Silencer inner pipe spot welding mechanism

Abstract

The utility model discloses a silencer inner pipe spot welding mechanism which comprises a machine frame, a controller installed on one side of the machine frame and a spot welding device located on the other side of the machine frame, a horizontal moving mechanism is installed on the machine frame, a lifting mechanism is installed on the horizontal moving mechanism in a sliding mode, a working table is installed on the top of the lifting mechanism, and the working table is connected with the controller. A rotating motor is arranged on the working table, the rotating motor is connected with a rotating shaft, a clamping mechanism is fixed to the end, opposite to the rotating motor, of the rotating shaft, a silencer is clamped by the clamping mechanism, a positioning structure is further arranged on the working table, a U-shaped groove is formed in the positioning structure, and the U-shaped groove is connected with the rotating shaft. The peripheral side of the silencer makes contact with the interior of the U-shaped groove for positioning, and the end, opposite to the clamping mechanism, of the silencer faces the spot welding device and is connected with a steel wool ring in a sleeved mode. Horizontal and vertical movement and automatic rotating clamping of the silencer are achieved through all the air cylinders and the rotating electric mechanism, and welding efficiency and precision are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to anechoic device processing device technical field, specifically is anechoic device inner tube spot welding mechanism. BACKGROUND

[0002] The anechoic device is widely used in the field of automobile, mechanical equipment etc., and its main function is to reduce noise. The existing anechoic device is usually long tubular structure, and its end needs to be welded and fixed with steel wool ring to ensure the sealing property and overall strength of the anechoic device.

[0003] The traditional anechoic device welding mode mainly adopts manual operation, uses special welding mould to fix the anechoic device, and some adopt mechanical welding. Since the end of the anechoic device needs to be spot welded at four points respectively with 90 ° even division, the traditional fixing mode limits the movement and rotation of the anechoic device. The operator needs to manually loosen the clamp after welding a welding point, repositions, finds the next welding point and clamps again. This operation process is complicated, inefficient, and it is difficult to guarantee the position precision of the welding point. If the existing mechanical welding is adopted, the precision problem still exists.

[0004] The manual operation mode is inefficient, and the welding time is long. In addition, the welding point position of the prior art is easy to deviate. The operation is complicated, needs repeated positioning and clamping, and also affects the deformation of the anechoic pipe, causing quality problems of damage.

[0005] Therefore, it is necessary to provide an anechoic device inner tube spot welding mechanism capable of rotating and moving the anechoic device directly in the clamping state, improving the welding efficiency, guaranteeing the welding point position precision, and reducing the labor cost. UTILITY MODEL CONTENT

[0006] The utility model provides an anechoic device inner tube spot welding mechanism to solve the problems in the above background technology.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] The muffler inner tube spot welding mechanism, including frame, controller installed on one side of the machine and spot welding device located on the other side of the frame, the frame is installed with horizontal movement mechanism, the horizontal movement mechanism is installed with lifting mechanism on the sliding, the lifting mechanism top is installed with workbench, the workbench is equipped with a rotating motor, the rotating motor is connected with rotating shaft, the rotating shaft is fixed with clamping mechanism on the opposite end of the rotating motor, the clamping mechanism holds the muffler, the workbench is also equipped with positioning structure, and the positioning structure is equipped with U-shaped groove, the outer circumferential side of the muffler is in contact with the U-shaped groove, the opposite end of the muffler is towards the spot welding device and is sleeved with steel wire wool ring, the spot welding device, horizontal movement mechanism, lifting mechanism, rotating motor and clamping mechanism are electrically connected with the controller respectively.

[0009] Preferably, the horizontal movement mechanism includes a push cylinder installed on the middle of the upper part of the frame, two slide rails are symmetrically installed on the frame on both sides of the push cylinder, and two sliding blocks are slidably installed on the two slide rails. The extension direction of the push cylinder is the same as the sliding direction of the sliding block, and the push cylinder is electrically connected with the controller.

[0010] Preferably, the lifting mechanism includes a moving table connected and installed on the top of the sliding block, the moving table is equipped with a connecting plate on the bottom, the extension end of the push cylinder is fixedly connected with the connecting plate, a plurality of lifting cylinders are arranged on the top of the moving table, the workbench is installed and connected with the extension end of the top of the lifting cylinder, and the lifting cylinder is electrically connected with the controller. The connecting plate is pushed and pulled by the push cylinder, thereby driving the moving table to move horizontally along the slide rail, the workbench is driven to move vertically by the lifting cylinder, thereby realizing the position adjustment of the muffler held by the clamping mechanism in the vertical and horizontal directions.

[0011] Preferably, the workbench is equipped with two bearing seats, the rotating shaft is movably installed on the bearing seat, a transmission wheel one is fixed on the rotating shaft between the two bearing seats, the rotating motor is installed on the workbench on one side of the transmission wheel one, a transmission wheel two is fixed on the output shaft of the rotating motor, and a transmission belt is connected between the transmission wheel one and the transmission wheel two. The rotating motor drives the rotating shaft to rotate through the transmission belt, thereby driving the clamping mechanism and the muffler to rotate.

[0012] Preferably, the clamping mechanism includes a pneumatic clamp jaw, the pneumatic clamp jaw is equipped with two oppositely arranged clamping ends, the opposite sides of the two clamping ends are both installed with clamping blocks, the pneumatic clamp jaw is equipped with a connecting block one on the side opposite to the clamping block, the end of the rotating shaft close to the pneumatic clamp jaw is equipped with a connecting block two, the connecting block one and the connecting block two are threadedly fixedly connected, and the pneumatic clamp jaw is electrically connected with the controller. The pneumatic clamp jaw is also known as finger air cylinder, which is a mature technology and will not be described here.

[0013] Preferably, the two clamping blocks are provided with arc-shaped grooves on opposite sides, and the radii of the two arc-shaped grooves are matched with the radius of the outer circumferential surface of the muffler.

[0014] Preferably, the pneumatic clamping jaw is provided with a pad opposite to one side of the connecting block, the pad is provided with a mounting port on the side facing the muffler, a fixing block is mounted in the mounting port, and the fixing block is connected with the end of the muffler in a butt joint mode.

[0015] Preferably, the positioning structure comprises a plurality of supporting frames mounted on the workbench, the U-shaped grooves are located at the middle positions of the supporting frames, a plurality of threaded holes are arranged on the U-shaped grooves, and a positioning wheel is detachably mounted on the threaded hole.

[0016] Preferably, the outer side of the positioning wheel is provided with a rubber layer, and the bottom of the rack is provided with a roller at four corners. The positioning wheel is used for positioning the position of the welded end of the muffler, and can rotate with the positioning wheel when the muffler rotates, so that the outer side of the muffler is prevented from being directly in contact with the supporting frame and rotating, thereby preventing the outer side of the muffler from being scratched.

[0017] Preferably, the spot welding device comprises a welding machine body, an upper support and a lower support are mounted on the side of the welding machine body facing the rack, an upper telescopic rod is mounted on the upper support, a lower telescopic rod is mounted on the lower support, the telescopic ends of the upper telescopic rod and the lower telescopic rod are oppositely arranged, an upper electrode is mounted on the telescopic end of the upper telescopic rod, a lower electrode is mounted on the telescopic end of the lower telescopic rod, the upper electrode and the lower electrode are respectively electrically connected with the welding machine body, and the welding machine body is electrically connected with a controller.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] This invention achieves horizontal movement of the muffler by pushing the cylinder to extend and retract, which in turn moves the slider on the slide rail. The vertical movement of the worktable is achieved by extending and retracting the lifting cylinder, thereby enabling vertical adjustment of the muffler. Meanwhile, the combination of the rotary motor and the rotary shaft allows the muffler to rotate after being clamped, making it convenient for the operator to position the welding point. This avoids the tedious operation of manually loosening the clamp and adjusting the position required by traditional fixed clamps, thereby reducing labor costs and improving welding efficiency. By setting up a rotary motor, rotary shaft, clamping mechanism, and positioning structure, the muffler achieves automatic rotation and clamping. The rotary motor drives the rotary shaft to rotate, and the clamping mechanism rotates with the rotary shaft. The clamping part flexibly fixes the muffler on the worktable, and the positioning structure with a U-shaped groove ensures that the outer periphery of the muffler contacts the U-shaped groove for precise positioning. With the installation of positioning wheels of corresponding size, it can be used for mufflers of different sizes, solving the problems of low efficiency and low accuracy of manual or other mechanical clamping and rotation. In addition, by setting an upper telescopic rod and a lower telescopic rod on the side of the welding machine body, the upper and lower electrodes can be moved up and down relative to each other, eliminating the need for manual alignment and preventing the problem of misalignment of the upper and lower electrode welding points due to manual searching for welding points, thus improving the product yield. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the horizontal moving mechanism and lifting mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of each device on the top of the workbench of this utility model;

[0023] Figure 4 This is a schematic diagram of the clamping mechanism of this utility model;

[0024] Figure 5 This is a schematic diagram of the pad and fixing block of this utility model;

[0025] Figure 6 This is a schematic diagram of the positioning structure of this utility model;

[0026] Figure 7 This is a schematic diagram of the silencer and steel wool ring of this utility model;

[0027] Figure 8 This is a schematic diagram of the spot welding device of this utility model;

[0028] 1, workbench; 2, rotating motor; 3, rotating shaft; 4, clamping mechanism; 5, silencer; 6, steel wire velvet ring; 7, positioning structure; 8, U-shaped groove; 9, bearing seat; 10, transmission wheel one; 11, transmission wheel two; 12, transmission belt; 13, connecting block one; 14, pneumatic clamping jaw; 15, clamping end; 16, clamping block; 17, cushion block; 18, fixed block; 19, support frame; 20, positioning wheel; 21, mounting port; 22, arc-shaped groove; 23, rack; 24, moving table; 25, push cylinder; 26, slide rail; 27, sliding block; 28, lifting cylinder; 29, connecting plate; 30, roller; 31, horizontal movement mechanism; 32, lifting mechanism; 33, controller; 34, spot welding device; 35, welding machine body; 36, upper support; 37, lower support; 38, upper telescopic rod; 39, lower telescopic rod; 40, upper electrode; 41, lower electrode. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] Referring to Figures 1-8 , 1, a silencer inner tube spot welding mechanism, including rack 23, controller 33 installed on one side of machine 23 and spot welding device 34 located on the other side of rack 23, the rack 23 is installed with horizontal movement mechanism 31, the horizontal movement mechanism 31 is slidably installed with lifting mechanism 32, the lifting mechanism 32 top is installed with workbench 1, the workbench 1 is equipped with a rotating motor 2, the rotating motor 2 is connected with rotating shaft 3, the rotating shaft 3 opposite one end of rotating motor 2 is fixed with clamping mechanism 4, the clamping mechanism 4 clamps silencer 5, the workbench 1 is also provided with positioning structure 7, and the positioning structure 7 is provided with U-shaped groove 8, the outer circumferential side of silencer 5 is in contact with U-shaped groove 8 and is positioned, the one end of silencer 5 opposite clamping mechanism 4 is towards spot welding device 34 and is sleeved with steel wire velvet ring 6, the spot welding device 34, horizontal movement mechanism 31, lifting mechanism 32, rotating motor 2 and clamping mechanism 4 are electrically connected with controller 33 respectively.

[0031] The horizontal movement mechanism 31 includes the push cylinder 25 installed on the upper middle position of the rack 23, the two slide rails 26 are symmetrically installed on the rack 23 on the both sides of the push cylinder 25, and the sliding blocks 27 are slidably installed on the two slide rails 26. The extension direction of the push cylinder 25 is the same as the sliding direction of the sliding blocks 27, and the push cylinder 25 is electrically connected with the controller 33.

[0032] The lifting mechanism 32 comprises a moving table 24 connected to the top of the sliding block 27, the bottom of the moving table 24 is provided with a connecting plate 29, and the telescopic end of the push cylinder 25 is fixedly connected with the connecting plate 29, a plurality of lifting cylinders 28 are arranged on the top of the moving table 24, the workbench 1 is connected with the telescopic end on the top of the lifting cylinder 28, and the lifting cylinder 28 is electrically connected with the controller 33. The push cylinder 25 pushes and pulls the connecting plate 29, thereby driving the moving table 24 to move horizontally along the sliding rail 26, the lifting cylinder 28 drives the workbench 1 to move vertically, thereby realizing the position adjustment of the muffler 5 clamped by the clamping mechanism 4 in the vertical and horizontal directions.

[0033] The workbench 1 is provided with two bearing seats 9, the rotating shaft 3 is movably installed on the bearing seat 9, a transmission wheel one 10 is fixedly arranged on the rotating shaft 3 between the two bearing seats 9, the rotating motor 2 is installed on the workbench 1 on one side of the transmission wheel one 10, a transmission wheel two 11 is fixedly arranged on the output shaft of the rotating motor 2, and the transmission belt 12 is connected between the transmission wheel one 10 and the transmission wheel two 11. The rotating motor 2 drives the rotating shaft 3 to rotate through the transmission belt 12, thereby driving the clamping mechanism and the muffler 5 to rotate.

[0034] The clamping mechanism 4 comprises a pneumatic clamp jaw 14, the pneumatic clamp jaw 14 is provided with two oppositely arranged clamping ends 15, the opposite sides of the two clamping ends 15 are both provided with clamping blocks 16, the side opposite to the clamping block 16 of the pneumatic clamp jaw 14 is provided with a connecting block one 13, one end of the rotating shaft 3 close to the pneumatic clamp jaw 14 is provided with a connecting block two, the connecting block one 13 and the connecting block two are threadedly fixedly connected, and the pneumatic clamp jaw 14 is electrically connected with the controller 33. The pneumatic clamp jaw 14 is also known as a finger air cylinder, which is a mature technology and will not be described here.

[0035] The opposite sides of the two clamping blocks 16 are both provided with arc-shaped grooves 22, the radii of the two arc-shaped grooves 22 are matched with the radii of the outer circumferential surface of the muffler 5. The clamping block 16 is detachably connected with the pneumatic clamp jaw 14 through bolts, different radii of the clamping block 16 are replaced, thereby adapting to different diameters of the muffler 5 for clamping.

[0036] The side opposite to the connecting block one 13 of the pneumatic clamp jaw 14 is provided with a pad 17, the side of the pad 17 facing the muffler 5 is provided with a mounting hole 21, a fixed block 18 is mounted in the mounting hole 21, and the fixed block 18 is in butt joint connection with the end of the muffler 5. The fixed block 18 is mounted and fixed with the pad 17 through bolts, and different diameters of the fixed block 18 are replaced to position and connect the muffler 5 of different diameters.

[0037] The positioning structure 7 comprises a plurality of supporting frames 19 mounted on the workbench 1, the U-shaped groove 8 is located in the middle of the supporting frame 19, a plurality of threaded holes are arranged on the U-shaped groove 8, and a positioning wheel 20 is detachably mounted on the threaded hole. Each supporting frame 19 is arranged in a same straight line, the muffler 5 is arranged in the U-shaped groove 8 in the same straight line, and the supporting frame 19 supports the muffler 5 to prevent the muffler 5 from being deviated during the machining process.

[0038] The outer side of the positioning wheel 20 is provided with a rubber layer. The positioning wheel 20 is used for positioning the position of the welding end of the muffler 5, and can rotate with the positioning wheel 20 when the muffler 5 rotates, so that the outer side of the muffler 5 is prevented from being directly in contact with the supporting frame 19 to rotate, so that the outer side of the muffler 5 is prevented from being scratched, and the size of the positioning wheel 20 can be replaced according to the size of the muffler 5, so that the positioning of mufflers 5 of different sizes is adapted.

[0039] The spot welding device 34 comprises a welding machine body 35, an upper supporting frame 36 and a lower supporting frame 37 are mounted on one side of the welding machine body 35, an upper telescopic rod 38 is mounted on the upper supporting frame 36, a lower telescopic rod 39 is mounted on the lower supporting frame 37, the telescopic end of the upper telescopic rod 38 is arranged opposite to the telescopic end of the lower telescopic rod 39, an upper electrode 40 is mounted on the telescopic end of the upper telescopic rod 38, a lower electrode 41 is mounted on the telescopic end of the lower telescopic rod 39, the upper electrode 40 and the lower electrode 41 are respectively electrically connected with the welding machine body 35, and the welding machine body 35 is electrically connected with the controller 33. The spot welding device 34 is a positive and negative electrode resistance spot welding machine, the principle of which is the same as that of the existing resistance welding machine, which is a mature technology and will not be described in detail here.

[0040] A muffler spot welding method based on the muffler inner tube spot welding mechanism, comprising the following steps:

[0041] 1) The steel wool ring 6 is sleeved on the end of the muffler 5, and the muffler 5 is placed on the supporting frame 19, the positioning wheel 20 positions the welding end of the muffler 5, and the other end of the muffler 5 is abutted and mounted on the fixed block 18;

[0042] 2) The pneumatic clamping jaw 14 is started to clamp the end of the muffler 5, the clamping and positioning of the muffler 5 is completed, the push cylinder 25 is started to push and pull the workbench 1 on the slide rail 26, the position of the muffler 5 on the clamping mechanism in the horizontal direction is adjusted, and the lifting cylinder 28 is started to drive the workbench 1 to ascend and descend, so that the position of the muffler 5 in the vertical direction is adjusted;

[0043] 3) The first welding point of the steel wool ring 6 and the muffler 5 is moved to between the upper electrode 40 and the lower electrode 41, the upper telescopic rod 38 and the lower telescopic rod 39 are started to make the upper electrode 40 in contact with the steel wool ring 6 and the lower electrode 41 in contact with the inner wall of the muffler 5;

[0044] 4) Start the welding machine body 35 to carry out the first point of welding, spot welding is completed, the upper telescopic rod 38 and the lower telescopic rod 39 reset, start the rotary motor 2, through the transmission belt 12, transmission wheel one 10, transmission wheel two 11, drive the rotating shaft 3 to rotate, in turn drive the clamping mechanism 4 and the muffler 5 clamped with it to rotate 90 degrees, then carry out the second point to carry out welding, repeat the above operation, the steel wool ring 6 and the muffler 4 Four points are welded, complete the processing.

[0045] The utility model discloses a through each cylinder and rotary motor 2 construction realizes the horizontal and vertical movement and automatic rotation of muffler 5 and clamps, improves the welding efficiency and precision.

[0046] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0047] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A mechanism for spot welding an inner pipe of a muffler, comprising a frame (23), a controller (33) installed on one side of the frame (23), and a spot welding device (34) located on the other side of the frame (23), characterized in that, The rack (23) is provided with a horizontal moving mechanism (31), the horizontal moving mechanism (31) is provided with a lifting mechanism (32) slidingly installed on it, the lifting mechanism (32) is provided with a workbench (1) installed on the top, the workbench (1) is provided with a rotating motor (2), the rotating motor (2) is connected with a rotating shaft (3), the rotating shaft (3) is fixed with a clamping mechanism (4) at the opposite end of the rotating motor (2), the clamping mechanism (4) clamps a muffler (5), the workbench (1) is also provided with a positioning structure (7), and the positioning structure (7) is provided with a U-shaped groove (8), the outer circumferential side of the muffler (5) is in contact with the U-shaped groove (8), and the opposite end of the muffler (5) is towards the spot welding device (34) and is sleeved with a steel wire mesh ring (6).

2. The muffler inner tube spot welding mechanism according to claim 1, characterized by, The horizontal moving mechanism (31) comprises a push air cylinder (25) installed at the middle position of the upper portion of the rack (23), two slide rails (26) are symmetrically installed on the rack (23) on the two sides of the push air cylinder (25), and slide blocks (27) are slidingly installed on the two slide rails (26).

3. The muffler inner tube spot welding mechanism according to claim 2, characterized by, The lifting mechanism (32) comprises a moving table (24) connected and installed on the top of the slide block (27), the moving table (24) is provided with a connecting plate (29) at the bottom, and the telescopic end of the push air cylinder (25) is fixedly connected with the connecting plate (29), a plurality of lifting air cylinders (28) are arranged on the top of the moving table (24), the workbench (1) is installed and connected with the telescopic end on the top of the lifting air cylinder (28), and the lifting air cylinder (28) is electrically connected with the controller (33).

4. The muffler inner tube spot welding mechanism according to claim 3, characterized by, The workbench (1) is provided with two bearing seats (9), the rotating shaft (3) is movably installed on the bearing seat (9), a transmission wheel one (10) is fixed on the rotating shaft (3) between the two bearing seats (9), the rotating motor (2) is installed on the workbench (1) on one side of the transmission wheel one (10), a transmission wheel two (11) is fixed on the output shaft of the rotating motor (2), and the transmission belt (12) is connected between the transmission wheel one (10) and the transmission wheel two (11).

5. The muffler inner tube spot welding mechanism according to claim 4, characterized by, The clamping mechanism (4) comprises a pneumatic clamping jaw (14), the pneumatic clamping jaw (14) is provided with two opposite clamping ends (15), the opposite sides of the two clamping ends (15) are both provided with clamping blocks (16), the pneumatic clamping jaw (14) is provided with a connecting block one (13) at the side opposite to the clamping block (16), the rotating shaft (3) is provided with a connecting block two at the end close to the pneumatic clamping jaw (14), the connecting block one (13) and the connecting block two are in threaded fixed connection, and the pneumatic clamping jaw (14) is electrically connected with the controller (33).

6. The muffler inner tube spot welding mechanism according to claim 5, wherein, The opposite sides of the two clamping blocks (16) are both provided with arc grooves (22), and the radii of the two arc grooves (22) are matched with the radius of the outer circumferential surface of the muffler (5).

7. The muffler inner tube spot welding mechanism according to claim 6, characterized by, The pneumatic clamping jaw (14) is provided with a pad (17) opposite to one side of the connecting block (13), the pad (17) is provided with a mounting port (21) towards the side of the muffler (5), the mounting port (21) is mounted with a fixing block (18), the fixing block (18) is connected with the end of the muffler (5).

8. The muffler inner tube spot welding mechanism according to claim 7, characterized by, The positioning structure (7) comprises a plurality of supporting frames (19) mounted on the workbench (1), the U-shaped groove (8) is located at the middle position of the supporting frame (19), a plurality of threaded holes are arranged on the U-shaped groove (8), and a positioning wheel (20) is detachably mounted on the threaded hole.

9. The muffler inner tube spot welding mechanism of claim 1, wherein, The spot welding device (34), the horizontal moving mechanism (31), the lifting mechanism (32), the rotating motor (2) and the clamping mechanism (4) are electrically connected with the controller (33) respectively.

10. The muffler inner tube spot welding mechanism of claim 8, wherein, The spot welding device (34) comprises a welding machine body (35), the welding machine body (35) is provided with an upper support (36) and a lower support (37) towards one side of the rack, the upper support (36) is provided with an upper telescopic rod (38), the lower support (37) is provided with a lower telescopic rod (39), the telescopic end of the upper telescopic rod (38) is arranged opposite to the telescopic end of the lower telescopic rod (39), the telescopic end of the upper telescopic rod (38) is provided with an upper electrode (40), the telescopic end of the lower telescopic rod (39) is provided with a lower electrode (41), the upper electrode (40) and the lower electrode (41) are electrically connected with the welding machine body (35) respectively, and the welding machine body (35) is electrically connected with the controller (33).

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