A knife head mechanism

Abstract

The utility model discloses a cutter head mechanism in the field of shavers, including a moving cutter assembly, a fixed cutter assembly, a rolling element, a pressing element and a gasket. The moving cutter assembly and the fixed cutter assembly are horizontally slidably matched, the pressing element is provided with a first mounting position and a second mounting position, at least a part of the moving cutter assembly is provided at the first mounting position, and at least a part of the rolling element is provided at the second mounting position; the gasket is provided at a side of the fixed cutter assembly close to the moving cutter assembly, and a limiting part that cooperates with the second mounting position is provided on the gasket, and at least a part of the rolling element is provided in the limiting part. The utility model can reduce the contact area between the tail of the moving cutter assembly and the tail of the fixed cutter assembly, thereby reducing the friction between the two, effectively reducing the generation of heat, effectively reducing the temperature of the cutter head of the shaver, and the blade can be closer to the skin to cut the hair, thereby improving the cutting safety and comfort.

Description

Technical Field

[0001] The utility model relates to the technical field of shavers, in particular to a cutter head mechanism. Background Art

[0002] A shaver is a tool for shaving hair, which includes a fixed blade assembly and a movable blade assembly, and the front ends of the fixed blade assembly and the movable blade assembly are both provided with tooth cutting edges. When the shaver is working, the movable blade assembly moves horizontally relative to the fixed blade assembly, so that the tooth cutting edge of the movable blade assembly produces a relatively horizontal horizontal shearing effect relative to the tooth cutting edge of the fixed blade assembly, thereby achieving hair shaving.

[0003] Due to friction and shearing, the fixed knife assembly and the movable knife assembly will generate a large amount of heat when working. If this heat cannot be dissipated in time, the temperature of the cutter head will increase, which will in turn affect the stability and service life of the cutter head and may even cause safety hazards.

[0004] The above defects need to be solved urgently. Utility Model Content

[0005] In order to solve the problem that the fixed blade assembly and the movable blade assembly in the existing shaver generate a lot of heat during operation, which causes the temperature of the blade head to rise and affects the stability and service life of the blade head, the utility model provides a blade head mechanism.

[0006] The technical solution of the utility model is as follows:

[0007] A cutter head mechanism, comprising a moving cutter assembly, a fixed cutter assembly and a rolling element, wherein the moving cutter assembly and the fixed cutter assembly are horizontally and laterally slidably matched, and further comprising:

[0008] A pressing member, wherein a first mounting position and a second mounting position are arranged on the pressing member, at least a part of the movable knife assembly is arranged on the first mounting position, and at least a part of the rolling member is arranged on the second mounting position; a plug-in column is arranged on the pressing member, and a plug-in hole is arranged on the movable knife assembly, and the plug-in column is plugged into the plug-in hole;

[0009] A gasket, the gasket is arranged on a side of the fixed knife assembly close to the movable knife assembly, and the gasket is provided with a limiting portion that cooperates with the second mounting position, and at least a part of the rolling element is arranged in the limiting portion;

[0010] A slingshot, a limiting groove is arranged on a side of the pressing member away from the movable knife assembly, a fixed end of the slingshot is connected to the gasket, and a pressure-applying end of the slingshot is arranged in the limiting groove.

[0011] According to the utility model of the above scheme, the fixed knife assembly includes a fixed knife head portion, and the movable knife assembly includes a movable knife head portion, the fixed knife head portion is in contact with the movable knife head portion, the fixed knife head portion is bent toward a side close to the clamping member to form a fixed knife tail portion, and the movable knife head portion is bent toward a side away from the clamping member to form a movable knife tail portion, so that there is a gap between the fixed knife tail portion and the movable knife tail portion.

[0012] According to the utility model of the above scheme, the limiting portion is a sliding groove, and the sliding groove extends along the moving direction of the movable knife assembly, and the second mounting position includes a receiving groove, and the receiving groove cooperates with the sliding groove so that the rolling element is limited between the two.

[0013] According to the above-mentioned solution of the utility model, the accommodating groove is recessed inwardly to form a deformation groove which is convenient for the accommodating groove to wrap the rolling element.

[0014] According to the above-mentioned solution of the utility model, at least a portion of the gasket extends into between the movable knife assembly and the fixed knife assembly.

[0015] According to the utility model of the above scheme, a boss is arranged on the gasket, and sliding grooves serving as the limiting parts are arranged on both sides of the boss, and the sliding grooves extend along the moving direction of the movable knife assembly.

[0016] According to the utility model of the above solution, the boss includes a first side surface and a second side surface, the first side surface and the second side surface both extend along the moving direction of the movable knife assembly, and the first side surface and the second side surface are parallel to each other and perpendicular to the upper surface of the gasket;

[0017] The second installation position includes a receiving groove, and the receiving groove cooperates with the sliding groove so that a plurality of the rolling elements are restricted therebetween.

[0018] According to the utility model of the above solution, the boss includes a first side surface and a second side surface, the first side surface and the second side surface both extend along the moving direction of the movable knife assembly, and the first side surface and the second side surface are both inclined inwardly;

[0019] The second installation position includes a receiving groove, and the receiving groove cooperates with the sliding groove so that a plurality of the rolling elements are restricted therebetween.

[0020] According to the utility model of the above scheme, the limiting portion is a boss, and the boss extends along the moving direction of the movable knife assembly, and the second mounting position includes a receiving groove, and the receiving groove cooperates with the boss so that the rolling element is limited between the two.

[0021] The utility model according to the above scheme has the following beneficial effects:

[0022] In the above-mentioned cutter head mechanism, at least a part of the rolling member is arranged on the second mounting position of the pressing member, the gasket is arranged on the side of the fixed knife assembly close to the movable knife assembly, and the gasket is provided with a limiting portion that cooperates with the second mounting position, and at least a part of the rolling member is arranged in the limiting portion, that is, the rolling member is arranged between the pressing member and the gasket, which can reduce the contact area between the tail of the movable knife assembly and the tail of the fixed knife assembly, thereby reducing the friction between the two, thereby reducing the heat generation, and effectively reducing the temperature of the shaver head, thereby extending the service life of the fixed knife assembly and the movable knife assembly, and ensuring the long-term stability and reliability of the shaver.

[0023] In addition, the rolling element is arranged between the pressing element and the gasket, and the moving blade assembly and the fixed blade assembly slide horizontally and cooperate with each other to realize the parallel movement of the blades for cutting, so that the blades can cut the hair closer to the skin, which improves the safety and comfort of cutting. In addition, the gasket not only limits the steel ball, but also serves as a buffer layer between the fixed blade assembly and the moving blade assembly, further reducing friction and vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of embodiment 1;

[0025] Figure 2 is a cross-sectional view of embodiment 1;

[0026] Figure 3 This is one of the split diagrams of the first embodiment;

[0027] Figure 4 This is the second disassembly diagram of the first embodiment;

[0028] Figure 5 It is a structural schematic diagram of the pressing member of the first embodiment;

[0029] Figure 6 It is a structural schematic diagram of Embodiment 2;

[0030] Figure 7 is a cross-sectional view of the second embodiment;

[0031] Figure 8 This is one of the split diagrams of Example 2;

[0032] Fig. 9 This is the second split diagram of the second embodiment;

[0033] Fig.10 It is a structural schematic diagram of the pressing member of the third embodiment;

[0034] Fig.11 This is a schematic diagram of the structure of Embodiment 3;

[0035] Fig.12is a cross-sectional view of embodiment 3;

[0036] Fig.13 This is one of the split diagrams of Example 3;

[0037] Fig.14 This is the second split diagram of the third embodiment;

[0038] Fig.15 It is a structural schematic diagram of a pressing member of Embodiment 4;

[0039] Fig.16 It is a structural schematic diagram of Embodiment 4;

[0040] Fig.17 is a cross-sectional view of embodiment 4;

[0041] Fig.18 This is one of the split diagrams of Example 4;

[0042] Fig.19 This is the second disassembly diagram of the fourth embodiment;

[0043] Fig. 20 It is a structural schematic diagram of a pressing member of Embodiment 4;

[0044] Fig.21 It is a schematic structural diagram of a rolling element of Embodiment 4;

[0045] Fig. 22 is a cross-sectional view of Embodiment 5;

[0046] Fig.23 This is a disassembled diagram of Example 5.

[0047] In the figure, 1, movable knife assembly; 11, movable knife head; 12, movable knife tail; 13, plug-in hole; 2, fixed knife assembly; 21, fixed knife head; 22, fixed knife tail; 3, rolling member; 31, groove; 32, rolling column; 4, pressing member; 4a, first pressing member; 4b, second pressing member; 41, plug-in column; 42, limiting groove; 43, first mounting position; 431, elastic deformation groove; 44, second mounting position; 441, accommodating groove; 442, deformation groove; 5, slingshot; 6, gasket; 6a, first gasket; 6b, second gasket; 61, first sliding groove; 62, boss; 63, second sliding groove; 7, fixing member; 8, connecting member. DETAILED DESCRIPTION

[0048] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0049] Embodiment 1

[0050] like Figure 1 , Figure 2 As shown, the utility model provides a cutter head mechanism, including a movable cutter assembly 1, a fixed cutter assembly 2, a rolling member 3, a pressing member 4, a slingshot 5 and a gasket 6.

[0051] like Figure 2 As shown, in this embodiment, the fixed blade assembly 2 includes a fixed blade head 21 and a fixed blade tail 22, and the movable blade assembly 1 includes a movable blade head 11 and a movable blade tail 12. The fixed blade head 21 contacts the movable blade head 11, and the movable blade assembly 1 is driven by the motor to slide horizontally with the fixed blade assembly 2, thereby achieving hair shaving. In addition, the fixed blade head 21 is bent toward the side close to the pressing member 4 to form the fixed blade tail 22, and the movable blade head 11 is bent toward the side away from the pressing member 4 to form the movable blade tail 12, so that there is a gap between the fixed blade tail 22 and the movable blade tail 12, thereby reducing the contact area between the fixed blade assembly 2 and the movable blade assembly 1, thereby reducing the friction between the movable blade assembly 1 and the fixed blade assembly 2, and reducing the generation of heat.

[0052] like Figure 4 , Figure 5 As shown, in this embodiment, the clamping member 4 is provided with a plug-in column 41, and the movable blade assembly 1 is provided with a plug-in hole 13, and the plug-in column 41 is plugged into the plug-in hole 13, so as to ensure the precise positioning of the movable blade assembly 1 on the clamping member 4, and facilitate the quick installation of the clamping member 4 on the movable blade assembly 1, which helps to maintain the stability of the shaver head and the accuracy of shaving. In addition, the clamping member 4 and the movable blade assembly 1 are made of different materials, so as to reduce the direct contact structure between the same materials, reduce the friction between the clamping member 4 and the movable blade assembly 1, and improve the heat dissipation effect of the shaver.

[0053] like Figure 4 , Figure 5 As shown, in this embodiment, a limiting groove 42 is provided on one side of the pressing member 4 away from the movable blade assembly 1, the fixed end of the slingshot 5 is connected to the gasket 6, and the pressure-applying end of the slingshot 5 is provided in the limiting groove 42. The design of the limiting groove 42 ensures that the slingshot 5 can be accurately positioned on the pressing member 4, thereby tightly connecting the pressing member 4 with the movable blade assembly 1, thereby achieving synchronous movement of the pressing member 4 and the movable blade assembly 1, and ensuring the coordination and consistency of the shaver during operation.

[0054] like Figures 2 to 5As shown, in this embodiment, the pressing member 4 is provided with a first mounting position 43 and a second mounting position 44, at least a part of the movable blade assembly 1 is provided at the first mounting position 43, and at least a part of the rolling member 3 is provided at the second mounting position 44. By means of the pressing member 4, the length of the movable blade assembly 1 can be reduced, the space utilization rate of the shaver can be improved, and the installation of the gasket 6 inside the shaver can be facilitated. In addition, the gasket 6 is provided on the side of the fixed blade assembly 2 close to the movable blade assembly 1, and the gasket 6 is provided with a limiting portion that cooperates with the second mounting position 44, and at least a part of the rolling member 3 is provided in the limiting portion, that is, the rolling member 3 is provided between the pressing member 4 and the gasket 6, and the direct sliding or rolling contact can reduce the friction between the movable blade assembly 1 and the fixed blade assembly 2, reduce the temperature of the cutter head, thereby reducing the generation of heat, and further extend the service life of the fixed blade assembly 2 and the movable blade assembly 1, and ensure the long-term stability and reliability of the shaver. In addition, the movable blade assembly and the fixed blade assembly slide horizontally and laterally to achieve parallel movement shearing of the blade, and the blade can shear the hair closer to the skin, thereby improving the shearing safety and comfort. In addition, the gasket 6 not only limits the steel ball, but also serves as a buffer layer between the fixed knife assembly 2 and the movable knife assembly 1 to further reduce friction and vibration.

[0055] like Figures 2 to 5 As shown, in this embodiment, the limiting portion on the gasket 6 is a first sliding groove 61, and the first sliding groove 61 extends along the moving direction of the movable blade assembly 1. The first sliding groove 61 provides precise guidance for the rolling element 3 when the shaver is working, so that the rolling element 3 can move smoothly and linearly, which is convenient for the movable blade assembly 1 and the fixed blade assembly 2 to slide horizontally and cooperate to achieve hair shaving. At the same time, the second mounting position 44 on the pressing member 4 includes a receiving groove 441, and the receiving groove 441 cooperates with the first sliding groove 61, so that the rolling element 3 is limited between the two, preventing the rolling element 3 from moving or deviating unnecessarily inside the shaver, ensuring that the rolling element 3 will not deviate from its predetermined rolling path, thereby maintaining the stability and consistency of the shaver head. In addition, the rolling element 3 can be designed as a steel ball, the surface of which is smoother and has a higher hardness and is not easy to deform, which reduces the friction resistance and can ensure the service life. Of course, in actual design, the structure of the rolling element 3 can be designed according to actual needs.

[0056] like Figures 2 to 5As shown, in this embodiment, the accommodating groove 441 is recessed inward to form a deformation groove 442, and the deformation groove 442 can be slightly deformed, so that the accommodating groove 441 can wrap the rolling element 3 more tightly, ensuring that the rolling element 3 is kept in the correct position when the shaver is working, and can compensate for the wear of the worn rolling element 3 during the shaving process, which can extend the service life of the rolling element 3 and reduce the maintenance requirements of the shaver. In addition, the deformation groove 442 can avoid the top of the rolling element 3, reduce the contact area of ​​the rolling element 3 during the movement in the accommodating groove 441, and at the same time, the deformation groove 442 can store lubricating grease, further reduce friction, and extend the service life of the rolling element 3.

[0057] like Figure 2 As shown, in this embodiment, an elastic deformation groove 431 is provided on the first installation position 43 of the pressing member 4, and the pressing member 4 is in an unassembled state, so that the second installation position 44 of the pressing member 4 forms a certain angle with the first installation position 43. When the pressing member 4 is assembled, the pressing member 4 is subjected to the pressure of the slingshot 5, so that the second installation position 44 and the first installation position 43 are on the same plane, that is, the elastic deformation groove 431 is deformed during the assembly process, so that it can be automatically adjusted according to the size tolerance of each part.

[0058] like Figure 2 As shown, in this embodiment, at least a portion of the gasket 6 extends between the movable blade assembly 1 and the fixed blade assembly 2, which helps to reduce the direct friction between the movable blade assembly 1 and the fixed blade assembly 2 during shaving, reduce noise and vibration, and the gasket 6 can effectively disperse the heat generated during shaving, avoid overheating of the movable blade assembly 1 and the fixed blade assembly 2, and extend the service life of the movable blade assembly 1 and the fixed blade assembly 2. Of course, in other embodiments, the gasket 6 can also be designed not to extend between the movable blade assembly 1 and the fixed blade assembly 2. In actual design, the positional relationship between the gasket 6 and the movable blade assembly 1 and the fixed blade assembly 2 can be designed according to actual needs.

[0059] Embodiment 2

[0060] like Figures 6 to 10 As shown, different from the first embodiment, a boss 62 is provided on the gasket 6 of this embodiment, and second sliding grooves 63 as limiting parts are provided on both sides of the boss 62, and the second sliding grooves 63 extend along the moving direction of the movable knife assembly 1, ensuring that the rolling member 3 can roll smoothly along the correct path when the shaver is working.

[0061] like Figures 6 to 10As shown, in this embodiment, the boss 62 includes a first side surface and a second side surface, both of which extend along the moving direction of the movable blade assembly 1, and the first side surface and the second side surface are parallel to each other and perpendicular to the upper surface of the gasket 6, and two second sliding grooves 63 are respectively arranged on the first side surface and the second side surface, that is, the boss 62 is a rectangular parallelepiped, which can extend the stability of one row of rolling elements 3 to two rows within the limited internal space of the shaver, which helps to maintain the rolling elements 3 to move linearly with the movable blade assembly 1, and ensure the stability and uniformity of the shaver during operation. In addition, the second mounting position 44 on the pressing member 4 includes a receiving groove 441, and the receiving groove 441 cooperates with the second sliding groove 63, so that a number of rolling elements 3 are restricted between the two, so that the rolling elements 3 can roll along the second sliding groove 63, thereby reducing the friction between the pressing member 4 and the gasket 6, reducing the generation of heat, and extending the service life of the shaver.

[0062] like Figure 7 As shown, in this embodiment, the pressing member 4 is connected to the gasket 6 through the boss 62 and the rolling member 3, which can reduce the contact area and pressure between the tail of the movable knife assembly 1 and the tail of the fixed knife assembly 2, thereby further reducing the friction between the two, so that the temperature of the blade is further reduced. In addition, in other embodiments, three or four rows of rolling members 3 can also be set on the gasket 6, so as to improve the stability of the parallel movement of the movable knife assembly 1 and the pressing member 4.

[0063] like Figures 8 to 9 As shown, in this embodiment, a fixing member 7 is provided on the top of the gasket 6, a first connecting hole is provided on the fixing member 7, a second connecting hole is provided on the gasket 6, a third connecting hole is provided on the fixed knife assembly 2, and a connecting member 8 passes through the first connecting hole, the second connecting hole and the third connecting hole to match, thereby connecting the gasket 6 to the movable knife assembly 1. In addition, the connecting member 8 can be designed as a screw. Of course, in actual design, the structure of the connecting member 8 can be designed according to actual needs. In addition, in other embodiments, the fixing member 7 and the gasket 6 can also be designed to be integrally formed to increase the speed of assembly.

[0064] Embodiment 3

[0065] like Figures 11 to 15As shown, different from the second embodiment, the boss 62 in this embodiment includes a first side surface and a second side surface, both of which extend along the moving direction of the movable blade assembly 1, and both of which are inclined inwardly. At the same time, the second mounting position 44 of the clamping member 4 includes a receiving groove 441, and the receiving groove 441 cooperates with the second sliding groove 63 so that a number of rolling members 3 are restricted between the two, which facilitates the rolling members 3 to roll along the second sliding groove 63, thereby reducing the friction between the clamping member 4 and the gasket 6, reducing the generation of heat, and extending the service life of the shaver. It should be noted that the first side surface and the second side surface are both inclined inwardly so that the first side surface and the second side surface are inclined toward each other, so that the boss 62 is in the shape of a quadrangular pyramid, which optimizes the use of the internal space of the shaver. Compared with the second embodiment, the boss 62 of this embodiment can make the area of ​​the rolling element 3 leak out of the second sliding groove 63 more, so that the contact area between the accommodating groove 441 and the rolling element 3 is larger, and the horizontal movement of the clamping member 4 and the movable knife assembly 1 is more stable, which helps to improve the shaving efficiency and shaving quality of the shaver.

[0066] Embodiment 4

[0067] like Figures 16 to 21 As shown, different from the second and third embodiments, the limiting part of this embodiment is a boss 62, and the boss 62 extends along the moving direction of the movable blade assembly 1, and the second mounting position 44 of the clamping member 4 includes a receiving groove 441, and the receiving groove 441 cooperates with the boss 62 so that the rolling member 3 is limited therebetween. In addition, the cross-sectional shape of the boss 62 is triangular, which helps to increase the strength and stability of the boss 62, and the outer wall of the rolling member 3 is recessed inward to form a groove 31 that cooperates with the boss 62, so that at least a part of the boss 62 is located in the groove 31, which facilitates the rolling member 3 to roll along the boss 62, thereby reducing the friction between the clamping member 4 and the gasket 6, reducing the generation of heat, and extending the service life of the shaver.

[0068] like Fig.17 , Fig. 20 , Fig.21 As shown, in this embodiment, rolling posts 32 are symmetrically arranged at both ends of the rolling element 3, and both rolling posts 32 are in contact with the inner wall of the receiving groove 441 of the pressing member 4, so that the rolling element 3 rolls along the boss 62 more smoothly and stably, thereby improving the stability of the assembly. In addition, the diameter of the rolling post 32 is smaller than the diameter of the rolling element 3, which can reduce the friction between the rolling element 3 and the pressing member 4. In addition, the number of rolling elements 3 can be designed to be two, and of course, the number of rolling elements 3 can also be designed to be two or three. In actual design, the number of rolling elements 3 can be designed according to actual needs.

[0069] Embodiment 5

[0070] like Figure 22 to Figure 23As shown, different from the first embodiment, the pressing member 4 of this embodiment includes a first pressing member 4a and a second pressing member 4b, the first mounting position 43 is arranged on the first pressing member 4a, and the second mounting position 44 is arranged on the second pressing member 4b. In addition, a plug-in block is arranged on the first pressing member 4a, and a plug-in slot is arranged on the second pressing member 4b. The plug-in block is plugged into the plug-in slot, so that the first pressing member 4a and the second pressing member 4b can be detachably connected.

[0071] In this embodiment, the gasket 6 includes a first gasket 6a and a second gasket 6b, the second gasket 6b is provided with an avoidance groove, a clamping protrusion is provided in the avoidance groove, the first gasket 6a is provided with a clamping groove, the clamping protrusion is clamped and connected with the clamping groove, so that the first gasket 6a and the second gasket 6b are detachably connected. In addition, a limiting portion is provided on the first gasket 6a, the limiting portion is a first sliding groove 61, and the first sliding groove 61 extends along the moving direction of the movable blade assembly 1 to provide precise guidance for the rolling element 3 when the shaver is working.

[0072] In the present embodiment, the rolling member 3 is arranged between the second pressing member 4b and the first gasket 6a, and the first pressing member 4a is detachably connected to the second pressing member 4b, and the first gasket 6a is detachably connected to the second gasket 6b, so that the rolling member 3, the second pressing member 4b, and the first gasket 6a are combined to form a detachable component, which can be installed in shavers of different models, thereby improving the applicability and making the assembly of the shaver more convenient and quick. In addition, the size of the rolling member 3, the second pressing member 4b, and the first gasket 6a is relatively small, so that their size can be better controlled and the processing is more convenient. In addition, the detachable component formed by the combination of the rolling member 3, the second pressing member 4b, and the first gasket 6a can be designed as two, and the two detachable components are symmetrically arranged on both sides of the second gasket 6b, so that the assembly of the shaver is more stable.

[0073] In this embodiment, a guide portion is provided on the first gasket 6a, and a sliding portion is provided on the second clamping member 4b. The guide portion extends along the moving direction of the movable knife assembly 1, and the sliding portion is inserted into the bottom of the guide portion, so that the sliding portion can move along the guide portion, thereby facilitating the horizontal lateral sliding of the movable knife assembly 1 and the fixed knife assembly 2 to achieve hair cutting.

[0074] In this embodiment, a fixing member 7 is provided on the top of the second gasket 6b, a first connection hole is provided on the fixing member 7, a second connection hole is provided on the second gasket 6b, a third connection hole is provided on the fixed knife assembly 2, and a connecting member 8 passes through the first connection hole, the second connection hole and the third connection hole to match, thereby connecting the second gasket 6b to the movable knife assembly 1. In addition, the connecting member 8 can be designed as a screw. Of course, in actual design, the structure of the connecting member 8 can be designed according to actual needs. In addition, in other embodiments, the fixing member 7 and the second gasket 6b can also be designed to be integrally formed to increase the speed of assembly.

[0075] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A cutter head mechanism, comprising a moving cutter assembly, a fixed cutter assembly and a rolling element, wherein the moving cutter assembly and the fixed cutter assembly are horizontally slidably matched, characterized in that: Also includes: A pressing member, wherein a first mounting position and a second mounting position are arranged on the pressing member, at least a part of the movable knife assembly is arranged on the first mounting position, and at least a part of the rolling member is arranged on the second mounting position; a plug-in column is arranged on the pressing member, and a plug-in hole is arranged on the movable knife assembly, and the plug-in column is plugged into the plug-in hole; A gasket, the gasket is arranged on a side of the fixed knife assembly close to the movable knife assembly, and the gasket is provided with a limiting portion that cooperates with the second mounting position, and at least a part of the rolling element is arranged in the limiting portion; A slingshot, a limiting groove is arranged on a side of the pressing member away from the movable knife assembly, a fixed end of the slingshot is connected to the gasket, and a pressure-applying end of the slingshot is arranged in the limiting groove.

2. The cutter head mechanism according to claim 1, characterized in that: The fixed knife assembly includes a fixed knife head portion, and the movable knife assembly includes a movable knife head portion. The fixed knife head portion contacts the movable knife head portion, the fixed knife head portion is bent toward a side close to the pressing member to form a fixed knife tail portion, and the movable knife head portion is bent toward a side away from the pressing member to form a movable knife tail portion, so that there is a gap between the fixed knife tail portion and the movable knife tail portion.

3. The cutter head mechanism according to claim 1, characterized in that: The limiting portion is a sliding groove, and the sliding groove extends along the moving direction of the movable knife assembly. The second installation position includes a receiving groove, and the receiving groove cooperates with the sliding groove so that the rolling element is limited between the two.

4. The cutter head mechanism according to claim 3, characterized in that: The accommodating groove is recessed inwardly to form a deformation groove which is convenient for the accommodating groove to wrap the rolling element.

5. The cutter head mechanism according to claim 1, characterized in that: A boss is arranged on the gasket, and sliding grooves serving as the limiting parts are arranged on both sides of the boss, and the sliding grooves extend along the moving direction of the movable knife assembly.

6. The cutter head mechanism according to claim 5, characterized in that: The boss includes a first side surface and a second side surface, the first side surface and the second side surface both extend along the moving direction of the movable knife assembly, and the first side surface and the second side surface are parallel to each other and perpendicular to the upper surface of the gasket; The second installation position includes a receiving groove, and the receiving groove cooperates with the sliding groove so that a plurality of the rolling elements are restricted therebetween.

7. The cutter head mechanism according to claim 5, characterized in that: The boss includes a first side surface and a second side surface, the first side surface and the second side surface both extend along the moving direction of the movable knife assembly, and the first side surface and the second side surface are both inclined inwardly; The second installation position includes a receiving groove, and the receiving groove cooperates with the sliding groove so that a plurality of the rolling elements are restricted therebetween.

8. The cutter head mechanism according to claim 1, characterized in that: The limiting portion is a boss, and the boss extends along the moving direction of the movable knife assembly. The second installation position includes a receiving groove, and the receiving groove cooperates with the boss so that the rolling element is limited therebetween.

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