Deep-grain walnut floating extrusion shell breaking system based on laser precracking

Abstract

The invention belongs to the technical field of forest fruit processing, and provides a deep-grain walnut floating extrusion shell breaking system based on laser prefabrication cracks, which comprises a crack prefabrication unit, a chain transmission assembly, laser heads arranged on two sides close to the feeding end of the chain transmission assembly, and a laser-prefabrication unit arranged in a staggered manner along the conveying direction of the chain transmission assembly, the heights of the two laser heads can be vertically adjusted; the extrusion shell breaking unit comprises a roller support, a roller is rotationally connected to the roller support, a plurality of lower extrusion assemblies are arranged on the side wall of the roller at equal intervals, a lower pressing assembly is arranged at the top of the roller support, a plurality of spring seats are arranged at the bottom of the lower pressing assembly along the axis of the roller, and floating extrusion assemblies are arranged at the bottoms of the spring seats correspondingly. And the floating extrusion assembly and the lower extrusion assembly are used for extruding walnuts to break shells. Cracks can be accurately prefabricated on the surfaces of walnuts, the walnuts are effectively extruded to break shells, the kernel breaking rate during walnut shell breaking is effectively reduced, and the high kernel exposure rate is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of forestry and fruit processing, and in particular relates to a deep-grained walnut floating extrusion shell breaking system based on laser prefabricated cracks. Background Art

[0002] Walnut is one of the most popular nuts with high nutritional value. However, the walnut shell is hard and difficult to peel. The traditional manual shelling method is inefficient and easy to damage the walnut kernel. In particular, the deep-grained walnuts in Yunnan are mainly cultivated in Yangbi walnut and Santai walnut varieties. Their shells have deep textures, irregular shapes, and brittle walnut kernels. Although the existing mechanical shelling devices have improved the shelling efficiency to a certain extent, there are still problems such as incomplete shelling, high kernel breakage rate, and low kernel exposure rate. Summary of the invention

[0003] The purpose of the present invention is to provide a deep-grained walnut floating extrusion shell breaking system based on laser pre-cracks to solve the above-mentioned problems, so as to achieve the purpose of accurately pre-forming cracks on the walnut surface and effectively extruding the walnut to break the shell, reducing the broken kernel rate and increasing the exposed kernel rate.

[0004] To achieve the above object, the present invention provides the following solution: a deep-grained walnut floating extrusion shelling system based on laser prefabricated cracks, comprising:

[0005] A crack prefabrication unit comprises a chain transmission component, the chain transmission component is used to convey walnuts, laser heads are respectively arranged on both sides close to the feeding end of the chain transmission component, two groups of laser heads are staggered along the conveying direction of the chain transmission component, the height of the two laser heads can be adjusted vertically, and the laser heads are used to prefabricate cracks on the surface of the walnuts;

[0006] The extrusion shell breaking unit includes a roller bracket, on which a roller is rotatably connected via a driving member, a plurality of lower extrusion assemblies are evenly spaced on the side wall of the roller, a downward pressing assembly is arranged on the top of the roller bracket, a plurality of spring seats are arranged at the bottom of the downward pressing assembly along the axis of the roller, and floating extrusion assemblies are respectively arranged at the bottom of the plurality of spring seats, the floating extrusion assembly and the lower extrusion assembly are used for extruding walnuts to break their shells, and the lower extrusion assembly is connected to the discharge end of the chain transmission assembly via an intermediate discharge assembly.

[0007] Preferably, it further comprises a cabinet, and the chain transmission assembly is arranged on the cabinet;

[0008] The chain transmission assembly includes a driving sprocket and a driven sprocket rotatably connected to the cabinet body, a conveyor chain is wound around the driving sprocket and the driven sprocket, and a plurality of walnut positioning molds are fixedly connected to the outer surface of the conveyor chain. The walnut positioning molds are used to make the walnuts move with the conveyor chain.

[0009] Preferably, two groups of laser tubes are further provided on the cabinet, the two laser tubes are respectively located on both sides of the conveyor chain, and the two laser tubes are arranged parallel to the conveyor chain, one end of the two groups of laser tubes are respectively fixedly connected to the two laser heads through fixed laser head plates, the laser tubes are fixedly connected to the cabinet through two groups of laser tube brackets, and an upper and lower sliding module is provided in the laser tube bracket, and the upper and lower sliding module is used to adjust the height and pitch angle of the laser tube.

[0010] Preferably, the lower extrusion assembly comprises a plurality of lower extrusion heads, which are fixedly connected to the side wall of the roller at intervals along the axis of the roller, and a groove is provided at one end of the lower extrusion head away from the roller, and the groove is used for placing walnuts.

[0011] Preferably, the floating extrusion assembly includes a spring, one end of which is fixedly connected to the bottom of the spring seat, and the other end of the spring is threadedly sleeved with an upper extrusion head, and a plurality of the upper extrusion heads are respectively arranged corresponding to a plurality of the lower extrusion heads.

[0012] Preferably, the pressing assembly includes a cylinder vertically fixedly connected to the top of the roller bracket, the telescopic end of the cylinder is fixedly connected to a connecting plate, the connecting plate is located between the cylinder and the roller, and a plurality of spring seats are fixedly connected to the bottom of the connecting plate.

[0013] Preferably, it also includes a loading component, which includes a first feed hopper, a bottom discharge port of the first feed hopper is connected to one end of a discharge guide rail, the other end of the discharge guide rail is arranged corresponding to the feed end of the conveyor chain, and a visual sensor is fixedly connected to the side wall of the discharge guide rail.

[0014] Preferably, a pneumatic brush is fixedly connected to the top of the cabinet, and the pneumatic brush is arranged between the discharge guide rail and the laser head, and the pneumatic brush is used for cleaning and positioning walnuts.

[0015] Preferably, the intermediate discharging assembly includes a second feed hopper, the top opening of the second feed hopper is arranged corresponding to the discharging end of the conveying chain, the bottom opening of the second feed hopper is connected to a plurality of U-shaped conveying rails, the U-shaped conveying rails are arranged at an angle, and the lower ends of the plurality of U-shaped conveying rails are respectively arranged corresponding to the plurality of lower extrusion heads.

[0016] Compared with the prior art, the present invention has the following advantages and technical effects: the main function of the chain transmission component is to transport the walnuts to the downward extrusion component; the main function of the two groups of laser heads is to preform cracks on both sides of the surface of the walnuts when the walnuts pass through the laser heads, so as to achieve the purpose of 360° full-circle circumferential preformed cracks; the main function of the roller is to drive a number of lower extrusion components to be connected with the middle discharging component in sequence, and to complete the compression and shelling of the walnuts preformed with cracks in sequence, so as to achieve continuous production; the main function of the lower pressure component is to drive the floating extrusion component to move in the direction of the lower extrusion component to achieve the extrusion of the walnuts; the main function of the floating extrusion component is to achieve the extrusion and shelling of the walnuts by moving in the direction of the lower extrusion component. On the whole, the present invention achieves the best shelling effect by preforming cracks through the laser sliding-extrusion shelling process for walnuts, and improves the shelling effect of walnuts, while effectively reducing the broken kernel rate in the production process and ensuring a high kernel exposure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 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.

[0018] Figure 1 It is a schematic diagram of the shell breaking system of the present invention;

[0019] Figure 2 It is a left view of the extrusion shell breaking unit of the present invention;

[0020] Figure 3 It is a front view of the lower extrusion assembly and the floating extrusion assembly of the present invention;

[0021] Figure 4 It is a schematic diagram of the roller of the present invention;

[0022] Figure 5 It is a left view of the crack prefabrication unit of the present invention;

[0023] Figure 6 A top view of a crack prefabrication unit of the present invention;

[0024] Figure 7 A top view of the feeding assembly of the present invention;

[0025] Figure 8 It is a left side view of the feeding assembly of the present invention;

[0026] Fig. 9 is a schematic diagram of a laser tube bracket of the present invention;

[0027] Among them, 1. First feed hopper; 2. Feed hopper frame; 3. Discharge guide rail; 4. Pneumatic brush; 5. Motor; 6. Driving sprocket; 7. Laser head; 8. Fixed laser head plate; 9. Stand; 10. Walnut positioning mold; 11. Laser tube cover; 12. Conveyor chain; 13. Chiller; 14. Driven sprocket; 15. Fixed sprocket frame; 16. Second feed hopper; 17. U-shaped conveyor track; 18. Second frame; 19. Cylinder; 20. Upper extrusion head; 21. Lower extrusion head; 22. Roller; 23. Roller bracket; 24. Partition; 25. Limit block; 26. Roller shaft; 27. Laser tube bracket; 28. Laser tube; 29. ​​Walnut; 30. Air compressor; 31. Cabinet; 32. Collection box; 33. Spring; 34. Visual sensor; 35. Push rod; 36. Auxiliary motor; 37. Spring seat; 38. Connecting plate; 39. Screw. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figure 1-Figure 9 The present invention provides a deep-grained walnut floating extrusion shelling system based on laser prefabricated cracks, comprising:

[0031] The crack prefabrication unit includes a chain transmission component, the chain transmission component is used to convey the walnuts 29, and laser heads 7 are respectively arranged on both sides near the feeding end of the chain transmission component. The two groups of laser heads 7 are staggered along the conveying direction of the chain transmission component. The heights of the two laser heads 7 can be adjusted vertically. The laser heads 7 are used to prefabricate cracks on the surface of the walnuts 29;

[0032] The extrusion shell breaking unit includes a roller bracket 23, on which a roller 22 is rotatably connected via a driving member, a plurality of lower extrusion assemblies are evenly spaced on the side wall of the roller 22, a downward pressing assembly is arranged on the top of the roller bracket 23, a plurality of spring seats 37 are arranged at the bottom of the downward pressing assembly along the axis of the roller 22, and floating extrusion assemblies are respectively arranged at the bottom of the plurality of spring seats 37, the floating extrusion assemblies and the lower extrusion assemblies are used for extruding the walnuts 29 to break their shells, and the lower extrusion assembly is connected to the discharge end of the chain transmission assembly via an intermediate discharge assembly.

[0033] The main function of the chain transmission component is to transport the walnut 29 to the downward extrusion component; the main function of the two groups of laser heads 7 is to preform cracks on both sides of the surface of the walnut 29 when the walnut 29 passes through the laser head 7, so as to achieve the purpose of 360° full-circle circumferential preformed cracks; the main function of the roller 22 is to drive a number of lower extrusion components to be connected with the middle discharging component in sequence, and to complete the compression and shelling of the walnut 29 preformed with cracks in sequence, so as to achieve continuous production; the main function of the lower pressing component is to drive the floating extrusion component to move in the direction of the lower extrusion component to achieve the extrusion of the walnut 29; the main function of the floating extrusion component is to achieve the extrusion and shelling of the walnut 29 by moving in the direction of the lower extrusion component. On the whole, the present invention achieves the best shelling effect by preforming cracks through the laser sliding-extrusion shelling process for walnuts, and improves the shelling effect of walnuts, while effectively reducing the broken kernel rate in the production process and ensuring a high kernel exposure rate.

[0034] A further optimized solution also includes a process control unit, which is used to control the operation of the chain transmission component, the laser head 7, the driving member and the pressing component.

[0035] A further optimized solution further includes a cabinet 31, on which the chain transmission assembly is disposed;

[0036] The chain transmission assembly includes a driving sprocket 6 and a driven sprocket 14 rotatably connected to the cabinet body 31, a conveyor chain 12 is wound around the driving sprocket 6 and the driven sprocket 14, and a plurality of walnut positioning molds 10 are fixedly connected to the outer surface of the conveyor chain 12. The walnut positioning molds 10 are used to make the walnuts 29 move with the conveyor chain 12.

[0037] like Figure 1 As shown, the main function of the walnut positioning mold 10 is to adjust and fix the position of the walnuts, realize batch positioning of the walnuts 29 on the conveyor chain 12, and ensure that the walnuts 29 do not move during the laser cutting process.

[0038] To further optimize the solution, the cabinet 31 is fixedly arranged at the production site through the stand 9.

[0039] Further optimization scheme, such as Figure 1 As shown, a motor 5 is fixedly connected to the cabinet 31, and the output shaft of the motor 5 is in driving connection with the driving sprocket 6. The driving sprocket 6 is driven to rotate by the motor 5, so that the upper part of the conveyor chain 12 conveys walnuts 29 to the middle discharging assembly.

[0040] According to a further optimized solution, the driving sprocket 6 and the driven sprocket 14 are rotatably connected to the cabinet 31 via a fixed sprocket frame 15 .

[0041] To further optimize the solution, two groups of laser tubes 28 are also provided on the cabinet 31. The two laser tubes 28 are respectively located on both sides of the conveyor chain 12, and the two laser tubes 28 are arranged parallel to the conveyor chain 12. One ends of the two groups of laser tubes 28 are respectively fixedly connected to the two laser heads 7 through fixed laser head plates 8. The laser tubes 28 are fixedly connected to the cabinet 31 through two groups of laser tube brackets 27. The laser tube brackets 27 are provided with upper and lower sliding modules, and the upper and lower sliding modules are used to adjust the height and pitch angle of the laser tube 28.

[0042] Further optimization scheme, such as Figure 1 and Figure 5 As shown, two groups of laser tube covers 11 are detachably connected to the cabinet 31. The two laser tube covers 11 mainly cover the two groups of laser tubes 28 and protect the laser tubes 28 during the production process.

[0043] like Fig. 9 As shown, the upper and lower sliding modules include a push rod 35 vertically slidably connected to the laser tube bracket 27 and an auxiliary motor 36 embedded in the laser tube bracket 27. The output end of the auxiliary motor 36 is coaxially fixedly connected with a screw rod 39. The top of the screw rod 39 passes through the bottom of the push rod 35 and is threadedly connected to the push rod 35.

[0044] like Figure 5 and Figure 6 As shown, the laser tube bracket 27 is respectively mounted on the front and rear ends of the laser tube 28. The operation of each auxiliary motor 36 is controlled by the process control unit, and the lifting and lowering of each push rod 35 can be controlled respectively, so as to change the height and pitch angle of the laser tube 28, so as to coordinate the cutting posture of the laser head 7 according to the size of the walnut, so that each laser head 7 can achieve precise offset pre-cracks.

[0045] To further optimize the solution, a water chiller 13 and an air compressor 30 are also provided. The water chiller 13 and the air compressor 30 are respectively connected to the laser tube 28. The water chiller 13 cools the laser tube 28, and the air compressor 30 provides carbon dioxide inert gas to the laser tube 28 during the cutting process to ensure the light output rate, cutting effect and normal operation of the laser cutting machine.

[0046] A further optimized solution is that the lower extrusion assembly includes a plurality of lower extrusion heads 21, which are fixedly connected to the side wall of the roller 22 at intervals along the axis of the roller 22, and a groove is provided at one end of the lower extrusion head 21 away from the roller 22, and the groove is used to place the walnut 29.

[0047] Further optimization scheme, such as Figure 4 As shown, two groups of limit blocks 25 are fixedly connected to the outer wall of the lower extrusion head 21 , and the two limit blocks 25 are symmetrically arranged about the axis of the lower extrusion head 21 .

[0048] A further optimized solution is that the floating extrusion assembly includes a spring 33, one end of the spring 33 is fixedly connected to the bottom of the spring seat 37, and the other end of the spring 33 is threadedly sleeved with an upper extrusion head 20, and a plurality of upper extrusion heads 20 are respectively arranged corresponding to a plurality of lower extrusion heads 21.

[0049] like Figure 3 As shown, by rotating the upper extrusion head 20, the upper extrusion head 20 can be moved up and down along the spring 33, thereby adjusting the distance between it and the spring seat 37, thereby achieving precise adjustment of the loading force, performing highly precise shelling operations on pre-cracked walnuts, generating stress concentration at the laser pre-cracks, and causing the walnut shells to crack evenly.

[0050] As a further optimization scheme, a claw-shaped structure is provided at the bottom of the upper extrusion head 20, and the claw-shaped structure can adaptively fit the surface of the walnut body.

[0051] The bottom of the upper extrusion head 20 is designed with protrusions or grooves matching the cracks of the walnuts to guide the extrusion force to act along the crack direction and reduce the kernel breakage rate.

[0052] The claw-shaped structure can be formed by using a limit block to be fixedly connected to the side wall of the upper extrusion head 20, and can specifically be a two-claw or three-claw structure.

[0053] A further optimized solution is that the pressing assembly includes a cylinder 19 vertically fixedly connected to the top of the roller bracket 23, the telescopic end of the cylinder 19 is fixedly connected to a connecting plate 38, the connecting plate 38 is located between the cylinder 19 and the roller 22, and a plurality of spring seats 37 are fixedly connected to the bottom of the connecting plate 38.

[0054] like Figure 3 and Figure 4 As shown, the cylinder 19 extends the telescopic rod, drives the upper extrusion heads 20 to descend through the connecting plate 38, and squeezes the walnuts in the lower extrusion heads 21 located on the top of the roller 22, so that the walnuts 29 are cracked, thereby breaking the shells of the walnuts 29.

[0055] According to a further optimized solution, the roller 22 is rotatably connected to the roller bracket 23 via a roller shaft 26 , and the driving member includes a driving motor (not shown in the figure), which is fixedly connected to the roller bracket 23 and is transmission-connected to the roller shaft 26 .

[0056] The driving motor can drive the roller 22 to rotate step by step according to the production rhythm to achieve continuous production.

[0057] A further optimization scheme also includes a loading assembly, which includes a first feed hopper 1, a bottom discharge port of the first feed hopper 1 is connected to one end of a discharge guide rail 3, the other end of the discharge guide rail 3 is arranged corresponding to the feed end of the conveyor chain 12, and a visual sensor 34 is fixedly connected to the side wall of the discharge guide rail 3.

[0058] To further optimize the solution, the first feed hopper 1 is fixed at the production site through the feed hopper frame 2.

[0059] The main function of the visual sensor 34 is to determine whether a walnut 29 passes through and determine the shape of the walnut 29, so that the process control system can adjust the supporting position of the laser tube 28 by the laser tube bracket 27 accordingly.

[0060] According to a further optimization scheme, a pneumatic brush 4 is fixedly connected to the top of the cabinet 31 . The pneumatic brush 4 is arranged between the discharge guide rail 3 and the laser head 7 . The pneumatic brush 4 is used for cleaning and positioning the walnuts 29 .

[0061] The pneumatic brush 4 is mainly used for positioning and cleaning walnuts. The brush head of the pneumatic brush 4 can place the walnuts in the walnut positioning mold 10 in an orderly and directional manner. The softness and adaptability of the brush head can easily handle the irregular shape of the walnuts and accurately guide them into the walnut positioning mold 10.

[0062] A further optimized solution is that the intermediate discharging assembly includes a second feed hopper 16, the top opening of the second feed hopper 16 is arranged corresponding to the discharging end of the conveying chain 12, the bottom opening of the second feed hopper 16 is connected to a plurality of U-shaped conveying rails 17, the U-shaped conveying rails 17 are arranged obliquely, and the lower ends of the plurality of U-shaped conveying rails 17 are respectively arranged corresponding to a plurality of lower extrusion heads 21.

[0063] To further optimize the solution, the second feed hopper 16 is fixed at the production site through the second frame 18 , and a partition plate 24 is also provided between the lower end of the U-shaped conveying track 17 and the lower extrusion head 21 .

[0064] Further optimizing scheme, the side of roller 22 away from U-shaped conveying track 17 is provided with collecting box 32. The main function of collecting box 32 is to collect the walnuts with broken shells that fall from roller 22.

[0065] The working process of this embodiment is as follows:

[0066] Walnuts are poured into the first feed hopper 1 in batches and arrive at the front end position of the discharge guide rail 3, triggering the visual sensor 34, and then the pneumatic brush 4 and the laser tube 28 are started, and the laser head 7 is coordinated according to the size of the walnuts to achieve accurate dislocation pre-cracks. The brush head of the pneumatic brush 4 cleans the walnuts in a rotating manner and ensures that they fall into the walnut positioning mold 10 in an orderly and directional manner. Subsequently, the walnuts 29 are driven by the conveyor chain 12, and the walnut shell is pre-cracked 360° around the circumference under the action of the laser head 7 to ensure the quality and distribution of the shell cracks. Subsequently, the walnuts 29 fall from the end of the conveyor chain 12 into the second feed hopper 16, and are accurately positioned by a number of U-shaped conveyor rails 17, so that a number of walnuts are accurately transported to the corresponding row of lower extrusion heads 21. As the roller 22 rotates step by step, the cylinder 19 drives the upper extrusion head 20 to descend through the connecting plate 38, and performs highly accurate shelling operation on the walnuts in the row of lower extrusion heads 21 at the top. Then, the roller 22 rotates, causing the upper and lower extrusion heads of the next group of extrusion devices to rotate to the meshing position, ready to receive and execute the next extrusion instruction, and at the same time, the shelled walnuts fall into the collection box 32.

[0067] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" 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 invention, 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 invention.

[0068] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A deep-grained walnut floating extrusion shelling system based on laser prefabricated cracks, characterized in that: include: A crack prefabrication unit comprises a chain transmission component, the chain transmission component is used to convey walnuts (29), laser heads (7) are respectively arranged on both sides close to the feeding end of the chain transmission component, two groups of laser heads (7) are staggered along the conveying direction of the chain transmission component, the heights of the two laser heads (7) can be adjusted vertically, and the laser heads (7) are used to prefabricate cracks on the surface of the walnuts (29); The extrusion shell breaking unit comprises a roller support (23), the roller support (23) is rotatably connected to a roller (22) via a driving member, a plurality of lower extrusion assemblies are arranged at equal intervals on the side wall of the roller (22), a downward pressing assembly is arranged on the top of the roller support (23), a plurality of spring seats (37) are arranged at the bottom of the downward pressing assembly along the axis of the roller (22), and floating extrusion assemblies are respectively arranged at the bottom of the plurality of spring seats (37), the floating extrusion assemblies and the lower extrusion assemblies are used for extruding walnuts (29) to break their shells, and the lower extrusion assembly is connected to the discharge end of the chain transmission assembly via an intermediate discharge assembly.

2. According to claim 1, a deep-grained walnut floating extrusion shelling system based on laser pre-cracks is characterized by: It also includes a cabinet (31), and the chain transmission assembly is arranged on the cabinet (31); The chain transmission assembly comprises a driving sprocket (6) and a driven sprocket (14) rotatably connected to the cabinet (31); a conveying chain (12) is wound between the driving sprocket (6) and the driven sprocket (14); a plurality of walnut positioning molds (10) are fixedly connected to the outer surface of the conveying chain (12); the walnut positioning molds (10) are used to enable the walnuts (29) to move along with the conveying chain (12).

3. The deep-grained walnut floating extrusion shelling system based on laser prefabricated cracks according to claim 2 is characterized by: Two groups of laser tubes (28) are also arranged on the cabinet (31). The two laser tubes (28) are respectively located on both sides of the conveyor chain (12), and the two laser tubes (28) are arranged parallel to the conveyor chain (12). One end of the two groups of laser tubes (28) is fixedly connected to the two laser heads (7) through a fixed laser head plate (8). The laser tubes (28) are fixedly connected to the cabinet (31) through two groups of laser tube brackets (27). An up-and-down sliding module is arranged in the laser tube bracket (27). The up-and-down sliding module is used to adjust the height and pitch angle of the laser tube (28).

4. The deep-grained walnut floating extrusion shelling system based on laser prefabricated cracks according to claim 2 is characterized by: The lower extrusion assembly comprises a plurality of lower extrusion heads (21), which are fixedly connected to the side wall of the roller (22) at intervals along the axis of the roller (22), and a groove is formed at one end of the lower extrusion head (21) away from the roller (22), and the groove is used to place the walnut (29).

5. The deep-grained walnut floating extrusion shelling system based on laser pre-cracks according to claim 4 is characterized by: The floating extrusion assembly comprises a spring (33), one end of the spring (33) is fixedly connected to the bottom of the spring seat (37), the other end of the spring (33) is threadedly sleeved with an upper extrusion head (20), and a plurality of the upper extrusion heads (20) are respectively arranged corresponding to a plurality of the lower extrusion heads (21).

6. The deep-grained walnut floating extrusion shelling system based on laser pre-cracks according to claim 5 is characterized by: The pressing assembly comprises a cylinder (19) vertically fixedly connected to the top of the roller bracket (23); the telescopic end of the cylinder (19) is fixedly connected to a connecting plate (38); the connecting plate (38) is located between the cylinder (19) and the roller (22); and a plurality of spring seats (37) are fixedly connected to the bottom of the connecting plate (38).

7. The deep-grained walnut floating extrusion shell breaking system based on laser pre-crack according to claim 2 is characterized by: It also includes a loading assembly, which includes a first feeding hopper (1), a bottom discharge port of the first feeding hopper (1) is connected to one end of a discharge guide rail (3), the other end of the discharge guide rail (3) is arranged corresponding to the feeding end of the conveying chain (12), and a visual sensor (34) is fixedly connected to the side wall of the discharge guide rail (3).

8. The deep-grained walnut floating extrusion shelling system based on laser pre-cracks according to claim 7 is characterized by: A pneumatic brush (4) is fixedly connected to the top of the cabinet (31), and the pneumatic brush (4) is arranged between the discharge guide rail (3) and the laser head (7). The pneumatic brush (4) is used for cleaning and positioning the walnuts (29).

9. The deep-grained walnut floating extrusion shelling system based on laser pre-cracks according to claim 4 is characterized by: The intermediate discharge assembly comprises a second feed hopper (16), the top opening of the second feed hopper (16) is arranged corresponding to the discharge end of the conveying chain (12), the bottom opening of the second feed hopper (16) is connected to a plurality of U-shaped conveying rails (17), the U-shaped conveying rails (17) are arranged obliquely, and the lower ends of the plurality of U-shaped conveying rails (17) are respectively arranged corresponding to the plurality of lower extrusion heads (21).

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