A drilling, spinning and welding integrated machine for coaxial heat exchanger

Abstract

The application discloses a drilling, spinning and welding integrated machine for a coaxial heat exchanger, which comprises a workbench, a punching mechanism, a spinning mechanism, a welding mechanism and a material transfer mechanism, and the workbench is provided with a first material loading station, a second material loading station, a punching station, a spinning and welding station and a third material loading station; the spinning mechanism can be moved close to the spinning and welding station to neck the outer sleeve pipe to press the inner pipe, then be moved away from the spinning and welding station, then the second rotary material transfer mechanism drives the outer sleeve pipe to drive the inner pipe to rotate synchronously, and the welding mechanism welds the synchronously rotating outer sleeve pipe and inner pipe on the spinning and welding station. When the coaxial heat exchanger is manufactured, the automatic punching, necking and welding of the outer sleeve pipe and the inner pipe can be realized, the outer sleeve pipe and the inner pipe are coaxially distributed and stably synchronously rotated under the action of the first rotary material transfer mechanism and the second rotary material transfer mechanism, the welding quality is guaranteed, and the product quality of the coaxial heat exchanger is guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to a heat exchange device for a fixed tubular channel assembly of two heat exchange media, in particular to a drilling, spinning and welding integrated machine for a coaxial heat exchanger. BACKGROUND

[0002] The coaxial heat exchanger is composed of a concentric inner tube 100 and an outer sleeve tube 200, as shown in the structural schematic diagram of the coaxial heat exchanger. Figure 10 The cold and hot fluids flow in the annular gap of the inner tube 100 and the outer sleeve tube 200 respectively to perform heat exchange.

[0003] In the production of the coaxial heat exchanger, the outer sleeve tube 200 is punched one by one by manual work, then the inner tube 100 is inserted into the punched outer sleeve tube 200 and sent to a necking machine, the necking is completed, and then the two are welded, the concentricity of the inner tube 100 and the outer sleeve tube 200 will affect the welding quality of the inner tube 100 and the outer sleeve tube 200, and further affect the production quality of the coaxial heat exchanger.

[0004] Therefore, a drilling, spinning and welding integrated machine for a coaxial heat exchanger capable of guaranteeing the production quality of the coaxial heat exchanger is urgently needed. SUMMARY

[0005] The application aims to solve at least one of the technical problems in the prior art. To this end, the application provides a drilling, spinning and welding integrated machine for a coaxial heat exchanger capable of realizing coaxial distribution and stable synchronous rotation of the outer sleeve tube and the inner tube, and the technical scheme adopted comprises:

[0006] A drilling, spinning and welding integrated machine for a coaxial heat exchanger comprises a workbench, a punching mechanism, a spinning mechanism, a welding mechanism and a material transfer mechanism, the workbench is provided with a first material loading station and a second material loading station distributed at intervals along an x-axis direction, the workbench is provided with a punching station distributed at intervals along a y-axis direction at the first material loading station, the second material loading station is provided with a spinning and welding station and a third material loading station distributed at intervals along the y-axis direction, and the third material loading station and the spinning and welding station are distributed on both sides of the first material loading station;

[0007] The first rotary material transfer mechanism is used for conveying one end of the outer sleeve tube on the first material loading station to the punching station to enable the punching mechanism to punch the outer sleeve tube, and conveying the punched outer sleeve tube to the first material loading station;

[0008] The material transfer mechanism is used for conveying the punched outer sleeve tube on the first material loading station to the second material loading station;

[0009] The second rotating transfer mechanism is used for conveying the outer sleeve on the second loading station to the spinning welding station, and the pushing mechanism is used for conveying the inner tube at the third loading station to the spinning welding station so as to be inserted into the outer sleeve and to pass out of the outer sleeve;

[0010] After the spinning mechanism is moved close to the spinning welding station and necks the outer sleeve to press the inner tube, the second rotating transfer mechanism drives the outer sleeve to rotate synchronously with the inner tube, and the welding mechanism welds the outer sleeve and the inner tube rotating synchronously on the spinning welding station.

[0011] The spinning mechanism comprises a spinning machine spindle and a spinning clamp mold, the spinning machine spindle is installed on the workbench through a spinning linear drive assembly, the spinning machine spindle and the spinning clamp mold are distributed along the y-axis direction on the workbench, and the spinning machine spindle is located on the side of the spinning clamp mold away from the spinning welding station, and the welding mechanism is arranged between the spinning machine spindle and the spinning clamp mold.

[0012] The welding mechanism comprises a welding linear drive mechanism and a welding head, the welding head is installed on the welding linear drive mechanism, and the welding linear drive mechanism can drive the welding head to move along the x-axis direction.

[0013] The first rotating transfer mechanism and the second rotating transfer mechanism are rotating clamping seats, the first rotating transfer mechanism and the second rotating transfer mechanism are respectively installed on the workbench through linear guides, and a plurality of liftable material supporting mechanisms are respectively arranged on the first loading station and the second loading station along the y-axis direction.

[0014] The pushing mechanism comprises a pushing drive mechanism matched with the outer sleeve, a limiting tube installed on the pushing drive mechanism, and a pushing needle coaxially arranged in the limiting tube, the limiting tube is coaxially distributed with the outer sleeve on the second loading station, and a plurality of liftable material supporting mechanisms are respectively arranged on the third loading station along the y-axis direction.

[0015] The material supporting mechanism comprises a material supporting lifting mechanism and a material supporting table installed on the material supporting lifting mechanism, and the upper end of the material supporting table is V-shaped.

[0016] An embodiment of the present application adopts the technical scheme that the technical problem is solved, and the technical scheme is that the feeding mechanism is further arranged, and the feeding mechanism is used for feeding the outer sleeve to the first material loading station or used for feeding the inner tube to the third material loading station.

[0017] An embodiment of the present application adopts the technical scheme that the technical problem is solved, and the technical scheme is that the feeding mechanism comprises a plurality of pushing assemblies arranged at one side of the workbench along the x-axis direction, each pushing assembly comprises a pushing driving unit and a pushing plate mounted at the driving end of the pushing driving unit, the height of the pushing plate is lower than the horizontal height of the material receiving end of the material receiving mechanism, the upper end of the pushing plate is provided with a groove for accommodating the outer sleeve or the inner tube, the outer sleeve or the inner tube can be sent to the groove of the pushing plate one by one, and when the material receiving mechanism on the first material loading station or the third material loading station is lowered, the pushing driving unit is used to drive the pushing plate to move at the first material loading station or the third material loading station, and the material receiving mechanism on the first material loading station or the third material loading station is raised and receives the outer sleeve or the inner tube.

[0018] An embodiment of the present application adopts the technical scheme that the technical problem is solved, and the technical scheme is that the feeding mechanism further comprises a rack, a plurality of belt winding machines and a plurality of guide plates, the rack is arranged at one side of the workbench, a plurality of belt winding machines are arranged on the rack along the y-axis direction, each belt winding machine comprises a belt driving assembly, a material loading belt, a tensioning wheel and a winding wheel, the tensioning wheel is arranged on the side of the rack close to the workbench, the winding wheel is arranged on the workbench and located below the tensioning wheel, one end of the material loading belt is arranged on the side of the rack away from the workbench, and the other end of the material loading belt is connected to the winding wheel through the tensioning wheel, the horizontal height of the end of the material loading belt connected to the rack is higher than the horizontal height of the upper end of the tensioning wheel, the outer sleeve or the inner tube is placed on a plurality of material loading belts and accommodated in the U-shaped opening of the rack, a plurality of guide plates correspond to a plurality of material loading belts, one end of each guide plate is connected to the side of the rack close to the workbench, and the other end of each guide plate extends and inclines downward and close to the upper end of the pushing plate.

[0019] An embodiment of the present application adopts the technical scheme that the technical problem is solved, and the technical scheme is that the material transfer mechanism comprises a transfer driving assembly and two clamping assemblies, the transfer driving assembly is arranged at one side of the workbench, the two clamping assemblies are arranged on the transfer driving assembly and distributed along the x-axis direction, and the transfer driving assembly can drive the two clamping assemblies to move synchronously in the vertical plane.

[0020] The present application has the following beneficial effects:

[0021] The drilling, spinning, welding integrated machine for the coaxial heat exchanger can realize automatic punching, reducing diameter and welding of the outer sleeve pipe when processing the coaxial heat exchanger, and the outer sleeve pipe and the inner pipe are coaxially distributed and stably synchronously rotated under the action of the first rotating material transfer mechanism and the second rotating material transfer mechanism, so that the welding quality and the production quality of the coaxial heat exchanger are ensured, and the drilling, spinning and welding steps in the integrated machine are fully automatically completed, so that the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the following drawings, in which:

[0023] Figure 1 The structure schematic view of the drilling, spinning and welding integrated machine for the coaxial heat exchanger is shown in the figure;

[0024] Figure 2 The structure distribution view on the workbench is shown in the figure;

[0025] Figure 3 The distribution view of the punching mechanism, the spinning mechanism and the welding structure is shown in the figure;

[0026] Figure 4 The structure schematic view of the spinning mechanism is shown in the figure;

[0027] Figure 5 The structure schematic view of the punching mechanism, the spinning mechanism and the welding structure is shown in the figure;

[0028] Figure 6 The structure schematic view of the pushing mechanism is shown in the figure;

[0029] Figure 7 The structure schematic view of the feeding mechanism is shown in the figure;

[0030] Figure 8 The structure schematic view of the material transfer mechanism is shown in the figure; Figure 7 The enlarged view of A in the figure;

[0031] Figure 9 The structure schematic view of the material transfer mechanism is shown in the figure;

[0032] Figure 10 The structure schematic view of the coaxial heat exchanger is shown in the figure. DETAILED DESCRIPTION

[0033] This part will describe the specific embodiments of the present application in detail, and the preferred embodiments of the present application are shown in the drawings, and the drawings are used to supplement the description in the text part of the specification, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0034] In the description of the present application, the meaning of multiple is more than two, greater than, less than, more than, etc. is not included in the number, above, below, within, etc. is included in the number. If it is described that the first, second is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0035] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0036] In the present application, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be broadly understood, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected; can be the internal communication or interaction relationship of two elements. The skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0037] Referring to the drawings Figure 10 As shown in the drawings, the metal pipe for coaxial heat exchanger is made by punching and necking one end of the outer sleeve pipe, inserting the inner pipe into the outer sleeve pipe and extending into the necked end of the outer sleeve pipe, and welding the end of the necked end of the outer sleeve pipe to the inner pipe.

[0038] Referring to Figures 1-9 For the metal pipe for coaxial heat exchanger, the present application proposes a drilling, spinning and welding integrated machine for coaxial heat exchanger, which comprises:

[0039] A workbench 1, a punching mechanism 2, a spinning mechanism 3, a welding mechanism 4 and a material transfer mechanism 5, the workbench 1 is provided with a first material loading station, a second material loading station, the workbench 1 is provided with a punching station along the y-axis direction at the first material loading station, the second material loading station is provided with a spinning and welding station and a third material loading station along the y-axis direction, and the third material loading station and the spinning and welding station are distributed on both sides of the first material loading station;

[0040] The first rotary material transfer mechanism 6 is used for conveying one end of the outer sleeve pipe on the first material loading station to the punching station so that the punching mechanism 2 punches it, and conveying the outer sleeve pipe after punching to the first material loading station;

[0041] The material transfer mechanism 5 is used for conveying the outer sleeve pipe with punched holes on the first loading station to the second loading station;

[0042] The second rotary transfer mechanism 7 is used for conveying the outer sleeve pipe on the second loading station to the spinning welding station, and the pushing mechanism 8 is used for conveying the inner pipe at the third loading station to the spinning welding station so as to be inserted into the outer sleeve pipe and to pass out;

[0043] After the spinning mechanism 3 moves close to the spinning welding station and necks the outer sleeve pipe to press the inner pipe, the spinning mechanism 3 moves away from the spinning welding station, the second rotary transfer mechanism 7 drives the outer sleeve pipe to rotate synchronously with the inner pipe, and the welding mechanism 4 welds the outer sleeve pipe and the inner pipe rotating synchronously on the spinning welding station.

[0044] The working principle of the drilling, spinning and welding integrated machine for the coaxial heat exchanger is as follows:

[0045] Step 1: placing the outer sleeve pipe to be processed on the first loading station, conveying the outer sleeve pipe on the first loading station to the punching station along the y-axis direction by the first rotary transfer mechanism 6, and punching the outer sleeve pipe on the punching station by the punching mechanism 2; after the punching is completed, the first rotary transfer mechanism 6 re-conveys the outer sleeve pipe with punched holes to the first loading station;

[0046] Step 2: the material transfer mechanism 5 can reciprocate between the first loading station and the second loading station, and the material transfer mechanism 5 transfers the outer sleeve pipe with punched holes on the first loading station to the second loading station;

[0047] Step 3: the second rotary transfer mechanism 7 conveys the outer sleeve pipe on the second loading station to the spinning welding station, and the pushing mechanism 8 conveys the inner pipe on the third loading station to the spinning welding station along the y-axis direction so as to be inserted into the outer sleeve pipe until the end of the inner pipe passes out of the end of the necked outer sleeve pipe;

[0048] Step 4: the spinning end of the spinning mechanism 3 moves close to the spinning welding station and spins the neck of the outer sleeve pipe to press the inner pipe, and then the spinning end of the spinning mechanism 3 moves away from the spinning welding station;

[0049] Step 5: the second rotary transfer mechanism 7 drives the outer sleeve pipe to rotate synchronously with the inner pipe, at this time, the welding mechanism 4 welds the end of the necked outer sleeve pipe and the inner pipe on the spinning welding station, and the drilling, spinning and welding of the metal pipe for the coaxial heat exchanger are completed.

[0050] Referring to the drawings, the punching mechanism 2 is arranged at one end of the first loading station corresponding to the y-axis direction, the first rotary transfer mechanism 6 can drive the outer sleeve to move along the y-axis direction and be conveyed to the punching mechanism 2 for punching, and can also drive the outer sleeve to move along the y-axis direction so that the punching mechanism 2 can punch the outer sleeve at different axial positions; the first rotary transfer mechanism 6 can also drive the outer sleeve to rotate, so that the punching mechanism 2 can punch the outer sleeve at different circumferential positions, meeting different production requirements.

[0051] Referring to the drawings, the punching mechanism 2 is arranged at one end of the first loading station corresponding to the y-axis direction, the first rotary transfer mechanism 6 can drive the outer sleeve to move along the y-axis direction and be conveyed to the punching mechanism 2 for punching, and can also drive the outer sleeve to move along the y-axis direction so that the punching mechanism 2 can punch the outer sleeve at different axial positions; the first rotary transfer mechanism 6 can also drive the outer sleeve to rotate, so that the punching mechanism 2 can punch the outer sleeve at different circumferential positions, meeting different production requirements.

[0052] In the present application, the spinning mechanism 3 includes a spinning machine spindle 31 and a spinning clamp die 32, the spinning machine spindle 31 is installed on the workbench 1 through a spinning linear drive assembly 33, the spinning machine spindle 31 and the spinning clamp die 32 are spaced apart along the y-axis direction on the workbench 1, and they are located on the side of the spinning clamp die 32 away from the spinning and welding station, and the welding mechanism 4 is arranged between the spinning machine spindle 31 and the spinning clamp die 32.

[0053] The spinning machine spindle 31 is provided with a spinning die, after the spinning clamp die 32 is opened to allow the outer tube to be inserted and extended between the spinning machine spindle 31 and the spinning clamp die 32, the spinning clamp die 32 is closed and clamped to the outer sleeve, the spinning linear drive assembly 33 drives the spinning machine spindle 31 to move close to the spinning clamp die 32 and close to the outer sleeve to realize the necking of the outer sleeve, after the necking is completed, the spinning linear drive assembly 33 drives the spinning machine spindle 31 to move away from the spinning clamp die 32.

[0054] The welding mechanism 4 includes a welding linear drive mechanism 41 and a welding head 42, the welding head 42 is installed on the welding linear drive mechanism 41.

[0055] After the spinning linear drive assembly 33 drives the spinning machine spindle 31 to move away from the spinning clamp die 32, the welding linear drive mechanism 41 drives the welding head 42 to move along the x-axis direction and close to the end of the necked outer sleeve in rotation and the inner tube, which realizes the welding of the outer sleeve and the inner tube.

[0056] As a preferred, it also includes a light shield 12, the light shield 12 is arranged between the spinning machine spindle 31 and the spinning clamp die 32, and one side of the light shield 12 corresponding to the x-axis direction is provided with an opening for the welding head 42 to extend into, and both sides of the light shield 12 corresponding to the y-axis direction are respectively provided with through holes for the spinning machine spindle 31 and the outer sleeve to be inserted.

[0057] Further, a light shielding plate 13 vertically arranged between the light shielding covers 12 away from the spinning welding stations is further included, and the light shielding plate 13 is provided with a concave hole matched with the inner tube, and the light shielding plate 13 is installed at the extension end of the telescopic mechanism 14.

[0058] When the outer sleeve and the inner tube are moved to the spinning welding station and are moved into the light shielding cover 12, before welding, the extension end of the telescopic mechanism 14 is extended along the x-axis direction and drives the light shielding plate 13 to shield the through hole of the light shielding cover 12, and the light shielding plate is provided with a concave hole for avoiding the inner tube, so that the inner tube can pass through the light shielding plate 13 for welding, and after the welding is completed, the extension end of the telescopic mechanism 14 is shortened along the x-axis direction.

[0059] In the embodiment, the first rotating material transfer mechanism 6 and the second rotating material transfer mechanism 7 are respectively installed on the workbench 1 through the linear guide rail 9, and the first material loading station and the second material loading station are respectively provided with a plurality of liftable material supporting mechanisms 10 arranged along the y-axis direction, wherein the first material supporting mechanism is at the first material loading station, and the second material supporting mechanism is at the second material loading station.

[0060] The working principle of the first rotating material transfer mechanism 6 when the rotating clamp seat is as follows:

[0061] The first rotating material transfer mechanism 6 moves away from the first material loading station and places the outer sleeve on a plurality of first material supporting mechanisms along the y-axis direction; the first rotating material transfer mechanism 6 moves close to the first material loading station to enable the outer sleeve to be inserted into the inside, and after the first rotating material transfer mechanism 6 clamps the outer sleeve on the first material supporting mechanism, the first rotating material transfer mechanism 6 can drive the outer sleeve to move to the punching station along the y-axis direction for punching and then return to the first material loading station; after the first rotating material transfer mechanism 6 releases the outer sleeve and moves away from the first material loading station, the material transfer mechanism 5 can transfer the outer sleeve on the first material loading station to the second material loading station.

[0062] When the first rotating material transfer mechanism 6 moves away from or close to the punching station, the interfering material supporting tables 102 on the first material loading station will be lowered one by one to avoid the first rotating material transfer mechanism 6, so that the outer sleeve can be stably supported while avoiding affecting the movement of the first rotating material transfer mechanism 6.

[0063] The working principle of the second rotary material transfer mechanism 7 when the second rotary material transfer mechanism 7 is a rotary clamp is the same as the working principle of the first rotary material transfer mechanism 6. When the second rotary material transfer mechanism 7 moves away from the second material loading station, the sleeve pipe can be transferred to the second material loading station by the material transfer mechanism 5. When the second rotary material transfer mechanism 7 moves close to the second material loading station, the second rotary material transfer mechanism 7 can clamp the sleeve pipe and move to the spinning welding station or the spinning welding station. After the welding is completed, the second rotary material transfer mechanism 7 moves away from the sleeve pipe and away from the second material loading station, so that the welded sleeve pipe and the inner pipe can be unloaded. Correspondingly, the material supporting table 102 interfering with the movement path of the second rotary material transfer mechanism 7 will be lowered to avoid interference.

[0064] The pushing mechanism 8 includes a pushing driving mechanism 81 matched with the sleeve pipe, a limiting tube 82 installed on the pushing driving mechanism 81, and a pushing needle 83 coaxially arranged in the limiting tube 82. The limiting tube 82 is coaxially arranged with the outer pipe sleeve on the second material loading station. After the inner pipe is loaded onto the third material loading station, the pushing driving mechanism 81 drives the limiting tube 82 and the pushing needle 83 to move along the y-axis direction so that the pushing needle 83 inserts into the inner pipe and continues to push the inner pipe on the third material loading station to move into the outer pipe sleeve on the second material loading station.

[0065] The working principle of the pushing mechanism 8 is the same as the working principle of the second rotary material transfer mechanism 7. The pushing mechanism 8 moves away from the third material loading station, so that the inner pipe can be placed on the material supporting table 102 on the third material loading mechanism. The pushing mechanism 8 moves close to the second material loading station and can push the inner pipe to move along the y-axis direction and insert into the sleeve pipe to the spinning welding station. Correspondingly, the material supporting table 102 interfering with the movement path of the pushing mechanism 8 will be lowered to avoid interference.

[0066] The pushing driving mechanism 81 and the second rotary material transfer mechanism 7 are installed on the same linear guide rail 9. The pushing driving mechanism 81 drives the limiting tube 82 and the pushing needle 83 to move along the same linear guide rail 9 as the second rotary material transfer mechanism 7.

[0067] The material supporting mechanism 10 includes a material supporting lifting mechanism 101 and a material supporting table 102 installed on the material supporting lifting mechanism 101. The upper end of the material supporting table 102 is V-shaped, which is convenient for stably placing the inner pipe and the sleeve pipe.

[0068] As a preferred embodiment, the feeding mechanism 11 is used to load the sleeve pipe onto the first material loading station or to load the inner pipe onto the third material loading station.

[0069] In this embodiment, the workbench 1 is provided with the feeding mechanism 11 on both sides, and the two feeding mechanisms 11 can respectively feed the outer sleeve and the inner tube to the first and third loading stations.

[0070] The feeding mechanism 11 comprises a plurality of pushing assemblies, which are arranged on one side of the workbench 1 along the x-axis direction, each pushing assembly comprises a pushing driving unit 111 and a pushing plate 112 mounted on the driving end of the pushing driving unit 111, the height of the pushing plate 112 is lower than the horizontal height of the loading end of the loading mechanism 10, the upper end of the pushing plate 112 is provided with a groove 113 for accommodating the outer sleeve or the inner tube, the feeding mechanism 11 is used to send the outer sleeve or the inner tube into the groove 113 of the pushing plate 112 one by one, when the loading mechanism 10 on the first or third loading station is lowered, the pushing driving unit 111 is used to drive the pushing plate 112 to move to the first or third loading station, after the loading mechanism 10 on the first or third loading station is raised and receives the outer sleeve or the inner tube, the pushing driving unit 111 drives the pushing plate 112 to move away from the first or third loading station, and the feeding mechanism 11 sends the outer sleeve or the inner tube into the groove 113 of the pushing plate 112 again, waiting for the next feeding.

[0071] Specifically, the feeding mechanism 11 further comprises a rack 114, a plurality of belt winding machines 115 and a plurality of guide plates, the rack 114 is arranged on one side of the workbench 1, a plurality of belt winding machines 115 are installed on the rack 114 along the y-axis direction, each belt winding machine 115 comprises a belt driving assembly 1151, a loading belt 1152, a tensioning wheel 1153 and a winding wheel 1154, the tensioning wheel 1153 is installed on one side of the rack 114 close to the workbench 1, the winding wheel 1154 is installed on the workbench 1 and located below the tensioning wheel 1153, one end of the loading belt 1152 is installed on the side of the rack 114 away from the workbench 1, and the other end is connected to the winding wheel 1154 through the tensioning wheel 1153, the horizontal height of the end of the loading belt 1152 connected to the rack 114 is higher than the horizontal height of the upper end of the tensioning wheel 1153, the outer sleeve or the inner tube is placed on a plurality of loading belts 1152, a plurality of guide plates correspond to a plurality of loading belts 1152, one end of each guide plate is connected to the side of the rack 114 close to the workbench 1, and the other end extends and inclines downward and close to the upper end groove 113 of the pushing plate 112, the guide plate is used to make the outer sleeve or the inner tube fall into the groove 113.

[0072] The outer sleeve or inner tube is stacked on the pulley and distributed in the U-shaped opening of the frame 114, and the plurality of belt winding machines 115 winds the carrier belt 1152 to make the stacked outer sleeve or inner tube rise above the height of the frame 114, and then falls along the guide plate into the groove 113 at the upper end of the pushing plate 112.

[0073] The guide plate comprises an inclined guide plate 1161 and a vertical guide plate 1162, one end of the inclined guide plate 1161 is connected to the side of the frame 114 close to the workbench 1, and the other end is inclined downward, the vertical guide plate 1162 is vertically arranged on the side of the inclined guide plate 1161 close to the workbench 1 and has a gap therebetween, and the vertical guide plate 1162 and the inclined guide plate 1161 are distributed on both sides of the groove 113, so that the outer sleeve or inner tube falls along the inclined guide plate 1161 and then falls into the groove 113 under the action of the vertical guide plate 1162.

[0074] In the present application, the material transfer mechanism 5 comprises a transfer driving assembly 51 and two clamping assemblies 52, the transfer driving assembly 51 is arranged on one side of the workbench 1, and the two clamping assemblies 52 are respectively installed on the transfer driving assembly 51 and are distributed in the x-axis direction, and the transfer driving assembly 51 can drive the two clamping assemblies 52 to move synchronously in the vertical plane.

[0075] The clamping assembly 52 comprises two finger air cylinders for simultaneously clamping the outer sleeve, when the outer sleeve on the first carrier station is completed punching and the outer sleeve on the second carrier station is completed welding with the inner tube, the material transfer mechanism 5 drives the two clamping assemblies 52 to descend and clamp the outer sleeve, and then moves along the x-axis direction, so that the outer sleeve on the first carrier station moves to the second carrier station, and the outer sleeve on the second carrier station moves out of the workbench 1 for unloading.

[0076] Of course, the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications and replacements are all included in the scope defined by the claims of the present application.

Claims

1. A drilling, spinning, and welding integrated machine for coaxial heat exchangers, characterized in that, It includes a workbench (1), a punching mechanism (2), a spinning mechanism (3), a welding mechanism (4), and a material transfer mechanism (5). The workbench (1) is provided with a first material loading station and a second material loading station that are spaced apart along the x-axis. The workbench (1) has a punching station spaced apart along the y-axis at the first material loading station, and a spinning welding station and a third material loading station spaced apart along the y-axis at the second material loading station. The third material loading station and the spinning welding station are located on both sides of the first material loading station. The first rotary transfer mechanism (6) is used to transport one end of the outer tube on the first loading station to the punching station so that the punching mechanism (2) punches it, and transports the punched outer tube to the first loading station; The material transfer mechanism (5) is used to transport the punched outer tube at the first material loading station to the second material loading station; The second rotary transfer mechanism (7) is used to transport the outer tube on the second loading station to the spinning welding station, and the pusher mechanism (8) is used to transport the inner tube at the third loading station to the spinning welding station so that it is inserted into the outer tube and passes through. After the spinning mechanism (3) moves close to the spinning welding station and narrows the outer tube to press the inner tube, and then moves away from the spinning welding station, the second rotating material transfer mechanism (7) drives the outer tube to rotate synchronously with the inner tube, and the welding mechanism (4) welds the outer tube and the inner tube that are rotating synchronously on the spinning welding station. The pushing mechanism (8) includes a pushing drive mechanism (81) that matches the outer sleeve, a limiting tube (82) installed on the pushing drive mechanism (81), and a pushing needle (83) coaxially arranged in the limiting tube (82). The limiting tube (82) is coaxially distributed with the outer sleeve on the second loading station. The third loading station is provided with a plurality of lifting and lowering material-bearing mechanisms (10) spaced apart along the y-axis.

2. The integrated drilling, spinning, and welding machine for coaxial heat exchangers according to claim 1, characterized in that, The spinning mechanism (3) includes a spinning machine spindle (31) and a spinning die (32). The spinning machine spindle (31) is mounted on the worktable (1) via a spinning linear drive assembly (33). The spinning machine spindle (31) and the spinning die (32) are spaced apart on the worktable (1) along the y-axis, and the spindle (31) is located on the side of the spinning die (32) away from the spinning welding station. The welding mechanism (4) is located between the spinning machine spindle (31) and the spinning die (32).

3. The integrated drilling, spinning, and welding machine for coaxial heat exchangers according to claim 2, characterized in that, The welding mechanism (4) includes a welding linear drive mechanism (41) and a welding head (42). The welding head (42) is mounted on the welding linear drive mechanism, and the welding linear drive mechanism (41) can drive the welding head (42) to move along the x-axis.

4. The integrated drilling, spinning, and welding machine for coaxial heat exchangers according to claim 1, characterized in that, The first rotary transfer mechanism (6) and the second rotary transfer mechanism (7) are both rotary clamps. The first rotary transfer mechanism (6) and the second rotary transfer mechanism (7) are respectively installed on the worktable (1) via linear guide rails (9). The first loading station and the second loading station are respectively provided with multiple lifting and lowering material-bearing mechanisms (10) spaced along the y-axis.

5. The integrated drilling, spinning, and welding machine for coaxial heat exchangers according to claim 1 or 4, characterized in that, The material receiving mechanism (10) includes a material receiving lifting mechanism (101) and a material receiving platform (102) installed on the material receiving lifting mechanism (101), the upper end of the material receiving platform (102) being V-shaped.

6. The integrated drilling, spinning, and welding machine for coaxial heat exchangers according to claim 4, characterized in that, It also includes a feeding mechanism (11), which is used to feed the outer tube to the first loading station or to feed the inner tube to the third loading station.

7. The integrated drilling, spinning, and welding machine for coaxial heat exchangers according to claim 6, characterized in that, The feeding mechanism (11) includes a plurality of pushing components spaced apart along the x-axis on one side of the workbench (1). Each pushing component includes a pushing drive unit (111) and a pushing plate (112) installed at the driving end of the pushing drive unit (111). The height of the pushing plate (112) is lower than the horizontal height of the receiving end of the receiving mechanism (10). The upper end of the pushing plate (112) is provided with a groove (113) for accommodating the outer tube or inner tube. The outer tube or inner tube can be fed into the groove (113) of the pushing plate (112) one by one. When the receiving mechanism (10) on the first or third loading station descends, the pushing drive unit (111) drives the pushing plate (112) to move to the first or third loading station. The receiving mechanism (10) on the first or third loading station rises and receives the outer tube or inner tube.

8. The integrated drilling, spinning, and welding machine for coaxial heat exchangers according to claim 7, characterized in that, The feeding mechanism (11) further includes a frame (114), multiple belt winding machines (115), and multiple guide plates. The frame (114) is located on one side of the workbench (1). Multiple belt winding machines (115) are spaced apart on the frame (114) along the y-axis. Each belt winding machine (115) includes a belt drive assembly (1151), a load belt (1152), a tension pulley (1153), and a winding pulley (1154). The tension pulley (1153) is installed on the side of the frame (114) near the workbench (1), and the winding pulley (1154) is installed on the workbench (1) and located below the tension pulley (1153). The load belt (1152) is mounted on the side of the frame (114) near the workbench (1152). 2) One end is installed on the side of the frame (114) away from the worktable (1), and the other end is connected to the winding wheel (1154) around the tension wheel (1153). The horizontal height of the end of the material carrier belt (1152) connected to the frame (114) is higher than the horizontal height of the upper end of the tension wheel (1153). The outer tube or inner tube is placed on multiple material carrier belts (1152) and accommodated in the U-shaped opening of the frame (114). Multiple guide plates correspond to multiple material carrier belts (1152). One end of each guide plate is connected to the side of the frame (114) near the worktable (1), and the other end extends and tilts downward and is close to the upper end of the pusher plate (112).

9. The integrated drilling, spinning, and welding machine for coaxial heat exchangers according to claim 1, characterized in that, The material transfer mechanism (5) includes a transfer drive assembly (51) and two clamping assemblies (52). The transfer drive assembly (51) is located on one side of the worktable (1). The two clamping assemblies (52) are respectively mounted on the transfer drive assembly (51) and distributed at intervals along the x-axis. The transfer drive assembly (51) can drive the two clamping assemblies (52) to move synchronously in the vertical plane.

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