Assembling device for silencer production

Abstract

The invention relates to the technical field of silencer assembly, in particular to an assembly device for silencer production, which comprises a machine body and a silencer shell, the silencer shell is composed of a silencer upper shell and a silencer lower shell, first lower limiting blocks are fixedly mounted at the upper end and the lower end of the machine body respectively, and a bidirectional lead screw is rotatably mounted in the machine body; the two-way lead screw is provided with two threads with opposite screwing directions, and the two threads of the two-way lead screw are respectively provided with a movable nut. The upper end and the lower end of the lower silencer shell abut against two first lower limiting blocks correspondingly, two second lower limiting blocks abut against the left end and the right end of the lower silencer shell, then the upper silencer shell is placed on the lower silencer shell, two first upper limiting blocks abut against the left end and the right end of the upper silencer shell correspondingly, and then the upper silencer shell is placed on the lower silencer shell. And then the two second upper limiting blocks abut against the upper end and the lower end of the silencer upper shell correspondingly, so that the silencer lower shell and the silencer upper shell are both in the limiting state.

Description

Technical Field

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

[0002] The car muffler is a part used to reduce the noise generated by the engine of a motor vehicle. 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 and cancel each other out when superimposed, thereby reducing the sound intensity and reducing the sound, thereby achieving a silencing effect.

[0003] The existing technology mostly adopts the assembly device for automobile muffler production disclosed in the announcement number CN115741030B, which 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, and the clamping blocks are provided with clamping grooves. 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 assembly, and the conveying assembly 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 labor used, and reducing production costs. However, the above technology still has problems during use due to structural limitations: 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

[0004] 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 position of a muffler shell composed of an upper box shell and a lower box shell, and to propose an assembly device for muffler production.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An assembly device for muffler production, comprising a machine 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 installed at the upper and lower ends of the machine body, a bidirectional lead screw being rotatably installed in the machine body, the bidirectional lead screw having two threads with opposite rotation directions, and movable nuts being respectively arranged on the two threads of the bidirectional lead screw, two movable nuts being fixedly connected to movable brackets, the lower ends of the two movable brackets being fixedly connected to a second lower limit block, the upper ends of the two movable brackets being arranged with a first upper limit block, and the upper and lower ends of the machine body being arranged with a second upper limit block; The lower ends of the two movable brackets are each provided with a transverse sliding groove, the sliding sleeve in the transverse sliding groove is provided with a movable long block, the movable long block is provided with a first welder, the upper and lower ends of the body are provided with a guide long groove, the sliding sleeve of the guide long groove is provided with a movable long block, the movable long block is provided with a second welder, the body and the two movable brackets are provided with a driving assembly, and the driving assembly is used to drive the two-way 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 movable bracket is provided with a first moving mechanism, and the driving assembly is used to drive the first welder, and the body is provided with a second moving mechanism, and the driving assembly is used to drive the second welder.

[0006] 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 long rod and a horizontal long rod, and the horizontal long rod is movably opposed to the muffler upper shell.

[0007] 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 lead 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 a first upper limit block, and the machine body is fixedly connected to a driving cylinder, and the output end of the driving cylinder is fixedly connected to a second upper limit block.

[0008] 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.

[0009] Preferably, the first moving mechanism also includes a second driving motor fixedly mounted on the moving bracket, a rotating disc is fixedly mounted on the output end of the second driving 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.

[0010] 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 groove and a second vertical groove, and the movable long block is integrally formed with a second short yoke.

[0011] Preferably, the first vertical slot and the second vertical slot are arranged on the rotating long rod in an up-down sequence, 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.

[0012] Preferably, the second moving mechanism comprises 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.

[0013] 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.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The present invention first allows the upper and lower ends of the muffler lower shell to respectively abut against the two first lower limit blocks, and allows the two movable brackets to respectively drive the two second lower limit blocks to abut 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 abut against the left and right ends of the muffler upper shell, respectively, and then allows the two second upper limit blocks to abut against the upper and lower ends of the muffler upper shell, respectively, thereby limiting the four sides of the muffler upper shell, so that the muffler lower shell and the muffler upper shell are both in a limited state, thereby avoiding the welding position from being offset due to the shaking of the muffler lower shell and the muffler upper shell during the welding process.

[0015] 2. The present invention firstly allows the two first welders to respectively abut against the contacting 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 contacting 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 contacting 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 contacting 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 contacting straight seams of the lower shell and the upper shell of the muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an assembly device for producing a muffler proposed by the present invention; Figure 2 It is a right sectional schematic diagram of an assembly device for muffler production proposed by the present invention; Figure 3 A front cross-sectional schematic diagram of an assembly device for producing a muffler proposed by the present invention; Figure 4 A schematic front view of a movable bracket and a movable nut of an assembly device for muffler production proposed by the present invention; Figure 5 A rear view schematic diagram of a movable bracket and a movable nut of an assembly device for muffler production proposed by the present invention; Figure 6 A schematic bottom view of a body of an assembly device for producing a muffler proposed by the present invention; Figure 7 This is a schematic diagram of the structure of a silencer shell of an assembly device for silencer production proposed by the present invention.

[0017] In the figure: 1. body; 2. silencer housing; 3. first lower limit block; 4. bidirectional lead 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 groove; 11. movable long block; 12. first welder; 13. guide long groove; 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

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0019] Reference Figure 1-Figure 7 , an assembly device for muffler production, comprising a body 1 and a muffler housing 2, as shown in the attached Figure 7As shown, the silencer housing 2 is composed of a silencer upper housing and a silencer lower housing, and both the silencer upper housing and the silencer lower housing are half-box shell structures. The silencer pipe can be placed in the silencer lower housing first, and the silencer pipe and the silencer lower housing are welded by 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 housing can be placed on the first lower limit blocks 3 first, and the two first lower limit blocks 3 are respectively abutted against the upper and lower ends of the silencer lower housing, thereby preliminarily limiting the silencer lower housing, and a bidirectional lead screw 4 is rotatably installed in the body 1, and the bidirectional lead screw 4 has two threads with opposite rotation directions, and the two threads of the bidirectional lead screw 4 are respectively provided with shifting 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 with movable brackets 6, and the lower ends of the two movable brackets 6 are fixedly connected with second lower limit blocks 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, and the upper ends of the two movable brackets 6 are provided with first upper limit blocks 8, and the two first upper limit blocks 8 are 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 second upper limit blocks 9; Preferably, the lower ends of the two movable brackets 6 are provided with a transverse slide groove 10, a movable long block 11 is slidably sleeved in the transverse slide groove 10, a first welder 12 is arranged on the movable long block 11, a guide long groove 13 is provided at the upper and lower ends of the body 1, a movable long block 14 is slidably sleeved in the guide long groove 13, a second welder 15 is arranged 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 lead screw 4 to rotate, drive the two first upper limit blocks 8 and drive the second upper limit blocks 9, and 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 limited 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, and a first moving mechanism is arranged on the movable bracket 6, and it is used to drive the first welder 12, and weld the contacting 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, and a second moving mechanism is arranged on the body 1, and it is used to drive the second welder 15, and weld the contacting straight seams at the upper and lower ends of the lower shell of the muffler and the upper shell of the muffler.

[0020] The driving component includes a first driving motor 16 fixedly installed 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.

[0021] 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.

[0022] 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 26 The grooves 26 are arranged on the rotating long rod 24 in an up-down sequence. 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 groove 25 and the second vertical groove 26 respectively. When the rotating disc 22 rotates, the first short yoke 23 produces a left-right position difference and an up-down position difference, and the first vertical groove 25 is used to compensate for the up-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 groove 26 is used to compensate for the up-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.

[0023] Preferably, the second moving mechanism includes a third push cylinder 19 fixedly connected to the moving long block 14, the output end of the third push cylinder 19 is fixedly connected to the second welder 15, and the second welder 15 and the third push cylinder 19 are located on the same side of the second upper limit block 9; the second moving mechanism also includes a third drive motor 28 fixedly installed at the bottom end of the body 1, as shown in the attached Figure 6As shown, the 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. 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.

[0024] The present invention can be explained by the following operation mode: First, place the assembled silencer pipe and the lower shell of the silencer on the machine 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 lead screw 4 to rotate, and because the two threads on the bidirectional lead screw 4 rotate in opposite directions, the two movable nuts 5 move 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 be 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; Then, 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; 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 contacting straight seams at the left and right ends of the lower shell and the upper shell of the muffler, and then the second drive motor 21 is started, as shown in the attached figure. Figure 5 As shown, the second driving motor 21 drives the rotating disc 22 to rotate, and the rotating disc 22 drives the first short yoke 23 to rotate together, and the rotating first short yoke 23 drives the rotating long rod 24 to reciprocate 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 reciprocate left and right through the second vertical slot 26, so that the first welder 12 reciprocates left and right, and then welds the contacting straight seams at the left and right ends of the lower shell and the upper shell of the muffler; Then, the two third push cylinders 19 are started, and the two third push cylinders 19 respectively drive the two second welders 15 to move relatively close to each other, so that the second welders 15 are respectively against the contact straight seams at the upper and lower ends of the lower shell of the muffler and the upper shell of the muffler, and then the third drive motor 28 is started. Figure 6As shown, the third driving 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 guiding long groove 13, so that the second welder 15 moves back and forth left and right, and then welds the contacting straight seams at the upper and lower ends of the muffler lower shell and the muffler upper shell.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope 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, 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 lead screw (4) is rotatably mounted in the machine body (1); the bidirectional lead screw (4) has two threads with opposite rotation directions, and the two threads of the bidirectional lead screw (4) are respectively provided with movable nuts (5); the two movable nuts (5) are both fixedly connected with movable brackets (6); the lower ends of the two movable brackets (6) are both fixedly connected with 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 each provided with a transverse sliding groove (10), a movable long block (11) is slidably sleeved in the transverse sliding groove (10), and a first welder (12) is arranged on the movable long block (11). The upper and lower ends of the machine body (1) are each provided with a guide long groove (13), a movable long block (14) is slidably sleeved in the guide long groove (13), and a second welder (15) is arranged on the movable long block (14). The machine body (1) and the two movable brackets (6) are provided with a driving assembly, and the driving assembly is used to drive the bidirectional lead screw (4 ) to perform rotational movement, drive two first upper limit blocks (8) and drive a 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 first movable mechanism is provided on the movable bracket (6), and is used to drive the first welder (12), and the second movable mechanism is provided on the body (1), and is used to drive the second welder (15).

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 opposed to the muffler upper shell.

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

4. The assembly device for muffler production according to claim 3, characterized in that: The first moving mechanism comprises a second pushing cylinder (18) fixedly connected to the movable long block (11), and an 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).

5. The assembly device for muffler production according to claim 4, 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); the rotating disc (22) is integrally formed with a first short yoke (23); and the first short yoke (23) is arranged at an outer edge of the rotating disc (22) away from the center of the circle.

6. The assembly device for muffler production according to claim 5, 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).

7. The assembly device for muffler production according to claim 6, 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, the first short yoke (23) and the second short yoke (27) are both cylindrical long rod structures, and 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.

8. The assembly device for muffler production according to claim 7, 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); the second welder (15) and the third pushing cylinder (19) are located on the same side of the second upper limit block (9).

9. The assembly device for muffler production according to claim 8, 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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