Multilayer brush head and preparation method thereof

Abstract

The invention relates to a preparation method of a multilayer brush head. The preparation method comprises the following steps that metal wires and bristles are perpendicular to each other and alternately stacked; and the surfaces of the bristles are bonded with the metal wires through heating, and the straight brush structure with the multiple layers of bristles is obtained through compression molding. The invention further relates to the multi-layer brush head. The multi-layer brush head is prepared by adopting the preparation method of the multi-layer brush head. The prepared brush head has more dense bristles, and the problems that a traditional brush head is single in structure and insufficient in cleaning strength, and the contact area between the bristles and a cleaning part is small are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of brush heads and preparation methods thereof, and in particular relates to a multi-layer brush head and a preparation method thereof. Background Art

[0002] Traditional twisted wire brushes are made by twisting the bristles between two metal wires. For example, the automatic twisted wire brush production device provided in the Chinese utility model patent with the announcement number CN215014405U is used for preparation, and the bristles are arranged between the two metal wires of the U-shaped brush handle, and the first drive transmission component drives the first fixing clamp to rotate in a first direction, and the second drive transmission component drives the second fixing clamp to rotate in a direction opposite to the first direction; so that the first fixing clamp and the second fixing clamp rotate in opposite directions under the drive of their respective drive transmission components, thereby tightening the bristles to the U-shaped brush handle, and the U-shaped brush handle itself is also tightened into a spiral shape.

[0003] When twisted wire brushes are used in scenarios such as toothbrush heads, due to the torque limitation of the metal wire, there is usually a large gap between two adjacent layers of bristles in the axial direction, resulting in a small contact area of ​​the bristles, low cleaning efficiency, and insufficient cleaning force. In the traditional method of making twisted wire brushes, the metal wire clamps the bristles through torque, which has limitations in making brush heads, thus limiting the diversity of brush heads. Summary of the invention

[0004] The purpose of the present invention is to provide a method for preparing a multi-layer brush head in view of the above problems.

[0005] The present invention creatively proposes a method for preparing a multi-layer brush head, comprising the following steps:

[0006] The wires and bristles are arranged perpendicular to each other and in alternating layers;

[0007] The bristle surface is bonded to the metal wire by heating and pressed to form a straight brush structure with multiple layers of bristles.

[0008] In the above-mentioned method for preparing a multi-layer brush head, the metal wires are at least three layers, each layer of metal wires includes one or more parallel arranged metal wires, the bristles are at least two layers, each layer of bristles is sandwiched between two adjacent layers of metal wires, and the bristles in each layer of bristles are evenly arranged.

[0009] The outermost layer may be metal wire or brush bristles.

[0010] As a preferred solution, the metal wires are three layers and the bristles are two layers.

[0011] As a preferred solution, the metal wires are four layers and the bristles are three layers.

[0012] As a preferred solution, the metal wires are five layers and the bristles are four layers.

[0013] As one preferred solution, the metal wire has three layers and the bristles have three layers.

[0014] As a preferred solution, the metal wires are four layers and the bristles are four layers.

[0015] As a preferred solution, the metal wires are five layers and the bristles are five layers.

[0016] As a preferred solution, the metal wire has three layers and the bristles have four layers.

[0017] As a preferred solution, the metal wires are four layers and the bristles are five layers.

[0018] As a preferred solution, the metal wires have five layers and the bristles have six layers.

[0019] In the above-mentioned method for preparing a multi-layer brush head, the metal wire and the bristles are respectively conveyed through a metal wire conveying mechanism and a bristle conveying mechanism and overlapped downstream of the conveying mechanism.

[0020] In the above-mentioned method for preparing a multi-layer brush head, the wire transmission mechanism includes a roller device or a wire clamping device arranged on both sides of the wire transmission path, and the bristle transmission mechanism includes a conveyor belt device or a bristle feeding clamp arranged along the bristle transmission path.

[0021] When the bottom layer is a bristle layer, a high temperature resistant film may be provided at the bottom of the bristle layer as a bottom support, which is removed after roller forming.

[0022] In the above-mentioned method for preparing a multi-layer brush head, the bristles and metal wires are bonded by electromagnetic heating.

[0023] In the above-mentioned method for preparing a multi-layer brush head, the bristles and metal wires are formed by roller pressing.

[0024] In the above-mentioned method for preparing a multi-layer brush head, the straight brush structure is cut to obtain a straight multi-layer brush head.

[0025] In the above-mentioned method for preparing a multi-layer brush head, the formed straight brush structure is twisted around the same axis by a wire twisting mechanism to form a spiral brush structure with multi-layer bristles. The axis is located at the center of each metal wire of the straight brush structure and is parallel to the metal wire.

[0026] In the above-mentioned method for preparing a multi-layer brush head, the spiral brush structure is cut to obtain a spiral multi-layer brush head.

[0027] In the above-mentioned method for preparing a multi-layer brush head, the metal wire is iron wire, steel wire, copper alloy, aluminum alloy, titanium alloy or other materials that can be electromagnetically heated, and the diameter of the metal wire is 0.1-1 mm, preferably, the diameter of the metal wire is 0.1-0.2 mm. The diameter of the metal wire can also be determined according to the diameter of the bristles, and the bristles adopt a universal standard size, which is suitable for thicker bristles.

[0028] In the above-mentioned method for preparing a multi-layer brush head, the bristles are made of nylon bristles, PBT bristles, PP bristles or silicone bristles.

[0029] The multi-layer brush head can be prepared by a continuous process. The preparation steps of the straight multi-layer brush head are as follows:

[0030] 1) Several layers of metal wires are respectively transmitted through roller devices arranged on both sides of the metal wire transmission path, and a layer of bristles between two adjacent layers of metal wires is transmitted through a conveyor belt device arranged along the bristle transmission path. Each layer of metal wire and bristles are overlapped together at the downstream end through a roller.

[0031] 2) The stacked rollers are heated by an electromagnetic heating device to melt the surface of the bristles and bond them to the metal wires, and then the rollers are pressed by a pressure wheel to obtain a straight brush structure with multiple layers of bristles.

[0032] 3) The straight brush structure is cut into a straight multi-layer brush head.

[0033] The steps for preparing the spiral multi-layer brush head are as follows:

[0034] 1) Several layers of metal wires are respectively transmitted through roller devices arranged on both sides of the metal wire transmission path, and a layer of bristles between two adjacent layers of metal wires is transmitted through a conveyor belt device arranged along the bristle transmission path. Each layer of metal wire and bristles are overlapped together at the downstream end through a roller.

[0035] 2) The stacked rollers are heated by an electromagnetic heating device to melt the surface of the bristles and bond them to the metal wires, and then the rollers are pressed by a pressure wheel to obtain a straight brush structure with multiple layers of bristles.

[0036] 3) After the straight brush structure is formed, each metal wire is twisted around the same axis by a wire twisting mechanism to form a spiral brush structure with multiple layers of bristles. The axis is located at the center of each metal wire of the straight brush structure and is parallel to the metal wire.

[0037] 4) The spiral brush structure is cut into a spiral multi-layer brush head.

[0038] The present invention creatively proposes a multi-layer brush head, and the multi-layer brush head is prepared by adopting the multi-layer brush head preparation method mentioned above.

[0039] Compared with the prior art, the advantages of the present invention are:

[0040] The present invention provides a multi-layer brush head and a preparation method thereof, so that the prepared brush head has denser bristles, thereby changing the problems of a traditional brush head having a single structure, insufficient cleaning force, and a small contact area between the bristles and the cleaning part.

[0041] In the present invention, the bristles and the metal wire are fixed by a thermal bonding method, so that the bristles and the metal wire are adhered and fixed, so that the bristles and the metal wire are connected more tightly and are easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A process flow chart of the preparation of a multi-layer brush head provided by the present invention.

[0043] Figure 2 A schematic diagram of the structure of a straight brush with multiple layers of bristles provided by the present invention.

[0044] Figure 3 A schematic diagram of the structure of a spiral brush with multiple layers of bristles provided by the present invention.

[0045] In the figure, there are a straight brush structure 1, a metal wire 11, bristles 12, a spiral brush structure 2, a metal wire transmission mechanism 3, a roller device 31, a bristle transmission mechanism 4, a conveyor belt device 41, a roller 5, an electromagnetic heating device 6, and a pressure wheel 7. DETAILED DESCRIPTION

[0046] Further described by the following specific examples;

[0047] The present invention will be further described below in conjunction with specific examples, and it should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the appended claims of the application.

[0048] Example 1

[0049] like Figure 1 and Figure 2 As shown, the preparation steps of the straight multi-layer brush head are as follows:

[0050] 1) The three layers of metal wires 11 are respectively transported by roller devices 31 arranged on both sides of the metal wire transmission path. Each layer of metal wires 11 includes three metal wires 11 arranged in parallel and spaced apart. A layer of bristles 12 is transported between two adjacent layers of metal wires 11 by a conveyor belt device 41 arranged along the bristle transmission path. Each bristle 12 is arranged along the transmission direction of the conveyor belt device 41, and the radial direction of the bristles 12 is perpendicular to the radial direction of the metal wires 11. Each layer of metal wires 11 and bristles 12 are overlapped together at the downstream end by a roller 5.

[0051] 2) The two overlapping rollers 5 are heated by an electromagnetic heating device 6 to melt the surface of the bristles 12 and bond them to the metal wire 11, leaving a gap between the two overlapping rollers 5, and then the straight brush structure 1 with multiple layers of bristles 12 is obtained by roller pressing by a pressing wheel 7.

[0052] 3) The straight brush structure 1 is sheared by a cutting mechanism (not shown in the figure) to obtain a straight multi-layer brush head.

[0053] In this embodiment, the metal wire 11 is made of titanium alloy, and the bristles 12 are made of nylon bristles.

[0054] Example 2

[0055] like Figure 1 , Figure 2 and Figure 3 As shown, the steps for preparing the spiral multi-layer brush head are as follows:

[0056] 1) The three layers of metal wires 11 are respectively transported by roller devices 31 arranged on both sides of the metal wire transmission path. Each layer of metal wires 11 includes three metal wires 11 arranged in parallel and spaced apart. A layer of bristles 12 is transported between two adjacent layers of metal wires 11 by a conveyor belt device 41 arranged along the bristle transmission path. Each bristle 12 is arranged along the transmission direction of the conveyor belt device 41, and the radial direction of the bristles 12 is perpendicular to the radial direction of the metal wires 11. Each layer of metal wires 11 and bristles 12 are overlapped together at the downstream end by a roller 5.

[0057] 2) The two overlapping rollers 5 are heated by an electromagnetic heating device 6 to melt the surface of the bristles 12 and bond them to the metal wire 11, leaving a gap between the two overlapping rollers 5, and then the straight brush structure 1 with multiple layers of bristles 12 is obtained by roller pressing by a pressing wheel 7.

[0058] 3) After the straight brush structure 1 is formed, each metal wire 11 is twisted around the same axis by a wire twisting mechanism to form a spiral brush structure 2 with multiple layers of bristles 12 . The axis is located at the center of each metal wire 11 of the straight brush structure 1 and is parallel to the metal wire 11 .

[0059] 4) The spiral brush structure 2 is sheared by a cutting mechanism (not shown in the figure) to obtain a spiral multi-layer brush head.

[0060] In this embodiment, the metal wire 11 is a steel wire, and the bristles 12 are PP bristles.

[0061] The wire twisting mechanism is a commonly used technology in this field, and its structure and working method are not described in detail here.

[0062] Example 3

[0063] A multi-layer brush head is prepared by the method of Example 1, except that the multi-layer brush head consists of four layers of metal wires and five layers of bristle intervals.

[0064] Example 4

[0065] A multi-layer brush head is prepared by the method of Example 2, except that the multi-layer brush head consists of five layers of metal wires and four layers of bristle intervals.

[0066] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0067] Although the terms such as straight brush structure, wire, bristle, spiral brush structure are used more frequently in this article, these terms are used only to more conveniently describe and explain the essence of the present invention, and interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A method for preparing a multi-layer brush head, characterized in that: The following steps are involved: The metal wires (11) and the bristles (12) are arranged perpendicularly to each other and alternately stacked; The straight brush structure (1) with multiple layers of bristles is obtained by heating the surface of the bristles (12) and bonding them to the metal wire (11) and pressing them into shape.

2. A method for preparing a multi-layer brush head according to claim 1, characterized in that: The metal wires (11) are at least three layers, each layer of metal wires (11) comprises one or more metal wires (11) arranged in parallel, the bristles (12) are at least two layers, each layer of bristles (12) is sandwiched between two adjacent layers of metal wires (11), and the bristles (12) in each layer of bristles (12) are evenly arranged in parallel.

3. A method for preparing a multi-layer brush head according to claim 1, characterized in that: The metal wire (11) and the bristles (12) are respectively transmitted through the metal wire transmission mechanism (3) and the bristle transmission mechanism (4), and are overlapped downstream of the metal wire transmission mechanism (3).

4. A method for preparing a multi-layer brush head according to claim 1, characterized in that: The metal wire transmission mechanism (3) comprises roller devices (31) or metal wire clamping devices arranged on both sides of the metal wire (11) transmission path, and the bristle transmission mechanism (4) comprises a conveyor belt device (41) or a bristle feeding clamp arranged along the bristle (12) transmission path.

5. A method for preparing a multi-layer brush head according to claim 1, characterized in that: The bristles (12) and the metal wires (11) are bonded together by electromagnetic heating.

6. A method for preparing a multi-layer brush head according to claim 1, characterized in that: The bristles (12) and the metal wires (11) are formed by roller pressing.

7. A method for preparing a multi-layer brush head according to claim 1, characterized in that: The straight brush structure (1) is cut into a straight multi-layer brush head.

8. A method for preparing a multi-layer brush head according to claim 1, characterized in that: The formed straight brush structure (1) is twisted by a wire twisting mechanism to twist each metal wire (11) around the same axis to form a spiral brush structure (2) with multiple layers of bristles. The axis is located at the center of each metal wire (11) of the straight brush structure (1) and is parallel to the metal wire (11).

9. A method for preparing a multi-layer brush head according to claim 7, characterized in that: The spiral brush structure (2) is cut into a spiral multi-layer brush head.

10. A multi-layer brush head, characterized in that: The multi-layer brush head is prepared by the multi-layer brush head preparation method as described in claim 7 or 9.

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