Round edge trimming mechanism

Abstract

The invention discloses a round edge trimming mechanism, and belongs to the technical field of metal strip processing, the round edge trimming mechanism comprises a conveying part, a trimming part and a rolling part which are arranged on the ground, a sinking pit is formed between a first conveying part and a second conveying part, and constant and soft downward traction force is provided by utilizing the gravity of a copper aluminum strip; the core of the trimming part is a horizontal moving part on the supporting platform, and the horizontal moving part drives a plurality of first trimming assemblies (cutter heads) and a plurality of second trimming assemblies (edge guide wheels) which are arranged in a staggered mode to achieve accurate positioning. The first trimming assembly controls the cutting depth through an electric push rod, the second trimming assembly adopts an upper wheel and a lower wheel which are split, the clamping height is adjusted through an internal air cylinder, and the specification of an arc groove of the second trimming assembly is gradually decreased in the machining direction. A stable reciprocating machining area is constructed through non-continuous rolling and active horizontal reciprocating motion of an edge guide wheel at the tail end, and finishing is conducted on the edge of the strip. The problems that burrs, scratches, different sizes, residual stress concentration and the like are prone to being generated in traditional trimming can be solved.

Description

Technical Field

[0001] This invention relates to the field of metal strip processing technology, and in particular to a rounding edge mechanism. Background Technology

[0002] In the field of power transformer manufacturing, copper and aluminum strips are the core materials for winding conductors. The edge quality of these strips directly affects the long-term safety and reliability of the equipment. Currently, the edges of the strips after rolling and slitting are usually sharp right angles or trapezoidal cross sections. This structure has significant defects: First, sharp edges and processing burrs are very likely to puncture the interlayer insulation during winding and operation, causing inter-turn short circuit faults. Second, the electric field concentration effect at the corners will aggravate partial discharge and accelerate insulation aging. Therefore, high-quality rounding treatment (edge ​​rounding) of the copper and aluminum strip edges has become a key pretreatment process to improve the insulation performance of transformers.

[0003] The current industry generally adopts a single-pass mechanical trimming method, which has obvious shortcomings: micro burrs are easily left after processing, resulting in poor surface quality consistency; process adjustment relies on manual experience and is difficult to adapt to different specifications of strips; there is a lack of effective management of processing debris, and residual metal shavings may create new insulation hazards, especially when processing copper-aluminum composite materials, traditional methods are difficult to take into account the differences between the two materials, which can easily lead to edge delamination or uneven corner rounding. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of burrs, poor quality consistency, and insulation hazards caused by processing debris in the existing single-pass trimming process, and to propose a rounding edge mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A rounding edge mechanism includes a ground surface, on which a conveying section, a trimming section, and a winding section are provided; the trimming section includes a support platform, and a horizontally movable section is provided on the top of the support platform; The conveying section includes a first conveying section and a second conveying section, which are used for conveying copper and aluminum strips. A sinkhole is provided on the ground between the first conveying section and the second conveying section. The sinkhole is used to accommodate a portion of the copper-aluminum strip to provide a downward pulling force based on natural gravity.

[0006] In some embodiments, the horizontally moving part includes a support plate and a moving plate; a motor housing is provided on one side of the support plate, a drive motor is provided inside the motor housing, the rotating end of the drive motor passes through the support plate and is provided with a threaded shaft; the end of the threaded shaft away from the motor housing is rotatably connected to the support plate through a bearing; One end of the movable plate is fixedly connected to an internally threaded slider that is threadedly engaged with the threaded shaft; a limiting slide rail is provided at the top of the support platform corresponding to the other end of the movable plate, and the other end of the movable plate is horizontally slidably engaged with the limiting slide rail; a slide rail is provided on the support plate that is horizontally slidably engaged with the internally threaded slider.

[0007] In some embodiments, multiple movable plates are provided, and the bottom of each of the multiple movable plates is provided with a first trimming assembly and a second trimming assembly; two sets of first trimming assemblies are symmetrically arranged on both sides of the copper-aluminum strip; multiple first trimming assemblies and second trimming assemblies are arranged alternately along the copper-aluminum strip conveying direction. The upper surface of the support platform is equipped with edge position sensors that correspond to the outer side of the copper-aluminum strip, which are used to continuously detect the edge positions on both sides of the copper-aluminum strip and keep the center line of the copper-aluminum strip coincide with the processing center line.

[0008] In some embodiments, the first trimming assembly includes a cutting head, a rear seat on one side of the cutting head, and the top of the rear seat is fixedly connected to a movable plate via a connecting post; The rear seat is equipped with an electric push rod, the telescopic end of which is fixedly connected to the middle of the cutter head. By controlling the extension and retraction of the electric push rod, the horizontal position of the cutter head can be adjusted to control the cutting depth.

[0009] In some embodiments, the second trimming assembly includes a guide wheel with an arc groove in the middle; the top of the guide wheel is fixedly connected to the movable plate. A main cylinder is provided between the movable plate and the guide wheel. The fixed end of the main cylinder is fixedly connected to the movable plate, and the telescopic end of the main cylinder is rotatably connected to the top of the guide wheel. The main cylinder has a limit groove on its telescopic end and a limit strip on its fixed end. The end of the limit strip away from the main cylinder is slidably connected inside the limit groove.

[0010] In some embodiments, the guide wheel includes an upper wheel and a lower wheel, with the upper wheel rotatably connected to the telescopic end of the main cylinder; The upper and lower wheels are equipped with a second cylinder. The fixed end of the second cylinder is located in the middle of the upper wheel, and the telescopic end of the second cylinder is connected to the middle of the lower wheel. This cylinder is used to control the distance between the upper and lower wheels to change the height of the arc groove and the clamping state.

[0011] In some embodiments, the top of the cutting head is provided with a suction box, the bottom of the suction box is provided with a suction port corresponding to the blade inside the cutting head, and the top of the suction box is connected to a suction pipe through a suction pipe to maintain negative pressure inside the suction box so as to absorb the debris cut off during trimming.

[0012] In some embodiments, the shape of the blades in the cutting heads of the plurality of first trimming assemblies gradually approaches a rounded edge along the conveying direction of the copper-aluminum strip, and the cutting depth gradually increases. In multiple second trimming assemblies, the height of the arc groove on the guide wheel gradually decreases along the conveying direction of the copper-aluminum strip, and the shape and specifications of the arc groove at the end are consistent with the preset specifications of the target circular edge.

[0013] In some embodiments, the first conveying part includes two fixed plates, and a conveying roller group is provided on the inner side of the two fixed plates. The conveying roller group includes an upper conveying roller and a lower conveying roller, and the copper-aluminum strip is located in the center of the conveying roller group. The inner sides of the two fixed plates are also provided with a spacing adjustment part; the spacing adjustment part includes a bidirectional threaded shaft rotatably connected between the two fixed plates, the two ends of the bidirectional threaded shaft have opposite thread directions, and one end passes through the fixed plate and is connected to a rotating wheel; two internal threaded adjustment plates are threadedly connected to the bidirectional threaded shaft, and the tops of the two internal threaded adjustment plates are respectively vertically rotatably connected to a rotating cylinder.

[0014] In some embodiments, the winding section employs discontinuous winding; after each section of copper-aluminum strip is wound, the winding section locks and fixes it, keeping the copper-aluminum strip taut, and clamps and fixes the local copper-aluminum strip by at least one guide wheel on the front side of the end guide wheel, thus creating a stable reciprocating processing area at the end guide wheel. The drive motor controls the horizontal reciprocating movement of the moving plate corresponding to the end guide wheel, which drives the end guide wheel to reciprocate and level the edge of the copper-aluminum strip; the horizontal movement distance is greater than or equal to the length of the winding section.

[0015] Compared with the prior art, the present invention provides a rounding edge mechanism, which has the following beneficial effects.

[0016] 1. This invention uses an edge position sensor on a support platform to detect the edge position of the copper-aluminum strip, and dynamically adjusts it in conjunction with the drive motor of the horizontal moving part to keep the center line of the copper-aluminum strip aligned with the processing center line. In conjunction with the spacing adjustment part (bidirectional threaded shaft and rotating cylinder) of the first conveying part, manual or automatic fine adjustment is performed when the copper-aluminum strip deviates, thus achieving initial correction and avoiding quality defects such as uneven trimming, over-cutting or under-cutting on one side caused by strip deviation.

[0017] 2. This invention achieves multi-stage progressive processing of "cutting and shaping, and rolling finishing" by employing multiple sets of first and second trimming components staggered along the conveying direction. The cutting depth and arc groove height change progressively, releasing material edge stress step by step and avoiding burrs, tears, or deformation caused by large-mass processing in a single operation. Simultaneously, the constant gravity tension provided by the sinkhole, combined with the traction force of the winding section and the auxiliary tension from the optional liftable rollers, provides a stable and gentle tension environment throughout the processing section, ensuring the strip operates without vibration or slack during processing, thereby obtaining high-quality rounded edges with stable dimensions and a smooth surface.

[0018] 3. This invention incorporates a suction box with a negative pressure suction pipe at the top of the cutting head and the guide wheel. This allows for the timely removal of ribbon-like or granular metal debris generated during cutting and rolling from the processing area, preventing debris from being crushed into the contact area between the strip edge and the arc groove by the rotating guide wheel. This design eliminates defects such as spiral scratches, surface inclusions, and abrasive wear caused by the intrusion of hard debris. It also avoids the problem of debris accumulation on the cutting edge altering the cutting angle, thus maintaining a constant cutting force and rolling force over time, ensuring long-term process stability and product quality reliability.

[0019] 4. This invention constructs a stable "reciprocating processing zone" by controlling the winding section to perform discontinuous winding and using the guide wheel on the front side of the end guide wheel to clamp and fix the strip. Within this zone, the end guide wheel is driven by the horizontal moving part to actively perform horizontal reciprocating rolling and leveling of the copper-aluminum strip edge. This design effectively levels the surface finish and micro-hardness differences along the length of the copper-aluminum strip, and disperses and homogenizes local residual stress accumulated in previous processing. This not only further improves the instantaneous surface quality of the edge, but also improves the mechanical properties of the material at the microstructure level, thereby increasing the fatigue life and long-term dimensional stability of the product edge.

[0020] 5. The overall mechanism of this invention adopts a modular design, and the number and position of the first and second trimming components can be flexibly configured according to processing requirements. An electric push rod precisely controls the cutting depth, while the main cylinder and second cylinder respectively adjust the downward pressure of the guide wheel and the clamping height of the arc groove, enabling the equipment to quickly adapt to copper and aluminum strips of different thicknesses, widths, and target R-angle specifications. The spacing adjustment section of the conveyor also facilitates adaptation to strips of different widths. This height-adjustable flexible design greatly enhances the versatility and processing range of the equipment, meeting the diverse needs of different users; at the same time, the modular structure makes maintenance and replacement of tools or guide wheels more convenient, reducing equipment downtime and maintenance costs.

[0021] Other advantages, objectives and features of the invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be learned from practice of the invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 For the present invention Figure 1 A schematic diagram of the structure from the front view.

[0024] Figure 3 This is a schematic diagram of the structure of the horizontal moving part of the present invention.

[0025] Figure 4 For the present invention Figure 3 A schematic diagram of a local part of the structure.

[0026] Figure 5 This is a schematic diagram of the structure of the first trimming component of the present invention.

[0027] Figure 6 This is a schematic diagram of the structure of the second trimming component of the present invention.

[0028] Figure 7 This is a schematic diagram of the structure of the limiting strip of the present invention.

[0029] Figure 8 This is a schematic diagram of the structure of the large-pitch circular arc groove of the present invention.

[0030] Figure 9 This is a schematic diagram of the structure of the inter-arc grooves in this invention.

[0031] Figure 10 This is a schematic diagram of the gapless circular arc groove of the present invention.

[0032] Figure 11 This is a schematic diagram of the structure of the first cutting tool of the present invention.

[0033] Figure 12 This is a schematic diagram of the structure of the second cutting tool of the present invention.

[0034] Figure 13 This is a schematic diagram of the structure of the third cutting tool of the present invention.

[0035] Figure 14 This is a schematic diagram of the air suction box of the present invention.

[0036] Figure 15 This is a schematic diagram of the bottom structure of the suction box of the present invention.

[0037] Figure 16This is a schematic diagram of the conveying section of the present invention.

[0038] In the picture: 1. Ground; 101. Sinking pit; 2. First conveying section; 201. Fixed plate; 202. Conveying roller assembly; 203. Bidirectional threaded shaft; 2031. Rotating wheel; 204. Internal threaded adjusting plate; 205. Rotating cylinder; 3. Second conveying section; 4. Copper-aluminum belt; 5. Support platform; 6. Horizontal moving section; 601. Support plate; 6011. Threaded rotating shaft; 6012. Motor box; 602. Moving plate; 6021. Internal threaded slider; 60 22. Limiting slide rail; 7. First trimming assembly; 701. Cutting head; 702. Rear seat; 7021. Electric push rod; 703. Connecting column; 704. Suction box; 7041. Suction port; 705. Suction pipe; 8. Second trimming assembly; 801. Guide wheel; 8011. Upper wheel; 8012. Lower wheel; 8013. Arc groove; 8014. Second cylinder; 802. Main cylinder; 8021. Limiting groove; 8022. Limiting strip. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0040] Reference Figure 1 and Figure 2 A rounding edge mechanism includes a ground surface 1, on which a conveying section, a trimming section, and a winding section are provided; the trimming section includes a support platform 5, and a horizontally moving section 6 is provided on the top of the support platform 5; the conveying section includes a first conveying section 2 and a second conveying section 3, which are used for conveying copper-aluminum strip 4; a sinkhole 101 is provided on the ground surface 1 between the first conveying section 2 and the second conveying section 3, the sinkhole 101 accommodating a portion of the copper-aluminum strip 4, which is used to provide a downward pulling force on the copper-aluminum strip 4 based on natural gravity.

[0041] like Figure 3 and Figure 4 As shown, the horizontal moving part 6 includes a support plate 601 and a moving plate 602; a motor housing 6012 is provided on one side of the support plate 601, and multiple drive motors are provided inside the motor housing 6012. The rotating end of the drive motor passes through one side of the support plate 601 and is provided with a threaded rotating shaft 6011; the end of the threaded rotating shaft 6011 away from the motor housing 6012 is rotatably connected to the support plate 601 through a bearing; one end of the moving plate 602 is fixedly connected to an internally threaded slider 6021 that is threadedly engaged with the threaded rotating shaft 6011.

[0042] A limiting slide rail 6022 is provided at the top of the support platform 5, corresponding to the other end of the movable plate 602. The other end of the movable plate 602 slides horizontally with the limiting slide rail 6022. The limiting slide rail 6022 is equipped with limiting balls to reduce friction with the end of the movable plate 602. The threaded shaft 6011 is horizontally arranged, and the support plate 601 is provided with a slide rail that slides horizontally with the internal threaded slider 6021. The slide rail is used to provide horizontal limiting for the internal threaded slider 6021. The movable plate 602 engages with the threaded shaft 6011 through the internal threaded slider 6021, and the other end slides on the limiting slide rail 6022 with limiting balls. The drive motor in the motor housing 6012 drives the threaded shaft 6011 to rotate, thereby achieving smooth and precise horizontal movement.

[0043] Multiple movable plates 602 are provided, and the bottom of the multiple movable plates 602 are respectively provided with a first trimming component 7 and a second trimming component 8; two sets of first trimming components 7 are symmetrically arranged on both sides of the copper-aluminum strip 4; the multiple first trimming components 7 and second trimming components 8 are arranged alternately along the conveying direction of the copper-aluminum strip 4.

[0044] The upper surface of the support platform 5 is provided with an edge position sensor that corresponds to the outer side of the copper-aluminum strip 4; it is used to continuously detect the edge positions on both sides of the copper-aluminum strip 4 to ensure that the center line of the copper-aluminum strip 4 coincides with the processing center line; optionally, the edge position sensor is a laser rangefinder.

[0045] like Figure 5 As shown, the first trimming assembly 7 includes a cutting head 701, a rear seat 702 on one side of the cutting head 701, and the top of the rear seat 702 is fixedly connected to the moving plate 602 via a connecting post 703.

[0046] like Figure 6 As shown, the second trimming assembly 8 includes a guide wheel 801, with an arc groove 8013 in the middle of the guide wheel 801; the top of the guide wheel 801 is fixedly connected to the moving plate 602; a main cylinder 802 is provided between the moving plate 602 and the guide wheel 801, with the fixed end of the main cylinder 802 fixedly connected to the moving plate 602, and the telescopic end of the main cylinder 802 rotatably connected to the top of the guide wheel 801; a rotating groove adapted to the telescopic end of the main cylinder 802 is provided on the top of the guide wheel 801, and a locking element for locking the telescopic end of the main cylinder 802 is provided inside the rotating groove, the locking element being an electromagnetic pin.

[0047] like Figure 5 As shown, the rear seat 702 is equipped with an electric push rod 7021. The telescopic end of the electric push rod 7021 is fixedly connected to the middle of the cutter head 701. By controlling the telescopic movement of the electric push rod 7021, the horizontal position of the cutter head 701 can be adjusted, thereby controlling the cutting depth.

[0048] like Figure 7As shown, a limiting groove 8021 is provided on the telescopic end of the main cylinder 802, and a limiting strip 8022 is provided on the fixed end of the main cylinder 802. The end of the limiting strip 8022 away from the main cylinder 802 is slidably connected inside the limiting groove 8021. The limiting groove 8021 on the telescopic end of the main cylinder 802 and the limiting strip 8022 on the fixed end are matched to limit the rotation of the telescopic end of the main cylinder 802 when the guide wheel 801 rolls the copper-aluminum strip 4. An electromagnetic pin is provided on the end of the limiting strip 8022 located in the limiting groove 8021 for fixing the telescopic end of the main cylinder 802 after telescopic extension and retraction.

[0049] like Figures 8 to 10 As shown, the guide wheel 801 includes an upper wheel 8011 and a lower wheel 8012. The upper wheel 8011 is rotatably connected to the telescopic end of the main cylinder 802. Optionally, a rotating groove adapted to the telescopic end of the main cylinder 802 is provided on the top of the upper wheel 8011. A second locking element, which is an electromagnetic pin, is provided at the end of the telescopic end of the main cylinder 802 near the upper wheel 8011. The rotating groove has a corresponding locking groove that engages with the second locking element. When the electromagnetic pin is energized, the electromagnetic pin... The pin pops out into the locking slot, locking the telescopic end of the main cylinder 802 to the upper wheel 8011. The upper wheel 8011 and the lower wheel 8012 are equipped with a second cylinder 8014. The fixed end of the second cylinder 8014 is located in the middle of the upper wheel 8011, and the telescopic end of the second cylinder 8014 is connected to the middle of the lower wheel 8012. The second cylinder 8014 is used to control the distance between the upper wheel 8011 and the lower wheel 8012. The height and clamping state of the arc groove 8013 used for forming the edge of the strip are changed.

[0050] The invention is installed entirely on the workshop floor 1. The copper-aluminum strip 4 is led out from upstream equipment and guided into this mechanism via the first conveyor section 2 and the second conveyor section 3. After passing through the trimming section, the copper-aluminum strip 4 is led out to the winding section for winding. The winding section can serve as the main traction power and can be selected as a rewinding machine. The winding section is equipped with braking components. Depending on the usage requirements, a third conveyor section can be set between the support platform 5 and the winding section to guide the trimmed copper-aluminum strip 4; or the second conveyor section 3 can be directly installed between the support platform 5 and the winding section.

[0051] A sinkhole 101 is provided in the ground 1 between the first conveying section 2 and the second conveying section 3. The copper-aluminum strip 4 hangs down naturally in this position. The copper-aluminum strip 4 in this position generates a constant and gentle downward pulling force by its own weight, which is used to keep the processing section of the copper-aluminum strip 4 in a basically taut state.

[0052] During initial alignment, the winding section provides initial traction force to the copper-aluminum strip 4. The copper-aluminum strip 4 is tensioned by gravity at the sinking pit 101. The edge position sensor detects in real time. By adjusting the components on the horizontal moving section 6, the initial alignment of the copper-aluminum strip 4 is completed.

[0053] During the trimming of the copper-aluminum strip 4, the strip first passes through two symmetrically arranged first trimming assemblies 7. The electric push rod 7021 in the first trimming assembly 7 controls the cutting head 701, causing the blade inside the cutting head 701 to cut into the edge of the copper-aluminum strip 4 to a predetermined depth, removing a portion of the excess material and creating a preliminary bevel on the edge of the strip. The cutting head 701 is detachably connected to the internal blade, which can be replaced according to its wear level.

[0054] In the second trimming assembly 8 located behind the first trimming assembly 7, the edge is initially rolled and shaped by the arc groove 8013 in the guide wheel 801. During this process, the height of the guide wheel 801 is controlled by the main cylinder 802 to keep the cutter in the cutter head 701 aligned with the arc groove 8013, thus ensuring the stable transverse transport of the copper-aluminum strip 4.

[0055] like Figure 16 As shown, as an example of the first conveying unit 2, the first conveying unit 2 includes two fixed plates 201. A conveying roller assembly 202 is provided inside the two fixed plates 201. The conveying roller assembly 202 includes an upper conveying roller and a lower conveying roller. The copper-aluminum strip 4 is located in the center of the conveying roller assembly 202. A spacing adjustment part is also provided inside the two fixed plates 201. The spacing adjustment part includes a bidirectional threaded shaft 203 rotatably connected between the two fixed plates 201. The threads at both ends of the bidirectional threaded shaft 203 are opposite in direction, and one end of the bidirectional threaded shaft 203 passes through the fixed plate 201 and is fixedly connected to a rotating wheel 2031. A rotating cylinder 205 is vertically rotatably connected to the top of the internal threaded adjustment plate 204. Optionally, the second conveying unit 3 and the third conveying unit have the same structure as the first conveying unit 2. Depending on the usage requirements, the second conveying unit 3 and the third conveying unit can be equipped with other auxiliary components or detection devices according to their location and functional requirements.

[0056] By rotating the rotating wheel 2031, under the threaded engagement of the bidirectional threaded shaft 203 and the internal threaded adjusting plate 204, the two internal threaded adjusting plates 204 can move closer or further apart, thereby adjusting the fit with the copper-aluminum strip 4.

[0057] As an improvement, the impeller 2031 can be driven by a motor (not shown in the figure). The copper-aluminum belt 4 is located in the center of the conveyor roller group 202. When the copper-aluminum belt 4 is offset, the motor drives the bidirectional threaded shaft 203 to rotate, reducing the distance between the two internal threaded adjusting plates 204, so that the two rotating cylinders 205 move closer to each other. The rotating cylinder 205 on the offset side of the copper-aluminum belt 4 makes rotational contact with the edge of the copper-aluminum belt 4 first. As the two rotating cylinders 205 continue to move closer, the copper-aluminum belt 4 maintains its initial centered state.

[0058] Optionally, a liftable roller is provided between the winding section and the end guide wheel 801. The liftable roller is located at the bottom of the copper-aluminum strip 4. Under normal conditions, the liftable roller lifts the copper-aluminum strip 4, causing a partial upward arch. The distance maintained between the liftable roller and the end guide wheel 801 ensures that the partial upward arch of the copper-aluminum strip 4 does not affect its smooth transport. Therefore, when the copper-aluminum strip 4 deviates, during the correction phase, the liftable roller slowly sinks, using the gravity of the copper-aluminum strip 4 within the sinking pit 101 to pull it back. During this process, the inward movement of the rotating cylinder 205 completes the correction of the copper-aluminum strip 4. Optionally, a horizontal movement component can be provided at the bottom of the winding section to control the correction.

[0059] It should be emphasized that multiple sets of the first trimming component 7 and the second trimming component 8 are provided according to usage requirements. After the processing by the first set of the first trimming component 7 and the second trimming component 8, the second and third sets of the first trimming component 7 and the second trimming component 8 are then used for further trimming.

[0060] Multiple first trimming assemblies 7 are conveyed along the copper-aluminum strip 4, and the shape of the cutters within the first trimming assembly 7 gradually approaches the rounded edge, such as... Figures 11 to 13 As shown, the cutting depth of the cutter inside the cutter head 701 increases step by step.

[0061] Similarly, the height of the arc groove 8013 on the guide wheel 801 in the multiple second trimming assemblies 8 also decreases gradually along the conveying direction of the copper-aluminum strip 4 (getting closer and closer to the target R angle); such as Figures 8 to 10 As shown, the shape and specifications of the arc groove 8013 at the end are consistent with the preset specifications of the circular edge of the copper-aluminum strip to be processed, and the surface finish is obtained only by pure rolling. Specifically, the height of the lower wheel 8012 is adjusted step by step by the second cylinder 8014 in multiple upper wheels 8011, thereby gradually reducing the size of the arc groove 8013.

[0062] In actual use, operators have found that the ribbon-like or granular metal chips generated during the machining process are easily crushed by the rotating guide wheel 801 or carried into the contact area between its arc groove 8013 and the edge of the copper-aluminum strip 4. These hard chips will interfere with the stable conveying of the copper-aluminum strip 4, and will also form abrasives that scratch spiral or longitudinal marks on the edge of the copper-aluminum strip 4, or embed into the relatively soft edge of the copper-aluminum strip 4, forming inclusion defects and affecting production quality. In addition, the chips accumulated on the cutting edge of the tool will gradually change the effective cutting angle, causing chipping, breakage, and rapid weakening of cutting force.

[0063] This embodiment is a further improvement on the above embodiment, such as... Figure 14 and Figure 15As shown, a suction box 704 is provided at the top of the cutting head 701, and a suction port 7041 corresponding to the cutting tool in the cutting head 701 is provided at the bottom of the suction box 704. The top of the suction box 704 is connected to a suction pipe through a suction pipe 705. The suction pipe keeps the suction box 704 under negative pressure. The suction port 7041 is used to absorb the debris cut off by the cutting tool, so as to avoid the debris from accumulating at the edge of the cutting tool and the copper-aluminum strip 4. This prevents the debris from being crushed into the contact area between the arc groove 8013 and the edge of the strip by the subsequently rotating guide wheel 801, thus eliminating the decrease in processing quality and process instability caused by the intervention of debris.

[0064] In actual use, the suction box 704, suction pipe 705 and suction pipeline can also be set on the top of the upper wheel 8011. It should be noted that the suction box 704, suction pipe 705 and suction pipeline set on the top of the upper wheel 8011 can rotate coaxially with the upper wheel 8011 to prevent the suction pipe 705 from twisting and getting tangled.

[0065] During the removal of excess material from the copper-aluminum strip 4 and the rolling and shaping process, the suction pipe is kept running. When the arc groove 8013 of the guide wheel 801 rolls the cut edge of the copper-aluminum strip 4 and generates debris, the debris is promptly removed through the suction port 7041. This ensures that the rolling contact interface maintains a constant rolling force and material flow state, avoiding processing defects caused by the intervention of hard debris.

[0066] In practical use, due to the uneven structure of the copper-aluminum strip 4 and the influence of residual stress from previous processing, the finished copper-aluminum strip 4 will exhibit significant differences in surface finish and dimensional fluctuations at its edges. To further improve product quality, the above embodiment is further technically improved as follows: During use, as the first trimming assembly 7 and the second trimming assembly 8 trim the edges of the copper-aluminum strip 4, the winding section uses a non-continuous winding of the copper-aluminum strip 4, and the guide wheel 801 at the end performs a reciprocating motion to level the two sides of the copper-aluminum strip 4 to be wound.

[0067] Specifically, after each section of copper-aluminum strip 4 is wound up by the winding section, it is locked and fixed to keep the copper-aluminum strip 4 taut. Preferably, at this time, the guide wheel 801 on the front side of the end guide wheel 801 can clamp and fix the local copper-aluminum strip 4. That is, the second cylinder 8014 drives the lower wheel 8012 to move upward and reduce the height of the arc groove 8013, thereby clamping and fixing the local copper-aluminum strip 4. In this way, together with the winding section, a stable reciprocating processing zone is constructed at the end guide wheel 801. The reciprocating processing zone can absorb or block the reverse force generated by the reciprocating motion of the end guide wheel 801, preventing the force from being transmitted upstream and downstream, and thus avoiding the disturbance that causes the copper-aluminum strip 4 to vibrate as a whole or in a local area. Using the above method, it is possible to avoid the problem of uneven pressure caused by small-amplitude vibrations of the copper-aluminum strip 4 during the edge trimming process, resulting in wavy patterns, poor smoothness, and inconsistent arc dimensions. This ensures that the edge processing of the copper-aluminum strip 4 achieves the predetermined finishing effect and improves production quality. Next, the drive motor corresponding to the end guide wheel 801 drives the threaded shaft 6011 to rotate in both directions, which in turn drives the moving plate 602 corresponding to the end guide wheel 801 to move horizontally, thereby controlling the horizontal movement of the end guide wheel 801. At this time, the horizontal movement distance of the guide wheel 801 is greater than or equal to the winding length of the copper-aluminum strip 4 by the winding section. Optionally, the end guide wheel 801 can adopt an integral structure other than the upper wheel 8011 and lower wheel 8012. Through the active reciprocating movement of the end guide wheel 801, the surface finish and micro-hardness differences in the length direction of the copper-aluminum strip 4 are leveled, which effectively disperses and homogenizes the local residual stress accumulated during the previous processing, thereby improving the fatigue life of the edge and the long-term dimensional stability.

[0068] Optionally, the reciprocating motion processing steps described above are not limited to the end guide wheel 801. This function is only enabled on the very last set of guide wheels 801 for final finishing; the guide wheels 801 at the front end can be rough-finished through the reciprocating motion processing steps described above, thereby enhancing the processing quality.

[0069] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A rounding edge mechanism, comprising a ground (1), wherein a conveying section, a trimming section, and a winding section are provided on the ground (1); characterized in that, The trimming part includes a support platform (5), and the top of the support platform (5) is provided with a horizontally movable part (6). The conveying section includes a first conveying section (2) and a second conveying section (3), which are used for conveying the copper-aluminum strip (4); The ground (1) is provided with a sinkhole (101) between the first conveying section (2) and the second conveying section (3). The sinkhole (101) is used to accommodate a portion of the copper-aluminum strip (4) to provide a downward pulling force based on natural gravity.

2. The edge-rounding mechanism according to claim 1, characterized in that, The horizontal moving part (6) includes a support plate (601) and a moving plate (602); a motor housing (6012) is provided on one side of the support plate (601), and a drive motor is provided inside the motor housing (6012). The rotating end of the drive motor passes through the support plate (601) and is provided with a threaded shaft (6011); the end of the threaded shaft (6011) away from the motor housing (6012) is rotatably connected to the support plate (601) through a bearing; One end of the movable plate (602) is fixedly connected to an internal threaded slider (6021) that is threadedly engaged with the threaded shaft (6011); a limiting slide rail (6022) is provided at the top of the support platform (5) at the position corresponding to the other end of the movable plate (602), and the other end of the movable plate (602) is horizontally slidably engaged with the limiting slide rail (6022); a slide rail is provided on the support plate (601) that is horizontally slidably engaged with the internal threaded slider (6021).

3. The edge-rounding mechanism according to claim 2, characterized in that, The moving plate (602) is provided in multiple ways, and the bottom of the multiple moving plates (602) is respectively provided with a first trimming component (7) and a second trimming component (8); the two sets of first trimming components (7) are symmetrically arranged on both sides of the copper-aluminum strip (4); the multiple first trimming components (7) and second trimming components (8) are arranged alternately along the conveying direction of the copper-aluminum strip (4); The upper surface of the support platform (5) is provided with an edge position sensor that corresponds to the outer side of the copper-aluminum strip (4) to continuously detect the edge positions on both sides of the copper-aluminum strip (4) and keep the center line of the copper-aluminum strip (4) aligned with the processing center line.

4. The edge-rounding mechanism according to claim 3, characterized in that, The first trimming assembly (7) includes a cutting head (701), and a rear seat (702) is provided on one side of the cutting head (701). The top of the rear seat (702) is fixedly connected to the moving plate (602) through a connecting post (703). The rear seat (702) is equipped with an electric push rod (7021). The telescopic end of the electric push rod (7021) is fixedly connected to the middle of the cutter head (701). By controlling the telescopic extension of the electric push rod (7021), the horizontal position of the cutter head (701) is adjusted to control the cutting depth.

5. The edge-rounding mechanism according to claim 4, characterized in that, The second trimming assembly (8) includes a guide wheel (801), and an arc groove (8013) is provided in the middle of the guide wheel (801); the top of the guide wheel (801) is fixedly connected to the movable plate (602); A main cylinder (802) is provided between the movable plate (602) and the guide wheel (801). The fixed end of the main cylinder (802) is fixedly connected to the movable plate (602), and the telescopic end of the main cylinder (802) is rotatably connected to the top of the guide wheel (801). The main cylinder (802) has a limit groove (8021) on its telescopic end and a limit strip (8022) on its fixed end. The end of the limit strip (8022) away from the main cylinder (802) is slidably connected inside the limit groove (8021).

6. The edge-rounding mechanism according to claim 5, characterized in that, The guide wheel (801) includes an upper wheel (8011) and a lower wheel (8012), with the upper wheel (8011) rotatably connected to the telescopic end of the main cylinder (802); The upper wheel (8011) and the lower wheel (8012) are equipped with a second cylinder (8014). The fixed end of the second cylinder (8014) is located in the middle of the upper wheel (8011), and the telescopic end of the second cylinder (8014) is connected to the middle of the lower wheel (8012). It is used to control the distance between the upper wheel (8011) and the lower wheel (8012) to change the height of the arc groove (8013) and the clamping state.

7. A rounding edge mechanism according to claim 4 or 6, characterized in that, The top of the cutting head (701) is provided with a suction box (704), and the bottom of the suction box (704) is provided with a suction port (7041) corresponding to the blade inside the cutting head (701). The top of the suction box (704) is connected to a suction pipe through a suction pipe (705). The suction pipe keeps the suction box (704) under negative pressure to absorb the debris cut off during trimming.

8. The edge-rounding mechanism according to claim 3, characterized in that, Along the conveying direction of the copper-aluminum strip (4), the shape of the blades in the cutter heads (701) of the multiple first trimming components (7) gradually approaches the round edge, and the cutting depth gradually increases; The height of the arc groove (8013) on the guide wheel (801) in the multiple second trimming components (8) gradually decreases along the conveying direction of the copper-aluminum strip (4), and the shape and specifications of the arc groove (8013) at the end are consistent with the preset specifications of the target circular edge.

9. The edge-rounding mechanism according to claim 1, characterized in that, The first conveying part (2) includes two fixed plates (201), and a conveying roller group (202) is provided on the inner side of the two fixed plates (201). The conveying roller group (202) includes an upper conveying roller and a lower conveying roller, and the copper-aluminum strip (4) is located in the center of the conveying roller group (202). The inner sides of the two fixed plates (201) are also provided with a spacing adjustment part; the spacing adjustment part includes a bidirectional threaded shaft (203) rotatably connected between the two fixed plates (201), the two ends of the bidirectional threaded shaft (203) have opposite thread directions, and one end passes through the fixed plate (201) and is connected to a rotating wheel (2031); two internal threaded adjustment plates (204) are threadedly connected to the bidirectional threaded shaft (203), and the tops of the two internal threaded adjustment plates (204) are respectively vertically rotatably connected to a rotating cylinder (205).

10. A rounding edge mechanism according to claim 5 or 6, characterized in that, The winding section adopts a non-continuous winding; after each section of copper-aluminum strip (4) is wound, the winding section locks and fixes it, the copper-aluminum strip (4) remains taut, and at least one guide wheel (801) on the front side of the end guide wheel (801) clamps and fixes the local copper-aluminum strip (4), and a stable reciprocating processing area is constructed at the end guide wheel (801). The drive motor controls the moving plate (602) corresponding to the end guide wheel (801) to move horizontally back and forth, driving the end guide wheel (801) to perform reciprocating motion to level the edge of the copper-aluminum strip (4); Its horizontal movement distance is greater than or equal to the length of the winding section.

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