Combined cutter head assembly forming open teeth

Abstract

The present invention relates to a combined cutter head assembly that forms open teeth, characterized in that the static cutter includes a panel and at least one support plate, the support plate is placed below the panel and is vertical or inclined relative to the panel, so that the outer surface of the support plate forms a first gap with the edge of the panel; a swinging groove is provided between the support plate and the panel, and the cutting teeth of the movable cutter pass through the swinging groove and are placed outside the support plate to form open teeth. The beneficial effect of the present invention is that the support plate is placed below the panel and a first gap is formed between the outer surface of the support plate and the edge of the panel, and the outer surface of the support plate away from the edge of the panel will not form an obstruction to the hair, which accelerates the entry of the hair into the cutting groove and improves the hair trimming efficiency. Secondly, each cutting tooth in the movable cutter passes through the swinging groove and is placed outside the support plate to form an open tooth. When in use, each cutting tooth is not blocked or isolated by the support plate, and the trimming efficiency is higher, which is more conducive to the removal of broken hair, and avoids the accumulation of broken hair in the static cutter and affecting the reciprocating swing of the movable cutter.

Description

Technical Field

[0001] The present invention relates to a hair trimming device, and more particularly to a cutter head assembly which is assembled to form open teeth, and is mainly used in the field of hair trimming tools. Background Art

[0002] Hair trimming tools mainly include two transmission structures: rotary and reciprocating. The reciprocating cutter head assembly is popular among users due to its strong power.

[0003] Chinese patent CN108202346A discloses a reciprocating hair cutting device, comprising a long strip-shaped static blade (1), the static blade (1) comprising a long strip body (1-1) and a bent portion (1-2) bent along the long strip body (1-1), so that the static blade forms a semi-enclosed shape. To facilitate the entry of hair into the static blade (1), a beard inlet groove is provided on the long strip body (1-1) and the bent portion (1-2), respectively, so that the beard inlet grooves are interconnected to form an L-shape. Although the L-shaped beard inlet groove relatively increases the cross-sectional area of the beard inlet groove, during assembly, the L-shaped beard inlet groove completely wraps the moving blade inside the static blade (1). However, when the length of beard and other hair is greater than 3 mm, it will be affected by external factors such as oil secreted by the skin, so that the beard and other hair will form a curled shape. When hair is trimmed, the bent portion (1-2) will block the curled hair, reducing the efficiency of hair entry. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a combined cutter head assembly that can form open teeth. The cutter head assembly is not only convenient for production, processing and assembly, but also can improve the hair feeding efficiency and improve the hair trimming performance.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is to form an open-tooth combined cutter head assembly, including a stationary knife and a movable knife, wherein a plurality of cutting teeth arranged at intervals and cooperating with each other to cut hair are respectively provided on the stationary knife and the movable knife; the stationary knife includes a panel and at least one supporting plate supporting the panel, and a plurality of cutting teeth arranged at the edges of both sides of the panel constitute a cutting tooth group, and the upper end surface and the lower end surface of the cutting tooth group are on different horizontal planes from the corresponding upper end surface and lower end surface of the panel, so that the thickness D1 of the cutting tooth group is less than the thickness D2 of the panel; the supporting plate is placed below the panel and is connected and fixed to the panel and is vertical or inclined relative to the panel, so that the outer surface of the supporting plate forms a first gap H with the edge of one side of the panel where the cutting teeth are provided, and a swing groove is formed between at least a part of the upper end surface of the supporting plate and the inner surface of the panel, and the upper end surface of the supporting plate forms the bottom surface of the swing groove;

[0006] Among them, each cutting tooth in the movable knife passes through the swing groove and is placed outside the support plate to form an open tooth, so that at least each cutting tooth in the movable knife always keeps in contact with the end face of the panel, and the distance D between the outer surface of each cutting tooth in the movable knife and the upper end face of the support plate is not less than 0.1mm, and it can swing back and forth along the panel under the drive of external force.

[0007] Preferably, mounting seats are provided at both ends of the panel, and each mounting seat is pressed onto the panel and fixedly connected to the support plate as a whole.

[0008] Preferably, two support plates are provided and the upper end surface of each support plate is straight, a guide block with a width smaller than the width of the panel is fixedly installed on the inner surface of the panel, and the two support plates are respectively fixed on both sides of the guide block to form a first gap between the outer surface of each support plate and the edge of the panel; the upper end surface of each support plate is spaced apart from the inner surface of the panel to form a swing groove.

[0009] Preferably, two support plates are provided and spaced apart, and the spacing distance is smaller than the width of the panel so that a first spacing is formed between the outer surface of each support plate and the edge of the panel; protrusions are respectively provided at the two end edges of the upper end surface of each support plate, so that a notch is formed in the middle area of the upper end surface of the support plate, and the upper end surface of the protrusion is connected and fixed to the inner surface of the panel, and a swing groove is formed between the notch and the inner surface of the panel.

[0010] Preferably, a connecting plate is provided at the lower end of the two support plates, so that the two support plates are connected as a whole in a U shape, and a mounting hole is provided at the upper edge of each support plate. The pin passes through the mounting hole on one of the support plates and the pin hole provided in the guide block to fix the other support plate to both sides of the guide block, and the distance between the two pins is greater than the reciprocating swing stroke of the movable knife.

[0011] Preferably, the movable knife includes a movable blade having a U-shaped body. The width of the U-shaped body is smaller than the spacing between the two support plates and larger than the width of the guide block and is placed outside the guide block. A plurality of cutting teeth are arranged side by side on both sides of the U-shaped body and extend horizontally outward through the swinging groove to form open teeth outside each support plate.

[0012] Preferably, point contact and / or line contact is formed between the U-shaped body and the guide block or the support plate.

[0013] Preferably, the movable knife also includes a movable knife seat, a positioning column is provided on the upper end surface of the movable knife seat, a linkage block with a linkage groove is provided at the lower end, and elastic members are provided on both sides of the linkage block. The positioning column is inserted into the positioning hole provided at the bottom of the U-shaped body to synchronize the movable blade and the movable knife seat; the elastic member is pressed between the movable knife seat and the connecting piece so that the cutting teeth in the movable blade always keep in contact with the cutting teeth in the panel; an open groove running through the two support plates is provided on the U-shaped support plate, and the linkage block is placed in the open groove and is linked to the output shaft of the driving component.

[0014] The beneficial effect of the present invention is that the support plate is positioned below the panel, creating a first gap between the outer surface of the support plate and the edge of the panel. During hair trimming, the outer surface of the support plate away from the edge of the panel does not obstruct hair, thereby accelerating the entry of hair into the cutting groove and improving hair trimming efficiency. Furthermore, a swinging groove is provided between the support plate and the panel, through which the cutting teeth of the movable blade pass, forming open teeth outside the support plate. During use, the cutting teeth of the movable blade are not obstructed or isolated by the support plate, resulting in higher hair trimming efficiency. Furthermore, this facilitates the removal of broken hair, preventing it from accumulating in the stationary blade and affecting the reciprocating swing of the movable blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional structural diagram of a combined cutter head assembly with open teeth according to an embodiment of the present invention

[0016] Figure 2 A transverse cross-sectional view of a combined cutter head assembly forming open teeth according to an embodiment of the present invention

[0017] Figure 3 A longitudinal cross-sectional view of a combined cutter head assembly with open teeth according to an embodiment of the present invention

[0018] Figure 4 A side view of the structure of a combined cutter head assembly with open teeth according to an embodiment of the present invention

[0019] Figure 5 Schematic diagram of the three-dimensional assembly of the movable knife in the embodiment of the present invention

[0020] Figure 6 A three-dimensional structural diagram of the support plate in an embodiment of the present invention

[0021] Figure 7 This is a side view assembly diagram of the second embodiment of the support plate in the embodiment of the present invention

[0022] Figure 8 A three-dimensional structural diagram of a second embodiment of a support plate according to an embodiment of the present invention DETAILED DESCRIPTION

[0023] The embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0024] like Figure 1-8As shown, the present invention provides a modular cutter head assembly with open teeth, comprising a stationary blade 1 and a movable blade 2. Each of the stationary blades 1 and 2 is provided with a plurality of spaced-apart cutting teeth 31 that cooperate to cut hair. A cutting groove 4 is formed between adjacent cutting teeth 31. Hairs entering the cutting groove 4 are cut by the cooperating cutting teeth 31 of the stationary blades 1 and 2. To facilitate the entry of curly hair into the cutting groove 4 and improve hair feeding efficiency, the stationary blade 1 includes a faceplate 11 that contacts the skin and at least one support plate 12 that supports the faceplate 11. The cutting teeth 31 of the stationary blade 1 are positioned along at least one edge of both sides of the faceplate 11. The support plate 12 is placed below the panel 11 and is fixedly connected to the panel 11 and is perpendicular or inclined relative to the panel 11, so that a first gap H is formed between the outer surface of the support plate 12 and the side edge of the panel 11 where the cutting teeth 31 are provided. The support plate 12 is placed below the panel 11 so that the first gap H is formed between the outer surface of the support plate 12 and the edge of the panel 11 (which can also be regarded as the tooth tip of the cutting tooth 31). When trimming hair, the outer surface of the support plate 12 away from the edge of the panel 11 (i.e., the tooth tip of the cutting tooth 31) will not form an obstruction to the hair, thereby accelerating the entry of the hair into the cutting groove 4 and improving the hair trimming efficiency. In actual production, the larger the distance of the first gap H, the less obstruction or restriction on the hair, and the more quickly and unimpeded the hair can enter the cutting groove 4 between adjacent cutting teeth 31 in the static blade 1, thereby improving the hair feeding efficiency. However, due to the limitation of the overall width of the cutter head assembly, the first gap H cannot be increased indefinitely. Therefore, when setting the first interval H, the relatively shorter cutting tooth 31 of the stationary knife 1 and the movable knife 2 is used as a reference (the cutting teeth 31 of the stationary knife 1 and the movable knife 2 have different lengths), and the interval distance of the first interval H is not less than the shorter cutting tooth 31.

[0025] To facilitate the cooperation between the cutting teeth 31 of the movable blade 2 and the cutting teeth 31 of the stationary blade 1 to cut hair, a swinging groove 5 is provided between the support plate 12 and the panel 11. The cutting teeth 31 of the movable blade 2 are respectively passed through the swinging groove 5 and placed outside the support plate 12 to form open teeth. When the cutting teeth 31 of the movable blade 2 are passed through the swinging groove 5 and placed outside the support plate 12, the cutting teeth 31 of the movable blade 2 and the cutting teeth 31 of the stationary blade 1 form open teeth, which are not blocked or isolated by the support plate 12, thereby improving the hair cutting efficiency. In addition, it is more conducive to the removal of broken hair, preventing broken hair from accumulating in the stationary blade 1 and affecting the reciprocating swing of the movable blade 2.

[0026] When the movable blade 2 swings back and forth along the inner surface of the panel 11, frictional resistance is generated between the movable blade 2 and the panel 11, increasing the temperature rise of the movable blade 2 and the panel 11, and correspondingly increasing the surface temperature of the movable blade 2 and the stationary blade 1, which may burn the skin. To this end, at least each cutting tooth 31 in the movable blade 2 always maintains contact with the inner surface of the panel 11 and can swing back and forth along the panel 11 under the drive of an external force. Only by ensuring that each cutting tooth 31 in the movable blade 2 always maintains contact with each cutting tooth 31 on the panel 11, the contact area between the movable blade 2 and the stationary blade 1 is relatively reduced, which can effectively control the temperature rise between the stationary blade 1 and the movable blade 2, reduce the surface temperature of the stationary blade 1 and the movable blade 2, and improve the user comfort of the blade assembly.

[0027] Since the cutting teeth 31 of the movable blade 2 respectively pass through the swinging groove 5 and cooperate with the cutting teeth 31 in the panel 11 to cut hair, to optimize the structure of the swinging groove 5 and facilitate production, processing, and assembly, the swinging groove 5 is formed by the inner surface of the panel 11 and at least a portion of the upper end surface of the support plate 12, with the upper end surface of the support plate 12 forming the groove bottom surface of the swinging groove 5. During actual assembly, to prevent hair from entering the static blade 1 or causing hair jamming, the spacing 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 support plate 12, when the cutting teeth 31 of the movable blade 2 pass through the swinging groove 5 and are positioned outside the support plate 12 is not less than 0.1 mm. If the spacing D is larger, such as greater than 1 mm, hair may easily enter the inner side of the support plate 12 and cause hair pulling, or severed hair fragments may fall into the support plate 12 and affect the reciprocating swing of the movable blade 2. If the setting is too small, for example, less than 0.05 mm, hairs are easily stuck between the cutting teeth 31 and the upper end surface, causing a pulling pain to the skin when the movable knife 2 swings back and forth, thereby reducing the comfort of using the knife head assembly.

[0028] To prevent the panel 11 from bending and deforming during use, thereby affecting hair trimming performance, the panel 11 is generally thicker than 0.5 mm. While this increases the working strength of the panel 11, it also increases the length of hair roots remaining, affecting the hair trimming effect. To improve the hair trimming effect, a plurality of cutting teeth 31 are provided at the edges of the panel 11 to form a cutting tooth group 3. The upper and lower end surfaces of the cutting tooth group 3 are located at different horizontal planes from the corresponding upper and lower end surfaces of the panel 11, so that the thickness D1 of the cutting tooth group 3 is less than the thickness D2 of the panel 11. The upper and lower end surfaces of the cutting tooth groups 3 at the edges of the panel 11 are located at different horizontal planes from the upper and lower end surfaces of the remaining areas of the panel 11, so that the thickness D1 of each cutting tooth group 3 is less than the thickness D2 of the panel 11. This height difference can be used to minimize the length of hair roots remaining, thereby improving the hair trimming effect while ensuring the working strength of the panel 11 and preventing the panel 11 from bending and deforming during use.

[0029] To enhance the overall aesthetics and assembly of the cutter head assembly, mounting blocks 6 are provided at each end of the panel 11. Each mounting block 6 is pressed against the panel 11 and fixedly connected to the support plate 12. The addition of mounting blocks 6 at each end of the panel 11 facilitates the overall assembly of the cutter head assembly and enhances its overall aesthetics. Furthermore, the mounting blocks 6 protect the movable blade 2, preventing external factors from affecting the reciprocating motion of the movable blade 2 and ensuring the hair trimming performance of the cutter head assembly.

[0030] In the above embodiment, the swing groove 5 is formed by the inner surface of the panel 11 and the upper end surface of the support plate 12 being spaced apart, so as to facilitate the fixation of the support plate 12 and the panel 11. In specific implementation, the present application provides two different implementation schemes:

[0031] Example 1

[0032] The support plates 12 are provided with two pieces, and the upper end surface of each support plate 12 is straight. A guide block 13 having a width less than that of the panel 11 is fixedly mounted on the inner surface of the panel 11. The guide block 13 and the inner surface of the panel 11 can be fixed by bonding, welding, or the like. The two support plates 12 can be connected to the left and right sides of the guide block 13 in a fitted manner or spaced apart, simply by increasing or reducing the width of the guide block 13 accordingly. If the support plates 12 and the sides of the guide block 13 are spaced apart, the guide block 13 can also guide the reciprocating swing of the movable blade 2. In this embodiment, the support plates 12 and the guide blocks 13 are preferably spaced apart. After the support plates 12 are fixed to both sides of the guide blocks 13, a first interval H is formed between each support plate 12 and the edge of the panel 11 on both sides to prevent each support plate 12 from being too close to the edge of the panel 11 and thereby blocking the hair, thereby improving the hair feeding efficiency.

[0033] After each support plate 12 is connected and fixed to the guide block 13, the upper end surface of each support plate 12 is spaced apart from the inner surface of the panel 11 so that a swing groove 5 is formed between the upper end surface of the support plate 12 and the inner surface of the panel 11, so that each cutting tooth 31 in the movable knife 2 can pass through the swing groove 5 and be placed outside the support plate 12 to form an unobstructed open tooth, which not only improves the hair feeding efficiency of the cutter head assembly, but also, after the hair is cut off by the passive knife 2 and the cutting teeth 31 in the panel 11, the broken hair will fall directly to the outside and will not enter the stationary knife 1, effectively preventing the broken hair from interfering with the reciprocating swing of the movable knife 2, thereby ensuring the hair trimming performance of the cutter head assembly.

[0034] Of course, the connection between the support plate 12 and the panel 11 can also be achieved without the guide block 13, such as:

[0035] Example 2

[0036] like Figure 7-8As shown, two support plates 12 are spaced apart, with the spacing being less than the width of the panel 11, forming a first gap H between the outer surface of each support plate 12 and the edge of the panel 11. This first gap H prevents each support plate 12 from being too close to the edge of the panel 11 and thereby blocking hair, thereby improving hair feeding efficiency. To facilitate the secure connection between the support plates 12 and the panel 11, protrusions 14 are provided at both ends of the upper end surface of each support plate 12, and a notch 15 is formed in the middle area of the upper end surface of the support plate 12. During assembly, the protrusions 14 at the two end edges of the support plate 12 can be glued or welded to the inner surface of the panel 11. At this time, a swing groove 5 is formed between the notch 15 on the upper end surface of the support plate 12 and the inner surface of the panel 11. The cutting teeth 31 of the movable knife 2 can pass through the swing groove 5 and be placed outside the support plate 12 to form unobstructed open teeth, which not only improves the hair feeding efficiency of the cutter head assembly, but also, after the hair is cut off by the passive knife 2 and the cutting teeth 31 in the panel 11, the broken hair will fall directly to the outside and will not enter the static knife 1, effectively preventing the broken hair from interfering with the reciprocating swing of the movable knife 2, thereby ensuring the hair trimming performance of the cutter head assembly.

[0037] In order to improve the supporting strength of the two support plates 12 and prevent external factors from interfering with the reciprocating swing of the movable blade 2, a connecting piece 16 is provided at the lower end of the two support plates 12. The connecting piece 16 can be used to connect the two support plates 12 into one in a U shape, which can effectively improve the supporting strength of the two support plates 12, avoid bending or misalignment that interferes with the reciprocating swing of the movable blade 2, and ensure hair trimming performance.

[0038] In the present application, the installation of the support plate 12 preferably adopts the technical solution of the above-mentioned embodiment 1, and the support plate 12 is fixed by setting a guide block 13 on the inner surface of the panel 11. In order to facilitate the production, processing and assembly of the cutter head assembly, a mounting hole 17 is provided at the upper edge of each support plate 12, and a pin hole 18 is provided at a corresponding position on the guide block 13. Then, a pin 19 is inserted into the mounting hole 17 on one of the support plates 12, and after passing through the pin hole 18 on the guide block 13, it is inserted into the mounting hole 17 of the other support plate 12 and connected and fixed to the guide block 13. In order to prevent the pin 19 from interfering with the reciprocating swing of the movable knife 2, the distance between the two pins 19 fixing the support plate 12 is greater than the reciprocating swing stroke of the movable knife 2.

[0039] Since a guide block 13 is fixedly connected to the inner surface of the panel 11, in order to adapt the movable knife 2 to the guide block 13, the movable knife 2 includes a movable blade 21, and the movable blade 21 has a U-shaped body 211. The width of the U-shaped body 211 is less than the distance between the two support plates 12 and greater than the width of the guide block 13 and is placed outside the guide block 13. When the U-shaped body 211 of the movable knife 2 is placed outside the guide block 13, the guide block 13 can guide and limit the movable knife 2, preventing the movable knife 2 from deflecting or dislocating during reciprocating swinging, thereby ensuring the hair trimming performance of the movable knife 2. Due to the influence of the guide block 13, the several cutting teeth 31 on the movable blade 2 can only be set at the two ends of the U-shaped body 211 and extend horizontally outward. When the movable blade 2 is assembled, the several cutting teeth 31 on both sides of the U-shaped body 211 can pass through the swing groove 5 and be placed outside the support plate 12 to form open teeth. Without being blocked or isolated by the support plate 12, this not only improves the hair feeding efficiency of the cutter head assembly, but also, after the hair is cut by the cutting teeth 31 in the movable blade 2 and the panel 11, the broken hair will fall directly to the outside and will not enter the static blade 1, effectively preventing the broken hair from interfering with the reciprocating swing of the movable blade 2 and ensuring the hair cutting performance of the cutter head assembly. Secondly, it can also minimize the contact area between the movable blade 2 and the panel 11, reduce the temperature rise of the movable blade 2 and the static blade 1, and improve the user comfort of the cutter head assembly.

[0040] To reduce frictional resistance between the U-shaped body 211 of the movable blade 2 and the guide block 13 or the support plate 12, thereby preventing excessive temperature rise, point and / or line contact is established between the U-shaped body 211 and the guide block 13 or the support plate 12. In actual production and assembly, point contact is established between the inner surface of the U-shaped body 211 and the side surface of the guide block 13. A protrusion is stamped into the side walls of the U-shaped body 211, which contacts the side walls of the guide block 13. This reduces the contact area between the U-shaped body 211 and the guide block 13, lowering temperature rise while also reducing the gap between the U-shaped body 211 and the guide block 13. This reduces shaking of the movable blade 2 when it reciprocates along the panel 11 due to the large gap, thereby improving hair trimming reliability. Alternatively, a protrusion may be provided between the outer surface of the U-shaped body 211 and the inner surface of the support plate 12. The specific configuration can be determined based on user requirements and is not limited in this embodiment.

[0041] The reciprocating swing of the movable blade 2 requires the assistance of an external driving mechanism. To facilitate the external driving mechanism to drive the movable blade 2 to swing back and forth along the panel 11, the movable blade 2 also includes a movable blade holder 22. A positioning post 221 is provided on the upper end surface of the movable blade holder 22, and a linkage block 222 with a linkage slot 223 is provided at the lower end. An open slot 10 is provided on the U-shaped support plate 12, which passes through the two support plates 12, and the linkage block 222 is placed in the open slot 10. During assembly, the positioning post 221 on the movable blade holder 22 is inserted into the positioning hole 212 at the bottom of the U-shaped body 211 of the movable blade 2 so that the movable blade 21 and the movable blade holder 22 are synchronously linked. The eccentric output shaft of the driving mechanism (not shown in the figure) is placed in the linkage slot 223 of the linkage block 222. When the eccentric output shaft rotates with the driving mechanism (i.e., the rotary motor), the rotational motion is converted into a linear reciprocating motion, driving the linkage block 222 to swing left and right, thereby achieving reciprocating swing of the movable blade holder 22 and the movable blade 21 along the panel 11.

[0042] During the hair trimming process, the cutting teeth 31 of the movable blade 2 need to cooperate with the cutting teeth 31 at the edge of the panel 11 to cut the hair. To ensure that the cutting teeth 31 of the movable blade 2 always keep in contact with the cutting teeth 31 in the panel 11, elastic members 23 are provided on both sides of the linkage block 222. The elastic members 23 are pressed between the movable blade holder 22 and the connecting piece 16 to ensure that the cutting teeth 31 of the movable blade 21 always keep in contact with the cutting teeth 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 is pressed against the connecting piece 16 connecting the two support plates 12, thereby ensuring that the cutting teeth 31 of the movable blade 21 always keep in contact with the cutting teeth 31 at the edge of the panel 11. Of course, the elastic member 23 can also be configured as a spring sheet, for example, by stamping two inwardly protruding spring sheets from the connecting piece 16 and using the spring sheets to press against the bottom of the movable blade holder 22, thereby ensuring that the cutting teeth 31 of the movable blade 21 and the cutting teeth 31 of the stationary blade 1 are always in contact with each other. However, since springs are standard parts, low in cost, and readily available, the use of springs is the preferred embodiment.

[0043] Assembly process of this cutter head assembly:

[0044] Step 1: Glue or weld the guide block 13 to the bottom of the panel 11;

[0045] Step 2: Place the U-shaped body 211 of the movable blade 21 outside the guide block 13, and at the same time, make the cutting teeth 31 on both sides of the U-shaped body 211 fit with the cutting teeth 31 at the edge of the inner surface of the panel 11;

[0046] Step 3: Insert the positioning post 221 in the movable blade holder 22 into the positioning hole 212 in the U-shaped body 211 of the movable blade 21 to connect the movable blade 21 to the movable blade holder 22;

[0047] Step 4: Place the spring on the spring column at the bottom of the movable knife seat 22;

[0048] Step 5: Place the U-shaped support plate 12 on the outside of the movable knife 2, and make the connecting piece 16 at the bottom of the support plate 12 squeeze the spring;

[0049] Step 6: Use the pin to connect and fix the two support plates 12 and the guide block 13 so that the static knife 1 and the movable knife 2 form a whole;

[0050] Step 7: Attach the mounting base 6 to both ends of the panel 11.

[0051] The fourth step can also be moved to the last step and can be adjusted according to actual conditions.

[0052] 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. A combined cutter head assembly forming an open tooth, comprising a stationary cutter (1) and a movable cutter (2), wherein the stationary cutter (1) and the movable cutter (2) are respectively provided with a plurality of cutting teeth (31) arranged at intervals and cooperating with each other to cut hair; characterized in that The stationary knife (1) comprises a panel (11) and at least one supporting plate (12) supporting the panel (11); a plurality of cutting teeth (31) arranged at the edges of both sides of the panel (11) form a cutting tooth group (3); the upper end face and the lower end face of the cutting tooth group (3) are on different horizontal planes from the corresponding upper end face and lower end face of 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 supporting plate (12) is placed below the panel (11) and is connected and fixed to the panel (11) and is vertical or inclined relative to the panel (11), so that the outer surface of the supporting plate (12) and the side edge of the panel (11) where the cutting teeth (31) are arranged form a first interval H, and a swing groove (5) is formed between at least a part of the upper end face of the supporting plate (12) and the inner surface of the panel (11), and the upper end face of the supporting plate (12) forms the groove bottom surface of the swing groove (5); The cutting teeth (31) in the movable blade (2) are respectively passed through the swinging groove (5) and placed outside the support plate (12) to form open teeth, so that at least the cutting teeth (31) in the movable blade (2) are always kept in contact with the end surface of the panel (11), and the spacing D between the outer surface of each cutting tooth (31) in the movable blade (2) and the upper end surface of the support plate (12) is not less than 0.1 mm, and the movable blade can swing back and forth along the panel (11) under the driving of an external force.

2. The combined cutter head assembly for forming open teeth according to claim 1, characterized in that Mounting seats (6) are respectively provided at both ends of the panel (11), and each mounting seat (6) is respectively pressed above the panel (11) and fixedly connected to the support plate (12) as a whole.

3. The combined cutter head assembly for forming open teeth according to claim 1, characterized in that The support plates (12) are provided with two pieces and the upper end surface of each support plate (12) is straight. A guide block (13) having a width smaller than the width of the panel (11) is fixedly installed on the inner surface of the panel (11). The two support plates (12) are respectively fixed on both sides of the guide block (13) so that a first gap H is formed between the outer surface of each support plate (12) and the edge of the panel (11); the upper end surface of each support plate (12) and the inner surface of the panel (11) are spaced apart to form a swing groove (5).

4. The combined cutter head assembly for forming open teeth according to claim 1, characterized in that The support plates (12) are provided with two pieces and are spaced apart. The spacing distance is smaller than the width of the panel (11), so that a first spacing H is formed between the outer surface of each support plate (12) and the edge of the panel (11); a protrusion (14) is respectively provided at the edges of both ends of the upper end surface of each support plate (12), so that a notch (15) is formed in the middle area of the upper end surface of the support plate (12), the upper end surface of the protrusion (14) is connected and fixed to the inner surface of the panel (11), and a swing groove (5) is formed between the notch (15) and the inner surface of the panel (11).

5. The combined cutter head assembly for forming open teeth according to claim 3 or 4, characterized in that A connecting piece (16) is provided at the lower end of the two support plates (12), so that the two support plates (12) are connected as a whole in a U shape. A mounting hole (17) is provided at the upper edge of each support plate (12). A latch (19) passes through the mounting hole (17) on one of the support plates (12) and a pin hole (18) provided in the guide block (13) to fix the other support plate (12) on both sides of the guide block (13). The distance between the two latches (19) is greater than the reciprocating swing stroke of the movable knife (2).

6. The combined cutter head assembly for forming open teeth according to claim 1, characterized in that The movable knife (2) includes a movable blade (21), which has a U-shaped body (211). The width of the U-shaped body (211) is less than the distance between the two support plates (12) and greater than the width of the guide block (13) and is located outside the guide block (13). A plurality of cutting teeth (31) are arranged side by side at intervals on both sides of the U-shaped body (211) and extend outward in a horizontal shape through the swing groove (5) and are located outside each support plate (12) to form open teeth.

7. The open-toothed combined cutter head assembly according to claim 6, characterized in that Point contact and / or line contact is formed between the U-shaped body (211) and the guide block (13) or the support plate (12).

8. The open-toothed combined cutter head assembly according to claim 1, characterized in that The movable blade (2) further comprises a movable blade seat (22), wherein a positioning column (221) is provided on the upper end surface of the movable blade seat (22), and a linkage block (222) with a linkage groove (223) is provided at the lower end thereof, and elastic members (23) are provided on both sides of the linkage block (222); the positioning column (221) is inserted into a positioning hole (212) provided at the bottom of the U-shaped body (211) so that the movable blade (21) and the movable blade seat (22) are synchronously linked; the elastic member (23) is pressed between the movable blade seat (22) and the connecting piece (16) so that each cutting tooth (31) in the movable blade (21) always keeps in contact with the cutting tooth (31) in the panel (11); an opening groove (10) penetrating the two supporting plates (12) is provided on the U-shaped support plate (12); the linkage block (222) is placed in the opening groove (10) and is linked to the output shaft of the driving component.

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