A vacuum packaging machine

Abstract

The present application discloses a vacuum packaging machine, comprising a machine body, a feeding mechanism, a rotating mechanism, a plurality of vacuum packaging mechanisms, a discharging conveyor belt, and a transfer mechanism. The vacuum packaging mechanism comprises an exhaust cover, a lower plate, an opening and closing device, and a pair of bag clamping plates. The transfer mechanism comprises a slide rail 1, which is installed above the discharging conveyor belt through a frame; a sliding block, which can be laterally installed on the slide rail 1 through a straight-acting actuator; a suction cup, which is installed at the end of the sliding block and is used to grab the packaging bag. The discharging conveyor belt is perpendicular to the lower plate in the discharging position. By adopting the above technical scheme, in daily use, after completing the vacuuming and sealing of the packaging bag, the exhaust cover and the lower plate are opened, the sliding block 2 is close to the lower plate, the suction cup grabs the packaging bag, and then moves to the discharging conveyor belt. At this time, the long strip bottom of the packaging bag is perpendicular to the conveying direction of the discharging conveyor belt. When it falls onto the running discharging conveyor belt, it will inevitably fall backwards, so that the postures of the packaging bags are consistent, which is convenient for unloading.

Description

Technical Field

[0001] The invention relates to a vacuum packaging machine. Background Art

[0002] The vacuum packaging machine can automatically extract the air in the packaging bag and complete the sealing process after reaching a predetermined vacuum degree. It can also be filled with nitrogen or other mixed gases to complete the sealing process. Vacuum packaging machines are often used in the food industry because after vacuum packaging, the food can resist oxidation and achieve the purpose of long-term preservation.

[0003] Existing vacuum packaging machines are usually equipped with a frame, a feeding mechanism, a vacuum packaging mechanism and a feeding mechanism. For example, a Chinese invention patent with publication number CN114711380B discloses a two-in-one new bag-feeding vacuum packaging machine, including a chassis, a control panel, a prefabricated bag placement mechanism, a zongzi leaf tray mechanism, a zongzi leaf placement mechanism, a plurality of equally spaced material placement drums, a plurality of equally spaced material clamping mechanisms, a bag clamping rotation mechanism, a liquid injection mechanism, a rotating mechanism and a material discharging crawler. Among them, the vacuum sealing mechanism includes a vacuum box body, a vacuum box body, a support plate, a rotating base, a linear bearing, an air extraction port, a vacuum air pump, an air pipe connection, a sealing ejector rod, a sealing silicone strip, a bag clamping plate, a vacuum pressure gauge, a box cover, an opening and closing push rod and a sealing heating strip, so as to realize continuous feeding, bagging, vacuum packaging and feeding. However, it still has the following defects:

[0004] 1. The unloading crawler is tangent to the rotating track of the rotating mechanism. The packaged bags are flat and the bottom is usually long. When falling, the bottom of the bag is parallel to the movement direction of the unloading crawler. When it contacts the unloading crawler, it will turn to the left or right unpredictably. It is impossible to ensure that all the bags are in the same position on the unloading crawler, which affects the packing efficiency of the subsequent automatic case packing machine.

[0005] 2. There is no locking mechanism to ensure that the bag clamping plate is firmly clamped on the packaging belt. If the items in the packaging bag are heavy, they are easy to fall off. Summary of the invention

[0006] The present invention aims to solve one of the technical problems existing in the prior art.

[0007] The present application provides a vacuum packaging machine, including a machine body, a feeding mechanism, a rotating mechanism, a plurality of vacuum packaging mechanisms, and further comprising:

[0008] A discharging conveyor belt is installed on the machine body, with one end extending out of the machine body;

[0009] A transfer mechanism, used to transfer the packaged packaging bags to the outfeed conveyor belt;

[0010] Wherein, the lower part of the packaging bag moved to the discharge conveyor belt by the transfer mechanism is perpendicular to the moving direction of the discharge conveyor belt.

[0011] The vacuum packaging mechanism includes:

[0012] The exhaust cover is movably mounted on the top of the rotating mechanism through a pair of parallel arms;

[0013] A lower plate, which is flippably mounted in the middle of the rotating mechanism via a hinge;

[0014] An opening and closing device, which is used to drive the opening and closing of the air extraction cover and the lower plate;

[0015] A pair of bag clamping plates can be flipped and installed on the upper surface of the lower plate.

[0016] Transfer agencies include:

[0017] Slide rail 1, which is installed above the discharge conveyor belt through a frame;

[0018] A sliding block, which is laterally movable and mounted on the first slide rail via a linear actuator;

[0019] A suction cup mounted on the end of the sliding block for grabbing the packaging bag;

[0020] The slide rail and the discharging conveyor belt are parallel to each other, and the discharging conveyor belt is perpendicular to the lower plate at the discharging position.

[0021] The opening and closing device comprises:

[0022] A connecting rod, one end of which is hinged to one of the parallel arms;

[0023] A top rod, which is movably mounted on the rotating mechanism and has a top end hinged to the connecting rod;

[0024] A swing arm, one end of which is hinged to the bottom of the rotating mechanism, and the other end of which is hinged to the bottom end of the top rod;

[0025] A linkage device is used to make the ejector rod rise when it passes through the transfer mechanism and the feeding mechanism.

[0026] The linkage includes:

[0027] The guide frame is semicircular in shape, arranged between the rotating mechanism and the machine body, and arranged concentrically with the rotating mechanism;

[0028] A guide groove, which is arranged on the top of the outer side wall of the guide frame, and includes an ascending section, a retaining section and a descending section;

[0029] Guide blocks are respectively fixedly mounted on the inner side walls of each swing arm;

[0030] The guide block is away from the swing arm end and can be slidably matched with the guide groove, and the ascending section, the holding section and the descending section are arranged in sequence according to the optional installation direction of the rotating mechanism.

[0031] The vacuum packaging mechanism also includes:

[0032] A pair of rotating shafts, one end of which is fixedly connected to the corresponding bag clamping plates, and the other end of which is movably inserted through the lower plate and extends out of the bottom of the lower plate;

[0033] A connecting plate 1, the middle part of which is fixedly mounted on one of the rotating shafts;

[0034] The second connecting plate is triangular in shape, and one inner end thereof is fixedly mounted on another rotating shaft;

[0035] A linkage arm, one end of which is hinged to one end of the inner side of the second connecting plate, and the other end of which is hinged to the outer side of the second connecting plate;

[0036] A driving unit, used for driving the second connecting plate to rotate around a corresponding rotating shaft;

[0037] The locking unit is used for locking after the driving unit drives the connecting plate 2 to rotate.

[0038] Also includes:

[0039] A sleeve, which is fixedly mounted at the bottom end of the lower plate and sleeved on the outside of any rotating shaft;

[0040] A locking chamber, which is arranged at the lower end of the rotating shaft corresponding to the sleeve;

[0041] A pair of locking grooves are symmetrically arranged on the inner wall of the locking cavity;

[0042] A pair of through grooves are symmetrically arranged on the top of the inner wall of the locking cavity and correspond to each locking groove;

[0043] A pair of locking blocks are movably inserted in corresponding through slots and can be plugged and matched with corresponding locking slots;

[0044] Spring 1, which is arranged between adjacent ends of a pair of locking blocks;

[0045] The locking unit is used to make a pair of locking blocks disengage from the locking grooves when the lower plate moves to correspond to the transfer mechanism.

[0046] The locking unit comprises:

[0047] A lifting plate, which can be lifted and slidably installed in the locking cavity;

[0048] A cover ring, which is fixedly mounted on the lower end of the rotating shaft;

[0049] The support block has an upper end fixedly mounted on the bottom surface of the lifting plate and a spherical lower end extending through the ring cover and out of the locking cavity;

[0050] A pair of unlocking blocks, the bottom ends of which are fixedly mounted on the top surface of the lifting plate, and the top ends of which are inclined inwards;

[0051] A pair of unlocking grooves are respectively arranged on the bottom surface of each locking block and have the same shape as the upper end of the corresponding unlocking block;

[0052] The column is fixedly installed on the top surface of the machine body and is located between the rotating mechanism and the transfer mechanism.

[0053] The locking unit also includes:

[0054] A pair of reset arc grooves are symmetrically arranged on the upper side wall of the inner cavity of the sleeve;

[0055] A pair of reset sliders are symmetrically arranged on the outer wall of the rotating shaft and are respectively slidably matched with corresponding reset arc grooves;

[0056] A pair of return springs are respectively installed between each return arc groove and the corresponding return slide block;

[0057] Among them, the return springs are all compressed when the corresponding return slide blocks rotate clockwise.

[0058] The drive unit includes:

[0059] A second slide rail is fixedly mounted on the top of the machine body and arranged below the lower plate at the loading position;

[0060] A rack, which is slidably mounted on the second slide rail;

[0061] The rotating wheel is rotatably mounted on the top of the machine body, and a tooth group 1 for transmission with the rack is provided in the three-quarter area of ​​the circumference, and is driven by a driving motor 1;

[0062] The balance wheel is semicircular in shape, with two tooth groups for transmission with the rack on the arc side, and the straight side is rotatably mounted on the body through a pin;

[0063] A tension spring, the two ends of which are connected to the top surface of the balance wheel and the top of the body, and are used to apply a clockwise tension to the balance wheel;

[0064] One end of the shifting rod is fixedly mounted on the top of the pin shaft, and the top of the other end is equipped with a shifting block for shifting the two far ends of the connecting plate.

[0065] The beneficial effects of the present invention are as follows:

[0066] 1. Through the discharging conveyor belt, slide rail 1, sliding block and suction cup arranged vertically with the vacuum packaging mechanism at the discharging position, the packaged packaging bags fall in the same direction when they fall on the discharging conveyor belt, which is convenient for subsequent unloading;

[0067] 2. Through the arrangement of a pair of parallel arms, connecting rods, ejector rods, swing arms, guide frames, guide grooves and guide blocks, the vacuum cover and lower plate automatically open when approaching the discharge conveyor belt, and automatically close after passing through the discharge conveyor belt and the loading mechanism. No electrical control is required, and pure mechanical structure control is used, which reduces the control difficulty.

[0068] 3. Through the arrangement of a pair of rotating shafts, a connecting plate 1, a connecting plate 2, a linkage arm, a sleeve, a locking cavity, a pair of locking grooves, a pair of through grooves, a pair of locking blocks, a spring 1, a lifting plate, a cover ring, a support block, a pair of unlocking blocks, a pair of unlocking grooves, a column, a pair of reset arc grooves, a pair of reset sliders and a pair of reset springs, when a pair of bag clamping plates clamp the packaging bag, the position of the pair of bag clamping plates is fixed, and when the corresponding vacuum cover and the lower plate move to the corresponding position of the discharge conveyor belt, the pair of bag clamping plates are automatically opened, so that the pair of bag clamping plates maintain the clamping force on the packaging bag in the non-unloading step to prevent the packaging bag from falling;

[0069] 4. Through the coordinated arrangement of the slide rail 2, the rack, the drive motor 1, the rotating wheel, the tooth group 1, the balance wheel, the tooth group 2, the tension spring, the lever and the lever block, it is only necessary to control the start and stop of the drive motor 1 so that the lever can swing with the pin shaft as the origin and then reset. The swing stroke is fixed and there will be no damage to adjacent components due to excessive swing of the lever. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 A three-dimensional diagram of a vacuum packaging machine in an embodiment of the present application;

[0071] Figure 2 This is a schematic diagram of the structure of the body and its top in the embodiment of the present application;

[0072] Figure 3 for Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0073] Figure 4 This is a schematic diagram of the matching structure of the guide frame, the guide slot and the guide block in the embodiment of the present application;

[0074] Figure 5 This is a schematic diagram of the structure of the vacuum packaging mechanism in the embodiment of the present application;

[0075] Figure 6 This is a schematic diagram of the coordination structure between the driving unit and the second connecting plate in the embodiment of the present application;

[0076] Figure 7 This is a schematic diagram of the structure of the driving unit in the embodiment of the present application;

[0077] Figure 8 for Figure 6 Schematic diagram of the cross-section structure in the middle BB direction;

[0078] Fig. 9 for Figure 8 Schematic diagram of the cross-section structure in the CC direction.

[0079] Reference numerals

[0080] 1-body, 2-feeding mechanism, 3-rotating mechanism, 301-pillar, 302-turntable, 303-gear ring, 304-gear, 305-driving motor 2, 4-vacuum packaging mechanism, 401-vacuum cover, 402-parallel support arm, 403-lower plate, 404-hinge, 405-bag clamping plate, 406-locking chamber, 407-locking groove, 408-through groove, 409-locking block, 410-spring 1 , 411-barometer, 412-negative pressure tube, 413-heating strip, 414-rotating shaft, 415-connecting plate 1, 416-connecting plate 2, 417-linking arm, 418-sleeve, 5-discharging conveyor belt, 6-transfer mechanism, 601-slide rail 1, 602-frame, 603-slider, 604-straight actuator, 605-suction cup, 7-opening and closing device, 701-connecting rod, 702-top rod, 703 -swing arm, 8-linkage device, 801-guide frame, 802-guide groove, 802a-rising section, 802b-holding section, 802c-descending section, 803-guide block, 9-driving unit, 901-slide rail 2, 902-rack, 903-wheel, 904-tooth group 1, 905-balance wheel, 906-tooth group 2, 907-tension spring, 908-shift lever, 909-pin shaft, 910-shift block , 911-limit block, 10-locking unit, 1001-lifting plate, 1002-cover ring, 1003-unlocking block, 1004-unlocking groove, 1005-reset arc groove, 1006-reset slider, 1007-reset spring, 1008-anti-loosening groove, 1009-anti-slip column, 1010-spring two, 1011-through hole, 1012-unlocking column, 1013-support block, 1014-column. DETAILED DESCRIPTION

[0081] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0082] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0083] The server provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0084] Embodiment 1:

[0085] like Figure 1 and Figure 5 As shown, an embodiment of the present application provides a vacuum packaging machine, including a body 1, a loading mechanism 2, a rotating mechanism 3, a plurality of vacuum packaging mechanisms 4, and also includes a discharge conveyor belt 5, which is installed on the body 1 and one end of which extends out of the body 1; a transfer mechanism 6, which is used to transfer the packaged packaging bags to the discharge conveyor belt 5, and the lower part of the packaging bags moved to the discharge conveyor belt 5 by the transfer mechanism 6 is perpendicular to the moving direction of the discharge conveyor belt 5.

[0086] Furthermore, the vacuum packaging mechanism 4 includes an exhaust cover 401, which can be movably installed on the top of the rotating mechanism 3 through a pair of parallel arms 402; a lower plate 403, which can be flipped and installed in the middle of the rotating mechanism 3 through a hinge 404; an opening and closing device 7, which is used to drive the opening and closing of the exhaust cover 401 and the lower plate 403; and a pair of bag clamping plates 405, which can be flipped and installed on the upper surface of the lower plate 403.

[0087] Furthermore, the transfer mechanism 6 includes a slide rail 601, which is installed above the discharge conveyor belt 5 through a frame 602; a sliding block 603, which can be laterally installed on the slide rail 601 through a straight actuator 604; a suction cup 605, which is installed at the end of the sliding block 603 for grabbing the packaging bag, the slide rail and the discharge conveyor belt 5 are parallel to each other, and the discharge conveyor belt 5 is perpendicular to the lower plate 403 in the discharge position.

[0088] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the transfer mechanism 6 drives each vacuum packaging mechanism 4 to rotate counterclockwise, the discharge conveyor belt 5 and the loading mechanism 2 are arranged counterclockwise around the transfer mechanism 6, and the vacuum cover 401 and the lower plate 403 of the vacuum packaging mechanism 4 at the corresponding position of the discharge conveyor belt 5 are opened under the cooperation of the opening and closing device 7 and the parallel support arm 402, and the sliding block 603 approaches the lower plate 403 of the vacuum packaging mechanism 4 under the drive of the straight-moving actuator 604. At the same time that the suction cup 605 sucks the packaged bag, a pair of bag clamping plates 405 is opened, and the straight-moving actuator 604 is operated to move the sliding block 603 above the discharge conveyor belt 5. When the packaging bag moves to the top of the discharge conveyor belt 5, the suction cup 605 releases the grip on the packaging bag, and the packaging bag is free It falls to the top of the discharge conveyor belt 5, and at this time, the width direction of its bottom end is perpendicular to the conveying direction of the discharge conveyor belt 5. Therefore, when the packaging bag falls to the top of the discharge conveyor belt 5, the lower end first moves with the discharge conveyor belt 5 away from the machine body 1, and the upper end falls toward the machine body 1. At the same time, the rotating mechanism 3 is activated again to move the vacuum packaging mechanism 4 after the internal packaging bag is unloaded to the corresponding position with the feeding mechanism 2. The feeding mechanism 2 loads the unpackaged packaging bag into the vacuum packaging mechanism 4, and a pair of clamping plates clamp the packaging bag at the same time. After the loading of the packaging bag is completed, the transfer mechanism 6 continues to operate. With the cooperation of a pair of parallel supporting arms 402 and the opening and closing device 7, the vacuum cover 401 and the lower plate 403 of the vacuum packaging mechanism 4 are closed to vacuumize and seal the packaging bag inside.

[0089] The straight-moving actuator 604 is a straight-moving air cylinder or a hydraulic cylinder;

[0090] The rotating mechanism 3 includes a support 301, a rotating disk 302, a gear ring 303, a gear 304 and a second driving motor 305. The rotating disk 302 is fixedly mounted on the top of the support 301. The support 301 is rotatably mounted on the top of the body 1. The gear ring 303 is mounted on the outer wall of the support 301. The gear 304 is transmission-connected with the gear ring 303 and is fixedly connected to the output shaft of the second driving motor 305. The second driving motor 305 is fixedly mounted on the body 1.

[0091] A pressure gauge 411 and a negative pressure tube 412 are also provided on the air extraction cover 401 , and a sealing heating strip 413 is also provided on the top surface of the lower plate 403 .

[0092] Embodiment 2:

[0093] like Figures 2 to 5As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the opening and closing device 7 includes a connecting rod 701, one end of which is hinged to one of the parallel arms 402; a top rod 702, which is movably mounted on the rotating mechanism 3 and hinged to the connecting rod 701 at the top; a swing arm 703, one end of which is hinged to the bottom of the rotating mechanism 3, and the other end is hinged to the bottom of the top rod 702; a linkage device 8, used to make the top rod 702 rise when passing through the transfer mechanism 6 and the feeding mechanism 2.

[0094] Furthermore, the linkage device 8 includes a guide frame 801, which is semicircular and is arranged between the rotating mechanism 3 and the body 1, and is concentric with the rotating mechanism 3; a guide groove 802, which is arranged at the top of the outer wall of the guide frame 801, and includes an ascending section 802a, a retaining section 802b and a descending section 802c; a guide block 803, which is respectively fixedly mounted on the inner wall of each swing arm 703, and the guide block 803 can be slidably matched with the guide groove 802 away from the end of the swing arm 703, and the ascending section 802a, the retaining section 802b and the descending section 802c are arranged in sequence according to the optional direction of the rotating mechanism 3.

[0095] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the guide frame 801 is arranged between the rotating mechanism 3 and the discharge conveyor belt 5 and the loading mechanism 2. At the same time, the retaining section 802b of the guide groove 802 corresponds to the discharge conveyor belt 5 and the loading mechanism 2. When the vacuum packaging mechanism 4 moves toward the discharge conveyor belt 5, the corresponding guide block 803 enters the rising section 802a. As the vacuum packaging mechanism 4 continues to move, the corresponding guide block 803 slides from the rising section 802a to the retaining section 802b. Correspondingly, the swing arm 703 also swings around its hinge point with the rotating mechanism 3, and the other end pushes the top rod 702 to rise, so that the connecting rod 701 pushes a pair of parallel support arms 402 to lift up, so that the vacuum cover 401 and the lower plate 403 are separated, and the lower plate 403 that loses the pressure of the vacuum cover 401 swings around the corresponding hinge 404, and the outer end The inner end of the air extraction cover 401 rises, causing the upper surface of the lower plate 403 to tilt, and the rotating mechanism 3 continues to move, so that the air extraction cover 401 and the lower plate 403 complete the unloading and loading actions through the unloading conveyor belt 5 and the loading mechanism 2, and the guide block 803 slides from the holding section 802b to the descending section 802c. With the continuous operation of the rotating mechanism 3, the horizontal height of the holding section 802b on the descending section 802c continues to decrease, and accordingly, the swing arm 703 also swings around the hinge point between it and the rotating mechanism 3, and its other end, the top rod 702, the connecting rod 701, a pair of parallel support arms 402 and the air extraction cover 401 all descend under the action of gravity, and the inner end of the descending air extraction cover 401 contacts the inner end of the lower plate 403, driving the inner plate to swing around the hinge 404 until the air extraction cover 401 and the lower plate 403 are closed, and the guide block 803 is separated from the descending section 802c.

[0096] The turntable 302 is provided with a slot (not shown) for the lift rod 702 to be raised and lowered.

[0097] Embodiment 3:

[0098] exist Figure 5 , Figure 6 and Figure 8 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the vacuum packaging mechanism 4 also includes a pair of rotating shafts 414, one end of which is fixedly connected to the corresponding bag clamping plates 405, and the other end of which is movably inserted through the lower plate 403 and extends out of the bottom of the lower plate 403; a connecting plate 1 415, the middle of which is fixedly installed on one of the rotating shafts 414; a connecting plate 2 416, which is triangular in shape, and one inner end of which is fixedly installed on the other rotating shaft 414; a linkage arm 417, one end of which is hinged to the inner end of the connecting plate 2 416, and the other end is hinged to the outer end of the connecting plate 2 416; a driving unit 9, which is used to drive the connecting plate 2 416 to rotate around the corresponding rotating shaft 414; a locking unit 10, which is used to lock the connecting plate 2 416 after the driving unit 9 drives the connecting plate 2 416 to rotate.

[0099] Furthermore, it also includes a sleeve 418, which is fixedly installed at the bottom end of the lower plate 403 and sleeved on the outside of any rotating shaft 414; a locking cavity 406, which is arranged at the lower end of the rotating shaft 414 corresponding to the sleeve 418; a pair of locking grooves 407, which are symmetrically arranged on the inner wall of the locking cavity 406; a pair of through grooves 408, which are symmetrically arranged at the top of the inner wall of the locking cavity 406, corresponding to each locking groove 407; a pair of locking blocks 409, which can be movably inserted in the corresponding through grooves 408 and can be plugged into and matched with the corresponding locking grooves 407; a spring 410, which is arranged between the adjacent ends of a pair of locking blocks 409; a locking unit 10, which is used to disengage a pair of locking blocks 409 from the locking grooves 407 when the lower plate 403 moves to correspond to the transfer mechanism 6.

[0100] In this embodiment of the present application, due to the adoption of the above-mentioned structure, when the feeding mechanism 2 moves the packaging bag to the surface of the lower plate 403, the driving unit 9 drives the second connecting plate 416 to swing around the rotating shaft 414 installed on it. At this time, the linkage arm 417 acts at the same time, pulling the connecting plate to swing around the rotating shaft 414 installed on it. At this time, the rotation directions of the pair of rotating shafts 414 are opposite, so that the pair of bag clamping plates 405 swing toward the surface of the lower plate 403. In this process, one of the rotating shafts 414 rotates in the sleeve 418, and the packaging bag is clamped and fixed on the surface of the lower plate 403. At this time, the pair of locking blocks 409 move to the pair of locks. At the position corresponding to the stop groove 407, under the action of the spring 1 410, the outer ends of a pair of locking blocks 409 are inserted into the corresponding locking grooves 407, so that the sleeve 418 and the corresponding rotating shaft 414 are fixed. At the same time, because the rotating shaft 414 cannot rotate, another rotating shaft 414 connected to it through the connecting plate 1 415, the connecting plate 2 416 and the linkage arm 417 cannot swing either, so that before the packaging bag is packaged and moved to the position corresponding to the discharge conveyor belt 5, the pair of bag clamping plates 405 can maintain the clamping force to prevent the packaging bag from being displaced on the surface of the lower plate 403 or even falling off after loading.

[0101] When the vacuum cover 401 and the lower plate 403 are opened and moved to the position corresponding to the discharge conveyor belt 5, the locking unit 10 and the transfer mechanism 6 operate simultaneously. When the transfer mechanism 6 grabs the packaged bag, the locking unit 10 takes effect, causing the pair of locking blocks 409 to move away from the corresponding locking groove 407 until each locking block 409 is disengaged from the corresponding locking groove 407, so that each rotating shaft 414 can rotate, and the pair of bag clamping plates 405 release the clamping of the package bag. The transfer mechanism 6 then operates, and the package bag moves toward the discharge conveyor belt 5. At the same time, the package bag moves the pair of bag clamping plates 405 to rotate each rotating shaft 414. At this time, the pair of locking blocks 409 are misaligned with the corresponding locking groove 407, and then the transfer mechanism 6 transfers the packaged bag to the discharge conveyor belt 5.

[0102] Embodiment 4:

[0103] like Figure 6 , Figure 8 and Fig. 9As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the locking unit 10 includes a lifting plate 1001, which can be lifted and slidably installed in the locking cavity 406; a cover ring 1002, which is fixedly installed at the lower end of the rotating shaft 414; a support block 1013, whose upper end is fixedly installed on the bottom surface of the lifting plate 1001, and the lower end is spherical, extending through the ring cover to the outside of the locking cavity 406; a pair of unlocking blocks 1003, whose bottom ends are fixedly installed on the top surface of the lifting plate 1001, and whose top ends are inclined inwardly; a pair of unlocking grooves 1004, which are respectively arranged on the bottom surface of each locking block 409 and have the same shape as the upper end of the corresponding unlocking block 1003; a column 1014, which is fixedly installed on the top surface of the body 1, and is located between the rotating mechanism 3 and the transfer mechanism 6.

[0104] Furthermore, the locking unit 10 also includes a pair of anti-loosening grooves 1008, which are arranged at the top of the locking cavity 406 and correspond to each unlocking block 1003 respectively; a pair of anti-loosening columns 1009, which can be slidably installed in the corresponding anti-loosening grooves 1008; a pair of springs 1010, which are respectively arranged between the inner ends of each anti-loosening column 1009 and the inner ends of the corresponding anti-loosening grooves 1008; a pair of through holes 1011, which respectively pass through each locking block 409 up and down, and connect the corresponding anti-loosening grooves 1008 and the unlocking grooves 1004; a pair of unlocking columns 1012, which are slidably installed in the corresponding anti-loosening grooves 1008 and the through holes 1011.

[0105] Furthermore, the locking unit 10 also includes a pair of reset arc grooves 1005, which are symmetrically arranged on the upper side wall of the inner cavity of the sleeve 418; a pair of reset sliders 1006, which are symmetrically arranged on the outer wall of the rotating shaft 414, and respectively slide with the corresponding reset arc grooves 1005; a pair of reset springs 1007, which are respectively installed between each reset arc groove 1005 and the corresponding reset slider 1006, and the reset springs 1007 are squeezed when the corresponding reset slider 1006 rotates clockwise.

[0106] In this embodiment of the present application, due to the adoption of the above-mentioned structure, when the lower plate 403 moves to the position corresponding to the discharge conveyor belt 5, the lower end of the support block 1013 contacts the upper end of the column 1014 and is pushed by the column 1014 to move into the locking cavity 406, and the lifting plate 1001 and a pair of unlocking blocks 1003 rise in the locking cavity 406, and each unlocking block 1003 first pushes the corresponding unlocking column 1012 to rise until each anti-slip column 1009 is pushed into the corresponding anti-loosening groove 1008 by the corresponding unlocking column 1012. At this time, each spring 1010 is compressed and shortened, and the top surface of each unlocking column 1012 is flush with the upper end surface of the corresponding locking block 409, and the lower end is flush with the unlocking groove 1004. At this time, the top of the unlocking block 1003 is flush with the upper end surface of the corresponding locking block 409 When the locking block 409 is in a state of being moved away from the corresponding locking groove 407, the locking block 409 is disengaged from the corresponding locking groove 407. At this time, the second spring 1010 releases its elastic potential energy, so that the pair of reset sliders 1006 rotate in the corresponding reset arc groove 1005. Accordingly, the pair of rotating shafts 414 rotate in opposite directions at the same time under the action of the connecting plate 1 415, the connecting plate 2 416 and the linkage arm 417, so that the pair of bag clamping plates 405 are opened. At this time, the locking blocks 409 are misaligned with the corresponding locking groove 407.

[0107] When unloading is completed and the corresponding lower plate 403 moves toward the upper feeding mechanism 2, the support block 1013 is out of contact with the column 1014. Under the action of gravity, the lifting plate 1001, each unlocking block 1003 and each unlocking column 1012 all descend. At this time, the spring 1 410 releases elastic potential energy, so that the outer ends of a pair of locking blocks 409 abut against the inner wall of the sleeve 418. At this time, under the action of each spring 2 1010, the lower ends of a pair of anti-loosening columns also abut against the top surfaces of the corresponding locking blocks 409.

[0108] When loading is completed, the drive unit 9 operates to drive a pair of rotating shafts 414 to rotate. During this process, a pair of reset sliders 1006 rotate with the corresponding rotating shafts 414, so that each reset spring 1007 is compressed and stores elastic potential energy until a pair of bag clamping plates 405 fix the packaging bag on the upper surface of the lower plate 403. At this time, each locking block 409 corresponds to each locking groove 407. Under the action of spring one 410, the outer end of each locking groove 407 is inserted into the corresponding locking groove 407. Under the action of spring two 1010, the lower end of each relaxation column is also inserted into the corresponding through hole 1011 to complete the fixation of the pair of rotating shafts 414.

[0109] The cover ring 1002 is mounted by welding.

[0110] Embodiment 5:

[0111] like Figure 6 and Figure 7 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the driving unit 9 includes a second slide rail 901, which is fixedly mounted on the top of the body 1 and arranged below the lower plate 403 located at the loading position; a rack 902, which is slidably mounted on the second slide rail 901; a rotating wheel 903, which is rotatably mounted on the top of the body 1, and a tooth group 904 for transmission with the rack 902 is provided in an area of ​​three-quarters of the circumference, and is driven by a driving motor 1; a balance wheel 905, which is semicircular, and a tooth group 906 for transmission with the rack 902 is provided on the arc side, and the straight side is rotatably mounted on the body 1 through a pin 909; a tension spring 907, whose two ends connect the top surface of the balance wheel 905 and the top of the body 1, and is used to apply a clockwise pulling force to the balance wheel 905; a shifting rod 908, one end of which is fixedly mounted on the top of the pin 909, and the other end of which is provided with a shifting block 910 for shifting the far end of the connecting plate 2 416.

[0112] Furthermore, the driving unit 9 also includes a limit stopper 911 , which is fixedly mounted on the top of the body 1 and is used to cooperate with the straight side of the balance wheel 905 to limit the rotation angle of the balance wheel 905 .

[0113] In this embodiment of the present application, due to the adoption of the above-mentioned structure, when the lower plate 403 moves to the position corresponding to the feeding mechanism 2 and the feeding mechanism 2 moves the packaging bag to the surface of the upper plate, the driving motor 1 runs, the rotating wheel 903 rotates, and the tooth group 1 904 on its peripheral wall cooperates with the rack 902 to push the rack 902 in the direction of the balance wheel 905, and the tooth group 2 906 on the arc side of the balance wheel 905 cooperates with the rack 902, and the balance wheel 905, the pin 909 and the lever 908 rotate clockwise around the circumference of the pin 909, and the lever 908 swings toward the distal end of the connecting plate 2 416, pushing the distal end of the connecting plate 2 416, so that the connecting plate 2 416 drives the rotating shaft 414 installed thereon to rotate, and at the same time, the connecting plate 2 416 pulls the connecting plate 1 415 through the linkage arm 417, so that the rotating shaft 414 connected to the connecting plate 1 415 is also simultaneously The toothed plate 904 is then moved back to the left of the rotating plate 903, and the toothed plate 904 is moved back to the right ...

[0114] It should be noted that, in this article, the term "comprises", "includes" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or mechanism including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or mechanism. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or mechanism including the element. In addition, it should be pointed out that the scope of the methods and mechanisms in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0115] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A vacuum packaging machine, comprising a machine body, a feeding mechanism, a rotating mechanism, and a plurality of vacuum packaging mechanisms, characterized in that: Also includes: A discharging conveyor belt is installed on the machine body, with one end extending out of the machine body; A transfer mechanism, used to transfer the packaged packaging bags to the outfeed conveyor belt; Wherein, the lower part of the packaging bag moved to the discharge conveyor belt by the transfer mechanism is perpendicular to the moving direction of the discharge conveyor belt; The vacuum packaging mechanism comprises: The exhaust cover is movably mounted on the top of the rotating mechanism through a pair of parallel arms; A lower plate, which is flippably mounted in the middle of the rotating mechanism via a hinge; An opening and closing device, used for driving the air extraction cover and the lower plate to open and close; A pair of bag clamping plates, which can be flipped and mounted on the upper surface of the lower plate; The vacuum packaging mechanism also includes: A pair of rotating shafts, one end of which is fixedly connected to the corresponding bag clamping plates, and the other end of which is movably inserted through the lower plate and extends out of the bottom of the lower plate; A connecting plate 1, the middle portion of which is fixedly mounted on one of the rotating shafts; The second connecting plate is triangular in shape, and one inner end thereof is fixedly mounted on the other rotating shaft; A linkage arm, one end of which is hinged to one end of the inner side of the second connecting plate, and the other end of which is hinged to the outer side of the second connecting plate; A driving unit, used for driving the second connecting plate to rotate around a corresponding rotating shaft; A locking unit, used for locking after the driving unit drives the connecting plate 2 to rotate; Also includes: A sleeve, which is fixedly mounted on the bottom end of the lower plate and sleeved on the outside of any rotating shaft; A locking chamber, which is arranged at the lower end of the rotating shaft corresponding to the sleeve; A pair of locking grooves are symmetrically arranged on the inner wall of the locking cavity; A pair of through grooves, symmetrically arranged on the top of the inner wall of the locking cavity, corresponding to each of the locking grooves; A pair of locking blocks are movably inserted in corresponding through slots and can be plugged and matched with corresponding locking slots; Spring 1, which is arranged between adjacent ends of a pair of locking blocks; A locking unit, which is used to disengage a pair of locking blocks from the locking grooves when the lower plate moves to correspond to the transfer mechanism; The locking unit comprises: A lifting plate, which can be lifted and slidably installed in the locking cavity; A cover ring, which is fixedly mounted on the lower end of the rotating shaft; A support block, the upper end of which is fixedly mounted on the bottom surface of the lifting plate, and the lower end of which is spherical and extends out of the locking cavity through the ring cover; A pair of unlocking blocks, the bottom ends of which are fixedly mounted on the top surface of the lifting plate and the top ends of which are inclined inwards; A pair of unlocking grooves, respectively provided on the bottom surface of each locking block, and having the same shape as the upper end of the corresponding unlocking block; The column is fixedly mounted on the top surface of the machine body and is located between the rotating mechanism and the transfer mechanism.

2. A vacuum packaging machine according to claim 1, characterized in that: The transfer mechanism includes: A slide rail 1, which is installed above the discharge conveyor belt through a frame; A sliding block, which is laterally mounted on the first slide rail via a linear actuator; A suction cup mounted at the end of the sliding block for grabbing the packaging bag; Wherein, the slide rail 1 is parallel to the discharge conveyor belt, and the discharge conveyor belt is perpendicular to the lower plate at the discharge position.

3. A vacuum packaging machine according to claim 1 or 2, characterized in that: The opening and closing device comprises: A connecting rod, one end of which is hinged to one of the parallel arms; A top rod, which is movably mounted on the rotating mechanism and can be lifted, and the top end of which is hinged to the connecting rod; A swing arm, one end of which is hinged to the bottom of the rotating mechanism, and the other end of which is hinged to the bottom end of the top rod; The linkage device is used to make the ejector rod rise when passing through the transfer mechanism and the feeding mechanism.

4. A vacuum packaging machine according to claim 3, characterized in that: The linkage device comprises: A guide frame, which is semicircular, is arranged between the rotating mechanism and the machine body, and is arranged concentrically with the rotating mechanism; A guide groove, which is arranged on the top of the outer side wall of the guide frame, and includes an ascending section, a retaining section and a descending section; Guide blocks are respectively fixedly mounted on the inner side walls of the swing arms; The guide block is away from the swing arm end and can be slidably matched with the guide groove, and the ascending section, the retaining section and the descending section are arranged in sequence according to the optional installation direction of the rotating mechanism.

5. The vacuum packaging machine according to claim 1, characterized in that: The locking unit further comprises: A pair of reset arc grooves are symmetrically arranged on the upper side wall of the inner cavity of the sleeve; A pair of reset sliders are symmetrically arranged on the outer wall of the rotating shaft and are respectively slidably matched with corresponding reset arc grooves; A pair of reset springs, respectively installed between each reset arc groove and the corresponding reset slider; Wherein, the reset springs are all compressed when the corresponding reset slide blocks rotate clockwise.

6. A vacuum packaging machine according to claim 1 or 2, characterized in that: The driving unit comprises: A second slide rail, which is fixedly mounted on the top of the machine body and arranged below the lower plate at the loading position; A rack, which is slidably mounted on the second slide rail; A rotating wheel is rotatably mounted on the top of the machine body, and a tooth group 1 for transmission with a rack is provided in the three-quarter area of ​​the circumference thereof, and is driven by a driving motor 1; The balance wheel is semicircular in shape, with two tooth groups for transmission with the rack on the arc side, and the straight side is rotatably mounted on the body through a pin; A tension spring, two ends of which are connected to the top surface of the balance wheel and the top of the body, and are used to apply a clockwise tension to the balance wheel; One end of the shifting rod is fixedly mounted on the top of the pin shaft, and the top of the other end is equipped with a shifting block for shifting the two distal ends of the connecting plate.

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