Automatic door opening and closing device for sterilizer

Abstract

The present invention discloses an automatic door opening and closing device for a sterilization cabinet. A fixed support is fixedly arranged on the left side wall of a traditional sterilization cabinet. A C-shaped card fixing plate is fixedly arranged on the front surface of a door hinge plate. The left end of a horizontally and transversely arranged cylinder body is hingedly connected to the fixed support. The right section cylinder body of the cylinder is supported on the C-shaped card fixing plate through a first C-shaped card, and the extending rod of the cylinder points to the right. A door pulling support with a linear transmission shaft is fixedly arranged on the front surface of the door body beyond the right side of the door hinge plate and the right side of the C-shaped card fixing plate. The axis direction of the linear transmission shaft is parallel to the rising and falling direction of the door body. The rod end assembly is supported on the C-shaped card fixing plate through a second C-shaped card, and the left end of the rod end assembly is fixedly connected to the extending rod of the cylinder. The right end of the rod end assembly is movably sleeved on the linear transmission shaft through a linear bearing. The above structure is simple, convenient to operate, and can achieve the purpose of automatic door opening and closing.

Description

Technical Field

[0001] The present invention relates to a sterilization cabinet, and particularly to an automatic door opening and closing device for a sterilization cabinet. Background Art

[0002] The structure of a commonly used sterilization cabinet currently includes: a sterilization cabinet body with a sterilization chamber, a door frame structure is fixedly installed on the sterilization cabinet body at the entrance of the sterilization chamber, a door hinge plate is hinged to the left door frame of the sterilization cabinet, a door body is installed on the back surface of the door hinge plate through an up-and-down sliding structure, and a driving device for driving the door body to rise or fall relative to the door hinge plate through the up-and-down sliding structure is arranged between the door body and the door hinge plate; a left vertical clamping plate is fixedly arranged on the left door frame on the right side of the hinged part of the door hinge plate and the left door frame, the left vertical clamping plate is an L-shaped structure composed of a first vertical clamping plate fixedly connected to the left door frame and a second vertical clamping plate parallel to the left door frame, and a plurality of first grooves penetrating through from front to back are evenly spaced from top to bottom on the right end surface of the second vertical clamping plate. A right vertical clamping plate is fixedly arranged on the right door frame of the sterilization cabinet, the right vertical clamping plate is an L-shaped structure composed of a third vertical clamping plate fixedly connected to the right door frame and a fourth vertical clamping plate parallel to the right door frame, and a plurality of second grooves penetrating through from front to back are evenly spaced from top to bottom on the left end surface of the fourth vertical clamping plate. A left part vertical clamping plate is fixedly arranged on the left side wall of the door body, a plurality of outwardly protruding first bumps corresponding to and matching with the first grooves one by one are spaced from top to bottom on the left end surface of the left part vertical clamping plate, a right part vertical clamping plate is fixedly arranged on the right side wall of the door body, and a plurality of outwardly protruding second bumps corresponding to and matching and clamping with the second grooves one by one are spaced from top to bottom on the right end surface of the right part vertical clamping plate.

[0003] When closing the door, an operator pushes the door body, so that the door body swings around the hinge axis of the door hinge plate and the left door frame of the sterilization cabinet until the back surface of the door body fits against the door frame structure. At this time, each first bump passes through the corresponding first groove and enters the clamping groove surrounded by the left door frame, the first vertical clamping plate and the second vertical clamping plate, and each second bump passes through the corresponding second groove and enters the clamping groove surrounded by the right door frame, the third vertical clamping plate and the fourth vertical clamping plate. On the basis of the operator supporting the door body, the driving device is started, and the door body is driven to descend through the driving device. At this time, the upper and lower positions of each first bump and the corresponding first groove are staggered, and the upper and lower positions of each second bump and the corresponding second groove are staggered, so as to lock the door body in the closed state.

[0004] Before opening the door, it is also necessary to start the driving device on the basis of the operator supporting the door body 1, drive the door body to rise through the driving device to the position where the upper and lower positions of each first bump and the corresponding first groove are aligned and the upper and lower positions of each second bump and the corresponding second groove are aligned. At this time, the door body is unlocked, and then the operator pulls the door body outwards.

[0005] The opening and closing of the door body rely on manual operation. Moreover, during the ascending or descending process of the door body, a supporting force towards the inside needs to be applied manually to ensure that the door body will not be stuck and unable to ascend or descend, which is time-consuming and laborious. In addition, this type of sterilization cabinet cannot be used in workplaces where people are not allowed to enter, and its use is limited. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an automatic door opening and closing device for a sterilization cabinet that has a simple structure, is convenient to operate, and can automatically open and close the door.

[0007] To solve the above problems, the technical solution adopted by the present invention is: The automatic door opening and closing device for the sterilization cabinet includes: a door body and a door hinge plate hinged to the left door frame of the sterilization cabinet. The door body is installed on the back surface of the door hinge plate through an up-and-down sliding structure. A driving device for driving the door body to ascend or descend relative to the door hinge plate through the up-and-down sliding structure is provided between the door body and the door hinge plate; on the left door frame to the right of the hinge joint between the door hinge plate and the left door frame, a left vertical clamping plate is fixedly provided. The left vertical clamping plate is an L-shaped structure composed of a first vertical clamping plate fixedly connected to the left door frame and a second vertical clamping plate parallel to the left door frame. On the right end surface of the second vertical clamping plate, a plurality of first grooves penetrating through from front to back are evenly spaced from top to bottom; on the right door frame of the sterilization cabinet, a right vertical clamping plate is fixedly provided. The right vertical clamping plate is an L-shaped structure composed of a third vertical clamping plate fixedly connected to the right door frame and a fourth vertical clamping plate parallel to the right door frame. On the left end surface of the fourth vertical clamping plate, a plurality of second grooves penetrating through from front to back are evenly spaced from top to bottom; on the left side wall of the door body, a left part vertical clamping plate is fixedly provided. On the left end surface of the left part vertical clamping plate, a plurality of outwardly protruding first protrusions are sequentially spaced from top to bottom and are respectively in one-to-one correspondence and matching with the first grooves. On the right side wall of the door body, a right part vertical clamping plate is fixedly provided. On the right end surface of the right part vertical clamping plate, a plurality of outwardly protruding second protrusions are sequentially spaced from top to bottom and are respectively in one-to-one correspondence and clamping engagement with the second grooves. On the left side wall of the sterilization cabinet, a fixed support is fixedly provided. On the front surface of the door hinge plate, a C-shaped clamping plate fixing plate is fixedly provided. The left end of the horizontally placed cylinder body is hinged to the fixed support. The right section of the cylinder body is supported by a first C-shaped clamp on the C-shaped clamping plate fixing plate, and the extending rod of the cylinder points to the right; on the front surface of the door body beyond the right side of the door hinge plate and the right side of the C-shaped clamping plate fixing plate, a door pulling support with a linear transmission shaft is fixedly provided. The axis direction of the linear transmission shaft is parallel to the ascending and descending directions of the door body. The rod end assembly is supported by a second C-shaped clamp on the C-shaped clamping plate fixing plate, and the left end of the rod end assembly is fixedly connected to the extending rod of the cylinder. The right end of the rod end assembly is movably sleeved on the linear transmission shaft through a linear bearing.

[0008] Further, for the automatic door opening and closing device of the sterilization cabinet described above, the structure of the driving device is as follows: A door motor is fixedly installed on the front surface of the door body. A driving sprocket is installed on the motor shaft of the door motor. The driven sprocket shaft is supported on the front surface of the door body below the driving sprocket through a mounting seat. A chain is wound around the driving sprocket and the driven sprocket. A horizontally arranged screw rod is fixedly connected to the left end of the driven sprocket shaft. The end of the first rod of the L-shaped lever composed of the first rod and the second rod is hinged to the door hinge plate. The connecting end of the first rod and the second rod is hinged to the front surface of the door body. The left end of the nut sleeve with an internal thread section is hinged to the end of the second rod. The left end of the screw rod is screwed into the right end of the nut sleeve to form a screw drive with the internal thread section.

[0009] Further, for the automatic door opening and closing device of the sterilization cabinet described above, on the front surface of the door body, a door body frame and an outer door body encapsulated on the front surface of the door body frame are sequentially arranged. The motor shaft of the door motor extends out of the right side of the driving sprocket and is fixedly connected to the left end of a horizontally arranged manual operating rod. The right end of the manual operating rod passes through the through hole on the door body frame and extends outside the right side of the door body frame. During actual use, the right end of the manual operating rod extending outside the right side of the door body frame can be set into a prismatic structure, and the prismatic structure can be better grasped compared to the cylindrical structure.

[0010] Further, for the automatic door opening and closing device of the sterilization cabinet described above, the up and down sliding structure is as follows: An upper support with a first linear transmission shaft is fixedly arranged on the upper section of the front surface of the door body. A lower support with a second linear transmission shaft is fixedly arranged on the lower section of the front surface of the door body. The axial directions of the first linear transmission shaft and the second linear transmission shaft are both parallel to the rising and falling directions of the door body. A first linear bearing movably sleeved on the first linear transmission shaft and a second linear bearing movably sleeved on the second linear transmission shaft are fixedly installed on the back surface of the door hinge plate.

[0011] Further, for the automatic door opening and closing device of the sterilization cabinet described above, at least one guiding structure is arranged between the door body and the door hinge plate. The guiding structure is an L-shaped guiding block or a C-shaped guiding block fixedly arranged on the front surface of the door body. The right end of the door hinge plate extends into the guiding groove formed between the L-shaped guiding block and the door body, or the right end of the door hinge plate extends into the guiding groove of the C-shaped guiding block. During the process of the door body rising or falling relative to the door hinge plate, the right side of the door hinge plate is restricted by the guiding groove, so as to ensure that the door body can rise or fall smoothly without deflection during the rising or falling process.

[0012] Further, for the above-mentioned automatic door opening and closing device of the sterilization cabinet, a first limit switch and a second limit switch are fixedly installed on the right side of the door hinge plate, and the first limit switch is located above the second limit switch; a first stopper is provided on the door body directly above the contact point of the first limit switch. When the contact point of the first limit switch touches the first stopper, the upper and lower positions of each first convex block and the corresponding first groove are aligned, and the upper and lower positions of each second convex block and the corresponding second groove are aligned; a second stopper is provided on the door body directly below the contact point of the second limit switch. When the contact point of the second limit switch touches the second stopper, the upper and lower positions of each first convex block and the corresponding first groove are staggered, and the upper and lower positions of each second convex block and the corresponding second groove are staggered.

[0013] Further, for the above-mentioned automatic door opening and closing device of the sterilization cabinet, a third limit switch is provided on the right edge of the door body, and a third stopper is provided on the right door frame at the height aligned with the contact point of the third limit switch. When the left vertical clamping plate is located in the card slot surrounded by the left door frame, the first vertical clamping plate and the second vertical clamping plate, and the right vertical clamping plate is located in the card slot surrounded by the right door frame, the third vertical clamping plate and the fourth vertical clamping plate, the contact point of the third limit switch touches the third stopper.

[0014] Further, for the above-mentioned automatic door opening and closing device of the sterilization cabinet, a third limit switch is provided on the right edge of the door body, and a third stopper is provided on the right door frame at the height aligned with the contact point of the third limit switch. When the left vertical clamping plate is located in the card slot surrounded by the left door frame, the first vertical clamping plate and the second vertical clamping plate, and the right vertical clamping plate is located in the card slot surrounded by the right door frame, the third vertical clamping plate and the fourth vertical clamping plate, the contact point of the third limit switch touches the third stopper.

[0015] Further, for the above-mentioned automatic door opening and closing device of the sterilization cabinet, the signal lines of the first limit switch, the second limit switch, and the third limit switch are all connected to the control system, and the start and stop of the driving device and the cylinder are controlled by the control system. The control system can control the start and stop of the driving device and the cylinder according to whether the first limit switch, the second limit switch, and the third limit switch are triggered, so as to achieve the purpose of intelligent fully automatic door opening and closing.

[0016] The beneficial effects of the present invention are: simple structure, convenient operation, capable of realizing functions of automatic door opening, automatic door closing, automatic door locking, and automatic door unlocking without relying on manual labor, can be used in general sterilization cabinet usage occasions, and can also be used in sterilization cabinet usage occasions where people are not allowed to enter. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram when the door body applied with the automatic door opening and closing device of the sterilization cabinet of the present invention is in the closed and unlocked state.

[0018] Figure 2 is Figure 1 The partial enlarged structural schematic diagram of part A in

[0019] Figure 3 is Figure 2 The partial enlarged sectional view in the C-C sectional direction in

[0020] Figure 4 The structural schematic diagram when the door body of the automatic door opening and closing device of the sterilization cabinet described in the present invention is in the closed and locked state.

[0021] Figure 5 is Figure 4 The partial enlarged structural schematic diagram of part B in

[0022] Figure 6 is Figure 1 The partial enlarged schematic diagram of the upper section.

[0023] Figure 7 is Figure 1 The partial structural schematic diagram in the top view direction.

[0024] Figure 8 is Figure 7 The partial enlarged structural schematic diagram of part D in

[0025] Figure 9 is Figure 7 The structural schematic diagram when the door body is in the open state. Detailed implementation manners

[0026] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0027] Embodiment 1

[0028] For the convenience of description, the "left", "right", "front", and "back" involved in this solution are defined as follows: Located Figure 1 The direction on the left hand side is defined as "left", located Figure 1 The direction on the right hand side is defined as "right", Figure 1 When the door body 1 is in the closed state, the face facing us is the "front", and the face opposite to the "front" is the "back", located Figure 1 The direction above is defined as "up", located Figure 1 The direction below is defined as "down", and all the orientation words involved in this solution are subject to this.

[0029] The structures of common sterilization cabinets currently include: a sterilization cabinet body 4 with a sterilization chamber, see Figure 1 , Figure 7 and Figure 9As shown in the figure, a door frame structure 40 is fixedly installed on the sterilizer cabinet body 4 at the inlet of the sterilization chamber. The door frame structure 40 is formed by enclosing a rectangular frame structure with a left door frame, a right door frame, a top door frame, and a bottom door frame. The door body 1 is installed on the back of the door hinge plate 2 through an up-and-down sliding structure. The left side of the door hinge plate 2 is hingedly connected to the left door frame of the sterilizer cabinet through a hinge structure, so that the door body 1 can swing outward to open the door or swing inward to close the door around the hinge structure. A driving device is provided between the door body 1 and the door hinge plate 2 to drive the door body 1 to rise or fall relative to the door hinge plate 2 through the up-and-down sliding structure.

[0030] As Figure 1 , Figure 4 , Figure 6 , Figure 7 , Figure 8 and Figure 9 shown, a left vertical clamping plate 43 is fixedly arranged on the left door frame on the right side of the hinged joint of the door hinge plate 2 and the left door frame. The left vertical clamping plate 43 is an L-shaped structure composed of a first vertical clamping plate 431 fixedly connected to the left door frame and a second vertical clamping plate 432 parallel to the left door frame. A plurality of first grooves 433 penetrating through from front to back are evenly spaced from top to bottom on the right end face of the second vertical clamping plate 432; for its structure, refer to Figure 8 the structure of the right vertical baffle 44 shown in the figure. The two are symmetric about the vertical center line of the door frame structure 40. A right vertical clamping plate 44 is fixedly arranged on the right door frame of the sterilizer cabinet. The right vertical clamping plate 44 is an L-shaped structure composed of a third vertical clamping plate 441 fixedly connected to the right door frame and a fourth vertical clamping plate 442 parallel to the right door frame. A plurality of second grooves 443 penetrating through from front to back are evenly spaced from top to bottom on the left end face of the fourth vertical clamping plate 442. A left part vertical clamping plate 11 is fixedly arranged on the left side wall of the door body 1. A plurality of first protrusions 111 protruding outward and corresponding to and matching with the first grooves 433 one by one are arranged at intervals from top to bottom on the left end face of the left part vertical clamping plate 11. A right part vertical clamping plate 12 is fixedly arranged on the right side wall of the door body 1. A plurality of second protrusions 121 protruding outward and corresponding to and engaging with the second grooves 443 one by one are arranged at intervals from top to bottom on the right end face of the right part vertical clamping plate 12.

[0031] When closing the door, it is necessary for someone to push the door body 1 so that the door body 1 swings inward around the hinge structure until each first bump 111 passes through the corresponding first groove 433 and enters the card slot surrounded by the left door frame, the first vertical card board 431 and the second vertical card board 432, and each second bump 121 passes through the corresponding second groove 443 and enters the card slot surrounded by the right door frame, the third vertical card board 441 and the fourth vertical card board 442. Then, on the basis of the operator supporting the door body 1, start the driving device, and drive the door body 1 to descend through the driving device, so that the vertical positions of each first bump 111 and the corresponding first groove 433 are staggered, and the vertical positions of each second bump 121 and the corresponding second groove 443 are staggered, thereby locking the door body 1 in the closed state, as Figure 4 shown in the door body 1 is in the closed and locked state.

[0032] When opening the door, similarly, on the basis of the operator supporting the door body 1, start the driving device, and drive the door body 1 to rise through the driving device to a position where the vertical positions of each first bump 111 and the corresponding first groove 433 are aligned and the vertical positions of each second bump 121 and the corresponding second groove 443 are aligned. Then, manually pull the door outward to make the door body 1 swing outward around the hinge structure, as Figure 1 shown in the door body 1 is in the closed and unlocked state, as Figure 9 shown in the door body 1 is in the open state.

[0033] In summary, in the current common sterilization cabinet during use, the opening and closing of the door body 1 both need to rely on manual operation, and during the rising or falling process of the door body 1, a inward supporting force also needs to be applied by someone to ensure that the door body 1 will not be unable to rise or fall due to the jamming of the door body 1. However, in an environment where strict sterilization requirements are required or it is not suitable for people to operate, people are not allowed to enter the working environment where the sterilization cabinet is located. The present application has made a creative design for the traditional-structured sterilization cabinet to meet this need, so that the door body 1 of the sterilization cabinet no longer needs to rely on manual operation during the opening and closing process. The specific structure is as follows.

[0034] Based on the structure of the above-mentioned sterilization cabinet, an automatic door opening and closing device for the sterilization cabinet is designed in this solution. Specifically: A fixed support 54 is fixedly arranged on the left side wall of the sterilization cabinet, as shown in 1, Figure 4 、 Figure 6 、 Figure 7 、 Figure 9As shown in the figure, a C-shaped card fixing plate 3 is fixedly arranged on the front surface of the door hinge plate 2. The left end of the horizontally and transversely placed cylinder block 5 is hinged to a fixed support 54, and the two are hinged at point e. The right section of the cylinder body of the cylinder is supported on the C-shaped card fixing plate 3 through a first C-shaped card 31, and the extending rod 51 of the cylinder points to the right. On the front surface of the door body 1 beyond the right side of the door hinge plate 2 and the right side of the C-shaped card fixing plate 3, a sliding door support 33 with a linear transmission shaft 35 is fixedly arranged. The axial direction of the linear transmission shaft 35 is parallel to the ascending and descending directions of the door body 1. The rod end assembly 52 is supported on the C-shaped card fixing plate 3 through a second C-shaped card 32, and the left end of the rod end assembly 52 is fixedly connected to the extending rod 51 of the cylinder. The right end of the rod end assembly 52 is movably sleeved on the linear transmission shaft 35 through a linear bearing 34. During the process of the door body 1 ascending or descending under the drive of the driving device, the linear transmission shaft 35 movably inserted into the linear bearing 34 ascends or descends relative to the linear bearing 34.

[0035] When closing the door, the extending rod 51 of the cylinder extends outwards, pushing the door body 1 to swing inwards around the hinge structure until each first convex block 111 passes through the corresponding first groove 433 and enters the card slot surrounded by the left door frame, the first vertical card plate 431 and the second vertical card plate 432. Each second convex block 121 passes through the corresponding second groove 443 and enters the card slot surrounded by the right door frame, the third vertical card plate 441 and the fourth vertical card plate 442. At this time, the extending rod 51 of the cylinder has an inward acting force on the door body 1, which is equivalent to the supporting acting force of an operator supporting the door body 1. Start the driving device, and drive the door body 1 to descend through the driving device, so that the upper and lower positions of each first convex block 111 and the corresponding first groove 433 are staggered, and the upper and lower positions of each second convex block 121 and the corresponding second groove 443 are staggered, thereby locking the door body 1 in the closed state.

[0036] Before opening the door, the extending rod 51 of the cylinder always has an inward acting force on the door body 1, which is equivalent to the supporting acting force of an operator supporting the door body 1 before opening the door. Start the driving device, and drive the door body 1 to ascend through the driving device to a position where the upper and lower positions of each first convex block 111 and the corresponding first groove 433 are aligned, and the upper and lower positions of each second convex block 121 and the corresponding second groove 443 are aligned. Then, retract the extending rod 51 of the cylinder inwards, pulling the door body 1 to swing outwards around the hinge structure to open the door body 1.

[0037] In this way, the purposes of automatic door opening, automatic door closing, automatic door locking, and automatic unlocking can be achieved, without relying on manual operation anymore, saving time and effort, greatly reducing the labor cost. In addition, the overall structure is simple and compact, and the operation is very convenient.

[0038] Theoretically, the above-mentioned horizontal installation method of the air cylinder belongs to an irregular installation method in the field of air cylinder use, and this installation method is also explicitly prohibited in the user manual of the air cylinder manufacturer, because the above-mentioned horizontal installation method is likely to cause damage or even bending of the air cylinder during use. Therefore, no enterprise currently adopts this air cylinder installation method. The applicant of this solution, however, takes a different approach, adopts this installation method, and adds a C-shaped card fixing plate 3, a first C-shaped card 31, and a second C-shaped card 32 to support and protect the air cylinder and ensure its normal operation.

[0039] Embodiment 2

[0040] This embodiment elaborates on the structure of the driving device based on Embodiment 1.

[0041] As Figure 1 and Figure 2 shown, the structure of the driving device described in this embodiment is as follows: A door motor 6 is fixedly installed on the front surface of the door body 1. A driving sprocket 61 is installed on the motor shaft of the door motor 6. The driven sprocket shaft is supported on the front surface of the door body 1 below the driving sprocket 61 through a mounting seat. A chain 63 is wound around the driving sprocket 61 and the driven sprocket 62. A horizontally placed screw rod 64 is fixedly connected to the left end of the driven sprocket shaft. The end of the first rod 661 of the L-shaped lever composed of the first rod 661 and the second rod 662 is hinged to the door hinge plate 2, and the hinge point between the two is point a. The connecting ends of the first rod 661 and the second rod 662 are hinged to the front surface of the door body 1, and the hinge point between the two is point b. The left end of the nut sleeve 65 with an internal thread section is hinged to the end of the second rod 662, and the hinge point between the two is point d. The left end of the screw rod 64 is screwed into the right end of the nut sleeve 65 from the right end and forms a screw drive with the internal thread section.

[0042] When the door motor 6 is started, power is transmitted to the screw rod 64 through chain drive. Assuming that the screw rod 64 gradually withdraws from the nut sleeve 65 during the rotation of the screw rod 64, that is, the nut sleeve 65 gradually moves to the left. During this process, the L-shaped lever will be pushed to swing clockwise relative to the hinge point b, thereby causing the door body 1 to move downward relative to the door hinge plate 2, that is, the door body 1 descends. Conversely, when the door motor 6 rotates in the reverse direction, at this time, the screw rod 64 gradually penetrates into the nut sleeve 65 during the rotation of the screw rod 64, that is, the nut sleeve 65 gradually moves to the right. During this process, the L-shaped lever will be pushed to swing counterclockwise relative to the hinge point b, thereby causing the door body 1 to move upward relative to the door hinge plate 2, that is, the door body 1 ascends.

[0043] In this embodiment, a door frame 101 is sequentially arranged on the front surface of the door body 1, and an outer door body encapsulated on the front surface of the door frame 101. After the motor shaft of the door motor 6 extends out of the right side of the driving sprocket 61, it is fixedly connected to the left end of a manually operated lever 601 placed horizontally. The right end of the manually operated lever 601 passes through the through hole on the door frame 101 and extends outside the right side of the door frame 101. During actual use, if a special situation such as a power outage or a trip causes the door motor 6 to malfunction and it is necessary to open the door body 1 urgently, the manually operated lever 601 can be rotated to drive the chain drive and screw drive, so that the door body 1 rises to a position where the upper and lower positions of each first convex block 111 are aligned with the corresponding first concave groove 433, and the upper and lower positions of each second convex block 121 are aligned with the corresponding second concave groove 443, and then the door body 1 is manually pulled open.

[0044] To ensure reliable positioning of the final position after the door body 1 descends and the final position after it rises, in this embodiment, a first limit switch 21 and a second limit switch 22 are fixedly installed on the right side of the door hinge plate 2, and the first limit switch 21 is located above the second limit switch 22. A first stop block 14 is arranged on the door body 1 directly above the contact point of the first limit switch 21. When the contact point of the first limit switch 21 touches the first stop block 14, as Figure 4 and Figure 5 shown, at this time, the upper and lower positions of each first convex block 111 are aligned with the corresponding first concave groove 433, and the upper and lower positions of each second convex block 121 are aligned with the corresponding second concave groove 443. At this time, the door body 1 is in the final position after rising. A second stop block 15 is arranged on the door body 1 directly below the contact point of the second limit switch 22. When the contact point of the second limit switch 22 touches the second stop block 15, as Figure 1 and Figure 2 shown, the upper and lower positions of each first convex block 111 are staggered from the corresponding first concave groove 433, and the upper and lower positions of each second convex block 121 are staggered from the corresponding second concave groove 443. At this time, the door body 1 is in the final position after descending.

[0045] In addition, to ensure that the door body 1 can be well combined with the door frame structure, in this embodiment, a third limit switch 16 is arranged on the right edge of the door body 1, and a third stop block 444 is arranged on the right door frame at the same height as the contact point of the third limit switch 16. As Figure 2 、 Figure 5 and Figure 8 shown, when the left vertical clamping plate 11 is located in the clamping groove surrounded by the left door frame, the first vertical clamping plate 431 and the second vertical clamping plate 432, and the right vertical clamping plate 12 is located in the clamping groove surrounded by the right door frame, the third vertical clamping plate 441 and the fourth vertical clamping plate 442, the contact point of the third limit switch 16 touches the third stop block 444, and at this time, the door body 1 is closed in place.

[0046] In actual operation, connect the signal lines of the first limit switch 21, the second limit switch 22, and the third limit switch 16 to the control system. Whether the door motor 2 and the air cylinder start or not is also controlled by the control system, and then the full-automatic operation of the door body 1 for opening, closing, locking, and unlocking can be realized.

[0047] The operation process of opening the door body 1 in the closed and locked state is as follows: When the door body 1 rises to the contact of the first limit switch 21 touching the first stop block 14, the control system controls the door motor 2 to stop. At this time, the door body 1 is at the final position after rising, which is also the position where the door body 1 is in the unlocked state. Then the control system controls the air cylinder to act, so that the extending rod 51 of the air cylinder retracts inward, pulling the door body 1 to swing outward around the hinge structure to open the door body 1.

[0048] The operation process of closing the door body 1 in the open state is as follows: The control system controls the air cylinder to act, so that the extending rod 51 of the air cylinder extends outward, pushing the door body 1 to swing inward around the hinge structure until each first convex block 111 passes through the corresponding first groove 433 and enters the card slot surrounded by the left door frame, the first vertical clamping plate 431, and the second vertical clamping plate 432. After each second convex block 121 passes through the corresponding second groove 443 and enters the card slot surrounded by the right door frame, the third vertical clamping plate 441, and the fourth vertical clamping plate 442, the extending rod 51 of the air cylinder maintains at this position. Then the control system controls the door motor 2 to start, so that the door body 1 descends to the contact of the second limit switch 22 touching the second stop block 15, and the control system controls the door motor 2 to stop. At this time, the door body 1 is at the final position after descending, which is also the position where the door body 1 is in the locked state.

[0049] Embodiment III

[0050] This embodiment elaborates on the up-and-down sliding structure on the basis of Embodiment I or Embodiment II.

[0051] Such as Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 6As shown, the up-and-down sliding structure described in this embodiment is as follows: An upper support 41 with a first linear transmission shaft 411 is fixedly arranged on the upper section of the front surface of the door body 1, and a lower support 42 with a second linear transmission shaft is fixedly arranged on the lower section of the front surface of the door body 1. The axial directions of the first linear transmission shaft 411 and the second linear transmission shaft are both parallel to the ascending and descending directions of the door body 1. A first linear bearing movably sleeved on the first linear transmission shaft 411 and a second linear bearing movably sleeved on the second linear transmission shaft are fixedly installed on the back surface of the door hinge plate 2. During the ascending process of the door body 1, the first linear transmission shaft 411 movably inserted into the first linear bearing moves upward relative to the first linear bearing, and the second linear transmission shaft movably inserted into the second linear bearing moves upward relative to the second linear bearing. Similarly, during the descending process of the door body 1, the first linear transmission shaft 411 movably inserted into the first linear bearing moves downward relative to the first linear bearing, and the second linear transmission shaft 411 movably inserted into the second linear bearing moves downward relative to the second linear bearing.

[0052] In order to ensure that the door body 1 can ascend or descend smoothly, at least one guiding structure is arranged between the door body 1 and the door hinge plate 2 in this embodiment; as Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the guiding structure described in this embodiment is an L-shaped guiding block 13 or a C-shaped guiding block fixedly arranged on the front surface of the door body 1. The right end of the door hinge plate 2 extends into the guiding groove 131 formed between the L-shaped guiding block 13 and the door body 1, or the right end of the door hinge plate 2 extends into the guiding groove of the C-shaped guiding block. During the ascending or descending process of the door body 1 relative to the door hinge plate 2, the right side of the door hinge plate 2 is restricted by the guiding groove 131, so as to ensure that the door body 1 can ascend or descend smoothly without deflection during the ascending or descending process.

[0053] The above description is only a preferred embodiment of the present invention and does not impose any other form of limitation on the present invention. Any modification or equivalent change made according to the technical essence of the present invention still falls within the scope of protection required by the present invention.

Claims

1. Automatic door opening and closing device for sterilization cabinet, comprising: The door body is hinged to the door hinge plate connected to the left door frame of the sterilization cabinet. The door body is installed on the back surface of the door hinge plate through an up-and-down sliding structure. A driving device for driving the door body to rise or fall relative to the door hinge plate through the up-and-down sliding structure is provided between the door body and the door hinge plate; on the left door frame on the right side of the hinge joint of the door hinge plate and the left door frame, a left vertical clamping plate is fixedly arranged. The left vertical clamping plate is an L-shaped structure composed of a first vertical clamping plate fixedly connected to the left door frame and a second vertical clamping plate parallel to the left door frame. On the right end surface of the second vertical clamping plate, a plurality of first grooves penetrating from front to back are uniformly spaced from top to bottom in sequence; on the right door frame of the sterilization cabinet, a right vertical clamping plate is fixedly arranged. The right vertical clamping plate is an L-shaped structure composed of a third vertical clamping plate fixedly connected to the right door frame and a fourth vertical clamping plate parallel to the right door frame. On the left end surface of the fourth vertical clamping plate, a plurality of second grooves penetrating from front to back are uniformly spaced from top to bottom in sequence; on the left side wall of the door body, a left part vertical clamping plate is fixedly arranged. On the left end surface of the left part vertical clamping plate, a plurality of first bumps protruding outwards and corresponding to and matching with each first groove are sequentially spaced from top to bottom. On the right side wall of the door body, a right part vertical clamping plate is fixedly arranged. On the right end surface of the right part vertical clamping plate, a plurality of second bumps protruding outwards and corresponding to and snap-fitting with each second groove are sequentially spaced from top to bottom. It is characterized in that: on the left side wall of the sterilization cabinet, a fixed support is fixedly arranged. On the front surface of the door hinge plate, a C-shaped card fixing plate is fixedly arranged. The left end of the horizontally placed cylinder body is hinged to the fixed support. The right section of the cylinder body of the cylinder is supported on the C-shaped card fixing plate through a first C-shaped card, and the extending rod of the cylinder points to the right; on the front surface of the door body beyond the right side of the door hinge plate and the right side of the C-shaped card fixing plate, a sliding door support with a linear transmission shaft is fixedly arranged. The axial direction of the linear transmission shaft is parallel to the rising and falling direction of the door body. The rod end assembly is supported on the C-shaped card fixing plate through a second C-shaped card, and the left end of the rod end assembly is fixedly connected to the extending rod of the cylinder. The right end of the rod end assembly is movably sleeved on the linear transmission shaft through a linear bearing.

2. The automatic door opening and closing device for a sterilization cabinet according to claim 1, wherein: The structure of the driving device is: a door motor is fixedly installed on the front surface of the door body. A driving sprocket is installed on the motor shaft of the door motor. The driven sprocket shaft is supported on the front surface of the door body below the driving sprocket through a mounting seat. A chain is wound around the driving sprocket and the driven sprocket. A horizontally placed screw rod is fixedly connected to the left end of the driven sprocket shaft; the end of the first rod of the L-shaped lever composed of the first rod and the second rod is hinged to the door hinge plate. The connection end of the first rod and the second rod is hinged to the front surface of the door body. The left end of the nut sleeve with an internal thread section is hinged to the end of the second rod. The left end of the screw rod is screwed into the right end of the nut sleeve to form a screw drive with the internal thread section.

3. The automatic door opening and closing device for the sterilization cabinet according to claim 2, wherein: On the front of the door body, a door body frame and an outer door body encapsulated on the front of the door body frame are sequentially arranged. After the motor shaft of the door motor extends out of the right side of the driving sprocket, it is fixedly connected to the left end of a manually operated lever placed horizontally. The right end of the manually operated lever passes through the through hole on the door body frame and extends outside the right side of the door body frame.

4. The automatic door opening and closing device for a sterilization cabinet according to claim 1 or 2 or 3, characterized in that: The up and down sliding structure is as follows: An upper support with a first linear transmission shaft is fixedly arranged on the upper section of the front of the door body, and a lower support with a second linear transmission shaft is fixedly arranged on the lower section of the front of the door body. The axial directions of both the first linear transmission shaft and the second linear transmission shaft are parallel to the up and down direction of the door body. A first linear bearing movably sleeved on the first linear transmission shaft and a second linear bearing movably sleeved on the second linear transmission shaft are fixedly installed on the back of the door hinge plate.

5. The automatic door opening and closing device for a sterilization cabinet according to claim 4, wherein: At least one guiding structure is arranged between the door body and the door hinge plate; the guiding structure is an L-shaped guiding block or a C-shaped guiding block fixedly arranged on the front of the door body. The right end of the door hinge plate extends into the guiding groove formed between the L-shaped guiding block and the door body, or the right end of the door hinge plate extends into the guiding groove of the C-shaped guiding block.

6. The automatic door opening and closing device for a sterilization cabinet according to claim 1 or 2 or 3, characterized in that: A first limit switch and a second limit switch are fixedly installed on the right side of the door hinge plate, and the first limit switch is located above the second limit switch; a first stop block is arranged on the door body directly above the contact point of the first limit switch. When the contact point of the first limit switch touches the first stop block, the up and down positions of each first convex block and the corresponding first groove are aligned, and the up and down positions of each second convex block and the corresponding second groove are aligned; a second stop block is arranged on the door body directly below the contact point of the second limit switch. When the contact point of the second limit switch touches the second stop block, the up and down positions of each first convex block and the corresponding first groove are staggered, and the up and down positions of each second convex block and the corresponding second groove are staggered.

7. The automatic door opening and closing device for a sterilization cabinet according to claim 1 or 2 or 3, characterized in that: A third limit switch is arranged on the right edge of the door body, and a third stop block is arranged on the right door frame at the height aligned with the contact point of the third limit switch. When the left vertical clamping plate is located in the clamping groove surrounded by the left door frame, the first vertical clamping plate and the second vertical clamping plate, and the right vertical clamping plate is located in the clamping groove surrounded by the right door frame, the third vertical clamping plate and the fourth vertical clamping plate, the contact point of the third limit switch touches the third stop block.

8. The automatic door-opening and closing device for a sterilization cabinet according to claim 6, characterized in that: A third limit switch is arranged on the right edge of the door body, and a third stop block is arranged on the right door frame at the height aligned with the contact point of the third limit switch. When the left vertical clamping plate is located in the clamping groove surrounded by the left door frame, the first vertical clamping plate and the second vertical clamping plate, and the right vertical clamping plate is located in the clamping groove surrounded by the right door frame, the third vertical clamping plate and the fourth vertical clamping plate, the contact point of the third limit switch touches the third stop block.

9. The automatic door opening and closing device for the sterilization cabinet according to claim 8, characterized in that: The signal lines of the first limit switch, the second limit switch, and the third limit switch are all connected to the control system, and the start and stop of the driving device and the air cylinder are controlled by the control system.

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