Spliced comb with convergent comb teeth and comb blank preparation method thereof

Abstract

The invention discloses a spliced comb with convergent comb teeth, which comprises a comb back and a tooth part which are spliced with each other, the comb teeth are arranged along the tooth part along the fiber direction, and the tooth part is mounted on the comb back in an inward bending deformation manner, so that the comb teeth are convergent towards one side of the tooth tip; the length direction of the comb teeth is consistent with the fiber direction of the tooth part, so that the bending strength of the comb teeth is improved, and the comb teeth are not easy to break in the use process and the comb processing process. Meanwhile, in the comb blank preparation process, splicing surfaces with different curvatures are machined on the comb back blank and the tooth part blank, only parallel comb teeth need to be arranged on the tooth part blank, and the tooth part blank and the comb back blank are spliced and fixed together by utilizing the characteristic that the tooth part blank is easy to bend after tooth punching; therefore, the effects that the comb teeth are arranged in a convergent shape towards one side of the tooth tips and the length direction of the comb teeth is consistent with the fiber direction of the tooth parts can be achieved, the preparation method of the comb blank is simple and easy to operate, and meanwhile, the overall structural strength of the comb and the bending strength of the comb teeth are enhanced.

Description

Technical Field

[0001] The invention relates to a bamboo or wood comb, in particular to a spliced ​​comb with convergent comb teeth and a method for preparing a comb blank thereof. Background Art

[0002] Combs, as tools for combing hair, are of various types, such as sandalwood combs, jujube wood combs, peach wood combs, ox horn combs, etc. When women comb their long hair, they sometimes need to restrain their hair to a certain extent during the process of combing their hair. Therefore, a comb with convergent teeth can have a certain gathering effect on long hair when combing hair, playing a role of temporarily restraining the hair. Patent CN219982333U discloses a comb with convergent teeth, including a comb back and a tooth portion, wherein a plurality of comb teeth are arranged on a side of the tooth portion away from the comb back, and the comb teeth gather inward along the tooth tips to form a convergent shape. When the teeth are made of bamboo or wood, no matter whether the comb back and the teeth are integrally arranged or separately arranged, the existing practice is to make the fiber direction of the teeth perpendicular to the length direction of the comb, and then provide the teeth arranged in a convergent shape. Since there is an angle between the length direction of the teeth and the fiber direction of the tooth block, the fibers on the teeth will inevitably be cut obliquely by the saw blade or the cutter, which will weaken the bending strength of the teeth and make them easy to break during processing and use.

[0003] Therefore, it is necessary to solve the problem that the comb teeth of a comb with convergent teeth have poor bending strength and are easily broken during processing and use. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a spliced ​​comb with converging teeth and a method for preparing a comb blank thereof, so as to solve the problem that the comb teeth of the comb with converging teeth have poor bending strength and are easily broken during processing and use.

[0005] The spliced ​​comb with converging teeth of the present invention comprises a comb back and a tooth portion which are spliced ​​together, a plurality of comb teeth are provided along the tooth portion along the fiber direction, and the tooth portion is installed on the comb back in a manner of bending and deforming inward so that the comb teeth are converging toward the tooth tip side;

[0006] Furthermore, the distance from the root of the comb teeth to the joint seam is 2mm-5mm;

[0007] Furthermore, the tooth portion is inserted into the comb back, a tenon is provided along the joint surface of the tooth portion, and a groove is provided along the joint surface of the comb back to cooperate with the tenon;

[0008] Furthermore, the joint surface between the comb back and the teeth is a streamlined structure that is laterally concave toward the comb back.

[0009] The present invention also discloses a method for preparing a comb blank of a spliced ​​comb with convergent teeth, comprising the following steps:

[0010] S1, cutting the comb back blank and the tooth blank: when cutting the tooth blank, make the fiber direction of the tooth blank perpendicular to the length direction of the comb;

[0011] S2, processing the splicing surface: processing the splicing surfaces with different curvatures on the comb back blank and the tooth blank;

[0012] S3, tooth opening: parallel comb teeth are opened along the fiber direction of the tooth blank;

[0013] S4, splicing and bonding: taking advantage of the fact that the tooth blank is easy to bend after the teeth are cut, the tooth blank and the comb back blank are spliced ​​and bonded together;

[0014] Further, in step S1, a process processing allowance is reserved when cutting the comb back blank and the tooth blank to ensure that the projection area of ​​the comb back blank after the splicing surface is processed is still larger than the projection area of ​​the comb back, and the projection area of ​​the tooth blank after the splicing surface is processed is larger than the projection area of ​​the tooth after flattening to a parallel tooth state;

[0015] Further, in step S2, the curvature of the splicing surface of the comb back blank is greater than the curvature of the splicing surface of the tooth blank, so that the splicing surface of the comb back blank and the splicing surface of the tooth blank form a gap that decreases from the middle to both ends without pressure;

[0016] Further, in step S2, processing is performed according to the principle that the minimum distance from the splicing surface of the comb back blank to the back surface of the comb is greater than the maximum distance from the bottom of the tooth gap of the tooth blank to the splicing surface of the tooth blank;

[0017] Further, in step S2, a tongue-and-groove structure for splicing is processed on the splicing surfaces of the comb back blank and the tooth portion blank;

[0018] Furthermore, in step S4, adhesive is applied to the joint surfaces of the comb back blank and the tooth blank respectively, and then the comb back blank and the tooth blank are clamped by a clamp so that the tooth blank is bent and deformed toward the tooth tip, and the joint surface of the tooth blank and the joint surface of the comb back blank are butt-jointed with each other until they are fully fitted, and after curing, the bending state of the tooth blank and the convergence state of the comb teeth are fixed and maintained, and at this point, the preparation of the comb blank is completed.

[0019] The beneficial effects of the present invention are as follows: the spliced ​​comb with convergent teeth and the method for preparing the comb blank of the present invention improve the bending strength of the comb teeth by making the length direction of the comb teeth consistent with the fiber direction of the tooth portion, and the comb teeth are not easy to break during use and during the processing of the comb. At the same time, in the process of preparing the comb blank of the spliced ​​comb, by processing splicing surfaces with different curvatures on the comb back blank and the tooth portion blank, it is only necessary to open parallel comb teeth on the tooth portion blank, and by utilizing the characteristic that the tooth portion blank is easy to bend after opening the teeth, the tooth portion blank and the comb back blank are spliced ​​and fixed together, so that the comb teeth are arranged in a convergent shape toward the tooth tip side and the length direction of the comb teeth is consistent with the fiber direction of the tooth portion. The method for preparing the comb blank is simple and easy to operate, and at the same time, the overall structural strength of the comb and the bending strength of the comb teeth are enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 is a front view of the finished splicing comb;

[0022] Figure 2 is a side view of the finished splicing comb;

[0023] Figure 3 is a flattened schematic diagram of the tooth part;

[0024] Figure 4 This is the cutting diagram of the comb back blank;

[0025] Figure 5 This is the cutting diagram of the tooth blank;

[0026] Figure 6 It is a schematic diagram of a comb back blank with a splicing surface processed;

[0027] Figure 7 This is a schematic diagram of the tooth blank after the joint surface is processed;

[0028] Figure 8 This is a schematic diagram of the tooth blank after tooth opening;

[0029] Fig. 9 It is a schematic diagram of splicing comb blanks. DETAILED DESCRIPTION

[0030] The splicing comb with the teeth 3 in the convergent shape of the present embodiment comprises a comb back 1 and a tooth portion 2 spliced ​​together, a plurality of comb teeth 3 are provided along the tooth portion 2 in the fiber direction, the tooth portion 2 is installed on the comb back 1 in a manner of bending and deforming inwards so that the comb teeth 3 are in a convergent shape toward the tooth tip side; the teeth are directly opened on the tooth portion 2 structure by a tooth opening machine, the comb teeth 3 and the tooth portion 2 are an integral structure, and then spliced ​​with the comb back 1 through the tooth portion 2. The comb back 1 and the tooth portion 2 are both made of bamboo and wood materials. "Along the fiber" refers to the arrangement direction or growth direction of the fiber. For bamboo and wood components, the fiber direction refers to its growth direction. The teeth are opened along the fiber direction of the tooth portion 2, so that the comb teeth 3 have better toughness and higher bending strength, are not easy to break, and are also conducive to the processing of the comb teeth 3. "The tooth portion 2 is bent and deformed inwards" means that the two sides of the tooth portion 2 are slightly bent toward the middle relative to each other, so that the tooth tips of the comb teeth are slightly gathered toward the center and the whole is in a convergent shape. That is to say, the teeth of the present invention are installed on the comb back in a state where they are bent by an external force, and are not installed on the comb back in a natural state. The gathered state of the comb teeth is formed by the bending deformation of the teeth, and this state is maintained after the teeth are fixed on the comb back, and the strength of the comb teeth is not affected. Therefore, when the teeth are opened, the teeth can be opened according to conventional methods, and there is no need to deliberately process the comb teeth into a gathered state. If the comb teeth are directly processed into a gathered state, it is impossible to make the comb teeth open along the fibers in terms of technology, and the strength of the comb teeth cannot be guaranteed.

[0031] In this embodiment, the distance from the root of the comb teeth 3 to the splicing seam 5 is 2mm-5mm; the splicing seam 5 is the seam formed by splicing the comb back 1 and the tooth portion 2, so that the distance from the bottom 4 of the tooth seam of the comb teeth 3 to the splicing seam 5 is set to be narrow, which can ensure that the tooth blank 2' after the teeth are opened has the flexibility to bend toward the middle. Through splicing, the comb teeth 3 are converged toward the tooth tip side, instead of directly processing the comb teeth 3 into an inclined and convergent structure, which obviously reduces the processing difficulty of the comb teeth 3. That is to say, when processing the comb teeth 3, it is only necessary to open the comb teeth 3 arranged in parallel along the fiber direction of the tooth blank 2', and then through the external force during splicing, the tooth blank 2' is bent under the force and spliced ​​with the comb back blank 1', so that the comb teeth 3 can be converged toward the tooth tip side. Therefore, to achieve this function, it is very important to make the tooth blank 2' flexible after the teeth are opened. If the distance from the bottom 4 of the tooth gap of the comb teeth 3 to the splicing seam 5 is set too wide, the stiffness of the tooth blank 2' after the teeth are opened will be too high, and it will be difficult to achieve this function. The tooth portion 2 is opened along the fiber direction, which is a reliable guarantee for improving the bending strength of the comb teeth. At the same time, the curvature of the splicing surface 5" of the comb back blank 1' is greater than the curvature of the splicing surface 5' of the tooth blank 2', so that the splicing surface 5" of the comb back blank 1' and the splicing surface 5' of the tooth blank 2' form a gap that decreases from the middle to both ends under no pressure. Since the distance between the splicing surface of the comb back blank 1' and the back of the comb is greater than the distance between the bottom of the tooth gap of the tooth blank 2' and the splicing surface of the tooth blank 2', the rigidity of the tooth blank 2' is weaker than that of the comb back blank 1'. During splicing, the tooth blank 2' is easily bent under the action of external force, and is fixed to the comb back blank 1' with better rigidity in a slightly bent posture, thereby realizing that the comb teeth 3 are in a convergent and gathered state.

[0032] In this embodiment, the tooth portion 2 is inserted into the comb back 1, and a tenon 6 is provided along the splicing surface of the tooth portion 2, and a groove 7 is provided along the splicing surface of the comb back 1 to be fixed with the tenon 6; the groove 7 can also be provided on the splicing surface of the tooth portion 2, and the tenon 6 is provided on the splicing surface of the comb back 1 to be fixed with the groove 7. However, since the tooth portion 2 needs to be toothed, in order to ensure the strength and stability of the structure, it is preferred to adopt a structure in which the tenon 6 is provided on the splicing surface of the tooth portion 2. The tenon joint method facilitates accurate positioning between the comb back blank 1' and the tooth portion blank 2' during splicing, and is also conducive to increasing the connection strength between the comb back 1 and the tooth portion 2.

[0033] In this embodiment, the joint surface of the comb back 1 and the tooth portion 2 is a streamlined structure that is laterally concave toward the comb back 1, which can ensure that when the tooth portion blank 2' after tooth opening is fitted with the comb back blank 1', the tooth portion blank 2' undergoes uniform bending deformation and the comb teeth 3 converge uniformly toward the tooth tip side.

[0034] This embodiment also discloses a method for preparing a comb blank of a spliced ​​comb with converging teeth, comprising the following steps:

[0035] S1, cutting the comb back blank 1' and the tooth blank 2': cutting the comb back material to obtain the comb back blank 1', a process allowance should be reserved for the comb back blank 1' to ensure that the projection area of ​​the comb back blank 1' after the splicing surface is processed is still larger than the projection area of ​​the comb back 1, and the minimum distance from the splicing surface to the back of the comb back blank 1' should be significantly larger than the maximum design distance from the bottom 4 of the tooth gap to the splicing surface; cutting the tooth material to obtain the tooth blank 2', so that the fiber direction of the tooth blank 2' is perpendicular to the length direction of the comb, a process allowance should be reserved for the tooth blank 2' to ensure that the projection area of ​​the tooth blank 2' after the splicing surface is processed is still larger than the projection area of ​​the tooth 2 after being flattened to a parallel tooth state.

[0036] S2, processing the splicing surface: processing the splicing surfaces with different curvatures on the comb back blank 1' and the tooth blank 2'; using the milling equipment to process the splicing surfaces with different curvatures on the comb back blank 1' and the tooth blank 2', and when applicable, also including the tongue and groove features on the splicing surface; the curvature of the splicing surface of the comb back blank 1' is greater than the splicing surface of the tooth blank 2', so that the splicing surface of the comb back blank 1' and the splicing surface of the tooth blank 2' form a gap that decreases from the middle to both ends without pressure; the splicing surface shape of the comb back blank 1' is consistent with the splicing surface shape of the comb; the splicing surface shape of the tooth blank 2' is flatter than the splicing surface shape of the comb; the projection area of ​​the comb back blank 1' after processing the splicing surface is greater than the projection area of ​​the comb back 1, and the minimum distance from the splicing surface to the back of the comb back blank 1' is significantly greater than the maximum design distance from the bottom 4 of the tooth gap to the splicing surface; the projection area of ​​the tooth blank 2' after processing the splicing surface is greater than the projection area of ​​the tooth after flattening to the parallel tooth state;

[0037] S3, tooth opening: parallel arranged comb teeth 3 are opened along the fiber direction of the tooth blank 2'; the tooth opening equipment is used to open the parallel arranged comb teeth 3 along the fiber direction of the tooth blank 2', and the distance from the bottom 4 of the tooth gap to the splicing surface is consistent with the designed distance;

[0038] S4, splicing and bonding: taking advantage of the fact that the tooth blank 2' is easy to bend after the teeth are cut, the tooth blank 2' and the comb back blank 1' are spliced ​​and bonded together;

[0039] In this embodiment, in step S4, adhesive is applied to the joint surfaces of the comb back blank 1' and the tooth blank 2' respectively, and then the comb back blank 1' and the tooth blank 2' are clamped by a clamp. Since the comb back blank 1' has good rigidity and the tooth blank 2' after tooth opening has poor rigidity, under the pressure of the gluing clamp, the comb back blank 1' will maintain its original shape unchanged, while the tooth blank 2' with poor rigidity will bend and deform toward the tooth tip side until the joint surface of the tooth blank 2' is completely fitted with the joint surface of the comb back blank 1'. At this time, the comb teeth 3 are arranged in a convergent manner toward the tooth tip side, and the length direction of the comb teeth 3 is consistent with the fiber direction of the teeth. After the glue is cured, the bending state of the tooth blank 2' and the convergent state of the comb teeth 3 are fixed and maintained.

[0040] Embodiment 1

[0041] like Figure 1 As shown, the comb back 1 and the tooth part 2 are separately arranged and are made of wood. The comb teeth 3 converge about 25 degrees toward the tooth tip side, and the bottom 4 of the tooth gap is about 3mm away from the edge of the joint surface. The comb has an arc-shaped joint surface that is concave toward the comb back 1 side, and the radius of the arc-shaped joint surface is about R300mm. Figure 2 As shown, a rectangular groove is arranged in the middle of the joint surface of the comb back 1 along the direction of the joint surface, and a rectangular tenon matching the groove is arranged in the middle of the joint surface of the tooth portion along the direction of the joint surface.

[0042] 1. Preparation for cutting

[0043] like Figure 4 As shown, in this embodiment, the comb back blank 1' is cut by a joinery band saw. In order to facilitate the clamping and positioning during subsequent processing, the back of the comb back blank 1' is cut into a flat surface. In order to reduce the subsequent milling allowance of the joint surface, the approximate shape of the joint surface of the comb back blank 1' is pre-cut. The projected area of ​​the comb back blank 1' is significantly larger than Figure 1 The projected area of ​​the comb back 1 shown;

[0044] like Figure 5 As shown, in this embodiment, the tooth blank 2' is cut by a joinery band saw. In order to reduce the subsequent milling allowance of the joint surface, the approximate shape of the joint surface of the tooth blank 2' is pre-cut. The projection area of ​​the tooth blank 2' is significantly larger than Figure 3 The projected area of ​​the tooth portion after being flattened to a parallel tooth state is shown.

[0045] 2. Processing the splicing surface

[0046] like Figure 6 As shown, in this embodiment, a woodworking router is used to use a combination tool to process the R300mm arc-shaped splicing surface feature and the groove feature on the comb back blank 1' at one time. The distance from the top of the arc-shaped splicing surface to the back of the comb back blank 1' is significantly greater than that shown in FIG. Figure 1 The distance from the bottom 4 of the tooth gap to the joint surface is shown in the figure. The fiber direction of the comb back blank 1' is set in the same direction as the length direction of the comb. The projected area of ​​the comb back blank 1' after the joint surface is processed is still larger than Figure 1 The projected area of ​​the comb back 1 shown;

[0047] like Figure 7 As shown, in this embodiment, a woodworking router is used to use a combined tool to process the R450mm arc-shaped splicing surface feature and the tenon feature on the tooth blank 2' at one time. The fiber direction of the tooth blank 2' is perpendicular to the length direction of the comb. The projection area of ​​the tooth blank 2' after the splicing surface is processed is still larger than Figure 3 The projected area of ​​the tooth portion after flattening to the parallel tooth state is shown. In addition, Figure 6By comparison, it can be seen that the arc-shaped joint surface of the tooth blank 2' with an R450 mm diameter is much flatter than the arc-shaped joint surface of the comb back blank 1' with an R300 mm diameter.

[0048] 3. Opening teeth

[0049] like Figure 8 As shown, a conventional circular saw blade tooth cutting machine is used to cut parallel comb teeth 3 on the tooth blank 2' after the splicing surface is processed, and the distance from the bottom 4 of the tooth gap to the splicing surface is about 3 mm.

[0050] 4. Glue combination

[0051] like Fig. 9 As shown, glue is applied to the joint surfaces of the comb back blank 1' and the tooth blank 2' respectively, and then the joint surfaces are clamped and fixed with a gluing fixture. Before the pressure is applied, the joint surfaces of the tooth blank 2' and the comb back blank 1' are only in contact at both ends. As the clamping pressure increases, the tooth blank 2' will bend and deform toward the tooth tip side until the joint surface of the tooth blank 2' is completely fitted with the joint surface of the comb back blank 1', and the mortise and tenon on the joint surface of the tooth blank 2' and the comb back blank 1' is completely engaged. Figure 6 By comparison, it can be seen that the shape of the comb back blank 1' and its splicing surface does not change before and after gluing. Figure 8 By comparison, it can be seen that the tooth blank 2' has been significantly bent and deformed after splicing. After the glue is cured and shaped, the splicing fixture is removed, and the preparation of the spliced ​​comb blank is completed.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A splicing comb with convergent teeth, characterized in that: The comb comprises a comb back and a tooth part which are spliced ​​with each other. A plurality of comb teeth are arranged along the tooth part along the fiber direction. The tooth part is installed on the comb back in a manner of bending and deforming inwards so that the comb teeth are convergent toward the tooth tip.

2. The splicing comb with convergent teeth according to claim 1, characterized in that: The distance from the root of the comb teeth to the joint seam is 2mm-5mm.

3. The splicing comb with converging teeth according to claim 1, characterized in that: The tooth portion is inserted into the comb back, a tenon is arranged along the joint surface of the tooth portion, and a groove which cooperates with the tenon and is fixed along the joint surface of the comb back is arranged.

4. The splicing comb with converging teeth according to claim 3, characterized in that: The joint surface between the comb back and the teeth is a streamlined structure that is laterally concave toward the comb back.

5. The method for preparing a comb blank of a spliced ​​comb with convergent teeth according to claim 1, characterized in that: The following steps are involved: S1, cutting the comb back blank and the tooth blank: when cutting the tooth blank, make the fiber direction of the tooth blank perpendicular to the length direction of the comb; S2, processing the splicing surface: processing the splicing surfaces with different curvatures on the comb back blank and the tooth blank; S3, tooth opening: parallel comb teeth are opened along the fiber direction of the tooth blank; S4, splicing and bonding: Taking advantage of the fact that the tooth blank is easy to bend after the teeth are cut, the tooth blank and the comb back blank are spliced ​​and bonded together.

6. The method for preparing a comb blank of a spliced ​​comb with convergent teeth according to claim 5, characterized in that: In step S1, a process processing allowance is reserved when cutting the comb back blank and the tooth blank to ensure that the projection area of ​​the comb back blank after processing the splicing surface is still larger than the projection area of ​​the comb back, and the projection area of ​​the tooth blank after processing the splicing surface is still larger than the projection area of ​​the tooth after flattening to a parallel tooth state.

7. The method for preparing a comb blank of a spliced ​​comb with convergent teeth according to claim 5, characterized in that: In step S2, the curvature of the comb back blank splicing surface is greater than the curvature of the tooth blank splicing surface, so that the splicing surfaces of the comb back blank and the tooth blank form a gap that decreases from the middle to both ends without pressure.

8. The method for preparing a comb blank of a spliced ​​comb with convergent teeth according to claim 7, characterized in that: In step S2, processing is performed according to the principle that the minimum distance from the splicing surface of the comb back blank to the comb back surface is greater than the distance from the bottom of the tooth gap of the tooth blank to the splicing surface of the tooth blank.

9. The method for preparing a comb blank of a spliced ​​comb with convergent teeth according to claim 8, characterized in that: In step S2, a tongue and groove structure for splicing is processed on the splicing surfaces of the comb back blank and the tooth portion blank.

10. The method for preparing a comb blank of a spliced ​​comb with convergent teeth according to claim 5, characterized in that: In step S4, adhesive is applied to the joint surfaces of the comb back blank and the tooth blank respectively, and then the comb back blank and the tooth blank are clamped by a clamp so that the tooth blank is bent and deformed toward the tooth tip, and the joint surface of the tooth blank and the joint surface of the comb back blank are butted against each other until they are fully fitted, and after curing, the bending state of the tooth blank and the convergence state of the comb teeth are fixed and maintained.

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