Blade punch forming die

Abstract

The embodiment of the invention discloses a blade punch forming die which comprises an upper die plate and a lower die plate, a female die capable of being matched with a male die is installed on the lower die plate, a notch is formed in the female die, one end and the two side walls of the notch incline upwards to form slope surfaces, and the upper die plate and the lower die plate are arranged on the slope surfaces. One end of the bottom of the notch smoothly inclines upwards towards the other end until the notch is flush with the surface of the female die; the die further comprises a crowbar and a three-axis air cylinder, the three-axis air cylinder is fixedly installed on the surface of the lower die plate, one end of the three-axis air cylinder is fixedly connected with the crowbar through a connecting rod, and one end of the crowbar is aligned with one end of the notch. One end and the two side walls of the notch incline upwards to form the slope surfaces, one end of the bottom of the notch inclines upwards smoothly towards the other end till the bottom of the notch is flush with the surface of the female die, and through the design, the unmanned aerial vehicle blade is prone to prizing and disengaging after being formed in the female die; and under the ejection of the three-axis air cylinder, direct separation can be achieved, automation is achieved, and great convenience is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned aerial vehicle blade production, and in particular to a blade stamping mold. Background Art

[0002] A drone is an unmanned aircraft controlled by a radio remote control device and a self-contained program control device. Drones are actually a general term for unmanned aerial vehicles. From a technical point of view, they can be divided into several categories: unmanned helicopters, unmanned fixed-wing aircraft, unmanned multi-rotor aircraft, unmanned airships, and unmanned paragliders. Drones are also widely used, usually for military purposes, agricultural applications (spraying, monitoring pests and diseases, etc.), aerial photography and film and television production, logistics and distribution, security and patrols, power inspections, environmental monitoring and protection, entertainment, disaster relief, observing wildlife, weather forecasting, etc. For an increasingly developed modern society, drones are widely used.

[0003] In multi-rotor drones, the common number of blades is two or four, and this design is intended to balance efficiency, noise and manufacturing costs. Each blade consists of a hub cap (the center part) and the blade itself, and the shape and inclination of the blade directly affect the lift efficiency and stability of the propeller.

[0004] When the drone blades are stamped, the blades are twisted and deformed at a large angle, deformed violently, and stuck tightly between the lower mold after deformation, making them difficult to come out. The existing powerful stripping structure makes the mold more complicated and prone to indentations and surface scratches. Therefore, we propose a blade stamping mold. Summary of the invention

[0005] In view of this, the present invention provides a blade stamping mold, which is used to solve the problem in the prior art that the UAV blades are difficult to come out after being formed in the lower mold.

[0006] A blade stamping mold, comprising an upper mold plate and a lower mold plate, wherein a convex mold is installed at the bottom of the upper mold plate; a concave mold capable of cooperating with the convex mold is installed on the lower mold plate, and a notch for forming a drone blade is provided on the concave mold, one end of the notch and side walls on both sides are inclined upward to form a slope, and one end of the bottom of the notch is smoothly inclined upward toward the other end until it is flush with the surface of the concave mold; It also includes a crowbar and a three-axis cylinder, wherein the three-axis cylinder is fixedly installed on the surface of the lower template, one end of the three-axis cylinder is fixedly connected to the crowbar through a connecting rod, and one end of the crowbar is aligned with one end of the recess.

[0007] Preferably, one end of the crowbar is configured as a U-shaped head, one end of the U-shaped head is configured as a flat inclined surface, a jet head A is fixedly installed at the U-shaped center of the U-shaped head, an air passage connected to the jet head A is provided inside the crowbar, and the air passage is connected to a soft air pipe.

[0008] Preferably, a nozzle B is installed on the upper part of one end of the crowbar, and the nozzle B is also connected to the soft air pipe through an air channel. The soft air pipe is connected to a gas solenoid valve, and the nozzle B is provided with an inclined flat air outlet.

[0009] Preferably, a vibration motor is also installed on the above-mentioned crowbar.

[0010] Preferably, the above also includes a single-chip microcomputer controller, and the three-axis cylinder, air solenoid valve and vibration motor are all controlled by the single-chip microcomputer controller, wherein, when in use, the punching machine is also electrically connected to the single-chip microcomputer controller, and the punching action of the punching machine is controlled by the single-chip microcomputer controller.

[0011] Preferably, a limit block is fixedly installed on the above-mentioned lower template, the limit block is arranged in front of one end of the three-axis cylinder, and a proximity sensor is embedded on the side opposite to the limit block and one end of the three-axis cylinder, and the signal output end of the proximity sensor is connected to the signal input end of the single-chip controller.

[0012] Preferably, the above also includes an oil injection mechanism, which includes an electric oil injector and a switch magnetic base, the switch magnetic base is fixed to the surface of the lower template by magnetic attraction, a rotary cylinder is fixedly installed on the top of the switch magnetic base, one end of the rotating shaft of the rotary cylinder is fixedly connected to a hard oil injection pipe, one end of the oil injection pipe is installed with an oil injection head, the oil outlet of the electric oil injector is connected to one end of the oil injection pipe through a hose, and the electric oil injector and the rotary cylinder are respectively controlled by a single-chip microcomputer controller.

[0013] Preferably, two L-shaped hooks are fixedly connected to one side of the electric fuel injector, and two grooves are provided on one end of the top surface of the lower template, and the two L-shaped hooks can be inserted into the two grooves.

[0014] Preferably, the electric fuel injector comprises an oil storage box, an oil pump is mounted on the oil storage box, an outlet of the oil pump is connected to one end of the hose, and a supply port is provided at the top of one end of the oil storage box.

[0015] The present invention also provides a UAV blade stamping forming process, which uses the blade stamping forming die described above and specifically includes the following steps: S1. Install the blade stamping die, connect the circuit system, and set the working pressure range of the three-axis cylinder to 0.25Mpa-0.40Mpa; S2, set a one-key start stamping button and connect it to the single-chip controller; S3, prepare the blank, and place the blank in the notch of the die; S4, press the one-button start punching button, and the microcontroller controller automatically executes the following steps; S5, the electric oil injector is started, and the volatile punching and shearing oil is sprayed onto the upper surface of the sheet in the notch for lubrication; then, the rotary cylinder is started and rotated 90°, so that the oil injection pipe is moved out from just above the die; S6, the punching machine starts punching downward to complete the punching; S7. After the stamping is completed, the rotary cylinder rotates back to the top of the notch, and then the electric injector starts to spray punching and shearing oil to cool and lubricate the stamped sheet; S8, the air solenoid valve is opened, the vibration motor is started, and then the three-axis cylinder extends forward, and under the action of air flow impact and vibration, the stamped sheet is ejected; S9. If the three-axis cylinder cannot eject the blank in one extension and is blocked, the proximity sensor cannot receive the sensing signal, that is, one end of the three-axis cylinder has not reached the position of the limit block; at this time, the single-chip microcomputer controller controls the three-axis cylinder to retract and then eject it again to try to eject the blank. Multiple attempts can increase the success rate of ejecting the blank.

[0016] Implementing the embodiments of the present invention will have the following beneficial effects: The above blade stamping die is adopted; Among them, one end of the notch and the side walls on both sides are inclined upward to form a slope, and one end of the bottom of the notch is smoothly inclined upward to the other end until it is flush with the surface of the die. With this design, the drone blade can be easily pried out after being formed in the die, and it is not easy to have indentations and scratches, and the mold structure is simple; And under the top pressure of the three-axis cylinder, it can also be directly disengaged, realizing automation, which is very convenient; At the same time, the jet head A and the jet head B are arranged on the crowbar to use airflow to blow. On the one hand, the surface of the stamped sheet is blown to accelerate the heat dissipation. On the other hand, the airflow is used to quickly blow the gap between the sheet and the die, which is convenient for heat dissipation in the die. At the same time, the impact of the airflow makes it easy for the stamped sheet to be released. At the same time, the airflow passing through the sheet with the curved surface after forming is also easy to cause the air pressure on both sides of the sheet to be unbalanced. After the air pressure provides part of the lift, it is easy for the sheet to be released. A vibration motor is installed on the crowbar. When the U-shaped head hits the blank, the vibration motor can transmit vibration energy to the blank, so that the blank can be loosened. The oil injection mechanism can play the role of lubrication, heat dissipation and auxiliary sheet loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] in: Figure 1 A schematic diagram of the structure of a blade stamping die in one embodiment; Figure 2 A schematic diagram of the structure of a lower template in an embodiment; Figure 3 is a schematic diagram of the structure of a crowbar in one embodiment; Figure 4 A schematic diagram of the structure of a concave mold in one embodiment; Figure 5 This is a schematic diagram of the structure of one end of the spray head B in one embodiment; Figure 6 It is a structural schematic diagram of assembling the oil injection mechanism on the lower template in one embodiment; Figure 7 Schematic diagram of the structure of the fuel injection mechanism in one embodiment.

[0019] Reference numerals: 100, upper mold plate; 101, punch; 200, lower mold plate; 201, groove; 300, die; 301, notch; 302, slope; 400, three-axis cylinder; 401, connecting rod; 500, limit block; 501, proximity sensor; 600, crowbar; 601, U-shaped head; 602, inclined plane; 603, nozzle A; 604, nozzle B; 605, soft air tube; 606, vibration motor; 607, gas solenoid valve; 608, flat air outlet; 700, fuel injection mechanism; 701, switch magnetic base; 702, rotary cylinder; 703, fuel injection pipe; 704, fuel injection head; 800, electric fuel injector; 801, oil storage box; 802, supply port; 803, L-shaped hook; 804, hose; 805, oil pump. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0023] Embodiment 1 See also Figure 1-7 A blade stamping mold comprises an upper mold plate 100 and a lower mold plate 200, wherein a punch 101 is installed at the bottom of the upper mold plate 100; a die 300 capable of cooperating with the punch 101 is installed on the lower mold plate 200, and a notch 301 for forming a drone blade is provided on the die 300, and one end of the notch 301 and the side walls on both sides are inclined upward to form a slope 302, wherein the angle between the slope 302 and the vertical direction is set at 5°-30°; and one end of the bottom of the notch 301 is smoothly inclined upward toward the other end until it is flush with the surface of the die 300; It also includes a crowbar 600 and a three-axis cylinder 400. The three-axis cylinder 400 is fixedly installed on the surface of the lower template 200. One end of the three-axis cylinder 400 is fixedly connected to the crowbar 600 through a connecting rod 401. One end of the crowbar 600 is aligned with one end of the recess 301.

[0024] Specifically, one end of the crowbar 600 is set as a U-shaped head 601, and one end of the U-shaped head 601 is set as a flat inclined surface 602. A nozzle A603 is fixedly installed at the U-shaped center of the U-shaped head 601. An air passage connected to the nozzle A603 is set inside the crowbar 600, and the air passage is connected to a soft air tube 605.

[0025] The jet direction of the jet head A603 is mainly between the bottom of the sheet and the bottom gap of the notch 301, so that under the action of blowing, the airflow will fill the notch 301 after entering, which is convenient for the sheet to be loosened after pressure molding; During implementation, a nozzle B604 is installed on the upper part of one end of the crowbar 600, and the nozzle B604 is also connected to the soft air pipe 605 through the air channel. The soft air pipe 605 is connected to a gas solenoid valve 607, and an inclined flat air outlet 608 is provided on the nozzle B604.

[0026] The jet direction of the jet head B604 is mainly the top surface of the sheet, and is parallel to the curved surface of the sheet. On the one hand, it blows on the upper surface of the sheet to dissipate heat, and on the other hand, the rapid airflow can cause negative pressure. The atmospheric pressure below the sheet is greater than the atmospheric pressure above, which can provide a lift for the sheet to facilitate material removal. It should be noted that the speed of the airflow ejected by the jet head B604 needs to be greater than the speed of the airflow ejected by the jet head A603. Therefore, the design of the flat air outlet 608 is very necessary. On the one hand, it is necessary to keep the area as large as possible parallel to the upper surface of the pressurized blade, and on the other hand, it is necessary to increase the blowing speed of the airflow.

[0027] During the implementation, the crowbar 600 is also equipped with a vibration motor 606. The design of the vibration motor 606 is the icing on the cake. When the object is stuck tightly, the effect of loosening the object through vibration is very good.

[0028] It should be noted that a single-chip microcomputer controller (not shown) is also included, and the three-axis cylinder 400, the gas solenoid valve 607 and the vibration motor 606 are all controlled by the single-chip microcomputer controller. When in use, the punching machine is also electrically connected to the single-chip microcomputer controller, and the punching action of the punching machine is controlled by the single-chip microcomputer controller. The design of the single-chip microcomputer controller can facilitate the realization of a series of automated operations.

[0029] During implementation, a limit block 500 is fixedly installed on the lower template 200, and the limit block 500 is arranged in front of one end of the three-axis cylinder 400, and a proximity sensor 501 is embedded on the side of the limit block 500 opposite to one end of the three-axis cylinder 400, and the signal output end of the proximity sensor 501 is connected to the signal input end of the single-chip controller. The proximity sensor 501 can detect the position of one end of the three-axis cylinder 400, and can confirm whether the three-axis cylinder 400 completes the ejection work normally.

[0030] During implementation, it also includes an injection mechanism 700, which includes an electric fuel injector 800 and a switch magnetic seat 701. The switch magnetic seat 701 is fixed on the surface of the lower template 200 by magnetic attraction. A rotary cylinder 702 is fixedly installed on the top of the switch magnetic seat 701. A hard fuel injection pipe 703 is fixedly connected to one end of the rotating shaft of the rotary cylinder 702. A fuel injection head 704 is installed on one end of the fuel injection pipe 703. The oil outlet of the electric fuel injector 800 is connected to one end of the fuel injection pipe 703 through a hose 804. The electric fuel injector 800 and the rotary cylinder 702 are respectively controlled by a single-chip microcomputer controller. The electric fuel injector 800 includes an oil storage box 801, an oil pump 805 is installed on the oil storage box 801, the outlet of the oil pump 805 is connected to one end of the hose 804, and a supply port 802 is opened on the top of one end of the oil storage box 801. Among them, the electric fuel injector 800 is a prior art.

[0031] Among them, two L-shaped hooks 803 are fixedly connected to one side of the electric fuel injector 800, and two grooves 201 are provided on one end of the top surface of the lower template 200, and the two L-shaped hooks 803 can be inserted into the two grooves 201. With this design, the electric fuel injector 800 can be directly placed on one side of the lower template 200, which is very convenient.

[0032] Embodiment 2 Different from the first embodiment, this embodiment discloses a UAV blade stamping process, wherein the blade stamping mold mentioned in the first embodiment is used, and specifically includes the following steps: S1. Install the blade stamping die, connect the circuit system, and set the working pressure range of the three-axis cylinder 400 to 0.25Mpa-0.40Mpa; S2, set a one-key start stamping button and connect it to the single-chip controller; S3, prepare a sheet, and place the sheet in the notch 301 of the concave mold 300; S4, press the one-button start punching button, and the microcontroller controller automatically executes the following steps; S5, the electric oil injector 800 is started, and the volatile punching oil is sprayed onto the upper surface of the sheet in the notch 301 for lubrication; then, the rotary cylinder 702 is started and rotated 90°, so that the oil injection pipe 703 is moved out of the top of the die 300; S6, the punching machine starts punching downward to complete the punching; S7, after the stamping is completed, the rotary cylinder 702 rotates to the top of the notch 301, and then the electric injector 800 starts to spray the punching and shearing oil to cool and lubricate the stamped sheet; S8, the air solenoid valve 607 is opened, the vibration motor 606 is started, and then the three-axis cylinder 400 extends forward, and under the action of air flow impact and vibration, the stamped sheet is ejected; S9. If the three-axis cylinder 400 cannot eject the sheet by extending once and is blocked, the proximity sensor 501 cannot receive the sensing signal, that is, one end of the three-axis cylinder 400 has not reached the position of the limit block 500; at this time, the single-chip microcomputer controller controls the three-axis cylinder 400 to retract and then eject it again to try to eject the sheet. Multiple attempts can increase the success rate of ejecting the sheet.

[0033] The above steps are only the preliminary forming process of the UAV blade stamping. In the subsequent production, it also includes processes such as trimming, finishing and drilling. The idea of ​​the blade stamping mold in Example 1 can also be applied to the finishing mold to facilitate material removal.

[0034] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A blade stamping die, characterized in that: include: An upper mold plate (100), wherein a convex mold (101) is installed at the bottom of the upper mold plate (100); A lower mold plate (200), wherein a concave mold (300) capable of cooperating with the convex mold (101) is mounted on the lower mold plate (200), and a notch (301) for forming a drone blade is provided on the concave mold (300), one end of the notch (301) and side walls on both sides are inclined upward to form a slope (302), and one end of the bottom of the notch (301) is smoothly inclined upward toward the other end until it is flush with the surface of the concave mold (300); It also includes a crowbar (600) and a three-axis cylinder (400), wherein the three-axis cylinder (400) is fixedly mounted on the surface of the lower template (200), one end of the three-axis cylinder (400) is fixedly connected to the crowbar (600) via a connecting rod (401), and one end of the crowbar (600) is aligned with one end of the notch (301).

2. The blade stamping die according to claim 1, characterized in that: One end of the crowbar (600) is configured as a U-shaped head (601), one end of the U-shaped head (601) is configured as a flat inclined surface (602), a nozzle A (603) is fixedly installed at the center of the U-shape of the U-shaped head (601), an air passage connected to the nozzle A (603) is provided inside the crowbar (600), and the air passage is connected to a soft air tube (605).

3. The blade stamping die according to claim 2, characterized in that: A spray head B (604) is installed on the upper part of one end of the crowbar (600). The spray head B (604) is also connected to a soft air pipe (605) through an air passage. The soft air pipe (605) is connected to a gas solenoid valve (607). The spray head B (604) is provided with an inclined flat air outlet (608).

4. The blade stamping die according to claim 3, characterized in that: The crowbar (600) is also equipped with a vibration motor (606).

5. The blade stamping die according to claim 4, characterized in that: It also includes a single-chip microcomputer controller, and the three-axis cylinder (400), the gas solenoid valve (607) and the vibration motor (606) are all controlled by the single-chip microcomputer controller. When in use, the punching machine is also electrically connected to the single-chip microcomputer controller, and the punching action of the punching machine is controlled by the single-chip microcomputer controller.

6. The blade stamping die according to claim 5, characterized in that: A limit block (500) is fixedly mounted on the lower template (200), the limit block (500) being arranged in front of one end of the three-axis cylinder (400), and a proximity sensor (501) is embedded on the side of the limit block (500) opposite to one end of the three-axis cylinder (400), the signal output end of the proximity sensor (501) being connected to the signal input end of the single-chip controller.

7. The blade stamping die according to claim 6, characterized in that: The invention also comprises an oil injection mechanism (700), wherein the oil injection mechanism (700) comprises an electric oil injector (800) and a switch magnetic base (701), wherein the switch magnetic base (701) is fixed to the surface of the lower mold plate (200) by magnetic attraction, a rotary cylinder (702) is fixedly mounted on the top of the switch magnetic base (701), a hard oil injection pipe (703) is fixedly connected to one end of the rotating shaft of the rotary cylinder (702), an oil injection head (704) is mounted on one end of the oil injection pipe (703), an oil outlet of the electric oil injector (800) is connected to one end of the oil injection pipe (703) via a hose (804), and the electric oil injector (800) and the rotary cylinder (702) are respectively controlled by a single chip microcomputer controller.

8. The blade stamping die according to claim 7, characterized in that: Two L-shaped hooks (803) are fixedly connected to one side of the electric fuel injector (800), and two grooves (201) are provided on one end of the top surface of the lower template (200), and the two L-shaped hooks (803) can be inserted into the two grooves (201).

9. The blade stamping die according to claim 8, characterized in that: The electric fuel injector (800) comprises an oil storage box (801), an oil pump (805) is installed on the oil storage box (801), the outlet of the oil pump (805) is connected to one end of the hose (804), and a supply port (802) is opened at the top of one end of the oil storage box (801).

10. A stamping process for drone blades, characterized in that: The blade stamping die according to claim 9 is used, and specifically comprises the following steps: S1. Install the blade stamping die, connect the circuit system, and set the working pressure range of the three-axis cylinder (400) to 0.25Mpa-0.40Mpa; S2, set a one-key start stamping button and connect it to the single-chip controller; S3, preparing a sheet, and placing the sheet in the notch (301) of the concave mold (300); S4, press the one-button start punching button, and the microcontroller controller automatically executes the following steps; S5, the electric oil injector (800) is started and the volatile punching oil is sprayed onto the upper surface of the sheet in the recess (301) for lubrication; then, the rotary cylinder (702) is started and rotated 90 degrees so that the oil injection pipe (703) is moved out of the upper part of the concave die (300); S6, the punching machine starts punching downward to complete the punching; S7, after the stamping is completed, the rotary cylinder (702) is rotated to the top of the notch (301), and then the electric oil injector (800) starts to spray the punching and shearing oil to cool and lubricate the stamped sheet; S8, the air solenoid valve (607) is opened, the vibration motor (606) is started, and then the three-axis cylinder (400) extends forward, and under the action of air flow impact and vibration, the stamped sheet is ejected; S9. If the three-axis cylinder (400) cannot eject the sheet after one extension and is blocked, the proximity sensor (501) cannot receive the sensing signal, that is, one end of the three-axis cylinder (400) has not reached the position of the limit block (500); at this time, the single-chip microcomputer controller controls the three-axis cylinder (400) to retract and then eject the sheet again, and attempts to eject the sheet. Multiple attempts can increase the success rate of ejecting the sheet.

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