A system for producing a spoiler for a vehicle

Abstract

The application discloses a kind of automobile spoiler production systems, including injection molding machine, injection gate cutting device and spoiler polishing equipment;Spoiler injection gate cutting device includes laser cutting workbench, is positioned on the laser cutting workbench spoiler positioning tool, is positioned two-dimensional laser marking machine above the laser cutting workbench, two-dimensional laser marking head is arranged on two-dimensional laser marking machine, linear movement module is arranged between spoiler positioning tool and laser cutting workbench, and spoiler positioning tool is movably arranged on linear movement module;Spoiler polishing equipment includes spoiler polishing fixed tool for positioning installation spoiler and spoiler polishing mechanical arm for polishing spoiler edge and gate position and being arranged in spoiler polishing fixed tool, and polishing assembly is arranged at the front end of spoiler polishing mechanical arm.The application improves the cutting efficiency and cutting quality of injection gate on spoiler, and realizes the recycling of injection gate.

Description

Technical Field

[0001] This invention relates to the field of automotive spoiler manufacturing technology, and more specifically to an automotive spoiler production system. Background Technology

[0002] like Figure 12 The image shows a car spoiler. This spoiler is an injection molded part, formed by casting using an injection mold. During the injection molding process, several injection gates are left on the inner side of the upper edge of the spoiler; these injection gates need to be removed after injection molding.

[0003] In existing technologies, the injection gate on the spoiler is usually removed by manual grinding, which is inefficient and cannot guarantee the quality of the gate removal. Furthermore, the removed injection gate is typically discarded as waste, failing to make full use of the material. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes an automotive spoiler production system, aiming to improve the cutting efficiency and quality of injection gates on spoilers, and to achieve the recycling of injection gates. The specific technical solution is as follows:

[0005] A car spoiler production system includes a spoiler injection molding machine, a spoiler injection gate cutting device, and a spoiler grinding equipment arranged sequentially according to the car spoiler production process. The spoiler injection gate cutting device includes a laser cutting worktable, a spoiler positioning fixture mounted on the laser cutting worktable for positioning and installing the spoiler, and a two-dimensional laser marking machine mounted above the laser cutting worktable for cutting the spoiler injection gate. The two-dimensional laser marking machine is equipped with a two-dimensional laser marking head with the laser emission direction facing downwards. A linear motion module is arranged between the spoiler positioning fixture and the laser cutting worktable, and the spoiler positioning fixture is movably mounted on the linear motion module. The spoiler grinding equipment includes a spoiler grinding fixing fixture for positioning and installing the spoiler and a spoiler grinding robotic arm mounted next to the spoiler grinding fixing fixture for grinding the spoiler edge and gate area. A grinding component is provided at the front end of the spoiler grinding robotic arm.

[0006] To ensure sufficient energy for laser cutting, preferably, the two-dimensional laser marking machine is a power-enhanced two-dimensional laser marking machine.

[0007] In this invention, the linear motion module includes a linear guide rail, a slide block movably disposed on the linear guide rail, and a servo motor drive screw disposed between the linear guide rail and the slide block for driving the slide block to move along the linear guide rail; the spoiler positioning fixture is mounted on the slide block.

[0008] During operation, the two-dimensional laser marking head of the two-dimensional laser marking machine emits a laser to cut off the first injection gate located at the injection gate cutting station of the car spoiler. Then, it drives the linear motion module to move the spoiler positioning fixture together with the car spoiler on it to the injection gate cutting station by a distance, and cut off the second injection gate. The above method is used to cut off each injection gate until all injection gates are cut off.

[0009] In this invention, a spoiler injection gate recycling device is further provided between the spoiler injection gate cutting device and the spoiler injection molding machine. The spoiler injection gate recycling device includes an injection gate transfer device, an injection gate crushing device, and a conveying pipe. The injection gate cutting device is equipped with a hopper for collecting the cut injection gates. The inlet of the injection gate transfer device is connected to the outlet of the hopper. The outlet of the injection gate transfer device is connected to the inlet of the injection gate crushing device. The outlet of the injection gate crushing device is connected to the material dispensing system of the injection molding machine through the conveying pipe.

[0010] In this invention, the injection gate transfer device includes a transfer frame and a belt conveyor mounted on the transfer frame. A number of vertically arranged transfer partitions are installed at intervals on the conveyor belt of the belt conveyor. The conveyor belt of the belt conveyor is inclined upward in the direction from the hopper of the injection gate cutting device to the inlet of the injection gate crushing device. Baffles are respectively provided on both sides of the conveyor belt of the belt conveyor on the transfer frame.

[0011] Preferably, the transfer partition is a T-shaped transfer partition composed of a seat block and a vertical plate erected in the middle of the seat block.

[0012] Preferably, the T-shaped transfer partition is a rubber T-shaped transfer partition integrally formed from the rubber seat block and the rubber vertical plate.

[0013] Preferably, the rubber seat block of the T-shaped transfer partition plate is bonded to the conveyor belt of the belt conveyor.

[0014] In this invention, the spoiler grinding and fixing fixture includes a grinding bracket and a surface template disposed on the grinding bracket for positioning the inner surface of the spoiler. The surface template is provided with a plurality of edge positioning blocks for positioning the peripheral contour of the spoiler and support positioning blocks for supporting the inner surface of the spoiler. The edge positioning blocks are provided with arc-shaped positioning steps adapted to the peripheral contour of the spoiler. The support positioning blocks are provided with a plurality of negative pressure suction cups for adhering to the inner surface of the spoiler.

[0015] In this invention, a movable laser protection device is installed on the body of the two-dimensional laser marking machine. The movable laser protection device includes a movable cover. During laser cutting, the movable cover moves away from below the two-dimensional laser marking head. After laser cutting, the movable cover moves back to below the two-dimensional laser marking head to block the laser, thereby preventing employees from accidentally coming into contact with the laser and ensuring the safety of the operators.

[0016] In this invention, the spoiler positioning fixture includes a vertical support and a positioning template disposed on the vertical support for positioning the inner surface of the spoiler. The positioning template is provided with a plurality of contour positioning blocks for positioning the peripheral contour of the spoiler, and the contour positioning blocks are provided with contour positioning steps adapted to the peripheral contour of the spoiler. The positioning template is also provided with a plurality of vacuum suction cups for adhering to the inner surface of the spoiler.

[0017] In this invention, the contour positioning block is provided with a template surface that matches the inner surface of the spoiler.

[0018] To facilitate the loading of the car spoiler by the operator, preferably, the positioning mold is inclined relative to the vertical support; the positioning mold is also provided with a material discharge channel for the injection gate, and the hopper is located below the material discharge channel.

[0019] Preferably, a transfer robot for the spoiler can be installed between the injection molding machine and the injection gate cutting device, and between the injection gate cutting device and the spoiler grinding and fixing fixture, thereby further improving the automation level of the spoiler production system.

[0020] To prevent the car spoiler from being burned during laser cutting, a further improvement is to install a nitrogen jet pipe next to the two-dimensional laser marking head, with the nitrogen jet pipe pointing towards the injection gate cutting station above the laser cutting worktable.

[0021] By setting up a nitrogen injection pipe, a nitrogen protective atmosphere is created around the injection gate of the car spoiler, which can effectively isolate oxygen in the air and prevent the injection gate from burning during cutting.

[0022] To further improve the safety of laser cutting, the two-dimensional laser marking machine is equipped with a mobile laser protection device. The mobile laser protection device includes a support fixed to the body of the two-dimensional laser marking machine, a pair of slide rails set on the support and located below the two-dimensional laser marking head, and a laser protective cover movably set on the pair of slide rails to shield the two-dimensional laser marking head upwards. A linear drive mechanism is connected between the support and the laser protective cover.

[0023] Preferably, the linear drive mechanism is a three-axis cylinder.

[0024] Preferably, the laser protective cover consists of a base plate and surrounding plates erected on three sides of the base plate, and the surrounding plates on the three sides together form a U-shaped frame, with the U-shaped opening of the U-shaped frame facing the support.

[0025] The aforementioned mobile laser protection device operates automatically via PLC commands. When the laser from the 2D laser marking head begins operation, the laser protective cover opens to cut the injection gate on the baffle plate; after cutting, the laser protective cover automatically closes. This effectively prevents employees from accidentally coming into contact with the laser, thus ensuring the safety of the operators.

[0026] In this invention, the injection gate crushing device is equipped with a material level device. When the injection gate collected in the injection gate crushing device reaches a certain height, the injection gate crushing device is activated to turn the injection gate into recycled plastic powder.

[0027] The aforementioned plastic powder is transported to the batching system of the injection molding machine through a conveying pipeline, thereby realizing the recycling of the injection gate.

[0028] The workflow for cutting and recycling injection gates in this invention is as follows:

[0029] (1) Workpiece positioning and installation: The operator installs the spoiler onto the positioning template, and the vacuum suction cup on the positioning template fixes the spoiler.

[0030] (2) Injection gate cutting: The operator turns on the control system and drives the two-dimensional laser marking machine to perform laser cutting of the injection gate.

[0031] (3) Transfer of injection gate: The control system drives the belt conveyor to run. The injection gate cut off from the baffle plate falls into the material discharge channel set on the positioning mold, and then falls into the belt conveyor through the hopper below. It is then pushed by the vertical plate on the conveyor belt to the output end of the belt conveyor and enters the injection gate crushing device.

[0032] (4) Secondary crushing and utilization of injection gates: When the injection gates collected in the injection gate crushing device reach a certain height, the control system drives the injection gate crushing device to run, turning the injection gates into plastic powder that can be reused.

[0033] After the injection gate on the spoiler is cut off, it can be transferred to the spoiler grinding equipment for grinding and finishing of the spoiler edge and the area where the injection gate was cut off.

[0034] In this invention, the grinding assembly includes a pneumatic grinder fixed to the front end of the spoiler grinding robot arm, a grinding disc mounted on the spindle of the pneumatic grinder, and sandpaper disposed on the end face of the grinding disc. A self-inspection device for automatically detecting the wear of the sandpaper on the grinding disc is also provided next to the spoiler grinding robot arm. The self-inspection device includes a detection seat, a central through hole on the detection seat, a detection column movably disposed on the central through hole, a detection head disposed on the upper end of the detection column and located above the central through hole, and a limiting flange disposed on the lower outer circle of the detection column and in contact with the lower end face of the central through hole. A pressure spring for pushing upward against the limiting flange and a distance sensor for detecting the height position of the detection column are also respectively disposed on the detection seat below the detection column. The spoiler grinding robot arm and the distance sensor are respectively connected to the grinding control system.

[0035] Preferably, the detection head is a spherical detection head, and a planar detection surface is also provided on the detection column around the spherical detection head; the grinding control system has a built-in sandpaper wear self-inspection program module; the method for performing sandpaper wear self-inspection using the sandpaper wear self-inspection program module is as follows:

[0036] (1) Detection path planning: Establish the equidistant plane spiral equation in the grinding disc sandpaper wear self-inspection program module, and generate the equidistant plane spiral detection path through the equidistant plane spiral equation.

[0037] (2) Setting the detection start position: The grinding control system drives the spoiler grinding robot arm to move, so that the end face of the grinding disc with sandpaper installed at the front end of the spoiler grinding robot arm is horizontally pressed against the spherical detection head, and the rotation center of the grinding disc is aligned vertically with the center of the spherical detection head, thereby forming the detection start position of the grinding disc.

[0038] (3) Wear self-inspection: The grinding control system calls the grinding disc sandpaper wear self-inspection program module to perform a self-inspection of the grinding disc sandpaper wear. The grinding disc moves in an equidistant plane spiral along an equidistant plane spiral detection path in the horizontal plane, so that the contact position between the grinding disc sandpaper and the spherical detection head on the grinding disc sandpaper plane gradually moves outward from the detection starting position along the spiral trajectory. While the grinding disc moves along the spiral trajectory, the distance sensor located below the detection column synchronously detects the vertical position data and the changes in the vertical position data of the lower end face of the detection column. The changes in the vertical position data and the changes in the vertical position data of the lower end face of the detection column also synchronously reflect the changes in the vertical position data and the changes in the vertical position data of the spherical detection head. When the changes in the vertical position data and the changes in the vertical position data of the spherical detection head exceed the preset threshold, the grinding control system judges that the grinding disc sandpaper wear is out of tolerance, and thus issues an alarm prompt to notify the equipment maintenance personnel to replace the grinding disc.

[0039] Preferably, the wear self-inspection content of step (3) can be repeated to perform a second self-inspection on the wear of the sandpaper on the grinding disc; and during the second self-inspection, the grinding control system also drives the pneumatic grinding machine spindle to rotate, thereby driving the grinding disc to rotate synchronously, so as to realize the self-inspection of the wear of the sandpaper on the grinding disc under the condition of the grinding disc rotating, so as to eliminate the detection blind zone during the first self-inspection (the area between two adjacent spiral segments is the detection blind zone).

[0040] Ideally, the first self-check can be omitted, and only a second self-check can be performed to save self-check time and improve self-check efficiency.

[0041] As a further improvement of the present invention, the sanding disc and sandpaper wear self-inspection program module is further provided with a sanding disc and sandpaper outer periphery wear detection subroutine module, and the sanding control system also calls the sanding disc and sandpaper outer periphery wear detection subroutine module to perform self-inspection of the wear on the outer periphery of the sanding disc and sandpaper; the method of using the sanding disc and sandpaper outer periphery wear detection subroutine module to perform self-inspection of the wear on the outer periphery of the sanding disc and sandpaper is as follows:

[0042] The grinding control system drives the spoiler grinding robotic arm to tilt the sandpaper plane of the grinding disc at a certain angle relative to the horizontal direction. Then, the lowest point of the outer periphery of the sandpaper on the grinding disc is pressed against the planar detection surface located around the spherical detection head. The system then drives the pneumatic grinding machine spindle to rotate, thereby causing the grinding disc to rotate synchronously. While the grinding disc is rotating, a distance sensor located below the detection column simultaneously detects the vertical position data and changes in the vertical position data of the lower end face of the detection column. These changes in the vertical position data of the lower end face of the detection column also reflect the changes in the vertical position data of the planar detection surface. When the changes in the vertical position data of the planar detection surface exceed a preset threshold, the grinding control system determines that the wear of the outer periphery of the sandpaper on the grinding disc is out of tolerance, and issues an alarm to notify the equipment maintenance personnel to replace the grinding disc.

[0043] In this invention, preferably, both the surface of the spherical detection head and the surface of the planar detection surface are provided with a wear-resistant coating (preferably a cemented carbide coating), and the surface roughness of the wear-resistant coating is lower than Ra0.025um.

[0044] Preferably, the spherical detection head is a steel ball with a hard alloy coating, which is fixed to the top of the detection column by a wear-resistant cover plate. The upper surface of the wear-resistant cover plate is coated with a hard alloy, serving as a planar detection surface.

[0045] In this invention, the spoiler grinding robot arm is a multi-axis articulated robot arm.

[0046] The beneficial effects of this invention are:

[0047] First, the automotive spoiler production system of the present invention employs a two-dimensional laser marking machine for injection gate cutting, and a linear motion module is configured on the laser cutting worktable to achieve large-stroke movement of the spoiler positioning fixture. This allows the small-range laser cutting of the two-dimensional laser marking machine to coordinate with the large-stroke movement of the spoiler positioning fixture, completing the cutting of all the dispersed injection gates on the automotive spoiler. This solution can use a small-stroke two-dimensional laser marking machine, thereby effectively reducing the cost of the laser cutting device.

[0048] Secondly, the automotive spoiler production system of the present invention uses a template for positioning and a suction cup for fixing the spoiler positioning fixture and the spoiler grinding and fixing fixture, which is convenient to operate and highly efficient; and uses a two-dimensional laser marking head for two-dimensional laser cutting of the injection gate, which has high cutting accuracy and good quality.

[0049] Third, the automotive spoiler production system of the present invention improves the safety and cutting quality of laser cutting by setting a nitrogen blowing pipe next to the two-dimensional laser marking head.

[0050] Fourth, in the automotive spoiler production system of the present invention, a mobile laser protection device is installed on the two-dimensional laser marking machine, which further improves the safety of laser cutting.

[0051] Fifth, the automotive spoiler production system of the present invention, by setting up an injection gate cutting device, an injection gate transfer device, and an injection gate crushing device, realizes the secondary recycling of injection gates, saves plastic resources, and is environmentally friendly.

[0052] Sixth, the automotive spoiler production system of the present invention uses laser cutting of injection gates, which has higher production efficiency and reduces dust from grinding operations compared to the traditional method of removing injection gates by grinding.

[0053] Seventh, the automotive spoiler production system of the present invention is equipped with a self-inspection device for sandpaper wear. The self-inspection device for sandpaper wear can perform a self-inspection of sandpaper wear before the spoiler is officially sanded, or it can perform a self-inspection of sandpaper wear after a certain number of spoilers are sanded during mass production, thereby avoiding sanding quality problems caused by excessive sandpaper wear and thus improving the sanding quality of automotive spoilers. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the plan layout of an automotive spoiler production system according to the present invention;

[0055] Figure 2 yes Figure 1 The diagram shows the structure of the injection gate cutting device and the baffle injection gate recycling device.

[0056] Figure 3 yes Figure 2 A schematic diagram of the injection gate cutting device (right view);

[0057] Figure 4 yes Figure 3 A three-dimensional structural diagram of the laser cutting worktable and spoiler positioning fixture.

[0058] Figure 5 yes Figure 4 A magnified view of a portion of the document;

[0059] Figure 6 yes Figure 3 A schematic diagram of the structure of a mobile laser protection device;

[0060] Figure 7 yes Figure 1 A schematic diagram of the spoiler grinding and fixing fixture in the middle;

[0061] Figure 8 yes Figure 7 A magnified view of a portion of the document;

[0062] Figure 9 This is one of the structural schematic diagrams of a sandpaper wear self-inspection device for a grinding disc;

[0063] Figure 10 This is the second schematic diagram of the self-inspection device for sandpaper wear on the grinding disc;

[0064] Figure 11 This is a schematic diagram of the structure of the equidistant planar spiral detection path;

[0065] Figure 12 This is a schematic diagram of the structure of a car spoiler.

[0066] In the diagram: 100, injection gate cutting device; 200, injection gate crushing device; 300, injection gate transfer device; 400, spoiler injection gate recycling device; 500, spoiler injection molding machine; 600, spoiler grinding equipment.

[0067] In the diagram: 1. Laser cutting worktable; 2. Spoiler positioning fixture; 3. 2D laser marking machine; 4. 2D laser marking head; 5. Linear movement module; 6. Vertical support; 7. Positioning template; 8. Contour positioning block; 9. Contour positioning step; 10. Vacuum suction cup; 11. Nitrogen blowing pipe; 12. Injection gate cutting station; 13. Linear guide rail; 14. Slide block; 15. Servo motor drive screw; 16. Mobile laser protection device; 17. Machine body; 18. Support; 19. Slide rail; 20. Laser protective cover; 21. Linear drive mechanism (three-axis cylinder); 22. Base plate; 23. Enclosure; 24. U-shaped frame; 25. Template surface; 26. Material drop channel; 27. Spoiler; 28. Hopper; 29. ​​Conveying pipe.

[0068] In the diagram: 301, transfer frame; 302, belt conveyor; 303, transfer partition plate; 304, baffle; 305, seat block; 306, vertical plate.

[0069] In the diagram: 501, the material dispensing system of the injection molding machine.

[0070] In the diagram: 601, spoiler grinding fixture; 602, spoiler grinding robotic arm; 603, grinding assembly; 604, grinding bracket; 605, profile template; 606, edge positioning block; 607, support positioning block; 608, arc-shaped positioning step; 609, negative pressure suction cup; 610, pneumatic grinder; 611, grinding disc; 612, sandpaper; 613, grinding disc and sandpaper wear self-inspection device; 614, detection seat; 615, detection column; 616, detection head; 617, limit flange; 618, top pressure spring; 619, distance sensor; 620, planar detection surface; 621, equidistant planar spiral detection path. Detailed Implementation

[0071] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0072] like Figures 1 to 12 The illustration shows an embodiment of an automotive spoiler production system according to the present invention, comprising a spoiler injection molding machine 500, a spoiler injection gate cutting device 100, and a spoiler grinding device 600 arranged sequentially according to the production process of an automotive spoiler 27; wherein, the spoiler injection gate cutting device 100 includes a laser cutting worktable 1, a spoiler positioning fixture 2 disposed on the laser cutting worktable 1 for positioning and installing the spoiler 27, and a two-dimensional laser marking machine 3 disposed above the laser cutting worktable 1 for cutting the spoiler injection gate, the two-dimensional laser marking machine 3 being equipped with... A two-dimensional laser marking head 4 with the laser emission direction facing downwards is provided. A linear motion module 5 is provided between the spoiler positioning fixture 2 and the laser cutting worktable 1. The spoiler positioning fixture 2 is movably mounted on the linear motion module 5. The spoiler grinding equipment 600 includes a spoiler grinding fixing fixture 601 for positioning and installing the spoiler 27 and a spoiler grinding robot arm 602 provided next to the spoiler grinding fixing fixture 601 for grinding the edge and gate of the spoiler 27. A grinding component 603 is provided at the front end of the spoiler grinding robot arm 602.

[0073] To ensure sufficient energy for laser cutting, preferably, the two-dimensional laser marking machine 3 is a power-enhanced two-dimensional laser marking machine.

[0074] In this embodiment, the linear motion module 5 includes a linear guide rail 13, a slide block 14 movably disposed on the linear guide rail 13, and a servo motor drive screw 15 disposed between the linear guide rail 13 and the slide block 14 for driving the slide block 14 to move along the linear guide rail 13; the spoiler positioning fixture 2 is mounted on the slide block 14.

[0075] During operation, the two-dimensional laser marking head 4 of the two-dimensional laser marking machine 3 emits a laser to cut off the first injection gate located at the injection gate cutting station of the car spoiler 27. Then, it drives the linear motion module 5 to move the spoiler positioning fixture 2 together with the car spoiler 27 to the injection gate cutting station 12 by a distance to cut off the second injection gate. The above method is used to cut off each injection gate until all injection gates are cut off.

[0076] In this embodiment, a spoiler injection gate recycling device 400 is also provided between the spoiler injection gate cutting device 100 and the spoiler injection molding machine 500. The spoiler injection gate recycling device 400 includes an injection gate transfer device 300, an injection gate crushing device 200, and a conveying pipe 29. The injection gate cutting device 100 is provided with a hopper 28 for collecting the cut injection gates. The inlet of the injection gate transfer device 300 is connected to the outlet of the hopper 28, and the outlet of the injection gate transfer device 300 is connected to the inlet of the injection gate crushing device 200. The outlet of the injection gate crushing device 200 is connected to the material dispensing system 501 of the injection molding machine through the conveying pipe 29.

[0077] In this embodiment, the injection gate transfer device 300 includes a transfer frame 301 and a belt conveyor 302 mounted on the transfer frame 301. A plurality of vertically arranged transfer partition plates 303 are installed at intervals on the conveyor belt of the belt conveyor 302. The conveyor belt of the belt conveyor 302 is inclined upward in the direction from the hopper 28 of the injection gate cutting device 100 to the inlet of the injection gate crushing device 200. Baffles 304 are respectively provided on both sides of the conveyor belt of the belt conveyor 302 on the transfer frame 301.

[0078] Preferably, the transfer partition is a T-shaped transfer partition composed of a seat block 305 and a vertical plate 306 erected in the middle of the seat block 305.

[0079] Preferably, the T-shaped transfer partition is a rubber T-shaped transfer partition integrally formed from the rubber seat block 305 and the rubber vertical plate 306.

[0080] Preferably, the rubber seat block 305 of the T-shaped transfer partition plate is bonded to the conveyor belt of the belt conveyor 302.

[0081] In this embodiment, the spoiler grinding and fixing fixture 601 includes a grinding bracket 604 and a surface template 605 disposed on the grinding bracket 604 for positioning the inner surface of the spoiler 27. The surface template 605 is provided with a plurality of edge positioning blocks 606 for positioning the peripheral contour of the spoiler 27 and support positioning blocks 607 for supporting the inner surface of the spoiler 27. The edge positioning blocks 606 are provided with arc-shaped positioning steps 608 adapted to the peripheral contour of the spoiler 27. The support positioning blocks 607 are provided with a plurality of negative pressure suction cups 609 for adhering to the inner surface of the spoiler 27.

[0082] In this embodiment, a mobile laser protection device 16 is installed on the body of the two-dimensional laser marking machine 3. The mobile laser protection device 16 includes a movable cover. During laser cutting, the movable cover moves away from below the two-dimensional laser marking head 4. After laser cutting, the movable cover moves back to below the two-dimensional laser marking head 4 to block the laser, thereby preventing employees from accidentally contacting the laser and ensuring the safety of the operators.

[0083] In this embodiment, the spoiler positioning fixture 2 includes a vertical support 6 and a positioning mold 7 mounted on the vertical support 6 for positioning the inner surface of the spoiler 27. The positioning mold 7 is provided with a plurality of contour positioning blocks 8 for positioning the peripheral contour of the spoiler, and each contour positioning block 8 is provided with a contour positioning step 9 adapted to the peripheral contour of the spoiler. The positioning mold 7 is also provided with a plurality of vacuum suction cups 10 for adhering to the inner surface of the spoiler 27.

[0084] In this embodiment, the contour positioning block 8 is provided with a template surface 25 that is adapted to the inner surface of the spoiler 27.

[0085] To facilitate the loading of the car spoiler 27 by the operator, preferably, the positioning mold 7 is inclined relative to the vertical bracket 6; the positioning mold 7 is also provided with a material discharge channel 26 for the injection gate, and the hopper is located below the material discharge channel.

[0086] Preferably, a transfer robot for the spoiler 27 (not shown in the figure) can be set between the injection molding machine 500 and the injection gate cutting device 100, and between the injection gate cutting device 100 and the spoiler grinding and fixing fixture 601, thereby further improving the automation level of the spoiler production system.

[0087] To prevent the car spoiler 27 from being burned during laser cutting, a further improvement is to install a nitrogen jet pipe 11 next to the two-dimensional laser marking head 4, with the nitrogen jet pipe 11 pointing towards the injection gate cutting station 12 above the laser cutting worktable 1.

[0088] By setting up a nitrogen injection pipe 11, a nitrogen protective atmosphere is formed around the injection gate of the car spoiler 27, which can effectively isolate oxygen in the air and prevent the injection gate from burning during cutting.

[0089] To further improve the safety of laser cutting, a mobile laser protection device 16 is installed on the two-dimensional laser marking machine 3. The mobile laser protection device 16 includes a support 18 fixed on the body 17 of the two-dimensional laser marking machine 3, a pair of slide rails 19 set on the support 18 and located below the two-dimensional laser marking head 4, and a laser protective cover 20 movably set on the pair of slide rails 19 for upward shielding of the two-dimensional laser marking head 4. A linear drive mechanism 21 is connected between the support 18 and the laser protective cover 20.

[0090] Preferably, the linear drive mechanism 21 is a three-axis cylinder.

[0091] Preferably, the laser protective cover 20 is composed of a base plate 22 and surrounding plates 23 erected on three sides of the base plate 22, and the surrounding plates 23 on the three sides together form a U-shaped frame 24, with the U-shaped opening of the U-shaped frame 24 facing the support 18.

[0092] The aforementioned mobile laser protection device 16 operates automatically via PLC commands. When the laser from the two-dimensional laser marking head 4 begins operation, the laser protective cover 20 opens to cut the injection gate on the baffle 27; after cutting, the laser protective cover 20 automatically closes. This prevents employees from accidentally coming into contact with the laser, thus ensuring the safety of the operators.

[0093] In this embodiment, the injection gate crushing device 200 is equipped with a material level device. When the injection gate collected in the injection gate crushing device 200 reaches a certain height, the injection gate crushing device 300 is activated to turn the injection gate into plastic powder that can be reused.

[0094] The aforementioned plastic powder is transported to the batching system of the injection molding machine through a conveying pipeline, thereby realizing the recycling of the injection gate.

[0095] The workflow for cutting and recycling injection gates in this embodiment is as follows:

[0096] (1) Workpiece positioning and installation: The operator installs the spoiler 27 onto the positioning template 7, and the vacuum suction cup 10 on the positioning template 7 fixes the spoiler 27.

[0097] (2) Injection gate cutting: The operator turns on the control system and drives the two-dimensional laser marking machine 3 to perform laser cutting of the injection gate.

[0098] (3) Transfer of injection gate: The control system drives the belt conveyor 302 to run. The injection gate cut off from the baffle 27 falls into the material discharge channel 26 set on the positioning mold 7, and then falls into the belt conveyor 302 through the hopper 28 below. It is then pushed to the output end of the belt conveyor 302 by the vertical plate 306 on the conveyor belt of the belt conveyor 302 and enters the injection gate crushing device 200.

[0099] (4) Secondary crushing and utilization of injection gates: When the injection gates collected in the injection gate crushing device 200 reach a certain height, the control system drives the injection gate crushing device 200 to run, turning the injection gates into plastic powder that can be reused.

[0100] After the injection gate on the spoiler 27 is cut off, it can be transferred to the spoiler grinding equipment 600 for grinding and finishing of the edge of the spoiler 27 and the area where the injection gate was cut off.

[0101] In this embodiment, the polishing assembly 603 includes a pneumatic polisher 610 fixed to the front end of the spoiler polishing robot arm 602, a polishing disc 611 mounted on the spindle of the pneumatic polisher 610, and sandpaper disposed on the end face of the polishing disc 611. A self-inspection device 613 for automatically detecting the wear of the sandpaper on the polishing disc is also provided beside the spoiler polishing robot arm 602. The self-inspection device 613 includes a detection seat 614, a central through hole disposed on the detection seat 614, and a detection sensor movably disposed on the central through hole. The system includes a column 615, a detection head 616 located on the upper end of the detection column 615 and above the central through hole, a limiting flange 617 located on the lower outer circle of the detection column 615 and in contact with the lower end face of the central through hole, and a top pressure spring 618 for pressing the limiting flange 617 upward on the detection seat 614 located below the detection column 615, and a distance sensor 619 for detecting the height position of the detection column 615. The spoiler grinding robot arm 602 and the distance sensor 619 are respectively connected to the grinding control system.

[0102] Preferably, the detection head 616 is a spherical detection head, and a planar detection surface 620 is also provided on the detection column 615 around the spherical detection head 616; the grinding control system has a built-in grinding disc sandpaper wear self-inspection program module; the method of using the grinding disc sandpaper wear self-inspection program module to perform grinding disc sandpaper wear self-inspection is as follows (reference) Figure 9 ):

[0103] (1) Detection path planning: Establish the equidistant plane spiral equation in the grinding disc sandpaper wear self-inspection program module, and generate the equidistant plane spiral detection path 621 through the equidistant plane spiral equation;

[0104] (2) Setting the detection start position: The grinding control system drives the spoiler grinding robot arm 602 to move, so that the end face of the grinding disc 611 with sandpaper 612 installed at the front end of the spoiler grinding robot arm 602 is horizontally pressed against the spherical detection head 616, and the rotation center of the grinding disc 611 is directly aligned with the center of the spherical detection head 616, thereby forming the detection start position of the grinding disc 611;

[0105] (3) Wear self-inspection: The grinding control system calls the grinding disc sandpaper wear self-inspection program module to perform a self-inspection of the grinding disc sandpaper wear. The grinding disc 611 moves in an equidistant plane spiral path in the horizontal plane, so that the contact position between the grinding disc 611 and the spherical detection head 616 on the sandpaper plane gradually moves outward from the detection start position according to the spiral trajectory. While the grinding disc moves according to the spiral trajectory, the distance sensor 619 located below the detection column 615 simultaneously detects the vertical position data and the change of vertical position data of the lower end face of the detection column 615. The vertical position data and the change of vertical position data of the lower end face of the detection column 615 also simultaneously reflect the vertical position data and the change of vertical position data of the spherical detection head 616. When the vertical position data and the change of vertical position data of the spherical detection head 616 exceed the preset threshold, the grinding control system judges that the grinding disc sandpaper wear is out of tolerance, and thus issues an alarm prompt to notify the equipment maintenance personnel to replace the grinding disc.

[0106] Preferably, the wear self-inspection content of step (3) can be repeated to perform a second self-inspection on the wear of the sandpaper on the grinding disc; and during the second self-inspection, the grinding control system also drives the main shaft of the pneumatic grinder 610 to rotate, thereby driving the grinding disc 611 to rotate synchronously, so as to realize the self-inspection of the wear of the sandpaper on the grinding disc when the grinding disc 611 is rotating, so as to eliminate the detection blind zone during the first self-inspection (the area between two adjacent spiral segments is the detection blind zone).

[0107] Ideally, the first self-check can be omitted, and only a second self-check can be performed to save self-check time and improve self-check efficiency.

[0108] As a further improvement to this embodiment, the sanding disc and sandpaper wear self-inspection program module is further provided with a sanding disc and sandpaper outer periphery wear detection subroutine module. The sanding control system also calls the sanding disc and sandpaper outer periphery wear detection subroutine module to perform self-inspection of the wear on the outer periphery of the sanding disc and sandpaper. The method of using the sanding disc and sandpaper outer periphery wear detection subroutine module to perform self-inspection of the wear on the outer periphery of the sanding disc and sandpaper is as follows (refer to the following). Figure 10 ):

[0109] The grinding control system drives the spoiler grinding robot arm 602 to move, causing the sandpaper plane of the grinding disc 611 to tilt at a certain angle relative to the horizontal direction. Then, the lowest point of the outer periphery of the sandpaper on the grinding disc is pressed against the planar detection surface 620 located on the periphery of the spherical detection head 616. The system then drives the main shaft of the pneumatic grinder 610 to rotate, thereby causing the grinding disc 611 to rotate synchronously. While the grinding disc 611 is rotating, the distance sensor 619 located below the detection column 615 synchronously detects the vertical position data and changes in the vertical position data of the lower end face of the detection column 615. The changes in the vertical position data of the lower end face of the detection column 615 also synchronously reflect the changes in the vertical position data and changes in the vertical position data of the planar detection surface 620. When the changes in the vertical position data and changes in the vertical position data of the planar detection surface 620 exceed a preset threshold, the grinding control system determines that the wear of the outer periphery of the sandpaper on the grinding disc is out of tolerance, and issues an alarm to notify the equipment maintenance personnel to replace the grinding disc.

[0110] In this embodiment, preferably, the surface of the spherical detection head 616 and the surface of the planar detection surface 620 are both provided with a wear-resistant coating (preferably a hard alloy coating), and the surface roughness of the wear-resistant coating is lower than Ra0.025um.

[0111] Preferably, the spherical detection head 616 is a steel ball with a hard alloy coating, which is fixed to the top of the detection column 615 by a wear-resistant cover plate. The upper surface of the wear-resistant cover plate is coated with a hard alloy, serving as a planar detection surface 620.

[0112] In this invention, the spoiler grinding robot arm 602 is a multi-axis articulated robot arm.

[0113] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A vehicle spoiler production system, characterized in that, The system includes a spoiler injection molding machine, a spoiler injection gate cutting device, and a spoiler grinding equipment, arranged sequentially according to the production process of an automotive spoiler. The spoiler injection gate cutting device includes a laser cutting worktable, a spoiler positioning fixture mounted on the laser cutting worktable for positioning and installing the spoiler, and a two-dimensional laser marking machine mounted above the laser cutting worktable for cutting the spoiler injection gate. The two-dimensional laser marking machine is equipped with a two-dimensional laser marking head with the laser emission direction facing downwards. A linear motion module is arranged between the spoiler positioning fixture and the laser cutting worktable, and the spoiler positioning fixture is movably mounted on the linear motion module. The spoiler grinding equipment includes a spoiler grinding fixing fixture for positioning and installing the spoiler and a spoiler grinding robotic arm mounted next to the spoiler grinding fixing fixture for grinding the spoiler edges and gate area. A grinding component is provided at the front end of the spoiler grinding robotic arm. The grinding assembly includes a pneumatic grinder fixed to the front end of the spoiler grinding robot arm, a grinding disc mounted on the spindle of the pneumatic grinder, and sandpaper disposed on the end face of the grinding disc. A self-inspection device for automatically detecting the wear of the sandpaper on the grinding disc is also provided next to the spoiler grinding robot arm. The self-inspection device includes a detection seat, a central through hole on the detection seat, a detection column movably disposed on the central through hole, a detection head disposed on the upper end of the detection column and located above the central through hole, and a limiting flange disposed on the lower outer circle of the detection column and in contact with the lower end face of the central through hole. A pressure spring for pushing upward against the limiting flange and a distance sensor for detecting the height of the detection column are also disposed on the detection seat below the detection column. The spoiler grinding robot arm and the distance sensor are respectively connected to the grinding control system.

2. The automotive spoiler production system according to claim 1, characterized in that, A spoiler injection gate recycling device is also provided between the spoiler injection gate cutting device and the spoiler injection molding machine. The spoiler injection gate recycling device includes an injection gate transfer device, an injection gate crushing device, and a conveying pipe. The injection gate cutting device is equipped with a hopper for collecting the cut injection gates. The inlet of the injection gate transfer device is connected to the outlet of the hopper. The outlet of the injection gate transfer device is connected to the inlet of the injection gate crushing device. The outlet of the injection gate crushing device is connected to the material dispensing system of the injection molding machine through the conveying pipe.

3. The automotive spoiler production system according to claim 2, characterized in that, The injection gate transfer device includes a transfer frame and a belt conveyor mounted on the transfer frame. A number of vertically arranged transfer partitions are installed at intervals on the conveyor belt of the belt conveyor. The conveyor belt of the belt conveyor is inclined upward in the direction from the hopper of the injection gate cutting device to the inlet of the injection gate crushing device. Baffles are respectively provided on both sides of the conveyor belt of the belt conveyor on the transfer frame.

4. The automotive spoiler production system according to claim 1, characterized in that, The spoiler grinding and fixing fixture includes a grinding bracket and a surface template mounted on the grinding bracket for positioning the inner surface of the spoiler. The surface template is provided with a number of edge positioning blocks for positioning the peripheral contour of the spoiler and support positioning blocks for supporting the inner surface of the spoiler. The edge positioning blocks are provided with arc-shaped positioning steps that are adapted to the peripheral contour of the spoiler. The support positioning blocks are provided with a number of negative pressure suction cups for adhering to the inner surface of the spoiler.

5. The automotive spoiler production system according to claim 2, characterized in that, The spoiler positioning fixture includes a vertical support and a positioning template mounted on the vertical support for positioning the inner surface of the spoiler. The positioning template is provided with a number of contour positioning blocks for positioning the peripheral contour of the spoiler. The contour positioning blocks are provided with contour positioning steps that are adapted to the peripheral contour of the spoiler. The positioning template is also provided with a number of vacuum suction cups for adhering to the inner surface of the spoiler.

6. The automotive spoiler production system according to claim 5, characterized in that, The positioning mold is inclined relative to the vertical support; the positioning mold is also provided with a material discharge channel for the injection gate, and the hopper is located below the material discharge channel.

7. The automotive spoiler production system according to claim 1, characterized in that, The two-dimensional laser marking machine is a high-power two-dimensional laser marking machine. A nitrogen jet pipe is also provided next to the two-dimensional laser marking head, and the nitrogen jet pipe is directed to the injection gate cutting station above the laser cutting worktable.

8. The automotive spoiler production system according to claim 1, characterized in that, The detection head is a spherical detection head, and a planar detection surface is also provided on the detection column around the spherical detection head; the grinding control system has a built-in sandpaper wear self-inspection program module; the method for performing sandpaper wear self-inspection using the sandpaper wear self-inspection program module is as follows: (1) Detection path planning: Establish the equation of equidistant plane spiral in the self-inspection program module of grinding disc sandpaper wear, and generate the equidistant plane spiral detection path through the equation of equidistant plane spiral; (2) Setting the starting position of detection: The grinding control system drives the spoiler grinding robot arm to move, so that the end face of the grinding disc with sandpaper installed at the front end of the spoiler grinding robot arm is horizontally pressed against the spherical detection head, and the rotation center of the grinding disc is aligned vertically with the center of the spherical detection head, thereby forming the starting position of the grinding disc detection. (3) Wear self-inspection: The grinding control system calls the grinding disc sandpaper wear self-inspection program module to perform self-inspection of the grinding disc sandpaper wear. The grinding disc moves in an equidistant plane spiral along the detection path, so that the contact position between the grinding disc sandpaper and the spherical detection head on the grinding disc sandpaper plane gradually moves outward from the detection start position along the spiral trajectory. While the grinding disc moves along the spiral trajectory, the distance sensor located below the detection column synchronously detects the vertical position data and the changes in the vertical position data of the lower end face of the detection column. The changes in the vertical position data and the changes in the vertical position data of the lower end face of the detection column also synchronously reflect the changes in the vertical position data and the changes in the vertical position data of the spherical detection head. When the changes in the vertical position data and the changes in the vertical position data of the spherical detection head exceed the preset threshold, the grinding control system judges that the grinding disc sandpaper wear is out of tolerance, and thus issues an alarm prompt to notify the equipment maintenance personnel to replace the grinding disc.

9. A car spoiler production system according to claim 8, characterized in that, The self-inspection module for sandpaper wear of the grinding disc also includes a sub-module for detecting wear on the outer periphery of the sandpaper. The grinding control system further calls this sub-module to perform a self-inspection of the wear on the outer periphery of the sandpaper. The method for performing this self-inspection using the sub-module is as follows: The grinding control system drives the spoiler grinding robotic arm to tilt the sandpaper plane of the grinding disc at a certain angle relative to the horizontal direction. Then, the lowest point of the outer periphery of the sandpaper on the grinding disc is pressed against the planar detection surface located around the spherical detection head. The system then drives the pneumatic grinding machine spindle to rotate, thereby causing the grinding disc to rotate synchronously. While the grinding disc is rotating, a distance sensor located below the detection column simultaneously detects the vertical position data and changes in the vertical position data of the lower end face of the detection column. These changes in the vertical position data of the lower end face of the detection column also reflect the changes in the vertical position data of the planar detection surface. When the changes in the vertical position data of the planar detection surface exceed a preset threshold, the grinding control system determines that the wear of the outer periphery of the sandpaper on the grinding disc is out of tolerance, and issues an alarm to notify the equipment maintenance personnel to replace the grinding disc.

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