A device for attracting ferromagnetic soft parts

Abstract

The utility model discloses a kind of ferromagnetic softness parts's suction device, comprising: rack;Electromagnet assembly, be installed in the upper portion of rack, comprising: mounting plate;Insulated electromagnet mounting seat, at least two electromagnet installation grooves isolated from each other are set in inside, bottom is provided with the inverted U-shaped groove that can accommodate single ferromagnetic softness part;Electromagnet gland;At least two electromagnets;And measurement terminal, one end is connected with electromagnet, the other end is exposed outside electromagnet gland;Hopper, with V-shaped part placement surface;Motion mechanism, be installed in the upper portion of rack and connect electromagnet assembly, or be installed in the lower portion of rack and connect hopper;And system controller, electrically connected motion mechanism, electromagnet and measurement terminal.The suction device described in the utility model can realize for ferromagnetic softness part's individual suction and accurate positioning, especially suitable for spring heating wire of electric heating tube industry automatic feeding, facilitate the batch automatic processing of part.

Description

Technical Field

[0001] This utility model belongs to the field of parts processing and relates to a parts picking device, particularly a picking device for ferromagnetic soft parts. Background Technology

[0002] The heating element of an electric heating element is generally a spring-shaped part made of heating alloy wire. The two ends of the spring are usually connected by a "lead rod," which is a piece of wire with the end of the spring screwed into one end of the lead rod. Through the lead rod, the electric heating element can be connected to an external power source, thereby making the electric heating element heat up.

[0003] Traditional processes require manual connection of spring parts and guide rods, which is time-consuming and labor-intensive. In recent years, automated equipment has emerged to handle this process. Automated processing involves picking up spring parts one by one and positioning them at the appropriate machining station for further processing. Because springs are flexible parts, specially designed mechanical devices are needed to pick them up. Current methods typically require manual labor to neatly lay the spring parts in a single layer on the loading plate; such equipment requires dedicated personnel for loading.

[0004] Therefore, it is necessary to develop automated devices for picking up and positioning ferromagnetic soft parts such as spring heating wires. Utility Model Content

[0005] The purpose of this invention is to provide a pick-up device for ferromagnetic soft parts. This device can pick up and accurately position ferromagnetic soft parts one by one, and is especially suitable for automatic feeding of spring heating wires in the electric heating tube industry, which facilitates the batch automated processing of parts.

[0006] The present invention relates to a device for picking up ferromagnetic soft parts, comprising: a frame having a mounting assembly and a frame for moving the mounted assembly; an electromagnet assembly mounted on the upper part of the frame, comprising: a mounting plate vertically mounted on the frame; an insulated electromagnet mounting base mounted on the lower part of the mounting plate; the electromagnet mounting base having at least two mutually isolated electromagnet mounting slots inside; the bottom of the electromagnet mounting base having an inverted U-shaped groove capable of accommodating a single ferromagnetic soft part; the bottom of the electromagnet mounting slot contacting the top of the inverted U-shaped groove, the inverted U-shaped groove extending through the entire bottom of the electromagnet mounting base; an electromagnet cover sealing the electromagnet mounting slot; an electromagnet mounted in the electromagnet mounting slot; and a measuring terminal, one end connected to the electromagnet and the other end protruding outside the electromagnet cover; and a hopper mounted on the lower part of the frame, below the electromagnet assembly. The hopper has a V-shaped part placement surface; a motion mechanism is mounted on the upper part of the frame and connected to the electromagnet assembly, or mounted on the lower part of the frame and connected to the hopper; and a system controller is electrically connected to the motion mechanism to control the movement of the motion mechanism so that the electromagnet assembly or the hopper moves vertically up and down or diagonally with a vertical component; electrically connected to the coil of the electromagnet, outputting electromagnet control signals in groups to realize that each electromagnet is energized simultaneously or at different times; and electrically connected to the measuring terminals to detect whether there is a circuit connection between the terminals.

[0007] According to a further feature of the suction device of the present invention, the motion mechanism is selected from one of the following mechanisms driven by an electric motor: a lead screw and lead screw nut, a gear and rack, a pulley and belt, a sprocket and chain.

[0008] According to a further feature of the suction device described in this utility model, the electromagnet is a circular electromagnet or a long electromagnet.

[0009] According to a further feature of the suction device described in this utility model, each of the electromagnet mounting slots can be used to fix a single electromagnet or a group of multiple electrically connected electromagnets in parallel.

[0010] The ferromagnetic soft parts picking device described in this utility model has the following beneficial effects:

[0011] (1) A specially designed V-shaped hopper is used, which can stack several to hundreds of ferromagnetic soft parts (e.g., spring-shaped parts) in the hopper at one time in a basically neat manner, so that they can be automatically picked up one by one;

[0012] (2) Through the relative movement between the electromagnet assembly and the hopper, each electromagnet is energized simultaneously or at different times, so that the ferromagnetic soft parts in the hopper are attracted to the inverted U-shaped groove at the bottom of the electromagnet assembly. At this time, the parts make electrical contact with the electromagnets and connect the circuit between adjacent electromagnets. Therefore, it is possible to detect whether the parts are attracted by detecting whether there is a circuit connection between the measuring terminals.

[0013] (3) It can ensure that only one part is picked up at a time, and then the part is transferred to the receiving mechanical structure by power-off. Alternatively, the part can be transferred horizontally to other parts for subsequent processing by installing an electromagnet on a horizontal transfer mechanism. This facilitates the automated operation from part picking to positioning, improves the automation level of subsequent positioning and transfer processing, and increases labor productivity. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the ferromagnetic soft parts picking device described in this utility model.

[0015] Figure 2 This is a front view of the ferromagnetic soft parts picking device described in this utility model.

[0016] Figure 3 yes Figure 2 AA sectional view.

[0017] Figure 4 This is a three-dimensional structural diagram of the electromagnet assembly described in this utility model.

[0018] Figure 5 This is a front view of the electromagnet assembly described in this utility model.

[0019] Figure 6 yes Figure 5 CC section view.

[0020] Figure 7 yes Figure 5 DD sectional view.

[0021] Figure label:

[0022] 1: Frame; 2: Electromagnet assembly; 3: Hopper; 4: Motion mechanism; 21: Mounting plate; 22: Electromagnet mounting base; 23: Electromagnet mounting slot; 24: Inverted U-shaped groove; 25: Electromagnet cover; 26: Electromagnet; 27: Measuring terminal. Detailed Implementation

[0023] The ferromagnetic soft parts picking device described in this utility model, such as... Figures 1 to 3As shown, it includes: a frame 1 having mounting components and a frame for moving the mounted components; an electromagnet assembly 2 mounted on the upper part of the frame 1; a hopper 3 mounted on the lower part of the frame 1, below the electromagnet assembly, the hopper 3 having a V-shaped part placement surface; and a motion mechanism 4 mounted on the upper part of the frame 1 and connected to the electromagnet assembly 2, or mounted on the lower part of the frame 1 and connected to the hopper 3.

[0024] The length of hopper 3 is generally set according to the length of the parts to be picked up. The length of hopper 3 needs to be longer than the parts so that the parts can be placed neatly on one side.

[0025] like Figure 3 As shown, some parts to be collected are placed in the hopper 3 with a V-shaped structure.

[0026] like Figures 4 to 7 As shown, the electromagnet assembly 2 includes: a mounting plate 21, vertically mounted on the frame 1; an insulated electromagnet mounting base 22, mounted on the lower part of the mounting plate 21; at least two mutually isolated electromagnet mounting slots 23 are provided inside the electromagnet mounting base 22; an inverted U-shaped groove 24 is provided at the bottom of the electromagnet mounting base 22 to accommodate a single ferromagnetic soft part; the bottom of the electromagnet mounting slot 23 contacts the top of the inverted U-shaped groove 24, and the inverted U-shaped groove 24 extends through the entire bottom of the electromagnet mounting base 22; an electromagnet cover 25, sealing the electromagnet mounting slot 23; an electromagnet 26, installed in the electromagnet mounting slot 23; and a measuring terminal 27, one end of which is connected to the iron core or iron shell of the electromagnet 26, and the other end protruding outside the electromagnet cover 25.

[0027] A long, narrow electromagnet mounting base can be made of insulating material, and its length can be slightly less than, equal to, or greater than the length of the part.

[0028] An inverted U-shaped groove 24 is formed along the length direction in the middle or near the bottom of the electromagnet mounting base 22. The width of the groove is just enough to loosely fit the entire part, and the depth is slightly less than, equal to or greater than the diameter of the part.

[0029] Two or more electromagnet mounting slots can be evenly spaced inside the electromagnet mounting base, perpendicular to the inverted U-shaped groove, along its length. The distance between each mounting slot is slightly larger than the diameter (for a circular electromagnet) or length (for a long electromagnet), ensuring that the electromagnet housings do not contact each other after installation. The bottom of the mounting slot is tangent to the top of the inverted U-shaped groove, or slightly extends downwards beyond the tangent point, ensuring that the part can make electrical contact with the electromagnet when attracted.

[0030] Electromagnet 26 can be a round electromagnet or a long electromagnet.

[0031] Electromagnet 26 is usually installed in electromagnet mounting slot 23 with the magnetic lines of force pointing vertically downwards.

[0032] Each of the electromagnet mounting slots 23 can be used to fix a single electromagnet or a group of electromagnets connected in parallel. A group of electromagnets connected in parallel is considered as one electromagnet. The following text does not distinguish between a single electromagnet and a group of electromagnets connected in parallel.

[0033] The iron core or shell of an electromagnet is connected to measuring terminals for measuring the electrical contact between the electromagnet and the parts.

[0034] The motion mechanism 4 can be a conventional motor-driven motion mechanism, such as one of the following: lead screw and lead screw nut, gear and rack, pulley and belt, sprocket and chain. These motion mechanisms can drive the electromagnet assembly or hopper to move up and down.

[0035] The ferromagnetic soft parts picking device of this utility model also includes a system controller. This system controller is electrically connected to the motion mechanism 4, controlling the movement of the motion mechanism 4 so that the electromagnet assembly 2 or the hopper 3 moves vertically up and down or in a diagonal motion with a vertical component. The system controller is electrically connected to the coil of the electromagnet 26, outputting electromagnet control signals in groups to achieve simultaneous or time-sharing energization of each electromagnet 26. The system controller is electrically connected to the measuring terminals 27 to detect whether there is a circuit connection between the measuring terminals 27, and determines whether the part is attracted based on whether the circuit between the electromagnets is connected.

[0036] Example of the operation method of the ferromagnetic soft parts picking device described in this utility model:

[0037] Ensure the hopper is horizontally positioned, with the electromagnet assembly above the hopper, parallel to it, and at a certain distance, so that the electromagnet does not attract parts when it is energized.

[0038] Number the electromagnets 1, 2, and so on from left to right, and arrange the parts neatly in the hopper. Align the left edge of electromagnet 1 with the hopper. The electromagnet and the hopper can move vertically relative to each other.

[0039] (a) Method for attracting parts when there are two electromagnets

[0040] 1. First, energize both electromagnets simultaneously at full power.

[0041] 2. The motion device slowly moves the hopper and parts upwards until the parts are attracted by electromagnets. The attracted parts are simultaneously held by two electromagnets. Since the parts are conductors, the two electromagnets form an electrical path through the parts. The controller determines whether a part has been attracted by measuring whether the path is complete. At this point, more than one part may be attracted. However, due to the inverted U-shaped groove structure, only one part is in direct contact with the electromagnet; this part will be referred to as the first part.

[0042] 3. Disconnect the voltage to electromagnet #1. At this point, most of the parts that were separated from the electromagnet by the first component and were not in direct contact with it will fall off. The left side of the first component will droop away from the electromagnet due to gravity.

[0043] 4. Move the hopper downwards a certain distance, causing the parts to naturally bend and droop by 10° to 30°.

[0044] 5. Gradually increase the voltage to electromagnet #1 from zero until it just begins to attract the left side of the first dangling part. Since the first part is closest to the electromagnet, usually only the first part will be attracted at this point.

[0045] 6. Disconnect the voltage to electromagnet #2. At this point, most of the parts, except for the first piece that was originally attracted, will fall off as a whole. The left half of the first piece will continue to be attracted by electromagnet #1, while the right half will droop naturally.

[0046] 7. Gradually increase the excitation voltage of electromagnet #2 from zero until it just attracts the magnet. Since the first item is closest to the electromagnet, usually only the first item will be attracted at this point.

[0047] 8. Repeat steps 3, 5, 6, and 7 once or twice to ensure that only one part is being picked up. This achieves the picking up and positioning function of the soft spring part.

[0048] 9. The first part picked up can be placed into the receiving mechanism by de-energizing it. Alternatively, the part can be horizontally transferred to another location for further processing by mounting an electromagnet on a horizontal transfer mechanism.

[0049] (ii) Method for picking up parts when there are three electromagnets

[0050] 1. First, energize electromagnets 1 and 2 at full power.

[0051] 2. The motion device drives the hopper and parts to move slowly upwards until the left ends of one or more parts below electromagnets 1 and 2 are attracted by the electromagnets.

[0052] 3. Move the hopper downwards a certain distance so that the unlifted parts hang down naturally at 10° to 30°.

[0053] 4. Power is supplied to electromagnet #3, with the power gradually increasing from 0. Since the first item is closest to the electromagnet, it will be attracted first. Once attraction is detected, the power increase is immediately stopped. At this point, electromagnet #3 will generally only have attracted the first item, or possibly more, but the number will definitely be fewer than that attracted by electromagnets #1 and #2.

[0054] 5. Turn off the voltage of electromagnets 1 and 2. At this point, except for the first part, the rest of the parts have basically fallen off. Only the right end of the first part is still attracted by electromagnet 3.

[0055] 6. Conversely, increase the voltage to electromagnet No. 2 until the middle of the part is attracted by it.

[0056] 7. Apply voltage to electromagnet No. 1 until the left end of the part is attracted by it.

[0057] 8. Disconnect the voltage of the second and third groups of electromagnets. This will cause the right side of the part to droop downwards.

[0058] 9. Apply voltage to electromagnet No. 2 until the middle of the part is attracted.

[0059] 10. Repeat steps 4 to 7 until the entire first part is attracted by the electromagnet assembly, achieving the goal of completely attracting and positioning the soft spring part.

Claims

1. A device for picking up ferromagnetic soft parts, characterized in that, include: The rack (1) has mounting components and a frame for moving the mounted components; An electromagnet assembly (2), mounted on the upper part of the frame (1), includes: Mounting plate (21) is vertically mounted on the frame (1); An insulated electromagnet mounting base (22) is installed on the lower part of the mounting plate (21); at least two mutually isolated electromagnet mounting slots (23) are provided inside the electromagnet mounting base (22); an inverted U-shaped groove (24) that can accommodate a single ferromagnetic soft part is provided at the bottom of the electromagnet mounting base (22); the bottom of the electromagnet mounting slot (23) is in contact with the top of the inverted U-shaped groove (24), and the inverted U-shaped groove (24) runs through the entire bottom of the electromagnet mounting base (22); Electromagnet cover (25) seals the electromagnet mounting slot (23); An electromagnet (26) is installed in the electromagnet mounting slot (23); and The measuring terminal (27) is connected at one end to the iron core or iron shell of the electromagnet (26), and at the other end protrudes outside the electromagnet cover (25); The hopper (3) is installed at the lower part of the frame (1), below the electromagnet assembly; the hopper (3) has a V-shaped part placement surface; The motion mechanism (4) is mounted on the upper part of the frame (1) and connected to the electromagnet assembly (2), or mounted on the lower part of the frame (1) and connected to the hopper (3); and The system controller is electrically connected to the motion mechanism (4) and controls the motion of the motion mechanism (4) so ​​that the electromagnet assembly (2) or the hopper (3) moves vertically up and down or moves obliquely with a vertical component; it is electrically connected to the coil of the electromagnet (26) and outputs electromagnet control signals in groups to realize that each group of electromagnets (26) is energized simultaneously or at different times; it is electrically connected to the measuring terminal to detect whether there is a circuit connection between the measuring terminals (27).

2. The suction device according to claim 1, characterized in that: The motion mechanism (4) is selected from one of the following mechanisms driven by an electric motor: lead screw and lead screw nut, gear and rack, pulley and belt, sprocket and chain.

3. The suction device according to claim 1, characterized in that: The electromagnet (26) is a circular electromagnet or a long electromagnet.

4. The suction device according to claim 1, characterized in that: Each of the electromagnet mounting slots (23) can be used to fix a single electromagnet or a group of electromagnets connected in parallel.

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