Cap assembly for a capacitor

Abstract

The application relates to a capacitor cover cap assembling device and belongs to the technical field of capacitor assembling. The assembling device comprises a frame body, a positioning clamp, a pressing block and a telescopic device. The positioning clamp is installed on the frame body and used for installing an aluminum shell of a capacitor to be assembled. The telescopic device is installed on the frame body and drives the pressing block to press a cover cap of the capacitor to be assembled into the aluminum shell. By adopting the structure, the telescopic device drives the pressing block to replace manual pressing of the cover cap, so that the cover cap is forced to be shrink-fitted into the aluminum shell. Compared with the prior art, the application has the advantages of higher efficiency, and the telescopic device is easier to control in telescoping, the pressing force of the pressing block and the pressing process, and the probability of cover cap breakage is greatly reduced. The application further provides a capacitor cover cap assembling method. The method can ensure that the cover cap of the capacitor to be assembled is uniformly stressed and in a flat state during the process of being pressed into the aluminum shell, the qualified rate of the product after being pressed into the aluminum shell is high, the probability of cover cap rejection is almost zero, and enterprise benefits are improved.

Description

Technical Field

[0001] This invention belongs to the field of capacitor assembly technology, and specifically relates to a capacitor cap assembly device. Background Technology

[0002] The cap on a capacitor (such as an automotive capacitor) is primarily made of plastic and has electrode terminals on it. It serves not only a sealing function but also provides electrical conductivity. The capacitor also includes a housing, which is typically made of aluminum. The cap is interference-fitted to the opening in the aluminum housing and seals it.

[0003] In existing technologies, the cap is usually assembled onto the aluminum shell by manual pressing. However, the amount and balance of force applied during manual operation cannot be controlled, which can easily lead to cap breakage and scrapping, as well as uncontrollable product assembly quality. Furthermore, the assembly efficiency is low. Summary of the Invention

[0004] This invention provides a capacitor cap assembly device to solve the technical problems of easy damage to the cap and low assembly efficiency when manually pressing the cap onto the capacitor in the prior art.

[0005] This invention is achieved through the following technical solution: a capacitor cap assembly device, comprising:

[0006] Frame;

[0007] A positioning fixture, which is mounted on the frame and used to mount the aluminum shell of the capacitor to be assembled;

[0008] A pressure block and a telescopic device, wherein the telescopic device is installed on the frame and drives the pressure block to press the cap of the capacitor to be assembled into the aluminum shell.

[0009] Furthermore, in order to better realize the present invention, the telescopic device is a cylinder with adjustable stroke, and also includes a controller, which is electrically connected to the cylinder to control the working state of the cylinder.

[0010] Furthermore, in order to better realize the present invention, the cylinder is provided with a first position detection sensor for detecting the extension stop point of the telescopic rod, and the first position detection sensor is electrically connected to the controller.

[0011] Furthermore, in order to better realize the present invention, the surface of the pressure block near the positioning fixture is flat and the surface is provided with a relief groove for accommodating the electrode on the cap. The side wall of the relief groove is provided with a mounting hole. It also includes a pressure detection device with an air inlet pipe. The air inlet pipe is installed at the mounting hole and communicates with the relief groove. The pressure detection device is electrically connected to the controller.

[0012] Furthermore, in order to better realize the present invention, the cylinder is also provided with a second position detection sensor for detecting the retraction stop point of the telescopic rod, and the second position detection sensor is electrically connected to the controller.

[0013] Furthermore, in order to better implement the present invention, the controller is a PLC.

[0014] Furthermore, in order to better realize the present invention, the controller is also electrically connected to a display screen to display the air pressure detected by the air pressure detection device.

[0015] Furthermore, in order to better realize the present invention, an alarm device is also electrically connected to the controller.

[0016] Furthermore, in order to better realize the present invention, the bottom of the relief groove is provided with a threaded hole, and the free end of the telescopic rod of the cylinder is provided with a stud, which is screwed into the threaded hole.

[0017] Furthermore, in order to better realize the present invention, the frame includes a base plate, a connecting plate and a mounting plate, the connecting plate is connected between the mounting plate and the base plate, the positioning fixture is mounted on the base plate, the cylinder is mounted on the mounting plate and the extension rod of the cylinder faces the positioning fixture and is coaxial with the capacitor to be assembled held on the positioning fixture.

[0018] Furthermore, in order to better realize the present invention, the aluminum shell of the capacitor has a protruding screw at the center of the bottom, the positioning fixture is provided with a screw hole and the screw hole is coaxial with the telescopic rod of the cylinder, and the screw is screwed into the screw hole.

[0019] The present invention also provides a capacitor cap assembly method, using the above-described capacitor cap assembly device, the assembly method comprising the following steps:

[0020] Step 1: Install the aluminum shell of the capacitor to be assembled onto the positioning fixture, and place the cap of the capacitor to be assembled at the opening of the aluminum shell;

[0021] Step 2: Use the controller to drive the cylinder to run. The cylinder extension rod extends and moves the pressure block toward the capacitor to be assembled until the pressure block contacts the cap with the assembled capacitor. The air pressure detection device detects the air pressure in the relief groove and sends a signal back to the controller so that the controller can judge whether the cap is evenly stressed and the flatness of the cap.

[0022] Step 3: If the cap is subjected to uniform force and is flat, the controller drives the cylinder extension rod to continue extending to the extension stop point. The first position detection sensor detects the signal and sends it back to the controller, and the controller drives the cylinder to stop extending. If the cap is subjected to uneven force and / or is not flat, the controller drives the alarm device to issue an alarm signal and stops the machine.

[0023] Step 4: When the first position detection sensor detects a signal and sends it back to the controller, the controller drives the air pressure detection device to detect the air pressure in the clearance groove again and send a signal back to the controller so that the controller can determine whether the cap has been pressed down in place.

[0024] Step 5: If the cap is in place, the controller drives the cylinder to run. The cylinder extension rod retracts until the second position detection sensor detects that the cylinder extension rod has retracted to the retraction stop point and sends a signal back to the controller. The controller then drives the cylinder to stop running again.

[0025] Step 6: Manually remove the assembled capacitor.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] (1) The capacitor cap assembly device provided by the present invention includes a frame, a positioning clamp, a pressing block and a telescopic device. The positioning clamp is installed on the frame for clamping the aluminum shell of the capacitor to be assembled. The telescopic device is also installed on the frame and is used to drive the pressing block to press the cap of the capacitor to be assembled into the aluminum shell. With this structure, the present invention uses the telescopic device to drive the pressing block to replace manual pressing of the cap, so as to force the cap to be inserted into the aluminum shell with interference fit. Compared with the prior art, it has the advantage of higher efficiency. Moreover, the telescopic device extension and the pressing block pressing the cap are easier to control, greatly reducing the probability of cap breakage and scrap.

[0028] (2) The present invention also provides a capacitor cap assembly method, which uses a cylinder to drive a pressure block to press the cap into the aluminum shell of the capacitor to be assembled. During the pressing process, the first position detection sensor, the cylinder, the air pressure detection device, and the controller work together to detect the force balance and flatness of the cap at various points. This ensures that the cap is evenly stressed and flat at various points during the pressing process into the aluminum shell. The product qualification rate after pressing into the aluminum shell is extremely high, and the probability of cap scrapping is almost zero, which greatly improves the efficiency of enterprises. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the capacitor cap assembly device in this invention;

[0031] Figure 2 yes Figure 1Another perspective view of the structure shown;

[0032] Figure 3 This is a schematic diagram of the installation structure of the positioning fixture and the capacitor to be assembled in this invention;

[0033] Figure 4 This is a schematic diagram of the installation structure of the pressure block, the telescopic cylinder of the cylinder, and the air pressure detection device in this invention.

[0034] Figure 5 This is a block diagram of the electronic control principle in this invention.

[0035] In the picture:

[0036] 1-Frame; 101-Base plate; 102-Connecting plate; 103-Mounting plate;

[0037] 2-Positioning fixture; 201-Screw hole

[0038] 3-Pressure block; 301-Leaning groove; 302-Mounting hole; 303-Threaded hole;

[0039] 4-Cylinder; 401-Stud

[0040] 5-Controller;

[0041] 6-First position detection sensor;

[0042] 7-Air pressure detection device; 701-Air inlet pipe;

[0043] 8-Second position detection sensor;

[0044] 9-Display screen;

[0045] 10 - Alarm device;

[0046] 11-Capacitor to be assembled; 111-Screw;

[0047] 12-Nut. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0049] Example 1:

[0050] This embodiment provides a capacitor cap assembly device for pressing the cap of the capacitor 11 to be assembled into the aluminum shell. The assembly device includes a frame 1, a positioning clamp 2, a pressing block 3 and a telescopic device. The frame 1 serves as a support and has good rigidity, hardness and strength.

[0051] The aforementioned positioning clamp 2 is mounted on the frame 1. This clamp is used to mount and clamp the aluminum shell of the capacitor 11 to be assembled, preventing the aluminum shell from shifting when the cap is pressed into it. The aforementioned telescopic device is also mounted on the frame 1. The aforementioned pressure block 3 is mounted on the telescopic end of the telescopic device. Thus, when the telescopic device extends or retracts, it drives the pressure block 3 to move. The direction of movement of the pressure block 3 is limited to either towards or away from the cap of the capacitor 11 to be assembled. Furthermore, the pressure block 3 is directly opposite the cap, and its size is adapted to the cap. During the process of the telescopic device driving the pressure block 3 towards the cap, the pressure block 3 will contact the cap and press the cap into the aluminum shell.

[0052] By adopting this structure, mechanical equipment is used to replace manual pressing to assemble the cap on capacitor 11. Due to the greater controllability of the telescopic device's extension and retraction and the pressure of the pressing block 3 on the cap, the pressing block 3 of this invention can apply a more even downward pressure on the cap, ensuring assembly quality, minimizing the chance of cap breakage, and increasing assembly efficiency.

[0053] Example 2:

[0054] This embodiment is the preferred implementation of Embodiment 1. The telescopic device in this embodiment is a cylinder 4, and the stroke of the cylinder 4 is adjustable. This allows the invention to be applied to capacitors of various models and heights. Furthermore, multiple sets of the aforementioned positioning clamps 2 are configured, and the positioning clamps 2 are detachably fixed to the frame 1 by screws. Therefore, the user can select the appropriate positioning clamp 2 and adjust the stroke of the cylinder 4 as needed. An air source is also included to supply air to the cylinder 4 for operation. This embodiment also includes a controller 5, which is electrically connected to the cylinder 4 to control its working state. As a mechanical device, the cylinder 4 can stably output linear reciprocating motion and has strong controllability; its telescopic process can be well controlled by the controller 5.

[0055] The aforementioned pressure block 3 is installed at the free end of the telescopic rod of cylinder 4.

[0056] As another embodiment of this invention, the telescopic device in this invention may also be a device composed of a hydraulic cylinder, an electric telescopic rod, a linear motor, or a rotary motor and a transmission pair. However, in comparison, these power source devices are more expensive and have a more complex structure than cylinder 4.

[0057] In this embodiment, it is only necessary to drive the pressure block 3 to make linear reciprocating motion, and the load it bears during the motion is the frictional force of the cap of the capacitor 11 to be assembled entering the aluminum shell. The load is not large, so the cylinder 4 can meet the usage requirements and save costs.

[0058] Example 3:

[0059] This embodiment is a preferred implementation of Embodiment 2. In this embodiment, a first position detection sensor 6 is provided on the outer cylinder wall of the cylinder 4. This first position detection sensor 6 is used to detect the extension stop point of the telescopic rod. The first position detection sensor 6 is actually a magnetic detection sensor. A magnetic ring is provided on the piston of the cylinder 4. When the piston drives the telescopic rod to extend to the extension stop point, the piston moves to a position directly opposite the first position detection sensor 6. The first position detection sensor 6 detects the magnetism of the piston to confirm that the telescopic rod has extended to the extension stop point. The first position detection sensor 6 is electrically connected to the controller 5. Thus, the first position detection sensor 6 can transmit a signal to the controller 5 to inform the controller 5 that the telescopic rod of the cylinder 4 has extended to the extension stop point, so that the controller 5 can make a judgment and control.

[0060] It is worth noting that when the telescopic rod of cylinder 4 extends to the extension stop point, the telescopic rod drives the pressure block 3 to press down to the lowest point. By setting the stroke of cylinder 4, the pressure block 3 can press the cap into the aluminum shell in the best or near-best state at this point and place it in the best assembly position.

[0061] Example 4:

[0062] This embodiment is a preferred implementation of embodiment 3. In this embodiment, the surface of the pressure block 3 near the positioning fixture 2 is flat, and a relief groove 301 is provided at the center of the surface to allow the electrode on the cap to be placed. It is worth noting that the relief groove 301 can completely cover the electrode. In this case, the part that is actually pressed on the cap is a ring structure (the groove wall of the relief groove 301). This ring structure can act on the edge of the cap and drive the cap to press down, thereby making the structure more reasonable and avoiding damage to the electrode.

[0063] The side wall of the aforementioned relief groove 301 is provided with a mounting hole 302, and the air inlet pipe 701 of the air pressure detection device 7 is installed at the mounting hole 302 and communicates with the inside of the relief groove 301. When the aforementioned annular structure is pressed against the edge of the cap (that is, when the pressure block 3 contacts the cap), since the main body of the cap is a structural component made of plastic material, a good seal will be formed between the main body of the cap and the contact surface of the annular structure. As the pressure block 3 presses down more, the air pressure in the aforementioned relief groove 301 will change. The aforementioned air pressure detection device 7 can detect the change in air pressure in the relief groove 301. The air pressure detection device 7 is electrically connected to the aforementioned controller 5 to transmit the air pressure change signal in the relief groove 301 to the controller 5. The controller 5 can then determine the magnitude of the force of the pressure block 3 pressing on the cap, the pressure balance at various points on the cap, and the flatness of the cap.

[0064] The air pressure detection device 7 is actually a leak tester, model number sentinel-C28.

[0065] In addition, when the cylinder 4 telescopic rod extends to the extension stop point, the air pressure detection device 7 will be activated again to detect the air pressure in the aforementioned clearance groove 301 and send a signal back to the controller 5. The controller 5 can then determine whether the cap has been pressed down into place based on this signal.

[0066] Example 5:

[0067] This embodiment is a further improvement on embodiment 4. In this embodiment, a second position detection sensor 8 is also installed on the outer cylinder wall of cylinder 4. The second position detection sensor 8 is the same as the first position detection sensor 3, but the installation position of the second position detection sensor 8 is the position corresponding to the retraction stop point of the telescopic rod. That is, the second position detection sensor 8 can detect the signal when the piston moves to the retraction stop point of the telescopic rod. The second position detection sensor 8 is also electrically connected to the controller 5. The controller 5 can determine that a capacitor has been assembled based on the signal returned by the second position sensor 8. At this time, the user can remove the assembled capacitor.

[0068] Example 6:

[0069] This embodiment is the best implementation of embodiment 5. In this embodiment, the controller 5 is a PLC. Of course, the controller 5 can also be an MCU, a computer, or other industrial control equipment.

[0070] The controller 5 is also electrically connected to a display screen 9, which is used to display the air pressure detected by the air pressure detection device 7 and the air pressure when the cylinder 4 is running.

[0071] The controller 5 is also electrically connected to an alarm device 10. When the pressure block 3 contacts the cap, if the signal returned by the air pressure detection device 7 to the controller 5 causes the controller 5 to detect that the cap is uneven or the force is uneven, the controller 5 will drive the alarm device 10 to sound an alarm. The alarm device 10 can be a buzzer or other devices that can sound an alarm.

[0072] Example 7:

[0073] This embodiment is a specific implementation of the above embodiment. In this embodiment, the pressure block 3 is provided with a threaded hole 303. The threaded hole 303 is located at the bottom of the relief groove 301 and is coaxial with the capacitor 11 to be assembled installed on the positioning fixture 2. The free end of the telescopic rod of the cylinder 4 is provided with a stud 401. The stud 401 is screwed into the threaded hole 303 and fixed by a nut 12. This makes it easy to quickly disassemble and replace the pressure block 3.

[0074] The threaded hole 303 penetrates the bottom of the relief groove 301. To prevent leakage, sealant is filled between the threaded hole 303 and the stud 401.

[0075] Example 8:

[0076] This embodiment further defines the above embodiment. The frame 1 in this embodiment includes a base plate 101, a connecting plate 102, and a mounting plate 103. The connecting plate 102 is connected between the mounting plate 103 and the base plate 101. Specifically, the connecting plate 102 includes two vertical flat plates. The bottom of the flat plates is provided with mounting ears. The mounting ears are detachably and fixedly installed on the upper surface of the base plate 101 by screws. The upper surface of the base plate 101 is a plane. The positioning clamp 2 is also detachably and fixedly installed at the center of the upper surface of the base plate 101 by other screws.

[0077] The mounting plate 103 is detachably fixed between the upper ends of two vertical flat plates by additional screws. At this time, the connecting plate 102 and the mounting plate 103 form an arch bridge structure. The cylinder 4 is installed in the middle of the mounting plate 103, and the telescopic rod of the cylinder 4 faces the positioning fixture 2 and is coaxial with the capacitor 11 to be assembled held on the positioning fixture 2.

[0078] Example 9:

[0079] This embodiment is a specific implementation of the above embodiment. In this embodiment, the aluminum shell of the capacitor 11 to be assembled has a protruding screw 111 at the center of the bottom. The positioning fixture 2 is provided with a screw hole 201 and the screw hole 201 is coaxial with the telescopic rod of the cylinder 4. The screw 111 is screwed into the screw hole 201, thereby positioning the aluminum shell of the capacitor 11 to be assembled and firmly installing it on the positioning fixture 2, and making it convenient and quick to disassemble and assemble.

[0080] Example 10:

[0081] This embodiment provides a capacitor cap assembly method. The assembly method uses the aforementioned capacitor cap assembly device and includes the following steps:

[0082] Step 1: Install the aluminum shell of the capacitor 11 to be assembled onto the positioning fixture 2, and place the cap of the capacitor 11 to be assembled at the opening of the aluminum shell.

[0083] Step 2: The controller 5 drives the cylinder 4 to run. The cylinder 4 extends its telescopic rod and moves the pressure block 3 toward the capacitor 11 to be assembled until the pressure block 3 contacts the cap with the capacitor 11 to be assembled. The air pressure detection device 7 detects the air pressure in the relief groove 301 and sends a signal back to the controller 5 so that the controller 5 can judge whether the cap is evenly stressed and the flatness of the cap.

[0084] Step 3: If the cap is subjected to uniform force and is flat, the controller 5 drives the cylinder 4 telescopic rod to continue extending to the extension stop point. The first position detection sensor 6 detects the signal and sends it back to the controller 5. The controller 5 drives the cylinder 4 to stop extending. If the cap is subjected to uneven force and / or is not flat, the controller 5 drives the alarm device 10 to issue an alarm signal and stop the machine.

[0085] Step 4: When the first position detection sensor 6 detects a signal and sends it back to the controller 5, the controller 5 drives the air pressure detection device 7 to detect the air pressure in the clearance groove 301 again and send a signal back to the controller 5 so that the controller 5 can determine whether the cap has been pressed down in place.

[0086] Step 5: If the cap is in place, the controller 5 drives the cylinder 4 to run. The cylinder 4 telescopic rod retracts until the second position detection sensor 8 detects that the cylinder 4 telescopic rod has retracted to the retraction stop point and sends a signal back to the controller 5. The controller 5 then drives the cylinder to stop running again.

[0087] Step 6: Manually remove the assembled capacitor.

[0088] Using this method, the cylinder 4 drives the pressure block 3 to press the cap into the aluminum shell of the capacitor 11 to be assembled. During the pressing process, the first position detection sensor 6, the cylinder 4, the air pressure detection device 7, and the controller 5 are used to detect the uniformity of force and the flatness of the cap of the capacitor 11 to be assembled. This ensures that the cap is pressed into the aluminum shell with uniform force and is in a flat state. The product qualification rate after pressing into the aluminum shell is high, and the probability of cap scrap is almost zero, which greatly improves the efficiency of enterprises.

[0089] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A capacitor cap assembly device, characterized in that, include: Frame; A positioning fixture, which is mounted on the frame for mounting the aluminum shell of the capacitor to be assembled; A pressure block and a telescopic device, wherein the telescopic device is mounted on the frame and drives the pressure block to press the cap of the capacitor to be assembled into the aluminum shell; The surface of the pressure block near the positioning fixture is flat, and a relief groove is provided at the center of the surface to accommodate the electrode on the cap. The side wall of the relief groove is provided with a mounting hole. It also includes a pressure detection device with an air inlet pipe. The air inlet pipe is installed at the mounting hole and communicates with the relief groove. The pressure detection device is electrically connected to the controller. The controller is also used to: when the pressure block contacts the cap, use the air pressure in the relief groove detected by the air pressure detection device to determine whether the cap is evenly stressed and the flatness of the cap; The relief groove can completely enclose the electrode, and the part that presses on the cap is a ring structure. This ring structure can act on the edge of the cap and drive the cap to press down, so that the cap body will form a good seal with the contact surface of the ring structure.

2. The capacitor cap assembly device according to claim 1, characterized in that: The telescopic device is a cylinder with adjustable stroke, and also includes a controller, which is electrically connected to the cylinder to control the working state of the cylinder.

3. The capacitor cap assembly device according to claim 2, characterized in that: The cylinder is equipped with a first position detection sensor for detecting the extension stop point of the telescopic rod, and the first position detection sensor is electrically connected to the controller.

4. The capacitor cap assembly device according to claim 3, characterized in that: The cylinder is also equipped with a second position detection sensor for detecting the retraction stop point of the telescopic rod, and the second position detection sensor is electrically connected to the controller.

5. A capacitor cap assembly device according to claim 4, characterized in that: The controller is a PLC.

6. The capacitor cap assembly device according to claim 5, characterized in that: The controller is also electrically connected to a display screen to display the air pressure detected by the air pressure detection device.

7. A capacitor cap assembly device according to claim 6, characterized in that: An alarm device is also electrically connected to the controller.

8. A capacitor cap assembly device according to any one of claims 4-7, characterized in that: The bottom of the relief groove is provided with a threaded hole, and the free end of the cylinder's telescopic rod is provided with a stud, which is screwed into the threaded hole.

9. A capacitor cap assembly device according to claim 8, characterized in that: The frame includes a base plate, a connecting plate, and a mounting plate. The connecting plate is connected between the mounting plate and the base plate. The positioning fixture is mounted on the base plate. The cylinder is mounted on the mounting plate, and the extension rod of the cylinder faces the positioning fixture and is coaxial with the capacitor to be assembled held on the positioning fixture.

10. A capacitor cap assembly device according to claim 2, characterized in that: The capacitor has a protruding screw at the center of the bottom of its aluminum shell. The positioning fixture has a screw hole that is coaxial with the telescopic rod of the cylinder. The screw is screwed into the screw hole.

11. A method for assembling a capacitor cap, characterized in that, The assembly method, comprising the capacitor cap assembly apparatus of claim 7, further includes the following steps: Step 1: Install the aluminum shell of the capacitor to be assembled onto the positioning fixture, and place the cap of the capacitor to be assembled at the opening of the aluminum shell; Step 2: Use the controller to drive the cylinder to run. The cylinder extension rod extends and moves the pressure block toward the capacitor to be assembled until the pressure block contacts the cap with the assembled capacitor. The air pressure detection device detects the air pressure in the relief groove and sends a signal back to the controller so that the controller can judge whether the cap is evenly stressed and the flatness of the cap. Step 3: If the cap is subjected to uniform force and is flat, the controller drives the cylinder extension rod to continue extending to the extension stop point. The first position detection sensor detects the signal and sends it back to the controller, and the controller drives the cylinder to stop extending. If the cap is subjected to uneven force and / or is not flat, the controller drives the alarm device to issue an alarm signal and stops the machine. Step 4: When the first position detection sensor detects a signal and sends it back to the controller, the controller drives the air pressure detection device to detect the air pressure in the clearance groove again and send a signal back to the controller so that the controller can determine whether the cap has been pressed down in place. Step 5: If the cap is in place, the controller drives the cylinder to run. The cylinder extension rod retracts until the second position detection sensor detects that the cylinder extension rod has retracted to the retraction stop point and sends a signal back to the controller. The controller then drives the cylinder to stop running again. Step 6: Manually remove the assembled capacitor.

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