Forward and reverse rotation cutter and chopper provided with forward and reverse rotation cutter

Abstract

The utility model relates to a forward and reverse rotation cutter and a chopping machine provided with the forward and reverse rotation cutter, and the forward and reverse rotation cutter comprises an upper cutter bar, a lower cutter bar, an upper cutter inner hole, a lower cutter inner hole and a lower cutter inner hole, the lower cutter bar is coaxial with the upper cutter bar and comprises a first bar section and a second bar section, and the first bar section is rotatably mounted in the upper cutter inner hole; the second rod section is integrally connected with the first rod section and is exposed out of the lower end of the upper cutter rod; the blades are mounted on the outer wall of the upper cutter bar and the outer wall of the lower cutter bar; the cutting edge of the blade installed on the outer wall of the upper cutter bar faces the first direction, the cutting edge of the blade installed on the outer wall of the lower cutter bar faces the second direction, and the second direction is opposite to the first direction. The forward and reverse rotation cutter can cut and stir food or materials from two different directions at the same time, so that the cutting efficiency is improved, and the crushing effect is better.

Description

Technical Field

[0001] The utility model relates to a cutter, in particular to a forward and reverse rotating cutter and a shredder equipped with the forward and reverse rotating cutter. Background Art

[0002] In a chopper, the blades rotate to cut and mix the food or materials, and finally complete the pulverization work. In some technologies, multiple sets of blades are installed in the chopper and mixer, and they rotate simultaneously to improve the efficiency of food pulverization. However, if multiple sets of blades rotate in the same direction with the central axis of the blade holder, the food will rotate in the same direction as the blades, and sometimes it will cause the food to be stratified, so that the food cannot be fully chopped.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] Aiming at the deficiencies of the prior art, the utility model discloses a forward and reverse rotating cutter and a shredder equipped with the forward and reverse rotating cutter.

[0005] The technical solutions adopted in the embodiments of the present utility model are as follows:

[0006] A forward and reverse rotating tool, characterized in that it includes: an upper tool rod, having an upper tool inner hole that passes through the upper tool rod in the axial direction; a lower tool rod, coaxial with the upper tool rod, including: a first rod segment, and rotatably installed in the upper tool inner hole; a second rod segment, integrally connected to the first rod segment and exposed at the lower end of the upper tool rod; a plurality of blades, installed on the outer wall of the upper tool rod and the outer wall of the lower tool rod; wherein the blade edge installed on the outer wall of the upper tool rod faces a first direction, and the blade edge installed on the outer wall of the lower tool rod faces a second direction, and the second direction is opposite to the first direction.

[0007] A further technical solution is that at least two blades are installed at different heights on the outer wall of the upper knife rod, and the blades are evenly arranged in the circumferential direction of the outer wall of the upper knife rod; at least two blades are installed at different heights on the outer wall of the lower knife rod, and the blades are evenly arranged in the circumferential direction of the outer wall of the lower knife rod.

[0008] A further technical solution is that the blade surface of the blade is perpendicular to the axial direction of the upper blade rod.

[0009] A further technical solution is that the projection of the blade on the plane where the blade surface is located is a curved shape, and the curvature of the blade edge is smaller than the curvature of the blade back.

[0010] A further technical solution is that the blade width of the blade gradually decreases from the fixed position of the blade to the tip of the blade.

[0011] Its further technical solution is that the forward and reverse rotating tool also includes: an upper knife connecting head, which is surrounded by gear teeth on the outer circumference and is arranged at the upper end of the outer wall of the upper knife rod; a lower knife connecting head, including: a mounting section, which is fixed to the upper end of the lower knife rod; a driving section, which is surrounded by gear teeth on the outer circumference, is connected to the mounting section and extends upward from the inner hole of the upper knife.

[0012] A further technical solution is that a first sleeve is arranged between the inner hole of the upper cutter and the mounting section.

[0013] A further technical solution is that a gap is left between the outer wall of the first rod segment and the inner wall of the inner hole of the upper knife.

[0014] A further technical solution is that the diameter of the first rod segment is smaller than the diameter of the second rod segment; and the diameter of the second rod segment is the same as the diameter of the lower end of the upper knife rod.

[0015] A shredder equipped with a forward and reverse rotating cutter as described in any of the above items, the shredder also includes a forward and reverse rotating transmission device; the forward and reverse rotating transmission device includes a first connecting hole for outputting a first direction torque and a second connecting hole for outputting a second direction torque; the upper cutter rod is fixed to the first connecting hole through an upper cutter connecting head; the lower cutter rod is fixed to the second connecting hole through a lower cutter connecting head.

[0016] The beneficial effects of the embodiments of the utility model are as follows:

[0017] 1. In the tool assembly disclosed in the embodiment of the utility model, the upper knife assembly and the lower knife assembly are assembled as one, and the two can rotate in opposite directions at the same time. The upper knife connector is used to connect to an external transmission device to drive the upper knife connector to rotate, drive the upper knife rod to rotate, and then the upper knife blade rotates along with the upper knife rod; the lower knife connector is also used to connect to an external transmission device, and also transmits power to the lower knife rod. The rotation of the lower knife rod drives the lower blade to rotate. The upper knife connector and the lower knife connector can be connected to transmission structures with different steering directions respectively, so as to realize differential reverse rotation of the upper knife and the lower knife, thereby improving the chopping efficiency.

[0018] 2. The layered installation structure of the blade disclosed in the embodiment of the utility model enables the blade to cut materials or ingredients from multiple heights and multiple levels at the same time, thereby improving the chopping efficiency and increasing the uniformity of chopping. If the curvature of the blade edge is smaller than the curvature of the blade back, when the blade rod rotates in the direction where the blade is located, the blade can contact the food or material to be chopped to the greatest extent, that is, the contact area between the blade and the food is increased.

[0019] 3. The upper knife assembly and the lower knife assembly disclosed in the embodiment of the utility model adopt a coaxial nested structure installed together, so that the possibility of eccentric shaking when the forward and reverse rotating knives rotate in opposite directions is reduced.

[0020] 4. The shredder equipped with forward and reverse rotating knives disclosed in the utility model can cut and stir food or materials from different directions at the same time, so that the cutting efficiency is improved and the crushing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the forward and reverse rotating tool in the embodiment of the utility model.

[0022] Figure 2 It is a structural schematic diagram of the forward and reverse turning tool in the embodiment of the utility model from another angle.

[0023] Figure 3 yes Figure 1 Cross-sectional view of .

[0024] Figure 4 It is a schematic diagram of the upper knife assembly in the embodiment of the utility model.

[0025] Figure 5 It is a schematic diagram of the lower knife assembly in the embodiment of the utility model.

[0026] Figure 6 It is a schematic diagram of the forward and reverse transmission device in the embodiment of the utility model.

[0027] In the figure: 1. upper knife assembly; 11. upper knife rod; 12. upper blade; 121. knife back; 122. blade; 13. upper knife connector; 14. inner hole of upper knife; 2. lower knife assembly; 21. lower knife rod; 211. first rod segment; 212. second rod segment; 22. lower blade; 23. lower knife connector; 231. drive segment; 232. mounting segment; 24. platform; 3. first shaft sleeve; 4. second shaft sleeve; 5. planetary reversal mechanism; 51. center wheel; 52. first planetary gear; 53. lower planetary carrier; 54. driving tooth; 55. first connecting hole; 6. planetary transmission mechanism; 61. second planetary gear; 62. planetary connecting sleeve; 63. second connecting hole. DETAILED DESCRIPTION

[0028] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0029] In order to make the purpose, technical scheme and advantages of the utility model clearer, the device proposed in the utility model is further described in detail below in combination with the accompanying drawings and specific implementation methods. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.

[0030] Figure 1 It is a schematic diagram of the structure of the forward and reverse rotating tool in the embodiment of the utility model. Figure 2 2 is a schematic diagram of the structure of the forward and reverse cutting tool in another embodiment of the present invention from another angle. Figure 1 , Figure 2 As shown, the forward and reverse tool comprises an upper knife assembly 1 and a lower knife assembly 2. The upper knife assembly 1 comprises an upper knife bar 11 and an upper blade 12 mounted on the outer wall of the upper knife bar 11. The lower knife assembly 2 comprises a lower knife bar 21 and a lower blade 22 mounted on the outer wall of the lower knife bar 21.

[0031] Figure 3 yes Figure 1 Cross-sectional view of . Figure 4 Schematic diagram of the upper knife assembly in the embodiment of the utility model. Figure 3 , Figure 4 The upper knife rod 11 has an upper knife inner hole 14 that penetrates the upper knife rod 11 in the axial direction. Figure 5 Schematic diagram of the lower knife assembly in the embodiment of the utility model. Figure 5 As shown, the lower blade bar 21 includes a first rod segment 211 and a second rod segment 212 integrally connected to the first rod segment 211. In an optional embodiment, the first rod segment 211 and the second rod segment 212 can also be integrally formed to make the whole stronger. The first rod segment 211 is inserted from the upper blade inner hole 14 and rotatably installed in the upper blade inner hole 14. The second rod segment 212 is exposed at the lower end of the upper blade bar 11. The lower blade 22 is installed on the outer wall of the second rod segment 212. A gap is left between the outer wall of the first rod segment 211 and the inner wall of the upper blade inner hole 14 to avoid friction and collision when the upper blade bar 11 and the lower blade bar 21 rotate, thereby increasing the service life of the tool.

[0032] Preferably, the diameter of the first rod segment 211 is smaller than the diameter of the second rod segment 212, and a platform 24 is formed at the connection position with the first rod segment 211 above the second rod end 212. The diameter of the second rod segment 212 is the same as the diameter of the lower end of the upper tool rod 11. When the upper tool rod 11 and the lower tool rod 21 are assembled together, the lower end of the upper tool rod 11 is aligned with the platform 24 and is spliced ​​into a whole with the second rod segment 212 exposed at the lower end of the upper tool rod 11, thereby reducing the installation volume of the entire tool and making the exterior of the tool more neat and beautiful.

[0033] Furthermore, a second shaft sleeve 4 is installed at the lower end of the lower blade rod 21, which can be used to install other structures, such as a stirring structure.

[0034] In this embodiment, two upper blades 12 are installed at different heights of the outer wall of the upper blade rod 11, wherein the first upper blade 12 is close to the bottom end of the upper blade rod 11, and the second upper blade 12 is at an appropriate distance from the first upper blade 12 at a higher position. The upper blades 12 are evenly spaced in the circumferential direction of the outer wall of the upper blade rod 11. In this embodiment, there are two upper blades 12, that is, they are arranged on opposite sides of the upper blade rod 11 in a direction approximately in a straight line. Two lower blades 22 are installed at different heights of the outer wall of the lower blade rod 21, and the lower blades 22 are evenly spaced in the circumferential direction of the outer wall of the lower blade rod 21, and are arranged on opposite sides of the lower blade rod 21 in a direction approximately in a straight line. Such an installation method can enable the blades to cut materials or ingredients from multiple heights and multiple levels at the same time, improve the chopping efficiency, and increase the uniformity of chopping. In other embodiments, the number of upper blades 12 or lower blades 22 can also be adjusted as needed.

[0035] In this embodiment, the blade surface of the upper blade 12 is perpendicular to the axial direction of the upper blade rod 11, and the blade surface of the lower blade 22 is perpendicular to the axial direction of the lower blade rod 21. When the upper blade rod 11 and the lower blade rod 21 rotate, the upper blade 12 and the lower blade 22 cut the food horizontally during the rotation process, and output the maximum cutting force in the cutting direction to chop the food or material as much as possible.

[0036] like Figure 4 As shown, taking the upper blade 12 as an example, the projection of the upper blade 12 on the plane where the blade surface 123 is located is a curved shape, and the curvature of the blade edge 122 of the upper blade 12 is smaller than the curvature of the blade back 121. When the upper blade rod 11 rotates in the direction where the blade 122 is located, the blade 122 can contact the food or material to be chopped to the greatest extent, that is, the contact area between the blade 122 and the food is increased.

[0037] Furthermore, the width of the blade surface 123 gradually decreases from the fixed position of the upper blade 12 to the tip of the upper blade 12. Under the premise of not losing the contact degree between the blade edge 122 and the food, the area of ​​the upper blade 12 is reduced as much as possible, saving materials and making the overall structure of the knife as light as possible.

[0038] In this embodiment, the shape of the lower blade 22 is the same as that of the upper blade 12. However, after the lower blade bar 21 is installed into the upper blade bar 11, the blade direction of the lower blade 22 is opposite to that of the upper blade 12.

[0039] Since the lower cutter bar 21 can rotate relative to the upper cutter bar 11, and the bending directions of the lower blade 22 and the upper blade 12 are opposite, the forward and reverse rotating tool disclosed in this embodiment is suitable for being installed on a shredder with a forward and reverse rotating transmission device, so that the lower cutter bar 21 and the upper cutter bar 11 can rotate at the same time, and the rotation direction of the lower cutter bar 21 is opposite to that of the upper cutter bar 11, the blade direction of the lower blade 22 faces the rotation direction of the lower cutter bar 21, and the blade direction of the upper blade 12 faces the rotation direction of the upper cutter bar 11, then the cutter can cut and stir food or materials from two different directions at the same time, so that the cutting efficiency is improved and the crushing effect is better.

[0040] like Figure 1 to Figure 5 As shown, the forward and reverse tool also includes an upper knife connector 13 and a lower knife connector 23. The upper knife connector 13 is arranged at the upper end of the outer wall of the upper knife rod 11, and the outer circumference of the upper knife connector 13 is surrounded by gear teeth. The lower knife connector 23 includes a mounting section 232 and a driving section 231. The mounting section 232 is fixed to the upper end of the lower knife rod 21. The driving section 231 is integrally connected to the mounting section 232 and extends upward from the upper knife inner hole 14, and is exposed from the upper end of the upper knife inner hole 14. Gear teeth are also surrounded on the outer circumference of the driving section 231. A first sleeve 3 is arranged between the upper knife inner hole 14 and the mounting section 232, so that the upper knife rod 11 and the lower knife rod 21 can rotate smoothly. A gap is left between the outer wall of the first rod section 211 and the inner wall of the upper knife inner hole 14 to prevent friction and collision during rotation.

[0041] The upper knife connector 13 and the lower knife connector 23 are used to install the upper knife rod 11 and the lower knife rod 21 on the forward and reverse transmission device. The forward and reverse transmission device can simultaneously drive the upper knife connector 13 and the lower knife connector 23 to rotate in opposite directions, and finally drive the upper blade 12 and the lower blade 22 to rotate in opposite directions respectively, so as to chop food or materials more efficiently and fully.

[0042] Furthermore, the present embodiment also discloses a shredder equipped with a forward and reverse rotating cutter. The shredder includes a driving device and a container device, and a forward and reverse rotating transmission device is installed in the driving device. The container device is used to hold food or materials, and the forward and reverse rotating cutter extends into the container device. When the forward and reverse rotating transmission device drives the cutter to rotate, the cutter can shred the food or materials in the container device. The shape of the container device is not limited here and can be selected as needed.

[0043] The forward and reverse transmission device has been mentioned in some prior arts. In this embodiment, an optional implementation of the forward and reverse transmission device is also disclosed, which can simultaneously drive the upper knife bar 11 and the lower knife bar 21 to rotate in opposite directions, but the specific structure of the forward and reverse transmission device is not a limitation of the present utility model. Those skilled in the art can understand that other transmission devices using the same principle can also drive the forward and reverse knives, so that the upper knife bar 11 and the lower knife bar 21 rotate in different directions at the same time, achieving the technical effect of the lower blade 22 and the upper blade 12 chopping food or materials from two different directions at the same time.

[0044] Figure 6 Schematic diagram of the forward and reverse transmission device in the embodiment of the utility model. Figure 6 As shown, the forward and reverse transmission device includes a planetary reversing mechanism 5 and a planetary transmission mechanism 6. The planetary reversing mechanism 5 includes a central wheel 51 connected to the rotating mechanism 7, a first planetary wheel 52 meshing with the central wheel 51, and a lower planetary carrier 53 connected to the first planetary wheel 52. The rotating mechanism 7 is generally a motor. A driving tooth 54 is arranged on the outer side of the lower planetary carrier 53, and a first connecting hole 55 is provided on the lower planetary carrier 53. The planetary transmission mechanism 6 includes a second planetary wheel 61 meshing with the driving tooth 54 and a planetary connecting sleeve 62 meshing with the second planetary wheel 61. A second connecting hole 63 is provided on the planetary connecting sleeve 62. The second connecting hole 63 is coaxial with and penetrates the first connecting hole 55.

[0045] The lower knife connector 23 is fixed to the first connecting hole 55 after passing through the second connecting hole 63, and the upper knife connector 13 is fixed to the second connecting hole 64. The specific fixing method can be a method known in the art, such as a key connection. The first connecting hole 55 outputs a torque opposite to the torque direction of the rotating mechanism 7, and the second connecting hole 63 outputs a torque in the same direction as the torque of the rotating mechanism 1. The rotating mechanism 7 outputs a torque, and the torque is transmitted to the lower planetary carrier 53 along the center wheel 51 and the first planetary wheel 52. At this time, part of the torque is transmitted through the lower planetary carrier 53 through the first connecting hole 55 to output a reverse torque. The other part of the torque is transmitted to the planetary connecting sleeve 62 along the lower planetary carrier 53 and the second planetary wheel 61, and a positive torque is output through the second connecting hole 63 of the planetary connecting sleeve 62, so that the upper knife rod 11 can rotate forward and the lower knife rod 21 can rotate reversely.

[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A forward and reverse rotating tool, characterized in that: include: An upper cutter bar having an upper cutter inner hole penetrating the upper cutter bar in the axial direction; The lower cutter bar is coaxial with the upper cutter bar and comprises: The first rod section is rotatably mounted in the inner hole of the upper knife; A second rod segment, integrally connected to the first rod segment and exposed at the lower end of the upper knife rod; A plurality of blades are mounted on the outer wall of the upper blade bar and the outer wall of the lower blade bar; The blade edge of the blade installed on the outer wall of the upper blade rod faces a first direction, and the blade edge of the blade installed on the outer wall of the lower blade rod faces a second direction, and the second direction is opposite to the first direction.

2. The forward and reverse rotating tool according to claim 1, characterized in that: At least two blades are installed at different heights on the outer wall of the upper knife rod, and the blades are evenly arranged in the circumferential direction of the outer wall of the upper knife rod; at least two blades are installed at different heights on the outer wall of the lower knife rod, and the blades are evenly arranged in the circumferential direction of the outer wall of the lower knife rod.

3. The forward and reverse rotating tool according to claim 1, characterized in that: The blade surface of the blade is perpendicular to the axial direction of the upper blade rod.

4. The forward and reverse rotating tool according to claim 1, characterized in that: The projection of the blade on the plane where the blade face is located is a curved shape, and the curvature of the blade edge is smaller than the curvature of the blade back.

5. The forward and reverse rotating tool according to claim 1, characterized in that: The blade width of the blade gradually decreases from the fixed position of the blade to the blade tip of the blade.

6. The forward and reverse rotating tool according to claim 1, characterized in that: The forward and reverse tool further comprises: an upper tool connector, the outer circumference of which is surrounded by gear teeth and is arranged on the upper end of the outer wall of the upper tool rod; Lower knife connector, including: A mounting section, fixed to the upper end of the lower cutter bar; The driving section has gear teeth around its outer circumference, is connected to the mounting section and extends upward from the inner hole of the upper knife.

7. The forward and reverse rotating tool according to claim 6, characterized in that: A first sleeve is arranged between the inner hole of the upper cutter and the mounting section.

8. The forward and reverse rotating tool according to claim 6, characterized in that: A gap is left between the outer wall of the first rod segment and the inner wall of the inner hole of the upper knife.

9. The forward and reverse rotating tool according to claim 1, characterized in that: The diameter of the first rod segment is smaller than the diameter of the second rod segment; the diameter of the second rod segment is the same as the diameter of the lower end of the upper knife rod.

10. A shredder equipped with a forward and reverse rotating blade according to any one of claims 1 to 9, characterized in that: The shredder also includes a forward and reverse transmission device; the forward and reverse transmission device includes a first connecting hole for outputting a first direction torque and a second connecting hole for outputting a second direction torque; the upper knife rod is fixed to the first connecting hole through an upper knife connecting head; the lower knife rod is fixed to the second connecting hole through a lower knife connecting head.

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