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

Abstract

The utility model 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 utility model has the beneficial effects that the limiting pieces are additionally arranged, and compared with the traditional mode that the two ends of the mesh are fixed with the mesh mounting seat by adopting a hot-melting riveting process, the hot-riveting welding fixation is reduced, the assembly process of the mesh is optimized, the assembly benefit of the mesh can be obviously improved, and the assembly cost is reduced.

Description

Technical Field

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

[0002] The applicant applied for a patent on April 29, 2016, with the name of "razor head assembly", with the publication number of CN205600776U. Figure 7 As shown, the existing mesh cover 31 is provided with a plurality of rivet holes on both sides of the edge. During assembly, the rivet holes on both sides of the mesh cover 31 are positioned using the 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 one by hot melt welding or bonding. Finally, the mesh cover mounting seat 33 is connected and fixed to the cutter head cover 3.

[0003] Using the mesh cover mounting base 33 to fix the mesh cover 31 and then connecting the mesh cover mounting base 33 to the cutter head cover 3 can ensure the secure installation of the mesh cover 31. However, during assembly, the mesh cover 31 must first be fixed to the mesh cover mounting base 33 by heat riveting, and then the mesh cover mounting base 33 must be connected to the cutter head cover 3. This not only increases the production cost of the mesh cover mounting base 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 is in contact with the skin and cannot slide downward when 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. Utility Model Content

[0005] In order to solve the above technical problems, the present invention provides a mesh and cutter head assembly that can form a two-way limit and can float axially. When assembling the mesh, not only can the mesh mounting seat be eliminated, thus reducing component costs, but the limit plate can also be used to detachably connect the mesh to the outer shell and form horizontal and axial limits, 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, preventing the mesh from being broken by the blade 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 utility model is to form a mesh with bidirectional limitation and axial floating ability, 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 end 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 makes one end of the mesh 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 when the external force disappears, the mesh and the limiting plate can automatically reset synchronously.

[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, which 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 by a distance that 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 sides 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 its length is greater than the diameter of the limiting column; each limiting column is inserted into the limiting hole to form a lateral limit of 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 provided at the edges of both ends of the mesh, and a matching number of connecting columns are provided at the corresponding positions of the limiting plate. The connecting columns are inserted into the mounting holes and protrude out of the mounting holes to enable the mesh and the limiting plate to 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 two 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 a bidirectional limit and can float axially.

[0015] The beneficial effect of the present invention is that a limiting plate is installed at the edge of at least one end of the mesh, and the limiting plate enables one end of the mesh to be detachably connected and fixed to the outer shell; the addition of the limiting plate reduces the need for hot riveting and fixing, and optimizes the assembly process of the mesh, compared with the traditional method of fixing both ends of the mesh with the mesh mounting seat by hot melt riveting, which 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 limiting 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 that forms a two-way limit and can float up and down according to an embodiment of the utility model

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

[0018] Figure 3 for Figure 2 Cross-sectional structural diagram at AA in the middle

[0019] Figure 4 for Figure 3 Cross-sectional structural 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 utility model

[0022] Figure 7 for Figure 5 Cross-sectional structural diagram at DD

[0023] Figure 8 for Figure 5 Cross-sectional three-dimensional structure diagram at DD in the middle

[0024] Figure 9 This is a three-dimensional assembly structure diagram of the mesh and the limiting plate in the embodiment of the utility model

[0025] Figure 10 This is a side view of the assembly structure of the mesh and the limiting plate in the embodiment of the utility model

[0026] Figure 11 This is a bottom perspective structural diagram of the outer shell in the embodiment of the utility model

[0027] Figure 12 This is a bottom plan view of the outer shell in the embodiment of the utility model

[0028] Figure 13 A three-dimensional structural diagram of the limiting piece in the embodiment of the utility model DETAILED DESCRIPTION

[0029] The following is combined with Figures 1 to 13 The following further describes the implementation of the present invention:

[0030] The present invention provides a bidirectionally limited and axially floating mesh, comprising an outer shell 1 connected to the body of the hair trimming tool (not shown). The outer shell 1 comprises four sequentially connected surfaces, forming a hollow space that communicates with each other from top to bottom. A mesh 2 is curved in the middle, with both ends connected to the outer shell 1 to seal the upper opening of the outer shell 1. The mesh 2 is a flexible sheet (typically less than 30 mm thick) and has several hair inlet holes 21 provided in the curved region thereof for introducing hair. The movable blade, supported by an elastic member (not shown), constantly engages with the inner surface of the mesh 2 to cut hair.

[0031] In order to prevent the mesh 2 from breaking or being damaged due to bending deformation when it contacts the skin and is subjected to external force, a limit plate 3 is installed at the edge of at least one end of the mesh 2, and the limit plate 3 makes the mesh 2 one end and the outer shell 1 detachably connected and fixed; with the addition of the limit plate 3, when assembling, the limit plate 3 can drive the mesh 2 one end and the outer shell 1 to form a detachable connection and fixation, compared with the traditional mesh 2 both ends of which are fixed to the mesh mounting seat by hot melt riveting process, at least one end of the mesh 2 is fixed to the outer shell 1 by the limit plate 3, 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 be fixed with the mesh mounting seat first, and then the mesh mounting seat is installed in the outer shell 1. The use of the limit plate 3 to directly connect the mesh 2 to the outer shell 1 reduces the mesh mounting seat component, and the production cost can be significantly reduced. Moreover, the assembly structure of the mesh 2 is simpler.

[0032] During the hair trimming process, the mesh 2 needs to cooperate with the movable blade component provided at the bottom of the mesh 2, and the movable 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 movable blade, causing the mesh 2 to be displaced and affecting the introduction and trimming of 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. In other words, the limit plate 3 can keep the mesh 2 and the outer shell 1 integral with the length direction of the outer shell 1. 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 end opening of the outer shell 1 and will not detach from the upper end opening of the outer shell 1, thereby preventing the movable blade 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 in use, the mesh 2 is directly squeezed by the hand when pressing the hair trimming tool. At this time, the end of the mesh 2 on which the limit plate 3 is installed will float 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 under the force, 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 for continuous use.

[0034] In order to improve the installation firmness and assembly efficiency of the mesh 2 and the outer shell 1, Figure 6As shown, one end of the mesh 2 is fixedly connected 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, which allows the mesh 2 to be removably connected and fixed to the outer shell 1. The irremovable connection and fixation refers to the connection and fixation of one end of the mesh 2 to the inner wall of the outer shell 1 by bonding or hot-melt riveting, which can improve the connection strength of the mesh 2 and the outer shell 1; the other end of the mesh 2 is removably connected and fixed to the outer shell 1 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 4 As shown, limiting plates 3 can also be provided at both ends of the mesh 2, and then the two limiting plates 3 are used to form a detachable connection and fixation with the outer shell 1, that is, both ends of the mesh 2 are detachably hooked with the inner wall of the outer shell 1 through the limiting plates 3. This reduces the more complicated process of bonding or hot-melt riveting, improves the 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 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; cross bars 11 and insertion rods 12 are respectively provided on the inner walls of the 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. In this way, the insertion rod 12 can be used to limit the limiting plate 3 and the mesh 2, preventing the mesh 2 and the limiting plate 3 from deviating toward the center in the width direction of the outer shell 1, preventing interference with the reciprocating swing of the movable knife component, and improving 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 offset 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 achieve a quick assembly connection between the mesh 2 and the outer shell 1, hook holes 4 are provided at corresponding positions on the limiting plate 3 and the mesh 2. 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 holes 4 on the mesh 2 and the limiting plate 3, the hook holes 4 can be quickly placed on the outside of the insertion rod 12 during assembly to quickly form a detachable connection and fixation between the mesh 2 and the outer shell 1, while ensuring the connection stability between the mesh 2 and the outer shell 1, improving the assembly efficiency of the mesh 2 and minimizing the assembly cost. In actual production, the hook hole 4 is a square hole, the width of which 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 limiting plate 3 from being separated from the insertion rod 12 when floating downward in the axial direction, 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 using a hook connection. When the hook holes 4 in the mesh 2 and the limiting plate 3 are placed on the crossbar 11, the crossbar 11 can limit the limiting plate 3 and mesh 2 axially upward, so that the mesh 2 always blocks the upper opening of the outer shell 1, preventing the movable blade component below the mesh 2 from directly contacting the skin and injuring it. Under the restriction of the insertion rod 12, the mesh 2 is subjected to external force and moves axially downward in the height direction of the outer shell 1 synchronously with the limiting plate 3. Moreover, 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 movable blade 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 movable blade component.

[0039] To prevent the mesh 2 from separating from the insertion rod 12 when the outer shell 1 is subjected to an external force and floats axially downward in the height direction of the outer shell 1, the mesh 2 and the limiting plate 3 float axially downward in the height direction of the outer shell 1 under the action of the external force. The 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 separating from the insertion rod 12 when the mesh 2 and the limiting plate 3 float axially downward, thereby improving the reliability of the connection between the mesh 2 and the limiting plate 3 and 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 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 its length 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 providing a limiting post 5 on the outer shell 1 and providing 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 post 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 movable blade component swings back and forth, ensuring the hair trimming performance when the mesh 2 and the movable blade 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 post 5 in the outer shell 1, ensuring the stability of the axial upward and downward 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 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 can be detachably connected; by providing mounting holes 22 on the mesh 2 and connecting posts 7 on the limiting plate 3, each connecting post 7 is respectively inserted into the mounting holes 22 on the mesh 2 during assembly so that the limiting plate 3 and the mesh 2 can quickly form a detachable and movable connection; since the mesh 2 and the limiting plate 3 are hooked and connected to the outer shell 1, they are restricted by the insertion rod 12, and the connecting posts 7 will not be separated from the mounting holes 22 at the ends of the mesh 2. Therefore, the cooperation between the connecting posts 7 and the mounting holes 22 can greatly improve the assembly efficiency of the mesh 2. Of course, the ends of the connecting posts 7 can also be hot-melt riveted to form a non-detachable fixed connection between the limiting plate 3 and the mesh 2. However, due to the restriction of the insertion rod 12, the connecting posts 7 will not be separated from the mounting holes 22 on the mesh 2. Hot-melt riveting the connecting posts 7 to the mounting holes 22 of the mesh 2 is basically a redundant assembly process. Therefore, the detachable and movable connection formed by the connecting posts 7 and the mounting holes 22 is the preferred embodiment. The specific production method 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 opposite side walls of the outer shell 1 are gradually narrowed from bottom to top when viewed in 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 collisions when the hair trimming tool is not in use, thereby extending the service life.

[0043] Since the 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 limiting plate 3 due to the narrowing width, 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 2 are placed in the avoidance grooves 8. By providing the avoidance grooves 8, material shrinkage can be avoided during the injection molding of the outer shell 1, thereby improving the yield rate. In addition, the side walls of the outer shell 1 can be prevented from obstructing the up and down floating of the mesh 2 and the limiting plate 3, ensuring the smoothness of the up and down floating displacement of the mesh 2 and the limiting plate 3. Secondly, the avoidance grooves 8 can also play a limiting and guiding role on the connecting columns 7, further improving the working stability of the mesh 2 and the limiting 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 a bidirectional limit and can float axially.

[0045] The above embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the scope of protection 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 communicating with each other from top to bottom; the mesh (2) is bent in the middle and its two ends are connected to the outer shell (1) to block the upper end opening of the outer shell (1); a limiting piece (3) is installed at the edge of at least one end of the two ends of the mesh (2); the limiting piece (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 piece (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 piece (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 piece (3) can be automatically reset synchronously.

2. The mesh sheet capable of forming a two-way limit and axial floating according to claim 1 is characterized in that One end of the mesh (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. The limiting plate (3) enables the mesh (2) to be detachably connected and fixed to the outer shell (1).

3. The mesh sheet capable of forming a two-way 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 (2), and the two limiting plates (3) enable the two ends of the mesh (2) to be detachably connected and fixed to the inner side wall of the outer shell (1).

4. The mesh sheet capable of forming a two-way limit and axial floating according to claim 1 is 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). 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). 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 piece (3) and the mesh (2) form a longitudinal restriction in the width direction relative to the outer shell (1) and an axial upward restriction relative to the outer shell (1); under the action of an external force, the limiting piece (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 piece (3) and the mesh (2) can automatically reset.

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

6. The mesh sheet capable of forming a two-way limit and axial floating according to claim 1 is characterized in that At least one limiting column (5) protruding from the inner wall is provided on each 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). 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 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 a two-way limit and axial floating according to claim 1 is 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 a two-way limit and axial floating according to claim 7 is characterized in that 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 two side walls of the outer shell (1), and the ends of the connecting columns (7) protruding from the mounting holes (22) of the mesh (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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