Film sealing instrument

Abstract

The utility model provides a film sealing instrument, and belongs to the technical field of medical equipment. The film sealing instrument comprises a shell, a carrier assembly and a door body assembly, a film sealing cavity with an opening is formed in the shell, and the opening of the film sealing cavity is formed in the side wall of the shell; the carrying frame assembly comprises a power mechanism and a carrying frame, the power mechanism is arranged on a bottom plate of the film sealing cavity, the power mechanism is in transmission connection with the carrying frame, and the power mechanism drives the carrying frame to stretch out of or retract into the film sealing cavity through the opening in the X direction; the door body assembly comprises a door plate and a reset piece, the door plate is rotationally connected to the bottom plate corresponding to the opening, and the reset piece is arranged between the bottom plate and the door plate; when the carrying frame extends out of the film sealing cavity, the carrying frame pushes the door plate to be opened, and when the carrying frame retracts into the film sealing cavity, the reset piece drives the door plate to be automatically closed. According to the film sealing instrument, the film sealing fluency can be improved, and the time length of a flow before film sealing is shortened, so that the probability of sample loss and space cross contamination caused by evaporation and leakage of sample liquid in a pore plate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a film sealing instrument. Background Art

[0002] In biological tests, the sample liquid to be tested is usually added to each tube of the multi-well plate first, and then the multi-well plate is placed in the test equipment for reaction. Some reactions require heating or oscillation. In order to prevent sample loss and spatial cross-contamination caused by evaporation and leakage of the sample liquid during the test, a film sealer is used to heat-seal a layer of film on the multi-well plate to seal the samples in their respective tubes.

[0003] When sealing a film, the existing film sealing instrument first opens the door panel, then extends the carrier out of the film sealing chamber, places the multi-well plate on the carrier, and then retracts the carrier into the film sealing instrument, and then closes the door panel for sealing. During the entire process, the door panel needs to be opened or closed manually, resulting in an unsmooth sealing process, a long process time before sealing, and the probability of sample loss and space cross contamination caused by evaporation and leakage of sample liquid in the multi-well plate. Utility Model Content

[0004] The utility model aims to provide a film sealing instrument, which can improve the smoothness of film sealing and shorten the duration of the process before film sealing, thereby reducing the probability of sample loss caused by evaporation and leakage of sample liquid in the well plate and the increase of spatial cross contamination.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Film sealing instrument, including:

[0007] A shell having a sealing film cavity with an opening disposed therein, wherein the opening of the sealing film cavity is communicated with a side wall of the shell;

[0008] A carrier assembly, comprising a power mechanism and a carrier, wherein the power mechanism is disposed on the bottom plate of the film sealing chamber, and the power mechanism is in transmission connection with the carrier, and along the X direction, the power mechanism drives the carrier to extend through the opening or retract into the film sealing chamber;

[0009] The door body assembly comprises a door panel and a reset member, wherein the door panel is rotatably connected to the bottom panel corresponding to the opening, and the reset member is arranged between the bottom panel and the door panel;

[0010] When the carrier extends out of the film sealing cavity, the carrier pushes the door panel to open, and when the carrier retracts into the film sealing cavity, the resetting member drives the door panel to close automatically.

[0011] Compared with the prior art, the film sealing instrument provided by the utility model has the following technical advantages:

[0012] Since the door panel is rotatably connected to the bottom plate, and a reset part is provided between the door panel and the bottom plate; at the same time, the carrier is movably provided on the bottom plate along the X direction. Before film sealing, the power mechanism starts to drive the carrier to move in the direction close to the opening, and at the same time, the carrier pushes the door panel to rotate and open, so that the carrier can extend out of the opening; after the carrier extends out of the opening, the porous plate to be sealed is placed on the carrier; then the power mechanism starts again to drive the carrier to move toward the film sealing cavity, and the carrier releases the thrust on the door panel, and at the same time, the reset part drives the door panel to automatically rotate and close, so as to facilitate the film sealing of the porous plate located in the film sealing cavity. During the whole process, with the movement of the carrier, the carrier and the door panel are linked, and during the whole film sealing process, manual opening or closing of the door panel is avoided, thereby improving the smoothness of film sealing, shortening the duration of the process before film sealing, and thereby reducing the probability of sample loss and spatial cross-contamination caused by evaporation and leakage of sample liquid in the well plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a film sealing instrument provided by an embodiment of the utility model;

[0014] Figure 2 It is a partial structural schematic diagram of a film sealing instrument provided by an embodiment of the utility model;

[0015] Figure 3 It is a partial structural axonometric diagram of the film sealing instrument provided by the embodiment of the utility model;

[0016] Figure 4 It is a partial structural cross-sectional view of the film sealing instrument provided by an embodiment of the utility model;

[0017] Figure 5 It is a side view of the film sealing instrument provided by the embodiment of the utility model in a closed state of the door plate;

[0018] Figure 6 It is a side view of a film sealing instrument provided by an embodiment of the utility model in a door panel open state.

[0019] In the figure:

[0020] 100, housing; 110, bottom plate;

[0021] 200, carrier assembly; 210, power mechanism; 211, driving member; 212, transmission assembly; 2121, transmission belt; 2122, fixing member; 2123, transmission wheel; 220, carrier; 230, guide wheel; 240, guide limit assembly; 241, slide rail; 242, slide seat;

[0022] 300, door body assembly; 310, door panel; 320, reset member; 330, fixing seat;

[0023] 400. Induction parts. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0025] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0028] Specific combination Figures 1 to 6As shown, the film sealing instrument is used to complete the film sealing of multi-well plates, PCR plates, deep-well plates and micro-well plates, etc. In this embodiment, the film sealing of multi-well plates is taken as an example. Specifically, the film sealing instrument includes a shell 100, a carrier assembly 200 and a door assembly 300. A film sealing cavity with an opening is arranged inside the shell 100, and the opening of the film sealing cavity is arranged on the side wall of the shell 100; the carrier assembly 200 includes a power mechanism 210 and a carrier 220. The power mechanism 210 is arranged on the bottom plate 110 of the film sealing cavity. The power mechanism 210 is transmission-connected with the carrier 220. Along the X direction, the power mechanism 210 drives the carrier 220 to extend through the opening or retract into the film sealing cavity; the door assembly 300 includes a door panel 310 and a reset member 320. The door panel 310 is rotationally connected to the bottom plate 110 corresponding to the opening, and the reset member 320 is arranged between the bottom plate 110 and the door panel 310; when the carrier 220 extends out of the film sealing cavity, the carrier 220 pushes the door panel 310 to open, and when the carrier 220 retracts into the film sealing cavity, the reset member 320 drives the door panel 310 to close automatically.

[0029] Since the door panel 310 is rotatably connected to the bottom plate 110, and a reset member 320 is provided between the door panel 310 and the bottom plate 110; meanwhile, the carrier 220 is movably provided on the bottom plate 110 along the X direction. Before film sealing, the power mechanism 210 starts to drive the carrier 220 to move in the direction close to the opening, and at the same time, the carrier 220 pushes the door panel 310 to rotate and open, so that the carrier 220 can extend out of the opening; after the carrier 220 extends out of the opening, the porous plate to be sealed is placed on the carrier 220; then the power mechanism 210 starts again to drive the carrier 220 to move toward the film sealing chamber, and the carrier 220 releases the thrust on the door panel 310, and at the same time, the reset member 320 drives the door panel 310 to rotate and close automatically, so as to seal the porous plate in the film sealing chamber. During the whole process, as the carrier 220 moves, the carrier 220 and the door panel 310 are linked to avoid manual opening or closing of the door panel 310, thereby improving the smoothness of film sealing and shortening the duration of the process before film sealing, thereby reducing the probability of sample loss and spatial cross-contamination caused by evaporation and leakage of sample liquid in the well plate.

[0030] In some other embodiments, the door panel 310 can be rotatably connected to the housing 100 corresponding to the opening according to actual needs, that is, the door panel 310 can be set to a top-opening type or a side-opening type.

[0031] Preferably, the reset member 320 is configured as a torsion spring, the door body assembly 300 also includes a door shaft, the door panel 310 is rotatably connected to the base plate 110 via the door shaft, the torsion spring is sleeved on the door shaft, and the torsion sections at both ends of the torsion spring are respectively fixedly disposed on the base plate 110 and the door panel 310.

[0032] Specific combination Figure 2As shown, an avoidance groove is provided at the connection between the bottom plate 110 and the door plate 310 to ensure that after the door plate 310 connected to the bottom plate 110 is completely closed, the door plate 310 is flush with the outer wall of the housing 100, thereby improving the overall aesthetics of the film sealing instrument. The door body assembly 300 also includes two fixing seats 330, which are arranged on the bottom plate 110 and are respectively located on both sides of the avoidance groove, and the two ends of the door shaft are respectively rotatably connected to the two fixing seats 330, and the door plate 310 is transmission-connected to the door shaft. The torsion sections at both ends of the torsion spring are recorded as the first torsion section and the second torsion section. The torsion spring is sleeved behind the door shaft, the first torsion section is fixedly arranged on the side wall of the avoidance groove, and the second torsion section is fixedly arranged on the door panel 310; when the carrier 220 pushes the door panel 310 to be opened, the torsion spring is subjected to force as a whole, and the second torsion section rotates in the direction away from the first torsion section; during the retraction of the carrier 220, the thrust of the carrier assembly 200 on the door panel 310 is reduced, that is, the torsion force on the torsion spring is reduced, and the second torsion section rotates autonomously in the direction close to the first torsion section, thereby driving the door panel 310 to rotate in the direction close to the opening; when the carrier 220 is retracted into the film sealing cavity, the door panel 310 is no longer subjected to the thrust of the carrier assembly 200, the torsion spring returns to its original state, and the door panel 310 is completely closed with the cooperation of the first torsion section and the second torsion section, so as to facilitate the subsequent film sealing of the porous plate.

[0033] In some other embodiments, the reset member 320 can also be configured as a tension spring and / or a rubber strip, and the tension spring or rubber strip is disposed between the outer wall of the housing 100 and the door panel 310. When the carrier 220 pushes the door panel 310 to be opened, the tension spring and / or the rubber strip is stretched by force; when the carrier 220 retracts, the thrust applied to the tension spring and / or the rubber strip decreases, and the tension spring and / or the rubber strip gradually retracts to drive the door panel 310 to rotate toward the opening, until the carrier 220 retracts into the sealing film cavity, and the tension spring and / or the rubber strip returns to its original state and drives the door panel 310 to be completely closed.

[0034] Preferably, the carrier assembly 200 further includes a guide wheel 230, which is rotatably connected to a side of the carrier 220 close to the door panel 310. When the carrier 220 extends out of the opening, the guide wheel 230 is used to contact and rotate with the door panel 310, thereby pushing the door panel 310 to open, making the door panel 310 opening process smoother, and avoiding the situation where the carrier 220 directly abuts against the door panel 310 and damages the door panel 310 or the carrier 220. In order to ensure the rotation synchronization of various parts of the door panel 310, a plurality of guide wheels 230 are arranged at intervals on a side of the carrier 220 close to the door panel 310 along the width direction of the carrier 220; in this embodiment, two guide wheels 230 are arranged at intervals on a side of the carrier 220 close to the door panel 310, and the two guide wheels 230 are arranged symmetrically about the center line of the carrier 220.

[0035] Preferably, the carrier assembly 200 further includes a guide limiter assembly 240, through which the carrier 220 is slidably connected to the bottom plate 110. The guide limiter assembly 240 is provided to facilitate the movement of the carrier 220 along the X direction. At the same time, during the movement of the carrier 220 along the X direction, the guide limiter assembly 240 guides the carrier 220, guiding the carrier 220 to always move along a predetermined route to ensure the overall use effect of the film sealing instrument; when the carrier 220 is located in the film sealing chamber, the guide limiter assembly 240 limits the carrier 220 to prevent the carrier 220 from shifting along its width direction, thereby preventing the porous plate placed on the carrier 220 from shaking and tipping over, thereby ensuring the film sealing effect of the porous plate. Specifically, the guide limiter assembly 240 includes a slide rail 241 and a slide seat 242, one of which is disposed on the carrier 220, and the other is disposed on the bottom plate 110, the slide rail 241 and the slide seat 242 are slidably connected, and the slide rail 241 extends along the X direction. In this embodiment, the slide seat 242 is disposed on the bottom plate 110, and the slide rail 241 is disposed on the carrier 220; two groups of guide limiter assemblies 240 are disposed at intervals along the width direction of the carrier 220, and the two groups of guide limiter assemblies 240 are symmetrically disposed about the center line of the carrier 220, further improving the convenience and stability of the carrier 220 when moving along the X direction.

[0036] Preferably, the power mechanism 210 includes a driving member 211 and a transmission assembly 212. The driving member 211 is disposed on the bottom plate 110, and the transmission assembly 212 is transmission-connected between the driving member 211 and the carrier 220. The driving member 211 is configured as a forward and reverse motor, which provides power to the carrier 220 during the process of extending or retracting the carrier 220 into the film sealing chamber; the forward and reverse motor is forwardly rotated or reversely rotated to drive the carrier 220 to reciprocate along the X direction, thereby ensuring the smoothness and stability of the reciprocating motion of the carrier 220; the transmission assembly 212 is transmission-connected between the driving member 211 and the carrier 220, so that the driving member 211 drives the carrier 220 to reciprocate while avoiding interference due to the direct connection between the carrier 220 and the driving member 211.

[0037] In this embodiment, the transmission assembly 212 includes a transmission belt 2121, a fixing member 2122 and two transmission wheels 2123, wherein one transmission wheel 2123 is fixedly connected to the output shaft of the forward and reverse motor, and the other transmission wheel 2123 is rotatably connected to the end surface of the carrier 220 close to the bottom plate 110, and the two transmission wheels 2123 are connected to each other through the transmission belt 2121, and the fixing member 2122 is connected between the carrier 220 and the transmission belt 2121. Figure 1As shown, the opening of the film sealing cavity is arranged on the front wall of the housing 100, and the driving member 211 is arranged on the bottom plate 110 opposite to the opening to ensure that the carrier 220 reciprocates along the X direction; in order to ensure that the stroke of the carrier 220 meets the actual needs, the driving member 211 is arranged close to the rear wall of the housing 100, and the motor shaft of the forward and reverse motor is arranged perpendicular to the bottom plate 110, so as to ensure the normal operation of the carrier 220 while reducing the probability of interference between the forward and reverse motor and the carrier 220. When the forward and reverse motor rotates forward, the transmission wheel 2123 connected to the motor shaft is driven to rotate forward, and under the transmission action of the transmission belt 2121, the other transmission wheel 2123 rotates forward synchronously; in this process, the fixing member 2122 connected to the transmission belt 2121 moves in the direction close to the opening, thereby driving the carrier 220 connected to the fixing member 2122 to move in the direction close to the opening and extend out of the opening. After the porous plate to be sealed is placed on the carrier 220, the forward and reverse motors reverse, thereby driving the transmission wheel 2123 connected to the motor shaft to rotate in the opposite direction, and under the transmission action of the transmission belt 2121, the other transmission wheel 2123 rotates in the opposite direction synchronously; in this process, the fixing piece 2122 connected to the transmission belt 2121 moves in the direction away from the outlet, thereby driving the carrier 220 connected to the fixing piece 2122 to move in the direction away from the outlet, until the carrier 220 is completely located in the film sealing chamber, and the forward and reverse motors stop running to ensure the stability of the carrier 220 in the film sealing chamber, so as to facilitate the subsequent film sealing of the porous plate.

[0038] In this embodiment, a chain drive may be used instead of a belt drive. Specifically, the drive belt 2121 is replaced by a drive chain, and the two drive wheels 2123 are replaced by sprockets, one of which is fixedly connected to the output shaft of the forward and reverse motor, and the other sprocket is rotatably connected to the end surface of the carrier 220 close to the bottom plate 110, the two sprockets are connected by a drive chain, and the fixing member 2122 is connected between the carrier 220 and the drive chain.

[0039] In some other embodiments, the transmission assembly 212 includes a gear (not shown in the figure) and a rack (not shown in the figure), the gear is fixedly connected to the output end of the driving member 211, the rack is arranged on the end surface of the carrier 220 close to the bottom plate 110, and the gear is meshed with the rack. Specifically, the driving member 211 is also configured as a forward and reverse motor, the output shaft of the driving motor is arranged vertically to the bottom plate 110, the gear is fixedly sleeved on the output shaft, and the gear is meshed with the rack; as the forward and reverse motor rotates forward or reverse, the meshing position of the gear and the rack changes, thereby driving the carrier 220 connected to the rack to extend or retract into the sealing film cavity.

[0040] In some other embodiments, the power mechanism 210 can be directly set as a push rod motor. Specifically, the push rod motor is set on the bottom plate 110, and the output shaft of the push rod motor is set parallel to the bottom plate 110 and is in transmission connection with the carrier 220. When the push rod motor is started and the output shaft is extended, the carrier 220 is driven to extend out of the opening; when the output shaft is retracted, the carrier 220 is driven to retract into the film sealing cavity.

[0041] Preferably, the film sealing instrument further includes a sensing component 400 and a control component. The sensing component 400 is disposed on the bottom plate 110 to sense the relative position of the carrier 220 , and the control component is control-connected to both the sensing component 400 and the power mechanism 210 .

[0042] Specific combination Figure 3 As shown, the sensing element 400 is disposed on the bottom plate 110 and is disposed close to the rear wall of the housing 100. When the power mechanism 210 drives the carrier 220 to retract into the film sealing cavity, after the sensing element 400 senses the carrier 220, the sensing element 400 sends a stop signal to the control element, and the control element receives the stop information and controls the power mechanism 210 to stop running, thereby ensuring that the carrier 220 is fully retracted into the film sealing cavity and preventing the carrier 220 from retracting too much and interfering with the rear wall of the housing 100.

[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A film sealing instrument, characterized in that: include: A housing (100) is provided with a sealing cavity having an opening therein, wherein the opening of the sealing cavity is in communication with a side wall of the housing (100); A carrier assembly (200) comprises a power mechanism (210) and a carrier (220), wherein the power mechanism (210) is arranged on the bottom plate (110) of the film sealing cavity, and the power mechanism (210) is transmission-connected with the carrier (220), and along the X direction, the power mechanism (210) drives the carrier (220) to extend through the opening or retract into the film sealing cavity; The door body assembly (300) comprises a door panel (310) and a reset member (320), wherein the door panel (310) is rotatably connected to the bottom panel (110) corresponding to the opening, and the reset member (320) is arranged between the bottom panel (110) and the door panel (310); When the carrier (220) extends out of the film sealing cavity, the carrier (220) pushes the door panel (310) to open; when the carrier (220) retracts into the film sealing cavity, the reset member (320) drives the door panel (310) to close automatically.

2. The film sealing instrument according to claim 1, characterized in that: The reset member (320) is configured as a torsion spring, and the door body assembly (300) further includes a door shaft, and the door panel (310) is rotatably connected to the base plate (110) via the door shaft, the torsion spring is sleeved on the door shaft, and the torsion sections at both ends of the torsion spring are fixedly disposed on the base plate (110) and the door panel (310), respectively.

3. The film sealing instrument according to claim 1, characterized in that: The carrier assembly (200) further comprises a guide wheel (230), wherein the guide wheel (230) is rotatably connected to a side of the carrier (220) close to the door panel (310).

4. The film sealing instrument according to claim 1, characterized in that: The carrier assembly (200) further comprises a guide and limit assembly (240), and the carrier (220) is slidably connected to the base plate (110) via the guide and limit assembly (240).

5. The film sealing instrument according to claim 4, characterized in that: The guide and limiting assembly (240) comprises a slide rail (241) and a slide seat (242); one of the slide rail (241) and the slide seat (242) is arranged on the carrier (220), and the other is arranged on the bottom plate (110); the slide rail (241) and the slide seat (242) are slidably connected, and the slide rail (241) extends along the X direction.

6. The film sealing instrument according to claim 4, characterized in that: The power mechanism (210) comprises a driving member (211) and a transmission assembly (212); the driving member (211) is arranged on the bottom plate (110); and the transmission assembly (212) is transmission-connected between the driving member (211) and the carrier (220).

7. The film sealing instrument according to claim 6, characterized in that: The transmission assembly (212) comprises a transmission belt (2121), a fixing member (2122) and two transmission wheels (2123), wherein one of the transmission wheels (2123) is fixedly connected to the output end of the driving member (211), and the other transmission wheel (2123) is rotatably connected to the end surface of the carrier (220) close to the bottom plate (110), the two transmission wheels (2123) are transmission-connected via the transmission belt (2121), and the fixing member (2122) is connected between the carrier (220) and the transmission belt (2121).

8. The film sealing instrument according to claim 6, characterized in that: The transmission assembly (212) comprises a gear and a rack, the gear being fixedly connected to the output end of the driving member (211), the rack being arranged on the end surface of the carrier (220) close to the bottom plate (110), and the gear being meshed with the rack.

9. The film sealing instrument according to claim 4, characterized in that: The power mechanism (210) comprises a push rod motor, which is arranged on the base plate (110). The output shaft of the push rod motor is arranged parallel to the base plate (110) and is transmission-connected to the carrier (220).

10. The film sealing instrument according to claim 1, characterized in that: The film sealing instrument further comprises a sensing component (400) and a control component. The sensing component (400) is arranged on the bottom plate (110) to sense the relative position of the carrier (220). The control component is control-connected to both the sensing component (400) and the power mechanism (210).

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