Sealing film opening device

Abstract

The utility model relates to the technical field of laboratory automation, and discloses a film unsealing device which comprises a film feeding mechanism, a film sealing mechanism and a film folding mechanism. An annular guide rail can be defined by the film feeding guide assembly; the film feeding and pressing assembly capable of moving horizontally comprises a pressing plate and a guide part used for moving in the horizontal direction and the vertical direction along the guide rail, when the guide part moves along the lower horizontal rail of the guide rail, the pressing plate presses the aluminum foil film, and when the guide part moves upwards along the vertical direction of the guide rail, the pressing plate loosens the aluminum foil film; the film pressing assembly can move up and down in the vertical direction so as to press the aluminum foil film during cutting; and the film cutting assembly is used for cutting the aluminum foil film. The guide piece can move along the annular guide rail defined by the film feeding guide mechanism, so that the contact state of the pressing plate and the aluminum foil film is changed, continuous accumulation of offset errors of the aluminum foil film in the pressing state is avoided, and the film clamping problem of the film feeding mechanism is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory automation, and more specifically, to an opening film device. Background Art

[0002] Before the current medical blood collection tubes enter the detection instrument, the tube caps need to be removed, and after detection, due to the need for re-inspection, the samples need to be sealed and stored in a refrigeration device. Currently, the sample tubes are mainly sealed by heat-sealing with aluminum foil membranes.

[0003] CN216512763U discloses a sample tube sealing device. Its film feeding mechanism mainly includes an aluminum foil film roller, a pressure roller, a conveying roller, and a driving motor for driving the conveying roller. The aluminum foil film is wound around the aluminum foil film roller. When in use, the pressure roller cooperates with the conveying roller under the action of the pressing device to press the aluminum foil film, and the driving motor drives the conveying roller to rotate to output the aluminum foil film.

[0004] The above mechanism uses the pressure roller to cooperate with the conveying roller to press the aluminum foil film, and cannot eliminate the offset error of the aluminum foil film relative to the aluminum foil film roller. As the aluminum foil film is conveyed, the offset error accumulates continuously until the outer edge of the aluminum foil film contacts or even rubs against the limit baffles at both ends of the aluminum foil film roller, resulting in easy film jamming and high failure rate of the film feeding mechanism.

[0005] In summary, how to avoid film jamming in the film feeding mechanism is an urgent problem to be solved by those skilled in the art at present. Content of the Utility Model

[0006] In view of this, the purpose of the utility model is to provide an opening film device, in which the guiding member of the film sealing mechanism can move along the annular guiding track surrounded by the film feeding guiding mechanism, so as to change the contact state between the pressing plate and the aluminum foil film, avoid the continuous accumulation of the offset error of the aluminum foil film under the pressing state, and thus solve the problem of film jamming in the film feeding mechanism.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An opening film device includes a film feeding mechanism, a film sealing mechanism, and a film folding mechanism. The film feeding mechanism includes:

[0009] A film feeding disk, around the outer periphery of which an aluminum foil film is wound;

[0010] A film feeding guiding assembly, which can surround an annular guiding track;

[0011] A horizontally movable film feeding and pressing film assembly, including a pressing plate and a guiding member for moving in horizontal and vertical directions along the guiding track. When the guiding member moves along the lower horizontal track of the guiding track, the pressing plate presses the aluminum foil film. When the guiding member moves vertically along the guiding track, the pressing plate releases the aluminum foil film;

[0012] A film pressing assembly that can move up and down in the vertical direction to press the aluminum foil film tightly during cutting;

[0013] A film cutting assembly for cutting the aluminum foil film.

[0014] Preferably, the film feeding and pressing assembly includes a film feeding and pressing mounting plate, a film feeding and pressing sliding base, an elastic member, and a connecting plate connected to the moving end of the horizontal moving assembly. The film feeding and pressing mounting plate is slidably connected to the connecting plate through the film feeding and pressing sliding base, and the film feeding and pressing mounting plate can slide relative to the connecting plate in the vertical direction;

[0015] A rotatable guide wheel is provided at the upper part of the film feeding and pressing mounting plate. A pressing plate for pressing the aluminum foil film is provided in the middle of the film feeding and pressing mounting plate. The lower part of the film feeding and pressing mounting plate is connected to the connecting plate through the elastic member, and the elastic member is used to provide a pressing force for pressing the aluminum foil film by the pressing plate.

[0016] Preferably, the film feeding and guiding assembly is sequentially provided with a first stop block, a horizontal guiding plate, a second stop block, and a fixed stop block along the conveying direction of the aluminum foil film. Both the first stop block and the fixed stop block include an upper horizontal plane, a lower horizontal plane, and a connecting inclined plane connecting the upper and lower horizontal planes. The connecting inclined plane is inclined downward towards the horizontal guiding plate;

[0017] Both the first stop block and the second stop block are rotatably connected to the film feeding and guiding mounting plate. A first elastic member is provided between the first stop block and the film feeding and guiding mounting plate, and a second elastic member is provided between the second stop block and the film feeding and guiding mounting plate;

[0018] When not subject to external force, the lower horizontal plane of the first stop block and the lower end surface of the baffle of the second stop block are flush with the lower end surface of the horizontal guiding plate, and the upper end surface of the baffle of the second stop block and the upper horizontal plane of the fixed stop block are flush with the upper end surface of the horizontal guiding plate.

[0019] Preferably, the film pressing assembly includes a lining plate and a bearing mounting seat connected to the lining plate. A guiding shaft is provided in the bearing mounting seat. A pressing portion for pressing the aluminum foil film is provided at the bottom of the guiding shaft. An elastic member is provided between the bearing mounting seat and the pressing portion, and the elastic member is used to drive the guiding shaft to reset.

[0020] Preferably, the film sealing mechanism includes:

[0021] A film sealing mounting plate;

[0022] A film sealing sliding base slidably disposed on the film sealing mounting plate, which can slide relative to the film sealing mounting plate in the vertical direction;

[0023] The film sealing motor, its fixed end is connected to the film sealing mounting plate, and its movable end is connected to the film sealing sliding base;

[0024] The heating component is slidably arranged on the film sealing sliding base, and it can slide relative to the film sealing sliding base in the vertical direction;

[0025] The elastic component can drive the heating component to slide relative to the film sealing sliding base;

[0026] The baffle is arranged on the film sealing sliding base and is used to drive the film cutting component to move downward in the vertical direction.

[0027] Preferably, the heating component includes a heating block, a heating rod and a temperature sensor. The heating rod is arranged inside the heating block, and the temperature sensor is arranged at the bottom of the heating block.

[0028] Preferably, the film folding mechanism includes:

[0029] The film folding mounting plate;

[0030] The motor mounting seat is slidably arranged on the film folding mounting plate, and it can slide relative to the film folding mounting plate in the vertical direction;

[0031] The film folding motor is installed on the motor mounting seat;

[0032] The transmission component, its input end is connected to the motor output shaft of the film folding motor, and is used to convert the rotation of the film folding motor into horizontal movement;

[0033] The profiling block is internally provided with at least one profiling hole for matching the sample tube, and it is connected to the output end of the transmission component.

[0034] Preferably, the transmission component includes a gripper gear sleeved on the motor output shaft and a gripper rack meshing with the gripper gear. The gripper rack is connected to the horizontal sliding base provided with the profiling block, and the horizontal sliding base is slidably installed on the second film folding guide rail of the motor mounting seat.

[0035] For the film opening and sealing device provided by the present utility model, when the film feeding and pressing component moves upward in the vertical direction along the guiding track, the pressing plate can loosen the aluminum foil film. Compared with the prior art where the pressing roller always presses the aluminum foil film, it avoids the continuous accumulation of the offset error of the aluminum foil film, makes the conveying of the aluminum foil film smooth, and reduces the risk of film jamming;

[0036] At the same time, the film pressing component can press the aluminum foil film during cutting, avoiding the retraction of the aluminum foil film during cutting, that is, when the guiding member moves along the guiding track in the opposite direction of the aluminum foil film conveying direction for resetting. Description of the Drawings

[0037] 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 the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0038] Figure 1 Structural schematic diagram of a specific embodiment of the film-opening device provided by the present invention;

[0039] Figure 2 Structural schematic diagram of the film-feeding mechanism;

[0040] Figure 3 Structural schematic diagram of the film-feeding mechanism in another direction;

[0041] Figure 4 Assembly schematic diagram of the film-feeding and film-pressing assembly and the film-feeding guiding assembly;

[0042] Figure 5 Structural schematic diagram of the film-feeding and film-pressing assembly;

[0043] Figure 6 Structural schematic diagram of the film-feeding guiding assembly;

[0044] Figure 7 Structural schematic diagram of the film-pressing assembly;

[0045] Figure 8 Structural schematic diagram of the film-sealing mechanism;

[0046] Figure 9 Structural schematic diagram of the film-folding structure.

[0047] Figures 1-9 Wherein:

[0048] 01 - Aluminum foil film; 10 - Film-feeding mechanism; 20 - Film-sealing mechanism; 30 - Film-folding mechanism;

[0049] 101 - Mounting plate; 102 - Film-feeding disc, 103 - Damping wheel, 104 - First guiding shaft, 105 - Second guiding shaft; 106 - Horizontal moving assembly; 1061 - Film-feeding motor; 1062 - Gripper rack; 1063 - Sliding base; 1064 - Horizontal guide rail;

[0050] 107 - Film-feeding and film-pressing assembly; 1071 - Film-feeding and film-pressing mounting plate; 1072 - Film-feeding and film-pressing sliding base; 1073 - Guide wheel; 1074 - Pressing plate; 1075 - Tension spring; 1076 - Connecting plate;

[0051] 108 - Film feeding and guiding assembly; 1081 - Film feeding and guiding mounting plate; 1082 - First stop block; 1083 - Horizontal guiding plate; 1084 - Second stop block; 1085 - Fixed stop block; 1086 - First limit block; 1087 - First tension spring; 1088 - Second tension spring;

[0052] 109 - Film pressing assembly; 1091 - Liner plate; 1092 - Bearing mounting seat; 1093 - Guide shaft; 1094 - Film pressing return spring; 1095 - Liner layer;

[0053] 110 - Film cutting assembly; 1101 - Cutting guide rail; 1102 - Film cutting sliding base; 1103 - Upper cutting knife for film cutting; 1104 - Support column; 1105 - Film cutting return spring; 1106 - Lower cutting knife for film cutting;

[0054] 111 - Lifting assembly; 1111 - Lifting motor; 1112 - Synchronous belt; 1113 - Fixed base;

[0055] 201 - Film sealing mounting plate; 202 - Film sealing motor; 203 - First film sealing guide rail; 204 - Film sealing sliding base; 205 - Second film sealing guide rail; 206 - Heating assembly; 2061 - Heating rod; 2062 - Heating block; 2063 - Temperature sensor; 207 - Elastic member; 208 - Baffle;

[0056] 301 - Film folding mounting plate; 302 - Film folding lifting motor; 303 - First film folding guide rail; 304 - Vertical sliding base; 305 - Film folding motor; 306 - Motor mounting seat; 307 - Motor output shaft; 308 - Gripper gear; 309 - Gripper rack; 310 - Horizontal sliding base; 311 - Second film folding guide rail; 312 - Profiled block. Detailed implementation mode

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0058] The core of the present invention is to provide an opening and film sealing device, and the guiding member of the film sealing mechanism can move along the annular guiding track surrounded by the film feeding and guiding mechanism, thereby changing the contact state between the pressing plate and the aluminum foil film, avoiding the continuous accumulation of offset errors of the aluminum foil film in the pressed state, and thus solving the problem of film jamming in the film feeding mechanism.

[0059] The film feeding device provided by the utility model comprises a film feeding mechanism 10, a film sealing mechanism 20 and a film folding mechanism 30. The film feeding mechanism 10 includes:

[0060] A film feeding disc 102, around the outer periphery of which an aluminum foil film 01 is wound;

[0061] A film feeding guiding assembly 108, which can form an annular guiding track;

[0062] A horizontally movable film feeding and pressing assembly 107, including a pressing plate 1074 and a guiding member for moving in horizontal and vertical directions along the guiding track. When the guiding member moves along the lower horizontal track of the guiding track, the pressing plate 1074 presses the aluminum foil film 01. When the guiding member moves vertically along the guiding track, the pressing plate 1074 releases the aluminum foil film 01;

[0063] A film pressing assembly 109, which can move up and down in the vertical direction to press the aluminum foil film 01 during cutting;

[0064] A film cutting assembly 110, which is used for cutting the aluminum foil film 01.

[0065] Among them, the film feeding mechanism 10, the film sealing mechanism 20 and the film folding mechanism 30 can form a film sealing channel. In order to increase the film sealing throughput of the film feeding and unsealing device, two or more film sealing channels can be arranged in the film feeding and unsealing device. As Figure 1 shown, the film sealing throughput of the film feeding and unsealing device is increased through multi-channel setting, so that it is adapted to the mold opening throughput of the film feeding and unsealing device, thereby improving the overall efficiency of the film feeding and unsealing device.

[0066] The film feeding mechanism 10 is used for conveying and cutting the aluminum foil film 01, and mainly includes a film feeding disc 102, a film feeding and pressing assembly 107, a film feeding guiding assembly 108, a film pressing assembly 109 and a film cutting assembly 110. Among them, the film feeding disc 102 is used for winding and storing the aluminum foil film 01, the film feeding and pressing assembly 107 is used for pressing and driving the aluminum foil film 01 to be conveyed forward, the film feeding guiding assembly 108 is used for forming a guiding track to guide the movement of the guiding member of the film feeding and pressing assembly 107, the film pressing assembly 109 is used for pressing the aluminum foil film 01 during cutting to prevent the aluminum foil film 01 from retracting, and the film cutting assembly 110 is used for cutting the aluminum foil film 01.

[0067] To ensure the accurate conveying length of the aluminum foil film 01 and avoid discharging excess aluminum foil film 01, a damping wheel 103 for contacting the film feeding disc 102 is arranged in the film feeding mechanism 10, and the damping wheel 103 can apply damping to the film feeding disc 102 during the rotation of the film feeding disc 102.

[0068] Considering that the distance between the film feeding disc 102 and the guiding track of the film feeding guiding assembly 108 is relatively far, in order to avoid excessive bending angle of the aluminum foil film 01 resulting in excessive local stress on the aluminum foil film 01, a guiding shaft is usually provided between the film feeding disc 102 and the guiding track. The number, size and distribution of the guiding shafts are determined according to the relative positional relationship between the film feeding disc 102 and the guiding track in actual production.

[0069] For example, please refer to Figure 2 , there are two first guiding shafts 104 and one second guiding shaft 105 between the film feeding discs 102. The lowest point of the aluminum foil film 01 on the second guiding shaft 105 is flush with or slightly lower than the lowest point of the pressing plate 1074 at the starting point of the guiding track, so that the aluminum foil film 01 can be pressed by the pressing plate 1074 after passing around the second guiding shaft 105; the first guiding shaft 104 is arranged between the film feeding disc 102 and the second guiding shaft 105.

[0070] The film feeding guiding assembly 108 can form an annular guiding track to guide the guiding member to move in the horizontal and vertical directions along the guiding track, so as to change the contact state between the pressing plate 1074 and the aluminum foil film 01 and eliminate the offset error of the aluminum foil film 01.

[0071] It should be noted that since the pressing plate 1074 needs to contact the aluminum foil film 01 to convey the aluminum foil film 01 forward by friction, there is at least one horizontal track in the annular guiding track, and this horizontal track is used to convey the aluminum foil film 01 to the cutting position;

[0072] The upward moving track for the pressing plate 1074 to disengage from the aluminum foil film 01 and the reset track for resetting the guiding member, the specific shapes, structures and sizes of the two are determined according to the actual production needs, such as the driving mode of the vertical movement of the guiding member, the processing difficulty of the guiding track and the manufacturing cost of the guiding track, etc.

[0073] The film feeding and pressing film assembly 107 is connected to the horizontal moving assembly 106, so the guiding member can move horizontally along the guiding track under the drive of the horizontal moving assembly 106. The vertical movement of the guiding member along the guiding track can be realized either by guiding through the connecting inclined plane of the film feeding guiding assembly 108 or by directly driving the guiding member with a driving element such as a motor.

[0074] To avoid interference between the pressing plate 1074 and the guiding member in movement, the guiding member is usually arranged above the pressing plate 1074, and both protrude from the front and rear sides of the film feeding and pressing film mounting plate 1071; in order to make the pressing plate 1074 better press the aluminum foil film 01, there are usually two pressing plates 1074 in the film feeding and pressing film assembly 107, and the two pressing plates 1074 are symmetrically arranged about the axis direction of the aluminum foil film 01; in order to reduce the friction between the guiding member and the guiding track, the guiding member is mostly arranged as a guiding shaft or a guiding wheel 1073.

[0075] The specific materials, shapes, structures, dimensions, etc. of both the pressing plate 1074 and the guiding member are determined according to the materials and thicknesses of the aluminum foil film 01 in actual production, so as to drive the aluminum foil film 01 to be conveyed forward while ensuring that the aluminum foil film 01 is not damaged.

[0076] The horizontal movement assembly 106 can specifically be set as common linear displacement mechanisms such as a guide rail slider mechanism, a ball screw mechanism, etc., and can also be set as linear power elements such as a linear motor, a cylinder, a hydraulic cylinder, etc.

[0077] Please refer to Figure 3 , the horizontal movement assembly 106 includes a film feeding motor 1061. A gripper gear is sleeved on the output shaft of the film feeding motor 1061. The gripper gear meshes with a gripper rack 1062. The gripper rack 1062 is arranged on a sliding base 1063. The sliding base 1063 is slidably arranged on a horizontal guide rail 1064 of the mounting plate 101, and the sliding base 1063 is connected to a film feeding and pressing mounting plate 1071 of the film feeding and pressing assembly 107.

[0078] Therefore, when the film feeding motor 1061 rotates, the gripper rack 1062 drives the sliding base 1063 to horizontally move relative to the mounting plate 101 along the horizontal guide rail 1064, and further drives the film feeding and pressing assembly 107 to horizontally move relative to the mounting plate 101.

[0079] For the convenience of controlling the stroke of the horizontal movement assembly 106, please refer to Figure 2 , one of the sliding base 1063 (or the film feeding and pressing assembly 107) and the mounting plate 101 is provided with a detection end of a proximity sensor, and the other is provided with a triggering end of the proximity sensor, such as a photoelectric door and a light shielding sheet.

[0080] The film pressing assembly 109 can move up and down in the vertical direction. Considering the coherence of the film sealing action, usually, the film sealing mechanism 20 is used to drive the film pressing assembly 109 to move downward in the vertical direction, and elastic members such as a film pressing return spring 1094 are used to realize the reset of the film pressing assembly 109.

[0081] Of course, a vertically arranged linear displacement mechanism or a linear power element can also be set to drive the film pressing assembly 109. Refer to the setting of the horizontal movement assembly 106 mentioned above.

[0082] The film cutting assembly 110 is used to cut the aluminum foil film 01. According to the number of cutting knives, the film cutting assembly 110 can be set as a single cutting knife structure, a double cutting knife structure, etc. Its specific structure and dimensions, etc. are determined with reference to the prior art according to the actual production needs, and will not be elaborated here.

[0083] In this embodiment, when the film feeding and pressing assembly 107 moves vertically along the guiding track, the pressing plate 1074 can loosen the aluminum foil film 01. Compared with the prior art where the pressing roller always presses the aluminum foil film 01, the continuous accumulation of the offset error of the aluminum foil film 01 is avoided, making the conveying of the aluminum foil film 01 smooth and reducing the risk of film jamming.

[0084] At the same time, the film pressing assembly 109 can press the aluminum foil film 01 during cutting, avoiding the retraction of the aluminum foil film 01 during cutting, that is, when the guiding member moves in the opposite direction of the aluminum foil film conveying direction along the guiding track for resetting.

[0085] Preferably, in order to conveniently adapt to sample tubes of different heights, the film feeding mechanism 10 may further be provided with a lifting assembly 111. Please refer to Figure 2 and Figure 3 , the lifting assembly 111 includes a lifting motor 1111, a driving pulley, a driven pulley, a synchronous belt 1112, and a fixed base 1113 for connecting with the film feeding and pressing assembly 107 and the film feeding guiding assembly 108. The lifting motor 1111 drives the synchronous belt 1112 to rotate through the driving pulley sleeved on the output shaft, thereby driving the film feeding and pressing assembly 107 and the film feeding guiding assembly 108 to move in the vertical direction.

[0086] On the basis of the above embodiment, the film feeding and pressing assembly 107 can be set to include a film feeding and pressing mounting plate 1071, a film feeding and pressing sliding base 1072, an elastic member, and a connecting plate 1076 connected to the moving end of the horizontal moving assembly 106. The film feeding and pressing sliding base 1072 is slidably connected to the connecting plate 1076 through the film feeding and pressing sliding base 1072, and the film feeding and pressing mounting plate 1071 can slide relative to the connecting plate 1076 in the vertical direction;

[0087] A rotatable guiding wheel 1073 is provided on the upper part of the film feeding and pressing mounting plate 1071, a pressing plate 1074 for pressing the aluminum foil film 01 is provided in the middle of the film feeding and pressing mounting plate 1071, and the lower part of the film feeding and pressing mounting plate 1071 is connected to the connecting plate 1076 through an elastic member, and the elastic member is used to provide the pressing force required for the pressing plate 1074 to press the aluminum foil film 01.

[0088] Please refer to Figure 5 , a shaft hole is provided in the upper part of the film feeding and pressing mounting plate 1071, and the guiding wheel 1073 is rotatably installed in the shaft hole through a rotating shaft. Axial limiting structures such as limiting step surfaces and locking bolts are provided at both ends of the wheel shaft to axially limit the guiding wheel 1073;

[0089] A film feeding and pressing mounting plate 1071 is provided with a film feeding and pressing sliding base 1072 arranged vertically below it, so as to limit the guide wheel 1073 when the film feeding and pressing assembly 107 moves vertically along the guide track of the film feeding guide assembly 108, and prevent the guide wheel 1073 from deviating from the vertical direction;

[0090] The pressing plate 1074 is fixed to the side of the film feeding and pressing mounting plate 1071 relatively far from the guide wheel 1073 through an L-shaped mounting plate. An elastic member is provided between the L-shaped mounting plate and the connecting plate 1076. The elastic member can be specifically set as a tension spring 1075, an elastic rubber member, etc. The elastic member is used to provide a pressing force for the pressing plate 1074 to press the aluminum foil film 01.

[0091] Please refer to Figure 4 , assuming that the aluminum foil film 01 is transported from left to right. When feeding the film, when the driving guide wheel 1073 moves from left to right along the annular guide track of the film feeding guide assembly 108, the pressing plate 1074 is pressed against the upper end surface of the aluminum foil film 01 under the action of the elastic member, and the aluminum foil film 01 is driven to be transported to the right by the frictional force between the pressing plate 1074 and the aluminum foil film 01;

[0092] After the aluminum foil film 01 is transported in place, the driving guide wheel 1073 moves upward along the guide track, driving the film feeding and pressing mounting plate 1071 and the pressing plate 1074 arranged on the film feeding and pressing mounting plate 1071 to move upward. The pressing plate 1074 is separated from the aluminum foil film 01, and at the same time, the elastic member is stretched to accumulate elastic potential energy;

[0093] Then, the driving guide wheel 1073 moves from right to left and downward along the guide track until the guide wheel 1073 is reset. At this time, the pressing plate 1074 is pressed against the aluminum foil film 01 again under the action of the elastic member.

[0094] It should be noted that the leftward movement and downward movement of the guide wheel 1073 can occur simultaneously, or it can be leftward movement first and then downward movement. However, in order to avoid the contact between the pressing plate 1074 and the aluminum foil film 01 during the reset process of the guide wheel 1073, the guide wheel 1073 is usually not set to move downward first and then leftward.

[0095] On the basis of the above embodiments, the film feeding guide assembly 108 can be provided with a first stop block 1082, a horizontal guide plate 1083, a second stop block 1084 and a fixed stop block 1085 in sequence along the aluminum foil film conveying direction. Both the first stop block 1082 and the fixed stop block 1085 include an upper horizontal plane, a lower horizontal plane and a connecting inclined plane connecting the upper and lower horizontal planes. The connecting inclined planes are all inclined downward towards the horizontal guide plate 1083;

[0096] Both the first stopper 1082 and the second stopper 1084 are rotatably connected to the film feeding guide mounting plate 1081. A first elastic member is provided between the first stopper 1082 and the film feeding guide mounting plate 1081, and a second elastic member is provided between the second stopper 1084 and the film feeding guide mounting plate 1081;

[0097] When no external force is applied, the lower horizontal surface of the first stopper 1082 and the lower end surface of the baffle of the second stopper 1084 are flush with the lower end surface of the horizontal guide plate 1083, and the upper end surface of the baffle of the second stopper 1084 and the upper horizontal surface of the fixed stopper 1085 are flush with the upper end surface of the horizontal guide plate 1083.

[0098] Among them, the first stopper 1082 and the second stopper 1084 are respectively arranged at both ends of the horizontal guide plate 1083. In order to facilitate the guiding member to pass smoothly through the connection between the first stopper 1082 and the horizontal guide plate 1083, the connecting shaft between the first stopper 1082 and the film feeding guide mounting plate 1081 can be arranged at one end of the first stopper 1082 relatively far from the horizontal guide plate 1083, and when no external force is applied, the front end of the first stopper 1082 and the horizontal guide plate 1083 are in contact in the aluminum foil film conveying direction.

[0099] The second stopper 1084 includes a horizontally arranged baffle and a vertically arranged connecting plate. The connecting plate is rotatably connected to the film feeding guide mounting plate 1081 through a connecting shaft. In order to facilitate the guiding member to pass smoothly through the second stopper 1084, both ends of the baffle protrude from the end faces of the horizontal guide plate 1083 and the fixed stopper 1085 relatively close to the second stopper 1084, and when no external force is applied, the lower end surface of the baffle of the baffle is flush with the lower end surface of the horizontal guide plate 1083, and the upper end surface of the baffle is flush with the upper end surface of the horizontal guide plate 1083.

[0100] In order to reserve the rotation space of the baffle, as Figure 6 shown, a notch for the baffle to pass through is provided at one end of the horizontal guide plate 1083 close to the second stopper 1084; the specific shape and size of the horizontal guide plate 1083 are determined according to the shape of the guiding member in actual production, which will not be elaborated here.

[0101] When the guiding member moves obliquely upward along the connecting slope of the fixed stopper 1085, the second stopper 1084 is extremely subjected to the upward pressure of the guiding member and rotates counterclockwise downward relative to the film feeding guide mounting plate 1081; similarly, when the guiding member moves obliquely downward along the connecting slope of the first stopper 1082, the first stopper 1082 is subjected to the downward pressure of the guiding member and rotates clockwise downward relative to the film feeding guide mounting plate 1081.

[0102] To enable the first stopper 1082 and the second stopper 1084 to reset after the guide member leaves, a first elastic member is provided between the first stopper 1082 and the film feeding guide mounting plate 1081, and a second elastic member is provided between the second stopper 1084 and the film feeding guide mounting plate 1081. The first elastic member and the second elastic member are respectively used to drive the first stopper 1082 and the second stopper 1084 to reset, and they are usually set as tension springs, such as Figure 6 the first tension spring 1087 and the second tension spring 1088 shown

[0103] When feeding the film, please refer to Figure 6 , drive the guide member of the film feeding and film pressing assembly 107 to move along line segment a, so that the guide member sequentially passes through the lower horizontal plane of the first stopper 1082, the lower end surface of the horizontal guide plate 1083, and the lower end surface of the baffle of the second stopper 1084 along the aluminum foil film conveying direction until the guide member contacts the connecting inclined surface of the fixed stopper 1085. At this time, the film pressing and film feeding assembly conveys the aluminum foil film 01 forward to the cutting position, and at the same time, the film pressing assembly 109 moves downward in the vertical direction and presses the aluminum foil film 01 tightly;

[0104] Then drive the guide member to move along line segment b, so that the guide member moves upward in the vertical direction while continuing to move forward along the aluminum foil film conveying direction, pushing the baffle of the second stopper 1084 to rotate counterclockwise, so that the pressing plate 1074 is gradually separated from the aluminum foil film 01 until the guide member moves to the upper horizontal plane of the fixed stopper 1085. At this time, the second stopper 1084 resets under the action of the second reset member, and the guide member contacts the upper plane of the baffle of the second stopper 1084;

[0105] Then drive the guide member to move along line segment c, so that the guide member sequentially passes through the upper end surface of the baffle of the second stopper 1084 and the upper end surface of the horizontal guide plate 1083 in the reverse direction of the aluminum foil film conveying direction until the guide member moves to the connection position between the horizontal guide plate 1083 and the first stopper 1082;

[0106] Finally, remove the horizontal driving force of the guide member, and use the elastic restoring force of the elastic member of the film feeding and film pressing assembly 107 to drive the guide member to press down the first stopper 1082, so that the guide member moves along the guiding section d to reset. After the guide member is separated from the first stopper 1082, the first stopper 1082 resets under the action of the first elastic member.

[0107] In this embodiment, the first stopper 1082 and the second stopper 1084 cooperate with the horizontal guide plate 1083 and the fixed stopper 1085 to form an annular guiding track, which has a simple structure and low cost, and the settings of the first elastic member and the second elastic member respectively realize the automatic reset of the first stopper 1082 and the second stopper 1084, facilitating the continuous film feeding of the film feeding mechanism 10.

[0108] Considering that the first stop block 1082 abuts against the horizontal guide plate 1083, in order to prevent the first stop block 1082 from impacting the horizontal guide plate 1083 upward when the stop block resets, preferably, a first limit block 1086 can be provided on the film feeding guide mounting plate 1081 above the first stop block 1082. When the lower horizontal plane of the first stop block 1082 is flush with the lower end surface of the horizontal guide plate 1083, the upper edge of the first stop block 1082 abuts against the first limit block 1086 to limit the maximum rotation angle of the first stop block 1082 upward.

[0109] Based on the above embodiment, the structure of the film pressing assembly 109 is defined. The film pressing assembly 109 includes a lining plate 1091 and a bearing mounting seat 1092 connected to the lining plate 1091. A guide shaft 1093 is provided in the bearing mounting seat 1092. A pressing portion for pressing the aluminum foil film 01 is provided at the bottom of the guide shaft 1093. An elastic member is provided between the bearing mounting seat 1092 and the pressing portion, and the elastic member is used to drive the guide shaft 1093 to reset.

[0110] Please refer to Figure 7 , when the bearing mounting seat 1092 or the guide shaft 1093 is pressed, the guide shaft 1093 moves downward, and the pressing portion of the guide shaft 1093 cooperates with the lining plate 1091 to press the aluminum foil film 01 so that the film cutting assembly 110 can cut the aluminum foil film 01.

[0111] In order to prevent the aluminum foil film 01 from moving relative to the lining plate 1091, a limiting groove for restricting the axial direction of the aluminum foil film 01 is provided in the lining plate 1091; in order to facilitate the installation of elastic members such as the film pressing return spring 1094, a pressing portion is provided at the bottom of the guide shaft 1093, and the outer diameter of the pressing portion is larger than the outer diameter of the guide shaft 1093; in order to prevent problems such as compression damage, film sticking, and high-temperature wear of the aluminum foil film 01 during the film pressing process, a lining layer 1095 such as a PTFE lining layer is usually provided at the bottom of the pressing portion.

[0112] In order to save installation space, usually, the film sealing mechanism 20 or a vertically arranged linear power element is not directly used to drive the bearing mounting seat 1092 or the guide shaft 1093. Instead, the bearing mounting seat 1092 is connected to the film cutting sliding base 1102 of the film cutting assembly 110, and the baffle 208 of the film sealing mechanism 20 is used to press down the above-mentioned film cutting sliding base 1102.

[0113] Please refer to Figure 3 and Figure 7 , a vertically arranged cutting guide rail 1101 is provided on the upper end surface of the lining plate 1091. The upper cutting knife 1103 is slidably connected to the cutting guide rail 1101 through the film cutting sliding base 1102. A lower cutting knife 1106 is provided on the lining plate 1091 below the upper cutting knife 1103;

[0114] To further restrict the movement direction of the upper cutting knife 1103 for cutting, a support column 1104 is provided on the mounting seat of the lower cutting knife 1106 for cutting. The mounting seat of the upper cutting knife 1103 for cutting is slidably sleeved on the support column 1104;

[0115] A film cutting return spring 1105 is provided between the mounting seat of the upper cutting knife 1103 for cutting and the mounting seat of the lower cutting knife 1106 for cutting. The film cutting return spring 1105 is sleeved outside the support column 1104 and is used to drive the upper cutting knife 1103 for cutting to return after the film sealing mechanism 20 disengages from the film cutting assembly 110.

[0116] Compared with the single cutting knife setting, the upper and lower double cutting knives can more accurately determine the cutting position, and at the same time, the cutting quality at the cut of the aluminum foil film 01 is also better.

[0117] Based on the above embodiments, the structure of the film sealing mechanism 20 is defined. The film sealing mechanism 20 includes:

[0118] A film sealing mounting plate 201;

[0119] A film sealing sliding base 204 slidably disposed on the film sealing mounting plate 201, which can slide relative to the film sealing mounting plate 201 in the vertical direction;

[0120] A film sealing motor 202, whose fixed end is connected to the film sealing mounting plate 201 and whose movable end is connected to the film sealing sliding base 204;

[0121] A heating component 206 slidably disposed on the film sealing sliding base 204, which can slide relative to the film sealing sliding base 204 in the vertical direction;

[0122] An elastic member 207 that can drive the heating component 206 to slide relative to the film sealing sliding base 204;

[0123] A baffle 208 disposed on the film sealing sliding base 204 for driving the film cutting assembly 110 to move downward in the vertical direction.

[0124] Please refer to Figure 8 , the film sealing mounting plate 201 of the film sealing mechanism 20 is provided with a first film sealing guide rail 203 in the vertical direction. The film sealing sliding base 204 is slidably connected to the first film sealing guide rail 203 so that the film sealing motor 202 can drive the film sealing sliding base 204 to slide in the vertical direction of the film sealing mounting plate 201.

[0125] The film sealing sliding base 204 is connected to the vertically arranged baffle 208 through a horizontal connecting plate. The baffle 208 is used to press down the film cutting sliding base 1102 of the film cutting assembly 110, and further drive the upper cutting knife 1103 for cutting to approach the lower cutting knife 1106 for cutting, so as to cut the aluminum foil film 01. The shape and size of the baffle 208 are determined according to the shape and size of the above-mentioned film cutting sliding base 1102;

[0126] To prevent the aluminum foil film 01 from retracting during film cutting, the bearing mounting base 1092 of the film pressing assembly 109 can be arranged on the film cutting sliding base 1102 of the film cutting assembly 110. Therefore, when the film cutting sliding base 1102 is pressed down, the film cutting sliding base 1102 can drive the film pressing assembly 109 to move downward in the vertical direction, and the film pressing assembly 109 is used to press the aluminum foil film 01 to be cut tightly.

[0127] For the convenience of controlling the stroke of the film sealing sliding base 204, please refer to Figure 8 , one of the film sealing sliding base 204 and the film sealing mounting plate 201 is provided with the detection end of the proximity sensor, and the other is provided with the trigger end of the proximity sensor, such as a photoelectric door and a light shielding piece.

[0128] The film sealing sliding base 204 is provided with a second film sealing guide rail 205 in the vertical direction. The heating assembly 206 is slidably mounted on the second film sealing guide rail 205 through a heating mounting base, and an elastic member 207 such as a return spring is provided between the horizontal connecting plate and the heating mounting base to drive the heating assembly 206 to slide along the film sealing sliding base 204.

[0129] For example, when the horizontal connecting plate compresses the elastic member 207, the elastic restoring force of the elastic member 207 drives the heating assembly 206 to slide downward relative to the film sealing sliding base 204; conversely, when the elastic member 207 is not compressed, the elastic member 207 drives the heating assembly 206 to slide upward and reset.

[0130] The heating assembly 206 can be specifically set as a heating block 2062, a heating rod 2061 and a temperature sensor 2063. Among them, the heating rod 2061 is arranged in the heating block 2062, and the temperature sensor 2063 is arranged at the bottom of the heating block 2062 to control the heating power of the heating rod 2061; the materials and sizes of the heating block 2062 and the heating rod 2061, as well as the types and models of the temperature sensor 2063, etc. are determined according to actual production needs.

[0131] During film sealing, the film sealing motor 202 is controlled to drive the film sealing sliding base 204 to slide downward along the first film sealing guide rail 203, so that the baffle 208 and the heating assembly 206 mounted on the film sealing sliding base 204 slide downward synchronously. The baffle 208 presses down the film cutting assembly 110 to complete film cutting. After the heating assembly 206 contacts the sample tube, the horizontal connecting plate compresses the elastic member 207 to make the heating assembly 206 slide downward along the second film sealing guide rail 205, and the heating assembly 206 heat-seals the aluminum foil film 01 on the sample tube.

[0132] On the basis of the above embodiments, the structure of the film folding mechanism 30 is defined. The film folding mechanism 30 includes:

[0133] A film folding mounting plate 301;

[0134] The motor mounting base 306 is slidably disposed on the folding film mounting plate 301 and can slide relative to the folding film mounting plate 301 in the vertical direction;

[0135] The folding film motor 305 is mounted on the motor mounting base 306;

[0136] The transmission assembly, its input end is connected to the motor output shaft 307 of the folding film motor 305, and is used to convert the rotation of the folding film motor 305 into a horizontal movement;

[0137] The profiling block 312 is internally provided with at least one profiling hole for matching the sample tube, and is connected to the output end of the transmission assembly.

[0138] Wherein, the motor mounting base 306 can be slidably connected to the folding film mounting plate 301 through a linear displacement mechanism such as a guide rail sliding mechanism or a ball screw mechanism. Similarly, the transmission assembly can be set as a linear displacement mechanism such as a gear rack mechanism or a guide rail slider mechanism.

[0139] The profiling hole of the profiling block 312 is used to fold the edge of the aluminum foil film 01. In order to adapt to sample tubes of different diameters, usually the profiling block 312 is provided with a plurality of profiling holes with different diameters. In order to increase the fitting degree of the folded edge, the profiling hole is set as a dodecagon hole or a polygon hole with more sides.

[0140] When folding the film, control the motor mounting base 306 of the folding film motor 305 to slide relative to the folding film mounting plate 301, so that the height of the profiling block 312 is adapted to the height of the sample tube to be folded, and the tube opening of the sample tube enters the profiling hole; then control the transmission assembly of the folding film motor 305 to drive the profiling block 312 to move left and right, and fold the aluminum foil film 01 so that it adheres to the outer wall surface of the sample tube.

[0141] Please refer to Figure 9 , the folding film mounting plate 301 is provided with a first folding film guide rail 303 arranged in the vertical direction. The motor mounting base 306 is slidably connected to the first folding film guide rail 303 through a vertical sliding base 304. The output shaft of the folding film lifting motor 302 is connected to the vertical sliding base 304, so as to drive the vertical sliding base 304 and the motor mounting base 306 to slide up and down relative to the folding film mounting plate 301 in the vertical direction;

[0142] The transmission assembly includes a gripper gear 308 sleeved on the motor output shaft 307 of the folding film motor 305 and a gripper rack 309 meshing with the gripper gear 308. The gripper rack 309 is connected to a horizontal sliding base 310 provided with a profiling block 312. The horizontal sliding base 310 is slidably mounted on a second folding film guide rail 311 of the motor mounting base 306, and the second folding film guide rail 311 is arranged in the horizontal direction.

[0143] To facilitate the control of the stroke of the motor mounting base 306, one of the motor mounting base 306 and the film folding mounting plate 301 (or the first film folding guide rail 303) is provided with the detection end of a proximity sensor, and the other is provided with the trigger end of the proximity sensor, such as a photoelectric gate and a light-shielding piece;

[0144] To facilitate the control of the stroke of the horizontal sliding base 310, one of the horizontal sliding base 310 and the motor mounting base 306 (or the second film folding guide rail 311) is provided with the detection end of a proximity sensor, and the other is provided with the trigger end of the proximity sensor, such as a photoelectric gate and a light-shielding piece.

[0145] It should be noted that the first guide shaft 104 and the second guide shaft 105, the first stopper 1082 and the second stopper 1084, the first elastic member and the second elastic member, the first tension spring 1087 and the second tension spring 1088, the first film sealing guide rail 203 and the second film sealing guide rail 205, and the first and second in the first film folding guide rail 303 and the second film folding guide rail 311 only indicate the difference in position and do not include the limitation of the order.

[0146] In this specification, the various embodiments are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0147] The above has introduced the film opening device provided by the present utility model in detail. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A film unsealing device, comprising a film feeding mechanism (10), a film sealing mechanism (20) and a film folding mechanism (30), characterized in that: The film feeding mechanism (10) comprises: A film feeding disk (102) having an aluminum foil film (01) wound around its outer periphery; A film feeding guide assembly (108), which can form a circular guide track; A film conveying and pressing assembly (107) that can be moved horizontally comprises a pressing plate (1074) and a guide member for moving along the guide track in the horizontal and vertical directions. When the guide member moves along the lower horizontal track of the guide track, the pressing plate (1074) presses the aluminum foil film (01). When the guide member moves along the vertical direction of the guide track, the pressing plate (1074) releases the aluminum foil film (01). A film pressing assembly (109) which can move up and down in a vertical direction so as to press the aluminum foil film (01) during cutting; The film cutting assembly (110) is used for cutting the aluminum foil film (01).

2. The film opening device according to claim 1, characterized in that: The film-feeding and film-pressing assembly (107) comprises a film-feeding and film-pressing mounting plate (1071), a film-feeding and film-pressing sliding base (1072), an elastic member, and a connecting plate (1076) connected to the moving end of the horizontal moving assembly (106); the film-feeding and film-pressing mounting plate (1071) is slidably connected to the connecting plate (1076) via the film-feeding and film-pressing sliding base (1072); the film-feeding and film-pressing mounting plate (1071) can slide in a vertical direction relative to the connecting plate (1076); The upper part of the film feeding and laminating mounting plate (1071) is provided with a rotatable guide wheel (1073), the middle part of the film feeding and laminating mounting plate (1071) is provided with the pressing plate (1074) for pressing the aluminum foil film (01), and the lower part of the film feeding and laminating mounting plate (1071) is connected to the connecting plate (1076) through the elastic member, and the elastic member is used to provide the pressing force for the pressing plate (1074) to press the aluminum foil film (01).

3. The film opening device according to claim 1, characterized in that: The film feeding guide assembly (108) is provided with a first stopper (1082), a horizontal guide plate (1083), a second stopper (1084) and a fixed stopper (1085) in sequence along the conveying direction of the aluminum foil film, the first stopper (1082) and the fixed stopper (1085) both comprising an upper horizontal surface, a lower horizontal surface and a connecting inclined surface connecting the upper and lower horizontal surfaces, the connecting inclined surfaces both being arranged to be inclined downward toward the horizontal guide plate (1083); The first stopper (1082) and the second stopper (1084) are both rotatably connected to the film feeding guide mounting plate (1081), a first elastic member is provided between the first stopper (1082) and the film feeding guide mounting plate (1081), and a second elastic member is provided between the second stopper (1084) and the film feeding guide mounting plate (1081); When not subject to external force, the lower horizontal surface of the first stopper (1082) and the lower end surface of the baffle of the second stopper (1084) are both flush with the lower end surface of the horizontal guide plate (1083), and the upper end surface of the baffle of the second stopper (1084) and the upper horizontal surface of the fixed stopper (1085) are both flush with the upper end surface of the horizontal guide plate (1083).

4. The film opening device according to claim 1, characterized in that: The film pressing assembly (109) includes a lining plate (1091) and a bearing mounting seat (1092) connected to the lining plate (1091), a guide shaft (1093) is arranged inside the bearing mounting seat (1092), a crimping portion for pressing the aluminum foil film (01) is arranged at the bottom of the guide shaft (1093), an elastic member is arranged between the bearing mounting seat (1092) and the crimping portion, and the elastic member is used to drive the guide shaft (1093) to reset.

5. The film opening device according to any one of claims 1 to 4, characterized in that: The film sealing mechanism (20) comprises: Sealing film mounting plate (201); A film sealing sliding base (204) slidably disposed on the film sealing mounting plate (201), which can slide in a vertical direction relative to the film sealing mounting plate (201); A film sealing motor (202), a fixed end of which is connected to the film sealing mounting plate (201), and a movable end of which is connected to the film sealing sliding base (204); A heating component (206) slidably disposed on the film sealing sliding base (204), which can slide in a vertical direction relative to the film sealing sliding base (204); An elastic member (207) can drive the heating component (206) to slide relative to the film sealing sliding base (204); The baffle (208) is disposed on the film sealing sliding base (204) and is used to drive the film cutting assembly (110) to move downward in a vertical direction.

6. The film opening device according to claim 5, characterized in that: The heating component (206) comprises a heating block (2062), a heating rod (2061) and a temperature sensor (2063), wherein the heating rod (2061) is arranged in the heating block (2062), and the temperature sensor (2063) is arranged at the bottom of the heating block (2062).

7. The film opening device according to any one of claims 1 to 4, characterized in that: The film folding mechanism (30) comprises: Folding film mounting plate (301); a motor mounting seat (306) slidably disposed on the film folding mounting plate (301) and capable of sliding in a vertical direction relative to the film folding mounting plate (301); A film folding motor (305) is mounted on the motor mounting seat (306); A transmission assembly, the input end of which is connected to the motor output shaft (307) of the film folding motor (305), and is used to convert the rotation of the film folding motor (305) into movement in the horizontal direction; The profiling block (312) is provided with at least one profiling hole for matching the sample tube and is connected to the output end of the transmission component.

8. The film opening device according to claim 7, characterized in that: The transmission assembly includes a gripper gear (308) sleeved on the motor output shaft (307) and a gripper rack (309) meshed with the gripper gear (308); the gripper rack (309) is connected to a horizontal sliding base (310) provided with the contour block (312); the horizontal sliding base (310) is slidably mounted on the second film folding guide rail (311) of the motor mounting seat (306).

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