Cap closure damping device

Abstract

This application provides a cover-closing buffer device, which includes at least one cylinder, a magnetic switch, a first solenoid valve, and a throttle valve. The cylinder is connected to the cover and the housing. During the gradual shortening of the at least one cylinder, the cylinder drives the cover to gradually close relative to the housing. The magnetic switch is connected to the cylinder barrel of any cylinder and is electrically connected to the first solenoid valve. When the cover closes to the target position relative to the housing, any cylinder triggers the magnetic switch to transmit a switching signal to the first solenoid valve. During the gradual shortening of the at least one cylinder, before the first solenoid valve receives the switching signal, the first solenoid valve is directly connected between the rodless chamber of each cylinder and the atmospheric pressure space. After the first solenoid valve receives the switching signal, it is directly connected between the rodless chamber of each cylinder and the air inlet of the throttle valve. The air outlet of the throttle valve is connected to the atmospheric pressure space. This solution can reduce maintenance costs.

Description

Technical Field

[0001] This application relates to the field of processing equipment technology, and in particular to a cover closure buffer device. Background Technology

[0002] In order to ensure the reliability of the processing environment as much as possible during the motor processing, some processes are carried out on equipment with heavy covers. For example, a heavy-covered base cleaning machine is used in the motor base cleaning process.

[0003] The current base cleaning machine includes a housing and a cover. The top of the housing is open, and the cover is hinged to the opening at the top of the housing. A cylinder is installed between the housing and the cover to drive the cover to close or open relative to the housing. When using the base cleaning machine, first put the base to be cleaned into the housing, then control the cylinder to drive the cover to close relative to the housing, and then start the base cleaning machine to clean the base.

[0004] However, during the process of the cylinder driving the cover to close relative to the box, the cover is relatively heavy and located at the top of the box, making it more prone to impact. As a result, the machine base cleaning machine often suffers from hinge damage, sheet metal deformation, or cylinder damage. Each time a failure occurs, the cover must be reshaped by electric welding or gas cutting, or the damaged cylinder must be replaced, resulting in high maintenance costs. Utility Model Content

[0005] In view of this, the cover closure buffer device provided in this application can reduce maintenance costs.

[0006] This application provides a cover closing buffer device for buffering the cover of an equipment when it closes relative to the housing. The buffer device includes at least one cylinder, a magnetic switch, a first solenoid valve, and a throttle valve. The cylinder is connected to both the cover and the housing. As the at least one cylinder gradually shortens, it drives the cover to gradually close relative to the housing. The magnetic switch is connected to the cylinder barrel of any one of the cylinders and is electrically connected to the first solenoid valve. As the at least one cylinder gradually shortens, and when the cover closes to the target position relative to the housing... A magnetic ring installed on the piston of any cylinder triggers the magnetic switch to transmit a switching signal to the first solenoid valve. The target position is any position where the cover is not fully closed during the gradual closing process relative to the housing. During the gradual shortening of at least one cylinder, before the first solenoid valve receives the switching signal, the first solenoid valve is directly connected between the rodless chamber of each cylinder and the atmospheric pressure space outside the cylinder. After the first solenoid valve receives the switching signal, the first solenoid valve is directly connected between the rodless chamber of each cylinder and the inlet of the throttle valve. The outlet of the throttle valve is connected to the atmospheric pressure space.

[0007] In one possible implementation, the first solenoid valve is a two-position five-way solenoid valve; inside the first solenoid valve, when the first solenoid valve is not energized, the target working port of the first solenoid valve is connected to the air inlet of the first solenoid valve, and when the first solenoid valve is energized, the target working port of the first solenoid valve is connected to the target exhaust port of the first solenoid valve; outside the first solenoid valve, the target working port of the first solenoid valve is connected to the rodless chamber of each cylinder as the at least one cylinder gradually shortens, the air inlet of the first solenoid valve is connected to the atmospheric pressure space, and the target exhaust port is connected to the air inlet of the throttle valve; before the first solenoid valve receives the switching signal, the first solenoid valve is not energized, and after the first solenoid valve receives the switching signal, the first solenoid valve is energized.

[0008] In one possible implementation, as the at least one cylinder gradually extends, the at least one cylinder drives the cover to gradually open relative to the housing, and the target working port of the first solenoid valve is not connected to the rodless chamber of each cylinder during the gradual extension of the at least one cylinder.

[0009] In one possible implementation, the buffer device further includes a second solenoid valve; the second solenoid valve is a three-position five-way solenoid valve; inside the second solenoid valve, when the second solenoid valve is energized and in a first working state, the first working port of the second solenoid valve is connected to the first exhaust port of the second solenoid valve, and the second working port of the second solenoid valve is connected to the air inlet of the second solenoid valve; when the second solenoid valve is energized and in a second working state, the first working port of the second solenoid valve is connected to the air inlet of the second solenoid valve, and the second working port of the second solenoid valve is connected to the second exhaust port of the second solenoid valve; outside the second solenoid valve, the first working port of the second solenoid valve is connected to the rod chamber of each cylinder, the second working port of the second solenoid valve is connected to the rodless chamber of each cylinder, the second exhaust port of the second solenoid valve is connected to the target working port of the first solenoid valve, and the air inlet of the second solenoid valve is connected to an air source; during the gradual extension of at least one cylinder, the second solenoid valve is energized and in the first working state; during the gradual shortening of at least one cylinder, the second solenoid valve is energized and in the second working state.

[0010] In one possible implementation, when the second solenoid valve is not energized, any two of the following ports inside the second solenoid valve—the air inlet, the first working port, the second working port, the first exhaust port, and the second exhaust port—are not connected.

[0011] In one possible implementation, the distance between the magnetic switch and the first end of the cylinder barrel of any cylinder is greater than the distance between the magnetic switch and the second end of the cylinder barrel of any cylinder, wherein the first end of the cylinder barrel is the end of the cylinder barrel from which the piston rod extends, and the second end of the cylinder barrel is the end of the cylinder barrel from which the piston rod does not extend.

[0012] In one possible implementation, one end of the cover is hinged to the box body; the cylinder barrel is rotatably connected to the outer wall of the box body about a first axis parallel to the hinge axis, wherein the hinge axis is the axis on which the cover and the box body are hinged; the piston rod of the cylinder is rotatably connected to the outer wall of the cover body about a second axis parallel to the hinge axis, wherein any two of the first axis, the second axis, and the hinge axis do not coincide.

[0013] In one possible implementation, one end of the cover is hinged to the box body; the cylinder barrel is rotatably connected to the outer wall of the cover body about a third axis parallel to the hinge axis, wherein the hinge axis is the axis on which the cover body and the box body are hinged; the piston rod of the cylinder is rotatably connected to the outer wall of the box body about a fourth axis parallel to the hinge axis, wherein any two of the third axis, the fourth axis, and the hinge axis do not coincide.

[0014] In one possible implementation, the number of cylinders is set to two, and the two cylinders are distributed on both sides of the device in a direction parallel to the hinge axis.

[0015] In one possible implementation, the magnetic switch is detachably connected to the cylinder barrel of any of the cylinders.

[0016] As can be seen from the above technical solution, the cover closing buffer device includes a cylinder, a magnetic switch, a first solenoid valve, and a throttle valve. The cylinder is connected to the cover and the box. The magnetic switch is connected to the cylinder barrel of any cylinder. The first solenoid valve is electrically connected to the magnetic switch. During the process of the cylinder gradually shortening, the cylinder will drive the cover to gradually close relative to the box. When the cover closes to the target position relative to the box, the magnetic ring of the cylinder equipped with the magnetic switch triggers the magnetic switch to transmit a switching signal to the first solenoid valve. Before the first solenoid valve receives the switching signal, the first solenoid valve is directly connected between the rodless chamber of each cylinder and the atmospheric pressure space outside the cylinder. After the first solenoid valve receives the switching signal, the first solenoid valve is directly connected between the rodless chamber of each cylinder and the air inlet of the throttle valve. The air outlet of the throttle valve is connected to the atmospheric pressure space. Therefore, compared to the method where the cylinder drives the device's cover to gradually close relative to the housing, which is more prone to impact, in this application, during the gradual shortening of the cylinder, the rodless chamber of each cylinder gradually discharges gas into the atmospheric pressure space, causing the device's cover to gradually close relative to the housing. Before the cover closes to the target position relative to the housing, the first solenoid valve does not receive the switching signal transmitted by the magnetic switch. Consequently, the rodless chamber of each cylinder is directly connected to the atmospheric pressure space through the first solenoid valve. After the cover closes to the target position relative to the housing, the first solenoid valve... Having received the switching signal transmitted by the magnetic switch, the rodless chamber of each cylinder is connected to the atmospheric pressure space through the first solenoid valve and the throttle valve. The throttle valve can slow down the speed at which the gas is discharged from the rodless chamber of the cylinder into the atmospheric pressure space, thereby buffering the closing of the cover relative to the housing. Therefore, during the process of the cover gradually closing relative to the housing, when the cover closes to the target position relative to the housing, the throttle valve can control the cylinder to buffer the cover, reducing the possibility of impact between the cover and the housing, reducing the failure rate of the equipment, and achieving the goal of reducing maintenance costs. Attached Figure Description

[0017] Figure 1 This is a pneumatic circuit diagram of a cover closure buffer device provided in one embodiment of this application.

[0018] List of reference numerals in the attached diagram:

[0019] 1: Cover body 2: Box body 3: Cylinder

[0020] 4: Magnetic switch; 5: First solenoid valve; 6: Throttle valve

[0021] 7: Second solenoid valve; 71: Air source Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0023] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] As mentioned earlier, in order to ensure the reliability of the processing environment during motor manufacturing, some processes are carried out using equipment with heavy covers. For example, a heavy-cover motor base cleaning machine is used in the motor base cleaning process. Current motor base cleaning machines consist of a housing and a cover. The top of the housing is open, and the cover is hinged to the opening at the top of the housing. A cylinder is installed between the housing and the cover to drive the cover to close or open relative to the housing. When using the motor base cleaning machine, the base to be cleaned is first placed into the housing, and then the cylinder is controlled to drive the cover to close relative to the housing before starting the cleaning machine to clean the base. However, during the process of the cylinder driving the cover to close relative to the housing, the cover is heavy and located at the top of the housing, making it prone to impact. This often leads to problems such as hinge damage, sheet metal deformation, or cylinder damage in the motor base cleaning machine. Each time a problem occurs, the cover must be reshaped by electric welding or gas cutting, or the damaged cylinder must be replaced, resulting in high maintenance costs.

[0025] In this embodiment, the cover closing buffer device includes a cylinder, a magnetic switch, a first solenoid valve, and a throttle valve. The cylinder is connected to the cover and the housing. The magnetic switch is connected to the cylinder barrel of any cylinder. The first solenoid valve is electrically connected to the magnetic switch. As the cylinder gradually shortens, it drives the cover to gradually close relative to the housing. When the cover closes to the target position relative to the housing, the magnetic ring of the cylinder equipped with the magnetic switch triggers the magnetic switch to transmit a switching signal to the first solenoid valve. Before the first solenoid valve receives the switching signal, it is directly connected between the rodless chamber of each cylinder barrel and the atmospheric pressure space outside the cylinder barrel. After the first solenoid valve receives the switching signal, it is directly connected between the rodless chamber of each cylinder barrel and the air inlet of the throttle valve. The air outlet of the throttle valve is connected to the atmospheric pressure space. Therefore, compared to the method where the cylinder drives the device's cover to gradually close relative to the housing, which is more prone to impact, in this application, during the gradual shortening of the cylinder, the rodless chamber of each cylinder gradually discharges gas into the atmospheric pressure space, causing the device's cover to gradually close relative to the housing. Before the cover closes to the target position relative to the housing, the first solenoid valve does not receive the switching signal transmitted by the magnetic switch. Consequently, the rodless chamber of each cylinder is directly connected to the atmospheric pressure space through the first solenoid valve. After the cover closes to the target position relative to the housing, the first solenoid valve... Having received the switching signal transmitted by the magnetic switch, the rodless chamber of each cylinder is connected to the atmospheric pressure space through the first solenoid valve and the throttle valve. The throttle valve can slow down the speed at which the gas is discharged from the rodless chamber of the cylinder into the atmospheric pressure space, thereby buffering the closing of the cover relative to the housing. Therefore, during the process of the cover gradually closing relative to the housing, when the cover closes to the target position relative to the housing, the throttle valve can control the cylinder to buffer the cover, reducing the possibility of impact between the cover and the housing, reducing the failure rate of the equipment, and achieving the goal of reducing maintenance costs.

[0026] The cover closure buffer device provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0027] The cover closing buffer device provided in this application embodiment is used to buffer the cover when the cover of the device is closed relative to the housing of the device. The device is, for example, a base cleaning machine.

[0028] Figure 1 This is a pneumatic circuit diagram of a cover closure buffer device provided in one embodiment of this application. Figure 1As shown, the buffer device includes at least one cylinder 3, a magnetic switch 4, a first solenoid valve 5, and a throttle valve 6. The cylinder 3 is connected to the cover 1 and the housing 2. All cylinders 3 are identical and synchronously shorten and extend. During the process of at least one cylinder 3 gradually shortening (the piston rod of the cylinder 3 gradually moves towards the retracted cylinder) (during which gas is gradually discharged from the rodless chamber of each cylinder 3 and gas is gradually introduced into the rod chamber of each cylinder 3), the at least one cylinder 3 drives the cover 1 to gradually close relative to the housing 2. The magnetic switch 4 is connected to the cylinder of any cylinder 3, for example, on the outer wall of the cylinder. The magnetic switch 4 is electrically connected to the first solenoid valve 5. During the process of at least one cylinder 3 gradually shortening, and when the cover 1 closes relative to the housing 2 to the target position, the magnetic ring installed on the piston of the cylinder 3 connected to the magnetic switch 4 triggers the magnetic switch 4 to transmit a switching signal to the first solenoid valve 5. The target position is when the cover 1 gradually closes relative to the housing 2. During the closing process, any position that is not completely closed can be specifically set according to actual needs, and this application embodiment does not limit this; during the process of at least one cylinder 3 gradually shortening, before the first solenoid valve 5 receives the switching signal, the first solenoid valve 5 is directly connected between the rodless chamber of each cylinder and the atmospheric pressure space outside the cylinder (the atmospheric pressure space can be the atmospheric pressure working space where the equipment is located). After the first solenoid valve 5 receives the switching signal, the first solenoid valve 5 is directly connected between the rodless chamber of each cylinder and the air inlet of the throttle valve 6; the air outlet of the throttle valve 6 is connected to the atmospheric pressure space. The throttle valve 6 is a valve that controls the flow rate of fluid. Based on this, within the same time period, the air flow rate of the rodless chamber of the cylinder flowing into the atmospheric pressure space through the first solenoid valve 5 and the throttle valve 6 is less than the air flow rate of the rodless chamber of the cylinder flowing into the atmospheric pressure space only through the first solenoid valve 5, so that the speed at which the rodless chamber of the cylinder discharges gas through the first solenoid valve 5 and the throttle valve 6 is less than the speed at which the rodless chamber of the cylinder discharges gas only through the first solenoid valve 5.

[0029] In this embodiment, the cover closing buffer device includes a cylinder 3, a magnetic switch 4, a first solenoid valve 5, and a throttle valve 6. The cylinder 3 is connected to the cover 1 and the housing 2. The magnetic switch 4 is connected to the cylinder barrel of any cylinder 3. The first solenoid valve 5 is electrically connected to the magnetic switch 4. As the cylinder 3 gradually shortens, the cylinder 3 will drive the cover 1 to gradually close relative to the housing 2. When the cover 1 closes relative to the housing 2 to the target position, the magnetic ring of the cylinder 3 equipped with the magnetic switch 4 triggers the magnetic switch 4 to transmit a switching signal to the first solenoid valve 5. Before the first solenoid valve 5 receives the switching signal, the first solenoid valve 5 is directly connected between the rodless chamber of each cylinder barrel and the atmospheric pressure space outside the cylinder barrel. After the first solenoid valve 5 receives the switching signal, the first solenoid valve 5 is directly connected between the rodless chamber of each cylinder barrel and the air inlet of the throttle valve 6. The air outlet of the throttle valve 6 is connected to the atmospheric pressure space. Therefore, compared to the solution where the cylinder 3 drives the cover 1 of the device to gradually close relative to the housing 2, which is more prone to impact, in this application, during the gradual shortening of the cylinder 3, the rodless chamber of each cylinder 3 gradually discharges gas into the atmospheric pressure space, causing the cover 1 of the device to gradually close relative to the housing 2. Before the cover 1 closes relative to the housing 2 to the target position, the first solenoid valve 5 does not receive the switching signal transmitted by the magnetic switch 4. Therefore, the rodless chamber of each cylinder is directly connected to the atmospheric pressure space through the first solenoid valve 5. After the cover 1 closes relative to the housing 2 to the target position, the first solenoid valve 5... Having received the switching signal transmitted by the magnetic switch 4, the rodless chamber of each cylinder is connected to the atmospheric pressure space through the first solenoid valve 5 and the throttle valve 6. The throttle valve 6 can slow down the speed at which the gas is discharged from the rodless chamber of the cylinder into the atmospheric pressure space, thereby buffering the closing of the cover 1 relative to the housing 2. Therefore, during the gradual closing process of the cover 1 relative to the housing 2, when the cover 1 is closed to the target position relative to the housing 2, the throttle valve 6 can control the cylinder 3 to buffer the cover 1, reducing the possibility of impact between the cover 1 and the housing 2, reducing the failure rate of the equipment, and achieving the goal of reducing maintenance costs.

[0030] Furthermore, reducing equipment failure rates can also alleviate the workload of staff.

[0031] Optionally, such as Figure 1 As shown, the magnetic switch 4 can be electrically connected to the first solenoid valve 5 through an intermediate relay. The intermediate relay can be installed in an electrical cabinet (not shown in the figure). Based on this, the magnetic switch 4 can transmit a switching signal to the first solenoid valve 5 through the intermediate relay.

[0032] In one possible implementation, such as Figure 1As shown, the first solenoid valve 5 is a two-position five-way solenoid valve, for example, it can be a single-control two-position five-way solenoid valve. This two-position five-way solenoid valve is a solenoid valve with five air ports and the valve core has two working positions. The five air ports of the two-position five-way solenoid valve include two working ports (denoted as working port A1 and working port B1 respectively), two exhaust ports (denoted as exhaust port R1 and exhaust port S1 respectively), and one air inlet (denoted as air inlet P1). The two working positions of the valve core of the two-position five-way solenoid valve are denoted as the first working position and the second working position respectively. When the two-position five-way solenoid valve is not energized, the valve core is in the first working position. At this time, P1 is connected to A1, B1 is connected to S1, and R1 is not connected to other air ports. When the two-position five-way solenoid valve is energized, the valve core is in the second working position. At this time, A1 and R1 are connected, P1 and B1 are connected, and S1 is not connected to other air ports. Based on this:

[0033] Inside the first solenoid valve 5, when the first solenoid valve 5 is not energized, the valve core of the first solenoid valve 5 is located in the first working position, and the target working port (A1) of the first solenoid valve 5 is connected to the air inlet (P1) of the first solenoid valve 5. When the first solenoid valve 5 is energized, the valve core of the first solenoid valve 5 is located in the second working position, and the target working port of the first solenoid valve 5 is connected to the target exhaust port (R1) of the first solenoid valve 5. Outside the first solenoid valve 5, the target working port of the first solenoid valve 5 is connected to the rodless chamber of each cylinder during the process of the gradual shortening of at least one cylinder 3. The air inlet of the first solenoid valve 5 is connected to the atmospheric pressure space, and the target exhaust port is connected to the air inlet of the throttle valve 6. Before the first solenoid valve 5 receives the switching signal, the first solenoid valve 5 is not energized. After the first solenoid valve 5 receives the switching signal, the first solenoid valve 5 is energized.

[0034] In this embodiment, based on the internal working principle and external connection of the first solenoid valve 5, during the gradual shortening of at least one cylinder 3, before the first solenoid valve 5 receives the switching signal, the first solenoid valve 5 is not energized. Since the target working port and the air inlet of the first solenoid valve 5 are connected at this time, and the first solenoid valve 5 is not energized, the rodless chamber of each cylinder can be discharged into the atmospheric pressure space after passing through the target working port and the air inlet of the first solenoid valve 5 in sequence. This realizes that the first solenoid valve 5 is directly connected between the rodless chamber of each cylinder and the atmospheric pressure space outside the cylinder. During the gradual shortening of at least one cylinder 3, after the first solenoid valve 5 receives the switching signal, the first solenoid valve 5 is energized. Since the target working port and the target exhaust port of the first solenoid valve 5 are connected at this time, the rodless chamber of each cylinder can be discharged into the atmospheric pressure space after passing through the target working port, the target exhaust port and the throttle valve 6 in sequence. This realizes that the first solenoid valve 5 is directly connected between the rodless chamber of each cylinder and the air inlet of the throttle valve 6. Therefore, the automatic switching between whether the first solenoid valve 5 is connected to the throttle valve 6 can be achieved through a two-position five-way first solenoid valve 5. The structure is simple, the cost is low, and the failure rate is also low.

[0035] In one possible implementation, such as Figure 1 As shown, during the process of at least one cylinder 3 gradually extending (the piston rod of cylinder 3 gradually moves in the direction of extending out of the cylinder barrel) (during this process, gas gradually enters the rodless chamber of each cylinder barrel and gas gradually exits the rod chamber of each cylinder barrel), the at least one cylinder 3 drives the cover 1 to gradually open relative to the box 2, and the target working port of the first solenoid valve 5 is not connected to the rodless chamber of each cylinder barrel during the process of at least one cylinder 3 gradually extending.

[0036] In this embodiment, during the gradual extension of at least one cylinder 3, the target working port of the first solenoid valve 5 is not connected to the rodless chamber of each cylinder, which can minimize the possibility that the throttle valve 6 will affect the normal operation of the cylinder 3 when the cylinder 3 gradually extends, thereby improving the efficiency of opening the cover 1 of the equipment relative to the housing 2.

[0037] In one possible implementation, such as Figure 1As shown, the buffer device also includes a second solenoid valve 7; the second solenoid valve 7 is a three-position five-way solenoid valve, for example, a center-sealed three-position five-way solenoid valve. This three-position five-way solenoid valve is a solenoid valve with five vent ports and a valve core with three working positions. The five vent ports of the three-position five-way solenoid valve include two working ports (denoted as working port A2 and working port B2, respectively), two exhaust ports (denoted as exhaust port R2 and exhaust port S2, respectively), and one inlet port (denoted as inlet port P2). The three working positions of the valve core of the three-position five-way solenoid valve are respectively denoted as the third working position, the fourth working position, the fifth working position, the sixth working position, the seventh working position, and the eleventh working position. The three-position five-way solenoid valve is in its third working position when it is not energized. At this position, any two of the air ports A2, B2, R2, S2, and P2 are not connected. When the first coil of the three-position five-way solenoid valve is energized, the valve core is in its fourth working position. At this position, A2 and R2 are connected, P2 and B2 are connected, and S2 is not connected to any other air port. When the second coil of the three-position five-way solenoid valve is energized, the valve core is in its fifth working position. At this position, B2 and S2 are connected, P2 and A2 are connected, and A2 is not connected to any other air port. Based on this:

[0038] Inside the second solenoid valve 7, when the second solenoid valve 7 is energized and in the first working state (the first coil of the second solenoid valve 7 is energized, and the valve core is in the fourth working position), the first working port (A2) of the second solenoid valve 7 is connected to the first exhaust port (R2), and the second working port (B2) of the second solenoid valve 7 is connected to the air inlet (P2). When the second solenoid valve 7 is energized and in the second working state (the second coil of the second solenoid valve 7 is energized, and the valve core is in the fifth working position), the first working port of the second solenoid valve 7 is connected to the air inlet of the second solenoid valve 7. The second working port is connected to the second exhaust port (S2) of the second solenoid valve 7; outside the second solenoid valve 7, the first working port of the second solenoid valve 7 is connected to the rod chamber of each cylinder, the second working port of the second solenoid valve 7 is connected to the rodless chamber of each cylinder, the second exhaust port of the second solenoid valve 7 is connected to the target working port of the first solenoid valve 5, and the air inlet of the second solenoid valve 7 is connected to the air source 71; during the process of the above-mentioned at least one cylinder 3 gradually extending, the second solenoid valve 7 is energized and is in the first working state; during the process of the above-mentioned at least one cylinder 3 gradually shortening, the second solenoid valve 7 is energized and is in the second working state.

[0039] In this embodiment, based on the internal working principle and external connection of the second solenoid valve 7, during the gradual elongation of at least one cylinder 3, the second solenoid valve 7 is energized and in a first working state. Since the first working port of the second solenoid valve 7 is connected to the first exhaust port and the second working port is connected to the intake port, the air source 71 can introduce gas into the rodless chamber of each cylinder through the intake port and the second working port of the second solenoid valve 7. Simultaneously, the gas in the rod chamber of each cylinder can be discharged to the atmospheric pressure space through the first working port and the first exhaust port of the second solenoid valve 7. Furthermore, since the second exhaust port of the second solenoid valve 7 is not connected to other air inlets of the second solenoid valve 7, the target working port of the first solenoid valve 5 is connected to each cylinder. The first solenoid valve 5 is not connected to the rodless chamber of each cylinder during the gradual extension of cylinder 3. During the gradual shortening of at least one cylinder 3, the second solenoid valve 7 is energized and in a second operating state. At this time, since the first operating port of the second solenoid valve 7 is connected to the air inlet and the second operating port is connected to the second exhaust port, the air source 71 can supply gas to the rod chamber of each cylinder through the air inlet and the first operating port of the second solenoid valve 7. Simultaneously, the gas in the rodless chamber of each cylinder can be discharged to the target operating port of the first solenoid valve 5 through the second operating port and the second exhaust port of the second solenoid valve 7. This achieves communication between the target operating port of the first solenoid valve 5 and the rodless chamber of each cylinder during the gradual shortening of cylinder 3. Therefore, automatic switching between the target operating port of the first solenoid valve 5 and the rodless chamber of each cylinder can be achieved through a single three-position, five-way second solenoid valve 7. This design is simple, low-cost, and has a low failure rate.

[0040] In one possible implementation, such as Figure 1 As shown, when the second solenoid valve 7 is not energized, any two of the following ports—the air inlet, the first working port, the second working port, the first exhaust port, and the second exhaust port—are not connected inside the second solenoid valve 7. Therefore, the second solenoid valve 7 in this application can be a center-sealed three-position five-way solenoid valve, which can maintain the air pressure in the rod-side and rodless-side chambers of the cylinder 3 at least for a period of time after power failure, minimizing air pressure fluctuations when the second solenoid valve 7 is not energized and reducing the possibility of accidental operation of the cover 1 due to the power failure of the second solenoid valve 7.

[0041] In one possible implementation, such as Figure 1 As shown, for the cylinder 3 connected with the magnetic switch 4, the distance between the magnetic switch 4 and the first end of the cylinder barrel of the cylinder 3 is greater than the distance between the magnetic switch 4 and the second end of the cylinder barrel of the cylinder 3. The first end of the cylinder barrel is the end of the cylinder barrel from which the piston rod extends, and the second end of the cylinder barrel is the end of the cylinder barrel from which the piston rod does not extend.

[0042] Therefore, during the closing process of the cover 1 relative to the box 2, the impact phenomenon is more likely to occur when it is about to be fully closed compared to when it just begins to close. By setting the distance between the magnetic switch 4 and the second end of the cylinder to be closer, the magnetic switch 4 can transmit a switching signal to the first solenoid valve 5 when the cover 1 is about to be fully closed relative to the box 2, so that the throttle valve 6 can buffer the cover 1 in time when the impact phenomenon is more likely to occur. Compared with the fact that the buffering of the cover 1 begins when the cover 1 is just beginning to close relative to the box 2, the efficiency of closing the cover 1 relative to the box 2 is improved.

[0043] There are at least two possible ways to connect cylinder 3:

[0044] In the first possible implementation, such as Figure 1 As shown, one end of the cover 1 is hinged to the box 2; the cylinder of the cylinder 3 is rotatably connected to the outer wall of the box 2 about a first axis parallel to the hinge axis, wherein the hinge axis is the axis on which the cover 1 and the box 2 are hinged; the piston rod of the cylinder 3 is rotatably connected to the outer wall of the cover 1 about a second axis parallel to the hinge axis, wherein any two of the first axis, the second axis and the hinge axis do not coincide.

[0045] In the second possible implementation, one end of the cover 1 is hinged to the box 2; the cylinder of the cylinder 3 is rotatably connected to the outer wall of the cover 1 about a third axis parallel to the hinge axis, wherein the hinge axis is the axis on which the cover 1 and the box 2 are hinged; the piston rod of the cylinder 3 is rotatably connected to the outer wall of the box 2 about a fourth axis parallel to the hinge axis, wherein any two of the third axis, the fourth axis and the hinge axis do not coincide.

[0046] It should be noted that the attached diagram illustrates the first possible implementation method described above.

[0047] Therefore, both of the above possible implementation methods can achieve the opening and closing of the cover 1 relative to the box 2 by extending and retracting the cylinder 3. In the first possible implementation method, the pressure borne by the cylinder is greater than the pressure borne by the telescopic rod, which can reduce the possibility of the cylinder 3 being damaged.

[0048] In one possible implementation, such as Figure 1 As shown, the number of cylinders 3 is set to two. The two cylinders 3 are distributed on both sides of the equipment along a direction parallel to the hinge axis. As a result, the two cylinders 3 are subjected to more even force, which can reduce the possibility of cylinder 3 being damaged and extend its service life.

[0049] In one possible implementation, such as Figure 1As shown, for the cylinder 3 connected with the magnetic switch 4, the magnetic switch 4 is detachably connected to the cylinder barrel of the cylinder 3. For example, the magnetic switch 4 can be snapped onto the outer wall of the cylinder barrel. This embodiment of the application does not limit this. Therefore, it is convenient to repair and replace the magnetic switch 4.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0051] Finally, it should be noted that the above are merely preferred embodiments of this utility model, used only to illustrate the technical solution of this utility model, and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A lid closing damping device for damping a lid (1) of an apparatus when the lid (1) is closed with respect to a case (2) of the apparatus, characterized in that, The buffer device includes at least one cylinder (3), a magnetic switch (4), a first solenoid valve (5), and a throttle valve (6); The cylinder (3) is connected to the cover (1) and the box (2). During the process of the at least one cylinder (3) gradually shortening, the at least one cylinder (3) drives the cover (1) to gradually close relative to the box (2). The magnetic switch (4) is connected to the cylinder of any cylinder (3). The magnetic switch (4) is electrically connected to the first solenoid valve (5). During the process of the at least one cylinder (3) gradually shortening, and when the cover (1) closes to the target position relative to the box (2), the magnetic ring installed on the piston of any cylinder (3) triggers the magnetic switch (4) to transmit a switching signal to the first solenoid valve (5). The target position is any position where the cover (1) is not completely closed during the process of the cover (1) gradually closing relative to the box (2). During the process of the at least one cylinder (3) gradually shortening, before the first solenoid valve (5) receives the switching signal, the first solenoid valve (5) is directly connected between the rodless chamber of each cylinder and the atmospheric pressure space outside the cylinder. After the first solenoid valve (5) receives the switching signal, the first solenoid valve (5) is directly connected between the rodless chamber of each cylinder and the air inlet of the throttle valve (6). The outlet of the throttle valve (6) is connected to the atmospheric pressure space.

2. The cushioning device of claim 1, wherein, The first solenoid valve (5) is a two-position five-way solenoid valve; inside the first solenoid valve (5), when the first solenoid valve (5) is not energized, the target working port of the first solenoid valve (5) is connected to the air inlet of the first solenoid valve (5), and when the first solenoid valve (5) is energized, the target working port of the first solenoid valve (5) is connected to the target exhaust port of the first solenoid valve (5); outside the first solenoid valve (5), the target working port of the first solenoid valve (5) is connected to the rodless chamber of each cylinder as the at least one cylinder (3) gradually shortens, the air inlet of the first solenoid valve (5) is connected to the atmospheric pressure space, and the target exhaust port is connected to the air inlet of the throttle valve (6); Before the first solenoid valve (5) receives the switching signal, the first solenoid valve (5) is not energized. After the first solenoid valve (5) receives the switching signal, the first solenoid valve (5) is energized.

3. The cushioning device of claim 2, wherein, During the gradual extension of at least one cylinder (3), the at least one cylinder (3) drives the cover (1) to gradually open relative to the box (2), and the target working port of the first solenoid valve (5) is not connected to the rodless chamber of each cylinder during the gradual extension of at least one cylinder (3).

4. The buffer device according to claim 3, characterized in that, The buffer device also includes a second solenoid valve (7); The second solenoid valve (7) is a three-position five-way solenoid valve; inside the second solenoid valve (7), when the second solenoid valve (7) is energized and in the first working state, the first working port of the second solenoid valve (7) is connected to the first exhaust port of the second solenoid valve (7), and the second working port of the second solenoid valve (7) is connected to the air inlet of the second solenoid valve (7); when the second solenoid valve (7) is energized and in the second working state, the first working port of the second solenoid valve (7) is connected to the air inlet of the second solenoid valve (7), and the second working port of the second solenoid valve (7) is connected to the second exhaust port of the second solenoid valve (7); outside the second solenoid valve (7), the first working port of the second solenoid valve (7) is connected to the rod chamber of each cylinder, the second working port of the second solenoid valve (7) is connected to the rodless chamber of each cylinder, the second exhaust port of the second solenoid valve (7) is connected to the target working port of the first solenoid valve (5), and the air inlet of the second solenoid valve (7) is connected to an air source (71); During the process of the at least one cylinder (3) gradually extending, the second solenoid valve (7) is energized and in the first working state; during the process of the at least one cylinder (3) gradually shortening, the second solenoid valve (7) is energized and in the second working state.

5. The buffer device according to claim 4, characterized in that, When the second solenoid valve (7) is not energized, inside the second solenoid valve (7), any two of the following ports are not connected: the air inlet, the first working port, the second working port, the first exhaust port, and the second exhaust port.

6. The cushioning device of claim 1, wherein, The distance between the magnetic switch (4) and the first end of the cylinder of any cylinder (3) is greater than the distance between the magnetic switch (4) and the second end of the cylinder of any cylinder (3), wherein the first end of the cylinder is the end of the cylinder from which the piston rod extends, and the second end of the cylinder is the end of the cylinder from which the piston rod does not extend.

7. The cushioning device of claim 1, wherein, One end of the cover (1) is hinged to the box (2); The cylinder barrel of the cylinder (3) is rotatably connected to the outer wall of the box (2) about a first axis parallel to the hinge axis, wherein the hinge axis is the axis of hinge between the cover (1) and the box (2); The piston rod of the cylinder (3) is rotatably connected to the outer wall of the cover (1) about a second axis parallel to the hinge axis, wherein any two of the first axis, the second axis and the hinge axis do not coincide.

8. The cushioning device of claim 1, wherein, One end of the cover (1) is hinged to the box (2); The cylinder (3) is rotatably connected to the outer wall of the cover (1) about a third axis parallel to the hinge axis, wherein the hinge axis is the axis on which the cover (1) and the box (2) are hinged. The piston rod of the cylinder (3) is rotatably connected to the outer wall of the housing (2) about a fourth axis parallel to the hinge axis, wherein any two of the third axis, the fourth axis and the hinge axis do not coincide.

9. The cushioning device of claim 7 or 8, wherein, The number of cylinders (3) is set to two, and the two cylinders (3) are distributed on both sides of the device in a direction parallel to the hinge axis.

10. The cushioning device of claim 1, wherein, The magnetic switch (4) is detachably connected to the cylinder barrel of any of the cylinders (3).

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