Net piece capable of forming bidirectional limiting and axially floating and tool bit assembly

Abstract

The invention relates to a mesh capable of forming bidirectional limiting and axially floating and a tool bit assembly, which are characterized in that a limiting piece is arranged at the edge of at least one end of the two ends of the mesh, and the limiting piece enables one end of the mesh to be detachably connected and fixed with an outer shell; in the initial state, the limiting pieces can enable the meshes to form transverse limiting relative to the length direction of the outer shell and form axial upward limiting in the height direction of the outer shell. When external force acts on the mesh, the mesh and the limiting piece can axially and downwards float and move relative to the height direction of the outer shell, and when the external force disappears, the mesh and the limiting piece can synchronously and automatically reset. The mesh has the beneficial effects that the limiting pieces are additionally arranged, and compared with a traditional mode that the two ends of the mesh are fixed to the mesh installation base through the hot melting riveting technology, hot riveting welding fixing is reduced, the mesh assembling technology is optimized, the mesh assembling benefit can be remarkably improved, and the assembling cost is reduced.

Description

Technical Field

[0001] The invention relates to a hair trimming device, and more particularly to a mesh and a cutter head assembly which can form a two-way limit and can float axially, and is mainly used in the field of personal care tools such as shavers and hair trimmers. Background Art

[0002] The applicant applied for a patent on April 29, 2016, with the name: Razor head assembly, announcement number: CN205600776U. Figure 7 As shown, the existing mesh cover 31 is provided with a plurality of rivet holes on both side edges. During assembly, the rivet holes on both sides of the mesh cover 31 are positioned using positioning blocks 331 provided on both sides of the mesh cover mounting seat 33. Then, the mesh cover 31 and the mesh cover mounting seat 33 are fixedly connected as a whole by hot-melt welding or bonding. Finally, the mesh cover mounting seat 33 is connected and fixed to the cutter head cover 3.

[0003] The mesh cover 31 is fixed by the mesh cover mounting seat 33, and then the mesh cover mounting seat 33 is connected to the cutter head cover 3, although the installation firmness of the mesh cover 31 can be ensured. However, during assembly, the mesh cover 31 needs to be fixed to the mesh cover mounting seat 33 by hot riveting, and then the mesh cover mounting seat 33 is connected to the cutter head cover 3, which not only increases the production cost of the mesh cover mounting seat 33, but also increases the assembly process of the mesh cover 31, reducing the assembly efficiency of the mesh cover 31.

[0004] Secondly, the existing mesh cover 31 and the mesh cover mounting seat 33 are fixed by hot-melt riveting. When in use, the mesh cover 31 cannot slide downward when it is in contact with the skin and subjected to external force. The mesh cover 31 is also easily damaged under the support of the moving knife, which correspondingly reduces the service life of the mesh cover 31. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a mesh and a cutter head assembly that can form a two-way limit and can float axially. When the mesh is assembled, not only can the mesh mounting seat component be reduced, thus reducing the component cost, but also the limit plate can be used to make the mesh and the outer shell detachably connected and fixed to form horizontal limit and axial limit, thereby improving the installation firmness of the mesh and ensuring the hair trimming performance of the mesh. Moreover, when the mesh is subjected to external force, the mesh can also form an axial downward floating displacement along the outer shell, thus preventing the mesh from being broken by the knife due to the force, thereby extending the service life of the mesh and the hair trimming performance.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is to form a mesh with bidirectional limiting and axial floating properties, including an outer shell, which has four faces connected in sequence to form a hollow shape that is connected from top to bottom, and the two ends of the mesh are bent in the middle and connected to the outer shell to seal the upper opening of the outer shell; a limiting plate is installed at the edge of at least one end of the two ends of the mesh, and the limiting plate enables one end of the mesh to be detachably connected and fixed to the outer shell; in the initial state, the limiting plate can form a lateral limitation on the mesh relative to the length direction of the outer shell, and an axial upward limitation in the height direction of the outer shell; when external force acts on the mesh, the mesh and the limiting plate can form an axial downward floating displacement relative to the height direction of the outer shell, and the mesh and the limiting plate can automatically reset synchronously when the external force disappears.

[0007] Preferably, one end of the mesh is non-detachably connected and fixed to the inner wall of the outer shell, and a limit plate is installed at the edge of the other end, and the limit plate enables the mesh to be detachably connected and fixed to the outer shell.

[0008] Preferably, limiting plates are respectively installed at the edges of both ends of the mesh, and the two limiting plates enable the two ends of the mesh to be detachably connected and fixed to the inner side wall of the outer shell.

[0009] Preferably, at least one cross bar protruding from the inner wall and an insertion rod connected to the end of the cross bar are respectively provided on the inner walls of the two opposite side walls of the outer shell, the length of the cross bar is greater than or equal to the sum of the thickness of the limiting plate and the mesh, and the cross bar and the insertion rod are combined to form a hook shape; hook holes are respectively provided at the corresponding positions of the limiting plate and the mesh, and the insertion rod is inserted into the hook hole so that the mesh blocks the upper end opening of the outer shell and forms a detachable connection and fixation with the outer shell, and under the restriction of the cross bar and the insertion rod, the limiting plate and the mesh form a longitudinal limitation in the width direction relative to the outer shell and an axial upward limitation relative to the outer shell; under the action of external force, the limiting plate and the mesh can float downward along the axial direction of the insertion rod; and when the external force disappears, the limiting plate and the mesh can automatically reset.

[0010] Preferably, the mesh and the limiting plate are axially floated downward along the height direction of the outer shell under the action of external force, and the displacement distance is less than the length of the insertion rod.

[0011] Preferably, at least one limiting column protruding from the inner wall is provided on each of the inner walls of the two opposite side walls of the mesh, and limiting holes are provided at corresponding positions of the limiting plate and the mesh respectively, the width of the limiting hole matches the diameter of the limiting column, and the length thereof is greater than the diameter of the limiting column; each limiting column is inserted into the limiting hole to form a lateral limit on the mesh relative to the length direction of the outer shell, and under the action of external force, the mesh and the limiting plate can float downward along the axial direction of the limiting column.

[0012] Preferably, a plurality of mounting holes are respectively provided at the edges of both ends of the mesh, and a matching number of connecting columns are provided at corresponding positions of the limiting plate. The connecting columns are inserted into the mounting holes and protrude out of the mounting holes so that the mesh and the limiting plate can be detachably connected or fixedly connected.

[0013] Preferably, viewed from the width direction of the outer shell, the relative side walls of the outer shell gradually become smaller from bottom to top, and a plurality of avoidance grooves are provided on the inner walls of the side walls of the outer shell, and the ends of the connecting columns protruding from the mesh mounting holes are placed in the avoidance grooves.

[0014] On the basis of the above technical solution, the applicant also proposed a cutter head assembly, which includes the above-mentioned mesh that forms bidirectional limitation and can float axially.

[0015] The beneficial effect of the present invention is that a limit plate is installed at the edge of at least one of the two ends of the mesh, and the limit plate enables one end of the mesh to be detachably connected and fixed to the outer shell; compared with the traditional method of fixing both ends of the mesh to the mesh mounting seat by hot melt riveting, the addition of the limit plate reduces the hot riveting welding fixation, optimizes the assembly process of the mesh, and can significantly improve the assembly efficiency of the mesh and reduce the assembly cost; secondly, the traditional flexible mesh needs to use the mesh mounting seat to fix the mesh first, and then the mesh mounting seat is installed in the outer shell; while the use of the limit plate to directly connect the mesh to the outer shell correspondingly reduces the mesh mounting seat component, and the production cost can be significantly reduced, and the assembly structure of the mesh is simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural diagram of a mesh sheet that forms a two-way limit and can float up and down according to an embodiment of the present invention

[0017] Figure 2 A side view of the structure of a mesh sheet that forms a two-way limit and can float up and down according to an embodiment of the present invention

[0018] Figure 3 for Figure 2 Sectional structure diagram at AA

[0019] Figure 4 for Figure 3 Cross-sectional structure diagram at the middle BB

[0020] Figure 5 for Figure 3 Cross-sectional structural diagram at CC

[0021] Figure 6 This is a cross-sectional structural diagram of another assembly embodiment of the mesh and the outer shell in the embodiment of the present invention.

[0022] Figure 7 for Figure 5 Sectional structure diagram at DD

[0023] Figure 8 for Figure 5 3D structure diagram of the cross section at DD

[0024] Fig. 9 A three-dimensional assembly structure diagram of the mesh and the limiting plate in an embodiment of the present invention

[0025] Fig.10 The side view of the assembly structure of the mesh and the limiting plate in the embodiment of the present invention is shown in FIG.

[0026] Fig.11 The bottom perspective structural diagram of the outer shell in the embodiment of the present invention is

[0027] Fig.12 The bottom plan view of the outer shell in the embodiment of the present invention

[0028] Fig.13 A three-dimensional structural diagram of a limiting piece in an embodiment of the present invention DETAILED DESCRIPTION

[0029] The following is combined with Figures 1 to 13 The embodiments of the present invention are further described as follows:

[0030] The present invention is a mesh sheet that forms a two-way limit and axially floating, including an outer shell 1 connected to the body of a hair trimming tool (not shown in the figure), and the outer shell 1 has four surfaces connected in sequence to form a hollow shape that is connected from top to bottom. The mesh sheet 2 is bent in the middle and connected to the outer shell 1 at both ends to block the upper end opening of the outer shell 1. The mesh sheet 2 is a flexible sheet (thickness is generally less than 30 threads), and a plurality of hair inlet holes 21 for hair introduction are provided in the bent area of ​​the mesh sheet 2. The movable knife is always matched with the inner surface of the mesh sheet 2 to cut the hair under the support of the elastic member (not shown in the figure).

[0031] In order to prevent the mesh 2 from breaking or being damaged due to bending deformation when it contacts the skin and bears external force, a limit plate 3 is installed at the edge of at least one end of the two ends of the mesh 2, and the limit plate 3 makes one end of the mesh 2 detachably connected and fixed with the outer shell 1; the limit plate 3 is added, and when assembling, the limit plate 3 can drive one end of the mesh 2 to form a detachable connection and fixation with the outer shell 1. Compared with the traditional mesh 2, both ends are fixed with the mesh mounting seat by hot melt riveting process, at least one end of the two ends of the mesh 2 uses the limit plate 3 to form a detachable connection and fixation with the outer shell 1, which reduces the hot riveting welding fixation, optimizes the assembly process of the mesh 2, and can significantly improve the assembly efficiency of the mesh 2 and reduce the assembly cost. Secondly, the traditional flexible mesh 2 needs to fix the mesh 2 with the mesh mounting seat first, and then install the mesh mounting seat in the outer shell 1. The limit plate 3 is used to directly connect the mesh 2 with the outer shell 1, which correspondingly reduces the mesh mounting seat component, and the production cost can be significantly reduced, and the assembly structure of the mesh 2 is simpler.

[0032] During the hair trimming process, the mesh 2 needs to cooperate with the moving blade component arranged at the bottom of the mesh 2, and the moving blade component is driven by the driving component (not shown in the figure) to swing back and forth along the mesh 2. In order to prevent the mesh 2 from being disturbed during the reciprocating swing of the moving blade, causing the mesh 2 to be displaced and affecting the introduction and trimming of the hair. In the initial state, the limit plate 3 can form a lateral limit on the mesh 2 relative to the length direction of the outer shell 1, that is, the limit plate 3 can keep the mesh 2 and the outer shell 1 in a unified state relative to the length direction of the outer shell 1, and on the basis of ensuring the installation firmness of the mesh 2 and the outer shell 1, the lateral displacement of the mesh 2 on the outer shell 1 is avoided, thereby improving the hair introduction and hair trimming performance of the mesh 2. Secondly, under the action of the limiting plate 3, the mesh 2 can also be limited upward in the axial direction relative to the height direction of the outer shell 1, that is, the mesh 2 is limited by the limiting plate 3 to block the upper opening of the outer shell 1 and will not detach from the upper opening of the outer shell 1, thereby preventing the moving knife component from directly contacting the skin and cutting the user, thereby improving the safety of use during hair trimming.

[0033] When the hair trimming tool is used, the mesh 2 will be directly squeezed by the skin when the hand presses the hair trimming tool. At this time, the end of the mesh 2 on which the limit plate 3 is installed will float and displace axially downward along the height direction of the outer shell 1, so that the mesh 2 has a certain avoidance buffer space, thereby preventing the mesh 2 from bending and deforming after being stressed, resulting in breakage or damage, and improving the safety and service life of the mesh 2. When the mesh 2 is separated from the skin and the external force disappears, the mesh 2 and the limit plate 3 will automatically reset under the elastic support of the power component, ensuring the stability of the mesh 2 in continuous use.

[0034] In order to improve the installation firmness and assembly efficiency of the mesh 2 and the outer shell 1, as Figure 6 As shown, one end of the mesh 2 is connected and fixed to the inner wall of the outer shell 1 in an irremovable manner, and a limit plate 3 is installed at the edge of the other end, and the limit plate 3 enables the mesh 2 to be connected and fixed to the outer shell 1 in a removable manner. Among them, the irremovable connection and fixation refers to connecting and fixing one end of the mesh 2 to the inner wall of the outer shell 1 by bonding or hot-melt riveting, so as to improve the connection firmness between the mesh 2 and the outer shell 1; the other end of the mesh 2 is connected and fixed to the outer shell 1 in a removable manner under the action of the limit plate 3, and the removable connection and fixation refers to a hook connection. Compared with bonding or hot-melt riveting, the removable hook connection is easier to assemble, which can significantly improve the assembly efficiency of the mesh 2 and reduce the assembly cost.

[0035] Of course, in order to improve the overall assembly efficiency of the mesh 2, as Figure 4As shown, limit plates 3 can also be respectively provided at both ends of the mesh 2, and then the two limit plates 3 are respectively used to form a detachable connection and fixation with the outer shell 1, that is, both ends of the mesh 2 are detachably hooked and connected to the inner wall of the outer shell 1 through the limit plates 3, which reduces the more complicated process of bonding or hot-melt riveting, has higher assembly efficiency, and effectively reduces the assembly cost of the mesh 2.

[0036] To facilitate the rapid assembly of the mesh 2, at least one cross bar 11 protruding from the inner wall and an insertion rod 12 connected to the end of the cross bar 11 are respectively provided on the inner walls of the two opposite side walls of the outer shell 1, and the length of the cross bar 11 is greater than or equal to the sum of the thickness of the limiting plate 3 and the mesh 2, and the cross bar 11 and the insertion rod 12 are combined to form a hook shape; cross bars 11 and insertion rods 12 are respectively arranged on the inner walls of the two opposite side walls of the outer shell 1 to form a hook shape, and the length of the cross bar 11 is greater than or equal to the sum of the thickness of the mesh 2 and the limiting plate 3, so that the insertion rod 12 can be used to limit the limiting plate 3 and the mesh 2, prevent the mesh 2 and the limiting plate 3 from deviating toward the center of the width direction of the outer shell 1, prevent interference with the reciprocating swing of the moving knife component, and improve the working stability of hair trimming. The length of the cross bar 11 is preferably slightly larger than the sum of the thicknesses of the mesh 2 and the limiting plate 3, so as to facilitate the axial downward floating displacement of the mesh 2 and the limiting plate 3 while reducing the displacement of the mesh 2 and the limiting plate 3 toward the middle of the outer shell 1, thereby improving the working stability of the mesh 2.

[0037] In order to realize the rapid assembly connection between the mesh 2 and the outer shell 1, hook holes 4 are respectively provided at the corresponding positions of the limit plate 3 and the mesh 2, and the insertion rod 12 is inserted into the hook hole 4 so that the mesh 2 blocks the upper end opening of the outer shell 1 and forms a detachable connection and fixation with the outer shell 1. By providing the hook hole 4 on the mesh 2 and the limit plate 3, the hook hole 4 can be quickly sleeved on the outside of the insertion rod 12 during assembly so that the mesh 2 and the outer shell 1 can quickly form a detachable connection and fixation, while ensuring the connection stability between the mesh 2 and the outer shell 1, the assembly efficiency of the mesh 2 is improved, and the assembly cost is reduced to the greatest extent. In actual production, the hook hole 4 is a square hole, and its width is slightly larger than the width of the cross bar 11 and the insertion rod 12, while the length of the hook hole 4 is smaller than the length of the insertion rod 12, so as to prevent the mesh 2 and the limit plate 3 from being separated from the insertion rod 12 when the mesh 2 and the limit plate 3 float downward axially, thereby ensuring the connection stability between the mesh 2 and the outer shell 1.

[0038] Secondly, the mesh 2 and the outer shell 1 are assembled by hooking. When the hooking holes 4 in the mesh 2 and the limiting plate 3 are placed on the cross bar 11, the cross bar 11 can limit the limiting plate 3 and the mesh 2 axially upward, so that the mesh 2 always blocks the upper opening of the outer shell 1, preventing the moving knife component below the mesh 2 from directly contacting the skin and cutting the skin. Under the restriction of the insertion rod 12, the mesh 2 is subjected to external force and the limiting plate 3 is synchronously axially floating downward along the height direction of the outer shell 1. And, the mesh 2 and the limiting plate 3 are prevented from deviating toward the center of the width direction of the outer shell 1 and interfering with the reciprocating swing of the moving knife component. When the external force on the mesh 2 disappears, the mesh 2 and the limiting plate 3 can automatically reset under the elastic support force of the moving knife component.

[0039] In order to prevent the mesh 2 from being separated from the insertion rod 12 when the outer shell 1 is subjected to external force and floats downward in the axial direction of the height direction, the mesh 2 and the limiting plate 3 float downward in the axial direction of the height direction of the outer shell 1 under the action of external force. The displacement distance is less than the length of the insertion rod 12. By controlling the length of the insertion rod 12, the mesh 2 and the limiting plate 3 can be prevented from being separated from the insertion rod 12 when the mesh 2 and the limiting plate 3 float downward in the axial direction, thereby improving the connection reliability of the mesh 2 and the limiting plate 3 with the outer shell 1.

[0040] In order to prevent the mesh 2 from undergoing synchronous lateral displacement when the movable knife component swings back and forth along the mesh 2, at least one limiting column 5 protruding from the inner wall is provided on each of the inner walls of the two opposite side walls of the outer shell 1, and limiting holes 6 are provided at corresponding positions of the limiting plate 3 and the mesh 2 respectively. The width of the limiting hole 6 matches the diameter of the limiting column 5, and the length thereof is greater than the diameter of the limiting column 5; each limiting column 5 is inserted into the limiting hole 6 to form a lateral limit on the mesh 2 relative to the length direction of the outer shell 1, and under the action of external force, the mesh 2 and the limiting plate 3 can float downward along the axial direction of the limiting column 5. By setting a limiting column 5 on the outer shell 1, and setting a limiting hole 6 on the mesh 2 and the limiting plate 3, when the end of the mesh 2 and the limiting plate 3 are hooked and connected with the inner wall of the outer shell 1, the limiting column 5 is correspondingly inserted into the limiting hole 6. Under the restriction of the limiting hole 6, the mesh 2 and the limiting plate 3 form a lateral limit relative to the length direction of the outer shell 1, thereby preventing the mesh 2 and the limiting plate 3 from lateral displacement when the moving knife component swings back and forth, ensuring the hair trimming performance when the mesh 2 and the moving knife cooperate. When the mesh 2 contacts the skin and is subjected to external force and axially floats downward along the height direction of the outer shell 1, the limiting hole 6 can guide the limiting column 5 in the outer shell 1, ensuring the stability of the axial up and down floating of the mesh 2.

[0041] In order to improve the assembly efficiency of the mesh 2, a plurality of mounting holes 22 are respectively provided at the edges of both ends of the mesh 2, and a matching number of connecting posts 7 are provided at the corresponding positions of the limiting plates 3. The connecting posts 7 are inserted into the mounting holes 22 and protrude out of the mounting holes 22 so that the mesh 2 and the limiting plates 3 can be detachably connected; by providing the mounting holes 22 on the mesh 2 and the connecting posts 7 on the limiting plates 3, the connecting posts 7 are respectively inserted into the mounting holes 22 on the mesh 2 during assembly so that the limiting plates 3 and the mesh 2 can quickly form a detachable active connection; since the mesh 2 and the limiting plates 3 are hooked and connected to the outer shell 1, the connecting posts 7 will not be separated from the mounting holes 22 at the ends of the mesh 2 due to the restriction of the insertion rod 12. Therefore, the cooperation of the connecting posts 7 and the mounting holes 22 can greatly improve the assembly efficiency of the mesh 2. Of course, the end of the connecting column 7 can also be hot-melt riveted to form an irremovable fixed connection between the limiting plate 3 and the mesh 2, but due to the restriction of the plug rod 12, the connecting column 7 will not be separated from the mounting hole 22 on the mesh 2, and hot-melt riveting the connecting column 7 and the mounting hole 22 of the mesh 2 is basically a redundant assembly process. Therefore, the detachable active connection formed by the connecting column 7 and the mounting hole 22 is a preferred embodiment. In specific production, it can also be determined according to actual conditions or user requirements.

[0042] In order to improve the overall appearance of the hair trimming tool, the two opposite side walls of the outer shell 1 are gradually reduced from bottom to top when viewed from the width direction of the outer shell 1. When the outer shell 1 is assembled with the body of the hair trimming tool, the overall appearance of the hair trimming tool can be improved. In addition, a dust cover can be installed on the outer shell 1 to protect the mesh 2, thereby preventing the mesh 2 from being damaged by collision when the hair trimming tool is not in use, thereby extending the service life.

[0043] Since the two side walls of the outer shell 1 gradually become smaller from the bottom, in order to prevent interference caused by the axial up and down floating of the mesh 2 and the limit plate 3 due to the narrowing of the width, a plurality of avoidance grooves 8 are provided on the inner walls of the two side walls of the outer shell 1, and the ends of the connecting column 7 protruding outside the mounting hole 22 of the mesh 2 are placed in the avoidance grooves 8. By providing the avoidance grooves 8, material shrinkage can be avoided during injection molding of the outer shell 1 to improve the yield rate, and the two side walls of the outer shell 1 can be prevented from blocking the up and down floating of the mesh 2 and the limit plate 3, ensuring the smoothness of the up and down floating displacement of the mesh 2 and the limit plate 3. Secondly, the avoidance grooves 8 can also play a limiting and guiding role on the connecting column 7, further improving the working stability of the mesh 2 and the limit plate 3.

[0044] On the basis of the above technical solution, the applicant also proposed a cutter head assembly, which includes the above-mentioned mesh that forms bidirectional limitation and can float axially.

[0045] The above embodiments should not be regarded as limiting the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. Form a mesh with two-way limit and axial floating, characterized by The invention comprises an outer shell (1), wherein the outer shell (1) has four surfaces connected in sequence to form a hollow shape that is connected from top to bottom, and the mesh (2) is bent in the middle and connected to the outer shell (1) at both ends to block the upper opening of the outer shell (1); a limiting plate (3) is installed at the edge of at least one end of the two ends of the mesh (2), and the limiting plate (3) enables one end of the mesh (2) to be detachably connected and fixed to the outer shell (1); in an initial state, the limiting plate (3) can form a lateral limit on the mesh (2) relative to the length direction of the outer shell (1), and an axial upward limit in the height direction of the outer shell (1); when an external force acts on the mesh (2), the mesh (2) and the limiting plate (3) can form an axial downward floating displacement relative to the height direction of the outer shell (1), and when the external force disappears, the mesh (2) and the limiting plate (3) can be automatically reset synchronously.

2. The mesh sheet capable of forming bidirectional limit and axial floating according to claim 1, characterized in that One end of the mesh sheet (2) is non-detachably connected and fixed to the inner wall of the outer shell (1), and a limiting plate (3) is installed at the edge of the other end, and the limiting plate (3) enables the mesh sheet (2) to be detachably connected and fixed to the outer shell (1).

3. The mesh sheet capable of forming bidirectional limit and axial floating according to claim 1 is characterized in that Limiting plates (3) are respectively installed at the edges of both ends of the mesh sheet (2), and the two limiting plates (3) enable the two ends of the mesh sheet (2) to be detachably connected and fixed to the inner side wall of the outer shell (1).

4. The mesh sheet capable of forming bidirectional limit and axial floating according to claim 1, characterized in that At least one cross bar (11) protruding from the inner wall and an insertion rod (12) connected to the end of the cross bar (11) are respectively provided on the inner walls of the two opposite side walls of the outer shell (1), the length of the cross bar (11) is greater than or equal to the sum of the thickness of the limiting plate (3) and the mesh (2), and the cross bar (11) and the insertion rod (12) are combined to form a hook shape; hook holes (4) are respectively provided at corresponding positions of the limiting plate (3) and the mesh (2), and the insertion rod (12) is inserted into the hook hole (4) to block the mesh (2) The upper end opening of the outer shell (1) is detachably connected and fixed to the outer shell (1), and under the restriction of the cross bar (11) and the insertion rod (12), the limiting plate (3) and the mesh (2) form a longitudinal limit in the width direction relative to the outer shell (1) and an axial upward limit relative to the outer shell (1); under the action of an external force, the limiting plate (3) and the mesh (2) can float and displace downward along the axial direction of the insertion rod (12); and when the external force disappears, the limiting plate (3) and the mesh (2) can automatically reset.

5. The mesh sheet capable of forming bidirectional limit and axial floating according to claim 1, characterized in that Under the action of external force, the mesh sheet (2) and the limiting sheet (3) float downward axially along the height direction of the outer shell (1) by a distance that is less than the length of the insertion rod (12).

6. The mesh sheet capable of forming bidirectional limit and axial floating according to claim 1, characterized in that At least one limiting column (5) protruding from the inner wall is provided on each of the inner walls of the two opposite sides of the outer shell (1), and limiting holes (6) are provided at corresponding positions of the limiting plate (3) and the mesh (2), the width of the limiting hole (6) matches the diameter of the limiting column (5), and the length thereof is greater than the diameter of the limiting column (5); each limiting column (5) is inserted into the limiting hole (6) so that the mesh (2) forms a lateral limit relative to the length direction of the outer shell (1), and under the action of an external force, the mesh (2) and the limiting plate (3) can float and displace downward along the axial direction of the limiting column (5).

7. The mesh sheet capable of forming bidirectional limit and axial floating according to claim 1, characterized in that A plurality of mounting holes (22) are respectively provided at the edges of both ends of the mesh (2), and a matching number of connecting posts (7) are provided at corresponding positions of the limiting plate (3). The connecting posts (7) are inserted into the mounting holes (22) and protrude out of the mounting holes (22) so that the mesh (2) and the limiting plate (3) are detachably connected or fixedly connected.

8. The mesh sheet capable of forming bidirectional limit and axial floating according to claim 7, characterized in that When viewed from the length direction of the outer shell (1), the opposite side walls of the outer shell (1) gradually become smaller from bottom to top, and a plurality of avoidance grooves (8) are provided on the inner walls of the side walls of the outer shell (1), and the ends of the connecting columns (7) protruding from the mounting holes (22) of the mesh sheet (2) are placed in the avoidance grooves (8).

9. The cutter head assembly is characterized by The invention comprises a mesh sheet capable of forming bidirectional limitation and axial floating as described in any one of claims 1 to 8.

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