A fixture for laser cutting of wire harness sleeves

Abstract

This invention discloses a laser cutting fixture for wire harness sleeves, relating to the field of cutting fixture technology. It includes a fixed base plate, which is fixedly connected to a laser cutting machine. Fixed seats are fixedly connected at equal intervals on the upper surface of the fixed base plate, and a connecting plate is fixedly connected to the upper surface of the fixed seats. A cutting sleeve and an auxiliary sleeve are fixedly connected to the upper surface of the connecting plate. This laser cutting fixture for wire harness sleeves allows operators to perform flexible and precise selective assembly operations on the cutting sleeves using the fixed seats, based on the actual number of wire harness sleeves to be processed and preset spacing parameters. During sleeve cutting, the sleeve is first placed on the outside of the fixed seats, which provide stable and reliable support for the sleeve, effectively preventing deformation of the sleeve due to uneven force during subsequent cutting. This eliminates the possibility of poor cutting results due to deformation, ultimately significantly improving the cutting efficiency and quality of the sleeves.

Description

Technical Field

[0001] This invention relates to the field of laser cutting fixture technology, specifically a fixture for laser cutting of wire harness sleeves. Background Technology

[0002] A wire harness is a whole made up of multiple wires or cables integrated through braiding, binding, and sheathing. It is used to simplify equipment wiring and improve reliability. The sheath is the protective material that wraps the wire harness. It is generally a metal material with a certain degree of elasticity. A small number of sheaths use non-metallic materials or composite materials with some metal to ensure the cable's ductility, providing physical protection and functional expansion. Generally, laser cutting is used to cut the sheath to a length that meets the usage requirements. In order to improve the cutting effect of the sheath, it is necessary to select the appropriate tool according to the characteristics of the sheath material.

[0003] Existing technology 1 (publication number CN207901265U, publication date 2018-09-25 Chinese patent) is a sleeve fixture. The fixture includes a fixture body, a baffle, a fixing groove, a bolt, and a sleeve. The fixing groove is evenly distributed on the fixture body. The sleeve is placed in the fixing groove. The threaded rod of the bolt passes through the sleeve and the fixture body and is threadedly connected to the baffle. The fixture body and the baffle are fixedly connected. The sleeve is fixedly connected to the fixture body by the bolt inside the sleeve. The fixing groove determines the size of the sleeve to be cut, which improves the cutting efficiency and accuracy.

[0004] There is also a prior art (Chinese patent CN116766298B, published on 2025-07-08) which describes a sleeve cutting fixture, belonging to the field of cutting equipment technology. It includes a cutting table with a first and second platform, which form a receiving slot at their junction and are arranged to open and close along a first direction; a rotating component connected at one end to the cutting table and at the other end to a cutting assembly; and a material box located on the side of the cutting table away from the receiving slot. The sleeve cutting fixture can automatically cut the sleeve by driving the cutting assembly through the rotating component. After automatic cutting, the first and second platforms can be separated along the first direction, allowing the sleeve to automatically fall into the material box for automatic collection. The device has a simple overall structure, is easy to operate, and can automate sleeve cutting, improving cutting quality and efficiency.

[0005] While existing technologies can improve the quality and efficiency of casing cutting, the lack of support and restraint on the casing during cutting leads to deformation of the casing due to uneven stress during subsequent cutting, resulting in poor cutting performance.

[0006] Therefore, we propose a fixture for laser cutting of wire harness sleeves to solve the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a fixture for laser cutting of wire harness sleeves, in order to solve the problem mentioned in the background art that in the current market, when cutting sleeves, the sleeves are not supported and limited, and the sleeves deform due to uneven force during the subsequent cutting process, resulting in poor cutting effect.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a fixture for laser cutting of wire harness sleeves, comprising a fixed base plate, the fixed base plate being fixedly connected to a laser cutting machine, and fixed seats being fixedly connected at equal intervals on the upper surface of the fixed base plate, and a connecting plate being fixedly connected to the upper surface of the fixed seats. Simultaneously, a cutting sleeve and an auxiliary sleeve are fixedly connected to the upper surface of the connecting plate. An auxiliary groove is provided on the side of the cutting sleeve. An active rotating shaft is rotatably connected inside the cutting sleeve, and a roller is fixedly connected to the outer side of the active rotating shaft. A linkage rotating shaft is rotatably connected inside the cutting sleeve, and a spreading mechanism is provided between the linkage rotating shaft and the active rotating shaft. The spreading mechanism achieves the spreading operation of the sleeve through the deformation of its included spreading spring plate.

[0009] Preferably, the connecting plate has a cutting groove for reserving space for subsequent cutting operations, and the cutting sleeve and the auxiliary sleeve are located on the left and right sides of the cutting groove, respectively. The side of the cutting sleeve away from the cutting groove is set with an inclined structure, which facilitates the sleeve installation operation.

[0010] Preferably, two sets of auxiliary grooves are symmetrically arranged about the center point of the cutting sleeve, the active rotating shafts are equally spaced on the side close to the auxiliary grooves, and rollers are fixedly connected to the outer side of the active rotating shafts, with the rollers located at the center of the auxiliary grooves.

[0011] Preferably, the outer side of the roller is provided with abutting rubber columns arranged in a ring array, and the outer end of the abutting rubber columns is provided with a spherical structure. The friction between the sleeve and the abutting rubber columns can cause the roller to drive the active rotating shaft to rotate, and the abutting rubber columns can provide auxiliary support for the sleeve to move in and out.

[0012] Preferably, a belt drive structure is provided on the outside of the active rotating shaft on one side of the inclined portion of the cutting sleeve, and the other end of the belt drive structure is sleeved on the outside of the linkage rotating shaft, and two sets of linkage rotating shafts are symmetrically arranged about the center point of the cutting sleeve.

[0013] Preferably, the spreading mechanism includes a cam plate, which is fixedly connected to the linkage shaft, and a connecting column is fixedly connected between the two sets of cam plates, and a movable sleeve plate is rotatably connected to the outside of the connecting column.

[0014] Preferably, the cutting sleeve is fixedly connected to a fixing plate inside, and the fixing plate has sliding grooves on both the left and right sides. The sliding grooves are slidably connected to sliding blocks, and two sets of sliding blocks are symmetrically arranged about the inside of the sliding grooves.

[0015] Preferably, the slide block is hinged with a spring plate, and the spring plate has a zigzag structure when viewed from above. At the same time, the two ends of the spring plate are inclined in opposite directions, and the spring plate is elastic.

[0016] Preferably, an abutment plate is rotatably connected to the outer side of the movable sleeve, a limit rod is fixedly connected to the inside of the cutting sleeve, the abutment plate is slidably connected to the outer side of the limit rod, and the other end of the abutment plate is fixedly connected to the inner side of the vertical part of the spreading spring plate. The spreading spring plate deforms due to the abutment action of the abutment plate. The vertical part of the spreading spring plate moves in the opposite direction in the deformed state, and the spreading spring plate is located on one side of the inclined part of the cutting sleeve.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] Operators can perform flexible and precise selective assembly operations on the cutting sleeve with the help of the fixing seat, based on the actual processing quantity of wire harness sleeves and the preset spacing parameters. When carrying out sleeve cutting operations, the sleeve of metal or partially mixed metal composite material is first placed on the outside of the fixing seat. At this time, the fixing seat can play an auxiliary support role, providing stable and reliable support force for the sleeve, effectively avoiding deformation of the sleeve due to uneven force during subsequent cutting, thereby eliminating the situation of poor cutting effect due to deformation, and ultimately significantly improving the cutting efficiency and quality of the sleeve.

[0019] The connecting plate supports the cutting sleeve and auxiliary sleeve, and a cutting groove is reserved on the connecting plate. The cutting groove provides working space for the cutting operation. The cutting sleeve and auxiliary sleeve are distributed on the left and right sides of the cutting groove, respectively. During the cutting operation, the cutting sleeve and auxiliary sleeve can provide auxiliary support to the sleeve on both sides, strictly limiting the deformation range of the sleeve to a very small range. This ensures that the dimensional accuracy of the cut sleeve meets the design requirements, thereby further improving the cutting effect and product quality, and providing a strong guarantee for the stability and reliability of the entire production process.

[0020] The inner side of the cutting sleeve is equipped with rollers. When the sleeve is being transported and cut, the friction between the sleeve and the rollers will cause the rollers to rotate. The outer side of the rollers is equipped with abutting rubber columns. When the abutting rubber columns come into contact with the sleeve, they will resist the sleeve through their own elasticity, thereby further assisting in pushing the sleeve to move. This allows the sleeve to perform subsequent cutting operations better and avoids jamming during the movement of the sleeve, which would affect the subsequent cutting quality.

[0021] When the roller drives the active shaft to rotate under the action of friction, it can simultaneously drive the linkage shaft to rotate through the belt drive structure. The linkage shaft in the rotating state can drive the cam plate to rotate. The cam plate in the rotating state can drive the movable sleeve plate to change position and deflect synchronously through the connecting column. The movable sleeve plate after deflection can synchronously drive the abutment plate to move. The moving abutment plate moves laterally under the guidance of the limit rod, applying a resisting force to the opening spring plate, thereby causing the opening spring plate to deform outward. By opening the opening spring plate, the sleeve can be opened, so that the sleeve can be better fitted on the outside of the cutting sleeve.

[0022] After deformation, the expansion plate can drive the slide block to slide along the inside of the slide groove at both ends. At this time, the slide groove can limit the slide block, thereby further ensuring the stability of the expansion plate deformation. When the linkage shaft rotates continuously, the deformation of the expansion plate also changes back and forth, further ensuring the stability of the sleeve installation. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the fixed base plate of the present invention;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the cutting sleeve of the present invention;

[0026] Figure 4 This is a three-dimensional cross-sectional view of the cutting sleeve of the present invention;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the roller of the present invention;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the linkage shaft of the present invention;

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of the spring plate of the present invention;

[0030] Figure 8 This is a schematic diagram of the three-dimensional structure of the fixing plate of the present invention;

[0031] Figure 9 This is a schematic diagram of the three-dimensional structure of the contact plate of the present invention;

[0032] Figure 10 For the present invention Figure 8 Enlarged structural diagram at point A in the middle.

[0033] In the diagram: 1. Fixed base plate; 2. Cutting sleeve; 3. Connecting plate; 4. Fixed seat; 5. Auxiliary cylinder; 6. Cutting groove; 7. Roller; 8. Abutting rubber column; 9. Auxiliary groove; 10. Fixed plate; 11. Spreading spring plate; 12. Active rotating shaft; 13. Linkage rotating shaft; 14. Belt drive structure; 15. Limiting rod; 16. Movable sleeve plate; 17. Connecting column; 18. Cam plate; 19. Abutting plate; 20. Slide groove; 21. Slide seat. Detailed Implementation

[0034] 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.

[0035] Example 1: As Figure 1 , Figure 2 and Figure 3 The present invention provides the following technical solution: a fixture for laser cutting of wire harness sleeves, comprising a cutting sleeve 2 and an auxiliary sleeve 5, which can provide auxiliary support for the sleeve to be cut: a fixed base plate 1 is fixedly connected to a laser cutting machine, and a fixed seat 4 is fixedly connected at equal intervals on the upper surface of the fixed base plate 1, and a connecting plate 3 is fixedly connected to the upper surface of the fixed seat 4. At the same time, the cutting sleeve 2 and the auxiliary sleeve 5 are fixedly connected to the upper surface of the connecting plate 3. A cutting groove 6 is provided on the connecting plate 3 to reserve space for subsequent cutting operations, and the cutting sleeve 2 and the auxiliary sleeve 5 are located on the left and right sides of the cutting groove 6, respectively. The side of the cutting sleeve 2 away from the cutting groove 6 is set with an inclined structure. The cutting sleeve 2 with an inclined structure facilitates the sleeve installation operation. Two sets of auxiliary grooves 9 are symmetrically arranged about the center point of the cutting sleeve 2. The active rotating shaft 12 is set at equal intervals on the side close to the auxiliary groove 9.

[0036] Through high-precision positioning and reliable connection, the fixed base plate 1 is securely fixed in the designated working position of the laser welding equipment, ensuring that the fixed base plate 1 will not shift or loosen due to external forces such as vibration and impact during equipment operation. Since the sleeve is not a completely closed tubular structure, but rather a cylindrical structure with closed sides, the sleeve can be fitted onto the outside of the cutting sleeve 2 through pre-reserved gaps on its sides. At this time, the cutting sleeve 2 can be selectively assembled using the fixing seat 4 according to the quantity and spacing of the wire harness sleeves being processed. When the sleeve is in the cutting operation, it can first be fitted onto the outside of the fixing seat 4. During the cutting process, the laser beam cuts the sleeve at high temperature, at which point the sleeve will be subjected to both thermal and mechanical stress, making it prone to deformation. The fixing seat 4 can stably support the sleeve, effectively dispersing these stresses and limiting the deformation range of the sleeve. This prevents deformation such as bending and twisting of the sleeve during subsequent cutting operations, ensuring that the dimensional accuracy and surface quality of the cut sleeve meet design requirements. The connecting plate 3 provides stable and reliable support for the cutting sleeve 2 and the auxiliary cylinder 5 in the entire cutting device. The design of the connecting plate 3 includes a specially reserved cutting groove 6, which provides sufficient and reasonable working space for the cutting operation. The cutting sleeve 2 and the auxiliary cylinder 5 are symmetrically distributed on the left and right sides of the cutting groove 6, respectively. During the cutting operation, the cutting sleeve 2 and the auxiliary cylinder 5 can provide precise and stable auxiliary support for the sleeve located on their outer sides. This support method can effectively disperse the thermal and mechanical stresses on the sleeve during the cutting process, limit the deformation range of the sleeve, and ensure that the dimensional accuracy and surface quality of the cut sleeve meet design requirements, thereby further improving the cutting effect and product quality.

[0037] Example 2: Figure 3 , Figure 4 and Figure 5 The present invention provides the following technical solution: a fixture for laser cutting of wire harness sleeves, comprising a roller 7, which assists in the conveying of the sleeve under the action of friction. An auxiliary groove 9 is provided on the side of the cutting sleeve 2. An active rotating shaft 12 is rotatably connected inside the cutting sleeve 2, and a roller 7 is fixedly connected to the outside of the active rotating shaft 12. The roller 7 is located at the center of the auxiliary groove 9. Abutment rubber columns 8 are arranged in a ring array on the outside of the roller 7, and the outer end of the abutment rubber columns 8 is spherical. Through the friction between the sleeve and the abutment rubber columns 8, the roller 7 can drive the active rotating shaft 12 to rotate. At the same time, the abutment rubber columns 8 can provide auxiliary support for the sleeve to enter and exit. A belt drive structure 14 is provided on the outside of the active rotating shaft 12 on one side of the inclined part of the cutting sleeve 2, and the other end of the belt drive structure 14 is sleeved on the outside of the linkage rotating shaft 13. Two sets of linkage rotating shafts 13 are symmetrically arranged about the center point of the cutting sleeve 2.

[0038] Rollers 7 are carefully installed on the inner side of the cutting sleeve 2. When the sleeve is in the dynamic process of conveying and cutting, the friction between the sleeve and the rollers 7 will naturally drive the rollers 7 to rotate. The outer side of the rollers 7 is equipped with abutting rubber columns 8. When the abutting rubber columns 8 come into contact with the sleeve, they can apply a stable and appropriate abutting force to the sleeve with their good elasticity, which further forms an auxiliary pushing effect on the movement of the sleeve. This allows the sleeve to move more smoothly and stably during the conveying process, thereby creating favorable conditions for subsequent cutting operations. In this way, the jamming of the sleeve due to various factors during the movement is effectively avoided, ensuring the continuity and efficiency of the cutting operation, and thus ensuring the stable operation of the entire production process and the reliability of the cutting quality.

[0039] Example 3: Figures 6-10 The present invention provides the following technical solution: a fixture for laser cutting of wire harness sleeves, which discloses a spreading mechanism. This spreading mechanism can assist in spreading the sleeve, allowing it to be better fitted onto the outside of the cutting sleeve 2. A linkage shaft 13 is rotatably connected inside the cutting sleeve 2, and a spreading mechanism is provided between the linkage shaft 13 and the active shaft 12. The spreading mechanism achieves the spreading operation of the sleeve through the deformation of its included spreading spring plate 11. The spreading mechanism includes a cam plate 18, which is fixedly connected to the linkage shaft 13. A connecting column 17 is fixedly connected between two sets of cam plates 18, and a movable sleeve plate 16 is rotatably connected to the outside of the connecting column 17. A fixed plate 10 is fixedly connected inside the cutting sleeve 2, and grooves are provided on both the left and right sides of the fixed plate 10. 20, and the slide 20 is slidably connected to the inside of the slide 20. At the same time, two sets of slide seats 21 are symmetrically arranged about the inside of the slide 20. A spreading spring plate 11 is hinged on the slide seat 21. The spreading spring plate 11 is arranged in a curved structure when viewed from above. The two ends of the spreading spring plate 11 are inclined in opposite directions. The spreading spring plate 11 is elastic. A contact plate 19 is rotatably connected to the outside of the movable sleeve 16. A limit rod 15 is fixedly connected inside the cutting sleeve 2. The contact plate 19 is slidably connected to the outside of the limit rod 15. The other end of the contact plate 19 is fixedly connected to the inside of the vertical part of the spreading spring plate 11. The spreading spring plate 11 is deformed by the contact action of the contact plate 19. The vertical part of the spreading spring plate 11 moves in the opposite direction when deformed. The spreading spring plate 11 is located on one side of the inclined part of the cutting sleeve 2.

[0040] When roller 7 starts to rotate under the frictional force generated by the contact between the sleeve and itself, it drives the connected drive shaft 12 to rotate synchronously. The drive shaft 12, as a power transmission node, transmits the rotational power to the linkage shaft 13 precisely and stably through the belt drive structure 14. After receiving power, the linkage shaft 13 starts to rotate, thereby driving the cam plate 18 fixed on it to perform circumferential motion. During the rotation of the cam plate 18, it synchronously drives the connecting column 17 to change position, thereby pulling the movable sleeve 16 to change position through the connecting column 17. While the movable sleeve 16 is moving, it will also deflect synchronously. Since the movable sleeve 16 is rotatably connected to the abutment plate 19, the movable sleeve 16 will deflect synchronously. Under the push of the connecting column 17, plate 16 simultaneously pulls the abutment plate 19, causing the abutment plate 19 to move. The abutment plate 19 is sleeved on the limiting rod 15. When the movable sleeve 16 moves, it drives the abutment plate 19 to move along the limiting rod 15. The limiting rod 15 plays a role in precisely guiding and limiting the movement trajectory, ensuring that the abutment plate 19 can only move in a predetermined direction. As the abutment plate 19 moves, it applies a resisting force to the expanding spring plate 11. Under the action of the force, the expanding spring plate 11 deforms outward, increasing its outer diameter. When a sleeve is inserted, the outwardly expanding spring plate 11 can apply a uniform and stable expanding force to the inner wall of the sleeve, thus opening the sleeve. The sleeve is expanded to a suitable size, allowing it to fit more tightly and accurately onto the outside of the cutting sleeve 2. This provides good assembly conditions for subsequent cutting operations, ensuring smooth cutting and stable cutting quality. When the expansion spring plate 11 deforms under the resistance of the contact plate 19, the two ends of the deformed expansion spring plate 11 will generate corresponding displacements, thereby driving the slide block 21 to slide orderly along the carefully designed slide groove 20. The slide groove 20 provides a precise movement track and limit for the slide block 21. During the sliding process of the slide block 21, the side wall of the slide groove 20 can effectively constrain the movement direction of the slide block 21, preventing it from deviating or shaking, further ensuring the stability of the deformation of the expansion spring plate 11. Qualitative design ensures that the expansion plate 11 maintains a uniform and regular shape change during deformation, avoiding problems such as local stress concentration or deformation loss of control caused by uneven deformation. The linkage shaft 13 continues to rotate under the continuous drive of the power source. Since the linkage shaft 13 is closely connected to the entire transmission system, its rotation will drive the cam plate 18 and other components to move continuously, thereby causing the force and motion state of the contact plate 19 to change continuously. Under these circumstances, the deformation of the contact plate 19 is not completed at once, but reciprocates during the continuous rotation of the linkage shaft 13, ensuring that the sleeve is always subjected to a uniform and stable support force during the sleeve installation process, thereby further improving the stability of the sleeve installation.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fixture for laser cutting of wire harness sleeves, comprising a fixed base plate (1), the fixed base plate (1) being fixedly connected to a laser cutting machine, and fixed seats (4) being fixedly connected at equal intervals on the upper surface of the fixed base plate (1), and a connecting plate (3) being fixedly connected to the upper surface of the fixed seats (4), while a cutting sleeve (2) and an auxiliary sleeve (5) are fixedly connected to the upper surface of the connecting plate (3), characterized in that: The cutting sleeve (2) has an auxiliary groove (9) on its side. The cutting sleeve (2) is rotatably connected to an active rotating shaft (12), and a roller (7) is fixedly connected to the outside of the active rotating shaft (12). The cutting sleeve (2) is rotatably connected to a linkage rotating shaft (13), and a spreading mechanism is provided between the linkage rotating shaft (13) and the active rotating shaft (12). The spreading mechanism achieves the spreading operation of the sleeve through the deformation of the spreading spring plate (11) it contains. The connecting plate (3) is provided with a cutting groove (6) to reserve space for subsequent cutting operations. The cutting sleeve (2) and the auxiliary sleeve (5) are located on the left and right sides of the cutting groove (6), respectively. The side of the cutting sleeve (2) away from the cutting groove (6) is set with an inclined structure. The cutting sleeve (2) with an inclined structure facilitates the sleeve installation operation. The auxiliary groove (9) is symmetrically arranged with two sets about the center point of the cutting sleeve (2). The active rotating shaft (12) is set at equal intervals on the side close to the auxiliary groove (9). The outer side of the active rotating shaft (12) is fixedly connected with a roller (7). At the same time, the roller (7) is located at the center of the auxiliary groove (9). The outer side of the roller (7) is arranged with a ring array of abutment rubber columns (8). The outer end of the abutment rubber column (8) is set with a spherical structure. Through the friction between the sleeve and the abutment rubber column (8), the roller (7) can drive the active rotating shaft (12) to rotate. At the same time, the abutment rubber column (8) can provide auxiliary support for the sleeve.

2. The fixture for laser cutting of wire harness sleeves according to claim 1, characterized in that: A belt drive structure (14) is provided on the outside of the active rotating shaft (12) near the inclined part of the cutting sleeve (2), and the other end of the belt drive structure (14) is sleeved on the outside of the linkage rotating shaft (13). The linkage rotating shaft (13) is symmetrically arranged with two sets about the center point of the cutting sleeve (2).

3. The fixture for laser cutting of wire harness sleeves according to claim 1, characterized in that: The opening mechanism includes a cam plate (18), which is fixedly connected to the linkage shaft (13), and a connecting column (17) is fixedly connected between the two sets of cam plates (18), and a movable sleeve plate (16) is rotatably connected to the outside of the connecting column (17).

4. The fixture for laser cutting of wire harness sleeves according to claim 3, characterized in that: The cutting sleeve (2) is fixedly connected to a fixing plate (10), and the fixing plate (10) has a sliding groove (20) on both the left and right sides. The sliding groove (20) is slidably connected to a sliding seat (21), and the sliding seat (21) is symmetrically arranged with two sets of sliding seats (21) about the inside of the sliding groove (20).

5. The fixture for laser cutting of wire harness sleeves according to claim 4, characterized in that: The slide (21) is hinged with a support plate (11), and the support plate (11) is arranged in a zigzag structure when viewed from above. At the same time, the two ends of the support plate (11) are tilted in opposite directions, and the support plate (11) is elastic.

6. The fixture for laser cutting of wire harness sleeves according to claim 5, characterized in that: The outer side of the movable sleeve (16) is rotatably connected to an abutment plate (19), and the inside of the cutting sleeve (2) is fixedly connected to a limit rod (15). The abutment plate (19) is slidably connected to the outside of the limit rod (15), and the other end of the abutment plate (19) is fixedly connected to the inner side of the vertical part of the spreading spring plate (11). The spreading spring plate (11) deforms due to the abutment action of the abutment plate (19). The non-tilted side of the spreading spring plate (11) in the deformed state moves away from the fixed plate (10). The spreading spring plate (11) is located on the inclined side of the cutting sleeve (2).

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