Film cutting device and film sealing equipment

Abstract

The utility model relates to a film cutting device and film sealing equipment. The membrane cutting device comprises a conveying mechanism, a membrane cutting mechanism and a pressing mechanism, the conveying mechanism is used for conveying membranes to the membrane cutting mechanism, the membrane cutting mechanism is used for cutting the membranes, and the pressing mechanism is arranged on the side, away from the membrane cutting mechanism, of the conveying mechanism in the membrane conveying direction; wherein the pressing mechanism comprises a first base and a pressing part, the pressing part and the first base are arranged on the top side and the bottom side of the membrane respectively in the thickness direction of the membrane, and the pressing part is used for pressing the membrane on the first base. According to the film cutting device and the film sealing and tearing machine comprising the film cutting device, shaking and retreating of the film can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a film cutting device and a film sealing device. Background Art

[0002] After the first test of the sample is completed, in order to facilitate the subsequent re-test of the sample, it is usually necessary to seal the sample after the first test and store it at a low temperature. In the related art, the sample is sealed by heat-sealing the sample tube with a diaphragm. Since the diaphragm is generally in the form of a strip, it is necessary to use a film cutting device to transfer the diaphragm and cut the diaphragm before heat sealing. However, during the process of transferring the diaphragm by a traditional film cutting device, the diaphragm is prone to shaking and retreating. Therefore, how to reduce the risk of shaking and retreating of the film cutting device has become a problem that needs to be solved urgently. Utility Model Content

[0003] Based on this, it is necessary to provide a film cutting device and a film sealing device that can reduce jitter and backlash to address the above problems.

[0004] A film cutting device, comprising a transmission mechanism, a film cutting mechanism and a pressing mechanism, wherein the transmission mechanism is used to transmit a film sheet to the film cutting mechanism, the film cutting mechanism is used to cut the film sheet, and the pressing mechanism is arranged on a side of the transmission mechanism away from the film cutting mechanism along the transmission direction of the film sheet;

[0005] The pressing mechanism comprises a first base and a pressing component, wherein the pressing component and the first base are respectively arranged on the top side and the bottom side of the diaphragm along the thickness direction of the diaphragm, and the pressing component is used to press the diaphragm onto the first base.

[0006] In some embodiments, the pressing mechanism also includes a first elastic member and an assembly member, the assembly member is arranged on the first base, and the first elastic member abuts between the assembly member and the pressing member; the pressing member is constructed to press the diaphragm onto the first base with the help of the elastic force of the first elastic member.

[0007] In some embodiments, the pressing component includes a first mounting portion, a second mounting portion and a pressing portion, the first mounting portion, the pressing portion and the second mounting portion are arranged along the width direction of the diaphragm, the first mounting portion and the second mounting portion are both arranged on the first base, and the pressing portion is rotatably connected between the first mounting portion and the second mounting portion, and is used to press the diaphragm in a rolling manner.

[0008] In some embodiments, the transmission mechanism includes a transmission drive component and a clamping component, the clamping component is used to clamp or loosen the diaphragm, the transmission drive component is transmission-connected to the clamping component, and is used to drive the clamping component to transmit the diaphragm to the film cutting mechanism when the clamping component clamps the diaphragm.

[0009] In some embodiments, the transmission drive assembly includes a transmission motor, a transmission driving wheel, a transmission driven wheel and a transmission synchronous belt; the transmission motor is transmission-connected to the transmission driving wheel, the transmission synchronous belt is sleeved outside the transmission driving wheel and the transmission driven wheel, and the clamping assembly is arranged on the transmission synchronous belt.

[0010] In some embodiments, the clamping assembly includes a second base, a clamping component and a clamping motor, the clamping component and the second base are respectively arranged on the top side and the bottom side opposite to each other along the thickness direction of the diaphragm, the second base is transmission-connected to the transmission drive assembly, and the clamping motor is arranged on the second base and transmission-connected to the clamping component;

[0011] The clamping motor is used to drive the clamping component to move toward or away from the second base along the thickness direction of the diaphragm. When the clamping component moves downward toward the second base, the clamping component and the second base jointly clamp the diaphragm. When the clamping component moves upward away from the second base, the clamping component releases the diaphragm.

[0012] In some embodiments, the clamping assembly further includes a first transmission member and a second transmission member, the clamping motor and the first transmission member are both located on the bottom side of the second base facing away from the clamping component, and the first transmission member is transmission-connected between the clamping motor and the second transmission member, the second transmission member passes through the second base, and one end of the second transmission member away from the first transmission member is fixedly connected to the clamping component.

[0013] In some embodiments, the first transmission member comprises a first transmission part and a second transmission part connected to each other, the first transmission part is located at the bottom side of the second transmission part facing away from the second base; the second transmission member comprises a rod part and a cap part, the rod part passes through the second base and is fixedly connected to the clamping member, the cap part is arranged at one end of the rod part away from the clamping member and is located between the first transmission part and the second transmission part;

[0014] The clamping assembly further includes a second elastic member, the second elastic member abutting between the second transmission portion and the cap portion;

[0015] The first transmission part is used to push the cap part to drive the clamping part to move away from the second base, and the second transmission part is used to squeeze the second elastic member so that the second elastic member is compressed and pushes the cap part to drive the clamping member to move toward the second base.

[0016] In some embodiments, the film cutting mechanism includes a film cutting drive assembly, a third base and a film cutting component, wherein the film cutting component and the third base are arranged at intervals on the top and bottom sides of the film along the thickness direction of the film, and the film cutting drive assembly is in transmission connection with the film cutting component;

[0017] The film cutting driving assembly is used to drive the film cutting component to move toward or away from the third base along the thickness direction of the film. When the film cutting component moves toward the third base, the film cutting component cuts the film.

[0018] In some embodiments, the film cutting drive assembly includes a film cutting motor, a transmission wheel, a connecting piece and a support seat. The film cutting motor is transmission-connected to the transmission wheel. The connecting piece is rotatably connected between the transmission wheel and the support seat. The film cutting component is arranged on the support seat. The film cutting motor is used to drive the transmission wheel to synchronously drive the connecting piece, the support seat and the film cutting component to move.

[0019] A film sealing device comprises a film cutting device as described in any one of the above claims.

[0020] In the above-mentioned film cutting device and film sealing equipment, when the transmission mechanism drives the film to be transmitted along the transmission direction of the film, the pressing component always presses the film on the first base. In this way, during the film transmission process, it is helpful to reduce the risk of the film shaking up and down in its own thickness direction, and the film transmission is more stable. In the process of circulating the film and cutting the film, since the film is always pressed by the pressing component, it can also reduce the risk of the film retreating in the direction opposite to the transmission direction of the film due to unexpected circumstances, thereby improving the reliability of the film cutting device and the film sealing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of a film cutting device in one embodiment of the present application.

[0022] Figure 2 for Figure 1 A schematic structural diagram of the pressing mechanism in the film cutting device is shown.

[0023] Figure 3 for Figure 1 A schematic structural diagram of the clamping assembly in the film cutting device is shown.

[0024] Figure 4 for Figure 1The structural schematic diagram of the film cutting mechanism in the film cutting device shown.

[0025] Figure Number:

[0026] 1. Film cutting device;

[0027] 10. Base; 20. Storage mechanism; 30. Pressing mechanism; 40. Transmission mechanism; 50. Film cutting mechanism;

[0028] 31. first base; 32. pressing component; 321. first mounting portion; 322. second mounting portion; 323. pressing portion; 33. first elastic member; 34. assembly member; 35. first membrane passage;

[0029] 41. Transmission drive assembly; 411. Transmission motor; 412. Transmission synchronous belt; 42. Clamping assembly; 421. Second base; 422. Clamping component; 423. Clamping motor; 424. First transmission member; 4241. First transmission part; 4242. Second transmission part; 4243. Connecting part; 4243a. First sub-part; 4243b. Second sub-part; 425. Second transmission member; 4251. Rod; 4252. Cap; 426. Second elastic member; 427. Transmission slide rail; 428. Second film-passing channel;

[0030] 51. Film cutting drive assembly; 511. Film cutting motor; 512. Transmission wheel; 513. Connector; 514. Support seat; 52. Third base; 53. Film cutting component; 54. Third film passing channel;

[0031] X, the transmission direction of the diaphragm; Y, the width direction of the diaphragm; Z, the thickness direction of the diaphragm. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0038] The present application provides a film sealing device, which is used to seal the sample tube after the first test. The film sealing device can be used alone, or the film sealing device can be used in combination with a film removal device, a storage device, and a sample analysis device to form a test line for the first test and re-test of the sample. The sample analysis device is used to perform the first test and re-test of the sample, the storage device is used to refrigerate the sample tube after the film is sealed, and the film removal device is used to remove the film and recover the film before re-testing.

[0039] As an example, the diaphragm may be aluminum foil, copper foil or other diaphragms that can be shaped, etc., and may be specifically configured according to user needs and is not limited here.

[0040] See also Figure 1 The film sealing device includes a film cutting device 1 and a film sealing device. The film cutting device 1 is used to transfer and cut the film. The film sealing device is used to transfer the short strips of film formed by cutting and cover the tube mouth of the sample tube, and heat-seal and shape the film.

[0041] The film cutting device 1 includes a base 10, a storage mechanism 20, a transmission mechanism 40, a film cutting mechanism 50 and a pressing mechanism 30, wherein the storage mechanism 20, the transmission mechanism 40, the film cutting mechanism 50 and the pressing mechanism 30 are all assembled on the base 10. The storage mechanism 20 is used to store the film, the transmission mechanism 40 is used to transmit the film stored in the storage mechanism 20 to the film cutting mechanism 50, the film cutting mechanism 50 is used to cut the film, and the pressing mechanism 30 is used to press the film during the film transmission process.

[0042] Please also read Figure 2 , wherein the storage mechanism 20 is located upstream of the transmission mechanism 40 in the transmission direction X of the film, and the pressing mechanism 30 is arranged on the side of the transmission mechanism 40 away from the film cutting mechanism 50 along the transmission direction X of the film. The pressing mechanism 30 includes a first base 31 and a pressing component 32, the first base 31 is installed on the base 10, the pressing component 32 and the first base 31 are arranged on the top side and the bottom side of the film respectively along the thickness direction Z of the film, and the pressing component 32 is used to press the film on the first base 31.

[0043] A first film passage 35 that allows the diaphragm to pass through is defined between the pressing component 32 and the first base 31. When the transmission mechanism 40 drives the diaphragm to be transmitted along the transmission direction X of the diaphragm, the pressing component 32 always presses the diaphragm on the first base 31. In this way, during the transmission of the diaphragm, it is helpful to reduce the risk of the diaphragm shaking up and down in its own thickness direction Z, and the diaphragm transmission is more stable. During the process of circulating the diaphragm and cutting the diaphragm, since the diaphragm is always pressed by the pressing component 32, the risk of the diaphragm retreating to the storage mechanism 20 in the direction opposite to the transmission direction X of the diaphragm due to unexpected circumstances can also be reduced, thereby improving the reliability of the film cutting device 1.

[0044] For example, in the related art, the transmission mechanism 40 is an electric control mechanism, including a driving motor, an active roller and a driven roller. When the driving motor drives the active roller to rotate, the film passes through the roller gap between the active roller and the driven roller, and is transported along the transmission direction X under the action of the active roller. When the power is accidentally cut off, the active roller stops rotating, the film cannot be transmitted and may even return to the storage mechanism 20, resulting in the need to take the film out of the storage mechanism 20 again later.

[0045] In some embodiments of the present application, the pressing mechanism 30 also includes a first elastic member 33 and an assembly member 34, the assembly member 34 is arranged on the first base 31, and the first elastic member 33 abuts between the assembly member 34 and the pressing member 32; the pressing member 32 is constructed to press the diaphragm onto the first base 31 with the help of the elastic force of the first elastic member 33.

[0046] As an example, the first elastic member 33 may be a compression spring, elastic silicone or other elastic structures, and it is only necessary to ensure that the pressing component 32 can press the diaphragm onto the first base 31 by means of the elastic force of the first elastic member 33 .

[0047] Preferably, the first elastic member 33 is a compression spring, and the first elastic member 33 is sleeved on the assembly member 34 to achieve positioning.

[0048] The pressing component 32 is constructed to press the diaphragm onto the first base 31 with the help of the elastic force of the first elastic member 33, so that the pressing component 32 exerts elastic pressure on the diaphragm. The elastic pressure causes the pressing component 32 to elastically press the diaphragm. This pressing method will not cause excessive pressure on the diaphragm, and is therefore less likely to wear the diaphragm.

[0049] In some embodiments of the present application, the pressing component 32 includes a first mounting portion 321, a second mounting portion 322 and a pressing portion 323. The first mounting portion 321, the pressing portion 323 and the second mounting portion 322 are arranged along the width direction Y of the diaphragm. The first mounting portion 321 and the second mounting portion 322 are both arranged on the first base 31. The pressing portion 323 is rotatably connected between the first mounting portion 321 and the second mounting portion 322, and is used to press the diaphragm in a rolling manner.

[0050] There are two first elastic members 33 and two assembly members 34, and the two assembly members 34 respectively penetrate the first mounting portion 321 and the second mounting portion 322, and are fixed to the first base 31. One of the first elastic members 33 is sleeved on the assembly member 34 penetrating the first mounting portion 321, and is pressed between the assembly member 34 and the first mounting portion 321, and the other first elastic member 33 is sleeved on the assembly member 34 penetrating the second mounting portion 322, and is pressed between the assembly member 34 and the second mounting portion 322. The two first elastic members 33 cooperate to apply elastic force to the pressing member 32 from both ends of the pressing member 32.

[0051] The pressing portion 323 is rotatably connected between the first mounting portion 321 and the second mounting portion 322. When the diaphragm passes through the first membrane passage 35, the pressing portion 323 rolls on the surface of the diaphragm and presses the diaphragm. In this way, the contact area between the pressing portion 323 and the diaphragm is small, and the friction force is also reduced, so that the diaphragm is not easily worn.

[0052] Please refer again Figure 1 , and also see Figure 3 In some embodiments of the present application, the transmission mechanism 40 includes a transmission drive component 41 and a clamping component 42. The clamping component 42 is used to clamp or loosen the diaphragm. The transmission drive component 41 is transmission-connected to the clamping component 42 and is used to drive the clamping component 42 to transmit the diaphragm to the film cutting mechanism 50 when the clamping component 42 clamps the diaphragm.

[0053] The clamping assembly 42 has a first limit position and a second limit position, which are arranged along the transmission direction X of the diaphragm and are located between the pressing mechanism 30 and the film cutting mechanism 50. When the clamping assembly 42 is located at the first limit position and clamps the diaphragm, the clamping assembly 42 moves toward the second limit position along the transmission direction X of the diaphragm under the action of the transmission drive assembly 41 to transmit the diaphragm to the film cutting mechanism 50. When the clamping assembly 42 moves to the second limit position, the diaphragm transmission ends, and the film cutting mechanism cuts off the diaphragm. Afterwards, the clamping assembly 42 releases the diaphragm and moves toward the first limit position in the direction opposite to the transmission direction X of the diaphragm under the action of the transmission drive assembly 41. When the clamping assembly 42 returns to the first limit position, the clamping assembly 42 re-clamps the diaphragm and transmits the diaphragm to the film cutting mechanism 50 again under the drive of the transmission drive assembly 41.

[0054] By setting the clamping assembly 42 and the transmission drive assembly 41, on the one hand, the distance that the clamping assembly 42 moves along the transmission direction X of the diaphragm is fixed, and the length of the diaphragm transmitted from the storage mechanism 20 along the transmission direction X of the diaphragm is fixed, which is conducive to achieving fixed-length and quantitative cutting with high cutting accuracy. On the other hand, during the process of the clamping assembly 42 clamping the diaphragm and transmitting, the position between the clamping assembly 42 and the diaphragm is relatively fixed and there is no wear between the clamping assembly 42 and the diaphragm. In addition, the way in which the clamping assembly 42 clamps the diaphragm and transmits the diaphragm is that the diaphragm is not easy to slip during the transmission process, and the transmission accuracy is high and the transmission is accurate.

[0055] Among them, the transmission drive component 41 includes a transmission motor 411, a transmission driving wheel, a transmission driven wheel and a transmission synchronous belt 412; the transmission motor 411 is connected to the transmission driving wheel, the transmission synchronous belt 412 is sleeved outside the transmission driving wheel and the transmission driven wheel, and the clamping component 42 is set on the transmission synchronous belt 412.

[0056] The transmission synchronous belt 412 extends along the transmission direction X of the diaphragm. In actual operation, the power of the transmission motor 411 is transmitted to the clamping assembly 42 through the transmission driving wheel and the transmission synchronous belt 412 in sequence, so as to drive the clamping assembly 42 to slide along the transmission direction X of the diaphragm or in the direction opposite to the transmission direction. The transmission drive assembly 41 of this design has stable power transmission, which is conducive to the smooth transportation of the diaphragm.

[0057] Among them, the clamping assembly 42 includes a second base 421, a clamping part 422 and a clamping motor 423. The clamping part 422 and the second base 421 are respectively arranged on the top and bottom sides opposite to each other along the thickness direction Z of the diaphragm. The second base 421 is transmission-connected to the transmission drive assembly 41. The clamping motor 423 is arranged on the second base 421 and transmission-connected to the clamping part 422. The clamping motor 423 is used to drive the clamping part 422 to move toward or away from the second base 421 along the thickness direction Z of the diaphragm. When the clamping part 422 moves downward toward the second base 421, the clamping part 422 and the second base 421 clamp the diaphragm together. When the clamping part 422 moves upward away from the second base 421, the clamping part 422 releases the diaphragm.

[0058] Specifically, the second base 421 is disposed on the base 10, and a second film-passing channel 428 is formed between the clamping component 422 and the second base 421. The film passes through the second film-passing channel 428. When the clamping motor 423 drives the clamping component 422 to move downward toward the second base 421, the clamping component 422 and the second base 421 clamp the film together, so that the clamping assembly 42 can transfer the film to the film cutting mechanism 50 under the action of the transmission drive assembly 41. When the clamping motor 423 drives the clamping component 422 to move upward with its back toward the second base 421, the clamping component 422 releases the film. After that, the clamping component 42 moves in a direction opposite to the transmission direction X of the film under the action of the transmission drive assembly 41 to prepare for the subsequent re-transmission of the film.

[0059] The clamping assembly 42 of this design can satisfy the function of transmitting the diaphragm while also having the characteristic of simple structure.

[0060] In some embodiments, the transmission drive assembly 41 also includes a transmission slide rail 427, which extends along the transmission direction X of the diaphragm. The second base 421 is slidably set on the transmission slide rail 427 and moves under the guidance of the transmission slide rail 427, thereby achieving the purpose of smooth movement of the lifting and clamping assembly 42.

[0061] In some embodiments, the clamping assembly 42 also includes a first transmission member 424 and a second transmission member 425. The clamping motor 423 and the first transmission member 424 are both located on the bottom side of the second base 421 facing away from the clamping component 422, and the first transmission member 424 is transmission-connected between the clamping motor 423 and the second transmission member 425. The second transmission member 425 passes through the second base 421, and one end of the second transmission member 425 away from the first transmission member 424 is fixedly connected to the clamping component 422.

[0062] During actual operation, the power of the clamping motor 423 is transmitted to the clamping component 422 through the first transmission member 424 and the second transmission member 425 in sequence, and drives the clamping component 422 to move toward or away from the second base 421 .

[0063] By designing that the clamping motor 423 and the first transmission member 424 are both located on the bottom side of the second base 421 facing away from the clamping component 422, and the first transmission member 424 is transmission-connected between the clamping motor 423 and one end of the second transmission member 425, the second transmission member 425 passes through the second base 421, and one end of the second transmission member 425 facing away from the first transmission member 424 is fixedly connected to the clamping component 422, which is beneficial to improving the compactness of the layout of the transmission mechanism 40.

[0064] Furthermore, the first transmission member 424 has a first transmission part 4241 and a second transmission part 4242 connected to each other, and the first transmission part 4241 is located at the bottom side of the second transmission part 4242 facing away from the second base 421; the second transmission member 425 has a rod part 4251 and a cap part 4252, the rod part 4251 passes through the second base 421 and is fixed to the clamping member 422, and the cap part 4252 is arranged at one end of the rod part 4251 away from the clamping member 422 and is located between the first transmission part 4241 and the second transmission part 4242; the clamping assembly 42 also includes a second elastic member 426, and the second elastic member 426 abuts between the second transmission part 4242 and the cap part 4252;

[0065] The first transmission part 4241 is used to push the cap part 4252 to drive the clamping part 422 to move away from the second base 421 , and the second transmission part 4242 is used to squeeze the second elastic member 426 so that the second elastic member 426 is compressed and pushes the cap part 4252 to drive the clamping part 422 to move toward the second base 421 .

[0066] As an example, the second elastic member 426 may be a compression spring, elastic silicone or other elastic structures. Preferably, the second elastic member 426 is a compression spring, and the second elastic member 426 is sleeved on the rod 4251 to achieve positioning.

[0067] The first transmission member 424 also includes a connecting portion 4243, which includes a first sub-portion 4243a and a second sub-portion 4243b. The first sub-portion 4243a extends along the thickness direction Z of the diaphragm and connects the first transmission portion 4241 and the second transmission portion 4242. The second sub-portion 4243b extends along the width direction Y of the diaphragm and is connected to the clamping motor 423 for transmission.

[0068] In actual operation, the clamping motor 423 drives the connecting part 4243 to drive the first transmission part 4241 to move up a distance, so that the first transmission part 4241 abuts against the cap part 4252. After that, the first transmission part 4241 continues to move up, and simultaneously pushes the cap part 4252, the rod part 4251 and the clamping part 422 to move up, so as to achieve the purpose of the clamping part 422 loosening the diaphragm.

[0069] When the clamping motor 423 drives the connecting part 4243 to drive the second transmission part 4242 to move downward, the distance between the second transmission part 4242 and the cap part 4252 is gradually shortened, and then the second elastic member 426 is further compressed. When the second elastic member 426 is compressed to a certain extent, the elastic force applied by the second elastic member 426 to the cap part 4252 drives the cap part 4252 to synchronously drive the rod part 4251 and the clamping member 422 to move downward, so as to achieve the purpose of the clamping member 422 and the second base 421 clamping the diaphragm together. In this process, due to the existence of the second elastic member 426, the second elastic member 426 has a buffering performance, so the elastic force applied by the second elastic member 426 to the cap part 4252 is not too large, so that in the process of the clamping member 422 moving toward the second base 421 and moving downward, the clamping force applied by the clamping member 422 to the diaphragm is appropriate, and the diaphragm will not be over-extruded, thereby reducing the risk of curling and deformation of the diaphragm or even wear. It is worth mentioning that when the second transmission part 4242 moves downward, the first transmission part 4241 also moves downward, but the movement of the first transmission part 4241 in this manner does not interfere with the clamping part 422 .

[0070] In some embodiments, a avoidance notch or a avoidance hole is provided on the second transmission part 4242 , and the rod part 4251 is passed through the avoidance notch or the avoidance hole to achieve compact fit between the first transmission member 424 and the second transmission member 425 .

[0071] In some embodiments, the clamping assembly 42 also includes a guide sleeve, which penetrates the second base 421 along the thickness direction Z of the diaphragm. The rod 4251 is inserted into the guide sleeve and slides under the guidance of the guide sleeve to improve the smoothness of the movement of the rod 4251 and the clamping component 422.

[0072] In some embodiments, there are two second transmission members 425, two second elastic members 426 and two guide sleeves, and the two second transmission members 425 are arranged at intervals along the width direction Y of the diaphragm, and the diaphragm passes through the two second transmission members 425. The first transmission member 424 includes two first transmission parts 4241 and two second transmission parts 4242, and the connecting part 4243 has two first sub-parts 4243a, and the second sub-part 4243b is connected between the two first sub-parts 4243a to form an H-shaped structure. The two second elastic members 426, two guide sleeves, two second transmission parts 4242, two first transmission parts 4241 and two first sub-parts 4243a are all matched with the two second transmission members 425. The mutual matching mode of the second elastic member 426, the guide sleeve, the second transmission part 4242, the first transmission part 4241 and the first sub-part 4243a corresponding to each other and the second transmission member 425 is consistent with the above, so it is not repeated here.

[0073] Please refer again Figure 1 , and also see Figure 4In some embodiments of the present application, the film cutting mechanism 50 includes a film cutting drive assembly 51, a third base 52 and a film cutting component 53. The film cutting component 53 and the third base 52 are arranged at intervals on the top and bottom sides of the diaphragm along the thickness direction Z of the diaphragm, and the film cutting drive assembly 51 is transmission-connected with the film cutting component 53; the film cutting drive assembly 51 is used to drive the film cutting component 53 to move toward or away from the third base 52 along the thickness direction Z of the diaphragm. When the film cutting component 53 moves toward the third base 52, the film cutting component 53 cuts off the diaphragm.

[0074] Specifically, the third base 52 is mounted on the base 10, and a third film passage 54 is formed between the film cutting component 53 and the third base 52, and the film passes through the third film passage 54. It is worth mentioning that during the operation of the film cutting device 1, the film always passes through the first film passage 35, the second film passage 428 and the third film passage 54 in sequence. When the clamping assembly 42 moves from the first extreme position to the second extreme position, the film protrudes from the third film passage 54 in its own transmission direction X, and the protruding length is equal to the distance between the first extreme position and the second extreme position.

[0075] In addition, since the diaphragm in the present application has a certain rigidity, when the clamping assembly 42 moves in a direction opposite to the transmission direction X of the diaphragm, although the diaphragm is only pressed by the pressing mechanism 30, the diaphragm located between the pressing mechanism 30 and the film cutting mechanism 50 always remains extended.

[0076] When the film cutting drive assembly 51 drives the film cutting component 53 to move downward toward the third base 52, the film extending out of the third film passing channel 54 is cut off, and the short film strip formed by cutting is used to seal the tube mouth of the sample tube later. After cutting, when the film cutting drive assembly 51 drives the film cutting component 53 to move upward with its back toward the third base 52, the film cutting component 53 is separated from the third base 52 and prepared for the next cutting.

[0077] The film cutting mechanism designed in this way can not only meet the function of cutting the film, but also has the characteristics of simple structure.

[0078] Furthermore, in some embodiments of the present application, the film cutting drive assembly 51 includes a film cutting motor 511, a transmission wheel 512, a connecting piece 513 and a support seat 514. The film cutting motor 511 is transmission-connected to the transmission wheel 512. The connecting piece 513 is rotatably connected between the transmission wheel 512 and the support seat 514. The film cutting component 53 is disposed on the support seat 514. The film cutting motor 511 is used to drive the transmission wheel 512 to synchronously drive the connecting piece 513, the support seat 514 and the film cutting component 53 to move.

[0079] The transmission wheel 512 and the connecting member 513 together form a structure similar to a connecting rod. When the film cutting motor 511 is working, the transmission wheel 512 and the connecting member 513 rotate synchronously, so that the support seat 514 can push the film cutting component 53 to move up or down. The film cutting component 53 can move quickly through this transmission mode, so that the film cutting component 53 can have enough speed to complete the cutting action and ensure the smooth progress of the cutting action.

[0080] Specifically, a hollow area is provided on the third base 52, and the connecting member 513 and the support seat 514 are inserted into the hollow area to achieve avoidance. Moreover, the film cutting component 53 protrudes from the support seat 514 in the film transmission direction X, and the protruding part of the film cutting component 53 cooperates with the edge of the hollow part of the third base 52 to achieve cutting.

[0081] See also Figure 1 and Figure 2 In the above-mentioned film cutting device 1 and film sealing equipment, a first film passing channel 35 is defined between the pressing component 32 and the first base 31 to allow the film to pass through. In the process of the transmission mechanism 40 driving the film to be transmitted along the transmission direction X of the film, the pressing component 32 always presses the film on the first base 31. In this way, during the transmission of the film, it is helpful to reduce the risk of the film shaking up and down in its own thickness direction Z, and the film transmission is smoother. In the process of circulating the film and cutting the film, since the film is always pressed by the pressing component 32, the risk of the film retreating to the storage mechanism 20 in the direction opposite to the transmission direction X of the film due to unexpected circumstances can also be reduced, thereby improving the reliability of the film cutting device 1.

[0082] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A film cutting device, characterized in that: The film cutting device comprises a transmission mechanism (40), a film cutting mechanism (50) and a pressing mechanism (30), wherein the transmission mechanism (40) is used to transmit the film sheet to the film cutting mechanism (50), the film cutting mechanism (50) is used to cut the film sheet, and the pressing mechanism (30) is arranged on a side of the transmission mechanism (40) away from the film cutting mechanism (50) along a transmission direction (X) of the film sheet; The pressing mechanism (30) comprises a first base (31) and a pressing component (32); the pressing component (32) and the first base (31) are respectively arranged on the top side and the bottom side of the diaphragm along the thickness direction (Z) of the diaphragm, and the pressing component (32) is used to press the diaphragm onto the first base (31).

2. The film cutting device according to claim 1, characterized in that: The pressing mechanism (30) further comprises a first elastic member (33) and an assembly member (34); the assembly member (34) is arranged on the first base (31); the first elastic member (33) abuts between the assembly member (34) and the pressing member (32); the pressing member (32) is constructed to press the diaphragm onto the first base (31) by means of the elastic force of the first elastic member (33).

3. The film cutting device according to claim 1 or 2, characterized in that: The pressing component (32) includes a first mounting portion (321), a second mounting portion (322) and a pressing portion (323); the first mounting portion (321), the pressing portion (323) and the second mounting portion (322) are arranged along the width direction (Y) of the diaphragm; the first mounting portion (321) and the second mounting portion (322) are both arranged on the first base (31); the pressing portion (323) is rotatably connected between the first mounting portion (321) and the second mounting portion (322) and is used to press the diaphragm in a rolling manner.

4. The film cutting device according to claim 1, characterized in that: The transmission mechanism (40) comprises a transmission drive component (41) and a clamping component (42), wherein the clamping component (42) is used to clamp or loosen the diaphragm, and the transmission drive component (41) is transmission-connected to the clamping component (42) and is used to drive the clamping component (42) to transmit the diaphragm to the film cutting mechanism (50) when the clamping component (42) clamps the diaphragm.

5. The film cutting device according to claim 4, characterized in that: The transmission drive assembly (41) comprises a transmission motor (411), a transmission driving wheel, a transmission driven wheel and a transmission synchronous belt (412); the transmission motor (411) is drivingly connected to the transmission driving wheel, the transmission synchronous belt (412) is sleeved outside the transmission driving wheel and the transmission driven wheel, and the clamping assembly (42) is arranged on the transmission synchronous belt (412).

6. The film cutting device according to claim 4 or 5, characterized in that: The clamping assembly (42) comprises a second base (421), a clamping component (422) and a clamping motor (423); the clamping component (422) and the second base (421) are respectively arranged on the top side and the bottom side opposite to each other along the thickness direction (Z) of the diaphragm; the second base (421) is transmission-connected to the transmission drive assembly (41); the clamping motor (423) is arranged on the second base (421) and transmission-connected to the clamping component (422); The clamping motor (423) is used to drive the clamping component (422) to move toward or away from the second base (421) along the thickness direction (Z) of the diaphragm; when the clamping component (422) moves downward toward the second base (421), the clamping component (422) and the second base (421) clamp the diaphragm together; when the clamping component (422) moves upward away from the second base (421), the clamping component (422) releases the diaphragm.

7. The film cutting device according to claim 6, characterized in that: The clamping assembly (42) also includes a first transmission member (424) and a second transmission member (425), the clamping motor (423) and the first transmission member (424) are both located on the bottom side of the second base (421) facing away from the clamping member (422), and the first transmission member (424) is transmission-connected between the clamping motor (423) and the second transmission member (425), the second transmission member (425) passes through the second base (421), and one end of the second transmission member (425) away from the first transmission member (424) is fixedly connected to the clamping member (422).

8. The film cutting device according to claim 7, characterized in that: The first transmission member (424) comprises a first transmission part (4241) and a second transmission part (4242) which are connected to each other, and the first transmission part (4241) is located at the bottom side of the second transmission part (4242) which is away from the second base (421); the second transmission member (425) comprises a rod part (4251) and a cap part (4252), the rod part (4251) passes through the second base (421) and is fixedly connected to the clamping part (422), and the cap part (4252) is arranged at one end of the rod part (4251) away from the clamping part (422), and is located between the first transmission part (4241) and the second transmission part (4242); The clamping assembly (42) further comprises a second elastic member (426), wherein the second elastic member (426) abuts between the second transmission portion (4242) and the cap portion (4252); The first transmission part (4241) is used to push the cap part (4252) to drive the clamping part (422) to move away from the second base (421), and the second transmission part (4242) is used to squeeze the second elastic part (426) so that the second elastic part (426) is compressed and pushes the cap part (4252) to drive the clamping part (422) to move toward the second base (421).

9. The film cutting device according to claim 1, characterized in that: The film cutting mechanism (50) comprises a film cutting drive assembly (51), a third base (52) and a film cutting component (53), wherein the film cutting component (53) and the third base (52) are arranged at intervals on the top and bottom sides of the film sheet along the thickness direction (Z) of the film sheet, and the film cutting drive assembly (51) is connected to the film cutting component (53) in a transmission manner; The film cutting drive assembly (51) is used to drive the film cutting component (53) to move toward or away from the third base (52) along the thickness direction (Z) of the film sheet; when the film cutting component (53) moves toward the third base (52), the film cutting component (53) cuts the film sheet.

10. The film cutting device according to claim 9, characterized in that: The film cutting drive assembly (51) comprises a film cutting motor (511), a transmission wheel (512), a connecting piece (513) and a support seat (514); the film cutting motor (511) is transmission-connected to the transmission wheel (512); the connecting piece (513) is rotatably connected between the transmission wheel (512) and the support seat (514); the film cutting component (53) is arranged on the support seat (514); the film cutting motor (511) is used to drive the transmission wheel (512) to synchronously drive the connecting piece (513), the support seat (514) and the film cutting component (53) to move.

11. A film sealing device, characterized in that: It comprises a film cutting device as described in any one of claims 1 to 10 above.

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