Cutting device and method for automobile wire harness processing

Abstract

The invention relates to the technical field of wire harness processing, in particular to a cutting device and method for automobile wire harness processing. The device comprises a base, a wire tensioning mechanism, a wire cutting mechanism and a wire penetrating mechanism, a front row of grooves and a rear row of grooves are formed in a panel of the base in a staggered mode, extending strips with wrapping posts are arranged on a front strip base and a rear strip base of the wire tensioning mechanism, the wrapping posts stretch out of the grooves and are driven by a linkage mechanism to achieve synchronous reverse movement, the wrapping posts are separated from the crossed state to tension a wire harness, and the wire harness is cut off. A front tool apron and a rear tool apron of the wire cutting mechanism are provided with cutters aligned with the wrapping posts, and a sliding block of the wire penetrating mechanism can carry the ends of the wire harnesses to penetrate through the crossed area of the wrapping posts. By means of the linkage design of cross threading and reverse tensioning, batch automatic threading of multiple wire harnesses is achieved; and due to the staggered grooves and columns, the cutting points of the front row and the rear row are staggered and do not interfere with each other, the structure is compact, and the space can be utilized to the maximum extent.

Description

Technical Field

[0001] This invention relates to the field of wire harness processing technology, specifically to a cutting device and method for automotive wire harness processing. Background Technology

[0002] Automotive wiring harnesses are a crucial component of automotive electrical systems. Cutting long coils of wire to specified lengths is the primary and most demanding process in wiring harness manufacturing. Currently, the industry primarily employs the following technical solutions and their limitations for cutting multiple wire harnesses to the same length: Single-machine sequential operation mode: This mode uses a conventional wire cutter to feed and cut wires one by one. This mode has a very low degree of automation, relies on manual operation, is inefficient, and makes it difficult to ensure the consistency of length among multiple wire segments within a batch.

[0003] Multi-blade fixed cutting equipment: This type of equipment has multiple fixed cutters, which can cut multiple wire harnesses at once. However, the cutter positions are not easy to adjust, and it is inconvenient to adjust the cutter spacing to a suitable size according to production needs. In addition, this type of equipment occupies a lot of space and cannot make efficient use of space.

[0004] Therefore, there is an urgent need for a new type of cutting device and method for automotive wiring harness processing, which can provide an effective solution to the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to provide a cutting device and method for automotive wiring harness processing to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A cutting device for automotive wiring harness processing includes a base, a wire tensioning mechanism, a wire cutting mechanism, and a wire threading mechanism. The base includes a rectangular panel and a pair of support plates disposed on the front and rear sides of the panel; the front and rear sides of the panel are respectively provided with front grooves and rear grooves of the same size and shape, the front grooves and rear grooves are arranged alternately in the left and right directions, and the rear end of the front grooves and the front end of the rear grooves are staggered in the front and rear directions. The wire tensioning mechanism includes a front strip seat and a rear strip seat, which are arranged in front and back respectively. The front strip seat has a row of extension strips extending backward, and the rear strip seat has a row of extension strips extending forward. The ends of the extension strips on both the front and rear strip seats are provided with winding posts extending vertically upward. The winding posts on the front strip seat extend from the front row groove, and the winding posts on the rear strip seat extend from the rear row groove. The front and rear strip seats are driven by a wire tensioning motor fixedly mounted on the panel to move synchronously in opposite directions in the front and rear directions through a linkage mechanism. The cutting mechanism includes two rows of knife holders placed front and back. A cutting blade is fixedly installed on the knife holder. The cutting blade on the front knife holder is located directly above the front row of slots and the blade edge is directly facing the winding post on the front strip seat. The cutting blade on the rear knife holder is located directly above the rear row of slots and the blade edge is directly facing the winding post on the rear strip seat. The threading mechanism includes horizontally arranged slide rails on the left and right sides. The slide rails are located above the panel, and the left and right ends of the slide rails are fixedly installed at the center of the left and right sides of the panel, respectively. The sliders that are slidably installed on the slide rails are driven to move left and right by the threading motor.

[0007] Furthermore, the linkage mechanism includes a pair of forward and reverse bidirectional lead screws respectively rotatably mounted on the left and right ends of the lower surface of the panel. The front and rear sections of the forward and reverse bidirectional lead screws rotate in opposite directions. The front section of the forward and reverse bidirectional lead screws is helically connected to the front bar seat, and the rear section of the forward and reverse bidirectional lead screws is helically connected to the rear bar seat. One of the forward and reverse bidirectional lead screws is driven by the output shaft of the tensioning motor. The forward and reverse bidirectional lead screws on the left and right sides are driven synchronously by the first synchronous pulley and the first synchronous belt.

[0008] Furthermore, each of the left and right ends of the tool holder is provided with a downwardly extending seat edge, and each of the left and right sides of the panel is provided with a downwardly extending side plate edge. Each of the two side plate edges is rotatably mounted with a bidirectional screw with a forward and reverse thread. The front end of the bidirectional screw with a forward and reverse thread rotates in opposite directions to the rear end. The front end of the bidirectional screw with a forward and reverse thread is threadedly connected to the seat edge on the front tool holder, and the rear end of the bidirectional screw with a forward and reverse thread is threadedly connected to the seat edge on the rear tool holder. The bidirectional screws with a forward and reverse thread on the left and right sides are driven synchronously by the second synchronous pulley and the second synchronous belt.

[0009] Furthermore, a handle is fixedly installed on one end of one of the bidirectional screws, and a locking screw is installed on the handle.

[0010] Furthermore, the threading motor drives the slider to move left and right through a horizontal lead screw transmission. The slider is equipped with a wire clamping seat, and an electric telescopic cylinder is fixedly installed on the wire clamping seat. A wire clamping head is fixedly installed at the end of the electric telescopic cylinder.

[0011] A cutting method for automotive wiring harness processing includes the following steps: Step 1, Threading: The slider is in the initial position and clamps one or more wire bundles to be cut at one end. Driven by the threading motor, the slider guides one or more wire bundles to be cut along the upper surface of the panel from the center of one end of the panel to the center of the other end. Step 2, Wire Tensioning and Cutting: Start the wire tensioning motor, which drives the front and rear strip seats to move synchronously in opposite directions to the end position through the linkage mechanism. This causes the winding post to stretch the wire harness back and forth until the wire harness reaches the set tension state. When the winding post reaches the set maximum stroke at the front or rear end, it just touches the cutting blade. The front and rear rows of cutters cut the wire harness at the winding post at the same time, resulting in multiple wire harness segments of equal length. Step 3, Material Sorting and Collection: After cutting, the wire harness segments are sorted and collected in order by manual labor or auxiliary tools; Step 4, Reset: Start the tensioning motor, which drives the front and rear strip seats to move synchronously in opposite directions to the initial position through the linkage mechanism. Start the threading motor to drive the slider to move along the slide rail to the initial position, preparing for the next cutting operation.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves automated batch threading of multiple wire harnesses through the collaborative design of "intersecting column initial layout, central threading path, and reverse separation tensioning"; the staggered arrangement of slots and columns ensures that the cutting points of the front and rear rows are staggered and do not interfere with each other, resulting in a compact structure that maximizes the utilization of space.

[0013] 2. This invention adopts a linkage method of double positive and negative rotary screws plus synchronous belt, which has a stable and reliable structure and precise transmission. It ensures that the front and rear winding columns can move in opposite directions at a strict synchronous distance, thereby applying completely uniform tension to multiple wire bundles, avoiding the difference in cutting length caused by uneven tension, and improving product quality.

[0014] 3. This invention employs a linkage between a bidirectional screw with positive and negative wires and a second synchronous belt. The two bidirectional screws with positive and negative wires rotate synchronously. When the screws rotate, the front and rear rows of cutter holders move closer to or further away from each other at the same speed, thereby changing the relative distance between the front and rear rows of cutters and the preset termination position of the corresponding winding post. This allows for convenient and flexible adaptation to the cutting of wire harnesses of different specifications and lengths, strong versatility, and a simple and intuitive adjustment process. Furthermore, the synchronization mechanism ensures the symmetry of the front and rear cutting points, ensuring that the cut wire segments are of equal length. Attached Figure Description

[0015] Figure 1 A three-dimensional structural schematic diagram of a cutting device and method for processing automotive wiring harnesses; Figure 2 A bottom view of a cutting device and method for processing automotive wiring harnesses; Figure 3 This is a top view of the base; Figure 4 This is a schematic diagram of the thread cutting mechanism; Figure 5 A schematic diagram of the screw handle and locking screw; Figure 6This is a schematic diagram of the initial position of the tensioning mechanism; Figure 7 A schematic diagram of the termination position of the tensioning mechanism; Figure 8 This is a schematic diagram of the threading mechanism; Figure 9 This is a schematic diagram of the slider's structure.

[0016] In the diagram: 101, panel; 102, support plate; 103, side plate edge; 104, front row groove; 105, rear row groove; 201, knife holder; 202, cutter; 203, seat edge; 204, bidirectional screw; 205, second synchronous pulley; 206, second synchronous belt; 207, handle; 208, locking screw; 301, tensioning motor; 302, bidirectional screw; 303, first synchronous pulley; 304, first synchronous belt; 305, winding post; 306, rear strip seat; 307, front strip seat; 308, extension strip; 401, slide rail; 402, threading motor; 403, horizontal screw; 404, slider; 405, wire clamp seat; 406, electric telescopic cylinder; 407, wire clamp head. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1 Please refer to 1-9. A cutting device for automotive wiring harness processing mainly consists of a base, a wire tensioning mechanism, a wire cutting mechanism, and a wire threading mechanism.

[0019] The base includes a rectangular panel 101 and a pair of support plates 102 located on the front and rear sides of the panel 101, providing support for the entire device. Figure 3 As shown, the front and rear sides of panel 101 are respectively machined with front grooves 104 and rear grooves 105 of the same size and shape. These grooves are arranged at intervals in the left-right direction, and importantly, the rear end of the front groove 104 and the front end of the rear groove 105 are staggered in the front-back direction. This staggered layout is the basis of the entire wiring logic.

[0020] The tensioning mechanism (such as) Figure 6 , Figure 7 (As shown) is located below panel 101. (As indicated) Figure 6As shown, in the initial position of the device, the front winding seat 307 and the rear winding seat 306 are close to each other. At this time, the winding post 305 on the front winding seat 307 (extending from the rear row groove 104) is actually located behind the winding post 305 on the rear winding seat 306 (extending from the rear row groove 105) in the front-rear direction. Therefore, from the top view, the front and rear rows of winding posts 305 present a cross-arrangement on the horizontal plane, rather than a simple parallel alignment.

[0021] The threading mechanism (such as) Figure 8 As shown, the panel 101 includes a horizontally positioned slide rail 401 fixedly installed at the center of the panel 101. The slider 404 is driven by a wire-threading motor 402 and can move along the slide rail 401 from the center of the left side of the panel 101 to the center of the right side. Its movement trajectory passes through the intersection area formed by the two rows of winding posts 305.

[0022] The working principle of this embodiment: At the start of operation, the tensioning mechanism is in its initial position ( Figure 6 The front and rear winding posts 305 are arranged in a crossed state. Operators or automated equipment only need to clamp the ends of one bundle (or multiple strands) of cable to be cut onto the wire clamping head 407 of the threading mechanism at once. The threading motor 402 is started, driving the slider 404 to carry the cable bundle ends from the center of one end of the panel to the center of the other end at a uniform speed. Since the slider 404's movement path passes through the crossed area of ​​the winding posts 305, the cable bundle will naturally and effortlessly pass through the crossed winding posts 305 during the movement, eliminating the need for manual winding of each cable individually, greatly simplifying the operation.

[0023] After threading is complete, the tension motor 301 is started. The linkage mechanism drives the front strip holder 307 and the rear strip holder 306 to move synchronously in opposite directions (the front strip holder moves forward, and the rear strip holder moves backward). As the two separate, the originally crossed winding posts 305 unfold on the horizontal plane, automatically stretching and straightening the wire bundle passing through them to both ends until the set tension is reached. Figure 7 When the winding post 305 moves to the set termination position, its top just contacts the fixed cutting edge of the cutter 202 above, and the wire harness is instantly cut while under tension. After cutting, the tensioning mechanism reverses and resets to the crossed state, and the cut wire segments fall off. The threading mechanism also returns to its initial position, and the next cycle can begin.

[0024] This embodiment achieves automated batch threading of multiple wire harnesses through the collaborative design of "initial layout of cross columns, central threading path, and reverse separation tensioning"; the staggered arrangement of slots and columns ensures that the cutting points of the front and rear rows are staggered and do not interfere with each other, resulting in a compact structure that maximizes the use of space.

[0025] Example 2 The difference from Embodiment 1 is that, asFigure 2 , Figure 6 and Figure 7 As shown, the specific implementation of the linkage mechanism is as follows: A forward and reverse bidirectional lead screw 302 is rotatably mounted at each of the left and right ends of the lower surface of the panel 101. The front and rear sections of each lead screw 302 have opposite thread directions. The front section of the lead screw 302 is threaded to the front bar seat 307, and the rear section is threaded to the rear bar seat 306. One of the forward and reverse bidirectional lead screws 302 is directly connected to the output shaft of the tension motor 301 via a coupling or other components. The two forward and reverse bidirectional lead screws 302 on the left and right sides achieve synchronous rotation through a set of first synchronous pulleys 303 and a first synchronous belt 304.

[0026] Working Principle: When the tensioning motor 301 starts, it drives the connected bidirectional lead screw 302 to rotate. Due to the transmission of the first synchronous belt 304 and the first synchronous pulley 303, the lead screw 302 on the other side rotates synchronously in the same direction. Since the front and rear sections of the lead screw 302 rotate in opposite directions, and the front and rear cable holders 307 and 306 are respectively connected to the opposite-rotating threaded sections, when the lead screw 302 rotates, the front and rear cable holders 307 and 306 will make synchronous and opposite linear movements along the lead screw 302. This linkage method using double bidirectional lead screws 302 and synchronous belts 304 is structurally stable and reliable, with precise transmission, ensuring that the front and rear winding columns 305 can move in opposite directions synchronously and at equal intervals, thereby applying completely uniform tension to multiple wire bundles, fundamentally avoiding differences in cutting length caused by uneven tension, and improving product quality.

[0027] Example 3: The difference from Embodiment 1 is that, as Figure 4 and Figure 5 As shown, the spacing of the wire cutting mechanism is adjustable to accommodate wire harnesses of different lengths. Specifically, each blade holder 201 has a seat edge 203 extending downwards from both its left and right ends. A side plate edge 103 extends downwards from both the left and right sides of the panel 101. On each side plate edge 103, a bidirectional screw 204 is rotatably mounted, with the front and rear sections of the screw rotating in opposite directions. The front thread of the bidirectional screw 204 connects to the seat edge 203 on the front blade holder 201, and the rear thread connects to the seat edge 203 on the rear blade holder 201. The bidirectional screws 204 on both sides rotate synchronously via a second synchronous pulley 205 and a second synchronous belt 206. At the outer end of one of the bidirectional screws 204, a handle 207 is fixedly installed. The handle 207 is also equipped with a locking screw 208. When adjusted to the correct position, the locking screw 208 can be tightened to abut against the side plate edge 103 to prevent the screw from rotating accidentally.

[0028] Working principle: When adjusting the cutting length, loosen the locking screw 208 and manually turn the handle 207. Due to the transmission of the second synchronous belt 206 and the synchronous pulley 205, the two bidirectional screws 204 rotate synchronously. Since the front and rear sections of the screw 204 rotate in opposite directions, and the front and rear cutter holders 201 are connected to the opposite-rotating thread sections, rotating the screw 204 causes the front and rear rows of cutter holders 201 to move closer or further away from each other at the same speed, thereby changing the relative distance between the front and rear rows of cutters 202 and the preset termination position of the corresponding winding post 305. After adjusting to the required spacing, tighten the locking screw 208. This design allows the device to flexibly adapt to cutting wire harnesses of different lengths without replacing hardware, offering strong versatility. The adjustment process is simple and intuitive, and the symmetry of the front and rear cutting points is ensured by the synchronization mechanism, guaranteeing that the cut wire segments are of equal length.

Claims

1. A cutting device for automotive wiring harness processing, characterized in that, Includes a base, a tensioning mechanism, a cutting mechanism, and a threading mechanism: The base includes a rectangular panel (101) and a pair of support plates (102) disposed on the front and rear sides of the panel (101); the front and rear sides of the panel (101) are respectively provided with a front groove (104) and a rear groove (105) of the same size and shape, the front groove (104) and the rear groove (105) are arranged alternately in the left and right directions, and the rear end of the front groove (104) and the front end of the rear groove (105) are staggered in the front and rear directions; The wire tensioning mechanism includes a front strip seat (307) and a rear strip seat (306) positioned front and rear respectively. The front strip seat (307) is provided with a row of rearwardly extending extension strips (308), and the rear strip seat (306) is provided with a row of forwardly extending extension strips (308). The ends of the extension strips (308) on the front strip seat (307) and the rear strip seat (306) are provided with vertically upward extending winding posts (305). The winding posts (305) on the front strip seat (307) extend from the front row groove (104), and the winding posts (305) on the rear strip seat (306) extend from the rear row groove (105). The front strip seat (307) and the rear strip seat (306) are driven by a wire tensioning motor (301) fixedly mounted on the panel (101) to move synchronously in opposite directions in the front and rear directions through a linkage mechanism. The cutting mechanism includes two rows of front and rear knife holders (201). A cutter (202) is fixedly installed on the knife holder (201). The cutter (202) on the front knife holder (201) is located directly above the front row groove (104) and the cutting edge is directly facing the winding post (305) on the front strip seat (307). The cutter (202) on the rear knife holder (201) is located directly above the rear row groove (105) and the cutting edge is directly facing the winding post (305) on the rear strip seat (306). The threading mechanism includes horizontally arranged slide rails (401) on the left and right sides. The slide rails (401) are located above the panel (101). The left and right ends of the slide rails (401) are fixedly installed at the center of the left and right sides of the panel (101) respectively. The sliders (404) slidably installed on the slide rails (401) are driven to move left and right by the threading motor (402).

2. The cutting device for automotive wiring harness processing according to claim 1, characterized in that: The linkage mechanism includes a pair of forward and reverse bidirectional lead screws (302) respectively rotatably mounted on the left and right ends of the lower surface of the panel (101). The front and rear sections of the forward and reverse bidirectional lead screws (302) rotate in opposite directions. The front section of the forward and reverse bidirectional lead screws (302) is screw-driven to the front bar seat (307), and the rear section of the forward and reverse bidirectional lead screws (302) is screw-driven to the rear bar seat (306). One of the forward and reverse bidirectional lead screws (302) is driven to the output shaft of the tensioning motor (301). The forward and reverse bidirectional lead screws (302) on the left and right sides are driven to rotate synchronously through the first synchronous pulley (303) and the first synchronous belt (304).

3. The cutting device and method for automotive wiring harness processing according to claim 1, characterized in that: The tool holder (201) has a downwardly extending seat edge (203) at each of its left and right ends. The panel (101) has a downwardly extending side plate edge (103) on each of its left and right sides. A forward and reverse threaded bidirectional screw (204) is rotatably installed on each of the side plate edges (103). The front end of the forward and reverse threaded bidirectional screw (204) rotates in opposite directions to the rear end. The front end of the forward and reverse threaded bidirectional screw (204) is threadedly connected to the seat edge (203) on the front tool holder (201). The rear end of the forward and reverse threaded bidirectional screw (204) is threadedly connected to the seat edge (203) on the rear tool holder (201). The forward and reverse threaded bidirectional screws (204) on the left and right sides are driven synchronously by the second synchronous pulley (205) and the second synchronous belt (206).

4. The cutting device for automotive wiring harness processing according to claim 3, characterized in that: One of the two-way screws (204) has a handle (207) fixedly installed at one end, and a locking screw (208) is installed on the handle (207).

5. The cutting device for automotive wiring harness processing according to claim 1, characterized in that: The threading motor (402) drives the slider (404) to move left and right through the horizontal lead screw (403). The slider (404) is provided with a wire clamping seat (405), and an electric telescopic cylinder (406) is fixedly installed on the wire clamping seat (405). A wire clamping head (407) is fixedly installed at the end of the electric telescopic cylinder (406).

6. A cutting method for automotive wire harness processing, applicable to the cutting device for automotive wire harness processing as described in any one of claims 1-5, characterized in that, Includes the following steps: Step 1, threading: The slider (404) is in the initial position. The slider (404) clamps one or more wire bundles to be cut at one end. Driven by the threading motor (402), the slider (404) guides one or more wire bundles to be cut along the upper surface of the panel (101) from the center position of one end of the panel (101) to the center position of the other end. Step 2, Wire tensioning and cutting: Start the wire tensioning motor (301), and drive the front strip holder (307) and the rear strip holder (306) to move synchronously in opposite directions to the end position through the linkage mechanism, so that the winding post (305) drives the wire harness to stretch back and forth until the wire harness reaches the set tension state; when the winding post (305) reaches the set maximum stroke of the front or rear end, it just touches the cutting edge of the cutter (202), and the front and rear rows of cutters (202) cut the wire harness at the winding post (305) at the same time, to obtain multiple wire harness segments of equal length; Step 3, Material Sorting and Collection: After cutting, the wire harness segments are sorted and collected in order by manual labor or auxiliary tools; Step 4, Reset: Start the tensioning motor (301), and drive the front strip holder (307) and the rear strip holder (306) to move synchronously in opposite directions to the initial position through the linkage mechanism. Start the threading motor (402) to drive the slider (404) to move along the slide rail (401) to the initial position, and prepare for the next cutting operation.

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