Test tube heat sealing system and heat sealing method

Abstract

The invention relates to the technical field of test tube fusion sealing, and discloses a test tube fusion sealing system and a fusion sealing method.The test tube fusion sealing system comprises a rack, a heating device, an adsorption rotating device, a three-dimensional moving device and a clamping device, and the heating device is connected with the rack and used for heating a test tube; the adsorption rotating device is connected with the rack and is used for adsorbing test tubes and driving the test tubes to rotate; the three-dimensional moving device is connected with the rack and is provided with a moving end capable of moving relative to the rack; the clamping device is connected with the moving end and used for clamping or releasing the test tube. And the test tube fusion sealing system can automatically perform fusion sealing on the test tubes.

Description

Technical Field

[0001] The invention relates to the technical field of test tube fusion sealing, and in particular to a test tube fusion sealing system and a fusion sealing method. Background Art

[0002] Test tube sealing is a technology that uses high temperature to melt and seal the material at the mouth of the test tube under vacuum or protective atmosphere.

[0003] Currently, when the laboratory seals the test tube, it starts the flame spray gun and uses the flame spray gun to spray flames to evenly heat the test tube mouth, and rotates the test tube until the material reaches the melting point, melts the material at the tube mouth and presses it together to achieve sealing. After the sealing is completed, the heat source is turned off and the test tube is allowed to cool naturally.

[0004] At present, laboratories generally use manual control to seal test tubes. Affected by the technical level and experience of the operators, the quality of the sealing may be inconsistent, resulting in poor sealing effects. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and to provide a test tube sealing system and a test tube sealing method to solve the technical problem that the test tube needs to be sealed manually in the prior art.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a test tube sealing system, comprising: frame; A heating device, connected to the frame, for heating the test tube; An adsorption and rotation device, connected to the frame, used for adsorbing the test tube and driving the test tube to rotate; a three-dimensional moving device connected to the frame and having a moving end capable of moving relative to the frame; and A clamping device is connected to the moving end and is used to clamp or release the test tube.

[0007] In one embodiment, the clamping device comprises: A rotating assembly, comprising a plurality of rolling elements, wherein the plurality of rolling elements are rotatably and slidably connected to the moving end, and the plurality of rolling elements are combined to form a clamping area with adjustable size; A driving assembly is connected to a plurality of the rolling elements and is used to adjust the size of the clamping area.

[0008] In one embodiment, the clamping device further comprises a clamping seat, and the clamping seat is provided with a channel for inserting the test tube; The plurality of rolling elements are rotatably and slidably connected to the clamping seat, and are connected to the moving end via the clamping seat; The rotating assembly further comprises a first driving member, which is connected to the clamping seat and to any one or more of the rolling members, and is used to drive the rolling members to rotate.

[0009] In one embodiment, the clamping seat is provided with a plurality of first sliding grooves along the radial direction of the channel; The driving assembly includes a rotating seat and a second driving member. The rotating seat is rotatably connected to the clamping seat. The rotating seat is provided with a plurality of second slide grooves relative to the plurality of first slide grooves. The plurality of second slide grooves are distributed at intervals along the circumference of the channel. The setting direction of the second slide grooves intersects with the setting direction of the first slide grooves. The rolling member is slidably and rotatably inserted in the second slide grooves. The second driving member is connected to the clamping seat and the rotating seat for driving the rotating seat to rotate.

[0010] In one embodiment, the adsorption rotation device comprises: An adsorption assembly connected to the frame and having an adsorption end for adsorbing the test tube and an exhaust end for exhausting gas; A driving assembly, the driving assembly is connected to the frame and the adsorption assembly, and is used to drive the adsorption assembly to rotate; and The air pressure component includes an air pipe, an air extraction unit and a measuring sensor. The air inlet end of the air pipe is connected to the exhaust end of the adsorption component, the air inlet end of the air extraction unit is connected to the air outlet end of the air pipe, and the measuring sensor is connected to the air pipe for detecting the vacuum value in the test tube through the air pipe and the adsorption component.

[0011] In a second aspect, the present invention further provides a sealing method, using the above-mentioned test tube sealing system, comprising the following steps: The adsorption and rotation device adsorbs the test tube and drives the test tube to rotate; The heating device heats the test tube; The clamping device clamps the test tube, and the clamping device and the adsorption rotating device jointly stretch the test tube; The heating device heats the stretched portion of the test tube; The clamping device drives part of the test tubes to separate from the heating device and disconnects the clamped test tubes from the test tubes adsorbed by the adsorption rotating device.

[0012] In one embodiment, after the step in which the clamping device drives part of the test tubes to separate from the heating device and disconnects the clamped test tubes from the test tubes adsorbed by the adsorption rotating device, the step further includes: The clamping device clamps the fused test tube part and moves it to the heating device; The heating device heats the fractured portion of the test tube.

[0013] In one embodiment, in the step of heating the fractured portion of the test tube by a heating device: The clamping device clamps the fused test tube and drives the test tube to rotate at the same time.

[0014] In one embodiment, in the step where the clamping device clamps the test tube and the clamping device and the adsorption rotating device jointly stretch the test tube: The clamping device and the adsorption rotating device stretch the test tube multiple times at intervals.

[0015] In one embodiment, in the step of multiple stretching of the test tube by the clamping device and the adsorption rotating device at intervals: The clamping device and the adsorption rotating device stretch the test tube for the first time, and during the first stretching process, the heating device stops heating the test tube; The clamping device and the adsorption rotating device stretch the test tube for the second time; The clamping device and the adsorption rotating device stretch the test tube for the third time, and during the second and third stretching processes, the heating device heats the test tube.

[0016] Compared with the prior art, the test tube sealing system and the test tube sealing method provided by the present invention, when sealing the test tube, the test tube is moved to the adsorption rotating device, the adsorption rotating device adsorbs the test tube and drives the test tube to rotate; the heating device heats the middle part of the test tube; after the test tube is heated and softened, the clamping device clamps the test tube, and driven by the three-dimensional moving device, drives the clamping device to stretch the test tube; the heating device heats the stretched part of the test tube; the clamping device drives part of the test tube to separate from the heating device and disconnects the clamped test tube from the test tube adsorbed by the adsorption rotating device, thereby realizing the sealing of the test tube. In the process of sealing the test tube, there is no need to manually seal the test tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a test tube sealing system provided by an embodiment of the present invention; Figure 2 It is a structural schematic diagram of part of the structure in the test tube sealing system provided in one embodiment of the invention; Figure 3 yes Figure 2 A local enlarged schematic diagram of the middle A; Figure 4 It is a structural schematic diagram of part of the structure in the test tube sealing system provided in one embodiment of the invention; Figure 5 yes Figure 4 A partial enlarged schematic diagram of point B in the middle; Figure 6It is a structural schematic diagram of a partial structure of a test tube sealing system provided by an embodiment of the present invention; Figure 7 yes Figure 6 A partial enlarged schematic diagram of point C in the middle; Figure 8 It is a structural schematic diagram of part of the structure of a test tube sealing system provided in one embodiment of the present invention; Fig. 9 It is a schematic structural diagram of a clamping device and a test tube in a test tube sealing system provided by an embodiment of the present invention; Fig.10 is an exploded view of a clamping device and a test tube in a test tube sealing system provided by an embodiment of the present invention; Fig.11 is an exploded view of a clamping device and a test tube in a test tube sealing system provided by an embodiment of the present invention; Fig.12 It is a structural schematic diagram of a part of the structure of a clamping device in a test tube sealing system provided in one embodiment of the present invention; Fig.13 It is a structural schematic diagram of a part of the structure of a clamping device in a test tube sealing system provided in one embodiment of the present invention; Fig.14 It is a structural schematic diagram of a part of the structure of a clamping device in a test tube sealing system provided in one embodiment of the present invention; Fig.15 It is a structural schematic diagram of part of the structure of a test tube sealing system provided by an embodiment of the present invention.

[0018] Description of reference numerals: Rack 1; Heating device 2; injection assembly 21; air flow assembly 22; nozzle 221; exhaust pipe 222; Adsorption rotating device 3; adsorption component 31; suction cup 311; magnetic fluid seal 312; drive structure 32; air pressure component 33; air pipe 331; air extraction unit 332; measurement sensor 333; Three-dimensional mobile device 4; Clamping device 5; rotating assembly 51; rolling member 511; first driving member 512; first rotating shaft 513; sliding frame 514; second rotating shaft 515; driving assembly 52; rotating seat 521; second slide groove 521a; second driving member 522; clamping seat 53; channel 53a; first slide groove 53b; Feeding device 6; electric clamping claw 61; baffle 62; connecting arm 63; photoelectric sensor 64; Carrying device 7; Material hole 7a; Test tube 8; Emergency warning lights 9. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] In order to solve the technical problem that the test tube 8 needs to be sealed manually in the prior art, the present invention provides a test tube sealing system and a sealing method, which can seal the test tube 8 without manual operation.

[0021] It should be noted that the test tube sealing system and the sealing method described in the present invention are used for but not limited to the sealing of test tube 8. For the convenience of explanation, in the present invention, only the application of the sealing system and the sealing method to the sealing of test tube 8 is used as an example for explanation. The principles of applying the test tube sealing system and the sealing method to other types of equipment are essentially the same as those applied to the sealing of test tube 8, and will not be elaborated here.

[0022] See also Figures 1 to 15 , Figure 1 It is a structural schematic diagram of a test tube sealing system in an embodiment of the present invention. The test tube sealing system includes a frame 1, a heating device 2, an adsorption and rotation device 3, a three-dimensional moving device 4 and a clamping device 5. The heating device 2 is connected to the frame 1 and is used to heat the test tube 8; the adsorption and rotation device 3 is connected to the frame 1 and is used to adsorb the test tube 8 and can drive the test tube 8 to rotate; the three-dimensional moving device 4 is connected to the frame 1 and has a moving end that can move relative to the frame 1; the clamping device 5 is connected to the moving end and is used to clamp or release the test tube 8.

[0023] Specifically, when the test tube 8 is melt-sealed, the test tube 8 is moved to the adsorption rotating device 3, the adsorption rotating device 3 adsorbs the test tube 8 and drives the test tube 8 to rotate; the heating device 2 heats the middle part of the test tube 8; after the test tube 8 is heated and softened, the clamping device 5 clamps the test tube 8, and under the drive of the three-dimensional moving device 4, drives the clamping device 5 to stretch the test tube 8; the heating device 2 heats the stretched part of the test tube 8; the clamping device 5 drives part of the test tube 8 to separate from the heating device 2 and disconnects the clamped test tube 8 from the test tube 8 adsorbed by the adsorption rotating device 3, thereby realizing the melt-sealing of the test tube 8. In the process of melt-sealing the test tube 8, there is no need to manually melt-seal the test tube 8.

[0024] In order to control the ejection and closing of the flame, in one embodiment, the heating device 2 includes a jet assembly 21 and an airflow assembly 22. The jet assembly 21 is connected to the frame 1 and is used to eject laser and / or flame to heat the test tube 8. The airflow assembly 22 includes a nozzle 221, which is connected to the frame 1 and has an air jet flow channel for air flow to pass through. The extension direction of the air jet flow channel intersects with the ejection direction of the jet assembly 21. It should be understood that the jet assembly 21 can be a hydrogen-oxygen flame heating device, or a laser heating device, etc.

[0025] Start the injection assembly 21, which can spray flame to seal the test tube 8. When it is necessary to block the flame, start the nozzle 221, and the blowing end of the nozzle 221 blows out an airflow, and the blown airflow intersects with the flame injection direction of the injection assembly 21. The injection direction of the flame is changed by the blown airflow, so that the direction of the flame injection deviates from the sealing area of ​​the test tube 8, and the injection direction of the flame can be changed when the flame is not needed; when it is necessary to seal the test tube 8, close the nozzle 221, and the nozzle 221 stops spraying airflow, so that the flame injected by the injection assembly 21 can contact the test tube 8 for sealing.

[0026] It should be understood that the gas source may be a gas supply pipe 331 , an air compressor, etc.

[0027] It should be understood that the nozzle 221 can be of various shapes and structures. Specifically, in one embodiment, the blowing end of the nozzle 221 is flat, and the blowing direction of the blowing end of the nozzle 221 is perpendicular to the flame spraying direction of the spray assembly 21.

[0028] In this embodiment, the nozzle 221 is flat, so that the airflow will be pressurized when it is ejected from the nozzle 221, forming a strong airflow to change the direction of the flame spraying. At the same time, the flat blowing end can form a flat air curtain, and the direction of the air curtain is perpendicular to the flame spraying direction, which can block and change the flame spraying direction.

[0029] In order to avoid the heat flow formed when the nozzle 221 changes the flame spraying direction and destroys the equipment, in one embodiment, the airflow component 22 also includes an exhaust pipe 222, the exhaust pipe 222 is connected to the frame 1, the exhaust pipe 222 and the nozzle 221 are arranged on both sides of the spraying component 21, and the air inlet end of the exhaust pipe 222 faces the blowing direction of the nozzle 221.

[0030] In this embodiment, the exhaust pipe 222 can receive the flame blown out by the exhaust pipe 222, can guide the heat to flow to a designated location, and can also extinguish the flame of the flame that changes direction; at the same time, the exhaust pipe 222 can conduct the heat of the flame to a distant place to prevent the heat from burning other components in the equipment.

[0031] In order to realize automatic loading, in one of the embodiments, there are two three-dimensional moving devices 4 in the test tube sealing system, and the two three-dimensional moving devices 4 are arranged on both sides of the heating device 2. The clamping device 5 is connected to the moving end of one three-dimensional moving device 4. The test tube sealing system also includes a loading device 6, which is connected to the moving end of another three-dimensional moving device 4 and is used to clamp or release the test tube 8.

[0032] By setting up a loading device 6, the loading device 6 moves to the loading area under the drive of the three-dimensional moving device 4. In the loading area, the loading device 6 clamps the test tube 8 to be sealed. The three-dimensional moving device 4 drives the loading device 6 to drive the test tube 8 to move to the adsorption rotating device 3, so that the test tube 8 is adsorbed by the adsorption rotating device 3. The loading device 6 releases the test tube 8 to be sealed, and automatic loading can be realized without manual loading.

[0033] It should be understood that the three-dimensional mobile device 4 can be a rectangular coordinate robot, a three-axis gantry mechanism, an XYZ three-axis motion platform, etc.

[0034] It should be understood that the loading device 6 can be various types of clamping claws, such as pneumatic clamping claws, driven clamping claws and hydraulic clamping claws, etc. Specifically, in one embodiment, the loading device 6 includes an electric clamping claw 61, and the fixed end of the electric clamping claw 61 is connected to the mobile end of the three-dimensional moving device 4, and the electric clamping claw 61 detects the clamping force in real time.

[0035] By setting up the electric clamping claw 61, the electric clamping claw 61 can clamp and release the test tube 8. Moreover, during the process of clamping the test tube 8, the electric clamping claw 61 can detect the clamping force applied to the test tube 8 in real time, and judge whether the test tube 8 is clamped and whether the test tube 8 is clamped firmly.

[0036] In order to prevent the flame from burning the electric clamping claw 61, in one embodiment, the loading device 6 also includes a baffle 62 and a connecting arm 63. The baffle 62 is arranged on the side of the electric clamping claw 61 facing the heating device 2. The connecting arm 63 connects the baffle 62 and the moving end of the three-dimensional moving device 4. When the electric clamping claw 61 drives the test tube 8 to move to the adsorption rotating device 3, the baffle 62 blocks the flame ejected by the heating device 2.

[0037] By setting the baffle 62, when the electric clamping claw 61 drives the test tube 8 to move to the adsorption rotating device 3, the electric clamping claw 61 is at risk of being heated by the flame sprayed by the heating device 2. In order to prevent the electric clamping claw 61 from being sprayed by the flame, a baffle 62 is set on the side of the electric clamping claw 61 facing the heating device 2. The baffle 62 can block the possible sprayed flame and prevent the flame from burning the electric clamping claw 61.

[0038] In order to extend the life of the baffle 62 , in one embodiment, the baffle 62 is located on a side of the nozzle 221 away from the injection assembly 21 .

[0039] In this embodiment, the baffle 62 only plays a role of blocking, and the flame only changes the direction of the airflow blown out by the airflow component 22, which greatly reduces the contact between the baffle 62 and the flame and prolongs the life of the baffle 62.

[0040] In order to detect the test tube 8 clamped by the electric clamping claw 61, in one embodiment, the feeding device 6 further includes a photoelectric sensor 64, which is connected to the frame 1 and is arranged on the moving path of the electric clamping claw 61. It should be understood that the photoelectric sensor 64 can be a reflective photoelectric sensor or a diffuse reflection photoelectric sensor.

[0041] By setting up the photoelectric sensor 64, when the electric clamping claw 61 drives the test tube 8 to pass through the photoelectric sensor 64, the photoelectric sensor 64 detects the position of the electric clamping claw 61 clamping the test tube 8, and determines whether the electric clamping claw 61 is clamped in place. At the same time, it detects whether the mouth of the test tube 8 is intact and free of foreign matter. It can cooperate with the electric clamping claw 61 to detect foreign matter in the process of clamping the test tube 8.

[0042] It should be understood that the photoelectric sensor 64 is electrically connected to the control module of the sealing system, and the control module of the sealing system may be a PLC, a single-chip microcomputer, or the like.

[0043] In one embodiment, the test tube sealing system further includes a carrier 7, which has a plurality of material holes 7a for carrying the test tube 8; the loading device 6 further includes a visual positioning unit (not shown in the figure), which is connected to the frame 1 and is used to position and detect the test tube 8 on the carrier 7. It should be understood that the plurality of material holes 7a can be arranged in a matrix or a circular array.

[0044] By setting up a visual positioning unit, the visual positioning unit can visually position the test tube 8 before sealing, and can identify which positions of the carrying unit are provided with the test tube 8 and which positions are not provided with the test tube 8, and can transmit the positioning information to the control module of the sealing system (not shown in the figure), and the control module controls the movement of the three-dimensional moving device 4, and the three-dimensional moving device 4 drives the electric clamping claw 61 to move, so that the electric clamping claw 61 moves to the position where the test tube 8 is provided to clamp the test tube 8, so as to avoid the electric clamping claw 61 not clamping the test tube 8, and at the same time, the carrying device 7 can be set at any position of the frame 1, and there is no need to control the electric clamping claw 61 to move in sequence by positioning in the set position of the carrying device 7; at the same time, the visual positioning unit also detects the integrity of the test tube 8, whether it is damaged, and whether the position is deviated, and at the same time detects the position of the electric clamping claw 61 clamping the test tube 8, and detects the verticality of the test tube 8 clamped by the electric clamping claw 61.

[0045] When the control module of the sealing system (not shown in the figure) determines that an error has occurred in the detection of the photoelectric sensor 64, the electric clamping claw 61 and the visual positioning unit, the emergency warning light 9 set on the control module control rack 1 will flash a red light accompanied by a buzzer sound. At this time, the actual situation on site should be observed manually. After confirming that there is no interference from objects other than the equipment, click on the screen operation interface to reset. After the reset is completed, restore the desktop and proceed to the next step.

[0046] It should be understood that the visual positioning unit may be a CCD camera or other visual sensors capable of performing recognition functions.

[0047] It should be understood that the clamping device 5 can be an electric, pneumatic or hydraulic clamping claw, etc. Specifically, in one embodiment, the clamping device 5 includes a rotating component 51 and a driving component 52. The rotating component 51 includes a plurality of rolling members 511. The plurality of rolling members 511 are rotatably and slidably connected to the moving end, and the plurality of rolling members 511 are combined to form a clamping area with adjustable size; the driving component 52 is connected to the plurality of rolling members 511 for adjusting the size of the clamping area.

[0048] When it is necessary to clamp and stretch the test tube 8 in the process of sealing by the clamping device 5, the three-dimensional moving device 4 drives the clamping device 5 to move to the bottom of the adsorption rotating device 3, and makes the multiple rolling elements 511 be sleeved on the test tube 8 to be sealed through the clamping area. When it is necessary to clamp the test tube 8, the driving component 52 drives the multiple rolling elements 511 to approach each other, and the size of the clamping area is reduced, so that the multiple rolling elements 511 clamp the test tube 8. After the rolling elements 511 clamp the test tube 8, the adsorption rotating device 3 drives the test tube 8 to rotate. At this time, since the test tube 8 abuts against the rotatable rolling elements 511, it can rotate relative to the rolling elements 511, and the circumference of the test tube 8 can be uniformly heated. At the same time, the test tube 8 in the process of sealing can be clamped. When it is necessary to stretch the test tube 8, the multiple rolling elements 511 can stretch the test tube 8 along the axial direction of the test tube 8. After the sealing of the test tube 8 is completed, the multiple rolling elements 511 are driven to move away from each other, and the size of the clamping area is increased, so that the multiple rolling elements 511 release the test tube 8.

[0049] In order to make the shape of the sealed end of the test tube 8 regular and straight after sealing, in one embodiment, the clamping device 5 also includes a clamping seat 53, and the clamping seat 53 is provided with a channel 53a for inserting the test tube 8; a plurality of rolling members 511 are rotatably and slidably connected to the clamping seat 53, and the clamping seat 53 is connected to the moving end; the rotating assembly 51 also includes a first driving member 512, the first driving member 512 is connected to the clamping seat 53, and is connected to any one or more rolling members 511, and is used to drive the rolling members 511 to rotate.

[0050] In this embodiment, when the test tube 8 is sealed, the lower section of the test tube 8 is inserted into the channel 53a and inserted into the clamping area formed by the combination of multiple rolling members 511, and the test tube 8 is clamped by the multiple rolling members 511. During the sealing process of the test tube 8 and after it is melted, the first driving member 512 is started, and the first driving member 512 drives the rolling member 511 to roll, and the rolling member 511 drives the test tube 8 to rotate. By driving the melted test tube 8 to rotate, the melted part of the test tube 8 is evenly burned by the flame, so that all circumferential surfaces of the test tube 8 can contact the flame and can be evenly heated, so that the size of the melt-sealed mouth of the formed test tube 8 is consistent; the clamping device 5 can clamp the test tube 8, the adsorption rotating device 3 drives the test tube 8 to rotate, and the test tube 8 can be driven to rotate alone.

[0051] It should be understood that the clamping seat 53 can be a shell with a hollow interior, a seat body, etc. In one embodiment, the clamping seat 53 is formed by combining two shells.

[0052] In order to achieve the rolling of the rolling element 511 and adjust the size of the clamping area formed by the multiple rolling elements 511, in one embodiment, the clamping seat 53 is provided with multiple first slide grooves 53b along the radial direction of the channel 53a; the driving assembly 52 includes a rotating seat 521 and a second driving member 522, the rotating seat 521 is rotatably connected to the clamping seat 53, the rotating seat 521 is provided with multiple second slide grooves 521a relative to the multiple first slide grooves 53b, the multiple second slide grooves 521a are distributed at intervals along the circumference of the channel 53a, the setting direction of the second slide grooves 521a is intersecting with the setting direction of the first slide grooves 53b, the rolling element 511 is slidable and rotatably inserted in the second slide groove 521a, and the second driving member 522 is connected to the clamping seat 53 and the rotating seat 521, and is used to drive the rotating seat 521 to rotate. It should be understood that multiple driving members can also be used to rotatably clamp the rolling element 511 and drive the multiple rolling elements 511 to slide relative to the clamping seat 53.

[0053] In this embodiment, a rotating seat 521 is provided, and the rotating seat 521 is a seat body with a hollow interior or an annular shape. The second driving member 522 drives the rotating seat 521 to rotate. Since the directions of the second slide groove 521a and the first slide groove 53b intersect, when the rotating seat 521 rotates, the inner wall of the second slide groove 521a squeezes the rolling member 511 and drives the rolling member 511 to slide along the first slide groove 53b. Moreover, the rotating seat 521 can simultaneously drive multiple rolling members 511 to approach and move away from each other. Through the rotating seat 521 and the second driving member 522, multiple rolling members 511 can be driven to approach and move away from each other at the same time.

[0054] It should be understood that the rotating seat 521 can be rotatably connected to the clamping seat 53 by a rotating shaft, a rotating pin, etc., or can be rotatably built into the clamping seat 53.

[0055] It should be understood that the second slide groove 521a, the first slide groove 53b and the rolling element 511 are arranged in a one-to-one correspondence, and may also be arranged in a corresponding manner in other ways.

[0056] In order to facilitate the sliding of the rolling element 511 relative to the rotating seat 521, in one embodiment, the second sliding groove 521a is arc-shaped. It should be understood that the second sliding groove 521a can also be linear.

[0057] By configuring the second slide groove 521 a to be arc-shaped, the arc-shaped second slide groove 521 a can smoothly guide the rolling element 511 to slide.

[0058] It should be understood that the driving assembly 52 can be any device that can drive the rotating seat 521 to rotate, and can be a combination of a motor and a belt transmission mechanism, or a combination of a motor and a gear transmission mechanism, etc.

[0059] It should be understood that the rolling element 511 can be slidably and rotatably connected to the first slide groove 53b and the second slide groove 521a by itself, or can be indirectly slidably and rotatably connected to the first slide groove 53b and the second slide groove 521a. Specifically, in one embodiment, the rotating component 51 also includes at least two first rotating shafts 513, and the two ends of the first rotating shaft 513 can be rotatably and slidably connected and inserted in the first slide groove 53b and the second slide groove 521a, and part of the rolling element 511 is sleeved on the first rotating shaft 513.

[0060] In this embodiment, by setting the first rotating shaft 513, the rolling element 511 slides through the first rotating shaft 513 and can be rotatably set in the first sliding groove 53b and the second sliding groove 521a, thereby realizing the connection between the rolling element 511 and the rotating seat 521 and the clamping seat 53. It should be understood that other structures can also be used to realize the connection between the rolling element 511 and the rotating seat 521 and the clamping seat 53.

[0061] In order to fix the rolling member 511 and the second driving member 522 without interfering with the sliding and rolling of the rolling member 511, in one embodiment, the rotating assembly 51 also includes a sliding frame 514, and the sliding frame 514 has a second rotating shaft 515 formed outwardly, and the second rotating shaft 515 is slidably arranged in the first sliding groove 53b and the second sliding groove 521a. The second driving member 522 is connected to the sliding frame 514, and at least one rolling member 511 is sleeved on the output shaft of the second driving member 522.

[0062] In this embodiment, the rolling member 511 is slidably and rotatably connected to the rotating seat 521 and the clamping seat 53 via the sliding frame 514 and the second rotating shaft 515. The rolling member 511 is driven by the output shaft of the second driving member 522 to roll, so that the rolling member 511 is slidably and rotatably connected to the rotating seat 521 and the clamping seat 53 via the output shaft of the second driving member 522. At the same time, when the second driving member 522 drives the rolling member 511 to roll, it will not interfere with the sliding of the rolling member 511 relative to the first sliding groove 53b and the second sliding groove 521a.

[0063] It should be understood that the number of rolling elements 511 can be three, four, five, etc. Specifically, in one embodiment, the number of rolling elements 511 is two, and the corresponding first rotating shafts 513 are two and one sliding frame 514. The two first rotating shafts 513 correspond to the two rolling elements 511, and the sliding frame 514 corresponds to another rolling element 511.

[0064] It should be understood that the rolling element 511 may be a roller, a roller sleeve, a sleeve, a bearing, etc. The rolling element 511 may be rotatably sleeved on the rotating shaft, or may be fixedly sleeved on the rotating shaft.

[0065] In order to detect the test tube 8 during the sealing process, in one embodiment, the adsorption and rotation device 3 includes an adsorption component 31, a driving structure 32 and a pneumatic component 33. The adsorption component 31 is connected to the frame 1 and has an adsorption end for adsorbing the test tube 8 and an exhaust end for exhausting. The driving structure 32 is connected to the frame 1 and the adsorption component 31, and is used to drive the adsorption component 31 to rotate. The pneumatic component 33 includes an air pipe 331, an exhaust unit 332 and a measuring sensor 333. The air inlet end of the air pipe 331 is connected to the exhaust end of the adsorption component 31, the air inlet end of the exhaust unit 332 is connected to the air outlet end of the air pipe 331, and the measuring sensor 333 is connected to the air pipe 331, and is used to detect the vacuum value in the test tube 8 through the air pipe 331 and the adsorption component 31.

[0066] Specifically, when performing melting and sealing, the exhaust unit 332 is connected to the exhaust end of the adsorption component 31 through the air pipe 331 to form a closed vacuum system, and the inside of the test tube 8 is evacuated. The measuring sensor 333 monitors the vacuum value in the air pipe 331 in real time to reflect the vacuum state inside the test tube 8. After the melting and sealing of the test tube 8 is completed, if there is a leakage, the measuring sensor 333 detects that the vacuum value in the test tube 8 is small, and the melting and sealing of the test tube 8 is defective at this time. The completion of the melting and sealing of the test tube 8 can be judged based on the vacuum value detected by the measuring sensor 333. The measuring sensor 333 transmits the detected data to the control module of the melting and sealing system. If it is judged that there is a leakage after the melting and sealing of the test tube 8, the control module controls the emergency warning light 9 to flash.

[0067] The driving structure 32 drives the test tube 8 to rotate during the sealing process, ensuring that heat is evenly distributed at the sealing portion of the test tube 8 to avoid local overheating or underheating; improving the quality and consistency of the sealing and reducing sealing defects caused by uneven heating.

[0068] It should be understood that the driving structure 32 may be a combination of a motor and a belt transmission mechanism, a combination of a motor and a gear transmission mechanism, etc.; the measuring sensor 333 may be a vacuum pressure sensor and a vacuum gauge, etc.

[0069] In order to seal the rotating test tube 8, in one embodiment, the adsorption assembly 31 includes a suction cup 311 and a magnetic fluid seal 312, the suction cup 311 has an adsorption end for adsorbing the test tube 8, the magnetic fluid seal 312 is connected to the suction cup 311 and can be rotatably connected to the frame 1, and the magnetic fluid seal 312 has an exhaust end for exhausting.

[0070] Specifically, the magnetic fluid seal 312 has two parts that can rotate relative to each other. An air channel for air flow is formed inside the magnetic fluid seal. When the suction cup 311 adsorbs the test tube 8, the gas in the test tube 8 is sucked away through the suction cup 311, the magnetic fluid seal and the air pipe 331, so that the test tube 8 is in a vacuum state.

[0071] Among them, the exhaust unit 332 can be a vacuum pump or a combination of an air compressor and a vacuum generator. In one embodiment, the exhaust unit 332 is a combination of an air compressor (not shown in the figure) and a vacuum generator (not shown in the figure). The air outlet end of the air compressor is also connected to the nozzle 221 and the air pipe 331. Valves are provided on each connecting path to control the opening and closing of the air pipe 331 for exhaust and exhaust and the nozzle 221 for jetting.

[0072] The present invention also provides a sealing method, using the above-mentioned test tube sealing system, comprising the following steps: The adsorption and rotation device 3 adsorbs the test tube 8 and drives the test tube 8 to rotate; The heating device 2 heats the test tube 8; The clamping device 5 clamps the test tube 8, and the clamping device 5 and the adsorption rotating device 3 jointly stretch the test tube 8; The heating device 2 heats the stretched portion of the test tube 8; The clamping device 5 drives part of the test tubes 8 to separate from the heating device 2 and disconnects the clamped test tubes 8 from the test tubes 8 adsorbed by the adsorption rotating device 3 .

[0073] When the above-mentioned sealing method is used for sealing, the test tube 8 is first heated, and the test tube 8 is rotated while heating, so that the test tube 8 can be evenly heated. At the same time, after the test tube 8 is heated and softened, the clamping device 5 and the adsorption rotating device 3 jointly stretch the test tube 8 to avoid accumulation of melted material in the test tube 8. At the same time, the test tube 8 at the stretched position can be contracted toward the center, and the stretched position can be rotated by cooperating with the adsorption rotating device 3 to make the stretched position melt and break to achieve sealing.

[0074] It should be understood that the test tube 8 may be fused when the clamping device 5 drives the test tube 8 to separate, or it may be fused by heat and rotation after stretching, or it may be fused by a combined action.

[0075] After the test tube 8 is fused, there are burrs and wire drawing at the fused position. In order to eliminate the burrs and wire drawing, in one embodiment, after the clamping device 5 drives part of the test tube 8 to separate from the heating device 2 and disconnects the clamped test tube 8 from the test tube 8 adsorbed by the adsorption rotating device 3, the following steps are further included: The clamping device 5 clamps the fused test tube 8 part and moves it to the heating device 2; The heating device 2 heats the broken portion of the test tube 8 .

[0076] In this embodiment, the clamping device 5 drives the fused test tube 8 to move to the heating device 2, and the broken part of the test tube 8 is heated by the heating device 2, so as to melt the wire drawing formed at the mouth of the test tube 8 and make the mouth of the test tube 8 more rounded and full.

[0077] During the melting process of the test tube 8, the adsorption rotating device 3 adsorbs and drives the test tube 8 to rotate. However, since the middle part of the test tube 8 is heated and softened, the test tube 8 on the adsorption rotating device 3 cannot continue to drive the test tube 8 clamped by the clamping device 5 to rotate. The test tube 8 clamped by the clamping device 5 can hardly rotate, which will cause the melting shape of the melting position to be uneven. For this reason, in one of the embodiments, in the step of heating the broken part of the test tube 8 by the heating device 2: the clamping device 5 clamps the melted test tube 8 while driving the test tube 8 to rotate.

[0078] By driving the test tube 8 to rotate, each circumference of the test tube 8 can contact the flame, be heated evenly, and melt evenly, so that the size of the welded seal of the formed test tube 8 is consistent.

[0079] In order to melt-seal the test tube 8, in one embodiment, the clamping device 5 clamps the test tube 8, and under the drive of the three-dimensional moving device 4, the clamping device 5 and the adsorption rotating device 3 jointly stretch the test tube 8 in the step: the clamping device 5 and the adsorption rotating device 3 stretch the test tube 8 multiple times at intervals.

[0080] By stretching the test tube 8 at intervals for multiple times, the test tube 8 can be gradually stretched so that the heated and softened position of the test tube 8 is gradually stretched, and the test tube 8 can be stretched evenly so that the thickness of the sealed end of the test tube 8 formed after the sealing is appropriate and the sealed shape is more regular.

[0081] It should be understood that the multiple stretching test tubes 8 may be two, three, four, etc. Specifically, in one embodiment, in the multiple stretching test tube 8 steps between the clamping device 5 and the adsorption rotating device 3: The clamping device 5 and the adsorption rotating device 3 stretch the test tube 8 for the first time, and during the first stretching process, the heating device 2 stops heating the test tube 8; The clamping device 5 and the adsorption rotating device 3 stretch the test tube 8 for the second time; The clamping device 5 and the adsorption rotating device 3 stretch the test tube 8 for the third time, and the heating device 2 heats the test tube 8 during the second and third stretching processes.

[0082] During the sealing process of the test tube 8, the clamping device 5 and the adsorption rotating device 3 will stretch the test tube 8 downward for multiple times. The first downward stretching of the test tube 8 prevents the melted material of the test tube 8 from stacking. The second downward stretching is to break the test tube 8 in order to seal it. The third downward stretching of the test tube 8 is to burn off the test tube 8 wire generated when the test tube 8 is sealed. The multiple stretching and sealing process ensures that the test tube 8 can both ensure quality and take into account appearance.

[0083] It should be understood that when the clamping device 5 and the adsorption rotating device 3 jointly stretch the test tube 8, the three-dimensional moving device 4 can drive the clamping device 5 and the test tube 8 to move in a direction away from the adsorption rotating device 3 to achieve stretching. The clamping device 5 and the test tube 8 can also remain stationary, and the adsorption rotating device 3 and the heating device 2 can rotate and rise as a whole and move in a direction away from the clamping device 5 to stretch the test tube.

[0084] It should be understood that the above-mentioned sealing method does not limit the order of the steps, and the order and number of steps can be adjusted as needed.

[0085] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A test tube sealing system, characterized in that: include: frame; A heating device, connected to the frame, for heating the test tube; An adsorption and rotation device, connected to the frame, used for adsorbing the test tube and driving the test tube to rotate; A three-dimensional moving device, connected to the frame and having a moving end capable of moving relative to the frame; and A clamping device is connected to the moving end and is used to clamp or release the test tube.

2. The test tube sealing system according to claim 1, characterized in that: The clamping device comprises: A rotating assembly, comprising a plurality of rolling elements, wherein the plurality of rolling elements are rotatably and slidably connected to the moving end, and the plurality of rolling elements are combined to form a clamping area with adjustable size; A driving assembly is connected to a plurality of the rolling elements and is used to adjust the size of the clamping area.

3. The test tube sealing system according to claim 2, characterized in that: The clamping device also includes a clamping seat, and the clamping seat is provided with a channel for inserting the test tube; The plurality of rolling elements are rotatably and slidably connected to the clamping seat, and are connected to the moving end via the clamping seat; The rotating assembly further comprises a first driving member, which is connected to the clamping seat and to any one or more of the rolling members, and is used to drive the rolling members to rotate.

4. The test tube sealing system according to claim 3, characterized in that: The clamping seat is provided with a plurality of first sliding grooves along the radial direction of the channel; The driving assembly includes a rotating seat and a second driving member. The rotating seat is rotatably connected to the clamping seat. The rotating seat is provided with a plurality of second slide grooves relative to the plurality of first slide grooves. The plurality of second slide grooves are distributed at intervals along the circumference of the channel. The setting direction of the second slide grooves intersects with the setting direction of the first slide grooves. The rolling member is slidably and rotatably inserted in the second slide grooves. The second driving member is connected to the clamping seat and the rotating seat for driving the rotating seat to rotate.

5. The test tube sealing system according to claim 1, characterized in that: The adsorption rotating device comprises: An adsorption assembly connected to the frame and having an adsorption end for adsorbing the test tube and an exhaust end for exhausting gas; A driving assembly, the driving assembly is connected to the frame and the adsorption assembly, and is used to drive the adsorption assembly to rotate; and The air pressure component includes an air pipe, an air extraction unit and a measuring sensor. The air inlet end of the air pipe is connected to the exhaust end of the adsorption component, the air inlet end of the air extraction unit is connected to the air outlet end of the air pipe, and the measuring sensor is connected to the air pipe for detecting the vacuum value in the test tube through the air pipe and the adsorption component.

6. A sealing method, characterized in that: The test tube sealing system according to any one of claims 1 to 5 comprises the following steps: The adsorption and rotation device adsorbs the test tube and drives the test tube to rotate; The heating device heats the test tube; The clamping device clamps the test tube, and the clamping device and the adsorption rotating device jointly stretch the test tube; The heating device heats the stretched portion of the test tube; The clamping device drives part of the test tubes to separate from the heating device and disconnects the clamped test tubes from the test tubes adsorbed by the adsorption rotating device.

7. The sealing method according to claim 6, characterized in that: After the step in which the clamping device drives some test tubes to separate from the heating device and disconnects the clamped test tubes from the test tubes adsorbed by the adsorption rotating device, the method further includes the following steps: The clamping device clamps the fused test tube part and moves it to the heating device; The heating device heats the fractured portion of the test tube.

8. The sealing method according to claim 7, characterized in that: In the step of heating the fractured portion of the test tube by the heating device: The clamping device clamps the fused test tube and drives the test tube to rotate at the same time.

9. The sealing method according to claim 6, characterized in that: In the step where the clamping device clamps the test tube, and the clamping device and the adsorption rotating device jointly stretch the test tube: The clamping device and the adsorption rotating device stretch the test tube multiple times at intervals.

10. The sealing method according to claim 9, characterized in that: In the step of stretching the test tube multiple times at intervals between the clamping device and the adsorption rotating device: The clamping device and the adsorption rotating device stretch the test tube for the first time, and during the first stretching process, the heating device stops heating the test tube; The clamping device and the adsorption rotating device stretch the test tube for the second time; The clamping device and the adsorption rotating device stretch the test tube for the third time, and during the second and third stretching processes, the heating device heats the test tube.

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