Automatic machine for making balance pieces of cross-flow wind wheels

Abstract

The utility model discloses a kind of through-flow wind wheel balance piece automatic tablet machine, including discharging device, feeding device, forming device, pressing device and material moving device. Discharging device is used to store roll-shaped raw materials. Feeding device is used to straighten the raw materials of discharging device, and raw materials are transported to forming device to right. Forming device includes lower mould, upper mould, cutter and the first driving component for driving upper mould and cutter synchronous movement, and the raw materials located in the shaping cavity are deformed by the lower mould and upper mould die. When the lower mould and upper mould die, cutter will be separated from the shaping cavity and the part of raw materials that has been deformed is cut off to form transition embryo. Pressing device includes movable mould, fixed mould and the second driving component for driving movable mould rotation, and movable mould and fixed mould receive and support transition embryo, and the second driving component can drive movable mould rotation to make movable mould and fixed mould close to each other to clamp transition embryo so that transition embryo is deformed into balance piece. Material moving device is used to remove balance piece located in pressing device.

Description

Technical Field

[0001] This utility model relates to the field of cross-flow wind turbine technology, and in particular to an automatic plate-making machine for cross-flow wind turbine balance plates. Background Technology

[0002] In the manufacturing process of cross-flow fan blades, the preparation and assembly of balance plates are key steps affecting dynamic balance performance. Currently, the balance plate manufacturing equipment commonly used in the industry still relies heavily on manual operation. The raw material feeding operation is complex, requiring manual straightening of the raw materials. After the raw materials are pressed and cut, they need to be picked up and collected manually, resulting in high labor intensity, affecting production efficiency, and posing a high risk to production safety. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention proposes an automatic plate-making machine for a cross-flow impeller balance plate.

[0004] This utility model embodiment provides an automatic sheet making machine for cross-flow impeller balance plates, which includes: a feeding device, a forming device, a pressing device, and a transferring device;

[0005] The feeding device is used to store rolled raw materials;

[0006] The feeding device is used to straighten the raw material of the discharging device and transport the raw material to the right to the forming device;

[0007] The molding device includes a lower mold, an upper mold, a cutter, and a first driving component for driving the upper mold and the cutter to move synchronously. When the lower mold and the upper mold are closed, a shaping cavity is formed and the raw material located in the shaping cavity is deformed by compression. When the lower mold and the upper mold are closed, the cutter cuts off the deformed part of the raw material that has disengaged from the shaping cavity to form a transition blank.

[0008] The pressing device includes a moving mold, a fixed mold, and a second driving component for driving the moving mold to rotate. The moving mold and the fixed mold receive and support the transition blank. The second driving component can drive the moving mold to rotate so that the moving mold and the fixed mold move closer to each other to clamp the transition blank and deform the transition blank into a balance plate.

[0009] The material transfer device is used to remove the balance plate located in the pressing device.

[0010] According to some embodiments of the present invention, the feeding device includes a fixed base, a fixed shaft, a stop block, a first stop disc, and a second stop disc. The fixed shaft is fixedly installed on the fixed base. The first stop disc is located behind the second stop disc and is fixedly connected to the rear end of the fixed shaft. The second stop disc is sleeved rearward on the fixed shaft. A rolled raw material is sleeved on the fixed shaft and located between the first stop disc and the second stop disc. The stop block is threadedly connected to the fixed shaft and is located in front of the second stop disc. The stop block is used to prevent the second stop disc from moving forward away from the fixed shaft.

[0011] According to some embodiments of the present invention, the feeding device further includes a roller, which is sleeved on the fixed shaft and located between the first stop disc and the second stop disc, and the rolled raw material is sleeved on the roller.

[0012] According to some embodiments of the present invention, the feeding device includes a base, a third driving component, a driving wheel, and a roller. The driving wheel and the roller are rotatably connected to the base. The driving wheel and the roller together clamp and straighten the raw material. The third driving component can drive the driving wheel to rotate so that the raw material enters the forming device from left to right.

[0013] According to some embodiments of this utility model, the base includes a first seat and a second seat, the third driving component is mounted on the first seat, the driving wheel is rotatably connected to the first seat, the roller is rotatably connected to the second seat, the second seat is rotatably connected to the first seat, and the feeding device further includes an adjusting bolt, a first guide wheel, and a second guide wheel. The adjusting bolt passes through and is rotatably connected to the first seat, and the lower end of the adjusting bolt is threadedly connected to the second seat. The rotation of the adjusting bolt can cause the second seat to swing relative to the first seat, so that the roller moves closer to or away from the driving wheel. The first guide wheel and the second guide wheel are both rotatably connected to the first seat, the first guide wheel is located above the second guide wheel, and the first guide wheel and the second guide wheel work together to guide the raw material to move from left to right.

[0014] According to some embodiments of the present invention, the outer peripheral surface of the drive wheel is provided with embossing; when the drive wheel presses and transports the raw material, the embossing is imprinted on the upper surface of the raw material.

[0015] According to some embodiments of this utility model, the upper end face of the lower mold is provided with a shaping groove, and the lower end face of the upper mold is provided with a shaping block. The shaping groove extends from left to right, and the cross-sectional projection of the shaping groove along the direction perpendicular to the left and right is V-shaped. The inclination of the groove wall gradually increases from left to right. When the upper mold and the lower mold are closed, the shaping block is inserted downward into the shaping groove, and the area between the shaping block and the shaping groove forms the shaping cavity.

[0016] According to some embodiments of this utility model, the moving mold and the fixed mold together form a receiving groove, the transition blank is placed in the receiving groove, the transition blank includes a front bending part and a rear bending part, the lower end of the front bending part is connected to the lower end of the rear bending part, the right end of the shaping groove is connected to the left end of the receiving groove, the moving mold is located behind the fixed mold, the moving mold can rotate forward to drive the rear bending part of the transition blank to bend forward and approach the front bending part of the transition blank so that the transition blank forms the balance plate.

[0017] According to some embodiments of the present invention, the material transfer device includes a slide rail, a slide base, a fourth driving component, a rotary motor, and a clamping cylinder. The slide base is slidably connected to the slide rail in the left-right direction. The fourth driving component is used to drive the slide base to slide in the left-right direction. The rotary motor is mounted on the slide base. The driving end of the rotary motor is fixedly connected to the clamping cylinder. The rotary motor can drive the clamping cylinder to rotate closer to or away from the receiving trough. The clamping cylinder is used to clamp the balance plate located in the receiving trough.

[0018] According to some embodiments of the present invention, the second driving component includes a mounting base, a swing arm, and a driving cylinder. A rotating shaft is rotatably connected inside the mounting base. The right end of the moving mold is fixedly connected to the rotating shaft. One end of the swing arm is fixedly connected to the rotating shaft. The driving end of the driving cylinder is hinged to the other end of the swing arm.

[0019] The automatic plate-making machine for cross-flow impeller balance plates according to the embodiments of this utility model has at least the following technical effects:

[0020] The rolled material is placed on the feeding device. One end of the rolled material is straightened by the feeding device and continuously conveyed to the right towards the forming device. At this time, the upper and lower molds move away from each other, and part of the material is located on the lower mold. The feeding device stops conveying the material, and the first driving component drives the upper mold downward, causing the upper and lower molds to close, thereby applying pressure to the material located in the shaping cavity and deforming it. The first driving component then drives the upper mold upward away from the lower mold, and the feeding device continues to convey the material to the right, causing the deformed material to detach from the forming device to the right, while the material on the left side remains undeformed. The raw material enters the molding device to the right. The first driving component then moves the upper mold downward, causing the upper and lower molds to close, thus applying pressure to the raw material located in the shaping cavity and deforming it. Simultaneously, the first driving component cuts the deformed raw material that has detached from the molding device to the right, forming a transition blank. The transition blank falls onto the pressing device, where the moving mold and fixed mold jointly support it. The second driving component drives the moving mold to rotate, causing the moving mold and fixed mold to move closer together, flattening the transition blank to form a balance plate. The material transfer device removes the balance plate and transports it to a designated position. This cross-flow impeller balance plate automatic sheet making machine can achieve fully automatic balance plate production with high production efficiency.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

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

[0023] Figure 1 This is a structural schematic diagram of an automatic sheet-making machine for cross-flow impeller balance plates according to some embodiments of this utility model;

[0024] Figure 2 This is an exploded view of the feeding device according to some embodiments of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of a feeding device according to some embodiments of the present invention;

[0026] Figure 4 These are schematic diagrams of the molding device and pressing device according to some embodiments of this utility model;

[0027] Figure 5 This is a partial structural schematic diagram of the molding device and pressing device according to some embodiments of the present utility model;

[0028] Figure 6 This is an exploded view of a portion of the structure of the molding device and the pressing device according to some embodiments of this utility model;

[0029] Figure 7This is an exploded view of a portion of the structure of the molding device and the pressing device according to some embodiments of this utility model;

[0030] Figure 8 This is a cross-sectional view of a portion of the structure of the pressing device according to some embodiments of this utility model;

[0031] Figure 9 This is a partial structural schematic diagram of the pressing device according to some embodiments of the present invention;

[0032] Figure 10 This is a schematic diagram of the structure of the transition embryo as a balance plate in some embodiments of this utility model;

[0033] Figure 11 This is a cross-sectional view of the transitional embryo transformed into a balance plate in some embodiments of this utility model;

[0034] Figure 12 This is a schematic diagram of the material transfer device according to some embodiments of the present invention.

[0035] Icon labels:

[0036] Raw material 100; transition body 110; front bending section 111; rear bending section 112; balance plate 120;

[0037] Feeding device 200; fixed base 210; fixed shaft 220; stop block 230; first stop disc 241; second stop disc 242; roller 250; irregular hole 260;

[0038] Feeding device 300; base 310; first seat 311; second seat 312; third drive component 320; drive wheel 330; roller 340; adjusting bolt 350; first guide wheel 361; second guide wheel 362;

[0039] Molding device 400; lower mold 410; upper mold 420; cutter 430; first driving component 440; shaping cavity 450; shaping groove 460; shaping block 470;

[0040] Material pressing device 500; moving mold 510; fixed mold 520; material receiving chute 530; second drive component 540; mounting base 541; swing arm 542; drive cylinder 543; rotating shaft 544;

[0041] Material transfer device 600; slide rail 610; slide block 620; rotary motor 630; clamping cylinder 640; fourth drive component 650. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0043] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0045] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0046] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0047] According to some embodiments of this utility model, refer to Figures 1 to 12The automatic sheet-making machine with cross-flow impeller balance includes a feeding device 200, a feeding device 300, a forming device 400, a pressing device 500, and a transferring device 600. The feeding device 200 is used to store the rolled raw material 100. The feeding device 300 is used to straighten the raw material 100 in the feeding device 200 and transport the raw material 100 to the right to the forming device 400. The forming device 400 includes a lower mold 410, an upper mold 420, a cutter 430, and a first driving component 440 for driving the upper mold 420 and the cutter 430 to move synchronously. When the lower mold 410 and the upper mold 420 are closed, a shaping cavity 450 is formed, and the raw material 100 located in the shaping cavity 450 is deformed by pressure. When the lower mold 410 and the upper mold 420 are closed, the cutter 430 cuts off the deformed part of the raw material 100 that has left the shaping cavity 450 to form a transition blank 110. The pressing device 500 includes a moving mold 510, a fixed mold 520, and a second driving component 540 for driving the moving mold 510 to rotate. The moving mold 510 and the fixed mold 520 receive and support the transition blank 110. The second driving component 540 can drive the moving mold 510 to rotate, causing the moving mold 510 and the fixed mold 520 to move closer together to clamp the transition blank 110, thereby shaping the transition blank 110 into a balance plate 120. The transferring device 600 is used to remove the balance plate 120 located in the pressing device 500.

[0048] The first drive component 440 can be a crank-slider mechanism driven by a high-precision servo motor or a precision cylinder, which simultaneously performs pressing and forming of the newly fed raw material 100 and cutting of the already formed raw material 100 in one work cycle. This coordinated action avoids setting up separate cutting stations and drive mechanisms, simplifies the equipment structure, shortens the cycle time of single-piece production, and achieves a high degree of process integration and maximizes efficiency.

[0049] Understandably, the rolled raw material 100 is placed on the feeding device 200. One end of the rolled raw material 100 is straightened by the feeding device 300 and continuously conveyed to the right towards the forming device 400. At this time, the upper mold 420 and the lower mold 410 move away from each other, and part of the raw material 100 is located on the lower mold 410. The feeding device 300 stops conveying the raw material 100, and the first driving component 440 drives the upper mold 420 to move downward, causing the upper mold 420 and the lower mold 410 to close, thereby applying pressure to the raw material 100 located in the shaping cavity 450 to deform it. The first driving component 440 then drives the upper mold 420 to move downward, causing the upper mold 420 and the lower mold 410 to close, thereby applying pressure to the raw material 100 located in the shaping cavity 450 to deform it. As the material moves upward away from the lower mold 410, the feeding device 300 continues to transport the raw material 100 to the right, causing the deformed raw material 100 to detach from the molding device 400 to the right, while the undeformed raw material 100 on the left side enters the molding device 400 to the right. The first driving component 440 then drives the upper mold 420 to move downward, causing the upper mold 420 and the lower mold 410 to close, thereby applying pressure to the raw material 100 located in the shaping cavity 450 to deform it. At the same time, the first driving component 440 cuts the deformed raw material 100 that has detached from the molding device 400 to the right to form a transition blank 110. The transition blank 110 falls onto the pressing device 500. The moving mold 510 and the fixed mold 520 jointly support the transition blank 110. The second driving component 540 drives the moving mold 510 to rotate, causing the moving mold 510 and the fixed mold 520 to move closer together, thereby flattening the transition blank 110 to form a balance plate 120. The material transfer device 600 removes the balance plate 120 and transports it to a designated position. This cross-flow impeller balance plate automatic plate making machine can achieve fully automatic production of balance plates 120 with high production efficiency.

[0050] According to some embodiments of this utility model, refer to Figure 2The feeding device 200 includes a fixed base 210, a fixed shaft 220, a stop block 230, a first stop disc 241, and a second stop disc 242. The first stop disc 241, the second stop disc 242, and the fixed shaft 220 are coaxially arranged with the axis in the front-to-back direction. The fixed shaft 220 is fixedly installed on the fixed base 210. The first stop disc 241 is located behind the second stop disc 242 and is fixedly connected to the rear end of the fixed shaft 220. The second stop disc 242 is sleeved rearward on the fixed shaft 220. The rolled raw material 100 is sleeved on the fixed shaft 220 and located between the first stop disc 241 and the second stop disc 242. The stop block 230 is threadedly connected to the fixed shaft 220 and is located in front of the second stop disc 242. The stop block 230 is used to prevent the second stop disc 242 from moving forward away from the fixed shaft 220. The rolled material 100 is fitted onto the fixed shaft 220. The feeding device 300 pulls the material 100, causing the rolled material 100 to rotate relative to the fixed shaft 220 and unwind. When the rolled material 100 on the unwinding device 200 is exhausted and new rolled material 100 needs to be added, simply rotate the stop block 230 to disengage it from the fixed shaft 220. At this time, the stop block 230 no longer obstructs the second stop disc 242, and the second stop disc 242 can move forward and disengage from the fixed shaft 220. At this time, the new rolled material 100 can be fitted onto the fixed shaft 220 from front to back. Then, the second stop disc 242 is fitted back onto the fixed shaft 220, and the stop block 230 is threaded back onto the fixed shaft 220, thereby completing the reinstallation of the second stop disc 242 and the replenishment of new rolled material 100.

[0051] Preferably, the second stop disc 242 has a shaped hole 260 in the middle. When the stop block 230 is rotated to align with the shaped hole 260, the stop block 230 no longer obstructs the second stop disc 242, allowing it to move forward away from the fixed shaft 220. If the stop block 230 is rotated so that it is no longer aligned with the shaped hole 260, it will then block the second stop disc 242. This method avoids the need to remove the stop block 230 from the fixed shaft 220; simply rotating the stop block 230 is sufficient, improving the efficiency of replenishing the raw material 100. The shaped hole 260 is designed as a circular or elongated hole with a notch, while the head of the stop block 230 is designed with a corresponding non-circular cross-section, such as rectangular or T-shaped. In the locked state, the wide side of the stop block 230 is engaged with the outer wall of the hole in the second stop disc 242, forming an effective obstruction. When material needs to be changed, the operator only needs to rotate the stop block 230 by a certain angle so that its narrow edge aligns with the wide slot of the irregular hole 260. Then, without completely unscrewing the stop block 230, it can be passed directly through the irregular hole 260 to quickly remove the second stop disc 242. This avoids the cumbersome step of completely unscrewing the stop block 230 from the fixed shaft 220, prevents the loss of the stop block 230, shortens the downtime due to material changes, and improves the overall utilization rate of the equipment.

[0052] Preferably, the unloading device 200 further includes a roller 250, which is sleeved on the fixed shaft 220 and located between the first stop disc 241 and the second stop disc 242. The rolled material 100 is sleeved on the roller 250. When the rolled material 100 is unwound, the roller 250 can rotate with the material 100, thereby reducing the friction between the material 100 and the unloading device 200. This ensures the smoothness of the unwinding process and the stability of the tension. Without the roller 250, the inner ring of the rolled material 100 would directly slide against the fixed shaft 220. As the diameter of the rolled material decreases, the influence of the frictional torque on the unwinding tension becomes more significant, which may cause slippage or tension fluctuations when the feeding device 300 pulls the material, thus affecting the feeding accuracy. The roller 250 can adopt a structure with built-in bearings, which transforms sliding friction into rolling friction, greatly reducing the unwinding resistance. To ensure that the feeding device 300 can feed the material with a relatively constant tension regardless of how much material is left in the roll, the dimensional accuracy of subsequent processes is precisely controlled, thus ensuring the stability and precision of the material 100 conveying.

[0053] According to some embodiments of this utility model, refer to Figure 3The feeding device 300 includes a base 310, a third driving component 320, a driving wheel 330, and a roller 340. Both the driving wheel 330 and the roller 340 are rotatably connected to the base 310, with their axes pointing forward and backward. The driving wheel 330 is positioned above the roller 340. The driving wheel 330 and roller 340 together clamp and straighten the raw material 100. The third driving component 320 drives the driving wheel 330 to rotate, allowing the raw material 100 to enter the forming device 400 from left to right. The third driving component 320 is a stepper motor or servo motor, and its rotation angle is precisely controlled by a controller, thereby precisely controlling the conveying length of the raw material 100, which is crucial for ensuring the consistent length of each balance plate 120. The strong clamping action of the driving wheel 330 and the roller 340 not only provides conveying power but, more importantly, uses pressure to cause plastic deformation of the metal raw material 100 strip with curl memory, thus achieving a straightening effect.

[0054] Preferred, refer to Figure 3The base 310 includes a first base 311 and a second base 312. A third drive component 320 is mounted on the first base 311. A drive wheel 330 is rotatably connected to the first base 311. A roller 340 is rotatably connected to the second base 312. The second base 312 is rotatably connected to the first base 311. The feeding device 300 also includes an adjusting bolt 350, a first guide wheel 361, and a second guide wheel 362. The adjusting bolt 350 passes through and is rotatably connected to the first base 311. The lower end of the adjusting bolt 350 is threadedly connected to the second base 312. A rotation of 50° causes the second seat 312 to swing relative to the first seat 311, moving the roller 340 closer to or further away from the drive wheel 330. The first guide wheel 361 and the second guide wheel 362 are both rotatably connected to the first seat 311 with their axes pointing forward and backward. The first guide wheel 361 is positioned above the second guide wheel 362. The first guide wheel 361 and the second guide wheel 362 work together to guide the material 100 from left to right, and the material 100 also acts as a leveling element when passing between the first guide wheel 361 and the second guide wheel 362. The first guide wheel 361 and the second guide wheel 362 are located to the left of the drive wheel 330 and the roller 340. Baffles are provided on the outer surfaces of the front and rear sides of the first guide wheel 361 to prevent the material 100 from deviating during its movement from left to right. The adjusting bolt 350 allows the operator to precisely adjust the gap and pressure between the drive wheel 330 and the roller 340 according to the actual thickness of the material 100 strip. Preferably, a spring is fitted onto the adjusting bolt 350, with the spring pre-pressed between the adjusting bolt and the first seat 311 to provide a continuous and stable preload, preventing the adjusting bolt 350 from loosening due to equipment vibration and making gap adjustment smoother. Insufficient pressure will cause feeding slippage and inaccurate length; excessive pressure will damage the surface of the raw material 100 and even change its thickness. The adjusting bolt 350 ensures that the optimal clamping force can be applied to raw materials 100 of different specifications. The first guide wheel 361 and the second guide wheel 362 ensure that the raw material 100 is accurately aligned before entering the core drive wheel 330 and roller 340, preventing the raw material 100 from deviating and avoiding positional deviations in subsequent processes, thus ensuring the stability of the entire production process.

[0055] Preferably, a metal-sensitive sensor is arranged above the path through which the raw material 100 passes, after the first guide wheel 361 and the second guide wheel 362 and before the drive wheel 330 and the roller 340, to monitor the presence of the raw material 100 in real time, thereby detecting whether the raw material 100 has been used up. Once the raw material 100 is used up, the sensor will send a signal to automatically stop the equipment and sound an alarm, prompting the operator to replace it with new material.

[0056] Preferably, the outer peripheral surface of the drive wheel 330 is embossed; when the drive wheel 330 presses and transports the raw material 100, the embossing is imprinted on the upper surface of the raw material 100. It is understood that the upper surface of the raw material 100 is imprinted with a slightly uneven structure when passing through the drive wheel 330. After being processed by the subsequent forming device 400 and pressing device 500, the center of the raw material 100 is concave downwards to form a V-shaped flat balance plate 120, meaning the inner surface of the balance plate 120 has this slightly uneven structure. When the balance plate 120 is clamped on the fan blade, this slightly uneven structure increases the friction between the balance plate 120 and the fan blade, preventing the balance plate 120 from falling off. Furthermore, the embossing (e.g., diamond or straight knurling) increases the static friction coefficient between the drive wheel 330 and the raw material 100, ensuring precise, slip-free feeding under motor drive. The raw material 100 is "surface modified" simultaneously with feeding. Embossing creates regular, minute raised and recessed structures on the inner surface of the balance plate 120. When the balance plate 120 is finally assembled onto the blades of the cross-flow fan, this textured contact surface greatly increases the coefficient of friction between the two, equivalent to adding countless tiny "wedges" to the contact surface. This significantly improves the clamping reliability of the balance plate 120, effectively preventing displacement or detachment under the centrifugal force and vibration generated by the high-speed rotation of the fan. This simultaneously solves the problems of feeding accuracy and the reliability of the final product.

[0057] According to some embodiments of this utility model, refer to Figures 4 to 8 The upper end face of the lower mold 410 is provided with a shaping groove 460, and the lower end face of the upper mold 420 is provided with a shaping block 470. The shaping groove 460 extends from left to right, and the cross-sectional projection of the shaping groove 460 perpendicular to the left-right direction is V-shaped. The inclination of the groove wall of the shaping groove 460 gradually increases from left to right. When the upper mold 420 and the lower mold 410 are closed, the shaping block 470 is inserted downward into the shaping groove 460, and the area between the shaping block 470 and the shaping groove 460 forms a shaping cavity 450. The raw material 100 enters the shaping groove 460 of the lower mold 410 from left to right, and the upper mold 420 moves downward to press the raw material 100 into the shaping groove 460, thereby deforming the raw material 100.

[0058] It can be understood that the raw material 100 is elongated and horizontal. During the process of the raw material 100 entering the molding device 400 to the right and exiting the molding device 400, the upper mold 420 and lower mold 410 complete multiple mold closing and opening cycles. For example, if a portion of the raw material 100 enters the molding device 400, moves a distance to the right, and stops, the upper mold 420 and lower mold 410 perform one mold closing and opening cycle. This portion then continues to move a distance to the right and stops, and the upper mold 420 and lower mold 410 perform another mold closing and opening cycle, and so on. The raw material 100 within the molding device 400 is repeatedly pressed and shaped. Because the inclination of the shaping groove 460 gradually increases from left to right, it prevents the raw material 100 from being pressed to a sufficient inclination in a single press, avoiding excessive inclination that could lead to product defects. This allows the raw material 100 to gradually concave downwards from the center to form a V-shape under repeated pressing and deformation. After the rightmost end of the material 100 after deformation leaves the molding device 400, the cutter 430 moves downward when the molding device 400 closes the mold again, thereby cutting off the part of the material 100 that has left the molding device 400 to the right to form a transition blank 110, which falls downward onto the pressing device 500.

[0059] Therefore, a "progressive" or "step-by-step" forming of the raw material 100 is achieved. Driven by the feeding device 300, the raw material 100 strip passes intermittently and step-by-step through the forming device 400. Along its path, with each stamping, different parts of the raw material 100 are subjected to the action of a die with varying inclinations. This avoids large-scale bending of the metal material in a single stamping, as this can easily lead to material tearing, excessive stretching and thinning, or severe springback, thus affecting the precision of the finished product. Through this multi-step, small-deformation accumulation, the raw material 100 is gently and gradually bent into a V-shape, resulting in more uniform stress distribution, higher forming quality, and better dimensional stability.

[0060] According to some embodiments of this utility model, refer to Figures 5 to 7 , Figures 9 to 11The moving mold 510 and the fixed mold 520 together form a receiving groove 530. A transition blank 110 is placed within the receiving groove 530. The transition blank 110 includes a front bent portion 111 and a rear bent portion 112. The lower end of the front bent portion 111 is connected to the lower end of the rear bent portion 112. The right end of the shaping groove 460 is connected to the left end of the receiving groove 530. The moving mold 510 is located behind the fixed mold 520. The forward rotation of the moving mold 510 causes the rear bent portion 112 of the transition blank 110 to bend forward and approach the front bent portion 111, thus flattening the transition blank 110 and forming a balance plate 120. The moving mold 510 and the fixed mold 520 are typically made of high-hardness mold steel and have undergone heat treatment to withstand repeated impacts and pressures. Preferably, the fixed mold 520 is a floating fixed mold that can float up and down. The rotating and flattening action of the moving mold 510 performs the final shaping of the V-shaped blank, causing its two arms to fit parallel and together, forming a U-shaped clamp with a specific opening width. Furthermore, the work-hardening effect imparts sufficient elasticity and clamping force to the balance plate 120, ensuring it can be firmly clamped onto the fan blade. Dividing preforming and final shaping into two independent stations—the forming device 400 and the pressing device 500—simplifies the mold structure of each station, reduces design and manufacturing costs, and also facilitates separate debugging and maintenance.

[0061] Preferably, the lower end face of the cutter 430 is machined to match the contour of the V-shaped receiving groove 530 of the lower pressing device 500. When the first driving component 440 drives the upper mold 420 and the cutter 430 to descend synchronously, the cutting edge of the cutter 430 first cuts the formed V-shaped raw material 100, separating the independent transition blank 110. At the same time, the V-shaped lower end face of the cutter 430 acts as a positioning pressure head, pressing the just-cut transition blank 110 downwards in a precise positioning manner and into the receiving groove 530, avoiding uncertainties such as bouncing, flipping, or positional displacement that may occur during the descent of the transition blank 110. More preferably, the cutter 430 is provided with a retractable clamping structure, which can extend under the push of the driving component. After the cutter 430 completes the cutting action, the clamping structure extends and presses the cut transition blank 110 onto the floating fixed mold 520 of the pressing device 500. When the main body of the cutter 430 is reset upward, the clamping structure maintains the clamping state under the drive until the clamping cylinder 640 of the transfer device 600 clamps the long side of the transition blank 110, and then the clamping structure returns to its original position.

[0062] This design greatly improves the success rate of subsequent pressing processes and the consistency of the final product, enhances the stability and reliability of the whole machine operation, and is a key guarantee for achieving high-efficiency, high-quality automated production.

[0063] According to some embodiments of this utility model, refer to Figure 12The material transfer device 600 includes a slide rail 610, a slide block 620, a fourth drive component 650, a rotary motor 630, and a clamping cylinder 640. The slide block 620 is slidably connected to the slide rail 610 in the left-right direction. The fourth drive component 650 is used to drive the slide block 620 to slide in the left-right direction. The rotary motor 630 is mounted on the slide block 620. The drive end of the rotary motor 630 is fixedly connected to the clamping cylinder 640. The rotary motor 630 can drive the clamping cylinder 640 to rotate closer to or away from the receiving trough 530. The clamping cylinder 640 is used to clamp the balance plate 120 located in the receiving trough 530. After the fourth drive component 650 drives the slide 620 to move to the left to the designated position, the rotary motor 630 rotates and drives the clamping cylinder 640 to rotate backward to the designated position. The clamping cylinder 640 clamps the balance plate 120 located on the receiving trough 530. The rotary motor 630 then drives the clamping cylinder 640 to rotate in the opposite direction back to the initial angle. The fourth drive component 650 drives the slide 620 to move to the right to the designated position. The clamping cylinder 640 releases the balance plate 120 and collects the balance plate 120 to the designated position.

[0064] Preferably, a translation component that moves in the front-to-back direction and a lifting component that moves in the up-and-down direction are also provided between the slide 620 and the rotary motor 630. Specifically, the translation component is mounted on the slide 620, the lifting component is mounted on the translation component, and the rotary motor 630 is mounted on the lifting component, thereby enabling the rotary motor 630 to move in the front-to-back, left-to-right, and up-and-down directions to adapt to more complex material handling postures and positional requirements.

[0065] The fourth drive component 650 can be a servo motor paired with a ball screw to achieve fast and precise horizontal positioning; or, when cost is a lower constraint, a cylinder can be used. The fourth drive component 650 drives the slide 620 to move left and right over a wide range. The rotary motor 630 is a stepper motor or a small servo motor, providing one degree of rotational freedom, allowing the clamping cylinder 640 to precisely "bend" into the receiving trough 530. The clamping cylinder 640, with its fast response and stable clamping force, reliably grasps the finished product balance plate 120. This multi-degree-of-freedom combined motion accurately simulates the picking, turning, translating, and placing actions of a human hand, with speed and repeatability far exceeding manual operation, ensuring stable production rhythm and orderly collecting finished products into designated containers.

[0066] According to some embodiments of this utility model, refer to Figure 4 and Figure 6The second driving component 540 includes a mounting base 541, a swing arm 542, and a driving cylinder 543. A rotating shaft 544 is rotatably connected inside the mounting base 541. The right end of the moving mold 510 is fixedly connected to the rotating shaft 544. One end of the swing arm 542 is fixedly connected to the rotating shaft 544. The driving end of the driving cylinder 543 is hinged to the other end of the swing arm 542. The extension and retraction of the driving cylinder 543 can drive the swing arm 542 to rotate, thereby driving the rotating shaft 544 and the moving mold 510 to rotate, so that the front side of the moving mold 510 moves closer to or further away from the fixed mold 520.

[0067] The workflow of this utility model includes:

[0068] By rotating the stop block 230 located at the front end of the fixed shaft 220 of the unloading device 200, its specific shape is aligned with the irregular hole 260 in the middle of the second stop disc 242. This allows the second stop disc 242 to be quickly passed through and removed without completely unscrewing the stop block 230. Subsequently, a whole roll of strip metal material 100 is placed on the roller 250 built between the first stop disc 241 and the second stop disc. This roller 250 can rotate freely as the material 100 is unwound, converting the sliding friction between the inner ring of the material 100 and the fixed shaft 220 into rolling friction, greatly reducing unwinding resistance and ensuring constant and smooth tension in the subsequent feeding process. After loading, the second stop disc 242 is put back onto the fixed shaft 220, and the stop block 230 is rotated in the opposite direction to lock the second stop disc 242, thus reliably limiting the axial movement of the roll and preventing it from shifting or unwinding during high-speed operation.

[0069] After production starts, the end of the raw material strip 100 is manually fed into the feeding device 300. The raw material 100 first passes through a guiding mechanism composed of a first guide wheel 361 and a second guide wheel 362. The baffles on both sides of this mechanism ensure that the raw material strip 100 is precisely centered before entering the core feeding area, preventing deviation and performing preliminary leveling during this process. Simultaneously, a metal induction sensor located behind the guiding mechanism monitors the strip status in real time, ensuring timely shutdown and alarm when the raw material is exhausted. Next, the raw material 100 is fed between the upper drive wheel 330 and the lower roller 340. The operator can precisely adjust the gap and clamping pressure between the roller 340 and the drive wheel 330 by rotating the adjusting bolt 350 with a pre-tension spring, which drives the second seat 312, rotatably connected to the first seat 311, to swing according to the actual thickness of the raw material 100, thereby achieving optimal feeding effect. The drive wheel 330, driven by the third drive component 320, begins to rotate intermittently and stepwise according to a preset program. The precision embossing on its outer surface provides strong and slip-free friction to ensure highly accurate feeding lengths each time, while also imprinting a slightly uneven structure on the upper surface of the raw material 100. This structure significantly increases friction when the finished product is assembled onto the fan blades, effectively preventing the balance plate 120 from falling off due to vibration or centrifugal force. During clamping and conveying, the raw material 100 strip, which originally had curl memory, is effectively straightened by the pressure of the drive wheel 330 and roller 340, laying a flat foundation for subsequent precise forming.

[0070] The straightened and embossed strip of raw material 100 is precisely fed into the forming device 400, lying flat at the starting position of the shaping groove 460 at the upper end of the lower die 410. After the feeding action pauses, the upper die 420 and the cutter 430 are driven synchronously downward by the first drive component 440. The shaping block 470 at the lower end of the upper die 420 presses into the shaping groove 460 of the lower die 410, performing the first stamping deformation on the raw material 100 located in the shaping cavity 450. Since the inclination of the groove wall of the shaping groove 460 gradually increases from left to right, the initial stamping only forms a shallow V-shape. Subsequently, the upper die 420 rises, and the feeding device 300 restarts, conveying the raw material 100 strip to the right by one step distance. At this time, the part that was stamped in the first step moves to an area with a larger inclination, while the new, straight raw material 100 enters the starting area. The upper die 420 descends again to perform a second stamping on the raw material 100 strip. This process is repeated continuously. Any segment of the raw material 100 strip is subjected to multiple, gradual pressure forming processes as it passes through the forming device 400 from left to right. The depth and angle of its V-shaped indentation are gradually and gently increased, effectively avoiding quality problems such as material tearing, excessive stretching, or springback that may occur due to a single large deformation process. This ensures a high degree of consistency in the shape of the transition blank 110. When the rightmost end of a segment of raw material 100 is fully formed and sent out of the shaping groove 460, the upper die 420 is driven downward by the first driving component 440 for stamping. Simultaneously, the cutting blade 430, which moves synchronously with it, reaches its working position and precisely cuts off the fully formed V-shaped raw material 100 to form an independent transition blank 110.

[0071] The cut transition blank 110 is pressed directly onto the floating fixed mold 520 of the pressing device 500 below by a retractable clamping structure extending downward from inside the cutter 430, with precise pressure and positioning, preventing the transition blank 110 from shifting during its descent. This floating fixed mold 520 and the moving mold 510 together form a receiving groove 530, ensuring that the transition blank 110 is stably received and positioned in the correct posture each time. The retractable clamping structure can be a cylinder or a push rod motor, etc. After the transition blank 110 is positioned, the second drive component 540, driven by the drive cylinder 543, immediately actuates. The extension and retraction of the cylinder, through a linkage mechanism composed of the swing arm 542 and the rotating shaft 544, efficiently converts linear motion into rotational motion of the moving mold 510. The moving mold 510 rapidly rotates forward, its working surface pressing against the rear bend 112 of the transition blank 110, causing it to move towards the front bend 111 and ultimately be forcefully flattened. This process completes the final shaping of the transition preform 110, transforming it from a V-shape into a U-shaped balance plate 120 with a specific opening width and sufficient clamping force.

[0072] After the balance plate 120 is formed in the pressing device 500, the transfer device 600 is activated. The slide 620, driven by the fourth drive component 650, slides quickly and smoothly from the standby position to the left along the slide rail 610 to directly above the pressing device 500. Immediately afterwards, the rotary motor 630 mounted on the slide 620 rotates, causing the clamping cylinder 640 fixed at its front end to rotate downward to a preset angle, so that its grippers accurately grip the balance plate 120 located in the receiving groove 530. Subsequently, the clamping cylinder 640 is vented and actuated, the grippers close, and the balance plate 120 is firmly clamped. After successful gripping, the rotary motor 630 rotates in the opposite direction, bringing the clamping cylinder 640 back to its initial horizontal position. At the same time, the second drive component 540 controls the moving mold 510 to reset, preparing to receive the next transition blank 110. Finally, the fourth drive component 650 drives the slide 620 to move to the right to a designated position, such as above the finished product collection box. The clamping cylinder 640 releases pressure, the grippers open, and the balance plate 120 is put into the collection box.

[0073] Throughout the entire process, all steps, including feeding, forming, cutting, pressing, and transferring, are coordinated and executed automatically by the central control system. The precise matching of the action rhythms of each device, working in a continuous cycle, enables fully automated production from 100 rolls of raw material to 120 qualified balance plates. This greatly improves production efficiency and product quality stability, and completely eliminates the labor intensity and safety risks associated with manual operation.

[0074] In this specification, the reference to the term "some embodiments" means 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.

[0075] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An automatic plate-making machine for a cross-flow impeller balance plate, characterized in that, include: The feeding device (200), the material feeding device (300), the forming device (400), the pressing device (500), and the material transfer device (600) are included. The feeding device (200) is used to store the rolled raw material (100); The feeding device (300) is used to straighten the raw material (100) of the discharging device (200) and transport the raw material (100) to the right to the forming device (400); The molding device (400) includes a lower mold (410), an upper mold (420), a cutter (430), and a first driving component (440) for driving the upper mold (420) and the cutter (430) to move synchronously. When the lower mold (410) and the upper mold (420) are closed, a shaping cavity (450) is formed, and the raw material (100) located in the shaping cavity (450) is deformed. When the lower mold (410) and the upper mold (420) are closed, the cutter (430) cuts off the part of the raw material (100) that has separated from the shaping cavity (450) and has been deformed to form a transition blank (110). The pressing device (500) includes a moving mold (510), a fixed mold (520), and a second driving component (540) for driving the moving mold (510) to rotate. The moving mold (510) and the fixed mold (520) receive and support the transition blank (110). The second driving component (540) can drive the moving mold (510) to rotate so that the moving mold (510) and the fixed mold (520) move closer to each other to clamp the transition blank (110) so that the transition blank (110) is formed into a balance plate (120). The material transfer device (600) is used to remove the balance plate (120) located in the pressing device (500).

2. The automatic plate-making machine for cross-flow impeller balance plates according to claim 1, characterized in that, The feeding device (200) includes a fixed base (210), a fixed shaft (220), a stop block (230), a first stop disc (241), and a second stop disc (242). The fixed shaft (220) is fixedly installed on the fixed base (210). The first stop disc (241) is located behind the second stop disc (242). The first stop disc (241) is fixedly connected to the rear end of the fixed shaft (220). The second stop disc (242) is... 242) The rolled raw material (100) is sleeved on the fixed shaft (220) and located between the first stop disc (241) and the second stop disc (242). The stop block (230) is threaded to the fixed shaft (220) and located in front of the second stop disc (242). The stop block (230) is used to prevent the second stop disc (242) from moving forward away from the fixed shaft (220).

3. The automatic plate-making machine for cross-flow impeller balance plates according to claim 2, characterized in that, The feeding device (200) further includes a roller (250), which is sleeved on the fixed shaft (220). The roller (250) is located between the first stop disc (241) and the second stop disc (242), and the rolled raw material (100) is sleeved on the roller (250).

4. The automatic plate-making machine for cross-flow impeller balance plates according to claim 1, characterized in that, The feeding device (300) includes a base (310), a third driving component (320), a driving wheel (330), and a roller (340). The driving wheel (330) and the roller (340) are rotatably connected to the base (310). The driving wheel (330) and the roller (340) together clamp and straighten the raw material (100). The third driving component (320) can drive the driving wheel (330) to rotate so that the raw material (100) enters the forming device (400) from left to right.

5. The automatic plate-making machine for cross-flow impeller balance plates according to claim 4, characterized in that, The base (310) includes a first seat (311) and a second seat (312). The third driving component (320) is mounted on the first seat (311). The driving wheel (330) is rotatably connected to the first seat (311). The roller (340) is rotatably connected to the second seat (312). The second seat (312) is rotatably connected to the first seat (311). The feeding device (300) also includes an adjusting bolt (350), a first guide wheel (361), and a second guide wheel (362). The adjusting bolt (350) passes through and is rotatably connected to the first seat (311). The lower end of the bolt (350) is threadedly connected to the second seat (312); the rotation of the adjusting bolt (350) can cause the second seat (312) to swing relative to the first seat (311), so that the roller (340) moves closer to or away from the drive wheel (330). The first guide wheel (361) and the second guide wheel (362) are both rotatably connected to the first seat (311). The first guide wheel (361) is located above the second guide wheel (362). The first guide wheel (361) and the second guide wheel (362) work together to guide the raw material (100) to move from left to right.

6. The automatic plate-making machine for cross-flow impeller balance plates according to claim 4, characterized in that, The outer peripheral surface of the drive wheel (330) is provided with embossing; when the drive wheel (330) presses and transports the raw material (100), the embossing is imprinted on the upper surface of the raw material (100).

7. The automatic plate-making machine for cross-flow impeller balance plates according to claim 5, characterized in that, The upper end face of the lower mold (410) is provided with a shaping groove (460), and the lower end face of the upper mold (420) is provided with a shaping block (470). The shaping groove (460) extends from left to right, and the projection of the shaping groove (460) along the cross-section perpendicular to the left and right direction is V-shaped. The inclination of the groove wall of the shaping groove (460) gradually increases from left to right. When the upper mold (420) and the lower mold (410) are closed, the shaping block (470) is inserted downward into the shaping groove (460), and the area between the shaping block (470) and the shaping groove (460) forms the shaping cavity (450).

8. The automatic plate-making machine for cross-flow impeller balance plates according to claim 7, characterized in that, The moving mold (510) and the fixed mold (520) together form a receiving groove (530). The transition blank (110) is placed in the receiving groove (530). The transition blank (110) includes a front bending part (111) and a rear bending part (112). The lower end of the front bending part (111) is connected to the lower end of the rear bending part (112). The right end of the shaping groove (460) is connected to the left end of the receiving groove (530). The moving mold (510) is located behind the fixed mold (520). When the moving mold (510) rotates forward, it can drive the rear bending part (112) of the transition blank (110) to bend forward and approach the front bending part (111) of the transition blank (110) so that the transition blank (110) forms the balance plate (120).

9. The automatic plate-making machine for cross-flow impeller balance plates according to claim 8, characterized in that, The material transfer device (600) includes a slide rail (610), a slide block (620), a fourth drive component (650), a rotary motor (630), and a clamping cylinder (640). The slide block (620) is slidably connected to the slide rail (610) in the left-right direction. The fourth drive component (650) is used to drive the slide block (620) to slide in the left-right direction. The rotary motor (630) is mounted on the slide block (620). The drive end of the rotary motor (630) is fixedly connected to the clamping cylinder (640). The rotary motor (630) can drive the clamping cylinder (640) to rotate closer to or away from the receiving trough (530). The clamping cylinder (640) is used to clamp the balance plate (120) located in the receiving trough (530).

10. The automatic plate-making machine for cross-flow impeller balance plates according to claim 1, characterized in that, The second driving component (540) includes a mounting base (541), a swing arm (542), and a driving cylinder (543). A rotating shaft (544) is rotatably connected inside the mounting base (541). The right end of the moving mold (510) is fixedly connected to the rotating shaft (544). One end of the swing arm (542) is fixedly connected to the rotating shaft (544). The driving end of the driving cylinder (543) is hinged to the other end of the swing arm (542).

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