Positive and horizontal automatic palletizing machine

By using an automatic tray-dispatching machine that directly grabs the bottom of the egg tray and employs two sets of gripping devices and one drive device to achieve synchronous gripping and conveying, the high cost and low efficiency problems caused by the flipping mechanism are solved, and the equipment is simplified and efficiency is improved.

CN120840962APending Publication Date: 2025-10-28DAMUREN MASCH (JIAOZHOU) CO LTD
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Patent Information

Application Number
CN202511151013.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-18
Publication Date
2025-10-28

AI Technical Summary

Technical Problem

Existing egg tray grabbing and transferring equipment requires an additional turning mechanism, resulting in high equipment cost and low working efficiency.

Method used

The egg tray is placed horizontally to directly grasp the bottom of the tray. Two gripping devices and one drive device are used to achieve synchronous gripping and conveying, eliminating the need for a flipping mechanism.

Benefits of technology

It reduces equipment manufacturing costs, improves work efficiency, provides stable and flexible grasping, has a high degree of integration, and is easy to move.

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Abstract

The invention belongs to the technical field of delivery equipment, and discloses a horizontal automatic delivery machine which comprises a driving device located at the bottom. The two grabbing devices are located on the driving device and are distributed in a bilateral symmetry mode; the two sets of gripping devices are respectively in transmission connection with the driving device and are simultaneously driven to grip the bottoms of the egg trays from bottom to top, and the two sets of gripping devices simultaneously grip one egg tray at a time; the two bearing devices are located above the grabbing device and are symmetrically distributed left and right; a plurality of egg supports which are stacked up and down are horizontally arranged between the two sets of bearing devices; the conveying device is positioned behind the driving device and is used for circularly conveying; the initial end of the conveying device is located between the two grabbing devices. Stacked egg supports are placed on the bearing device in a horizontal placing mode, the bottoms of the egg supports are grabbed by the two sets of grabbing devices to achieve single-piece grabbing, the placing mode of the egg supports is simplified, a turnover mechanism can be omitted, the equipment manufacturing cost can be reduced, and working procedure time consumption can be reduced.
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Description

Technical Field

[0001] This invention relates to the field of dispatching equipment technology, specifically to an automatic dispatching machine for horizontal placement. Background Technology

[0002] In the process of loading eggs into trays, the gripping and transfer of egg trays are crucial steps. Currently, most egg tray dispensers on the market employ either vertical gripping (egg trays are placed upright, and after gripping, the height of the egg tray aligns with the conveying direction) or horizontal gripping (egg trays are placed horizontally, and after gripping, the height of the egg tray is perpendicular to the conveying direction). However, both methods have significant technical problems: after vertical gripping, if the egg tray needs to be transferred to a horizontal conveying or stacking position, it needs to be rotated an additional 90°; after horizontal gripping, if it needs to be adjusted to an upright position, it needs to be rotated an additional 180°. Regardless of the method, an additional turning mechanism (such as a rotary cylinder, turning table, etc.) is required, which not only increases the equipment manufacturing cost but also reduces the overall work efficiency due to the time-consuming turning action. Secondly, the tray dispensing mechanism and the conveying mechanism are driven by two separate motors, and the linkage between the two motors requires PLC control, which also leads to higher costs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an automatic tray-dispensing machine that directly grabs the egg trays placed upright from the bottom, avoiding subsequent flipping operations, thereby reducing equipment costs and improving work efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An automatic egg tray dispenser for horizontal placement includes a drive unit located at the bottom; two gripping devices located on the drive unit and symmetrically distributed on the left and right; the two gripping devices are respectively connected to the drive unit and are simultaneously driven to grip the bottom of the egg tray from bottom to top, and the two gripping devices grip one egg tray at a time; two supporting devices located above the gripping devices and symmetrically distributed on the left and right; multiple egg trays stacked vertically are placed horizontally between the two supporting devices; and a conveying device located behind the drive unit and circulates from front to back; the initial end of the conveying device is located between the two gripping devices.

[0006] By adopting the above solution, the upright placement automatic tray dispatching machine places the stacked egg trays on the support device in an upright placement manner. Two sets of gripping devices grip the bottom of the egg trays to achieve single-piece gripping, which simplifies the placement of egg trays, eliminates the need for a flipping mechanism, reduces equipment manufacturing costs, and reduces process time.

[0007] In a preferred embodiment of an automatic pallet dispatching machine, the drive unit includes two drive bases distributed left and right, a drive motor fixedly installed between the two drive bases, two drive shafts concentrically connected to the motor shafts and extending left and right through the bases, a rocker arm fixedly connected to the drive shaft at only one end, and a rocker arm movably connected to the end of the rocker arm away from the drive shaft. The drive motors simultaneously drive the left and right rocker arms to rotate, thereby causing the two rocker arms to rock up and down, thus providing power to the gripping device. The rocker arm is a length-adjustable lead screw; by adjusting the length of the lead screw, the total length of the rocker arm is changed, thereby adjusting the gripping tightness of the gripper, which provides good application flexibility.

[0008] As a preferred embodiment of the horizontal automatic pallet dispatching machine, the drive unit also includes two support legs fixed to the front foot of the drive base and two swivel casters fixed to the rear foot of the drive base; this ensures the stability of the equipment during operation and facilitates the movement and adjustment of the work position.

[0009] In a preferred embodiment of an automatic egg tray dispenser, the gripping device includes a gripping frame, at least two guide rods vertically fixed inside the gripping frame, a slide block slidably mounted on all the guide rods and capable of sliding up and down along the guide rods, two sets of claw seats rotatably mounted inside the slide blocks and arranged facing each other, and two sets of gripping control components distributed at the front and rear ends of the slide blocks and driving the two sets of claw seats to rotate synchronously inward or outward; the slide block is movably connected to a rocker arm at the end away from the rocker arm. When the slide block moves upward along the guide rods, the gripping control components control the two sets of claw seats to rotate synchronously outward, causing the two sets of claw seats to open, thereby facilitating the gripping of the bottom of the egg nest; when the slide block moves downward along the guide rods, the gripping control components control the two sets of claw seats to rotate synchronously inward, causing the two sets of claw seats to close, gripping the bottom of the egg nest and then pulling down to separate the egg tray.

[0010] In a preferred embodiment of an automatic pallet dispatcher, the gripping control component includes a first support arm movably connected to the main frame, a first gripper connected above the first support arm and fixedly connected to one of the sets of gripper base shafts, a second gripper fixedly connected to the remaining set of gripper base shafts, and a second support arm movably connected to the first support arm. Through the linkage between the first and second support arms, the first and second grippers are driven to open and close synchronously, thereby driving the two sets of gripper bases to open and close synchronously, ensuring uniform gripping force.

[0011] As a preferred embodiment of an automatic egg tray placement machine, a number of grippers are fixedly connected to the gripper base in a linear array along its length. The gripper head is provided with a row of evenly distributed tooth tips. By gripping the bottom of the egg nest in the egg tray with the tooth tips, the contact friction is increased, and the egg tray is prevented from slipping.

[0012] As a preferred embodiment of an automatic egg tray dispenser, the support device includes a support frame, a support seat movably installed inside the support frame, two sets of limiting stops fixed to the support frame and distributed on the front and rear sides of the support seat, multiple claws linearly arrayed along the bottom edge of the support seat, and an anti-slip pad that completely covers the side surface of the support seat to prevent slippage between the side of the egg tray and the support seat; the claws only support a small area of ​​the edge of the egg tray, which reduces obstruction of the egg tray and ensures stability through multi-point support.

[0013] In a preferred embodiment of an automatic pallet dispatching machine, the supporting device further includes guide grooves located on the front and rear sides of the supporting frame and inclined downwards, as well as return springs distributed on the front and rear sides of the supporting frame that always pull the supporting seat downwards. The front and rear ends of the supporting seat are always located within the guide grooves, which allow the supporting seat to shift laterally and vertically. When the supporting seat shifts laterally, it can increase the distance between the two supporting seats, thereby ensuring that the egg tray is smoothly pulled down and grabbed. When the supporting seat shifts vertically, it can cooperate with the tension of the return springs, so that when the slide pushes against the supporting seat, the supporting seat has the capacity to shift upwards, thereby reducing the impact damage between the two. Then, the return springs pull it down to reset, thereby ensuring that the entire grabbing process is carried out in an orderly manner.

[0014] In a preferred embodiment of an automatic pallet dispatching machine, the conveying device includes a conveying frame, a drive gear concentrically connected to a drive shaft, a driven gear rotatably mounted within the conveying frame, a rack that meshes and drives the drive gear and the driven gear, a first drive wheel coaxially connected to the driven gear, a second drive wheel rotatably mounted at the rear of the conveying frame, a third drive wheel rotatably mounted at the front of the conveying frame, and a drive bar that circulates along the first drive wheel, the second drive wheel, and the third drive wheel. At least two drive bars are provided, and all drive bars are parallel to each other. After the egg tray is grabbed, it is placed on the drive bar and conveyed from front to back via the drive bar, thereby ensuring smooth conveying.

[0015] In a preferred embodiment of an automatic pallet dispatcher, the conveying device further includes two sets of tensioning wheels that can rotate inside the conveying frame and are sequentially distributed on the front and rear sides of the drive wheel. The shafts of the two sets of tensioning wheels extend through the horizontal grooves opened on the conveying frame to the outside of the conveying frame. The shafts of the two sets of tensioning wheels are always connected by a tension spring. The tension of the drive bar is automatically adjusted by the tension of the tension spring to avoid the drive bar from loosening and causing conveying jams.

[0016] The beneficial effects of this invention are as follows: By driving the two sets of gripping devices on the left and right sides in a synchronous manner, the device grips the bottom of the egg tray placed upright from bottom to top. With the support device supporting the edge of the egg tray, the tray is finally transported to the next unit by the conveyor device. The entire process can be completed stably by transferring the egg tray without additional flipping, which effectively solves the problem of flipping required by traditional upright / inverted gripping.

[0017] The specific advantages are as follows:

[0018] 1. Simplified structure: Eliminating the flipping mechanism reduces equipment manufacturing costs;

[0019] 2. Efficiency Improvement: Grabbing and transferring are completed simultaneously, reducing process time;

[0020] 3. Stable gripping: The bottom gripping mechanism, combined with the edge support of the support device, prevents the egg tray from deforming or slipping.

[0021] 4. High flexibility: The joystick uses a lead screw to adjust the length and adjust the clamping tightness of the gripper;

[0022] 5. High integration: A single drive motor powers both the gripping and conveying devices, resulting in high overall integration and reduced costs.

[0023] 6. Easy to move: The swivel casters at the rear of the drive base facilitate the overall movement of the equipment and allow for flexible adjustment of the work position. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 The three-dimensional structure of the automatic pallet dispatcher is horizontal. Figure 1 ;

[0026] Figure 2 The three-dimensional structure of the automatic pallet dispatcher is horizontal. Figure 2 ;

[0027] Figure 3 Three-dimensional structure of the drive device Figure 1 ;

[0028] Figure 4 Three-dimensional structure of the drive device Figure 2 ;

[0029] Figure 5 A three-dimensional structural diagram of the gripping device and the supporting device;

[0030] Figure 6 Three-dimensional structure of the gripping device Figure 1 ;

[0031] Figure 7 Three-dimensional structure of the gripping device Figure 2 ;

[0032] Figure 8 for Figure 6 A magnified view of a section at point A in the middle;

[0033] Figure 9 Three-dimensional structure for supporting device Figure 1 ;

[0034] Figure 10 Three-dimensional structure for supporting device Figure 2 ;

[0035] Figure 11 for Figure 9 A magnified view of a section at point B in the middle;

[0036] Figure 12 This is a three-dimensional structural diagram of the conveying device;

[0037] Figure 13 A three-dimensional structural diagram to show the internal structure of the conveying device;

[0038] In the diagram, the markings are: 1-Drive unit; 11-Drive base; 12-Drive motor; 13-Drive shaft; 14-Rocker arm; 15-Rocker stick; 16-Support leg; 17-Universal caster; 2-Gripping device; 21-Gripping frame; 22-Guide rod; 23-Slide seat; 24-Claw seat; 241-Gripper; 242-Tooth tip; 25-Gripping control component; 251-Support arm one; 252-Gripper one; 253-Gripper two ; 254-Support arm two; 3-Support device; 31-Support frame; 32-Support seat; 321-Claw; 33-Anti-slip mat; 34-Limiting groove; 35-Reset tension spring; 4-Egg tray; 5-Conveying device; 51-Conveying frame; 52-Driving gear; 53-Driven gear; 54-Transmission wheel one; 55-Transmission wheel two; 56-Transmission wheel three; 57-Transmission bar; 58-Tensioning wheel; 59-Tensioning spring. Detailed Implementation

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] like Figures 1 to 2As shown, an automatic egg tray dispenser is used to dispense egg trays 4 one by one. The automatic egg tray dispenser includes: a drive unit 1 located at the bottom; two sets of gripping devices 2 located on the drive unit 1 and symmetrically distributed on the left and right; the two sets of gripping devices 2 are respectively connected to the drive unit 1 and are driven simultaneously to grip the bottom of the egg tray 4 from bottom to top, and the two sets of gripping devices 2 grip one egg tray 4 at a time; two sets of supporting devices 3 located above the gripping devices 2 and symmetrically distributed on the left and right; multiple egg trays 4 stacked on top of each other are placed upright between the two sets of supporting devices 3; and a conveying device 5 located behind the drive unit 1 and circulates from front to back; the initial end of the conveying device 5 is located between the two sets of gripping devices 2. The automatic egg tray placement machine uses a horizontal placement method to place stacked egg trays 4 on the support device 3. Two sets of gripping devices 2 grip the bottom of the egg trays 4 to achieve single-piece gripping, which simplifies the placement method of the egg trays 4, eliminates the need for a flipping mechanism, reduces equipment manufacturing costs, and reduces process time.

[0041] like Figures 3 to 4 As shown, the drive device 1 includes two drive bases 11 distributed left and right, a drive motor 12 fixedly installed between the two drive bases 11, two drive shafts 13 concentrically connected to the motor shafts and extending left and right through the bases, a rocker arm 14 fixedly connected to the drive shaft 13 at only one end, and a rocker arm 15 movably connected to the end of the rocker arm 14 away from the drive shaft 13. The drive motor 12 simultaneously drives the two rocker arms 14 to rotate, thereby causing the two rocker arms 15 to rock up and down, thus providing power to the gripping device 2. The rocker arm 15 has an adjustable length lead screw. By adjusting the length of the lead screw, the total length of the rocker arm 15 is changed, thereby adjusting the gripping tightness of the gripper 241, which has good application flexibility.

[0042] Continue as Figures 3 to 4 As shown, regarding the drive unit 1, it also includes two support legs 16 fixed to the front foot of the drive base 11 and two swivel casters 17 fixed to the rear foot of the drive base 11; this ensures the stability of the equipment during operation and facilitates the movement and adjustment of the work position.

[0043] Working principle of drive unit 1: Drive unit 1 is the power source of the entire mechanism, used to synchronously drive the two sets of gripping devices 2 and the conveying device 5 for cyclic conveying. When drive motor 12 starts, it drives rocker arm 14 to rotate through drive shaft 13. Rocker arm 14 pushes or pulls slide 23 up and down along guide rod 22 through rocker arm 15, thereby providing power for the up and down gripping action; at the same time, it drives drive gear 52 to rotate through drive shaft 13, thereby providing power for the cyclic conveying of transmission bar 57. The above uses one drive motor 12 to provide power for both gripping device 2 and conveying device 5, which is highly integrated and reduces costs.

[0044] like Figures 5 to 8 As shown, the gripping device 2 includes a gripping frame 21, at least two guide rods 22 vertically fixed inside the gripping frame 21, a slide block 23 slidably mounted on all the guide rods 22 and capable of sliding up and down along the guide rods 22, two sets of claw seats 24 rotatably mounted inside the slide block 23 and arranged facing each other, and two sets of gripping control components 25 distributed at the front and rear ends of the slide block 23 and driving the two sets of claw seats 24 to rotate synchronously inward or outward; the slide block 23 is movably connected to a rocker arm 15 at the end away from the rocker arm 14. When the slide block 23 moves upward along the guide rods 22, the gripping control components 25 control the two sets of claw seats 24 to rotate synchronously outward, so that the two sets of claw seats 24 open, thereby facilitating the gripping of the bottom of the egg nest; when the slide block 23 moves downward along the guide rods 22, the gripping control components 25 control the two sets of claw seats 24 to rotate synchronously inward, so that the two sets of claw seats 24 close, gripping the bottom of the egg nest and then pulling down to separate the egg tray 4.

[0045] like Figure 6 As shown, the gripping control component 25 includes a first support arm 251 movably connected to the main frame, a first gripper 252 connected above the first support arm 251 and fixedly connected to one of the sets of gripper seats 24, a second gripper 253 fixedly connected to the remaining set of gripper seats 24, and a second support arm 254 movably connected to the first support arm 251. Through the linkage of the first support arm 251 and the second support arm 254, the first gripper 252 and the second gripper 253 are driven to open and close synchronously, thereby driving the two sets of gripper seats 24 to open and close synchronously, ensuring uniform gripping force.

[0046] like Figure 8 As shown, the claw base 24 has multiple grippers 241 arranged in a linear array along its length direction, and the claw head of the gripper 241 is provided with a row of evenly distributed tooth tips 242; the tooth tips 242 are used to grip the bottom of the egg nest in the egg tray 4, thereby increasing the contact friction and preventing the egg tray 4 from slipping.

[0047] Working principle of gripping device 2: Gripping device 2 is used to directly grip the bottom of egg tray 4. When the slide block 23 is driven upward by the rocker arm 15, the first support arm 251 and the second support arm 254 are restricted by the gripping frame 21 and retract, pushing the two sets of claw seats 24 to rotate and close synchronously. The tooth tips 242 of the gripper 241 contact the egg nest at the bottom of the egg tray 4 to complete the gripping. Conversely, when the slide block 23 is driven downward by the rocker arm 15, the first support arm 251 and the second support arm 254 unfold, pushing the two sets of claw seats 24 to open synchronously and release the egg tray 4. Of course, an infrared sensor can also be installed at the gripping device 2 to monitor the gripping situation of the egg tray 4 in real time. Once the missing egg tray 4 is detected, a signal will be fed back to the drive motor 12, and the operation will be paused.

[0048] like Figures 9 to 11As shown, the supporting device 3 includes a supporting frame 31, a supporting seat 32 movably installed inside the supporting frame 31, two sets of limiting brackets fixed to the supporting frame 31 and distributed on the front and rear sides of the supporting seat 32, multiple claws 321 linearly arranged along the bottom edge of the supporting seat 32, and an anti-slip pad 33 that completely covers the side surface of the supporting seat 32 to prevent slippage between the side of the egg tray 4 and the supporting seat 32; the claws 321 only support a small area of ​​the edge of the egg tray 4, which reduces the obstruction of the egg tray 4 and ensures stability through multi-point support.

[0049] Continue as Figures 9 to 11 As shown, regarding the supporting device 3, it also includes guide grooves opened on the front and rear sides of the supporting frame 31 and inclined downwards, and reset springs 35 distributed on the front and rear sides of the supporting frame 31 and always pulling down the supporting seat 32; the front and rear ends of the supporting seat 32 are always located in the guide grooves, and the supporting seat 32 can be offset laterally and vertically through the guide grooves. When the supporting seat 32 is offset laterally, it can increase the distance between the two supporting seats 32, thereby ensuring that the egg tray 4 can be smoothly pulled down and grabbed; when the supporting seat 32 is offset vertically, it can cooperate with the tension of the reset spring 35, so that when the slide 23 pushes against the supporting seat 32, the supporting seat 32 has the capacity to offset upwards, so as to reduce the impact damage between the two. Then, the reset spring 35 pulls down to reset, thereby ensuring that the entire grabbing is carried out in an orderly manner.

[0050] Working principle of the supporting device 3: The supporting device 3 is located above the gripping device 2 and is used to support the stacked egg trays 4, ensuring the stability of the egg trays 4 during the gripping process. When multiple egg trays 4 are stacked upright on the supporting device 3, the claws 321 support the edges of the egg trays 4 and are located exactly between the gaps of two adjacent egg trays 4, and the anti-slip pads 33 prevent the egg trays 4 from sliding. The slide 23 of the gripping device 2 pushes against the supporting seat 32, causing the supporting seat 32 to move laterally and vertically along the guide groove. When the supporting seat 32 shifts laterally, it can increase the distance between the two supporting seats 32, thereby ensuring that the egg trays 4 can be pulled down and gripped smoothly. When the supporting seat 32 shifts vertically, it can cooperate with the tension of the return spring 35, so that when the slide 23 pushes against the supporting seat 32, the supporting seat 32 has the capacity to shift upward, so as to reduce the impact damage between the two. Then, the return spring 35 pulls down to reset, thereby ensuring that the entire gripping process is carried out in an orderly manner.

[0051] like Figures 12 to 13As shown, the conveying device 5 includes a conveying frame 51, a drive gear 52 concentrically connected to the drive shaft 13, a driven gear 53 rotatably installed in the conveying frame 51, a rack that meshes the drive gear 52 and the driven gear 53, a drive wheel 54 coaxially connected to the driven gear 53, a drive wheel 55 rotatably installed behind the conveying frame 51, a drive wheel 56 rotatably installed in front of the conveying frame 51, and a drive bar 57 that circulates along the drive wheel 54, drive wheel 55, and drive wheel 56. There are at least two drive bars 57, and all drive bars 57 are parallel to each other. After the egg tray 4 is grabbed, it is placed on the drive bar 57 and conveyed from front to back through the drive bar 57, thereby ensuring smooth conveying.

[0052] Continue as Figures 12 to 13 As shown, regarding the conveying device 5, it also includes two sets of tensioning wheels 58 that can rotate inside the conveying frame 51 and are sequentially distributed on both sides of the drive wheel 54. The shafts of the two sets of tensioning wheels 58 extend through the horizontal grooves opened on the conveying frame 51 to the outside of the conveying frame 51. The shafts of the two sets of tensioning wheels 58 are always connected by a tension spring 59. The tension of the drive bar 57 is automatically adjusted by the tension of the tension spring 59 to prevent the drive bar 57 from becoming loose and causing the conveying to jam.

[0053] Working principle of conveying device 5: Conveying device 5 is located behind drive device 1 and is used to cyclically transport the grasped egg trays 4 from front to back to the target position (such as the packaging area or the next process). After grasping, drive motor 12 keeps running, and drives driven gear 53 to rotate through the meshing of drive gear 52 and rack. Driven gear 53 drives transmission wheel 1 54 to rotate. Transmission wheel 1 54 drives transmission wheel 2 55 and transmission wheel 3 56 to rotate synchronously through transmission bar 57, forming a cyclic conveying. When the grasped egg tray 4 rises with slide 23 to above the initial end of conveying device 5, transmission bar 57 of conveying device 5 transports egg tray 4 backward, completing the synchronous action of grasping and conveying. Of course, infrared sensors can also be installed at conveying device 5 to monitor the conveying status of egg tray 4 in real time. Once a missing egg tray 4 is detected, a signal will be fed back to drive motor 12, at which time operation will be paused.

[0054] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic pallet dispatching machine for horizontal placement, comprising a drive unit located at the bottom; Its features are: It also includes two sets of gripping devices located on the drive unit and symmetrically distributed on the left and right; the two sets of gripping devices are respectively connected to the drive unit and are driven simultaneously to grip the bottom of the egg tray from bottom to top, and the two sets of gripping devices can grip one egg tray at a time. It also includes two sets of support devices located above the grasping device and symmetrically distributed on the left and right; between the two sets of support devices, multiple egg trays stacked one on top of the other are placed horizontally. It also includes a conveying device located behind the drive unit and which circulates from front to back; The initial end of the conveying device is located between the two gripping devices.

2. The automatic palletizing machine for horizontal placement according to claim 1, characterized in that: The drive device includes two drive bases distributed on the left and right, a drive motor fixedly installed between the two drive bases, two drive shafts concentrically connected to the motor shafts and extending to the left and right through the bases, a rocker arm with only one end fixedly connected to the drive shaft, and a rocker arm movably connected to the end of the rocker arm away from the drive shaft; the rocker arm has an adjustable length lead screw.

3. The automatic palletizing machine for horizontal placement according to claim 2, characterized in that: The drive unit also includes two support feet fixed to the front foot of the drive base and two swivel casters fixed to the rear foot of the drive base.

4. The automatic palletizing machine for horizontal placement according to claim 1, characterized in that: The gripping device includes a gripping frame, at least two guide rods vertically fixed inside the gripping frame, a slide block slidably mounted on all the guide rods and capable of sliding up and down along the guide rods, two sets of claw seats rotatably mounted inside the slide blocks and arranged facing each other, and two sets of gripping control components distributed at the front and rear ends of the slide blocks and driving the two sets of claw seats to flip synchronously inward or synchronously outward; the slide block is movably connected to a rocker arm at the end away from the rocker arm.

5. The automatic palletizing machine according to claim 4, characterized in that: The gripping control assembly includes a first support arm movably connected to the main frame, a first gripper connected above the first support arm and fixedly connected to one of the sets of gripper base shafts, a second gripper fixedly connected to the remaining set of gripper base shafts, and a second support arm movably connected to the first support arm.

6. The automatic palletizing machine according to claim 4, characterized in that: The claw base is fixedly connected to a number of grippers arranged in a linear array along its length. The claw tips are provided with a row of evenly distributed tooth tips, which are used to grip the bottom of the egg nest in the egg tray.

7. The automatic palletizing machine for horizontal placement according to claim 1, characterized in that: The supporting device includes a supporting frame, a supporting seat movably installed inside the supporting frame, two sets of limiting brackets fixed to the supporting frame and distributed on the front and rear sides of the supporting seat, multiple claws linearly arranged along the bottom edge of the supporting seat, and an anti-slip pad that completely covers the side surface of the supporting seat; the claws only support a small area of ​​the edge of the egg tray.

8. The automatic pallet dispatching machine according to claim 7, characterized in that: The support device also includes guide grooves that are opened on the front and rear sides of the support frame and are inclined from top to bottom, and reset springs that are distributed on the front and rear sides of the support frame and always pull the support seat down; the front and rear ends of the support seat are always located in the guide grooves.

9. The automatic palletizing machine for horizontal placement according to claim 2, characterized in that: The conveying device includes a conveying frame, a driving gear concentrically connected to a drive shaft, a driven gear rotatably installed within the conveying frame, a rack that meshes and drives the driving gear and the driven gear, a first drive wheel coaxially connected to the driven gear, a second drive wheel rotatably installed behind the conveying frame, a third drive wheel rotatably installed in front of the conveying frame, and a drive bar that circulates along the first drive wheel, the second drive wheel, and the third drive wheel; the drive bar has at least two bars, and all drive bars are parallel to each other.

10. The automatic palletizing machine for horizontal placement according to claim 9, characterized in that: The conveying device also includes two sets of tensioning wheels that can rotate inside the conveying frame and are distributed sequentially on the front and rear sides of the drive wheel. The shafts of the two sets of tensioning wheels extend through the horizontal grooves opened on the conveying frame to the outside of the conveying frame. The shafts of the two sets of tensioning wheels are always connected by a tension spring.