Laser cutting machine for automobile parts

Abstract

The invention relates to the technical field of laser cutting, in particular to a laser cutting machine for automobile parts. The laser cutting machine for the automobile parts comprises a mounting table, an adjustable clamping device is mounted on the mounting table, a pipe is clamped and fixed through the adjustable clamping device, and laser cutting is conducted on the pipe through a laser cutter; the two sides of the mounting table are each provided with a winding assembly, composite cables are wound in the winding assemblies, the end of the left composite cable is detachably connected with a sliding fixing piece, and the end of the right composite cable is detachably connected with the other sliding fixing piece; the two sliding fixing pieces are in spherical connection through the ball socket piece and the ball head piece. A shielding piece for shielding cutting waste and slag is arranged between the two sliding fixing pieces. The laser cutting machine aims at laser cutting pain points of automobile pipes, and full-coverage machining of straight pipes and bent pipes is achieved.

Description

Laser cutting machine for automotive parts Technical Field

[0001] This invention relates to the field of laser cutting technology, and more particularly to a laser cutting machine for automotive parts. Background Technology

[0002] Automotive parts use a large number of pipes (straight and bent pipes), which are laser-drilled and laser-cut as needed. When the pipes are laser-cut (laser drilling, laser cutting), the slag produced will adhere to the inner wall of the pipe, affecting the cleanliness of the inner wall. In the existing technology, such as patent applications with publication numbers CN113084364A (a continuous inner wall protection laser pipe cutting machine) and CN118455782A (pipe laser cutting equipment), although they disclose that the problem of slag adhering to the inner wall of the pipe can be overcome by setting a shielding element inside the pipe, they can only be used for shielding straight pipes and cannot be used for shielding bent pipes, thus limiting the application scenarios. Summary of the Invention

[0003] To overcome the shortcomings of existing laser cutting equipment in preventing slag shielding of bent pipes, this invention provides a laser cutting machine for automotive parts, comprising a mounting platform with an adjustable clamp for clamping and fixing the pipe, and a laser cutter for laser cutting the pipe; a winding assembly is provided on each side of the mounting platform, each winding up a composite cable; a sliding fixing member is detachably connected to the end of the left composite cable, and another sliding fixing member is detachably connected to the end of the right composite cable; the two sliding fixing members are spherically connected by a ball joint and a ball head; a shielding member is provided between the two sliding fixing members to shield cutting waste and slag.

[0004] More preferably, the shielding component includes a spring component on the outer side and a metal mesh on the inner side, with several spring components evenly distributed in a ring shape. The spring components contain the cutting waste, and the metal mesh shields the molten slag.

[0005] More preferably, the composite cable is equipped with a power line, and the ball socket is equipped with a locking electric push rod. The locking electric push rod is powered by the composite cable, and the telescopic part of the locking electric push rod is pushed out and abuts against the ball head to lock the ball socket and the ball head.

[0006] More preferably, the composite cable is provided with a vent pipe, and the sliding fastener includes a connecting block and an inflatable airbag disposed on the outside of the connecting block; the inflatable airbag is vented through the composite cable, causing the inflatable airbag to contract or expand; when the inflatable airbag is fully inflated, the sliding fastener can be fixed in the pipe; when the inflatable airbag is not fully inflated, the sliding fastener can slide in the pipe, and the inflatable airbag is in close contact with the inner wall of the pipe, and a wiping cloth is provided on the outer ring surface of the inflatable airbag.

[0007] More preferably, a venting ring is installed in the connecting block, and the venting ring is vented through the composite cable to allow the venting ring to draw in or blow air.

[0008] More preferably, the winding assembly is provided with a guide ring for guiding the composite cable, and the guide ring is fixed to the left bracket of the mounting platform; at the connection between the composite cable and the sliding fastener, a guide block is provided to guide the sliding fastener to move inside the tube.

[0009] More preferably, it also includes a self-cleaning component, which includes a mounting bracket; the mounting bracket is fixedly attached to the left side support of the mounting platform; a rotation limiting plate is fixedly attached to the left side of the mounting bracket; an annular guide rail assembly is fixedly attached to the right side of the mounting bracket, the annular guide rail assembly including an outer fixed part and an inner rotating part; a rack is fixedly attached to the inner side of the inner rotating part of the annular guide rail assembly; a drive motor is mounted on the mounting bracket; a gear is fixedly attached to the rotating part of the drive motor, and the gear meshes with the rack; a rotating ring is connected to the inner rotating part of the annular guide rail assembly through a connector, and the rotating ring drives one of the sliding fixed parts to move, thereby twisting the blocking part and removing cutting waste and slag from the blocking part.

[0010] More preferably, the connector is an electric actuator.

[0011] More preferably, the rotation limiting plate has a limiting hole for locking the guide block, and a limiting strip for limiting the rotation of the guide block is provided in the limiting hole.

[0012] More preferably, the rotating ring consists of a mounting ring and an airbag gasket installed inside the mounting ring, with several limiting strips provided inside the airbag gasket to restrict the rotation of the sliding fixing parts.

[0013] Compared with existing technologies, the present invention has the following advantages: The laser cutting machine of the present invention addresses the pain points of laser cutting of automotive pipes, achieving full coverage processing of straight and curved pipes. Its spherical connection between the ball socket and the ball head, combined with a deformable spring and a metal mesh shield, can move with the cutting position, accurately intercepting molten slag and accommodating cutting waste, thus avoiding contamination of the inner wall of the pipe. The ventilation ring, together with the expansion airbag, seals both ends of the cutting point, efficiently removing cutting fumes, while the outer ring of the expansion airbag wipes the inner wall simultaneously. During the cutting operation, the locking electric push rod fixes the spherical connection, and the expansion airbag fully expands to support both ends of the pipe, providing support on the inner side of the pipe and preventing deformation and damage at the cutting point.

[0014] After the cutting is completed, the device can automatically reset the sliding fixing part. The drive motor drives the single-sided sliding fixing part to rotate back and forth. The torsion spring and the metal mesh enable the waste slag to fall off automatically. Combined with the eccentric torsion action design and the air blowing function of the ventilation ring, the cleaning is more thorough. The deformation characteristics of the airbag gasket ensure that the eccentric torsion is smooth. There is no need to manually disassemble the shielding parts for cleaning, which greatly reduces the workload and time cost of maintenance. Attached Figure Description

[0015] Figure 1 is a structural schematic diagram of the present invention; Figure 2 is a partial structural schematic diagram of Figure 1; Figure 3 is a structural schematic diagram of the sliding fastener, ball socket, ball head, spring, and metal mesh entering the pipe of the present invention; Figure 4 is a structural schematic diagram of the sliding fastener, ball socket, and ball head of the present invention; Figure 5 is an enlarged view of point A in Figure 4; Figure 6 is a structural schematic diagram of the self-cleaning component of the present invention; Figure 7 is a structural schematic diagram of Figure 6 from another perspective.

[0016] In the diagram: 1-Mounting platform, 2-Adjustable clamp, 3-Laser cutter, 4-Rewinding assembly, 5-Sliding fastener, 6-Ball socket, 7-Ball head, 8-Spring, 9-Metal mesh, 4a-Composite cable, 6a-Locking electric push rod, 51-Connecting block, 52-Inflatable airbag, 53-Ventilation ring, 67-Elastic protective sleeve, 4b-Guide block, 4c-Guide ring, 11-Mounting bracket, 12-Rotation limiting plate, 13-Annular guide rail assembly, 14-Drive motor, 15-Gear, 16-Rack, 17-Connector, 18-Rotating ring, 18a-Mounting ring, 18b-Airbag gasket, 100-Pipe. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] Example 1: As shown in Figures 1-5, a laser cutting machine for automotive parts includes a mounting platform 1, on which an adjustable clamp 2 is mounted. The adjustable clamp 2 clamps and fixes the tube 100. The laser cutter 3 performs laser cutting (laser drilling, laser cutting) on ​​the tube 100. The laser cutter 3 is connected to a multi-axis robotic arm for multi-dimensional movement. Further, a winding assembly 4 is provided on each side of the mounting platform 1. The winding assembly 4 winds up a composite cable 4a. As shown in Figure 4, the end of the left composite cable 4a is detachably connected to a sliding fastener 5, and the end of the right composite cable 4a is detachably connected to another sliding fastener 5. The detachable connection can be a screw connection or a snap-fit ​​connection. The two sliding fasteners 5 are spherically connected by a ball socket 6 and a ball head 7. A shielding component is provided between the two sliding fasteners 5 to shield cutting waste and slag. Among them, the connection between the ball socket 6 and the ball head 7 is protected by an elastic protective sleeve 67. In addition, the protective sleeve is designed to be detachable and can be disassembled and replaced periodically.

[0019] As shown in Figure 3, the shielding component includes a spring component 8 located on the outer side and a metal mesh 9 located on the inner side. Several spring components 8 are evenly distributed in a ring shape. The spring components 8 contain the cutting waste, and the metal mesh 9 shields the molten slag. By setting the shielding component to have deformable spring components 8 and metal mesh 9, it can adapt to the state changes caused by the spherical movement of the two sliding fixing components 5. The spring components 8 are evenly distributed in a ring shape but are smaller than the inner diameter of the pipe 100.

[0020] As shown in Figure 4, a power line is provided in the composite cable 4a, and a locking electric push rod 6a is provided in the ball socket 6. The locking electric push rod 6a is powered through the composite cable 4a. The telescopic part of the locking electric push rod 6a is pushed out and abuts against the ball head 7, thereby locking the ball socket 6 and the ball head 7.

[0021] The composite cable 4a is provided with a vent pipe, and the sliding fastener 5 includes a connecting block 51 and an inflatable airbag 52 disposed on the outside of the connecting block 51. The inflatable airbag 52 is vented through the composite cable 4a, causing the inflatable airbag 52 to contract or expand. When the inflatable airbag 52 is fully inflated, the sliding fastener 5 can be fixed in the pipe 100. When the inflatable airbag 52 is not fully inflated, the sliding fastener 5 can slide in the pipe 100, and the inflatable airbag 52 is in close contact with the inner wall of the pipe 100. A wiping cloth is provided on the outer ring surface of the inflatable airbag 52.

[0022] A ventilation ring 53 is installed in the connecting block 51. The ventilation ring 53 is ventilated through the composite cable 4a (ventilation pipe) so that the ventilation ring 53 can draw in or blow air.

[0023] Automotive parts use a large number of pipes (straight and bent pipes), which are laser-drilled and laser-cut as needed. When the pipes are laser-cut (laser drilling, laser cutting), the slag produced will adhere to the inner wall of the pipe, affecting the cleanliness of the inner wall. In the existing technology, such as patent applications with publication numbers CN113084364A (a continuous inner wall protection laser pipe cutting machine) and CN118455782A (pipe laser cutting equipment), although they disclose that the problem of slag adhering to the inner wall of the pipe can be overcome by setting a shielding element inside the pipe, they can only be used for shielding straight pipes and cannot be used for shielding bent pipes, thus limiting the application scenarios.

[0024] In use, as shown in Figures 2 and 3, the operator disassembles the composite cable 4a on the right side from the sliding fixing member 5 on the right side, and then passes the composite cable 4a through the pipe 100. Then, as shown in Figure 1, the pipe 100 is placed into the two adjustable clamps 2, and the two adjustable clamps 2 are controlled to clamp and fix both ends of the pipe 100. Afterwards, the composite cable 4a on the right side and the sliding fixing member 5 on the right side are reassembled and fixed, resulting in the state shown in Figure 2. Subsequently, the laser cutter 3 (controlled by a multi-axis robotic arm) is controlled to perform laser cutting on the pipe 100, for example, cutting... Laser drilling is performed to cut the pipe 100. While the laser cutter 3 is performing laser cutting, the two left and right winding components 4 are controlled to wind up or unwind the composite cable 4a, so that the two sliding fixing parts 5 move with the laser cutter 3 inside the pipe 100, allowing the spring parts 8 and the metal mesh 9 to move to the laser cutting point of the pipe 100. The spring parts 8 are evenly distributed in a ring shape, and the spring parts 8 form a space to accommodate the cutting waste. The cutting waste generated by laser drilling is accommodated by the spring parts 8, and the molten slag generated by laser cutting is intercepted and blocked by the metal mesh 9. Of course, the spring parts 8 also intercept and block the molten slag.

[0025] Furthermore, when the present invention performs laser cutting (laser drilling, laser cutting) on ​​the bent portion of the pipe 100, when the two sliding fixing members 5 move to the bent portion of the pipe 100, the movable spherical connection structure of the ball socket member 6 and the ball head member 7 allows the two sliding fixing members 5 to remain in contact with the inner wall of the pipe 100, sliding on the inner wall of the bent portion of the pipe 100, so that the sliding fixing members 5 can move to the bent portion of the pipe 100 along with the spring member 8 and the metal mesh 9; when laser cutting is performed on the bent portion, the spring member 8 and the metal mesh 9 intercept and block the cutting waste and slag generated by laser cutting; further still, when the pipe 100 is cut, for example, when the bent portion is cut... When laser cutting is performed on the curved part, as shown in Figure 4, the telescopic part of the locking electric push rod 6a in the ball socket 6 can be pushed out, so that the telescopic part abuts against the ball head 7, locking the ball socket 6 and the ball head 7. In this way, the ball socket 6 and the ball head 7 cannot move freely, and the two sliding fixing parts 5 cannot move relative to each other. At the same time, the expansion air bladder 52 in the sliding fixing part 5 is controlled to fully expand, so that the sliding fixing part 5 can be fixed in the pipe 100. Thus, by using the locked ball socket 6 and the ball head 7, and the sliding fixing parts 5 fixed on both sides of the pipe cutting point, additional internal support is provided for the pipe cutting point, so as to avoid the pipe cutting point from being damaged due to loss of support during pipe cutting.

[0026] It should be noted that, as shown in Figure 4, fumes are also generated during laser cutting of the pipe 100. At this time, the ventilation ring 53 can be controlled to draw in the fumes, preventing them from remaining inside the pipe. Simultaneously, after the sliding fixing member 5 enters the pipe 100, the expansion airbag 52 partially expands, allowing the sliding fixing member 5 to slide within the pipe 100. The expansion airbag 52 is in close contact with the inner wall of the pipe 100, which serves two purposes: firstly, it seals both ends of the cut section of the pipe 100, improving the fumes removal effect of the ventilation ring 53; secondly, the close contact between the expansion airbag 52 and the inner wall of the pipe 100 allows the wiping cloth to wipe the inner wall of the pipe 100 during movement. Furthermore, by setting the shielding member as a spring member 8 with deformable capabilities and a metal mesh 9, this invention can adapt to the state changes caused by the spherical movement of the two sliding fixing members 5.

[0027] It should be noted that the position of the adjustable clamp 2 on the mounting platform 1 can be adjusted to adapt to the length of the pipe. Specifically, in this embodiment, the adjustable clamp 2 has several electric push rods, and the telescopic part of the adjustable clamp 2 is fixedly connected to the clamping seat. The clamping seat is moved by the electric push rods to clamp and fix the pipe 100.

[0028] The laser cutting machine of the present invention addresses the pain points of laser cutting of automotive pipes, achieving full coverage processing of straight and curved pipes. Its spherical connection between the ball socket 6 and the ball head 7, combined with a deformable spring 8 and a metal mesh 9 shielding component, can move with the cutting position, precisely intercepting molten slag and accommodating cutting waste, preventing contamination of the inner wall of the pipe 100. The ventilation ring 53, in conjunction with the expansion airbag 52, seals both ends of the cutting point, efficiently removing cutting fumes. Simultaneously, the wiping cloth on the outer ring of the expansion airbag 52 cleans the inner wall. During the cutting operation, the locking electric push rod 6a fixes the spherical connection, and the expansion airbag 52 fully expands to support both ends of the pipe 100, providing support inside the pipe 100 and preventing deformation and damage at the cutting point.

[0029] Example 2: Based on Example 1, as shown in Figures 6-7, the winding assembly 4 is provided with a guide ring 4c for guiding the composite cable 4a. The guide ring 4c is fixed to the left bracket of the mounting platform 1. At the connection between the composite cable 4a and the sliding fixing member 5, a guide block 4b is provided. The sliding fixing member 5 is guided to move within the tube 100 by the guide block 4b.

[0030] It also includes a self-cleaning component, which includes a mounting bracket 11, a rotation limiting plate 12, an annular guide rail assembly 13, a drive motor 14, a gear 15, a rack 16, a connector 17, and a rotating ring 18. The mounting bracket 11 is fixedly attached to the left side of the mounting platform 1. The rotation limiting plate 12 is fixedly attached to the left side of the mounting bracket 11. The annular guide rail assembly 13 is fixedly attached to the right side of the mounting bracket 11. The annular guide rail assembly 13 includes an outer fixed part and an inner rotating part. The rack 16 is fixedly attached to the inner side of the inner rotating part of the annular guide rail assembly 13. The drive motor 14 is mounted on the mounting bracket 11. The gear 15 is fixedly attached to the rotating part of the drive motor 14, and the gear 15 meshes with the rack 16. The rotating part of the annular guide rail assembly 13 is connected to the rotating ring 18 through the connector 17. The rotating ring 18 drives one of the sliding fixed parts 5 to move, twisting the shielding part and removing the cutting waste and slag on the shielding part.

[0031] Connector 17 is an electric push rod.

[0032] As shown in Figure 6, the rotation limiting plate 12 has a limiting hole for locking the guide block 4b, and a limiting strip is provided in the limiting hole to limit the rotation of the guide block 4b.

[0033] As shown in Figure 7, the rotating ring 18 consists of a mounting ring 18a and an airbag gasket 18b installed inside the mounting ring 18a. Several limiting strips are provided inside the airbag gasket 18b to restrict the rotation of the sliding fixing member 5.

[0034] As shown in Figures 6 and 7, after the laser cutting of the pipe 100 is completed, the two winding components 4 drive the sliding fixing part 5, the ball socket part 6, the ball head part 7, the spring part 8, and the metal mesh 9 to move to the left and reset, so that the guide block 4b on the left side contacts the limiting hole of the rotation limiting plate 12, while the sliding fixing part 5 on the right side moves into the rotating ring 18; wherein, the limiting hole of the rotation limiting plate 12 is provided with a limiting strip for limiting the rotation of the guide block 4b; the rotating ring 18 is composed of a mounting ring 18a and an airbag gasket 18b installed inside the mounting ring 18a, and the inner side of the airbag gasket 18b is provided with several limiting strips for limiting the rotation of the sliding fixing part 5.

[0035] When self-cleaning of the spring 8 and metal mesh 9 is required, the drive motor 14 drives the gear 15 to rotate reciprocally. The gear 15 drives the rack 16 and the inner rotating part of the annular guide rail assembly 13 to rotate reciprocally. This, in turn, drives the rotating ring 18 to rotate reciprocally through the connecting piece 17, causing the sliding fixing piece 5 on the right side to rotate reciprocally. The sliding fixing piece 5 on the left side is restricted from rotating by the guide block 4b and the rotation limiting plate 12. By allowing only the sliding fixing piece 5 on the right side to rotate reciprocally, the spring 8 and metal mesh 9 are repeatedly twisted, removing cutting waste and slag from the spring 8 and metal mesh 9. In addition, during this process, the ball socket 6 and the ball head 7 are in the unlocked state, and the telescopic part of the locking electric push rod 6a is not extended. Furthermore, in order to improve the torsional effect, the telescopic parts of the two connecting parts 17 (electric push rods) can be controlled to extend one and retract the other, so that the rotating ring 18 is in an eccentric state within the annular guide rail assembly 13, thereby realizing the eccentric torsion of the spring 8 and the metal mesh 9, and controlling the venting ring 53 to blow air, improving the removal effect of cutting waste and slag. It should be noted that the airbag gasket 18b is set to make slight deformation to adapt to the eccentric torsion action of the spring 8 and the metal mesh 9.

[0036] As described above, after the cutting is completed, the equipment can automatically drive the sliding fixing part 5 to reset, and drive the single-sided sliding fixing part 5 to rotate back and forth through the drive motor 14. The torsion spring part 8 and the metal mesh 9 realize the automatic falling off of waste slag. With the eccentric torsion action design and the air blowing function of the ventilation ring 53, the cleaning is more thorough. The deformation characteristics of the airbag gasket 18b ensure that the eccentric torsion is smooth. There is no need to manually disassemble the shielding parts for cleaning, which greatly reduces the maintenance workload and time cost.

[0037] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A laser cutting machine for automotive parts, comprising a mounting table (1), on which an adjustable clamp (2) is mounted, for clamping and fixing a tube (100) by the adjustable clamp (2), and for laser cutting the tube (100) by a laser cutter (3); characterized in that: On each side of the mounting platform (1), there is a winding assembly (4), in which a composite cable (4a) is wound up. The end of the left composite cable (4a) is detachably connected to a sliding fastener (5), and the end of the right composite cable (4a) is detachably connected to another sliding fastener (5). The two sliding fasteners (5) are spherically connected by a ball socket (6) and a ball head (7). A shielding component is provided between the two sliding fasteners (5) to shield the cutting waste and slag.

2. The laser cutting machine for automotive parts according to claim 1, characterized in that: The shielding component includes a spring element (8) located on the outside and a metal mesh (9) located on the inside. Several spring elements (8) are evenly distributed in a ring shape. The spring elements (8) contain the cutting waste, and the metal mesh (9) shields the molten slag.

3. The laser cutting machine for automotive parts according to claim 2, characterized in that: A power line is provided in the composite cable (4a), and a locking electric push rod (6a) is provided in the ball socket (6). The locking electric push rod (6a) is powered by the composite cable (4a), and the extension part of the locking electric push rod (6a) is pushed out and abuts against the ball head (7) to lock the ball socket (6) and the ball head (7).

4. The laser cutting machine for automotive parts according to claim 3, characterized in that: The composite cable (4a) is provided with a venting tube, and the sliding fixing member (5) includes a connecting block (51) and an inflatable airbag (52) provided on the outside of the connecting block (51). The inflatable airbag (52) is vented through the composite cable (4a) to make the inflatable airbag (52) contract or expand. When the inflatable airbag (52) is fully expanded, the sliding fixing member (5) can be fixed in the tube (100). When the inflatable airbag (52) is not fully expanded, the sliding fixing member (5) can slide in the tube (100), and the inflatable airbag (52) is in close contact with the inner wall of the tube (100). A wiping cloth is provided on the outer ring surface of the inflatable airbag (52).

5. The laser cutting machine for automotive parts according to claim 4, characterized in that: A ventilation ring (53) is installed in the connecting block (51). The ventilation ring (53) is ventilated through the composite cable (4a) so that the ventilation ring (53) can draw in or blow air.

6. The laser cutting machine for automotive parts according to claim 5, characterized in that: The winding assembly (4) is provided with a guide ring (4c) for guiding the composite cable (4a), and the guide ring (4c) is fixed to the left bracket of the mounting platform (1); at the connection between the composite cable (4a) and the sliding fastener (5), a guide block (4b) is provided, and the sliding fastener (5) is guided to move in the tube (100) by the guide block (4b).

7. The laser cutting machine for automotive parts according to claim 6, characterized in that: It also includes a self-cleaning component, which includes a mounting bracket (11); the mounting bracket (11) is fixedly attached to the left side bracket of the mounting platform (1); a rotation limiting plate (12) is fixedly attached to the left side of the mounting bracket (11); an annular guide rail assembly (13) is fixedly attached to the right side of the mounting bracket (11), the annular guide rail assembly (13) includes an outer fixed part and an inner rotating part; a rack (16) is fixedly attached to the inner side of the inner rotating part of the annular guide rail assembly (13); a drive motor (14) is mounted on the mounting bracket (11); a gear (15) is fixedly attached to the rotating part of the drive motor (14), and the gear (15) meshes with the rack (16); the inner rotating part of the annular guide rail assembly (13) is connected to a rotating ring (18) through a connector (17), and the rotating ring (18) drives one of the sliding fixed parts (5) to move, to twist the shielding part, and remove the cutting waste and slag on the shielding part.

8. The laser cutting machine for automotive parts according to claim 7, characterized in that: The connector (17) is an electric push rod.

9. The laser cutting machine for automotive parts according to claim 8, characterized in that: The rotation limiting plate (12) has a limiting hole for locking the guide block (4b), and a limiting strip for limiting the rotation of the guide block (4b) is provided in the limiting hole.

10. The laser cutting machine for automotive parts according to claim 8, characterized in that: The rotating ring (18) consists of a mounting ring (18a) and an airbag gasket (18b) installed inside the mounting ring (18a). The airbag gasket (18b) has several limiting strips on its inner side to restrict the rotation of the sliding fixing member (5).

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