Silencer manufacturing device and method

Abstract

The invention discloses a silencer manufacturing device and method, and relates to the technical field of silencers. According to the silencer manufacturing device and method, the height of clamping heads is adjusted through a first telescopic cylinder, the distance between the two clamping heads is adjusted through arrangement of a horizontal pushing assembly, and the inclination angle of the clamping heads can be adjusted through arrangement of a rotating assembly; and through the arrangement of the locking assembly, the clamping head with the angle adjusted can be locked and fixed, the situation that the position of the clamping head is changed in the machining process is prevented, and the machining quality of the silencer is guaranteed. And a controller is externally arranged, and the first telescopic cylinder, the horizontal pushing assembly, the rotating assembly and the locking assembly are all connected with the controller, so that the working state of the clamping head can be controlled through the controller, an automatic welding device for machining the silencer is better matched, and the machining efficiency of the silencer is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mufflers, and in particular to a muffler manufacturing device and method. Background Art

[0002] Internal combustion engine noise is the main noise source of vehicles or operating equipment powered by it, and is an important indicator that affects its performance and product competitiveness. Internal combustion engine noise includes aerodynamic noise, combustion noise and mechanical noise, etc. Aerodynamic noise is divided into exhaust noise and intake noise. Exhaust noise is the main contributor to the total sound power of the internal combustion engine and occupies a dominant position in the overall noise of the internal combustion engine. Therefore, reducing the exhaust noise of the internal combustion engine is of decisive significance. The most direct and effective way to reduce the exhaust noise of the internal combustion engine is to install an exhaust muffler. The muffler consists of two pipes of different lengths. Its muffler principle is to cause impedance changes during sound propagation through sudden changes in the cross-section of the pipe or structures such as side-connected resonance cavities, thereby generating reflection and interference of sound waves, reducing the sound energy radiated outward by the muffler, and achieving the purpose of muffler.

[0003] In the process of manufacturing automobile mufflers by using a muffler manufacturing device, in order to facilitate the processing of the muffler, the muffler needs to be clamped and welded by a fixture. The existing fixture used for automobile muffler welding processing cannot realize the process of automatically clamping and adjusting the muffler, resulting in the existing fixture being unable to match the automated welding device, thereby seriously affecting the processing efficiency.

[0004] Therefore, there is an urgent need to provide a muffler manufacturing device and method to solve the problems existing in the above-mentioned prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a muffler manufacturing device and method to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides a muffler manufacturing device, comprising a base plate, wherein two groups of clamping mechanisms are arranged at the top of the base plate, and the two groups of clamping mechanisms are arranged symmetrically; the clamping mechanism comprises a telescopic cylinder 1 fixedly mounted on the base plate, the top of the telescopic cylinder 1 is fixedly connected to a support plate, a push assembly is mounted on the support plate, a rotating assembly is mounted on the output end of the push assembly, a clamping head is fixedly mounted on the end of the rotating assembly, and the clamping heads of the two groups of clamping mechanisms are arranged oppositely; a locking assembly is mounted on the support plate, and the locking assembly is used to lock and fix the rotating assembly;

[0007] It also includes a controller, and the telescopic cylinder 1, the push assembly, the rotating assembly and the locking assembly are all electrically connected to the controller.

[0008] Preferably, the push assembly includes a slide rail fixedly mounted on the support plate, a mounting plate 1 is slidably connected to the slide rail, an end of the slide rail away from the clamping head is fixedly connected to a telescopic cylinder 2, an output end of the telescopic cylinder 2 is fixedly connected to the mounting plate 1, the rotating assembly is mounted on a side of the mounting plate 1 away from the telescopic cylinder 2, and the telescopic cylinder 2 is electrically connected to the controller.

[0009] Preferably, the rotating assembly includes a motor fixedly mounted on the mounting plate, the motor being electrically connected to the controller; a rotating shaft is fixedly connected to the output shaft of the motor, the rotating shaft being arranged parallel to the slide rail; the clamping head is fixedly mounted at the end of the rotating shaft, and the locking assembly is used to lock and fix the rotating shaft.

[0010] Preferably, the rotating assembly also includes a mounting plate 2 fixedly mounted on the support plate, the rotating shaft passes through the mounting plate 2 and slidingly cooperates with the mounting plate 2; the mounting plate 2 is rotatably connected to a gear ring on a side close to the motor; a guide bar is fixedly connected to the rotating shaft, a gear 1 is slidably sleeved on the rotating shaft, the gear 1 is limitedly slidably cooperated with the rotating shaft through the guide bar, and the gear 1 is meshed with the inner teeth of the gear ring; a plurality of limit blocks are fixedly connected to the end of the gear ring away from the mounting plate 2, and the gear 1 is limited in the gear ring by the limit blocks.

[0011] Preferably, the locking assembly includes a mounting plate three fixedly mounted on the top of the mounting plate two, a telescopic cylinder three is fixedly connected to the mounting plate three, and the telescopic cylinder three is electrically connected to the controller; a rack is fixedly connected to the output end of the telescopic cylinder three, and the rack is meshed with the external teeth of the gear ring.

[0012] Preferably, a counter is fixedly connected to one side of the mounting plate 2 close to the gear ring, and the counter is electrically connected to the controller; a gear 2 is fixedly connected to the input end of the counter, and the gear 2 meshes with the outer teeth of the gear ring, and the gear 2 meshes with the rack.

[0013] Preferably, a guide plate is fixedly connected to the base plate, a countersunk long hole is opened in the middle of the guide plate in the vertical direction, the rotating shaft passes through the guide plate through the countersunk long hole, and the second mounting plate is slidably connected in the countersunk long hole.

[0014] Preferably, a spring is sleeved on one end of the rotating shaft close to the clamping head, and two ends of the spring are respectively in contact with the clamping head and the mounting plate.

[0015] Preferably, the clamping surface of the clamping head is provided with a protective layer.

[0016] A muffler manufacturing method, using the above-mentioned muffler manufacturing device, specifically comprises the following steps:

[0017] S1. Pre-treat the two muffler parts to be processed to remove oil stains and rust on the processed surfaces;

[0018] S2, docking the two pre-treated muffler parts, adjusting the distance between the two clamping heads, and fixing the two docked muffler parts using the two clamping heads;

[0019] S3. According to the processing requirements, the two clamping heads are synchronously driven by the rotating assembly, and after they are rotated to a specified angle, the position of the clamping heads is locked by the locking assembly;

[0020] S4. Detect the docking accuracy of two muffler parts;

[0021] S5. Perform welding operation on the muffler; wherein the welding pulse current is 80A-100A, the welding speed is 70-110mm / min, the shielding gas is 70%Ar+30%He, the gas flow rate is 20L / min, the heat input is 0.5-0.9kJ / mm, and the roundness error after welding is not more than 0.2mm;

[0022] S6: During the processing and manufacturing process, the operations of S3 to S5 are repeated according to the processing requirements.

[0023] Compared with the prior art, the present invention has the following advantages and technical effects:

[0024] The muffler manufacturing device provided by the present invention adjusts the height of the clamping head through a telescopic cylinder, adjusts the distance between the two clamping heads through the setting of a horizontal push assembly, adjusts the inclination angle of the clamping head through the setting of a rotating assembly, and can lock and fix the clamping head after the angle is adjusted through the setting of a locking assembly, thereby preventing the position of the clamping head from changing during the processing and ensuring the processing quality of the muffler. Moreover, through an external controller, the telescopic cylinder, the horizontal push assembly, the rotating assembly and the locking assembly are all connected to the controller, and the working state of the clamping head can be controlled by the controller, thereby better matching the automatic welding device for processing the muffler, which helps to improve the processing efficiency of the muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of a muffler manufacturing device of the present invention;

[0027] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0028] In the figure: 1. bottom plate; 2. telescopic cylinder 1; 3. support plate; 4. clamping head; 5. slide rail; 6. mounting plate 1; 7. telescopic cylinder 2; 8. motor; 9. rotating shaft; 10. mounting plate 2; 11. gear ring; 12. guide strip; 13. gear 1; 14. limit block; 15. mounting plate 3; 16. telescopic cylinder 3; 17. rack; 18. counter; 19. gear 2; 20. guide plate; 21. countersunk long hole; 22. spring. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0030] like Figure 1 to Figure 2 As shown, the present invention provides a muffler manufacturing device, comprising a base plate 1, two groups of clamping mechanisms are arranged at the top of the base plate 1, and the two groups of clamping mechanisms are symmetrically arranged; the clamping mechanism comprises a telescopic cylinder 2 fixedly mounted on the base plate 1, the top of the telescopic cylinder 2 is fixedly connected to a support plate 3, a push assembly is mounted on the support plate 3, a rotating assembly is mounted on the output end of the push assembly, a clamping head 4 is fixedly mounted on the end of the rotating assembly, and the clamping heads 4 of the two groups of clamping mechanisms are arranged oppositely; a locking assembly is mounted on the support plate 3, and the locking assembly is used to lock and fix the rotating assembly;

[0031] It also includes a controller, and the telescopic cylinder 1 2, the push assembly, the rotating assembly and the locking assembly are all electrically connected to the controller.

[0032] The present invention adjusts the height of the clamping head 4 by means of a telescopic cylinder 2, adjusts the distance between the two clamping heads 4 by means of a horizontal push assembly, adjusts the inclination angle of the clamping head 4 by means of a rotating assembly, and locks and fixes the clamping head 4 after the angle adjustment by means of a locking assembly, thereby preventing the position of the clamping head 4 from changing during the processing, and ensuring the processing quality of the muffler. Moreover, by means of an external controller, the telescopic cylinder 2, the horizontal push assembly, the rotating assembly, and the locking assembly are all connected to the controller, and the working state of the clamping head 4 can be controlled by the controller, thereby better matching the automatic welding device for processing the muffler.

[0033] A further optimized solution is provided. To facilitate the adjustment of the horizontal position of the clamping head 4, the push assembly includes a slide rail 5 fixedly mounted on the support plate 3, a mounting plate 6 is slidably connected to the slide rail 5, an end of the slide rail 5 away from the clamping head 4 is fixedly connected to a telescopic cylinder 2 7, an output end of the telescopic cylinder 2 7 is fixedly connected to the mounting plate 1 6, the rotating assembly is mounted on a side of the mounting plate 1 6 away from the telescopic cylinder 2 7, and the telescopic cylinder 2 7 is electrically connected to the controller.

[0034] A further optimized solution is provided. To facilitate the adjustment of the tilt angle of the clamping head 4, the rotating assembly includes a motor 8 fixedly mounted on a mounting plate 6, and the motor 8 is electrically connected to the controller; a rotating shaft 9 is fixedly connected to the output shaft of the motor 8, and the rotating shaft 9 is arranged parallel to the slide rail 5; the clamping head 4 is fixedly mounted at the end of the rotating shaft 9, and a locking assembly is used to lock and fix the rotating shaft 9.

[0035] To further optimize the solution, in order to ensure that the clamping head 4 does not vibrate during rotation, resulting in misalignment of the two docked muffler parts and affecting the processing quality, the rotating assembly also includes a mounting plate 2 10 fixedly mounted on the support plate 3, the rotating shaft 9 passes through the mounting plate 2 10, and slides with the mounting plate 2 10; the mounting plate 2 10 is rotatably connected to the side of the motor 8; a guide bar 12 is fixedly connected to the rotating shaft 9, and a gear 13 is slidably sleeved on the rotating shaft 9, the gear 13 is limited and slidably matched with the rotating shaft 9 through the guide bar 12, and the gear 13 is meshed with the inner teeth of the gear ring 11; a plurality of limit blocks 14 are fixedly connected to the end of the gear ring 11 away from the mounting plate 2 10, and the gear 13 is limited in the gear ring 11 by the limit blocks 14.

[0036] A further optimized solution, in order to facilitate locking and fixing of the rotating shaft 9, the locking assembly includes a mounting plate three 15 fixedly mounted on the top of the mounting plate two 10, and a telescopic cylinder three 16 is fixedly connected to the mounting plate three 15, and the telescopic cylinder three 16 is electrically connected to the controller; the output end of the telescopic cylinder three 16 is fixedly connected to a rack 17, and the rack 17 is meshed with the external teeth of the ring gear 11.

[0037] Further optimization scheme, in order to facilitate determination of the rotation angle of the rotating shaft 9, so as to accurately control the position of the clamping head 4, a counter 18 is fixedly connected to the side of the mounting plate 2 10 close to the gear ring 11, and the counter 18 is electrically connected to the controller; the input end of the counter 18 is fixedly connected to the gear 2 19, and the gear 2 19 meshes with the outer teeth of the gear ring 11, and the gear 2 19 meshes with the rack 17. At the same time, the setting of the gear 2 19 also helps to fix the gear ring 11 with the rack 17, so as to prevent the limited contact between the rack 17 and the gear ring 11, which does not achieve a good fixing effect.

[0038] To further optimize the solution, in order to ensure the stability of the support plate 3 during the lifting process, a guide plate 20 is fixedly connected to the base plate 1, and a countersunk long hole 21 is opened in the middle of the guide plate 20 along the vertical direction. The rotating shaft 9 passes through the guide plate 20 through the countersunk long hole 21, and the mounting plate 10 is slidably connected in the countersunk long hole 21.

[0039] To further optimize the solution, in order to ensure that the clamping head 4 can always maintain a good clamping effect during the process of clamping the muffler and prevent the clamping head 4 from clamping the muffler unstable due to the push assembly, a spring 22 is sleeved on one end of the rotating shaft 9 close to the clamping head 4, and the two ends of the spring 22 are respectively abutted against the clamping head 4 and the mounting plate 10.

[0040] According to a further optimization scheme, in order to prevent the muffler from being damaged during the clamping process, a protective layer is provided on the clamping surface of the clamping head 4 .

[0041] A muffler manufacturing method, using the above-mentioned muffler manufacturing device, specifically comprises the following steps:

[0042] S1. Pre-treat the two muffler parts to be processed to remove oil stains and rust on the processed surfaces;

[0043] S2, dock the two pre-treated muffler parts, use the telescopic cylinder 2 7 to pull the mounting plate 1 6, so that the mounting plate 1 6 moves on the slide rail 5. At this time, the motor 8, the rotating shaft 9 and the clamping head 4 on the mounting plate 1 6 will all move in the direction of the telescopic cylinder 2 7, so that the distance between the two clamping heads 4 becomes larger; in this process, the limit block 14 provided outside the gear ring 11 can prevent the gear 13 from falling out of the gear ring 11; after the distance between the two clamping heads 4 is large enough to accommodate the two docked muffler parts, the telescopic cylinder 2 7 is controlled to push the mounting plate 1 6 to slide on the slide rail 5, and the two clamping heads 4 are used to fix the two docked muffler parts;

[0044] S3. According to the processing requirements, the two clamping heads 4 are synchronously driven by the rotating assembly. During driving, the motor 8 is used to drive the rotating shaft 9 and the clamping head 4 to rotate. The rotating shaft 9 drives the gear 1 13 and the ring gear 11 to rotate through the guide bar 12. In this process, the gear 2 19 is meshed with the ring gear 11, and the gear 2 19 will also rotate, thereby driving the counter 18 to count. The rotation angle of the ring gear 11 can be calculated by the tooth ratio between the gear 2 19 and the outer teeth of the ring gear 11. When the clamping head 4 rotates to a suitable angle, the telescopic cylinder 3 16 is controlled to extend, and the telescopic cylinder 3 16 pushes the rack 17 to contact the ring gear 11 and the gear 2 19. The rack 17 is used to brake the ring gear 11 and the gear 2 19. The telescopic cylinder 3 16 keeps the rack 17 in contact with the ring gear 11 and the gear 2 19, so as to maintain the locking effect on the clamping head 4.

[0045] S4. Use a laser tracker (accuracy ±0.05mm) to detect the docking accuracy of the two muffler parts to determine whether they meet the requirements;

[0046] S5. Perform welding operations on the muffler parts that meet the requirements; wherein, the welding pulse current is 80A-100A, the welding speed is 70-110mm / min, the shielding gas is 70%Ar+30%He, the gas flow rate is 20L / min, the heat input is 0.5-0.9kJ / mm, and the roundness error after welding is not more than 0.2mm;

[0047] S6: During the processing and manufacturing process, the operations of S3 to S5 are repeated according to the processing requirements.

[0048] The above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A muffler manufacturing device, characterized in that: It comprises a base plate (1), the top of which is provided with two groups of clamping mechanisms, the two groups of clamping mechanisms being symmetrically arranged; the clamping mechanism comprises a telescopic cylinder (2) fixedly mounted on the base plate (1), the top of which is fixedly connected with a support plate (3), a horizontal push assembly being mounted on the support plate (3), a rotating assembly being mounted on the output end of the horizontal push assembly, a clamping head (4) being fixedly mounted on the end of the rotating assembly, the clamping heads (4) of the two groups of clamping mechanisms being arranged opposite to each other; a locking assembly being mounted on the support plate (3), the locking assembly being used to lock and fix the rotating assembly; It also includes a controller, and the telescopic cylinder 1 (2), the push assembly, the rotating assembly and the locking assembly are all electrically connected to the controller.

2. The muffler manufacturing device according to claim 1, characterized in that: The push assembly comprises a slide rail (5) fixedly mounted on the support plate (3), a mounting plate 1 (6) being slidably connected to the slide rail (5), a telescopic cylinder 2 (7) being fixedly connected to one end of the slide rail (5) away from the clamping head (4), an output end of the telescopic cylinder 2 (7) being fixedly connected to the mounting plate 1 (6), the rotating assembly being mounted on a side of the mounting plate 1 (6) away from the telescopic cylinder 2 (7), and the telescopic cylinder 2 (7) being electrically connected to the controller.

3. The muffler manufacturing device according to claim 2, characterized in that: The rotating assembly comprises a motor (8) fixedly mounted on the mounting plate (6), the motor (8) being electrically connected to the controller; a rotating shaft (9) being fixedly connected to the output shaft of the motor (8), the rotating shaft (9) being arranged parallel to the slide rail (5); the clamping head (4) being fixedly mounted on the end of the rotating shaft (9), the locking assembly being used to lock and fix the rotating shaft (9).

4. The muffler manufacturing device according to claim 3, characterized in that: The rotating assembly also includes a second mounting plate (10) fixedly mounted on the support plate (3), the rotating shaft (9) passing through the second mounting plate (10) and slidingly cooperating with the second mounting plate (10); the second mounting plate (10) is rotatably connected to a gear ring (11) on a side close to the motor (8); a guide bar (12) is fixedly connected to the rotating shaft (9), a gear one (13) is slidingly sleeved on the rotating shaft (9), the gear one (13) is limitedly slidably cooperating with the rotating shaft (9) through the guide bar (12), and the gear one (13) is meshed with the inner teeth of the gear ring (11); a plurality of limit blocks (14) are fixedly connected to one end of the gear ring (11) away from the second mounting plate (10), and the gear one (13) is limited in position in the gear ring (11) through the limit blocks (14).

5. The muffler manufacturing device according to claim 4, characterized in that: The locking assembly comprises a mounting plate three (15) fixedly mounted on the top of the mounting plate two (10); a telescopic cylinder three (16) is fixedly connected to the mounting plate three (15); the telescopic cylinder three (16) is electrically connected to the controller; a rack (17) is fixedly connected to the output end of the telescopic cylinder three (16); the rack (17) is meshed with the external teeth of the gear ring (11).

6. The muffler manufacturing device according to claim 5, characterized in that: A counter (18) is fixedly connected to one side of the second mounting plate (10) close to the gear ring (11), and the counter (18) is electrically connected to the controller; a second gear (19) is fixedly connected to the input end of the counter (18), and the second gear (19) meshes with the external teeth of the gear ring (11), and the second gear (19) meshes with the rack (17).

7. The muffler manufacturing device according to claim 4, characterized in that: A guide plate (20) is fixedly connected to the bottom plate (1), a countersunk long hole (21) is provided in the middle of the guide plate (20) in the vertical direction, the rotating shaft (9) passes through the countersunk long hole (21) and penetrates the guide plate (20), and the second mounting plate (10) is slidably connected in the countersunk long hole (21).

8. The muffler manufacturing device according to claim 7, characterized in that: A spring (22) is sleeved on one end of the rotating shaft (9) close to the clamping head (4), and two ends of the spring (22) are respectively in contact with the clamping head (4) and the second mounting plate (10).

9. The muffler manufacturing device according to claim 1, characterized in that: The clamping surface of the clamping head (4) is provided with a protective layer.

10. A method for manufacturing a muffler, using the muffler manufacturing device according to any one of claims 1 to 9, characterized in that: The specific steps include: S1. Pre-treat the two muffler parts to be processed to remove oil stains and rust on the processed surfaces; S2, docking the two pre-treated muffler parts, adjusting the distance between the two clamping heads (4), and fixing the two docked muffler parts using the two clamping heads (4); S3. According to the processing requirements, the two clamping heads (4) are synchronously driven by a rotating assembly, and after they are rotated to a specified angle, the position of the clamping heads (4) is locked by a locking assembly; S4. Detect the docking accuracy of two muffler parts; S5. Perform welding operation on the muffler; wherein the welding pulse current is 80A-100A, the welding speed is 70-110mm / min, the shielding gas is 70%Ar+30%He, the gas flow rate is 20L / min, the heat input is 0.5-0.9kJ / mm, and the roundness error after welding is not more than 0.2mm; S6: During the processing and manufacturing process, the operations of S3 to S5 are repeated according to the processing requirements.

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