A walnut cracking tool for preventing damage to walnut kernels

Abstract

This utility model provides a walnut shelling tool to prevent damage to walnut kernels, relating to the field of walnut shelling tools. It includes: a conical sleeve, a connecting post connected to the front end of the conical sleeve, and a guide plate connected to the front end of the connecting post. A connecting rod assembly is connected to the upper and lower ends of the guide plate. The connecting rod assembly includes an active connecting rod, a hinge seat, and a driven connecting rod. A linkage plate is slidably engaged with the inner side of the active connecting rod, and a blade is slidably connected to the inner end of the driven connecting rod. The rear end of the blade is hinged to the front end of the guide plate. A positioning rod is connected to the front end of the linkage plate, and a positioning block is connected to the front end of the positioning rod. The positioning rod slides through the middle of the guide plate. An elastic element is provided between the linkage plate and the guide plate, and on the outer side of the positioning rod. This utility model improves shelling efficiency, increases mechanical structural strength, and prevents damage to the walnut kernels during the shelling process.

Description

Technical Field

[0001] This utility model relates to the field of walnut shelling tools, specifically to a walnut shelling tool that prevents damage to walnut kernels. Background Technology

[0002] Pecan shelling machines generally use an extrusion method. However, in actual use, it has been found that the simple extrusion method cannot effectively crack some pecans with hard shells, resulting in low shelling quality and requiring repeated shelling, which seriously affects the shelling efficiency. Therefore, it is necessary to improve the existing concave pure extrusion cutter head. A search revealed existing technology (publication number: CN204811897U), which describes "a secondary extrusion type shell-breaking cutter head for a walnut shell-breaking machine. The walnut shell-breaking machine is equipped with a gun rod and an extrusion rod for extrusion shell breaking. The gun rod is also equipped with a shell-breaking cutter head, which includes a conical sleeve, a connecting column, a guide plate, a cutter base, and a blade. The gun rod is inserted into the conical sleeve, and multiple connecting columns are provided at the other end of the conical sleeve. A circular guide plate is provided on the connecting column, and multiple cutter bases parallel to the axis of the gun rod and capable of reciprocating sliding are provided around the guide plate. The extended end of the cutter base is hinged to the waist of the blade. A conical spring is also provided between the blade and the cutter base, and a cutter base spring is provided between the cutter base and the guide plate. The cutter base spring is a cylindrical compression spring. The secondary extrusion type shell-breaking cutter head for a walnut shell-breaking machine provided by this utility model has a reasonable structural design, good shell-breaking quality, and high shell-breaking success rate, which greatly improves the processing efficiency of the shell-breaking machine."

[0003] Although the existing walnut shell-breaking blades achieve a secondary squeezing effect, in practical applications, both the blade and the blade holder apply pressure through springs. The elastic buffer generated during shell breaking does not have the strength to hard open the shell, resulting in slow efficiency. At the same time, the pointed cone can easily penetrate into the inside of the walnut while opening the shell, causing damage to the walnut kernel and thus affecting the quality of the walnut kernel after opening. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, a walnut shell-cracking knife that prevents damage to walnut kernels is provided to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, a walnut shell-cracking knife that prevents damage to walnut kernels is provided, comprising: a conical sleeve, a connecting post connected to the front end of the conical sleeve, and a guide plate connected to the front end of the connecting post; a linkage assembly connected to the upper and lower ends of the guide plate, the linkage assembly including an active linkage, a hinge seat, and a driven linkage; a linkage plate slidably engages with the inner side of the active linkage, and a blade slidably connects to the inner end of the driven linkage, with the rear end of the blade hinged to the front end of the guide plate; a positioning rod connected to the front end of the linkage plate, and a positioning block connected to the front end of the positioning rod; the positioning rod slidably passes through the middle of the guide plate; and an elastic element is provided between the linkage plate and the guide plate and on the outer side of the positioning rod.

[0006] Furthermore, the linkage plate has a guide hole inside, and the connecting column slides through the guide hole.

[0007] Furthermore, the outer end of the linkage plate is connected to a slider, and the slider has protruding locking pins on both sides.

[0008] Furthermore, the inner end face of the active connecting rod is provided with a sliding groove, and the inner wall of the sliding groove is provided with a limiting slot. At the same time, the slider and the locking pin are slidably connected in the sliding groove and the limiting slot, respectively.

[0009] Furthermore, the inner end of the driven link is connected to a horseshoe block, and the horseshoe block has a retaining groove.

[0010] Furthermore, the blade includes a back and a cutting edge, and limiting grooves are formed on both sides of the back, and the horseshoe block is slidably engaged in the limiting grooves.

[0011] Furthermore, the positioning block has an arc-shaped surface at its front end, and the inner wall of the arc-shaped surface has multiple conical teeth.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. In use, the positioning block and the outer squeezing rod are used to squeeze and fix the walnut. Then, the gun rod pushes the conical sleeve to move, which in turn moves the guide plate to one side of the walnut. Then, the walnut's reaction force pushes the positioning rod to stretch the elastic element to move backward, which in turn pushes the linkage plate to move backward. The outer end of the linkage plate is connected to the active linkage, which causes the active linkage to rotate around the hinge seat, which in turn drives the driven linkage to rotate. Then, the driven linkage is slidably connected to the blade, which pushes the blade to close inward, and then opens the walnut shell through the blade. Since the blade is directly driven by the mechanical linkage, it has the strength to open the shell and improves the shell opening efficiency.

[0014] 2. Through the connection between the positioning rod, linkage plate, connecting rod assembly and blade, the movement of the positioning rod is adapted to the closed state of the blade. At the same time, the conical teeth on the inner side of the positioning block are used to stably clamp the walnut. When the clamping force reaches a certain level, cracks will form on the surface of the walnut shell. At the same time, with the gradually closing blade, the walnut shell is opened, and damage to the walnut kernel is avoided. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of an embodiment of the present utility model.

[0016] Figure 2 This is an embodiment of the present utility model. Figure 1 Schematic diagram of the cross-sectional structure at point A in the middle.

[0017] Figure 3 This is a three-dimensional structural diagram of the connecting rod assembly according to an embodiment of the present utility model.

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the blade in an embodiment of the present utility model.

[0019] In the diagram: 1. Conical sleeve; 2. Linkage assembly; 21. Driving link; 211. Slide groove; 212. Limiting slot; 22. Hinge seat; 23. Driven link; 24. Horseshoe block; 241. Locking groove; 3. Blade; 31. Back of blade; 32. Blade edge; 4. Guide plate; 5. Positioning rod; 51. Positioning block; 6. Connecting column; 7. Linkage plate; 71. Slider; 72. Locking pin; 8. Elastic element. Detailed Implementation

[0020] Example 1

[0021] Reference Figures 1 to 4 As shown, this utility model provides a walnut shelling knife to prevent damage to walnut kernels, including: a conical sleeve 1, a connecting post 6 connected to the front end of the conical sleeve 1, and a guide plate 4 connected to the front end of the connecting post 6. A connecting rod assembly 2 is connected to the upper and lower ends of the guide plate 4, and the connecting rod assembly 2 includes an active connecting rod 21, a hinge seat 22, and a driven connecting rod 23. A linkage plate 7 is slidably engaged on the inner side of the active connecting rod 21, and a blade 3 is slidably connected to the inner end of the driven connecting rod 23. The rear end of the blade 3 is hinged to the front end of the guide plate 4. A positioning rod 5 is connected to the front end of the linkage plate 7, and a positioning block 51 is connected to the front end of the positioning rod 5. The front end of the positioning block 51 has an arc-shaped surface, and the inner wall of the arc-shaped surface has multiple conical teeth. The positioning rod 5 slides through the middle of the guide plate 4, and an elastic element 8 is provided between the linkage plate 7 and the guide plate 4 and on the outer side of the positioning rod 5.

[0022] Specifically, the rear side of the conical sleeve 1 is connected to a gun barrel, and a compression rod is provided on the front side of the blade 3. The roles of the gun barrel and the compression rod have been fully disclosed in the prior art documents.

[0023] It should be noted that the guide plate 4 can be designed as a circular structure, and the connecting rod assembly 2 and the blades 3 connected to it can be set in multiple sets to achieve the effect of multiple sets of blades 3 cracking the walnuts, thereby further improving the cracking efficiency.

[0024] Specifically, the elastic element 8 is designed as a tension spring structure, and both ends of the elastic element 8 are fixed to the guide plate 4 and the linkage plate 7 respectively. In the unused state, the tension spring is in a contracted state, and the blade 3 is in an unfolded state through the linkage assembly 2.

[0025] Specifically, by setting the arc-shaped surface structure and conical teeth of the positioning block 51, the walnut is fixed, and the length of the conical teeth does not exceed the front end face of the positioning block 51, thus avoiding piercing the walnut and damaging the kernel inside.

[0026] like Figures 1 to 4 In the middle, the linkage plate 7 has a guide hole inside, and the connecting column 6 slides through the guide hole. The outer end of the linkage plate 7 is connected to the slider 71, and the slider 71 has protruding locking pins 72 on both sides. The inner end face of the active connecting rod 21 has a sliding groove 211, and the inner wall of the sliding groove 211 has a limiting groove 212. At the same time, the slider 71 and the locking pin 72 are slidably connected in the sliding groove 211 and the limiting groove 212, respectively. The inner end of the driven connecting rod 23 is connected to the horseshoe block 24, and the horseshoe block 24 has a locking groove 241. The blade 3 includes a blade back 31 and a blade edge 32, and the two sides of the blade back 31 have limiting grooves, and the horseshoe block 24 is slidably locked in the limiting groove.

[0027] Specifically, the retaining groove 241 includes a retaining strip and a groove. The groove is engaged with the outer wall of the blade back 31, and the retaining strip is engaged with the limiting groove to achieve a sliding connection with the blade 3.

[0028] Specifically, by setting guide holes, the connecting column 6 can guide the movement of the linkage plate 7.

[0029] As another preferred embodiment, based on Embodiment 1, the cutting tool involved in this application is used in a walnut shelling device, and a dust removal device is set up nearby to suck up the debris and dust generated during the shelling process, thereby avoiding affecting the operation of the cutting tool.

[0030] In use, the positioning block and the outer squeezing rod are used to press and fix the walnut. Then, the gun rod pushes the conical sleeve to move, which in turn moves the guide plate to one side of the walnut. The walnut's reaction force pushes the positioning rod to stretch the elastic element backward, which in turn pushes the linkage plate backward. The outer end of the linkage plate is connected to the active linkage, which rotates around the hinge seat, causing the driven linkage to rotate. The driven linkage is then slidably connected to the blade, pushing the blade inward to close. The blade then opens the walnut shell. Because the blade is directly driven by the mechanical linkage, it has the strength to open the shell, improving the opening efficiency. The connection between the positioning rod, linkage plate, linkage assembly and blade makes the movement of the positioning rod match the closed state of the blade. At the same time, the conical teeth on the inner side of the positioning block stably clamp the walnut. When the clamping force reaches a certain level, cracks will form on the surface of the walnut shell. At the same time, the gradually closing blade achieves the effect of opening the walnut shell, avoiding damage to the walnut kernel.

[0031] This utility model of a walnut shelling knife that prevents damage to walnut kernels effectively solves the problems mentioned in the background technology. It achieves improved shelling efficiency and increased mechanical strength on the basis of existing walnut shelling knife technology that prevents damage to walnut kernels, and avoids damage to walnut kernels during the shelling process.

Claims

1. A walnut shelling knife to prevent damage to walnut kernels, comprising: A conical sleeve (1) is provided with a connecting post (6) at the front end of the conical sleeve (1) and a guide plate (4) at the front end of the connecting post (6). The guide plate (4) is characterized in that a connecting rod assembly (2) is connected to the upper and lower ends of the guide plate (4). The connecting rod assembly (2) includes an active connecting rod (21), a hinge seat (22), and a driven connecting rod (23). A linkage plate (7) is slidably engaged on the inner side of the active connecting rod (21). A blade (3) is slidably connected to the inner end of the driven connecting rod (23). The rear end of the blade (3) is hinged to the front end of the guide plate (4). A positioning rod (5) is connected to the front end of the linkage plate (7). A positioning block (51) is connected to the front end of the positioning rod (5). The positioning rod (5) slides through the middle of the guide plate (4). An elastic element (8) is provided between the linkage plate (7) and the guide plate (4) and on the outer side of the positioning rod (5).

2. A walnut shell-cracking knife for preventing damage to walnut kernels according to claim 1, characterized in that, The linkage plate (7) has a guide hole inside, and the connecting column (6) slides through the guide hole.

3. A walnut shell-cracking knife for preventing damage to walnut kernels according to claim 1, characterized in that, The outer end of the linkage plate (7) is connected to a slider (71), and the slider (71) has protruding locking pins (72) on both sides.

4. A walnut shell-cracking knife for preventing damage to walnut kernels according to claim 1, characterized in that, The inner end face of the active connecting rod (21) is provided with a sliding groove (211), and the inner wall of the sliding groove (211) is provided with a limiting slot (212). At the same time, the slider (71) and the locking pin (72) are slidably connected in the sliding groove (211) and the limiting slot (212) respectively.

5. A walnut shell-cracking knife for preventing damage to walnut kernels according to claim 1, characterized in that, The inner end of the driven link (23) is connected to a horseshoe block (24), and the horseshoe block (24) has a retaining groove (241).

6. A walnut shell-cracking knife for preventing damage to walnut kernels according to claim 1, characterized in that, The blade (3) includes a back (31) and a cutting edge (32), and a limiting groove is provided on both sides of the back (31), and the horseshoe block (24) is slidably engaged in the limiting groove.

7. A walnut shell-cracking knife for preventing damage to walnut kernels according to claim 1, characterized in that, The positioning block (51) has an arc-shaped surface at its front end, and the inner wall of the arc-shaped surface has multiple conical teeth.

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