable of moving along the axial direction, the clamping claws are staggered with the claw positions of the material returning claws, and after the clamping claws clamp the outer O-shaped ring above the corresponding sealing ring, the material returning claws shift the outer O-shaped ring downwards to the outer side of the sealing ring;

2. A gasket assembly machine according to claim 1 wherein the gasket, outer O-ring and inner O-ring are fed separately through a vibratory pan.

3. The sealing ring assembling machine as claimed in claim 2, wherein the material taking position of the multi-gripper manipulator is provided with material ejecting claws capable of pushing the outer O-ring upwards, and the material ejecting claws correspond to the clamping claws in a staggered mode.

4. A seal ring assembly machine as claimed in claim 1 wherein said jaws have a jaw count of 5 to 8.

5. The sealing ring assembling machine as claimed in claim 1, wherein the vacuum suction manipulator comprises a suction pipe, the end of the suction pipe is provided with a profiling curved surface matched with the surface of the inner O-shaped ring, and a plurality of suction holes are uniformly distributed on the profiling curved surface along the circumferential direction.

6. A sealing ring assembling machine as claimed in claim 5, wherein the inner O-ring mounting station is further provided with a blanking die located above the corresponding sealing ring placing seat, and the blanking die is provided with a wedge-shaped die hole with a bottom end corresponding to the middle of the sealing ring and a wide top and a narrow bottom.

7. A sealing ring assembling machine according to claim 1, wherein an outer O-ring detection station is further arranged behind the outer O-ring installation station, an outer ring displacement sensor is arranged at the outer O-ring detection station, a measuring head profile of the outer ring displacement sensor is annular, and the diameter of an inner ring is larger than the outer diameter of the sealing ring and smaller than the outer diameter of the outer O-ring.

8. The sealing ring assembling machine according to claim 1, wherein an inner O-ring pressing station is further arranged behind the inner O-ring mounting station, and comprises a blocking rod arranged below the corresponding sealing ring placing seat and a pressing mechanism arranged above the corresponding sealing ring placing seat; the pressing mechanism comprises an outer pressing frame, an intermediate pressing pipe and an inner pressing rod, the outer pressing frame, the intermediate pressing pipe and the inner pressing rod are respectively driven by the air cylinder, the bottom surface of the outer pressing frame corresponds to the upper surface of the sealing ring, the intermediate pressing pipe corresponds to the inner side step surface of the sealing ring, and the inner pressing rod corresponds to the inner O-shaped ring.

9. The sealing ring assembling machine according to claim 1, wherein an inner O-ring detection station is arranged in front of the discharging station, an inner ring displacement sensor is arranged at the inner O-ring detection station, and a measuring head of the inner ring displacement sensor corresponds to the position of the inner O-ring.

10. The sealing ring assembling machine according to claim 9, wherein the inner O-ring detection station is provided with a defective product discharge blow pipe, and the discharge station is provided with a qualified product discharge blow pipe; and the ejection air cylinders are respectively arranged below the sealing ring placing seats corresponding to the inner O-shaped ring detection station and the discharge station.