Automobile rubber and plastic product drilling machining equipment and machining method thereof

Abstract

The invention discloses automobile rubber and plastic product drilling machining equipment and a machining method thereof, and belongs to the technical field of laser cutting machining equipment.The automobile rubber and plastic product drilling machining equipment comprises a rack, a bearing frame, a driving module and a laser device, raw materials are arranged at the top of the bearing frame and drive the raw materials to ascend and descend, and the laser device is arranged on the top of the bearing frame; the driving module drives the laser to move horizontally in the horizontal direction, and the laser can generate vertically-downward laser beams. Through the arrangement of the laser device and the angle adjusting frame, the laser device can vertically machine a vertical through hole, the laser device is inclined through the angle adjusting frame, the end strip between the contact head and a raw material extrudes the upper surface of the raw material, the end strip extrudes the raw material to make the edge of the through hole slightly concave downwards, and the extension line of the end strip extruding the raw material intersects with the axis of the through hole; translation and rotation of the laser device can ensure that the raw materials are at a stable angle, and efficient chamfering machining is completed.

Description

Technical Field

[0001] The invention belongs to the technical field of laser cutting processing equipment, and in particular relates to a drilling processing equipment for automobile rubber and plastic products and a processing method thereof. Background Art

[0002] Automotive rubber and plastic products are a category of automotive components, such as sound insulation gaskets (sheet rubber parts used to reduce noise inside the vehicle, usually installed on the inside of the body panel), sealing gaskets (used to seal body seams or cover screws and fixing points), dashboard gaskets (used to fix the dashboard or interior parts), etc.

[0003] In actual production, these rubber and plastic products need to be punched and cut from the whole piece of raw material so that they can be installed on the body sheet metal through fasteners. During the punching and cutting, if a laser cutting machine is used for punching and cutting, the through-hole position of the obtained gasket blank is a cylindrical hole, and the gaskets in some positions need to be countersunk with fasteners such as bolts and rivets, that is, the head of the fastener needs to enter the opening to make the gasket surface flat. If the preload force is directly increased to deform the gasket to complete the countersunk fixation, the gasket opening position will be over-pressed and easy to crack during long-term use. For chamfering these through holes, the existing chamfering process needs to input the blank into the chamfering equipment again for chamfering processing. The conversion station and secondary positioning process of the raw material will slow down the processing efficiency. In view of this, a drilling processing equipment and a processing method for automotive rubber and plastic products are provided. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a drilling processing device and a processing method for automotive rubber and plastic products.

[0005] The technical solution adopted to solve the above technical problems is:

[0006] A drilling processing device for automotive rubber and plastic products, comprising a frame, a carrier, a driving module and a laser, wherein a raw material is arranged on the top of the carrier and drives the raw material to move up and down, the driving module drives the laser to translate in the horizontal direction, and the laser can generate a vertically downward laser beam;

[0007] The laser comprises a laser generator, a sleeve is installed at the light outlet of the laser generator, an inner tube 1 and an inner tube 2 are coaxially sleeved in the sleeve, the inner tube 2 is for laser to pass through and gas to continuously enter, a contact head is installed at a lower end of the inner tube, and an end strip is movably installed at an opening position at the bottom end of the contact head;

[0008] It also includes an angle adjustment frame installed between the driving module and the laser. The driving module drives the laser to translate through the angle adjustment frame, and the angle adjustment frame drives the laser to swing from a vertical state to a top backward tilted state.

[0009] When processing automotive rubber and plastic gaskets, in order to process rubber and plastic gasket blanks with through holes on the raw materials, the laser will be vertical, and then the laser will be translated under the drive module to process round holes or waist-shaped holes that penetrate the main body. At this time, the laser will generate a continuous downward airflow on the inner tube 2 because it is provided with continuous air intake, so that the through-hole position is quickly cooled and the waste material of the hole is blown downward out of the through-hole, realizing instant waste discharge and taking out the heat inside the inner tube 2, ensuring that the temperature of the laser can be controlled for a long time. In order to facilitate the installation of fasteners such as rivets and bolts in the countersunk holes, the laser is continuously tilted. Cut the upper edge of the through hole and chamfer the upper edge of the through hole to obtain chamfered waste. During the processing, the laser contacts the raw material and squeezes the raw material downward through the swing of the end bar, so that the raw material is at a stable angle when chamfered. The extrusion of the end bar can also reduce the tilt angle of the laser to ensure that the position of the laser is relatively stable. Finally, when the laser goes up and returns to the vertical state, the end bar extends downward to reduce the inner diameter of the opening at the bottom of the contact head, and the airflow blowing to the through hole can be accelerated by reducing the diameter to prevent the opening waste or chamfered waste from adhering to the inner wall of the through hole or the chamfered position, thereby ensuring the neatness of the through hole position.

[0010] Furthermore, an air inlet pipe is installed through the side wall of the sleeve, an air supply channel is formed between the inner wall of the sleeve and the outer wall of the inner tube, and air holes are provided on the two circumferential side walls of the inner tube.

[0011] Through the above technical scheme, a specific configuration is provided for the downward exhaust of the laser. The air inlet pipe inputs the purified air or inert gas from the outside into the sleeve. The gas goes up along the outer wall of the inner tube one, passes over the top of the inner tube one, enters the inner tube two, and finally goes down along the inner tube two and is ejected from the bottom. During the process, part of the gas in the inner tube two will absorb heat and expand. This part of the gas will enter the interlayer between the inner tube one and the inner tube two through the air hole, transfer part of the heat to the inner tube one, and supplement the heat dissipation through the larger contact area between the inner tube one and the airflow, thereby achieving efficient cooling.

[0012] Furthermore, a top ring is installed on the top of the inner tube 2, and a bottom ring is provided at the bottom opening position of the inner tube 1. The top ring and the bottom ring are screwed to the inner wall of the inner tube 1 through threads. An air intake pipe is installed through the side wall of the contact head. The inner wall of the contact head and the outer wall of the inner tube 2 are arranged to form an air intake channel, and a side opening is opened on the side wall of the contact head.

[0013] Through the above technical scheme, in order to ensure the cleanliness of the cutting position, air is sucked through the suction pipe while the air is blown out, and a negative pressure space is generated at the position of the suction channel to attract and concentrate the raw material particles carried by the upward airflow. The side openings are facing all around to increase the suction coverage range and collect the smoke generated below in real time to prevent it from falling on the upper surface of the raw material and solidifying, resulting in an uneven upper surface of the finished product.

[0014] Furthermore, a mounting groove is provided at the bottom end of the contact head, a straight slot hole is provided in the middle of the end strip, a rectangular block is slidably installed in the straight slot hole, an adapter frame is installed between the rectangular blocks, the rectangular block is rotatably installed in the mounting groove by means of a column head, a counterweight head is provided at the lower end of the end strip, an elastic part is installed between the top end of the end strip and the contact head, and a spring sheet is installed between the adapter frame and the contact head.

[0015] Through the above technical scheme, a specific configuration is provided to realize the rotation and sliding of the end strip, the straight slot hole in the middle of the end strip has a horizontal inner wall, the rectangular block can make the end strip slide up and down relative to the contact head, the elastic member can be deformed, and the end strip is kept at the lower dead point position of the downward extension, and is only squeezed upward when it contacts the raw material. At the same time, because the rectangular block is rotatably installed with the contact head through the column head, the upper half of the end strip can swing downward when under pressure to reduce the angle with the raw material, and the end strip squeezes the raw material at a smaller angle with the horizontal plane to make the edge of the through hole slightly concave. When the upper part of the laser is slightly tilted downward, the inclination of the raw material plus the inclination of the laser can perform chamfering at a larger angle. During the rotation of the laser, the driving module will drive the laser to draw a circle around the axis of the through hole to ensure that the extension line of the end strip that squeezes the raw material intersects with the axis of the through hole, that is, it always passes through the center of the through hole. This fixed angle of continuous pressure on the raw material can keep the chamfered position of the raw material at a consistent angle, thereby ensuring the quality of the chamfering process.

[0016] Furthermore, the contact head is in a vertical state to open a through hole in the main body of the raw material. When the contact head is tilted, it can cut chamfered waste at the top edge of the through hole. When the contact head is tilted, the end strip that does not contact the raw material pushes the opening waste out of the through hole.

[0017] Through the above technical scheme, when the hole opening process is carried out, the contact head is vertical and does not contact with the raw material, which can ensure that the end strip hangs vertically, and the function of converging the air outlet is completed at this time. During the chamfering process, the inclination of the contact head is matched with the inclination of the raw material, and chamfered waste with a triangular cross-section can be cut on the upper edge of the through hole to facilitate the countersink installation of fasteners such as bolts. At this time, only the end strip between the contact head and the raw material is in a shortened state, and the end strip located above the contact head is in an extended state and inserted into the through hole from top to bottom. Before chamfering, the hole opening waste can be pushed downward out of the through hole, so that the gradually generated chamfered waste can fall down smoothly, avoiding the waste remaining at the hole opening position and causing subsequent adhesion and other problems.

[0018] Furthermore, a thread groove is provided at the lower part of the circumferential outer wall of the sleeve, and a notch is designed at the position where the thread groove is opened. A locking sleeve is screwed on the lower part of the sleeve through the thread groove, and the locking sleeve can be screwed up to squeeze the lower part of the sleeve and the inner tube together.

[0019] Through the above technical solution, because there is a focal length problem in laser cutting, the distance between the vertically suspended laser and the raw material is greater than the distance between the laser that is inclined to contact the raw material and the raw material, so when chamfering, the laser needs to be lengthened to ensure that the distance between the laser and the raw material is reasonable during chamfering. During adjustment, the locking sleeve can be rotated downward along the threaded groove at the lower part of the sleeve. At this time, the inner edge of the locking sleeve is out of contact with the lower edge of the sleeve, so that the inner tube 1 can be pulled downward. After the adjustment is completed, the locking sleeve is rotated upward, and the inner edge of the locking sleeve is in contact with the lower edge of the sleeve. Because the inner edge of the locking sleeve adopts a tapered hole that is thick at the top and thin at the bottom, when the locking sleeve is rotated upward, the lower part of the sleeve will be squeezed toward the inner tube 1. The notch ensures that the lower part of the sleeve can be squeezed and slightly deformed, so that the lower part of the sleeve and the inner tube 1 are squeezed tightly against each other to complete the fixation after adjustment.

[0020] Furthermore, the angle adjustment frame includes a connecting seat, a rotator and an oscillator. The connecting seat and the rotator are connected through a middle frame. The oscillator is fixedly installed on the top of the middle frame. The laser oscillates under the drive of the oscillator. The rotator can drive the laser to rotate under the limit of the middle frame.

[0021] Through the above technical scheme, a specific configuration of an angle adjustment frame is disclosed, wherein a slider is provided at the lower part of the connecting seat, which can slide horizontally left and right under the guidance and drive of the driving module, thereby driving the rotator to slide left and right, and the rotator can drive the oscillator and the laser to rotate synchronously, and cooperate with the driving module to drive the laser to draw a circle around the axis of the through hole, ensuring that the extension line of the end strip of the extruded raw material intersects with the axis of the through hole, and the oscillator can drive the laser to tilt, so as to perform chamfering processing on the raw material.

[0022] Furthermore, an avoidance opening is provided in the middle of the middle frame, and the laser swings freely in the avoidance opening. A gear ring is provided at the end of the middle frame. The middle frame and the connecting seat are connected by a rotator. A servo motor meshing with the gear ring is installed on the middle frame above the connecting seat.

[0023] Through the above technical solution, in order to realize the rotation drive of the laser, a specific configuration is disclosed, in which the servo motor drives the middle frame to rotate through the meshing transmission with the gear ring, and the middle frame is horizontally arranged in the middle of the middle frame. When rotating, the rotation center line of the middle frame is ensured to coincide with the axis of the through hole, so that the laser can be driven to rotate. The setting of the avoidance port can avoid affecting the swing of the laser.

[0024] Furthermore, the oscillator is provided with a limit opening, a sliding member is installed in the limit opening, the laser is fixedly installed in the sliding member, a tooth groove is opened on the outer wall of the oscillator, and a corresponding stepping motor is provided at the position of the tooth groove of the sliding member.

[0025] Through the above technical scheme, in order to realize the laser swing drive, a specific configuration is disclosed, the oscillator is an arc cut out from a right circular ring, the center of the oscillator is located at a distance from the lower end of the laser, and coincides with the focus of the laser. In this way, when the laser swings, it rotates around the focus of the laser, which can facilitate focusing. The sliding part is slidably installed in the limit opening, the sliding part slides under the guidance of the oscillator, and the stepping motor engages with the tooth groove through the gear, so that the swing drive can be completed.

[0026] Furthermore, the support frame includes a cover shell with an opening facing upward, support plates arranged side by side are installed on the upper part of the cover shell, a negative pressure device is connected to the lower part of the cover shell, a connecting pipe is provided between the cover shell and the negative pressure device, a waste container is provided at the lowest point of the cover shell, and a lifting assembly is installed between the cover shell and the frame.

[0027] Through the above technical scheme, a specific bearing frame structure is disclosed, the cover shell opening is upward, the opening is rectangular, and it is convenient to carry rectangular raw materials, a support plate is installed in the opening, the support plate suspends the raw materials, and in order to avoid the pressure depression of the raw materials affected by the support plate, the support plate can slide left and right, and while suspending the raw materials, avoid the position directly below the opening, the negative pressure equipment puts the cover shell in a negative pressure state, and cooperates with the friction force of the support plate to prevent the raw materials from being dragged and slipped when chamfering, a mesh plate is provided at the connecting position between the connecting pipe and the cover shell to prevent waste from entering the negative pressure equipment, so that the waste is accumulated in the waste containing tank, and a movable door is provided at the bottom of the waste containing tank, which can be opened for waste discharge operation, and the lifting assembly can drive the cover shell to move up and down, so as to leave sufficient space for adjusting the length and angle of the laser and loading and unloading raw materials.

[0028] A method for drilling holes in automotive rubber and plastic products, comprising the following steps:

[0029] S1. Place the raw material on the top of the carrier, and the driving module drives the laser to move horizontally, and a vertical through hole is processed on the raw material by the laser beam;

[0030] S2, when the laser does not contact the raw material, the end bar extends downward to reduce the inner diameter of the bottom opening of the contact head, and the gas continues to enter the inner tube and is ejected from the bottom, generating an airflow blowing toward the raw material;

[0031] S3. The angle adjustment frame drives the laser to swing from a vertical state to a top backward tilted state, and the support frame drives the raw material upward to contact the laser in an inclined state. The end strip located below the contact head squeezes the raw material downward, and the laser rotates around the through hole axis to chamfer the upper edge of the through hole through the laser beam.

[0032] The beneficial effects of the present invention are as follows:

[0033] (1) The present invention uses a laser and an angle adjustment frame to allow the laser to be vertically positioned to process a vertical through hole. The laser is tilted by the angle adjustment frame, and the end strip between the contact head and the raw material squeezes the upper surface of the raw material. The end strip squeezes the raw material to make the edge of the through hole slightly concave. The extension line of the end strip that squeezes the raw material intersects with the axis of the through hole. The laser can be translated and rotated to ensure that the raw material is at a stable angle, thereby completing efficient chamfering processing.

[0034] (2) The present invention optimizes the laser, continuously inlets air into the laser, and the temperature of the laser can be controlled when it works for a long time, thereby generating downward airflow to cool the through hole. The end strip reduces the inner diameter of the opening at the bottom of the contact head to concentrate the airflow. When chamfering, the end strip located above the contact head is inserted into the through hole, and cooperates with the downward airflow to push the waste material of the opening downward out of the through hole. The airflow is continuous, so that the chamfered waste material generated subsequently can fall down smoothly.

[0035] (3) The present invention optimizes the support frame, and the support plate suspends the raw material and avoids it directly below the punching hole, so that the through hole of the raw material can be squeezed and deformed by the end bar. The negative pressure device puts the cover shell in a negative pressure state, sucking the raw material downward, and cooperating with the friction force of the support plate to prevent the raw material from being dragged and slipped during chamfering, sucking the waste downward and collecting it, realizing efficient waste discharge and concentration. The lifting assembly drives the cover shell to move up and down, leaving sufficient space for loading and unloading raw materials and laser cutting of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a first perspective structural diagram of the present invention;

[0037] Figure 2 It is a second viewing angle structural diagram of the present invention;

[0038] Figure 3 is a schematic structural diagram of the carrier frame of the present invention;

[0039] Figure 4 is a schematic structural diagram of a drive module of the present invention;

[0040] Figure 5 It is a schematic diagram of the structure between the laser and the angle adjustment frame of the present invention;

[0041] Figure 6 It is a schematic diagram of the partial splitting of the laser of the present invention;

[0042] Figure 7 is a partial cross-sectional schematic diagram of the laser of the present invention;

[0043] Figure 8 is a schematic cross-sectional view of a contact head of a laser of the present invention;

[0044] Fig. 9 It is a schematic diagram of the disassembly of the contact head of the laser of the present invention;

[0045] Fig.10 This is a schematic diagram of the state in which the laser of the present invention contacts the raw material;

[0046] Fig.11 yes Fig.11 Enlarged schematic diagram of point a in the middle.

[0047] Figure numerals: 1, frame; 2, carrier frame; 21, cover; 22, negative pressure device; 23, connecting pipe; 24, support plate; 25, waste tank; 26, lifting assembly; 3, drive module; 4, laser; 41, laser generator; 42, sleeve; 421, air inlet pipe; 422, locking sleeve; 43, inner tube 1; 431, air supply channel; 44, inner tube 2; 441, bottom ring; 442, air hole; 443, top ring; 45, contact head; 451, air intake pipe; 452, air intake channel; 453, side port; 4 54. Mounting slot; 46. End strip; 461. Counterweight head; 462. Straight slot hole; 47. Spring piece; 48. Adapter frame; 481. Column head; 482. Rectangular block; 49. Elastic member; 5. Angle adjustment frame; 51. Connecting seat; 52. Rotator; 53. Middle frame; 531. Gear ring; 532. Avoidance; 533. Servo motor; 54. Oscillator; 541. Limiting mouth; 542. Tooth groove; 543. Sliding member; 6. Raw material; 61. Main body; 62. Through hole; 63. Chamfering waste; 64. Opening waste. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] like Figure 1 - Fig.11 As shown, this embodiment provides a drilling processing equipment for automotive rubber and plastic products, referring to Figure 1 , including a frame 1, the frame 1 is an aluminum alloy combined frame, forming an installation carrier, including a carrier frame 2, the carrier frame 2 has a horizontal top surface, the top frame is provided with a raw material 6, the carrier frame 2 can drive the raw material 6 to move up and down, including a driving module 3 and a laser 4, refer to Figure 3The driving module 3 drives two guide frames extending forward and backward, and has a guide rail extending left and right. The guide rail is mounted on the two guide frames. The guide frames have a transmission belt, which can mobilize the guide rail to move forward and backward. The guide rail has a transmission chain, which can drive the laser 4 to translate left and right in the horizontal direction, so as to realize the two-degree-of-freedom translation of the laser 4. The laser 4 can generate a vertically downward laser beam, and the raw material 6 is laser cut to form a through hole 62 on the main body 61. Then, a plurality of semi-finished rubber-plastic gaskets with through holes 62 are cut out from the main body 61 according to the contour of the rubber-plastic gasket.

[0050] The practical problem solved by this solution is how to use laser cutting equipment to chamfer the upper edge of the through hole 62 of the rubber gasket to facilitate the subsequent countersunk hole installation of the fastener. Specifically, a configuration is provided to use laser equipment for opening the hole for subsequent chamfering processing, and there is no need to replace the chamfering equipment again for separate chamfering processing.

[0051] For laser 4, refer to Figure 5 The laser 4 includes a laser generator 41, which generates a vertically downward laser beam. A sleeve 42 is installed at the light outlet of the laser generator 41. The sleeve 42 is arranged vertically, and the axis of the sleeve 42 coincides with the laser beam. Figure 7 , an inner tube 1 43 and an inner tube 2 44 are coaxially sleeved in the sleeve 42, and the sleeve 42, the inner tube 1 43 and the inner tube 2 44 are all hollow cylindrical tubes, and the inner tube 2 44 is for the laser to pass through and has gas to continuously enter, which can generate a downward airflow to cool the cross-section at the cutting position, and a contact head 45 is installed at the lower end of the inner tube 1 43, and the contact head 45 is detachably installed at the bottom end of the inner tube 1 43 through a thread, and an end strip 46 is movably installed at the opening position of the bottom end of the contact head 45. When processing the through hole 62, the contact head 45 adopts a cone shape with a thick top and a thin bottom, and the end strip 46 can extend along the outer contour of the contact head 45, so that the aperture at the air outlet position is reduced, the air outlet flow rate is increased, and the heat dissipation capacity is improved. When chamfering, an angle adjustment frame 5 is provided between the driving module 3 and the laser 4, and the angle adjustment frame 5 drives the laser 4 to swing from a vertical state to a top backward tilted state, refer to Fig.11 When tilted, the laser beam is also tilted, and the chamfering can be performed on the upper edge of the through hole 62. Because the raw material 6 is made of rubber, the flexible material makes it have different concave and convex angles. The end strip 46 is pressed on the upper surface of the raw material 6, so that the deformation angle of the raw material 6 can be consistent, thereby ensuring that the chamfering angle is more uniform during cutting, thereby improving the chamfering quality.

[0052] In a further embodiment, a specific configuration is provided for the laser 4 to emit gas downward, referring to Figure 6 and Figure 7An air inlet pipe 421 is installed through the side wall of the sleeve 42. The air inlet pipe 421 inputs the purified air or inert gas from the outside into the sleeve 42. The inert gas can retard the flame and drive away the air at the opening position of the raw material 6, reduce the oxygen at the cutting position, and form an anti-oxidation gas atmosphere at the laser cutting position. Among them, the inner diameter of the sleeve 42 is larger than the outer diameter of the inner tube 43. A gas supply channel 431 is formed between the inner wall of the sleeve 42 and the outer wall of the inner tube 43 for gas to go up. The gas goes up along the outer wall of the inner tube 43, passes over the top of the inner tube 43, enters the inner tube 44, and finally goes down along the inner tube 44 and is ejected from the bottom. And, refer to Figure 7 The circumferential side wall of the inner tube 44 is provided with air holes 442. During the process, part of the gas in the inner tube 44 will absorb heat and expand. This part of the gas will enter the interlayer between the inner tube 1 43 and the inner tube 2 44 through the air holes 442, and transfer part of the heat to the inner tube 1 43. The inner tube 1 43 is made of metal material with good thermal conductivity. The larger contact area between the inner tube 1 43 and the airflow is used to supplement the heat dissipation, thereby achieving efficient cooling.

[0053] In a further embodiment, to ensure the cleanliness of the cutting position, refer to Figure 6 and Figure 7 A top ring 443 is installed on the top of the inner tube 44, and a bottom ring 441 is installed on the inner tube 44 at the bottom opening of the inner tube 1 43. The top ring 443 and the bottom ring 441 are coaxial rings. The top ring 443 and the bottom ring 441 are screwed to the inner wall of the inner tube 1 43 through threads to ensure that the inner tube 44 is vertical. An air suction pipe 451 is installed through the side wall of the contact head 45. The inner wall of the contact head 45 and the outer wall of the inner tube 2 44 are surrounded to form an air suction channel 452. When the air is purged, air is sucked through the air suction pipe 451. A negative pressure space is generated at the position of the air channel 452, and the bottom ring 441 separates the air supply channel 431 from the air intake channel 452, forming two independent passing channels at the bottom of the laser 4. A side port 453 is opened on the side wall of the contact head 45, and the side port 453 faces all around to attract and concentrate the particles of the raw material 6 carried by the upward airflow, and can also increase the coverage of the air intake. The smoke carries small plastic particles, and the smoke generated below is collected immediately to prevent the small plastic particles from falling on the upper surface of the raw material 6 and solidifying, resulting in an uneven upper surface of the finished product.

[0054] In a further embodiment, in order to realize the rotation and sliding of the end strip 46, a specific configuration is provided, referring to Figure 8 and Fig. 9The bottom end of the contact head 45 is provided with a mounting groove 454, which is arranged below the side opening 453. The adapter frame 48 is installed at the mounting groove 454. Specifically, the left and right side walls of the adapter frame 48 are provided with rectangular blocks 482, and the vertical side walls of the rectangular blocks 482 are provided with column heads 481. The adapter frame 48 is rotatably installed in the mounting groove 454 through the column heads 481. The straight slot hole 462 in the middle of the end strip 46 has a horizontal inner wall, and the rectangular block 482 can make the end strip 46 slide up and down relative to the contact head 45.

[0055] When the end strip 46 does not contact the raw material 6, an elastic member 49 is installed between the top of the end strip 46 and the contact head 45, and a spring sheet 47 is installed between the adapter frame 48 and the contact head 45. The spring sheet 47 uses its own elasticity to press the upper half of the end strip 46 against the upper inner wall of the installation groove 454, and the lower part of the contact head 45 is in a cone shape with a thick upper part and a thin lower part, so that the lower parts of the end strips 46 are close to each other. The elastic member 49 uses its own elasticity to keep the end strip 46 at the lower dead point position of the downward extension. At this time, the end strip 46 extends downward to reduce the inner diameter of the bottom opening of the contact head 45, so that the airflow blowing to the through hole 62 can be concentrated by reducing the diameter, ensuring the air outlet speed, and pushing the open hole waste 64 downward;

[0056] When the end strip 46 contacts the raw material 6, a counterweight head 461 is provided at the lower end of the end strip 46. Because the rectangular block 482 is rotatably installed with the contact head 45 through the column head 481, the spring piece 47 is deformed when under pressure, and the upper half of the end strip 46 can swing downward to reduce the angle with the raw material 6. The end strip 46 squeezes the raw material 6 at a smaller angle with the horizontal plane to make the edge of the through hole 62 slightly concave. When the upper part of the laser 4 is slightly tilted downward, the inclination of the raw material 6 plus the inclination of the laser 4 can perform chamfering at a larger angle. During the rotation of the laser 4, the driving module 3 will drive the laser 4 to draw a circle around the axis of the through hole 62 to ensure that the extension line of the end strip 46 that squeezes the raw material 6 intersects with the axis of the through hole 62, that is, it always passes through the center of the through hole 62. This fixed angle of continuous pressure on the raw material 6 can keep the chamfered position of the raw material 6 at a consistent angle, thereby ensuring the quality of the chamfering process.

[0057] In a further embodiment, referring to Figure 5 When the hole is opened, the contact head 45 is vertical and does not contact the raw material 6, which can ensure that the end strip 46 hangs vertically, and the function of converging the air outlet is completed. When the chamfering is performed, refer to Fig.10 The inclination of the contact head 45 matches the inclination of the raw material 6, and a chamfered waste material 63 with a triangular cross section can be cut along the through hole 62 to facilitate the countersunk installation of fasteners such as bolts. At this time, refer to Fig.11Only the end strip 46 between the contact head 45 and the raw material 6 is in a shortened state, and the end strip 46 located above the contact head 45 is in an extended state and inserted into the through hole 62 from top to bottom. Before chamfering, the opening waste 64 can be pushed downward out of the through hole 62, so that the gradually generated chamfering waste 63 can fall down smoothly, avoiding the waste remaining at the opening position and causing subsequent adhesion and other problems.

[0058] In a further embodiment, because of the focal length problem of laser cutting, the distance between the vertically suspended laser 4 and the raw material 6 is greater than the distance between the laser 4 that is in oblique contact with the raw material 6 and the raw material 6. Therefore, when chamfering, the laser 4 needs to be lengthened to ensure that the distance between the laser 4 and the raw material 6 is reasonable during chamfering. Figure 6 and Figure 7 , a threaded groove is provided at the lower part of the circumferential outer wall of the sleeve 42. During adjustment, the locking sleeve 422 can be rotated downward along the threaded groove at the lower part of the sleeve 42. At this time, the inner edge of the locking sleeve 422 is out of contact with the lower edge of the sleeve 42, so that the inner tube 43 can be pulled out downward. After the adjustment is completed, the locking sleeve 422 is rotated upward, and the inner edge of the locking sleeve 422 is in contact with the lower edge of the sleeve 42. Because the inner edge of the locking sleeve 422 adopts a tapered hole with a thick upper part and a thin lower part, when the locking sleeve 422 is rotated upward, the lower part of the sleeve 42 will be squeezed toward the inner tube 43. The notch ensures that the lower part of the sleeve 42 can be squeezed and slightly deformed, so that the lower part of the sleeve 42 and the inner tube 43 are squeezed tightly against each other to complete the fixation after adjustment.

[0059] In a further embodiment, a specific configuration of the angle adjustment frame 5 is disclosed, referring to Figure 5 and Fig.10 The angle adjustment frame 5 includes a connecting seat 51, a rotator 52 and a oscillator 54. A slider is provided at the bottom of the connecting seat 51. The driving module 3 has a horizontal guide rail. A slide groove is provided at the bottom of the slider. Under the guidance of the guide rail, it slides horizontally left and right. The connecting seat 51 and the rotator 52 are connected through the middle frame 53, thereby driving the rotator 52 to slide left and right. The oscillator 54 is fixedly installed on the top of the middle frame 53. The rotator 52 can drive the oscillator 54 and the laser 4 to rotate synchronously, and cooperate with the driving module 3 to drive the laser 4 to draw a circle around the axis of the through hole 62 to ensure that the laser focus of the laser 4 is always at the upper edge of the through hole 62. The laser 4 swings under the drive of the oscillator 54. The rotator 52 can drive the laser 4 to rotate under the limit of the middle frame 53. The oscillator 54 can drive the laser 4 to tilt, and the chamfering of the raw material 6 can be performed.

[0060] In a further embodiment, in order to realize the rotational drive of the laser 4, a specific configuration is disclosed, referring to Figure 5The middle frame 53 is in the shape of a circular ring. The middle frame 53 is connected to the connecting seat 51 through a rotator 52. The middle frame 53 is provided with a waist-shaped avoidance opening 532 in the middle. The laser 4 swings freely in the avoidance opening 532 to avoid affecting the swing adjustment angle of the laser 4. A gear ring 531 is provided at the end of the middle frame 53. The gear ring 531 is located at the top of the middle frame 53. In addition, the middle frame 53 is located above the connecting seat 51 and is equipped with a servo motor 533 meshing with the gear ring 531. The servo motor 533 drives the middle frame 53 to rotate through the meshing transmission with the gear ring 531. When rotating, an annular groove is provided in the middle of the circumferential outer wall of the middle frame 53. The circumferential inner wall of the opening of the connecting seat 51 has an annular protrusion, which is embedded in the annular groove, so that the middle frame 53 can rotate horizontally, ensuring that the rotation center line of the middle frame 53 coincides with the axis of the through hole 62, so that the laser 4 can be driven to rotate.

[0061] In a further embodiment, in order to realize the swing drive of the laser 4, a specific configuration is disclosed, referring to Figure 5 The oscillator 54 is an arc section cut out from a regular circular ring. The center of the oscillator 54 is located at a distance from the lower end of the laser 4 and coincides with the focus of the laser. The oscillator 54 is provided with a limit opening 541, in which a sliding member 543 is installed. The laser 4 is fixedly installed in the sliding member 543. In this way, when the laser 4 swings, it rotates around the focus of the laser. The outer wall of the oscillator 54 is provided with a tooth groove 542. The sliding member 543 is provided with a corresponding stepping motor at the position corresponding to the tooth groove 542. The upper and lower ends of the sliding member 543 are provided with arc plates. The two arc plates are in sliding contact with the upper and lower side walls of the oscillator 54 respectively to play a limiting role. The sliding member 543 is slidably installed in the limit opening 541. The sliding member 543 slides under the guidance of the oscillator 54. Because the limiting is precise, focusing can be convenient, and the stepping motor can complete the swing drive by meshing with the tooth groove 542 through the gear.

[0062] In a further embodiment, a specific configuration of the carrier frame 2 is disclosed, referring to Figure 2 and Figure 3The carrier 2 includes a cover shell 21 with an opening upward. The cover shell 21 opens upward and is rectangular, which is convenient for carrying rectangular raw materials 6. Support plates 24 arranged side by side are installed on the upper part of the cover shell 21, and the support plates 24 are installed in the opening. The support plates 24 suspend the raw materials 6. In order to avoid the pressure depression of the raw materials 6 affected by the support plates 24, the support plates 24 can slide left and right. The vertical inner wall position of the opening position of the cover shell 21 is provided with a horizontal slide groove extending left and right. The front and rear ends of the support plate 24 extend into the horizontal slide groove and can slide freely to realize the horizontal sliding of the support plate 24. While suspending the raw materials 6, avoid being in a position directly below the opening. The lower part of the cover shell 21 is connected to a negative pressure device 22, and the negative pressure device 22 makes the cover shell 21 in a negative pressure state. State, the raw material 6 is sucked tightly, and the friction force of the support plate 24 is used to prevent the raw material 6 from being dragged and slipped when chamfering. A connecting pipe 23 is provided between the cover shell 21 and the negative pressure equipment 22, and a mesh plate is provided at the connecting position of the connecting pipe 23 and the cover shell 21 to prevent waste from entering the negative pressure equipment 22. In addition, a waste containing tank 25 is provided at the lowest point of the cover shell 21, and the waste is accumulated in the waste containing tank 25. A movable door is provided at the bottom of the waste containing tank 25, which can be opened for waste discharge operation. A lifting component 26 is installed between the cover shell 21 and the frame 1, and the lifting component 26 can drive the cover shell 21 to move up and down. The cover shell 21 moves down to leave sufficient space for loading and unloading the raw material 6 and for the laser 4 to cut the raw material 6. The cover shell 21 moves up to get close to the laser 4 for extrusion contact.

[0063] A method for drilling holes in automotive rubber and plastic products, comprising the following steps:

[0064] S1. When processing the rubber and plastic gasket for automobiles, in order to process the rubber and plastic gasket blank with the through hole 62 on the raw material 6, the laser 4 is vertically moved, and then the laser 4 is driven by the driving module 3 to move horizontally, so as to process the round hole or waist-shaped hole penetrating the main body 61;

[0065] S2. To facilitate the installation of fasteners such as rivets and bolts in the countersunk holes, the laser 4 is tilted through the angle adjustment frame 5. The end strip 46 between the contact head 45 and the raw material 6 is in a tilted state, and the raw material 6 is squeezed to make the edge of the through hole 62 slightly concave. The support plate 24 of the carrier 2 suspends the raw material 6 to avoid the position directly below the punching hole. The negative pressure device 22 of the carrier 2 puts the cover 21 in a negative pressure state, sucks the raw material 6 tightly, and cooperates with the friction force of the support plate 24 to prevent the raw material 6 from being dragged and slipped during chamfering, so that the raw material 6 is at a stable angle when being chamfered. The extension line of the end strip 46 that squeezes the raw material 6 intersects with the axis of the through hole 62, and cooperates with the driving module 3 to drive the laser 4 to draw a circle around the axis of the through hole 62, and the chamfering waste 63 is processed along the chamfer of the through hole 62 to complete the chamfering process;

[0066] S3, when the laser is generated, the laser 4 is provided with continuous air intake, which will generate continuous downward airflow in the inner tube 44, so that the through hole 62 is quickly cooled and the waste material 64 is blown downward out of the through hole 62, so as to realize instant waste discharge and take out the heat inside the inner tube 44, so as to ensure that the temperature of the laser 4 can be controlled during long-term operation;

[0067] S4, when opening a hole, the laser 4 is in a vertical state, and the end strip 46 extends downward to reduce the inner diameter of the bottom opening of the contact head 45, so that the airflow blowing toward the through hole 62 can be concentrated by reducing the diameter, and the opening waste 64 is blown downward to be discharged from the through hole 62, thereby ensuring the penetration of the through hole 62;

[0068] S5. During the chamfering process, the laser 4 contacts the raw material 6. The extrusion of the end strip 46 can also reduce the tilt angle of the laser 4, ensuring that the position of the laser 4 is relatively stable. At this time, the inner tube 44 generates a continuous downward airflow to blow the chamfering waste 63 downward. The end strip 46 located above the contact head 45 is in an extended state and inserted into the through hole 62 from top to bottom. Before chamfering, the opening waste 64 can be pushed downward out of the through hole 62, so that the gradually generated chamfering waste 63 can fall downward smoothly, avoiding the chamfering waste 63 from adhering to the inner wall of the through hole 62. The negative pressure device 22 sucks air downward to attract the chamfering waste 63 and the opening waste 64 downward and concentrate them in the waste storage tank 25.

[0069] S6. After chamfering is completed, the laser 4 moves upward and returns to a vertical state, and the end strip 46 extends downward to reduce the inner diameter of the bottom opening of the contact head 45, so that the airflow blowing toward the through hole 62 can be accelerated by reducing the diameter to prevent the opening waste 64 or the chamfering waste 63 from adhering to the inner wall of the through hole 62 or the chamfering position, thereby ensuring the neatness of the position of the through hole 62.

[0070] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A drilling processing device for automobile rubber and plastic products, comprising a frame (1), a carrier frame (2), a driving module (3) and a laser (4), wherein a raw material (6) is arranged on the top of the carrier frame (2) and drives the raw material (6) to move up and down, the driving module (3) drives the laser (4) to translate in the horizontal direction, and the laser (4) can generate a vertically downward laser beam, characterized in that: The laser (4) comprises a laser generator (41), a sleeve (42) is installed at the light outlet of the laser generator (41), an inner tube (43) and an inner tube (44) are coaxially sleeved inside the sleeve (42), the inner tube (44) allows laser to pass through and allows gas to continuously enter, a contact head (45) is installed at the lower end of the inner tube (43), and an end strip (46) is movably installed at the bottom opening of the contact head (45); It also includes an angle adjustment frame (5) installed between the driving module (3) and the laser (4), wherein the driving module (3) drives the laser (4) to move in translation through the angle adjustment frame (5), and the angle adjustment frame (5) drives the laser (4) to swing from a vertical state to a top backward tilted state; When the laser (4) is not in contact with the raw material (6), the end strip (46) extends downward to reduce the inner diameter of the bottom opening of the contact head (45); when the laser (4) is tilted, the end strip (46) in contact with the raw material (6) swings to squeeze the raw material (6) downward.

2. The automotive rubber and plastic product drilling equipment according to claim 1, characterized in that: The bottom end of the contact head (45) is provided with a mounting groove (454), the middle part of the end strip (46) is provided with a straight slot hole (462), a rectangular block (482) is slidably mounted in the straight slot hole (462), an adapter frame (48) is installed between the rectangular blocks (482), the rectangular block (482) is rotatably mounted in the mounting groove (454) through a column head (481), a counterweight head (461) is provided at the lower end of the end strip (46), an elastic member (49) is installed between the top end of the end strip (46) and the contact head (45), and a spring sheet (47) is installed between the adapter frame (48) and the contact head (45).

3. The automotive rubber and plastic product drilling equipment according to claim 2, characterized in that: The angle adjustment frame (5) comprises a connecting seat (51), a rotator (52) and an oscillator (54); the connecting seat (51) and the rotator (52) are connected via a middle frame (53); the oscillator (54) is fixedly mounted on the top of the middle frame (53); the laser (4) oscillates under the drive of the oscillator (54); and the rotator (52) can drive the laser (4) to rotate under the limit of the middle frame (53).

4. The automotive rubber and plastic product drilling equipment according to claim 3, characterized in that: The middle portion of the middle frame (53) is provided with an escape opening (532), and the laser (4) swings freely in the escape opening (532). The end of the middle frame (53) is provided with a gear ring (531), and the middle frame (53) is connected to the connecting seat (51) via a rotator (52). The middle frame (53) is located above the connecting seat (51) and is provided with a servo motor (533) meshing with the gear ring (531).

5. The automotive rubber and plastic product drilling equipment according to claim 4, characterized in that: The oscillator (54) is provided with a limit opening (541), a sliding member (543) is installed in the limit opening (541), the laser (4) is fixedly installed in the sliding member (543), a tooth groove (542) is provided on the outer wall of the oscillator (54), and a corresponding stepping motor is provided at a position of the sliding member (543) corresponding to the tooth groove (542).

6. The automotive rubber and plastic product drilling equipment according to claim 1, characterized in that: An air inlet pipe (421) is installed through the side wall of the sleeve (42), an air supply channel (431) is formed between the inner wall of the sleeve (42) and the outer wall of the first inner tube (43), and an air hole (442) is provided on the circumferential side wall of the second inner tube (44).

7. The automotive rubber and plastic product drilling equipment according to claim 6, characterized in that: A top ring (443) is installed on the top of the inner tube 2 (44); a bottom ring (441) is provided on the inner tube 2 (44) at the bottom opening of the inner tube 1 (43); the top ring (443) and the bottom ring (441) are both screwed to the inner wall of the inner tube 1 (43) through threads; an air intake pipe (451) is installed through the side wall of the contact head (45); the inner wall of the contact head (45) and the outer wall of the inner tube 2 (44) are surrounded to form an air intake channel (452); and a side opening (453) is opened on the side wall of the contact head (45).

8. The automotive rubber and plastic product drilling equipment according to claim 1, characterized in that: A thread groove is provided at the lower portion of the circumferential outer wall of the sleeve (42); a notch is designed at the position where the thread groove is provided on the sleeve (42); a locking sleeve (422) is screwed on the lower portion of the sleeve (42) through the thread groove; the locking sleeve (422) is screwed upward to squeeze the lower portion of the sleeve (42) and the inner tube (43) together.

9. The automotive rubber and plastic product drilling equipment according to claim 1, characterized in that: The support frame (2) comprises a cover shell (21) with an opening facing upward, a support plate (24) arranged side by side is installed on the upper part of the cover shell (21), a negative pressure device (22) is connected to the lower part of the cover shell (21), a connecting pipe (23) is provided between the cover shell (21) and the negative pressure device (22), a waste container (25) is provided at the lowest point of the cover shell (21), and a lifting assembly (26) is installed between the cover shell (21) and the frame (1).

10. A method for drilling holes in automotive rubber and plastic products, using the automotive rubber and plastic product drilling equipment according to any one of claims 1 to 9, characterized in that: The steps include: S1, placing the raw material (6) on the top of the carrier (2), driving the laser (4) with the driving module (3) to move horizontally, and processing a vertical through hole (62) on the raw material (6) with the laser beam; S2, when the laser (4) is not in contact with the raw material (6), the end strip (46) extends downward to reduce the inner diameter of the bottom opening of the contact head (45), and the gas continues to enter the inner tube (44) and is ejected from the bottom, generating an air flow blowing toward the raw material (6); S3, the angle adjustment frame (5) drives the laser (4) to swing from a vertical state to a top backward tilted state, the support frame (2) drives the raw material (6) upward to contact the laser (4) in the tilted state, the end strip (46) located below the contact head (45) squeezes the raw material (6) downward, and the laser (4) rotates around the axis of the through hole (62) to chamfer the upper edge of the through hole (62) through the laser beam.

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