Novel ring cutter for wire stripping
By designing a circumcision tool with a V-shaped blade body, the poor cutting effect and wire offset of automated wire stripping equipment when stripping the outer insulation layer of twisted pair are solved, and more stable and accurate wire stripping operation is achieved , reduces the risk of tool damage.
Patent Information
- Application Number
- CN202310840762.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-10
- Publication Date
- 2025-01-10
AI Technical Summary
When the existing automated wire stripping equipment strips the outer insulating layer of twisted pair wires, the cutting effect is poor, and it is easy to leave residues. The wire is offset due to uneven force, which affects the wire stripping accuracy.
A circumcision tool with a V-shaped blade body is designed, including symmetrical first and second blades. The blade body gradually reduces its thickness to form a V-shaped structure, and a edge portion with a larger thickness is provided at both ends of the blade body. To improve the mechanical strength and balance of the tool, the cable is automatically centered during the stripping process.
The V-shaped edge increases the force balance and the blade stress area during stripping, reduces the risk of tool damage, improves the stability and accuracy of stripping, and reduces the residual of the outer insulation layer.
Smart Images
Figure CN119297857A_ABST
Abstract
Description
Technical Field
[0001] This patent application relates to the production and processing technology of electrical connection devices, and in particular to a new type of ring cutter for wire stripping. Background Art
[0002] The field of vehicle electrical and electronic architecture (EEA) consists of wiring harness products and various electronic devices connected to them (e.g., electronic control units, sensors, actuators). Wiring harness products include multiple wires for transmitting power and electrical signals. At the end of the wires, the insulation layer is removed to expose the internal conductor (e.g., a solid copper conductor or a conductive bundle of multiple wires). The conductor is then connected to the terminal of the line end connector (connector) through connection techniques such as crimping and welding. The line end connector is then plugged into the matching connector (which can be another line end connector or a device end connector) to form a mechanical connection and electrical connection.
[0003] In traditional wire harness production lines, the wire stripping operation is performed by workers using specific wire stripping tools. However, with the continuous improvement of the degree of automation of production lines, automated equipment for wire stripping has been developed to replace manual wire stripping operations. Specifically, first, an actuator such as a piston cylinder or an electric cylinder can be used to push the circular cutter to cut into the insulation of the wire from one or more positions to form a stripping cut. Subsequently, the equipment drives the circular cutter to rotate, thereby completely cutting off the insulation.
[0004] Figure 1 A flat-edged circular cutter 100 used in an existing rotary wire stripping device is shown. The flat-edged circular cutter 100 comprises a blade body and a blade, wherein the blade is located at the end of the blade body and has a gradually decreasing thickness, and the cutting edge of the blade is flat. Figure 2 Demonstrates the use of two Figure 1 The schematic diagram of the flat-edge circular cutter 100 performing wire stripping is shown. As shown in the figure, the two cutter heads 100A and 100B can approach the wire relative to each other.
[0005] When the wire to be stripped is a twisted pair 400, the outer insulation layer of the twisted pair 400 needs to be stripped first, and the wire cores twisted together are left for later processing (for example, using other tools for automatic stripping, manual stripping, or directly inserting a stripping-free terminal). Figure 3A schematic diagram of using two flat-edged circular cutters 100A and 100B to strip the outer insulation layer 410 of a twisted pair 400 is shown, and the wire cores 431 and 432 are wrapped in the outer insulation layer 410. In production practice, in order to avoid damaging the twisted wire cores 431 and 432 inside the twisted pair 400, the cutting depth of the flat-edged circular cutter 100 is usually set shallower. In addition, when using two flat-edged circular cutters 100A and 100B, the conductor may shift in position due to uneven force, further affecting the accuracy of wire stripping. Therefore, after the stripping operation is completed, there may be residue. Figure 4 Shows the outer insulation remaining after the wire stripping operation is completed.
[0006] A better circular cutter is desired to improve the cutting effect of the wire stripping operation. Summary of the invention
[0007] According to one aspect of the present application, a circular cutting tool for an automatic wire stripping device is proposed, comprising: a blade body; a blade formed at the end of the blade body, wherein the blade has a V-shaped blade body, the V-shaped blade body comprises a first blade body and a second blade body, and the first blade body and the second blade body are each formed by gradually reducing the thickness of the tool material starting from the blade body.
[0008] In the above-mentioned scheme of the circular cutting tool, as a further implementation method, the blade includes a first blade formed at the first end of the blade body.
[0009] In the above-mentioned scheme of the circular cutting tool, as a further implementation method, the blade also includes a second blade formed at the second end of the blade body, and the first blade and the second blade have structures symmetrical to each other.
[0010] In the above-mentioned scheme of the circular cutting tool, as a further implementation method, the width of the V-shaped blade is smaller than the width of the blade body.
[0011] In the above-mentioned scheme of the circular cutting tool, as a further implementation method, a first edge portion and a second edge portion of a certain width are respectively provided at both ends of the V-shaped blade body.
[0012] In the above-mentioned scheme of the circular cutting tool, as a further implementation method, the first edge portion and the second edge portion each include a front edge and a side edge, and the front edge and the side edge form a right angle or an obtuse angle.
[0013] In the above-mentioned scheme of the circular cutting tool, as a further implementation method, the first edge portion and the second edge portion are formed by gradually reducing the thickness of the tool material starting from the blade body, and the front edges of the first edge portion and the second edge portion are not sharpened.
[0014] In the above-mentioned scheme of the circular cutting tool, as a further implementation method, the front thickness of the first edge portion and the second edge portion is greater than the front thickness of the V-shaped blade body.
[0015] According to one aspect of the present application, an automatic wire stripping device is provided, characterized in that it comprises at least two circular cutting knives as described above, wherein the automatic wire stripping device is used to apply the two circular cutting knives to the cable to be stripped opposite to each other.
[0016] In the above-mentioned automatic wire stripping device solution, as a further implementation method, the automatic wire stripping device is used to form a local incision on the insulating outer layer of the cable through two circular cutting tools, and rotate the two circular cutting tools to completely cut off the insulating outer layer.
[0017] In the above-mentioned scheme of the circular cutting tool or automatic wire stripping equipment, by changing the cutting edge from a traditional flat cutting edge to a V-shaped cutting edge, the force on the cable is increased from a two-force balance to a four-force balance, so that the cable can be automatically centered and is not easily deviated.
[0018] In the above-mentioned circular cutting tool or automatic wire stripping device solution, by changing the cutting edge from a traditional flat cutting edge to a V-shaped cutting edge, the force-bearing area of the blade during wire stripping is increased, thereby reducing the risk of blade damage.
[0019] In the above-mentioned circular cutting tool or automatic wire stripping device solution, the V-shaped cutting edge can provide a force perpendicular to the feed direction (X direction), so that the cable is automatically centered and the cutting is more stable. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The accompanying drawings are included to provide a further understanding of the present application. They are incorporated into and constitute a part of the present application. The accompanying drawings illustrate embodiments of the present application and together with the description serve to explain the principles of the present application.
[0021] In the attached figure:
[0022] Figure 1 This is a real photo of a flat-edge circular cutter that has been put into production.
[0023] Figure 2 yes Figure 1 Schematic diagram of a flat edge circular cutter used in a wire cutting operation.
[0024] Figure 3 yes Figure 1 The schematic diagram of the flat-edge ring cutter used for cutting twisted pair wires is shown.
[0025] Figure 4 Is adopted Figure 1 The picture shown is the effect of the flat-edge circular cutter cutting the twisted pair wire.
[0026] Figure 5 A schematic diagram showing a circular cutting knife with a V-shaped cutting edge according to an embodiment of the present application.
[0027] Figure 6 yes Figure 5 The schematic diagram of the V-shaped cutting edge ring cutter used for cutting the outer insulation layer of a twisted pair cable is shown.
[0028] Figure 7 yes Figure 5 The diagram shown is an analysis diagram of the force applied when a V-shaped cutting edge ring cutter is used to cut the outer insulation layer of a twisted pair cable.
[0029] Figure 8 yes Figure 5 A real photo of the V-edge circular cutting knife shown.
[0030] Fig. 9 Is adopted Figure 5 The V-shaped cutting edge circular cutter shown is a diagram showing the effect of cutting a twisted pair wire. DETAILED DESCRIPTION
[0031] In the following description, this patent application is described with reference to various embodiments. However, those skilled in the art will recognize that various embodiments can be implemented without one or more specific details or with other replacement and / or additional methods, materials or components. In other cases, well-known structures, materials or operations are not shown or described in detail to avoid obscuring aspects of the various embodiments of this patent application. Similarly, for the purpose of explanation, specific quantities, materials and configurations are set forth to provide a comprehensive understanding of the embodiments of this patent application. However, this patent application can be implemented without specific details. In addition, it should be understood that the various embodiments shown in the drawings are illustrative representations and are not necessarily drawn to scale.
[0032] The various embodiments and variations of the present patent application are further described below in conjunction with the accompanying drawings.
[0033] Figure 5 A schematic diagram showing a circular cutting knife 200 with a V-shaped cutting edge according to an embodiment of the present application. Figure 6 yes Figure 5 The V-shaped cutting edge ring cutter 200 is a schematic diagram of a cutting operation of an outer insulation layer 410 of a twisted pair cable 400. Figure 7 yes Figure 5 The V-shaped cutting edge ring cutter 200 is shown in a diagram for analyzing the force applied when cutting the outer insulation layer 410 of the twisted pair cable 400. Figure 8 yes Figure 5 A real photo of the V-shaped cutting edge cutting knife 200 is shown.
[0034] like Figure 5As shown, the V-shaped cutting blade 200 includes a blade body 210 and a blade edge 220 formed at an end of the blade body 210 . Figure 5 The circular cutter 200 is a double-head design, that is, a blade 220A is formed at the left end of the blade body 210, and a blade 220B is formed at the right end of the blade body 210. The blades 220A and 220B have structures symmetrical to each other, so the tool material utilization rate of the circular cutter 200 can be improved, the tool life is increased, and the use cost is reduced. However, it is understandable that the blade structure can be formed only at one end of the circular cutter 200, for example, only the blade 220A, or only the blade 220B.
[0035] The structure of the V-shaped blade body is described below using the blade 220A as an example. Figure 5 As shown, the V-shaped blade 225 includes an upper blade 2251 and a lower blade 2252 that are symmetrical to each other. The upper blade 2251 and the lower blade 2252 are each formed by gradually reducing the thickness of the tool material starting from the blade body 210. The upper blade 2251 and the lower blade 2252 are each at an angle to the width direction of the blade body 210, so that the cutting edge of the upper blade 2251 and the cutting edge of the lower blade 2252 form a V-shaped structure with each other. The width of the V-shaped blade 225 (the vertical length along the width direction of the blade body 210) can be smaller than the width of the blade body 210, that is, at both ends of the V-shaped blade 225, an upper edge 2241 and a lower edge 2242 of a certain width are respectively left. The upper edge 2241 includes a front edge and an upper side edge, and the front edge and the upper side edge can be at a right angle, or at an obtuse angle greater than 90 degrees. The lower edge 2242 includes a front edge and a lower side edge, and the front edge and the lower side edge may form a right angle or an obtuse angle greater than 90 degrees. It can be understood that the upper edge 2241 and the lower edge 2242 are also formed by gradually reducing the thickness of the tool material starting from the blade 210, but the minimum thickness of the upper edge 2241 and the lower edge 2242 is greater than the minimum thickness of the upper blade body 2251 and the lower blade body 2252, that is, the front end direction of the upper edge 2241 and the lower edge 2242 is not sharpened.
[0036] By providing an upper edge 2241 and a lower edge 2242 with greater thickness on both sides of the circular cutter 200, the peripheral mechanical structure of the V-shaped blade 225 of the circular cutter 200 can be strengthened, thereby protecting the V-shaped blade 225 with a weaker structure during use.
[0037] Figure 6 yes Figure 5 The V-shaped cutting edge cutting knife 200 is used for cutting the outer insulation layer 410 of the twisted pair 400. Figure 6It can be seen that the two V-shaped cutting blades 200A and 200B contact the twisted pair 400 from opposite directions, and the upper blade 2251 and the lower blade 2252 of each cutting blade contact the outer insulation layer 410 of the twisted pair 400.
[0038] Figure 7 yes Figure 5 The V-shaped cutting edge cutting knife 200 is used for cutting the outer insulation layer of the twisted pair 400. Figure 7 As shown, the upper blade and the lower blade of the left circular cutter 200A apply a pair of forces F2 of equal magnitude and symmetrical in the vertical direction to the twisted pair 400, and the upper blade and the lower blade of the right circular cutter 200B apply a pair of forces F4 of equal magnitude and symmetrical in the vertical direction to the twisted pair 400.
[0039] The forces applied by the circular cutter 200A and the circular cutter 200B to the twisted pair 400 should be zero in the X direction (feed direction) and the Y direction, that is, in the X direction, F1*cosa+F2*cosa=F3*cosa+F4*cosa, and in the Y direction, F1*sina+F2*sina=F3*sina+F4*sina. It can be understood that since the two components of force provided by the V-shaped blade in the Y direction cancel each other out, the V-shaped blade can provide a force perpendicular to the feed direction (X direction) to automatically center the cable. Compared to Figure 2 The stress condition shown in Figure 7 Under the stress condition, the cable force is increased from two-force balance to four-force balance, so that the cable can be automatically centered, not easy to deviate, and the cutting process is more stable.
[0040] Further comparison Figure 3 and Figure 6 It can be understood that the V-edge cutting knife 200 increases the force-bearing area of the blade compared to the flat-edge cutting knife 100, reduces the pressure on the tool, and reduces the risk of tool damage.
[0041] Fig. 9 Is adopted Figure 5 The effect of the V-shaped cutting edge ring cutter 200 cutting the twisted pair wire is shown. Fig. 9 and Figure 4 By comparison, it can be seen that when the V-shaped cutting edge cutter 200 is used, less outer insulation layer 410 of the twisted pair remains.
[0042] Although the twisted pair cable is used as an example to describe the cable to be cut, it can be understood that the V-shaped blade ring cutter 200 proposed in the present application can be used for the stripping operation of any cable with an outer insulation layer.
[0043] The present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or multiple times in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.
[0044] In the context of this application, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements.
[0045] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more application embodiments, in the above description of the embodiments of this application, multiple features are sometimes merged into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.
[0046] The basic concepts have been described above. Obviously, for those skilled in the art, the above disclosure is only for example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the embodiments of the present application.
Claims
1. A circular cutting tool for an automatic wire stripping device, comprising: Blade (210); A blade (220) is formed at the end of the blade body, wherein the blade has a V-shaped blade body (225), and the V-shaped blade body includes a first blade body (2251) and a second blade body (2252), The first blade body and the second blade body are each formed by gradually reducing the thickness of the tool material starting from the blade body.
2. The circular cutting tool according to claim 1, characterized in that: The blade (220) includes a first blade (220A) formed at a first end of the blade body.
3. The circular cutting tool according to claim 2, characterized in that: The blade (220) further comprises a second blade (220B) formed at the second end of the blade body, and the first blade and the second blade have structures symmetrical to each other.
4. The circular cutting tool according to claim 1, characterized in that: The width of the V-shaped blade is smaller than the width of the blade body.
5. The circular cutting tool according to claim 1, characterized in that: A first edge portion (2241) and a second edge portion (2242) of a certain width are respectively provided at both ends of the V-shaped blade.
6. The circular cutting tool according to claim 5, characterized in that: The first edge portion and the second edge portion each include a front edge and a side edge, and the front edge and the side edge form a right angle or an obtuse angle.
7. The circular cutting tool according to claim 5, characterized in that: The first edge portion and the second edge portion are formed by gradually reducing the thickness of the tool material starting from the blade body, and the front edges of the first edge portion and the second edge portion are not sharpened.
8. The circular cutting tool according to claim 5, characterized in that: The front thickness of the first edge portion and the second edge portion is greater than the front thickness of the V-shaped blade.
9. An automatic wire stripping device, characterized in that: The automatic wire stripping device comprises at least two circular cutting knives as claimed in claims 1 to 8, wherein the automatic wire stripping device is used to apply the two circular cutting knives to the cable to be stripped opposite to each other.
10. The automatic wire stripping device according to claim 9, characterized in that: The automatic wire stripping device is used to form a partial incision on the insulating outer layer of the cable by means of two circular cutting knives, and rotate the two circular cutting knives to completely cut off the insulating outer layer.