Cold-milling cutter integrated machine

Abstract

The application belongs to the technical field of automobile accessory processing, and particularly discloses a cold milling cutter integrated machine, which comprises a shell, a mechanical arm, a mounting end, a rotating seat, a cold cutter module, a milling cutter module, a tool detection module, a gas collecting cavity and a cleaning frame. The rotating seat is driven by a transmission motor to switch the cold cutter and the milling cutter. When switching, the cutter light rod extrudes the pushing rod of the cleaning frame, the bristles are displaced through the moving seat and the connecting spring, the working end passes through the rear bristles to reset the brush to remove the dust, the spring plunger cooperates with the poking rod and the poking head to make the cleaning frame shake twice, the impact rod impacts the elastic ring to make the lower part of the gas collecting cavity vibrate to prevent blockage, the external dust collector collects the dust through the suction hole and the dust suction hole, the tool detection module detects the cutter wear after cleaning, and the PLC automatically compensates or alarms. The machine integrates cold cutter weakening and milling cutter weakening, reduces the equipment cost and the floor area, improves the processing efficiency, the cutter cleaning effect and the weakening residual thickness consistency.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts processing technology, and specifically discloses an integrated cold milling cutter machine. Background Technology

[0002] A car dashboard typically consists of a frame, a foam layer, and a surface skin. For airbag dashboards, the key to successful manufacturing lies in controlling the precision of the skin and frame weakening. If the remaining thickness after weakening is too thick, the dashboard may not deploy smoothly when the airbag bursts, compromising the safety of front-seat occupants. Conversely, if the remaining thickness is too thin, visible scratches may appear on the dashboard surface, affecting its aesthetics and overall integrity.

[0003] Currently, relatively mature and cost-effective solutions include cold-blade surface weakening and milling cutter frame weakening. Cold-blade surface weakening is generally used for surface skins made of PVC, ABS, and other materials through slush molding. A semi-through cut is made on the inner surface using a cold blade, leaving a certain residual thickness so that the cutting marks are not visible on the outer surface of the skin. Milling cutter frame weakening is generally used for instrument panel frames made of PP and glass fiber injection molding. A semi-through cut is made on the inner surface using a milling cutter, also leaving a certain residual thickness to ensure that the cutting marks are not visible on the outer surface.

[0004] However, in existing technologies, skin weakening and skeleton weakening are typically processed by separate equipment. Operators need to place the skin or skeleton on a fixed fixture, and then a high-precision robotic arm performs the cutting. Because high-precision robotic arms and fixtures are expensive, separate equipment not only results in high procurement costs and a large footprint, but also requires two sets of robotic arms and two sets of fixtures, as the two processes often coexist. This leads to low equipment utilization and processing changeover efficiency, and also increases maintenance difficulty.

[0005] Furthermore, during the use of cold cutters or milling cutters, dust easily adheres to the tool surface, affecting subsequent cutting accuracy and tool life. Waste generated during milling also needs timely cleaning and collection; existing dust collection structures may become clogged due to dust accumulation over long-term use. If tool wear cannot be detected and compensated for in a timely manner, it will also affect the consistency of the weakened residual thickness. Therefore, how to integrate cold cutter skin weakening and milling cutter skeleton weakening into a single device to reduce equipment costs and floor space while improving processing efficiency, tool cleaning effect, and weakening machining accuracy has become a pressing technical problem to be solved in this field.

[0006] Furthermore, in existing cold cutter weakening and milling cutter weakening equipment, tool cleaning, dust collection and anti-clogging, and tool detection are usually independent processes. Tool cleaning often requires a separate cleaning station or manual cleaning during machine shutdown, and dust particles easily accumulate at the dust collection port and suction port, leading to a drop in negative pressure. If tool wear is not detected and compensated for in a timely manner, it will affect the consistency of the weakened residual thickness. Therefore, how to utilize the tool switching action itself to complete cleaning, and how to link cleaning, vibration, anti-clogging, dust collection, and detection compensation into a unified process, has become a pressing technical problem to be solved in this field. Summary of the Invention

[0007] In view of this, the technical problem to be solved by the present invention is that in the prior art, the weakening of the cold cutter skin and the weakening of the milling cutter skeleton are completed by separate equipment, which results in high equipment procurement costs, large floor space, low equipment utilization, and the failure to clean up tool dust in a timely manner, which affects the machining accuracy.

[0008] To achieve the above objectives, the present invention provides a cold milling cutter integrated machine, including a housing, a robotic arm installed in the middle of the inner cavity of the housing, a mounting end fixed to the working end of the robotic arm, a rotating seat rotatably mounted on the end of the mounting end away from the robotic arm, a driving structure for driving the rotating seat to rotate on the mounting end, the robotic arm being used to drive the position adjustment of the rotating seat, and a tool detection module being installed on the upper part of the mounting end;

[0009] An air collection chamber is fixed at the lower part of the mounting end. The discharge end of the air collection chamber is connected to an external vacuum cleaner. A cleaning frame is distributed below the air collection chamber. The cleaning frame has a U-shaped structure. A spring plunger is connected between the cleaning frame and the mounting end. Brush bristles are distributed on both sides of the inner wall of the cleaning frame. Push rods are distributed on both sides of the inner wall of the cleaning frame near the opening. The spring plunger drives the brush bristles and push rods to be distributed below the air collection chamber through the cleaning frame.

[0010] The inner wall of the cleaning rack has grooves on both sides. The push rod and the brush bristles are provided with a movable seat at the end near the groove. The movable seat drives the brush bristles and the push rod to move inside the groove. A connecting spring is fixed between two adjacent movable seats. The connecting spring supports the position of the push rod and the brush bristles through the movable seat.

[0011] In the above technical solution, the movable seat further includes a connecting seat, rollers, and elastic strips;

[0012] The connecting seat is fixed to the end of the push rod and brush bristles near the slide groove. The elastic strip is sleeved and fixed on the connecting seat. The roller rotates at the end of the connecting seat that is inserted into the slide groove, thereby reducing the friction between the moving seat and the slide groove.

[0013] In the above technical solution, a flexible part is fixed between two adjacent elastic strips. The flexible part is elastic. A flexible part is also fixed between the elastic strip and the inner wall of the end of the slide groove, so that the elastic strip cooperates with the flexible part to block the opening of the slide groove.

[0014] In the above technical solution, further, suction holes are provided at equal intervals on the bottom surface of the gas collection chamber and the opposite part of the cleaning rack. An elastic ring is embedded and fixed in the opening of the suction hole. The elastic ring is elastic. An impact rod is fixed on the cleaning rack near the elastic ring. The impact rod can impact the elastic ring on the suction hole, thereby preventing debris from clogging the suction hole.

[0015] In the above technical solution, a dust suction hole is further provided at the lower part of the inner wall of the air collection chamber, and the suction end of the dust suction hole faces the brush bristles. The dust suction hole is used to suction out the debris separated from the brush bristles.

[0016] In the above technical solution, further, both ends of the rotating seat are fixed with rotating rods, the rotating rods pass through the mounting end, a drive motor is fixed on the mounting end, and the output end of the drive motor is fixed to one of the rotating rods.

[0017] In the above technical solution, a cold knife module is installed on one side of the rotating base, and a milling cutter module is installed on the other side of the rotating base. The drive motor adjusts the position of the cold knife module and the milling cutter module through the rotating base.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This invention integrates cold-cutting and milling-cutting processes into a single device. A robotic arm, via a mounting end, rotating base, and drive motor, rotates and switches between the cold-cutting and milling-cutting modules. Combined with a first and second mounting fixture, this allows the surface skin and frame of an automotive dashboard to undergo cold-cutting and milling-cutting processes separately on the same device. Compared to existing separate devices, this eliminates the need for two sets of high-precision robotic arms and two sets of fixtures, thereby reducing equipment operating costs and floor space. Simultaneously, it enables rapid switching between the two processes, improving equipment utilization and processing efficiency.

[0020] 2. This invention utilizes the tool switching action itself to drive cleaning, eliminating the need for an additional cleaning station and a separate cleaning drive source. When the tool's smooth rod presses against the push rod, the moving seat moves within the groove and, through a connecting spring, causes the brush bristles to reposition. After the working end of the tool passes through the gap, the brush bristles quickly reset under the action of the connecting spring, the flexible part, and the elastic strip, brushing away the dust and causing it to be shaken and separated, thereby reducing the impact of dust on subsequent weakening processes.

[0021] 3. This invention achieves secondary vibration of the cleaning frame through a spring plunger, a lever, and a lever head, further separating the dust particles on the brush bristles. When the cleaning frame moves upward, the impact rod strikes the elastic ring, causing the elastic ring to vibrate and transmit the vibration to the lower part of the air collection chamber, preventing the suction and dust extraction holes from being blocked by dust particles. The air collection chamber forms a negative pressure under the action of an external vacuum cleaner, causing dust particles to enter the air collection chamber through the suction and dust extraction holes and be collected centrally. The external vacuum cleaner can be kept running continuously to extract dust particles generated during processing.

[0022] 4. This invention addresses the problem of untimely detection and compensation for tool wear, which affects the consistency of the weakened residual thickness. The tool detection module detects the milling cutter and cold cutter separately after the cleaning rack completes the brushing action, reducing the interference of dust on the detection results. When the deviation between the measured value and the initial value is less than a set threshold, the system automatically compensates for the deviation; when the deviation exceeds the set threshold, the system prompts maintenance personnel to replace or repair the tool, thereby reducing the impact of tool wear on the equipment process, ensuring the accuracy of the residual thickness of the skin and frame weakening, making airbag deployment reliable and preventing visible scratches on the outer surface of the instrument panel. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a diagram showing the connection structure between the rotating base and the mounting end in this invention;

[0025] Figure 3 This is a diagram showing the connection structure between the brush bristles, the push rod, and the cleaning frame in this invention.

[0026] Figure 4 This is a schematic diagram showing the distribution of the cold cutter module and the milling cutter module in this invention;

[0027] Figure 5 This is a diagram showing the connection structure between the elastic strip and the cleaning rack in this invention;

[0028] Figure 6 This is a schematic diagram showing the distribution of the chute and cleaning rack in this invention;

[0029] Figure 7 This is a diagram showing the connection structure between the flexible part and the elastic strip in this invention;

[0030] Figure 8 This is a diagram showing the connection structure between the spring and the roller in this invention;

[0031] Figure 9 for Figure 2 A magnified view of A in the middle.

[0032] In the diagram: 1. Housing; 11. First mounting fixture; 12. Second mounting fixture; 2. Robotic arm; 3. Mounting end; 31. Elastic ring; 32. Rotating rod; 33. Mounting seat; 34. Actuating rod; 35. Rotating seat; 36. Drive motor; 37. Cold knife module; 38. Dust suction hole; 39. Suction hole; 310. Milling cutter module; 311. Air collection chamber; 4. Cleaning rack; 41. Brush bristles; 42. Push rod; 43. Impact rod; 44. Spring plunger; 45. Actuating head; 46. Elastic strip; 47. Slide groove; 48. Flexible part; 49. Connecting seat; 410. Connecting spring; 411. Roller; 5. Tool detection module. Detailed Implementation

[0033] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0035] Example 1: Please refer to Figures 1-9 As shown, the present invention provides a technical solution:

[0036] This invention is a cold milling cutter integrated machine, including a housing 1, a robotic arm 2 installed in the middle of the inner cavity of the housing 1, a mounting end 3 fixed to the working end of the robotic arm 2, a rotating seat 35 rotatably mounted on the end of the mounting end 3 away from the robotic arm 2, and a drive structure for driving the rotating seat 35 to rotate on the mounting end 3.

[0037] The lower part of the mounting end 3 is fixed with an air collection chamber 311. A cleaning frame 4 is distributed below the air collection chamber 311. The cleaning frame 4 has a U-shaped structure. A spring plunger 44 is connected between the cleaning frame 4 and the mounting end 3. Brush bristles 41 are distributed on both sides of the inner wall of the cleaning frame 4. Push rods 42 are distributed on both sides of the inner wall of the cleaning frame 4 near the opening.

[0038] The inner wall of the cleaning rack 4 has grooves 47 on both sides. The push rod 42 and the brush bristles 41 are provided with a movable seat at one end near the groove 47. The movable seat drives the brush bristles 41 and the push rod 42 to move inside the groove 47. A connecting spring 410 is fixed between two adjacent movable seats.

[0039] The movable seat includes a connecting seat 49, a roller 411, and an elastic strip 46;

[0040] The connecting seat 49 is fixed to the end of the push rod 42 and the brush bristles 41 near the slide groove 47. The elastic strip 46 is sleeved and fixed on the connecting seat 49. The roller 411 rotates at the end of the connecting seat 49 that is inserted into the slide groove 47.

[0041] A flexible part 48 is fixed between two adjacent elastic strips 46. The flexible part 48 is elastic. A flexible part 48 is also fixed between the inner wall of the end of the elastic strip 46 and the groove 47.

[0042] Suction holes 39 are provided at equal intervals on the bottom surface of the air collection chamber 311 and the part opposite to the cleaning rack 4. An elastic ring 31 is embedded and fixed in the opening of the suction hole 39. The elastic ring 31 is elastic. An impact rod 43 is fixed on the cleaning rack 4 near the elastic ring 31.

[0043] A dust suction hole 38 is provided on the lower part of the inner wall of the air collection chamber 311. The suction end of the dust suction hole 38 faces the brush bristles 41, which are elastic.

[0044] Rotating rods 32 are fixed at both ends of the rotating base 35. The rotating rods 32 and the mounting end 3 pass through each other. A drive motor 36 is fixed on the mounting end 3. The output end of the drive motor 36 is fixed to one of the rotating rods 32.

[0045] A cold knife module 37 is mounted on one side of the rotating base 35, and a milling cutter module 310 is mounted on the other side of the rotating base 35. The cold knife module 37 and the milling cutter module 310 are arranged opposite to each other.

[0046] A mounting base 33 is fixed on the rotating rod 32 on the side of the rotating seat 35 away from the drive motor 36. A toggle rod 34 is fixed on the mounting base 33. A toggle head 45 is fixed on the top surface of the cleaning rack 4 near the toggle rod 34.

[0047] In actual use, the operator can connect the control end of the robotic arm 2 to an external PLC controller. At the same time, the external PLC controller has a control program installed inside, so that the PLC controller can control the robotic arm 2 to drive the milling cutter module 310 or the cold knife module 37 to work, thereby completing the processing of the car dashboard frame or the surface skin of the car dashboard.

[0048] After the milling cutter module 310 is used, the external PLC controller can control the drive motor 36 to work. At this time, the output shaft of the drive motor 36 can drive the milling cutter module 310 to rotate 180 degrees through the rotating seat 35. At this time, the positions of the milling cutter module 310 and the cold knife module 37 are switched, thereby realizing the use of the robotic arm 2 to drive the cold knife module 37.

[0049] It should be noted that the milling cutter module 310 shown in this document includes a milling cutter and a milling cutter driver that drives the milling cutter to work, and the cold cutter module 37 includes a cold cutter and a cold cutter driver that drives the cold cutter to work. The parts of the cold cutter and the milling cutter that are away from the working end are both smooth rods. The diameter of the smooth rod is larger than the diameter of the working end. This is designed to facilitate the installation of the cold cutter or the milling cutter on the driver.

[0050] When the output shaft of the drive motor 36 drives the rotating seat 35 to rotate, the smooth part of the milling cutter or cold cutter can pre-press the push rod 42. At this time, the push rod 42 can drive the roller 411 to slide inside the slide groove 47 through the connecting seat 49. At the same time, the connecting seat 49 on the push rod 42 can push the connecting seat 49 on the brush bristles 41 through the connecting spring 410. As the smooth part of the cold cutter or milling cutter continues to press the push rod 42, the distance between multiple connecting seats 49 will decrease, which in turn will decrease the distance between multiple brush bristles 41. Since a gap is formed between the push rods 42 on both sides and between the brush bristles 41 on both sides for the working end of the tool to pass through, the working end of the cold cutter or milling cutter can pass through the gap during the movement of the brush bristles 41.

[0051] When the working end of the cold cutter or milling cutter passes through the gap, under the action of the connecting spring 410, the flexible part 48 and the elastic strip 46, the push rod 42 and the brush bristles 41 can quickly return to their previous positions. This allows the brush bristles 41 to remove dust from the working end of the cold cutter or milling cutter, thus facilitating the continued use of the cold cutter or milling cutter.

[0052] When the push rod 42 and the brush bristles 41 return to their previous positions, the dust on the brush bristles 41 can be shaken. Then the PLC controller starts the external vacuum cleaner. At this time, the inside of the air collection chamber 311 is under negative pressure. The dust separated by the shaking can pass through the suction hole 39 and the dust suction hole 38 and enter the inside of the air collection chamber 311. Then the external vacuum cleaner collects the dust through the air collection chamber 311.

[0053] When the rotating seat 35 drives the cold knife or milling cutter to rotate, the cold knife or milling cutter can drive the cleaning frame 4 to move upward through the push rod 42, thereby causing the cleaning frame 4 to press against the working end of the spring plunger 44. When the cold knife or milling cutter passes through the gap between the two brush bristles 41, the spring plunger 44 can drive the cleaning frame 4 to reset, thereby enabling the cleaning frame 4 to drive the brush bristles 41 to achieve the first up and down shaking.

[0054] When the output shaft of the drive motor 36 continues to drive the rotating seat 35 to rotate, the toggle lever 34 can push the toggle head 45. At this time, the toggle head 45 drives the cleaning frame 4 to move down, and at the same time, the spring plunger 44 stores power. When the toggle lever 34 separates from the toggle head 45, the repulsive force generated by the spring plunger 44 can drive the cleaning frame 4 to move up, thereby realizing the cleaning frame 4 driving the brush bristles 41 to achieve a second jolt, realizing the second separation of powder on the brush bristles 41.

[0055] When the cleaning rack 4 moves upward, the impact rod 43 can impact the elastic ring 31. Since the elastic ring 31 is elastic, the vibration generated by the elastic ring 31 can be transmitted to the lower part of the air collection chamber 311, thereby preventing the suction hole 39 and the dust suction hole 38 from being blocked by dust, and ensuring that the air collection chamber 311 can quickly suck up the dust generated by the processing of the car dashboard frame or the car dashboard surface skin.

[0056] In actual use, the PLC controller will keep the external vacuum cleaner in a constantly open state, which will enable the external vacuum cleaner to continuously suck up the dust generated during processing.

[0057] The upper mounting tool detection module 5 of the mounting end 3 can detect the usage status of the cold cutter and the milling cutter when switching between them, so that the staff can perform timely maintenance on the cold cutter and the milling cutter.

[0058] Example 2: Please refer to Figures 1-9 As shown, based on Example 1:

[0059] A first mounting fixture 11 is fixed to the bottom wall of the inner cavity of the housing 1 on one side of the robotic arm 2, and a second mounting fixture 12 is fixed to the bottom wall of the inner cavity of the housing 1 on the other side of the robotic arm 2. The first mounting fixture 11 and the second mounting fixture 12 are distributed opposite to each other.

[0060] In actual use, the operator can place the car dashboard frame on the first mounting fixture 11 and the car dashboard surface skin on the second mounting fixture 12. During normal operation, the robotic arm 2 drives the cold knife module 37 to pre-process the car dashboard surface skin. After the car dashboard surface skin is processed, the PLC controller will control the robotic arm 2 to drive the milling cutter module 310 to process the car dashboard frame. This allows for rapid switching between the car dashboard frame and the car dashboard surface skin during processing, thereby improving the processing efficiency of the car dashboard surface skin and the car dashboard frame and avoiding the need for two robotic arms 2 during the processing of the car dashboard frame and the car dashboard surface skin.

[0061] Based on the above embodiments, the tool detection module 5 on the upper part of the mounting end 3 can be connected to the robotic arm 2, the drive motor 36, and the external PLC controller. The tool detection module 5 is used to detect the working end of the cold cutter or milling cutter during the switching process between the cold cutter module 37 and the milling cutter module 310. The detection content may include whether the tool contour is complete, whether the cutting edge is damaged, whether dust adheres to the working end, whether the tool has abnormal wear, and whether the tool is properly installed. The tool detection module 5 can employ one or more methods such as visual inspection, non-contact ranging, and contact detection; the specific detection method can be selected according to the tool type and processing requirements.

[0062] When the rotating base 35 drives the cold knife module 37 or the milling cutter module 310 to the detection position, the tool detection module 5 can first detect the tool and then send the detection results to the external PLC controller. If the detection results show that the tool status deviates slightly from the initial reference status, the external PLC controller can automatically compensate for the deviation in the subsequent machining trajectory, so that the tool can still complete the machining according to the predetermined weakened path; if the detection results show that the deviation is too large, or the tool has chipped edges, severe wear, loose installation, etc., the external PLC controller can issue a prompt signal to remind maintenance personnel to replace or repair the tool. Since the detection action can be coordinated with the tool switching action and cleaning action, it is not necessary to set up separate detection stations for cold knives and milling cutters, which helps to reduce the equipment footprint and procurement costs.

[0063] Furthermore, the tool inspection module 5 can perform inspections after the cleaning rack 4 has completed the brushing action. This reduces the interference of dust on the inspection results, making the results more reflective of the true condition of the tool. The tool inspection module 5 can also record the inspection results of cold cutters and milling cutters separately, forming a tool usage status record, which facilitates maintenance personnel in judging tool life and replacement cycles. This setting, combined with the integrated structure of the cold milling cutter integrated machine, allows cold cutter weakening and milling cutter weakening to not only share the robotic arm 2 and fixture, but also share the detection and compensation logic, thereby improving the consistency of the weakened residual thickness, ensuring reliable airbag deployment, and reducing the risk of visible scratches on the outer surface of the dashboard.

[0064] The cleaning frame 4 has a U-shaped structure with bristles 41 distributed on both sides of its inner wall. A push rod 42 is located near the opening, with a gap between the push rod 42 and the bristles 41. A spring plunger 44 connects the cleaning frame 4 and the mounting end 3, allowing the cleaning frame 4 to move under force and return to its original position after the force is removed. Slide grooves 47 are formed on both sides of the inner wall of the cleaning frame 4. A movable seat is provided at the end of the push rod 42 and the bristles 41 near the slide groove 47, allowing the push rod 42 and the bristles 41 to move within the slide groove 47. A spring 410 is fixedly connected between adjacent movable seats, supporting the position of the push rod 42 and the bristles 41 through the movable seats. The movable seat may include a connecting seat 49, a roller 411, and an elastic strip 46. The connecting seat 49 is fixed to the end of the push rod 42 and the bristles 41 near the slide groove 47. The elastic strip 46 is sleeved and fixed on the connecting seat 49. The roller 411 rotates at the end of the connecting seat 49 that is inserted into the slide groove 47, thereby reducing the friction between the movable seat and the slide groove 47. A flexible part 48 may also be fixed between adjacent elastic strips 46 and between the elastic strip 46 and the inner wall of the end of the slide groove 47. The flexible part 48 is elastic and can block the opening of the slide groove 47 to reduce the amount of powder entering the interior of the slide groove 47.

[0065] When the cold cutter or milling cutter switches with the rotating seat 35, the polished part of the cutter first contacts the push rod 42 and squeezes it. The push rod 42 drives the roller 411 to move in the slide groove 47 through the connecting seat 49, and at the same time, it pushes the connecting seat 49 on one side of the bristles 41 through the connecting spring 410, reducing the distance between the multiple moving seats, and thus reducing the distance between the multiple bristles 41. Since a gap is formed between the push rods 42 on both sides and between the bristles 41 on both sides, the working end of the cutter can pass through this gap. After the working end of the cutter passes through, under the action of the connecting spring 410, the flexible part 48 and the elastic strip 46, the push rod 42 and the bristles 41 quickly return to their previous positions, and the bristles 41 brush the surface of the working end of the cutter, removing the attached dust. This process does not require an additional cleaning station or manual cleaning by the operator, but completes the cleaning by the cutter switching action itself.

[0066] Based on this, the cleaning frame 4 can also cooperate with the spring plunger 44, the actuating rod 34, and the actuating head 45 to achieve multiple vibrations. When the rotating seat 35 drives the blade to rotate, the blade can drive the cleaning frame 4 to move upward through the push rod 42, causing the cleaning frame 4 to press against the working end of the spring plunger 44; after the blade passes through the bristles 41, the spring plunger 44 drives the cleaning frame 4 to reset, causing the cleaning frame 4 to drive the bristles 41 to produce the first up-and-down vibration. When the drive motor 36 continues to drive the rotating seat 35 to rotate, the actuating rod 34 can push the actuating head 45, causing the actuating head 45 to drive the cleaning frame 4 to move downward, while the spring plunger 44 stores force; when the actuating rod 34 separates from the actuating head 45, the repulsive force generated by the spring plunger 44 drives the cleaning frame 4 to move upward, causing the cleaning frame 4 to drive the bristles 41 to produce a second vibration. Through multiple vibrations, the powder on the bristles 41 can be further separated, reducing the possibility of powder adhering to the blade again.

[0067] A suction hole 39 can be opened on the bottom surface of the air collection chamber 311 opposite to the cleaning frame 4. A fixed elastic ring 31 is embedded in the opening of the suction hole 39. The elastic ring 31 is elastic. An impact rod 43 is fixed on the cleaning frame 4 near the elastic ring 31. When the cleaning frame 4 moves upward, the impact rod 43 can impact the elastic ring 31, causing the elastic ring 31 to vibrate and transmit the vibration to the lower part of the air collection chamber 311, loosening the dust near the suction hole 39 and the dust suction hole 38, and preventing the suction hole 39 and the dust suction hole 38 from being blocked by dust. A dust suction hole 38 can be opened on the lower part of the inner wall of the air collection chamber 311. The suction end of the dust suction hole 38 faces the bristles 41 and is used to suck up the debris separated by the bristles 41. An external vacuum cleaner is connected to the discharge end of the air collection chamber 311, which can create a negative pressure inside the air collection chamber 311. Dust enters the air collection chamber 311 through the suction hole 39 and the dust suction hole 38 and is collected. The external vacuum cleaner can remain constantly on to continuously extract dust and debris generated during processing. This design combines tool cleaning, dust agitation, vibration-based clogging prevention, and negative pressure collection, improving tool cleaning efficiency while reducing the risk of clogging in the suction system.

[0068] In practical use, the external controller can be connected to the robotic arm 2, the drive motor 36, the tool detection module 5, and an external vacuum cleaner. The external PLC controller can be programmed to move the robotic arm 2, which in turn moves the mounting end 3 and the rotating seat 35, and selects either the cold cutter module 37 or the milling cutter module 310 according to the processing requirements. The first mounting fixture 11 and the second mounting fixture 12 are positioned opposite each other and can be used to place the automotive dashboard frame and the automotive dashboard surface skin, respectively. During processing, the robotic arm 2 can first drive the cold cutter module 37 to weaken the surface skin, and then the drive motor 36 drives the rotating seat 35 to rotate, switching the milling cutter module 310 to the working position to weaken the frame; alternatively, milling cutter weakening can be performed first, followed by cold cutter weakening, according to the process sequence. Since the two processes share the same robotic arm and the same mounting end, there is no need to configure separate robotic arms and fixtures for the cold cutter and milling cutter, which helps improve equipment utilization and processing switching efficiency.

[0069] During tool switching, the external controller controls the robotic arm 2 to first move the tool to the vicinity of the cleaning rack 4, and then controls the drive motor 36 to drive the rotating seat 35 to rotate. When the rotating seat 35 rotates, the tool's smooth rod part presses against the push rod 42, causing the bristles 41 to move aside, and the working end of the tool passes between the bristles 41. Subsequently, the bristles 41 reset and brush away dust. The cleaning rack 4 vibrates multiple times under the action of the spring plunger 44, the actuating rod 34, and the actuating head 45. The impact rod 43 impacts the elastic ring 31, and the external vacuum cleaner continuously sucks in the dust, thus completing the cleaning and dust collection. The tool detection module 5 performs detection after the cleaning rack 4 completes the brushing action to reduce the interference of dust on the detection results. The tool detection module 5 can record the detection results of the cold cutter and the milling cutter separately to form a tool usage status record, which is convenient for maintenance personnel to judge the tool life and replacement cycle. This setup, combined with the integrated structure of the cold milling cutter machine, allows the cold cutter weakening and milling cutter weakening to not only share the robotic arm 2 and fixture, but also to share the detection and compensation logic. This improves the consistency of the weakened residual thickness, ensures reliable airbag deployment, and reduces the risk of visible scratches on the outer surface of the dashboard.

[0070] To enhance safety, the external PLC controller can be configured with safety interlock logic. When equipment malfunctions or abnormal signals occur in the movement area of ​​robotic arm 2, the external PLC controller can restrict the movement of robotic arm 2 or stop the equipment, displaying a warning message on the human-machine interface. The external vacuum cleaner can remain constantly on or be intermittently controlled by the external PLC controller according to the processing rhythm. This control method not only gives the cold milling cutter integrated machine the advantages of mechanical integration but also provides synergistic advantages in detection, compensation, cleaning, dust collection, and safety interlocking, reducing the risk of misoperation and improving equipment operational stability.

[0071] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A cold milling cutter integrated machine, characterized in that, Includes a housing (1), a robotic arm (2) is installed in the middle of the inner cavity of the housing (1), a mounting end (3) is fixed at the working end of the robotic arm (2), a rotating seat (35) is rotatably mounted on the end of the mounting end (3) away from the robotic arm (2), a tool detection module (5) is installed on the upper part of the mounting end (3), and a drive structure for driving the rotating seat (35) to rotate is provided on the mounting end (3); The lower part of the mounting end (3) is fixed with an air collection chamber (311), and a cleaning frame (4) is distributed below the air collection chamber (311). The cleaning frame (4) has a U-shaped structure. A spring plunger (44) is connected between the cleaning frame (4) and the mounting end (3). Brush bristles (41) are distributed on both sides of the inner wall of the cleaning frame (4). Push rods (42) are distributed on both sides of the inner wall of the cleaning frame (4) near the opening. A gap is formed between the push rods (42) on both sides and between the brush bristles (41) on both sides for the working end of the tool to pass through. The cleaning rack (4) has grooves (47) on both sides of its inner wall. The push rod (42) and the brush bristles (41) are provided with a movable seat at one end near the groove (47). The movable seat drives the brush bristles (41) and the push rod (42) to move inside the groove (47). A connecting spring (410) is fixed between two adjacent movable seats.

2. The integrated cold milling cutter machine according to claim 1, characterized in that, The movable seat includes a connecting seat (49), a roller (411), and an elastic strip (46). The connecting seat (49) is fixed to the end of the push rod (42) and the brush bristles (41) near the slide groove (47), the elastic strip (46) is sleeved and fixed on the connecting seat (49), and the roller (411) rotates at the end of the connecting seat (49) inserted into the slide groove (47).

3. The integrated cold milling cutter machine according to claim 2, characterized in that, A flexible part (48) is fixed between two adjacent elastic strips (46), the flexible part (48) is elastic, and a flexible part (48) is also fixed between the elastic strip (46) and the inner wall of the end of the groove (47).

4. The integrated cold milling cutter machine according to claim 1, characterized in that, Suction holes (39) are provided at equal intervals on the bottom surface of the gas collection chamber (311) and the opposite part of the cleaning rack (4). An elastic ring (31) is embedded and fixed in the opening of the suction hole (39). The elastic ring (31) is elastic. An impact rod (43) is fixed on the cleaning rack (4) near the elastic ring (31).

5. The integrated cold milling cutter machine according to claim 1, characterized in that, The lower part of the inner wall of the air collection chamber (311) is provided with a dust suction hole (38), the suction end of the dust suction hole (38) is facing the bristles (41), and the bristles (41) are elastic.

6. The integrated cold milling cutter machine according to claim 1, characterized in that, Rotating rods (32) are fixed at both ends of the rotating seat (35). The rotating rods (32) and the mounting end (3) pass through each other. A drive motor (36) is fixed on the mounting end (3). The output end of the drive motor (36) is fixed to one of the rotating rods (32).

7. The integrated cold milling cutter machine according to claim 6, characterized in that, A cold knife module (37) is installed on one side of the rotating base (35), and a milling cutter module (310) is installed on the other side of the rotating base (35). The cold knife module (37) and the milling cutter module (310) are arranged opposite to each other.

8. The integrated cold milling cutter machine according to claim 6, characterized in that, A mounting base (33) is fixed on the rotating rod (32) on the side of the rotating seat (35) away from the drive motor (36). A toggle rod (34) is fixed on the mounting base (33). A toggle head (45) is fixed on the top surface of the cleaning rack (4) near the toggle rod (34).

9. The integrated cold milling cutter machine according to claim 1, characterized in that, The bottom wall of the inner cavity of the housing (1) is fixed with a first mounting fixture (11) on one side of the robotic arm (2), and the bottom wall of the inner cavity of the housing (1) is fixed with a second mounting fixture (12) on the other side of the robotic arm (2). The first mounting fixture (11) and the second mounting fixture (12) are distributed opposite to each other.

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