An assembly device for muffler production

Abstract

The present invention relates to the field of silencer assembly technology, and in particular to an assembly device for silencer production, comprising a machine body and a silencer shell, wherein the silencer shell is composed of a silencer upper shell and a silencer lower shell, and a first lower limit block is fixedly installed at the upper and lower ends of the machine body, and a bidirectional screw is rotatably installed in the machine body, and the bidirectional screw has two threads with opposite rotation directions, and a movable nut is provided on each of the two threads of the bidirectional screw. The present invention first allows the upper and lower ends of the silencer lower shell to respectively offset against the two first lower limit blocks, and allows the two second lower limit blocks to offset against the left and right ends of the silencer lower shell, and then places the silencer upper shell on the silencer lower shell, first allows the two first upper limit blocks to respectively offset against the left and right ends of the silencer upper shell, and then allows the two second upper limit blocks to respectively offset against the upper and lower ends of the silencer upper shell, so that the silencer lower shell and the silencer upper shell are both in a limited state.

Description

Technical Field

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

[0002] A car muffler is a component used to reduce the noise generated by a motor vehicle's engine. Since the difference in length between the two pipes is equal to half the wavelength of the sound waves emitted by the car, the two sound waves interfere with each other when superimposed, canceling out the sound intensity and reducing the sound, thereby achieving a silencing effect.

[0003] The existing technology mostly adopts an assembly device for automobile muffler production, such as the one disclosed in announcement number CN115741030B. This technology includes a base, a clamping mechanism, a limiting mechanism, and a partition assembly conveying mechanism. The clamping mechanism includes two clamping blocks, which can slide along the width direction of the base. The clamping blocks are provided with clamping grooves, and the two clamping blocks can approach each other to clamp the muffler shell; the limiting mechanism can limit the clamped muffler shell along the length direction of the base; the partition assembly conveying mechanism includes a conveying channel and a conveying component, and the conveying component can drive the partition assembly to move along the conveying channel and finally insert it into the muffler shell. This technology can fix the muffler shell to be assembled by setting a clamping mechanism, and can limit the muffler shell by setting a limiting mechanism, so that the partition assembly conveying mechanism can push the partition assembly into the muffler shell, thereby improving production efficiency, reducing the number of laborers, and reducing production costs. However, the above technology still has problems during use due to structural limitations:

[0004] When assembling the silencer shell composed of the upper box shell and the lower box shell, it is necessary to first perform preliminary positioning of the assembled silencer pipe and the lower box shell, then place the upper box shell on the lower box shell and position it, and then use a welder to weld the straight seam where the upper box shell and the lower box shell contact each other. However, the above technology lacks a component for limiting the silencer shell composed of the upper box shell and the lower box shell, and thus the welding process of the silencer shell cannot be completed. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that there is a lack of components for limiting the silencer shell composed of an upper box shell and a lower box shell, and to propose an assembly device for silencer production.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A muffler production assembly device comprises a body and a muffler shell, the muffler shell being composed of a muffler upper shell and a muffler lower shell, a first lower limit block being fixedly mounted on the upper and lower ends of the body, a bidirectional lead screw being rotatably mounted in the body, the bidirectional lead screw having two threads with opposite rotation directions, and a movable nut being provided on each of the two threads of the bidirectional lead screw, a movable bracket being fixedly connected to each of the two movable brackets, a second lower limit block being fixedly mounted on each of the lower ends of the two movable brackets, a first upper limit block being provided on each of the upper and lower ends of the body, and a second upper limit block being provided on each of the upper and lower ends of the body;

[0008] The lower ends of the two movable brackets are provided with a transverse sliding groove, the sliding sleeve in the transverse sliding groove is provided with a movable long block, and the movable long block is provided with a first welder, and the upper and lower ends of the body are provided with a guide long groove, the guide long groove sliding sleeve is provided with a movable long block, and the movable long block is provided with a second welder, the body and the two movable brackets are provided with a driving assembly, and it is used to drive the bidirectional screw to rotate, drive the two first upper limit blocks and drive the second upper limit blocks, the two first lower limit blocks and the two second lower limit blocks are respectively used to limit the four sides of the lower shell of the silencer, the two first upper limit blocks and the two second upper limit blocks are respectively used to limit the four sides of the upper shell of the silencer, the mobile bracket is provided with a first moving mechanism, and it is used to drive the first welder, and the body is provided with a second moving mechanism, and it is used to drive the second welder.

[0009] Preferably, the muffler upper shell and the muffler lower shell are both half-box shell structures, and the two first upper limit blocks are both composed of a vertical rod and a horizontal rod, and the horizontal rod is movably offset from the muffler upper shell.

[0010] Preferably, the driving assembly includes a first driving motor fixedly mounted on the side end of the machine body, and the output end of the first driving motor is fixedly connected to the bidirectional screw, the upper end of the movable bracket is fixedly connected to a first pushing cylinder, and the output end of the first pushing cylinder is fixedly connected to the first upper limit block, the machine body is fixedly connected to a driving cylinder, and the output end of the driving cylinder is fixedly connected to the second upper limit block.

[0011] Preferably, the first moving mechanism includes a second pushing cylinder fixedly connected to the movable long block, and the output end of the second pushing cylinder is fixedly connected to the first welder, and the second pushing cylinder and the first welder are located on the same side of the first upper limit block.

[0012] Preferably, the first moving mechanism also includes a second drive motor fixedly mounted on the moving bracket, a rotating disc fixedly mounted on the output end of the second drive motor, the rotating disc is integrally formed with a first short yoke, and the first short yoke is arranged at the outer edge of the rotating disc away from the center of the circle.

[0013] Preferably, the first moving mechanism also includes a rotating long rod arranged on the moving bracket, and the upper end of the rotating long rod is rotatably connected to the moving bracket, the rotating long rod is provided with a first vertical slot and a second vertical slot, and the movable long block is integrally formed with a second short yoke.

[0014] Preferably, the first vertical slot and the second vertical slot are arranged on the rotating long rod in an upper and lower order, and the first short yoke and the second short yoke are both cylindrical long rod structures, and the first short yoke and the second short yoke are movably mounted in the first vertical slot and the second vertical slot respectively.

[0015] Preferably, the second moving mechanism includes a third pushing cylinder fixedly connected to the moving long block, the output end of the third pushing cylinder is fixedly connected to the second welder, and the second welder and the third pushing cylinder are located on the same side of the second upper limit block.

[0016] Preferably, the second moving mechanism also includes a third drive motor fixedly installed at the bottom end of the machine body, the output end of the third drive motor is fixedly connected to a starting rod, the other end of the starting rod is pin-connected to a connecting long rod, and the other end of the connecting long rod is pin-connected to the moving long block.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The present invention first allows the upper and lower ends of the muffler lower shell to respectively offset against the two first lower limit blocks, and allows the two movable brackets to respectively drive the two second lower limit blocks to offset against the left and right ends of the muffler lower shell, thereby limiting the four sides of the muffler lower shell. After that, the muffler upper shell is placed on the muffler lower shell, and first allows the two first upper limit blocks to respectively offset against the left and right ends of the muffler upper shell, and then allows the two second upper limit blocks to respectively offset against the upper and lower ends of the muffler upper shell, thereby limiting the four sides of the muffler upper shell, so that both the muffler lower shell and the muffler upper shell are in a limited state, thereby avoiding the deviation of the welding position due to shaking of the muffler lower shell and the muffler upper shell during welding.

[0019] 2. The present invention first allows the two first welders to respectively abut against the contact straight seams at the left and right ends of the lower shell and the upper shell of the muffler, and then allows the rotating long rod to drive the second short yoke and the movable long block to move back and forth left and right through the second vertical slot, so that the first welder moves back and forth left and right, and then welds the contact straight seams at the left and right ends of the lower shell and the upper shell of the muffler, and then allows the second welder to respectively abut against the contact straight seams at the upper and lower ends of the lower shell and the upper shell of the muffler, and then allows the connecting long rod to drive the movable long block to move back and forth left and right in the guide long slot, so that the second welder moves back and forth left and right, and then welds the contact straight seams at the upper and lower ends of the lower shell and the upper shell of the muffler, and then automatically completes the welding operation of the contact straight seams of the lower shell and the upper shell of the muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of an assembly device for muffler production proposed by the present invention;

[0021] Figure 2 This is a right-side cross-sectional schematic diagram of an assembly device for muffler production proposed by the present invention;

[0022] Figure 3 This is a front cross-sectional schematic diagram of an assembly device for muffler production proposed by the present invention;

[0023] Figure 4 This is a front view schematic diagram of a movable bracket and a movable nut of an assembly device for muffler production proposed by the present invention;

[0024] Figure 5 This is a rear view schematic diagram of a movable bracket and movable nut of an assembly device for muffler production proposed by the present invention;

[0025] Figure 6 This is a bottom view schematic diagram of the body of an assembly device for muffler production proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of a muffler shell of an assembly device for muffler production proposed by the present invention.

[0027] In the figure: 1. body; 2. silencer housing; 3. first lower limit block; 4. bidirectional screw; 5. movable nut; 6. movable bracket; 7. second lower limit block; 8. first upper limit block; 9. second upper limit block; 10. horizontal slide; 11. movable long block; 12. first welder; 13. guide long slot; 14. movable long block; 15. second welder; 16. first drive motor; 17. first push cylinder; 18. second push cylinder; 19. third push cylinder; 20. drive cylinder; 21. second drive motor; 22. rotating disk; 23. first short yoke; 24. rotating long rod; 25. first vertical slot; 26. second vertical slot; 27. second short yoke; 28. third drive motor; 29. ​​starting rod; 30. connecting long rod. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Reference Figure 1-Figure 7 , an assembly device for muffler production, comprising a body 1 and a muffler shell 2, as shown in the attached Figure 7 As shown, the silencer shell 2 is composed of a silencer upper shell and a silencer lower shell, and the silencer upper shell and the silencer lower shell are both half-box shell structures. The silencer pipe can be placed in the silencer lower shell first, and the silencer pipe and the silencer lower shell are welded using an external welder. The upper and lower ends of the body 1 are respectively fixed with first lower limit blocks 3. The assembled silencer pipe and the silencer lower shell can be placed on the first lower limit blocks 3 first, and the two first lower limit blocks 3 are respectively offset against the upper and lower ends of the silencer lower shell, thereby preliminarily limiting the silencer lower shell, and a two-way screw 4 is rotatably installed in the body 1. The two-way screw 4 has two threads with opposite rotation directions, and the two threads of the two-way screw 4 are respectively provided with shifting screws. The movable nut 5, when the bidirectional lead screw 4 rotates forward or reversely, allows the two movable nuts 5 to move relatively close to each other or move away from each other in the reverse direction, and the two movable nuts 5 are fixedly connected to a movable bracket 6, and the lower ends of the two movable brackets 6 are fixedly connected to a second lower limit block 7. When the two movable nuts 5 move relatively close to each other, the two second lower limit blocks 7 are respectively abutted against the left and right ends of the lower shell of the muffler, thereby limiting the four sides of the lower shell of the muffler. The upper ends of the two movable brackets 6 are each provided with a first upper limit block 8, and the two first upper limit blocks 8 are both composed of a vertical long rod and a horizontal long rod, and the horizontal long rod is movably abutted against the upper shell of the muffler, and the upper and lower ends of the body 1 are respectively provided with a second upper limit block 9;

[0030] Preferably, the lower ends of the two mobile brackets 6 are provided with a transverse sliding groove 10, the sliding sleeve in the transverse sliding groove 10 is provided with a movable long block 11, the movable long block 11 is provided with a first welder 12, the upper and lower ends of the body 1 are provided with a guide long groove 13, the guide long groove 13 sliding sleeve is provided with a movable long block 14, the movable long block 14 is provided with a second welder 15, the body 1 and the two mobile brackets 6 are provided with a driving assembly, and it is used to drive the bidirectional screw 4 to rotate, drive the two first upper limit blocks 8 and drive the second upper limit block 9, the two first lower limit blocks 3 and the two second lower limit blocks 7 are respectively used On the four sides of the lower shell of the limit muffler, two first upper limit blocks 8 and two second upper limit blocks 9 are respectively used to limit the four sides of the upper shell of the muffler. A first moving mechanism is provided on the movable bracket 6, and it is used to drive the first welder 12, and weld the contact straight seams at the left and right ends of the lower shell of the muffler and the upper shell of the muffler, and the remaining curved seams at the left and right ends of the lower shell of the muffler and the upper shell of the muffler are welded using an external welder. A second moving mechanism is provided on the body 1, and it is used to drive the second welder 15, and weld the contact straight seams at the upper and lower ends of the lower shell of the muffler and the upper shell of the muffler.

[0031] The driving assembly includes a first driving motor 16 fixedly mounted on the side end of the body 1, and the output end of the first driving motor 16 is fixedly connected to the bidirectional screw 4, and the first driving motor 16 is used to drive the bidirectional screw 4 to rotate, and the upper end of the movable bracket 6 is fixedly connected to the first pushing cylinder 17, and the output end of the first pushing cylinder 17 is fixedly connected to the first upper limit block 8, and the first pushing cylinder 17 is used to make the first upper limit block 8 move linearly, and a driving cylinder 20 is fixedly connected to the body 1, and the output end of the driving cylinder 20 is fixedly connected to the second upper limit block 9, and the driving cylinder 20 is used to make the second upper limit block 9 move linearly.

[0032] Preferably, the first moving mechanism includes a second pushing cylinder 18 fixedly connected to the movable long block 11, and the output end of the second pushing cylinder 18 is fixedly connected to the first welder 12, so that the first welder 12 can be moved linearly through the second pushing cylinder 18, and the second pushing cylinder 18 and the first welder 12 are located on the same side of the first upper limit block 8.

[0033] The first moving mechanism also includes a second driving motor 21 fixedly mounted on the moving bracket 6, a rotating disc 22 is fixedly mounted on the output end of the second driving motor 21, the rotating disc 22 is integrally formed with a first short yoke 23, and the first short yoke 23 is arranged at the outer edge of the rotating disc 22 away from the center of the circle; the first moving mechanism also includes a rotating long rod 24 arranged on the moving bracket 6, and the upper end of the rotating long rod 24 is rotatably connected to the moving bracket 6, the rotating long rod 24 is provided with a first vertical slot 25 and a second vertical slot 26, and the movable long block 11 is integrally formed with a second short yoke 27; the first vertical slot 25 and the second vertical slot The slots 26 are arranged in an upper and lower order on the rotating long rod 24. The first short yoke 23 and the second short yoke 27 are both cylindrical long rod structures. The first short yoke 23 and the second short yoke 27 are movably mounted in the first vertical slot 25 and the second vertical slot 26 respectively. When the rotating disc 22 rotates, the first short yoke 23 produces left and right position differences and up and down position differences, and the first vertical slot 25 is used to compensate for the up and down position difference of the first short yoke 23, so that the rotating long rod 24 rotates back and forth left and right. At the same time, the second vertical slot 26 is used to compensate for the up and down position difference at the lower end of the rotating long rod 24, so that the movable long block 11 moves back and forth left and right.

[0034] Preferably, the second moving mechanism includes a third pushing cylinder 19 fixedly connected to the moving long block 14, the output end of the third pushing cylinder 19 is fixedly connected to the second welder 15, and the second welder 15 and the third pushing cylinder 19 are located on the same side of the second upper limit block 9; the second moving mechanism also includes a third driving motor 28 fixedly installed at the bottom end of the body 1, as shown in the attached Figure 6 As shown, the output end of the third drive motor 28 is fixedly connected to a starting rod 29, the other end of the starting rod 29 is pin-connected to a connecting rod 30, and the other end of the connecting rod 30 is pin-connected to the moving long block 14. The rotating starting rod 29 drives the connecting rod 30 to move back and forth left and right, and at the same time, the connecting rod 30 drives the moving long block 14 to move back and forth left and right.

[0035] The present invention can be explained through the following operation mode:

[0036] First, place the assembled silencer pipe and the lower shell of the silencer on the body 1, so that the upper and lower ends of the lower shell of the silencer are respectively against the two first lower limit blocks 3, and start the first drive motor 16, so that the output end of the first drive motor 16 drives the bidirectional screw 4 to rotate. Since the two threads on the bidirectional screw 4 rotate in opposite directions, the two movable nuts 5 are moved relatively close to each other, and the two movable nuts 5 respectively drive the two movable brackets 6 to move together, so that the two movable brackets 6 respectively drive the two second lower limit blocks 7 to abut against the left and right ends of the lower shell of the silencer, thereby limiting the four sides of the lower shell of the silencer;

[0037] Afterwards, the upper shell of the muffler is placed on the lower shell of the muffler, and the two first push cylinders 17 are started, so that the two first push cylinders 17 drive the two first upper limit blocks 8 to move relatively close to each other, so that the two first upper limit blocks 8 are respectively against the left and right ends of the upper shell of the muffler, and then the two driving cylinders 20 are started, so that the two driving cylinders 20 drive the two second upper limit blocks 9 to move relatively close to each other, so that the two second upper limit blocks 9 are respectively against the upper and lower ends of the upper shell of the muffler, thereby limiting the four sides of the upper shell of the muffler;

[0038] When welding, the two second push cylinders 18 are started, and the two second push cylinders 18 respectively drive the two first welders 12 to move relatively close to each other, so that the two first welders 12 are respectively against the contact straight seams at the left and right ends of the muffler lower shell and the muffler upper shell, and then the second drive motor 21 is started, as shown in the attached figure. Figure 5 As shown, the second drive motor 21 drives the rotating disc 22 to rotate, and the rotating disc 22 drives the first short yoke 23 to rotate together. The rotating first short yoke 23 drives the rotating long rod 24 to move back and forth left and right through the first vertical slot 25, and the rotating long rod 24 drives the second short yoke 27 and the movable long block 11 to move back and forth left and right through the second vertical slot 26, so that the first welder 12 moves back and forth left and right, and then welds the contact straight seams at the left and right ends of the muffler lower shell and the muffler upper shell;

[0039] Then start the two third push cylinders 19, so that the two third push cylinders 19 respectively drive the two second welders 15 to move relatively close, so that the second welders 15 respectively contact the straight seams at the upper and lower ends of the muffler lower shell and the muffler upper shell, and then start the third drive motor 28. Figure 6 As shown, the third drive motor 28 drives the starting rod 29 to rotate, and the starting rod 29 drives the connecting long rod 30 to move back and forth left and right. At the same time, the connecting long rod 30 drives the moving long block 14 to move back and forth left and right in the guide long groove 13, so that the second welder 15 moves back and forth left and right, and then welds the contact straight seams at the upper and lower ends of the muffler lower shell and the muffler upper shell.

[0040] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An assembly device for muffler production, comprising a body (1) and a muffler housing (2), wherein the muffler housing (2) is composed of a muffler upper housing and a muffler lower housing, and is characterized in that: The upper and lower ends of the machine body (1) are respectively fixedly mounted with first lower limit blocks (3); a bidirectional screw (4) is rotatably mounted in the machine body (1); the bidirectional screw (4) has two threads with opposite rotation directions, and the two threads of the bidirectional screw (4) are respectively provided with movable nuts (5); the two movable nuts (5) are both fixedly connected to movable brackets (6); the lower ends of the two movable brackets (6) are both fixedly connected to second lower limit blocks (7); the upper ends of the two movable brackets (6) are both provided with first upper limit blocks (8); and the upper and lower ends of the machine body (1) are respectively provided with second upper limit blocks (9); The lower ends of the two movable brackets (6) are provided with a transverse sliding groove (10), a sliding sleeve in the transverse sliding groove (10) is provided with a movable long block (11), and a first welder (12) is provided on the movable long block (11). The upper and lower ends of the body (1) are provided with a guide long groove (13), a sliding sleeve of the guide long groove (13) is provided with a movable long block (14), and a second welder (15) is provided on the movable long block (14). The body (1) and the two movable brackets (6) are provided with a driving assembly, and the driving assembly is used to drive the bidirectional screw (4 ) performs rotational motion, drives two first upper limit blocks (8) and drives the second upper limit block (9), the two first lower limit blocks (3) and the two second lower limit blocks (7) are respectively used to limit the four sides of the lower shell of the muffler, the two first upper limit blocks (8) and the two second upper limit blocks (9) are respectively used to limit the four sides of the upper shell of the muffler, the movable bracket (6) is provided with a first moving mechanism, and is used to drive the first welder (12), the body (1) is provided with a second moving mechanism, and is used to drive the second welder (15); The first moving mechanism comprises a second pushing cylinder (18) fixedly connected to the movable long block (11), and the output end of the second pushing cylinder (18) is fixedly connected to the first welder (12), and the second pushing cylinder (18) and the first welder (12) are located on the same side of the first upper limit block (8).

2. The assembly device for muffler production according to claim 1, characterized in that: The muffler upper shell and the muffler lower shell are both half-box shell structures, and the two first upper limit blocks (8) are both composed of a vertical long rod and a horizontal long rod, and the horizontal long rod is movably offset from the muffler upper shell.

3. The assembly device for muffler production according to claim 2, characterized in that: The driving assembly includes a first driving motor (16) fixedly mounted on the side end of the machine body (1), and the output end of the first driving motor (16) is fixedly connected to the bidirectional lead screw (4); the upper end of the movable bracket (6) is fixedly connected to a first pushing cylinder (17), and the output end of the first pushing cylinder (17) is fixedly connected to the first upper limit block (8); the machine body (1) is fixedly connected to a driving cylinder (20), and the output end of the driving cylinder (20) is fixedly connected to the second upper limit block (9).

4. The assembly device for muffler production according to claim 3, characterized in that: The first moving mechanism further comprises a second driving motor (21) fixedly mounted on the moving bracket (6); a rotating disc (22) is fixedly mounted on the output end of the second driving motor (21); a first short yoke (23) is integrally formed with the rotating disc (22); and the first short yoke (23) is arranged at an outer edge of the rotating disc (22) away from the center.

5. The assembly device for muffler production according to claim 4, characterized in that: The first moving mechanism further comprises a rotating long rod (24) arranged on the moving bracket (6), and the upper end of the rotating long rod (24) is rotatably connected to the moving bracket (6), the rotating long rod (24) is provided with a first vertical slot (25) and a second vertical slot (26), and the movable long block (11) is integrally formed with a second short yoke (27).

6. The assembly device for muffler production according to claim 5, characterized in that: The first vertical slot (25) and the second vertical slot (26) are arranged on the rotating long rod (24) in an upper and lower order, and the first short yoke (23) and the second short yoke (27) are both cylindrical long rod structures. The first short yoke (23) and the second short yoke (27) are movably sleeved in the first vertical slot (25) and the second vertical slot (26), respectively.

7. The assembly device for muffler production according to claim 6, characterized in that: The second moving mechanism comprises a third pushing cylinder (19) fixedly connected to the moving long block (14), an output end of the third pushing cylinder (19) is fixedly connected to the second welder (15), and the second welder (15) and the third pushing cylinder (19) are located on the same side of the second upper limit block (9).

8. The assembly device for muffler production according to claim 7, characterized in that: The second moving mechanism further comprises a third driving motor (28) fixedly mounted on the bottom end of the machine body (1), an output end of the third driving motor (28) is fixedly connected to a starting rod (29), the other end of the starting rod (29) is pin-connected to a connecting rod (30), and the other end of the connecting rod (30) is pin-connected to the moving long block (14).

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