Opening and closing mechanism of cover plate

Abstract

The utility model relates to a cover plate opening and closing mechanism, which comprises a cavity, a cover plate, a rotating assembly and a lifting assembly, the lifting assembly comprises a shaft sleeve, a lifting shaft and a driving piece, the shaft sleeve is fixed on the outer surface of the cavity, the lifting shaft is sleeved in the shaft sleeve, the upper end of the lifting shaft is connected with the cover plate through the rotating assembly, and the cover plate can rotate relative to the lifting shaft through the rotating assembly. The driving part is arranged at the bottom of the shaft sleeve and is in transmission connection with the lifting shaft so as to drive the lifting shaft to do lifting motion in the shaft sleeve and further drive the cover plate to be opened or closed relative to the cavity, so that the opening and closing mechanism of the cover plate is convenient to maintain, and the convenience of maintaining the opening and closing mechanism of the cover plate is improved.

Description

Technical Field

[0001] The utility model relates to the field of manufacturing equipment, in particular to an opening and closing mechanism of a cover plate. Background Art

[0002] In the field of semiconductor or photovoltaic pan-semiconductor manufacturing technology, due to the high cleanliness level requirements of the equipment workshop, most of them do not have lifting auxiliary tools such as cranes. When the equipment chamber needs to be opened for equipment maintenance, the operator usually opens the cover by flipping the cover upward. Usually, the cover is equipped with parts below, such as sputtering targets that need to be replaced frequently. In the traditional flip-opening structure, after the cover is flipped open, the parts originally set below the cover will be placed above the cover after flipping. At this time, the replacement of parts requires the use of lifting auxiliary tools, which is inconvenient to operate and difficult to maintain. Utility Model Content

[0003] Based on this, it is necessary to provide an opening and closing mechanism of the cover plate, which is convenient for separating the cover plate and the cavity, making the opening and closing mechanism of the cover plate easy to maintain, and improving the convenience of maintaining the opening and closing mechanism of the cover plate.

[0004] A cover opening and closing mechanism comprises a cavity, a cover, a rotating assembly and a lifting assembly, the lifting assembly comprising a sleeve, a lifting shaft and a driving member, the sleeve being fixed to the outer surface of the cavity, the lifting sleeve being arranged in the sleeve, the upper end of the lifting shaft being connected to the cover via a rotating assembly, the cover being able to rotate relative to the lifting shaft via the rotating assembly, the driving member being arranged at the bottom of the sleeve and being transmission-connected to the lifting shaft to drive the lifting shaft to move up and down in the sleeve, thereby driving the cover to open or close relative to the cavity.

[0005] In a cover opening and closing mechanism provided in the present application, the cover opening and closing mechanism includes a cavity, a cover, a rotating assembly and a lifting assembly. The lifting assembly includes a sleeve, a lifting shaft and a driving member. The sleeve is fixed to the outer surface of the cavity, and the lifting sleeve is arranged in the sleeve. The upper end of the lifting shaft is connected to the cover through the rotating assembly. The cover can rotate relative to the lifting shaft through the rotating assembly. The driving member is arranged at the bottom of the sleeve and is transmission-connected to the lifting shaft to drive the lifting shaft to move up and down in the sleeve, thereby driving the cover to open or close relative to the cavity, so that the opening and closing mechanism of the cover is easy to maintain, thereby improving the convenience of maintaining the opening and closing mechanism of the cover.

[0006] In one embodiment, the cover plate is connected to the top end of the lifting shaft via a bearing.

[0007] In one embodiment, the rotating assembly includes an upper plane bearing and a lower plane bearing, and the upper plane bearing and the lower plane bearing are both sleeved on the top end of the lifting shaft and are respectively connected to the upper surface and the lower surface of the cover plate.

[0008] In one embodiment, a step structure is provided at the top end of the lifting shaft, the bottom end of the lower plane bearing is overlapped on the step structure, the top end of the lower plane bearing is connected to the lower surface of the cover plate, and the top end and the bottom end of the lower plane bearing are rotatably connected; the top end of the upper plane bearing is connected to the lifting shaft, the bottom end of the upper plane bearing is connected to the cover plate, and the top end and the bottom end of the upper plane bearing are rotatably connected.

[0009] In one embodiment, a pressure cover is further included, and the pressure cover is fixed to the top end surface of the lifting shaft through a fastener, and the pressure cover presses the top end of the upper plane bearing.

[0010] In one embodiment, a clamping half-moon block is further provided on the outer side of the cavity, and a concave assembly groove is formed on the side surface of the cavity. The clamping half-moon block is fixed to the cavity, and the clamping half-moon block has a half-moon-shaped structure. The clamping half-moon block locks the sleeve in the concave assembly groove, and the shape and size of the cross-section of the space enclosed between the clamping half-moon block and the concave assembly groove are adapted to the sleeve.

[0011] In one embodiment, a keyway is formed on the inner side surface of the sleeve along the height direction, and a guide key is fixed on the outer side surface of the lifting shaft. The guide key is inserted into the keyway and can slide along the keyway.

[0012] In one embodiment, a receiving hole is formed on the bottom surface of the lifting shaft, a nut is fixed in the receiving hole, the driving member includes a driving motor and a screw rod, the driving motor is fixed to the bottom end of the sleeve, the driving motor is transmission-connected to the screw rod, the screw rod extends into the receiving hole and is transmission-connected to the nut.

[0013] In one embodiment, a target material is connected to the bottom of the cover plate.

[0014] In one embodiment, the outer surface of the lifting shaft is slidably connected to the inner surface of the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0016] Figure 1 A first schematic diagram of an opening and closing mechanism of a cover provided in an embodiment of the present application;

[0017] Figure 2 A second schematic diagram of the opening and closing mechanism of the cover provided in one embodiment of the present application;

[0018] Figure 3 A side view of an opening and closing mechanism of a cover provided in one embodiment of the present application;

[0019] Figure 4 for Figure 3 sectional view of

[0020] Figure 5 for Figure 4 Magnified view of the circled part.

[0021] Reference numerals: cover opening and closing mechanism 10; cavity 20; inner concave assembly groove 21; cover 30; clamping half-moon block 40; lifting assembly 50; bushing 51; keyway 510; lifting shaft 52; guide key 520; accommodating hole 521; nut 523; driving member 53; driving motor 531; screw rod 532; step structure 54; fastener 60; rotating assembly 70; upper plane bearing 71; lower plane bearing 72; pressure cover 80 DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] In the field of semiconductor or photovoltaic pan-semiconductor manufacturing technology, due to the high cleanliness level requirements of the equipment workshop, most of them do not have lifting auxiliary tools such as cranes. When it is necessary to open the cover of the equipment chamber for equipment maintenance, the operator usually opens the cover by flipping the cover plate 30 upward. Usually, the cover plate 30 is provided with parts below, such as sputtering targets that need to be replaced frequently. In the traditional flip-opening structure, after flipping the cover, the parts originally set at the bottom of the cover plate 30 will be placed above the cover plate 30 after flipping. At this time, the replacement of parts requires the help of lifting auxiliary tools, such as flipping upward. Then the large parts under the cover plate 30, such as the plane target of the plane target sputtering, the large quartz parts of the cavity 20, etc., will become the top of the cover plate 30 after flipping. When the weight of the parts exceeds the weight of manual handling, lifting tools are required. For semiconductor factories or pan-semiconductor factories without lifting cranes, maintenance will become difficult, inconvenient to operate, and difficult to maintain. Therefore, there is an urgent need for a cover opening and closing mechanism 10 that is easy to maintain and improves the convenience of maintenance.

[0027] refer to Figure 1 to Figure 5 In order to solve the above problems, the embodiment of the present application provides an opening and closing mechanism 10 of a cover plate, comprising a cavity 20, a cover plate 30, a rotating assembly 70 and a lifting assembly 50, wherein the lifting assembly 50 comprises a sleeve 51, a lifting shaft 52 and a driving member 53, wherein the sleeve 51 is fixed to the outer surface of the cavity 20, the lifting shaft 52 sleeve 51 is arranged in the sleeve 51, the upper end of the lifting shaft 52 is connected to the cover plate 30 through the rotating assembly 70, and the cover plate 30 can rotate relative to the lifting shaft 52 through the rotating assembly 70, and the driving member 53 is arranged at the bottom of the sleeve 51 and is transmission-connected with the lifting shaft 52 to drive the lifting shaft 52 to move up and down in the sleeve 51, thereby driving the cover plate 30 to open or close relative to the cavity 20.

[0028] In the cover opening and closing mechanism 10, the cover opening and closing mechanism 10 includes a cavity 20, a cover 30, a rotating assembly 70 and a lifting assembly 50. The cavity 20 has a containing function, and the required equipment can be placed in the cavity 20. The cover 30 protects the cavity 20. At the same time, the cover 30 can be opened or closed. By opening the cover 30, the interior of the cavity 20 can be maintained or inspected. The rotating assembly 70 is connected to the cover 30 through the rotating assembly 70. The cover 30 can rotate relative to the lifting shaft 52 through the rotating assembly 70. The rotating assembly 70 has the characteristic of being able to rotate. Specifically, when the rotating assembly 70 moves to the first position, the cover 30 opens so that the cavity 20 is in an open state, which is convenient for inspection and maintenance of the cavity 20. When the rotating assembly 70 moves to the second position, the cover 30 closes so that the cavity 20 is in a closed state. The lifting assembly 50 includes a sleeve 51, a lifting shaft 52 and a driving member 53. The lifting shaft 52 sleeve 51 is arranged in the sleeve 51. The lifting shaft 52 is connected to the cover plate 30. The upper end of the lifting shaft 52 is connected to the cover plate 30. The movement of the lifting shaft 52 can drive the cover plate 30 to move. The driving member 53 is arranged at the bottom of the sleeve 51 and is transmission-connected to the lifting shaft 52. The driving member 53 has a driving function. The driving member 53 is transmission-connected to the lifting shaft 52. The driving member 53 can be used to drive the lifting shaft 52 to perform a lifting movement in the sleeve 51. Since the lifting shaft 52 is connected to the cover plate 30, the movement of the lifting shaft 52 driven by the driving member 53 can drive the cover plate 30 to open or close relative to the cavity 20. Specifically, when the driving member 53 drives the lifting shaft 52 to move downward, the cover plate 30 is in a closed state relative to the cavity 20. Correspondingly, when the driving member 53 drives the lifting shaft 52 to move upward, the cover plate 30 is in an open state relative to the cavity 20. In the opening and closing mechanism 10 of the cover, the rotating component 70 and the lifting component 50 can cooperate with each other, and the lifting component 50 can perform lifting movement driven by the driving member 53. When the cover 30 moves upward driven by the rotating shaft, the cover 30 is opened relative to the cavity 20. At this time, the opening state of the cover 30 can be adjusted by adjusting the rotating component 70, that is, the driving member 53 is arranged at the bottom of the sleeve 51 and is connected to the lifting shaft 52 in transmission to drive the lifting shaft 52 to move up and down in the sleeve 51, thereby driving the cover 30 to open or close relative to the cavity 20. Through the above structure, different from the opening and closing mechanism 10 of the cover in the prior art, the opening and closing mechanism 10 of the cover provided in the present application can open or close the cover 30 relative to the cavity 20 without flipping the cover 30. By opening the cover 30, the interior of the cavity 20 can be maintained or inspected, which facilitates the separation of the cover 30 and the cavity 20. At the same time, the rotating component 70 can control the angle and degree of opening of the cover 30, so that the opening and closing mechanism 10 of the cover is easy to maintain, thereby improving the convenience of maintaining the opening and closing mechanism 10 of the cover.

[0029] refer to Figure 1 to Figure 4The cover plate 30 is connected to the top end of the lifting shaft 52 through a bearing, so that when the lifting shaft 52 performs a lifting movement in the shaft sleeve 51, it can drive the cover plate 30 to perform a lifting movement. In some embodiments, the rotating assembly 70 includes an upper plane bearing 71 and a lower plane bearing 72, both of which are sleeved on the top of the lifting shaft 52 and are respectively connected to the upper surface and the lower surface of the cover plate 30. In some embodiments, the top of the lifting shaft 52 is provided with a step structure 54, and the bottom end of the lower plane bearing 72 is overlapped on the step structure 54. The top of the lower plane bearing 72 is connected to the lower surface of the cover plate 30, and the top and bottom ends of the lower plane bearing 72 are rotatably connected. The top of the upper plane bearing 71 is connected to the lifting shaft 52, and the bottom end of the upper plane bearing 71 is connected to the cover plate 30. The top and bottom ends of the upper plane bearing 71 are rotatably connected. The upper plane bearing 71 and the lower plane bearing 72 can ensure that the cover plate 30 rotates relative to the lifting shaft 52, and at the same time, the upper plane bearing 71 and the lower plane bearing 72 can ensure that the cover plate 30 is in a horizontal state when rotating. When the lifting shaft 52 is lifted to the height required by the user, the opening and closing angle of the cover plate 30 can be adjusted manually. In some embodiments, the cover plate 30 is set to rotate clockwise in the plane where the cover plate 30 is located to be in a closed state, and the cover plate 30 is set to rotate counterclockwise in the plane where the cover plate 30 is located to be in an open state. Specifically, when the lifting shaft 52 is raised to the required height in the sleeve 51, the cover plate 30 is rotated counterclockwise by manual operation, and the cover plate 30 is rotated horizontally relative to the lifting shaft 52, and the cover plate 30 is gradually opened. At this time, the operator can perform maintenance or work in the cavity 20 as required. When the cavity 20 needs to be closed, it is only necessary to rotate the cover plate 30 clockwise, and the cover plate 30 is gradually closed. After that, by controlling the height of the lifting shaft 52 in the sleeve 51, the lifting shaft 52 drives the cover plate 30 to gradually descend until the cover plate 30 fits the cavity 20, thereby achieving complete closure of the cavity 20. In this process, there is no need to flip the cover plate 30. Usually, other equipment is arranged on the cover plate 30. In some embodiments, a target material is connected to the bottom of the cover plate 30. The solution of the present application can avoid the need to flip the cover plate 30 to open and close the cover plate 30 in the prior art through a new opening and closing method, so that the cover plate opening and closing mechanism 10 is easy to maintain and the convenience of maintaining the cover plate opening and closing mechanism 10 is improved.

[0030] refer to Figure 3 and Figure 4The opening and closing mechanism 10 of the cover plate also includes a pressure cover 80, which can limit the cover plate 30, so that the pressure cover 80 can press the cover plate 30 to ensure the normal rotation of the cover plate 30. In some embodiments, the pressure cover 80 is fixed to the top end face of the lifting shaft 52 by a fastener 60, and presses the top end of the upper plane bearing 71. The fastener 60 can further fix the position of the pressure cover 80. When the fastener 60 is tightened, the positions of the pressure cover 80 and the cover plate 30 are relatively fixed, and the upper plane bearing 71, the cover plate 30 and the lower plane bearing 72 are relatively in a compressed state; when the fastener 60 is loosened, the positions of the pressure cover 80 and the cover plate 30 are relatively loose, and the cover plate 30 can rotate between the upper plane bearing 71 and the lower plane bearing 72. In some embodiments, the sleeve 51 has a hollow cylindrical structure. In some embodiments, the size of the lifting shaft 52 can match the sleeve 51, and the top of the lifting shaft 52 extends out of the sleeve 51. In some embodiments, the outer surface of the lifting shaft 52 is slidably connected to the inner surface of the sleeve 51, and the lifting shaft 52 can slide up and down in the sleeve 51. In some embodiments, the cover plate 30 is rotatably connected to the lifting shaft 52, so that the cover plate 30 can move driven by the lifting shaft 52.

[0031] refer to Figure 1 to Figure 4The side surface of the cavity 20 forms a concave assembly groove 21, and the clamping half-moon block 40 is fixed to the cavity 20. The clamping half-moon block 40 is a half-moon-shaped structure. The half-moon-shaped structure can make the clamping half-moon block 40 better fit the concave assembly groove 21. The clamping half-moon block 40 locks the shaft sleeve 51 in the concave assembly groove 21. The clamping half-moon block 40 can play a role of limiting, so that the shaft sleeve 51 can be stably locked in the concave assembly groove 21. The shape and size of the cross-section of the space enclosed between the clamping half-moon block 40 and the concave assembly groove 21 are adapted to the shaft sleeve 51. In some embodiments, the semicircular structure of the clamping half-moon block 40 and the cavity 20 forms a circle with the same diameter as the shaft sleeve 51, which is conducive to making the clamping half-moon block 40, the shaft sleeve 51 and the concave assembly groove 21 stable and compact in structure, and is conducive to the stability of the overall structure of the opening and closing mechanism 10 of the cover plate. In some embodiments, the clamping half-moon block 40, the sleeve 51 and the cavity 20 are fixed by a fastener 60, and the fastener 60 has a fixing function. In some embodiments, the fastener 60 can be a screw. Through the screw connection, the position of the clamping half-moon block 40 and the sleeve 51 can be fixed relative to the cavity 20. In some embodiments, the position of the clamping half-moon block 40 and the sleeve 51 relative to the cavity 20 can also be detachably connected, which is conducive to the maintenance or inspection of the opening and closing mechanism 10 of the cover. In some embodiments, a key slot 510 is formed on the inner side of the sleeve 51 along the height direction, and a guide key 520 is fixed on the outer side of the lifting shaft 52. The guide key 520 is inserted into the key slot 510 and can slide along the key slot 510. In some embodiments, the guide key 520 is structurally compatible with the key slot 510. The insertion of the guide key 520 into the key slot 510 can enable the lifting shaft 52 to slide relative to the sleeve 51. At the same time, the guide key 520 can be inserted into the key slot 510 to ensure that the guide is determined when the lifting shaft 52 is lifted and slid, that is, the lifting shaft 52 can only move along the height direction of the sleeve 51, and the radial rotation direction of the lifting shaft 52 can be eliminated, so that the movement direction of the lifting shaft 52 has only a fixed up and down degree of freedom. This is conducive to ensuring the certainty of the trajectory of the opening and closing mechanism 10 of the cover when it is lifted and lowered, and is conducive to increasing the practicality of the opening and closing mechanism 10 of the cover. In some embodiments, the driving member 53 is fixedly connected to the bottom of the sleeve 51, and the driving member 53 can provide drive for the opening and closing mechanism 10 of the cover. In some embodiments, the driving member 53 includes a driving motor 531 and a screw rod 532. The driving motor 531 is transmission-connected to the screw rod 532. The screw rod 532 extends into the accommodating hole 521 and is transmission-connected to the nut 523. In some embodiments, the driving motor 531 can be a DC motor or an AC motor. Specifically, the DC motor uses a DC power supply and controls the motor speed and torque by adjusting the voltage and current. The AC motor converts the AC power supply into a current with adjustable frequency and amplitude through a frequency converter to control the motor speed and operating state.In some embodiments, a receiving hole 521 is formed on the bottom surface of the lifting shaft 52 , and the receiving hole 521 can be used to install the screw rod 532 . A nut 523 is fixed in the receiving hole 521 , and the lifting shaft 52 can be connected to the screw rod 532 through the nut 523 .

[0032] refer to Figure 1 to Figure 5When the cover opening and closing mechanism 10 is used, since the lifting assembly 50 includes a sleeve 51, a lifting shaft 52 and a driving member 53, the lifting shaft 52 sleeve 51 is arranged in the sleeve 51, the lifting shaft 52 is connected to the cover 30, and the upper end of the lifting shaft 52 is connected to the cover 30. The movement of the lifting shaft 52 can drive the cover 30 to move. The driving member 53 is arranged at the bottom of the sleeve 51 and is transmission-connected with the lifting shaft 52. The driving member 53 has a driving function. The driving member 53 is transmission-connected with the lifting shaft 52, and the driving member 53 can be used to drive the lifting shaft 52 to move up and down in the sleeve 51. Since the lifting shaft 52 is connected to the cover 30, the movement of the lifting shaft 52 driven by the driving member 53 can drive the cover 30 to open or close relative to the cavity 20. For example, when the driving member 53 drives the lifting shaft 52 to move downward, the cover 30 is in a closed state relative to the cavity 20. Correspondingly, when the driving member 53 drives the lifting shaft 52 to move upward, the cover 30 is in an open state relative to the cavity 20. In the opening and closing mechanism 10 of the cover, the rotating component 70 and the lifting component 50 can cooperate with each other, and the lifting component 50 can perform lifting movement driven by the driving member 53. When the cover 30 moves upward driven by the rotating shaft, the cover 30 is opened relative to the cavity 20. At this time, the opening state of the cover 30 can be adjusted by adjusting the rotating component 70, that is, the driving member 53 is arranged at the bottom of the sleeve 51 and is connected to the lifting shaft 52 in transmission to drive the lifting shaft 52 to move up and down in the sleeve 51, thereby driving the cover 30 to open or close relative to the cavity 20. The cover opening and closing mechanism 10 also includes a rotating assembly 70, through which the cover 30 is connected, and the cover 30 can be rotated relative to the lifting shaft 52 through the rotating assembly 70. The rotating assembly 70 has the characteristic of being able to rotate. Specifically, when the rotating assembly 70 moves to the first position, the cover 30 is opened so that the cavity 20 is in an open state, which is convenient for inspection and maintenance of the cavity 20. When the rotating assembly 70 moves to the second position, the cover 30 is closed so that the cavity 20 is in a closed state. When the lifting shaft 52 is raised to the required height in the sleeve 51, the cover 30 is rotated counterclockwise by manual operation, and the cover 30 is horizontally rotated relative to the lifting shaft 52, and the cover 30 is gradually opened. At this time, the operator can perform maintenance or work in the cavity 20 according to needs. When the cavity 20 needs to be closed, the cover plate 30 only needs to be rotated clockwise, and the cover plate 30 gradually closes. After that, the height of the lifting shaft 52 in the shaft sleeve 51 can be controlled, and the lifting shaft 52 drives the cover plate 30 to gradually descend until the cover plate 30 fits with the cavity 20, thereby achieving complete closure of the cavity 20. In this process, there is no need to flip the cover plate 30. Usually, other equipment is provided on the cover plate 30, and the bottom of the cover plate 30 is connected to a target material, which avoids the need to flip the cover plate 30 in the prior art to achieve the opening and closing of the cover plate 30, facilitates the separation of the cover plate 30 and the cavity 20, makes the opening and closing mechanism 10 of the cover plate easy to maintain, and improves the convenience of maintaining the opening and closing mechanism 10 of the cover plate.

[0033] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A cover opening and closing mechanism, characterized in that: It includes a cavity, a cover plate, a rotating assembly and a lifting assembly, the lifting assembly includes a sleeve, a lifting shaft and a driving member, the sleeve is fixed to the outer surface of the cavity, the lifting sleeve is arranged in the sleeve, the upper end of the lifting shaft is connected to the cover plate through a rotating assembly, the cover plate can rotate relative to the lifting shaft through the rotating assembly, the driving member is arranged at the bottom of the sleeve and is transmission-connected to the lifting shaft to drive the lifting shaft to move up and down in the sleeve, thereby driving the cover plate to open or close relative to the cavity.

2. The cover opening and closing mechanism according to claim 1, characterized in that: The cover plate is connected to the top end of the lifting shaft through a bearing.

3. The cover opening and closing mechanism according to claim 2, characterized in that: The rotating assembly comprises an upper plane bearing and a lower plane bearing, wherein the upper plane bearing and the lower plane bearing are both sleeved on the top end of the lifting shaft and are respectively connected to the upper surface and the lower surface of the cover plate.

4. The cover opening and closing mechanism according to claim 3, characterized in that: The top end of the lifting shaft is provided with a step structure, the bottom end of the lower plane bearing is overlapped on the step structure, the top end of the lower plane bearing is connected to the lower surface of the cover plate, and the top and bottom ends of the lower plane bearing are rotatably connected; the top end of the upper plane bearing is connected to the lifting shaft, the bottom end of the upper plane bearing is connected to the cover plate, and the top and bottom ends of the upper plane bearing are rotatably connected.

5. The cover opening and closing mechanism according to claim 4, characterized in that: It also includes a pressure cover, which is fixed to the top end surface of the lifting shaft through a fastener, and the pressure cover presses the top end of the upper plane bearing.

6. The cover opening and closing mechanism according to claim 1, characterized in that: A clamping half-moon block is also provided on the outer side of the cavity, and an inner concave assembly groove is formed on the side surface of the cavity. The clamping half-moon block is fixed to the cavity, and the clamping half-moon block has a half-moon-shaped structure. The clamping half-moon block locks the sleeve in the inner concave assembly groove, and the shape and size of the cross-section of the space enclosed between the clamping half-moon block and the inner concave assembly groove are adapted to the sleeve.

7. The cover opening and closing mechanism according to claim 1, characterized in that: The inner side surface of the shaft sleeve forms a keyway along the height direction, and the outer side surface of the lifting shaft is fixed with a guide key, which is inserted into the keyway and can slide along the keyway.

8. The cover opening and closing mechanism according to claim 1, characterized in that: A receiving hole is formed on the bottom surface of the lifting shaft, a nut is fixed in the receiving hole, the driving component includes a driving motor and a screw rod, the driving motor is fixed to the bottom end of the sleeve, the driving motor is transmission-connected to the screw rod, the screw rod extends into the receiving hole and is transmission-connected to the nut.

9. The cover opening and closing mechanism according to claim 1, characterized in that: The bottom of the cover plate is connected with a target material.

10. The cover opening and closing mechanism according to claim 1, characterized in that: The outer surface of the lifting shaft is slidably connected to the inner surface of the shaft sleeve.

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