Airtight mechanism of a gas replacement carousel device of a packaging machine

Abstract

The application discloses a sealing mechanism of a gas replacement rotary disc device of a packaging machine and relates to the field of packaging machines, which comprises a rear sealing plate, a front sealing plate and a transmission mechanism, the rear sealing plate and the front sealing plate correspond to each other and are close to each other for clamping an externally inserted insertion tube between the two; one end of the front sealing plate is connected with the transmission mechanism in linkage, the rear sealing plate is connected with the transmission mechanism in linkage, the transmission mechanism has a first action of driving the front sealing plate to swing inwards along a horizontal plane and driving the rear sealing plate to be close to the front sealing plate and a second action of driving the front sealing plate to swing outwards along the horizontal plane and driving the rear sealing plate to be away from the front sealing plate after being stressed. The application has the advantages of good working stability and improved gas replacement efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of packaging machines, in particular to a sealing mechanism of a packaging machine gas replacement carousel device. BACKGROUND

[0002] The existing packaging machine gas replacement device generally opens and closes the bag opening through the bag clamping machine clamp, the gas replacement mechanism pipe is driven by the driving mechanism to move up and down, so as to complete the insertion into the packaging bag for gas replacement work and the pulling out from the packaging bag after the completion of gas replacement, and the heat sealing bag opening work after completion, but this structure has a problem that the bag opening of the packaging bag for gas replacement is not completely sealed, and the gas in the bag will never be completely replaced, so it is urgent to design a sealing mechanism to ensure the efficiency of gas replacement. SUMMARY

[0003] In order to overcome the deficiencies of the background art, the present application provides a sealing mechanism of a packaging machine gas replacement carousel device, which has good working stability and improves the efficiency of gas replacement.

[0004] The technical scheme adopted by the present application is as follows: a sealing mechanism of a packaging machine gas replacement carousel device, comprising a rear sealing plate, a front sealing plate and a transmission mechanism, the rear sealing plate and the front sealing plate correspond to each other and are close to each other for clamping an external pipe inserted between them; one end of the front sealing plate is connected with the transmission mechanism in linkage, the rear sealing plate is connected with the transmission mechanism in linkage, the transmission mechanism has a first action of driving the front sealing plate to swing inward along the horizontal plane and driving the rear sealing plate to approach the front sealing plate, and a second action of driving the front sealing plate to swing outward along the horizontal plane and driving the rear sealing plate to move away from the front sealing plate after being stressed.

[0005] The rear sealing plate swings under the driving of the transmission mechanism to approach and move away from the front sealing plate.

[0006] The rear sealing plate is fixedly connected with the transmission mechanism, and the rear sealing plate linearly translates under the driving of the transmission mechanism to approach and move away from the front sealing plate.

[0007] It also includes a carousel, a plurality of groups of sub-clamping mechanisms are arranged on the circumference of the carousel, and the front sealing plate and the rear sealing plate are respectively rotatably installed on the sub-clamping mechanisms.

[0008] It also includes a carousel, the front sealing plate and the rear sealing plate are respectively rotatably installed on the carousel, and an avoidance groove is formed on the outer circumference of the carousel for the movement of the rear sealing plate and the transmission mechanism.

[0009] The transmission mechanism comprises:

[0010] A moving assembly is movably installed on the carousel.

[0011] The mobile assembly and the front sealing plate are hingedly connected through a first linkage rod, and the mobile assembly and the rear sealing plate are hingedly connected through a second linkage rod.

[0012] The transmission mechanism comprises a second mounting bracket movably mounted on the rotating disc, the second mounting bracket and the front sealing plate are hingedly connected through a third linkage rod, and the second mounting bracket and the rear sealing plate are hingedly connected through a fourth linkage rod; one end of the second mounting bracket is provided with a second force receiving roller.

[0013] The transmission mechanism comprises a third mounting bracket and a fourth mounting bracket movably mounted on the rotating disc, the third mounting bracket and the front sealing plate are hingedly connected through a fifth linkage rod, and the fourth mounting bracket and the rear sealing plate are hingedly connected through a sixth linkage rod; one end of the third mounting bracket and the fourth mounting bracket is respectively provided with a third force receiving roller.

[0014] The transmission mechanism comprises:

[0015] A mobile assembly movably mounted on the rotating disc;

[0016] The mobile assembly and the front sealing plate are hingedly connected through a seventh linkage rod, and the mobile assembly and the rear sealing plate are fixedly connected.

[0017] The transmission mechanism comprises:

[0018] Two groups of mobile assemblies are arranged side by side and movably mounted on the rotating disc respectively;

[0019] One group of mobile assemblies and the front sealing plate are hingedly connected through an eighth linkage rod, and the other group of mobile assemblies and the rear sealing plate are hingedly connected through a ninth linkage rod.

[0020] The transmission mechanism comprises:

[0021] Two groups of mobile assemblies are arranged side by side and movably mounted on the rotating disc respectively;

[0022] One group of mobile assemblies and the front sealing plate are hingedly connected through a tenth linkage rod, and the other group of mobile assemblies and the rear sealing plate are fixedly connected.

[0023] The mobile assembly comprises:

[0024] A mounting plate fixedly mounted on the rotating disc;

[0025] A third mobile shaft horizontally arranged and slidingly mounted on the mounting plate;

[0026] A fifth mounting bracket fixedly mounted on the front end of the third mobile shaft;

[0027] The first elastic member is arranged on the third moving shaft and abuts against the mounting plate and the fifth mounting bracket at two ends.

[0028] The front sealing plate comprises a connecting portion connected with the transmission mechanism, a main body portion corresponding to the rear sealing plate, and a fulcrum portion, and the main body portion and the connecting portion are located at two sides of the fulcrum portion, respectively.

[0029] The transmission mechanism comprises:

[0030] The first moving shaft and the second moving shaft are arranged in parallel and are relatively slidable.

[0031] The mounting frame is fixedly installed at the front end of the second moving shaft and extends to the front two sides to form the first supporting rod for the rotation installation of one end of the front sealing plate and the second supporting rod for the limiting of the other end of the front sealing plate.

[0032] The rear sealing plate is fixedly installed at the front end of the first moving shaft.

[0033] The front end of the first supporting rod is provided with a rotating seat rotatably installed, the rotating seat extends circumferentially to form a third supporting rod for the installation of the front sealing plate, and the front surface of the third supporting rod is provided with a fourth force roller horizontally installed.

[0034] The lower portion of the rotating seat is provided with a positioning disc fixedly connected with the first supporting rod, the positioning disc is provided with a plurality of positioning grooves and limiting columns arranged at intervals, the rotating seat is provided with an installation hole penetrating from top to bottom, the installation hole is provided with a plugging bolt, a second elastic member and a steel ball arranged from top to bottom in sequence, and the steel ball has a first state of entering the positioning groove under the action of the second elastic member and a second state of separating from the positioning groove and rolling on the upper surface of the positioning disc in the rotating process of the rotating seat.

[0035] The first moving shaft and the second moving shaft are provided with first guide seats matched with the sliding of the first moving shaft and the second moving shaft, the first guide seats are fixedly arranged, the first moving shaft is provided with a second guide seat slidably installed and fixedly installed at the rear end of the second moving shaft, the front portion of the second guide seat is provided with a third guide seat fixedly connected with the first moving shaft and matched with the sliding of the second moving shaft, the first guide seat is located in front of the second guide seat, and the rear sealing plate is fixedly connected with the third guide seat.

[0036] The end of the first moving shaft is provided with a fixedly installed mounting support, the mounting support is provided with a first rolling member, the second guide seat is provided with a second rolling member, the first guide seat and the second guide seat are provided with a first reset member abutting against each other, and the third guide seat and the first guide seat are provided with a second reset member abutting against each other.

[0037] The front sealing plate and the rear sealing plate are closed to form an opening for avoiding the insertion tube.

[0038] The front sealing plate or the rear sealing plate or the front sealing plate and the rear sealing plate are provided with a sealing element which can be pressed by the insertion tube to form an avoiding space.

[0039] The edge position of the front sealing plate is provided with a first protrusion, the edge position of the rear sealing plate is provided with a second protrusion which is oppositely arranged with the first protrusion, the number of the first protrusions and the second protrusions are both two, and the distance between the two first protrusions is matched with the width dimension of the insertion tube.

[0040] The transmission mechanism in the technical solution drives the front sealing plate to swing in the horizontal plane under stress, the rear sealing plate is driven by the transmission mechanism to approach and move away from the front sealing plate, when in the approaching action, the front sealing plate and the rear sealing plate are parallel to each other and clamp the bag opening of the packaging bag with the insertion tube for gas replacement, the process of gas replacement has the advantages of greatly reducing the proportion of external air entering and improving the gas replacement efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is a structure schematic view of the sealing mechanism of the packaging machine gas replacement turntable device of the embodiment.

[0042] Figure 2 It is a structure schematic view of the embodiment according to the installation mode one.

[0043] Figure 3 It is a structure schematic view of the embodiment according to the installation mode two.

[0044] Figure 4 It is a structure schematic view of the embodiment.

[0045] Figure 5 It is a structure schematic view of the embodiment two.

[0046] Figure 6 It is a structure schematic view of the rear sealing plate, the front sealing plate and the transmission mechanism in the embodiment two.

[0047] Figure 7 It is a structure schematic view of the front sealing plate and the rear sealing plate with openings.

[0048] Figure 8 It is a structure schematic view of the embodiment three.

[0049] Figure 9 It is a structure schematic view of the rear sealing plate, the front sealing plate and the transmission mechanism in the embodiment three.

[0050] Figure 10 It is a structure schematic view of the embodiment five.

[0051] Figure 11 This is a schematic diagram of the structure of Example 4.

[0052] Figure 12 This is a schematic diagram of the structure of Example 6.

[0053] Figure 13 This is a schematic diagram of the structure of Example 7.

[0054] Figure 14 This is a schematic diagram of the rotating seat in Example 7. Detailed Implementation

[0055] The embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0056] As shown in the figure, a sealed mechanism of a gas replacement turntable device for a packaging machine includes a rear sealing plate 2, a front sealing plate 3, and a transmission mechanism 4. The rear sealing plate 2 and the front sealing plate 3 correspond to each other and are close to each other to clamp an external insertion tube 11 inserted between them. One end of the front sealing plate 3 is linked to the transmission mechanism 4, and the rear sealing plate 2 is linked to the transmission mechanism 4. When the transmission mechanism 4 is subjected to force, it has a first action of driving the front sealing plate 3 to swing inward along the horizontal plane and driving the rear sealing plate 2 to move closer to the front sealing plate 3, and a second action of driving the front sealing plate 3 to swing outward along the horizontal plane and driving the rear sealing plate 2 to move away from the front sealing plate 3. In this technical solution, when the transmission mechanism is subjected to force, it drives the front sealing plate to swing on the horizontal plane. The rear sealing plate moves closer to and away from the front sealing plate under the drive of the transmission mechanism. When it is in the approaching action, the front sealing plate and the rear sealing plate are parallel to each other and clamp the opening of the packaging bag with the insertion tube for gas replacement. During the gas replacement process, it has the advantages of greatly reducing the proportion of outside air entering and improving the gas replacement efficiency.

[0057] In this technical solution, the rear sealing plate has two movement modes. The first mode is that the rear sealing plate 2 swings under the drive of the transmission mechanism 4 to move closer to and away from the front sealing plate 3.

[0058] When the rear sealing plate adopts the first type of motion described above, its transmission mechanism is provided by the following embodiments;

[0059] Example 1: As Figure 2 , Figure 4 As shown

[0060] The transmission mechanism 4 includes:

[0061] Movable component 47, which is movably mounted on the turntable 1;

[0062] A first linkage rod 411 is provided between the movable component 47 and the front sealing plate 3 to connect the two, and a second linkage rod 412 is provided between the movable component 47 and the rear sealing plate 2 to connect the two.

[0063] The mobile assembly of the above-mentioned embodiment one makes linear forward and backward movement, and drives the front sealing plate and the rear sealing plate to make opposite swinging and apart swinging through the first linkage rod and the second linkage rod, so as to realize the clamping of the cannula.

[0064] Embodiment two: as shown in the figure, Figure 6

[0065] The transmission mechanism 4 comprises a second mounting bracket 421 movably mounted on the rotating disc 1; the second mounting bracket 421 is provided with a third linkage rod 422 hingedly connecting the front sealing plate 3 and the second mounting bracket 421, and the second mounting bracket 421 is provided with a fourth linkage rod 423 hingedly connecting the rear sealing plate 2 and the second mounting bracket 421; one end of the second mounting bracket 421 is provided with a second force receiving roller 424.

[0066] When the second force receiving roller on the second mounting bracket in the above-mentioned embodiment two is subjected to external force, the second mounting bracket rotates, and the end of the second mounting bracket away from the second force receiving roller transmits the force to the front sealing plate and the rear sealing plate through the third linkage rod 422 and the fourth linkage rod 423, so that the front sealing plate and the rear sealing plate make opposite swinging and apart swinging, thereby realizing the clamping of the cannula.

[0067] Embodiment three: as shown in the figure, Figure 9

[0068] The transmission mechanism 4 comprises a third mounting bracket 431 and a fourth mounting bracket 432 movably mounted on the rotating disc 1; the third mounting bracket 431 is provided with a fifth linkage rod 433 hingedly connecting the front sealing plate 3 and the third mounting bracket 431, and the fourth mounting bracket 432 is provided with a sixth linkage rod 434 hingedly connecting the rear sealing plate 2 and the fourth mounting bracket 432; one end of the third mounting bracket 431 and the fourth mounting bracket 432 is respectively provided with a third force receiving roller 435; the above-mentioned embodiment three and the embodiment two have the same principle, and the difference lies in that the embodiment two applies force to the second force receiving roller by a single power source, while the embodiment three applies force to the third force receiving roller 435 on the third mounting bracket 431 and the fourth mounting bracket 432 by double power sources.

[0069] Embodiment four:

[0070] The transmission mechanism 4 comprises: as shown in the figure, Figure 11

[0071] The mobile assembly 47 is two groups and is arranged side by side and is movably mounted on the rotating disc 1;

[0072] ​​​One group of mobile components 47 and the front sealing plate 3 is provided with the eighth linkage rod 451 which hingedly connects the two, and the other group of mobile components 47 and the rear sealing plate 2 is provided with the ninth linkage rod 452 which hingedly connects the two; the working principle in the embodiment is the same as that of embodiment one, the difference lies in that embodiment one is a single power source which applies force to the first linkage rod and the second linkage rod, resulting in that the actions of the front sealing plate and the rear sealing plate are necessarily synchronous, while the embodiment is a double power source which applies force to the eighth linkage rod 451 and the ninth linkage rod 452, and the actions of the front sealing plate and the rear sealing plate can be controlled to be synchronous or asynchronous.

[0073] The second movement form of the rear sealing plate is that the rear sealing plate 2 is fixedly connected with the transmission mechanism 4, and the rear sealing plate 2 is driven by the transmission mechanism 4 to perform linear translation to realize approaching and moving away from the front sealing plate 3.

[0074] When the rear sealing plate adopts the above-mentioned second movement form, the transmission mechanism thereof has the following embodiments;

[0075] Embodiment five: as shown in the figure, Figure 10

[0076] The transmission mechanism 4 comprises:

[0077] The mobile component 47 is movably installed on the rotating disc 1;

[0078] The seventh linkage rod 441 which hingedly connects the mobile component 47 and the front sealing plate 3 is arranged between the two, and the mobile component 47 is fixedly connected with the rear sealing plate 2; the mobile component in the embodiment performs linear forward and backward movement, which can drive the rear sealing plate to perform linear displacement while also driving the front sealing plate to perform swing movement, and finally the two realize the action of clamping and separating from the cannula.

[0079] Embodiment six: as shown in the figure, Figure 12

[0080] The transmission mechanism 4 comprises:

[0081] The mobile component 47 is movably installed on the rotating disc 1;

[0082] One group of mobile components 47 and the front sealing plate 3 is provided with the tenth linkage rod 461 which hingedly connects the two, and the other group of mobile components 47 and the rear sealing plate 2 is fixedly connected, and the working principle in the embodiment is the same as that of embodiment five, the difference lies in that embodiment five is a single power source which drives, and the action realized thereby can only be synchronous, while the power source in the embodiment is two, which drives the rear sealing plate to perform linear movement and drives the front sealing plate to perform swing movement, and the two can be synchronous or asynchronous.

[0083] Embodiment seven: as​​Figure 13 As shown,

[0084] The transmission mechanism 4 comprises:

[0085] A first moving shaft 481 and a second moving shaft 482, which are arranged in parallel and relative sliding;

[0086] A mounting frame 483, which is fixedly installed at the front end of the second moving shaft 482 and extends to the front two sides to provide a first supporting rod 484 for the rotation installation of one end of the front sealing plate 3 and a second supporting rod 485 for the limiting of the other end of the front sealing plate 3;

[0087] The rear sealing plate 2 is fixedly installed at the front end of the first moving shaft 481;

[0088] The front end of the first supporting rod 484 is provided with a rotation seat 486 which is rotationally installed, and the rotation seat 486 extends a third supporting rod 487 in the circumferential direction for the installation of the front sealing plate 3, and the front surface of the third supporting rod 487 is provided with a fourth force roller 488 which is horizontally installed; in the embodiment, the first moving shaft can drive the rear sealing plate to move forward when moving forward and to move backward when moving backward, the second moving shaft drives the front sealing plate to move backward and forward, and the approaching and moving away actions of the front sealing plate and the rear sealing plate are realized, before the approaching action, the front sealing plate is swung in the horizontal plane by the external force to make the front sealing plate and the rear sealing plate parallel to each other, and after the moving away action, the front sealing plate is swung in the horizontal plane by the external force; when the approaching action is in the approaching action, the front sealing plate and the rear sealing plate clamp the bag opening of the packaging bag with the inserted pipe to perform the gas replacement, and the process of the gas replacement has the advantages of greatly reducing the proportion of the external air entering and improving the gas replacement efficiency.

[0089] The front sealing plate 3 and the rear sealing plate 2 in the seventh embodiment can be located below the sub-clamping mechanism 14 or above the sub-clamping mechanism.

[0090] When the fourth force roller is subjected to the horizontal thrust, the front sealing plate on the third supporting rod is rotated in the horizontal plane, when the fourth force roller is subjected to the inward force, the front sealing plate is swung to the parallel state with the rear sealing plate, and when the fourth force roller is subjected to the outward force, the front sealing plate is swung to the state of the included angle with the rear sealing plate.

[0091] The lower portion of the rotating seat 486 is provided with a positioning disc 49 fixedly connected with the first supporting rod 484, the positioning disc 49 is provided with a plurality of positioning grooves 491 and limiting columns 492 arranged at intervals, the rotating seat 486 is provided with an installation hole 4861 penetrating from top to bottom, the installation hole 4861 is provided with a plugging bolt 4862, a second elastic member 4863 and a steel ball 4864 arranged from top to bottom, the steel ball 4864 has a first state of entering the positioning groove 491 under the action of the second elastic member 4863 and a second state of separating from the positioning groove 491 and rolling on the upper surface of the positioning disc 49 during the rotation of the rotating seat 486; the second elastic member always abuts against the steel ball to make the steel ball closely adhere to the upper surface of the positioning disc during the rotation of the rotating seat, the positioning groove has two, and the entering of the steel ball into the positioning groove represents the reaching of the limit position of swinging, and the positioning groove plays a positioning role on the third supporting rod.

[0092] The number of the positioning grooves can also be more than two, and the positioning grooves except the two ends can play a role of decelerating the third supporting rod.

[0093] The first moving shaft 481 and the second moving shaft 482 are provided with a first guide seat 61 slidingly matched with the two, the first guide seat 61 is fixedly arranged, the first moving shaft 481 is provided with a second guide seat 62 slidingly arranged and fixedly arranged at the rear end of the second moving shaft 482, the second guide seat 62 is provided with a third guide seat 63 fixedly connected with the first moving shaft 481 and slidingly matched with the second moving shaft 482 in front, the first guide seat 61 is located in front of the second guide seat 62, and the rear sealing plate 2 is fixedly connected with the third guide seat 63; the first guide seat, the second guide seat and the third guide seat respectively play a role of ensuring that the first moving shaft and the second moving shaft are parallel to each other, and improve the sliding precision of the two.

[0094] The end of the first moving shaft 481 is provided with a fixedly arranged mounting support 64, the mounting support 64 is provided with a first rolling member 65, the second guide seat 62 is provided with a second rolling member 66, the second guide seat 62 and the first guide seat 61 are provided with a first reset member 67 abutting against the two, and the third guide seat 63 and the first guide seat 61 are provided with a second reset member 68 abutting against the two; the embodiment adopts a driving cam, the first rolling member and the second rolling member correspond to different rolling grooves of the driving cam respectively, the two rolling groove tracks are different, so that the first moving shaft and the second moving shaft have different forward and backward movement tracks, and the first reset member and the second reset member improve the pre-tightening force of reset.

[0095] The moving assembly 47 in the above-mentioned embodiment one, embodiment four, embodiment five and embodiment six can adopt the same structure or different structures, when the moving assemblies in the above-mentioned multiple embodiments adopt the same structure, the moving assembly comprises:

[0096] Mounting plate 471 is fixedly mounted on the turntable 1;

[0097] The third moving axis 472 is horizontally arranged and slidably mounted on the mounting plate 471;

[0098] The fifth mounting bracket 473 is fixedly mounted on the front end of the third moving shaft 472;

[0099] The third moving shaft 472 is fitted with a first elastic element 474 whose two ends respectively abut against the mounting plate 471 and the fifth mounting bracket 473. The end of the third moving shaft 472 is fitted with a first force roller 475. After the first force roller is subjected to force, it drives the third moving shaft to move linearly. At the same time, the fifth mounting bracket also moves linearly. The first elastic element provides a preload force for the third moving shaft to reset.

[0100] The front sealing plate 3 includes a connecting part 31 that is linked to the transmission mechanism, a main body part 32 corresponding to the rear sealing plate 2, and a fulcrum part 33. The main body part 32 and the connecting part 31 are located on both sides of the fulcrum part 33. The connecting part can be subjected to external force, thereby driving the main body part to swing around the fulcrum part.

[0101] The front and rear sealing plates in embodiments one to six of this technical solution have two installation methods;

[0102] Installation method one: It also includes a turntable 1, and the turntable 1 is provided with several sets of sub-clamping mechanisms 14 in the circumference. The front sealing plate 3 and the rear sealing plate 2 are respectively rotatably installed on the sub-clamping mechanisms 14.

[0103] Preferred methods such as Figure One As shown, the sub-clamping mechanism is provided with a first bracket 12 for rotatably mounting the front sealing plate 3 and a second bracket 13 for rotatably mounting one end of the rear sealing plate 2. The sub-clamping mechanism 14 is provided with two mounting shafts 15. The first bracket 12 and the second bracket 13 are respectively fixedly mounted on the mounting shafts 15, or the first bracket 12 and the second bracket 13 are integrally formed with the mounting shafts. In this installation method, the front sealing plate 3 and the rear sealing plate 2 can be located below the sub-clamping mechanism 14, such as... Figure 1 As shown, it can also be located above the sub-clamping mechanism (not shown).

[0104] Installation method two: It also includes a turntable 1, the front sealing plate 3 and the rear sealing plate 2 are respectively rotatably mounted on the turntable 1, and the outer circumference of the turntable 1 is provided with a clearance groove 18 for the movement of the rear sealing plate 2 and the transmission mechanism 4.

[0105] Preferred methods such as Figure ThreeAs shown, the rotating disc is provided with a first supporting plate 16 for rotatably mounting the front sealing plate 3 and a second supporting plate 17 for rotatably mounting one end of the rear sealing plate 2, and the first supporting plate 16 and the second supporting plate 17 are fixedly mounted on the rotating disc 1 or the first supporting plate 16 and the second supporting plate 17 are integrally formed with the rotating disc; the front sealing plate 3 and the rear sealing plate 2 in the installation mode can be located below the sub-clamping mechanism 14 which is not shown, or above the sub-clamping mechanism, such as Figure 3 As shown.

[0106] Both of the above installation modes can be realized, and the difference between them is only the position.

[0107] The front sealing plate 3 and the rear sealing plate 2 form an opening 7 for avoiding the cannula 11 after being closed;

[0108] The front sealing plate 3 or the rear sealing plate 2 or both of them are provided with a sealing member 71, which can be extruded by the cannula 11 to form an avoiding space.

[0109] There are three ways for avoiding the cannula between all the front sealing plates and the rear sealing plates in the technical solution: one is that the front sealing plate or the rear sealing plate or both of them are provided with a sealing member, which can be extruded by the cannula to form an avoiding space, and the sealing member can make the bag mouth have better sealing effect;

[0110] The second way is that the front sealing plate and the rear sealing plate form an opening for avoiding the cannula after being closed, and the opening can be arranged on any one of the front sealing plate and the rear sealing plate or both of them.

[0111] The third way is more preferable, that is, the opening and the sealing member are arranged on both the front sealing plate and the rear sealing plate, such as:

[0112] 1. The front sealing plate is provided with the opening, and the rear sealing plate is provided with the sealing member;

[0113] 2. The rear sealing plate is provided with the opening, and the front sealing plate is provided with the sealing member;

[0114] 3. Both the front sealing plate and the rear sealing plate are provided with the opening, and both of them are provided with the sealing member.

[0115] The above-mentioned sealing member adopts a flexible rubber strip tube, which can be mounted at the edge position of the front sealing plate and the rear sealing plate or wound and arranged on the front sealing plate and the rear sealing plate, and has the advantage of good sealing effect.

[0116] In addition, in the case of accidental errors such as no packaging bag on the sub-clamping mechanism and the cannula being inserted between the front sealing plate and the rear sealing plate, the opening can make the cannula easy to be pulled out.

[0117] For the third way of avoiding the insertion tube, the edge of the front sealing plate 3 is provided with a first protrusion 72, and the edge of the rear sealing plate 2 is provided with a second protrusion 73 opposite to the first protrusion 72, the number of the first protrusion and the second protrusion 73 is two respectively, and the distance between the two first protrusions 72 is matched with the width of the insertion tube 11, if the first protrusion and the second protrusion are not provided, there will be a gap at both ends of the insertion tube wrapped by the sealing element, and the first protrusion and the second protrusion can eliminate the gap at both ends of the insertion tube blocked by the sealing element.

[0118] In the description of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0119] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0120] Skilled persons should know: although the present application has been described according to the above specific embodiments, the inventive idea of the present application is not limited to this invention, any modification using the inventive idea will be included in the scope of protection of the present patent.

Claims

1. A closure mechanism for a gas displacement carousel of a packaging machine, characterized in that: It includes back sealing plate (2), front sealing plate (3) and transmission mechanism (4), the back sealing plate (2) and front sealing plate (3) correspond to each other and two are close to each other for clamping the external cannula (11) inserted between them;The front sealing plate (3) is connected with the transmission mechanism (4) at one end, the back sealing plate (2) is connected with the transmission mechanism (4), the transmission mechanism (4) has the first action of driving the front sealing plate (3) to swing along the horizontal plane and driving the back sealing plate (2) to be close to the front sealing plate (3) after being stressed, and the second action of driving the front sealing plate (3) to swing along the horizontal plane and driving the back sealing plate (2) to be away from the front sealing plate (3); The back sealing plate (2) is fixedly connected with the transmission mechanism (4), and the back sealing plate (2) is driven by the transmission mechanism (4) to linearly translate to realize the approach and the away from the front sealing plate (3); The transmission mechanism (4) includes a mounting frame (483), the mounting frame extends to the front two sides to extend out the first supporting rod (484) for the front sealing plate (3) one end rotating installation, the front end of the first supporting rod (484) is provided with rotatingly installed rotating seat (486); The lower portion of the rotating seat (486) is provided with the positioning disc (49) fixedly connected with the first supporting rod (484), the positioning disc (49) is provided with a plurality of interval arranged positioning grooves (491) and limiting columns (492), the rotating seat (486) is provided with the mounting hole (4861) penetrating from top to bottom, the mounting hole (4861) is provided with the plugging bolt (4862), the second elastic member (4863) and the steel ball (4864) sequentially arranged from top to bottom, the steel ball (4864) has the first state of entering the positioning groove (491) under the action of the second elastic member (4863) and the second state of separating from the positioning groove (491) and rolling on the upper surface of the positioning disc (49) in the rotating process of the rotating seat (486); The front sealing plate (3) includes a fulcrum portion (33).

2. The closure mechanism for a packaging machine gas displacement carousel apparatus of claim 1, wherein: The transmission mechanism (4) includes: A moving assembly (47) movably mounted on the rotating disc (1); A seventh linkage rod (441) hingedly connecting the moving assembly (47) and the front sealing plate (3) is arranged between the moving assembly (47) and the front sealing plate (3).

3. The closure mechanism for a packaging machine gas displacement carousel apparatus of claim 1, wherein: The transmission mechanism (4) includes: Two groups of moving assemblies (47) are movably mounted on the rotating disc (1) side by side; One group of moving assemblies (47) and the front sealing plate (3) are hingedly connected by a tenth linkage rod (461), and the other group of moving assemblies (47) and the back sealing plate (2) are fixedly connected.

4. The closing mechanism of a gas displacement carousel of a packaging machine according to claim 2 or 3, characterized in that: The moving assembly (47) includes: An installation plate (471) is fixedly mounted on the rotating disc (1); A third moving shaft (472) is horizontally arranged and slidably mounted on the installation plate (471); A fifth mounting bracket (473) is fixedly mounted on the front end of the third moving shaft (472). The third moving shaft (472) is sleeved with a first elastic member (474) having two ends abutting against the mounting plate (471) and the fifth mounting bracket (473) respectively, and a first force roller (475) is mounted at the end of the third moving shaft (472).

5. The closure mechanism for a packaging machine gas displacement carousel apparatus of claim 1, wherein: The front sealing plate (3) further comprises a connecting part (31) connected with the transmission mechanism and a main body part (32) corresponding to the rear sealing plate (2), and the main body part (32) and the connecting part (31) are respectively located at two sides of the fulcrum part (33).

6. The closure mechanism for a packaging machine gas displacement carousel apparatus of claim 1, wherein: The transmission mechanism (4) further comprises: a first moving shaft (481) and a second moving shaft (482) which are parallel arranged and relatively slide; The mounting bracket (483) is fixedly mounted at the front end of the second moving shaft (482) and extends to the two sides of the front end to form a second supporting rod (485) for limiting the other end of the front sealing plate (3); The rear sealing plate (2) is fixedly mounted at the front end of the first moving shaft (481); The circumferential extension of the rotating seat (486) is a third supporting rod (487) for mounting the front sealing plate (3), and the front surface of the third supporting rod (487) is provided with a horizontally mounted fourth force roller (488).

7. The closure mechanism for a packaging machine gas displacement carousel apparatus of claim 6, wherein: The first moving shaft (481) and the second moving shaft (482) are provided with a first guide seat (61) matched with the sliding of the two, and the first guide seat (61) is fixedly arranged.

8. The closure mechanism for a packaging machine gas displacement carousel apparatus of claim 7, wherein: The end of the first moving shaft (481) is provided with a fixedly mounted mounting support (64), and the mounting support (64) is provided with a first rolling member (65).

9. The closure mechanism for a packaging machine gas displacement carousel apparatus of claim 1, wherein: The first moving shaft (481) and the second moving shaft (482) are provided with a first guide seat (61) matched with the sliding of the two, and the first guide seat (61) is fixedly arranged.

10. The closure mechanism for a gas displacement carousel of a packaging machine according to claim 1 or 9, characterized in that: The front sealing plate (3) and the rear sealing plate (2) form an opening (7) for avoiding the cannula (11) after being closed.

11. The closure mechanism for a packaging machine gas displacement carousel apparatus of claim 9, wherein: The front sealing plate (3) or the rear sealing plate (2) or the front sealing plate (3) and the rear sealing plate (2) are provided with a sealing member (71), and the sealing member (71) can be extruded by the cannula (11) to form an avoiding space. The edge position of the front sealing plate (3) is provided with a first protrusion (72), and the edge position of the rear sealing plate (2) is provided with a second protrusion (73) arranged opposite to the first protrusion (72), the number of the first protrusion and the second protrusion (73) is two respectively, and the distance between the two first protrusions (72) is matched with the width dimension of the cannula (11).

Images