A length cutting device for a wiring harness

Abstract

The utility model provides a kind of fixed-length cutting device for wiring harness, comprising: base, the base upper surface is parallelly arranged two guide rails along length direction;Through the sliding unit, cutting mechanism and clamping mechanism are slidably arranged on guide rail;By setting cutting mechanism and clamping mechanism on the sliding unit that can slide along guide rail, and cooperating with electric push rod drive, the distance between clamping point and cutting point can be accurately adjusted, so as to realize high-precision fixed-length control to different length wiring harness, the consistency of cutting length and machining precision are significantly improved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive wiring harness technology, and more specifically, it relates to a fixed-length cutting device for wiring harnesses. Background Technology

[0002] In the electronics, electrical appliances, and automotive wiring harness manufacturing industry, wire harness length cutting is a critical step in the production process, and its processing accuracy directly affects subsequent assembly efficiency and product reliability. Traditional wire harness cutting methods mostly rely on manual measurement and manual cutting tools, which is not only inefficient and labor-intensive, but also results in poor consistency in cutting length, easily leading to material waste or product defects due to human error.

[0003] With the increasing demand for automation, some companies have begun to adopt fixed or semi-automatic cutting equipment. However, these types of equipment typically have a fixed structure and cannot flexibly adjust the cutting length, making it difficult to adapt to the production needs of different wire harness specifications. Especially in production scenarios where frequent changes in wire harness length specifications are required, the equipment adjustment process is cumbersome, time-consuming, and affects the overall production cycle.

[0004] Furthermore, during the cutting process, if the wire harness is not firmly clamped or accurately positioned, it is prone to slippage or vibration, resulting in uneven cuts, burrs, or even damage to the conductor, severely affecting the electrical performance and connection reliability of the wire harness. Existing clamping structures are mostly simple pressure block designs, with uneven clamping force distribution, which can easily damage the surface of the wire harness. Moreover, they lack effective limiting and support mechanisms, making it difficult to ensure the stability of the wire harness at the moment of cutting. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a fixed-length cutting device for wire harnesses, which solves the problems of existing wire harness cutting technology that cannot guarantee fixed-length cutting and fixed specifications.

[0006] A fixed-length cutting device for wire harnesses, comprising:

[0007] The base has two guide rails arranged parallel to each other along its length on its upper surface;

[0008] The cutting mechanism and clamping mechanism are slidably mounted on the guide rail via a sliding unit;

[0009] The clamping mechanism includes

[0010] A second U-shaped frame is fixedly installed above the sliding unit. A hydraulic cylinder assembly is fixedly installed on the upper part of the second U-shaped frame. A clamping block is fixedly installed at the output end of the hydraulic cylinder assembly. Multiple clamping protrusions are evenly arranged on the bottom of the clamping block. A second connecting seat is provided on one side of the second U-shaped frame.

[0011] The second receiving part is fixedly mounted on the sliding unit and located below the clamping block; the upper surface of the second receiving part is provided with a clamping groove corresponding to the clamping protrusion.

[0012] The baffle plate is fixed on the sliding unit and located behind the second receiving part;

[0013] The second electric push rod is fixedly mounted on one side of the base, and the output end of the second electric push rod is fixedly connected to the second connecting seat.

[0014] Furthermore, the sliding unit includes a connecting base plate, and sliders are provided on both sides of the connecting base plate, the sliders being fitted and slidably mounted on the guide rail.

[0015] Furthermore, the outer side of the guide rail is provided with a guide groove, and the inner side of the slider is provided with a guide protrusion; the slider is fitted into the guide groove.

[0016] Furthermore, the cutting mechanism includes a first U-shaped frame fixedly mounted above the sliding unit, a cylinder fixedly mounted in the upper middle part of the first U-shaped frame, and a cutter fixedly mounted on the output end of the cylinder via a first connecting plate; and a first receiving part fixedly mounted on the sliding unit, located below the cutter.

[0017] Furthermore, a first connecting seat is provided on the outer side of the first U-shaped frame; a first electric push rod is provided on one side of the base, and the movable end of the first electric push rod is fixedly connected to the first connecting seat.

[0018] Furthermore, the base is provided with a support assembly via a sliding unit. The support assembly is configured in two sets, located on both sides of the cutting mechanism. The support assembly includes a support block located in the middle of the sliding unit. Fastening bolts are inserted through one side of the sliding unit to fix the sliding unit.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) By setting both the cutting mechanism and the clamping mechanism on the sliding unit that can slide along the guide rail and driving it with an electric push rod, the distance between the clamping point and the cutting point can be precisely adjusted, thereby achieving high-precision fixed-length control of wire harnesses of different lengths, which significantly improves the consistency of cutting length and processing accuracy.

[0021] (2) By using a hydraulic cylinder group to drive the clamping block downwards in the clamping mechanism, and cooperating with the multiple clamping protrusions at the bottom of the clamping block and the clamping grooves on the second receiving part, a clamping structure with multiple points of uniform force is formed. This design not only improves the stability of clamping and prevents the wire harness from slipping or vibrating during the cutting process, but also effectively avoids damage to the outer sheath of the wire harness by dispersing the pressure, thus protecting the integrity of the wire harness. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the device;

[0023] Figure 2 This is a schematic diagram of the device from another angle;

[0024] Figure 3 This is a schematic diagram of the sliding unit structure;

[0025] Figure 4 This is a schematic diagram of the cutting mechanism.

[0026] Figure 5 This is a schematic diagram of the clamping mechanism.

[0027] Figure 6 This is a schematic diagram of the supporting component structure;

[0028] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0029] Base 1, guide rail 2, guide groove 21, sliding unit 3, connecting base plate 31, slider 32, guide protrusion 33, cutting mechanism 4, first U-shaped frame 41, cylinder 42, first connecting plate 43, cutter 44, first receiving part 45, clamping mechanism 5, second U-shaped frame 51, hydraulic cylinder group 52, clamping block 53, clamping protrusion 54, second receiving part 55, clamping groove 5501, baffle plate 56, support assembly 6, support block 61, fastening bolt 62, first electric push rod 7, first connecting seat 71, second electric push rod 8, second connecting seat 81. Detailed Implementation

[0030] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0031] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Example:

[0034] like Figures 1-6 As shown, a fixed-length cutting device for wire harnesses is an automated device suitable for precise length cutting of multiple parallel wire harnesses in fields such as automobiles and electronic equipment.

[0035] In this scheme, the base 1 serves as the fundamental support structure, constructed of high-strength steel, possessing excellent rigidity and vibration resistance. Two guide rails 2 are parallel to each other along the length of the upper surface of the base 1. These guide rails 2 not only serve as guiding elements but also bear the primary load-bearing function. Guide grooves 21 are provided on the outer sides of the guide rails 2, forming a fitted sliding engagement with the sliders 32 on the sliding unit 3. The sliding unit 3 includes a connecting base plate 31, with sliders 32 fixed to both sides. Guide protrusions 33 are provided on the inner sides of the sliders 32, embedding into the guide grooves 21 to form a precision guiding pair. This effectively prevents deviation, shaking, or jamming during movement, significantly improving sliding stability and positioning accuracy. This structural design allows the cutting mechanism 4, clamping mechanism 5, and support assembly 6 to move synchronously and smoothly along the guide rails 2, providing a reliable mechanical foundation for subsequent fixed-length adjustments.

[0036] The cutting mechanism 4 is mounted on the sliding unit 3 and structurally fixed by the first U-shaped frame 41. The first U-shaped frame 41 has high structural strength and can withstand the impact force generated when the cylinder 42 is working. The cylinder 42 is vertically mounted at the upper center of the first U-shaped frame 41, and its output end is connected to the first connecting plate 43, thereby driving the cutter 44 to perform vertical reciprocating motion. The cutter 44 is made of high-hardness alloy tool steel, and the cutting edge is precision ground, suitable for cutting wire harnesses of various materials such as copper core and aluminum core, with a smooth and burr-free cutting surface. A first receiving part 45 is provided directly below the cutter, and its surface can be provided with V-shaped or arc-shaped grooves adapted to the outer diameter of the wire harness, which can effectively support the wire harness to be cut and avoid the cutter directly contacting the metal substrate to avoid wear or chipping. The entire cutting action is driven by a pneumatic system, with fast response speed and controllable force, ensuring consistent cutting action each time and improving processing consistency.

[0037] Similar to the cutting mechanism 4, the clamping mechanism 5 is also mounted on the sliding unit 3, but its function focuses on the positioning and fixing of the wire harness. Its core structure is a second U-shaped frame 51, on which a hydraulic cylinder assembly 52 is fixed. The clamping action is driven by the stable pressure provided by the hydraulic system. The output end of the hydraulic cylinder assembly 52 is connected to a clamping block 53. The bottom of the clamping block has multiple evenly distributed clamping protrusions 54, arranged in a toothed pattern, capable of simultaneously clamping multiple wire harnesses arranged side-by-side. A second receiving part 55 is located directly below the clamping block. Its upper surface is machined with clamping grooves 5501 corresponding to the clamping protrusions. When the hydraulic cylinder presses down, the clamping protrusions embed into the grooves, forming a "tooth-groove" interlocking clamping structure, greatly enhancing the clamping force and anti-slip capability. Furthermore, a baffle plate 56 is located behind the second receiving part to prevent the wire harness from shifting backward, further improving positioning accuracy. This clamping structure is particularly suitable for multi-core, soft, or easily deformable wire harnesses, avoiding damage to the wire cores or cutting deviations due to uneven clamping.

[0038] To achieve flexible adjustment of the wire harness cutting length, this device incorporates an electric push rod drive system. Specifically, a first electric push rod 7 and a second electric push rod 8 are respectively installed on one side of the base 1. The movable end of the first electric push rod 7 is fixedly connected to the first connecting seat 71 on the cutting mechanism 4; the output end of the second electric push rod 8 is connected to the second connecting seat 81 on the clamping mechanism 5. By independently controlling the extension and retraction strokes of the two electric push rods, the relative positions of the cutting mechanism and the clamping mechanism on the guide rail can be adjusted respectively, thereby precisely setting the distance between them, which is the effective length of the wire harness to be cut. The control system can automatically adjust the push rod stroke according to preset parameters, enabling rapid changeover of wire harnesses of different specifications, greatly improving the versatility and production efficiency of the equipment.

[0039] To further enhance the overall stability during long wire harness processing and prevent the middle section from sagging due to its own weight, thus affecting the cutting quality, the device also symmetrically arranges two sets of support components 6 on both sides of the cutting mechanism 4. Each support component includes a support block 61, which is fixed in the middle of the sliding unit 3. Its upper surface can be provided with a smooth transition support surface or V-groove as needed to support the main body of the wire harness. The position of the support block can be adjusted by fastening bolts 62: after loosening the bolts, the entire sliding unit can slide on the guide rail. After adjusting to the appropriate position, the fastening bolts are tightened to achieve precise positioning of the support point. This design effectively avoids cut tilt or dimensional errors caused by bending deformation of the wire harness at the moment of cutting.

[0040] The working process of this device:

[0041] First, based on the target wire length, the extension and retraction of the first electric push rod 7 and the second electric push rod 8 are adjusted through the control system to determine the distance between the cutting mechanism and the clamping mechanism, and the sliding unit position is locked by the fastening bolt 62. Then, the wire harness to be processed is laid straight on the first receiving part, the support block, and the second receiving part, with the front end abutting against the stop plate 56 for initial positioning. Next, the hydraulic cylinder group 52 is activated, driving the clamping block 53 downwards, so that the clamping protrusion 54 engages with the clamping groove 5501, firmly clamping the wire harness. After the clamping is stable, the cylinder 42 actuates, driving the cutter 44 to fall vertically, completing the cutting action with the support of the first receiving part 45. After cutting, the cylinder and hydraulic cylinder reset sequentially, and the finished wire harness can be removed.

[0042] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A fixed-length cutting device for wire harnesses, characterized in that, include: Base (1), two guide rails (2) are arranged parallel to each other along the length direction on the upper surface of the base (1); The cutting mechanism (4) and the clamping mechanism (5) are slidably mounted on the guide rail (2) via the sliding unit (3); The clamping mechanism (5) includes A second U-shaped frame (51) is fixedly installed above the sliding unit (3). A hydraulic cylinder group (52) is fixedly installed on the upper part of the second U-shaped frame (51). A clamping block (53) is fixedly installed at the output end of the hydraulic cylinder group (52). A plurality of clamping protrusions (54) are evenly arranged at the bottom of the clamping block (53). A second connecting seat (81) is provided on one side of the second U-shaped frame (51). The second receiving part (55) is fixedly disposed on the sliding unit (3) and located below the clamping block (53); the upper surface of the second receiving part (55) is provided with a clamping groove (5501) corresponding to the clamping protrusion (54). The baffle (56) is fixed on the sliding unit (3) and located behind the second receiving part (55); The second electric push rod (8) is fixedly installed on one side of the base (1), and the output end of the second electric push rod (8) is fixedly connected to the second connecting seat (81).

2. The fixed-length cutting device for wire harnesses as described in claim 1, characterized in that: The sliding unit (3) includes a connecting base plate (31), and sliders (32) are provided on both sides of the connecting base plate (31). The sliders (32) are fitted and slidably disposed on the guide rail (2).

3. The fixed-length cutting device for wire harnesses as described in claim 2, characterized in that: The guide rail (2) has a guide groove (21) on its outer side, and the slider (32) has a guide protrusion (33) on its inner side; the slider (32) is fitted into the guide groove (21).

4. The fixed-length cutting device for wire harnesses as described in claim 1, characterized in that: The cutting mechanism (4) includes a first U-shaped frame (41) fixedly mounted above the sliding unit (3), a cylinder (42) fixedly mounted in the upper middle part of the first U-shaped frame (41), and a cutter (44) fixedly mounted at the output end of the cylinder (42) through a first connecting plate (43); and a first receiving part (45) fixedly mounted on the sliding unit (3) and located below the cutter (44).

5. A fixed-length cutting device for wire harnesses as described in claim 4, characterized in that: A first connecting seat (71) is provided on the outer side of the first U-shaped frame (41); a first electric push rod (7) is provided on one side of the base (1), and the movable end of the first electric push rod (7) is fixedly connected to the first connecting seat (71).

6. A fixed-length cutting device for wire harnesses as described in claim 1, characterized in that: The base (1) is provided with a support assembly (6) via a sliding unit (3). The support assembly (6) is configured in two groups, located on both sides of the cutting mechanism (4). The support assembly (6) includes a support block (61), which is located in the middle of the sliding unit (3). A fastening bolt (62) is inserted on one side of the sliding unit (3) to fix the sliding unit (3).

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