CN214875875U - Automatic case packer for vacuum packaging bags - Google Patents

Abstract

The utility model discloses an automatic vacuum packaging bag boxing machine, which comprises a boxing machine frame, two parallel horizontal guide rails, a lifting column frame and a vacuum packaging bag grabbing mechanism, wherein the lower end of a grabbing arm of the vacuum packaging bag grabbing mechanism is provided with a vacuum sucker used for grabbing vacuum packaging bags, the two horizontal guide rails are fixed on the boxing machine frame at intervals, the vacuum packaging bag grabbing mechanism is fixed on the lifting column frame through a lifting mechanism, the lifting column frame is supported on the two horizontal guide rails through a bearing slider in a sliding way, the lifting column frame bears the gravity acting point for grabbing the vacuum packaging bags and falls on the contact surface of the bearing slider and the horizontal guide rails, a horizontal driving mechanism drives the lifting column frame to reciprocate along the horizontal guide rails, the utility model reduces the acting point to improve the moving stability of the packaging bag grabbing mechanism, thereby improving the moving speed.

Description

Automatic case packer for vacuum packaging bags

Technical Field

The utility model relates to an automatic case packer of vacuum packaging bag.

Background

The method for loading independent material packaging finished products into the carton for convenient carrying and stacking is a common method for packaging enterprises at present. Therefore, automatic case unpacking machines, automatic case filling machines and automatic packaging machines are produced on automatic production lines. The speed of the automatic box filling machine is core equipment in the whole link, and the box filling efficiency directly influences the yield of the whole production line.

The transmission mechanism of the box filling machine in the current market mostly adopts two structures of a rectangular coordinate system or a cylindrical coordinate system and a control method for filling and packaging. In particular, the rectangular coordinate system is adopted by a large number of box filler manufacturing enterprises because of its relatively simple control. But because the structure adopts the top-mounted power mode, the whole box entering mechanism is decorated at the lower end to form a longer cantilever structure. The disadvantage of this configuration is that the force point (i.e., the power-active point) is at the highest position of the overall device, while the center of gravity of the structure, which is enclosed by the moving object, is at the lowest end of the structure. This results in a long cantilever, which is subject to wobbling and hence instability at high speeds. In order to ensure the working stability of the equipment, a speed reduction mode is mostly adopted, and therefore, the boxing efficiency of the boxing machine with the structure is low. In addition, the packaging grabbing mechanism is a core component of the box filling machine, and the stability and the automation degree of the packaging grabbing mechanism determine the advanced degree of the box filling machine. The boxing machines provided in the current market have the defects of single boxing specification, namely the boxing machines cannot adapt to material bags with different specifications, and the parts need to be disassembled, assembled and replaced when the specification and variety are replaced, so that the problems of low production efficiency and poor applicability are caused.

Disclosure of Invention

An object of the utility model is to provide an automatic case packer of vacuum packaging bag, through reducing the stress point in order to improve the stability that the wrapping bag snatchs the mechanism and remove, and then improved the translation rate, smash the board and suppress the wrapping bag of interval adjustment mechanism in order to adapt to different specifications between board and the vacuum chuck through setting up wrapping bag handle suppression.

In order to realize the purpose, the technical scheme of the utility model is that:

an automatic vacuum packaging bag boxing machine comprises a boxing machine frame, two horizontal guide rails arranged in parallel, a lifting column frame and a vacuum packaging bag grabbing mechanism, wherein a vacuum sucker is arranged at the lower end of a grabbing arm of the vacuum packaging bag grabbing mechanism and used for grabbing vacuum packaging bags, the two horizontal guide rails are fixed on the boxing machine frame at intervals, the vacuum packaging bag grabbing mechanism is fixed on the lifting column frame through a lifting mechanism, the lifting column frame is supported on the two horizontal guide rails in a sliding mode through a bearing sliding block, the lifting column frame bears the gravity acting point of grabbing vacuum packaging bags and falls onto the contact surface of the bearing sliding block and the horizontal guide rails, a horizontal driving mechanism drives the lifting column frame to move back and forth along the horizontal guide rails, the horizontal guide rails are arranged at the position that the contact surface of the bearing sliding block and the horizontal guide rails is not higher than the middle point of the length of the grabbing arms after the lifting mechanism lifts the vacuum packaging bag grabbing mechanism in place, the horizontal guide rail is provided with inward concave notches in the middles of two longitudinal sides, the bearing sliding block is fixed with the lifting column frame, the lower end face of the bearing sliding block is provided with an upward groove, two sides of the notch of the groove are inwards retracted, after the groove of the bearing sliding block is buckled into the horizontal guide rail, two sides of the notch of the groove of the bearing sliding block are inwards retracted to be matched and meshed with the inward concave notches in the middles of two sides of the horizontal guide rail, and the bearing sliding block can be clamped on the guide rail through matching and meshing.

The scheme is further as follows: the horizontal driving mechanism for driving the lifting column frame comprises a horizontal rotating belt driven by a motor and arranged beside two horizontal guide rails, the lifting column frame is connected with the horizontal rotating belt through a transmission connecting block, and then the horizontal rotating belt drives the lifting column frame to move back and forth along the horizontal guide rails, and the front and the back of the horizontal guide rails are respectively provided with a limit sensor.

The scheme is further as follows: the vacuum packaging bag snatchs the arm that snatchs the mechanism has a plurality ofly, and a plurality of arms that snatch are one row of interval setting on a stores pylon, the stores pylon pass through the backup plate with elevating system connects, elevating system includes two parallel arrangement's vertical lift guide rail on the column frame that goes up and down, and the backup plate embraces the vertical lift guide rail through the lift slider that sets up, is equipped with the vertical lift belt that is driven by servo motor on two vertical lift guide rails sides, and the vertical lift belt passes through splint and backup plate fixed connection, and then drives stores pylon and a plurality of arms that snatch and go up and down along the vertical lift guide rail synchronization by the vertical lift belt.

The scheme is further as follows: snatch the arm lower extreme and be provided with the vacuum chuck fixed plate, the interval is provided with two at least exhaust pipe covers on the vacuum chuck fixed plate, and the trachea of breathing in that wears the trachea cover stretches out from the trachea cover lower extreme, and the trachea front end that stretches out sets up vacuum chuck is being snatched arm lower extreme vacuum chuck fixed plate side and is being provided with the tamping plate, and the tamping plate is used for suppressing the wrapping bag handle limit by a tamping plate cylinder control and bends in order to reduce the space that occupies of wrapping bag in the box, the tamping plate is fixed and is reciprocated by flexible arm drive on the flexible arm of tamping plate cylinder, the tamping plate cylinder is connected and is fixed on a horizontal telescopic machanism, and horizontal telescopic machanism drives the regulation the interval of tamping plate and vacuum chuck fixed plate is in order to adapt to different specification wrapping bags.

The scheme is further as follows: the horizontal telescopic mechanism comprises a guide rail horizontally arranged on the lower end side of the grabbing arm, a sliding block is arranged on the guide rail, the sliding block is fixedly connected with a tamping plate cylinder through a connecting plate, a driving device drives the sliding block to horizontally slide back and forth along the guide rail through the connecting plate, and then the distance between the tamping plate and the vacuum sucker fixing plate is driven to be adjusted.

The scheme is further as follows: the driving device comprises a screw rod driven by a servo motor, a nut is screwed on the screw rod and fixedly connected with the connecting plate, the servo motor drives the screw rod to rotate, the connecting plate is driven by the nut to move back and forth along the screw rod, and then the sliding block is driven to horizontally slide back and forth along the guide rail.

The scheme is further as follows: the servo motor drives the screw rod to rotate through a counting wheel, a photoelectric sensor is arranged on a grabbing arm and used for sensing a photosite arranged on the counting wheel, limit sensors are arranged on two end sides of the screw rod, the limit sensor on one end side serves as an initial position sensor and is used for determining the initial position of the tamping plate, and the grabbing mechanism controller determines the distance between the tamping plate and the vacuum sucker fixing plate through the initial position sensor, the photoelectric sensor, the counting wheel and the screw thread pitch.

The scheme is further as follows: the vacuum sucker is sleeved on the outlet of the air pipe, and the air pipe between the vacuum sucker and the bottom end of the air pipe sleeve is sleeved with a buffer spring.

The scheme is further as follows: the grabbing arm is rotatably arranged on the hanging rack through a bearing, and a rotation driving device drives the grabbing arm to rotate in a reciprocating mode at an angle of 0-180 degrees.

The scheme is further as follows: the rotation driving device comprises a driven steering gear sleeved on the upper end side of the grabbing arm and a sliding block fixedly arranged on the hanging frame, a long sliding rail is sleeved with the sliding block, a rack is arranged on the long sliding rail, the driven steering gear is meshed with the rack, a motor drives the rack to slide on the sliding block in a reciprocating mode through the meshing of a driving steering gear on a motor and the rack, and the rack which slides in the reciprocating mode drives the grabbing arm to rotate in a reciprocating mode at an angle of 0-180 degrees through the driven steering gear.

The utility model has the advantages that: compact structure snatchs the stability that the mechanism removed in order to improve the wrapping bag through reducing the stress point, and then has improved the translation rate more than one time, smashes the wrapping bag of board and interval adjustment mechanism between board and the vacuum chuck in order to adapt to different specifications through setting up wrapping bag handle suppression to through setting up the arrangement vanning that 180 degrees steering mechanism can be automatic.

Drawings

FIG. 1 is a schematic view of the front side of the structure of the present invention;

fig. 2 is a schematic side view of the structure of the present invention, and the left-hand schematic view of fig. 1;

FIG. 3 is a schematic diagram of a bag-shaped state of a material grabbed by the grabbing arm;

FIG. 4 is a schematic illustration of the bag of material after it has been bagged;

FIG. 5 is a side schematic view of the flat drive mechanism and lift mechanism configuration;

FIG. 6 is a schematic front view of the horizontal drive mechanism and lift mechanism configuration, viewed from A-A of FIG. 5;

FIG. 7 is a schematic cross-sectional view of the horizontal rail and the load-bearing slider, and an enlarged view of section A of FIG. 6;

FIG. 8 is a schematic view of a grabber arm configuration;

FIG. 9 is a schematic cross-sectional view of the horizontal telescoping mechanism of the tamper;

FIG. 10 is a schematic view of an assembled arrangement of a plurality of gripper arms;

fig. 11 is a schematic side view of the structure of the present invention, and a left side view of fig. 8;

fig. 12 is a schematic view of the 180-degree steering driving structure of the grabbing arm of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples. The described embodiments are only some embodiments of the invention, not all embodiments. In the description of the present embodiment, it should be noted that the terms "connected" and "disposed" should be interpreted broadly, for example, the "connection" may be a wire connection or a mechanical connection; the 'placing' can be fixedly connected placing or integrally formed placing. The specific meanings of the above terms in the present embodiment can be understood by those of ordinary skill in the art according to specific situations. It should be noted that various aspects will be described, each of which can be used alone or in combination. That is, any given aspect may be used in different embodiments unless explicitly indicated as a mere substitution. Furthermore, in the following, for the sake of simplicity, always an item is generally mentioned. However, unless explicitly mentioned, the present embodiment may also include many specific items. Thus, use of the terms "a" and "an" should be taken to mean that at least one item is used in a single embodiment.

An automatic vacuum packaging bag boxing machine is shown in figures 1 and 2 and comprises a boxing machine frame 30, two horizontal guide rails 31 arranged in parallel, a lifting column frame and a vacuum packaging bag grabbing mechanism, wherein a vacuum sucker 6 is arranged at the lower end of a grabbing arm 1 of the vacuum packaging bag grabbing mechanism, the vacuum sucker 6 is used for grabbing a vacuum packaging bag 7, a vacuum packaging bag conveying belt 32 conveys the vacuumized vacuum packaging bag to the lower end of the grabbing arm 1, a packaging bag conveying belt 33 penetrates through the machine frame 30 beside the vacuum packaging bag conveying belt 32, a packaging bag 8 conveyed by the packaging bag conveying belt 33 stays at the lower end of the grabbing arm 1 to wait for the grabbing arm 1 to load the grabbed vacuum packaging bag 7, and is delivered to the next process after being filled, wherein the vacuum packaging bag 7 is provided with a packaging bag handle 701, and the boxing quality is affected if the packaging bag handle 701 is not processed in the boxing process, for this reason, as shown in fig. 3 and 4, in the packing process, the handle edges of the packing bags need to be bent to reduce the occupied space of the packing bags in the box body, the packing is standardized, and the two packing bags in the box body are also turned 180 degrees so that the center of gravity of the packing box is uniform.

In order to realize the above-mentioned functional actions, as shown in fig. 1 and fig. 5, fig. 6 and fig. 7, the two horizontal guide rails 31 are fixed on the frame 30 of the box filling machine at intervals, the vacuum packaging bag grabbing mechanism is fixed on the lifting column frame 34 through a lifting mechanism, the lifting column frame 34 is slidably supported on the two horizontal guide rails 31 through the bearing slider 35, the lifting column frame bears the gravity force point for grabbing the vacuum packaging bag and falls on the contact surface of the bearing slider and the horizontal guide rails, and a horizontal driving mechanism 36 drives the lifting column frame to reciprocate along the horizontal guide rails 31, wherein: in order to improve the moving speed of the lifting column frame after the packaging bags are grabbed, the horizontal guide rail is arranged at the position where the lifting mechanism lifts the vacuum packaging bag grabbing mechanism to a position, the contact surface D of the bearing sliding block and the horizontal guide rail is not higher than the middle point C of the arm length of the grabbing arm 1, namely the plane level of the upper end of the horizontal guide rail is positioned in the lower arm interval of the grabbing arm close to the vacuum chuck. This structure can improve the wrapping bag and snatch the stability that the mechanism removed with the stress point reduction, and then has improved the translation rate. Besides reducing the stress point, the structure has the following characteristics, as shown in fig. 7, the horizontal guide rail is provided with inward concave notches 3101 along the middle of the two longitudinal sides, the bearing slide block 35 is fixed with the lifting column frame 34, the lower end face of the bearing slide block 35 is provided with an upward groove 3501, the two sides of each notch of the groove are inwards retracted 3502, after the groove of the bearing slide block 35 is buckled into the horizontal guide rail 31, the two sides of each notch of the groove of the bearing slide block are inwards retracted to be matched and meshed with the inward concave notches in the middle of the two sides of the horizontal guide rail, the bearing slide block can grasp the guide rail through matching and meshing, and the lifting column frame supported by the bearing slide block can be born and restrained from shaking caused by stress due to movement when the bearing slide block slides along the horizontal guide rail.

Wherein: the horizontal driving mechanism 36 for driving the lifting column frame 34 comprises a driving gear 3601 driven by a motor, the driving gear drives a horizontal rotating belt 3602 arranged beside the two horizontal guide rails through a chain and a driven wheel, the lifting column frame 34 is connected with the horizontal rotating belt through a transmission connecting block 3603, the horizontal rotating belt drives the lifting column frame to reciprocate along the horizontal guide rails, and the front and the rear of the horizontal guide rails are respectively provided with a limit sensor 37.

Wherein: as shown in fig. 1 and 10, the vacuum packaging bag snatchs the arm of mechanism and has a plurality ofly, and this embodiment is 4, and 4 snatch the arm and be one row of interval setting on a stores pylon 2, as shown in fig. 5 and 6, stores pylon 2 pass through backup plate 38 with elevating system connects, elevating system includes two vertical lift guide 39 of parallel arrangement on the lift post frame, and vertical lift guide 39 is embraced through the lift slider 40 that sets up to backup plate 38, is equipped with the vertical lift belt 42 that is driven by servo motor 41 by two vertical lift guide, and vertical lift belt passes through splint 43 and backup plate 38 fixed connection, and then drives the stores pylon and a plurality of arm of snatching and go up and down along vertical lift guide synchronous by vertical lift belt.

The vacuum packaging bag grabbing mechanism comprises a grabbing arm 1 as shown in figures 8 and 11, the upper end of the grabbing arm is connected to a hanger 2, the hanger 2 is used for being connected with a boxing device, at least two exhaust pipe sleeves 4 are arranged on a vacuum sucker fixing plate 3 at the lower end of the grabbing arm at intervals, each row has at least three air pipe sleeves, an air suction pipe 5 penetrating into the air pipe sleeves 4 is fixed with the air pipe sleeves 4 and extends out from the lower end of the air pipe sleeves 4, a vacuum sucker 6 is arranged at the front end of the extending air pipe, as shown in figures 6 and 7, two rows of vacuum suckers suck packaging bags from the middle of the plane of the packaging bags 7 and pack the packaging bags into a boxing 8, the packaging bags are vacuum packaging bags, a packaging bag handle 701 is arranged on one side of each packaging bag, during the boxing process, the packaging bag handle 701 is not processed, therefore, as shown in figures 1, 4 and 6, a tamping plate 9 is arranged on the side edge of the vacuum sucker fixing plate at the lower end of the grabbing arm, the board is used for suppressing the wrapping bag handle limit by a board cylinder control and bends in order to reduce the space that occupies of wrapping bag in the box, and standard vanning, it reciprocates to be fixed by flexible arm drive on the flexible arm 1001 of board cylinder to smash board 9, smash the connection of board cylinder and fix on a horizontal telescopic machanism, horizontal telescopic machanism drives and adjusts the interval of board and vacuum chuck fixed plate is in order to adapt to different specification wrapping bags.

As shown in fig. 8, 9 and 11, the horizontal telescopic mechanism includes a guide rail 11 horizontally arranged at the lower end of the grabbing arm, a slider 12 is arranged on the guide rail 11, the slider is fixedly connected with a tamping plate cylinder through a connecting plate 13, a driving device drives the slider to horizontally slide along the guide rail through the connecting plate 13, and further drives and adjusts the distance between the tamping plate and the vacuum chuck fixing plate, fig. 2 shows that there are two sets of the guide rail 11, the slider 12 and the connecting plate 13, and the two sets of the guide rail 11, the slider 12 and the connecting plate 13 are oppositely arranged.

The driving device for moving the connecting plate 13 is various, for example, the telescopic arm of the air cylinder drives the connecting plate 13 to move. One preferable scheme of this embodiment is: the driving device comprises a screw rod 15 driven by a servo motor 14 arranged on the grabbing arm, a nut 16 is screwed on the screw rod 15, the nut 16 is fixedly connected with the connecting plate 13, the servo motor drives the screw rod to rotate, the connecting plate is driven by the nut to move back and forth along the screw rod, and then the sliding block is driven to horizontally slide back and forth along the guide rail. Wherein: the screw 15 is arranged to pass through between the two exhaust pipe sleeves.

In order to accurately adjust the distance between the tamping plate and the vacuum chuck fixing plate: the servo motor drives the screw rod 15 to rotate through a counting wheel 17, the counting wheel 17 is shown as a driving wheel to drive a driven wheel 18 to rotate in the graph 1, the diameter of the driving wheel is the same as that of the driven wheel, the driving wheel drives the driven wheel to rotate through a toothed belt, a photoelectric sensor or a magnetic induction sensor 19 is arranged on a grabbing arm to sense a photosensitive point or a magnetic induction point arranged on the counting wheel, limit sensors a and b are arranged on two ends of the screw rod, the limit sensor on one end side is used as an initial position sensor for determining the initial position of the tamping plate, and a grabbing mechanism controller calculates and determines the distance between the tamping plate and a vacuum sucker fixing plate through the initial position sensor, the photoelectric sensor, the counting wheel and the tooth pitch of the screw rod.

As shown in fig. 8 and 11: the vacuum chuck is sleeved on the outlet of the air pipe, the air pipe between the vacuum chuck and the bottom end of the air pipe sleeve is sleeved with a buffer spring 20, and the buffer spring is installed between the vacuum chuck and the lower plane of the guide sleeve for fixing the hollow guide rod, so that the vacuum chuck is always in the lowest end of the grabbing arm in the initial state. When the grabbing arm moves downwards to take the material package, the buffer spring plays a role in buffering, so that the hard contact between the vacuum chuck and the packaging bag is prevented, and the damage of the vacuum chuck to the material package is reduced.

In order to be able to have a plurality of stations for boxing at the same time, therefore: as shown in fig. 10, 4 grabbing arms 1 are arranged on the hanging rack 2 at intervals, as shown in fig. 8, the grabbing arms 1 are rotatably arranged on the hanging rack 2 through a bearing seat 21 and a bearing 22 on the bearing seat, and as can be seen from fig. 4, in order to enable balanced boxing to make the handles 701 of upper and lower packaging bags not on one side, a rotation driving device drives the grabbing arms 1 to make reciprocating rotation at an angle of 0 to 180 degrees, thereby realizing balanced boxing.

The rotation driving device can have various structural modes, for example, each grabbing arm 1 is equipped with a motor drive, or adopts a link mechanism drive, in this embodiment, in order to be able to control the grabbing arms 1 of a plurality of stations to rotate synchronously in a centralized manner: as shown in fig. 8, 10 and 12, the rotation driving device includes a driven steering gear 23 sleeved on a rotating shaft 101 at the upper end of the grabbing arm and a sliding block 24 fixedly arranged on the hanging rack, a long sliding rail 25 is supported by the sliding block 24, the sliding block does not slide along the long sliding rail, a rack 26 is arranged on the sliding rail, the driven steering gear 23 is meshed with the rack 26, a motor 27 is meshed with the rack 26 through a driving steering gear 28 arranged on the rotating shaft of the motor and drives the rack 26 to slide on the sliding block 24 in a reciprocating manner, and the rack 26 sliding in the reciprocating manner drives the grabbing arm 1 to rotate in a reciprocating manner at an angle of 0 to 180 degrees through the driven steering gear. 4 grabbing arms 1 are arranged on the hanging rack at intervals, the long slide rail is divided into two sections, the two sections of long slide rails are arranged in a relatively staggered mode, a driving steering gear 28 is arranged between the two sections of long slide rails 25 which are staggered relatively, racks of the two sections of long slide rails respectively drive the 2 grabbing arms to do reciprocating rotation at an angle of 0-180 degrees, and the sliding blocks 24 and the racks 26 are arranged in a segmented mode.

Above-mentioned embodiment automatic case packer of vacuum packaging bag is through reducing the stress point in order to improve the stability that the wrapping bag snatchs the mechanism and remove, and then has improved the translation rate more than one time, suppresses the wrapping bag in order to adapt to different specifications through setting up the wrapping bag handle and suppressing interval adjustment mechanism between stamp and the vacuum chuck to through setting up the arrangement vanning that 180 degrees steering mechanism can be automatic.

Claims (10)

1. An automatic vacuum packaging bag boxing machine comprises a boxing machine frame, two horizontal guide rails arranged in parallel, a lifting column frame and a vacuum packaging bag grabbing mechanism, wherein a vacuum sucker is arranged at the lower end of a grabbing arm of the vacuum packaging bag grabbing mechanism and used for grabbing vacuum packaging bags, the two horizontal guide rails are fixed on the boxing machine frame at intervals, the vacuum packaging bag grabbing mechanism is fixed on the lifting column frame through a lifting mechanism, the lifting column frame is supported on the two horizontal guide rails in a sliding mode through a bearing sliding block, the lifting column frame falls on a contact surface of the bearing sliding block and the horizontal guide rails when bearing the gravity acting force for grabbing the vacuum packaging bags, a horizontal driving mechanism drives the lifting column frame to move back and forth along the horizontal guide rails, and the automatic vacuum packaging bag boxing machine is characterized in that the horizontal guide rails are arranged at installation positions after the lifting mechanism lifts the vacuum packaging bag grabbing mechanism in place, the contact surface of the bearing slide block and the horizontal guide rail is not higher than the middle point of the grabbing arm length, the horizontal guide rail is provided with inward concave notches in the middle of the two longitudinal sides, the bearing slide block is fixed with the lifting column frame, the lower end face of the bearing slide block is provided with an upward groove, the two sides of the notch of the groove are inwards retracted, after the bearing slide block groove is buckled into the horizontal guide rail, the two sides of the notch of the bearing slide block groove are inwards retracted to be matched and meshed with the inward concave notches in the middle of the two sides of the horizontal guide rail, and the bearing slide block is enabled to grab the guide rail through matching and meshing.

2. An automatic container loader as claimed in claim 1, wherein said horizontal driving mechanism for driving the lifting column frame comprises a horizontal rotating belt driven by a motor disposed beside two horizontal guide rails, said lifting column frame is connected to the horizontal rotating belt through a transmission connecting block, and further the lifting column frame is driven by the horizontal rotating belt to reciprocate along the horizontal guide rails, and limit sensors are disposed respectively in front and rear of the horizontal guide rails.

3. An automatic box filling machine as claimed in claim 1, wherein there are a plurality of gripping arms of the vacuum packing bag gripping mechanism, the gripping arms are arranged on a rack at intervals in a row, the rack is connected with the lifting mechanism through a backup plate, the lifting mechanism comprises two vertical lifting guide rails arranged in parallel on a lifting column frame, the backup plate embraces the vertical lifting guide rails through the arranged lifting sliders, a vertical lifting belt driven by a servo motor is arranged beside the two vertical lifting guide rails, the vertical lifting belt is fixedly connected with the backup plate through a clamping plate, and the rack and the gripping arms are driven by the vertical lifting belt to synchronously lift along the vertical lifting guide rails.

4. An automatic box filling machine as claimed in claim 1 or 3, wherein a vacuum chuck fixing plate is arranged at the lower end of the grabbing arm, at least two exhaust pipe sleeves are arranged on the vacuum chuck fixing plate at intervals, an air suction pipe penetrating into the air pipe sleeves extends out from the lower end of the air pipe sleeves, the vacuum chuck is arranged at the front end of the extending air pipe, a tamping plate is arranged at the side edge of the vacuum chuck fixing plate at the lower end of the grabbing arm and is controlled by a tamping plate cylinder to press the handle edge of the packaging bag to be bent so as to reduce the occupied space of the packaging bag in the box body, the tamping plate is fixed on a tamping plate cylinder telescopic arm and is driven by a telescopic arm to move up and down, the tamping plate cylinder is connected and fixed on a horizontal telescopic mechanism, and the horizontal telescopic mechanism is driven to adjust the distance between the tamping plate and the vacuum chuck fixing plate to adapt to packaging bags with different specifications.

5. An automatic box filling machine as claimed in claim 4, wherein the horizontal telescopic mechanism comprises a guide rail horizontally arranged at the lower end side of the grabbing arm, a slide block is arranged on the guide rail and is connected and fixed with the tamping cylinder through a connecting plate, and a driving device drives the slide block to horizontally slide back and forth along the guide rail through the connecting plate so as to drive and adjust the distance between the tamping plate and the vacuum chuck fixing plate.

6. An automatic box filling machine as claimed in claim 5, wherein the driving device comprises a screw driven by a servo motor, a nut is screwed on the screw, the nut is fixedly connected with the connecting plate, the servo motor drives the screw to rotate, and the nut drives the connecting plate to move back and forth along the screw, so as to drive the sliding block to horizontally slide back and forth along the guide rail.

7. An automatic container loader according to claim 6, characterized in that said servo motor is rotated by a counter wheel drive screw, a photoelectric sensor is provided on a pick arm to sense a light sensing point provided on the counter wheel, limit sensors are provided on both ends of the screw, one end side of the limit sensor serves as an initial position sensor for determining an initial position of the stamp, and a pick mechanism controller determines a distance between the stamp and the vacuum chuck fixing plate by the initial position sensor, the photoelectric sensor and the counter wheel and a screw pitch.

8. An automatic box filling machine as claimed in claim 4, wherein the vacuum suction cups are sleeved on the air pipe outlets, and buffer springs are sleeved on the air pipes between the vacuum suction cups and the bottom ends of the air pipe sleeves.

9. An automatic box filling machine as claimed in claim 4, wherein said grabber arms are rotatably mounted to the hanger by bearings, and a rotary drive means reciprocates the grabber arms at an angle of 0 to 180 degrees.

10. An automatic box filling machine as claimed in claim 9, wherein the rotary driving device comprises a driven steering gear sleeved on the upper end side of the grabbing arm and a sliding block fixedly arranged on the hanging frame, a long sliding rail is sleeved with the sliding block, a rack is arranged on the long sliding rail, the driven steering gear is meshed with the rack, a motor drives the rack to slide on the sliding block in a reciprocating mode through the driving steering gear on the motor and the rack, and the rack capable of sliding in a reciprocating mode drives the grabbing arm to rotate in a reciprocating mode through the driven steering gear at an angle of 0-180 degrees.

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