CN220663118U - Bag feeding and opening mechanism of agricultural product packaging machine - Google Patents

Abstract

The utility model relates to a bag feeding and opening mechanism of an agricultural product packaging machine, which comprises a frame, wherein a feeding table is fixed on the right side of the frame, a positioning structure is arranged on the feeding table, a transferring table is fixed in the frame, a limiting structure is arranged on the transferring table, and a feeding structure, a transferring structure, a bag feeding structure and a bag opening structure are arranged on the frame; the positioning structure comprises a connecting plate capable of moving left and right, a fixed rack is arranged in the connecting plate in a sliding manner, a locking piece is further arranged on the connecting plate, a moving plate is fixed on the right side of the fixed rack, and a positioning plate is fixed on the right side of the moving plate; the limiting structure comprises two limiting plates which can move relatively or move oppositely. The locating plate can move left and right on the feeding table, the position of the locating plate can be adjusted according to the size of the bag material, the fixed rack slides left and right in the connecting plate, the distance between the connecting plate and the locating plate can be changed through locking by the locking piece, and the moving range of the locating plate is larger.

Description

Bag feeding and opening mechanism of agricultural product packaging machine

Technical Field

The utility model relates to the technical field of agricultural product packaging, in particular to a bag feeding and opening mechanism of an agricultural product packaging machine.

Background

Packaging machines are a type of machine for packaging products, which has the function of protecting and beautifying, and are widely applied to various production fields, such as agricultural product processing.

The agricultural product can utilize packagine machine to pour into the packing bag with the agricultural product that processes in the course of working in general and pack, current packagine machine can use the manipulator to get the bag automatically with the vacuum packaging bag, automatic opening, in practice, normally place the bag material on getting the material bench, the rethread sucking disc manipulator absorbs the bag material and carries out the removal, then the sucking disc manipulator is when absorbing the bag material, because the position of not unidimensional wrapping bag on getting the material bench is different, consequently, need adjust repeatedly the position that the sucking disc absorbs, just can make things convenient for going on of follow-up opening bag and filling process, need consume longer time, thereby influence packing efficiency, therefore, an agricultural product packagine machine's bag feeding opening mechanism has been proposed and has solved above-mentioned problem.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a bag feeding and opening mechanism of an agricultural product packaging machine, which has the advantages of positioning packaging bags with different sizes, more accurate material taking and the like, and solves the problems that the packaging efficiency is influenced by the fact that the packaging bags with different sizes are different in position on a material taking table, so that the suction position of a sucker needs to be repeatedly adjusted, the subsequent bag opening and filling processes can be conveniently carried out, and longer time is required.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a send a bag opening mechanism of agricultural product packagine machine, includes the frame, the right side of frame is fixed with the material loading platform, be equipped with the location structure that carries out the location to the bag material on the material loading platform, the frame internal fixation has the transfer platform, be equipped with limit structure on the transfer platform, be equipped with material loading structure and transfer structure in the frame and be located between material loading platform and the transfer platform, still be equipped with on the frame and send a bag structure and open a bag structure;

the positioning structure comprises a connecting plate capable of moving left and right, a fixed rack is arranged in the connecting plate in a sliding manner, a locking piece for fastening the fixed rack is further arranged on the connecting plate, a moving plate is fixed on the right side of the fixed rack, and a positioning plate extending to the feeding table is fixed on the right side of the moving plate;

the limiting structure comprises two limiting plates which can move relatively or move oppositely.

Further, be fixed with the location cylinder in the frame, the output shaft of location cylinder is fixed in on the connecting plate, still be fixed with two gag levers on the material loading platform, connecting plate and movable plate can slide about the outside of gag lever levers.

Further, the transfer bench rotates and is provided with adjusting screw, adjusting screw's outside threaded connection has two fly leaves, and two limiting plates are fixed in respectively on the fly leaf, adjusting screw's screw thread surface is two sections and screw thread opposite direction, be fixed with two gag lever posts on the transfer bench, two fly leaves can be in gag lever post outside side-to-side motion.

Further, the feeding structure comprises a downward moving cylinder, an output shaft of the downward moving cylinder is fixed with a fixing frame, a mounting frame is fixed on the fixing frame, a mounting column is hinged to the left end of the mounting frame, a turnover cylinder is hinged to the mounting frame, the output end of the turnover cylinder is hinged to the right end of the mounting column, and a feeding sucker is fixed to the bottom surface of the mounting column.

Further, the transfer structure comprises a linear motor fixed on the frame, the output end of the linear motor is fixed with a mounting plate driven by the linear motor to perform left-right linear motion, and the bottom of the mounting plate is fixed with a plurality of clamping cylinders which are obliquely arranged.

Further, send a bag structure to include the pay-off motor, the output shaft of pay-off motor is fixed with the feed roll, the top surface of feed roll extends to the transfer table top surface, be fixed with down the air cylinder in the frame, the output shaft of air cylinder is fixed with down the pressure frame, the bottom surface rotation of pressure frame is equipped with down the pinch roller down.

Further, open bag structure includes the actuating cylinder, the output shaft of actuating cylinder is fixed with movable sucking disc, the rear side of frame is fixed with fixed sucking disc, the rear side of frame is fixed with the rotating electrical machines, the output shaft of rotating electrical machines is fixed with the rotation axis, the outside of rotation axis is fixed with two rotor plates, two rotate between the rotor plate bottom and be connected with the axis of rotation, the outside of axis of rotation is fixed with the rotor block, two it has the actuating cylinder to articulate between the rotor plate, the output of actuating cylinder articulate in one side that the axis of rotation was kept away from to the rotor block, the both ends of axis of rotation all are fixed with and open the bag and collude, the outside of axis of rotation is fixed with two drive plates, two the tip of drive plate is fixed with the actuating lever jointly, the both ends of actuating lever all are fixed with the installation strip, two the bottom of installation strip all is fixed with and presss from both sides the bag cylinder.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. this agricultural product packagine machine send a bag opening mechanism, positioning cylinder is flexible, the connecting plate can drive the movable plate and slide about the outside of gag lever post, alright make the locating plate can be at last material bench side-to-side motion, can be according to the size of bag material, adjust the position of locating plate, fixed rack slides in the connecting plate side-to-side, the rethread retaining member locks, can change the distance of connecting plate and locating plate, make the range of motion of locating plate bigger, when adjusting screw is rotatory, two fly leaves can be under the restriction effect of gag lever post, relative motion or the motion of being on a back of the body each other, alright be through the interval of two limiting plates of the size synchronous regulation of bag material, make the bag material when carrying out pay-off, put the position more accurate, more help improving feeding efficiency.

2. This agricultural product packagine machine send bag opening mechanism, rotating electrical machines drive the rotation axis to rotate, the driving plate drives the actuating lever rotation, make the installation strip drive press from both sides the bag cylinder anticlockwise rotation round the rotation axis, alright with the bag material from the level state adjustment of putting to vertical state of putting, more be convenient for agricultural product bagging-off, the rotation axis rotates, the rotation plate follows the rotation axis simultaneously and rotates, it is colluded to open the bag and inserts in the sack all the time, make the sack be in open state all the time in the change position, after having avoided the bag material adjustment position, the sack is closed, influence bagging-off.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a bottom view of the structure of the present utility model;

FIG. 3 is a schematic view of the positional relationship between a stationary rack and a locking member according to the present utility model;

FIG. 4 is a schematic view of a loading structure and a transfer structure of the present utility model;

FIG. 5 is a schematic diagram of a bag feeding structure according to the present utility model;

fig. 6 is a schematic view of the bag opening structure of the present utility model.

In the figure: 1. a frame; 2. a feeding table; 3. a positioning structure; 301. positioning a cylinder; 302. a connecting plate; 303. a fixed rack; 304. a locking member; 305. a moving plate; 306. a positioning plate; 307. a positioning rod; 4. a transfer station; 5. a limit structure; 501. adjusting a screw; 502. a movable plate; 503. a limiting plate; 504. a limit rod; 6. a feeding structure; 601. a downward moving cylinder; 602. a fixing frame; 603. a mounting frame; 604. a mounting column; 605. a turnover cylinder; 606. feeding sucking discs; 7. a transfer structure; 701. a linear motor; 702. a mounting plate; 703. a clamping cylinder; 8. a bag feeding structure; 801. a feeding motor; 802. a feed roller; 803. a pressing cylinder; 804. a pressing frame is pressed down; 805. a lower pinch roller; 9. a bag opening structure; 901. a driving cylinder; 902. a movable sucker; 903. fixing a sucker; 904. a rotating electric machine; 905. a rotation shaft; 906. a rotating plate; 907. a rotating shaft; 908. opening a bag hook; 909. a rotating block; 910. a rotary cylinder; 911. a driving plate; 912. a driving rod; 913. a mounting bar; 914. and a bag clamping cylinder.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, a bag feeding and opening mechanism of an agricultural product packaging machine in this embodiment includes a frame 1, a feeding table 2 is fixed on the right side of the frame 1, a positioning structure 3 for positioning a bag material is arranged on the feeding table 2, a transferring table 4 is fixed in the frame 1, a limiting structure 5 is arranged on the transferring table 4, a feeding structure 6 and a transferring structure 7 are arranged on the frame 1 and between the feeding table 2 and the transferring table 4, and a bag feeding structure 8 and a bag opening structure 9 are also arranged on the frame 1.

The bagging material is placed in the material loading platform 2, the location structure 3 can be adjusted, thereby carry out spacingly to not unidimensional bagging material, the material loading structure 6 presss from both sides the bagging material of placing on the material loading platform 2 and gets, and shift to the limit structure 5 of shifting the platform 4 through shifting the structure 7 in, limit structure 5 also can the size of bagging material adjust, after the bagging material shifts to shifting on the platform 4, send the bagging material to opening bag structure 9 department through sending bag structure 8 again, and open the bagging process through opening bag structure 9, can make things convenient for follow-up agricultural product to pour into the wrapping bag in, help improving the packing efficiency of agricultural product.

In this embodiment, as shown in fig. 1-3, the positioning structure 3 includes a positioning cylinder 301 fixed on the frame 1, a connecting plate 302 is fixed on an output shaft of the positioning cylinder 301, a fixed rack 303 is slidably disposed in the connecting plate 302, a locking member 304 for fastening the fixed rack 303 is further disposed on the connecting plate 302, a moving plate 305 is fixed on the right side of the fixed rack 303, a positioning plate 306 extending to the feeding table 2 is fixed on the right side of the moving plate 305, two positioning rods 307 are further fixed on the feeding table 2, and the connecting plate 302 and the moving plate 305 can slide left and right outside the positioning rods 307.

Rectangular holes are formed in the feeding table 2, and the positioning plate 306 extends to the top surface of the feeding table 2 through the rectangular holes and can move left and right in the rectangular holes.

The positioning cylinder 301 stretches and contracts, the connecting plate 302 can drive the moving plate 305 to slide left and right on the outer side of the positioning rod 307, the positioning plate 306 can move left and right on the feeding table 2, and the position of the positioning plate 306 can be adjusted according to the size of the bag material.

The fixed rack 303 slides left and right in the connecting plate 302, and then is locked by the locking piece 304, so that the distance between the connecting plate 302 and the positioning plate 306 can be changed, and the movement range of the positioning plate 306 is larger.

The locking member 304 is a bolt, the bolt is in threaded connection with the side surface of the connecting plate 302, the bolt is rotated to rotate and move downwards until the bottom surface of the bolt is in contact with the top surface of the fixed rack 303, and the sliding position of the fixed rack 303 can be limited.

In this embodiment, as shown in fig. 1-2, the limiting structure 5 includes an adjusting screw 501 rotatably disposed on the transfer table 4 through a bearing, two movable plates 502 are screwed on the outer side of the adjusting screw 501, two movable plates 502 are fixed with limiting plates 503, the limiting plates 503 move left and right on the top surface of the transfer table 4, two limiting rods 504 are fixed on the transfer table 4, and the two movable plates 502 can move left and right on the outer side of the limiting rods 504.

The opposite sides of the two movable plates 502 are fixed with connecting plates through fixing rods, the opposite sides of the two connecting plates are fixed with connecting plates extending to the top surface of the transfer table 4, the opposite sides of the two limiting plates 503 are respectively fixed with the left connecting plates and the opposite sides of the right connecting plates, the transfer table 4 is provided with long strip holes, the connecting plates extend to the top surface of the transfer table 4 through the long strip holes, and the connecting plates can move left and right in the long strip holes.

The screw thread of adjusting screw 501 surface is two sections and screw thread opposite direction, and when adjusting screw 501 rotated, two fly leaves 502 can be under the restriction effect of gag lever post 504, relative motion or the opposite movement, alright through the size adjustment of bag material the interval of two fly leaves 503.

In this embodiment, as shown in fig. 4, the feeding structure 6 includes a downward moving cylinder 601 fixed on the frame 1, an output shaft of the downward moving cylinder 601 is fixed with a fixing frame 602, a mounting frame 603 is fixed on the fixing frame 602, a mounting column 604 is hinged to the left end of the mounting frame 603, a turnover cylinder 605 is hinged to the mounting frame 603, an output end of the turnover cylinder 605 is hinged to the right end of the mounting column 604, and a feeding sucker 606 is fixed on the bottom surface of the mounting column 604.

The downward moving cylinder 601 stretches out and draws back, the mounting column 604 is driven to move up and down through the fixing frame 602 and the mounting frame 603, the downward moving cylinder 601 ejects, the mounting column 604 moves down, the material loading sucker 606 can suck the bag material, the turnover cylinder 605 ejects the material loading sucker 606, the mounting column 604 drives the material loading sucker 606 to turn clockwise, and the transfer structure 7 is convenient to clamp and take the bag material.

In this embodiment, as shown in fig. 4, the transfer structure 7 includes a linear motor 701 fixed on the frame 1, an output end of the linear motor 701 is fixed with a mounting plate 702 driven to perform a left-right linear motion, and a plurality of clamping cylinders 703 are fixed at the bottom of the mounting plate 702.

When the feeding structure 6 adsorbs the bag material and drives the bag material to turn over, the linear motor 701 drives the clamping cylinder 703 to move to the rightmost side, the bag material is clamped by the clamping cylinder 703, and the linear motor 701 drives the clamping cylinder 703 to move to the left side, so that the bag material is placed on the transfer table 4.

In this embodiment, as shown in fig. 5, the bag feeding structure 8 includes a feeding motor 801 fixed on the left side of the transfer table 4, a feeding roller 802 is fixed on an output shaft of the feeding motor 801, a top surface of the feeding roller 802 extends to the top surface of the transfer table 4, a lower pressing cylinder 803 is fixed on the frame 1, a lower pressing frame 804 is fixed on an output shaft of the lower pressing cylinder 803, and a lower pressing wheel 805 is rotatably provided on a bottom surface of the lower pressing frame 804.

The transfer table 4 is provided with a fixing hole, and the top surface of the feeding roller 802 extends to the top surface of the transfer table 4, so that the bag material can be attached to the top surface of the feeding roller 802.

The lower pressing cylinder 803 stretches out and draws back, the lower pressing wheel 805 is driven to move up and down by the lower pressing frame 804, when the feeding structure 6 and the transferring structure 7 transfer the bag materials to the transferring table 4, the lower pressing cylinder 803 is in a retracted state, the lower pressing wheel 805 is lifted, the bag materials are placed on the transferring table 4, the lower pressing cylinder 803 is ejected out, the lower pressing wheel 805 is driven to move downwards, the bag materials are pressed on the feeding roller 802, the feeding roller 802 is driven to rotate by the output shaft of the feeding motor 801, and the bag materials can be conveyed to the bag opening structure 9.

In this embodiment, as shown in fig. 6, the bag opening structure 9 includes a driving cylinder 901 fixed on a frame 1, a movable suction cup 902 is fixed on an output shaft of the driving cylinder 901, a fixed suction cup 903 is fixed on a rear side of the frame 1, a rotating motor 904 is fixed on a rear side of the frame 1, a rotating shaft 905 rotationally connected with the frame 1 through a bearing is fixed on an output shaft of the rotating motor 904, two rotating plates 906 are fixed on an outer side of the rotating shaft 905, a rotating shaft 907 is rotationally connected between bottom ends of the two rotating plates 906 through a bearing, a rotating block 909 is fixed on an outer side of the rotating shaft 907, a rotating cylinder 910 is hinged between the two rotating plates 906, an output end of the rotating cylinder 910 is hinged to one side of the rotating block 909 far from the rotating shaft 907, bag opening hooks 908 are fixed on two ends of the rotating shaft 907, two driving plates 911 are fixed on an outer side of the rotating shaft 905, mounting bars 913 are fixed on end portions of the two driving plates 911 together, and bag clamping cylinders 914 are fixed on bottom ends of the two mounting bars 913.

After the bag feeding structure 8 feeds the bag material between the fixed suction cup 903 and the movable suction cup 902, as shown in fig. 6, two bag clamping cylinders 914 clamp two ends of the bag material, the fixed suction cup 903 sucks the lower surface of the bag material, the driving cylinder 901 is ejected, the movable suction cup 902 sucks the upper surface of the bag material, the driving cylinder 901 is retracted, the movable suction cup 902 moves upwards, after the bag opening is opened, the rotating cylinder 910 is ejected, the rotating block 909 drives the rotating shaft 907 to rotate, the bag opening hook 908 is inserted into the bag opening, the rotating shaft 905 is driven to rotate by the rotating motor 904, the driving plate 911 drives the driving rod 912 to rotate, the mounting strip 913 drives the bag clamping cylinder 914 to rotate anticlockwise around the rotating shaft 905, the bag material can be adjusted from a horizontal state to a vertical state, the rotating plate 906 simultaneously rotates along with the rotating shaft 905, the bag opening hook 908 is always inserted into the bag opening, and the bag opening is always in an open state while the bag material is in a conversion direction.

Through adopting above-mentioned bag opening mechanism that send, realized carrying out the pay-off to the wrapping bag of equidimension, application scope is more extensive, and its concrete theory of operation is as follows:

before bag feeding, the fixed rack 303 slides left and right in the connecting plate 302, then is locked by the locking piece 304, the distance between the connecting plate 302 and the positioning plate 306 is adjusted, then the positioning cylinder 301 stretches and contracts, the connecting plate 302 can drive the movable plate 305 to slide left and right on the outer side of the positioning rod 307, the positioning plate 306 can move left and right on the feeding table 2, the position of the positioning plate 306 can be adjusted according to the size of a bag material, meanwhile, the two movable plates 502 can move relatively or back to back under the limiting action of the limiting rod 504 by rotating the adjusting screw 501, and the distance between the two limiting plates 503 can be synchronously adjusted according to the size of the bag material;

after the adjustment is finished, the bag material is placed on the feeding table 2 and is positioned through the positioning plate 306, so that the feeding position of the bag material is more accurate, the downward moving cylinder 601 is ejected, the mounting column 604 moves downward, the bag material can be sucked by the feeding sucker 606, the bag material is ejected through the overturning cylinder 605, the mounting column 604 drives the feeding sucker 606 to overturn clockwise, the linear motor 701 drives the clamping cylinder 703 to move to the rightmost side, the bag material is clamped by the clamping cylinder 703, the linear motor 701 drives the clamping cylinder 703 to move leftwards, and the bag material is placed on the transfer table 4 and is positioned between the two limiting plates 503;

the lower pressing cylinder 803 is ejected out to drive the lower pressing wheel 805 to move downwards so as to press the bag material on the feeding roller 802, and then the feeding roller 802 is driven to rotate by the output shaft of the feeding motor 801, so that the bag material can be sent to the bag opening structure 9;

after the bag material is sent between the fixed suction cup 903 and the movable suction cup 902, two bag clamping cylinders 914 in the state shown in fig. 6 clamp two ends of the bag material, the fixed suction cup 903 sucks the lower surface of the bag material, the driving cylinder 901 is ejected, the movable suction cup 902 sucks the upper surface of the bag material, the driving cylinder 901 is retracted, the movable suction cup 902 moves upwards, the rotating cylinder 910 ejects after the bag opening is opened, the rotating block 909 drives the rotating shaft 907 to rotate, the bag opening hook 908 is inserted into the bag opening, the rotating shaft 905 is driven to rotate by the rotating motor 904, the driving plate 911 drives the driving rod 912 to rotate, the mounting strip 913 drives the bag clamping cylinder 914 to rotate anticlockwise around the rotating shaft 905, the bag material can be adjusted from the horizontal placement state to the vertical placement state, agricultural products are more convenient to bag, when the rotating shaft 905 rotates, the rotating plate 906 simultaneously rotates along with the rotating shaft 905, the bag opening hook 908 is always inserted into the bag opening, the bag opening is always in the open state when the bag opening is in the direction, and the bag opening is prevented from being closed after the bag opening is adjusted.

The control mode of the utility model is controlled by the controller, the control circuit of the controller can be realized by simple programming by a person skilled in the art, the supply of power also belongs to common knowledge in the art, and the utility model is mainly used for protecting the mechanical device, so the utility model does not explain the control mode and circuit connection in detail.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a send a bag opening mechanism of agricultural product packagine machine, its characterized in that, including frame (1), the right side of frame (1) is fixed with material loading platform (2), be equipped with on material loading platform (2) and carry out location structure (3) to the bag material, frame (1) internal fixation has to shift platform (4), be equipped with limit structure (5) on shifting platform (4), be equipped with material loading structure (6) and transfer structure (7) on frame (1) and be located between material loading platform (2) and shifting platform (4), still be equipped with on frame (1) and send bag structure (8) and open bag structure (9);

the positioning structure (3) comprises a connecting plate (302) capable of moving left and right, a fixed rack (303) is arranged in the connecting plate (302) in a sliding manner, a locking piece (304) for fastening the fixed rack (303) is further arranged on the connecting plate (302), a moving plate (305) is fixed on the right side of the fixed rack (303), and a positioning plate (306) extending to the upper table (2) is fixed on the right side of the moving plate (305);

the limiting structure (5) comprises two limiting plates (503) which can move relatively or move oppositely.

2. The bag feeding and opening mechanism of an agricultural product packaging machine according to claim 1, wherein: the machine frame (1) is fixedly provided with a positioning cylinder (301), an output shaft of the positioning cylinder (301) is fixed on a connecting plate (302), two positioning rods (307) are further fixed on the feeding table (2), and the connecting plate (302) and the moving plate (305) can slide left and right on the outer sides of the positioning rods (307).

3. The bag feeding and opening mechanism of an agricultural product packaging machine according to claim 1, wherein: the automatic transfer device is characterized in that an adjusting screw (501) is rotatably arranged on the transfer table (4), two movable plates (502) are connected with the outer side of the adjusting screw (501) in a threaded mode, two limiting plates (503) are respectively fixed on the two movable plates (502), threads on the outer surface of the adjusting screw (501) are two sections and opposite in thread direction, two limiting rods (504) are fixed on the transfer table (4), and the two movable plates (502) can move left and right on the outer sides of the limiting rods (504).

4. The bag feeding and opening mechanism of an agricultural product packaging machine according to claim 1, wherein: the feeding structure (6) comprises a downward moving cylinder (601), an output shaft of the downward moving cylinder (601) is fixed with a fixing frame (602), a mounting frame (603) is fixed on the fixing frame (602), a mounting column (604) is hinged to the left end of the mounting frame (603), a turnover cylinder (605) is hinged to the mounting frame (603), the output end of the turnover cylinder (605) is hinged to the right end of the mounting column (604), and a feeding sucker (606) is fixed on the bottom surface of the mounting column (604).

5. The bag feeding and opening mechanism of an agricultural product packaging machine as claimed in claim 4, wherein: the transfer structure (7) comprises a linear motor (701) fixed on the frame (1), an output end of the linear motor (701) is fixed with a mounting plate (702) driven by the linear motor to perform left-right linear motion, and a plurality of clamping cylinders (703) obliquely arranged are fixed at the bottom of the mounting plate (702).

6. The bag feeding and opening mechanism of an agricultural product packaging machine according to claim 1, wherein: the bag feeding structure (8) comprises a feeding motor (801), a feeding roller (802) is fixed on an output shaft of the feeding motor (801), the top surface of the feeding roller (802) extends to the top surface of the transfer table (4), a lower pressing cylinder (803) is fixed on the frame (1), a lower pressing frame (804) is fixed on an output shaft of the lower pressing cylinder (803), and a lower pressing wheel (805) is arranged on the bottom surface of the lower pressing frame (804) in a rotating mode.

7. The bag feeding and opening mechanism of an agricultural product packaging machine according to claim 1, wherein: the bag opening structure (9) comprises a driving air cylinder (901), an output shaft of the driving air cylinder (901) is fixedly provided with a movable sucker (902), the rear side of the frame (1) is fixedly provided with a fixed sucker (903), the rear side of the frame (1) is fixedly provided with a rotating motor (904), an output shaft of the rotating motor (904) is fixedly provided with a rotating shaft (905), the outer sides of the rotating shaft (905) are fixedly provided with two rotating plates (906), a rotating shaft (907) is rotatably connected between the bottom ends of the two rotating plates (906), the outer sides of the rotating shaft (907) are fixedly provided with rotating blocks (909), two rotating plates (906) are hinged with rotating air cylinders (910), the output ends of the rotating air cylinders (910) are hinged to one side, far away from the rotating shaft (907), both ends of the rotating shaft (907) are fixedly provided with bag opening hooks (908), the outer sides of the rotating shaft (905) are fixedly provided with two driving plates (912), the end parts of the two driving plates (911) are jointly fixedly provided with driving rods (912), and the bottom ends of the driving rods (914) are fixedly provided with two air cylinders (913).