A rounding mechanism

Abstract

The application discloses a rounding edge mechanism and belongs to the technical field of metal strip processing. The rounding edge mechanism comprises a conveying part, an edge trimming part and a winding part arranged on the ground, a sinking pit is arranged between the first conveying part and the second conveying part, the constant soft downward pulling force is provided by the gravity of the copper-aluminum strip, the core of the edge trimming part is a horizontal moving part on a supporting platform, the horizontal moving part drives a plurality of first edge trimming assemblies (cutting tool heads) and second edge trimming assemblies (edge guide wheels) arranged in a staggered manner to realize accurate positioning. The first edge trimming assembly controls the cutting depth through an electric push rod, the second edge trimming assembly adopts a split type upper wheel and lower wheel, and the clamping height is adjusted by an internal cylinder, and the specifications of the arc grooves gradually decrease along the processing direction. Through the discontinuous winding and the active horizontal reciprocating motion of the end edge guide wheel, a stable reciprocating processing area is constructed, and the edges of the strip are finished. The rounding edge mechanism can solve the problems of burrs, scratches, different sizes and residual stress concentration that are prone to occurring in the traditional edge trimming.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal strip processing, and in particular to a round edge repairing mechanism. BACKGROUND

[0002] In the field of power transformer manufacturing, copper-aluminum strip is the core material of winding conductor, and the edge quality thereof is directly related to the long-term safety and reliability of equipment operation. At present, the edge of the strip after rolling and slitting is usually sharp right angle or trapezoidal section. Such structure has the following defects: firstly, the sharp edge and processing burr are easy to pierce the interlayer insulation during winding and operation, causing turn-to-turn short circuit fault; secondly, the electric field concentration effect at the edge corner will aggravate partial discharge and accelerate insulation aging. Therefore, high-quality arc processing (round edge repairing) of the copper-aluminum strip edge has become a key pretreatment process for improving the insulation performance of the transformer.

[0003] The current industry generally adopts single-pass mechanical edge repairing method, which has the following obvious deficiencies: micro burrs are easy to be left after processing, and the surface quality consistency is poor; process adjustment depends on manual experience, and it is difficult to adapt to different specifications of strips; there is a lack of effective management of processing debris, and residual metal chips may form new insulation hidden dangers. Especially when processing copper-aluminum composite material, the traditional method is difficult to take into account the difference between the two materials, and is easy to cause edge delamination or uneven round corner. SUMMARY

[0004] The purpose of the present application is to solve the problems of single-pass edge repairing process in the prior art, such as burr generation, poor quality consistency, and insulation hidden dangers caused by processing debris, and a round edge repairing mechanism is proposed.

[0005] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0006] A round edge repairing mechanism, comprising a ground, a conveying part, an edge repairing part and a winding part are arranged on the ground; the edge repairing part comprises a support platform, and a horizontal moving part is arranged on the top of the support platform;

[0007] The conveying part comprises a first conveying part and a second conveying part, and the first conveying part and the second conveying part are used for conveying the copper-aluminum strip;

[0008] A sunken pit is arranged between the first conveying part and the second conveying part on the ground, and the sunken pit is used for accommodating part of the copper-aluminum strip to provide downward pulling force based on natural gravity.

[0009] In some embodiments, the horizontal moving part comprises a support plate and a moving plate; a motor box is arranged on one side of the support plate, a driving motor is arranged in the motor box, a threaded rotating shaft is arranged on the rotating end of the driving motor and penetrates through the support plate; and the threaded rotating shaft is rotatably connected to the support plate through a bearing at the end away from the motor box.

[0010] One end of the moving plate is fixedly connected with an internally threaded sliding block matched with the threaded rotating shaft; a limiting sliding rail is arranged at a corresponding position of the other end of the moving plate on the top of the supporting platform, and the other end of the moving plate is horizontally slidably connected with the limiting sliding rail; and a sliding groove horizontally slidably connected with the internally threaded sliding block is arranged on the supporting plate.

[0011] In some embodiments, a plurality of moving plates are arranged, and the bottoms of the plurality of moving plates are respectively provided with first trimming assemblies and second trimming assemblies; two groups of the first trimming assemblies are symmetrically arranged on the two sides of the copper-aluminum strip; and the plurality of first trimming assemblies and the second trimming assemblies are staggered arranged along the conveying direction of the copper-aluminum strip.

[0012] An edge position sensor corresponding to the outer side of the copper-aluminum strip is arranged on the upper surface of the supporting platform, for continuously detecting the edge positions of the two sides of the copper-aluminum strip, so that the center line of the copper-aluminum strip is kept coinciding with the machining center line.

[0013] In some embodiments, the first trimming assembly comprises a cutter head, a rear seat is arranged on one side of the cutter head, and the top of the rear seat is fixedly connected with the moving plate through a connecting column.

[0014] An electric push rod is arranged in the rear seat, the telescopic end of the electric push rod is fixedly connected with the middle part of the cutter head, and the horizontal position of the cutter head is adjusted to control the cutting depth by controlling the extension and retraction of the electric push rod.

[0015] In some embodiments, the second trimming assembly comprises a guide wheel, and an arc groove is arranged in the middle part of the guide wheel; and the top of the guide wheel is fixedly connected with the moving plate.

[0016] A main air cylinder is arranged between the moving plate and the guide wheel, the fixed end of the main air cylinder is fixedly connected with the moving plate, and the telescopic end of the main air cylinder is rotatably connected with the top of the guide wheel.

[0017] A limiting groove is arranged in the telescopic end of the main air cylinder, and a limiting strip is arranged at the fixed end of the main air cylinder, and the end of the limiting strip away from the main air cylinder is slidably connected in the limiting groove.

[0018] In some embodiments, the guide wheel comprises an upper wheel and a lower wheel, and the telescopic end of the main air cylinder is rotatably connected with the upper wheel.

[0019] A second air cylinder is arranged in the upper wheel and the lower wheel, the fixed end of the second air cylinder is arranged in the middle part of the upper wheel, the telescopic end of the second air cylinder is connected with the middle part of the lower wheel, and the distance between the upper wheel and the lower wheel is controlled to change the height and clamping state of the arc groove.

[0020] In some embodiments, the top of the cutter head is provided with a suction box, the bottom of the suction box is provided with a suction port corresponding to the cutter in the cutter head, and the top of the suction box is connected with a suction pipeline through a suction pipe, so that the suction box maintains negative pressure to absorb the cuttings cut off by the trimming.

[0021] In some embodiments, the first trimming assembly is gradually close to the round edge in shape and the cutting amount is gradually increased in the cutting tool in the cutter head along the conveying direction of the copper-aluminum strip.

[0022] The height of the arc groove on the guide edge wheel of the second trimming assembly gradually decreases along the conveying direction of the copper-aluminum strip, and the shape specification of the arc groove at the end is consistent with the preset specification of the target round edge.

[0023] In some embodiments, the first conveying part includes two fixed plates, the inner sides of the two fixed plates are provided with a conveying roller set, the conveying roller set includes an upper conveying roller and a lower conveying roller, and the copper-aluminum strip is located at the central part of the conveying roller set.

[0024] The inner sides of the two fixed plates are further 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 are opposite in screw direction, and one end penetrates through the fixed plate and is connected with a rotating wheel, and two internally threaded adjusting plates are threadedly connected on the bidirectional threaded shaft, and the tops of the two internally threaded adjusting plates are respectively vertically rotatably connected with rotating cylinders.

[0025] In some embodiments, the winding part adopts discontinuous winding, the winding part is locked and fixed after winding a section of the copper-aluminum strip, the copper-aluminum strip is kept tensioned, at least one guide edge wheel on the front side of the end guide edge wheel clamps and fixes the local copper-aluminum strip, and a stable reciprocating processing area is constructed at the end guide edge wheel.

[0026] The driving motor controls the horizontal reciprocating movement of the moving plate corresponding to the end guide edge wheel, drives the end guide edge wheel to reciprocate the edge of the copper-aluminum strip, and the horizontal movement distance is greater than or equal to the length of the winding section.

[0027] Compared with the prior art, the present application provides a round edge trimming mechanism, which has the following beneficial effects.

[0028] 1、The edge position sensor on the support platform detects the edge position of the copper-aluminum strip, and the driving motor of the horizontal moving part is dynamically adjusted to keep the center line of the copper-aluminum strip coincident with the processing center line, and the spacing adjustment part (bidirectional threaded shaft and rotating cylinder) of the first conveying part is manually or automatically fine-tuned when the copper-aluminum strip deviates, so that initial deviation is corrected, and quality defects such as uneven trimming, one-side overcutting or no cutting caused by strip deviation are avoided.

[0029] 2、The present application realizes multi-stage "cutting shaping, rolling finishing" progressive processing by adopting the scheme that multiple sets of first trimming assemblies and second trimming assemblies are staggered in the conveying direction. The cutting depth and the height of the circular groove change gradually, so that the material edge stress is released gradually, avoiding burrs, tearing or deformation caused by single large excess processing. At the same time, the constant gravity tension provided by the sunken pit is combined with the traction of the winding part and the auxiliary tension of the optional and liftable rotating roller to provide a stable and soft tension environment for the entire processing section, ensuring that the strip is not shaken and relaxed during processing, thereby obtaining a high-quality round edge with stable size and smooth surface.

[0030] 3、The present application sets an air suction box with negative pressure suction pipeline on the top of the cutting head and the edge guide wheel. The generated strip-shaped or granular metal scraps are timely sucked away from the processing area during cutting and rolling, preventing the scraps from being rolled into the contact area of the strip edge and the circular groove by the rotating edge guide wheel. Through this design, defects such as spiral scratches, surface inclusions, and abrasive wear caused by hard scraps are eliminated, and the problem of accumulated cutting angle caused by scraps at the cutting edge is also avoided, which can maintain constant cutting force and rolling force for a long time, ensuring the long-term stability of the process and the reliability of the product quality.

[0031] 4、The present application controls the non-continuous winding of the winding part and uses the edge guide wheel on the front side of the terminal edge guide wheel to clamp and fix the strip, thereby constructing a stable "reciprocal processing area". In this area, the terminal edge guide wheel is driven by the horizontal moving part to actively horizontally reciprocate and roll the copper-aluminum strip edge. Through this design, the smoothness and micro-hardness difference in the length direction of the copper-aluminum strip can be effectively flattened, and the local residual stress accumulated in the previous processing can be dispersed and homogenized. Not only can the instantaneous surface quality of the edge be further improved, but also the mechanical properties of the material can be improved from the microstructure level, thereby improving the fatigue life and long-term stability of the product edge.

[0032] 5、The overall mechanism of the present application adopts modular design, and the number and position of the first trimming assembly and the second trimming assembly can be flexibly configured according to the processing requirements. The electric push rod accurately controls the cutting depth, and the main cylinder and the second cylinder respectively adjust the downward pressure of the edge guide wheel and the clamping height of the circular groove, so that the equipment can quickly adapt to copper-aluminum strips of different thicknesses, widths and target R angle specifications. The spacing adjustment part of the conveying part is also convenient for adapting to strips of different widths. This highly adjustable flexible design greatly enhances the versatility and processing range of the equipment, and can meet the different needs of different users; at the same time, the modular structure also makes it more convenient to maintain, replace tools or edge guide wheels, thereby reducing equipment downtime and maintenance costs.

[0033] Additional advantages, objects, and features of the application will be set forth in part by the description that follows, and in part will become apparent to those skilled in the art upon examination of same; and the applications will be realized and attained by means of the instrumentalities and combinations particularly pointed out herein. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a schematic diagram of the whole structure of the present application.

[0035] Figure 2 It is a schematic diagram of the whole structure of the present application. Figure 1 It is a schematic diagram of the whole structure of the present application.

[0036] Figure 3 It is a schematic diagram of the whole structure of the present application.

[0037] Figure 4 It is a schematic diagram of the whole structure of the present application. Figure 3 It is a schematic diagram of the whole structure of the present application.

[0038] Figure 5 It is a schematic diagram of the whole structure of the present application.

[0039] Figure 6 It is a schematic diagram of the whole structure of the present application.

[0040] Figure 7 It is a schematic diagram of the whole structure of the present application.

[0041] Figure 8 It is a schematic diagram of the whole structure of the present application.

[0042] Figure 9 It is a schematic diagram of the whole structure of the present application.

[0043] Figure 10 It is a schematic diagram of the whole structure of the present application.

[0044] Figure 11 It is a schematic diagram of the whole structure of the present application.

[0045] Figure 12 It is a schematic diagram of the whole structure of the present application.

[0046] Figure 13 It is a schematic diagram of the whole structure of the present application.

[0047] Figure 14 It is a schematic diagram of the whole structure of the present application.

[0048] Figure 15 It is a schematic diagram of the whole structure of the present application.

[0049] Figure 16A structure diagram of a conveying part of the present application.

[0050] In the figure:

[0051] 1, ground; 101, sunken pit; 2, first conveying part; 201, fixed plate; 202, conveying roller group; 203, bidirectional threaded shaft; 2031, rotating wheel; 204, internally threaded adjusting plate; 205, rotating cylinder; 3, second conveying part; 4, copper-aluminum belt; 5, support platform; 6, horizontal moving part; 601, support plate; 6011, threaded rotating shaft; 6012, motor box; 602, moving plate; 6021, internally threaded sliding block; 6022, limiting sliding rail; 7, first trimming assembly; 701, cutter head; 702, rear seat; 7021, electric push rod; 703, connecting column; 704, air suction box; 7041, air suction port; 705, air suction pipe; 8, second trimming assembly; 801, edge guiding wheel; 8011, upper wheel; 8012, lower wheel; 8013, circular arc groove; 8014, second air cylinder; 802, main air cylinder; 8021, limiting groove; 8022, limiting strip. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0053] Referring to Figure 1 and Figure 2 , a round edge trimming mechanism includes a ground 1, the ground 1 is provided with a conveying part, a trimming part and a winding part; the trimming part includes a support platform 5, the top of the support platform 5 is provided with a horizontal moving part 6; the conveying part includes a first conveying part 2 and a second conveying part 3, the first conveying part 2 and the second conveying part 3 are used for conveying a copper-aluminum belt 4; the ground 1 is provided with a sunken pit 101 between the first conveying part 2 and the second conveying part 3, the sunken pit 101 accommodates a part of the copper-aluminum belt 4, and is used for providing a downward pulling force based on natural gravity to the copper-aluminum belt 4.

[0054] As shown in Figure 3 and Figure 4 , the horizontal moving part 6 includes a support plate 601 and a moving plate 602; one side of the support plate 601 is provided with a motor box 6012, a plurality of driving motors are arranged in the motor box 6012, the rotating end of the driving motor penetrates through one side of the support plate 601 and is provided with a threaded rotating shaft 6011; the threaded rotating shaft 6011 is rotatably connected to the support plate 601 through a bearing at the end away from the motor box 6012; one end of the moving plate 602 is fixedly connected with an internally threaded sliding block 6021 which is threadedly matched with the threaded rotating shaft 6011.

[0055] The top of the support platform 5 is provided with a limiting slide rail 6022 corresponding to the position of the other end of the moving plate 602, the other end of the moving plate 602 is horizontally slidably connected with the limiting slide rail 6022; the limiting slide rail 6022 is provided with limiting balls for reducing the friction with the end of the moving plate 602; the threaded rotating shaft 6011 is horizontally arranged, and the support plate 601 is provided with a slide way which is horizontally slidably connected with the internal threaded slide block 6021; the slide way is used for providing horizontal limiting for the internal threaded slide block 6021. The moving plate 602 is connected with the threaded rotating shaft 6011 through the internal threaded slide block 6021, and the other end is slidably arranged on the limiting slide rail 6022 provided with limiting balls; the driving motor in the motor box 6012 drives the threaded rotating shaft 6011 to rotate, so that the horizontal movement is stable and accurate.

[0056] The moving plate 602 is provided with a plurality of moving plates 602, and the bottoms of the plurality of moving plates 602 are respectively provided with a first trimming assembly 7 and a second trimming assembly 8; the two groups of first trimming assemblies 7 are symmetrically arranged on the two sides of the copper-aluminum strip 4; the plurality of first trimming assemblies 7 and the second trimming assemblies 8 are arranged in a staggered manner along the conveying direction of the copper-aluminum strip 4.

[0057] The upper surface of the support platform 5 is provided with an edge position sensor corresponding to the outer side of the copper-aluminum strip 4; the edge position sensor is used for continuously detecting the edge positions of the two sides of the copper-aluminum strip 4, so as to ensure that the center line of the copper-aluminum strip 4 coincides with the processing center line; as an option, the edge position sensor is a laser range finder.

[0058] As shown in Figure 5 , the first trimming assembly 7 comprises a cutter head 701, one side of the cutter head 701 is provided with a rear seat 702, and the top of the rear seat 702 is fixedly connected with the moving plate 602 through a connecting column 703.

[0059] As shown in Figure 6 , the second trimming assembly 8 comprises a guide wheel 801, and an arc groove 8013 is formed in the middle of the guide wheel 801; the top of the guide wheel 801 is fixedly connected with the moving plate 602; a main cylinder 802 is arranged between the moving plate 602 and the guide wheel 801, the fixed end of the main cylinder 802 is fixedly connected with the moving plate 602, and the telescopic end of the main cylinder 802 is rotatably connected with the top of the guide wheel 801; the top of the guide wheel 801 is provided with a rotating groove matched with the telescopic end of the main cylinder 802, and the inside of the rotating groove is provided with a locking piece for locking the telescopic end of the main cylinder 802; the locking piece is an electromagnetic bolt.

[0060] As shown in Figure 5 , the rear seat 702 is provided with an electric push rod 7021, and the telescopic end of the electric push rod 7021 is fixedly connected with the middle of the cutter head 701; the horizontal position of the cutter head 701 is adjusted by controlling the extension and retraction of the electric push rod 7021; the control of the cutting depth is realized.

[0061] As shown in Figure 7As shown, the telescopic end of the main cylinder 802 is provided with a limiting groove 8021, and the fixed end of the main cylinder 802 is provided with a limiting strip 8022, one end of the limiting strip 8022 away from the main cylinder 802 is slidingly connected in the limiting groove 8021; the limiting groove 8021 of the telescopic end of the main cylinder 802 is limitedly matched with the limiting strip 8022 of the fixed end, so that the telescopic end of the main cylinder 802 is prevented from rotating when the guide edge wheel 801 is rolled on the copper-aluminum strip 4. One end of the limiting strip 8022 in the limiting groove 8021 is provided with an electromagnetic bolt, which is used to fix the telescopic end of the main cylinder 802 after the telescopic end is telescoped.

[0062] As shown in the drawings, Figure 8 to Figure 10 As shown, the guide edge wheel 801 comprises an upper wheel 8011 and a lower wheel 8012, the upper wheel 8011 is rotationally connected with the telescopic end of the main cylinder 802; as an option, a rotating groove matched with the telescopic end of the main cylinder 802 is formed in the top of the upper wheel 8011, one end of the telescopic end of the main cylinder 802 close to the upper wheel 8011 is provided with a second locking member, the second locking member is an electromagnetic bolt, and the inside of the rotating groove is provided with a clamping groove matched with the second locking member; when the electromagnetic bolt is electrified, the bolt of the electromagnetic bolt pops out to the clamping groove, so that the telescopic end of the main cylinder 802 is locked and fixed with the upper wheel 8011; the inside of the upper wheel 8011 and the lower wheel 8012 is provided with a second cylinder 8014, the fixed end of the second cylinder 8014 is located in the middle of the upper wheel 8011, the telescopic end of the second cylinder 8014 is connected with the middle of the lower wheel 8012, and the second cylinder 8014 is used to control the distance between the upper wheel 8011 and the lower wheel 8012; the height of the circular groove 8013 used for forming the edge of the strip and the clamping state are changed.

[0063] The whole device is installed on the ground 1 of the workshop, the copper-aluminum strip 4 is led out from the upstream equipment, guided into the device through the first conveying part 2 and the second conveying part 3. After the copper-aluminum strip 4 passes through the edge trimming part, it is led out to be wound on the winding part, the winding part can be used as the main traction power, and the winding part can be selected as a rewinding machine, and the winding part is provided with a braking part. According to the use requirement, the third conveying part can be arranged between the support platform 5 and the winding part to guide the copper-aluminum strip 4 after edge trimming, or the second conveying part 3 is directly arranged between the support platform 5 and the winding part.

[0064] The ground 1 between the first conveying part 2 and the second conveying part 3 is provided with a sunken pit 101, and the copper-aluminum strip 4 naturally sags at this position, and the copper-aluminum strip 4 at this position generates a constant and soft downward pulling force by using its own gravity, so that the processing section of the copper-aluminum strip 4 is kept in a basically tensioned state.

[0065] During initial centering, the winding part provides an initial traction force for the copper-aluminum strip 4, the copper-aluminum strip 4 is tensioned by gravity at the sunken pit 101, and the edge position sensor detects in real time, and the initial centering of the copper-aluminum strip 4 is completed by adjusting each component on the horizontal moving part 6.

[0066] When the copper-aluminum strip 4 is trimmed, the copper-aluminum strip 4 first passes through two symmetrically arranged first trimming assemblies 7. Through the control of the electric push rod 7021 on the cutter head 701 in the first trimming assembly 7, the cutter in the cutter head 701 cuts into the edge of the copper-aluminum strip 4 to a predetermined depth, removes part of the excess amount, and forms a preliminary bevel on the edge of the copper-aluminum strip 4. The cutter head 701 and the cutter inside are detachably connected, and the cutter can be replaced according to the degree of consumption.

[0067] In the second trimming assembly 8 arranged on the rear side of the first trimming assembly 7, the edge is first rolled and shaped through the arc groove 8013 in the edge guide wheel 801. In this process, the height of the edge guide wheel 801 is controlled by the main cylinder 802, the cutter in the cutter head 701 is kept corresponding to the arc groove 8013, and the copper-aluminum strip 4 is kept stable in the horizontal direction.

[0068] As shown in Figure 16 As an example of the first conveying part 2, the first conveying part 2 includes two fixed plates 201, the inner sides of the two fixed plates 201 are provided with a conveying roller set 202, the conveying roller set 202 includes upper and lower conveying rollers, and the copper-aluminum strip 4 is located in the middle part of the conveying roller set 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 threads at the two ends of the bidirectional threaded shaft 203 are opposite in direction, and one end of the bidirectional threaded shaft 203 penetrates through the fixed plate 201 and is fixedly connected with a rotating wheel 2031. A rotating cylinder 205 is vertically rotatably connected to the top of an inner threaded adjusting plate 204. Optionally, the second conveying part 3 and the third conveying part have the same structure as the above-mentioned first conveying part 2, and according to the needs of use, the second conveying part 3 and the third conveying part can add other auxiliary components or detection devices according to their setting positions and functional requirements.

[0069] By rotating the rotating wheel 2031, the two inner threaded adjusting plates 204 are close to or away from each other under the cooperation of the bidirectional threaded shaft 203 and the inner threaded adjusting plate 204, and the fitting state of the copper-aluminum strip 4 can be adjusted.

[0070] As an improvement, the rotating wheel 2031 can be driven by a motor (not shown in the figure), and the copper-aluminum strip 4 is located in the middle part of the conveying roller set 202. When the copper-aluminum strip 4 deviates, the bidirectional threaded shaft 203 is rotated by the motor, the distance between the two inner threaded adjusting plates 204 is reduced, and the two rotating cylinders 205 are close to each other. Among them, the rotating cylinder 205 on the side where the copper-aluminum strip 4 deviates first comes into contact with the edge of the copper-aluminum strip 4 in a rotating manner, and as the two rotating cylinders 205 continue to approach, the copper-aluminum strip 4 maintains the initial centered state.

[0071] 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.

[0072] 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.

[0073] 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... Figure 11 to Figure 13 As shown, the cutting depth of the cutter inside the cutter head 701 increases step by step.

[0074] 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 Figure 8 to Figure 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.

[0075] 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.

[0076] This embodiment is a further improvement on the above embodiment, such as... Figure 14 and Figure 15As shown, the top of the cutter head 701 is provided with a suction box 704, the bottom of the suction box 704 is provided with a suction port 7041 corresponding to the cutter in the cutter head 701, the top of the suction box 704 is connected with a suction pipe 705 through a suction pipe line, the suction box 704 is kept under negative pressure through the suction pipe line, the suction port 7041 is used to absorb the debris cut off by the cutter, to avoid the accumulation of debris on the edge of the copper-aluminum strip 4 between the cutter and the copper-aluminum strip 4, and to prevent the debris from being crushed into the contact area between the circular groove 8013 of the guide edge wheel 801 and the edge of the strip by the subsequent rotating guide edge wheel 801, thereby eliminating the decline in processing quality and process instability caused by the intervention of debris.

[0077] In actual use, the suction box 704, the suction pipe 705 and the suction pipe line can also be provided on the top of the upper wheel 8011. It should be noted that the suction box 704, the suction pipe 705 and the suction pipe line provided on the top of the upper wheel 8011 can rotate coaxially with the upper wheel 8011 to prevent the suction pipe 705 from being twisted and wound.

[0078] The suction pipe line is started during the cutting and rolling of the excess copper-aluminum strip 4, and the debris generated by the circular groove 8013 of the guide edge wheel 801 when rolling the cut edge of the copper-aluminum strip 4 is timely sucked away through the suction port 7041, so as to ensure that the rolling contact interface maintains a constant rolling force and material flow state, and avoids processing defects caused by the intervention of hard debris.

[0079] In actual use, due to the uneven organization of the copper-aluminum strip 4 and the influence of residual stress during previous processing, the finished copper-aluminum strip 4 edge may have a relatively large smoothness difference and size fluctuation problem. In order to further strengthen the production quality of the product, the above embodiment is further technically improved as follows:

[0080] In use, during the edge trimming process of the first edge trimming assembly 7 and the second edge trimming assembly 8 on the edge of the copper-aluminum strip 4, the winding part adopts discontinuous winding of the copper-aluminum strip 4, and the guide edge wheel 801 located at the end reciprocatingly flattens the edges of the copper-aluminum strip 4 to be wound.

[0081] Specifically, after each winding of the copper-aluminum strip 4, the winding part is locked and fixed to keep the copper-aluminum strip 4 tensioned. Preferably, at this time, the end edge guide wheel 801 on the front side of the end edge guide wheel 801 can be used to clamp and fix the local copper-aluminum strip 4, that is, under the action of the second cylinder 8014, the wheel 8012 moves upward to reduce the height of the circular arc groove 8013, so as to clamp and fix the local copper-aluminum strip 4. In this way, a stable reciprocating processing area can be formed at the end edge guide wheel 801 by cooperating with the winding part, which can absorb or block the reverse force generated by the reciprocating movement of the end edge guide wheel 801, prevent the force from being transmitted upstream and downstream, and avoid the disturbance from causing the whole or local copper-aluminum strip 4 to vibrate. By using the above method, the uneven pressure caused by the small amplitude vibration of the edge of the copper-aluminum strip 4 during the edge trimming process can be avoided, and the defects such as waviness, poor finish, and inconsistent arc size can be avoided, so that the edge processing of the copper-aluminum strip 4 can achieve the predetermined finishing effect and improve the production quality. Then, the driving motor corresponding to the end edge guide wheel 801 drives the threaded shaft 6011 to rotate forward and backward, drives the moving plate 602 corresponding to the end edge guide wheel 801 to move horizontally, and then controls the horizontal movement of the end edge guide wheel 801. At this time, the horizontal movement distance of the end edge guide wheel 801 is greater than or equal to the winding length of the copper-aluminum strip 4 by the winding part. As an option, the end edge guide wheel 801 can adopt a whole structure of non-upper wheel 8011 and lower wheel 8012. By actively moving the end edge guide wheel 801, the smoothness and microhardness difference in the length direction of the copper-aluminum strip 4 can be flattened, which can effectively disperse and homogenize the local residual stress accumulated during the previous processing, thereby improving the fatigue life of the edge and the long-term stability of the size.

[0082] As an option, the above reciprocating movement processing procedure is not limited to the end edge guide wheel 801. The above only enables this function for the last group of edge guide wheels 801 for final finishing; the edge guide wheels 801 at the front end can be rough finished by the above reciprocating movement processing procedure to strengthen the processing quality.

[0083] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

[0084] In the description of the specification, the description using the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the present application. The illustrative appearances of the above-mentioned terms in the specification do not necessarily refer to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples, without mutual contradiction.

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. The winding section uses a non-continuous method to wind the copper-aluminum strip (4). The trimming part includes at least one second trimming component (8) disposed at the end. The second trimming component (8) includes a guide wheel (801). The guide wheel (801) has an arc groove (8013) in the middle for rolling the edge of the copper-aluminum strip (4). The winding section is configured to lock and fix each section of copper-aluminum strip (4) after winding it, so that the section of copper-aluminum strip (4) remains taut at the second trimming assembly (8) at the end; the horizontal moving section (6) is configured to drive the second trimming assembly (8) at the end to move horizontally back and forth, so as to perform reciprocating motion to flatten the edge of the section of copper-aluminum strip (4) in the taut state.

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 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 distance that the end guide wheel (801) moves horizontally is greater than or equal to the length of the take-up section.

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