Double-station instrument mask ring mounting machine and mounting method

Abstract

The double-station instrument mask ring installing machine comprises a rack and a rotating mechanism installed in the rack, the top of the rotating mechanism rotates to drive a rotating supporting plate, and two station locking mechanisms are symmetrically arranged on the two sides of the upper portion of the rotating supporting plate; a positioning base table used for placing an instrument shell is arranged at the position, located in the middle of the station locking mechanism, above the rotary supporting plate. A lifting servo transmission mechanism is installed above the machine frame and located on the rear side of the rotating supporting plate, a rotating mechanism is installed on a sliding piece on the front side of the lifting servo transmission mechanism, and a pneumatic chuck is installed at the output end below the rotating mechanism and located above the positioning base table. In the installation process of one instrument, the installed instrument on the other station locking mechanism and an instrument shell of a cover ring to be installed are installed and replaced, and the installation efficiency is greatly improved; when the rotating servo motor performs angle rotation, the lifting power servo motor drives the rotating mechanism and the cover ring to continuously rotate downwards until the screwing position of the cover ring clamping groove and the watchcase buckle meets the process and quality requirements, and the whole screwing action is completely consistent with the action of manually locking the cover ring.

Description

Technical Field

[0001] The invention relates to the field of instrument assembly, in particular to a double-station instrument cover ring installation machine and an installation method. Background Art

[0002] During the assembly process of the instrument, when installing the instrument cover ring, a screwing mechanism is required to screw the cover ring together. The existing assembly equipment includes a lifting mechanism, a rotating mechanism arranged on the lifting mechanism, and a rotating chuck arranged on the rotating mechanism. When installing the cover ring, the chuck grasps the cover ring, and then the cover ring is moved to the instrument housing through the lifting mechanism, and then the cover ring is driven to rotate through the rotating mechanism so that the cover ring is screwed in and assembled into place. During the screwing-in assembly process, the cover ring will move downward while rotating, and the lifting mechanism will not move downward synchronously with the cover ring, which will cause relative displacement between the cover ring and the rotating chuck, and the screwing action is not complete, thereby scratching the surface of the cover ring. In addition, the existing installation machine has only one station for installation. When one installation is completed, it needs to be stopped and removed before the next cover ring is installed, which has low assembly efficiency. Summary of the invention

[0003] The object of the present invention is to provide a double-station instrument cover ring installation machine and installation method to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention provides a double-station instrument cover ring installation machine, comprising a frame and a rotating mechanism installed in the frame, the top of the rotating mechanism rotates to drive a rotating support plate, two station locking mechanisms are symmetrically arranged on both sides above the rotating support plate, and a positioning base for placing an instrument housing is arranged above the rotating support plate and in the middle of the station locking mechanism;

[0006] A lifting servo transmission mechanism is installed above the frame at the rear side of the rotating support plate, a rotating mechanism is installed on the sliding member in front of the lifting servo transmission mechanism, and a pneumatic chuck is installed on the output end below the rotating mechanism, and the pneumatic chuck is located above the positioning base.

[0007] Furthermore, the station locking mechanism further includes: a locking guide rail symmetrically fixed above the rotating support plate and located on both sides of the positioning base, a cylinder support plate fixed on the rotating support plate and located on the side of the locking guide rail away from the positioning base and a clamping cylinder installed thereon, a guide slider slidably arranged on the locking guide rail and a slide seat installed thereon, a floating joint fixed on the clamping cylinder and used to connect with the slide seat, a guide support plate fixed on one side of the slide seat, and a clamping card plate arranged on one side of the guide support plate for clamping the instrument housing;

[0008] Furthermore, the lifting servo transmission mechanism is connected to the frame through a lifting bracket, and the lifting servo transmission mechanism has a lifting power servo motor, and the lifting power servo motor drives the sliding member to move up and down;

[0009] The rotating mechanism further includes: a fixed bracket installed and connected to the sliding member of the lifting servo transmission mechanism, a rotating servo motor fixedly connected to the front side of the fixed bracket, and a downward output end of the rotating servo motor connected to the pneumatic chuck after passing through a reducer.

[0010] Furthermore, a travel limit block is provided at the rear end of one side of the fixed bracket, and a plurality of sensor brackets arranged vertically are provided on the lifting servo transmission mechanism, and a travel limit detection sensor for detecting the travel limit block is installed on the sensor bracket.

[0011] Furthermore, a rotating disc is fixed at the bottom of the rotating support plate, and the rotating mechanism further includes a rotating drive motor for driving the rotating disc to rotate, and a fixing seat connected to the frame and used to fix the rotating drive motor;

[0012] A positioning block is fixedly connected to the outer wall of the rotating disk, and a positioning detection sensor for detecting the positioning block is installed on the top of the fixing seat.

[0013] Furthermore, there are two positioning detection sensors, which are symmetrically installed on both sides of the top of the fixing base.

[0014] Furthermore, a soft claw assembly is installed on the claw of the pneumatic chuck, and the soft claw assembly includes a fixed base connected to the claw by screws, a fixed base plate fixed under the fixed base plate, and a soft claw block installed on a side wall of the fixed base plate by screws, and one side wall of the soft claw block is a circular arc surface.

[0015] Furthermore, a circular avoidance hole is opened on the frame at the periphery of the rotating support plate, and an elastic leather pad is arranged in the arc-shaped groove on one side of the clamping clamping plate.

[0016] A circular avoidance hole is provided above the frame and on the periphery of the rotating support plate.

[0017] The arc-shaped slots on one side of the two clamping plates are designed according to the product characteristics of the axial instrument housing's centered and eccentric long joints and long connecting pipes. The maximum eccentricity is 130mm, which can meet the needs of products with different eccentricities and different lengths.

[0018] The present invention also provides a method for installing a double-station instrument cover ring, which is applied to the double-station instrument cover ring installation machine as described above, and comprises the following steps:

[0019] S1. First, place the instrument housing to be installed with the cover ring on the front positioning base, perform preliminary positioning of the instrument housing, and then clamp the instrument housing through the station locking mechanism;

[0020] S2, driving the rotating support plate to rotate in a positive direction through the rotating mechanism, so that the positioning base clamping the instrument housing in step S1 is rotated to the rear side and located directly below the pneumatic chuck;

[0021] S3. Clamp the cover ring with the claws of the pneumatic chuck, and then drive the rotating mechanism downward through the lifting servo transmission mechanism, thereby driving the cover ring downward to the top of the instrument housing and contacting the instrument housing, and then the rotating mechanism drives the pneumatic chuck to rotate, thereby driving the cover ring and the instrument housing to be screwed together and installed. After the screwing and installation, release the claws of the pneumatic chuck, and the lifting servo transmission mechanism drives the rotating mechanism to move upward;

[0022] S4. Use the rotating mechanism to drive the rotating support plate to rotate in the opposite direction, rotate the instrument with the cover ring installed to the front side and take it out;

[0023] S5. After step S2 and at the same time as step S3, the operation of step S1 is synchronously performed on the positioning base located on the front side, and then the operations of steps S2, S3 and S4 are repeated to complete the cyclic installation of the instrument housing and the cover ring by the instrument cover ring installation machine.

[0024] Furthermore, in step S3, when the rotating mechanism drives the cover ring to rotate and screw together with the instrument housing, the lifting servo transmission mechanism continues to drive the cover ring to move downward until the cover ring is screwed together with the instrument housing and installed, and then the lifting servo transmission mechanism stops moving downward.

[0025] The present invention can clamp the cover ring through the soft claw assembly of the pneumatic chuck, and then the lifting power servo motor drives the rotating mechanism to move downward, driving the cover ring to move downward until the cover ring moves down to the position specified by the process, and the rotating servo motor performs angle rotation to ensure that the cover ring and the watch case are effectively fastened and matched. This action is closer to the actual manual tightening and installation action, avoiding product quality problems caused by damage to the workpiece due to hard pressure; when the rotating servo motor performs angle rotation, the cover ring and the instrument housing are screwed together, and the lifting power servo motor drives the rotating mechanism and the cover ring to continue to move downward, which can ensure that the soft claw assembly of the pneumatic chuck and the cover ring will not produce relative displacement due to the descent of the cover ring during the screwing process, effectively avoiding scratching the surface of the cover ring;

[0026] The present invention arranges two station locking mechanisms on the rotating support plate. During the installation of one instrument, the installed instrument on the other station locking mechanism and the instrument housing to be installed with the cover ring are installed and replaced, thereby greatly improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 It is a left-side structural diagram of the present invention;

[0029] Figure 3 It is a structural diagram of the rotating mechanism, the rotating support plate and the station locking mechanism in the present invention;

[0030] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0031] Figure 5 It is an enlarged view of the local structure of the station locking mechanism in the present invention;

[0032] Figure 6 is a cross-sectional view of the station locking mechanism of the present invention;

[0033] Figure 7 It is a structural diagram of the pneumatic chuck and the soft jaw assembly of the present invention;

[0034] In the figure: 1, frame; 2, PLC controller; 3, operation button; 4, lifting bracket; 5, lifting servo transmission mechanism; 6, fixed bracket; 7, rotary servo motor; 8, pneumatic chuck; 9, soft claw assembly; 901, fixed clamping seat; 902, fixed base plate; 903, soft claw clamping block; 904, arc surface; 10, travel limit block; 11, sensor bracket; 12, travel limit detection sensor; 13, rotating mechanism; 131, rotary drive Driving motor; 132, fixed seat; 14, turntable; 15, rotating support plate; 16, work station locking mechanism; 1601, cylinder support plate; 1602, locking guide rail; 1603, guide slider; 1604, slide seat; 1605, floating joint; 1606, guide support plate; 1607, clamping card plate; 1608, elastic leather pad; 1609, clamping cylinder; 17, positioning base; 18, positioning block; 19, positioning detection sensor. DETAILED DESCRIPTION

[0035] See also Figures 1 to 7 A double-station instrument cover ring installation machine includes a frame 1 and a rotating mechanism 13 installed in the frame 1. The top of the rotating mechanism 13 rotates to drive a rotating support plate 15. Two station locking mechanisms 16 are symmetrically arranged on both sides above the rotating support plate 15. A positioning base 17 for placing an instrument housing is arranged above the rotating support plate 15 and in the middle of the station locking mechanism 16;

[0036] A lifting servo transmission mechanism 5 is installed above the frame 1 on the rear side of the rotating support plate 15, a rotating mechanism is installed on the sliding member on the front side of the lifting servo transmission mechanism 5, and a pneumatic chuck 8 is installed on the output end below the rotating mechanism. The pneumatic chuck 8 is located above the positioning base 17. The pneumatic chuck 8 is driven to rotate by the rotating servo motor 7 to realize the screwing installation of the cover ring and the instrument housing.

[0037] Among them, the workstation locking mechanism 16 further includes: a locking guide rail 1602 symmetrically fixed above the rotating support plate 15 and located on both sides of the positioning base 17, a cylinder support plate 1601 fixed on the rotating support plate 15 and located on the side of the locking guide rail 1602 away from the positioning base 17 and a clamping cylinder 1609 installed thereon, a guide slider 1603 slidably set on the locking guide rail 1602 and a slide 1604 installed thereon, a floating joint 1605 fixed on the clamping cylinder 1609 and used to connect with the slide 1604, a guide support plate 1606 fixed on one side of the slide 1604, and a clamping card 1607 arranged on one side of the guide support plate 1606 for clamping the instrument housing.

[0038] The lifting servo transmission mechanism 5 is installed and connected with the frame 1 through the lifting bracket 4. The lifting servo transmission mechanism 5 has a lifting power servo motor. The lifting power servo motor drives the sliding part to move up and down, and then drives the rotating mechanism to move up and down.

[0039] The rotating mechanism further includes: a fixed bracket 6 connected to the sliding member of the lifting servo transmission mechanism 5, a rotating servo motor 7 fixedly connected to the front side of the fixed bracket 6, and a downward output end of the rotating servo motor 7 connected to a pneumatic chuck 8 after passing through a reducer.

[0040] Among them, a travel limit block 10 is arranged at the rear end of one side of the fixed bracket 6, and a plurality of sensor brackets 11 arranged up and down are arranged on the lifting servo transmission mechanism 5, and a travel limit detection sensor 12 for detecting the travel limit block 10 is installed on the sensor bracket 11. By adjusting the up and down position of the sensor bracket 11, the position adjustment of the travel limit detection sensor 12 is driven, and then the up and down movement travel distance of the rotating mechanism driven by the lifting servo transmission mechanism 5 is adjusted.

[0041] A rotating disc 14 is fixed at the bottom of the rotating support plate 15, and the rotating mechanism 13 further includes a rotating drive motor 131 for driving the rotating disc 14 to rotate, and a fixing seat 132 connected to the frame 1 and used to fix the rotating drive motor 131;

[0042] A positioning block 18 is fixedly connected to the outer wall of the turntable 14, and a positioning detection sensor 19 for detecting the positioning block is installed on the top of the fixed seat 132. The positioning detection sensor 19 can be used to detect the position status of the workstation locking mechanism 16, thereby facilitating debugging in the initial stage.

[0043] There are two positioning detection sensors 19 , which are symmetrically installed on both sides of the top of the fixing base 132 .

[0044] Among them, a soft claw assembly 9 is installed on the claw of the pneumatic chuck 8, and the soft claw assembly 9 includes a fixed base 901 connected to the claw by screws, a fixed base plate 902 fixed under the fixed base 901, and a soft claw block 903 installed on a side wall of the fixed base plate 902 by screws. One side wall of the soft claw block 903 is an arc surface 904, which realizes the clamping operation of the cover ring.

[0045] The pneumatic chuck 8 is a three-jaw chuck, and the pneumatic chuck produced by Changzhou Jingka Machinery Co., Ltd. (such as the vertical three-jaw hollow pneumatic chuck with model JK130HQ-3-LS) can be used. The pneumatic chuck 10 is connected to an air source device (such as an air compressor) through a ventilation pipe, and the clamping and loosening actions of the chuck are controlled by the pneumatic system. Specifically, there is a cylinder inside the pneumatic chuck. When the air source device supplies gas, the cylinder pushes the jaws to move outward, thereby clamping the workpiece; when the air source device is turned off, the jaws are reset under the action of the spring, and the workpiece is released, thereby achieving the clamping or loosening of the instrument cover ring.

[0046] By adopting the above technical scheme, after the cover ring is clamped by the soft claw assembly 9 of the pneumatic chuck 8, the lifting power servo motor drives the rotating mechanism 13 to move downward, driving the cover ring to move downward until the cover ring moves down to the position specified by the process, and the rotating servo motor 7 performs angular rotation to ensure that the cover ring and the instrument housing are effectively tightened and matched. This action is closer to the actual manual tightening and installation action, avoiding product quality problems caused by damage to the workpiece due to hard pressure; when the rotating servo motor 7 performs angular rotation, the cover ring and the instrument housing are screwed together, and the lifting power servo motor drives the rotating mechanism 13 and the cover ring to continue to move downward, which can ensure that the soft claw assembly 9 of the pneumatic chuck 8 and the cover ring will not produce relative displacement due to the descent of the cover ring during the screwing process, effectively avoiding scratches on the surface of the cover ring.

[0047] Among them, a circular avoidance hole is opened on the frame 1 at the outer periphery of the rotating support plate 15, and an elastic leather pad 1608 is arranged in the arc-shaped groove on one side of the clamping clamp 1607, which can not only elastically clamp the instrument housing, but also prevent the instrument housing from being scratched; the arc-shaped groove on one side of the two clamping clamps 1607 is designed according to the product characteristics of the axial instrument housing's centered and eccentric long joints and long connecting pipes, with a maximum eccentricity of 130mm, which can meet the needs of products with different eccentricities and different lengths.

[0048] Among them, two operation buttons 3 connected in series are fixedly connected above the frame 1 on the front side of the rotating support plate 15, and a PLC controller 2 is fixedly connected to one side wall of the frame 1. The operation button 3 is electrically connected to the PLC controller 2, and the PLC controller 2 is connected to an external power supply. The PLC controller is electrically connected to the lifting power servo motor, the rotation servo motor 7, the rotation drive motor 131, the travel limit detection sensor 12 and the positioning detection sensor 19; the pneumatic chuck 8 and the clamping cylinder 1609 are both connected to an air compressor, which can be an external device controlled by an external controller, or the air compressor can be installed in the frame 1 and controlled by the PLC controller; two operation buttons 3 connected in series are set to ensure that the equipment can only be operated after the two operation buttons 3 are pressed at the same time to ensure safety.

[0049] A method for installing a double-station instrument cover ring is applied to a double-station instrument cover ring installation machine as described above, and comprises the following steps:

[0050] S1. First, place the instrument housing to be installed with the cover ring on the front positioning base 17 to perform preliminary positioning of the instrument housing, and then clamp the instrument housing through the station locking mechanism 16;

[0051] S2, the rotating support plate 15 is driven to rotate 180 degrees in the positive direction by the rotating mechanism 13, and the positioning base 17 clamped with the instrument housing in step S1 is rotated to the rear side and located directly below the pneumatic chuck 8;

[0052] S3, clamp the cover ring with the claws of the pneumatic chuck 8, and then drive the rotating mechanism to move downward through the lifting servo transmission mechanism 5, thereby driving the cover ring to move downward to the top of the instrument housing and contact the instrument housing, and then the rotating mechanism 13 drives the pneumatic chuck 8 to rotate, thereby driving the cover ring and the instrument housing to be screwed together and installed, and after the screwing and installation, release the claws of the pneumatic chuck, and the lifting servo transmission mechanism 5 drives the rotating mechanism to move upward;

[0053] S4, the rotating support plate 15 is driven by the rotating mechanism 13 to rotate 180 degrees in the opposite direction, and the instrument with the cover ring installed is rotated to the front side and taken out;

[0054] S5. After step S2 and at the same time as step S3, the operation of step S1 is synchronously performed on the positioning base located on the front side, and then the operations of steps S2, S3 and S4 are repeated to complete the cyclic installation of the instrument housing and the cover ring by the instrument cover ring installation machine.

[0055] Among them, in step S1, the clamping cylinder 1609 is actuated to push the clamping clamping plate 1607 to move toward each other under the guidance of the locking guide rail 1602 and the guide slider 1603, thereby clamping the instrument housing.

[0056] In step S2, the rotary drive motor 131 is started, and the rotary support plate 15 is driven by the rotary drive motor 131 to rotate in the forward direction, so that the station locking mechanism 16 on which the instrument housing is installed is rotated to the position directly below the pneumatic chuck 8.

[0057] There are two ways to screw the cover ring and the instrument housing. One is snap-fitting, which does not produce a displacement drop during the screwing process; the other is threaded screwing. In this way, a downward drop of 1-2 mm will be produced during the screwing process. At this time, if the rotating mechanism does not continue to move downward, the cover ring will slide with the claws of the pneumatic chuck 8, causing the claws to scratch the surface of the cover ring. Therefore, in step S3, when the rotating mechanism 13 drives the cover ring to rotate and screw with the instrument housing, the lifting servo transmission mechanism 5 continues to drive the cover ring to move downward until the cover ring is screwed and installed with the instrument housing, and the lifting servo transmission mechanism 5 stops moving downward. The lifting servo motor drives the rotating mechanism 13 to move downward in coordination, so that the cover ring moves downward synchronously during the screwing process with the instrument housing, effectively avoiding scratches on the surface of the cover ring.

[0058] By adopting the above technical solution, by setting two workstation locking mechanisms 16 on the rotating support plate 15, during the installation of one instrument, the installed instrument and the instrument housing to be installed with the cover ring on the other workstation locking mechanism 16 can be installed and replaced, which greatly improves the installation efficiency.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-station instrument cover ring installation machine, comprising a frame (1) and a rotating mechanism (13) installed in the frame (1), characterized in that: The top of the rotating mechanism (13) rotates to drive a rotating support plate (15), two station locking mechanisms (16) are symmetrically arranged on both sides above the rotating support plate (15), and a positioning base (17) for placing the instrument housing is arranged above the rotating support plate (15) and in the middle of the station locking mechanism (16); A lifting servo transmission mechanism (5) is installed above the frame (1) and at the rear side of the rotating support plate (15); a rotating mechanism is installed on the sliding member on the front side of the lifting servo transmission mechanism (5); a pneumatic chuck (8) is installed on the output end below the rotating mechanism; and the pneumatic chuck (8) is located above the positioning base (17).

2. A double-station instrument cover ring installation machine according to claim 1, characterized in that: The station locking mechanism (16) further comprises: a locking guide rail (1602) symmetrically fixed above the rotating support plate (15) and located on both sides of the positioning base (17), a cylinder support plate (1601) fixed on the rotating support plate (15) and located on the side of the locking guide rail (1602) away from the positioning base (17) and a clamping cylinder (1609) mounted thereon, a guide slider (1603) slidably arranged on the locking guide rail (1602) and a slide seat (1604) mounted thereon, a floating joint (1605) fixed on the clamping cylinder (1609) and used for connecting to the slide seat (1604), a guide support plate (1606) fixed on one side of the slide seat (1604), and a clamping clamp plate (1607) arranged on one side of the guide support plate (1606) for clamping the instrument housing.

3. A double-station instrument cover ring installation machine according to claim 1, characterized in that: The lifting servo transmission mechanism (5) is connected to the frame (1) via a lifting bracket (4), and the lifting servo transmission mechanism (5) comprises a lifting power servo motor, which drives the sliding member to move up and down; The rotating mechanism further comprises: a fixed bracket (6) connected to the sliding member of the lifting servo transmission mechanism (5); a rotating servo motor (7) fixedly connected to the front side of the fixed bracket (6); and a downward output end of the rotating servo motor (7) connected to a pneumatic chuck (8) via a reducer.

4. A double-station instrument cover ring installation machine according to claim 3, characterized in that: A travel limit block (10) is arranged at the rear end of one side of the fixed bracket (6), and a plurality of sensor brackets (11) arranged vertically are arranged on the lifting servo transmission mechanism (5), and a travel limit detection sensor (12) for detecting the travel limit block (10) is installed on the sensor bracket (11).

5. A double-station instrument cover ring installation machine according to claim 1, characterized in that: A rotating disk (14) is fixed at the bottom of the rotating support plate (15), and the rotating mechanism (13) further comprises a rotating drive motor (131) for driving the rotating disk (14) to rotate, and a fixing seat (132) connected to the frame (1) and used to fix the rotating drive motor (131); A positioning block (18) is fixedly connected to the outer wall of the rotating disk (14), and a positioning detection sensor (19) for detecting the positioning block is installed on the top of the fixing seat (132).

6. The double-station instrument cover ring installation machine according to claim 5, characterized in that: The positioning detection sensors (19) are provided in two pieces and are symmetrically mounted on both sides of the top of the fixing seat (132).

7. A double-station instrument cover ring installation machine according to claim 1, characterized in that: A soft jaw assembly (9) is mounted on the jaws of the pneumatic chuck (8), the soft jaw assembly (9) comprising a fixed clamping seat (901) connected to the jaws by screws, a fixed base plate (902) fixed below the fixed clamping seat (901), and a soft jaw clamping block (903) mounted on a side wall of the fixed base plate (902) by screws, wherein a side wall of the soft jaw clamping block (903) is a circular arc surface (904).

8. A double-station instrument cover ring installation machine according to claim 2, characterized in that: A circular avoidance hole is provided on the frame (1) at the periphery of the rotating support plate (15), and an elastic leather pad (1608) is provided in an arc-shaped groove on one side of the clamping clamping plate (1607).

9. A method for installing a double-station instrument cover ring, applied to a double-station instrument cover ring installation machine as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1. First, place the instrument housing to be installed with the cover ring on the front positioning base (17), perform preliminary positioning of the instrument housing, and then clamp the instrument housing through the station locking mechanism (16); S2, driving the rotating support plate (15) to rotate 180 degrees in the positive direction through the rotating mechanism (13), so that the positioning base (17) clamped with the instrument housing in step S1 is rotated to the rear side and located directly below the pneumatic chuck (8); S3, using the claws of the pneumatic chuck (8) to clamp the cover ring, and then driving the rotating mechanism to move downward through the lifting servo transmission mechanism (5), thereby driving the cover ring to move downward to the top of the instrument housing and contact the instrument housing, and then the rotating mechanism drives the pneumatic chuck (8) to rotate, thereby driving the cover ring and the instrument housing to be screwed together and installed, and after the screwing and installation, the claws of the pneumatic chuck are released, and the lifting servo transmission mechanism (5) drives the rotating mechanism to move upward; S4, the rotating support plate (15) is driven by the rotating mechanism (13) to rotate 180 degrees in the opposite direction, and the instrument with the cover ring installed is rotated to the front side and taken out; S5. After step S2 and at the same time as step S3, the operation of step S1 is synchronously performed on the positioning base located on the front side, and then the operations of steps S2, S3 and S4 are repeated to complete the cyclic installation of the instrument housing and the cover ring by the instrument cover ring installation machine.

10. The installation method of the double-station instrument cover ring according to claim 9, characterized in that: In step S3, when the rotating mechanism drives the cover ring to rotate and screw together with the instrument housing, the lifting servo transmission mechanism (5) continues to drive the cover ring to move downward until the cover ring is screwed together with the instrument housing and installed, and then the lifting servo transmission mechanism (5) stops moving downward.

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