A lettering knife head assembly and a lettering knife
Through the integrated tapered housing and support seat articulation structure, the problems of unstable assembly and poor coaxiality of the existing lettering knife head are solved, achieving higher portrayal accuracy and use safety.
Patent Information
- Application Number
- CN202111549846.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-12-17
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2041-12-17
AI Technical Summary
The head shell of the existing lettering knife is split, which affects the overall beauty, and the coaxiality of the movable blade is poor during assembly, which causes the movable blade to easily tilt to one side or slide out during use, affecting the accuracy of the movable blade and increasing the skin. Cut risk.
Adopt an integrated tapered housing design with a support seat and an articulated structure to ensure the coaxiality of the movable knife, static knife, movable knife seat and swing rod during assembly, and reduce swing noise through springs and torsion spring columns to improve Assembly stability.
It improves the overall beauty and portrayal accuracy of the lettering knife, avoids the movable blade bias or slide out, and improves the use safety and portrayal efficiency.
Smart Images
Figure CN114131665B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a cutting tool for carving, trimming and engraving, and more particularly to a cutting tool head assembly and a cutting tool which can be used for carving patterns or words on head hair. Background Art
[0002] With the continuous development of society and the continuous improvement of people's living standards, individuals are paying more and more attention to their appearance, especially in hairstyles. More and more young parents will carve some patterns or words on their own or their children's hairstyles to show their personality.
[0003] As the existing hair clippers have a thick body and a wide blade, it is not easy to carve some complicated patterns or words on the hairstyle. In order to meet the needs of hairdressing institutions, hairdressing equipment manufacturers have also launched a carving knife specially used for carving patterns or words. The blade shell of the carving knife is conical, which is convenient for fingers to grasp, so that hairdressers can operate more accurately to deal with the carving of complex patterns or words.
[0004] Although the existing lettering knives can meet the requirements of accurately carving various patterns and texts on hairstyles, the outer shell of the lettering knife head is basically a split shell for the convenience of production, processing and assembly, which not only affects the overall appearance of the lettering knife, but also the coaxiality of the moving blade, the stationary blade, the moving blade seat, the swing rod and the driving mechanism is poor during assembly. When in use, when the moving blade is driven by the driving mechanism, the swing rod and the moving blade seat to swing left and right along the stationary blade, the moving blade will excessively deviate to one side of the stationary blade, or even slide out of the side of the stationary blade, which seriously affects the accurate carving of the knife head and even creates a safety risk of cutting the skin on the head. Summary of the invention
[0005] In order to solve the above technical problems, the present invention provides a carving knife head and a carving knife, which can not only effectively improve the overall appearance of the knife head, but also ensure the coaxiality of the installation of various components, thereby preventing the movable blade from deviating to one side or sliding out of the stationary blade when the movable blade swings back and forth along the stationary blade, thereby improving the precision of the carving knife head, preventing the carving knife head from cutting the skin, and improving safety in use.
[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is a lettering knife head assembly, including a stationary knife, a moving knife, a moving knife seat, a rocker arm and a shell, the moving knife seat is buckled on the moving knife so that the moving knife and the stationary knife fit together, the rocker arm is placed in the shell and its two ends are respectively connected to the moving knife seat and the driving mechanism; it is characterized in that the shell is closed all around and forms an integral cone so that a cavity with two ends communicating is formed in the shell, the support seat is detachably fixed in the cavity of the shell, and one end of the support seat is fixedly connected to the stationary knife arranged outside the shell; the rocker arm is hinged at the center of the support seat, one end is linked to the moving knife seat so that the moving knife seat, the moving knife and the stationary knife are on the same axis, and the other end is synchronously linked with the driving mechanism.
[0007] Preferably, a limit plate is provided on the support seat, and both ends of the limit plate are connected to the support seat as a whole through the side plates; an axial hole is provided on the limit plate, and a positioning seat with a pin hole is provided below the limit plate; a hinge column with both ends protruding from the rocker is provided in the middle of the rocker, and a hinge hole is provided in the hinge column, and the hinge shaft passes through the axial hole on the limit plate and the hinge hole in the hinge column and is inserted into the pin hole of the positioning seat to hinge and fix the rocker to the support seat.
[0008] Preferably, a spring is disposed on the outer sleeve of the positioning seat, one end of the spring is pressed against the lower end surface of the swing rod, and the other end is pressed against the support seat.
[0009] Preferably, a torsion spring column and a torsion arm groove are provided on the support seat, and a double torsion spring is sleeved outside the torsion spring column, one set of torsion arms is placed in the torsion arm groove, and the other end of the torsion arm is placed outside the shell and pressed on the moving knife seat so that the moving knife and the stationary knife end face fit together.
[0010] Preferably, a guide rail for limiting the horizontal displacement of the support seat and an upper limit platform and a lower limit platform for limiting the vertical displacement of the support seat are provided on the inner wall of the housing cavity of the shell; a guide groove and a lower limit block are provided on the support seat, and the guide groove is inserted into the guide rail so that the support seat is horizontally limited and fixed in the shell, and the limit plate and the lower limit block are respectively fitted with the corresponding upper limit platform and lower limit platform so that the support seat is vertically limited and fixed in the shell.
[0011] Preferably, a clamping seat is provided at one end port where the shell is connected to the body, and the clamping seat is fixedly connected to the shell while its inner end surface presses against the support seat to form an axial connection and fixation between the support seat and the shell.
[0012] Preferably, a plurality of inner buckle blocks are provided on the inner side wall of the cavity at one end port where the shell is connected to the fuselage, a screw hole is provided in the lower limit platform, and a slot is provided at the corresponding position of the clamping seat, the inner buckle blocks are placed in the slot and the clamping seat is threadedly connected and fixed to the lower limit platform on the inner wall of the shell by screws.
[0013] Preferably, a notch is provided at one end of the shell, and a fixed plate matching the width of the notch is provided at one end of the support seat. The fixed plate is placed in the notch and one end face of the fixed plate is placed outside the shell and fixedly connected to the stationary knife, so that the outer side surface at the notch at the end of the shell is in contact with the end face of the stationary knife; a swinging groove is provided above the notch of the shell, and the movable knife and the movable knife seat are placed in the swinging groove and in contact with the end face of the stationary knife and can swing horizontally back and forth along the end face of the stationary knife under the drive of the swing rod.
[0014] On the basis of the above-mentioned engraving knife head assembly, the applicant has also proposed a technical solution for an engraving knife, which includes the above-mentioned engraving knife head assembly.
[0015] The beneficial effects of the present invention are:
[0016] 1. The shell is set to be an integrated cone, which is convenient for fingers to grasp when in use, and is more suitable for depicting complex patterns or words and letters, thereby improving the depiction accuracy and work efficiency of patterns, words or letters.
[0017] 2. The housing is set as an integrated conical housing, which reduces the gap existing in the split housing during the installation process and improves the overall appearance of the cutter head assembly or the engraving knife.
[0018] 3. A support seat is added in the housing cavity. During assembly, the support seat can be used to fix the stationary knife, the moving knife, the moving knife seat and the swing arm to ensure the coaxiality of the stationary knife, the moving knife, the moving knife seat and the swing arm during the assembly process. This can effectively prevent the swing arm from driving the moving knife seat and the moving knife to swing back and forth beyond one side of the stationary knife, affecting the trimming and carving efficiency of the moving knife or cutting the skin, thereby improving the trimming and carving efficiency and use safety of the engraving knife head assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A three-dimensional structural diagram of a cutting knife head assembly according to an embodiment of the present invention
[0020] Figure 2 A side view of a cutting knife head assembly according to an embodiment of the present invention
[0021] Figure 3 A cross-sectional structural diagram of a cutting knife head assembly according to an embodiment of the present invention
[0022] Figure 4 A three-dimensional assembly diagram of a cutting knife head assembly according to an embodiment of the present invention
[0023] Figure 5 A three-dimensional assembly diagram of the support seat and the swing rod in an embodiment of the present invention
[0024] Figure 6 A three-dimensional structural diagram of a support base in an embodiment of the present invention
[0025] Figure 7 This is a front perspective structural diagram of the housing in an embodiment of the present invention.
[0026] Figure 8 The rear perspective structural diagram of the housing in the embodiment of the present invention is
[0027] Fig. 9 A three-dimensional structural diagram of the card connector in an embodiment of the present invention DETAILED DESCRIPTION
[0028] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:
[0029] like Figure 1-9 As shown, the present invention is a lettering knife head assembly, including a stationary knife 1, a moving knife 2, a moving knife seat 3, a swing rod 4 and a housing 5. The moving knife seat 3 is buckled on the moving knife 2 so that the moving knife 2 fits with the stationary knife 1. The swing rod 4 is placed in the housing 5, and its two ends are respectively connected to the moving knife seat 3 and the driving mechanism, and the driving mechanism is installed on the output shaft of the motor in the body; the housing 5 is conical and closed all around so that a cavity 51 with two ends communicating is formed in the housing 5, and the support seat 6 is detachably fixed in the cavity 51 of the housing 5, and one end of the support seat 6 is fixedly connected to the stationary knife 1 arranged outside the housing 5; the swing rod 4 is hinged and fixed to the support seat 6, one end is linked to the moving knife seat 3, and the other end is synchronously linked to the driving mechanism. The housing 5 is set to be an integral cone, which can be convenient for fingers to grasp when in use, and can better adapt to the engraving of complex patterns or words and letters, improve the accuracy of engraving patterns, words or letters, and improve the work efficiency of engraving. Secondly, the integrated conical shell 5 reduces the gap existing in the split shell 5 during the installation process, and improves the overall appearance of the cutter head assembly or the lettering knife. A support seat 6 is added in the housing 51 of the shell 5, and the support seat 6 can be used to fix the stationary knife 1, the moving knife 2, the moving knife seat 3 and the swing rod 4 during assembly, so as to ensure the coaxiality of the stationary knife 1, the moving knife 2, the moving knife seat 3 and the swing rod 4 during the assembly process, and effectively prevent the swing rod 4 from driving the moving knife seat 3 and the moving knife 2 to swing back and forth beyond one side of the stationary knife 1, affecting the trimming and carving efficiency of the moving knife 2 or cutting the skin, thereby improving the trimming and carving efficiency and use safety of the lettering knife head assembly.
[0030] In order to improve the assembly coaxiality of various components and facilitate the installation of the rocker arm 4, a limit plate 61 is provided on the support seat 6, and the two ends of the limit plate 61 are connected to the support seat 6 as a whole through the side plates 62; an axial hole 63 is provided on the limit plate 61, and a positioning seat 64 with a pin hole 65 is provided below the limit plate 61; a hinge column 41 with two ends protruding from the rocker arm 4 is provided in the middle of the rocker arm 4, and a hinge hole 42 is provided in the hinge column 41, and the hinge shaft 43 passes through the axial hole 63 on the limit plate 61 and the hinge hole 42 in the hinge column 41 and is inserted into the pin hole 65 of the positioning seat 64 to hinge and fix the rocker arm 4 to the support seat 6. A limit plate 61 with an axis hole 63 and a positioning seat 64 with a pin hole 65 are provided on the support seat 6, and a hinge column 41 protruding from the rocker arm 4 is provided in the middle of the rocker arm 4. During assembly, the rocker arm 4 can be hinged and fixed to the support seat 6 using the hinge axis 43. Since the static knife 1 is fixed to one end of the support seat 6 and the two ends of the rocker arm 4 are respectively connected to the moving knife seat 3 and the driving mechanism, when the rocker arm 4 is installed in the center position of the support seat 6, the moving knife 2, the moving knife seat 3 and the static knife 1 can be ensured to be on the same axis accordingly, thereby ensuring the coaxiality of the assembly, effectively preventing the moving knife 2 from swinging back and forth along one side of the static knife 1 or sliding out of the static knife 1 to cut the skin due to deviation in the assembly position, thereby improving the trimming and carving efficiency and use safety of the moving knife 2. In order to reduce the friction between the rocker arm 4 and the support seat 6 and reduce the working noise, the two ends of the hinge column 41 protrude from the rocker arm 4, reducing the contact area between the rocker arm 4 and the support seat 6, effectively reducing the working noise of the rocker arm 4 during the reciprocating swinging process driven by the driving mechanism, and improving the use comfort of the engraving knife head assembly.
[0031] In order to reduce the working noise of the swing rod 4 during the reciprocating swing process driven by the driving mechanism to the greatest extent, a spring 66 is provided on the outer sleeve of the positioning seat 64, one end of the spring 66 is pressed against the lower end surface of the swing rod 4, and the other end is pressed against the support seat 6. By arranging the spring 66 on the outer sleeve of the positioning seat 64 of the support seat 6, one end of the spring 66 is pressed against the end surface of the support seat 6, and the other end is sleeved outside the hinge column 41 of the swing rod 4 and pressed against the swing rod 4. When the assembly is completed, under the elastic force of the spring 66, only the hinge column 41 at the upper end of the swing rod 4 is in contact with the limit plate 61 of the support seat 6, which minimizes the contact area between the swing rod 4 and the support seat 6, thereby effectively reducing the working noise of the swing rod 4 and improving the comfort of the engraving knife head assembly and the engraving knife.
[0032] In order to ensure the trimming and carving efficiency between the moving knife 2 and the static knife 1, a torsion spring column 82 and a torsion arm slot 83 are provided on the support seat 6, and the double torsion spring 8 is sleeved outside the torsion spring column 82, one set of torsion arms 81 is placed in the torsion arm slot 83, and the other end of the torsion arm 81 is placed outside the housing 5 and buckled on the moving knife seat 3 to make the moving knife 2 and the static knife 1 fit together. The torsion spring column 82 and the torsion arm slot 83 are provided on the support seat 6, and the double torsion spring 8 can be fixed by the support seat 6 during assembly, so that the static knife 1, the moving knife 2, the moving knife seat 3 and the swing rod 4 are on the same axis, effectively avoiding the assembly of the moving knife 2 and the static knife 1 and the reciprocating swing deviation, and ensuring the trimming and carving efficiency and use safety between the moving knife 2 and the static knife 1.
[0033] In order to prevent the support seat 6 from swinging or borrowing position when installed in the shell 5, which affects the trimming and carving efficiency of the cutter head assembly, a guide rail 52 for limiting the horizontal displacement of the support seat 6 and an upper limit platform 53 and a lower limit platform 54 for limiting the vertical displacement of the support seat 6 are provided on the inner wall of the cavity 51 of the shell 5; a guide groove 67 and a lower limit block 68 are provided on the support seat 6, and the guide groove 67 is inserted outside the guide rail 52 to fix the support seat 6 in the horizontal limit position in the shell 5, and the limit plate 61 and the lower limit block 68 are respectively fitted with the corresponding upper limit platform 53 and the lower limit platform 54 to fix the support seat 6 in the vertical limit position in the shell 5. During assembly, the guide groove 67 set at the bottom of the support seat 6 is inserted outside the guide rail 52 in the inner cavity 51 of the shell 5, so that the guide rail 52 limits the sliding direction of the support seat 6, thereby effectively preventing the support seat 6 from being offset or misaligned along the two sides of the shell 5. When one end of the support seat 6 slides to the port at one end of the shell 5, the upper limit platform 53 arranged on the inner wall of the shell 5 cavity 51 will fit with the limit plate 61 on the support seat 6, and the lower limit platform 54 arranged on the inner wall of the shell 5 cavity 51 will fit with the lower limit block 68 on the support seat 6, thereby avoiding vertical displacement or misalignment of the support seat 6 along the shell 5, thereby ensuring the trimming and engraving efficiency and safety of the engraving knife head assembly.
[0034] In order to ensure the installation firmness of the support seat 6 and the shell 5 and facilitate the installation of the engraving knife head assembly and the engraving knife body, a clamping seat 9 is provided at one end port where the shell 5 is connected to the body. The clamping seat 9 is fixedly connected to the shell 5 and its inner end surface is pressed against the support seat 6 to form an axial connection and fixation between the support seat 6 and the shell 5. Since the shell 5 is conical and the support seat 6 is vertically limited by the limit plate 61 and the lower limit block 68 fitting with the upper limit platform 53 and the lower limit platform 54 in the housing cavity 51 of the shell 5, when the clamping seat 9 is fixed at the end port where the shell 5 is connected to the body and pressed against the end face of the support seat 6, the support seat 6 will be squeezed accordingly. The greater the squeezing force, the tighter the limit plate 61 and the lower limit block 68 on the support seat 6 fit with the upper limit platform 53 and the lower limit platform 54 on the inner wall of the housing cavity 51 of the shell 5, and the tighter the connection between the support seat 6 and the shell 5 is affected by the cone, thereby effectively ensuring the connection firmness between the support seat 6 and the shell 5. The clamping seat 9 is set at the port of the shell 5, and can be directly clamped and connected with the body of the engraving knife through the clamping seat 9 during assembly, which is convenient for disassembly, cleaning or replacement of the engraving knife head assembly.
[0035] In order to ensure the connection firmness between the clamping seat 9 and the shell 5, a plurality of inner buckle blocks 55 are provided on the inner side wall of the cavity 51 at one end port where the shell 5 is connected to the body, a screw hole is provided in the lower limit platform 54, and a clamping slot 91 is provided at the corresponding position of the clamping seat 9. The inner buckle blocks 55 are placed in the clamping slot 91 and the clamping seat 9 is threadedly connected and fixed with the lower limit platform 54 on the inner wall of the shell 5 by screws. By providing a plurality of inner buckle blocks 55 on the inner wall of the cavity 51 of the shell 5 and providing a clamping slot 91 on the clamping seat 9, while limiting the upper part of the clamping seat 9 by using the inner buckle blocks 55 and the clamping slot 91, the lower end of the clamping seat 9 is threadedly connected with the shell 5 by screws to ensure the connection firmness between the clamping seat 9 and the shell 5 and the end face of the support seat 6 is pressed to ensure the connection firmness between the support seat 6 and the shell 5. In the actual production process, at least three clamping feet are provided on the outer end face of the clamping seat 9 for clamping connection with the engraving knife body.
[0036] In order to facilitate the reciprocating swing trimming and carving of the static knife 1 and the moving knife 2 fixed by the support seat 6, a notch 56 is provided at one end of the shell 5, and a fixing plate 69 matching the width of the notch 56 is provided at one end of the support seat 6. The fixing plate 69 is placed in the notch 56, and one end face of the fixing plate 69 is placed outside the shell 5 and fixedly connected to the static knife 1, and the outer side face of the notch 56 at the end of the shell 5 is matched with the end face of the static knife 1; a swing groove 57 is provided above the notch 56 of the shell 5, and the moving knife 2 and the moving knife seat 3 are placed in the swing groove 57 and are matched with the end face of the static knife 1, and can be horizontally reciprocated along the end face of the static knife 1 under the drive of the swing rod 4. By providing the notch 56 at the small end of the conical shell 5, the fixing plate 69 provided on the end of the support seat 6 can be placed in the notch 56 to block the notch 56 and fixedly connected to the static knife 1, and the outer side face of the notch 56 of the shell 5 is matched with the end face of the static knife 1 to improve the overall beauty of the lettering knife head assembly. In order not to affect the reciprocating swing of the movable knife 2 and the movable knife seat 3, a swinging groove 57 is further provided above the notch 56 of the shell 5. The movable knife seat 3 and the movable knife 2 are placed in the swinging groove 57 and are in contact with the end face of the stationary knife 1 under the torsional force of the double torsion spring 8 and can swing back and forth with the swing rod 4 to realize the trimming and carving of the hair knife.
[0037] On the basis of the above-mentioned engraving knife head assembly, the applicant has also proposed a technical solution for an engraving knife, which includes the above-mentioned engraving knife head assembly.
[0038] The above embodiments should not be regarded as limiting the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.
Claims
1. A cutting knife head assembly, comprising a stationary knife (1), a moving knife (2), a moving knife seat (3), a swing rod (4) and a housing (5), wherein the moving knife seat (3) is buckled on the moving knife (2) so that the moving knife (2) and the stationary knife (1) are in contact, and the swing rod (4) is placed in the housing (5) and its two ends are respectively connected to the moving knife seat (3) and a driving mechanism; characterized in that The shell (5) is closed on all sides to form an integral cone so that a cavity (51) with two ends communicating with each other is formed in the shell (5); the support seat (6) is detachably fixed in the cavity (51) of the shell (5), and one end of the support seat (6) is fixedly connected to a stationary knife (1) arranged outside the shell (5); the swing rod (4) is hinged at the center of the support seat (6), one end of which is linked to the moving knife seat (3) so that the moving knife seat (3), the moving knife (2) and the stationary knife (1) are on the same axis, and the other end is synchronously linked with the driving mechanism.
2. A cutting knife head assembly according to claim 1, characterized in that A limiting plate (61) is provided on the support seat (6), and the two ends of the limiting plate (61) are connected to the support seat (6) as a whole through side plates (62); an axial hole (63) is provided on the limiting plate (61), and a positioning seat (64) with a pin hole (65) is provided below the limiting plate (61); a hinge column (41) with two ends protruding from the swing rod (4) is provided in the middle of the swing rod (4), and a hinge hole (42) is provided in the hinge column (41); a hinge shaft (43) passes through the axial hole (63) on the limiting plate (61) and the hinge hole (42) in the hinge column (41) and is inserted into the pin hole (65) of the positioning seat (64), so that the swing rod (4) and the support seat (6) are hingedly fixed.
3. A cutting knife head assembly according to claim 2, characterized in that A spring (66) is provided on the outer sleeve of the positioning seat (64), one end of the spring (66) is pressed against the lower end surface of the swing rod (4), and the other end is pressed against the support seat (6).
4. A cutting knife head assembly according to claim 1, characterized in that A torsion spring column (82) and a torsion arm groove (83) are provided on the support seat (6); a double torsion spring (8) is sleeved outside the torsion spring column (82); one set of torsion arms (81) is placed in the torsion arm groove (83); the other end of the torsion arm (81) is placed outside the housing (5) and buckled onto the moving knife seat (3) so that the end faces of the moving knife (2) and the stationary knife (1) are in contact with each other.
5. A cutting knife head assembly according to claim 2, characterized in that A guide rail (52) for limiting the horizontal displacement of the support seat (6) and an upper limit platform (53) and a lower limit platform (54) for limiting the vertical displacement of the support seat (6) are provided on the inner wall of the cavity (51) of the shell (5); a guide groove (67) and a lower limit block (68) are provided on the support seat (6); the guide groove (67) is inserted outside the guide rail (52) so that the support seat (6) is horizontally limited and fixed in the shell (5); the limit plate (61) and the lower limit block (68) are respectively fitted with the corresponding upper limit platform (53) and lower limit platform (54) so that the support seat (6) is vertically limited and fixed in the shell (5).
6. A cutting knife head assembly according to claim 1, characterized in that A clamping seat (9) is provided at one end of the shell (5) connected to the body. The clamping seat (9) is fixedly connected to the shell (5) and its inner end surface is pressed against the support seat (6) so that the support seat (6) and the shell (5) are axially connected and fixed.
7. A cutting knife head assembly according to claim 5 or 6, characterized in that A plurality of inner buckle blocks (55) are provided on the inner side wall of a cavity (51) at one end of the housing (5) connected to the body, a screw hole is provided in the lower limit platform (54), a clamping groove (91) is provided at a corresponding position of the clamping seat (9), the inner buckle blocks (55) are placed in the clamping groove (91), and the clamping seat (9) is threadedly connected and fixed to the lower limit platform (54) on the inner wall of the housing (5) by screws.
8. The engraving knife head assembly according to claim 1, characterized in that A notch (56) is provided at one end of the housing (5), and a fixing plate (69) matching the width of the notch (56) is provided at one end of the support seat (6). The fixing plate (69) is placed in the notch (56) and one end face of the fixing plate (69) is placed outside the housing (5) and fixedly connected to the stationary knife (1), so that the outer side face of the notch (56) at the end of the housing (5) fits the end face of the stationary knife (1); a swing groove (57) is provided above the notch (56) of the housing (5), and the movable knife (2) and the movable knife seat (3) are placed in the swing groove (57) and fit the end face of the stationary knife (1) and can swing back and forth horizontally along the end face of the stationary knife (1) under the drive of the swing rod (4).
9. A carving knife, characterized in that The invention comprises a cutting knife head assembly according to any one of claims 1 to 8.