A full-process production line for metal exhaust pipes

Abstract

The present invention discloses a full-process production line for metal exhaust pipes, comprising a main pipe forming line, a short pipe forming line and an assembly device. The main pipe forming line transports the formed main pipe to the assembly device through a transfer device 1, and the short pipe forming line transports the formed short pipe to the assembly device through a transfer device 2. The assembly device fixes the short pipe and the main pipe and bends the short pipe. Through the mutual cooperation of various devices, the fully automatic production of metal exhaust pipes can be realized, and the interference of personnel is reduced to improve the production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of metal exhaust pipe production equipment, in particular to a full-process production line for metal exhaust pipes. Background Art

[0002] Gas water heaters use liquefied petroleum gas or natural gas as fuel. The heat generated by combustion is transferred to the water through a heat exchanger to heat it up, and the gas generated during combustion needs to be discharged to the outside; therefore, each combustion water heater will have an exhaust pipe, usually with a straight section and a curved section design; usually the exhaust pipe will be produced in sections, because if an integrated molding method is adopted, in order to accommodate the long metal pipe while the steps remain unchanged, each placement position needs to be made very long, and the processing equipment needs to be made very large. Therefore, basically, segmented production is adopted, that is, the main pipe and the short pipe are produced separately. However, the current production process still requires a lot of manual assistance, and has not formed a complete automated assembly line production. Materials need to be continuously transferred and processed, resulting in long production time and low efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a full-process production line for metal exhaust pipes to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A full-process production line for a metal exhaust pipe comprises a main pipe forming line, a short pipe forming line and an assembly device, wherein the main pipe forming line transports the formed main pipe to the assembly device via a first transfer device, and the short pipe forming line transports the formed short pipe to the assembly device via a second transfer device, and the assembly device fixes the short pipe and the main pipe and performs a bending operation on the short pipe;

[0006] The main pipe forming line comprises a main pipe feeding device, a main pipe front end processing device, a main pipe punching device and a main pipe end cover installation device which are arranged in sequence, and the above devices are connected by a transfer device;

[0007] The short tube forming line includes a short tube feeding device and a short tube corrugated forming device, and the short tube corrugated forming device includes a pushing component 1 and a forming component, and the pushing component 1 is used to push the short tube into the forming component and continuously drive the short tube to move;

[0008] The forming assembly includes a fastening component 1 and a fastening component 2 which are spaced apart, and an expansion claw located therebetween. The expansion claw is provided with a conical surface on its outer periphery, and a pull rod 2 is passed through its interior. The pull rod 2 is used to expand the expansion claw outward, and the expansion claw is resettable. The two ends of the pull rod extend to the outside and are connected to a driver 9. The fastening component 1 and the fastening component 2 are respectively connected to a driver 10 and a driver 11, and the driver 10 and the driver 11 respectively push the fastening component 1 and the fastening component 2 away from or closer to each other.

[0009] According to a further technical solution, the driver nine comprises a cylinder eight and a guide cylinder mounted on a fixed plate three, wherein the guide cylinder is connected to an expansion claw via a plurality of claws, and the cylinder eight is connected to a pull rod two via a connector four, and the pull rod two penetrates into the guide cylinder and extends to the expansion claw.

[0010] A further technical solution is that the pushing component 1 includes a bracket 3, in which a driver 12 and a supporting frame are installed, the movable end of the driver 12 is connected to an extension rod, and an air claw 4 is installed at the end of the extension rod. The four air claws are provided with a plurality of action ends in a ring array, and the action ends are connected to a resistance part 2. The supporting frame is provided with a plurality of rollers 4 along the moving direction of the short tube, and the supporting frame is composed of two bearing plates, and a transmission rod is provided on one side of the two bearing plates. The transmission rod is rotatably connected to the bracket 2, and a transmission block 1 is fixedly connected to one end of the transmission rod, and a pulley is provided on the transmission block 1, and the pulley is placed on the movable groove of the transmission block 2. The transmission block 2 is provided at the output end of the cylinder 9, and the cylinder 9 is installed on the bracket 2.

[0011] A further technical solution is that the assembly device includes a press-fit connection component, and an acquisition component 1 and an acquisition component 2 are respectively provided on both sides of the press-fit connection component, and the acquisition component 2 is connected to the pushing component 2; the acquisition component 1 is used to push the main pipe to move so that one end of the main pipe is placed in the press-fit connection component; the acquisition component 2 is used to push the short pipe to move so that one end of the short pipe is placed in the press-fit connection component, one end of the short pipe penetrates into one end of the main pipe, and the outer wall of the short pipe is close to the inner wall of the main pipe; the press-fit connection component is provided with an indentation flange, which is used to press and fix the ends of the short pipe and the main pipe; the pushing component 2 is used to push the acquisition component 2 to rotate, and synchronously drive the short pipe to bend.

[0012] A further technical solution is that the press-fit connection assembly includes a fixed table, on which two forming blocks for use are slidably connected, and a driver thirteen for pushing the two forming blocks to move, the two forming blocks are combined to form a fixed position one, the indentation flange is arranged on the inner wall of the fixed position one, the driver thirteen can drive the forming blocks to open and close, the driver thirteen includes a rotating cylinder two, the output end of the rotating cylinder two is connected to a transmission block three, the two ends of the transmission block three are respectively rotatably connected to transmission blocks four, and the two transmission blocks four are respectively rotatably connected to the two forming blocks.

[0013] A further technical solution is that cylinders ten are longitudinally arranged on both sides of the two forming blocks, a movable block one is installed at the output end of the cylinder ten, and a roller five is arranged at the end of the movable block one, and the roller five can contact the outer side of the forming block.

[0014] A further technical solution is that the acquisition component 2 includes a bracket 4, a driver 14 is installed on the bracket 4, a fixed block is installed on the movable end of the driver 14, the fixed block is rotatably connected to a fixed cylinder, a limit piece is provided on the outer side of the fixed cylinder, and the limit piece can interfere with both sides of the bracket 4, the fixed cylinder includes a cylinder body, a cylinder 11 is provided on the outer side of the cylinder body, the output end of the cylinder 11 extends into the cylinder body, a conical groove is formed in the cylinder body, a plurality of movable plates are provided in a ring array on the inner wall of the conical groove, a circular movable block 2 connected to the output end of the cylinder 11 is provided in the cylinder body, one end of the movable plate is clamped with the movable block, and the other end extends out of the cylinder body to form a fixed position 2, and there is a gap between the plurality of movable plates near one end of the movable block.

[0015] A further technical solution is that the main pipe front end processing device includes a multi-axis moving mechanism, a diameter expansion mechanism and a edge pressing mechanism; the diameter expansion mechanism is used to expand the diameter of one end of the main pipe; the edge pressing mechanism is used to reduce the diameter of the side wall of the main pipe close to the other end; the multi-axis moving mechanism is equipped with a plurality of linearly distributed clamps, which are progressive actions and are used to sequentially pass the main pipe from the outside into the diameter expansion mechanism, the edge pressing mechanism and the output.

[0016] A further technical solution is that the main pipe punching device includes a punching component and a rotating and fixing component 2, which respectively correspond to the two ends of the main pipe, and a bearing component is provided between the two, and a conveying component is installed below the bearing component; a punching position is provided in the punching component for the end of the main pipe to penetrate; the rotating and fixing component 2 is connected to the translation component 3, which is used to drive the punching component to be pushed forward in the direction of the punching component and drive it to rotate.

[0017] According to a further technical solution, the main pipe end cap installation device includes an end cap conveying assembly, a material shifting assembly is provided at the end of the end cap conveying assembly, an end cap transfer assembly is provided at the position corresponding to the material shifting assembly, the end cap body is uprightly entered into the end cap transfer assembly, and moved to the installation assembly, the installation assembly is provided with a placement position, and the installation assembly obtains the end cap body and transfers it to the end of the main pipe.

[0018] Beneficial effects of the present invention:

[0019] The present invention can realize the full-automatic production of metal exhaust pipes through the mutual cooperation of various devices, reduce human intervention and improve production efficiency;

[0020] In addition, the corrugation is formed by extrusion, so that the formed short tube corrugation has better ductility and can have a larger bending angle when bending, which is comparable to plastic corrugated tubes. Moreover, the lateral compression method is used for forming, which can reduce the friction on the short tube compared to the extrusion molding method, avoid thinning of the tube wall, and avoid tearing of the tube wall during the rolling molding process.

[0021] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 : The overall structure diagram of the present invention.

[0023] Figure 2 : Structural diagram of the short tube corrugated forming device of the present invention.

[0024] Figure 3 : Structural diagram of the molding assembly of the present invention.

[0025] Figure 4 : Disassembly diagram of the molding assembly of the present invention.

[0026] Figure 5 : Nine structural diagrams of the expansion claw and driver of the present invention.

[0027] Figure 6 : A structural diagram of the push component of the present invention.

[0028] Figure 7 : Structural diagram of the assembly device of the present invention.

[0029] Figure 8 : Structural diagram of the acquisition component 1 and the press-fit connection component of the present invention.

[0030] Fig. 9 : Structural diagram of acquisition component 2 and press-fit connection component of the present invention.

[0031] Fig.10 : Structural diagram of the fixed cylinder of the present invention.

[0032] Fig.11 : Diagram of the main pipe front end processing device of the present invention.

[0033] Fig.12 : Distribution diagram of the diameter expansion mechanism and edge pressing mechanism of the present invention.

[0034] Fig.13 : Diameter expansion mechanism structure diagram of the present invention.

[0035] Fig.14 : Structural diagram of the edge pressing mechanism of the present invention.

[0036] Fig.15 : Structural diagram of the multi-axis moving mechanism and the clamping jaw of the present invention.

[0037] Fig.16 : Structural diagram of the main pipe punching device of the present invention.

[0038] Fig.17 : Structural diagram of the punching assembly and the rotating fixing assembly of the present invention.

[0039] Fig.18 : Structural diagram of the second rotating fixed component of the present invention.

[0040] Fig.19 : Structural diagram of the fixed claw of the present invention.

[0041] Fig. 20 : Structural diagram of the load-bearing assembly of the present invention.

[0042] Fig.21 : Overall structural diagram of the main pipe end cover installation device of the present invention.

[0043] Fig. 22 : Partial structural diagram of the main pipe end cover installation device of the present invention.

[0044] Fig.23 : The mounting assembly structure of the present invention Figure 1 .

[0045] Fig.24 : The mounting assembly structure of the present invention Figure 2 .

[0046] Fig.25 : Structural diagram of the end cap transfer assembly of the present invention. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0048] Please refer to Figure 1-25 ;

[0049] The production line of the present invention aims to realize the fully automatic production of metal exhaust pipes, reduce human intervention and improve production efficiency, and specifically includes a main pipe forming line, a short pipe forming line and an assembly device. The main pipe forming line conveys the formed main pipe to the assembly device 5 through a transfer device 1 6, and the short pipe forming line conveys the formed short pipe to the assembly device 5 through a transfer device 2 8. The short pipe and the main pipe are fixed by the assembly device 5, and the short pipe is bent;

[0050] Further, the main pipe forming line includes a main pipe feeding device 91, a main pipe front end processing device 1, a main pipe punching device 2 and a main pipe end cover installation device 3 which are arranged in sequence, and the above devices are connected by a transfer device 3 7. It should be noted that the transfer device 1 6, the transfer device 2 8 and the transfer device 3 7 in this embodiment can be a structure combining a mechanical clamp and a conveyor belt, which is mainly used to transfer the main pipe and the short pipe between various devices, which belongs to the common technical means of the prior art and will not be described in detail here; the short pipe forming line includes a short pipe feeding device 92 and a short pipe corrugated forming device 4, wherein the corrugation of the short pipe is the most complicated and difficult. The existing corrugated forming equipment usually forms an indentation on the metal pipe by rolling, which looks like a corrugated shape, but has weak tensile strength and can only bend at a small angle. In addition, the gas pipe is relatively thin, and the exhaust pipe is easily deformed and the pipe wall is torn by rolling; in this embodiment, this part is emphatically described;

[0051] Reference Figure 2 Specifically, the push component 41 and the forming component 42, the forming component 42 in this embodiment adopts a transverse extrusion method to make the tube wall bulge outward to form corrugations, refer to Figure 3 The structure used includes a fastening component 1 43 and a fastening component 2 44 which are arranged at intervals, an expansion claw 45 located between the two, a conical surface is arranged on the outer periphery of the expansion claw 45, and a pull rod 2 is passed through the inside thereof, and the two ends of the pull rod extend to the outside and are connected to the driver 9 48, and the fastening component 1 43 and the fastening component 2 44 are connected to the driver 10 491 and the driver 11 492 respectively;

[0052] During operation, the push component 1 41 fixes one end of the short tube and pushes it into the forming component 42, the short tube passes through the fastening component 1 43 and the fastening component 2 44 in turn, the expansion claw 45 penetrates into the short tube, and then the fastening component 1 43 and the fastening component 2 44 start to move to clamp the short tube. At the same time, the push component 1 41 loosens the short tube, the driver 9 48 drives the pull rod 2 to move, and the pull rod 2 links the expansion claw 45 to expand it outward, that is, its outer diameter increases to push the wall of the short tube from the inside to the outside, and a conical protrusion is formed between the fastening component 1 43 and the fastening component 2 44, and the conical protrusion is the initial shape of the corrugation. shape, providing a guide template for further forming, then the fastening component 1 43 and the fastening component 2 44 are pushed closer to each other by the driver 10 491 and the driver 11 492. Since the short tube is clamped, the conical protrusion will be squeezed and flattened when approaching each other. Of course, the flattening here does not mean that the two side surfaces fit each other, but that they are as close as possible and a certain gap is reserved, thus completing a corrugation forming operation; then the expansion claw 45 is reset to reduce the outer diameter, and the pushing component 1 41 fixes the short tube again to change its position, and then repeats the above action to complete the forming of the next corrugation, and so on.

[0053] The wall thickness of the short tube described in the present invention is 0.5mm-1.5mm. By forming convex corrugations outward, it has better ductility and can have a larger bending angle when bent, which is comparable to plastic corrugated tubes. In addition, it is formed by lateral compression, which can reduce friction on the short tube compared to extrusion molding, avoid thinning of the tube wall, and avoid tearing of the tube wall during rolling molding.

[0054] There are two structures of the expansion claw 45;

[0055] The first method, refer to Figure 4 and Figure 5 The expansion claw 45 is composed of a plurality of floating blocks 451 in an annular array. The outer periphery of the floating block 451 is fastened by an annular tension spring (not shown). A conical surface is provided on the floating block 451. A conical contact head 47 is provided at the end of the second pull rod. When the second pull rod is pulled, the conical contact head 47 will shrink toward the inner cavity enclosed by the floating blocks 451, thereby pushing the plurality of floating blocks 451 outward to increase the outer diameter.

[0056] The second method includes a hollow support shaft, through which the pull rod 2 is inserted, and a plurality of limit grooves connected to the interior are provided in an annular array on the outer periphery of the support shaft, in which a floating block is provided, one end of the floating block extends to the interior, and one end of the floating block is provided with an inclined clamping portion, and the outer periphery of the pull rod 2 is provided with an inclined clamping groove that cooperates with the clamping portion, and the floating block is limited to only longitudinal movement. The inclined clamping groove of the pull rod 2 is pushed higher and higher, so that the floating block can be pushed out, and vice versa, the inclined clamping groove is lowered, and the floating block will also drop and reset. For details, please refer to the method of rotating and fixing component 2 in the following "main punching device", such as Fig.19 As shown, it should be noted that the conical surface is provided on the floating block, but the conical surface is not shown in the drawings, so the drawings are only used as structural examples for explanation and should not be used as a limitation on the scope of protection.

[0057] The fastening component 1 43 and the fastening component 2 44 in the present invention have the same structure. The fastening component 2 44 will be used as an example for explanation below, referring to FIGS. 3 and 4. Figure 4 , specifically including a moving plate 441, on which cylinders 442 are respectively installed on the upper and lower sides of the moving plate 441, and two fastening plates 448 are longitudinally slidably connected on the end surface of the moving plate 441, and a semicircular forming groove 443 is provided on the side where the two fastening plates 448 are close to each other; when the short tube is inserted, it is located between the two semicircular forming grooves 443, and then the two cylinders 442 respectively push the two fastening plates 448 close to each other, and form a circular limiting groove 453 to clamp the short tube; preferably, an air avoidance groove 444 is provided in the semicircular forming groove 443, and after completing one corrugated protrusion, when entering the next corrugated protrusion forming process, the previous corrugated protrusion can enter the air avoidance groove 444, such a design can make two adjacent corrugated protrusions close to each other, that is, form a continuous state of wave crests and wave troughs without interruption, which is more conducive to large-angle bending.

[0058] Furthermore, it also includes a fixing plate 2 445 and a fixing plate 3 446, and the fixing plate 2 445 and the fixing plate 3 446 are connected by a plurality of guide columns 447, and the plurality of guide columns 447 pass through the fastening component 1 43 and the fastening component 2 44, and play a role of limiting and guiding the two. The driver 10 491 and the driver 11 492 are respectively installed on the fixing plate 2 445 and the fixing plate 3 446. Preferably, the driver 10 491 and the driver 11 492 can be devices such as cylinders and electric cylinders that can output power in a linear manner.

[0059] Based on the first mode of the expansion claw 45, one of the embodiments of the driver nine 48 specifically includes a cylinder eight 481 and a guide cylinder 482 installed on a fixed plate three 446. The guide cylinder 482 is connected to the expansion claw 45 through a plurality of claws 483. In this embodiment, each claw 483 corresponds to two adjacent floating blocks 451. The enclosure shape and the range of motion of the plurality of floating blocks 451 are limited by the claws 483 so that they can only move longitudinally relative to the claws 483, that is, expand outward. The cylinder eight 481 is connected to the pull rod two through the connecting piece four 484. The pull rod two penetrates the guide cylinder 482 and extends to the expansion claw 45. The cylinder eight 481 drives the pull rod two to extend and retract, so that the pull rod two drives the conical contact head 47 to enter and exit the enclosure space of the plurality of floating blocks 451, thereby expanding the outer diameter thereof.

[0060] One embodiment of the push component 41 of the present invention is shown in FIG. Figure 6 , specifically including a bracket three 411, a driver twelve 412 and a support bracket are installed in the bracket three 411, the moving end of the driver twelve 412 is connected to an extension rod 414, an air gripper four 415 is installed at the end of the extension rod 414, the air gripper four 415 is provided with a plurality of action ends in a circular array, the action end is connected to a resistance part two 416, and the support bracket is provided with a plurality of rollers four 417 along the moving direction of the short tube;

[0061] First, the short tube falls into the support frame, and then the driver twelve 412 drives the extension rod 414 and the air claw four 415 to penetrate into the short tube. When it reaches a certain position, the air claw four 415 pushes the interference part two 416 to extend horizontally, so that several interference parts two 416 are in conflict with the inner wall of the short tube to achieve fixation. Preferably, the air claw four 415 is a circular air claw. Then the driver twelve 412 is started again to continue to move forward. At this time, the short tube can be pushed to move and enter the forming component 42. Since the short tube will shrink during the process of forming the corrugation, the air claw four 415 releases the fixation of the short tube after pushing the short tube to the position. After completing a corrugated bulge processing, the air claw four 415 extends the interference part two 416 again to fix the short tube, and the driver twelve 412 is started again to change the position of the short tube.

[0062] In another embodiment, the resistance end of the resistance part 2 416 is in an arc shape, and the external force applied by the air claw 415 to the inner wall of the short tube is not large. On the contrary, the contraction force of the fastening parts 1 43 and 2 44 when forming the corrugated protrusion is much greater than the friction force between the resistance part 2 416 and the inner wall of the short tube. Therefore, in this embodiment, the air claw 4 415 does not contract when forming the corrugated protrusion, and maintains a state of resistance with the inner wall of the short tube, which can also pull the short tube to contract, thereby reducing the control steps.

[0063] In the present invention, there are multiple molding components 42. Under normal circumstances, the number of pushing components 41 corresponds to one by one, but more parts are needed. In order to simplify the structure, every two molding devices correspond to one pushing component 41. More specifically, they share a driver twelve 412. The driver twelve 412 can be a combination of a motor and a pulley group. A connecting block is provided on the pulley group. The driver twelve 412 is arranged in the middle. The extension rod 414 is "L"-shaped, and the two extension rods 414 are respectively connected to the connecting block.

[0064] Furthermore, the support frame is composed of two bearing plates 4131, one side of the two bearing plates 4131 is provided with a transmission rod 4132, the transmission rod 4132 is rotatably connected to the bracket 2, one end of the transmission rod 4132 is fixedly connected to a transmission block 1 4133, the transmission block 1 4133 is provided with a pulley 4134, the pulley 4134 is placed on the movable groove 4135 of the transmission block 2 4136, the transmission block 2 4136 is arranged at the output end of the cylinder 9 4137, and the cylinder 9 4137 Installed on bracket two, transmission block two 4136 is driven by cylinder nine 4137 to move, so that pulley 4134 moves between interactive grooves, thereby changing the angle of transmission block one 4133, and at the same time linking transmission rod 4132 to rotate, so as to realize the opening and closing of two bearing plates 4131. A conveying device 493 is provided under the support frame, and the processed short tube is pulled out into the support frame, and then the support frame is opened to make the short tube fall into the conveying device 493 and be transported to the next process flow.

[0065] In addition, a pre-placement position 418 is provided above the support frame, and the pre-placement position 418 can be opened and closed. For details, reference can be made to the implementation method of the support frame. A short tube can be pre-stored on the top. After completing the processing of a short tube, the support frame releases the short tube to the conveying device 493, and the pre-placement position 418 located above releases the processed short tube into the support frame, thereby reducing waiting time and improving work efficiency.

[0066] One embodiment of the present invention regarding the assembly device is as follows Figure 7, specifically including a press-fit connection component 51, a first acquisition component 52 and a second acquisition component 53 are respectively arranged on both sides of the press-fit connection component 51, and the acquisition component 2 53 is connected to the push component 2 54; in this embodiment, there are many ways to acquire the main pipe and the short pipe, for example, during the transportation process, the main pipe and the short pipe are suspended respectively by mechanical clamps, and the acquisition component 1 52 and the acquisition component 2 53 are provided with structures similar to fixed claws to fix one end of the main pipe and the short pipe respectively; in the initial state, the acquisition component 1 52 and the acquisition component 2 53 are respectively located away from the press-fit connection component 51, and are in a horizontal state, reserving space for placing the main pipe and the short pipe. After the acquisition component 1 52 and the acquisition component 2 53 obtain the main pipe and the short pipe respectively, the acquisition component 1 52 pushes the main pipe to move so that one end of the main pipe is placed in the press-fit connection component 51, and at the same time, the acquisition component 2 53 pushes the short pipe to move so that one end of the short pipe is placed in the press-fit connection component 51. In the connection component 51, one end of the short tube is inserted into one end of the main tube. It should be noted that the inner diameters of the main tube and the short tube are generally the same, which can be understood as dividing a metal tube into two. However, the end of the main tube has been expanded in the previous step, so that the inner diameter of the end of the main tube is slightly larger than the outer diameter of the short tube. After one end of the short tube is inserted into one end of the main tube, the outer wall of the short tube is close to the inner wall of the main tube, and then the press-fit connection component 51 is closed to clamp the connecting end of the main tube and the short tube. The inner diameter of the clamping position enclosed by the press-fit connection component 51 is slightly smaller than the outer diameter of the end of the main tube, so that the connecting end of the main tube and the short tube is slightly reduced. At the same time, the indentation flange 515 forms a dent at the connecting end to fix the main tube and the short tube. It should be noted that the indentation flange 515 is in the shape of a circular ring, which is adapted to the outer peripheral shape of the main tube. When the press-fit connection component 51 is closed, the indentation flange 515 can evenly apply pressure to the surface of the main tube to avoid deformation.

[0067] At this time, the pressing connection component 51 maintains a pressed and fixed state, so that one end of the short tube is fixed, and the other end is fixed by the acquisition component 2 53. The connection method of the acquisition component 2 53 is that one end is rotatably connected to an external fixed component, and the other end is a free end. The fixed component is not limited. For the sake of compact structure, it is preferably rotatably connected to the pressing connection component 51. Then the pushing component 2 54 pushes the acquisition component 2 53 to rotate a certain angle, that is, drives the other end of the short tube to rotate a certain angle. At this time, the corrugated part on the short tube will make corresponding changes to realize bending and forming.

[0068] Finally, obtain component 1, obtain component 2 53, and press-fit connection component 51 to loosen and reset the formed metal exhaust pipe, and take out the metal exhaust pipe through the unloading device to complete the entire forming process.

[0069] The present invention can realize the two steps of fastening the main pipe and the short pipe and bending the short pipe through the mutual cooperation of various components, and can form them in one step without separate operations. At the same time, it provides a final forming solution for the automatic production line, laying a solid foundation for fully automatic production.

[0070] One embodiment of the press-fit connection assembly 51 of the present invention is shown in FIG. Figure 8 , specifically comprising a fixed platform 511, on which two forming blocks 512 for use are slidably connected, and a driver thirteen for pushing the two forming blocks 512 to move, the two forming blocks 512 are combined to form a fixed position 1 514, and the two forming blocks 512 can be opened and closed by sliding and cooperating with the driver thirteen, the two forming blocks 512 have a semicircular groove, and the semicircular groove is located to enclose the fixed position 1 514, and the indentation flange 515 is also divided into two parts, which are respectively arranged on the inner wall of the semicircular groove;

[0071] Furthermore, two sliding pairs 5134 are provided on the fixed frame, and the two sliding pairs 5134 are slidably connected to the plate 5135. The plate 5135 is arranged at the bottom of the forming block 512, which can better limit the moving direction of the forming block 512. Preferably, the connecting end of the forming block 512 is provided with a concave and convex position, which can align and close the two forming blocks 512.

[0072] Due to the limited space, the driver thirteen in this embodiment adopts a rotational driving method to drive the two forming blocks 512 to realize the opening and closing action, specifically including the output end of the rotating cylinder two 5131 is connected to the transmission block three 5132, the two ends of the transmission block three 5132 are respectively rotatably connected to the transmission blocks four 5133, the two transmission blocks four 5133 are respectively rotatably connected to the two forming blocks 512, and the rotating cylinder two 5131 drives the transmission block three 5132 to rotate and change the position of the transmission block four 5133, so that the transmission block pulls or pushes the forming block 512, that is, the opening and closing action is realized. Of course, based on the above embodiment, the transmission block four 5133 can be rotatably connected to the plate 5135.

[0073] In addition, in order to enhance the tightness of the two forming blocks 512, it is necessary to apply pressure to them from the outside. In the present embodiment, cylinders 5161 are longitudinally arranged on both sides of the two forming blocks 512, and movable blocks 5162 are installed at the output ends of the cylinders 5161. Rollers 5163 are arranged at the ends of the movable blocks 5162. The movable blocks 5162 in the present embodiment are horizontally placed. In the initial state, the movable blocks 5162 are located above the forming blocks 512. If the cylinders 5161 drive the movable blocks 5162 to move downward at this time, the lower end faces thereof will collide with the upper end faces of the forming blocks 512, and the purpose of applying external force to them cannot be achieved. Therefore, after the two forming blocks 512 are closed, space for the movable blocks 5162 to descend is given. At this time, the cylinders 5161 drive them to descend, and at the same time, the rollers 5163 collide with the sides of the forming blocks 512 to apply external force to them to keep them close to each other, so as to avoid looseness.

[0074] One embodiment of the present invention regarding obtaining component 2 53, referring to Fig. 9 , specifically including a bracket four 531, preferably, one end of the bracket four 531 is rotatably connected to the fixed platform 511, and a driver fourteen 532 is installed on the bracket four 531. In this embodiment, the driver fourteen 532 is a combination of a cylinder and a guide rail, and a fixed block 533 is installed on the movable end of the driver fourteen, and the fixed block 533 is rotatably connected to a fixed cylinder 534. Preferably, the fixed block 533 is slidably connected to the side of the bracket four 531, and a position adapted to the end of the short tube is provided in the fixed cylinder 534 so that it can enter, and a limiting member 535 is provided on the outer side of the fixed cylinder 534. When in the loading state, the fixed cylinder 534 needs to be in a horizontal position to be aligned with the short tube. At this time, the limiting member 535 conflicts with both sides of the bracket four 531 to limit its position;

[0075] In this embodiment, there is no position for placing the short tube, so when loading, the short tube is suspended in the bracket four 531 by a mechanical clamp, and then the driver fourteen 532 pushes the fixed cylinder 534 to move in the direction of the short tube, and finally the end of the short tube is fixed by the fixed cylinder 534; when a bending angle is required, the fixed cylinder 534 will rotate a certain angle relative to the fixed block 533, and adjust adaptively, and at the same time, the limit member 535 is disengaged from the bracket four 531.

[0076] The pushing component 2 54 used in the present invention can be a cylinder or a combination of a cylinder and related components, which is a common technical means and will not be described in detail here.

[0077] Furthermore, due to the limitation of space, it is impossible to fix the expansion and contraction by means of fixed claws and pull rods. Moreover, since the air claws adopt a multi-point fixing method, the outer periphery of the short tube is subjected to uneven force, which is prone to dents. Especially when the angle changes during bending, it is more likely to cause deformation of the outer periphery of the short tube. Therefore, this embodiment adopts another method, referring to Fig.10Specifically, it comprises a cylinder 5341, an air cylinder eleven 5342 is arranged outside the cylinder 5341, an output end of the air cylinder eleven 5342 extends into the cylinder 5341, a conical groove 5343 is formed in the cylinder 5341, an opening of the conical groove 5343 gradually expands outward, a plurality of movable plates 5344 are arranged in a circular array on the inner wall of the conical groove 5343, that is, the plurality of movable plates 5344 are arranged in a circular array in an inclined manner, and the plurality of movable plates 5344 are arranged close to each other, a circular movable block two 5345 connected to the output end of the air cylinder eleven 5342 is arranged in the cylinder 5341, One end of the movable plate 5344 is clamped with the movable block in the form of an annular flange 5348 and an arc-shaped groove 5349. The tight connection between the movable plates 5344 limits them from moving left and right, but they can float up and down. However, the arc-shaped groove 5349 and the annular flange 5348 will not separate. The other end extends out of the cylinder 5341 and forms a fixed position 5346. There is a gap 5347 between the movable plates 5344 at one end near the movable block. Preferably, when one end has a gap 5347, the part extending out of the fixed cylinder 534 is closed.

[0078] The second fixing position 5346 is used to clamp and fix the end of the short tube. Before clamping, the inner diameter of the second fixing position 5346 needs to be expanded. When it is in action, the cylinder eleven 5342 pushes the movable block forward. At this time, there is a small gap 5347 between the movable plate 5344 and the inner wall of the conical groove 5343, so that the movable plate 5344 has floating space. When the short tube enters, the inner diameter of the second fixing position 5346 can be adjusted by utilizing these floating spaces so that the short tube can enter smoothly. It should be noted that the floating margin is very small, and the entrance of the second fixing position 5346 is trumpet-shaped, so that several movable plates 5344 will not deviate. In addition, in order to achieve "conical" distribution and "snapping", several movable plates 5344 are not straight, but have curvature. Assuming that the entrance of the second fixing position 5346 is expanded, the inner diameter of the "circle" enclosed at the other end will become smaller. Therefore, it is very important to provide a gap 5347 between adjacent movable plates 5344 at the other end to provide space for movement.

[0079] After the short tube enters the fixed position 2 5346, the cylinder 11 5342 pulls the movable block backward, and all the movable plates 5344 follow and retreat to contact the inner wall of the conical groove 5343, and are fixed at the inner diameter of the fixed position 2 5346, and the end of the short tube is clamped.

[0080] One embodiment of the present invention regarding obtaining component 52 is shown in FIG. Figure 8, specifically including a conveying channel 521, along the extension direction of the conveying channel 521, a plurality of rollers 522 are arranged on both sides thereof, one end of the conveying channel 521 is close to the pressing connection component 51, and the other end is provided with a push plate 523, which can abut against the end of the main pipe, and the push plate 523 is connected to the cylinder 12 524, and the push plate 523 is driven by the cylinder 12 524 to move toward the pressing connection component 51, and abuts against the main pipe to promote its movement.

[0081] Preferably, the end surface of the push plate 523 is also provided with a profiling block 525 adapted to the end cover, which can enter the end cover to better apply external force and prevent the main pipe from being deformed.

[0082] In the embodiment of the present invention, a detection device 55 for detecting cracks in the short tube is also included.

[0083] One embodiment of the present invention regarding the main front end processing device is as follows Fig.11 The front processing steps of the main pipe mainly include caliber expansion and outer side pressing, and these two processes are respectively handled by the diameter expansion mechanism 12 and the side pressing mechanism 13. A plurality of linearly distributed clamping jaws 14 are installed on the multi-axis moving mechanism 11. For example, the diameter expansion mechanism 12 and the side pressing mechanism 13 are distributed with two processing positions, then there are four clamping jaws 14 corresponding to the processing positions, and there are two additional clamping jaws 14 located on the outside, that is, there are six clamping jaws 14 in total, and the multi-axis moving mechanism 11 has at least X-axis and Z-axis moving directions, so that the clamping jaws 14 can realize progressive action for loading and unloading and material transfer;

[0084] Assuming that there are two main pipes for processing in the diameter expansion mechanism 12, it is mainly to form enough space for the subsequent combination with the short pipe. Therefore, it is only necessary to expand the diameter of one end of the main pipe, omitting unnecessary working steps. There are two main pipes for processing in the edge pressing mechanism 13, which mainly changes the overall stress structure of the main pipe, splits it into two so that it is not easy to bend. When the two ends are subjected to external force, the external force will eventually be concentrated at the flattened position, and the flattened position is the position with the highest strength of the entire main pipe, which can play a role in strengthening the structure; and the edge pressing formed on the outside of the main pipe also has a decorative effect, so that the whole will not be too monotonous; when it is necessary When loading and unloading, the multi-axis moving mechanism 11 drives several clamps 14 to descend, the two clamps 14 located on the outside grab two main pipes to be processed, and the remaining clamps grab the main pipes in the diameter expansion mechanism 12 and the edge pressing mechanism 13 respectively. Then, the multi-axis moving mechanism 11 is actuated to cause several clamps 14 to be dislocated, and the main pipe to be processed enters the diameter expansion mechanism 12, the main pipe in the diameter expansion mechanism 12 enters the edge pressing mechanism 13, and the main pipe in the edge pressing mechanism 13 enters the fixed placement seat 2 152 for unloading. The stepping movement method can realize the position change of all materials through one movement, effectively improving the production efficiency.

[0085] It should be noted that, since the main pipe has a certain length, in order to stably transfer the material, the clamping jaws 14 are distributed front and back in groups of two.

[0086] One embodiment of the diameter expansion mechanism 12 of the present invention is shown in FIG. Fig.12 and Fig.13 , specifically comprising a base 121, a translation assembly 122 is installed at one end of the base 121, an expansion assembly 123 is installed on the translation assembly 122, the expansion assembly 123 includes at least one expansion head 124 entering the main pipe, and a fixed assembly 125 is installed at the other end of the base; in this embodiment, the number of workstations is not limited, if there are two workstations, then there are two expansion heads 124;

[0087] When loading, the clamping jaw 14 keeps the clamping state to place the main pipe on the work station, and then the fixing component 125 and the expanding component 123 approach the two ends of the main pipe respectively, and finally the fixing component 125 fixes one end of the main pipe, and the expanding head 124 enters the main pipe from the other end; the expanding head 124 in this embodiment has three implementation modes;

[0088] In the first embodiment, the outer diameter ratio of the enlarging head 124 is the same as the inner diameter of the main pipe, and the enlarging head 124 enters from one end of the main pipe by hard plugging and squeezing under the drive of the first translation assembly 122, thereby enlarging its diameter;

[0089] In the second embodiment, the enlarging head 124 is a lotus head, which is initially in a contracted state, i.e., the outer diameter is smaller than the inner diameter of the main pipe, so that it can easily enter the interior. Then, the conical head is contracted to allow it to enter the lotus head, and the lotus head will expand the outer diameter, thereby expanding the main pipe to achieve the purpose of expanding the diameter. After the conical head is pushed out, the lotus head will contract and reset, and the outer diameter will become smaller, making it easy to enter and exit.

[0090] In the third embodiment, the end of the expanding head 124 has a conical surface, and a driver 1 is installed in the expanding assembly 123. The expanding head 124 is driven by the driver 1 to rotate and gradually enter the interior of the main pipe to gradually expand the diameter. Such a slow expansion can slowly stretch the metal to avoid cracks.

[0091] Based on the further expansion of implementation mode 3, refer to Fig.13The expansion component 123 includes a mounting seat 1231, and the mounting seat 1231 is located on the translation component 122. One side of the mounting seat 1231 is rotatably connected to two expansion heads 124, wherein the driver includes a rotating shaft 1232 respectively penetrated through the two expansion heads 124 and extends to the other side of the mounting seat 1231. The rotating shaft 1232 is fixed with a driven gear 1233, and a transmission gear 1234 is meshed between the two driven gears 1233. The transmission gear 1234 is connected to a driving motor 1235, and the driving motor 1235 is arranged on the mounting seat 1231. The transmission is transmitted by gear meshing, which can reduce the loss of torque. At the same time, the two expansion heads 124 can be driven to rotate by one motor, thereby reducing the use of parts.

[0092] One embodiment of the fixing assembly 125 of the present invention specifically includes a fixing seat 1251, on which an air gripper 1252 is horizontally slidably mounted, the air gripper 1252 being connected to a cylinder 1 (not shown), a clamping block 1253 being mounted on the action end of the air gripper 1252 to prevent the edge of the main pipe from being deformed when clamped, an arc-shaped clamping portion 1254 is formed on opposite sides of the two clamping blocks 1253 to adapt to the edge of the main pipe, a supporting plate 1255 is provided below the clamping block 1253, and an arc-shaped groove 1236 is provided on the supporting plate 1255; first, the main pipe is clamped and placed in the processing position, at which time the air gripper 1252 is not pushed out, and the main pipe can be placed in the arc-shaped groove 1236, and then the clamping jaw is pushed out by the cylinder 1, and then the clamping jaw contracts to clamp the edge of the main pipe, and is combined with the supporting plate 1255 to form two fixed points to maintain the direction of the main pipe.

[0093] One embodiment of the edge pressing mechanism 13 of the present invention is shown in FIG. Fig.14 , specifically comprising a second base 131, a supporting assembly 132 is installed at one end of the second base 131, a second translation assembly 133 is installed at the other end, and a pressing assembly 134 is installed on the second translation assembly 133; in this embodiment, the supporting assembly 132 can refer to the method of the fixing assembly 125, but the usage method is different from that of the fixing assembly 125, which will be explained below;

[0094] The edge pressing assembly 134 includes a second driver 1341. In this embodiment, the second driver 1341 can refer to the implementation of the first driver. The output end of the second driver 1341 is provided with a forming cylinder 1342. The outer periphery of the forming cylinder 1342 is provided with a groove 1343. The groove 1343 is used in conjunction with a rolling wheel 1344. The rolling wheel 1344 is rotatably connected to a movable plate 1345. The movable plate 1345 is connected to a vertically installed cylinder 2 1346. Of course, the second mounting seat can extend upward to form a vertical plate 1347. The movable plate 1345 is slidably connected to the vertical plate 1347, and the position of the second cylinder 1346 is fixed.

[0095] First, the clamping state is maintained by the clamping claw 14 and placed at the edge pressing mechanism 13, one end of which is placed at the supporting component 132 but not fixed. At this time, there is a gap between the forming cylinder 1342 and the buffer wheel 1351. Driven by the translation component 2 133, the forming cylinder 1342 is pushed into the main pipe, and then the clamping claw releases the main pipe. At this time, the outer wall of the main pipe is located between the two buffer wheels 1351. The buffer wheel 1351 is installed on the bracket 1 1352, and the bracket 1 1352 is located on the mounting seat 2; the cylinder 2 1346 pushes the movable plate 1345 downward to make the rolling wheel 1344 contact with the outer wall of the main pipe, and the corresponding forming The groove 1343 of the cylinder 1342 makes the rolling wheel 1344 and the forming cylinder 1342 form a clamping state, and then the forming cylinder 1342 rotates under the drive of the second driver 1341, and the friction force is used to make the main pipe rotate synchronously so as to form a pressure edge on the outside of the main pipe. In this process, the main pipe will be more or less deformed, and the central axis 1354 of the cache wheel passes through the strip hole 1353, and the gap range is expanded or reduced under the action of the strip hole 1353 and the reset member 1355, so as to adapt to the shape change of the main pipe. The reset member 1355 can be a spring. The specific setting method depends on the actual situation. For details, please refer to the attached drawings.

[0096] After the groove 1343 is formed, the forming tube 1342 cannot be directly withdrawn, so the supporting component 132 extends to clamp and fix one end of the main tube, and then the second translation component 133 drives the whole body backward, and the main tube is slightly deformed so that the forming tube 1342 can be withdrawn therefrom.

[0097] One embodiment of the present invention regarding the clamping jaw 14 is shown in FIG. Fig.15 , specifically including an air gripper 141, an arc-shaped clamping arm 142 is provided at the action end of the air gripper 141, and a plurality of rollers 143 protruding from the inner side are provided on the arc-shaped clamping arm 142. In this embodiment, the rollers 143 are respectively arranged at the ends and corners of the clamping arms, and the two arc-shaped clamping arms 142 are combined to form a slot slightly larger than the main pipe. When the main pipe needs to be clamped, the roller 143 at the end rotates in sync with the outer wall of the main pipe and pushes the main pipe into the clamping position, which can avoid hard contact to cause dents on the surface of the main pipe, and the other roller 143 located on the top is combined with the two rollers 143 below to achieve the effect of clamping and fixing.

[0098] Based on another embodiment of the structure in which a plurality of rollers 143 are arranged on the arc-shaped clamping arm 142, when position switching is performed, the multi-axis moving mechanism 1 does not need to drive the clamping jaws to move up and down multiple times. For example, when the edge pressing is performed, the main tube needs to rotate. At this time, the clamping jaws keep clamping the main tube. At this time, the plurality of rollers 1 are in conflict with the main tube. When the main tube rotates, the roller 1 will also rotate with it without hindering the processing of the main tube. After the processing is completed, the position switching is performed. In this process, the multi-axis moving mechanism 1 will only move up and down when the position is switched. The traditional method requires up and down movement once after the loading is completed, and up and down movement again after the processing is completed. Therefore, the use of the structure described in the present invention can reduce the movement frequency of the multi-axis moving mechanism 1, shorten the action time, and improve the operating efficiency.

[0099] In the embodiment of the present invention, two independently liftable placement seats 151 are provided on one side of the diameter expansion mechanism 12. The lifting function is mainly to adapt to the loading position. After the loading is completed, the placement seat 151 is lifted so that the clamping jaw 14 can obtain the main pipe. Two fixed placement seats 152 are provided on one side of the edge pressing mechanism 13. The main pipe that has completed the preliminary processing enters the fixed placement seat, and then enters the next process.

[0100] One embodiment of the main pipe punching device of the present invention is as follows Fig.16 , specifically including a punching assembly 21 and a second rotating and fixing assembly 22, which correspond to the two ends of the main pipe respectively, and a bearing assembly 23 is provided between the two, and a conveying assembly (not shown) is installed below the bearing assembly 23; when working, the main pipe is placed on the bearing assembly 23 through the loading assembly, so that the two ends of the main pipe correspond to the punching assembly 21 and the second rotating and fixing assembly 22 respectively, and then the third translation assembly drives the rotating and fixing assembly to move toward the punching assembly 21, and the second rotating and fixing assembly 22 fixes the main pipe after contacting it, and pushes it to move toward the stamping assembly, and finally the other end of the main pipe enters the punching position;

[0101] Then the punching assembly 21 punches the main pipe. At the same time, after completing one punching operation, the rotating fixing assembly 22 will drive the main pipe to rotate and adjust the angle. For example, if six holes need to be punched on the surface of the main pipe, the rotating fixing assembly 22 will drive the main pipe to rotate five times. After completion, the translation assembly 3 drives the rotating fixing assembly 22 to move away from the punching assembly 21, and at the same time drives the main pipe to move so that one end of it withdraws from the punching position 214. Then the rotating fixing assembly 22 releases the other end of the main pipe and continues to retreat.

[0102] At this time, the punched main pipe is placed on the carrying assembly 23, and a conveying assembly is provided below the carrying assembly 23. The carrying assembly 23 is opened to allow the main pipe to fall into the conveying assembly, and then closed to wait for another main pipe to be processed.

[0103] The present invention is based on the special structure of the second rotating fixing component 22, which can fix the main pipe and drive it to rotate at the same time, realizing the function of switching the position of the main pipe, so that it can perform uniform drilling operation on the surface to meet the processing requirements;

[0104] In addition, the carrying component 23 can naturally drop the processed main pipe into the conveying component through the opening and closing function, without having to take it out from the carrying component 23, thereby improving the efficiency of loading and unloading.

[0105] One embodiment of the present invention regarding the second rotating fixing assembly 22 is shown in FIG. Fig.17 and Fig.18 , specifically including a moving seat 221, on which a driver three 222 is installed, a rotatably connected fixed claw 223 with a resettable cylinder three 2241, a pull rod one 2251 is passed through the fixed claw 223, and the fixed claw 223 in this embodiment can expand to expand the outer diameter, and contract to reset it, the pull rod one 2251 passes through the fixed claw 223 and is connected to the output end of the cylinder three 2241 through a connecting piece one 2242, preferably, the pull rod one 2251 needs to rotate with the fixed claw 223, so the pull rod one 2251 and the connecting piece one 2242 are rotatably connected, the driver three 222 and the fixed claw 223 are transmission-connected, in one embodiment, the fixed claw 223 is divided into a movable part and a fixed part, wherein the movable part is used for the action of expansion and contraction, and the fixed part passes through the moving seat 221, and a bearing is provided between the two to make it rotate smoothly, and the fixed part passing through the moving seat 221 is connected to the driver three 222;

[0106] In the initial state, the fixed outer diameter is smaller than the inner diameter of the main pipe, so it can enter the main pipe, and then the cylinder three 2241 pulls the pull rod one 2251. For example, the end of the pull rod one 2251 is provided with a conical resistance part. The pull rod one 2251 is retracted to make the resistance part enter the fixed claw 223 to make it expand, that is, the outer diameter becomes larger and contacts with the inner wall of the main pipe to achieve fixation. While maintaining this state, the driver three 222 drives the fixed claw 223 to rotate, and the pull rod one 2251 rotates synchronously with the connecting piece one 2242 to achieve the rotation of the main pipe. After completion, the cylinder three 2241 pushes the pull rod one 2251 out, that is, the resistance part is pushed out of the fixed claw 223 to reset it, that is, the outer diameter of the fixed claw 223 is reduced to make it smaller than the inner diameter of the main pipe, so that it can withdraw from the main pipe.

[0107] This embodiment is further described with reference to the fixing claw 223. Fig.19Specifically, it includes a hollow connecting shaft 2231, the hollow position of the rotating shaft is for the pull rod 2251 to penetrate, and a plurality of limiting grooves 2232 connected to the interior are arranged in an annular array on the outer periphery of the connecting shaft 2231, and a floating block 2233 is arranged in the limiting groove 2232, and one end of the floating block 2233 extends to the interior; preferably, the limiting groove 2232 adopts a fan-shaped design, so the floating block 2233 is also a fan-shaped structure, and the other end of the floating block 2233 extends to the outside to form an arc-shaped contact part 2234, and in the initial contraction state, the plurality of arc-shaped contact parts 2234 are close to each other to form a cylindrical covering on the outer periphery of the connecting shaft 2231 When expanded, several floating blocks 2233 move outward to expand the outer diameter, that is, gaps are formed between several arc-shaped contact parts 2234. The larger the gap, the larger the outer diameter. However, even after the arc-shaped contact part 2234 has a gap, it still forms a cylindrical outline. External force is uniformly applied in all directions of the inner diameter of the main pipe, which can increase the contact area and prevent the main pipe from deforming. One of the reset methods of the floating block 2233 is to set a circular tension spring on the outer periphery to tighten it. Of course, this requires the provision of an embedded groove to prevent protrusion from deforming the main pipe. When subjected to external force, several floating blocks 2233 are stretched open, and when the external force is removed, they shrink and reset under the action of the tension spring.

[0108] The present invention proposes another action mode of the floating block 2233, one end of the floating block 2233 is provided with an inclined clamping portion 2235, and the outer periphery of the pull rod 1 2251 is provided with an inclined clamping groove 2252 that cooperates with the clamping portion 2235, that is, the floating block 2233 and the pull rod 1 2251 are connected, and the floating block 2233 will not be separated from the pull rod 1 2251 by the clamping method; different from the above-mentioned usage mode, the cylinder three 2241 pushes the pull rod 1 2251 to eject the floating block 2233; firstly, the floating block 2233 is limited to only longitudinal movement, when the cylinder three 2241 pushes the pull rod 1 2251, the inclined clamping groove 2252 on the pull rod 1 2251 becomes higher and higher, thereby the floating block 2233 can be ejected, and vice versa, the inclined clamping groove 2252 becomes lower and lower, and the floating block 2233 will also drop and reset.

[0109] Due to the setting of the bearing component 23, the fixed claw 223 will not contact the main pipe during the process of entering it. In order to speed up the material withdrawal, a cylinder 226 is installed on the movable seat 221. The output end of the cylinder 226 is connected to a push plate 227. A hole is provided in the push plate 227 for the fixed claw 223 to pass through. The inner diameter of the hole is adapted to the outer diameter of the fixed claw 223. Therefore, the push plate 227 can push the main pipe out. Specifically, after the punching is completed, when the main pipe reaches the position of the bearing component 23, the rotating fixed component 22 retreats as a whole, the fixed claw 223 contracts, and the cylinder 226 is actuated to move the push plate 227 forward to press against the end of the main pipe, so that the main pipe maintains its current position and avoids it from deviating from its position when the rotating fixed component 22 retreats as a whole.

[0110] One embodiment of the present invention regarding the bearing assembly 23 is shown in FIG. Fig. 20 Specifically, it includes two brackets 231 arranged opposite to each other, each bracket 231 is rotatably connected to two supporting arms 2321, and a total of four supporting arms 2321 are arranged on the two brackets 231. The two opposite supporting arms 2321 form a group, and each supporting arm 2321 is provided with a second obliquely arranged bar hole 2322, and a movable rod 2323 is passed through the second bar hole 2322, and the movable rod 2323 passes through a third vertically arranged bar hole 2324, and the third bar hole 2324 is arranged on the bracket 231, and the bracket 23 1 is provided with a cylinder five 2325, and the cylinder five 2325 is connected to the two ends of the movable rod 2323 through the connecting piece two 2326; the cylinder five 2325 drives the connecting piece two 2326 to move, so that the movable rod 2323 moves vertically up and down along the strip hole, and at the same time changes the position of the movable rod 2323 in the strip hole two 2322, so that it can realize the opening and closing action; preferably, the cylinder five 2325 is vertically arranged, and its output end is connected to a beam, and the beam connecting section is connected to a connecting rod, and the two connecting rods are respectively connected to the two ends of the movable rod 2323.

[0111] In addition, a pre-placed space is provided on the bearing assembly 23, which can effectively improve the loading efficiency and reduce the waiting time. Specifically, a cylinder 6 2331 is horizontally provided on the two brackets 231, and the output end of the cylinder 6 2331 is connected to a movable plate 2332, and the two ends of the movable plate 2332 are connected to a supporting part 2334 through a fixed rod 2333, and the supporting part 2334 is located above the supporting arm 2321; when there is no main pipe at the supporting position, the supporting parts 2334 on the opposite sides are in a far away state, and the main The pipe enters the reserved position. After the main pipe falls into the supporting position, the supporting parts 2334 on both sides are driven by the cylinder 6 2331 to approach each other to form a pre-placement position. The loading component can put a main pipe in this pre-placement position. After the punching of the main pipe below is completed and released to the conveying component, the supporting arm 2321 is washed and closed again. Driven by the cylinder 6 2331, the supporting parts 2334 are moved away from each other and opened, so that the main pipe in the pre-placement position falls into the supporting position, and then closed again to form the pre-placement position.

[0112] Furthermore, both ends of the two brackets 231 are fixed by connecting pieces 3 2341 respectively, and guide channels 2342 are provided on the connecting pieces 3 2341 , and the guide channels 2342 correspond to the supporting positions formed by a plurality of supporting arms 2321 , or correspond to the pre-placed positions.

[0113] One embodiment of the punching assembly 21 of the present invention specifically includes a fixing seat 211, on which a driver 212 is installed. The driver 212 can be a hydraulic cylinder or an electric cylinder, etc. The output end of the driver 212 is connected to a plurality of punching needles 213. A punching position 214 is located below the punching needles 213, and a profiling cylinder 215 is provided inside the punching position 214. A plurality of guide holes for the punching needles 213 to pass through are provided on the punching position 214, and a plurality of leakage holes corresponding to the punching needles 213 are provided on the profiling cylinder 215. When the main pipe enters the punching position 214, the profiling cylinder 215 will also be inserted into the main pipe.

[0114] Preferably, the inner part of the profiling cylinder 215 is hollow and has an opening on one side, and the waste formed by punching will fall into the hollow position. In this embodiment, the profiling cylinder 215 is detachably connected to the punching position 214 and can be removed for cleaning.

[0115] One embodiment of the main pipe end cover installation device of the present invention is as follows Fig.21 , specifically including an end cap conveying assembly 31, a material shifting assembly 32 is provided at the end of the end cap conveying assembly 31, and an end cap transfer assembly 33 is provided at a position corresponding to the material shifting assembly 32. In this embodiment, the end cap conveying assembly 31 adopts a belt conveying method. During the conveying process, the end cap body is in a horizontal state. A notch for outputting the end cap body is provided at the end of the end cap conveying assembly 31, and the end cap transfer assembly 33 is located below the outer edge of the notch. Preferably, the material shifting assembly 32 is composed of a cylinder and a shifting rod. When the end cap body is conveyed to the position corresponding to the notch, the shifting rod is driven by the cylinder to move, and the shifting rod pushes the end cap body to move in the direction of the notch and fall into the end cap transfer assembly 33. In this process, the end cap body stands upright and enters the end cap transfer assembly 33;

[0116] At this time, the end cap transfer assembly 33 is in a position away from the installation assembly 34. At the same time, a placement position is provided in the installation assembly 34. The main pipe is placed therein through an external conveying device, and then the end cap transfer assembly 33 moves toward the installation assembly 34 and finally aligns the end of the main pipe. The end cap body in the end cap transfer assembly 33 is obtained through the installation assembly 34, and then the end cap transfer assembly 33 is reset to make the end cap body directly correspond to the end of the main pipe. Finally, the installation assembly 34 pushes the end cap body to the end of the main pipe to complete the installation. The above method realizes the automated production operation of the main pipe and the end cap, provides a solution for the fully automated production of the exhaust pipe, and improves production efficiency.

[0117] There are two ways to install the end cover body and the main pipe in the present invention. The first way is through interference fit. When the installation component 34 pushes the end cover body into the end of the main pipe, it is squeezed and fixed by deformation. The second way is through laser welding. A resistance welding component (not shown) is provided at the corresponding installation position. The installation component 34 is provided with a rotating component 36. After the installation component 34 pushes the end cover body into the main pipe, the installation component 34 contacts the end cover body and fixes it, only against the end cover body to prevent it from falling. Then the resistance welding component welds the main pipe and the end cover body. At the same time, the rotating component 36 drives the main pipe to rotate and change the angle, so that the position where the main pipe and the end cover body are connected can be welded and fixed.

[0118] The rotating assembly 36 of the present invention adopts another method, referring to Fig.24 Specifically, it includes a movable plate 2 361, on which a rotating cylinder 1 362 is installed, an air gripper 3 363 is installed at the output end of the rotating cylinder 1 362, and a chuck 364 is installed at the output end of the air gripper 363, and a clamping groove 365 is formed on the chuck 364, and the air gripper 363 drives the chuck 364 to move so that the clamping groove 365 clamps the main pipe, and then the rotating cylinder 1 362 drives the air gripper 363 to rotate, thereby rotating the main pipe.

[0119] One embodiment of the end cap transfer assembly 33 of the present invention is shown in FIG. Fig.23 , specifically including a driver five 331, an output end carrier 332 of the driver five 331, a cavity is provided in the carrier 332, an opening 334 for the end cover body to enter is provided above the carrier 332, an outlet 336 for taking out the end cover body is provided on one side of the carrier 332, preferably, two baffles 335 are provided at the opening 334, and an inclined surface is provided at the entrance to form a channel to guide the end cover body, and a "V"-shaped inclined surface is provided in the cavity to clamp and prevent dumping.

[0120] In this embodiment, the driver 5 331 can be a combination of a cylinder and a sliding pair. Fig.25 , the end cover body, which was originally in a horizontal state, is pushed toward the notch by the toggle assembly, so that it gradually changes from a horizontal state to an upright state and finally falls into the channel and further into the cavity. An outlet 336 for taking out the end cover body is provided on one side of the carrier 332. The area of ​​the outlet 336 is larger than that of the end cover body, so that the installation assembly 34 can take it out from the outlet 336. Preferably, a telescopic block 333 is provided on the carrier 332 corresponding to the outlet 336, which is used to assist in fixing the end cover body. When the end cover body is taken out from the outlet 336 and passes through the telescopic block 333, it will be pressed into the carrier 332 and will be ejected after crossing.

[0121] One embodiment of the present invention regarding the mounting assembly 34 is shown in FIG. Fig. 22 , specifically including a base 341, a movable plate 1 342 is slidably connected to the base 341, a movable seat 343 is slidably connected to the movable plate 1 342, and an adsorption head 344 is installed on the movable seat 343. In one usage mode, when the carrier 332 moves to the base 341, the movable plate 1 342 is pulled by the driver 8 346 to move the movable seat 343 toward the carrier 332, the adsorption head 344 corresponds to the outlet 336, and the adsorption head 344 enters the cavity and contacts the end cover body, the driver 6 345 pushes the movable seat 343 to move away from the carrier 332, and at the same time brings the end cover body out of the outlet 336, and then the carrier 332 is reset under the drive of the driver 5 331.

[0122] Preferably, the movable plate 2 361 is slidably connected to the base 341, and the movable plate 2 361 is connected to the driver 7 366. In one embodiment, the movable seat 343 and the rotating assembly 36 are in a state of being separated, and a larger space is reserved for the main pipe to enter. After the main pipe enters the placement position, the movable seat 343 and the rotating assembly 36 are close to each other, and the clamping groove 365 in the rotating assembly 36 fixes one end of the main pipe, and the movable seat 343 drives the end cover body to contact and connect with the other end of the main pipe.

[0123] Furthermore, the placement position includes at least two straight-lined fixed plates 351, the fixed plate 351 is provided with an arc-shaped placement groove 352, and the fixed plate 351 is provided with a roller 353, the roller 353 protrudes from the placement groove and contacts the main pipe, and the roller can be used to assist the rotation when the main pipe rotates.

[0124] Preferably, refer to Fig.21 , and also includes a multi-axis moving mechanism 2 371, on which a plurality of linearly distributed clamping jaws 2 372 are installed, the clamping jaws 2 372 are composed of air claws and arc-shaped clamping arms, and the arc-shaped clamping arms are provided with a plurality of rollers 373 protruding from the inner side. In one of the usage modes, when the main pipe enters the placement position, the clamping jaws 2 372 are not released, but the clamping state of the main pipe is maintained, and when the main pipe rotates, the rollers 373 assist in synchronous rotation, so that the main pipe can be fixed.

[0125] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0126] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A full-process production line for metal exhaust pipes, comprising a main pipe forming line, a short pipe forming line and an assembly device, wherein the main pipe forming line transports the formed main pipe to the assembly device through a transfer device 1, and the short pipe forming line transports the formed short pipe to the assembly device through a transfer device 2, and the assembly device fixes the short pipe and the main pipe and performs a bending operation on the short pipe, characterized in that: The main pipe forming line comprises a main pipe feeding device, a main pipe front end processing device, a main pipe punching device and a main pipe end cover installation device which are arranged in sequence, and the above devices are connected by a transfer device; The short tube forming line includes a short tube feeding device and a short tube corrugated forming device, and the short tube corrugated forming device includes a pushing component 1 and a forming component, and the pushing component 1 is used to push the short tube into the forming component and continuously drive the short tube to move; The forming assembly includes a fastening component 1 and a fastening component 2 which are spaced apart, and an expansion claw located therebetween. The expansion claw is provided with a conical surface on its outer periphery, and a pull rod 2 is passed through its interior. The pull rod 2 is used to expand the expansion claw outward, and the expansion claw is resettable. The two ends of the pull rod extend to the outside and are connected to a driver 9. The fastening component 1 and the fastening component 2 are respectively connected to a driver 10 and a driver 11, and the driver 10 and the driver 11 respectively push the fastening component 1 and the fastening component 2 away from or closer to each other.

2. A full-process production line for metal exhaust pipes according to claim 1, characterized in that: The driver 9 includes a cylinder 8 and a guide cylinder installed on a fixed plate 3. The guide cylinder is connected to the expansion claw through a plurality of claws. The cylinder 8 is connected to the pull rod 2 through a connecting piece 4. The pull rod 2 penetrates the guide cylinder and extends to the expansion claw.

3. The full-process production line of a metal exhaust pipe according to claim 1 is characterized in that: The pushing component 1 includes a bracket 3, in which a driver 12 and a supporting frame are installed, the movable end of the driver 12 is connected to an extension rod, and an air claw 4 is installed at the end of the extension rod. The four annular arrays of the air claws are provided with a plurality of action ends, and the action ends are connected to a resistance part 2. The supporting frame is provided with a plurality of rollers 4 along the moving direction of the short tube, and the supporting frame is composed of two bearing plates, and a transmission rod is provided on one side of the two bearing plates. The transmission rod is rotatably connected to the bracket 2, and a transmission block 1 is fixedly connected to one end of the transmission rod, and a pulley is provided on the transmission block 1, and the pulley is placed on the movable groove of the transmission block 2. The transmission block 2 is provided at the output end of the cylinder 9, and the cylinder 9 is installed on the bracket 2.

4. The full-process production line of a metal exhaust pipe according to claim 1 is characterized in that: The assembling device comprises a press-fit connection component, wherein an acquisition component 1 and an acquisition component 2 are respectively arranged on both sides of the press-fit connection component, and the acquisition component 2 is connected to the pushing component 2; the acquisition component 1 is used to push the main pipe to move so that one end of the main pipe is placed in the press-fit connection component; the acquisition component 2 is used to push the short pipe to move so that one end of the short pipe is placed in the press-fit connection component, one end of the short pipe penetrates into one end of the main pipe, and the outer wall of the short pipe is close to the inner wall of the main pipe; the press-fit connection component is provided with an indentation flange for pressing and fixing the ends of the short pipe and the main pipe; the pushing component 2 is used to push the acquisition component 2 to rotate, and synchronously drive the short pipe to bend.

5. A full-process production line for metal exhaust pipes according to claim 4, characterized in that: The press-fit connection assembly includes a fixed platform, on which two forming blocks for use are slidably connected, and a driver thirteen for pushing the two forming blocks to move, the two forming blocks are combined to form a fixed position one, the indentation flange is arranged on the inner wall of the fixed position one, the driver thirteen can drive the forming blocks to open and close, the driver thirteen includes a rotating cylinder two, the output end of the rotating cylinder two is connected to a transmission block three, the two ends of the transmission block three are respectively rotatably connected to transmission blocks four, and the two transmission blocks four are respectively rotatably connected to the two forming blocks.

6. A full-process production line for metal exhaust pipes according to claim 4, characterized in that: Cylinders 10 are longitudinally arranged on both sides of the two forming blocks, and a movable block 1 is installed at the output end of the cylinder 10. A roller 5 is arranged at the end of the movable block 1, and the roller 5 can contact the outer side of the forming block.

7. The full-process production line of metal exhaust pipes according to claim 4 is characterized in that: The acquisition component 2 includes a bracket 4, a driver 14 is installed on the bracket 4, a fixed block is installed on the movable end of the driver 14, the fixed block is rotatably connected to a fixed cylinder, a limit piece is provided on the outer side of the fixed cylinder, and the limit piece can abut against both sides of the bracket 4, the fixed cylinder includes a cylinder body, a cylinder 11 is provided on the outer side of the cylinder body, the output end of the cylinder 11 extends into the cylinder body, a conical groove is formed in the cylinder body, a plurality of movable plates are provided in a circular array on the inner wall of the conical groove, a circular movable block 2 connected to the output end of the cylinder 11 is provided in the cylinder body, one end of the movable plate is clamped with the movable block, and the other end extends out of the cylinder body to form a fixed position 2, and there is a gap between the movable plates near one end of the movable block.

8. The full-process production line of metal exhaust pipes according to claim 1 is characterized in that: The main pipe front end processing device comprises a multi-axis moving mechanism, a diameter expansion mechanism and a side pressing mechanism; the diameter expansion mechanism is used to expand the diameter of one end of the main pipe; the side pressing mechanism is used to reduce the diameter of the side wall of the main pipe close to the other end; the multi-axis moving mechanism is equipped with a plurality of linearly distributed clamping jaws, which are progressively moved to sequentially move the main pipe from the outside into the diameter expansion mechanism, the side pressing mechanism and the output.

9. The full-process production line of metal exhaust pipes according to claim 1 is characterized in that: The main pipe punching device comprises a punching assembly and a second rotating and fixing assembly, which respectively correspond to the two ends of the main pipe, a bearing assembly is arranged between the two, and a conveying assembly is installed below the bearing assembly; a punching position is arranged in the punching assembly for the end of the main pipe to penetrate; the second rotating and fixing assembly is connected to the third translation assembly, and is used to drive the punching assembly to be pushed in the direction of the punching assembly and drive it to rotate.

10. The full-process production line of metal exhaust pipes according to claim 1, characterized in that: The main pipe end cap installation device includes an end cap conveying assembly, a material shifting assembly is provided at the end of the end cap conveying assembly, an end cap transfer assembly is provided at the position corresponding to the material shifting assembly, the end cap body is erected into the end cap transfer assembly and moved to the installation assembly, the installation assembly is provided with a placement position, and the installation assembly obtains the end cap body and transfers it to the end of the main pipe.

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