Vacuum bin uncovering mechanism and vacuum sealing machine

Abstract

The invention discloses a vacuum bin uncovering mechanism and a vacuum sealing machine, and belongs to the technical field of food packaging equipment.The vacuum bin uncovering mechanism comprises two disc bodies which are arranged in a spaced mode, and the disc bodies are configured to be capable of synchronously rotating around the axes of the disc bodies; the vacuum bins are arranged around the axis of the disc body in a circumferential array mode, and each vacuum bin comprises a bin body and a bin cover rotationally connected with the bin body; each bin body is provided with at least one first cam face, and the first cam faces are arranged around the axis of the disc body in a circumferential array mode. The bin cover is provided with a connecting part matched with the first cam face, and when the disc body rotates around the axis of the disc body, the connecting part of each vacuum bin can sequentially pass through the first cam face so that the bin cover can be switched between the bin body opening state and the bin body closing state. Through interaction of the first cam surface and the connecting part of the vacuum bin, when the disc body rotates around the axis, the bin cover can be opened and closed through the second cam surface, and opening and closing of the bin cover are achieved through the rotation action of the disc body.

Description

Technical Field

[0001] The present invention relates to the technical field of food packaging equipment, and in particular to a vacuum bin cover opening mechanism and a vacuum sealing machine. Background Art

[0002] Vacuum sealing packaging equipment is used in the subsequent packaging field of agricultural and sideline products processing and production. As long as it is used for thermoplastic sealing of plastic food packaging bags, it is a commonly used sealing packaging equipment in this field. When in use, the packaging bag needs to be placed in a vacuum chamber, and then the lid of the vacuum chamber is closed to evacuate the vacuum, and then the packaging bag in the vacuum chamber is thermoplastically sealed.

[0003] In order to improve the working efficiency of the packaging machine, a rotary vacuum sealing machine is provided, which includes two discs set at intervals, and multiple vacuum chambers are evenly arranged along the circumferential direction between the discs. The discs can rotate around an axis to drive the multiple vacuum chambers to rotate around the axis. During the rotation, the vacuum chamber can perform vacuuming, heat shrink sealing, vacuum breaking and material unloading processes. Correspondingly, the chamber cover of the vacuum chamber needs to be switched between open and closed. How to open and close the chamber cover efficiently and accurately is crucial to the efficient operation of the vacuum sealing machine. Summary of the invention

[0004] The object of the present invention is to solve the above problems and provide a vacuum bin cover opening mechanism and a vacuum packaging machine.

[0005] To achieve the above purpose, the technical solution of the present invention is: a vacuum bin cover opening mechanism, comprising: The discs include two discs spaced apart from each other, and the discs are configured to be able to rotate synchronously around their axes; The vacuum chamber is arranged in a circular array around the axis of the disc body, and includes a chamber body and a chamber cover rotatably connected to the chamber body; First cam surfaces, each of the bins is provided with at least one, arranged in a circular array around the axis of the disc body; The chamber cover is provided with a connecting portion adapted to the first cam surface. When the disk body rotates around its axis, the connecting portion of each vacuum chamber can pass through the first cam surface in sequence to switch the chamber cover between the open and closed states of the chamber body.

[0006] Furthermore, when the disk body rotates once around the axis, the cover of each vacuum chamber is switched once between an open state and a closed state.

[0007] Furthermore, the first cam surface includes a guide section, a retaining section and a closing section arranged around the support shaft, and the retaining section is located between the guide section and the closing section; when the connecting portion cooperates with the closing section, the bin cover is in a state of opening the bin body.

[0008] Furthermore, the guiding section is located on a side of the retaining section close to the central area of ​​the disc body.

[0009] Furthermore, a cam plate is detachably fixed to the plate body, a groove body is provided on the cam plate, and the first cam surface is a side surface of the groove body.

[0010] Furthermore, each of the vacuum chambers is correspondingly provided with two first cam surfaces, and the two cam surfaces are respectively provided on the sides of the two disk bodies close to each other.

[0011] Furthermore, control valves are provided at both ends of each vacuum chamber, and multiple second cam surfaces are provided on the two disks corresponding to the multiple vacuum chambers; the control valve is configured so that when passing through the second cam surface, the second cam surface squeezes the control valve to switch the control valve from a closed state to an open state.

[0012] Furthermore, a central stop gear is coaxially arranged at the center of at least one disk body, a vacuum bin stop gear is coaxially arranged at the center of each vacuum bin, an intermediate gear is arranged between each vacuum bin stop gear and the central stop gear, the vacuum bin stop gear is non-rotatably matched with the vacuum bin, and the central stop gear is rotationally matched with the disk body.

[0013] Furthermore, connecting shafts are coaxially arranged at both ends of the bin body, the connecting shafts are rotationally connected to the disk body, and the vacuum bin stop gear is non-rotationally matched with the connecting shafts.

[0014] Furthermore, the present application also provides a vacuum sealing machine, comprising any of the vacuum chamber cover opening mechanisms described above, and also comprising a driving gear, which is drivingly connected to the disk body and is used to drive the two disk bodies to rotate around their axes.

[0015] The present invention discloses a vacuum bin cover opening mechanism and a vacuum sealing machine, which have the following beneficial effects compared with the prior art: through the interaction between a first cam surface and a connecting portion of the vacuum bin, the bin cover can be opened and closed by the first cam surface when a disk body rotates around an axis, and the bin cover can be opened and closed by utilizing the rotation of the disk body itself, the structure is simple, can adapt to the compact design of the equipment, and has low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a vacuum bin cover opening mechanism of the present invention Figure 1 .

[0017] Figure 2 A schematic diagram of the structure of a vacuum bin cover opening mechanism of the present invention Figure 2 .

[0018] Figure 3 for Figure 2 The figure shows a partially enlarged structural schematic diagram of point A in a vacuum bin cover opening mechanism of the present invention.

[0019] Figure 4 The figure is a schematic structural diagram of a second cover-opening cam in a vacuum bin cover-opening mechanism of the present invention.

[0020] Figure 5 The structure of the vacuum chamber in the vacuum chamber cover opening mechanism of the present invention is schematically shown. Figure 1 .

[0021] Figure 6 The structure of the vacuum chamber in the vacuum chamber cover opening mechanism of the present invention is schematically shown. Figure 2 .

[0022] Figure 7 for Figure 6 The figure shows a partially enlarged structural schematic diagram of position C in a vacuum bin cover opening mechanism of the present invention.

[0023] Figure 8 for Figure 5 The figure shows a partially enlarged structural schematic diagram of position D in a vacuum bin cover opening mechanism of the present invention.

[0024] Fig. 9 for Figure 8 The figure shows a partially enlarged structural schematic diagram of position D-1 in a vacuum bin cover opening mechanism of the present invention.

[0025] Fig.10 for Figure 6 The figure shows a partially enlarged structural schematic diagram of position E in a vacuum bin cover opening mechanism of the present invention.

[0026] Fig.11 The present invention is a schematic diagram of the structure of the interior of a vacuum bin in a vacuum bin cover opening mechanism.

[0027] Fig.12 for Fig.11 The figure shows a partially enlarged structural schematic diagram of position B in a vacuum bin cover opening mechanism of the present invention.

[0028] Fig.13 for Fig.12 The diagram is a partial enlarged structural diagram of position B-1 in a vacuum bin cover opening mechanism of the present invention.

[0029] Fig.14 The present invention is a schematic structural diagram of a vacuum sealing machine.

[0030] In the figure: 1, vacuum chamber; 10, chamber body; 11, chamber cover; 12, support rod; 13, valve body structure; 14, connecting shaft; 2, bag spreading mechanism; 21, first power telescopic rod; 22, clamping member; 220, silicone pad; 221, second driving pin; 222, rolling member; 23, support seat; 24, first movable seat; 240, second strip hole; 241, driving surface; 242, second arm; 243, pin shaft; 245, first clamping jaw; 246, second clamping jaw; 25, first pin; 201, first pin shaft; 3, rotating rod; 31, first arm; 32, driving seat; 320, driving roller; 321, tension spring; 33, driving plate; 331, Connecting rod; 332, sliding member; 330, driving inclined plane; 34, second movable seat; 340, connecting roller; 341, arc-shaped portion; 35, guiding member; 36, second power telescopic rod; 37, control valve; 41, air path connection structure; 5, disk body; 51, first turntable; 510, center stop gear; 511, intermediate gear; 512, vacuum chamber stop gear; 52, second turntable; 520, outer gear ring; 521, driving gear; 6, cam disk; 60, passing path; 61, first cam surface; 610, guiding section; 611, holding section; 612, closing section; 63, second cam; 631, second cam surface; 64, cover opening roller. DETAILED DESCRIPTION

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and thus only show the components related to the present invention.

[0032] Embodiment 1 Please refer to Figure 1-4 The technical solution of the present invention is: a vacuum chamber 1 cover opening mechanism, comprising: The disk bodies 5 include two disk bodies 5 spaced apart from each other, and the disk bodies 5 are configured to be able to rotate synchronously around their axes; The vacuum chamber 1 is arranged in a circular array around the axis of the disc body 5, and includes a chamber body 10 and a chamber cover 11 rotatably connected to the chamber body 10; First cam surfaces 61, each of the bin bodies 10 is provided with at least one, and are arranged in a circular array around the axis of the disk body 5; The chamber cover 11 is provided with a connecting portion adapted to the first cam surface 61 . When the disk body 5 rotates around its axis, the connecting portion of each vacuum chamber 1 can pass through the first cam surface 61 in sequence to switch the chamber cover 11 between the open and closed states of the chamber body 10 .

[0033] Specifically, it should be noted that reference 5, Figure 6 , Fig.14The specific structure of the vacuum sealer includes two disc bodies 5 arranged at intervals, which are called the first turntable 51 and the second turntable 52 for the convenience of description. The center positions of the first turntable 51 and the second turntable 52 are connected by a shaft (not shown in the figure) so that the first turntable 51 and the second turntable 52 can rotate synchronously. The vacuum chamber 1 includes a chamber body 10 and a chamber cover 11. The chamber cover 11 and the chamber body 10 are rotated together through a connecting shaft 14, wherein the axis of the connecting shaft 14 is arranged parallel to the axis of the disc body 5. The chamber cover 11 has a closed state for closing the chamber body 10 and an open state for opening the chamber body 10. The chamber cover 11 can switch between the two states when rotating around the axis of the connecting shaft 14. When the chamber cover 11 closes the chamber body 10, the interior of the chamber body 10 can be sealed. At this time, evacuating the vacuum chamber 1 can maintain the vacuum degree inside. Figure 7 , Fig.10 A connection portion is provided at at least one end of the bin cover 11. Specifically, the connection portion is a cover opening roller 64 that is detachably fixed to the side of the bin cover 11. The axis of the cover opening roller 64 is parallel to the connection shaft 14. It is understandable that the connection portion can also be a rigid shaft that is parallel to the connection shaft 14. Figure 2 , Figure 3 Each vacuum chamber 1 has at least one first cam surface 61. When the two ends of the vacuum chamber 1 are connected to the first turntable 51 and the second turntable 52, the cover opening roller 64 is adapted to the first cam surface 61. Fig.14 , wherein the vacuum chamber 1 is configured such that when the plate 5 rotates around the axis, the posture of the vacuum chamber 1 remains unchanged. When the plate 5 rotates around the axis to drive the vacuum chamber 1 to move circumferentially, the cover opening roller 64 on the chamber cover 11 of the vacuum chamber 1 will move relative to the first cam surface 61. Figure 1-Figure 3 , the disk body 5 rotates along the rotation direction, and the cover opening roller 64 will pass through the first cam surface 61 in sequence along the passing path 60. The first cam surface 61 drives the cover opening cam to switch the bin cover 11 from the closed state to the open state. After passing the first cam surface 61, the bin cover 11 is closed again under the action of gravity, thereby achieving the effect of automatically opening and closing the bin cover 11 of the vacuum bin 1. Through the above-mentioned setting method, through the interaction between the first cam surface 61 and the connecting part of the vacuum bin 1, the bin cover 11 can be opened and closed through the first cam surface when the disk body 5 rotates around the axis, and the opening and closing of the bin cover 11 is realized by the rotation of the disk body 5 itself. The structure is simple, can adapt to the compact design of the equipment, and has low manufacturing cost.

[0034] Further, as a specific implementation, when the tray body 5 rotates around the axis for one circle, the bin cover 11 of each vacuum bin 1 switches between the open state and the closed state once. Specifically, when the tray body 5 rotates around the axis for one circle, the bin cover 11 can switch between the open state and the closed state once, and can realize a working cycle of loading, vacuuming, sealing and unloading. This arrangement sets a loading and unloading station around the tray body 5, ensuring that there is enough space around the tray body 5 to configure the station.

[0035] Further, as a specific implementation method, refer to Figure 2 , Figure 3 The first cam surface 61 includes a guide section 610, a retaining section 611 and a closing section 612 arranged around the support shaft, and the retaining section 611 is located between the guide section 610 and the closing section 612; when the connecting portion cooperates with the closing section 612, the bin cover 11 is in a state of opening the bin body 10. Specifically, refer to Figure 2 When the disc body 5 rotates around the axis in the direction of rotation in the figure, the posture of the first cam surface 61 is driven to change, and the posture of the bin body 10 does not change, so that the opening cam of the bin cover 11 changes its position along the figure. When the opening cam just enters the guide section 610, the bin cover 11 is in a state of closing the bin body 10. As the disc body 5 rotates, the opening roller 64 enters the guide section 610 and moves toward the holding section 611. During this process, the first cam surface 61 drives the opening roller 64 to gradually open the bin cover 11. When it moves to the holding section 611, the holding section 611 keeps the bin cover 11 in an open state. At this time, it is convenient to export the material in the bin body 10 and install a new packaging bag here. As the disc body 5 continues to rotate, the opening cam moves to the closing section 61 2. The bin cover 11 gradually closes the bin body 10 under the action of its own gravity. After the cover opening roller 64 leaves the closing section 612, the bin cover 11 remains in a closed state. At this time, the vacuum bin 1 is also evacuated, and the interior is in a vacuum state. It remains in a closed state under the action of negative pressure. At this stage, the vacuum packaging bag can be heat-shrink sealed in the vacuum bin 1. The disk body 5 continues to rotate, and the cover opening roller 64 enters the opening position of the guide section 610 again. At this time, the vacuum in the vacuum bin 1 is broken and can be opened when passing through the first cam. The vacuuming and breaking operations can be performed by any method in the prior art, which is not specifically limited here. Those skilled in the art should understand that the sealing operation in the vacuum bin 1 and the clamping structure of the packaging bag are referred to below.

[0036] Further, as a specific implementation, the guide section 610 is located on a side of the holding section 611 close to the center area of ​​the disk body 5. Figure 2 , Figure 3The first cam surface 61 is arranged around the axis of the connection area between the vacuum chamber 1 and the disk body 5. By arranging the guide section 610 on the side of the retaining section 611 close to the central area of ​​the disk body 5, the chamber cover 11 can be arranged on the side away from the center of the disk body 5. This arrangement can make the opening of the chamber body 10 face outward when the chamber cover 11 is opened, which is convenient for opening the chamber cover 11 and facilitating the arrangement of the loading and unloading stations.

[0037] Further, as a specific implementation method, refer to Figure 2 The disc body 5 is detachably fixed with a cam disc 6, and a groove body is provided on the cam disc 6, and the first cam surface 61 is the side surface of the groove body. By providing a groove body on the cam disc 6, the groove body includes two side surfaces arranged at equal distances, and the inner side surface of the groove body is the first cam surface 61, when working, the cover opening roller 64 can enter the groove body, and the cover opening roller 64 is limited and guided by the two side surfaces of the groove body, thereby improving the smoothness of the guidance. On the other hand, it can be understood that since the first cam surface 61 includes an area with a large bending angle, when the cover opening roller 64 passes through the area with a large bending angle, the bin cover 11 may swing, and the cover opening roller 64 is guided by the two side surfaces of the groove body, thereby preventing the bin cover 11 from swinging during the cover opening process, thereby improving stability. Further, when the cover opening roller 64 moves from the holding section 611 to the closing section 612, the cover opening roller 64 can be driven and guided by the side surfaces arranged at equal distances between the groove body and the closing section 612, thereby ensuring the smooth closing of the bin cover 11.

[0038] Furthermore, as a specific implementation, each of the vacuum chambers 1 is correspondingly provided with two first cam surfaces 61 , and the two cam surfaces are respectively provided on the surfaces of the two disk bodies 5 that are close to each other.

[0039] Specifically, as a preferred embodiment, a first cam surface 61 is adapted at both ends of each vacuum bin 1, and a cover opening roller 64 is provided at the connecting section of the bin cover 11 of the vacuum bin 1. The two first cam surfaces 61 are respectively arranged on a surface of the first turntable 51 and the second turntable 52 that are close to each other. Through this arrangement, the bin cover 11 can be driven simultaneously at both ends to ensure the driving effect.

[0040] Further, as a specific implementation method, refer to Figure 4-Figure 9 , Figure 11-13 A control valve 37 is provided at both ends of each vacuum chamber 1, and a plurality of second cam surfaces 631 are provided on the two disks 5 corresponding to the plurality of vacuum chambers 1; the control valve 37 is configured so that when passing through the second cam surface 631, the second cam 63 faces and squeezes the control valve 37 to switch the control valve 37 from a closed state to an open state.

[0041] Specifically, refer to Figure 5 , Figure 6, is the specific structure of the vacuum bin, a clamping structure for clamping the packaging bag and a structure for sealing the packaging bag are arranged in the bin body of the vacuum bin, and its specific structure is: multiple bag unfolding mechanisms 2, specifically, the bag unfolding mechanism 2 includes a support seat 23, the support seat 23 is a rigid plate-like member, and is detachably fixedly connected to the side walls of the vacuum bin 1 and the bin body 10, one plate surface of the support seat 23 is a first supporting surface, a first power telescopic rod 21 is arranged on the side wall of the bin body 10 away from the bin cover 11, and on the first supporting surface, two first movable seats 24 are symmetrically arranged at intervals about the first power telescopic rod 21, and the first movable seats 24 can slide with the first supporting surface, a clamping member 22 is arranged at the end of the power telescopic rod, and the power telescopic rod can drive the clamping member 22 to move along the direction of the first supporting surface, and two second driving pins 221 are symmetrically arranged on the lower surface of the clamping member 22, and a driving surface 241 adapted to the second driving pin 221 is arranged on the two first movable seats 24, refer to Fig.12 , Fig.13 In the initial state, the second driving pin 221 is located at one end of the driving surface 241. In specific operation, a clamping assembly is provided at the end of the first movable seat 24. The two sides of the packaging bag can be clamped by the two clamping assemblies on the two first movable seats 24. The bin cover 11 of the vacuum bin 1 seals the mouth of the bin body 10. At this time, the bin cover 11 of the vacuum bin 1 corresponds to the clamping member 22. A heating element is provided on the bin cover 11. Then the vacuum bin 1 is evacuated to suck the air in the packaging bag. Then the first power telescopic rod 21 is extended to drive the clamping member 22 to move toward the bin cover 11. During the movement, the second driving pin 221 can act on the driving surface 241 to drive the two first movable seats 24 away from each other, so that the packaging bag can be pulled to both sides to ensure that the mouth of the packaging bag can be flattened, and during the movement of the clamping member 22, the mouth of the packaging bag can be squeezed toward the heating element on the compartment cover 11, and the heating element is used to heat and seal it. In this way, the first movable seat 24 can be driven by the cooperation of the second driving pin 221 and the driving surface 241 while the packaging bag is sealed, so as to achieve the effect of expanding the packaging bag, thereby improving the sealing quality of the packaging bag.

[0042] Specifically, the first power telescopic rod 21 can be any one of a pneumatic telescopic rod and an electric telescopic rod, wherein the first power telescopic rod 21 is connected to one of the control valves, and when the control valve is pushed by the second cam surface to switch to an open state, it starts to extend, and when the control valve leaves the second cam surface, the power telescopic rod retracts to an initial state. When the power telescopic rod is an electric telescopic rod, the control valve adopts a micro switch or a proximity switch, and when the power telescopic rod is a pneumatic telescopic rod, the control valve adopts an extrusion control valve.

[0043] Further, as a preferred embodiment, one end of the second driving pin 221 is connected to the clamping member 22, and the other end is provided with a rolling member 222 coaxially rotatably adapted to the driving surface 241. Specifically, the rolling member 222 is preferably a rolling bearing, and by providing the rolling member 222, the sliding friction between the driving surface 241 and the second driving pin 221 can be converted into rolling friction, thereby reducing friction and wear, and increasing the service life of the driving surface 241 and the second driving pin 221.

[0044] As a specific implementation, perpendicular to the first support surface, a first pin 25 is provided on the support seat 23, which is located on one side of the driving surface 241. A second strip hole 240 is also provided on the first movable seat 24. The first pin 25 is guided and matched with the second strip hole 240, and the second strip hole 240 is extended in a direction away from the driving surface 241. Specifically, the second strip hole 240 is arranged in a straight line and is perpendicular to the telescopic direction of the first power telescopic rod 21. By matching the first pin 25 with the second strip hole 240, the first movable seat 24 can be limited in the telescopic direction of the power telescopic rod, and the first movable seat 24 can be ensured to move in a direction perpendicular to the telescopic direction of the power telescopic rod, so as to ensure the bag unfolding action.

[0045] Further, the specific structure of the clamping jaw assembly is as follows: the clamping jaw assembly includes a second arm 242 hingedly connected to the first movable seat 24, a rotating rod 3 drivingly connected to the second arm 242, one of the end of the rotating rod 3 and the second arm 242 is provided with a first strip hole, and the other is provided with a first pin 201 extending into the first strip hole, and when the clamping assembly is in a clamping state, the length direction of the first strip hole is perpendicular to the telescopic direction of the first power telescopic rod 21. Specifically, the second arm 242 is hingedly connected to the first movable seat 24 through a pin 243, the second arm 242 can rotate around the pin 243, and the rotating rod 3 can drive the second arm 242 to rotate around the pin 243, thereby realizing the opening and closing of the clamping assembly, wherein the first strip hole (not shown in the figure) is provided on the first arm and is provided along the length direction of the first arm, the first pin 201 is provided on the second arm, and the first driving pin extends into the first strip hole, and when the rotating rod 3 rotates, the second arm 242 is driven to rotate, thereby realizing the opening and closing of the clamping assembly.

[0046] Further, refer to Figure 8 , Fig. 9As a specific implementation, the driving structure of the rotating rod 3 is as follows: it includes a second movable seat 34 that is slidably arranged in the direction of approaching and moving away from the rotating rod 3, a guide member 35 that is perpendicular to the moving direction of the second movable seat 34, and a sliding member 332 that is slidably arranged on the guide member 35, a driving plate 33 is arranged on the sliding member 332, a driving inclined surface 330 is arranged on the driving plate 33, a connecting roller 340 that cooperates with the driving inclined surface 330 is arranged on the second movable seat 34, each clamping assembly is correspondingly provided with a driving plate 33, and multiple driving The plates 33 are connected by a connecting rod 331, and a second power telescopic rod 36 for driving the connecting rod 331 to move is provided on the body 10 of the vacuum chamber 1. Each clamping assembly includes two rotating rods 3, and a driving seat 32 is sleeved on the lower end of each rotating rod 3. Two driving arms are provided on the driving seat 32, and a driving roller 320 is provided on one driving arm. The other driving arm is connected by a tension spring 321. The second movable seat 34 is provided with an arc portion 341 adapted to the two driving rollers 320 on one side close to the driving roller 320. Figure 8 , Fig. 9 When the rotating rod 3 is driven to rotate under the tension of the tension spring 321, the first clamping jaw 245 and the second clamping jaw 246 are in a clamping state. At this time, the two driving rollers 320 are symmetrically arranged and correspond to the two arc-shaped portions 341. When the first clamping jaw 245 and the second clamping jaw 246 are opened when the rotating rod 3 needs to be driven to rotate, the second power telescopic rod 36 works to push the driving plate 33 to move. The driving inclined surface 330 on the driving plate 33 drives the connecting roller 340 to drive the second movable seat 34 to move in the direction close to the rotating rod 3. The two driving rollers 320 are driven by the two arc-shaped portions 341, thereby driving the rotating rod 3 to rotate around the axis, stretching the tension spring 321 to reach the open state. When closing, the second power telescopic rod 36 is reset, and under the tension of the tension spring 321, the first clamping jaw 245 and the second clamping jaw 246 are reset to the clamping state.

[0047] Specifically, the second power telescopic rod 36 can be any one of a pneumatic telescopic rod and an electric telescopic rod, and the second power telescopic rod 36 is connected to another control valve 37. The control valve 37 is switched to an open state when being squeezed by the second cam 63 surface, and the second power telescopic rod 36 works at this time. When the second cam 63 surface leaves the control valve 37, the second power telescopic rod 36 returns to the initial state.

[0048] Further, as a preferred embodiment, refer to Figure 1 , figure, at least one disk body 5 is coaxially provided with a central stop gear at the center, each vacuum chamber 1 is coaxially provided with a vacuum chamber 1 stop gear, an intermediate gear 511 is provided between each vacuum chamber 1 stop gear and the central stop gear, the vacuum chamber 1 stop gear is non-rotatingly matched with the vacuum chamber 1, and the central stop gear is rotationally matched with the disk body 5.

[0049] Furthermore, connecting shafts 14 are coaxially arranged at both ends of the bin body 10 , the connecting shaft 14 is rotationally connected to the disk body 5 , and the anti-rotation gear of the vacuum bin 1 is non-rotationally matched with the connecting shaft 14 . Specifically, the stopping gear of the vacuum chamber 1 is rotationally connected to the disk body 5, the connecting shaft 14 is non-rotationally matched with the stopping gear of the vacuum chamber 1, the connecting shaft 14 is detachably fixedly connected to the vacuum chamber 1, the intermediate gear 511 is rotatably arranged on the disk body 5 around the axis, and the center stopping gear is rotationally matched with the disk body 5. When working, the center stopping gear is detachably fixedly connected to the frame of the vacuum sealing machine and will not rotate around the axis. Through this arrangement, by controlling the transmission ratio of the intermediate gear 511, the center stopping gear and the stopping gear of the vacuum chamber 1, when the disk body 5 rotates, it can drive the stopping gear of the vacuum chamber 1 and the intermediate gear 511 to rotate around the axis of the disk body 5. Since the center stopping gear does not rotate, it can drive the intermediate gear 511 and the stopping gear of the vacuum chamber 1 to rotate around the axis, compensating for the rotation angle of the stopping gear of the vacuum chamber 1 around the axis of the disk body 5, thereby ensuring that the posture of the vacuum chamber 1 does not change.

[0050] Embodiment 2 The present application also provides a vacuum sealer, referring to Fig.14 The vacuum sealing machine includes any of the vacuum chamber 1 cover opening mechanisms described above, and also includes a driving gear, which is drivingly connected to the disk body 5 and is used to drive the two disk bodies 5 to rotate around their axes.

[0051] Specifically, the disk body 5 includes a first turntable 51 and a second turntable 52 that are spaced apart and coaxially arranged. The second turntable 52 is provided with an outer gear ring 520. The outer gear ring 520 is connected to the driving motor through a driving gear 521. The driving motor drives the driving gear to rotate and drives the first turntable and the second turntable to rotate synchronously, thereby achieving the purpose of driving the disk body 5. When the disk body rotates, the first cam surface provided on the disk body drives the cover of the vacuum chamber to switch the cover between the open and closed states of the chamber body.

[0052] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A vacuum chamber cover opening mechanism, characterized in that: include, A disc body (5), comprising two disc bodies (5) spaced apart from each other, wherein the disc bodies (5) are configured to be able to rotate synchronously around their axes; The vacuum chamber (1) is arranged in a circular array around the axis of the disc body (5), and comprises a chamber body (10) and a chamber cover (11) rotatably connected to the chamber body (10); A first cam surface (61), at least one of which is provided for each of the bin bodies (10) and is arranged in a circular array around the axis of the disk body (5); The bin cover (11) is provided with a connecting portion adapted to the first cam surface (61); when the disk body (5) rotates around its axis, the connecting portion of each vacuum bin (1) can pass through the first cam surface (61) in sequence, so as to switch the bin cover (11) between an open state and a closed state of the bin body (10).

2. A vacuum chamber cover opening mechanism according to claim 1, characterized in that: When the disk body (5) rotates one circle around the axis, the cover (11) of each vacuum chamber (1) switches once between an open state and a closed state.

3. A vacuum chamber cover opening mechanism according to claim 1 or 2, characterized in that: The first cam surface (61) comprises a guide section (610), a retaining section (611) and a closing section (612) arranged around the support shaft, wherein the retaining section (611) is located between the guide section (610) and the closing section (612); when the connecting portion cooperates with the closing section (612), the bin cover (11) is in a state of opening the bin body (10).

4. A vacuum chamber cover opening mechanism according to claim 3, characterized in that: The guide section (610) is located on a side of the retaining section (611) close to the central area of ​​the disk body (5).

5. A vacuum chamber cover opening mechanism according to claim 3, characterized in that: The disc body (5) is detachably fixed with a cam disc (6), the cam disc (6) is provided with a groove body, and the first cam surface (61) is a side surface of the groove body.

6. A vacuum chamber cover opening mechanism according to claim 3, characterized in that: Each of the vacuum chambers (1) is correspondingly provided with two first cam surfaces (61), and the two cam surfaces are respectively provided on the sides of the two disk bodies (5) that are close to each other.

7. A vacuum chamber cover opening mechanism according to claim 1, characterized in that: A control valve (37) is provided at both ends of each vacuum chamber (1), and a plurality of second cam surfaces (631) are provided on the two disk bodies (5) in one-to-one correspondence with the plurality of vacuum chambers (1); the control valve (37) is configured such that when the control valve (37) passes through the second cam surface (631), the second cam (63) faces and squeezes the control valve (37) so that the control valve (37) switches from a closed state to an open state.

8. The vacuum chamber cover opening mechanism according to claim 1, characterized in that: A central stop gear is coaxially arranged at the center of at least one disk body (5), and a vacuum chamber (1) stop gear is coaxially arranged at each vacuum chamber (1). An intermediate gear (511) is arranged between each vacuum chamber (1) stop gear and the central stop gear. The vacuum chamber (1) stop gear is non-rotatably matched with the vacuum chamber (1), and the central stop gear is rotationally matched with the disk body (5).

9. A vacuum chamber cover opening mechanism according to claim 8, characterized in that: Connecting shafts (14) are coaxially arranged at both ends of the bin body (10), the connecting shaft (14) is rotationally connected to the disk body (5), and the anti-rotation gear of the vacuum bin (1) is non-rotatably matched with the connecting shaft (14).

10. A vacuum sealing machine, characterized in that: It comprises the vacuum bin (1) cover opening mechanism as claimed in any one of claims 1 to 9, and also comprises a driving gear which is drivingly connected to the disc bodies (5) and is used to drive the two disc bodies (5) to rotate around their axes.

Images