An assembly device for an exhaust pipe muffler

Abstract

The present invention discloses an assembly device for an exhaust pipe muffler, belonging to the technical field of welding combination. It includes a welding head controlled by a joint control device and installed on a robotic arm, and an assembly table. An assembly upright seat is arranged on the assembly table. The assembly upright seat is connected with two sets of oppositely arranged adjustment seats through a vertical adjustment component. The adjustment seats are connected with an electric slide rail through a track seat. The electric slide rail is connected with a bearing seat through an electric slider. An assembly positioning plate is arranged on the bearing seat. The assembly positioning plate is connected with a bearing positioning rod through a bidirectional driving component. The present invention designs according to the internal structure of the muffler. By setting U-shaped positioning blocks on the assembly positioning plate, the suspended positioning of the muffler partition is ensured, the distance between two muffler partitions, the perpendicularity between the muffler partition and the air pipe, and the dimensional positioning of the air pipe are ensured, so as to ensure that the welded muffler meets the quality requirements of automotive exhaust pipe sound insulation, significantly improve the production quality and welding efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of welding assembly, and in particular to an assembly device for an exhaust pipe muffler. Background Art

[0002] Exhaust pipe muffler is a device used to reduce automobile exhaust noise. Its working principles are as follows: resistive muffler, reactive muffler, impedance composite muffler, micro-perforated plate muffler, small hole muffler and active muffler; Resistant muffler is composed of tubes and chambers with sudden interface, similar to acoustic filters. Each small chamber with a tube is a mesh of the filter. The air mass in the tube is equivalent to the electrical inductance and resistance, called acoustic mass and acoustic resistance. The air volume in the small chamber is equivalent to the electrical capacitance, called acoustic compliance. The noise reduction effect is achieved by using the mutual cancellation of sound waves.

[0003] The exhaust pipe is mainly composed of two sets of partitions, air pipes connected to the partitions, and a shell (such as Figure 1 As shown on the left), due to the differences between the various structures, the current main combination method is processing by welding. However, the existing welding method is extremely inconvenient due to the mutual obstruction between the structures during welding, and the welding quality cannot be guaranteed, which also affects the welding efficiency. In addition, the current welding method cannot ensure the verticality between the pipe and the partition, which will affect the angle of the gas in the space during the later use and affect the silencing effect. Based on this, an assembly device for the exhaust pipe silencer is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose an assembly device for an exhaust pipe muffler.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An exhaust pipe silencer assembly device, comprising a welding head and an assembly table mounted on a mechanical arm and controlled by a joint control device, wherein the assembly table is provided with an assembly stand, wherein the assembly stand is connected with two sets of adjustment seats arranged opposite to each other through a vertical adjustment assembly, wherein the adjustment seat is connected with an electric slide rail through a track seat, wherein the electric slide rail is connected with a bearing seat through an electric slider, wherein an assembly positioning plate is provided on the bearing seat, wherein the assembly positioning plate is connected with a bearing positioning rod through a two-way driving assembly, wherein a U-shaped positioning block for positioning and supporting a muffler baffle is provided at the end of the bearing positioning rod;

[0007] A positioning opening is provided in the middle of the assembly positioning plate, and a split clamping tube for fixing the muffler pipe is provided on the side wall of the positioning opening, and an inner shrinkage pressing ring is connected to the outside of the split clamping tube through an electromagnetic control component;

[0008] Electric push rods are provided on both sides of the lower assembly positioning plate. The output end of the electric push rod is connected to a lifting seat, and a conical docking seat for docking with the muffler pipe is arranged on the lifting seat.

[0009] The control linkage device includes a control arm plate connected to the robotic arm. A rotating opening is arranged at the end of the control arm plate. Two remote control plates are connected to the inner wall of the rotating opening through a control assembly, and the welding head is arranged on the side wall of the remote control plate.

[0010] Preferably, the vertical adjustment assembly includes a vertical groove opened on the assembly vertical seat. A vertical adjustment motor is arranged on the assembly vertical seat. The output end of the vertical adjustment motor is fixedly connected with a vertical driving lead screw. The adjustment seat is located in the vertical groove and is threadedly connected with the vertical driving lead screw through a lead screw nut.

[0011] Preferably, the bidirectional driving assembly includes a sliding limit bar slidably arranged on the assembly positioning plate. A side bar is fixedly connected to the side wall of the sliding limit bar, and the bearing positioning rod is fixedly arranged on the side bar.

[0012] Preferably, a clamping adjustment motor is arranged on the assembly positioning plate. The output end of the clamping adjustment motor is fixedly connected with an adjustment gear, and a rack groove meshed with the adjustment gear is opened on the side bar.

[0013] Preferably, the electromagnetic control part includes an electromagnetic ring arranged on the assembly positioning plate. The retractable pressing ring is sleeved on the outer side wall of the split clamping pipe and is connected with the electromagnetic ring through a return spring. The retractable pressing ring contains magnetism and attracts with the electromagnetic ring.

[0014] Preferably, a rubber layer is arranged on the inner side wall of the split clamping pipe to increase the friction force with the muffler pipe.

[0015] Preferably, an adaptation through hole is opened on the assembly positioning plate (9), and the conical docking seat penetrates through the adaptation through hole and extends upward.

[0016] Preferably, the control assembly includes a control push rod arranged in the control arm plate. The output end of the control push rod is fixedly connected with a pushing rack. The remote control plate is connected to the inner wall of the rotating opening through a connecting rotating shaft, and a rotating meshing gear meshed with the pushing rack is fixedly connected to the outer side wall of the connecting rotating shaft.

[0017] Preferably, one side of the U-shaped positioning block is provided with an arc-shaped opening.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This solution designs the internal structure of the muffler. By setting the U-shaped positioning blocks on the assembly positioning plate, the suspended positioning of the muffler partition is ensured, ensuring that the distance between the two muffler partitions meets the standard, the perpendicularity between the muffler partition and the air pipe, and the dimensional positioning of the air pipe, ensuring that the welded muffler meets the requirements of automobile exhaust pipe silencing, significantly improving the production quality and welding efficiency.

[0020] 2. This solution precisely controls the movement of the assembly positioning plate through an electric slide rail. Thus, when welding the muffler partition and the air pipe, the air pipes on the two muffler partitions can be synchronously controlled to be on the same axis, and the synchronous welding combination is carried out through the welding head set on the control arm plate, thus significantly improving the processing efficiency while ensuring the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic three-dimensional structure diagram of an assembly device for an exhaust pipe muffler proposed by the present invention;

[0022] Figure 2 is Figure 1 an enlarged structural diagram at A in

[0023] Figure 3 is a schematic diagram of the positional relationship of the relatively arranged assembly positioning plates in an assembly device for an exhaust pipe muffler proposed by the present invention;

[0024] Figure 4 is Figure 3 an enlarged structural diagram at B in

[0025] Figure 5 is a schematic diagram of the internal structure of the assembly positioning plate in an assembly device for an exhaust pipe muffler proposed by the present invention;

[0026] Figure 6 is a schematic diagram of the connection relationship structure between the welding head and the robotic arm in an assembly device for an exhaust pipe muffler proposed by the present invention;

[0027] Figure 7 is a schematic diagram of the internal structure of the interlocking control device in an assembly device for an exhaust pipe muffler proposed by the present invention.

[0028] In the figure: 1. robotic arm; 2. welding head; 3. assembly table; 4. assembly vertical seat; 5. adjustment seat; 6. electric slide rail; 7. electric slider; 8. bearing seat; 9. assembly positioning plate; 10. bearing positioning rod; 11. U-shaped positioning block; 12. positioning through hole; 13. split clamping tube; 14. retractable pressing ring; 15. electric push rod; 16. lifting seat; 17. conical docking seat; 18. control arm plate; 19. rotating opening; 20. remote control board; 21. vertical adjustment motor; 22. vertical driving lead screw; 23. sliding limit strip; 24. side strip; 25. clamping control motor; 26. control gear; 27. electromagnetic ring; 28. control push rod; 29. pushing rack; 30. rotating meshing gear. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example, refer to Figures 1 to 7 , an assembly device for an exhaust pipe silencer, including a welding head 2 and an assembly table 3 controlled by a linkage device and installed on a robotic arm 1;

[0033] Among them, the robotic arm 1 is the control end of the welding machine, and both it and the welding head 2 are prior arts and can realize the adjustment of the welding angle, which will not be elaborated here in detail.

[0034] The control linkage device includes a control arm plate 18 connected to the robotic arm 1. A rotating opening 19 is provided at the end of the control arm plate 18. Two remote control plates 20 are connected to the inner wall of the rotating opening 19 through a control component, and the welding head 2 is arranged on the side wall of the remote control plate 20.

[0035] It should be noted that the remote control plates 20 are located within the rotating opening 19, are respectively arranged in a staggered manner on both sides, and their moving angles are relative. This can meet the synchronous welding of two different silencer partitions and silencer air pipes located at the upper and lower ends on the assembly positioning plate 9 (the positions between the newly installed partitions and air pipes are relative, so synchronous welding can be carried out), significantly improving the welding efficiency.

[0036] Furthermore, the control component includes a control push rod 28 arranged within the control arm plate 18. The output end of the control push rod 28 penetrates into the rotating opening 19 and is fixedly connected to a pushing rack 29. The remote control plate 20 is connected to the inner wall of the rotating opening 19 through a connecting rotating shaft, and a rotating meshing gear 30 meshingly connected with the pushing rack 29 is fixedly connected to the outer side wall of the connecting rotating shaft.

[0037] The effect of the above further arrangement is that the relatively arranged remote control plates 20 can move relatively under the action of the control push rod 28. That is, the control push rod 28 drives the pushing rack 29 connected to it to move back and forth. During the back-and-forth movement, it drives the rotating meshing gears 30 meshingly connected to both sides of the pushing rack 29 to rotate, thereby adjusting the angle and position to achieve the effect of synchronous adjustment control.

[0038] An assembly vertical seat 4 is arranged on the assembly table 3. The assembly vertical seat 4 is connected to two sets of relatively arranged adjustment seats 5 through a vertical adjustment component.

[0039] Furthermore, the vertical adjustment component includes a vertical slot opened in the assembly vertical seat 4. A vertical adjustment motor 21 is arranged on the assembly vertical seat 4. The output end of the vertical adjustment motor 21 is fixedly connected to a vertical driving lead screw 22. The adjustment seat 5 is located within the vertical slot and is threadedly connected to the vertical driving lead screw 22 through a lead screw nut.

[0040] Among them, the thread layers on the vertical driving lead screw 22 are two threads with opposite spiral directions arranged relatively, which can enable the adjustment seats 5 threadedly connected to them respectively to achieve synchronous relative movement.

[0041] The adjustment seat 5 is connected to an electric slide rail 6 through a track seat. The electric slide rail 6 and the electric slider 7 are electrical components, which are prior arts and will not be elaborated in detail here. The electric slide rail 6 is connected to a bearing seat 8 through the electric slider 7. An assembly positioning plate 9 is arranged on the bearing seat 8. The assembly positioning plate 9 is connected to a bearing positioning rod 10 through a bidirectional driving component.

[0042] Through the cooperation between the electric slide rail 6 and the electric slider 7, the precise adjustment of the position of the silencer installed on the assembly upright seat 4 during the welding and assembly process can be satisfied.

[0043] Further, the bidirectional drive assembly includes a sliding limit bar 23 slidably disposed on the assembly positioning plate 9. A side bar 24 is fixedly connected to the side wall of the sliding limit bar 23. A bearing positioning rod 10 is fixedly disposed on the side bar 24. A clamping control motor 25 is disposed on the assembly positioning plate 9. The output end of the clamping control motor 25 is fixedly connected to a control gear 26. A rack groove engaged with the control gear 26 is formed on the side bar 24.

[0044] A U-shaped positioning block 11 for positioning and supporting the silencer partition is disposed at the end of the bearing positioning rod 10. One side of the U-shaped positioning block 11 is provided with an arc-shaped opening, and its width is adapted to the thickness of the silencer partition to facilitate docking with the silencer partition.

[0045] It should be noted that there are two U-shaped positioning blocks 11 on the same assembly positioning plate 9, which are respectively arranged diagonally, and can clamp the silencer partition in the middle on both sides. After clamping, since the size of the U-shaped positioning block 11 is adapted to the silencer partition, this can ensure that during the clamping process of the U-shaped positioning block 11 on the silencer partition, the silencer partition is in a horizontal state, thereby ensuring the perpendicularity between the silencer partition and the air pipe during the welding process, so as to ensure the assembly effect of the silencer.

[0046] A positioning through hole 12 is formed in the middle of the assembly positioning plate 9. A split clamping tube 13 for fixing the silencer pipe is disposed on the side wall of the positioning through hole 12. A rubber layer is disposed on the inner side wall of the split clamping tube 13 to increase the friction force with the silencer pipe.

[0047] Among them, the split clamping tube 13 is in a frustum shape with a small upper part and a large lower part. The inner contraction pressing ring 14 is sleeved on the split clamping tube 13. During the downward movement, the split clamping tube 13 will be compressed inward, causing it to converge inward and clamp and fix the silencer air pipe that needs to be welded therein.

[0048] The outer part of the split clamping tube 13 is connected to the inner contraction pressing ring 14 through an electromagnetic control member; further, the electromagnetic control member includes an electromagnetic ring 27 disposed on the assembly positioning plate 9. The inner contraction pressing ring 14 is sleeved on the outer side wall of the split clamping tube 13 and is connected to the electromagnetic ring 27 through a return spring. The inner contraction pressing ring 14 contains magnetism and attracts the electromagnetic ring 27.

[0049] The function of the return spring is to realize the effect of upward springing and resetting the inner contraction pressing ring 14 during the process of power-off and demagnetization of the electromagnetic ring 27.

[0050] Electric push rods 15 are provided on both sides of the lower assembly positioning plate 9. The output end of the electric push rod 15 is connected to a lifting seat 16, and a conical docking seat 17 for docking with the muffler pipe is provided on the lifting seat 16; an adaptation through hole is opened on the assembly positioning plate 9, and the conical docking seat 17 penetrates through the adaptation through hole and extends upward.

[0051] It should be noted that there is a short air pipe completely inside the housing in the exhaust pipe muffler. Through the setting of the conical docking seat 17, when assembling and installing the air pipe here, the accurate distance between it and the exhaust pipe partition can be precisely controlled, and by sleeving the air pipe on the conical docking seat 17, the verticality of the air pipe can be ensured, guaranteeing the welding quality.

[0052] When assembling the exhaust pipe muffler of the present invention, on the production line, two muffler partitions to be welded and assembled are respectively placed at the U-shaped positioning blocks 11 on the upper and lower assembly positioning plates 9 through mechanical equipment. At this time, the clamping and regulating motor 25 arranged in the assembly positioning plate 9 is controlled to make the regulating gear 26 rotate. Two side bars 24 meshed with the regulating gear 26 through the rack groove will move relatively, so that the two U-shaped positioning blocks 11 originally on both sides move towards the middle, thereby clamping and supporting the diagonal of the muffler partition, ensuring that the muffler partition is in a horizontal state;

[0053] At this time, the muffler air pipe to be welded and assembled is inserted through the positioning through hole 12 in the middle of the assembly positioning plate 9 through mechanical equipment and docked with the docking port on the muffler partition. When the muffler air pipe is inserted to the predetermined height, at this time, the electromagnetic control part drives the retractable pressing ring 14 to move downward. Under the action of the retractable pressing ring 14, the split clamping pipe 13 will be compressed inward, making it gather inward, clamping and fixing the muffler air pipe to be welded therein. The clamped and fixed muffler air pipe can ensure the verticality with the muffler partition. The position of the muffler partition and the air pipe on the assembly positioning plate 9 is controlled by the electric slide rail 6. At this time, the welding head 2 is controlled by the robotic arm 1 to weld the individual muffler partition and the air pipe. After completing the welding of the individual muffler partition and the air pipe, the two separately processed muffler partitions can be controlled to approach by the vertical adjustment motor 21, so that the air pipe fixed to one muffler partition is docked with the reserved hole on the other muffler partition. After completion of the docking, the welding head 2 is used to weld the un-welded muffler partition and the air pipe respectively;

[0054] Before the two muffler partitions approach each other, insert the short air pipe located inside the muffler housing into the reserved openings in the two muffler partitions, and control the support and perpendicularity of the short air pipe through the conical docking seat 17 provided on the lifting seat 16. When welding the short air pipe, control the height of the lifting seat 16 through the electric push rod 15 to achieve the control of the position of the short air pipe and the muffler partition, ensuring the consistency of the dimensions after welding. While completing the welding and assembly of the exhaust pipe muffler, it can ensure the distance between the two muffler partitions, the perpendicularity between the muffler partition and the air pipe, and the dimensional positioning of the air pipe, ensuring that the welded muffler meets the requirements of automotive exhaust pipe silencing, significantly improving the production quality and welding efficiency.

[0055] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes, should be covered within the protection scope of the present invention.

Claims

1. An assembly device for an exhaust pipe muffler, comprising a welding head (2) and an assembly table (3) which are installed on a robotic arm (1) and controlled by a co-control device, characterized in that, An assembly stand (3) is provided with an assembly upright seat (4). The assembly upright seat (4) is connected with two sets of oppositely arranged adjustment seats (5) through a vertical adjustment component. The adjustment seat (5) is connected with an electric slide rail (6) through a track seat. The electric slide rail (6) is connected with a bearing seat (8) through an electric slider (7). An assembly positioning plate (9) is arranged on the bearing seat (8). The assembly positioning plate (9) is connected with a bearing positioning rod (10) through a bidirectional driving component. A U-shaped positioning block (11) for positioning and supporting the silencer partition is arranged at the end of the bearing positioning rod (10). A positioning through-hole (12) is formed in the middle of the assembly positioning plate (9). A split clamping pipe (13) for fixing the silencer pipe is arranged on the side wall of the positioning through-hole (12). An inner retracting pressing ring (14) is connected to the outside of the split clamping pipe (13) through an electromagnetic control component. Electric push rods (15) are arranged on both sides of the lower assembly positioning plate (9). The output end of the electric push rod (15) is connected with a lifting seat (16). A conical docking seat (17) for docking with the silencer pipe is arranged on the lifting seat (16). The control device includes a control arm plate (18) connected with the robotic arm (1). A rotating opening (19) is arranged at the end of the control arm plate (18). Two remote control plates (20) are connected to the inner wall of the rotating opening (19) through a control component. The welding head (2) is arranged on the side wall of the remote control plate (20).

2. The assembly device of an exhaust pipe silencer according to claim 1, characterized in that The vertical adjustment component includes a vertical groove formed in the assembly upright seat (4). A vertical adjustment motor (21) is arranged on the assembly upright seat (4). The output end of the vertical adjustment motor (21) is fixedly connected with a vertical driving lead screw (22). The adjustment seat (5) is located in the vertical groove and is threadedly connected with the vertical driving lead screw (22) through a lead screw nut.

3. An assembling device for an exhaust pipe muffler according to claim 1, characterized in that, The bidirectional driving component includes a sliding limit strip (23) slidably arranged on the assembly positioning plate (9). A side strip (24) is fixedly connected to the side wall of the sliding limit strip (23). The bearing positioning rod (10) is fixedly arranged on the side strip (24).

4. The assembly device of an exhaust pipe silencer according to claim 3, characterized in that, A clamping control motor (25) is arranged on the assembly positioning plate (9). The output end of the clamping control motor (25) is fixedly connected with a control gear (26). A rack groove meshing with the control gear (26) is formed in the side strip (24).

5. The assembly device for an exhaust pipe silencer according to claim 1, characterized in that, The electromagnetic control component includes an electromagnetic ring (27) arranged on the assembly positioning plate (9). The inner retracting pressing ring (14) is sleeved on the outer side wall of the split clamping pipe (13) and is connected with the electromagnetic ring (27) through a return spring. The inner retracting pressing ring (14) contains magnetism and attracts the electromagnetic ring (27).

6. The assembly device of an exhaust pipe silencer according to claim 1, characterized in that, A rubber layer is arranged on the inner side wall of the split clamping pipe (13) to increase the friction force with the silencer pipe.

7. An assembling device for an exhaust pipe muffler according to claim 1, characterized in that, An adaptation through-hole is formed in the assembly positioning plate (9). The conical docking seat (17) extends upward through the adaptation through-hole.

8. The assembly device of an exhaust pipe muffler according to claim 1, characterized in that, The control assembly includes a control push rod (28) disposed within the control arm plate (18), a driving rack (29) is fixedly connected to the output end of the control push rod (28), the remote control board (20) is connected to the inner wall of the rotating opening (19) through a connecting rotating shaft, and a rotating meshing gear (30) meshing with the driving rack (29) is fixedly connected to the outer side wall of the connecting rotating shaft.

9. An assembly device for an exhaust pipe silencer according to claim 1, characterized in that, One side of the U-shaped positioning block (11) is provided with an arc-shaped opening, and its width is adapted to the thickness of the silencer partition.

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