Marking mechanism for automobile fuse box wire harness

Abstract

The invention relates to the technical field of mark printing mechanisms, and discloses a marking mechanism for automobile fuse box wire harnesses, the marking mechanism comprises a bottom plate, first supports are fixedly installed at the two ends of the upper surface of the bottom plate respectively, and a second support is fixedly installed at one end of the upper surface of the bottom plate. Through the arrangement of the supporting assembly, centering clamping of the wire harness can be achieved through the design of a gear ring and an adjusting structure, meanwhile, the telescopic length of the adjusting structure can be adjusted through rotation of a bottom transmission gear, and then centering supporting of the wire harnesses of different diameters is achieved; in this way, the stability of the wire harness can be guaranteed in the printing process of the marking printing mechanism, meanwhile, the action that the clamping and stretching structure centrally gathers and clamps the outer portion of the wire harness to stretch towards the two sides under the action of the shrinkage assembly is combined, it can be guaranteed that the wire harness can be stretched in time in the heat shrinkage process during marking printing, and it is guaranteed that the shrinkage state is stable.

Description

Technical Field

[0001] This invention relates to the field of printing marking mechanism technology, specifically a printing marking mechanism for automotive fuse box wiring harnesses. Background Technology

[0002] In the production of automotive fuse box wiring harnesses, marking and printing on the surface of the harness is required. This is typically done using thermal processing technologies such as laser marking and thermoforming. Existing marking and printing devices for this type of wiring harness use a clamping mechanism to hold the harness in place before using a printing tip to apply the markings. However, existing marking and printing devices have some problems during use, as follows:

[0003] Existing marking devices for wire harnesses typically place the wire harness in one half of a slot and then press it down from above with the other half. However, this method only secures the wire harness. The marking process involves heating and melting the insulation layer surrounding the wire harness to print the mark. This process causes the insulation layer to shrink when heated, which in turn causes the wire harness to bend. Consequently, the wire harness cannot straighten naturally after printing and requires subsequent stretching. This stretching process can damage the markings at the printed locations. Furthermore, if the wire harness is not fully straightened before being fed into the marking device, the printing tip may heat the insulation layer too close to the wire harness insulation, leading to overheating and damage. Therefore, we propose a marking mechanism for automotive fuse box wire harnesses. Summary of the Invention

[0004] This invention provides a printing mechanism for automotive fuse box wiring harnesses, which has the advantages of good printing effect and stable printing quality, and solves the problems mentioned in the background art.

[0005] This invention provides the following technical solution: a marking mechanism for automotive fuse box wiring harnesses, comprising a base plate, a first support fixedly mounted at both ends of the upper surface of the base plate, a second support fixedly mounted at one end of the upper surface of the base plate, a drive motor fixedly mounted inside the second support, a central rod movably mounted on the first support, transmission gears fixedly mounted at both ends of the central rod, support components fixedly mounted at both ends of the upper surface of the base plate, a retraction component movably mounted on the support components, a vertical rod fixedly mounted on the upper surface of the base plate, a top plate fixedly mounted at the top of the vertical rod, an electric push rod fixedly mounted on the lower surface of the top plate, a suspension base fixedly mounted at the bottom end of the electric push rod, and a laser welding head movably mounted at the bottom end of the suspension base.

[0006] In a preferred embodiment, the support assembly includes a base frame, a side plate fixedly mounted on one side of the top of the base frame, a side rod fixedly mounted on one side of the side plate, a base ring fixedly mounted on one end of the side plate, a toothed ring movably mounted on one side of the base ring, a plurality of adjustment structures uniformly fixedly mounted on the base ring, a plurality of clamping and stretching structures uniformly movably mounted on the base ring, and a limit end block fixedly mounted on one end of the base ring.

[0007] In a preferred embodiment, the shrinking component is movably sleeved on the side rod and slidably disposed, the toothed ring is meshed with the transmission gear and is rotatably disposed on the base ring, the adjusting structure is disposed through the base ring, the clamping and stretching structure is provided with reset coil springs on both sides of the end connected to the base ring, and the limiting end block is fixedly disposed on both sides of the end connected to the base ring of the clamping and stretching structure.

[0008] In a preferred embodiment, the adjusting structure includes a top frame, a pinion gear is movably mounted on the top of the top frame, an inner screw is fixedly mounted on the bottom of the pinion gear, an outer cylinder is movably connected to the outside of the inner screw, a support head is fixedly mounted on the bottom of the outer cylinder, and limit rods are fixedly mounted on both ends of the upper surface of the support head.

[0009] In a preferred embodiment, the top frame is U-shaped, a small gear is rotatably connected to the lower surface of the top of the top frame, the inner screw and the outer cylinder are threadedly connected, a guide wheel is embedded at the bottom of the support head, the surface of the guide wheel can be fitted to the outer surface of the wire harness, and the limiting straight rod is movably set through the base ring.

[0010] In a preferred embodiment, the clamping and stretching structure includes a clamping rod, with pins fixedly installed on both sides of one end of the clamping rod, limit blocks fixedly installed on both sides of one end of the clamping rod, and a clamping head movably installed on the other end of the clamping rod, with a roller movably installed embedded in the clamping head.

[0011] In a preferred embodiment, a coil spring is sleeved on the pin, the limiting block is located below the limiting end block, the bottom end of the clamping head is an arc groove structure, and the arc groove can fit the surface of the wire harness. The lower surface of the clamping head is provided with an anti-slip rubber pad, the roller is located on the clamping head and protrudes, and the roller is movable in contact with the shrinking assembly.

[0012] In a preferred embodiment, the shrinking assembly includes a support ring and a shrinking drive rod, which are fixedly and alternately arranged. Sliding end blocks are fixedly installed at both ends of the support ring and the shrinking drive rod. A connecting ring is fixedly installed on the outside of the support ring and the shrinking drive rod. A top block is fixedly installed at the top of the connecting ring. A round rod is movably installed on the top block. A spring is movably sleeved on the round rod. A connector is fixedly installed at one end of the round rod. A connecting rod is movably installed on the connector.

[0013] In a preferred embodiment, one end of the retraction drive rod is bent, and the bent end is movably disposed to fit against one end of the clamping and stretching structure. The sliding end block is movably sleeved on the side rod. The connecting ring is configured as a semi-circular structure. The top block is fixedly disposed at the top center of the connecting ring. The spring is disposed between the top block and the connecting head. The spring force coefficient of the spring is greater than the sum of the spring force coefficients of all the coil springs connected to the ends of the clamping and stretching structure. The top end of the connecting rod is fixedly installed to the bottom end of the suspension base block.

[0014] The present invention has the following beneficial effects:

[0015] 1. This marking mechanism for automotive fuse box wiring harnesses, through the design of a support component, toothed ring, and adjustment structure, can achieve centered clamping of the wiring harness. Simultaneously, the rotation of the bottom transmission gear can adjust the extension length of the adjustment structure, thus achieving centered support for wiring harnesses of different diameters. This ensures the stability of the wiring harness during the marking process. Furthermore, combined with the clamping and stretching structure, under the action of the shrinking component, the mechanism centrally gathers and pulls the wiring harness to both sides, ensuring that the wire harness is stretched in time during the heat shrinkage process of marking, maintaining a stable shrinkage state. This ensures that the wiring harness remains straight after marking, guaranteeing the integrity of the printed marks and the stability of the wiring harness during the marking process, preventing bending that could lead to damage to the wiring harness due to excessive proximity to the laser welding head.

[0016] 2. This printing mechanism for automotive fuse box wiring harnesses features shrinkage components on both sides of the bottom of the suspension base. These shrinkage components are connected by a linkage to drive a round rod. As the suspension base moves downward, the round rod, through a spring, synchronously moves the connecting ring, which in turn pulls the support ring and the shrinkage drive rod together. This allows for centered compression and convergence of the clamping and stretching structure. Furthermore, as the suspension base continues to move downward, after the clamping and stretching structure is fully pressed against the wiring harness surface, the continuous movement compresses the spring, thus stretching the wiring harness. This ensures the stability of thermal shrinkage during the wiring harness printing process, thereby guaranteeing the printing effect. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the first connection structure between the support component and the contraction component of the present invention;

[0019] Figure 3 This is a schematic diagram of the second connection structure between the support component and the contraction component of the present invention;

[0020] Figure 4 This is a three-dimensional structural diagram of the shrinkage component of the present invention;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the support component of the present invention;

[0022] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle;

[0023] Figure 7 This is a three-dimensional schematic diagram of the clamping and stretching structure of the present invention;

[0024] Figure 8 This is a three-dimensional schematic diagram of the adjustment structure of the present invention;

[0025] Figure 9 This is a partial three-dimensional schematic diagram of the adjustment structure of the present invention.

[0026] In the diagram: 1. Base plate; 2. First support; 3. Second support; 4. Intermediate rod; 5. Transmission gear; 6. Support assembly; 61. Base frame; 62. Side plate; 63. Side rod; 64. Base ring; 65. Gear ring; 66. Adjustment structure; 661. Top frame; 662. Pinion; 663. Internal screw; 664. Outer cylinder; 665. Support head; 666. Limiting rod; 67. Clamping and tensioning structure; 671. Clamping 672. Rod; 673. Pin; 674. Limiting block; 675. Clamping head; 676. Roller; 68. Limiting end block; 7. Retraction assembly; 71. Support ring; 72. Retraction drive rod; 73. Sliding end block; 74. Connecting ring; 75. Top block; 76. Round rod; 77. Spring; 78. Connecting head; 79. Connecting rod; 8. Upright pole; 9. Top plate; 10. Electric push rod; 11. Suspension base block; 12. Laser welding head. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The marking mechanism for automotive fuse box wiring harnesses involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1 A marking mechanism for automotive fuse box wiring harnesses includes a base plate 1, with first supports 2 fixedly mounted at both ends of the upper surface of the base plate 1, and a second support 3 fixedly mounted at one end of the upper surface of the base plate 1. A drive motor is fixedly mounted inside the second support 3. A middle rod 4 is movably mounted on the first support 2, and transmission gears 5 are fixedly mounted at both ends of the middle rod 4. Support components 6 are fixedly mounted at both ends of the upper surface of the base plate 1, and a retraction component 7 is movably mounted on the support components 6. A vertical rod 8 is fixedly mounted on the upper surface of the base plate 1, and a top plate 9 is fixedly mounted at the top of the vertical rod 8. An electric push rod 10 is fixedly mounted on the lower surface of the top plate 9, and a suspension base block 11 is fixedly mounted at the bottom end of the electric push rod 10. A laser welding head 12 is movably mounted at the bottom end of the suspension base block 11.

[0029] In this embodiment, it should be noted that by providing the support component 6, the design of the toothed ring 65 and the adjustment structure 66 can achieve centered clamping of the wire harness. Simultaneously, the rotation of the bottom transmission gear 5 can adjust the extension and retraction length of the adjustment structure 66, thereby achieving centered support for wire harnesses of different diameters. This ensures the stability of the wire harness during the printing process. Furthermore, combined with the clamping and stretching structure 67, under the action of the shrinking component 7, the wire harness is centrally gathered and stretched to both sides. This ensures that the wire harness is stretched in time during the heat shrinkage process when printing marks, maintaining a stable shrinkage state. This ensures that the wire harness remains straight after printing, thus guaranteeing the integrity of the printed marks and the stability of the wire harness during the printing process, avoiding... To prevent wire harness damage caused by bending and getting too close to the laser welding head 12, shrinkage components 7 are provided on both sides of the bottom of the suspension base block 11. The shrinkage components 7 are connected by a connecting rod 79 to drive the round rod 76 to move. As the suspension base block 11 moves downward, the round rod 76, through the setting of spring 77, synchronously drives the connecting ring 74 to move, thereby pulling the support ring 71 and the shrinkage drive rod 72 to move as a whole. This can achieve centered compression and gathering of the clamping and stretching structure 67. As the suspension base block 11 continues to move downward, after the clamping and stretching structure 67 is fully pressed against the wire harness surface and clamped, the continuous movement will compress the spring 77, thereby stretching the wire harness and ensuring the stability of thermal shrinkage during the wire harness printing process, thus ensuring the printing effect.

[0030] Please see Figure 1-6A marking mechanism for automotive fuse box wiring harnesses includes two support assemblies 6. Each support assembly 6 includes a base frame 61. A side plate 62 is fixedly mounted on one side of the top of the base frame 61. A side rod 63 is fixedly mounted on one side of the side plate 62. A base ring 64 is fixedly mounted on one end of the side plate 62. A toothed ring 65 is movably mounted on one side of the base ring 64. A plurality of adjusting structures 66 are evenly fixedly mounted on the base ring 64. A plurality of clamping and stretching structures 67 are evenly movably mounted on the base ring 64. A limit end block 68 is fixedly mounted on one end of the base ring 64.

[0031] In this embodiment, it should be noted that the shrinking component 7 is movably sleeved on the side rod 63 and slidably disposed. The toothed ring 65 is meshed with the transmission gear 5 and is rotatably disposed on the base ring 64. The adjusting structure 66 is disposed through the base ring 64. The clamping and stretching structure 67 is provided with reset coil springs on both sides of the end connected to the base ring 64. The limiting end block 68 is fixedly disposed on both sides of the end connected to the clamping and stretching structure 67 and the base ring 64. In this way, when it is necessary to adjust according to the thickness of the wire harness, the transmission gear 5 can be used to drive the toothed ring 65 to rotate, and then the toothed ring 65 can drive the adjusting structure 66 to rotate. The rotation of the structure on the adjusting structure 66 will cause it to extend and retract. Multiple adjusting structures 66 are evenly arranged in a ring on the base ring 64, so as to realize the rapid adjustment of the entire support component 6, thereby enabling it to conveniently clamp and support wire harnesses of various specifications.

[0032] Please see Figure 2-9 A marking mechanism for automotive fuse box wiring harnesses includes an adjustment structure 66, which includes a top frame 661. A pinion 662 is movably mounted on the top of the top frame 661, and an inner screw 663 is fixedly mounted on the bottom of the pinion 662. An outer cylinder 664 is movably connected to the outside of the inner screw 663, and a support head 665 is fixedly mounted on the bottom of the outer cylinder 664. Limiting straight rods 666 are fixedly mounted on both ends of the upper surface of the support head 665.

[0033] In this embodiment, it should be noted that the top frame 661 is U-shaped, and a small gear 662 is rotatably connected to the lower surface of the top of the top of the top frame 661. The inner screw 663 and the outer cylinder 664 are threadedly connected. A guide wheel is embedded in the bottom of the support head 665. The surface of the guide wheel can be fitted to the outer surface of the wire harness. The limiting straight rod 666 is movably set through the base ring 64. In this way, the rotation of the gear ring 65 can drive the small gear 662 to rotate, and the small gear 662 can drive the outer cylinder 664 to move up and down to adjust its extension length. The support head 665 at the bottom can press against the surface of the wire harness. This can ensure the stability of the subsequent movement and transportation of the wire harness, and also ensure the stability of the wire harness stretching process during the printing and marking process, thereby ensuring the quality of the printed marks.

[0034] Please see Figure 6-7A marking mechanism for automotive fuse box wiring harnesses includes a clamping and stretching structure 67, which includes a clamping rod 671. Pins 672 are fixedly installed on both sides of one end of the clamping rod 671, and limit blocks 673 are fixedly installed on both sides of one end of the clamping rod 671. A clamping head 674 is movably installed on the other end of the clamping rod 671, and a roller 675 is movably installed on the clamping head 674.

[0035] In this embodiment, it should be noted that a coil spring is sleeved on the pin 672, the limiting block 673 is located below the limiting end block 68, the bottom end of the clamping head 674 has an arc groove structure, and the arc groove can fit the surface of the wire harness. The lower surface of the clamping head 674 is provided with an anti-slip rubber pad, and the roller 675 is located on the clamping head 674 and protrudes outward. The roller 675 is movable in contact with the shrinking assembly 7. In this way, the shrinking assembly 7 moves to the side under the downward movement of the suspension base block 11 to press... The retracting roller 675 causes one end of the roller 675 to shrink and converge, thereby allowing the clamping head 674 to fit against the surface of the wire harness. Under the continuous downward movement of the suspension base block 11, this fit is stabilized. As a result, when the laser welding head 12 prints marks, the thermal shrinkage effect of the wire harness will ensure that both ends of the wire harness remain taut under the stretching action of the shrinking component 7, thus preventing the wire harness from shrinking and ensuring the printing and marking effect of the wire harness.

[0036] Please see Figure 1-4 A marking mechanism for automotive fuse box wiring harnesses includes a retraction assembly 7. The retraction assembly 7 includes a support ring 71 and a retraction drive rod 72, which are fixedly and alternately arranged. Sliding end blocks 73 are fixedly installed at both ends of the support ring 71 and the retraction drive rod 72. A connecting ring 74 is fixedly installed on the outside of the support ring 71 and the retraction drive rod 72. A top block 75 is fixedly installed at the top of the connecting ring 74. A round rod 76 is movably installed on the top block 75. A spring 77 is movably sleeved on the round rod 76. A connector 78 is fixedly installed at one end of the round rod 76. A connecting rod 79 is movably installed on the connector 78.

[0037] In this embodiment, it should be noted that one end of the retraction drive rod 72 is bent, and this bent end is movably positioned to fit against one end of the clamping and stretching structure 67. The sliding end block 73 is movably sleeved on the side rod 63. The connecting ring 74 is a semi-circular structure, and the top block 75 is fixedly positioned at the middle of the top of the connecting ring 74. The spring 77 is positioned between the top block 75 and the connecting head 78. The elastic coefficient of the spring 77 is greater than the sum of the elastic coefficients of all the coil springs connected to the ends of the clamping and stretching structure 67. The top end of the connecting rod 79 is fixedly installed to the bottom end of the suspension base block 11. Thus, the downward movement of the top suspension base block 11 will drive... The connecting rod 79 rotates around the connector 78, thereby pushing the retraction drive rod 72 to move towards the end of the clamping and stretching structure 67. During the movement, it gradually compresses and retracts the wire harness, thereby causing the clamping and stretching structure 67 to clamp the wire harness. The subsequent continuous movement will also push the round rod 76 to compress the spring 77, thus exerting a stretching force on the wire harness at the end of the clamping and stretching structure 67. In this way, when the laser welding head 12 prints marks on the surface of the wire harness, the resulting thermal shrinkage can prevent the wire harness from bending under the action of the stretching force, thereby ensuring that the printing position does not shift and ensuring the overall marking printing effect of the wire harness.

[0038] Working principle: The wire harness is inserted into the middle of the base rings 64 on both sides. Then, the drive motor is started, which drives the transmission gear 5 to rotate. The transmission gear 5 drives the gear ring 65 to rotate, which in turn drives the pinion 662 to rotate. The pinion 662 drives the inner screw 663 to rotate, which in turn drives the outer cylinder 664 to move. During the movement, the bottom end of the support head 665 abuts against the surface of the wire harness, completing the compression and fixation of the wire harness. Then, the electric push rod 10 at the top is activated to move the suspension base block 11 downward, which in turn moves the laser welding head 12 downward. At the same time, the connecting rods 79 on both sides rotate, which causes the connector 78 to drive the top block 75 to push the support ring 71 and... The retraction drive rod 72 moves, causing its bottom end to press against the roller 675. This causes the clamping head 674 to rotate around one end of the pin 672, and the bottom end of the clamping head 674 to press against and clamp the surface of the wire harness. Then, the continued downward movement of the suspension block 11 compresses the spring 77, and the round rod 76 slides laterally on the top block 75 until the laser welding head 12 moves to the corresponding position. During the marking process, the thermal shrinkage generated on the surface of the wire harness will keep it taut under the tensile force generated by the compression of the top blocks 75 on both sides, thus ensuring the stability of the wire harness during the marking process.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A marking mechanism for automotive fuse box wiring harnesses, comprising a base plate (1), characterized in that: The upper surface of the base plate (1) is fixedly mounted with a first support (2) at both ends, and a second support (3) is fixedly mounted at one end of the upper surface of the base plate (1). A drive motor is fixedly mounted inside the second support (3). A middle rod (4) is movably mounted on the first support (2). A transmission gear (5) is fixedly mounted at both ends of the middle rod (4). A support assembly (6) is fixedly mounted at both ends of the upper surface of the base plate (1). A retraction assembly (7) is movably mounted on the support assembly (6). A vertical rod (8) is fixedly mounted on the upper surface of the base plate (1). A top plate (9) is fixedly mounted at the top of the vertical rod (8). An electric push rod (10) is fixedly mounted on the lower surface of the top plate (9). A suspension base block (11) is fixedly mounted at the bottom end of the electric push rod (10). A laser welding head (12) is movably mounted at the bottom end of the suspension base block (11).

2. The marking mechanism for automotive fuse box wiring harnesses according to claim 1, characterized in that: The support assembly (6) includes a base frame (61), a side plate (62) is fixedly installed on one side of the top of the base frame (61), a side rod (63) is fixedly installed on one side of the side plate (62), a base ring (64) is fixedly installed at one end of the side plate (62), a toothed ring (65) is movably installed on one side of the base ring (64), a plurality of adjustment structures (66) are evenly fixedly installed on the base ring (64), a plurality of clamping and stretching structures (67) are evenly movably installed on the base ring (64), and a limit end block (68) is fixedly installed at one end of the base ring (64).

3. The marking mechanism for automotive fuse box wiring harnesses according to claim 2, characterized in that: The shrinking component (7) is movably sleeved on the side rod (63) and slidably disposed. The toothed ring (65) is meshed with the transmission gear (5). The toothed ring (65) is rotatably disposed on the base ring (64). The adjusting structure (66) is disposed through the base ring (64). The clamping and stretching structure (67) is provided with reset coil springs on both sides of the end connected to the base ring (64). The limiting end block (68) is fixedly disposed on both sides of the end connected to the clamping and stretching structure (67) and the base ring (64).

4. A marking mechanism for automotive fuse box wiring harnesses according to claim 2, characterized in that: The adjustment structure (66) includes a top frame (661), a pinion (662) is movably mounted on the top of the top frame (661), an inner screw (663) is fixedly mounted on the bottom of the pinion (662), an outer cylinder (664) is movably connected to the outside of the inner screw (663), a support head (665) is fixedly mounted on the bottom of the outer cylinder (664), and limit rods (666) are fixedly mounted on both ends of the upper surface of the support head (665).

5. A marking mechanism for automotive fuse box wiring harnesses according to claim 4, characterized in that: The top frame (661) is U-shaped. A small gear (662) is rotatably connected to the lower surface of the top of the top of the top frame (661). The inner screw (663) and the outer cylinder (664) are threadedly connected. A guide wheel is embedded in the bottom of the support head (665). The surface of the guide wheel can be fitted to the outer surface of the wire harness. The limiting straight rod (666) is movably set through the base ring (64).

6. A marking mechanism for automotive fuse box wiring harnesses according to claim 2, characterized in that: The clamping and stretching structure (67) includes a clamping rod (671), with pins (672) fixedly installed on both sides of one end of the clamping rod (671), and limit blocks (673) fixedly installed on both sides of one end of the clamping rod (671). A clamping head (674) is movably installed on the other end of the clamping rod (671), and a roller (675) is movably installed on the clamping head (674).

7. A marking mechanism for automotive fuse box wiring harnesses according to claim 6, characterized in that: A coil spring is sleeved on the pin (672), the limiting block (673) is located below the limiting end block (68), the bottom end of the clamping head (674) is an arc groove structure, and the arc groove can fit the surface of the wire harness. The lower surface of the clamping head (674) is provided with an anti-slip rubber pad, and the roller (675) is located on the clamping head (674) and protrudes outward. The roller (675) is in contact with the shrinking component (7) and is movable.

8. A marking mechanism for automotive fuse box wiring harnesses according to claim 1, characterized in that: The shrinking assembly (7) includes a support ring (71) and a shrinking drive rod (72). The support ring (71) and the shrinking drive rod (72) are fixedly arranged in an alternating manner. Sliding end blocks (73) are fixedly installed at both ends of the support ring (71) and the shrinking drive rod (72). A connecting ring (74) is fixedly installed on the outside of the support ring (71) and the shrinking drive rod (72). A top block (75) is fixedly installed at the top of the connecting ring (74). A round rod (76) is movably installed on the top block (75). A spring (77) is movably sleeved on the round rod (76). A connector (78) is fixedly installed at one end of the round rod (76). A connecting rod (79) is movably installed on the connector (78).

9. A marking mechanism for automotive fuse box wiring harnesses according to claim 8, characterized in that: One end of the retraction drive rod (72) is bent, and the bent end is movably fitted to one end of the clamping tension structure (67). The sliding end block (73) is movably sleeved on the side rod (63). The connecting ring (74) is set in a semi-circular structure. The top block (75) is fixedly set at the top center of the connecting ring (74). The spring (77) is set between the top block (75) and the connector (78). The elastic coefficient of the spring (77) is greater than the sum of the elastic coefficients of all the coil springs connected to the ends of the clamping tension structure (67). The top end of the connecting rod (79) is fixedly installed with the bottom end of the suspension base block (11).

Images