Assembly line shearing fixture
By designing a cutting fixture for the assembly line, and utilizing contoured grooves and rulers to achieve precise positioning and rapid adjustment of the wire length, the problems of low cutting efficiency and poor consistency in existing technologies are solved, thereby improving production efficiency and product quality and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN HAI ELECTRONICS CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-07-07
AI Technical Summary
In current automotive wiring harness production, the cutting method is inefficient and makes it difficult to ensure the consistency of wire length, which affects production efficiency and product quality.
An assembly line shearing fixture was designed, comprising a table, a steel ruler, a slide rail, a slider, a sliding base plate, a finger cylinder, a tool holder, and a cutting blade. Precise positioning and rapid adjustment are achieved through contoured grooves and ruler markings, while stability and fixation are ensured by wing screws and rubber wheels.
It enables rapid and precise adjustment of conductor length, reduces measurement time, improves production efficiency and product quality, lowers costs, avoids worker fatigue, and significantly enhances economic benefits.
Smart Images

Figure CN224463615U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive wiring harness processing technology, and more specifically, to assembly line cutting fixtures. Background Technology
[0002] Automotive wiring harnesses are the core of a vehicle's electrical network; without them, there is no automotive electrical system. A wiring harness is an assembly consisting of copper-plated contact terminals crimped to wires and cables, then covered with a plastic-molded insulator or an outer metal shell, and bundled together to form a circuit connection. The wiring harness industry chain includes wires and cables, connectors, processing equipment, wiring harness manufacturing, and downstream application industries. Wiring harnesses have a wide range of applications, including automobiles, home appliances, computer and communication equipment, and various electronic instruments. Body wiring harnesses connect the entire vehicle body and are generally H-shaped. However, during automotive wiring harness production, the length of the purchased semi-finished wires needs to be adjusted based on customer-specified variations. Therefore, the dimensions of the purchased raw materials are often larger than the required length. After an order is placed, the semi-finished wiring harness assembly is trimmed to meet customer requirements. However, the current cutting method uses a steel ruler for comparison and measurement before using scissors for cutting, which is inefficient and makes it difficult to ensure consistent wire length after cutting. This also reduces production efficiency and affects the normal supply chain and the quality of delivered products. Therefore, we have proposed a wiring harness cutting fixture. Utility Model Content
[0003] In view of the problems mentioned in the background art above, the purpose of this utility model is to provide a cutting fixture for assembly lines.
[0004] To solve the above problems, this utility model adopts the following technical solution: an assembly line shearing fixture, including a table, a steel ruler on the top surface of the table, a mounting base fixedly connected to the back of the table, a slide rail fixedly installed on the top surface of the mounting base, two sliders slidably connected to the slide rail, a sliding base plate fixedly connected to the top surface of the two sliders, the end of the sliding base plate extending to the top of the table and fixedly installed with a finger cylinder, two output ends of the finger cylinder respectively fixedly connected with a blade holder, a cutting blade mounted on each of the two blade holders by bolts, a safety cover provided on the top surface of the sliding base plate and outside the finger cylinder, a cutting groove provided on the safety cover, a ruler mark provided on the end face of the safety cover, an origin positioning block fixedly connected to the top surface of the table, a contour groove provided on the origin positioning block, and a fixing mechanism provided on the sliding base plate.
[0005] As a preferred embodiment of this utility model, the fixing mechanism includes a screw hole opened on the top surface of the sliding base plate, and a wing screw is threaded onto the screw hole, with the bottom end of the wing screw abutting against the top surface of the table.
[0006] As a preferred embodiment of this utility model, the sliding base plate is provided with two rotating grooves, and rubber wheels are rotatably connected to the inner sides of the two rotating grooves. The bottom surface of the rubber wheels is in contact with the top surface of the platform.
[0007] As a preferred embodiment of this utility model, a control line is fixedly connected to the side of the finger cylinder, and the end of the control line is movably sleeved to the outside of the safety cover and fixedly connected to a foot switch.
[0008] As a preferred embodiment of this utility model, the zero point of the steel ruler is aligned with the position of the contour groove on the origin positioning block.
[0009] In a preferred embodiment of this utility model, the position of the ruler mark is aligned with the position of the two cutting blades.
[0010] The advantages of this utility model are as follows: By setting a contoured groove on the origin positioning block, the stability of the origin of the wire sheath end is ensured. The positions of the sliding base plate, finger cylinder, knife holder, and cutting blade can be adjusted through the cooperation of the slide rail and slider. At the same time, the cutting length of the wire can be quickly adjusted by using a ruler and steel ruler, reducing the time wasted in measuring dimensions during the cutting process. In addition, after the position of the sliding base plate is adjusted, it can be fixed by using screw holes, wing screws, and the table to ensure the stability of the knife holder when mass production begins. This effectively ensures that the distance between the origin of the wire sheath and the cutting blade remains stable, achieving precise positioning and rapid dimensional positioning adjustment, reducing labor time waste, avoiding hand fatigue from long-term operation, improving product quality, and significantly reducing costs compared to the original solution, thus significantly improving economic benefits. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of the front of this utility model.
[0012] Figure 2 This is a schematic diagram of the overall structure of the back of this utility model.
[0013] Figure 3 This is a schematic diagram of the structure of the safety cover of this utility model.
[0014] Figure 4 This is a schematic diagram of the structure of the sliding base plate of this utility model.
[0015] Figure 5 This is a schematic diagram of the cutting blade of this utility model.
[0016] Figure 6 This is a schematic diagram of the origin positioning block of this utility model.
[0017] The following are the labels in the diagram: 1. Tabletop; 2. Mounting base; 3. Slide rail; 4. Slider; 5. Sliding base plate; 6. Finger cylinder; 7. Knife holder; 8. Cutting knife; 9. Safety cover; 10. Cutting knife groove; 11. Ruler; 12. Steel ruler; 13. Origin positioning block; 14. Contour groove; 15. Fixing mechanism; 16. Screw hole; 17. Wing screw; 18. Control line; 19. Step switch; 20. Rotating groove; 21. Rubber wheel. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1
[0021] Please see Figure 1-6The assembly line shearing fixture includes a table 1, a steel ruler 12 on the top surface of the table 1, a mounting base 2 fixedly connected to the back of the table 1, a slide rail 3 fixedly installed on the top surface of the mounting base 2, two sliders 4 slidably connected to the slide rail 3, a sliding base plate 5 fixedly connected to the top surface of the two sliders 4, a finger cylinder 6 fixedly installed at the end of the sliding base plate 5 extending to the top of the table 1, and a blade holder 7 fixedly connected to the two output ends of the finger cylinder 6, with a cutting blade 8 bolted to each of the two blade holders 7, a safety cover 9 on the top surface of the sliding base plate 5 and outside the finger cylinder 6, a cutting groove 10 on the safety cover 9, a ruler mark 11 on the end face of the safety cover 9, an origin positioning block 13 fixedly connected to the top surface of the table 1, a contour groove 14 on the origin positioning block 13, and a fixing mechanism 15 on the sliding base plate 5.
[0022] In this embodiment, an external air supply pipe is used to supply air to the finger cylinder 6. At the same time, the safety cover 9 is provided with a hole for the air pipe to pass through. This is existing technology and will not be described in detail. In addition, the height of the contoured groove 14 is matched with the height of the bottom of the inner cavity of the cutter groove 10 to ensure that the cut wire can be in a horizontal state.
[0023] For details, please refer to Figure 4 and Figure 5 The fixing mechanism 15 includes a screw hole 16 on the top surface of the sliding base plate 5, and a wing screw 17 is threaded onto the screw hole 16. The bottom end of the wing screw 17 abuts against the top surface of the table 1.
[0024] In this embodiment, the bottom end of the wing screw 17 is brought into contact with the top surface of the platform 1 through the threaded engagement of the screw hole 16 and the wing screw 17, thereby using the squeezing force and friction between the platform 1 and the wing screw 17 to fix the sliding base plate 5.
[0025] For details, please refer to Figure 3 The sliding base plate 5 is provided with two rotating grooves 20, and rubber wheels 21 are rotatably connected to the inner side of each of the two rotating grooves 20. The bottom surface of the rubber wheels 21 is in contact with the top surface of the table 1.
[0026] In this embodiment, the rubber wheel 21 is used to support the sliding base plate 5, while ensuring that the sliding base plate 5 can move smoothly.
[0027] For details, please refer to Figure 2 and Figure 4A control line 18 is fixedly connected to the side of the finger cylinder 6. The end of the control line 18 is movably sleeved to the outside of the safety cover 9 and is fixedly connected to a foot switch 19.
[0028] In this embodiment, the finger cylinder 6 is controlled by a foot pedal switch 19, and the safety cover 9 is provided with a hole for the control wire 18 to pass through.
[0029] For details, please refer to Figure 1 and Figure 6 The zero point of the steel ruler 12 is aligned with the position of the contour groove 14 on the origin positioning block 13.
[0030] For details, please refer to Figure 5 The position of scale mark 11 is aligned with the positions of the two cutting blades 8.
[0031] In this embodiment, the value on the ruler 11 aligned with the steel ruler 12 is the position on the wire cut by the cutting blade 8.
[0032] Working principle: In use, first rotate the wing screw 17 to move its bottom end upward, releasing the fixation on the sliding base plate 5. At this time, push the sliding base plate 5 to move. The length of the wire to be cut is controlled by the cooperation of the ruler 11 and the steel ruler 12. Then, reverse the wing screw 17. The threaded engagement between the wing screw 17 and the screw hole 16 drives the wing screw 17 to move downward, so that the bottom end of the wing screw 17 abuts against the top surface of the table 1, thereby fixing the sliding base plate 5 again. Then, place the wire terminal sleeve to be cut into the contour groove 14 on the origin positioning block 13 for positioning. Pinch the end of the wire and straighten the wire into the cutter slot 10. Finally, control the finger cylinder 6 by stepping on the foot switch 19. The finger cylinder 6 drives the two blade holders 7 and the two cutting blades 8 to move closer to each other, thereby using the two cutting blades 8 to cut the wire.
[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.
Claims
1. A shearing fixture for an assembly line, including a table (1), characterized in that: A steel ruler (12) is provided on the top surface of the table (1). A mounting base (2) is fixedly connected to the back of the table (1). A slide rail (3) is fixedly installed on the top surface of the mounting base (2). Two sliders (4) are slidably connected on the slide rail (3). A sliding base plate (5) is fixedly connected to the top surface of the two sliders (4). The end of the sliding base plate (5) extends to the top of the table (1) and is fixedly installed with a finger cylinder (6). A knife holder (7) is fixedly connected to the two output ends of the finger cylinder (6). Cutting blades (8) are respectively installed on the two blade holders (7) by bolts. A safety cover (9) is provided on the top surface of the sliding base plate (5) and outside the finger cylinder (6). A cutting blade groove (10) is provided on the safety cover (9). A ruler (11) is provided on the end face of the safety cover (9). An origin positioning block (13) is fixedly connected to the top surface of the table (1). A contour groove (14) is provided on the origin positioning block (13). A fixing mechanism (15) is provided on the sliding base plate (5).
2. The assembly line shearing fixture according to claim 1, characterized in that: The fixing mechanism (15) includes a screw hole (16) on the top surface of the sliding base plate (5), and a wing screw (17) is threaded onto the screw hole (16), with the bottom end of the wing screw (17) abutting against the top surface of the table (1).
3. The assembly line shearing fixture according to claim 1, characterized in that: The sliding base plate (5) is provided with two rotating grooves (20), and the inner sides of the two rotating grooves (20) are rotatably connected with rubber wheels (21), and the bottom surface of the rubber wheels (21) is in contact with the top surface of the table (1).
4. The assembly line shearing fixture according to claim 1, characterized in that: The side of the finger cylinder (6) is fixedly connected to a control line (18), and the end of the control line (18) is movably sleeved to the outside of the safety cover (9) and fixedly connected to a foot switch (19).
5. The assembly line shearing fixture according to claim 1, characterized in that: The zero point of the steel ruler (12) is aligned with the position of the contour groove (14) on the origin positioning block (13).
6. The assembly line shearing fixture according to claim 1, characterized in that: The position of the ruler (11) is aligned with the position of the two cutting blades (8).