A pipe expansion device for manufacturing electric vehicle frame

Abstract

The present invention relates to the field of pipe expansion technology, specifically to a pipe expansion device for manufacturing electric vehicle frames, including a lateral pressing mechanism, a reverse pressurizing mechanism, a clamping mechanism and a pipe expansion mechanism, wherein the lateral pressing mechanism includes a hydraulic brake component that applies thrust laterally and an auxiliary pad installed in the middle of the hydraulic brake component. A pipe expansion terminal with a gradual structure is provided at one end of the plug, and an inner rod that can be pressed and pushed laterally is movably installed in the inner cavity of the pipe expansion terminal at one end of the plug, and two weight-bearing pads are installed at one end of the inner rod, and a plurality of obliquely distributed sub-rods are movably installed inside a groove on one side of the weight-bearing pad. When an operator uses a hammer to knock the circular annular pad at the outer end of the inner rod, the inner rod as a whole will drive the weight-bearing pad and a plurality of sub-rods to extend outward along the inclined hole on the inner wall of the pipe expansion terminal until the outer end of the sub-rod performs reverse pressurization on the inner wall of the pipe to be expanded, thereby enabling the preheated pipe to be quickly separated from the pipe expansion terminal after expansion.

Description

Technical Field

[0001] The invention relates to the technical field of pipe expansion, in particular to a pipe expansion device for manufacturing an electric vehicle frame. Background Art

[0002] When expanding the pipe, the thin pipe is processed into a thicker pipe using different processes. During the expansion process for different pipes, special expansion equipment, core molds and heating devices are required to work together to achieve local expansion of thin pipes on different equipment. Nowadays, the coverage of electric vehicles on the market is increasing year by year. Therefore, during the manufacturing of electric vehicle frames, the expansion of local pipeline structures on the frames is extremely necessary.

[0003] At present, before different pipelines are expanded, the parts of the pipelines to be expanded need to be preheated, and then the preheated pipelines are transferred to the expansion equipment and hydraulically expanded. However, after the expansion of the preheated pipelines, the area of ​​the expanded part of the pipeline will increase. Therefore, the heat loss of the expanded part will cause the expanded part of the pipeline to be clamped on the outside of the hydraulic expansion assembly, which will make it difficult to remove the pipeline and bring a great workload to the staff.

[0004] According to the above, how to quickly separate the preheating pipe from the hydraulic expansion assembly after the pipe expansion process is the technical difficulty that the present invention needs to solve. Summary of the invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technology.

[0006] To this end, the technical solution adopted in the present invention is:

[0007] A pipe expansion device for manufacturing an electric vehicle frame, comprising a lateral pressing mechanism, a reverse pressure-boosting mechanism, a clamping mechanism and a pipe expansion mechanism, wherein the lateral pressing mechanism comprises a hydraulic brake member for applying a thrust laterally and an auxiliary pad member installed in the middle of the hydraulic brake member, the reverse pressure-boosting mechanism comprises a bracket installed on the hydraulic brake member, a clamping ring welded on the bracket and a tension spring connected to an inner ring groove of the clamping ring, the clamping mechanism comprises a base connected to the hydraulic brake member, a pad tube movably installed in a transverse hole at one end of the base, two fasteners movably installed in a concave hole at the other end of the base and a rubber pad installed in an outer notch of the fastener, the The pipe expansion mechanism includes a plug installed on a hydraulic brake component, a core ring movably installed inside the plug, a spring connected to the core ring, a traction assembly installed in a bracket, and a push tube assembly movably installed inside the plug, the traction assembly includes a column head installed in the bracket, an inclined frame installed on the column head, a crossbeam connected to the inclined frame, a slider welded to one end of the crossbeam, and a positioning frame installed on the plug, and the push tube assembly includes an inner rod movably penetrating into the inner cavity of the plug, two weight-bearing pads installed on one end of the inner rod, a sub-rod movably installed in a groove on one side of the weight-bearing pad, and a cross bar connected between the two weight-bearing pads.

[0008] In a preferred example, the present invention can be further configured as follows: the hydraulic brake component is composed of a hydraulic press, a hydraulic press protective cover and a cross plate, and a clamp for clamping and fixing the plug is installed at the outer end of the hydraulic press rod.

[0009] By adopting the above technical solution, a clamp for clamping the outer end of the plug is installed on the outer end of the sub-rod of the hydraulic press, and the reverse boosting mechanism and the clamping mechanism are laterally fixed as a whole in combination with the inner cross plate of the hydraulic brake, so that the pipeline can be safely expanded.

[0010] In a preferred example, the present invention can be further configured as follows: the bracket is composed of a vertical plate and a T-shaped pad, and the interior of the T-shaped pad is provided with transverse holes distributed in a ring shape.

[0011] By adopting the above technical solution, a T-shaped pad is opened at the top of the bracket, and a transverse hole is opened inside the T-shaped pad. Combined with the lateral fixation of the traction assembly by the T-shaped pad, the clamp ring and the tension spring can provide reverse pulling force to the expanded pipe end inside the plug.

[0012] In a preferred example, the present invention can be further configured as follows: a gradual expansion end is provided at one end of the plug, and evenly distributed holes are provided on the expansion end, and a slide groove is provided on the inner wall of the expansion end at one end of the plug.

[0013] By adopting the above technical scheme, a gradual expansion end is opened at one end of the plug, an annular groove is opened in the expansion end for constraining the core ring for active traction, and holes and annular grooves are opened on the outer wall of the expansion end, so that the pipe after expansion can be prevented from being sealed and clamped by the expansion end.

[0014] In a preferred example, the present invention can be further configured as follows: a rectangular protrusion is provided at the inner end of the slider, and the rectangular protrusion at the inner end of the slider is welded to the core ring.

[0015] By adopting the above technical solution, a horizontal groove is opened on the outer wall of the expansion end of the plug, and a slider is used to limit the groove on the outer wall of the expansion end, so that the core ring can be combined with the clamping ring and the tension spring as a whole to apply effective reverse elastic potential energy.

[0016] In a preferred example, the present invention can be further configured as follows: the positioning frame is composed of a U-shaped support rod and an annular ring, and the U-shaped support rod is welded to the outer wall of the expanded pipe end of the plug, and the inner annular ring of the positioning frame is movably installed on the outside of the beam.

[0017] By adopting the above technical solution, a positioning frame is welded on the outer wall of the expanded pipe end to guide and restrain the crossbeam. When the crossbeam is transversely pulled and driven, the traction assembly distributed in a ring shape outside the plug can provide a stable reverse thrust for the core ring as a whole.

[0018] In a preferred example, the present invention can be further configured as follows: one end of the inner rod that passes through the inside of the expansion end of the plug is provided with two groups of rectangular pads protruding outward, and the rectangular pads are adapted to pass through the holes on the inner wall of the weight-bearing pad.

[0019] By adopting the above technical solution, a circular ring pad is opened at the end of the inner rod away from the expanded pipe end. When the operator hits the circular ring pad of the inner rod with a hammer, the vibration of the inner rod will prompt the load-bearing pad and multiple sub-rods to push the expanded pipe in the opposite direction as a whole.

[0020] In a preferred example, the present invention can be further configured as follows: an I-shaped bearing is provided at one end of the sub-rod that passes through the interior of the weight-bearing pad, and a spherical booster is provided at the outer end of the sub-rod.

[0021] By adopting the above technical solution, a spherical booster is provided at the outer end of the sub-rod. When the spherical booster contacts the inner wall of the pipe to increase pressure, and the bearing at the inner end of the sub-rod and the load-bearing pad are flipped, the pipe can be quickly withdrawn.

[0022] By adopting the above technical solution, the beneficial effects achieved by the present invention are:

[0023] 1. The present invention provides a horizontally placed plug, and a tube expansion end with a gradual structure is provided at one end of the plug, and an inner rod that can be pressed and pushed laterally is movably installed in the inner cavity of the tube expansion end at one end of the plug, and two weight-bearing pads are installed at one end of the inner rod, and a plurality of obliquely distributed sub-rods are movably installed inside the groove on one side of the weight-bearing pad. When the operator uses a hammer to knock the circular ring pad at the outer end of the inner rod, the inner rod as a whole will drive the weight-bearing pad and the plurality of sub-rods to extend outward along the inclined holes on the inner wall of the tube expansion end until the outer end of the sub-rod is reversely pressurized against the inner wall of the expanded pipe, thereby enabling the preheated pipe to be quickly separated from the tube expansion end after expansion.

[0024] 2. The present invention provides a bracket, and installs a clamping ring that penetrates to the outside of the plug on the bracket, and installs a tension spring that applies reverse tension in the annular groove on one side of the clamping ring. A traction component distributed in an annular shape is installed inside the annular gasket on the top of the bracket. The traction component is combined with the active traction of the inner core ring that is movably installed on the expansion end of the plug. At the same time, the reverse pushing effect of the spring after compression is utilized, so that the pipe to be expanded can be subjected to reverse thrust on the outside, thereby ensuring the safe separation of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of an embodiment of the present invention;

[0026] Figure 2 A schematic top view of an embodiment of the present invention;

[0027] Figure 3 An embodiment of the present invention Figure 1 Schematic diagram of local dispersion;

[0028] Figure 4 An embodiment of the present invention Figure 3 Schematic diagram of local dispersion;

[0029] Figure 5 An embodiment of the present invention Figure 2 A partial schematic diagram of

[0030] Figure 6 An embodiment of the present invention Figure 5 Schematic cross-sectional view of ;

[0031] Figure 7 An embodiment of the present invention Figure 6 Schematic diagram of the internal dispersion of

[0032] Figure 8 An embodiment of the present invention Figure 7 A magnified schematic diagram of point A;

[0033] Fig. 9 An embodiment of the present invention Figure 6A partial cross-sectional schematic diagram of ;

[0034] Fig.10 An embodiment of the present invention Fig. 9 Schematic diagram of the internal dispersion.

[0035] Reference numerals:

[0036] 100, lateral pressing mechanism; 110, hydraulic brake component; 120, auxiliary cushion component;

[0037] 200, reverse boost mechanism; 210, bracket; 220, clamp ring; 230, tension spring;

[0038] 300, clamping mechanism; 310, base; 320, pad tube; 330, fastener; 340, rubber pad;

[0039] 400, pipe expansion mechanism; 410, plug; 420, core ring; 430, spring; 440, traction assembly; 441, slider; 442, crossbeam; 443, inclined frame; 444, column head; 445, positioning frame; 450, push tube assembly; 451, inner rod; 452, load-bearing pad; 453, sub-rod; 454, cross bar. DETAILED DESCRIPTION

[0040] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0041] A pipe expanding device for manufacturing an electric vehicle frame provided by some embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0042] Embodiment 1:

[0043] Combination Figure 1-Figure 10 As shown, the present invention provides a tube expanding device for manufacturing an electric vehicle frame, comprising a lateral pressing mechanism 100, a reverse boosting mechanism 200, a clamping mechanism 300 and a tube expanding mechanism 400, wherein the reverse boosting mechanism 200 is installed on the lateral pressing mechanism 100, the clamping mechanism 300 is installed in the lateral pressing mechanism 100, and in addition, the tube expanding mechanism 400 is connected to the lateral pressing mechanism 100.

[0044] The lateral pressing mechanism 100 includes a hydraulic brake component 110 and an auxiliary pad component 120, the reverse boosting mechanism 200 includes a bracket 210, a clamping ring 220 and a tension spring 230, the clamping mechanism 300 includes a base 310, a pad tube 320, a fastener 330 and a rubber pad 340, the tube expansion mechanism 400 includes a plug 410, a core ring 420, a spring 430, a traction assembly 440 and a push tube assembly 450, and the traction assembly 440 also includes a slider 441, a cross beam 442, a diagonal frame 443, a column head 444 and a positioning frame 445, and the push tube assembly 450 also includes an inner rod 451, a weight-bearing pad 452, a sub-rod 453 and a cross rod 454.

[0045] Specifically, the auxiliary pad 120 is installed in the middle of the hydraulic brake 110, the bracket 210 is installed on the hydraulic brake 110, the clamp ring 220 is welded on the bracket 210, the tension spring 230 is connected to the ring groove inside the clamp ring 220, the base 310 is connected to the hydraulic brake 110, the pad tube 320 is movably installed in the transverse hole at one end of the base 310, the two fasteners 330 are movably installed in the concave holes at the other end of the base 310, the rubber pad 340 is installed in the notch outside the fastener 330, the plug 410 is installed on the hydraulic brake 110, the core ring 420 is movably installed inside the plug 410, and the spring 430 is connected to the hydraulic brake 110. On the core ring 420, the traction assembly 440 is installed in the bracket 210, the push tube assembly 450 is movably installed inside the plug 410, the column head 444 is installed in the bracket 210, the inclined frame 443 is installed on the column head 444, the crossbeam 442 is connected to the inclined frame 443, the slider 441 is welded to one end of the crossbeam 442, the positioning frame 445 is installed on the plug 410, the inner rod 451 is movably inserted into the inner cavity of the plug 410, two weight pads 452 are installed on one end of the inner rod 451, the sub-rod 453 is movably installed in the groove on one side of the weight pad 452, and the cross bar 454 is connected between the two weight pads 452.

[0046] A traction assembly 440 distributed in an annular shape is installed inside the annular gasket at the top of the bracket 210, and the traction assembly 440 is used to movably traction the inner core ring 420 of the expanded tube end movably installed on the plug 410. At the same time, the reverse pushing effect of the spring 430 after compression is used, and an inner rod 451 that can be pressed and pushed laterally is movably installed in the inner cavity of the expanded tube end at one end of the plug 410. Then two weight-bearing pads 452 are installed at one end of the inner rod 451, and a plurality of obliquely distributed sub-rods 453 are movably installed inside the groove on one side of the weight-bearing pad 452. When the operator uses a hammer to knock on the circular annular pad at the outer end of the inner rod 451, the inner rod 451 as a whole will drive the weight-bearing pad 452 and the plurality of sub-rods 453 to extend outward along the inclined hole on the inner wall of the expanded tube end until the outer end of the sub-rod 453 is reversely pressurized against the inner wall of the expanded pipe, thereby enabling the preheating pipe to be quickly separated from the expanded tube end after expansion.

[0047] Embodiment 2:

[0048] Combination Figure 3 and Figure 6 As shown, on the basis of the first embodiment, the hydraulic brake member 110 is composed of a hydraulic press, a hydraulic press protective cover and a cross plate, and a clamp for clamping and fixing the plug 410 is installed at the outer end of the hydraulic press rod.

[0049] By installing a clamp for clamping the outer end of the plug 410 at the outer end of the sub-rod of the hydraulic press, and combining the inner cross plate of the hydraulic brake 110 to laterally fix the reverse boosting mechanism 200 and the clamping mechanism 300 as a whole, the pipeline can be safely expanded.

[0050] Embodiment three:

[0051] Combination Figure 5 As shown, on the basis of the first embodiment, the bracket 210 is composed of a vertical plate and a T-shaped pad, and the interior of the T-shaped pad is provided with transverse holes distributed in a ring shape.

[0052] By opening a T-shaped pad at the top of the bracket 210 and a transverse hole inside the T-shaped pad, and combining the T-shaped pad to laterally fix the traction assembly 440, the clamp ring 220 and the tension spring 230 can provide reverse pulling force to the expanded tube end inside the plug 410.

[0053] Embodiment 4:

[0054] Combination Figure 6-Figure 10 As shown, on the basis of Example 1, a gradual expansion end is provided at one end of the plug 410, and the expansion end is provided with evenly distributed holes, a slide groove is provided on the inner wall of the expansion end at one end of the plug 410, a rectangular protrusion is provided at the inner end of the slider 441, and the rectangular protrusion at the inner end of the slider 441 is welded to the core ring 420, the positioning frame 445 is composed of a U-shaped support rod and an annular ring, and the U-shaped support rod is welded to the outer wall of the expansion end of the plug 410, the inner annular ring of the positioning frame 445 is movably installed on the outside of the crossbeam 442, the inner rod 451 passes through the expansion end of the plug 410 at one end and is provided with two groups of rectangular pads protruding outward, and the rectangular pads are adapted to pass through the holes on the inner wall of the weight-bearing pad 452, the sub-rod 453 passes through the weight-bearing pad 452 at one end and is provided with an I-shaped bearing, and the outer end of the sub-rod 453 is provided with a spherical booster.

[0055] An annular groove is provided in the expansion end of the plug 410 to constrain the core ring 420 for active traction, and holes and annular grooves are provided on the outer wall of the expansion end, so as to prevent the expanded pipe from being sealed and clamped by the expansion end. The slider 441 is combined with the limit constraint of the slide groove on the outer wall of the expansion end. When the crossbeam 442 is pulled horizontally, the traction assembly 440 distributed in an annular shape outside the plug 410 can provide a stable reverse thrust for the core ring 420 as a whole, and the operator uses a hammer to After the circular pad of the inner rod 451 is struck, the vibration of the inner rod 451 will prompt the weight-bearing pad 452 and multiple sub-rods 453 to push the expanded pipe in the opposite direction as a whole. At the moment when the spherical booster contacts the inner wall of the pipe to increase pressure, and the activity and flipping between the inner end bearing of the sub-rod 453 and the weight-bearing pad 452, the core ring 420 can be combined with the clamping ring 220 and the tension spring 230 to apply effective reverse elastic potential energy as a whole, and facilitate the rapid separation of the pipe from the expanded end.

[0056] The working principle and use process of the present invention are as follows: the operator needs to pull out the two rubber pads 340 and the fastener 330 as a whole from the wider port at the inner end of the base 310 in advance, then pull out the cushion tube 320 from the other end of the base 310, and then penetrate the pipeline on the electric vehicle along the inside of the cushion tube 320, so that the cushion tube 320 drives the pipeline of the electric vehicle to penetrate the inside of the base 310 as a whole, and then clamp the two fasteners 330 on both sides of the pipeline of the electric vehicle respectively, and flexibly insert the fasteners 330 clamped on both sides of the pipeline into the inner end of the base 310. The hydraulic brake 110 is then started and controlled to expand and extend horizontally, and the hydraulic sub-rod in the hydraulic brake 110 is used to push the plug 410 to extend horizontally as a whole, so that the end of the plug 410 away from the hydraulic brake 110 extends along the inner wall of the electric vehicle pipeline until the end of the plug 410 is expanded against one end of the pipeline as a whole. After the end of the electric vehicle pipeline is expanded, the operator needs to control the hydraulic brake 110 to contract, and use the hydraulic sub-rod in the hydraulic brake 110 to drive the plug 410 to extend horizontally. The whole body shrinks laterally. At this time, the bracket 210, the clamp ring 220 and the tension spring 230 will apply a reverse thrust to the end of the plug 410. Combined with the multiple traction components 440 installed in the bracket 210, the core ring 420 will be pushed in the opposite direction. At the same time, the spring 430 installed on the core ring 420 generates elastic potential energy from compression to release, and the pipe port that passes through the end of the plug 410 will be subjected to double reverse horizontal pressure by the core ring 420. At the same time, the operator needs to hold a hammer against the outer end ring of the inner rod 451 shaped pad to knock, when the inner rod 451 is subjected to an instantaneous impact, the inner rod 451 as a whole can drive the two weight-bearing pads 452 at its inner end and the multiple sub-rods 453 movably installed in the two weight-bearing pads 452 to extend horizontally, and then the sub-rods 453 movably installed in the groove on one side of the weight-bearing pads 452 extend outward along the inclined hole on the inner wall of the end of the plug 410, once the spherical protrusion at the outer end of the sub-rod 453 is pushed in the opposite direction against the inner wall of the pipe after the electric vehicle is expanded, the expanded pipe and the device can be quickly separated.

[0057] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pipe expansion device for manufacturing an electric vehicle frame, characterized in that: It comprises a lateral pressing mechanism (100), a reverse pressurizing mechanism (200), a clamping mechanism (300) and a pipe expanding mechanism (400), The lateral pressing mechanism (100) comprises a hydraulic brake component (110) for applying a lateral thrust, and an auxiliary cushion component (120) installed in the middle of the hydraulic brake component (110); The reverse pressure-boosting mechanism (200) is installed on the lateral pressing mechanism (100), and comprises a bracket (210) installed on the hydraulic brake component (110), a clamping ring (220) welded on the bracket (210), and a tension spring (230) connected to the inner ring groove of the clamping ring (220); The clamping mechanism (300) is installed on the transverse pressing mechanism (100), and comprises a base (310) connected to the hydraulic brake member (110), a pad tube (320) movably installed in a transverse hole at one end of the base (310), two fasteners (330) movably installed in concave holes at the other end of the base (310), and a rubber pad (340) installed in an outer notch of the fastener (330); The pipe expansion mechanism (400) is installed in the lateral pressing mechanism (100), and comprises a plug (410) installed on the hydraulic brake component (110), a core ring (420) movably installed inside the plug (410), a spring (430) connected to the core ring (420), a traction assembly (440) installed in the bracket (210), and a pipe pushing assembly (450) movably installed inside the plug (410); The clamp ring (220) and the tension spring (230) provide a reverse pulling force to the expanded tube end inside the plug (410); By utilizing the elastic potential energy generated by the spring (430) installed on the core ring (420) from compression to release, the pipe port that passes through the end of the plug (410) will be subjected to double reverse horizontal push pressure by the core ring (420); The traction assembly (440) comprises a column head (444) installed in the bracket (210), an inclined frame (443) installed on the column head (444), a crossbeam (442) connected to the inclined frame (443), a slider (441) welded to one end of the crossbeam (442), and a positioning frame (445) installed on the plug (410); The push tube assembly (450) comprises an inner rod (451) movably extending through the inner cavity of the plug (410), two weight-bearing pads (452) mounted on one end of the inner rod (451), a sub-rod (453) movably mounted in a groove on one side of the weight-bearing pad (452), and a cross bar (454) connected between the two weight-bearing pads (452).

2. A pipe expansion device for manufacturing an electric vehicle frame according to claim 1, characterized in that: The hydraulic brake component (110) is composed of a hydraulic press, a hydraulic press protective cover and a transverse plate, and a clamp for clamping and fixing a plug (410) is installed at the outer end of the hydraulic press rod.

3. The pipe expansion device for manufacturing an electric vehicle frame according to claim 1, characterized in that: The support (210) is composed of a vertical plate and a T-shaped pad, and the interior of the T-shaped pad is provided with transverse holes distributed in a ring shape.

4. The pipe expansion device for manufacturing an electric vehicle frame according to claim 1, characterized in that: One end of the plug (410) is provided with a gradual expansion end, and the expansion end is provided with evenly distributed holes, and the inner wall of the expansion end at one end of the plug (410) is provided with a sliding groove.

5. The pipe expansion device for manufacturing an electric vehicle frame according to claim 1, characterized in that: The inner end of the slider (441) is provided with a rectangular protrusion, and the rectangular protrusion at the inner end of the slider (441) is welded to the core ring (420).

6. The pipe expansion device for manufacturing an electric vehicle frame according to claim 1, characterized in that: The positioning frame (445) is composed of a U-shaped support rod and an annular ring, and the U-shaped support rod is welded to the outer wall of the expanded pipe end of the plug (410), and the inner annular ring of the positioning frame (445) is movably installed on the outside of the crossbeam (442).

7. The pipe expansion device for manufacturing an electric vehicle frame according to claim 1, characterized in that: One end of the inner rod (451) that passes through the expanded end of the plug (410) is provided with two groups of rectangular pads protruding outward, and the rectangular pads are adapted to pass through the holes on the inner wall of the load-bearing pad (452).

8. The pipe expansion device for manufacturing an electric vehicle frame according to claim 1, characterized in that: One end of the sub-rod (453) that penetrates into the inside of the weight-bearing cushion (452) is provided with an I-shaped bearing, and the outer end of the sub-rod (453) is provided with a spherical booster.

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