A sealing cover plate device for a fully automatic switch

Abstract

The present invention discloses a sealing cover plate device for a full-automatic switch, which includes a cover body, and also includes a base and a sealing mechanism arranged on the cover body. The base is installed on the side plate of a sample tube container containing a sample tube. The cover body is rotatably connected to the upper side of the base through a flipping driving mechanism. The sealing mechanism is used to cover the opening end face of the sample tube. The sealing mechanism includes a first linear motor arranged on the upper side of the cover body and a sealing plate arranged on the lower side of the cover body. The telescopic end of the first linear motor extends out of the lower end of the cover body and is fixedly connected to the upper surface of the sealing plate. A sealing piece that can be coupled with the opening end of the sample tube is arranged at the lower end of the sealing plate, replacing the manual upper cover sealing in the prior art and reducing the problem of poor sealing effect of the device caused by manual intervention.

Description

Technical Field

[0001] The present invention belongs to the technical field of experimental instruments, and particularly relates to a sealing cover plate device with a fully automatic switch. Background Art

[0002] In the use of analytical instruments such as centrifuges and vacuum parallel concentrators, a detachable sealing structure is usually provided to seal the container for loading samples, that is, the sample tube. For example, in Chinese Patent CN216478873U, a movable gland sealing structure includes a housing and a cover body. A pin column is provided on the back side wall of the housing, and the length direction of the pin column is the same as the height direction of the housing. A pin is provided inside the pin column, and a support is provided at one end of the pin away from the pin column. A hinge is provided on the support, and one end of the hinge away from the support is connected to the cover body. The cover body is connected to the two mutually parallel side walls of the housing through a buckle assembly. Each buckle assembly includes a base provided on the side wall of the housing and a fixing part provided on the side wall of the cover body, and a movable block is provided on the base. A snap ring is provided on the movable block, and both ends of the snap ring are respectively provided on both sides of the movable block. A pull rod is provided on the fixing part, and the pull rod cooperates with the snap ring. In this technical solution, the cover body is manually pressed above the sample tube, the buckle assembly and the cover body are connected to each other, and the buckle fastens the cover body, so as to realize the clearance seal between the cover body and the sample tube. After the buckle assembly is disengaged from the cover body, the cover body is lifted manually to complete the sample loading and sampling operations. However, the buckle assembly for sealing cannot be adjusted, and manual operation makes it difficult to couple the cover body and the sample tube. When sealing, after the cover body is manually covered on the opening end of the sample tube, the cover body is likely to be uneven on the opening end face of the sample tube, which will affect the sealing effect. Summary of the Invention

[0003] The present invention provides a sealing cover plate device with a fully automatic switch, aiming to solve the problem of poor sealing effect of the cover plate sealing structure applied to laboratory analytical instruments.

[0004] To solve the above technical problems, the present invention provides the following technical solutions:

[0005] A sealing cover plate device with a fully automatic switch includes a cover body, and also includes a base and a sealing mechanism provided on the cover body. The base is installed on the side plate of a sample tube container containing a sample tube, and the cover body is rotatably connected to the upper side of the base through a flipping drive mechanism;

[0006] The sealing mechanism is used to cover the opening end face of the sample tube. The sealing mechanism includes a first linear motor provided on the upper side of the cover body and a sealing plate provided on the lower side of the cover body. The telescopic end of the first linear motor extends out of the lower end of the cover body and is fixedly connected to the upper surface of the sealing plate. A sealing piece that can be coupled with the opening end of the sample tube is provided at the lower end of the sealing plate.

[0007] Preferably, the sealing mechanism further includes a bushing disposed on the cover body and penetrating through the upper and lower sides of the cover body. A guide rod is disposed on the sealing plate, passing through the cover body and slidably connected within the bushing. There are several groups of combinations of the bushing and the guide rod.

[0008] Preferably, a first optocoupler base is disposed on the bushing, and a first optocoupler is disposed on the first optocoupler base. The first optocoupler is electrically connected to the first linear motor. A first induction piece that can contact the first optocoupler is fixedly disposed on the guide rod slidably connected to the bushing. The first optocoupler is disposed on the movement path of the first induction piece. The contact between the first optocoupler and the first induction piece controls the disconnection of the first linear motor, and the disconnection between the first optocoupler and the first induction piece controls the start of the first linear motor.

[0009] Preferably, the flipping drive mechanism includes a second linear motor disposed on the base, and a rack is disposed at the upper end of the telescopic end of the second linear motor;

[0010] A rotating shaft is fixedly disposed on one side of the cover body facing the base. Two bearing seats are disposed on one side of the base facing the cover body. The two ends in the length direction of the rotating shaft respectively penetrate into the two bearing seats and are rotatably connected within the corresponding bearing seats. A gear meshing with the rack is fixedly disposed on one side of the rotating shaft protruding out of the bearing seat.

[0011] Preferably, two second optocoupler bases are disposed in the vertical direction on one side of the base close to the telescopic end of the second linear motor. Second optocouplers are disposed on both of the two second optocoupler bases. A second induction piece that can contact the two second optocouplers is fixedly disposed on the telescopic end of the second linear motor. Both of the two second optocouplers are disposed on the movement path of the second induction piece. The contact between the second optocoupler and the second induction piece controls the disconnection of the second linear motor, and the disconnection between the second optocoupler and the second induction piece controls the start of the second linear motor.

[0012] Preferably, a buffer block is disposed on the base of the second linear motor, a buffer seat is disposed on the upper side of the base, and a buffer is disposed on the buffer seat.

[0013] Preferably, it further includes a fastening mechanism. The fastening mechanism includes a pivoting block in a "Z" shape and a pivoting drive mechanism. The top end of the pivoting block is a large head end, and the lower end is used to connect the pivoting drive mechanism. A support piece protruding horizontally from the cover body is fixedly disposed on one side of the cover body away from the base. When the sealing mechanism seals the sample tube, the large head end of the pivoting block presses the support piece, and the sealing plate is parallel to the opening end face of the sample tube. When the large head end of the pivoting block releases the support piece, the sealing piece can be separated from the sample tube.

[0014] Preferably, it further includes a support bar installed on the sample tube container. When the sealing mechanism seals the sample tube, the upper end of the support bar abuts against the lower surface of the support piece.

[0015] Preferably, the pivoting drive mechanism includes a fixed seat fixedly arranged on the side plate of the sample tube container. A protruding connecting ear seat is fixedly arranged on the fixed seat. A push-pull electromagnet is rotatably connected inside the connecting ear seat. The top end of the pull rod of the push-pull electromagnet is fixedly provided with a rod joint. One side of the lower end of the pivoting block is rotatably connected inside the rod joint, and the other side is rotatably connected to the upper side of the fixed seat. When the large head end of the pivoting block presses the support piece, the push-pull electromagnet and the pivoting block are magnetically repulsive. When the large head end of the pivoting block releases the support piece, the push-pull electromagnet and the pivoting block are magnetically attractive.

[0016] Compared with the prior art, the present invention has the following technical effects:

[0017] 1. The fully automatic switch sealing cover plate device provided by the present invention uses the power provided by the flipping drive mechanism to flip the cover body to the opening end face of the sample tube, and drives the sealing piece installed on the sealing plate to seal the opening end of the sample tube downward through the first linear motor, replacing the manual capping and sealing in the prior art, and reducing the problem of poor sealing effect caused by manual intervention.

[0018] 2. The fully automatic switch sealing cover plate device provided by the present invention combines the guide rod arranged on the sealing plate and the bushing on the cover body to limit the sealing plate in the direction of its own wide surface, so that the sealing plate is not easily displaced during the flipping process with the cover body.

[0019] 3. The fully automatic switch sealing cover plate device provided by the present invention is provided with a first induction piece on one of the guide rods, and a first optocoupler seat with a first optocoupler installed is arranged on the bushing slidably connected to this guide rod. After the first optocoupler contacts the first induction piece, the power supply circuit of the first linear motor can be cut off, which is used to control the in-place detection when the telescopic end of the first linear motor is connected to the sealing plate and presses down.

[0020] 4. The fully automatic switch sealing cover plate device provided by the present invention drives the rack to move linearly through the telescopic end of the second linear motor, thereby driving the gear to move, and then driving the rotating shaft connected to the gear and connected to the cover body to rotate, so that the cover body can be flipped without manual effort.

[0021] 5. The fully automatic switch sealing cover plate device provided by the present invention is provided with two second optocouplers. After the two second optocouplers contact the second induction piece, the power supply circuit of the second linear motor can be cut off, which is used to control the flipping in-place detection of the flipping drive mechanism.

[0022] 6. The sealing cover plate device of a full-automatic switch provided by the present invention uses a buffer block arranged on the second linear motor base and a buffer arranged on the base to buffer the cover body and the sealing mechanism when they are turned down in place.

[0023] 7. The sealing cover plate device of a full-automatic switch provided by the present invention uses a fastening mechanism to press down from the side of the cover body away from the base, avoiding poor sealing caused by the incomplete flipping of the cover body and the sealing mechanism.

[0024] 8. The sealing cover plate device of a full-automatic switch provided by the present invention uses a support bar to prevent excessive force when the large head end of the pivot block presses down on the support piece, which may lift one side of the entire cover body and the sealing mechanism, affecting the sealing effect.

[0025] 9. The push-pull electromagnet of the sealing cover plate device of a full-automatic switch provided by the present invention can change its magnetism. After the cover body is flipped down in place from top to bottom and the support piece is placed on the upper end of the support bar, the push-pull electromagnet repels the pivot block magnetically, causing the large head end of the pivot block to rotate towards the support piece and press on the support piece. Then, the push-pull electromagnet is changed to attract the pivot block magnetically, causing the large head end of the pivot block to rotate away from the support piece, thereby leaving the support piece, and realizing the automatic control of the fastening mechanism to complete the action. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall schematic diagram of the sealing cover plate device of a full-automatic switch described in the present invention;

[0027] Figure 2 is the connection schematic diagram of the base and the cover plate described in the present invention;

[0028] Figure 3 is Figure 2 the left view of

[0029] Figure 4 is Figure 2 the top view of

[0030] Reference numerals: 1, cover body; 11, support piece; 2, base; 3, sample tube; 4, flipping drive mechanism; 41, second linear motor; 42, rack; 43, gear; 44, bearing seat; 45, rotating shaft; 46, second opto-coupler seat; 47, second opto-coupler; 48, second induction piece; 5, sealing mechanism; 51, first linear motor; 52, sealing plate; 53, sealing piece; 54, bushing; 55, guide rod; 56, first opto-coupler seat; 57, first opto-coupler; 58, first induction piece; 6, buffer block; 61, buffer seat; 62, buffer; 7, fastening mechanism; 71, support bar; 72, fixed seat; 73, connecting ear seat; 74, push-pull electromagnet; 75, rod joint; 76, pivot block; 77, pivot drive mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To make the objectives, technical solutions and advantages of the present invention clearer, the following will describe the technical solutions of the present invention clearly and completely in conjunction with specific embodiments of the present application and with reference to the appended Figures 1-4 .

[0032] Taking the "upper" and "lower" directions shown Figure 1 as an example, a sealing cover device for a full-automatic switch includes a cover body 1, and also includes a base 2 and a sealing mechanism 5 provided on the cover body 1. The base 2 is installed on the side plate of a sample tube container containing a sample tube 3, and the cover body 1 is rotatably connected to the upper side of the base 2 through a flipping drive mechanism 4; the sealing mechanism 5 is used to cover the opening end face of the sample tube 3. The sealing mechanism 5 includes a first linear motor 51 provided on the upper side of the cover body 1 and a sealing plate 52 provided on the lower side of the cover body 1. The telescopic end of the first linear motor 51 extends out of the lower end of the cover body 1 and is fixedly connected to the upper surface of the sealing plate 52. A sealing piece 53 that can be coupled with the opening end of the sample tube 3 is provided at the lower end of the sealing plate 52. The power provided by the flipping drive mechanism 4 is used to flip the cover body 1 to the opening end face of the sample tube 3, and the sealing piece 53 installed on the sealing plate 52 is driven by the first linear motor 51 to seal the opening end of the sample tube 3 downward, replacing the manual capping and sealing in the prior art and reducing the problem of poor sealing effect of the device caused by manual intervention.

[0033] The sealing mechanism 5 further includes a bushing 54 provided on the cover body 1 and penetrating through the upper and lower sides of the cover body 1. A guide rod 55 that passes through the cover body 1 and is slidably connected to the bushing 54 is provided on the sealing plate 52, and several groups of combinations of the bushing 54 and the guide rod 55 are provided. The combination of the guide rod 55 provided on the sealing plate 52 and the bushing 54 on the cover body 1 plays a limiting role in the width direction of the sealing plate 52 itself, so that the sealing plate 52 is not easily displaced during the flipping process of the cover body 1.

[0034] A first opto-coupler seat 56 is provided on the bushing 54, a first opto-coupler 57 is provided on the first opto-coupler seat 56, the first opto-coupler 57 is electrically connected to the first linear motor 51, and a first induction piece 58 that can contact the first opto-coupler 57 is fixedly provided on the guide rod 55 that is slidably connected to the bushing 54. The first opto-coupler 57 is arranged on the movement path of the first induction piece 58. The contact between the first opto-coupler 57 and the first induction piece 58 controls the disconnection of the first linear motor 51, and the disconnection between the first opto-coupler 57 and the first induction piece 58 controls the start of the first linear motor 51. After the first opto-coupler 57 and the first induction piece 58 are in contact, the power circuit of the first linear motor 51 can be cut off, which is used to control the in-place detection when the telescopic end of the first linear motor 51 is connected to the sealing plate and presses down.

[0035] The flipping drive mechanism 4 includes a second linear motor 41 disposed on the base 2, and a rack 42 is provided at the upper end of the telescopic end of the second linear motor 41; on the side of the cover 1 facing the base 2, a rotating shaft 45 is fixedly provided, and on the side of the base 2 facing the cover 1, two bearing seats 44 are provided. The two ends in the length direction of the rotating shaft 45 respectively penetrate into the two bearing seats 44 and are rotatably connected in the corresponding bearing seats 44. On the side of the rotating shaft 45 protruding out of the bearing seat 44, a gear 43 meshing with the rack 42 is fixedly provided. The telescopic end of the second linear motor 41 drives the rack 42 to perform a linear motion, thereby driving the gear 43 to move, and then driving the rotating shaft 45 connected to the gear 43 and connected to the cover 1 to rotate, so that the cover can be flipped without manual effort.

[0036] On the side of the base 2 close to the telescopic end of the second linear motor 41, two second opto-coupler seats 46 are provided in the vertical direction. Second opto-couplers 47 are provided on both of the two second opto-coupler seats 46. A second induction piece 48 that can contact the two second opto-couplers 47 is fixedly provided on the telescopic end of the second linear motor 41. Both of the two second opto-couplers 47 are arranged on the movement path of the second induction piece 48. The contact between the second opto-coupler and the second induction piece controls the disconnection of the second linear motor, and the disconnection between the second opto-coupler and the second induction piece controls the start of the second linear motor. After the two second opto-couplers 47 and the second induction piece 48 come into contact, the power circuit of the second linear motor 41 can be cut off, which is used to detect the in-place flipping of the flipping drive mechanism 4.

[0037] A buffer block 6 is provided on the machine base of the second linear motor 41, and a buffer seat 61 is provided on the upper side of the base 2. A buffer 62 is provided on the buffer seat 61, which is used for buffering when the cover 1 and the sealing mechanism 5 are flipped down in place.

[0038] A sealing cover device of a full-automatic switch provided by the present invention further includes a fastening mechanism 7. The fastening mechanism 7 includes a pivoting block 76 in a "Z" shape and a pivoting drive mechanism 77. The top end of the pivoting block 76 is a large head end, and the lower end is used to connect the pivoting drive mechanism 77. A support piece 11 extending horizontally out of the cover 1 is fixedly provided on the side of the cover 1 away from the base 2. When the sealing mechanism 5 seals the sample tube 3, the large head end of the pivoting block 76 presses on the support piece 11, and the sealing plate 52 is parallel to the opening end face of the sample tube 3. When the large head end of the pivoting block 76 releases the support piece 11, the sealing piece 53 can be separated from the sample tube 3. The fastening mechanism 7 presses down from the side of the cover 1 away from the base 2 to prevent the cover 1 and the sealing mechanism 5 from not flipping in place, resulting in poor sealing effect.

[0039] The sealing cover plate device of a fully automatic switch further includes a support bar 71 installed on the sample tube container. When the sealing mechanism 5 seals the sample tube 3, the upper end of the support bar 71 abuts against the lower surface of the support piece 11, preventing the large head end of the pivot block 76 from pressing down on the support piece 11 with too much force and lifting the entire cover body 1 and one side of the sealing mechanism 5, which may affect the sealing effect.

[0040] The pivot drive mechanism 77 includes a fixed seat 72 fixedly arranged on the side plate of the sample tube container. A protruding connecting ear seat 73 is fixedly arranged on the fixed seat 72. A push-pull electromagnet 74 is rotatably connected within the connecting ear seat 73. The top end of the pull rod of the push-pull electromagnet 74 is fixedly provided with a rod joint 75. One side of the lower end of the pivot block 76 is rotatably connected within the rod joint 75, and the other side is rotatably connected to the upper side of the fixed seat 72. When the large head end of the pivot block 76 presses against the support piece 11, the push-pull electromagnet 74 and the pivot block 76 are magnetically repulsive. When the large head end of the pivot block 76 releases the support piece 11, the push-pull electromagnet 74 and the pivot block 76 are magnetically attractive. The push-pull electromagnet 74 can change its magnetism. After the cover body 1 is flipped downwards in place, that is, when the support piece 11 is placed on the upper end of the support bar 71, the push-pull electromagnet 74 and the pivot block 76 are magnetically repulsive, prompting the large head end of the pivot block 76 to rotate towards the support piece 11 and press on the support piece 11. By changing the push-pull electromagnet 74 to make it magnetically attractive to the pivot block 76, the large head end of the pivot block 76 is prompted to rotate away from the support piece 11, thus leaving the support piece 11 and realizing the automatic control of the fastening mechanism 7 to complete the action.

[0041] The implementation principle of the present invention is as follows: The upper end of the telescopic rod of the second linear motor 41 is connected to a rack 42, which is in driving cooperation with a gear 43. The gear 43 is mounted on a rotating shaft 45 of the connecting cover body 1, and the rotating shaft 45 is assembled on a bearing seat 44. When the second linear motor 41 drives linearly, the rack 42 pushes the gear 43 to drive the rotating shaft 45 to rotate on the bearing seat 44. The rotating shaft 45 drives the cover body 1 and the sealing mechanism 5 to complete the flipping action, thereby realizing the automatic opening and closing of the cover body 1 and the sealing mechanism 5. After the cover body 1 and the sealing mechanism 5 are flipped down in place, when the support piece 11 connected to the cover body 1 presses down on the support bar 71 on the sample tube container, it plays a supporting role. The first linear motor 51 is fixed on the cover body 1. The telescopic end of the first linear motor 51 is connected to a sealing plate 52. A sealing piece 53 is installed below the sealing plate 52, and a guide rod 55 slidably connected to a bushing 54 on the flipping plate is installed above. There are four sets of the guide rod 55 and the bushing 54, which are respectively arranged at the four end corners of the cover body 1. One set of the guide rod 55 is provided with a first induction piece 58, and a first opto-coupler seat 56 and a first opto-coupler 57 are provided on the bushing 54 slidably connected to this set of the guide rod 55, which are used to control the in-place detection when the telescopic end of the first linear motor 51 drives the sealing plate 52 to press down. After the sealing plate 52 completes the action, the push-pull electromagnet 74 drives the pivot block 76 to fasten the support piece 11 through the connected rod joint 75, thereby fastening the entire cover body 1 and the sealing mechanism 5, avoiding that when the sealing plate 52 presses down on the sample tube 3 for sealing, the entire cover body 1 and the sealing mechanism 5 are lifted, affecting the sealing effect. The connecting ear seat 73 is fixed on the fixed seat 72, the push-pull electromagnet 74 is rotatably connected to the connecting ear seat 73, and two parts of the pivot block 76 are respectively rotatably connected to the rod joint 75 and the fixed seat 72, so as to realize that the push-pull electromagnet 74 drives the pivot block 76 to rotate and fasten the support piece 11, thereby fastening the cover body 1.

[0042] The present invention can be matched with automated projects to achieve the purpose of a smart laboratory.

[0043] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A sealing cover plate device for a full-automatic switch, comprising a cover body (1), characterized in that, A base (2), a sealing mechanism (5) provided on a cover body (1), and a fastening mechanism (7). The base (2) is installed on a side plate of a sample tube container that houses a sample tube (3). The cover body (1) is rotatably connected to the upper side of the base (2) through a flipping drive mechanism (4). The sealing mechanism (5) is used to cover the opening end face of the sample tube (3). The sealing mechanism (5) includes a first linear motor (51) provided on the upper side of the cover body (1) and a sealing plate (52) provided on the lower side of the cover body (1). The telescopic end of the first linear motor (51) extends out of the lower end of the cover body (1) and is fixedly connected to the upper surface of the sealing plate (52). A sealing piece (53) that can be coupled with the opening end of the sample tube (3) is provided at the lower end of the sealing plate (52). The flipping drive mechanism (4) includes a second linear motor (41) provided on the base (2). A rack (42) is provided at the upper end of the telescopic end of the second linear motor (41). A rotating shaft (45) is fixedly provided on the side of the cover body (1) facing the base (2). Two bearing seats (44) are provided on the side of the base (2) facing the cover body (1). The two ends in the length direction of the rotating shaft (45) respectively penetrate into the two bearing seats (44) and are rotatably connected inside the corresponding bearing seats (44). A gear (43) that meshes with the rack (42) is fixedly provided on the side of the rotating shaft (45) that penetrates out of the bearing seat (44). Two second opto-coupler seats (46) are provided in the vertical direction on the side of the base (2) close to the telescopic end of the second linear motor (41). A second opto-coupler (47) is provided on each of the two second opto-coupler seats (46). A second induction piece (48) that can contact the two second opto-couplers (47) is fixedly provided on the telescopic end of the second linear motor (41). The two second opto-couplers (47) are both arranged on the movement path of the second induction piece (48). The contact between the second opto-coupler (47) and the second induction piece (48) controls the disconnection of the second linear motor (41), and the disconnection between the second opto-coupler (47) and the second induction piece (48) controls the start of the second linear motor (41). A buffer block (6) is provided on the machine base of the second linear motor (41). A buffer seat (61) is provided on the upper side of the base (2), and a buffer (62) is provided on the buffer seat (61). The fastening mechanism (7) includes a pivot block (76) in a "Z" shape and a pivot drive mechanism (77). The top end of the pivot block (76) is a large head end, and the lower end is used to connect the pivot drive mechanism (77). A support piece (11) that extends horizontally out of the cover body (1) is fixedly provided on the side of the cover body (1) away from the base (2). When the sealing mechanism (5) seals the sample tube (3), the large head end of the pivot block (76) presses on the support piece (11), and the sealing plate (52) is parallel to the opening end face of the sample tube (3). When the large head end of the pivot block (76) releases the support piece (11), the sealing piece (53) can be separated from the sample tube (3). The sealing cover plate device is provided with a support bar (71) mounted on the sample tube container. When the sealing mechanism (5) seals the sample tube (3), the upper end of the support bar (71) abuts against the lower surface of the support piece (11). The pivoting drive mechanism (77) includes a fixed seat (72) fixedly arranged on the side plate of the sample tube container. A protruding connecting ear seat (73) is fixedly arranged on the fixed seat (72). A push-pull electromagnet (74) is rotatably connected in the connecting ear seat (73). The top end of the pull rod of the push-pull electromagnet (74) is fixedly provided with a rod joint (75). One side of the lower end of the pivoting block (76) is rotatably connected in the rod joint (75), and the other side is rotatably connected to the upper side of the fixed seat (72). When the large head end of the pivoting block (76) presses against the support piece (11), the push-pull electromagnet (74) and the pivoting block (76) are magnetically repulsive. When the large head end of the pivoting block (76) releases the support piece (11), the push-pull electromagnet (74) and the pivoting block (76) are magnetically attractive.

2. The sealing cover plate device of a fully automatic switch according to claim 1, characterized in that, The sealing mechanism (5) includes a bushing (54) arranged on the cover body (1) and penetrating through the upper and lower sides of the cover body (1). A guide rod (55) is arranged on the sealing plate (52), passes through the cover body (1) and is slidably connected in the bushing (54). A plurality of groups of combinations of the bushing (54) and the guide rod (55) are provided.

3. The sealing cover plate device of a full-automatic switch according to claim 2, characterized in that, A first opto-coupler seat (56) is arranged on the bushing (54). A first opto-coupler (57) is arranged on the first opto-coupler seat (56). The first opto-coupler (57) is electrically connected to the first linear motor (51). A first induction piece (58) that can contact the first opto-coupler (57) is fixedly arranged on the guide rod (55) slidably connected to the bushing (54). The first opto-coupler (57) is arranged on the movement path of the first induction piece (58). The contact between the first opto-coupler (57) and the first induction piece (58) controls the disconnection of the first linear motor (51), and the disconnection between the first opto-coupler (57) and the first induction piece (58) controls the start of the first linear motor (51).

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