CN117226893A - Combined cutter head assembly for forming open teeth - Google Patents

Abstract

The application relates to a combined tool bit assembly for forming open teeth, which is characterized in that a static tool comprises a panel and at least one supporting plate, wherein the supporting plate is arranged below the panel and is vertical or inclined relative to the panel, so that a first interval is formed between the outer surface of the supporting plate and the edge of the panel; a swinging groove is arranged between the supporting plate and the panel, and the cutting teeth of the movable cutter respectively penetrate through the swinging groove and are arranged outside the supporting plate to form open teeth. The application has the advantages that the supporting plate is arranged below the panel, a first interval is formed between the outer surface of the supporting plate and the edge of the panel, the outer surface of the supporting plate far away from the edge of the panel can not block hair, the hair is quickened to enter the hair cutting groove, and the hair trimming benefit is improved. And secondly, each cutting tooth in the movable cutter respectively passes through the swinging groove and is arranged outside the supporting plate to form open teeth, and when the movable cutter is used, each cutting tooth is not blocked and isolated by the supporting plate, so that the cutting benefit is higher, the removal of broken hair is facilitated, and the phenomenon that the broken hair is accumulated in the static cutter to influence the reciprocating swing of the movable cutter is avoided.

Description

Combined cutter head assembly for forming open teeth

Technical Field

The application relates to a hair trimming device, in particular to a cutter head assembly which is combined to form open teeth and is mainly applied to the field of hair trimming tools.

Background

The hair trimmer mainly comprises a rotary transmission structure and a reciprocating transmission structure, and is favored by users because of the strong power of the reciprocating cutter head assembly.

Chinese patent CN108202346a discloses a reciprocating hair cutting device, comprising a long strip-shaped static blade (1), the static blade (1) comprises a long strip-shaped body (1-1) and a bending portion (1-2) bending along the long strip-shaped body (1-1), so that the static blade forms a semi-closed shape, and in order to facilitate the hair to enter the static blade (1), the long strip-shaped body (1-1) and the bending portion (1-2) are respectively provided with a hair inlet groove, so that the hair inlet grooves are mutually communicated to form an L shape, although the hair inlet groove is provided with the L shape to relatively enlarge the cross section of the hair inlet groove. However, during assembly, the L-shaped whisker feeding groove completely wraps the movable cutter inside the static cutter (1). When the length of the hair such as beard is more than 3mm, the hair such as beard can form a curled form due to the influence of external factors such as grease secreted by skin, and when the hair is trimmed, the bending part (1-2) can block the hair in the curled form, so that the hair inlet benefit is reduced.

Disclosure of Invention

In order to solve the above technical problems; the application provides a combined cutter head assembly capable of forming open teeth, which is convenient for production, processing and assembly, and can also improve hair feeding benefit and hair trimming performance.

In order to solve the technical problems, the application adopts the technical scheme that the combined cutter head assembly forming the open teeth comprises a static cutter and a movable cutter, wherein a plurality of cutting teeth which are arranged at intervals and are matched with each other to cut off hairs are respectively arranged on the static cutter and the movable cutter; the static knife comprises a panel and at least one supporting plate for supporting the panel, wherein each cutting tooth in the static knife is arranged at the edge of at least one side of the two sides of the panel, and the supporting plate is arranged below the panel, is fixedly connected with the panel and is vertical or inclined relative to the panel, so that the outer surface of the supporting plate and the edge of one side of the panel, on which the cutting tooth is arranged, form a first interval; a swinging groove is arranged between the supporting plate and the panel, each cutting tooth in the movable cutter respectively penetrates through the swinging groove and is arranged outside the supporting plate to form open teeth, and at least each cutting tooth in the movable cutter is always attached to the end face of the panel and can swing back and forth along the panel under the drive of external force.

Preferably, a swinging groove is formed between at least part of the upper end surface of the supporting plate and the inner surface of the panel at intervals, the upper end surface of the supporting plate forms the bottom surface of the swinging groove, and the distance between the outer surface of each cutting tooth in the movable cutter and the upper end surface of the supporting plate is not less than 0.1mm.

Preferably, a plurality of cutting teeth arranged at the edges of two sides of the panel form a cutting tooth group, and the upper end face and the lower end face of the cutting tooth group are positioned on different horizontal planes with the corresponding upper end face and lower end face in the panel, so that the thickness of the cutting tooth group is smaller than that of the panel.

Preferably, mounting seats are respectively arranged at two ends of the panel, and each mounting seat is respectively pressed above the panel and is fixedly connected with the supporting plate into a whole.

Preferably, the support plates are provided with two guide blocks, the upper end surfaces of the support plates are straight, the inner surfaces of the panels are fixedly provided with the guide blocks with the widths smaller than the widths of the panels, and the two support plates are respectively fixed on the two sides of the guide blocks so that a first interval is formed between the outer surfaces of the support plates and the edges of the panels; the upper end surface of each supporting plate and the inner surface of the panel are arranged at intervals to form a swinging groove.

Preferably, the support plates are provided with two plates and are arranged at intervals, and the interval distance is smaller than the width of the panel, so that a first interval is formed between the outer surface of each support plate and the edge of the panel; the two end edges of the upper end face of each supporting plate are respectively provided with a convex block, so that a groove is formed in the middle area of the upper end face of each supporting plate, the upper end face of each convex block is fixedly connected with the inner surface of the panel, and a swinging groove is formed between the groove and the inner surface of the panel.

Preferably, connecting pieces are arranged at the lower ends of the two supporting plates, so that the two supporting plates are connected into a whole in a U shape, mounting holes are respectively arranged at the edges of the upper ends of the supporting plates, a bolt penetrates through the mounting holes in one supporting plate and the pin holes in the guide block to fix the other supporting plate on two sides of the guide block, and the distance between the two bolts is larger than the reciprocating swing stroke of the movable knife.

Preferably, the movable cutter comprises a movable cutter blade, the movable cutter blade is provided with a U-shaped body, the width of the U-shaped body is smaller than the interval distance between the two support plates and is larger than the width of the guide block, the guide block is arranged outside the guide block, and a plurality of cutting teeth are arranged on two sides of the U-shaped body at intervals side by side and horizontally extend outwards to pass through the swinging grooves to form open teeth outside the support plates.

Preferably, point contact and/or line contact is formed between the U-shaped body and the guide block or support plate.

Preferably, the movable knife further comprises a movable knife seat, a positioning column is arranged on the upper end face of the movable knife seat, a linkage block with a linkage groove is arranged at the lower end of the movable knife seat, elastic pieces are arranged on two sides of the linkage block, and the positioning column is inserted into a positioning hole arranged at the bottom of the U-shaped body to enable the movable knife blade to be synchronously linked with the movable knife seat; the elastic piece is propped between the movable cutter seat and the connecting piece, so that each cutting tooth in the movable cutter blade is always kept in fit with the cutting tooth in the panel; the U-shaped supporting plates are provided with open grooves which are communicated with the two supporting plates, and the linkage blocks are arranged in the open grooves and are connected with the output shafts of the driving parts in a linkage way.

The hair cutting device has the advantages that the supporting plate is arranged below the panel, a first interval is formed between the outer surface of the supporting plate and the edge of the panel, and when hair is cut, the outer surface of the supporting plate far away from the edge of the panel can not block the hair, so that the hair can be accelerated to enter the hair cutting groove, and the hair cutting benefit is improved. And secondly, a swinging groove is arranged between the supporting plate and the panel, each cutting tooth in the movable cutter respectively penetrates through the swinging groove and is arranged outside the supporting plate to form open teeth, and in the use process, each cutting tooth in the movable cutter is not blocked and isolated by the supporting plate, so that the hair trimming benefit is higher. And the broken hair is more easily removed, and the broken hair is prevented from accumulating in the static knife to influence the reciprocating swing of the movable knife.

Drawings

FIG. 1 is a perspective view of a combined cutter head assembly for forming open teeth according to an embodiment of the present application

FIG. 2 is a transverse cross-sectional view of a modular cutter head assembly forming open teeth in accordance with an embodiment of the present application

FIG. 3 is a longitudinal cross-sectional view of a modular cutter head assembly forming open teeth according to an embodiment of the present application

FIG. 4 is a side view of a combined bit assembly forming open teeth according to an embodiment of the present application

FIG. 5 is a schematic perspective view of a movable blade according to an embodiment of the present application

FIG. 6 is a perspective view of a support plate according to an embodiment of the present application

FIG. 7 is a side view of a second embodiment of a support plate according to an embodiment of the present application

FIG. 8 is a perspective view showing a second embodiment of a support plate according to an embodiment of the present application

Detailed Description

Embodiments of the application are further described below with reference to the accompanying drawings:

as shown in fig. 1-8, the combined cutter head assembly for forming open teeth comprises a static cutter 1 and a movable cutter 2, wherein a plurality of cutting teeth 31 which are arranged at intervals and mutually matched for cutting hair are respectively arranged on the static cutter 1 and the movable cutter 2, a hair cutting groove 4 is formed between adjacent cutting teeth 31, and the hair can be cut by the mutually matched cutting teeth 31 in the static cutter 1 and the movable cutter 2 after entering the hair cutting groove 4. To facilitate the hair in a curled form to enter the hair-cutting groove 4 and to accelerate the hair advancing benefit, the static cutter 1 comprises a skin-contacting face plate 11 and at least one support plate 12 for supporting the face plate 11, and each cutting tooth 31 of the static cutter 1 is provided at least one edge of both sides of the face plate 11. The support plate 12 is arranged below the panel 11, is fixedly connected with the panel 11 and is vertical or inclined relative to the panel 11, so that a first interval H is formed between the outer surface of the support plate 12 and one side edge of the panel 11, where the cutting teeth 31 are arranged, of the panel 11, the support plate 12 is arranged below the panel 11, a first interval H is formed between the outer surface of the support plate 12 and the edge (also can be regarded as the tooth tip of the cutting teeth 31) of the panel 11, and when hair is cut, the outer surface of the support plate 12 far away from the edge (namely the tooth tip of the cutting teeth 31) of the panel 11 can not block the hair, thereby accelerating the hair to enter the hair cutting groove 4 and improving the hair cutting benefit. In the actual production process, the larger the distance of the first interval H is, the smaller the blocking or limiting of the hair is, the hair can enter the hair cutting groove 4 between the adjacent cutting teeth 31 in the static cutter 1 quickly without obstruction, and the hair feeding benefit is improved. However, the first spacing H cannot be infinitely large, limited by the overall width of the cutter head assembly. Therefore, when the first interval H is set, the interval distance of the first interval H is not smaller than the tooth length of the shorter cutting tooth 31 with reference to the tooth length of the relatively shorter cutting tooth 31 in both the stationary blade 1 and the movable blade 2 (the cutting tooth 31 lengths of the stationary blade 1 and the movable blade 2 are different).

In order to facilitate the mutual matching of the cutting teeth 31 in the movable cutter 2 and the cutting teeth 31 of the static cutter 1 to cut off hairs, a swinging groove 5 is arranged between the supporting plate 12 and the panel 11, the cutting teeth 31 in the movable cutter 2 respectively penetrate through the swinging groove 5 and are arranged outside the supporting plate 12 to form open teeth, the cutting teeth 31 in the movable cutter 2 penetrate through the swinging groove 5 and are arranged outside the supporting plate 12, the cutting teeth 31 in the movable cutter 2 and the cutting teeth 31 in the static cutter 1 are opposite to each other to form open teeth, the hair cutting device is not blocked and isolated by the supporting plate 12, and the hair cutting benefit is higher. And, more do benefit to the removal of broken hair, avoid broken hair to pile up in quiet sword 1 and influence the reciprocal swing of moving sword 2.

When the movable knife 2 swings reciprocally along the inner surface of the panel 11, frictional resistance is generated between the movable knife 2 and the panel 11, the temperature rise of the movable knife 2 and the panel 11 is increased, and the surface temperatures of the movable knife 2 and the static knife 1 are correspondingly increased to scald the skin. For this purpose, at least each cutting tooth 31 of the movable blade 2 is always attached to the inner surface of the panel 11, and can swing reciprocally along the panel 11 under the driving of an external force. Only ensure that each cutting tooth 31 in moving the sword 2 remains the laminating all the time with each cutting tooth 31 on the panel 11, like this relative area of contact between moving sword 2 and the quiet sword 1 that has reduced can effectively control quiet sword 1 and move the temperature rise between the sword 2, reduce the surperficial temperature of quiet sword 1 and moving sword 2, promote the use travelling comfort of tool bit subassembly.

Since the cutting teeth 31 in the movable cutter 2 respectively penetrate through the swinging groove 5 and are matched with the cutting teeth 31 in the panel 11 to cut off hairs, in order to optimize the structure of the swinging groove 5 and facilitate production, processing and assembly, the swinging groove 5 is formed by arranging the inner surface of the panel 11 and at least the partial upper end surface of the supporting plate 12 at intervals, and the upper end surface of the supporting plate 12 can form the groove bottom surface of the swinging groove 5. In order to prevent hair from entering the static cutter 1 or blocking during the actual assembly process, when each cutting tooth 31 in the movable cutter 2 passes through the swinging groove 5 and is arranged outside the supporting plate 12, the distance D between the outer surface of each cutting tooth 31 and the groove bottom surface of the swinging groove 5, i.e. the upper end surface of the supporting plate 12, is not smaller than 0.1mm, if the distance D is larger, for example, larger than 1mm, the hair can easily enter the inner side of the supporting plate 12 to generate a napping phenomenon, or the cut broken hair falls into the supporting plate 12 to influence the reciprocating swing of the movable cutter 2. If the size is too small, for example, less than 0.05mm, the hair is easy to be clamped between the cutting teeth 31 and the upper end surface, and when the movable knife 2 swings reciprocally, the skin is enabled to produce a pulling pain feeling, so that the use comfort of the knife head assembly is reduced.

In order to avoid bending deformation of the panel 11 during use and influence on hair trimming performance, the thickness of the panel 11 is generally greater than 0.5mm, and although the working strength of the panel 11 can be increased, the residual length of the hair roots is relatively increased, and the hair trimming effect is influenced. In order to improve the hair trimming effect, the cutting teeth 31 arranged at the edges of the two sides of the panel 11 form the cutting tooth group 3, the upper end face and the lower end face of the cutting tooth group 3 are positioned on different horizontal planes with the corresponding upper end face and lower end face in the panel 11, so that the thickness D1 of the cutting tooth group 3 is smaller than the thickness D2 of the panel 11, the upper end face and the lower end face of the cutting tooth group 3 at the edges of the two sides of the panel 11 are positioned on different horizontal planes with the upper end face and the lower end face of the rest area of the panel 11, the thickness D1 of each cutting tooth group 3 is smaller than the thickness D2 of the panel 11, the residual length of the root of the hair can be shortened to the greatest extent by utilizing the height difference, the working strength of the panel 11 can be ensured while the hair trimming effect is improved, and the bending deformation of the panel 11 in the use process is avoided.

In order to improve the overall appearance and assembly of the cutter head assembly, mounting seats 6 are respectively arranged at two ends of the panel 11, and each mounting seat 6 is respectively pressed above the panel 11 and fixedly connected with the supporting plate 12 into a whole. Install mount pad 6 additional respectively at panel 11's both ends, the whole assembly of tool bit subassembly of being convenient for and the whole aesthetic feeling of promotion tool bit subassembly to can also utilize mount pad 6 to play the guard action to moving sword 2, avoid external factor to cause the influence to moving the reciprocal swing of sword 2, guarantee the hair clipping performance of tool bit subassembly.

In the above embodiment, the swinging groove 5 is formed by using the inner surface of the panel 11 and the upper end surface of the support plate 12 to be spaced apart, so that the support plate 12 is fixed with the panel 11, and in the specific implementation, the present application provides two different embodiments:

example 1

The support plates 12 are provided with two pieces, the upper end face of each support plate 12 is straight, the guide blocks 13 with the width smaller than the width of the panel 11 are fixedly arranged on the inner surface of the panel 11, and the guide blocks 13 and the inner surface of the panel 11 can be fixed in an adhesive mode, a welding mode or the like. The two support plates 12 can be connected with the left side and the right side of the guide block 13 in a fitting way or in a spaced way, and the width of the guide block 13 is only required to be correspondingly increased or reduced. If the supporting plate 12 is connected with the side surface of the guide block 13 at intervals, the guide block 13 can also play a role in guiding the reciprocating swing of the movable knife 2, and in this embodiment, the supporting plate 12 is preferably connected with the guide block 13 at intervals. After the support plates 12 are fixed on the two sides of the guide block 13, the first interval H is formed between each support plate 12 and the two side edges of the panel 11, so as to prevent each support plate 12 from being too close to the edge of the panel 11 to block hairs, thereby improving the hair feeding efficiency.

After each supporting plate 12 is fixedly connected with the guide block 13, the upper end face of each supporting plate 12 and the inner surface of the panel 11 are arranged at intervals to form the swinging groove 5 between the upper end face of each supporting plate 12 and the inner surface of the panel 11, so that each cutting tooth 31 in the movable cutter 2 can pass through the swinging groove 5 and be arranged outside the supporting plate 12 to form unblocked open teeth, the hair feeding efficiency of the cutter head assembly can be improved, meanwhile, after the cutting teeth 31 in the hair driven cutter 2 and the panel 11 are cut off, broken hair can directly fall outside and cannot enter the static cutter 1, the broken hair is effectively prevented from interfering the reciprocating swing of the movable cutter 2, and the hair trimming performance of the cutter head assembly is ensured.

Of course, the connection of the support plate 12 to the panel 11 can also be achieved without the guide block 13, such as:

example 2

As shown in fig. 7 to 8, the support plates 12 are provided in two pieces and spaced apart by a distance smaller than the width of the panel 11 so that a first space H is formed between the outer surface of each support plate 12 and the edge of the panel 11; the first interval H can prevent the supporting plates 12 from being too close to the edge of the panel 11 to block hairs, thereby improving hair feeding efficiency. In order to facilitate the fixed connection of the support plates 12 and the panel 11, the two end edges of the upper end surface of each support plate 12 are respectively provided with a bump 14, so that a notch 15 is formed in the middle area of the upper end surface of the support plate 12. During assembly, the protruding blocks 14 at the edges of the two ends of the supporting plate 12 can be adhered to or welded to the inner surface of the panel 11, at this time, the swinging groove 5 is formed between the notch 15 on the upper end surface of the supporting plate 12 and the inner surface of the panel 11, and each cutting tooth 31 of the movable cutter 2 can pass through the swinging groove 5 and be arranged outside the supporting plate 12 to form unblocked open teeth, so that the hair feeding efficiency of the cutter head assembly can be improved, and meanwhile, after the cutting teeth 31 in the hair driven cutter 2 and the panel 11 are cut off, broken hair can directly fall outside and cannot enter the static cutter 1, so that the broken hair can be effectively prevented from interfering the reciprocating swing of the movable cutter 2, and the hair trimming performance of the cutter head assembly is ensured.

In order to improve the supporting strength of the two supporting plates 12 and prevent the interference of external factors on the reciprocating swing of the movable cutter 2, the connecting plates 16 are arranged at the lower ends of the two supporting plates 12, the two supporting plates 12 can be connected into a whole in a U shape by utilizing the connecting plates 16, the supporting strength of the two supporting plates 12 can be effectively improved, the interference of bending or dislocation on the reciprocating swing of the movable cutter 2 is avoided, and the hair trimming performance is ensured.

In the present application, the support plate 12 is preferably mounted by the technique of embodiment 1, and the support plate 12 is fixed by providing the guide blocks 13 on the inner surface of the panel 11. In order to facilitate the production, processing and assembly of the cutter head assembly, mounting holes 17 are respectively formed in the edges of the upper ends of the support plates 12, pin holes 18 are formed in corresponding positions on the guide blocks 13, then, bolts 19 are used for inserting the mounting holes 17 in one support plate 12, penetrating through the pin holes 18 in the guide blocks 13, and then, inserting the mounting holes 17 in the other support plate 12 to be connected and fixed with the guide blocks 13. In order to avoid interference of the pins 19 to the reciprocating swing of the movable blade 2, the distance between the two pins 19 of the fixed support plate 12 is larger than the reciprocating swing stroke of the movable blade 2.

Because the guide block 13 is fixedly connected to the inner surface of the panel 11, in order to enable the movable cutter 2 to be matched with the guide block 13, the movable cutter 2 comprises a movable cutter 21, the movable cutter 21 is provided with a U-shaped body 211, the width of the U-shaped body 211 is smaller than the interval distance between the two support plates 12 and larger than the width of the guide block 13, the U-shaped body 211 of the movable cutter 2 is arranged outside the guide block 13, the guide block 13 can guide and limit the movable cutter 2, the movable cutter 2 is prevented from deflecting or dislocating during reciprocating swing, and the hair trimming performance of the movable cutter 2 is ensured. The influence of the guide block 13, a plurality of cutting teeth 31 on the movable cutter 2 can only be arranged at two ends of the U-shaped body 211 and extend outwards horizontally, when the movable cutter 2 is assembled, the plurality of cutting teeth 31 at two sides of the U-shaped body 211 can penetrate through the swinging grooves 5 and are arranged outside the supporting plate 12 to form open teeth, the cutter head assembly is not blocked and isolated by the supporting plate 12, the hair feeding efficiency of the cutter head assembly can be improved, meanwhile, after the cutting teeth 31 in the hair driven cutter 2 and the panel 11 are cut off, broken hair can directly fall outside and cannot enter the static cutter 1, the broken hair is effectively prevented from interfering the reciprocating swinging of the movable cutter 2, and the hair cutting performance of the cutter head assembly is ensured. Secondly, the contact area of the movable cutter 2 and the panel 11 can be reduced to the greatest extent, the temperature rise of the movable cutter 2 and the static cutter 1 is reduced, and the use comfort of the cutter head assembly is improved.

To reduce frictional resistance between the U-shaped body 211 of the movable blade 2 and the guide block 13 or between the U-shaped body 211 and the support plate 12, point contact and/or line contact is formed between the U-shaped body 211 and the guide block 13 or the support plate 12 to prevent excessive temperature rise. In actual production and assembly, point contact is formed between the inner surface of the U-shaped body 211 and the side surface of the guide block 13, a bump is stamped on the two side walls of the U-shaped body 211, the bump is used for contacting with the side wall of the guide block 13, the contact area of the U-shaped body 211 and the guide block 13 is reduced, the temperature rise is reduced, the gap between the U-shaped body 211 and the guide block 13 is reduced, the shaking of the movable cutter 2 caused by overlarge gap during reciprocating swinging along the panel 11 is reduced, and the reliability of hair trimming is improved. Of course, a bump may be provided between the outer side surface of the U-shaped body 211 and the inner side surface of the support plate 12, and the specific arrangement may be determined according to the user's requirement, which is not limited further in this embodiment.

The reciprocating swing of the movable knife 2 is driven by an external driving mechanism, so that the movable knife 2 is driven by the external driving mechanism to swing reciprocally along the panel 11, the movable knife 2 further comprises a movable knife holder 22, a positioning column 221 is arranged on the upper end face of the movable knife holder 22, a linkage block 222 with a linkage groove 223 is arranged at the lower end of the movable knife holder 22, an opening groove 10 penetrating through the two support plates 12 is arranged on the U-shaped support plate 12, and the linkage block 222 is arranged in the opening groove 10. During assembly, the positioning column 221 on the movable cutter holder 22 is inserted into the positioning hole 212 at the bottom of the U-shaped body 211 in the movable cutter 2 to enable the movable cutter 21 to be synchronously linked with the movable cutter holder 22, the eccentric output shaft (not shown in the figure) of the driving mechanism is placed in the linkage groove 223 of the linkage block 222, and when the eccentric output shaft rotates along with the driving mechanism (namely, the rotating motor), the rotating motion can be changed into linear reciprocating motion to drive the linkage block 222 to swing left and right, so that the movable cutter holder 22 and the movable cutter 21 can swing back and forth along the panel 11.

In the hair trimming process, the cutting teeth 31 of the movable cutter 2 are matched with the cutting teeth 31 at the edge of the panel 11 to cut off the hair, in order to ensure that each cutting tooth 31 in the movable cutter 2 is always jointed with the cutting teeth 31 in the panel 11, elastic pieces 23 are arranged at two sides of the linkage block 222, and the elastic pieces 23 are pressed between the movable cutter seat 22 and the connecting piece 16 to ensure that each cutting tooth 31 in the movable cutter 21 is always jointed with the cutting tooth 31 in the panel 11; the elastic member 23 is a spring, one end of which is pressed against the movable blade holder 22, and the other end of which is pressed against the connecting piece 16 connecting the two support plates 12, so as to ensure that each cutting tooth 31 in the movable blade 21 is always kept in contact with each cutting tooth 31 at the edge of the panel 11. Of course, the elastic member 23 may also be configured as an elastic piece, for example, two elastic pieces protruding inwards are punched in the connecting piece 16, and the elastic pieces are pressed against the bottom of the movable blade holder 22, so that the cutting teeth 31 in the movable blade 21 and the cutting teeth 31 in the static blade 1 can be always kept in contact. However, since the spring is a standard, low cost and easy to obtain, the use of a spring is the preferred embodiment.

The assembly flow of the tool bit assembly comprises the following steps:

the first step: bonding or welding a guide block 13 at the bottom of the panel 11;

and a second step of: the U-shaped body 211 of the movable blade 21 is covered outside the guide block 13, and simultaneously, each cutting tooth 31 on two sides of the U-shaped body 211 is attached to each cutting tooth 31 on the edge of the inner surface of the panel 11;

and a third step of: inserting a positioning column 221 in the movable cutter seat 22 into a positioning hole 212 in the U-shaped body 211 of the movable cutter 21 to enable the movable cutter 21 to be in linkage connection with the movable cutter seat 22;

fourth step: placing the spring on a spring post at the bottom of the movable blade holder 22;

fifth step: covering the U-shaped supporting plate 12 outside the movable knife 2, and enabling a connecting sheet 16 at the bottom of the supporting plate 12 to press the spring;

sixth step: the two support plates 12 are connected and fixed with the guide block 13 by utilizing a pin shaft so that the static knife 1 and the movable knife 2 form a whole;

seventh step: the mounting seats 6 are clamped at two ends of the panel 11.

The fourth step can be moved to the final step for completion, and can be specifically adjusted according to actual conditions.

The above embodiments should not be construed as limiting the application, but any modifications based on the spirit of the application should be within the scope of the application.

Claims (10)

1. The combined cutter head assembly forming the open teeth comprises a static cutter (1) and a movable cutter (2), wherein a plurality of cutting teeth (31) which are arranged at intervals and are matched with each other to cut off hairs are respectively arranged on the static cutter (1) and the movable cutter (2); the static knife is characterized in that the static knife (1) comprises a panel (11) and at least one supporting plate (12) for supporting the panel (11), each cutting tooth (31) in the static knife (1) is arranged at the edge of at least one side of two sides of the panel (11), the supporting plate (12) is arranged below the panel (11) and is fixedly connected with the panel (11) and is vertical or inclined relative to the panel (11), and a first interval H is formed between the outer surface of the supporting plate (12) and the edge of one side of the panel (11) where the cutting tooth (31) is arranged; a swinging groove (5) is arranged between the supporting plate (12) and the panel (11), each cutting tooth (31) in the movable cutter (2) respectively penetrates through the swinging groove (5) and is arranged outside the supporting plate (12) to form open teeth, and at least each cutting tooth (31) in the movable cutter (2) is always attached to the end face of the panel (11) and can swing back and forth along the panel (11) under the driving of external force.

2. The combined cutter head assembly for forming open teeth according to claim 1, wherein a swinging groove (5) is formed between at least part of the upper end surface of the supporting plate (12) and the inner surface of the face plate (11) at intervals, the upper end surface of the supporting plate (12) forms the bottom surface of the swinging groove (5), and the distance D between the outer surface of each cutting tooth (31) in the movable cutter (2) and the upper end surface of the supporting plate (12) is not less than 0.1mm.

3. The combined cutter head assembly for forming open teeth according to claim 1, wherein a plurality of cutting teeth (31) arranged at the edges of both sides of the face plate (11) form a cutting tooth group (3), and the upper end face and the lower end face of the cutting tooth group (3) are positioned on different horizontal planes with the corresponding upper end face and lower end face in the face plate (11), so that the thickness D1 of the cutting tooth group (3) is smaller than the thickness D2 of the face plate (11).

4. The combined cutter head assembly for forming open teeth according to claim 1, wherein mounting seats (6) are respectively arranged at two ends of the panel (11), and each mounting seat (6) is respectively pressed above the panel (11) and fixedly connected with the supporting plate (12) into a whole.

5. The combined cutter head assembly for forming open teeth according to claim 2, wherein the supporting plates (12) are provided with two pieces, the upper end face of each supporting plate (12) is straight, the inner surface of the panel (11) is fixedly provided with a guide block (13) with the width smaller than that of the panel (11), and the two supporting plates (12) are respectively fixed at two sides of the guide block (13) so that a first interval H is formed between the outer surface of each supporting plate (12) and the edge of the panel (11); the upper end surface of each supporting plate (12) and the inner surface of the panel (11) are arranged at intervals to form a swinging groove (5).

6. The combination tool bit assembly for forming open teeth according to claim 2, wherein the support plates (12) are provided in two pieces and spaced apart by a distance less than the width of the face plate (11) such that a first spacing H is formed between the outer surface of each support plate (12) and the edge of the face plate (11); the two end edges of the upper end face of each supporting plate (12) are respectively provided with a bump (14), so that a notch (15) is formed in the middle area of the upper end face of each supporting plate (12), the upper end face of each bump (14) is fixedly connected with the inner surface of the panel (11), and a swinging groove (5) is formed between each notch (15) and the inner surface of the panel (11).

7. The combined cutter head assembly for forming open teeth according to claim 5, wherein connecting pieces (16) are arranged at the lower ends of the two supporting plates (12) to enable the two supporting plates (12) to be connected into a whole in a U shape, mounting holes (17) are respectively arranged at the edges of the upper ends of the two supporting plates (12), a bolt (19) penetrates through the mounting holes (17) on one supporting plate (12) and pin holes (18) arranged in the guide block (13) to fix the other supporting plate (12) at two sides of the guide block (13), and the distance between the two bolts (19) is larger than the reciprocating swing stroke of the movable cutter (2).

8. The combined cutter head assembly for forming open teeth according to claim 5, characterized in that the movable cutter (2) comprises a movable cutter blade (21), the movable cutter blade (21) is provided with a U-shaped body (211), the width of the U-shaped body (211) is smaller than the interval distance between the two support plates (12) and larger than the width of the guide block (13), the guide block (13) is arranged outside, and a plurality of cutting teeth (31) are arranged at two sides of the U-shaped body (211) in parallel at intervals and horizontally extend outwards through the swinging grooves (5) to be positioned outside the open teeth outside the support plates (12).

9. The open tooth forming modular cutter assembly as claimed in claim 8, wherein point and/or line contact is made between the U-shaped body (211) and the guide block (13) or support plate (12).

10. The combined cutter head assembly for forming open teeth according to claim 8, wherein the movable cutter (2) further comprises a movable cutter seat (22), a positioning column (221) is arranged on the upper end surface of the movable cutter seat (22), a linkage block (222) with a linkage groove (223) is arranged at the lower end of the movable cutter seat, elastic pieces (23) are arranged on two sides of the linkage block (222), and the positioning column (221) is inserted into a positioning hole (212) arranged at the bottom of the U-shaped body (211) to enable the movable cutter blade (21) to be synchronously linked with the movable cutter seat (22); the elastic piece (23) is pressed between the movable cutter seat (22) and the connecting piece (16) to enable each cutting tooth (31) in the movable cutter blade (21) to be always attached to the cutting tooth (31) in the panel (11); the U-shaped supporting plates (12) are provided with open grooves (10) penetrating through the two supporting plates (12), and the linkage blocks (222) are arranged in the open grooves (10) and are connected with the output shafts of the driving parts in a linkage way.