Primary and secondary tray stacking machine

Abstract

The invention provides a primary and secondary tray stacking machine, and relates to the technical field of automatic logistics and warehousing, the primary and secondary tray stacking machine comprises a supporting device, a conveying device, a lifting device and a tray stacking device, and the conveying device is arranged on the supporting device and used for sequentially and alternately conveying secondary trays with goods and vacant primary trays; the lifting device is arranged on the supporting device and can drive the disc stacking device to ascend and descend. The disc stacking device comprises two forking devices which are oppositely arranged in the horizontal direction, each forking device comprises a forking crank driving mechanism and a forking plate connected with the forking crank driving mechanism, and the forking crank driving mechanisms can drive the forking plates to stretch out and draw back; through mutual cooperation of the conveying device, the lifting device and the tray stacking device, automatic tray stacking and conveying of the child trays and the mother trays can be achieved, the tray stacking effect is remarkable, and the working efficiency is high; on one hand, the chassis device is large in bearing strength and stable and reliable in disc stacking process, and on the other hand, the crank driving mechanism is adopted, the structure is simple, the telescopic action effect is remarkable, and controllability is high.

Description

Technical Field

[0001] The invention relates to the technical field of automated logistics and warehousing, and in particular to a mother-and-child tray stacking machine. Background Art

[0002] The mother-child pallet is a commonly used cargo transportation and storage tool, consisting of a larger mother pallet and one or more smaller child pallets. The mother pallet can be placed directly on the ground or on a shelf, while the child pallets can be stacked on the mother pallet to meet different logistics needs through combination.

[0003] When stacking mother-and-child pallets in the traditional way, a forklift is usually used to directly place the loaded child pallet on an empty mother pallet. The manual fork-picking method not only makes the stacking less regular, affecting the stacking effect, but also has low efficiency. Existing mother-and-child pallet stacking machines mostly use pneumatic telescopic and electric telescopic, and their transmission structure mostly uses sprocket transmission, etc., which have complex structure, poor controllability, and insufficient load-bearing capacity, affecting the stacking effect and efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a tray stacking machine to solve the above-mentioned technical problems existing in the prior art; the preferred technical scheme among the many technical schemes provided by the present invention can produce many technical effects; see the following description for details.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a mother-and-child pallet stacking machine, comprising a supporting device, a conveying device, a lifting device and a stacking device, wherein: the conveying device is arranged on the supporting device, and is used for alternately conveying loaded child pallets and empty mother pallets in sequence; the lifting device is arranged on the supporting device and is connected to the stacking device, and can drive the stacking device to rise and fall; the stacking device includes two fork-picking devices arranged opposite to each other in a horizontal direction, the fork-picking device includes a fork-picking crank driving mechanism and a fork plate connected to the fork-picking crank driving mechanism, and the fork-picking crank driving mechanism can drive the fork plate to extend and retract.

[0007] Preferably, the lifting device includes a lifting drive mechanism and two relatively arranged lifting frames, wherein: the two lifting frames are relatively arranged, the two fork-picking devices are respectively arranged on the two lifting frames, and the lifting drive mechanism is connected to the two lifting frames and can drive the two lifting frames to lift synchronously.

[0008] Preferably, the lifting drive mechanism includes a lifting power assembly and two transmission chain assemblies, and the transmission chain assembly includes a lifting chain and a sprocket transmission assembly, wherein: the two lifting chains are connected to the lifting power assembly through the corresponding sprocket transmission assemblies; and the two ends of the lifting chain are respectively connected to the top side and the bottom side of the corresponding lifting frame.

[0009] Preferably, the lifting device includes a lifting guide mechanism, and the lifting guide mechanism includes a lifting guide rail and a lifting slider, wherein: the lifting guide rail is vertically arranged on the supporting device; the lifting slider is fixedly connected to the lifting frame, and the lifting slider is arranged on the lifting guide rail and slidingly cooperates with the lifting guide rail.

[0010] Preferably, the lifting device comprises a lifting position sensing mechanism, which is arranged on the supporting device and is used for detecting the lifting position of the lifting frame.

[0011] Preferably, the fork crank power mechanism includes a crank drive assembly and a horizontal guide assembly, wherein: the horizontal guide assembly includes a fork guide rail and a fork slider that are slidably matched, the fork guide rail is fixedly set on the corresponding lifting frame, and the fork slider is connected to the fork plate; the crank drive assembly is transmission-connected to the fork plate, and can drive the fork plate and the fork slider to synchronously extend and retract along the fork guide rail.

[0012] Preferably, the crank drive assembly includes a fork power assembly, a crank and a rolling element, and a guide groove is provided on the fork plate, wherein: the fork power assembly is connected to the crank and can drive the crank to rotate; the rolling element can rotate on the crank, the rolling element is located in the guide groove, and rollingly cooperates with the guide groove.

[0013] Preferably, the stacking device further comprises a telescopic position sensing mechanism, which is disposed on the lifting frame and is used for detecting the telescopic position of the fork plate.

[0014] Preferably, the conveying device includes a conveying bracket, a conveying drive mechanism and a conveying roller mechanism, wherein: the conveying bracket is fixedly arranged on the supporting device and is located below the stacking device; the conveying drive mechanism and the conveying roller mechanism are both arranged on the conveying bracket, and the conveying roller mechanism includes a plurality of unit conveying rollers arranged in parallel, and all of the unit conveying rollers are connected to the conveying drive mechanism.

[0015] Preferably, the supporting device comprises a base frame, a vertical frame and a supporting frame, wherein: the number of the vertical frames is set to two, the two vertical frames are relatively arranged on both sides of the base frame, the two fork-picking devices are respectively liftable on the two vertical frames, and the bottom side of the vertical frame is provided with adjustable feet; the supporting frame is arranged on the base frame and is located between the two vertical frames, and the conveying device is arranged on the supporting frame.

[0016] The present invention provides a tray stacking machine having at least the following beneficial effects:

[0017] The mother-and-child tray stacking machine comprises a supporting device, a conveying device, a lifting device and a stacking device, wherein the supporting device is used for installing and supporting the conveying device, the lifting device and the stacking device.

[0018] The conveying device is arranged on the supporting device, and is used for conveying the sub-pallets with cargo and the empty mother pallets.

[0019] The lifting device is arranged on the supporting device, which is connected to the stacking device. The stacking device includes two fork-picking devices arranged relatively to each other in the horizontal direction. The fork-picking device includes a fork-picking crank mechanism and a fork plate connected to the fork-picking crank mechanism. When stacking, the conveying device conveys the sub-pallet with goods to the stacking device, and the two fork-picking devices are actuated, inserted into the fork grooves of the sub-pallet with goods, and lifted up under the drive of the lifting device. Then the conveying device conveys the empty mother pallet to the bottom of the sub-pallet with goods. At this time, the lifting device drives the sub-pallet with goods to descend and is placed on the empty mother pallet to complete the stacking.

[0020] The present invention can realize automatic stacking and transportation of loaded sub-pallets and empty mother pallets through the cooperation of the conveying device, the lifting device and the stacking device, which not only has a significant stacking effect but also has high working efficiency; the chassis device adopts two fork-picking devices arranged relatively to each other. On the one hand, the two fork-picking devices cooperate with each other, have high bearing strength, and the stacking process is stable and reliable; on the other hand, the fork-picking device adopts a crank drive mechanism, which has a simple structure, significant telescopic action effect, and strong controllability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the use state of the present invention;

[0023] Figure 2It is a schematic diagram of the structure of the present invention;

[0024] Figure 3 It is a schematic structural diagram of the lifting device and the stacking device of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the conveying device of the present invention from one perspective;

[0026] Figure 5 is a structural schematic diagram of the conveying device of the present invention from another perspective;

[0027] Figure 6 It is a structural schematic diagram of the conveying drive mechanism of the present invention;

[0028] Figure 7 It is an enlarged view of the A part of the present invention;

[0029] Figure 8 It is an enlarged view of part B of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the lifting drive mechanism of the present invention;

[0031] Fig.10 It is a structural schematic diagram of a forking device of the present invention from one perspective;

[0032] Fig.11 It is a structural schematic diagram of the forking device of the present invention from another perspective.

[0033] Reference numerals

[0034] 1. Support device; 11. Base frame; 12. Stand; 13. Support frame; 14. Adjustable feet; 2. Conveying device; 21. Conveying bracket; 22. Conveying drive mechanism; 221. Conveying power assembly; 222. Conveying transmission chain; 23. Conveying roller mechanism; 231. Unit conveying roller; 3. Lifting device; 31. Lifting drive mechanism; 311. Lifting power assembly; 3111. Driving shaft; 312. Transmission chain assembly; 3121. Input sprocket; 3122. Reversing sprocket; 3123. Lifting chain; 32. Lifting Frame; 33, lifting guide mechanism; 331, lifting guide rail; 332, lifting slider; 34, lifting position sensing mechanism; 341, travel switch; 342, U-shaped photoelectric switch; 343, light cutting plate; 4, stacking device; 41, fork crank driving mechanism; 411, fork guide rail; 412, fork slider; 413, fork power assembly; 414, crank; 415, rolling element; 42, fork plate; 421, guide groove; 43, telescopic position sensing mechanism; 431, inductive proximity sensor; 432, induction block. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] The present invention provides a tray stacking machine, referring to Figures 1 to 11 As shown, the mother-and-child tray stacking machine includes a supporting device 1, a conveying device 2, a lifting device 3 and a stacking device 4.

[0038] The conveying device 2 is arranged on the supporting device 1 and is located below the stacking device 4. The conveying device 2 is used for alternately conveying the loaded sub-pallets and the empty mother pallets in sequence; the lifting device 3 is arranged on the supporting device 1 and is connected to the stacking device 4, and the lifting device 3 can drive the stacking device 4 to rise and fall; the stacking device 4 includes two fork picking devices, which are arranged opposite to each other, and the fork picking devices include a fork picking crank driving mechanism 41 and a fork plate 42 connected to the fork picking crank driving mechanism 41, and the fork picking crank driving mechanism 41 can drive the fork plate 42 to extend and retract.

[0039] When stacking pallets, the staff first places the loaded sub-pallet on the conveying device 2 by a forklift, and the conveying device 2 conveys the loaded sub-pallet to between the two fork-picking devices. The fork plates 42 of the two fork-picking devices correspond to the notches on both sides of the slot of the loaded sub-pallet. At this time, the fork-picking crank drive mechanism 41 telescopes and drives the corresponding fork plates 42 to be inserted into the slot. After being inserted into place, the lifting device 3 is lifted, driving the loaded sub-pallet to be lifted, and then an empty mother pallet is placed on the conveying device 2. The conveying device 2 transports the empty mother pallet to the bottom of the loaded sub-pallet, and the lifting device 3 descends to place the loaded sub-pallet on the empty mother pallet. Thereafter, the conveying device 2 continues to transport the stacked sub-pallets.

[0040] In this way, the above-mentioned actions are repeated to achieve continuous stacking of the discs.

[0041] In the above process, the conveying device 2, the lifting device 3 and the stacking device 4 cooperate with each other, not only the mother-child pallets are stacked neatly and the stacking effect is significant, but also the mother-child pallets can be automatically and continuously stacked with high efficiency.

[0042] At the same time, the stacking device 4 has two forking devices. On the one hand, the two forking devices are forked from both sides of the mother-and-child pallet, with high bearing strength and stable and reliable stacking process. On the other hand, a crank drive mechanism is adopted, which has a simple structure, significant telescopic action effect and strong controllability.

[0043] Embodiment 2:

[0044] Example 2 is based on Example 1:

[0045] like Figures 1 to 11 As shown, the lifting device 3 includes a lifting drive mechanism 31 and two lifting frames 32. The lifting frames 32 are arranged as a frame structure. The two lifting frames 32 are arranged opposite to each other. The two fork-picking devices are respectively arranged on the two lifting frames 32. The lifting drive mechanism 31 is connected to the two lifting frames 32 and can drive the two fork-picking devices and the two lifting frames 32 to rise and fall synchronously.

[0046] By providing two lifting mechanisms, the corresponding forking devices can be stably supported respectively, providing a prerequisite for the stable lifting of the mother-and-child pallets during the stacking process.

[0047] As an optional implementation, the lifting drive mechanism 31 includes a lifting power component 311 and two transmission chain components 312 .

[0048] The lifting power assembly 311 is an electric power assembly, including a motor and a transmission. The output end of the lifting power assembly 311 is connected to a driving shaft 3111 .

[0049] Two transmission chain assemblies 312 are arranged at both ends of the driving shaft 3111, and the transmission chain assembly 312 includes a lifting chain 3123 and a sprocket transmission assembly. The sprocket transmission assembly includes an input sprocket 3121 and a plurality of reversing sprockets 3122. The input sprocket 3121 is sleeved on the driving shaft 3111 and rotates synchronously with the driving shaft 3111. The reversing sprocket 3122 is rotatably arranged on the supporting device 1. The lifting chain 3123 bypasses the input sprocket 3121 and the reversing sprocket 3122. The first end of the lifting chain 3123 is connected to the bottom side of the lifting frame 32, and the second end of the lifting chain 3123 is connected to the top side of the lifting frame 32.

[0050] To further ensure the transmission effect, the lifting frame 32 is provided with a chain tensioner, the first end of the lifting chain 3123 is connected to the top of the chain tensioner through a first threaded connector, and the second end of the lifting chain 3123 is connected to the bottom side of the chain tensioner through a second threaded connector.

[0051] When stacking the plates, the lifting power assembly 311 is started, the driving shaft 3111 rotates, and the input sprocket 3121 rotates, thereby driving the lifting chain 3123 to move, and then pulling the corresponding lifting frame 32 to achieve its lifting action.

[0052] It adopts a chain lifting structure, which has the characteristics of stable lifting process, simple and compact structure, small space occupation, high transmission efficiency, stable process and strong adaptability.

[0053] To further improve the stability of the lifting process, reversing sprockets 3122 are provided on both sides of the fork-taking device, and the lifting chain 3123 has four traction points, corresponding to the left and right sides of the top of the lifting frame 32 and the left and right sides of the bottom of the lifting frame 32 respectively.

[0054] As an optional embodiment, the lifting device 3 includes a lifting guide mechanism 33, the lifting guide mechanism 33 includes a lifting guide rail 331 and a lifting slider 332, the lifting guide rail 331 is vertically arranged on the supporting device 1; the lifting slider 332 is fixedly connected to the lifting frame 32, the lifting slider 332 is arranged on the lifting guide rail 331, and slides with the lifting guide rail 331.

[0055] The lifting guide rail 331 and the lifting slider 332 cooperate with each other to effectively limit the lifting trajectory of the lifting frame 32 .

[0056] In order to further improve the stability of the lifting frame 32 during the lifting process, lifting guide rails 331 are provided on both sides of the fork-taking device on the support device 1, and a plurality of lifting sliders 332 are fixedly connected to both sides of the fork-taking device.

[0057] As an optional implementation, the lifting device 3 includes a lifting position sensing mechanism 34 , which is disposed on the supporting device 1 . The lifting position sensing mechanism 34 can accurately detect the lifting position of the lifting frame 32 .

[0058] The lifting position sensing mechanism 34 includes a travel switch 341 and a photoelectric switch assembly. The travel switch 341 is fixedly arranged on the supporting device 1. There are two travel switches 341, which are respectively located above and below the photoelectric switch assembly and are used to limit the lifting position of the lifting frame 32. The photoelectric switch assembly includes a U-shaped photoelectric switch 342 and a light cutting plate 343. The U-shaped photoelectric switch 342 is fixedly arranged on the supporting device 1. The light cutting plate 343 is fixedly arranged on the lifting frame 32. During the lifting process of the lifting frame 32, the light cutting plate 343 can pass through the U-shaped photoelectric switch 342.

[0059] As an optional embodiment, the fork-taking crank power mechanism includes a crank drive assembly and a horizontal guide assembly, and the horizontal guide assembly is used for guiding the movement of the fork plate 42.

[0060] The horizontal guide assembly includes a fork guide rail 411 and a fork slider 412 that are slidably matched. The fork guide rail 411 is fixedly set on the corresponding lifting frame 32, and the fork slider 412 is connected to the fork plate 42; the crank drive assembly is transmission-connected to the fork plate 42, and can drive the fork plate 42 and the fork slider 412 to synchronously extend and retract along the fork guide rail 411.

[0061] The fork guide rail 411 and the fork slide block 412 cooperate with each other to effectively limit the moving track of the fork plate 42, so that it can stably move in the horizontal direction, and the telescopic action process is smooth and reliable.

[0062] The fork plate 42 includes two fork arms arranged in parallel, the fork-taking slider 412 is fixedly arranged on the bottom side of the corresponding fork arm, and the fork-taking guide rail 411 is located below the corresponding fork arm.

[0063] In order to further improve the stability of the fork plate 42 during movement and its bearing strength, each forking guide rail 411 is correspondingly provided with a plurality of forking slide blocks 412 .

[0064] As an optional implementation, the crank drive assembly includes a fork-taking power assembly 413 , a crank 414 and a rolling element 415 , and a guide groove 421 is provided on the fork plate 42 .

[0065] The fork-taking power assembly 413 adopts an electric power assembly, including a motor and a transmission. The output end of the fork-taking power assembly 413 is fixedly connected to the first end of the crank 414, and the fork-taking power assembly 413 can drive the crank 414 to rotate.

[0066] The rolling element 415 can rotate on the second end of the crank 414. The rolling element 415 is located in the guide groove 421 and rolls with the guide groove 421. It uses rolling friction and has smaller friction resistance, making the relative movement smoother. Optionally, the rolling element 415 is set as a rolling wheel, a rolling shaft, a bearing, etc.

[0067] As an optional embodiment, the stacking device 4 further includes a telescopic position sensing mechanism 43 , which is disposed on the lifting frame 32 and is used for detecting the telescopic position of the fork plate 42 .

[0068] The telescopic position sensing mechanism 43 includes a sensing block 432 and an inductive proximity sensor 431. The sensing block 432 is arranged on the fork plate 42 and moves synchronously with the fork plate 42. The inductive proximity sensor 431 is arranged on the lifting frame 32. By detecting the position of the sensing block 432, the telescopic position of the fork plate 42 is sensed.

[0069] Specifically, the number of the sensing blocks 432 and the inductive proximity sensors 431 is set to two groups, corresponding to the extended position detection and the retracted return position detection respectively.

[0070] As an optional implementation, the conveying device 2 includes a conveying support 21 , a conveying drive mechanism 22 and a conveying roller mechanism 23 .

[0071] The conveying bracket 21 is fixedly disposed on the supporting device 1 and is located below the stacking device 4 , and is used for installing and supporting the conveying driving mechanism 22 and the conveying roller mechanism 23 .

[0072] The conveying drive mechanism 22 and the conveying roller mechanism 23 are both arranged on the conveying bracket 21. The conveying roller mechanism 23 includes a plurality of unit conveying rollers 231 arranged in parallel. The conveying drive mechanism 22 includes a conveying power assembly 221 and a chain transmission assembly. The conveying power assembly 221 adopts an electric power assembly, including a motor and a transmission. The chain transmission assembly includes a plurality of transmission chains and a plurality of transmission sprockets. The output end of the conveying power assembly 221 is connected to all the unit conveying rollers 231 through the chain transmission assembly. The chain transmission assembly is simple in structure, stable in action process, and has a stable transmission ratio, which can effectively ensure the conveying effect.

[0073] As an optional implementation, the supporting device 1 includes a base frame 11 , a stand frame 12 and a supporting frame 13 .

[0074] The number of the vertical frames 12 is set to two, and the two vertical frames 12 are relatively arranged on both sides of the base frame 11 and fixedly connected to the base frame 11. The two fork-taking devices can be lifted and lowered on the two vertical frames 12 respectively through corresponding lifting frames 32.

[0075] An adjustable foot 14 is provided on the bottom side of the stand 12. The adjustable foot 14 includes a support plate, a foot base plate located below the support plate, and a threaded connection assembly. The threaded connection assembly includes a stud and a nut. The stud is fixedly disposed on the foot base plate, and the nut is threadedly connected to the stud for positioning the support plate.

[0076] The support frame 13 is disposed on the base frame 11 and is located between the two upright frames 12 . The conveying bracket 21 is fixedly disposed on the support frame 13 .

[0077] In the description of the present application, it should be understood that the terms "upper", "lower", "inside", "outside", "top", "bottom", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0079] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0080] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A tray stacking machine, characterized in that: It includes a supporting device, a conveying device, a lifting device and a stacking device, wherein: The conveying device is arranged on the supporting device, and is used for sequentially and alternately conveying the loaded sub-pallets and the empty mother pallets; The lifting device is arranged on the supporting device and connected to the stacking device, and can drive the stacking device to rise and fall; The stacking device comprises two forking devices arranged opposite to each other in the horizontal direction, the forking device comprises a forking crank driving mechanism and a fork plate connected to the forking crank driving mechanism, and the forking crank driving mechanism can drive the fork plate to extend and retract.

2. The tray stacking machine according to claim 1, characterized in that: The lifting device comprises a lifting drive mechanism and two lifting frames arranged opposite to each other, wherein: The two lifting frames are arranged opposite to each other, the two forking devices are arranged on the two lifting frames respectively, and the lifting drive mechanism is connected to the two lifting frames and can drive the two lifting frames to rise and fall synchronously.

3. The tray stacking machine according to claim 2, characterized in that: The lifting drive mechanism includes a lifting power assembly and two transmission chain assemblies, and the transmission chain assembly includes a lifting chain and a sprocket transmission assembly, wherein: The two lifting chains are connected to the lifting power assembly through the corresponding sprocket transmission assembly; The two ends of the lifting chain are respectively connected to the top side and the bottom side of the corresponding lifting frame.

4. The tray stacking machine according to claim 2, characterized in that: The lifting device comprises a lifting guide mechanism, and the lifting guide mechanism comprises a lifting guide rail and a lifting slider, wherein: The lifting guide rail is vertically arranged on the supporting device; The lifting slide block is fixedly connected to the lifting frame, and the lifting slide block is arranged on the lifting guide rail and slidingly matched with the lifting guide rail.

5. The tray stacking machine according to claim 1, characterized in that: The lifting device comprises a lifting position sensing mechanism, which is arranged on the supporting device and is used for detecting the lifting position of the lifting frame.

6. The tray stacking machine according to claim 2, characterized in that: The fork-taking crank power mechanism comprises a crank drive assembly and a horizontal guide assembly, wherein: The horizontal guide assembly includes a fork guide rail and a fork slider that are slidably matched, the fork guide rail is fixedly arranged on the corresponding lifting frame, and the fork slider is connected and arranged on the fork plate; The crank drive assembly is transmission-connected to the fork plate, and can drive the fork plate and the fork-taking sliding block to synchronously extend and retract along the fork-taking guide rail.

7. The tray stacking machine according to claim 6, characterized in that: The crank drive assembly includes a fork-taking power assembly, a crank and a rolling element, and a guide groove is provided on the fork plate, wherein: The fork-taking power assembly is connected to the crank and can drive the crank to rotate; The rolling element can rotate on the crank, and the rolling element is located in the guide groove and is in rolling cooperation with the guide groove.

8. The tray stacking machine according to claim 6, characterized in that: The stacking device further comprises a telescopic position sensing mechanism, which is arranged on the lifting frame and is used for detecting the telescopic position of the fork plate.

9. The tray stacking machine according to claim 1, characterized in that: The conveying device comprises a conveying support, a conveying driving mechanism and a conveying roller mechanism, wherein: The conveying bracket is fixedly arranged on the supporting device and is located below the stacking device; The conveying drive mechanism and the conveying roller mechanism are both arranged on the conveying bracket, and the conveying roller mechanism comprises a plurality of unit conveying rollers arranged in parallel, and all the unit conveying rollers are connected to the conveying drive mechanism.

10. The tray stacking machine according to claim 1, characterized in that: The supporting device comprises a base frame, a stand frame and a supporting frame, wherein: The number of the vertical frames is set to two, the two vertical frames are arranged oppositely on both sides of the bottom frame, the two fork-taking devices are respectively arranged on the two vertical frames in a liftable manner, and the bottom side of the vertical frames is provided with adjustable feet; The support frame is arranged on the base frame and is located between the two upright frames, and the conveying device is arranged on the support frame.

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