Laser cutting tool for automobile bumper machining

Abstract

The invention relates to the technical field of laser cutting tools, and discloses a laser cutting tool for automobile bumper machining, which comprises a bottom plate, a plurality of upright posts fixedly mounted on the bottom plate, lifting parts fixedly mounted on the front surfaces of the upright posts and used for bearing automobile bumpers, and further comprises a shaft rod, a plurality of laser cutting devices and a plurality of laser cutting devices, the rotating shaft is rotationally mounted on the stand columns through fixing bearings; the sliding sleeve is arranged on the shaft rod in a sliding and sleeving mode and can rotate along with the shaft rod; the positioning ring is fixedly connected with the sliding sleeve through a connecting arm and can be pressed on the automobile bumper to position the laser cutting position; according to the laser cutting tool for automobile bumper machining, the automobile bumper is stably supported through the lifting piece, the positioning ring is pressed downwards on the surface of the automobile bumper, the automobile bumper can be further fixed, meanwhile, the laser cutting position can be assisted to be positioned, and then the positioning precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting tooling, in particular to a laser cutting tooling for processing automobile bumpers. Background Art

[0002] Laser cutting technology is a modern processing technology that uses high-energy laser beams to locally heat and melt materials to achieve cutting. It has the characteristics of high precision, non-contact, and wide application range. It has been widely used in automobile manufacturing, aerospace, electronic equipment and other industries. Among them, in the field of automobile manufacturing, laser cutting is one of the most commonly used and key processes, especially in the processing of complex parts such as automobile bumpers, it is an indispensable and important technology.

[0003] The car bumper not only needs to meet the requirements of lightweight and high strength in structure, but also needs to integrate multiple functional designs, such as sensor holes, decorative openings, etc. Among them, the cutting of sensor holes is generally achieved using laser cutting equipment.

[0004] However, in actual applications, we found that the existing laser cutting tooling still has certain shortcomings when positioning the car bumper for sensor hole cutting and punching:

[0005] 1. Automobile bumpers are usually made of plastic or resin materials, and the surface is an irregular curved surface, wherein the opening position of the sensor hole is generally on the curved surface; however, the fixing fixtures used in the prior art are mostly universal fixtures, which are difficult to adapt to the curved surface characteristics of the bumper and have insufficient positioning accuracy.

[0006] Second, during the laser cutting process, harmful gases and particles and other by-products will be generated, which will not only adhere to the cutting area and the surface of the equipment, reducing cutting efficiency and quality, but also be harmful to human health; however, traditional fixed tooling cannot solve the above problems. Summary of the invention

[0007] 1. Technical issues to be solved

[0008] In view of the deficiencies in the prior art, the present invention provides a laser cutting tool for automobile bumper processing, which has the advantages of high positioning accuracy and the ability to effectively handle harmful gases and particles.

[0009] (II) Technical solution

[0010] In order to achieve the above-mentioned purpose of high positioning accuracy and effective treatment of harmful gases and particles, the present invention provides the following technical solutions: a laser cutting tool for automobile bumper processing, comprising a bottom plate, a plurality of columns are fixedly installed on the bottom plate, and a lifting piece for supporting the automobile bumper is fixedly installed on the front of the column, and further comprising:

[0011] A shaft is rotatably mounted on a plurality of columns through fixed bearings;

[0012] The sliding sleeve is arranged on the shaft and can rotate along with the shaft;

[0013] The positioning ring is fixedly connected to the sliding sleeve through the connecting arm and can be pressed on the car bumper to locate the laser cutting position;

[0014] The annular tube is buried in the positioning ring, and suction joints are evenly installed on the inner wall. The annular tube is connected to the negative pressure source through a top pipe preinstalled in the connecting arm.

[0015] As a preferred technical solution of the present invention, a spline is formed on the outer wall of the shaft rod, and the spline is slidably arranged in a flower groove, and the flower groove is provided on the inner wall of the sliding sleeve.

[0016] As a preferred technical solution of the present invention, an air cavity is formed inside the shaft, and a transverse opening is opened in the air cavity corresponding to the installation position of the sliding sleeve, and the transverse opening is closed by a soft seal, and the soft seal is supported by a support member;

[0017] The end of the push pipe protrudes from the inner wall of the sliding sleeve and is evenly provided with air inlets. The end of the push pipe can partially push open the soft seal.

[0018] As a preferred technical solution of the present invention, one end of the shaft is driven to rotate by a driving device, and the other end is connected to the negative pressure source through a suction hose.

[0019] As a preferred technical solution of the present invention, it also includes a fixed plate, which is fixedly installed on the side of the column, and a sliding cylinder is slidably installed on the top, an inner cavity is formed inside the sliding cylinder, a piston is movably arranged in the inner cavity, one side of the inner cavity is connected to the water source through a water inlet pipe, and a one-way water inlet valve is provided on the water inlet pipe; the other side of the inner cavity is connected to the coil through a branch pipe, and a one-way water outlet valve is provided on the branch pipe;

[0020] The coil is arranged at a position corresponding to the positioning ring and is used to fit under the bumper of the car. The end of the coil is bent downward and connected to an atomizing nozzle.

[0021] As a preferred technical solution of the present invention, the sliding cylinder is fixedly connected to a fixing ring via a connecting rod, and the fixing ring is rotatably mounted on the sliding sleeve.

[0022] As a preferred technical solution of the present invention, a lower support spring is fixedly arranged between the top of the piston and the inner top wall of the inner cavity;

[0023] A driven rack is fixedly mounted on the top of the piston, an intermediate gear is meshed on the outer wall of the driven rack, the intermediate gear is rotatably mounted in a vertical groove opened on the top of the sliding cylinder, and a driving rack is meshed on the other side;

[0024] When the shaft is rotated to press the positioning ring onto the car bumper, the active rack can be pressed down synchronously through the connecting arm.

[0025] As a preferred technical solution of the present invention, it also includes a slag discharge barrel, which is connected to one end of the shaft rod close to the suction hose. A filter screen is fixedly installed in the air cavity of the slag discharge barrel, and the filter screen is closer to the suction hose than the slag discharge barrel.

[0026] As a preferred technical solution of the present invention, a sleeve is movably mounted on the slag discharge tube, an elastic washer is fixedly arranged between the top of the sleeve and the shaft, and the bottom of the sleeve abuts against the receiving plate of the lower liner;

[0027] The lower lining plate is fixedly mounted on the column, and a material collecting cavity is formed inside. The top of the material collecting cavity has an opening, and the material receiving plate is rotatably mounted at the opening through a rotating shaft;

[0028] A torsion spring is also provided at the connection between the rotating shaft and the inner wall of the opening, and the torsion spring is used to provide a rotation force for the receiving plate toward the opening direction.

[0029] As a preferred technical solution of the present invention, a cleaning rod is fixedly mounted on the outer wall of the sleeve, the end of the cleaning rod extends into the interior of the air cavity and is fixedly connected with a scraper, and the scraper is movably scraped on the filter screen.

[0030] (III) Beneficial effects

[0031] Compared with the prior art, the present invention provides a laser cutting tool for automobile bumper processing, which has the following beneficial effects:

[0032] 1. The laser cutting tool for automobile bumper processing stably supports the automobile bumper through the lifting piece, and presses down on the surface of the automobile bumper through the positioning ring, which can not only further fix the automobile bumper, but also assist in locating the laser cutting position, thereby improving the positioning accuracy.

[0033] 2. The laser cutting tool for automobile bumper processing has a suction joint in the annular tube inside the positioning ring, which is connected to a negative pressure source. During the cutting process, it can effectively remove smoke and tiny particles generated by cutting, which not only ensures the cleanliness of the processing area and avoids dust interfering with the cutting accuracy, but also reduces the harm to the human body.

[0034] 3. The laser cutting tooling for automobile bumper processing and the coil system provide effective dust reduction and cooling effects for the cutting area on the automobile bumper, which not only reduces the risk of thermal deformation of the material, further improves the processing accuracy of the sensor hole, but also further settles harmful particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0036] Figure 2 It is an enlarged schematic diagram of the column part of the present invention;

[0037] Figure 3 is a cross-sectional view of the positioning ring portion of the present invention;

[0038] Figure 4 is a cross-sectional view of the shaft portion of the present invention;

[0039] Figure 5 It is an enlarged schematic diagram of the sliding cylinder part of the present invention;

[0040] Figure 6 It is a cross-sectional view of the sliding cylinder part of the present invention;

[0041] Figure 7 It is an enlarged schematic diagram of the slag discharge tube part of the present invention;

[0042] Figure 8 It is a cross-sectional view of the slag discharge tube part of the present invention.

[0043] In the figure: 1, bottom plate; 2, column; 3, support plate; 4, bearing pad; 5, shaft rod; 6, sliding sleeve; 7, spline; 8, flower groove; 9, connecting arm; 10, positioning ring; 11, anastomotic pad; 12, air cavity; 13, soft sealing pad; 14, support member; 15, top pipe; 16, annular pipe; 17, suction joint; 18, air inlet; 19, fixing plate; 20, sliding cylinder; 21, connecting rod; 22, fixing Fixed ring; 23, inner cavity; 24, piston; 25, lower support spring; 26, driven rack; 27, intermediate gear; 28, active rack; 29, water inlet pipe; 30, branch pipe; 31, coil; 32, atomizing nozzle; 33, suction hose; 34, slag discharge cylinder; 35, lower lining plate; 36, filter screen; 37, sleeve; 38, elastic gasket; 39, cleaning rod; 40, scraper teeth; 41, receiving plate. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Embodiment 1:

[0046] See also Figure 1-Figure 4 , a laser cutting tool for automobile bumper processing, including a bottom plate 1, such as Figure 1 As shown, four columns 2 are fixedly mounted on the base plate 1, the four columns 2 are arranged in a straight line, and a supporting member for supporting the automobile bumper is fixedly mounted on the front. In this embodiment, the supporting member is a support plate 3, which is fixedly mounted on the column 2. A soft bearing pad 4 is also installed on the top of the support plate 3 for direct contact with the automobile bumper. The bearing pad 4 and the support plate 3 are preferably detachably connected (by plug-in, screw connection, etc.) to facilitate replacement of the support plate 3 to suit different models of automobile bumpers.

[0047] like Figure 1 As shown, a shaft 5 is rotatably mounted on the four columns 2 through a fixed bearing, and a sliding sleeve 6 is provided on the shaft 5 so as to rotate along with the shaft 5. Specifically, as shown in FIG. Figure 4 As shown, a spline 7 is formed on the outer wall of the shaft 5, and the spline 7 is slidably set in a flower groove 8. The flower groove 8 is opened on the inner wall of the sliding sleeve 6. Through the setting of the spline 7 and the flower groove 8, the sliding sleeve 6 can slide on the shaft 5 and also rotate with the shaft 5.

[0048] like Figure 2 As shown, a positioning ring 10 is fixedly connected to the sliding sleeve 6 through a connecting arm 9. The positioning ring 10 can be pressed on the car bumper to locate the laser cutting position. In this embodiment, a soft matching pad 11 can be detachably installed at the bottom of the positioning ring 10 for direct contact with the car bumper.

[0049] During laser cutting, the lifting piece can stably support the car bumper, and the positioning ring 10 can not only further fix the car bumper by pressing down on the surface of the car bumper, but also assist in locating the laser cutting position, thereby improving the positioning accuracy.

[0050] like Figure 3As shown, an annular tube 16 is buried in the positioning ring 10, and suction joints 17 are evenly installed on the inner wall of the annular tube 16. The annular tube 16 is connected to the negative pressure source through a top pipe 15 pre-installed in the connecting arm 9. During the cutting process, the negative pressure source is utilized to effectively remove the cutting smoke and tiny particles generated during cutting through the suction joint 17, which not only ensures the cleanliness of the processing area and avoids dust interfering with the cutting accuracy, but also reduces the harm to the human body.

[0051] In this embodiment, an air cavity 12 is formed inside the shaft 5, and a transverse opening is opened in the air cavity 12 corresponding to the installation position of the sliding sleeve 6. The transverse opening is closed by a soft seal 13, and the soft seal 13 is supported by a support member 14 (such as a spring). Figure 3 and Figure 4 As shown, the end of the top pipe 15 protrudes from the inner wall of the sliding sleeve 6 and is evenly provided with air inlets 18, and the end of the top pipe 15 can partially push open the soft seal 13;

[0052] When the sleeve 6 slides on the shaft 5, a section of the soft sealing pad 13 at the corresponding position of the sleeve 6 can be pushed open through the push tube 15, thereby connecting the push tube 15 and the air cavity 12. Furthermore, even if the position of the sleeve 6 on the shaft 5 is adjusted to change the cutting position, the airway can always be kept connected.

[0053] like Figure 1 As shown, one end of the shaft 5 is driven to rotate by a driving device (such as a motor), and the other end is connected to a negative pressure source (such as a fan) through a suction hose 33.

[0054] Embodiment 2:

[0055] See also Figure 2 , Figure 5 and Figure 6 On the basis of the first embodiment, in this embodiment, a fixing plate 19 is further provided, which is fixedly mounted on the side of the column 2, and a sliding cylinder 20 is slidably mounted on the top. The sliding cylinder 20 is fixedly connected to the fixing ring 22 through a connecting rod 21, and the fixing ring 22 is rotatably mounted on the sliding sleeve 6, so that the sliding sleeve 6 can move together with the sliding cylinder 20;

[0056] In the present invention, the movement of the sliding cylinder 20 on the fixed plate 19 can be achieved by a cylinder, or other forms of driving methods can be used as needed to electrically control the positions of the sliding cylinder 20 and the sliding sleeve 6.

[0057] like Figure 6 As shown, an inner cavity 23 is formed inside the sliding cylinder 20, and a piston 24 is movably arranged in the inner cavity 23. One side of the inner cavity 23 is connected to the water source through a water inlet pipe 29, and a one-way water inlet valve is provided on the water inlet pipe 29; the other side of the inner cavity 23 is connected to the coil 31 through a branch pipe 30, and a one-way water outlet valve is provided on the branch pipe 30. Figure 2 The coil 31 is arranged at a position corresponding to the positioning ring 10 and is used to fit under the bumper of the car. In addition, the end of the coil 31 is bent downward and connected to an atomizing nozzle 32;

[0058] By fitting the coil 31 under the car bumper (corresponding to the periphery of the cutting position), not only can the support effect be further ensured, but also an effective cooling effect can be provided, thereby reducing the risk of thermal deformation of the material during laser cutting, thereby improving the processing accuracy of the sensor hole;

[0059] When the cooling water in the coil 31 is sprayed out through the atomizing nozzle 32, it can also provide dust reduction effect and remove water-soluble harmful gases, and settle harmful particles that are not absorbed by the suction joint 17, thereby improving the treatment effect of laser cutting by-products.

[0060] like Figure 6 As shown, a lower support spring 25 is fixedly arranged between the top of the piston 24 and the inner top wall of the inner cavity 23, and a driven rack 26 is also fixedly installed on the top of the piston 24. The outer wall of the driven rack 26 is meshed with an intermediate gear 27. The intermediate gear 27 is rotatably installed in the vertical groove opened on the top of the sliding cylinder 20, and the other side is meshed with an active rack 28. When the shaft 5 rotates to press the positioning ring 10 on the car bumper, the active rack 28 can also be pressed down synchronously through the connecting arm 9, thereby moving the piston 24 upward. When the piston 24 moves upward, while compressing the lower support spring 25, it also absorbs cooling water into the inner cavity 23 through the water inlet pipe 29;

[0061] After the cutting is completed, the shaft 5 rotates in the opposite direction to reset, releasing the downward pressure on the active rack 28. At this time, the piston 24 will move downward under the action of the lower support spring 25, and then the cooling water in the inner cavity 23 will be filled into the coil 31 through the branch pipe 30, replacing the heated water in the coil 31, and the heated water will be sprayed out through the atomizing nozzle 32 to provide dust reduction and remove water-soluble harmful gases.

[0062] A water collection tray can be set up as needed to collect sewage.

[0063] Embodiment three:

[0064] See also Figure 1 , Figure 7 and Figure 8 On the basis of the first or second embodiment, in the present embodiment, a slag discharge barrel 34 is further provided, which is connected through one end of the shaft rod 5 close to the suction hose 33, and a filter screen 36 is fixedly installed in the air cavity 12 of the slag discharge barrel 34. The filter screen 36 is closer to the suction hose 33 than the slag discharge barrel 34. The particles sucked out can be filtered through the filter screen 36, and these particles can be discharged through the slag discharge barrel 34, so as to be collected uniformly to prevent the particles from affecting the fan.

[0065] like Figure 7 As shown, a sleeve 37 is movably sleeved on the slag discharge barrel 34, an elastic gasket 38 is fixedly arranged between the top of the sleeve 37 and the shaft 5, and the bottom of the sleeve 37 can be against the receiving plate 41 of the lower liner 35. The lower liner 35 is specifically fixedly installed on the column 2, and a collecting cavity is formed inside. The top of the collecting cavity has an opening, and the receiving plate 41 is rotatably installed at the opening through a rotating shaft, and the bottom of the sleeve 37 is specifically against the receiving plate 41 to be closed;

[0066] In this embodiment, a torsion spring is further provided at the connection between the rotating shaft and the inner wall of the opening, and the torsion spring is used to provide a rotation force for the receiving plate 41 in the opening direction. When there is no external force, the receiving plate 41 is as follows: Figure 7 The diagram shows a tilted open state, where the particles on it can slide into the aggregate cavity;

[0067] When the shaft 5 rotates to press the positioning ring 10 onto the bumper of the car, the slag discharge barrel 34 is also driven by the shaft 5 to rotate and become a vertical state. At this time, the bottom end of the bottom sleeve 37 flattens the receiving plate 41, and the receiving plate 41 can be used to seal the sleeve 37, thereby avoiding affecting the suction of the gas.

[0068] After the laser cutting is completed and the shaft 5 is rotated to reset, the slag discharge barrel 34 also rotates. At this time, on the one hand, it is separated from the receiving plate 41, and on the other hand, the collected slag will also fall onto the receiving plate 41, and then with the inclination of the receiving plate 41 under the action of the torsion spring, the slag can be collected in the collecting cavity.

[0069] In this embodiment, a blocking member is provided at the top opening of the collecting cavity as required, so that the collecting plate 41 can at most become flush, thereby ensuring its sealing effect on the slag discharge tube 34 .

[0070] Since an elastic washer 38 is fixedly disposed between the top of the sleeve 37 and the shaft 5 , the entire sleeve 37 can be elastically moved upward to facilitate its tight contact with the receiving plate 41 .

[0071] like Figure 8 As shown, a cleaning rod 39 is fixedly mounted on the outer wall of the sleeve 37. The end of the cleaning rod 39 extends to the inside of the air cavity 12 and is fixedly connected to a scraper 40. The scraper 40 is movably scraped on the filter screen 36. When the sleeve 37 floats up and down, the cleaning rod 39 will also drive the scraper 40 to move up and down. The scraper 40 moves up and down on the filter screen 36, which can cause the filter screen 36 to vibrate and shake, thereby achieving the effect of cleaning the filter screen 36 and avoiding its mesh from being blocked.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser cutting tool for processing automobile bumpers, comprising a base plate (1), on which a plurality of columns (2) are fixedly mounted, and on the front of the columns (2) are fixedly mounted lifting members for supporting automobile bumpers, characterized in that: Also includes: A shaft (5) is rotatably mounted on a plurality of columns (2) via fixed bearings; A sliding sleeve (6), which is arranged on the shaft (5) and can rotate along with the shaft (5); A positioning ring (10) is fixedly connected to the sliding sleeve (6) via a connecting arm (9) and can be pressed onto a car bumper to locate a laser cutting position; The annular tube (16) is buried in the positioning ring (10), and suction joints (17) are evenly installed on the inner wall. The annular tube (16) is connected to the negative pressure source through a top tube (15) pre-installed in the connecting arm (9).

2. The laser cutting tool for automobile bumper processing according to claim 1, characterized in that: A spline (7) is formed on the outer wall of the shaft rod (5), and the spline (7) is slidably arranged in a flower groove (8), and the flower groove (8) is arranged on the inner wall of the sliding sleeve (6).

3. The laser cutting tool for automobile bumper processing according to claim 1, characterized in that: An air cavity (12) is formed inside the shaft (5), and a transverse opening is provided in the air cavity (12) corresponding to the installation position of the sliding sleeve (6), and the transverse opening is closed by a soft sealing gasket (13), and the soft sealing gasket (13) is supported by a support member (14); The end of the push tube (15) protrudes from the inner wall of the sliding sleeve (6) and is evenly provided with air inlets (18). The end of the push tube (15) can partially push open the soft sealing pad (13).

4. The laser cutting tool for automobile bumper processing according to claim 3 is characterized in that: One end of the shaft (5) is driven to rotate by a driving device, and the other end is connected to a negative pressure source via a suction hose (33).

5. The laser cutting tool for automobile bumper processing according to claim 1, characterized in that: It also includes a fixed plate (19) fixedly mounted on the side of the column (2), and a sliding cylinder (20) is slidably mounted on the top, an inner cavity (23) is formed inside the sliding cylinder (20), a piston (24) is movably arranged in the inner cavity (23), one side of the inner cavity (23) is connected to a water source through a water inlet pipe (29), and a one-way water inlet valve is provided on the water inlet pipe (29); the other side of the inner cavity (23) is connected to a coil (31) through a branch pipe (30), and a one-way water outlet valve is provided on the branch pipe (30); The coil (31) is arranged at a position corresponding to the positioning ring (10) and is used to fit under the bumper of the automobile. The end of the coil (31) is bent downward and connected to an atomizing nozzle (32).

6. The laser cutting tool for automobile bumper processing according to claim 5, characterized in that: The sliding cylinder (20) is fixedly connected to a fixing ring (22) via a connecting rod (21), and the fixing ring (22) is rotatably mounted on the sliding sleeve (6).

7. The laser cutting tool for automobile bumper processing according to claim 5, characterized in that: A lower support spring (25) is fixedly arranged between the top of the piston (24) and the inner top wall of the inner cavity (23); A driven rack (26) is fixedly mounted on the top of the piston (24), an intermediate gear (27) is meshed on the outer wall of the driven rack (26), the intermediate gear (27) is rotatably mounted in a vertical groove opened on the top of the sliding cylinder (20), and a driving rack (28) is meshed on the other side; When the shaft rod (5) rotates to press the positioning ring (10) onto the automobile bumper, the active rack (28) can be pressed down synchronously via the connecting arm (9).

8. The laser cutting tool for automobile bumper processing according to claim 5, characterized in that: It also includes a slag discharge barrel (34) which is connected to one end of the shaft rod (5) close to the suction hose (33). A filter screen (36) is fixedly installed in the air cavity (12) of the slag discharge barrel (34). The filter screen (36) is closer to the suction hose (33) than the slag discharge barrel (34).

9. The laser cutting tool for automobile bumper processing according to claim 8, characterized in that: The slag discharge cylinder (34) is movably provided with a sleeve (37), an elastic washer (38) is fixedly provided between the top of the sleeve (37) and the shaft rod (5), and the bottom of the sleeve (37) abuts against the receiving plate (41) of the lower lining plate (35); The lower lining plate (35) is fixedly mounted on the column (2), and a material collecting cavity is formed inside. The top of the material collecting cavity has an opening, and the material receiving plate (41) is rotatably mounted at the opening via a rotating shaft; A torsion spring is also provided at the connection between the rotating shaft and the inner wall of the opening, and the torsion spring is used to provide a rotational force in the opening direction for the receiving plate (41).

10. The laser cutting tool for automobile bumper processing according to claim 9, characterized in that: A cleaning rod (39) is also fixedly mounted on the outer wall of the sleeve (37), the end of the cleaning rod (39) extends into the interior of the air cavity (12) and is fixedly connected to a scraping tooth (40), and the scraping tooth (40) is movably scraped on the filter screen (36).

Images