A reliable fork sorting mechanism

Abstract

The present invention discloses a reliable fork sorting mechanism, including a fork and a driving mechanism, wherein the driving mechanism is a motor fixed on a sorting fork; the present invention discloses another driving mechanism - an electromagnet. The present invention replaces the original redundant cylinder gas path structure with a stepper motor to drive the fork, which is convenient for later maintenance and overhaul, and the motor is the main power for sorting, which ensures a faster sorting speed and higher sorting efficiency while ensuring complete functions, and can better adapt to new market demands; the present invention replaces the original redundant cylinder gas path structure with an electromagnet, and drives the fork to rotate by attracting the ferromagnetic block through the electromagnet, without the need to set up an additional judgment mechanism for the fork to rotate in place, and the present invention uses the fork rotation to drive the coil to cut the magnetic flux lines to generate electricity and store it in the battery, which can save electricity.

Description

Technical Field

[0001] The invention relates to a reliable fork sorting mechanism, belonging to the technical field of logistics sorting equipment. Background Art

[0002] The existing logistics sorting fork is driven by a cylinder. The cylinder as a power source for goods sorting has the following disadvantages:

[0003] 1. Not suitable for cold areas, prone to freezing or insufficient power. The cylinder may not move properly due to the compressibility of gas, thus causing sorting accidents;

[0004] 2. The cylinder action response speed is slow, which makes it impossible to increase the main line speed of logistics sorting, limiting the efficiency of logistics sorting;

[0005] 3. The installation and maintenance costs of the cylinder are high. It requires the installation of air source and air line, requires more accessories, and will also bring a lot of workload for later maintenance.

[0006] Therefore, if Figure 1-Figure 4 As shown, a fork sorting structure driven by a motor has appeared in the prior art.

[0007] Although the above structure solves the above problems, the open-loop motor in the above structure cannot judge whether the rotation is in place by itself, and needs to rely on the code disk and photoelectric sensor for judgment, and needs to be powered on all the time, resulting in a waste of electric energy. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a reliable fork sorting mechanism to solve the problems existing in the above-mentioned prior art.

[0009] The technical solution adopted by the present invention is: a reliable fork sorting mechanism, characterized in that it includes a fork and a driving mechanism, and the fork reciprocates under the drive of the driving mechanism.

[0010] Preferably, the driving mechanism comprises an electromagnet, which is arranged at one end of the free end of the shift fork at the extreme position of movement; a ferromagnetic block is fixed to the free end of the shift fork; and the electromagnet drives the shift fork to reciprocate.

[0011] Preferably, another electromagnet is further included, and the two electromagnets are respectively arranged at two ends of the extreme positions of the movement of the free end of the fork.

[0012] Preferably, the electromagnet and the ferromagnetic block are connected via a spring.

[0013] Preferably, an arc-shaped fixed plate is provided on the sorting branch, an arc-shaped slide groove is opened on the fixed plate, the ferromagnetic block is spherical, the ferromagnetic block is stuck in the slide groove and can slide along the slide groove; a conductive coating is provided in the middle part of the bottom surface of the slide groove, and insulating coatings are provided at both ends of the bottom surface of the slide groove; when the ferromagnetic block contacts the conductive coating, the electromagnet is energized, and when the ferromagnetic block contacts the insulating coating, the electromagnet is de-energized; a permanent magnet I is fixed at each end of the arc-shaped slide groove.

[0014] Preferably, the electromagnet is electrically connected to a power supply, a switch and a time relay through a controller and are connected in series with each other. After the controller controls the power supply to supply power to the electromagnet so that the electromagnet is energized for a period of time, the time relay controls the power supply to form an open circuit with the electromagnet; the electromagnet, the ferromagnetic block, the bottom surface of the slide groove and the spring are electrically connected to another power supply and are connected in series with each other. When the ferromagnetic block contacts the conductive coating, the another power supply supplies power to the electromagnet so that the electromagnet is energized. When the ferromagnetic block contacts the insulating coating, an open circuit is formed between the another power supply and the electromagnet.

[0015] Preferably, a permanent magnet II and a permanent magnet III are fixed on the fixed plate, the permanent magnet II and the permanent magnet III are arranged opposite to each other and have opposite magnetic poles, and a coil is fixedly connected to one end of the ferromagnetic block away from the rotation center of the shift fork through a connecting rod, and the shift fork drives the coil to cut the magnetic flux lines between the permanent magnet II and the permanent magnet III during rotation; the coil is electrically connected to a storage battery

[0016] Beneficial effects of the present invention:

[0017] 1. Compared with the prior art, the present invention attracts the ferromagnetic block by the electromagnet to drive the shift fork to rotate. When the ferromagnetic block slides to one end of the slide slot, the shift fork stops rotating, and there is no need to set up an additional judgment mechanism for the shift fork to rotate into position. At the same time, through the cooperation of the ferromagnetic block and the insulating coating, when the shift fork rotates into position, the electromagnet is powered off, and the shift fork is limited by the permanent magnet I, saving electric energy.

[0018] 2. In particular, compared with the prior art, the present invention utilizes the rotation of the shift fork to drive the coil to cut the magnetic flux lines to generate electricity and stores it in the battery, thereby saving electric energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of a motor, a shift fork and a code disc in the prior art;

[0020] Figure 2 It is a schematic diagram of the structure of a motor and an eccentric wheel in the prior art;

[0021] Figure 3 It is a diagram of the matching structure of the pin and the shift fork in the prior art;

[0022] Figure 4 It is a schematic diagram of the overall structure in the prior art.

[0023] Figure 5 It is a top view of the overall structure of the present invention.

[0024] Figure 6 It is a control structure principle diagram of the electromagnet of the present invention. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Embodiment 1:

[0027] The existing fork sorting mechanism includes a fork 1 and a driving mechanism, wherein the driving mechanism is a motor 2. Figure 4 As shown, the motor 2 is installed on the sorting fork through the mounting plate 7. The motor 2 is a stepper motor 2. Figure 1 As shown, an eccentric wheel 3 is fixed on the output shaft of the motor 2. Figure 2 As shown, a pin 31 arranged vertically downward is fixed on the lower end surface of the eccentric wheel 3. Figure 3 As shown, the middle part of the fork 1 is provided with a through hole 11 whose axis is arranged in the vertical direction and cooperates with the pin 31. The through hole 11 is in the shape of a rounded rectangle. The pin 31 extends into the through hole 11 and can slide inside the through hole 11. Figure 1 As shown, the right end of the shift fork 1 is rotatably connected to the sorting fork.

[0028] The motor 2 drives the eccentric wheel 3 to reciprocate, and the pin 31 on the eccentric wheel 3 cooperates with the through hole 11 in the middle of the shift fork 1 to drive the shift fork 1 to reciprocate.

[0029] like Figure 4 As shown, it also includes a motor driver 6, which is installed on the part of the sorting branch road close to the motor 2, and the motor driver 6 is electrically connected to the motor 2 through the PLC.

[0030] Since the open-loop motor 2 is less stable and reliable than the closed-loop motor 2, the motor 2 in this embodiment is an open-loop motor 2. However, the open-loop motor 2 itself cannot provide feedback on whether the rotation is in place, that is, it cannot determine whether the shift fork 1 is rotated in place. Therefore, Figure 1As shown, the motor 2 is a double-shaft motor 2, a code disk 4 is coaxially fixed on the output shaft at the upper end of the motor 2, an arc-shaped notch is provided on the code disk 4, a photoelectric sensor 5 is fixed on the motor 2, the photoelectric sensor 5 includes a transmitting end and a receiving end, and the transmitting end and the receiving end of the photoelectric sensor 5 are respectively located above and below the code disk 4; during the rotation of the code disk 4, the arc-shaped notch can be aligned with the transmitting end and the receiving end of the photoelectric sensor 5.

[0031] During the rotation of the code disk 4, when one end of the arc-shaped notch is aligned with the photoelectric sensor 5, the receiving end of the photoelectric sensor 5 cannot receive the photoelectric signal emitted by the transmitting end, and the receiving end of the photoelectric sensor 5 sends a pulse signal to the motor driver 6 through the PLC, and the motor driver 6 converts the pulse signal into an angular displacement and drives the motor 2 to rotate in the forward direction; during this process, the receiving end of the photoelectric sensor 5 will continue to receive the photoelectric signal emitted by the transmitting end, and the photoelectric sensor 5 will continue to be inactive; when the other end of the arc-shaped notch is aligned with the photoelectric sensor 5, the receiving end of the photoelectric sensor 5 receives the photoelectric signal emitted by the transmitting end again, and the receiving end of the photoelectric sensor 5 sends a reverse pulse signal to the motor driver 6 through the PLC, and the motor driver 6 converts the reverse pulse signal into a reverse angular displacement and drives the motor 2 to rotate in the reverse direction; repeating continuously, thereby realizing the fixed-angle reciprocating rotation of the motor 2.

[0032] A reliable fork sorting mechanism, which is different from the existing fork sorting structure in that the driving mechanism of the fork 1 is different: Figure 5 As shown, the right end of the fork 1 is rotatably connected to the sorting fork through the rotating rod 12, and an arc-shaped fixed plate 8 is arranged directly below the left end of the fork 1, and the fixed plate 8 is fixed on the sorting fork. An arc-shaped slide groove is opened at the upper end of the fixed plate 8, and a conductive coating 81 is arranged in the middle part of the bottom surface of the slide groove, and insulating coatings 82 are arranged at both ends of the bottom surface of the slide groove. A permanent magnet Ⅰ 83 is fixed to each of the two ends of the arc-shaped slide groove, and an electromagnet 84 is fixed to each of the left and right ends of the permanent magnet Ⅰ 83. The left end of the fork 1 is a free end, and a ferromagnetic block is fixed to the lower end of the free end of the fork 1, and the ferromagnetic block is a ferromagnetic ball 13. The ferromagnetic block is stuck in the slide groove and can slide along the slide groove; the electromagnet 84 is connected to the ferromagnetic block by a spring 85;

[0033] like Figure 6As shown, the two electromagnets 84 are electrically connected to the same power supply, the same switch and the same time relay through the same controller, that is, the two electromagnets 84 are connected in parallel in a series circuit between the power supply, the switch and the time relay, the switch is set at the position where the two electromagnets 84 are connected in parallel, and the switch is a single-pole double-throw switch. The controller controls the switch according to the command to connect the power supply to the circuit where one of the two electromagnets 84 is located, and the circuit where the other electromagnet 84 is located is disconnected. The controller controls the power supply to supply power to the corresponding electromagnet 84 so that the corresponding electromagnet 84 is energized. After 1 second, the time relay controls the power supply to disconnect the electromagnet 84, and the electromagnet 84 is de-energized.

[0034] Furthermore, the two electromagnets 84 are electrically connected to the ferromagnetic block, the bottom surface of the slide slot, the spring 85 and another power source through a switch, and the ferromagnetic block, the bottom surface of the slide slot, the spring 85 and another power source are connected in series with each other, that is, the two electromagnets 84 are connected in parallel in a series circuit of the ferromagnetic block, the bottom surface of the slide slot, the spring 85 and another power source.

[0035] When a short circuit is formed between one of the electromagnets 84 and the power supply, a path is formed between the electromagnet 84 and the other power supply, and the other power supply continues to supply power to the electromagnet 84. When the ferromagnetic block contacts the conductive coating 81, the other power supply supplies power to the electromagnet 84 to energize the electromagnet 84. When the ferromagnetic block contacts the insulating coating 82, a short circuit is formed between the other power supply and the electromagnet 84.

[0036] In the initial state, the fork 1 is located at Figure 5 The front end of the middle slide is attracted by the permanent magnet Ⅰ83 at the front end of the slide. When the controller receives the command that the fork 1 needs to rotate backward (the structure and method of sending the command to the controller adopt the existing technology), the controller controls the switch action to power the electromagnet 84 at the rear end of the slide. The attraction of the electromagnet 84 at the rear end of the slide to the ferromagnetic block is greater than the attraction of the permanent magnet Ⅰ83 at the front end of the slide. The ferromagnetic block slides backward along the slide. After the electromagnet 84 is energized for 1 second, the time relay controls the power supply to form a circuit between the electromagnet and the rear end of the slide. At this time, the ferromagnetic block just slides to contact with the conductive coating 81, and another power supply is supplied to the electromagnet 84 at the rear end of the slide. 4 is powered, and the electromagnet 84 at the rear end of the slide is charged, so that the electromagnet 84 at the rear end of the slide is equivalent to being continuously charged, and at the same time, the spring 85 connected to the electromagnet 84 at the rear end of the slide is also charged and contracts, so that the electromagnet 84 at the rear end of the slide and the spring 85 drive the ferromagnetic block to slide rapidly backward along the slide to the rear end limit position. When the ferromagnetic block slides to the rear end limit position, the ferromagnetic block contacts the insulating coating 82, and a circuit is formed between another power supply and the electromagnet 84 at the rear end of the slide, and the electromagnet 84 at the rear end of the slide is powered off. At the same time, the permanent magnet I 83 at the rear end of the slide attracts the ferromagnetic block, so that the shift fork 1 is continuously located at the rear end limit position of the slide.

[0037] When the controller receives a command that the shift fork 1 needs to rotate forward, similarly, the left end of the shift fork 1 quickly slides to the limit position at the front end of the slide slot.

[0038] In this embodiment, the electromagnet 84 consumes electric energy only when the fork 1 rotates. If the fork 1 does not rotate, the electromagnet 84 does not need to be continuously energized, which can save electric energy. The ferromagnetic ball 13 can reduce friction.

[0039] Compared with the prior art, the open-loop motor 2 in the prior art cannot judge whether the rotation is in place by itself, and needs to rely on the code disk 4 and the photoelectric sensor 5 for judgment. In this embodiment, the fork 1 stops rotating when the ferromagnetic block slides to one end of the slide groove, and there is no need to set up an additional judgment mechanism for whether the fork 1 is rotated into place. At the same time, through the cooperation of the ferromagnetic block and the insulating coating 82, when the fork 1 rotates into place, the electromagnet 84 is powered off, and the fork 1 is limited by the permanent magnet Ⅰ83, saving electric energy.

[0040] In addition, in this embodiment, Figure 5 As shown, permanent magnet II 9 and permanent magnet III 91 are fixed on the fixed plate 8, and permanent magnet II 9 and permanent magnet III 91 are arranged opposite to each other in the horizontal direction and have opposite magnetic poles. One end of the ferromagnetic block away from the rotation center of the shift fork 1 is fixedly connected with a coil vertically downward through a connecting rod 14, and the coil extends between permanent magnet II 9 and permanent magnet III 91. During the rotation of the shift fork 1, the coil is driven to cut the magnetic flux lines between permanent magnet II 9 and permanent magnet III 91 to generate an induced current. The coil is electrically connected to a battery, and the coil, permanent magnet II 9 and permanent magnet III 91 are equivalent to a generator 2. The electricity generated by the generator 2 is stored in the battery, which can replace part of the power consumption of the electromagnet 84.

[0041] The length of the connecting rod 14 can be selected to be as large as possible within the allowable range, because the rotating area of ​​the fork 1 is a sector with the axis of the rotating rod 12 as the center, so it can be approximately regarded as an angle. When the degree of the angle is fixed, the longer the two sides of the angle, the longer the corresponding arc length. In other words, the longer the connecting rod 14, the longer the distance the coil cuts the magnetic flux lines in a fixed time. In other words, the faster the coil cuts the magnetic flux lines, the larger the current generated, and the more electricity generated.

[0042] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A reliable fork sorting mechanism, characterized by: The invention comprises a shift fork (1) and a driving mechanism, wherein the shift fork (1) is driven by the driving mechanism to reciprocate, and the driving mechanism comprises an electromagnet (84), wherein the electromagnet (84) is arranged at one end of the free end of the shift fork (1) at the extreme position of movement; a ferromagnetic block is fixed to the free end of the shift fork (1); the electromagnet (84) drives the shift fork (1) to reciprocate; and further comprises another electromagnet (84), wherein the two electromagnets (84) are respectively arranged at the two ends of the extreme position of movement of the free end of the shift fork (1); a spring (84) is provided between the electromagnet (84) and the ferromagnetic block. 5) connection; an arc-shaped fixed plate (8) is provided on the sorting branch, and an arc-shaped slide groove is opened on the fixed plate (8), and the ferromagnetic block is inserted into the slide groove and can slide along the slide groove; a conductive coating (81) is provided in the middle part of the bottom surface of the slide groove, and insulating coatings (82) are provided at both ends of the bottom surface of the slide groove; when the ferromagnetic block contacts the conductive coating (81), the electromagnet (84) is energized, and when the ferromagnetic block contacts the insulating coating (82), the electromagnet (84) is de-energized; a permanent magnet I (83) is fixed at each end of the arc-shaped slide groove.

2. A reliable fork sorting mechanism according to claim 1, characterized in that: The ferromagnetic block is spherical.

3. A reliable fork sorting mechanism according to claim 1, characterized in that: The electromagnet (84) is electrically connected to a power source, a switch and a time relay through a controller and they are connected in series with each other. The controller controls the power source to supply power to the electromagnet (84) so ​​that the electromagnet (84) is energized for a period of time, and then the time relay controls the power source to open the circuit with the electromagnet (84). The electromagnet (84), the ferromagnetic block, the bottom surface of the slide groove and the spring (85) are electrically connected to another power source and are connected in series with each other. When the ferromagnetic block contacts the conductive coating (81), the other power source supplies power to the electromagnet (84) so ​​that the electromagnet (84) is energized. When the ferromagnetic block contacts the insulating coating (82), an open circuit is formed between the other power source and the electromagnet (84).

4. A reliable fork sorting mechanism according to claim 3, characterized in that: A permanent magnet II (9) and a permanent magnet III (91) are fixed on the fixed plate (8); the permanent magnet II (9) and the permanent magnet III (91) are arranged opposite to each other and have opposite magnetic poles; an end of the ferromagnetic block away from the rotation center of the shift fork (1) is fixedly connected to a coil via a connecting rod (14); during the rotation of the shift fork (1), the coil is driven to cut the magnetic flux lines between the permanent magnet II (9) and the permanent magnet III (91); and the coil is electrically connected to a storage battery.

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