A double-head capping machine for automobile muffler

Abstract

The present invention relates to the technical field of automobile muffler manufacturing, specifically to a double-headed capping machine for automobile mufflers, comprising a base with a cavity inside, two vertical plates symmetrically mounted on the upper end surface of the base and a support seat located between the two vertical plates, and a position correction mechanism for loading the automobile muffler shell is arranged on the support seat. An integrated operation model of fixing, position correction and docking is adopted to complete the precise docking of the cover plates at both ends of the automobile muffler, so that the muffler assembly and the cover plates at both ends are accurately straightened and loaded with the shell in a fixed state as a reference, thereby improving the assembly accuracy and quality, and the corresponding parts can always be pressed and fixed when welding the cover plate joints, and at the same time, under the multiple alignment and fixation of the welding parts, the problems of offset and deformation during welding are avoided, and the firmness and consistency of the welding are improved, thereby improving the firmness and sealing of the weld at the cover plate joint, and improving the overall structure and muffler performance of the muffler.

Description

Technical Field

[0001] The invention relates to the technical field of automobile muffler manufacturing, in particular to a double-head capping machine for automobile mufflers. Background Art

[0002] The automobile muffler is a device installed in the automobile exhaust system, which is mainly used to reduce the noise generated by the engine exhaust. The automobile muffler consists of an external shell, an internal muffler component and two end covers, wherein the internal muffler component consists of an air inlet, a muffler cavity and an air outlet. When manufacturing the automobile muffler, after the muffler component is installed on the shell, it is necessary to cap the two ends of the automobile muffler shell and weld and seal the joints to ensure that the exhaust gas inside the muffler will not leak and ensure that the automobile muffler achieves the best muffler effect.

[0003] At present, the capping process of the double ends of automobile mufflers has the following disadvantages: 1. When capping the outer shell of an automobile muffler, workers need to first pass the muffler assembly through the shell, and then pass the cover plates at both ends through the air inlet and air outlet of the muffler assembly respectively and fit the two ends of the shell. Then, workers weld the joints between the cover plate and the shell and the muffler assembly. However, when the shell, the muffler assembly and the cover plates at both ends are manually docked, the alignment accuracy of the muffler assembly, the shell and the cover plate will be affected by manual errors and reduced, making it difficult to ensure the consistency of each muffler assembly, affecting the stability of product performance and the quality control of the final product; 2. In the process of completing the assembly of the automobile muffler and welding the cover plate joints, the parts that need to be welded are not fixed, so that the welding parts will be offset due to thermal expansion or operating force, resulting in inaccurate welding position or discontinuous and uneven welds, thereby affecting the firmness and sealing of the welds at the cover plate joints, and further affecting the overall structure and muffler performance of the muffler. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a double-head capping machine for automobile muffler, which is achieved by the following specific technical means: a double-head capping machine for automobile muffler, comprising a base with a cavity inside, two left-right symmetrical vertical plates and a support seat located between the two vertical plates are fixedly installed on the upper end surface of the base, and a positioning mechanism for loading the automobile muffler shell is arranged on the support seat; the positioning mechanism includes a fixing part arranged on the support seat and used to fix the shell, a driving part is jointly arranged on the base and the fixing part, and the driving part is provided with a positioning part that cooperates with it and is used to correct the position of the muffler assembly and the two end covers with the shell as a reference.

[0005] A mounting mechanism cooperating with the positioning correction part and used for loading the silencer assembly is arranged on the left vertical plate; the mounting mechanism includes a rotating part arranged on the left vertical plate, a positioning part for aligning and pressing the silencer assembly is arranged on the rotating part, and a clamping part for internally supporting and fixing the two ends of the silencer assembly is arranged on the positioning part.

[0006] A docking mechanism is provided on the right side vertical plate, which cooperates with the correction part and is used for loading the two end covers; the docking mechanism includes a docking part which is provided on the right side vertical plate and is used to align the shell and dock the two end covers with the shell before the fixing part fixes the shell, and a limiting part and a loading part which cooperates with the limiting part to adsorb and fix the two end covers.

[0007] As a preferred technical solution of the present invention, the fixed part includes a bearing seat, a supporting vertical plate, a connecting platform, an electric push rod and a downward pressure block. The upper end of the support seat is fixedly installed with a bearing seat for supporting the shell, and the upper end surface of the bearing seat is fixedly installed with a left-right symmetrical supporting vertical plate, and the upper ends of the left-right symmetrical supporting vertical plates are jointly fixedly installed with a connecting platform, and an electric push rod with a telescopic end passing through its lower end is fixedly installed on the connecting platform, and a downward pressure block cooperating with the bearing seat is fixedly installed on the telescopic end of the electric push rod.

[0008] As a preferred technical solution of the present invention, the driving part includes a first bidirectional screw, a first motor, a screw sleeve and a connecting rod. The upper end surface of the base is penetrated by a bearing and is provided with a first bidirectional screw that is symmetrical on the left and right and is respectively located on the left and right sides of the bearing seat. The lower end of the first bidirectional screw is fixedly sleeved with a pulley, and the pulleys are connected by a belt transmission. A first motor with an output end fixedly connected to one of the first bidirectional screws is fixedly installed in the base. The first bidirectional screw is threadedly connected with a screw sleeve that is symmetrical in upper and lower directions, and the screw sleeve is rotatably connected to the connecting rod on one side close to the bearing seat.

[0009] As a preferred technical solution of the present invention, the correction part includes a transmission rod, a correction rod, a sliding groove, a fixed seat and a limiting cross bar. The connecting rods are fixedly installed with front-and-rear symmetrical transmission rods, the transmission rod is fixedly installed with a correction rod at one end away from the corresponding connecting rod, and a sliding groove is provided through the transmission rod. The left-right symmetrical supporting vertical plates are fixedly installed with fixed seats on the sides away from each other, and fixed seats are also fixedly installed at the left and right ends of the supporting seats. The fixed seats on the left-and-right symmetrical supporting vertical plates correspond one-to-one to the fixed seats on the supporting seats, and a limiting cross bar is fixedly installed in the fixed seat and movably passes through the corresponding front-and-rear symmetrical sliding grooves.

[0010] As a preferred technical solution of the present invention, the rotating part includes a second motor, an electric slide rail and a first load-carrying cross block. A side wall of the left vertical plate close to the support seat is hinged with the electric slide rail through a first shaft rod. A second motor with an output end fixedly connected to the first shaft rod is fixedly installed on the left vertical plate, and the first load-carrying cross block is fixedly installed on the movable end of the electric slide rail.

[0011] As a preferred technical solution of the present invention, the alignment part includes a first slide, a second bidirectional screw, a third motor, a first supporting slide plate and a supporting tube. A first slide is opened on a side wall of the first loading cross block away from the electric slide rail. A second bidirectional screw located in the first slide is installed in the first loading cross block through a bearing. A third motor with an output end fixedly connected to the second bidirectional screw rod is fixedly installed on the first loading cross block. A first supporting slide plate that is symmetrical front and back and threadedly connected to the second bidirectional screw rod is slidably installed in the first slide. A support tube is fixedly installed on the end of the first support slide plate located on the front side away from the first loading cross block.

[0012] As a preferred technical solution of the present invention, the clamping part includes a clamping bin, a second slideway, a screw, a pressure slider and a fourth motor. The side of the rear side where the first supporting slide plate and the supporting tube are close to each other is equipped with a clamping bin through a bearing. The side walls of the two clamping bins close to each other are penetrated by a plurality of second slideways in a circular array. A screw corresponding to the second slideway is rotatably installed in the clamping bin through a bearing seat. A pressure slider threadedly connected to the corresponding screw is slidably installed in the second slideway. The ends of the screws close to each other in the same clamping bin are fixedly sleeved with a first bevel gear. The fourth motor is fixedly installed in the clamping bin. The output end of the fourth motor is fixedly sleeved with a second bevel gear meshing with multiple first bevel gears at the same time.

[0013] As a preferred technical solution of the present invention, the docking part includes a second loading cross block, a fifth motor, a sixth motor and a second supporting slide plate. A side wall of the right vertical plate close to the support seat is hinged with the second loading cross block through a second shaft rod. A fifth motor with an output end fixedly connected to the second shaft rod is fixedly installed on the right vertical plate. A third slide is provided on a side wall of the second loading cross block close to the support seat, and a third bidirectional screw rod is rotatably installed in the third slide. A sixth motor with an output end fixedly connected to the third bidirectional screw rod is fixedly installed on the second loading cross block. A second supporting slide plate that is symmetrical front and back and threadedly connected to the third bidirectional screw rod is slidably installed in the third slide.

[0014] As a preferred technical solution of the present invention, the limiting part includes a limiting plate and an arc plate, a front-and-back symmetrical limiting plate is fixedly installed on the second loading cross block, the front-and-back symmetrical second supporting slide plate is located between the front-and-back symmetrical limiting plates, the limiting plate is composed of a rectangular plate and an elliptical plate connected to the left end of the rectangular plate, and one side wall of the front-and-back symmetrical elliptical plates close to each other is fixedly installed with an upper-and-lower symmetrical arc plate.

[0015] As a preferred technical solution of the present invention, the loading part includes a support arm, a pressure disc, a carrying rod and a suction cup. The support arm is installed through a bearing on the side wall of the left end of the second supporting slide that is symmetrical front and rear, and is close to each other. The support arm is fixedly installed with a pressure disc for squeezing the silencer assembly on the side wall away from the corresponding second supporting slide. The support arm is fixedly installed with a carrying rod that is symmetrical about the pressure disc and located between the corresponding upper and lower symmetrical arc plates, and a suction cup is fixedly installed on the end of the carrying rod away from the corresponding support arm.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The double-head capping machine for automobile muffler, through the coordinated use of the set correction mechanism, the installation mechanism and the docking mechanism, adopts a fixing, correction and docking integrated operation model to complete the precise docking of the cover plates at both ends of the automobile muffler, and realizes the precise straightening and loading of the muffler assembly and the cover plates at both ends with reference to the shell in a fixed state, thereby ensuring the correct alignment and positioning of each component, improving the assembly accuracy and quality, and always pressing and fixing the corresponding parts when welding the cover plate joints. At the same time, under the multiple alignment and fixation of the welding parts, the problems of offset and deformation during welding are avoided, and the firmness and consistency of the welding are improved, thereby improving the firmness and sealing of the welds at the cover plate joints, and improving the overall structure and sound-absorbing performance of the muffler.

[0017] 2. The double-head capping machine for automobile muffler, through the coordinated use of the set position correction mechanism and the docking mechanism, synchronously presses the front and rear ends of the muffler shell to correct its position, and fixes the shell after the correction is completed, thereby providing a precise reference position for the installation of subsequent muffler components and the two end covers, reducing the difficulty of subsequent assembly, ensuring product consistency, and improving the overall production quality of automobile mufflers.

[0018] 3. The automobile muffler double-head capping machine, through the coordinated use of the set correction mechanism and the installation mechanism, uses the shell in a fixed state as a reference to straighten and load the muffler component, effectively avoiding the misalignment of the two, thereby improving the assembly accuracy and quality, and ensuring that the muffler component is installed in the correct position. At the same time, during the assembly process, the risk of movement and stress deformation of the muffler component is reduced, and the structural integrity and functional stability of the muffler are maintained.

[0019] 4. The automobile muffler double-head capping machine, through the coordinated use of the installed installation mechanism and the docking mechanism, uses the shell in a fixed state as a reference to straighten and load the cover plates at both ends, so that the cover plates at both ends can be accurately aligned and positioned to ensure that the connection between the cover plate and the shell is tight and uniform, and squeezes the air inlet and outlet of the muffler assembly while loading the cover plate to ensure that the muffler assembly is in the correct position and correctly aligned with the connection with the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure when the two end covers are assembled according to the present invention.

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the silencing assembly when assembled according to the present invention.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the correction mechanism of the present invention.

[0023] Figure 4 It is a partial structural schematic diagram of the driving part of the present invention.

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the mounting mechanism of the present invention.

[0025] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0026] Figure 7 It is a partial three-dimensional structural schematic diagram of the docking mechanism of the present invention.

[0027] Figure 8 Schematic diagram of the assembly changes of the automobile muffler.

[0028] In the figure: 1, base; 2, support seat; 3, vertical plate; 4, correction mechanism; 41, fixed part; 411, bearing seat; 412, support vertical plate; 413, connecting platform; 414, electric push rod; 415, lower pressure block; 42, driving part; 421, first bidirectional screw rod; 422, first motor; 423, screw sleeve; 424, connecting rod; 43, correction part; 431, transmission rod; 432, correction rod; 433, slide groove; 434, fixed seat; 435, limit cross bar; 5, installation mechanism; 51, rotating part; 511, second motor; 512, electric slide rail; 513, first load cross block; 52, alignment part ;521, first slide;522, second bidirectional screw;523, third motor;524, first supporting slide;525, supporting tube;53, clamping part;531, clamping bin;532, second slide;533, screw;534, pressing slide;535, fourth motor;6, docking mechanism;61, docking part;611, second loading cross block;612, fifth motor;613, sixth motor;614, second supporting slide;62, limiting part;621, limiting plate;622, arc plate;63, loading part;631, supporting arm;632, pressing disc;633, loading rod;634, suction cup. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1 and Figure 2 A double-head capping machine for automobile muffler comprises a base 1 with a cavity inside, two left-right symmetrical vertical plates 3 and a support seat 2 located between the two vertical plates 3 are fixedly mounted on the upper end surface of the base 1, and a position correction mechanism 4 for loading the automobile muffler shell is arranged on the support seat 2; the position correction mechanism 4 comprises a fixing part 41 which is arranged on the support seat 2 and used to fix the shell, a driving part 42 is jointly arranged on the base 1 and the fixing part 41, and a position correction part 43 which cooperates with the driving part 42 and is used to correct the position of the muffler assembly and the two end covers with reference to the shell is arranged on the driving part 42.

[0031] See also Figure 1 and Figure 2A mounting mechanism 5 cooperating with the positioning portion 43 and used for loading the silencer assembly is provided on the left side vertical plate 3; the mounting mechanism 5 includes a rotating portion 51 arranged on the left side vertical plate 3, a positioning portion 52 for positioning and pressing the silencer assembly is provided on the rotating portion 51, and a clamping portion 53 for internally supporting and fixing the two ends of the silencer assembly is provided on the positioning portion 52.

[0032] See also Figure 1 and Figure 2 A docking mechanism 6 is provided on the right side vertical plate 3, which cooperates with the correction part 43 and is used to load the two end covers; the docking mechanism 6 includes a docking part 61 provided on the right side vertical plate 3 and is used to align the shell and dock the two end covers with the shell before the fixing part 41 fixes the shell, and a limiting part 62 and a loading part 63 that cooperates with the limiting part 62 to adsorb and fix the two end covers are provided on the docking part 61.

[0033] See also Figure 1 , Figure 2 and Figure 3 The fixing part 41 includes a bearing seat 411, a supporting vertical plate 412, a connecting platform 413, an electric push rod 414 and a pressing block 415. A bearing seat 411 for bearing the shell is fixedly installed on the upper end of the supporting seat 2. A left-right symmetrical supporting vertical plate 412 is fixedly installed on the upper end surface of the bearing seat 411. A connecting platform 413 is fixedly installed on the upper ends of the left-right symmetrical supporting vertical plates 412. An electric push rod 414 with a telescopic end passing through its lower end is fixedly installed on the connecting platform 413. A pressing block 415 cooperating with the bearing seat 411 is fixedly installed on the telescopic end of the electric push rod 414. Limiting grooves matching the shape of the shell are opened on the bearing seat 411 and the pressing block 415.

[0034] See also Figure 1 and Figure 7 The docking part 61 includes a second loading cross block 611, a fifth motor 612, a sixth motor 613 and a second supporting slide plate 614. A side wall of the right vertical plate 3 close to the support seat 2 is hinged with the second loading cross block 611 through a second shaft rod. A fifth motor 612, whose output end is fixedly connected to the second shaft rod, is fixedly installed on the right vertical plate 3. A third slide is provided on a side wall of the second loading cross block 611 close to the support seat 2. A third bidirectional screw rod is rotatably installed in the third slide. A sixth motor 613, whose output end is fixedly connected to the third bidirectional screw rod, is fixedly installed on the second loading cross block 611. A second supporting slide plate 614, which is symmetrical front and back and threadedly connected to the third bidirectional screw rod, is slidably installed in the third slide.

[0035] During the specific work, when the silencer needs to be capped, the worker first places the shell on the supporting seat 411, and then starts the electric push rod 414 to drive the lower pressure block 415 to descend, and when the lower pressure block 415 is not in contact with the supporting seat 411 and the cooperation between the two can limit the up and down movement of the shell, the electric push rod 414 is stopped. At this time, the fifth motor 612 is in an unstarted state, so that the second load cross block 611 is in a horizontal state with the second supporting slide plate 614, and then the sixth motor 613 is started to rotate with the third bidirectional screw rod, thereby driving the second supporting slide plates 614 on both sides to approach synchronously until the second supporting slide plates 614 synchronously press the front and rear ends of the shell. At this time, the sixth motor 613 is stopped, thereby completing the correction of the position of the silencer shell, and then continuing to start the electric push rod 414 to make the lower pressure block 415 descend and fit the supporting seat 411, thereby fixing the shell on the supporting seat 411, providing a precise reference position for the subsequent installation of the silencer assembly and the cover plates at both ends.

[0036] See also Figure 1 , Figure 2 and Figure 5 The rotating part 51 includes a second motor 511, an electric slide rail 512 and a first load-carrying cross block 513. A side wall of the left vertical plate 3 close to the support seat 2 is hinged with the electric slide rail 512 through a first shaft rod. A second motor 511, whose output end is fixedly connected to the first shaft rod, is fixedly installed on the left vertical plate 3. The moving end of the electric slide rail 512 is fixedly installed with the first load-carrying cross block 513.

[0037] See also Figure 1 , Figure 2 and Figure 5 The alignment part 52 includes a first slide 521, a second bidirectional screw rod 522, a third motor 523, a first supporting slide plate 524 and a supporting tube 525. A first slide 521 is provided on a side wall of the first loading cross block 513 away from the electric slide rail 512. A second bidirectional screw rod 522 located in the first slide 521 is installed in the first loading cross block 513 through a bearing. A third motor 523 whose output end is fixedly connected to the second bidirectional screw rod 522 is fixedly installed on the first loading cross block 513. A first supporting slide plate 524 which is symmetrical front and rear and threadedly connected to the second bidirectional screw rod 522 is slidably installed in the first slide 521. A supporting tube 525 is fixedly installed on one end of the first supporting slide plate 524 located on the front side away from the first loading cross block 513.

[0038] See also Figure 1 , Figure 2 , Figure 5 and Figure 6The clamping portion 53 includes a clamping bin 531, a second slideway 532, a screw 533, a pressing slider 534 and a fourth motor 535. The side where the rear first supporting slide plate 524 and the supporting cylinder 525 are close to each other is equipped with a clamping bin 531 through a bearing. The side walls where the two clamping bins 531 are close to each other are penetrated by a plurality of second slideways 532 in a circular array. The screws 533 corresponding to the second slideways 532 are rotatably installed in the clamping bin 531 through a bearing seat. The pressing slider 534 threadedly connected to the corresponding screw 533 is slidably installed in the second slideway 532. The ends of the screws 533 in the same clamping bin 531 close to each other are fixedly sleeved with a first bevel gear. The fourth motor 535 is fixedly installed in the clamping bin 531. The output end of the fourth motor 535 is fixedly sleeved with a second bevel gear meshing with multiple first bevel gears at the same time.

[0039] During specific operation, after the fixing part 41 and the docking part 61 cooperate to fix the shell, the sixth motor 613 is started in reverse to make the second support slides 614 on both sides move away from the shell, and then the fifth motor 612 is started to rotate the second cargo cross block 611 through the second shaft rod, so that the second cargo cross block 611 rotates the second support slide 614 upward to a vertical state, and then the second motor 511 is started to rotate the first shaft rod, thereby rotating the electric slide rail 512 downward until the first support slide 524 is in a horizontal state.

[0040] Then, the electric slide rail 512 is started to move the first loading cross block 513 backward, while the third motor 523 is in an unstarted state, and the two first support slides 524 are on the front and rear sides of the first slide rail 521. At this time, the electric slide rail 512 will carry the support tube 525 on the front first support slide 524 through the shell, and after the support tube 525 passes through the shell for a certain length, the silencer assembly is placed between the clamping bins 531 on both sides. At this time, the electric slide rail 512 can be stopped, and the third motor 523 can be started to carry the first support slides 524 on both sides synchronously through the second bidirectional screw rod 522 until the clamping bins 531 on both sides press the air inlet and air outlet of the silencer assembly, and then the third motor 523 is stopped.

[0041] Then, the fourth motor 535 on both sides is started to rotate synchronously with the screw 533 through the cooperation of multiple first bevel gears and second bevel gears, thereby causing the pressing slider 534 to expand to the surroundings synchronously until the pressing slider 534 internally supports and presses the air inlet and outlet of the silencer assembly to fix the silencer assembly, thereby completing the fixation of the silencer assembly.

[0042] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The driving part 42 includes a first bidirectional screw rod 421, a first motor 422, a screw sleeve 423 and a connecting rod 424. The upper end surface of the base 1 is penetrated by a bearing and is installed with a left-right symmetrical first bidirectional screw rod 421 located on the left and right sides of the bearing seat 411 respectively. The lower end of the first bidirectional screw rod 421 is fixedly sleeved with a pulley, and the pulleys are connected by a belt transmission. A first motor 422 whose output end is fixedly connected to one of the first bidirectional screw rods 421 is fixedly installed in the base 1. The first bidirectional screw rod 421 is threadedly connected with a screw sleeve 423 that is symmetrical up and down. The screw sleeve 423 is rotatably connected to the connecting rod 424 on one side close to the bearing seat 411.

[0043] See also Figure 1 and Figure 3 The correcting part 43 includes a transmission rod 431, a correction rod 432, a slide groove 433, a fixed seat 434 and a limiting cross bar 435. The connecting rods 424 are fixedly installed with front-to-back symmetrical transmission rods 431, and the end of the transmission rod 431 away from the corresponding connecting rod 424 is fixedly installed with a correction rod 432. The transmission rod 431 is penetrated with a slide groove 433. The sides of the left-right symmetrical support vertical plates 412 away from each other are fixedly installed with fixed seats 434, and the left and right ends of the support seat 2 are also fixedly installed with fixed seats 434. The fixed seats 434 on the left-right symmetrical support vertical plates 412 correspond one to one with the fixed seats 434 on the support seat 2, and a limiting cross bar 435 that movably penetrates the corresponding front-to-back symmetrical slide grooves 433 is fixedly installed in the fixed seat 434.

[0044] During specific operation, after the installation mechanism 5 completes the fixing of the silencer assembly, the electric slide rail 512 is started to move it forward with the fixed silencer assembly, and the electric slide rail 512 is stopped when it is close to the rear end of the shell. At this time, the first motor 422 can be started to rotate synchronously with the first bidirectional screw rod 421 through the cooperation of the pulley and the belt, thereby moving the two screw sleeves 423 on the same first bidirectional screw rod 421 synchronously in opposite directions. Taking the screw sleeve 423 at the upper end of the right side as an example, at this time, the screw sleeve 423 will pass The connecting rod 424 moves the transmission rod 431 upward, and the other end of the transmission rod 431 (i.e., the end connected to the positioning rod 432) is lowered with the cooperation of the slide groove 433 on the transmission rod 431 and the limiting cross bar 435 on the corresponding supporting vertical plate 412, so that the positioning rod 432 is attached to the shell. At this time, the four positioning rods 432 attached to the shell will correct the position of the silencer assembly entering the shell, so as to straighten the silencer assembly and load it with reference to the shell in a fixed state, so as to effectively avoid misalignment and deviation between the two.

[0045] At this time, continue to start the electric slide rail 512 to carry the silencer assembly into the shell, and after the silencer assembly is placed inside the shell, start the fourth motor 535 in reverse to release the fixation of the silencer assembly, and at the same time start the third motor 523 in reverse to make the first support slides 524 on both sides move away from the silencer assembly synchronously, and after resetting the first support slide 524, start the second motor 511 in reverse to adjust the first support slide 524 to a vertical state.

[0046] See also Figure 1 and Figure 7 The limiting portion 62 includes a limiting plate 621 and an arc plate 622. The second loading cross block 611 is fixedly provided with a front-to-back symmetrical limiting plate 621. The front-to-back symmetrical second supporting slide plate 614 is located between the front-to-back symmetrical limiting plates 621. The limiting plate 621 is composed of a rectangular plate and an elliptical plate connected to the left end of the rectangular plate. The side walls of the front-to-back symmetrical elliptical plates close to each other are fixedly provided with upper and lower symmetrical arc plates 622.

[0047] See also Figure 1 and Figure 7 The loading part 63 includes a support arm 631, a pressure disc 632, a loading rod 633 and a suction cup 634. The support arm 631 is installed on the side wall close to each other at the left ends of the front and rear symmetrical second supporting slides 614 through a bearing. The support arm 631 is fixedly installed with a pressure disc 632 for squeezing the silencer component on the side wall away from the corresponding second supporting slide 614. The support arm 631 is fixedly installed with a loading rod 633 that is symmetrical about the pressure disc 632 and located between the corresponding upper and lower symmetrical arc plates 622. The suction cup 634 is fixedly installed on the end of the loading rod 633 away from the corresponding support arm 631.

[0048] During the specific work, after the installation mechanism 5 cooperates with the correction mechanism 4 to complete the loading of the silencer assembly, the fifth motor 612 is started again to adjust the second loading cross block 611 back to a horizontal state. At this time, the worker places the cover plates on both sides in the upper and lower symmetrical arc plates 622 to pre-position the cover plates, thereby ensuring that the suction cups 634 are adsorbed at the corresponding positions of the cover plates. Then, the suction cups 634 connected to the external electric vacuum pump work to adsorb and fix the cover plates, and after fixation, the sixth motor 613 is started so that the second supporting slides 614 on both sides synchronously bring the cover plates closer to the shell. Before the cover plates have not yet touched the shell, the sixth motor 613 is driven to move the cover plates closer to the shell. The part 42 and the correction part 43 cooperate to bring the four correction rods 432 close to the shell at the same time, and press the annular wall of the cover plate in the process of approaching until the four correction rods 432 press against the surface of the shell, thereby completing the limit calibration of the front and rear end covers at the same time, so as to calibrate the positions of the covers at both ends with reference to the shell in a fixed state, and then continue to start the sixth motor 613 until the covers at both ends are aligned with the shell, and in the process of alignment, the pressing discs 632 on both sides will synchronously squeeze the air inlet and air outlet of the silencer assembly respectively, so as to ensure that the silencer assembly is in the correct position and accurately aligned with the connection with the cover plate.

[0049] Then the first motor 422 can be started in reverse to move the correction rod 432 away from the shell. At this time, the connection between the cover plate and the shell and the silencer assembly can be welded by an external laser welding machine fixedly installed on the base 1. During the welding process, the docking mechanism 6 always presses the cover plates and silencer assemblies on both sides, thereby reducing the offset and deformation during welding and improving the firmness and consistency of the welding. After the welding is completed, the fixation of the cover plates and silencer assemblies on both sides by the docking mechanism 6 and the fixation of the shell by the fixing part 41 are released. At this time, the car muffler after the capping is taken out, and the next car muffler can be capped.

[0050] See also Figure 1-Figure 8 Working principle: When the silencer needs to be capped, the worker first places the shell on the supporting seat 411, and fixes the shell on the supporting seat 411 through the cooperation of the fixing part 41 and the docking part 61, and then starts the sixth motor 613 in reverse to make the second supporting slides 614 on both sides away from the shell, and starts the fifth motor 612 to rotate the second supporting slide 614 upward to a vertical state, and then starts the second motor 511 to put the first supporting slide 524 in a horizontal state.

[0051] Then, the electric slide rail 512 is started to move the first loading cross block 513 backward, and the support tube 525 of the front first supporting slide plate 524 passes through the shell. Then, the silencer assembly is placed between the clamping bins 531 on both sides, and the third motor 523 is started to press the silencer assembly through the alignment part 52, and the inner support of the silencer assembly is pressed and fixed by the clamping part 53. Then, the electric slide rail 512 is started, and the loading of the silencer assembly is completed through the cooperation of the installation mechanism 5 and the correction mechanism 4. Then, the fourth motor 535 is started in reverse to release the fixation of the silencer assembly, and at the same time, the third motor 523 is started in reverse to reset the first supporting slide plate 524. Then, the second motor 511 is started in reverse to adjust the first supporting slide plate 524 to a vertical state.

[0052] Then the fifth motor 612 is started again to adjust the second loading cross block 611 back to a horizontal state. At this time, the worker places the cover plates on both sides in the arc plate 622, fixes the cover plates by adsorption through the loading part 63, and brings the cover plates closer to the shell through the docking part 61. Before they touch the shell, the positions of the cover plates at both ends are calibrated through the cooperation of the driving part 42 and the positioning part 43, and then the sixth motor 613 can be started again until the cover plates at both ends are aligned with the shell.

[0053] Then the first motor 422 can be started in reverse to move the correction rod 432 away from the shell. At this time, the connection between the cover plate, the shell and the silencer assembly can be welded by an external laser welding machine fixedly installed on the base 1. After the welding is completed, the fixation of the cover plate and the silencer assembly on both sides by the docking mechanism 6 and the fixation of the shell by the fixing part 41 are released. At this time, the car muffler after the capping is completed is taken out, and the next car muffler can be capped.

[0054] 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 double-head capping machine for automobile mufflers, comprising a base (1) with a cavity inside, characterized in that: The upper end surface of the base (1) is fixedly mounted with two left-right symmetrical vertical plates (3) and a support seat (2) located between the two vertical plates (3); the support seat (2) is provided with a position correction mechanism (4) for loading the automobile muffler housing; The position correction mechanism (4) comprises a fixing portion (41) arranged on the support seat (2) and used to fix the shell, a driving portion (42) is arranged on the base (1) and the fixing portion (41), and a position correction portion (43) is arranged on the driving portion (42) and cooperates with the driving portion (42) and is used to correct the position of the silencer assembly and the two end covers with reference to the shell; The left vertical plate (3) is provided with a mounting mechanism (5) which cooperates with the position correction portion (43) and is used to load the silencer component; The mounting mechanism (5) comprises a rotating part (51) arranged on the left vertical plate (3), the rotating part (51) is provided with an alignment part (52) for implementing alignment and pressing on the silencer component, and the alignment part (52) is provided with a clamping part (53) for implementing internal support and fixing of two ends of the silencer component; The right side vertical plate (3) is provided with a docking mechanism (6) which cooperates with the position correction part (43) and is used to load the cover plates at both ends; The docking mechanism (6) comprises a docking portion (61) arranged on the right side vertical plate (3) and used for aligning the shell and docking the two end covers with the shell before the fixing portion (41) fixes the shell, and a limiting portion (62) and a loading portion (63) cooperating with the limiting portion (62) to adsorb and fix the two end covers are arranged on the docking portion (61); The driving part (42) comprises a first bidirectional screw (421), a first motor (422), a screw sleeve (423) and a connecting rod (424); the upper end surface of the base (1) is penetrated by a bearing and is provided with a first bidirectional screw (421) which is symmetrical on both sides and is respectively located on the left and right sides of the bearing seat (411); a belt pulley is fixedly sleeved at the lower end of the first bidirectional screw (421); the belt pulleys are connected by a belt transmission; a first motor (422) whose output end is fixedly connected to one of the first bidirectional screws (421) is fixedly installed in the base (1); a screw sleeve (423) which is symmetrical on both sides is threadedly connected to the first bidirectional screw (421); and a connecting rod (424) is rotatably connected to the side of the screw sleeve (423) close to the bearing seat (411); The correction part (43) comprises a transmission rod (431), a correction rod (432), a slide groove (433), a fixed seat (434) and a limiting cross bar (435); the connecting rod (424) is fixedly installed with a front-to-back symmetrical transmission rod (431); the end of the transmission rod (431) away from the corresponding connecting rod (424) is fixedly installed with a correction rod (432); the transmission rod (431) is provided with a slide groove (433) running through it; the left-right symmetrical support vertical plates (412) are fixedly installed with a fixed seat (434) on the sides away from each other; the left and right ends of the support seat (2) are also fixedly installed with a fixed seat (434); the fixed seat (434) on the left-right symmetrical support vertical plates (412) corresponds to the fixed seat (434) on the support seat (2) one by one; the fixed seat (434) is fixedly installed with a limiting cross bar (435) that movably runs through the corresponding front-to-back symmetrical slide groove (433); The rotating part (51) comprises a second motor (511), an electric slide rail (512) and a first load-carrying horizontal block (513); a side wall of the left vertical plate (3) close to the support seat (2) is hingedly connected with the electric slide rail (512) via a first shaft rod; a second motor (511) whose output end is fixedly connected to the first shaft rod is fixedly installed on the left vertical plate (3); and a first load-carrying horizontal block (513) is fixedly installed on the movable end of the electric slide rail (512); The alignment part (52) comprises a first slideway (521), a second bidirectional screw rod (522), a third motor (523), a first support slide plate (524) and a support tube (525); a first slideway (521) is provided on a side wall of the first loading horizontal block (513) away from the electric slide rail (512); a second bidirectional screw rod (522) located in the first slideway (521) is installed in the first loading horizontal block (513) through a bearing; a third motor (523) whose output end is fixedly connected to the second bidirectional screw rod (522) is fixedly installed on the first loading horizontal block (513); a first support slide plate (524) which is symmetrical in front and back and threadedly connected to the second bidirectional screw rod (522) is slidably installed in the first slideway (521); a support tube (525) is fixedly installed on one end of the first support slide plate (524) located on the front side away from the first loading horizontal block (513); The clamping portion (53) includes a clamping bin (531), a second slideway (532), a screw rod (533), a pressing slider (534) and a fourth motor (535). The first supporting slide plate (524) and the supporting cylinder (525) on the rear side are both provided with a clamping bin (531) via a bearing on the side where the first supporting slide plate (524) and the supporting cylinder (525) are close to each other. A plurality of second slideways (532) are provided through the side walls where the two clamping bins (531) are close to each other in a circular array. The clamping bin (531) is rotated by a bearing seat arranged inside the clamping bin (531). Screw rods (533) corresponding to the second slideways (532) are installed one by one, and a pressing slider (534) threadedly connected to the corresponding screw rods (533) is slidably installed in the second slideway (532). The ends of the screw rods (533) close to each other in the same clamping bin (531) are fixedly sleeved with a first bevel gear, and a fourth motor (535) is fixedly installed in the clamping bin (531). The output end of the fourth motor (535) is fixedly sleeved with a second bevel gear that is meshed with multiple first bevel gears at the same time. The docking portion (61) comprises a second load-carrying cross block (611), a fifth motor (612), a sixth motor (613) and a second supporting slide plate (614); a side wall of the right vertical plate (3) close to the supporting seat (2) is hingedly connected with the second load-carrying cross block (611) through a second shaft rod; a fifth motor (612) whose output end is fixedly connected to the second shaft rod is fixedly installed on the right vertical plate (3); a third slideway is provided on a side wall of the second load-carrying cross block (611) close to the supporting seat (2); a third bidirectional screw rod is rotatably installed in the third slideway; a sixth motor (613) whose output end is fixedly connected to the third bidirectional screw rod is fixedly installed on the second load-carrying cross block (611); a second supporting slide plate (614) which is symmetrical in front and back and threadedly connected to the third bidirectional screw rod is slidably installed in the third slideway; The limiting portion (62) comprises a limiting plate (621) and an arc plate (622); the second load-carrying horizontal block (611) is fixedly mounted with a front-to-back symmetrical limiting plate (621); the front-to-back symmetrical second supporting slide plate (614) is located between the front-to-back symmetrical limiting plates (621); the limiting plate (621) is composed of a rectangular plate and an elliptical plate connected to the left end of the rectangular plate; and the side walls of the front-to-back symmetrical elliptical plates close to each other are fixedly mounted with an upper-lower symmetrical arc plate (622); The loading part (63) comprises a support arm (631), a pressure disc (632), a carrying rod (633) and a suction cup (634); the support arm (631) is installed on a side wall of the left end of the second supporting slide plate (614) symmetrically front and rearward through a bearing; the support arm (631) is fixedly installed with a pressure disc (632) for squeezing the silencer component on a side wall away from the corresponding second supporting slide plate (614); the support arm (631) is fixedly installed with a carrying rod (633) symmetrically about the pressure disc (632) and located between the corresponding upper and lower symmetrical arc plates (622); and the suction cup (634) is fixedly installed on one end of the carrying rod (633) away from the corresponding support arm (631).

2. The double-head capping machine for automobile muffler according to claim 1, characterized in that: The fixing part (41) comprises a bearing seat (411), a supporting vertical plate (412), a connecting platform (413), an electric push rod (414) and a pressing block (415); a bearing seat (411) for bearing the housing is fixedly mounted on the upper end of the supporting seat (2); a left-right symmetrical supporting vertical plate (412) is fixedly mounted on the upper end surface of the bearing seat (411); a connecting platform (413) is fixedly mounted on the upper ends of the left-right symmetrical supporting vertical plates (412); an electric push rod (414) with a telescopic end passing through its lower end is fixedly mounted on the connecting platform (413); a pressing block (415) cooperating with the bearing seat (411) is fixedly mounted on the telescopic end of the electric push rod (414).

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