Test tube film sealing equipment

Abstract

The invention discloses test tube film sealing equipment, and relates to the technical field of test tube detection.The test tube film sealing equipment comprises a machine body, a film feeding device, a film cutting device and a film sealing device, the machine body is provided with a film feeding station, a film cutting station and a film sealing station which are arranged at intervals, and the film sealing station is used for containing test tubes; the film feeding device is arranged at the film feeding station and is used for conveying a film material to the film cutting station; the film cutting device is arranged at the film cutting station and is used for receiving the film material conveyed by the film conveying device and cutting the film material into a film sheet with a preset length; the film sealing device comprises a driving mechanism and a film sealing mechanism, the driving mechanism is arranged on the machine body, the film sealing mechanism is movably arranged under the driving of the driving mechanism so as to have a movement stroke between the film cutting station and the film sealing station, and the film sealing mechanism is used for transferring the film from the film cutting device to the film sealing station and enabling the film to be heat-sealed at the opening of the test tube. According to the technical scheme, automatic film sealing of the test tubes is achieved, and the test tube sealing and storing cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of test tube detection, and particularly to a test tube film sealing device. Background Art

[0002] In the related art, test tube specimens need to be sealed and preserved by sealing the openings of the test tubes. Currently, the test tubes are often sealed by covering them with test tube caps, resulting in a relatively high cost for maintaining the seal of the test tubes. Summary of the Invention

[0003] The main object of the present invention is to provide a test tube film sealing device, aiming to achieve automatic film sealing of test tubes, which is beneficial to reducing the cost of sealing and preserving test tubes.

[0004] To achieve the above object, the test tube film sealing device proposed by the present invention includes:

[0005] A machine body having a film feeding station, a film cutting station, and a film sealing station arranged at intervals, and the film sealing station is used for placing test tubes;

[0006] A film feeding device arranged at the film feeding station for conveying a film material to the film cutting station;

[0007] A film cutting device arranged at the film cutting station for receiving the film material conveyed by the film feeding device and cutting the film material into film pieces with a preset length; and

[0008] A film sealing device including a driving mechanism and a film sealing mechanism. The driving mechanism is arranged on the machine body, and the film sealing mechanism is movably arranged under the drive of the driving mechanism to have a moving stroke between the film cutting station and the film sealing station. The film sealing mechanism is used for transferring the film piece from the film cutting device to the film sealing station and heat-sealing the film piece to the opening of the test tube.

[0009] In one embodiment, the film feeding device includes:

[0010] A film unwinding mechanism arranged at the film feeding station, including a rotating shaft for winding the film material. The rotating shaft is rotatably arranged for driving the film material to rotate to unwind the film material; and

[0011] A conveying mechanism arranged downstream of the film unwinding mechanism for receiving the film material and guiding the film material to move the preset length towards the film cutting device.

[0012] In one embodiment, the conveying mechanism includes:

[0013] A clamping assembly movably arranged between the film unwinding mechanism and the film cutting device to have a closed state for clamping the film material and an open state for releasing the film material; and

[0014] A conveying assembly is provided on the body and is in driving connection with the clamping assembly. The conveying assembly is used to drive the clamping assembly in the closed state to move towards the film cutting device, and is used to drive the clamping assembly in the open state to move away from the film cutting device.

[0015] In one embodiment, the clamping assembly includes:

[0016] A seat body structure is in driving connection with the conveying assembly to move towards or away from the film cutting device under the drive of the conveying assembly;

[0017] A support structure is provided on the seat body structure. A support surface is formed on the top side of the support structure, and the film material can be placed on the support surface;

[0018] A film pressing structure is movably arranged relative to the seat body structure. At least part of the film pressing structure is arranged above the support structure, and a film pressing surface is formed towards one side of the support structure; and

[0019] A driving structure is provided on the seat body structure and is in driving connection with the film pressing structure, and is used to drive the film pressing structure to move towards or away from the support structure so that the clamping assembly clamps or releases the film material.

[0020] In one embodiment, the film pressing structure includes:

[0021] A mounting part, at least part of which is exposed on the opposite sides of the support structure and is in driving connection with the driving structure to be movably arranged relative to the support structure under the drive of the driving structure; and

[0022] A film pressing part, the middle of which is arranged above the support structure. The opposite ends of the film pressing part are respectively a connection end and a locking / releasing end. The connection end and the locking / releasing end respectively extend to the opposite sides of the support structure to be arranged opposite to the mounting part;

[0023] Wherein, the connection end is rotationally connected to the mounting part so that the film pressing part can swing relative to the support structure, and the locking / releasing end is used for locking / releasing cooperation with the mounting part.

[0024] In one embodiment, a locking hole is provided on the mounting part towards the locking / releasing end, and a locking / releasing part is provided on the locking / releasing end. The locking / releasing part penetrates through the locking / releasing end and is telescopically arranged towards the locking hole to lock or release the locking hole;

[0025] And / or, the film pressing part includes a fixed block and a pressing block, the middle part of the fixed block is arranged above the supporting structure, the opposite ends of the fixed block are respectively the connecting end and the locking and releasing end, the pressing block is arranged in the middle part of the fixed block and is located on the side of the fixed block facing the supporting structure, and is elastically connected to the fixed block.

[0026] In one embodiment, the film cutting device comprises:

[0027] A lower cutting knife mechanism is arranged at the film cutting station, a lower cutting knife is arranged on the top side of the lower cutting knife mechanism, and the film material can be placed on the top surface of the lower cutting knife; and

[0028] The upper cutter mechanism is arranged at one side of the lower cutter mechanism, and comprises an upper cutter which can be raised and lowered relative to the lower cutter, and the projection of the upper cutter on the top surface of the lower cutter is arranged adjacent to the lower cutter.

[0029] In one embodiment, the film cutting device also includes a top film mechanism, which is located below the upper cutter and has a top block facing the upper cutter. The top block can be raised and lowered relative to the lower cutter to have an initial position adjacent to the lower cutter and a cutting position away from the lower cutter.

[0030] In one embodiment, the top block is provided with a guide hole, and the top membrane mechanism further comprises:

[0031] A base, the base being spaced below the upper cutter;

[0032] a guide shaft, the guide shaft being arranged on a side of the base facing the upper cutter, extending in an up-down direction, and passing through the guide hole; and

[0033] An elastic member is sleeved on the guide shaft and connected between the top block and the base so that the top block has a tendency to return to the initial position.

[0034] In one embodiment, the film sealing mechanism comprises:

[0035] A connecting assembly, drivingly connected to the driving mechanism;

[0036] a hot pressing assembly, arranged at one side of the connecting assembly, so as to reciprocate between the film cutting station and the film sealing station under the drive of the connecting assembly, a hot pressing surface being formed at the bottom of the hot pressing assembly, and an adsorption channel being formed in the hot pressing assembly and being connected to the hot pressing surface; and

[0037] The adsorption component is arranged on one side of the hot pressing component and penetrates the adsorption channel, and is used to make the diaphragm adsorbed on the hot pressing surface so that the diaphragm and the hot pressing component move synchronously.

[0038] In one embodiment, the hot pressing assembly includes an induction coil and an induction pressing plate arranged in sequence from top to bottom, the hot pressing surface is formed on a side of the induction pressing plate away from the induction coil, the induction coil is penetrated by a first through hole, the induction pressing plate is penetrated by a second through hole, and the adsorption assembly can be penetrated through the first through hole and the second through hole;

[0039] And / or, the adsorption component includes a driving member and an adsorption member, the driving member is arranged on one side of the hot pressing component, and the adsorption member is transmission-connected to the driving member for being driven by the driving member to move through the adsorption channel.

[0040] In one embodiment, the film sealing device further comprises a film pressing mechanism, which is transmission-connected to the driving mechanism and is configured to move toward the film sealing station under the drive of the driving mechanism to press the film sheet heat-sealed to the opening of the test tube into a preset shape.

[0041] In one embodiment, the film pressing mechanism comprises:

[0042] A connecting seat, which is transmission-connected to the driving mechanism and movably disposed above the film sealing station;

[0043] A guide rod is disposed on the bottom side of the connecting seat and extends in the up-down direction; and

[0044] A pressing sleeve is movably arranged below the connecting seat, the pressing sleeve is sleeved on the guide rod on one side facing the connecting seat and is elastically connected to the connecting seat, and a film pressing groove is arranged on the side of the pressing sleeve away from the connecting seat.

[0045] In one embodiment, the cross-sectional area of ​​the lamination groove gradually decreases in a direction away from the groove opening of the lamination groove.

[0046] The test tube film sealing device of the technical solution of the present invention comprises a machine body and a film feeding device, a film cutting device and a film sealing device arranged on the machine body, wherein the film sealing station is used for placing the test tube to be sealed; wherein the film feeding device can feed the film material to the film cutting device, so that the film cutting device can cut the film material it feeds into film sheets with a preset length, and then the film sealing device can transfer the film sheet from the film cutting device to the test tube to be sealed through the film sealing mechanism, so that the film sheet can be heat-sealed to the opening of the test tube, thereby realizing automatic film sealing of the test tube, thereby realizing the sealed preservation of the test tube by means of test tube film sealing, which is beneficial to reducing the cost of sealed preservation of the test tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0048] Figure 1 Schematic structural diagram of an embodiment of the test tube sealing film device provided by the present invention;

[0049] Figure 2 For Figure 1 Side view of the test tube sealing film device in

[0050] Figure 3 For Figure 1 Top view of the test tube sealing film device in

[0051] Figure 4 For Figure 1 Cross-sectional view of the test tube sealing film device in

[0052] Figure 5 For Figure 4 Enlarged view of part A in

[0053] Figure 6 For Figure 1 Partial structural schematic diagram of the test tube sealing film device in

[0054] Figure 7 For Figure 6 Cross-sectional view of the partial structure of the test tube sealing film device in

[0055] Figure 8 For Figure 6 Cross-sectional view of another partial structure of the test tube sealing film device in

[0056] Figure 9 For Figure 8 Another cross-sectional view of another partial structure of the test tube sealing film device in

[0057] Figure 10 For Figure 1 Another cross-sectional view of the test tube sealing film device in

[0058] Explanation of the reference numerals in the drawings:

[0059] 100. Test tube film sealing device; 10. Body; 20. Film feeding device; 21. Unwinding mechanism; 211. Rotating shaft; 22. Conveying mechanism; 221. Clamping assembly; 2211. Seat body structure; 2212. Support structure; 2213. Film pressing structure; 22131. Installation part; 22131a. Lock hole; 22132. Film pressing part; 22132a. Fixed block; 22132b. Pressing block; 22133. Lock release part; 22133a. Handle part; 22133b. Connecting part; 2214. Driving structure; 222. Conveying component; 30. Film cutting device; 31. Lower cutting knife mechanism; 311. Lower cutting knife; 32. Upper cutting knife mechanism; 321. Fixed part; 322. Upper cutting knife; 33. Film pushing mechanism; 331. Pushing block; 332. Base; 333. Guide shaft; 334. Elastic part; 40. Film sealing device; 41. Driving mechanism; 42. Film sealing mechanism; 421. Connecting component; 422. Hot pressing component; 422a. Adsorption channel; 4221. Induction coil; 4222. Induction pressing plate; 423. Adsorption component; 4231. Driving part; 4232. Adsorbing part; 43. Film pressing mechanism; 431. Connecting seat; 432. Guide rod; 433. Pressing sleeve; 200. Test tube.

[0060] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0061] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0062] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0063] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, such descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0064] In the related art, test tube specimens need to be sealed and stored by sealing the openings of the test tubes. Currently, the test tubes are often sealed by covering them with test tube caps, resulting in a relatively high cost for maintaining the seal of the test tubes.

[0065] The present invention provides a test tube film sealing device 100.

[0066] Please refer to Figures 1 to 10 , in an embodiment of the present invention, the test tube film sealing device 100 includes a machine body 10, a film feeding device 20, a film cutting device 30, and a film sealing device 40. The machine body 10 has a film feeding station, a film cutting station, and a film sealing station that are spaced apart. The film sealing station is used to place the test tube 200; the film feeding device 20 is disposed at the film feeding station and is used to convey the film material to the film cutting station; the film cutting device 30 is disposed at the film cutting station and is used to receive the film material conveyed by the film feeding device 20 and cut the film material into film pieces with a preset length; the film sealing device 40 includes a driving mechanism 41 and a film sealing mechanism 42. The driving mechanism 41 is disposed on the machine body 10, and the film sealing mechanism 42 is movably disposed under the drive of the driving mechanism 41 to have a moving stroke between the film cutting station and the film sealing station. The film sealing mechanism 42 is used to transfer the film piece from the film cutting device 30 to the film sealing station and heat-seal the film piece to the opening of the test tube 200.

[0067] Among them, the film feeding device 20 can be used to place the roll of film material, and the roll of film material can be rotatably arranged on the film feeding device 20, and the free end of the roll of film material can be moved to the film cutting device 30 by a preset length under the traction of the film feeding device 20. After receiving the film material of the preset length, the film cutting device 30 can cut the film material to cut off the part of the film material with the preset length from the film material roll to obtain a film sheet with a preset length. In some embodiments, the film feeding device 20 may include an unwinding mechanism 21 for placing the film material roll, and also include a conveying mechanism 22 for pulling the free end of the film material roll. The unwinding mechanism 21 can drive the film material to rotate, thereby realizing the unwinding function of the film material roll, so as to quantitatively release the film material with a preset length; the conveying mechanism 22 is arranged downstream of the unwinding mechanism 21, and is used to receive and pull the film material of the preset length to move to the film cutting device 30.

[0068] Specifically in this embodiment, the machine body 10 includes a substrate, a film cutting device 30 is provided on one side of the substrate, a reeling mechanism 21 is provided on the side of the substrate away from the film cutting device 30, and a conveying mechanism 22 is provided on the side of the substrate on which the film cutting device 30 is provided, and the reeling mechanism 21 and the conveying mechanism 22 are arranged relative to each other in the normal direction of the substrate surface, and an escape space for the film material to pass through is also provided on the substrate, so that the free end of the film material roll on the reeling mechanism 21 can pass through the escape space and lead out to the conveying mechanism 22, and then be transmitted toward the film cutting device 20 through the conveying mechanism 22. In this way, the space on both sides of the substrate can be fully utilized to arrange the film feeding device 20. Of course, the technical solution of the present invention is not limited to this. In other embodiments, the reeling mechanism 21 and the conveying mechanism 22 can also be arranged side by side on the same side of the substrate, or arranged on the machine body 10 in other arrangement orientations, which is not limited here.

[0069] The film sealing device 40 can drive the film sealing mechanism 42 to move between the film cutting station and the film sealing station through the driving mechanism 41, so as to transfer the film from the film cutting device 30 to the opening of the test tube 200 to be sealed, so that the film can be heat-sealed to the opening of the test tube 200 by the film sealing mechanism 42, thereby realizing automatic film sealing of the test tube 200. Compared with the solution of sealing the test tube 200 by covering the test tube 200 with a test tube cap, the method of sealing the test tube 200 by using a film material to achieve the sealed storage of the test tube 200 is conducive to reducing the cost of sealing and storing the test tube 200.

[0070] Among them, the driving mechanism 41 may include a first driving component and a second driving component. The first driving component is in transmission connection with the film sealing mechanism 42 and is used to drive the film sealing mechanism 42 to reciprocate horizontally between the film cutting station and the film sealing station, so as to transfer the previous film sheet from the film cutting device 30 at the film cutting station to the film sealing station, so as to align the film sheet with the opening of the test tube 200. And it can move back to the film cutting station from the film sealing device 40 at the film sealing station to align with the next film sheet on the film cutting device 20, waiting to transfer the next film sheet. The first driving component can be configured as a linear driving mechanism such as a telescopic cylinder or a linear motor, or can be configured as a rotary driving mechanism such as a rotary motor, which is not limited herein; the second driving component is arranged on the machine body 10 and is in transmission connection with the first driving component, and is used to drive the first driving component to reciprocate vertically, so that the film sealing mechanism 42 can move up and down relative to the test tube 200 at the film cutting station or the film sealing station, so that the film sealing mechanism 42 can move downwards towards the film cutting device 30 to suck the film sheet, and then move the film sealing mechanism 42 away from the film cutting device 30 upwards to take the film sheet away from the film cutting device 30, or drive the film sealing mechanism 42 to move the film material towards the opening of the test tube 200 to place and heat-seal the film sheet on the opening of the test tube 200, and then move the film sealing mechanism 42 away from the test tube 200 upwards, so as to facilitate its movement back to the film cutting station. The second driving component can be configured as a linear driving mechanism 41 such as a lead screw nut assembly, a telescopic cylinder or a linear motor, which is not limited herein.

[0071] Of course, the technical solution of the present invention is not limited to this. In other embodiments, the first driving component can also be used to drive the film sealing mechanism 42 to move up and down vertically, and the second driving component is used to drive the first driving component to drive the film sealing mechanism 42 to reciprocate horizontally between the film cutting station and the film sealing station. The specific implementation manner can be set according to actual needs.

[0072] Further, in some embodiments, a transfer mechanism is provided on the machine body 10 of the test tube film sealing device 100 and can support the test tube 200 through the transfer mechanism. The transfer mechanism can be arranged relative to the film sealing station and is used to transfer the test tube 200 to the film sealing station of the machine body 10. The transfer mechanism can be specifically configured as a rotary transfer mechanism such as an annular carrier or a linear transfer mechanism such as a transmission line, which is not limited herein. Further, there can be several test tube placement positions on the transfer mechanism, and each test tube placement position can be used to place a test tube 200. The transfer mechanism can transfer several test tubes 200 to the film sealing station in sequence, so as to realize continuous automatic film sealing of multiple test tubes 200. Of course, the test tube film sealing device 100 can also be provided with a test tube 200 carrier at the film sealing station to place the test tube 200 to be sealed, which is not limited herein.

[0073] Please refer to Figures 1 to 3In an embodiment of the present invention, the film feeding device 20 includes a unwinding mechanism 21 and a conveying mechanism 22. The unwinding mechanism 21 is arranged at the film feeding station, and includes a rotating shaft 211 for winding the film material. The rotating shaft 211 can be rotatably arranged to drive the film material to rotate so as to unwind the film material; the conveying mechanism 22 is arranged downstream of the unwinding mechanism 21, and is used to receive the film material and guide the film material to move a preset length toward the film cutting device 30.

[0074] In this embodiment, the unwinding mechanism 21 is used to place the film material roll, and the conveying mechanism 22 can pull the end of the film material roll to move, so as to provide a film material roll with a preset length to the film cutting device 30. Specifically in this embodiment, the unwinding mechanism 21 includes a positioning disk and a pressing disk that are relatively arranged, and the positioning disk and the pressing disk are both coaxially arranged with the rotating shaft 211. The film material roll can be sleeved on the rotating shaft 211 and placed on the positioning disk, and then can be pressed on the inner ring of the film material roll by the pressing disk, so that the film material can be locked to the unwinding mechanism 21. In this way, when the rotating shaft 211 rotates, it can drive the film material roll wound thereon to rotate synchronously, so as to realize the unwinding function of the film material.

[0075] In some embodiments, the rotating shaft 211 can be connected to a damper via a coupling. With such a configuration, the damping force applied by the damper can prevent the film material from continuing to rotate forward due to inertia when it is necessary to stop rotating, thereby improving the movement stability of the film material and facilitating the control of the unwinding length of the film material.

[0076] See also Figures 1 to 3 as well as Figure 6 In an embodiment of the present invention, the conveying mechanism 22 includes a clamping component 221 and a conveying component 222. The clamping component 221 can be opened and closed between the unwinding mechanism 21 and the film cutting device 30 to have a closed state for clamping the film material and an open state for releasing the film material; the conveying component 222 is arranged on the body 10 and is transmission-connected with the clamping component 221. The conveying component 222 is used to drive the clamping component 221 in the closed state to move toward the film cutting device 30, and to drive the clamping component 221 in the open state to move away from the film cutting device 30.

[0077] The conveying component 222 can be specifically configured as a rotary transfer mechanism such as a ring stage, etc., or as a linear transfer mechanism such as a transmission line, etc. The specific implementation method can be set according to the arrangement position between the unwinding mechanism 21 and the film cutting device 30, which is not limited here. By setting the conveying component 222, the clamping component 221 can be moved toward or away from the film cutting device 30; when the clamping component 221 in the closed state moves toward the film cutting device 30, the clamping component 221 can clamp the film material and move it toward the film cutting device 30 by a preset length. When the clamping component 221 in the open state moves away from the film cutting device 30, the clamping component 221 can detach from the film material and reset to its initial position, waiting to clamp the next section of the film material and move it toward the film cutting device 30, thereby driving the film material to move intermittently toward the film cutting device 30.

[0078] Of course, the technical solution of the present invention is not limited thereto. In other embodiments, the conveying mechanism 22 may also include a conveying component 222 and a transfer component connected to the conveying component 222, wherein the transfer component may include a vacuum adsorption structure for adsorbing or releasing the film material, and the conveying component 222 is used to drive the transfer component adsorbed with the film material to move toward the film cutting device 30, and to drive the transfer component that releases the film material to move away from the film cutting device 30, so as to drive the film material to intermittently move toward the film cutting device 30. The specific implementation method can be set according to actual needs.

[0079] See also Figures 1 to 3 as well as Figures 6 to 9 In an embodiment of the present invention, the clamping assembly 221 includes a seat structure 2211, a support structure 2212, a film pressing structure 2213 and a driving structure 2214. The seat structure 2211 is transmission-connected to the conveying assembly 222 so as to move toward or away from the film cutting device 30 under the drive of the conveying assembly 222; the support structure 2212 is arranged on the seat structure 2211, and a supporting surface is formed on the top side of the support structure 2212, and the film material can be placed on the supporting surface; the film pressing structure 2213 is movably arranged relative to the seat structure 2211, at least part of the film pressing structure 2213 is arranged above the support structure 2212, and a film pressing surface is formed toward one side of the support structure 2212; the driving structure 2214 is arranged on the seat structure 2211, and is transmission-connected to the film pressing structure 2213, and is used to drive the film pressing structure 2213 to move toward or away from the support structure 2212, so that the clamping assembly 221 clamps or releases the film material.

[0080] The driving structure 2214 can be set as a linear driving structure such as a telescopic cylinder, a linear motor, etc., which is not limited here. Driven by the driving structure 2214, the film pressing structure 2213 can move up and down relative to the supporting structure 2212, so that the film pressing surface and the supporting surface are close to each other and respectively abut against the upper and lower surfaces of the film material, so as to realize the clamping function of the clamping component 221 on the film material, so that the clamping component 221 can drive the film material to move toward the film cutting device 30, so that the film material of a preset length enters the film cutting device 30.

[0081] Specifically, when the driving structure 2214 drives the film pressing structure 2213 to press the film material against the supporting structure 2212 to achieve stable clamping of the film material, the clamping component 221 can be driven by the conveying component 222 to move a certain distance toward the film cutting device 30, thereby feeding the film material of a preset length into the film cutting device 30; then, the driving structure 2214 can drive the film pressing surface of the film pressing structure 2213 to move away from the supporting structure 2212. At this time, the clamping component 221 can release the film material and move relative to the film material, so as to be reset to the initial position under the drive of the conveying component 222, so as to clamp and convey the next section of the film material to be cut.

[0082] See also Figures 4 to 9 In an embodiment of the present invention, the film pressing structure 2213 includes a mounting portion 22131 and a film pressing portion 22132, wherein at least a portion of the mounting portion 22131 is exposed on opposite sides of the supporting structure 2212 and is transmission-connected to the driving structure 2214 so as to be movably arranged relative to the supporting structure 2212 under the drive of the driving structure 2214; the middle portion of the film pressing portion 22132 is arranged above the supporting structure 2212, and the opposite ends of the film pressing portion 22132 are respectively a connecting end and a locking-release end, which extend to opposite sides of the supporting structure 2212 respectively so as to be arranged opposite to the mounting portion 22131; wherein the connecting end is rotationally connected to the mounting portion 22131 so that the film pressing portion 22132 can be swingably arranged relative to the supporting structure 2212, and the locking-release end is used for locking and releasing cooperation with the mounting portion 22131.

[0083] Among them, the connecting end of the film pressing part 22132 can be rotatably connected to the mounting part 22131 through but not limited to structures such as pins and rotating shafts, so that the locking and releasing end of the film pressing part 22132 can be swung toward the mounting part 22131 to cooperate with the locking and releasing of the mounting part 22131. The locking and releasing end of the film pressing part 22132 can also be released from the mounting part 22131 and swung in a direction away from the mounting part 22131, so that the middle part of the film pressing part 22132 moves away from the supporting structure 2212, thereby facilitating the removal or replacement of the film material on the supporting structure 2212.

[0084] See also Figures 4 to 9, in an embodiment of the present invention, the installation part 22131 is provided with a lock hole 22131a towards the lock release end, and the lock release end is provided with a lock release member 22133. The lock release member 22133 penetrates through the lock release end and is telescopically arranged towards the lock hole 22131a to lock or release the lock hole 22131a.

[0085] Among them, the lock release member 22133 may include a handle part 22133a and a connecting part 22133b. The connecting part 22133b penetrates through the lock release end of the film pressing part 22132 and is movably matched with the lock release end. The handle part 22133a is exposed outside the lock release end for easy user grip operation. Specifically, the user can hold the handle part 22133a of the lock release member 22133 to drive the entire lock release member 22133 to move relative to the film pressing part 22132, so that the connecting part 22133b of the lock release member 22133 enters or exits the lock hole on the installation part 22131, thereby realizing the locking or releasing of the film pressing part 22132.

[0086] In a feasible implementation manner, the connecting part 22133b of the lock release member 22133 may be threadedly matched with a screw hole on the lock release end of the film pressing part 22132. When the lock release member 22133 rotates forward or backward relative to the lock release end of the film pressing part 22132 under an external force, the connecting part 22133b of the lock release member 22133 can correspondingly enter or exit the lock hole on the installation part 22131. Of course, in other embodiments, the connecting part 22133b of the lock release member 22133 may also be pluggably matched with a through hole on the lock release end of the film pressing part 22132 to correspondingly insert or exit the lock hole on the installation part 22131. The specific implementation manner can be set according to actual needs and is not limited herein.

[0087] Of course, the technical solution of the present invention is not limited to this. In other embodiments, the lock release ends of the installation part 22131 and the film pressing part 22132 may also but are not limited to be detachably connected by magnetic attraction cooperation, snap connection cooperation, etc. The specific implementation manner can be set according to actual needs.

[0088] Please refer to Figures 7 to 9 , in an embodiment of the present invention, the film pressing part 22132 includes a fixed block 22132a and a pressing block 22132b. The middle of the fixed block 22132a is spaced above the support structure 2212. The opposite ends of the fixed block 22132a are respectively a connection end and a lock release end. The pressing block 22132b is arranged in the middle of the fixed block 22132a and is located on the side of the fixed block 22132a facing the support structure 2212 and is elastically connected to the fixed block 22132a.

[0089] By elastically connecting the pressing block 22132b to the middle part of the fixed block 22132a, when the film pressing part 22132 presses the film material, the bottom wall of the pressing block 22132b can be elastically abutted against the upper surface of the film material, which is beneficial for the clamping assembly 221 of the conveying mechanism 22 to stably clamp and limit the film material, so as to ensure the clamping effect of the clamping assembly 221.

[0090] Specifically, in this embodiment, a groove may be provided on one side of the middle part of the fixed block 22132a facing the support structure 2212. The pressing block 22132b is movably arranged in the groove, and an elastic member 334 may be connected between the pressing block 22132b and the bottom wall of the groove, so that the pressing block 22132b can enter the groove when being pressed by an external force, compress the elastic member 334 to store elastic potential energy, and when the pressing block 22132b stops being affected by the external force, the elastic potential energy is released by the elastic member 334 to push the pressing block 22132b to move out of the groove.

[0091] Please refer to Figure 6 , in the embodiment of the present invention, the film cutting device 30 includes a lower cutting knife mechanism 31 and an upper cutting knife mechanism 32. The lower cutting knife mechanism 31 is arranged at the film cutting station, and a lower cutting knife 311 is provided on the top side of the lower cutting knife mechanism 31. The film material can be placed on the top surface of the lower cutting knife 311; the upper cutting knife mechanism 32 is arranged on one side of the lower cutting knife mechanism 31 and includes an upper cutting knife 322 that can be lifted and lowered relative to the lower cutting knife 311. The projection of the upper cutting knife 322 on the top surface of the lower cutting knife 311 is arranged adjacent to the lower cutting knife 311.

[0092] In this embodiment, the lower cutting knife 311 can be fixedly arranged relative to the machine body 10. By making the upper cutting knife 322 liftable and lowerable relative to the lower cutting knife 311, the film material can be cut by the relative movement between the upper cutting knife 322 and the lower cutting knife 311.

[0093] Specifically, in a feasible implementation manner, the upper cutting knife mechanism 32 includes a fixing member 321 and an upper cutting knife 322. The fixing member 321 is arranged upstream of the lower cutting knife mechanism 31 and can be lifted and lowered relative to the lower cutting knife mechanism 31; the upper cutting knife 322 has a sheet structure, which extends in the vertical direction and is connected to one side of the fixing member 321 facing the lower cutting knife mechanism 31. Among them, the bottom end of the upper cutting knife 322 can protrude partially from the bottom side of the fixing member 321. The bottom end of the upper cutting knife 322 is used to move towards the film material under the drive of the fixing member 321 to cooperate with the lower cutting knife mechanism 31 to cut the film material.

[0094] Of course, in other embodiments, the upper cutting knife 32 can also be arranged in the form of a cutting knife block, and the projection of the cutting knife block on the top surface of the lower cutting knife 311 is adjacent to the lower cutting knife 311. The specific implementation manner can be set according to actual needs and will not be limited here.

[0095] Please refer toFigures 1 to 5 In an embodiment of the present invention, the film cutting device 30 further includes a film lifting mechanism 33. The film lifting mechanism 33 is located below the upper cutting knife 322 and is provided with a lifting block 331 facing the upper cutting knife 322. The lifting block 331 is arranged to be liftable relative to the lower cutting knife 311, so as to have an initial position adjacent to the lower cutting knife 311 and a cutting position away from the lower cutting knife 311.

[0096] To prevent the film material from being cut off by the downward movement of the upper cutting knife 322 and then warping downward, which may cause subsequent conveyance obstruction, and at the same time to prevent the film material from retracting, the present application is provided with a film lifting mechanism 33 below the upper cutting knife 322. Among them, a lifting block 331 opposite to the upper cutting knife 322 is provided on the top side of the film lifting mechanism 33. When the lifting block 331 is in the initial position, it can place the film material together with the lower cutting knife 311. After the upper cutting knife 322 moves downward and abuts against the upper surface of the film material on the lifting block 331, the upper cutting knife 322, the film material in contact with the upper cutting knife 322, and the lifting block 331 can move downward synchronously until the lifting block 331 moves to a position away from the lower cutting knife 311, so that the upper cutting knife 322 and the lower cutting knife 311 can cooperate to cut the film material; after the film material is cut short, the upper cutting knife 322 moves upward, and the lifting block 331 can drive the film material placed thereon to move upward synchronously until the lifting block 331 resets to the initial position, thereby lifting the cut film material.

[0097] Specifically, in an embodiment of the present invention, the lifting block 331 is provided with a guiding hole. The film lifting mechanism 33 further includes a base 332, a guiding shaft 333, and an elastic member 334. The base 332 is spaced below the upper cutting knife 322; the guiding shaft 333 is provided on the side of the base 332 facing the upper cutting knife 322, extends in the vertical direction, and passes through the guiding hole; the elastic member 334 is sleeved on the guiding shaft 333 and is connected between the lifting block 331 and the base 332, so that the lifting block 331 has a tendency to reset to the initial position.

[0098] Among them, the guiding shaft 333 can guide the lifting block 331 to improve the movement stability of the lifting block 331. The elastic member 334 can be configured as a spring. By sleeving the spring on the guiding shaft 333, the guiding shaft 333 can be used to position the spring to improve the position stability of the spring.

[0099] Specifically, when the lifting block 331 moves from its initial position toward the cutting position under the drive of the upper cutting knife 322, the elastic member 334 can be compressed to accumulate elastic potential energy; when the upper cutting knife 322 moves upward, the elastic member 334 can release the elastic potential energy and drive the lifting block 331 to move back toward the initial position. After the lifting block 331 of the film lifting mechanism 33 resets, the film material can move further downward toward the lower cutting knife mechanism 31 under the drive of the film feeding device 20, waiting for the film cutting device 30 to cut the next section of the film material.

[0100] Please refer to Figures 1 to 5 , in an embodiment of the present invention, the film sealing mechanism 42 includes a connection component 421, a hot pressing component 422, and an adsorption component 423. The connection component 421 is in transmission connection with the driving mechanism 41; the hot pressing component 422 is arranged on one side of the connection component 421 to reciprocate between the film cutting station and the film sealing station under the drive of the connection component 421. A hot pressing surface is formed at the bottom of the hot pressing component 422, and an adsorption channel 422a communicating with the hot pressing surface is formed in the hot pressing component 422; the adsorption component 423 is arranged on one side of the hot pressing component 422 and penetrates through the adsorption channel 422a for adsorbing the film sheet on the hot pressing surface so that the film sheet moves synchronously with the hot pressing component 422.

[0101] Among them, the hot pressing component 422 has a hot pressing surface for abutting against the film material so that the film material can be pressed and heat-sealed at the opening of the test tube 200 after being transferred to the opening of the test tube 200. Specifically, when the film material contacts the opening end of the test tube 200 and is heated by the hot pressing component 422 to a certain temperature, the film material can be melted with the end surface of the opening of the test tube 200, so that the film material is sealed at the opening of the test tube 200, realizing the sealed storage of the specimen in the test tube 200.

[0102] It should be noted that while the film sealing mechanism 42 sucks the film sheet from the film cutting device 30 and transfers the film sheet to the opening of the test tube 200 at the film sealing station for heat sealing, the clamping component 221 of the conveying mechanism 22 can release the film material currently clamped by it and move away from the film cutting device 30 to the initial position to clamp the next section of the film material to be cut and move a certain distance towards the film cutting device 30. Such a setting can make the heat sealing process of the film sheet by the film sealing device 40 and the feeding process of the film material by the film feeding device 20 proceed synchronously, which is beneficial to improving the film sealing efficiency of the test tube film sealing device 100.

[0103] Please refer to Figure 4 and Figure 5 , in an embodiment of the present invention, the hot pressing component 422 includes an induction coil 4221 and an induction pressing plate 4222 arranged in sequence from top to bottom. A hot pressing surface is formed on the side of the induction pressing plate 4222 facing away from the induction coil 4221. The induction coil 4221 is provided with a first through hole, and the induction pressing plate 4222 is provided with a second through hole. The adsorption component 423 can penetrate through the first through hole and the second through hole.

[0104] In this embodiment, the side of the induction pressing plate 4222 facing away from the induction coil 4221 is used to abut against the film material. When the film material is transferred to the opening end of the test tube 200, the film material can be heated by using the electromagnetic induction phenomenon through the alternating magnetic field generated by the induction pressing plate 4222 so that the film material can be heat-sealed at the opening of the test tube 200.

[0105] Of course, the technical solution of the present invention is not limited to this. In other embodiments, the heat pressing assembly 422 can also generate heat through the thermal effect of the current, and transfer heat to the film material through the heat pressing surface that is in contact with the film material to achieve the effect of heating the film material. Of course, the film material can also be heated in other ways. The specific implementation method can be set according to actual needs and is not limited here.

[0106] See also Figure 4 and Figure 5 In an embodiment of the present invention, the adsorption component 423 includes a moving part 4231 and an adsorption part 4232. The moving part 4231 is arranged on one side of the hot pressing component 422. The adsorption part 4232 is transmission-connected to the moving part 4231 and is used to move through the adsorption channel 422a under the drive of the moving part 4231.

[0107] With such arrangement, the adsorption member 4232 can be extended and retracted relative to the hot pressing surface of the hot pressing assembly 422 under the drive of the moving member 4231 , so as to control the film sealing mechanism 42 to adsorb or release the film material. Specifically, when it is necessary to move the film material from the film cutting station to the film sealing station, the hot pressing assembly 422 and the film sheet at the film cutting device 30 can be aligned and matched and abutted against each other, and the adsorption component 4232 can be controlled to extend toward the hot pressing surface of the hot pressing assembly 422 through the adsorption channel 422a, so that the adsorption end of the adsorption component 4232 is close to the hot pressing surface. The adsorption component 4232 can, but is not limited to, generate negative pressure at the adsorption channel 422a through a vacuum generator, so that the film material can be adsorbed on the hot pressing surface, so that the film sealing mechanism 42 can drive the film to move synchronously; when the film is transferred to the opening of the test tube 200 at the film sealing station by the film sealing mechanism 42, the adsorption component 4232 can be controlled to retract away from the hot pressing surface of the hot pressing assembly 422 through the adsorption channel 422a, so that the film stops being adsorbed on the hot pressing surface, thereby realizing the film sealing mechanism 42 The function of transferring the film.

[0108] In some embodiments, a linear bearing may be further provided in the adsorption channel 422 a , and the linear bearing is provided between the inner wall of the adsorption channel 422 a and the outer wall of the adsorption member 4232 , which is beneficial to improving the movement stability of the adsorption member 4232 .

[0109] See also Figure 4 and Figure 10 In the embodiment of the present invention, the film sealing device 40 further includes a film pressing mechanism 43, which is in transmission connection with the driving mechanism 41 and is used to move toward the film sealing station under the drive of the driving mechanism 41 to press the film sheet heat-sealed at the opening of the test tube 200 into a preset shape. In this way, the film pressing structure 2213 can be used to shape the film sheet heat-sealed at the opening of the test tube 200.

[0110] Specifically in this embodiment, a film pressing groove may be provided on the side of the film pressing mechanism 43 facing the test tube 200, so as to control the shape of the film after being shaped by the film pressing mechanism 43 by designing the shape of the film pressing groove. In some embodiments, the projection of the shape of the film after being shaped on the plane where the open end of the test tube 200 is located is smaller than the projection before the shape is shaped, so as to help reduce the space occupied by the film, and the shaped film may be in a conical shape, a cylindrical shape, etc., which is not limited here.

[0111] See also Figure 4 and Figure 10 In an embodiment of the present invention, the film pressing mechanism 43 includes a connecting seat 431, a guide rod 432 and a pressing sleeve 433. The connecting seat 431 is transmission-connected to the driving mechanism 41 and is movably arranged above the film sealing station; the guide rod 432 is arranged on the bottom side of the connecting seat 431 and extends in the up and down directions; the pressing sleeve 433 is movably arranged below the connecting seat 431, and the pressing sleeve 433 is sleeved on the guide rod 432 on the side facing the connecting seat 431 and is elastically connected to the connecting seat 431, and a film pressing groove is provided on the side of the pressing sleeve 433 facing away from the connecting seat 431.

[0112] Among them, a spring can be provided between the pressing sleeve 433 and the connecting seat 431, and the spring is sleeved on the guide rod 432. The two ends of the spring are respectively connected to the pressing sleeve 433 and the connecting seat 431, thereby realizing an elastic connection between the pressing sleeve 433 and the connecting seat 431, and the positioning effect of the spring by the guide rod 432 can ensure the position stability of the spring.

[0113] Specifically, when the connecting seat 431 moves toward the test tube 200 driven by the driving structure 2214, the bottom end of the pressing sleeve 433 first makes preliminary contact with the open end of the test tube 200 and the membrane heat-sealed to the test tube 200; then, as the connecting seat 431 moves further toward the test tube 200, the pressing sleeve 433 can slide relative to the guide rod 432 under the push of the test tube 200. At this time, the elastic member 334 is compressed and can apply an elastic force toward the direction of the test tube 200 to the pressing sleeve 433, so that the pressing sleeve 433 can have a good crimping fit with the test tube 200 and the membrane material, so that the pressing sleeve 433 can shape the membrane material heat-sealed to the opening of the test tube 200 into a preset shape.

[0114] When the connecting seat 431 moves away from the test tube 200 driven by the driving structure 2214, the compressed elastic member 334 can release elastic potential energy and drive the pressing sleeve 433 to slide and reset relative to the guide rod 432 to wait for the next diaphragm to be crimped and shaped.

[0115] See also Figure 10, in an embodiment of the present invention, the cross-sectional area of the film pressing groove gradually decreases in the direction away from the notch of the film pressing groove. With such a setting, the diaphragm can be shaped into a conical structure by the film pressing mechanism 43 to reduce its projected area on the plane where the open end of the test tube 200 is located.

[0116] In an embodiment of the present invention, the driving mechanism 41 can be a rotary driving mechanism 41, and the film sealing mechanism 42 and the film pressing mechanism 43 are arranged at intervals on the circumference of the rotary driving mechanism 41. The rotary driving mechanism 41 can simultaneously drive the film sealing mechanism 42 and the film pressing mechanism 43 to rotate synchronously by a certain angle.

[0117] Specifically, when the rotary driving mechanism 41 drives the film sealing mechanism 42 to move from the film cutting station to the film sealing station, the film pressing mechanism 43 can move out of the film sealing station synchronously. At this time, the film sealing mechanism 42 can heat-seal the film material to the open end of the test tube 200 at the film sealing station; after the film sealing mechanism 42 completes the heat-sealing step for the test tube 200, the rotary driving mechanism 41 can drive the film sealing mechanism 42 to move back to the film cutting station to wait for the next film sheet to be heat-sealed on the transfer film cutting device 30. At this time, the film pressing mechanism 43 can move into the film sealing station synchronously to press and shape the film sheet that has completed heat-sealing.

[0118] With such a setting, the driving of the film sealing mechanism 42 and the film pressing mechanism 43 can be achieved by the same driving mechanism 41, which is beneficial to reducing motion waste. Moreover, compared with the technical solution of setting different driving mechanisms 41 to drive the film sealing mechanism 42 and the film pressing mechanism 43 respectively, the setting cost and occupied volume of the driving mechanism 41 can also be reduced.

[0119] The above is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A test tube sealing device, characterized in that: include: The machine body has a film feeding station, a film cutting station and a film sealing station arranged at intervals, and the film sealing station is used to place the test tube; A film feeding device, provided at the film feeding station, for feeding the film material to the film cutting station; A film cutting device, arranged at the film cutting station, for receiving the film material delivered by the film delivery device and cutting the film material into film sheets with a preset length; as well as The film sealing device comprises a driving mechanism and a film sealing mechanism, wherein the driving mechanism is arranged on the machine body, and the film sealing mechanism can be movably arranged under the drive of the driving mechanism so as to have a movable stroke between the film cutting station and the film sealing station, and the film sealing mechanism is used to transfer the film from the film cutting device to the film sealing station and heat-seal the film to the opening of the test tube.

2. The test tube sealing device according to claim 1, characterized in that: The film feeding device comprises: an unwinding mechanism, disposed at the film feeding station, comprising a rotating shaft for winding the film material, wherein the rotating shaft is rotatably arranged to drive the film material to rotate so as to unwind the film material; and The conveying mechanism is arranged downstream of the unwinding mechanism, and is used for receiving the film material and guiding the film material to move toward the film cutting device by the preset length.

3. The test tube sealing device according to claim 2, characterized in that: The conveying mechanism comprises: A clamping assembly, which can be opened and closed between the unwinding mechanism and the film cutting device, so as to have a closed state for clamping the film material and an open state for releasing the film material; and A conveying assembly is arranged on the machine body and is transmission-connected with the clamping assembly. The conveying assembly is used to drive the clamping assembly in the closed state to move toward the film cutting device, and to drive the clamping assembly in the open state to move away from the film cutting device.

4. The test tube sealing device according to claim 3, characterized in that: The clamping assembly comprises: A seat structure, drivingly connected to the conveying assembly, so as to move toward or away from the film cutting device under the drive of the conveying assembly; A support structure is provided on the base structure, a support surface is formed on the top side of the support structure, and the membrane material can be placed on the support surface; a film pressing structure, movably arranged relative to the base structure, wherein at least a portion of the film pressing structure is arranged above the support structure and a film pressing surface is formed on a side facing the support structure; and The driving structure is arranged on the base structure and is drivingly connected with the film pressing structure, and is used for driving the film pressing structure to move toward or away from the supporting structure so that the clamping assembly clamps or releases the film material.

5. The test tube sealing device according to claim 4, characterized in that: The film pressing structure comprises: A mounting portion, at least part of which is exposed on opposite sides of the supporting structure and is drivingly connected to the driving structure so as to be movably arranged relative to the supporting structure under the driving of the driving structure; and A film pressing part, wherein the middle part of the film pressing part is arranged above the supporting structure, and the two opposite ends of the film pressing part are a connecting end and a locking end, respectively, and the connecting end and the locking end extend to the opposite sides of the supporting structure, so as to be arranged opposite to the mounting part; The connecting end is rotatably connected to the mounting portion so that the film pressing portion can be swingably arranged relative to the supporting structure, and the locking and releasing end is used for locking and releasing cooperation with the mounting portion.

6. The test tube sealing device according to claim 5, characterized in that: The mounting portion is provided with a locking hole toward the locking and releasing end, and the locking and releasing end is provided with a locking and releasing member, the locking and releasing member is penetrated through the locking and releasing end and is telescopically arranged toward the locking hole to lock or release in the locking hole; And / or, the film pressing part includes a fixed block and a pressing block, the middle part of the fixed block is arranged above the supporting structure, the opposite ends of the fixed block are respectively the connecting end and the locking and releasing end, the pressing block is arranged in the middle part of the fixed block and is located on the side of the fixed block facing the supporting structure, and is elastically connected to the fixed block.

7. The test tube sealing device according to any one of claims 1 to 6, characterized in that: The film cutting device comprises: A lower cutting knife mechanism is arranged at the film cutting station, a lower cutting knife is arranged on the top side of the lower cutting knife mechanism, and the film material can be placed on the top surface of the lower cutting knife; and The upper cutter mechanism is arranged at one side of the lower cutter mechanism, and comprises an upper cutter which can be raised and lowered relative to the lower cutter, and the projection of the upper cutter on the top surface of the lower cutter is arranged adjacent to the lower cutter.

8. The test tube sealing device according to claim 7, characterized in that: The film cutting device also includes a top film mechanism, which is located below the upper cutter and has a top block facing the upper cutter. The top block can be raised and lowered relative to the lower cutter to have an initial position adjacent to the lower cutter and a cutting position away from the lower cutter.

9. The test tube sealing device according to claim 8, characterized in that: The top block is provided with a guide hole, and the top membrane mechanism further comprises: A base, the base being spaced below the upper cutter; a guide shaft, the guide shaft being arranged on a side of the base facing the upper cutter, extending in an up-down direction, and passing through the guide hole; and An elastic member is sleeved on the guide shaft and connected between the top block and the base so that the top block has a tendency to return to the initial position.

10. The test tube sealing device according to any one of claims 1 to 6, characterized in that: The film sealing mechanism comprises: A connecting assembly, drivingly connected to the driving mechanism; a hot pressing assembly, arranged at one side of the connecting assembly, so as to reciprocate between the film cutting station and the film sealing station under the drive of the connecting assembly, a hot pressing surface being formed at the bottom of the hot pressing assembly, and an adsorption channel being formed in the hot pressing assembly and being connected to the hot pressing surface; and The adsorption component is arranged on one side of the hot pressing component and penetrates the adsorption channel, and is used to make the diaphragm adsorbed on the hot pressing surface so that the diaphragm and the hot pressing component move synchronously.

11. The test tube sealing device according to claim 10, characterized in that: The hot pressing assembly comprises an induction coil and an induction pressing plate arranged in sequence from top to bottom, the hot pressing surface is formed on a side of the induction pressing plate away from the induction coil, the induction coil is penetrated by a first through hole, the induction pressing plate is penetrated by a second through hole, and the adsorption assembly can be penetrated through the first through hole and the second through hole; And / or, the adsorption component includes a driving member and an adsorption member, the driving member is arranged on one side of the hot pressing component, and the adsorption member is transmission-connected to the driving member for being driven by the driving member to move through the adsorption channel.

12. The test tube sealing device according to any one of claims 1 to 6, characterized in that: The film sealing device also includes a film pressing mechanism, which is transmission-connected to the driving mechanism and is used to move toward the film sealing station under the drive of the driving mechanism to press the film sheet heat-sealed to the opening of the test tube into a preset shape.

13. The test tube sealing device according to claim 12, characterized in that: The film pressing mechanism comprises: A connecting seat, which is transmission-connected to the driving mechanism and movably disposed above the film sealing station; A guide rod is disposed on the bottom side of the connecting seat and extends in the up-down direction; and A pressing sleeve is movably arranged below the connecting seat, the pressing sleeve is sleeved on the guide rod on one side facing the connecting seat and is elastically connected to the connecting seat, and a film pressing groove is arranged on the side of the pressing sleeve away from the connecting seat.

14. The test tube sealing device according to claim 13, characterized in that: The cross-sectional area of ​​the lamination groove gradually decreases in a direction away from the groove opening of the lamination groove.

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