Cooling pipe straight edge necking device

Abstract

The utility model relates to the technical field of cooling pipe machining devices, and discloses a cooling pipe straight edge necking device which comprises a bottom plate, a limiting base used for positioning a flat pipe is arranged on the bottom plate, and a supporting plate is arranged on the side, in the length direction of a groove in the limiting base, of the bottom plate. Two jacking blocks used for jacking the flat pipe are arranged on the side, facing the limiting base, of the supporting plate in a relatively rotating mode, a driving assembly used for driving the two jacking blocks to rotate in the opposite directions is further arranged on the supporting plate, and extrusion blocks are arranged on the two sides, in the length direction of the flat pipe, of the bottom plate in a sliding mode and face the pipe ends, close to the jacking blocks, of the flat pipe; and necking grooves are formed in the jacking blocks, necking jacking blocks matched with the necking grooves are arranged on the extrusion blocks, and when the driving assembly drives the two jacking blocks to abut against the inner side wall of the straight edge of the end of the flat pipe, the extrusion blocks slide towards the flat pipe, and the necking jacking blocks extrude the end of the straight edge of the flat pipe towards the interior of the necking grooves. The cooling device has the effect of improving the assembly and installation efficiency between the cooling pipe and the main board.

Description

Technical Field

[0001] This application relates to the technical field of cooling pipe processing devices, and in particular to a cooling pipe straight-edge necking device. Background Art

[0002] In automotive exhaust emission control, the EGR cooler plays a crucial role. It can reduce the temperature of the exhaust gas entering the cylinder, thereby reducing the engine temperature, reducing the generation of NOx, and making the automotive exhaust emission limit meet the standard.

[0003] When designing the EGR cooler, according to specific application requirements and system characteristics, different-shaped cooling pipes will be selected and assembled accordingly, including round pipes, flat pipes, oval pipes, special-shaped pipes, corrugated pipes, and spiral pipes, etc. Among them, due to its flat shape, when designing the cooler, in the limited space of the cooler, the flat pipes can be arranged more densely, improving the compactness and integration of the cooler.

[0004] In the prior art, during the installation and connection between the main board and the flat pipe of the EGR cooler, the requirement for connection accuracy is extremely high. If the contact surface between the flat pipe and the main board is not tight enough after the flat pipe is installed on the main board, it will cause coolant leakage, thus affecting the performance and reliability of the cooling system. However, when the sizes of the main board and the flat pipe are precisely matched, for easy assembly, the traditional method is to turn or mill a round or chamfer at the pipe end of the flat pipe. Not only is the turning and milling process complex, but also chips are easily generated during turning and milling, which not only increases the installation cost but also reduces the working efficiency of the installation and connection between the main board and the flat pipe. Summary of the Utility Model

[0005] In order to improve the installation efficiency of the assembly between the cooling pipe and the main board, this application provides a cooling pipe straight-edge necking device.

[0006] A cooling pipe straight-edge necking device provided by this application adopts the following technical solutions:

[0007] The camming member is a pair of camming members which are each provided with a pair of camming members which are adapted to move the two guide rails toward the support rail and to move the two guide rails toward the support rail.

[0008] By adopting the above technical solution, when the flat tube needs to be shrunken, first place the flat tube in the groove of the limit seat for positioning; then, start the driving assembly to drive the two top support blocks to rotate in opposite directions until the two top support blocks are supported on the inner wall of the straight edge of the end of the flat tube, at which time the two top support blocks firmly fix the tube end of the flat tube in place; then, drive the extrusion block to slide toward the flat tube. During the sliding process, the shrinking top block squeezes the straight edge end of the flat tube toward the shrinking groove until the straight edge of the flat tube is shrunken. The precise fit between the top support block and the extrusion block not only improves the installation efficiency of the assembly between the cooling tube and the main board, but also realizes the precise shrinking of the straight edge of the flat tube, thereby improving the connection accuracy between the flat tube and the main board, and effectively preventing coolant leakage.

[0009] Optionally, the driving assembly includes a feed cylinder arranged on a side of the support plate away from the flat tube, and a conical driving rod arranged at the end of the piston rod of the feed cylinder. The piston rod of the feed cylinder slides through the support plate, and its extension and retraction direction coincides with the center line direction of the groove in the limit seat. The driving rod is located between two top support blocks, and the driving rod is arranged to fit the inclined surface of the top support block.

[0010] By adopting the above technical solution, when the feed cylinder is started, its piston rod drives the tapered drive rod to extend toward the end of the flat tube. Since the tapered side surface of the tapered drive rod fits the inclined surface of the supporting block, the tapered drive rod will squeeze the two supporting blocks during the extension process, causing them to rotate in opposite directions and finally support against the straight inner side wall of the end of the flat tube.

[0011] Optionally, a torsion spring abutting against a support plate is sleeved on the rotating shaft of the supporting block, and when the torsion spring is in a natural state, the two supporting blocks are located inside the flat tube and do not abut against the inner wall of the flat tube.

[0012] By adopting the above technical solution, one end of the torsion spring abuts against the top support block, and the other end abuts against the support plate. When the torsion spring is in a natural state, due to the restoring force of the torsion spring, the two top support blocks will be pushed to the position inside the flat tube, and at this time they will not conflict with the inner wall of the flat tube. In this way, after one shrinking operation is completed, the top support block can automatically reset to prepare for the next operation.

[0013] Optionally, a mounting plate is provided on both sides of the base plate along the length direction of the groove on the limit seat, the two mounting plates are arranged in parallel, and a clamping cylinder is provided on the opposite sides of the two mounting plates, the piston rods of the two clamping cylinders slide through the corresponding mounting plates and extend relative to each other, and the extrusion block is arranged on the end of the clamping cylinder extending between the two mounting plates.

[0014] By adopting the above technical solution, when the clamping cylinder is started, its piston rod will push the extrusion block to slide toward the flat tube, thereby realizing the shrinking operation. When the shrinking operation is completed, the piston rod of the clamping cylinder will drive the extrusion block to return to the initial position.

[0015] Optionally, a support member is horizontally arranged between the two mounting plates, and through holes are opened on the two mounting plates on the same horizontal line. The support member includes a support rod arranged to match the mounting spacing of the two mounting plates, and a guide shaft coaxially arranged at the end of the support rod. A single guide shaft is plugged into a single through hole, and the diameter of the guide shaft is smaller than the diameter of the support rod.

[0016] By adopting the above technical solution, when the mounting plate is installed on the base plate, the guide shaft on the support member is passed through the mounting plate, and the side wall of the mounting plate will form a conflict with the end side wall of the support rod. In this way, the mounting plate, the support rod and the guide shaft together constitute a stable supporting structure, which effectively improves the rigidity and stability of the entire device, and also facilitates improving the work efficiency of assembling the mounting plate on the base plate.

[0017] Optionally, a connecting plate is provided on one side of the base plate away from the support plate along the length direction of the groove on the limiting seat, and a supporting seat for mounting the flat tube is provided on the end of the connecting plate away from the base plate.

[0018] By adopting the above technical solution, the support seat is conveniently used to support the other end of the flat tube to ensure the stability of the flat tube installation during the shrinking process, thereby improving the shrinking accuracy of the device for the flat tube.

[0019] Optionally, a sliding groove is provided on the connecting plate along its length direction, a sliding block that slides with the sliding groove is provided at the bottom of the supporting seat, a screw is rotatably provided in the sliding groove along its length direction, the screw passes through the sliding block through threaded rotation, and a driving motor that drives the screw to rotate is also provided on the connecting plate.

[0020] By adopting the above technical solution, starting the drive motor can drive the screw to rotate. The rotating screw drives the slider that is in threaded cooperation with it to rotate synchronously. However, under the limiting and guiding of the chute, the rotation of the screw drives the support base to slide along the length direction of the chute under the guiding of the chute, so as to accurately adjust the position of the support base on the connecting plate and improve the adaptability to flat tubes of different lengths.

[0021] Optionally, a scale is arranged on the side wall of the connecting plate along its own length direction.

[0022] By adopting the above technical solution, the scale can be used to visually read the specific position of the support base, which is convenient for adjusting the position of the support base on the connecting plate in advance according to flat tubes of different specifications and lengths, thereby improving the installation efficiency of the flat tube on the necking device.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. When necking the flat tube is required, first place the flat tube in the groove of the limiting seat for positioning; subsequently, start the drive assembly to drive the two top support blocks to rotate in opposite directions until the two top support blocks abut against the inner side wall of the straight edge at the end of the flat tube. At this time, the two top support blocks firmly fix the tube end of the flat tube in place; then, drive the extrusion block to slide towards the flat tube. During the sliding process, the necking top block extrudes the straight edge end of the flat tube into the necking groove until the straight edge of the flat tube is necked. By the precise cooperation between the top support block and the extrusion block, not only the installation efficiency of the assembly between the cooling tube and the main board is improved, but also the precise necking of the straight edge of the flat tube can be realized, thereby improving the connection accuracy between the flat tube and the main board and effectively preventing coolant leakage;

[0025] 2. When the feeding air cylinder is started, its piston rod drives the conical drive rod to extend towards the end of the flat tube. Since the conical side surface of the conical drive rod is in contact with the inclined surface of the top support block, during the extension process of the conical drive rod, it will squeeze the two top support blocks, causing them to rotate in opposite directions and finally abut against the inner side wall of the straight edge at the end of the flat tube;

[0026] 3. One end of the torsion spring abuts against the top support block, and the other end abuts against the support plate. When the torsion spring is in its natural state, due to the restoring force of the torsion spring, the two top support blocks will be pushed to a position inside the flat tube, and at this time they do not contact the inner wall of the flat tube. In this way, after one necking operation is completed, the top support blocks can automatically reset to prepare for the next operation. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present application.

[0028] Figure 2 It is a cross-sectional view showing the positional relationship between the top support block and the extrusion block in Embodiment 1 of the present application.

[0029] Figure 3 is Figure 2 an enlarged view of part A in

[0030] Figure 4 It is a schematic diagram of the overall structure of Embodiment 2 of the present application.

[0031] Explanation of reference numerals:

[0032] 01, flat tube; 1, bottom plate; 2, limit seat; 3, support plate; 4, top support block; 41, necking groove; 5, drive assembly; 51, feed cylinder; 52, drive rod; 6, mounting plate; 61, support member; 611, support rod; 612, guide shaft; 62, through hole; 7, extrusion block; 71, necking top block; 8, pushing member; 81, pressing cylinder; 9, connecting plate; 91, support seat; 911, slider; 92, sliding groove; 921, screw; 93, drive motor; 94, scale. Detailed implementation manners

[0033] The following will Figures 1-4 further elaborate on the present application in conjunction with the attached

[0034] Embodiment 1 of the present application discloses a device for necking the straight edge of a cooling tube.

[0035] Embodiment 1

[0036] Referring to Figures 1 to 3 , a device for necking the straight edge of a cooling tube includes a bottom plate 1. A limit seat 2 for positioning the flat tube 01 is provided on the bottom plate 1. One side of the bottom plate 1 along the length direction of the groove of the limit seat 2 is bolted with a support plate 3. On the side of the support plate 3 facing the limit seat 2, two top support blocks 4 for propping against the inner wall of the flat tube 01 are relatively rotatably arranged. A drive assembly 5 for driving the two top support blocks 4 to rotate in opposite directions is also provided on the support plate 3. On both sides of the bottom plate 1 along the length direction of the groove on the limit seat 2, a mounting plate 6 is bolted. The two mounting plates 6 are arranged in parallel. On the opposite sides of the two mounting plates 6 and on both sides of the flat tube 01 in the length direction, extrusion blocks 7 are slidably arranged towards the tube ends of the flat tube 01 close to the top support blocks 4. And a pushing member 8 for driving the extrusion blocks 7 to slide is provided on the mounting plate 6. A necking groove 41 is provided on the top support block 4, and a necking top block 71 is integrally formed on the extrusion block 7 to match the necking groove 41.

[0037] Referring to Figures 1 to 3When the driving assembly 5 drives the two supporting blocks 4 to rotate in opposite directions until the two supporting blocks 4 are supported on the inner side wall of the straight edge of the end of the flat tube 01, at this time, the pushing member 8 drives the extrusion block 7 to slide toward the flat tube 01, and the shrinking top block 71 squeezes the straight edge end of the flat tube 01 toward the shrinking groove 41. As the shrinking top block 71 is continuously squeezed in, the straight edge shrinking of the flat tube 01 is completed.

[0038] Reference Figure 1 A connecting plate 9 is installed on the side of the base plate 1 away from the support plate 3 along the length direction of the groove on the limit seat 2 by bolts, and a support seat 91 is installed on the end of the connecting plate 9 away from the base plate 1 by bolts. The limit seat 2 and the support seat 91 are used together to set the flat tube 01.

[0039] Reference Figures 1 to 3 The driving assembly 5 includes a feed cylinder 51 and a tapered drive rod 52. The feed cylinder 51 is fixedly arranged on the side of the support plate 3 away from the flat tube 01, and the tapered drive rod 52 is coaxially mounted on the end of its piston rod. The piston rod of the feed cylinder 51 can slide through the support plate 3, and its telescopic direction coincides with the center line direction of the groove in the limit seat 2. The tapered drive rod 52 is located between the two top support blocks 4, and is arranged to fit between the inclined surfaces of the top support blocks 4.

[0040] Reference Figure 2 and Figure 3 When it is necessary to shrink the end of the flat tube 01, the feed cylinder 51 is started, and the feed cylinder 51 drives the conical drive rod 52 to move along the center line direction of the groove in the limit seat 2. The conical drive rod 52 and the inclined surface of the top support block 4 are abutted and matched to drive the two top support blocks 4 to rotate relative to each other, so that the two gradually rotate in opposite directions until they are close to the inner side of the straight edge of the flat tube 01.

[0041] Reference Figure 2 and Figure 3 In order to ensure that the two supporting blocks 4 can be stably located inside the flat tube 01 and will not conflict with the inner wall of the flat tube 01 when the flat tube 01 does not need to be shrunk, the present application sets a torsion spring (not shown in the figure) that contacts the support plate 3 on the rotating shaft of the supporting block 4. When the torsion spring is in a natural state, the two supporting blocks 4 can be located inside the flat tube 01 and will not conflict with the inner wall of the flat tube 01 under the action of the elastic force of the torsion spring. This protects the flat tube 01 and ensures the stability and durability of the supporting blocks 4.

[0042] Reference Figure 2, in this embodiment, the pusher 8 is a pressing cylinder 81 fixedly arranged on the opposite sides of the two mounting plates 6. The piston rods of the two pressing cylinders 81 slidably pass through the corresponding mounting plates 6 and extend relatively. The extrusion block 7 is inserted and mounted on the end of the pressing cylinder 81 extending between the two mounting plates 6. And the extrusion block 7 always fits with the side wall of the support plate 3 during the sliding process.

[0043] Referring to Figure 1 , in order to improve the stability of the mounting plate 6 during use, a support member 61 is horizontally arranged between the two mounting plates 6 in this application. And through holes 62 are provided on the two mounting plates 6 at the same horizontal line. The support member 61 includes a support rod 611 and a guide shaft 612. The length of the support rod 611 is matched with the mounting distance between the two mounting plates 6. The guide shaft 612 is coaxially and fixedly arranged at the end of the support rod 611. And a single guide shaft 612 is inserted and matched with a single through hole 62. The diameter size of the guide shaft 612 is smaller than the diameter size of the support rod 611. By inserting the guide shafts 612 at both ends of the support rod 611 into the corresponding through holes 62 respectively, the installation of the support rod 611 is completed, and the two mounting plates 6 are supported by the support rod 611.

[0044] The implementation principle of a cooling pipe straight-edge necking device in an embodiment of this application is as follows: When necking the flat pipe 01 is required, first place the flat pipes 01 together in the grooves of the support seat 91 and the limit seat 2 for positioning; Subsequently, start the feeding cylinder 51. The feeding cylinder 51 drives the conical driving rod 52 to move along the center line direction of the groove in the limit seat 2. By using the abutting cooperation between the conical driving rod 52 and the inclined surface of the top support block 4, the two top support blocks 4 can be driven to rotate relatively, so that the two gradually rotate towards the opposite directions until they abut against the inner side of the straight edge of the flat pipe 01; Then, start the pressing cylinder 81 to make the piston rod of the pressing cylinder 81 extend, thereby pushing the extrusion block 7 to slide towards the flat pipe 01. And during the sliding process, the necking top block 71 squeezes the straight-edge end of the flat pipe 01 into the necking groove 41 until the straight-edge necking of the flat pipe 01 is completed.

[0045] Embodiment 2

[0046] Referring to Figure 4 , the difference between this embodiment and Embodiment 1 is that, in order to adapt to flat pipes 01 of different lengths, a sliding groove 92 is provided on the connecting plate 9 along its own length direction. A sliding block 911 is fixedly arranged at the bottom of the support seat 91. The sliding block 911 is slidably arranged in the sliding groove 92 and is slidably matched with the sliding groove 92.

[0047] Referring to Figure 4, a screw rod 921 is rotatably arranged in the sliding groove 92 along its own length direction. The screw rod 921 is rotatably penetrated through the slider 911 by means of threads. Moreover, a driving motor 93 is fixedly arranged on the side wall of the connecting plate 9. The output shaft of the driving motor 93 rotatably penetrates through the side wall of the connecting plate 9 and extends into the sliding groove 92 to be fixedly connected with the screw rod 921 coaxially.

[0048] Referring to Figure 4 , in order to facilitate observing the moving distance of the support seat 91, a scale 94 is electroplated on the side wall of the connecting plate 9 along its own length direction in this application.

[0049] The implementation principle of Embodiment 2 is that before the necking work progresses, according to the length of the flat tube 01 to be necked, under the monitoring of the scale 94, by starting the driving motor 93, the driving motor 93 drives the screw rod 921 to rotate. Under the action of thread fit, the slider 911 can be driven to drive the support seat 91 to move along the length direction of the sliding groove 92, so as to adjust the distance between the support seat 91 and the limit seat 2, and make the position of the support seat 91 suitable for the flat tube 01 of this specification length, which is convenient for improving the stability of the flat tube 01 installed on the necking device.

[0050] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A straight-edge necking device for a cooling pipe, characterized in that The invention comprises a bottom plate (1), wherein a limiting seat (2) for positioning a flat tube (01) is arranged on the bottom plate (1), a support plate (3) is arranged on one side of the bottom plate (1) along the length direction of the groove on the limiting seat (2), and two supporting blocks (4) for supporting the flat tube (01) are arranged on the support plate (3) so as to rotate relatively toward one side of the limiting seat (2), and the support plate (3) is also provided with a driving assembly (5) for driving the two supporting blocks (4) to rotate in opposite directions, and both sides of the bottom plate (1) located in the length direction of the flat tube (01) are close to the supporting blocks (4) toward the flat tube (01). ) is slidably provided with an extrusion block (7), a shrinking groove (41) is provided on the top support block (4), and a shrinking top block (71) is provided on the extrusion block (7) to match the shrinking groove (41); when the driving component (5) drives the two top support blocks (4) to rotate in opposite directions until the two top support blocks (4) are supported on the inner side wall of the straight edge of the end of the flat tube (01), the extrusion block (7) slides toward the flat tube (01), and the shrinking top block (71) squeezes the straight edge end of the flat tube (01) toward the shrinking groove (41) until the shrinking of the straight edge of the flat tube (01) is completed.

2. The straight-edge necking device for a cooling pipe according to claim 1, characterized in that, The driving assembly (5) comprises a feed cylinder (51) arranged on a side of the support plate (3) away from the flat tube (01), and a conical driving rod (52) arranged at the end of the piston rod of the feed cylinder (51); the piston rod of the feed cylinder (51) slides through the support plate (3), and its telescopic direction coincides with the center line direction of the groove in the limit seat (2); the driving rod (52) is located between the two supporting blocks (4), and the driving rod (52) is arranged to fit the inclined surface of the supporting block (4).

3. A straight-edge necking device for a cooling pipe according to claim 1, characterized in that, A torsion spring that contacts the support plate (3) is sleeved on the rotating shaft of the supporting block (4); when the torsion spring is in a natural state, the two supporting blocks (4) are located inside the flat tube (01) and do not contact the inner wall of the flat tube (01).

4. A straight-edge necking device for a cooling pipe according to claim 1, characterized in that, A mounting plate (6) is provided on both sides of the bottom plate (1) along the length direction of the groove on the limit seat (2), the two mounting plates (6) are arranged in parallel, and a clamping cylinder (81) is provided on the opposite sides of the two mounting plates, the piston rods of the two clamping cylinders (81) slide through the corresponding mounting plates (6) and extend relative to each other, and the extrusion block (7) is provided on the end of the clamping cylinder (81) extending between the two mounting plates (6).

5. A straight-edge necking device for a cooling pipe according to claim 4, characterized in that, A support member (61) is horizontally arranged between the two mounting plates (6), and through holes (62) are opened on the two mounting plates (6) at the same horizontal line. The support member (61) comprises a support rod (611) arranged to match the mounting spacing of the two mounting plates (6), and a guide shaft (612) coaxially arranged at the end of the support rod (611). A single guide shaft (612) is plug-fitted into a single through hole (62), and a diameter of the guide shaft (612) is smaller than a diameter of the support rod (611).

6. The straight-edge necking device for a cooling pipe according to claim 1, wherein, On one side of the bottom plate (1) away from the support plate (3), a connecting plate (9) is arranged along the length direction of the groove on the limit seat (2), and a support seat (91) for erecting a flat tube (01) is arranged at the end of the connecting plate (9) away from the bottom plate (1).

7. The straight-edge necking device for a cooling pipe according to claim 6, characterized in that A sliding groove (92) is formed in the connecting plate (9) along its own length direction. A sliding block (911) slidably matched with the sliding groove (92) is arranged at the bottom of the support seat (91). A screw rod (921) is rotatably arranged in the sliding groove (92) along its own length direction. The screw rod (921) rotatably penetrates through the sliding block (911) through a thread, and a driving motor (93) for driving the screw rod (921) to rotate is further arranged on the connecting plate (9).

8. A straight-edge necking device for a cooling pipe according to claim 7, characterized in that, A scale (94) is arranged on the side wall of the connecting plate (9) along its own length direction.

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